CONNECTION STRUCTURE, STRAP, AND WATCH

Abstract

A connection structure includes a first foldable plate, a second foldable plate, and an elastic shaft. The first foldable plate includes a first support strip and a second support strip having a first gap therebetween, and a first clamping portion is disposed on two side faces facing each other. The second foldable plate includes a third support strip and a fourth support strip having a second gap therebetween, and a second clamping portion is disposed on two side faces facing away each other. The elastic shaft passes through the second gap, and its two ends are respectively connected to the third support strip and the fourth support strip. When the first foldable plate and the second foldable plate are in a closed state, the third support strip and the fourth support strip are located in the first gap, and the first clamping portion is clamped to the second clamping portion.

Claims

1. A connection structure, comprising: a first foldable plate, comprising a first support strip connected to a second support strip, wherein the first support strip and the second support strip are disposed in parallel, to define a first gap between the first support strip and the second support strip, the first support strip and the second support strip each comprise a side face, wherein the side face of the first support strip faces the side face of the second support strip, and a first clamping portion is disposed on one of the side face of the first support strip or the side face of the second support strip; a second foldable plate, wherein one end of the second foldable plate is rotatably connected to one end of the first foldable plate, the second foldable plate comprises a third support strip and a fourth support strip, the third support strip and the fourth support strip are disposed in parallel, to define a second gap between the third support strip and the fourth support strip, the third support strip and the fourth support strip each comprise a side face, wherein the side face of the third support strip faces away from the side face of the fourth support strip, and a second clamping portion is disposed on one of the side face of the third support strip and the side face of the fourth support strip; and an elastic shaft with two ends, wherein the elastic shaft passes through the second gap, each of the two ends of the elastic shaft are respectively connected to the third support strip and the fourth support strip, and the elastic shaft is elastic in a direction of an axis of the elastic shaft, to adjust a size of the second gap; and when the first foldable plate and the second foldable plate are in a closed state, the third support strip and the fourth support strip are located in the first gap, and the first clamping portion is clamped to the second clamping portion.

2. The connection structure according to claim 1, further comprising: a connection assembly, comprising a face cover and at least one rotating shaft that is disposed on one side of the face cover and that is fastened to the face cover, wherein the at least one rotating shaft is rotatably connected to the second foldable plate through the elastic shaft, and the face cover is configured to connect to a component outside the connection structure.

3. The connection structure according to claim 2, wherein the at least one rotating shaft comprises a first rotating shaft and a second rotating shaft that are spaced from each other; the third support strip comprises a first connection portion and a second connection portion that are sequentially arranged in the direction of the axis of the elastic shaft, the first connection portion is distal from the fourth support strip relative to the second connection portion, the fourth support strip comprises a third connection portion and a fourth connection portion that are sequentially arranged in the direction of the axis of the elastic shaft, and the third connection portion is distal from the third support strip relative to the fourth connection portion; the first rotating shaft is disposed between the first connection portion and the second connection portion, and the second rotating shaft is disposed between the third connection portion and the fourth connection portion; and one end of the elastic shaft sequentially passes through the second connection portion and the first rotating shaft to abut against the first connection portion, and the other end of the elastic shaft sequentially passes through the fourth connection portion and the second rotating shaft to abut against the third connection portion.

4. The connection structure according to claim 3, wherein a distance between the first connection portion and the second connection portion is greater than a thickness of the first rotating shaft in the direction of the axis of the elastic shaft, and a distance between the third connection portion and the fourth connection portion is greater than a thickness of the second rotating shaft in the direction of the axis of the elastic shaft.

5. The connection structure according to claim 1, wherein the first clamping portion defines a clamping groove, and the second clamping portion defines a bump; and when the first foldable plate and the second foldable plate are in the closed state, the bump is located in the clamping groove.

6. The connection structure according to claim 1, wherein the first clamping portion is disposed distal from the end that is of the first foldable plate and that is rotatably connected to the second foldable plate, and the second clamping portion is disposed distal from the end that is of the second foldable plate and that is rotatably connected to the first foldable plate.

7. The connection structure according to claim 1, further comprising: a hinge shaft, wherein the first support strip, the second support strip, the third support strip, and the fourth support strip are rotatably connected through the hinge shaft, and the third support strip and the fourth support strip are located between the first support strip and the second support strip.

8. The connection structure according to claim 7, wherein a part of the third support strip that is proximate to the hinge shaft is connected to a part of the fourth support strip that is proximate to the hinge shaft, and the second gap is distal from the hinge shaft.

9. The connection structure according to claim 8, wherein a width of a part of the second gap that is distal from the hinge shaft is greater than a width of a part of the second gap that is proximate to the hinge shaft, the width of the part of the second gap that is distal from the hinge shaft and the width of the part of the second gap that is proximate to the hinge shaft are measured in the direction of the axis of the elastic shaft.

10. The connection structure according to claim 1, wherein the first foldable plate further comprises a connection strip disposed between the first support strip and the second support strip, and two ends of the connection strip are respectively connected to the first support strip and the second support strip; and a groove is further defined on each of the third support strip and the fourth support strip; and when the first foldable plate and the second foldable plate are in the closed state, the connection strip is located in the groove; or wherein the first foldable plate further comprises a connection plate disposed between the first support strip and the second support strip, the connection plate comprising two side edges, each of the two side edges of the connection plate are respectively connected to the first support strip and the second support strip; and the connection plate, the side face of the first support strip that is proximate to the connection plate, and the side face of the second support strip that is proximate to the connection plate define a receiving groove; and when the first foldable plate and the second foldable plate are in the closed state, the third support strip and the fourth support strip are at least partially located in the receiving groove.

11. The connection structure according to claim 1, wherein the third support strip further comprises a first protrusion portion disposed on a side of the third support strip that is distal from the fourth support strip, and the fourth support strip further comprises a second protrusion portion disposed on a side of the fourth support strip that is distal from the third support strip; and the first protrusion portion and the second protrusion portion are located on or parallel to the axis of the elastic shaft; and when the first foldable plate and the second foldable plate are in the closed state, the first protrusion portion and the second protrusion portion respectively protrude from two side faces of the first support strip and the second support strip that are distal from each other.

12. The connection structure according to claim 1, wherein the first foldable plate and the second foldable plate are arc-shaped; and when the first foldable plate and the second foldable plate are in the closed state, the first foldable plate and the second foldable plate have a same bending direction and a same bending radian.

13. A strap, comprising: a connection structure, wherein the connection structure comprises: a first foldable plate, comprising a first support strip connected to a second support strip, wherein the first support strip and the second support strip are disposed in parallel, to define a first gap between the first support strip and the second support strip, the first support strip and the second support strip each comprise a side face, wherein the side face of the first support strip faces the side face of the second support strip, and a first clamping portion is disposed on one of the side face of the first support strip or the side face of the second support strip; a second foldable plate, wherein one end of the second foldable plate is rotatably connected to one end of the first foldable plate, the second foldable plate comprises a third support strip and a fourth support strip, the third support strip and the fourth support strip are disposed in parallel, to define a second gap between the third support strip and the fourth support strip, the third support strip and the fourth support strip each comprise a side face, wherein the side face of the third support strip faces away from the side face of the fourth support strip, and a second clamping portion is disposed on one of the side face of the third support strip and the side face of the fourth support strip; and an elastic shaft with two ends, wherein the elastic shaft passes through the second gap, each of the two ends of the elastic shaft are respectively connected to the third support strip and the fourth support strip, and the elastic shaft is elastic in a direction of an axis of the elastic shaft, to adjust a size of the second gap; and when the first foldable plate and the second foldable plate are in a closed state, the third support strip and the fourth support strip are located in the first gap, and the first clamping portion is clamped to the second clamping portion; a first strap, wherein one end of a first foldable plate in the connection structure is rotatably connected to a second foldable plate, and the other end is connected to the first strap; and a second strap, wherein one end of the second foldable plate in the connection structure is rotatably connected to the first foldable plate, and the other end is connected to the second strap.

14. The strap according to claim 13, wherein when the connection structure further comprises a connection assembly, the second strap is connected to the second foldable plate through the connection assembly; a face cover of the connection assembly comprises a base plate and a cover plate, the base plate and the cover plate enclose an accommodation space, and a clamping pillar is disposed on the cover plate; and a through hole is provided on the second strap, and the second strap extends into the accommodation space and is clamped to the clamping pillar through the through hole.

15. The strap according to claim 13, wherein the at least one rotating shaft comprises a first rotating shaft and a second rotating shaft that are spaced from each other; the third support strip comprises a first connection portion and a second connection portion that are sequentially arranged in the direction of the axis of the elastic shaft, the first connection portion is distal from the fourth support strip relative to the second connection portion, the fourth support strip comprises a third connection portion and a fourth connection portion that are sequentially arranged in the direction of the axis of the elastic shaft, and the third connection portion is distal from the third support strip relative to the fourth connection portion; the first rotating shaft is disposed between the first connection portion and the second connection portion, and the second rotating shaft is disposed between the third connection portion and the fourth connection portion; and one end of the elastic shaft sequentially passes through the second connection portion and the first rotating shaft to abut against the first connection portion, and the other end of the elastic shaft sequentially passes through the fourth connection portion and the second rotating shaft to abut against the third connection portion.

16. The strap according to claim 13, wherein the first foldable plate further comprises a connection strip disposed between the first support strip and the second support strip, and two ends of the connection strip are respectively connected to the first support strip and the second support strip; and a groove is further defined on each of the third support strip and the fourth support strip; and when the first foldable plate and the second foldable plate are in the closed state, the connection strip is located in the groove; or wherein the first foldable plate further comprises a connection plate disposed between the first support strip and the second support strip, the connection plate comprising two side edges, each of the two side edges of the connection plate are respectively connected to the first support strip and the second support strip; and the connection plate, the side face of the first support strip that is proximate to the connection plate, and the side face of the second support strip that is proximate to the connection plate define a receiving groove; and when the first foldable plate and the second foldable plate are in the closed state, the third support strip and the fourth support strip are at least partially located in the receiving groove.

17. A watch, comprising: a watch face; and a strap comprising a connection structure, wherein the connection structure comprises: a first foldable plate, comprising a first support strip connected to a second support strip, wherein the first support strip and the second support strip are disposed in parallel, to define a first gap between the first support strip and the second support strip, the first support strip and the second support strip each comprise a side face, wherein the side face of the first support strip faces the side face of the second support strip, and a first clamping portion is disposed on one of side face of the first support strip or the side face of the second support strip; a second foldable plate, wherein one end of the second foldable plate is rotatably connected to one end of the first foldable plate, the second foldable plate comprises a third support strip and a fourth support strip, the third support strip and the fourth support strip are disposed in parallel, to define a second gap between the third support strip and the fourth support strip, the third support strip and the fourth support strip each comprise a side face, wherein the side face of the third support strip faces away from the side face of the fourth support strip, and a second clamping portion is disposed on one of the side face of the third support strip and the side face the fourth support strip; and an elastic shaft with two ends, wherein the elastic shaft passes through the second gap, each of the two ends of the elastic shaft are respectively connected to the third support strip and the fourth support strip, and the elastic shaft is elastic in a direction of an axis of the elastic shaft, to adjust a size of the second gap; and when the first foldable plate and the second foldable plate are in a closed state, the third support strip and the fourth support strip are located in the first gap, and the first clamping portion is clamped to the second clamping portion; a first strap, wherein one end of a first foldable plate in the connection structure is rotatably connected to a second foldable plate, and the other end is connected to the first strap; and a second strap, wherein one end of the second foldable plate in the connection structure is rotatably connected to the first foldable plate, and the other end is connected to the second strap, wherein one end of the watch face is connected to a first strap of the strap, and the other end of the watch face is connected to a second strap of the strap.

18. The watch according to claim 17, wherein when the connection structure further comprises a connection assembly, the second strap is connected to the second foldable plate through the connection assembly; a face cover of the connection assembly comprises a base plate and a cover plate, the base plate and the cover plate enclose an accommodation space, and a clamping pillar is disposed on the cover plate; and a through hole is provided on the second strap, and the second strap extends into the accommodation space and is clamped to the clamping pillar through the through hole.

19. The watch according to claim 17, wherein the at least one rotating shaft comprises a first rotating shaft and a second rotating shaft that are spaced from each other; the third support strip comprises a first connection portion and a second connection portion that are sequentially arranged in the direction of the axis of the elastic shaft, the first connection portion is distal from the fourth support strip relative to the second connection portion, the fourth support strip comprises a third connection portion and a fourth connection portion that are sequentially arranged in the direction of the axis of the elastic shaft, and the third connection portion is distal from the third support strip relative to the fourth connection portion; the first rotating shaft is disposed between the first connection portion and the second connection portion, and the second rotating shaft is disposed between the third connection portion and the fourth connection portion; and one end of the elastic shaft sequentially passes through the second connection portion and the first rotating shaft to abut against the first connection portion, and the other end of the elastic shaft sequentially passes through the fourth connection portion and the second rotating shaft to abut against the third connection portion.

20. The watch according to claim 17, wherein the first foldable plate further comprises a connection strip disposed between the first support strip and the second support strip, and two ends of the connection strip are respectively connected to the first support strip and the second support strip; and a groove is further defined on each of the third support strip and the fourth support strip; and when the first foldable plate and the second foldable plate are in the closed state, the connection strip is located in the groove; or wherein the first foldable plate further comprises a connection plate disposed between the first support strip and the second support strip, the connection plate comprising two side edges, and each of the two side edges of the connection plate are respectively connected to the first support strip and the second support strip; and the connection plate, the side face of the first support strip that is proximate to the connection plate, and the side face of the second support strip that is proximate to the connection plate define a receiving groove; and when the first foldable plate and the second foldable plate are in the closed state, the third support strip and the fourth support strip are at least partially located in the receiving groove.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG. 1 is a diagram of a structure of a watch according to an embodiment of this application;

[0036] FIG. 2 is a diagram of a structure of a strap according to an embodiment of this application;

[0037] FIG. 3 is a diagram of another structure of a strap according to an embodiment of this application;

[0038] FIG. 4 is a partially enlarged diagram of a strap according to an embodiment of this application;

[0039] FIG. 5 is another partially enlarged diagram of a strap according to an embodiment of this application;

[0040] FIG. 6 is a diagram of a structure of a connection structure according to an embodiment of this application;

[0041] FIG. 7 is an exploded diagram of a structure of a connection structure according to an embodiment of this application;

[0042] FIG. 8 is a diagram of another structure of a connection structure according to an embodiment of this application;

[0043] FIG. 9 is a sectional view of a connection structure according to an embodiment of this application;

[0044] FIG. 10 is another sectional view of a connection structure according to an embodiment of this application;

[0045] FIG. 11 is another sectional view of a connection structure according to an embodiment of this application; and

[0046] FIG. 12 is a diagram of a structure of a first foldable plate according to an embodiment of this application.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

[0047] The following clearly and describes technical solutions in some embodiments of this application with reference to accompanying drawings. It is clear that the described embodiments are merely some rather than all of embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on embodiments of this application shall fall within the protection scope of this application.

[0048] In descriptions of this application, it should be understood that orientation or position relationships indicated by terms such as center, above, below, front, back, left, right, vertical, horizontal, top, bottom, inside, and outside are orientation or position relationships based on the accompanying drawings, and are merely intended to describe this application and simplify the descriptions, but are not intended to indicate or imply that a described apparatus or element needs to have a specific orientation and be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0049] Unless otherwise required by the context, throughout the specification and claims, the term include is interpreted as open and inclusive, that is, include but not limited to. In the descriptions of the specification, terms such as an embodiment, some embodiments, example embodiments, for example, or some examples are intended to indicate that a specific feature, structure, material, or characteristic related to the embodiment or example is included in at least one embodiment or example of this application. The schematic representations of the foregoing terms do not necessarily refer to a same embodiment or example. In addition, the specific feature, structure, material, or characteristic may be included in any one or more embodiments or examples in any appropriate manner.

[0050] The following terms first and second are merely intended for a purpose of description, and shall not be understood as indicating or implying relative importance or implicitly indicating a quantity of indicated technical features. Therefore, a feature limited by first or second may explicitly or implicitly include one or more features. In the descriptions of embodiments of this application, unless otherwise specified, a plurality of means two or more than two.

[0051] In the description of some embodiments, expressions of connected and extensions thereof may be used. For example, when some embodiments are described, the term connected may be used to indicate that two or more components are in direct or indirect physical contact with each other.

[0052] FIG. 1 is a diagram of a structure of a watch 100 according to an embodiment of this application. As shown in FIG. 1, this embodiment of this application provides the watch 100. The watch 100 may be a quartz watch, a mechanical watch, an electronic watch, a smartwatch, or the like. The watch 100 may be worn on a wrist, and may implement functions such as time display, timing, time reporting, message notification, motion detection, heart rate monitoring, and blood oxygen level detection.

[0053] As shown in FIG. 1, the watch 100 may include a watch face 101 and a strap 102.

[0054] The strap 102 is configured to wrap around a wrist of a user, so that the watch 100 can be worn.

[0055] Refer to FIG. 1. One end of the watch face 101 is connected to a first strap 10 of the strap 102, and the other end of the watch face 101 is connected to a second strap 20 of the strap 102.

[0056] For example, the watch face 101 may be a watch face on which a movement has been assembled. Alternatively, a movement is not assembled on the watch face 101, and the watch face 101 includes only a case for movement installation.

[0057] For example, the case of the watch face 101 is connected to the first strap 10 and the second strap 20 of the strap 102.

[0058] For example, a material of the case of the watch face 101 may be plastic or stainless steel.

[0059] For example, a decorative coating may be formed on a surface of the case by using a physical vapor deposition (PVD for short) process, to improve abrasion resistance of the case and improve decorative effect of the case.

[0060] For example, the movement in the watch face 101 may be a manual mechanical movement, an automatic mechanical movement, a quartz movement, a smart movement, or the like. This is not limited in this application.

[0061] The mechanical movement may include a dial, a hand system, an escapement system, and a hairspring. The hairspring stores energy through elastic deformation of the hairspring. The hairspring is connected to the escapement system. The escapement system is connected to the hand system in a transmission manner through gears. The escapement system receives a driving force from the hairspring, and further drives a second hand, a minute hand, and an hour hand of the hand system to rotate. The second hand, the minute hand, and the hour hand are all disposed on the dial.

[0062] The quartz movement may include a dial, a hand system, a battery, a quartz crystal oscillator, a motor, and a control circuit. The battery, the quartz crystal oscillator, and the motor are all electrically connected to the control circuit. The control circuit receives an oscillation signal sent by the quartz crystal oscillator, and forms, based on the oscillation signal, a drive signal for driving the motor to rotate. The motor drives, through gears, a second hand, a minute hand, and an hour hand of the hand system to rotate, and the second hand, the minute hand, and the hour hand are all disposed on the dial for rotating.

[0063] The smart movement may include a main board, a battery, and a display panel. The main board is electrically connected to both the battery and the display panel. The main board is configured to control the display panel to display information such as time and a heart rate of a user.

[0064] FIG. 2 is a diagram of a structure of a strap 102 in a closed state according to an embodiment of this application. FIG. 3 is a diagram of a structure of a strap 102 in an open state according to an embodiment of this application. As shown in FIG. 2 and FIG. 3, the strap 102 includes a first strap 10, a second strap 20, and a connection structure 30.

[0065] The strap 102 is configured to wear a watch 100 on a wrist of a user. In addition, a length of the strap 102 may be adjusted by opening and closing the connection structure 30, so that the watch 100 is smoothly worn on the wrist or taken off from the wrist.

[0066] For example, the first strap 10 and the second strap 20 may be made of a flexible material or a rigid material. For example, materials of the first strap 10 and the second strap 20 may be stainless steel, plastic, or the like. For example, the first strap 10 and the second strap 20 may be rubber straps, or the first strap 10 and the second strap 20 may be metal straps formed by sequentially connecting metal chains, or the first strap 10 and the second strap 20 may be cloth straps woven from cotton thread or nylon thread. The materials of the first strap 10 and the second strap 20 are not limited in this embodiment.

[0067] For example, the connection structure 30 may be made of a metal material. For example, the connection structure 30 may be made of a stainless steel material. In this application, the material of the connection structure 30 is described merely by using an example, which does not constitute a limitation on the material of the connection structure 30. For example, the connection structure 30 may alternatively be made of a plastic material with specific hardness or the like.

[0068] Refer to FIG. 2 and FIG. 3. The connection structure 30 includes a first foldable plate 1 and a second foldable plate 2.

[0069] FIG. 4 is a partially enlarged diagram of an area of a dashed box A in FIG. 2, and is also a bottom view of the connection structure 30 in a closed state. Refer to FIG. 3 and FIG. 4. One end of the first foldable plate 1 in the connection structure 30 is rotatably connected to the second foldable plate 2, and the other end is connected to the first strap 10.

[0070] FIG. 5 is a partially enlarged diagram of an area of a dashed box B in FIG. 3, and is also a bottom view of the connection structure 30 in a closed state. Refer to FIG. 3 and FIG. 5. One end of the second foldable plate 2 in the connection structure 30 is rotatably connected to the first foldable plate 1, and the other end is connected to the second strap 20.

[0071] The first foldable plate 1 and the second foldable plate 2 in the connection structure 30 are rotatably connected, so that the first foldable plate 1 and the second foldable plate 2 can be opened (with reference to FIG. 3) and closed (with reference to FIG. 2). One end that is of the first foldable plate 1 and that is away from the second foldable plate 2 is connected to the first strap 10, and one end that is of the second foldable plate 2 and that is away from the first foldable plate 1 is connected to the second strap 20. Refer to FIG. 3. When the first foldable plate 1 and the second foldable plate 2 are opened, one end that is of the first strap 10 and that is connected to the first foldable plate 1 and one end that is of the second strap 20 and that is connected to the second foldable plate 2 may be driven to be away from each other, thereby lengthening the length of the strap 102. This helps wear the watch 100 on and take off the watch 100 from the wrist. Refer to FIG. 2. When the first foldable plate 1 and the second foldable plate 2 are closed, the end that is of the first strap 10 and that is connected to the first foldable plate 1 and the end that is of the second strap 20 and that is connected to the second foldable plate 2 may be driven to be close to each other, thereby shortening the length of the strap 102. Therefore, the watch 100 is fastened to and worn on the wrist.

[0072] In some embodiments, with reference to FIG. 3 and FIG. 4, the first strap 10 may be connected to the first foldable plate 1 through a hinge. For example, one end of the first foldable plate 1 is rotatably connected to the second foldable plate 2, the other end of the first foldable plate 1 is in a U-shaped design, one end of the first strap 10 is located in the U-shaped structure, and a U-shaped end portion of the first foldable plate 1 is connected to an end portion of the first strap 10 through a connection shaft, so that the first strap 10 is connected to the first foldable plate 1. In addition, the first strap 10 and the first foldable plate 1 may rotate around the connection shaft, so that adaptability of the strap 102 to the wrist after the watch 100 is worn on the wrist can be improved, and comfort can be improved.

[0073] In some embodiments, the second strap 20 may be connected to the second foldable plate 2 through a hinge. For example, one end of the second foldable plate 2 is rotatably connected to the first foldable plate 1, the other end of the second foldable plate 2 is in a U-shaped design, one end of the second strap 20 is located in the U-shaped structure, and a U-shaped end portion of the second foldable plate 2 is connected to an end portion of the second strap 20 through a connection shaft, so that the second strap 20 is connected to the second foldable plate 2. In addition, the second strap 20 and the second foldable plate 2 may rotate around the connection shaft, so that the adaptability of the strap 102 to the wrist after the watch 100 is worn on the wrist can be improved, and comfort can be improved.

[0074] In some embodiments, as shown in FIG. 3 and FIG. 5, the second strap 20 may alternatively be connected to the second foldable plate 2 through a connection assembly 4.

[0075] As shown in FIG. 3 and FIG. 5, when the connection structure 30 further includes the connection assembly 4, the second strap 20 is connected to the second foldable plate 2 through the connection assembly 4.

[0076] Refer to FIG. 7. The connection assembly 4 includes a face cover 41 and at least one rotating shaft 42. The rotating shaft 42 is connected to the second foldable plate 2.

[0077] Refer to FIG. 7. The face cover 41 of the connection assembly 4 includes a base plate 411 and a cover plate 412. The base plate 411 and the cover plate 412 enclose accommodation space K1. The accommodation space K1 is configured to allow the second strap 20 to pass through.

[0078] For example, the base plate 411 is connected to the rotating shaft 42.

[0079] For example, the base plate 411 and the cover plate 412 are integrally formed.

[0080] Refer to FIG. 7. A clamping pillar L is disposed on the cover plate 412. Specifically, the clamping pillar L is disposed on a surface of a side that is of the cover plate 412 and that faces the base plate 411, so that the clamping pillar L is connected to the second strap 20 that passes through the accommodation space K1.

[0081] For example, the clamping pillar L may alternatively be disposed on the base plate 411. Specifically, the clamping pillar L is disposed on a surface of a side that is of the base plate 411 and that faces the cover plate 412, so that, similarly, the clamping pillar L is connected to the second strap 20 that passes through the accommodation space K1.

[0082] Refer to FIG. 2, FIG. 3, and FIG. 5. A through hole K2 is provided on the second strap 20. The second strap 20 extends into the accommodation space K1, and is clamped to the clamping pillar L through the through hole K2, so that the second strap 20 is connected to the second foldable plate 2.

[0083] For example, the through hole K2 may be in a shape of an ellipse, a circle, a rectangle, a polygon, or the like.

[0084] For example, with reference to FIG. 2 and FIG. 3, a plurality of through holes K2 may be provided on the second strap 20. The plurality of through holes K2 are sequentially arranged in a length direction of the second strap 20. The length of the strap 102 can also be adjusted by controlling the clamping pillar L to clamp into different through holes K2. In this way, the strap 102 can adapt to users with different wrist sizes, to avoid a manner of cutting the length of the strap 102 to adapt to the users with different wrist sizes.

[0085] In some embodiments, a diameter of the clamping pillar L gradually increases in a protrusion direction of the clamping pillar L, to ensure that a firmness degree of clamping between the clamping pillar L and the second strap 20 is high, and reduce fall-off risks of the clamping pillar L and the second strap 20.

[0086] In some embodiments, the clamping pillar L may include a first sub-pillar and a second sub-pillar that are sequentially arranged in the protrusion direction of the clamping pillar L. Axes of the first sub-pillar and the second sub-pillar are on a same straight line, and a diameter of the second sub-pillar is greater than that of the first sub-pillar. In other words, a diameter of the top of the clamping pillar L is set to be greater than a diameter of the bottom, so that clamping effect of the clamping pillar L and the second strap 20 can be improved, and the fall-off risks of the clamping pillar L and the second strap 20 can be reduced.

[0087] In some embodiments, as shown in FIG. 7, the connection assembly 4 further includes an opening K3 provided on the cover plate 412. The opening K3 communicates with the accommodation space K1, so that a clamping status of the clamping pillar L and the through hole K2 of the second strap 20 can be observed.

[0088] It should be noted that the second strap 20 may alternatively be clamped to the connection assembly 4 through another clamping structure. For example, a plurality of wedge-shaped grooves are provided on the second strap 20, and a rectangular clamping strip is disposed on the cover plate 412 of the connection assembly 4. The second strap 20 passes through the accommodation space K1 to be clamped to the rectangular clamping strip through the wedge-shaped groove, so that the second strap 20 is connected to the second foldable plate 2. In the foregoing embodiment of this application, a connection manner between the second strap 20 and the connection assembly 4 is described merely by using an example, which does not constitute a limitation on the connection manner.

[0089] In a related technology, a structure design of a connection structure (namely, a buckle-type strap) whose strap length can be adjusted and that does not need to be disassembled is complex, and fitting of a plurality of parts is required to implement adjustment of the strap. In this case, a size of the part of the strap is small, and a plurality of small-sized parts lead to high assembly difficulty of the connection structure in an assembly process and poor reliability of the connection structure after assembly. In addition, costs of the precise small-sized part are high. This is not conducive to cost reduction of the buckle-type strap.

[0090] To resolve the foregoing technical problems, this application provides a connection structure 30.

[0091] FIG. 6 is a diagram of a structure of a connection structure 30 in an open state according to an embodiment of this application. FIG. 7 is an exploded diagram of a structure of a connection structure 30 according to an embodiment of this application. FIG. 8 is a diagram of a structure of a connection structure 30 in a closed state according to an embodiment of this application.

[0092] As shown in FIG. 6, the connection structure 30 includes a first foldable plate 1, a second foldable plate 2, and an elastic shaft 3.

[0093] Refer to FIG. 6. One end of the first foldable plate 1 is rotatably connected to one end of the second foldable plate 2. For example, the first foldable plate 1 is connected to the second foldable plate 2 through a hinge. Alternatively, for example, the first foldable plate 1 is connected to the second foldable plate 2 through a hinge.

[0094] Refer to FIG. 2. After the first foldable plate 1 and the second foldable plate 2 are rotated and closed, the first strap 10 and the second strap 20 may be driven to be close to each other, thereby shortening a length of a strap 102. Refer to FIG. 3. After the first foldable plate 1 and the second foldable plate 2 are rotated and opened, the first strap 10 and the second strap 20 may be driven to be away from each other, thereby lengthening the length of the strap 102.

[0095] For example, after a user wears a watch 100, the first foldable plate 1 is in contact with a wrist of the user. After the first foldable plate 1 and the second foldable plate 2 are rotated and closed, the second foldable plate 2 is away from the wrist of the user relative to the first foldable plate 1.

[0096] Alternatively, for example, with reference to FIG. 8, after the user wears the watch 100, the first foldable plate 1 and the second foldable plate 2 are closed, and the first foldable plate 1 and the second foldable plate 2 are on a same curved surface. In other words, the first foldable plate 1 and the second foldable plate 2 are both in contact with the wrist.

[0097] Refer to FIG. 6. The first foldable plate 1 includes a first support strip 11 and a second support strip 12 that are connected to each other. The first support strip 11 and the second support strip 12 are disposed in parallel, and a first gap U1 exists between the first support strip 11 and the second support strip 12.

[0098] For example, the first support strip 11 of the first foldable plate 1 is fastened to the second support strip 12 of the first foldable plate 1. In other words, a width of the first gap U1 between the first support strip 11 and the second support strip 12 is fixed.

[0099] The first gap U1 is configured to provide placement space for the second foldable plate 2. For example, with reference to FIG. 8, after the first foldable plate 1 and the second foldable plate 2 are closed, the second foldable plate 2 is located in the first gap U1, so that the first foldable plate 1 and the second foldable plate 2 can share same design space in a thickness direction. Therefore, a light and thin design of the strap 102 is implemented, and wearing comfort of the watch 100 is improved.

[0100] Refer to FIG. 6. A first clamping portion M1 is disposed on at least one of two side faces that are of the first support strip 11 and the second support strip 12 and that face each other.

[0101] It should be noted that the foregoing two side faces that face each other are a side face that is of the first support strip 11 and that is close to the second support strip 12 and faces the second support strip 12 and a side face that is of the second support strip 12 and that is close to the first support strip 11 and faces the first support strip 11.

[0102] FIG. 9 is a sectional view along a dashed line C-C in FIG. 4, and is a bottom view of the connection structure 30 in the closed state. For example, with reference to FIG. 9, the first clamping portion M1 is disposed on each of the two side faces that are of the first support strip 11 and the second support strip 12 and that face each other.

[0103] Alternatively, for example, the first clamping portion M1 is disposed only on the side face that is of the first support strip 11 and that is close to the second support strip 12 and faces the second support strip 12.

[0104] Alternatively, for example, the first clamping portion M1 is disposed only on the side face that is of the second support strip 12 and that is close to the first support strip 11 and faces the first support strip 11.

[0105] For example, a plurality of first clamping portions M1 may be disposed on each side face. Therefore, a clamping firmness degree can be enhanced.

[0106] Refer to FIG. 6. The second foldable plate 2 includes a third support strip 21 and a fourth support strip 22. The third support strip 21 and the fourth support strip 22 are disposed in parallel, and a second gap U2 exists between the third support strip 21 and the fourth support strip 22.

[0107] The second gap U2 is configured to provide motion space for the third support strip 21 and the fourth support strip 22 to move toward each other (be close to each other).

[0108] External forces are applied to a side that is of the third support strip 21 and that is away from the fourth support strip 22 and a side that is of the fourth support strip 22 and that is away from the third support strip 21, so that the third support strip 21 and the fourth support strip 22 are close to each other. Therefore, the second foldable plate 2 is smoothly placed in the first gap U1, and the second foldable plate 2 and the first foldable plate 1 are closed.

[0109] For example, with reference to FIG. 6, the second gap U2 is provided away from an end portion that is of the second foldable plate 2 and that is rotatably connected to the first foldable plate 1.

[0110] For example, with reference to FIG. 7, the second gap U2 is at least partially located between two end portions that are of the third support strip 21 and the fourth support strip 22 and that face each other, so that the end portions of the third support strip 21 and the fourth support strip 22 are close to each other under an action of the external forces.

[0111] Refer to FIG. 7. A second clamping portion M2 is disposed on at least one of two side faces that are of the third support strip 21 and the fourth support strip 22 and that face away from each other.

[0112] It should be noted that the foregoing two side faces that face away from each other are a side face that is of the third support strip 21 and that faces away from the fourth support strip 22 and a side face that is of the fourth support strip 22 and that faces away from the third support strip 21.

[0113] For example, the second clamping portion M2 is disposed only on the side face that is of the third support strip 21 and that faces away from the fourth support strip 22.

[0114] Alternatively, for example, the second clamping portion M2 is disposed only on the side face that is of the fourth support strip 22 and that faces away from the third support strip 21.

[0115] Alternatively, for example, with reference to FIG. 9, the second clamping portion M2 is disposed on each of two side faces that are of the third support strip 21 and the fourth support strip 22 and that face each other.

[0116] For example, a plurality of second clamping portions M2 may be disposed on each side face. Therefore, the clamping firmness degree can be enhanced.

[0117] FIG. 10 is a sectional view along a dashed line D-D in FIG. 8. Refer to FIG. 10. The elastic shaft 3 passes through the second gap U2, and two ends of the elastic shaft 3 are respectively connected to the third support strip 21 and the fourth support strip 22.

[0118] For example, with reference to FIG. 10, the two ends of the elastic shaft 3 may respectively abut against the third support strip 21 and the fourth support strip 22.

[0119] The two ends of the elastic shaft 3 are disposed to be respectively connected to the third support strip 21 and the fourth support strip 22, so that the third support strip 21 and the fourth support strip 22 have a tendency to be away from each other under an elastic force of the elastic shaft 3. Therefore, when the first foldable plate 1 and the second foldable plate 2 are closed and the second foldable plate 2 is located in the first gap U1, the second clamping portion M2 on the third support strip 21 and the fourth support strip 22 is securely clamped to the first clamping portion M1 on the first foldable plate 1 through the elastic force of the elastic shaft 3.

[0120] For example, with reference to FIG. 10, the elastic shaft 3 may be a spring bar.

[0121] For example, the elastic shaft 3 is elastic in a direction of an axis Li of the elastic shaft 3, to adjust a size of the second gap U2. For example, when no external force is applied, the elastic shaft 3 provides the third support strip 21 and the fourth support strip 22 with an elastic force that enables the third support strip 21 and the fourth support strip 22 to be away from each other. When the external forces are applied to the third support strip 21 and the fourth support strip 22, the third support strip 21 and the fourth support strip 22 are close to each other, and correspondingly, the elastic shaft 3 contracts.

[0122] Based on the foregoing implementations, with reference to FIG. 8 and FIG. 9, when the first foldable plate 1 and the second foldable plate 2 are in the closed state (that is, the first foldable plate 1 and the second foldable plate 2 are folded together), the third support strip 21 and the fourth support strip 22 are located in the first gap U1, and the first clamping portion M1 is clamped to the second clamping portion M2.

[0123] For example, as shown in FIG. 7 and FIG. 9, the first clamping portion M1 may be a clamping groove, and the second clamping portion M2 may be a bump. Alternatively, the first clamping portion M1 may be a bump, and correspondingly, the second clamping portion M2 may be a clamping groove.

[0124] When the first foldable plate 1 and the second foldable plate 2 are in the closed state, the bump is located in the clamping groove. In other words, the first clamping portion M1 is clamped to the second clamping portion M2.

[0125] For example, as shown in FIG. 7, the first clamping portion M1 is disposed away from the end that is of the first foldable plate 1 and that is rotatably connected to the second foldable plate 2, and the second clamping portion M2 is disposed away from the end that is of the second foldable plate 2 and that is rotatably connected to the first foldable plate 1. In this way, when the first foldable plate 1 and the second foldable plate 2 are folded together and closed, the first clamping portion M1 and the second clamping portion M2 are disposed close to the elastic shaft 3, so that firmness of the clamping between the first clamping portion M1 and the second clamping portion M2 can be enhanced under an elastic action of the elastic shaft 3.

[0126] In the connection structure 30 provided in this embodiment of this application, the clamping and separation between the first clamping portion M1 and the second clamping portion M2 can be controlled by using the elastic force of the elastic shaft 3 and the external force applied to the second foldable plate 2, so that closing and opening of the first foldable plate 1 and the second foldable plate 2 is controlled.

[0127] For example, the first foldable plate 1 and the second foldable plate 2 are closed, and the side faces that are of the third support strip 21 and the fourth support strip 22 and that face away from each other are pressed, so that the third support strip 21 and the fourth support strip 22 are close to each other, and the third support strip 21 and the fourth support strip 22 are smoothly placed in the first gap U1. In this case, the external force is removed, the third support strip 21 and the fourth support strip 22 may be away from each other under the elastic force of the elastic shaft 3, and therefore, the second clamping portion M2 on the third support strip 21 and the fourth support strip 22 are driven to be successfully clamped to the first clamping portion M1 on the first support strip 11 and the second support strip 12. In this way, the first foldable plate 1 and the second foldable plate 2 are closed, and a closed state between the first foldable plate 1 and the second foldable plate 2 is maintained by using the first clamping portion M1 and the second clamping portion M2.

[0128] Similarly, when the first foldable plate 1 and the second foldable plate 2 need to be opened, the side faces that are of the third support strip 21 and the fourth support strip 22 and that face away from each other are pressed, so that the third support strip 21 and the fourth support strip 22 are close to each other, that is, the third support strip 21 is away from the first support strip 11 and the fourth support strip 22 is away from the second support strip 12, and therefore, the second clamping portion M2 on the third support strip 21 and the fourth support strip 22 are driven to be removed from the first clamping portion M1 on the first support strip 11 and the second support strip 12. In this way, the second foldable plate 2 is smoothly taken out from the first gap U1 and is opened.

[0129] In the connection structure 30 provided in this embodiment of this application, the connection structure 30 can be closed and opened only by using the elastic shaft 3 and clamping portions (including the first clamping portion M1 and the second clamping portion M2) disposed on the first foldable plate 1 and the second foldable plate 2. A structure design of the connection structure 30 is simple, an appearance is simple, and assembly difficulty is low during preparation. Assembly can be completed only by installing the elastic shaft 3 (for example, a spring bar). After the assembly is completed, stability of the connection structure 30 is good. In addition, the connection structure 30 has a small quantity of components, so that costs can be reduced.

[0130] In some embodiments, as shown in FIG. 6, FIG. 7, and FIG. 8, when the connection structure 30 further includes a connection assembly 4, at least one rotating shaft 42 is rotatably connected to the second foldable plate 2 through the elastic shaft 3, so that a component outside the connection structure 30 is connected to the second foldable plate 2, for example, with reference to FIG. 3, so that the second strap 20 is connected to the second foldable plate 2.

[0131] In some embodiments, as shown in FIG. 6 and FIG. 7, the at least one rotating shaft 42 includes a first rotating shaft 421 and a second rotating shaft 422 that are spaced from each other.

[0132] For example, as shown in FIG. 7, a hole is provided on each of the first rotating shaft 421 and the second rotating shaft 422. The hole is configured to allow the elastic shaft 3 to pass through.

[0133] For example, as shown in FIG. 7, the first rotating shaft 421 and the second rotating shaft 422 may be installed on a face cover 41 by using screws.

[0134] Refer to FIG. 7. The third support strip 21 includes a first connection portion 211 and a second connection portion 212 that are sequentially arranged in a direction of an axis Li of the elastic shaft 3, and the first connection portion 211 is away from the fourth support strip 22 relative to the second connection portion 212.

[0135] Refer to FIG. 7. The fourth support strip 22 includes a third connection portion 221 and a fourth connection portion 222 that are sequentially arranged in the direction of the axis Li of the elastic shaft 3, and the third connection portion 221 is away from the third support strip 21 relative to the fourth connection portion 222.

[0136] For example, as shown in FIG. 7, the first connection portion 211 and the second connection portion 212 are integrally disposed, and the third connection portion 221 and the fourth connection portion 222 are integrally disposed.

[0137] For example, as shown in FIG. 7, there is a spacing between the first connection portion 211 and the second connection portion 212, and there is a spacing between the third connection portion 221 and the fourth connection portion 222.

[0138] For example, with reference to FIG. 10, the first connection portion 211 is provided with a blind hole. The blind hole is configured to place one end of the elastic shaft 3. The second connection portion 212 is provided with a hole. The hole is configured to allow the elastic shaft 3 to pass through. The third connection portion 221 is provided with a blind hole. The blind hole is configured to place the other end of the elastic shaft 3. The fourth connection portion 222 is provided with a hole. The hole is configured to allow the elastic shaft 3 to pass through.

[0139] Refer to FIG. 6 and FIG. 10. The first rotating shaft 421 is disposed between the first connection portion 211 and the second connection portion 212, and the second rotating shaft 422 is disposed between the third connection portion 221 and the fourth connection portion 222.

[0140] For example, as shown in FIG. 6 and FIG. 10, the first connection portion 211, the first rotating shaft 421, the second connection portion 212, the fourth connection portion 222, the second rotating shaft 422, and the third connection portion 221 are sequentially disposed in the direction of the axis Li of the elastic shaft 3. The elastic shaft 3 sequentially connects the first connection portion 211, the first rotating shaft 421, the second connection portion 212, the fourth connection portion 222, the second rotating shaft 422, and the third connection portion 221 in series.

[0141] Refer to FIG. 6 and FIG. 10. One end of the elastic shaft 3 sequentially passes through the second connection portion 212 and the first rotating shaft 421 to abut against the first connection portion 211. The other end of the elastic shaft 3 sequentially passes through the fourth connection portion 222 and the second rotating shaft 422 to abut against the third connection portion 221.

[0142] The first connection portion 211, the first rotating shaft 421, the second connection portion 212, the fourth connection portion 222, the second rotating shaft 422, and the third connection portion 221 are sequentially connected in series through the elastic shaft 3, so that the connection assembly 4 is connected to the second foldable plate 2, and finally the second strap 20 is connected to the second foldable plate 2.

[0143] In addition, the first rotating shaft 421 is disposed between the first connection portion 211 and the second connection portion 212, and the second rotating shaft 422 is disposed between the third connection portion 221 and the fourth connection portion 222, to limit the third support strip 21 and the fourth support strip 22 of the second foldable plate 2.

[0144] For example, a distance between and positions of the first rotating shaft 421 and the second rotating shaft 422 are fixed. When the external force is applied to make the third support strip 21 and the fourth support strip 22 to be close to each other, the first connection portion 211 and the third connection portion 221 gradually move toward the first rotating shaft 421 and the second rotating shaft 422 respectively. After the first connection portion 211 is in contact with the first rotating shaft 421 and the third connection portion 221 is in contact with the second rotating shaft 422, the third support strip 21 and the fourth support strip 22 cannot move toward each other anymore under a limiting action of the first rotating shaft 421 and the second rotating shaft 422, so that a problem that the second foldable plate 2 is broken because the third support strip 21 and the fourth support strip 22 are excessively close due to an excessively large applied external force can be effectively avoided.

[0145] For example, the distance between and positions of the first rotating shaft 421 and the second rotating shaft 422 are fixed. When no external force is applied, the third support strip 21 and the fourth support strip 22 have a tendency to be away from each other under the elastic action of the elastic shaft 3. Under the elastic force of the elastic shaft 3, the second connection portion 212 is in contact with the first rotating shaft 421, and the fourth connection portion 222 is in contact with the second rotating shaft 422. The third support strip 21 and the fourth support strip 22 cannot be away from each other anymore under the limiting action of the first rotating shaft 421 and the second rotating shaft 422, so that a problem that the elastic shaft 3 falls off because the second gap U2 between the third support strip 21 and the fourth support strip 22 is excessively large can be effectively avoided.

[0146] In some embodiments, as shown in FIG. 7, a distance L1 between the first connection portion 211 and the second connection portion 212 is greater than a thickness L2 of the first rotating shaft 421 in the direction of the axis Li of the elastic shaft 3. A distance L3 between the third connection portion 221 and the fourth connection portion 222 is greater than a thickness L4 of the second rotating shaft 422 in the direction of the axis Li of the elastic shaft 3.

[0147] Refer to FIG. 7. The distance between the first rotating shaft 421 and the second rotating shaft 422 is fixed. In a process in which the third support strip 21 and the fourth support strip 22 are close to each other under the external force or away from each other under the elastic force of the elastic shaft 3, the first connection portion 211 and the second connection portion 212 move relative to the first rotating shaft 421 located between the first connection portion 211 and the second connection portion 212, and the third connection portion 221 and the fourth connection portion 222 move relative to the second rotating shaft 422 located between the third connection portion 221 and the fourth connection portion 222. The distance L1 between the first connection portion 211 and the second connection portion 212 is set to be greater than the thickness L2 of the first rotating shaft 421 in the direction of the axis Li of the elastic shaft 3, and the distance L3 between the third connection portion 221 and the fourth connection portion 222 is set to be greater than the thickness L4 of the second rotating shaft 422 in the direction of the axis Li of the elastic shaft 3, so that the first rotating shaft 421 and the second rotating shaft 422 are prevented from limiting the third support strip 21 and the fourth support strip 22 to be close to or away from each other. Therefore, effective clamping and separation between the first clamping portion M1 and the second clamping portion M2 are ensured.

[0148] In some embodiments, as shown in FIG. 6, FIG. 7, and FIG. 8, the connection structure 30 further includes a hinge shaft 5. The first foldable plate 1 is connected to the second foldable plate 2 through the hinge shaft 5. For example, the first support strip 11, the second support strip 12, the third support strip 21, and the fourth support strip 22 are rotatably connected through the hinge shaft 5. Refer to FIG. 6, at hinge positions, the third support strip 21 and the fourth support strip 22 are located between the first support strip 11 and the second support strip 12.

[0149] In some other embodiments, the connection structure 30 may include a hinge structure. The first foldable plate 1 is rotatably connected to the second foldable plate 2 through the hinge structure. For example, the first support strip 11 and the second support strip 12 are fastened to one side of the hinge structure, and the third support strip 21 and the fourth support strip 22 are fastened to another side of the hinge structure. The first foldable plate 1 and the second foldable plate 2 may be closed under an action of the hinge structure.

[0150] FIG. 11 is a sectional view along an axis La of the hinge shaft 5 in FIG. 8. In some embodiments, as shown in FIG. 11, a part that is of the third support strip 21 and that is close to the hinge shaft 5 is connected to a part that is of the fourth support strip 22 and that is close to the hinge shaft 5.

[0151] For example, a case in which the part that is of the third support strip 21 and that is close to the hinge shaft 5 is connected to the part that is of the fourth support strip 22 and that is close to the hinge shaft 5 includes that the part that is of the third support strip 21 and that is close to the hinge shaft 5 and the part that is of the fourth support strip 22 and that is close to the hinge shaft 5 are integrally disposed or, as shown in FIG. 10, the part that is of the third support strip 21 and that is close to the hinge shaft 5 abuts against the part that is of the fourth support strip 22 and that is close to the hinge shaft 5.

[0152] Refer to FIG. 6. The second gap U2 is provided away from the hinge shaft 5. In other words, an end that is of the second foldable plate 2 and that is away from the hinge shaft 5 may be pressed to implement motion of the third support strip 21 and the fourth support strip 22 that are toward each other. In this case, structures such as the elastic shaft 3 are all disposed on the end that is of the second foldable plate 2 and that is away from the hinge shaft 5.

[0153] A part that is of the third support strip 21 and that is close to the hinge shaft 5 is disposed to be connected to a part that is of the fourth support strip 22 and that is close to the hinge shaft 5, and the second gap U2 is provided away from the hinge shaft 5, so that the end that is of the second foldable plate 2 and that is away from the hinge shaft 5 can enable the third support strip 21 and the fourth support strip 22 to be close to each other. Therefore, the first clamping portion M1 is clamped to the second clamping portion M2.

[0154] In some embodiments, a width of a part that is of the second gap U2 and that is away from the hinge shaft 5 is greater than a width of a part that is of the second gap U2 and that is close to the hinge shaft 5. The width is a size of the second gap U2 in the direction of the axis Li of the elastic shaft 3.

[0155] For example, in a direction from the elastic shaft 3 to the hinge shaft 5, the width of the second gap U2 gradually decreases or sequentially decreases in a stepped manner.

[0156] Through the foregoing disposition, the third support strip 21 and the fourth support strip 22 that are located on the end that is of the second foldable plate 2 and that is away from the hinge shaft 5 can be more elastic and more easily close to each other. This helps the first clamping portion M1 clamp to the second clamping portion M2.

[0157] In some embodiments, as shown in FIG. 6 and FIG. 7, the first foldable plate 1 further includes a connection strip 13. The connection strip 13 is disposed between the first support strip 11 and the second support strip 12, and two ends of the connection strip 13 are respectively connected to the first support strip 11 and the second support strip 12.

[0158] For example, as shown in FIG. 7, the connection strip 13 is disposed in the first gap U1.

[0159] The connection strip 13 is configured to fasten the first support strip 11 to the second support strip 12, to avoid a problem that adaptability between the second foldable plate 2 and the first foldable plate 1 after the second foldable plate 2 and the first foldable plate 1 are closed is reduced because the first gap U1 that is configured to receive the second foldable plate 2 is deformed, for example, a width of the first gap U1 becomes narrow. In addition, the connection strip 13 is disposed in the first gap U1. In this way, a problem that a surface of one side that is of the connection structure 30 and that is in contact with a wrist of a user is uneven because a degree of folding of the second foldable plate 2 (protruding toward the wrist relative to the first foldable plate 1) is excessively large can be avoided, and wearing comfort is improved.

[0160] As shown in FIG. 9, a groove 23 is further provided on each of the third support strip 21 and the fourth support strip 22. When the first foldable plate 1 and the second foldable plate 2 are in the closed state, the connection strip 13 is located in the groove 23. The groove 23 adapted to the connection strip 13 is provided, so that the connection strip 13 can be further prevented from increasing a thickness of the closed connection structure 30 in addition to preventing the degree of folding of the second foldable plate 2 from being excessively large. In this way, after the first foldable plate 1 and the second foldable plate 2 are closed, on a side close to the wrist, the first foldable plate 1 and the second foldable plate 2 are located on a same plane or a same curved surface. Therefore, wearing comfort of the watch 100 is improved.

[0161] FIG. 12 is a diagram of a structure of a first foldable plate 1 according to an embodiment of this application. In some embodiments, as shown in FIG. 12, the first foldable plate 1 includes a connection plate 14. The connection plate 14 is disposed between the first support strip 11 and the second support strip 12, and two side edges that are of the connection plate 14 and that face each other are respectively connected to the first support strip 11 and the second support strip 12.

[0162] The connection plate 14, a side face that is of the first support strip 11 and that is close to the connection plate 14, and a side face that is of the second support strip 12 and that is close to the connection plate form a receiving groove 15; and when the first foldable plate 1 and the second foldable plate 2 are in the closed state, the third support strip 21 and the fourth support strip 22 are at least partially located in the receiving groove 15. In other words, the second foldable plate 2 is located in the receiving groove 15.

[0163] The connection plate 14 is disposed, and, when the first foldable plate 1 and the second foldable plate 2 are in the closed state, the second foldable plate 2 is disposed to be located in the receiving groove 15, so that the second foldable plate 2 can be prevented from being in contact with the wrist of the user. In this way, the wrist of the user can be prevented from being pinched due to interaction between the second foldable plate 2 and the first foldable plate 1. Therefore, the wearing comfort of the watch 100 is improved.

[0164] For example, the connection plate 14 is integrated with the first support strip 11 and the second support strip 12.

[0165] For example, the first support strip 11, the second support strip 12, and the connection plate 14 are disposed in an arc shape, and a bending radian of the connection plate 14 is approximately the same as bending radians of the first support strip 11 and the second support strip 12.

[0166] For example, on a side that is of the first foldable plate 1 and that is close to the wrist, the connection plate 14, the first support strip 11, and the second support strip 12 are located on a same curved surface. In this way, comfort of the wrist of the user when wearing the watch 100 can be improved.

[0167] For example, in this embodiment, a thickness of the second foldable plate 2 is less than or equal to a depth of the receiving groove 15, so that the first foldable plate 1 and the second foldable plate 2 can be smoothly closed.

[0168] For example, in this embodiment, one end of the first foldable plate 1 is connected to one end of the second foldable plate 2 through the hinge structure, so that, after the first foldable plate 1 and the second foldable plate 2 are closed, when the watch 100 is worn on the wrist of the user, the second foldable plate 2 is away from the wrist of the user relative to the first foldable plate 1.

[0169] For example, in this embodiment, the first clamping portion M1 is located above an upper surface of the connection plate 14. The upper surface of the connection plate 14 is a surface of a side that is of the connection plate 14 and that is relatively away from the wrist of the user when the watch 100 is worn on the wrist of the user. The position above the upper surface of the connection plate 14 is the side that is of the connection plate 14 and that is relatively away from the wrist of the user when the watch 100 is worn on the wrist of the user. In this way, it is ensured that the second clamping portion M2 on the second foldable plate 2 can be smoothly clamped to the first clamping portion M1.

[0170] In some embodiments, as shown in FIG. 7, the third support strip 21 further includes a first protrusion portion 213. The first protrusion portion 213 is disposed on the side that is of the third support strip 21 and that is away from the fourth support strip 22. The fourth support strip 22 further includes a second protrusion portion 223. The second protrusion portion 223 is disposed on the side that is of the fourth support strip 22 and that is away from the third support strip 21.

[0171] The first protrusion portion 213 and the second protrusion portion 223 are configured to drive, under an action of an external force, the third support strip 21 and the fourth support strip 22 to be close to each other, so that the clamping and separation between the first clamping portion M1 and the second clamping portion M2 are smoothly implemented. For example, when the connection structure 30 is closed, the first protrusion portion 213 and the second protrusion portion 223 are simultaneously pressed by fingers, so that the third support strip 21 and the fourth support strip 22 are close to each other. Therefore, the second clamping portion M2 on the second foldable plate 2 is removed from the first clamping portion M1 on the first foldable plate 1. In other words, the second foldable plate 2 is removed from the first foldable plate 1, to open the connection structure 30.

[0172] For example, with reference to FIG. 7, the first protrusion portion 213 and the second protrusion portion 223 are located on an end portion of the second foldable plate 2, and the end portion is away from an end that is of the second foldable plate 2 and that is rotatably connected to the first foldable plate 1. For example, the first protrusion portion 213 and the second protrusion portion 223 are located on one end that is of the second foldable plate 2 and on which the second gap U2 is provided. This helps the third support strip 21 and the fourth support strip 22 be close to each other after the first protrusion portion 213 and the second protrusion portion 223 are pressed.

[0173] For example, with reference to FIG. 6, the first protrusion portion 213 and the second protrusion portion 223 are located on the axis Li of the elastic shaft 3. When the first foldable plate 1 and the second foldable plate 2 are in the closed state, the first protrusion portion 213 and the second protrusion portion 223 protrude from two side faces that are of the first support strip 11 and the second support strip 12 and that are away from each other (with reference to FIG. 2 and FIG. 8). This helps press the first protrusion portion 213 and the second protrusion portion 223 when the first foldable plate 1 and the second foldable plate 2 are in the closed state, and the first support strip 11 and the second support strip 12 are prevented from blocking pressing paths of the first protrusion portion 213 and the second protrusion portion 223.

[0174] For example, with reference to FIG. 7 and FIG. 10, when the third support strip 21 includes the first connection portion 211 and the second connection portion 212, the first protrusion portion 213 is disposed on a side that is of the first connection portion 211 and that is away from the second connection portion 212.

[0175] For example, with reference to FIG. 7, the first connection portion 211, the second connection portion 212, and the first protrusion portion 213 are integrally disposed.

[0176] For example, with reference to FIG. 7 and FIG. 10, when the fourth support strip 22 includes the third connection portion 221 and the fourth connection portion 222, the second protrusion portion 223 is disposed on a side that is of the third connection portion 221 and that is away from the fourth connection portion 222.

[0177] For example, with reference to FIG. 7, the third connection portion 221, the fourth connection portion 222, and the second protrusion portion 223 are integrally disposed.

[0178] In some embodiments, as shown in FIG. 6, the first foldable plate 1 and the second foldable plate 2 are arc-shaped. The first foldable plate 1 and the second foldable plate 2 that are designed in an arc shape better conform to a contour of the wrist, so that the wearing comfort of the watch 100 can be improved.

[0179] Refer to FIG. 8. When the first foldable plate 1 and the second foldable plate 2 are in the closed state, the first foldable plate 1 and the second foldable plate 2 have a same bending direction and a same bending radian. In this way, when the connection structure 30 is in the closed state, the first foldable plate 1 and the second foldable plate 2 are closed tightly, and a structure is compact. In addition, the curved surface on the side close to the wrist is smooth, and there is no excessive protrusion or depression. This can avoid a sensation of a foreign object on the wrist after the watch 100 is worn, and improve comfort of the user.

[0180] It should be noted that, in this application, only the watch 100 is used as an example to describe beneficial effect of the connection structure 30. However, the connection structure 30 in this application may be used for another wearable device other than the watch 100, for example, another handheld device including a band, a wristband, an electronic handcuff, or the like, a head mounted device including a VR head-mounted display, smart glasses, or the like, and a foot mounted device including a smart anklet or the like, to facilitate wearing and convenient removal of the wearable devices. Therefore, all devices that can use the connection structure 30 provided in embodiments of this application fall within the protection scope of this application. This application does not constitute a limitation on a specific device.

[0181] The foregoing descriptions are merely specific implementations of this application, but are not intended to limit the protection scope of this application. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in the present disclosure shall fall within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.