LOCKING MECHANISM AND FOLDABLE FENCE

Abstract

A locking mechanism and a foldable fence are provided. When the locking column is placed in the locked position, the elastic member is in a naturally extended state to enable the locking column to protrude out of the first pressing hole from the first cavity, the first covering end covers the first pressing hole, and the fixing member remains fixed relative to the first cavity. When the locking column is placed in the unlocked position, the first covering end is separated from the first pressing hole, the elastic member is compressed by force, the locking column retracts from the first pressing hole into the first cavity, and the fixing member can be moved out of the first cavity. In the foldable fence, the first fixing rod is the fixing member, and the first movable rod is the movable member. The entire fence is easily folded and convenient for use.

Claims

1. A locking mechanism, comprising: a shell, wherein the shell comprises a first cavity and at least one second cavity, the first cavity is not communicated with the second cavity, the first cavity is used to place a fixing member, the second cavity is used to place a movable member, and the shell is provided with a first pressing hole on an inner side wall where the first cavity is located; a locking cover, wherein the locking cover is arranged on an outer side wall of the shell, the locking cover has a first connecting end and a first covering end, the first connecting end is hinged with the shell, and the first covering end is used to cover the first pressing hole; a locking column, wherein the locking column is arranged on the fixing member, and an elastic member is further arranged between the locking column and the fixing member; wherein the locking column is configured to be placed in a locked position and an unlocked position, when the locking column is placed in the locked position, the elastic member is in a naturally extended state to enable the locking column to protrude out of the first pressing hole from the first cavity, and the first covering end covers the first pressing hole; when the locking column is placed in the unlocked position, the first covering end is separated from the first pressing hole, the elastic member is compressed by force, and the locking column retracts from the first pressing hole into the first cavity.

2. The locking mechanism according to claim 1, wherein the shell is further provided with a first protrusion, the first protrusion is arranged at a hinge between the first connecting end and the shell, and the first protrusion is arranged on a rotation path of the first connecting end; the first connecting end is provided with a first groove of a first predetermined length, a groove body of the first groove extends corresponding to the rotation path of the first connecting end, and the first protrusion is adapted to the first groove.

3. The locking mechanism according to claim 2, further comprising: a torsion spring, wherein the torsion spring is sleeved on a hinge axis between the first connecting end and the shell, one end of the torsion spring is connected to the shell, and the other end of the torsion spring is connected to the locking cover.

4. The locking mechanism according to claim 1, further comprising: a first pressing plate, wherein one end of the first pressing plate is connected to an edge of the first pressing hole, the other end of the first pressing plate extends toward the first pressing hole, and a projection of the locking column in a pressing direction is placed in an area covered by the first pressing plate.

5. The locking mechanism according to claim 4, wherein an outer surface of the first pressing plate is provided with anti-slip protrusions distributed in a predetermined manner.

6. The locking mechanism according to claim 1, wherein the shell further comprises: a first opening, wherein the first opening is arranged toward a first direction, and the first opening is communicated with the second cavity; a second opening, wherein the second opening is arranged toward a second direction, there is a certain angle between the first direction and the second direction, and the first opening and the second opening are communicated and arranged adjacent to each other.

7. The locking mechanism according to claim 6, wherein the shell further comprises: a third opening, wherein the third opening is arranged toward a third direction, and the third opening is communicated with the first cavity; a fourth opening, wherein the fourth opening is arranged opposite to the third opening, and the fourth opening is communicated with the first cavity.

8. The locking mechanism according to claim 7, wherein a number of the second cavity is multiple, a plurality of second cavities are distributed along a circumferential direction of the first cavity, and two adjacent second cavities are arranged at a predetermined angle.

9. The locking mechanism according to claim 8, wherein the predetermined angle is 90 degrees or 180 degrees.

10. A foldable fence, comprising: a locking mechanism, wherein the locking mechanism is the locking mechanism according to claim 1; a first fixing rod, wherein the first fixing rod is the fixing member in the locking mechanism, the first fixing rod is placed in the first cavity, the first fixing rod is configured to move relative to the first cavity, and the locking column is connected to the first fixing rod through the elastic member; a first movable rod, wherein the first movable rod is the movable member in the locking mechanism, one first movable rod is arranged in one second cavity, an end of the first movable rod is hinged with the shell on a side wall where the second cavity is located, and the first movable rod is configured to rotate relative to the second cavity.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, characteristics, and effects of the specific embodiments and other related contents of the present disclosure, and cannot be considered as restriction to the present disclosure.

[0018] In the drawings of the specification:

[0019] FIG. 1 is a schematic diagram of the locking mechanism described in the specific embodiment;

[0020] FIG. 2 is a schematic diagram showing a cross section of the locking mechanism described in the specific embodiment;

[0021] FIG. 3 is a schematic diagram of the shell described in the specific embodiment;

[0022] FIG. 4 is a schematic diagram showing a cross section of the shell described in the specific embodiment;

[0023] FIG. 5 is a schematic diagram showing a folded state of the foldable fence described in the specific embodiment;

[0024] FIG. 6 is a schematic diagram showing a use state of the foldable fence described in the specific embodiment.

[0025] The reference numerals involved in the above figures are illustrated as follows: [0026] 1, shell; [0027] 11, first cavity; [0028] 12, second cavity; [0029] 13, first pressing hole; [0030] 14, first protrusion; [0031] 15, first opening; [0032] 16, second opening; [0033] 17, third opening; [0034] 18, fourth opening; [0035] 2, locking column; [0036] 3, locking cover; [0037] 31, first connecting end; [0038] 32, first covering end; [0039] 33, first groove; [0040] 4, elastic member; [0041] 5, torsion spring; [0042] 6, first pressing plate; [0043] 61, anti-slip protrusion; [0044] 7, first fixing rod; [0045] 8, first movable rod; [0046] a, first direction; [0047] b, second direction; [0048] c, third direction.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] To explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and purposes and effects that can be achieved of the present disclosure, the following is a detailed description in combination with the listed specific embodiments and the accompanying drawings. The embodiments described in the present disclosure are only used to more clearly illustrate the technical solutions of the present disclosure and therefore only used as examples, and cannot be used to limit the scope of protection of the present disclosure.

[0050] The embodiment mentioned in the present disclosure means that the specific features, structures, or characteristics described in combination with the embodiment can be included in at least one embodiment of the present disclosure. The term embodiment appearing in various places of the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or relevance with other embodiments. In principle, in the present disclosure, as long as there is no technical contradiction or conflict, various technical features mentioned in each embodiment can be combined in any way to form the corresponding implementable technical solution.

[0051] Unless otherwise defined, the meaning of the technical terms used in the present disclosure is the same as the meaning generally understood by skilled persons in the art to which the present disclosure belongs; the use of relevant terms in the present disclosure is only for describing the specific embodiments, and is not intended to limit the present disclosure.

[0052] In the description of the present disclosure, the term and/or is an expression used to describe the logical relationship between objects, indicating that there may be three relationships, for example, A and/or B means: A exists, B exists, and A and B exist at the same time. In addition, the character / in the present disclosure generally indicates that the objects associated before and after are in an or logical relationship.

[0053] In the present disclosure, the terms such as first, second, and the like are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority, or order relationship between these entities or operations.

[0054] Without further restrictions, in the present disclosure, the expression include, comprise, have/has, or other similar expressions used in the sentence are intended to cover non-exclusive inclusion, and these expressions do not exclude that there may be other elements in the process, method, or product including the elements, so that the process, method, or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method, or product.

[0055] As having the same understanding in the Guidelines for Patent Examination, in the present disclosure, the expressions such as greater than, less than, exceed, and the like are understood to exclude the number; the expressions such as above, below, within, and the like are understood to include the number. In addition, in the description of the embodiments of the present disclosure, multiple/a plurality of means more than two (including two), and similar expressions related to multiple/a plurality of are also understood in this way, such as multiple/a plurality of groups, multiple/a plurality of times, etc., unless otherwise clearly and specifically limited.

[0056] In the description of the embodiments of the present disclosure, the space-related expressions used, such as center, longitudinal, lateral, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, perpendicular, top, bottom, inside, outside, clockwise, counterclockwise, axial, radial, circumferential, etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present disclosure or facilitating the understanding of the reader, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as restrictions to the embodiments of the present disclosure.

[0057] Unless otherwise expressly specified or limited, in the description of the embodiments of the present disclosure, the terms install, connect, communicate, fix, arrange, and the like used should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integrated setting; alternatively, it can be a mechanical connection, an electrical connection, or a communication connection; or it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal communication between two elements or an interaction relationship between two elements. For those skilled in the art to which the present disclosure belongs, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0058] Referring to FIG. 1 to FIG. 4, in the first aspect, the present embodiment provides a locking mechanism, including a shell 1, a locking cover 3, and a locking column 2. The shell 1 includes a first cavity 11 and at least one second cavity 12. The first cavity 11 is not communicated with the second cavity 12. The first cavity 11 is used to place a fixing member, and the second cavity 12 is used to place a movable member. The shell 1 is provided with a first pressing hole 13 on the inner side wall where the first cavity 11 is located. The locking cover 3 is arranged on the outer side wall of the shell 1, and the locking cover 3 has a first connecting end 31 and a first covering end 32. The first connecting end 31 is hinged with the shell 1, and the first covering end 32 is used to cover the first pressing hole 13. The locking column 2 is arranged on the fixing member, and an elastic member 4 is further arranged between the locking column 2 and the fixing member. The locking column 2 can be placed in a locked position and an unlocked position. When the locking column 2 is placed in the locked position, the elastic member 4 is in a naturally extended state to enable the locking column 2 to protrude out of the first pressing hole 13 from the first cavity 11, and the first covering end 32 covers the first pressing hole 13. When the locking column 2 is placed in the unlocked position, the first covering end 32 is separated from the first pressing hole 13, the elastic member 4 is compressed by force, and the locking column 2 retracts from the first pressing hole 13 into the first cavity 11.

[0059] In the present embodiment, the shell 1 has the first cavity 11 and the second cavity 12. The first cavity 11 is used to accommodate the fixing member, and the second cavity 12 is used to accommodate the movable member. It can be understood that the first cavity 11 and the fixing member can be movably connected. In the first cavity 11 shown in FIG. 4, the fixing member can reciprocate along the axial direction of the first cavity 11 relative to the shell 1. The second cavity 12 and the movable member can also be movably connected. In the second cavity 12 shown in FIG. 4, the second cavity 12 is hinged with the movable member, and the movable member can rotate relative to the second cavity 12. The specific connection method can be set according to actual needs.

[0060] Referring to FIG. 3, the first pressing hole 13 is also provided on the inner side wall where the first cavity 11 is located. The first pressing hole 13 penetrates through the shell 1, that is, a user can directly touch the fixing member placed in the first cavity 11 through the first pressing hole 13. Further, the locking column 2 is provided on the fixing member. As shown in FIG. 2, the locking column 2 is elastically connected to the fixing member through the elastic member 4, so that the locking column 2 can reciprocate along the axial direction of the locking column 2 relative to the fixing member. The elastic member 4 pushes the locking column 2 outward when not subjected to a force, so as to keep the locking column 2 in the state of protruding out of the fixing member. When the locking column 2 protrudes out of the fixing member, it corresponds to the position of the first pressing hole 13 on the shell 1, that is, the locking column 2 can protrude out of the first pressing hole 13 through the first pressing hole 13.

[0061] When in use, the locking column 2 on the fixing member can be compressed by force, so that the fixing member can successfully penetrate into the first cavity 11. When the locking column 2 reaches the position of the first pressing hole 13, the force applied by the shell 1 on the locking column 2 disappears, and the locking column 2 is driven by the elastic member 4 to protrude out of the first pressing hole 13, that is, the locking column 2 is placed in the locked position. At this time, the elastic member 4 is in the naturally extended state, and the locking column 2 provides a limiting function for the fixing member in the first cavity 11, that is, making the fixing member and the first cavity 11 remain relatively fixed. When unlocking is required, the user can directly press the locking column 2 through the first pressing hole 13, and the locking column 2 is compressed by force and cannot provide the limiting function for the fixing member. At this time, the user keeps the elastic member 4 in a compressed state and moves the fixing member out of the first cavity 11, that is, the locking column 2 is placed in the unlocked position.

[0062] Further, in order to prevent the locking column 2 in the first pressing hole 13 from being accidentally touched during use, the present embodiment adds the locking cover 3. As shown in FIG. 1 and FIG. 2, the locking cover 3 has the first connecting end 31 and the first covering end 32. The first connecting end 31 is hinged with the shell 1 and arranged adjacent to the edge of the first pressing hole 13. The first covering end 32 can cover the area where the first pressing hole 13 is located without contacting the locking column 2. The first connecting end 31 and the first covering end 32 are two parts of the locking cover 3. The first connecting end 31 and the first covering end 32 can be integrally formed. When the locking column 2 is placed in the unlocked position, the locking cover 3 needs to be rotated first, so that the first covering end 32 of the locking cover 3 is separated from the first pressing hole 13, followed by pressing the locking column 2.

[0063] In some optional embodiments, the outside of the locking cover 3 can also be provided with a prompt graphic or text, such as an arrow, to indicate the unlocking direction, facilitating the use.

[0064] It can be understood that the fixing member and the movable member shown in the present embodiment can be any parts that need to be disassembled or slidably connected. For example, in the foldable fence described later, the movable member is a first movable rod 8, and the fixing member is a first fixing rod 7. Through this locking mechanism, it is only necessary to press the locking column 2 to realize the movement operation of the first fixing rod 7 relative to the first cavity 11, and meanwhile to achieve the bending operation of the first movable rod 8 relative to the first fixing rod 7 driven by the locking mechanism, thereby implementing the storage of the first fixing rod 7 and the first movable rod 8 without the need of separate disassembly or engagement. The entire fence is easily folded and convenient for use. At the same time, the locking cover 3 provided can prevent the foldable fence from being accidentally touched during use, effectively ensuring the stability of the foldable fence during use.

[0065] Referring to FIG. 1 and FIG. 3, in some embodiments, the shell 1 is further provided with a first protrusion 14, and the first protrusion 14 is arranged at the hinge between the first connecting end 31 and the shell 1 and arranged on the rotation path of the first connecting end 31. The first connecting end 31 is provided with a first groove 33 of a first predetermined length, the groove body of the first groove 33 extends corresponding to the rotation path of the first connecting end 31, and the first protrusion 14 is adapted to the first groove 33.

[0066] The shell 1 is provided with the first protrusion 14 arranged at the hinge between the first connecting end 31 and the shell 1. The first protrusion 14 is used to limit the rotation angle of the locking cover 3 to prevent the user from over-rotating. As a preferred embodiment, the first groove 33 is provided on the first connecting end 31, and the length of the first groove 33 can be set according to actual needs. The groove body of the first groove 33 extends in an arc shape, that is, the first groove 33 is an arc-shaped long groove, the first predetermined length corresponds to the arc length, and the arc length can be obtained by converting the rotation angle of the first connecting end 31. In actual use, the magnitude of the first predetermined length can be adjusted according to actual needs, thereby realizing the restriction of the rotation angle of the first connecting end 31 and the locking cover 3 as a whole. The first protrusion 14 is arranged in the first groove 33, making the joint between the locking cover 3 and the shell 1 more attractive. The first protrusion 14 is not exposed, which improves the visual beauty and realizes the rotation limiting function of the locking cover 3.

[0067] Referring to FIG. 2, in some embodiments, a torsion spring 5 is further included. The torsion spring 5 is sleeved on the hinge axis between the first connecting end 31 and the shell 1. One end of the torsion spring 5 is connected to the shell 1, and the other end of the torsion spring 5 is connected to the locking cover 3. In the present embodiment, one end of the torsion spring 5 is connected to the shell 1. Specifically, an unthreaded hole can be opened on the shell 1, and the bent end of the torsion spring 5 is placed in the unthreaded hole to achieve a hinge connection with the shell 1. Similarly, the other bent end of the torsion spring 5 can be placed in an unthreaded hole opened on the locking cover 3 to achieve a hinge connection between the torsion spring 5 and the locking cover 3. The torsion spring 5 is sleeved on the hinge axis between the first connecting end 31 and the shell 1. When the locking cover 3 is rotated, the torsion spring 5 is compressed by force. When the user completes the unlocking, the torsion spring 5 releases its elastic potential energy to drive the locking cover 3 to return to its original position, that is, driving the locking cover 3 to automatically cover the top of the first pressing hole 13, realizing the automatic reset function of the locking cover 3, facilitating the use.

[0068] Referring to FIG. 2 and FIG. 3, in some embodiments, a first pressing plate 6 is further included. One end of the first pressing plate 6 is connected to the edge of the first pressing hole 13, and the other end of the first pressing plate 6 extends toward the first pressing hole 13. The projection of the locking column 2 in the pressing direction is placed in the area covered by the first pressing plate 6. The first pressing plate 6 can be integrally formed with the shell 1. As shown in FIG. 2, the first pressing plate 6 covers the side where the locking column 2 protrudes. In this configuration, the area of the locking column 2 where a force is applied can be increased. That is, the user can transfer the force to the locking column 2 by pressing the first pressing plate 6. At the same time, it avoids the problem of uncomfortable use caused by excessive local force during pressing due to too small diameter of the locking column 2.

[0069] Further, referring to FIG. 3, in some embodiments, the outer surface of the first pressing plate 6 is provided with anti-slip protrusions 61 distributed in a predetermined manner. The anti-slip protrusions 61 can be a plurality of short horizontal protrusions arranged at intervals as shown in FIG. 3, or can be scattered circular protrusions, annular protrusions, etc., and the specific shape of the anti-slip protrusions 61 is not limited in the present embodiment. The arrangement of the anti-slip protrusions 61 can further increase the friction force between the user's hand and the first pressing plate 6, avoiding slipping during the user's pressing process and improving the use comfort.

[0070] Referring to FIG. 1, FIG. 3, and FIG. 4, in some embodiments, the shell 1 further includes a first opening 15 and a second opening 16. The first opening 15 is arranged toward a first direction a and communicated with the second cavity 12. The second opening 16 is arranged toward a second direction b. There is a certain angle between the first direction a and the second direction b. The first opening 15 and the second opening 16 are communicated and arranged adjacent to each other. In the present embodiment, the first opening 15 and the second opening 16 are arranged adjacent to each other and both communicated with the second cavity 12. At the same time, the first opening 15 and the second opening 16 are communicated with each other. This arrangement can provide a relatively large rotation range for the movable member hinged in the second cavity 12. Specifically, the angle between the first direction a and the second direction b can be set according to different rotation ranges required by the movable member. FIG. 4 shows the arrangement of the second cavity 12, the first opening 15, and the second opening 16 when the angle between the first direction a and the second direction b is 90 degrees. FIG. 5 shows the state of the movable member in the second cavity 12 in actual use.

[0071] Referring to FIG. 1, FIG. 3, and FIG. 4, in some embodiments, the shell 1 further includes a third opening 17 and a fourth opening 18. The third opening 17 is arranged toward a third direction c and communicated with the first cavity 11. The fourth opening 18 is arranged opposite to the third opening 17 and communicated with the first cavity 11. Further, in the present embodiment, the third opening 17 and the fourth opening 18 are included and are not communicated with each other, but the third opening 17 is communicated with the first cavity 11, and the fourth opening 18 is communicated with the first cavity 11. Specifically, the third direction c can be set according to actual needs. In the present embodiment, the third direction c is the direction opposite to the first direction a, as shown in FIG. 4; and FIG. 5 shows the storage of the fixing member and the movable member under this structure.

[0072] Referring to FIG. 3 and FIG. 4, in some embodiments, the number of the second cavity 12 is multiple, a plurality of second cavities 12 are distributed along the circumferential direction of the first cavity 11, and two adjacent second cavities 12 are arranged at a predetermined angle.

[0073] In some embodiments, the predetermined angle is 90 degrees or 180 degrees.

[0074] In the present embodiment, the number of the second cavity 12 can be multiple. For example, when there are three second cavities 12, the second cavities 12 can be distributed along the circumferential direction of the first cavity 11. It should be noted here that the multiple second cavities 12 can be distributed along the circumferential direction of the first cavity 11 at unequal intervals. As shown in FIG. 1, the number of the second cavity 12 is two, and the predetermined angle between two adjacent second cavities 12 is 180 degrees. In some embodiments, the locking mechanism is located at the corner of the foldable fence, and when the number of the second cavity 12 is two, the predetermined angle is 90 degrees. Similarly, in some embodiments, when the number of the second cavity 12 is three, there are three predetermined angles, two of which can be 90 degrees, and the rest one can be 180 degrees, and so on. The number of the second cavity 12 and the specific angle value of the predetermined angle can be set according to actual needs.

[0075] Referring to FIG. 5 and FIG. 6, in the second aspect, the present embodiment further provides a foldable fence, including a locking mechanism, a first fixing rod 7, and a first movable rod 8. The locking mechanism is the locking mechanism described in the first aspect. The first fixing rod 7 is the fixing member in the locking mechanism. The first fixing rod 7 is placed in the first cavity 11. The first fixing rod 7 can move relative to the first cavity 11. The locking column 2 is connected to the first fixing rod 7 through the elastic member 4. The first movable rod 8 is the movable member in the locking mechanism. One first movable rod 8 is arranged in one second cavity 12, and the end of the first movable rod 8 is hinged with the shell 1 on the side wall where the second cavity 12 is located. The first movable rod 8 can rotate relative to the second cavity 12. The present embodiment demonstrates the application of the locking mechanism in the foldable fence. FIG. 5 is a schematic diagram showing the use of the locking mechanism in the foldable fence in a folded state. Similarly, FIG. 6 is a schematic diagram showing the use state of the foldable fence.

[0076] In the above technical solution, the locking mechanism includes the shell 1, the locking cover 3, and the locking column 2. The shell 1 includes the first cavity 11 and at least one second cavity 12. The first cavity 11 is not communicated with the second cavity 12. The first cavity 11 is used to place the fixing member, and the second cavity 12 is used to place the movable member. The shell 1 is provided with the first pressing hole 13 on the inner side wall where the first cavity 11 is located. The locking cover 3 is arranged on the outer side wall of the shell 1, and the locking cover 3 has the first connecting end 31 and the first covering end 32. The first connecting end 31 is hinged with the shell 1, and the first covering end 32 is used to cover the first pressing hole 13. The locking column 2 is arranged on the fixing member, and the elastic member 4 is further arranged between the locking column 2 and the fixing member. The locking column 2 can be placed in a locked position and an unlocked position. When the locking column 2 is placed in the locked position, the elastic member 4 is in a naturally extended state to enable the locking column 2 to protrude out of the first pressing hole 13 from the first cavity 11, and the first covering end 32 covers the first pressing hole 13. At this time, the fixing member remains fixed relative to the first cavity 11. When the locking column 2 is placed in the unlocked position, the first covering end 32 is separated from the first pressing hole 13, the elastic member 4 is compressed by force, the locking column 2 retracts from the first pressing hole 13 into the first cavity 11, and the fixing member can be moved out of the first cavity 11. In the foldable fence, the first fixing rod 7 is the fixing member, and the first movable rod 8 is the movable member. Through this locking mechanism, it is only necessary to press the locking column 2 to realize the movement operation of the first fixing rod 7 relative to the first cavity 11, and meanwhile to achieve the bending operation of the first movable rod 8 relative to the first fixing rod 7 driven by the locking mechanism, thereby implementing the storage of the first fixing rod 7 and the first movable rod 8 without the need of separate disassembly or engagement. The entire fence is easily folded and convenient for use. At the same time, the locking cover 3 provided can prevent the foldable fence from being accidentally touched during use, effectively ensuring the stability of the foldable fence during use.

[0077] Finally, it should be noted that although the above-mentioned embodiments have been described in the text and drawings of the present disclosure, the patent protection scope of the present disclosure cannot be limited thereby. All technical solutions generated by replacement or modification of equivalent structures or equivalent processes based on the essential concept of the present disclosure and using the contents recited in the text and drawings of the present disclosure, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the patent protection scope of the present disclosure.