Abstract
A chair includes a frame assembly having a first side and a second side opposite each other. The frame assembly includes a first frame, a second frame, a sheet, and a covering member. The first frame has a first opening facing the first side. The second frame includes two opposite fixing portions and a second opening. The second opening faces the second side and overlaps the first opening in position. The sheet includes two opposite first regions, two opposite second regions, and a third region located between the second regions, the second regions are bent under combined pressure of the first frame and the second frame, and the third region is exposed between the first opening and the second opening. The covering member covers the first frame and the second frame and exposes the first opening, the second opening, and the third region.
Claims
1. A chair, comprising: a frame assembly, having a first side and a second side opposite each other, wherein the frame assembly comprises a first frame, a second frame, a sheet, and a covering member, wherein the first frame has a first opening facing the first side; the second frame is connected to the first frame, the second frame comprises two opposite fixing portions and a second opening located between the fixing portions, and the second opening faces the second side and overlaps the first opening in position; the sheet is located between the first frame and the second frame, the sheet comprises two opposite first regions, two opposite second regions, and a third region located between the second regions, each of the first regions is fixed at one of the fixing portions and adjacent to one of the second regions, the second regions are bent under a combined pressure of the first frame and the second frame, and the third region is exposed to the first opening and the second opening; and the covering member covers the first frame and the second frame.
2. The chair according to claim 1, wherein the first frame comprises two opposite protruding ribs, the protruding ribs are located on two opposite sides of the first opening, the second frame comprises two opposite grooves, and each of the protruding ribs is suitable to combine with one of the grooves and press the second region.
3. The chair according to claim 2, wherein the second regions cover the protruding ribs.
4. The chair according to claim 3, wherein the protruding rib is provided with at least one protruding portion, the groove is provided with at least one recess corresponding to the at least one protruding portion in position, and the sheet is clamped between the at least one protruding portion and the at least one recess.
5. The chair according to claim 4, wherein the at least one protruding portion has a plurality of needles arranged in a row, and the recess is an elongated groove that can accommodate the needles at the same time.
6. The chair according to claim 5, wherein the sheet is a net, and a diameter of the needles is equal to a size of the mesh opening of the net.
7. The chair according to claim 1, wherein the first frame and the second frame are provided with a plurality of grooves on a surface of a side away from the sheet.
8. The chair according to claim 1, wherein the first frame is provided with a first perforation, the second frame is provided with a second perforation, the first perforation corresponds to the second perforation in position, and the covering member extends from the first side to the second side via the first perforation and the second perforation.
9. The chair according to claim 1, wherein each of the first regions is surrounded by one of the second regions, and the fixing portions are located away from an outer peripheral edge of the second frame.
10. The chair according to claim 9, wherein the fixing portions have a third perforation, the first frame has a fourth perforation, a position of the third perforation corresponds to a position of the fourth perforation, and the sheet has a through-hole in the first region corresponding to the position of the third perforation and the fourth perforation.
11. The chair according to claim 1, wherein the second regions are located between the first regions, and the fixing portions protrude from an outer peripheral edge of the second frame.
12. The chair according to claim 11, wherein the fixing portions have a plurality of positioning posts, and the positioning posts pass through the first region.
13. The chair according to claim 1, wherein the covering member comprises an elastic portion and a protective layer, the elastic portion covers the first frame and the second frame, and the protective layer covers the elastic portion.
14. A chair, comprising: a frame assembly, having a first side and a second side opposite each other, wherein the frame assembly comprises a first frame, a second frame, a sheet, and a covering member, wherein the first frame has a first opening facing the first side; the second frame is connected to the first frame, the second frame comprises a second opening located in the middle, and the second opening faces the second side and overlaps the first opening in position; the sheet is located between the first frame and the second frame, the sheet comprises two opposite first regions, two opposite second regions, and a third region located between the second regions, each of the first regions is adjacent to one of the second regions, the second regions are bent under combined pressure of the first frame and the second frame, and the third region is exposed to the first opening and the second opening; and the covering member covers the first frame and the second frame.
15. A frame assembly suitable for a chair and having a first side and a second side opposite each other, wherein the frame assembly comprises: a first frame, having a first opening facing the first side; a second frame, connected to the first frame, wherein the second frame comprises two opposite fixing portions and a second opening located between the fixing portions, and the second opening faces the second side and overlaps the first opening in position; a sheet, located between the first frame and the second frame, wherein the sheet comprises two opposite first regions, two opposite second regions, and a third region located between the second regions,, each of the first regions is adjacent to one of the second regions, each of the first regions is fixed at one of the fixing portions, the second regions are bent under combined pressure of the first frame and the second frame, and the third region is exposed to the first opening and the second opening; and a covering member, covering the first frame and the second frame.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] FIG. 1 is a schematic diagram of a chair according to an embodiment of the present invention;
[0025] FIG. 2 is a schematic exploded view of a frame assembly in the embodiment in FIG. 1;
[0026] FIG. 3 is a schematic cross-sectional view, taken along line A-A in FIG. 2;
[0027] FIG. 4 is a schematic diagram of a combination process of a frame assembly in the embodiment in FIG. 2;
[0028] FIG. 5 is a schematic cross-sectional view, taken along line B-B in FIG. 2;
[0029] FIG. 6 is a schematic exploded view of a frame assembly according to another embodiment of the present invention;
[0030] FIG. 7 is a schematic cross-sectional view of a frame assembly in FIG. 6;
[0031] FIG. 8 is a schematic view of a disassembly of the frame assembly according to another embodiment of the present invention;
[0032] FIG. 9 is a schematic view of the second frame in the embodiment of FIG. 8;
[0033] FIG. 10 is a partially enlarged schematic view of part A of the second frame in the embodiment of FIG. 8;
[0034] FIG. 11 is a schematic view comparing the sheet in the embodiment of FIG. 8 with the embodiment of FIG. 6;
[0035] FIG. 12 is a partially enlarged schematic view of a portion B corresponding to portion A on the first frame in the embodiment of FIG. 8; and
[0036] FIG. 13 is a schematic view of an enlarged backside of a portion B corresponding to portion A.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0037] Terms used in the description of the embodiments of the present invention, for example, orientation or position relation such as above and below are described according to the orientation or position relation shown in the drawings. The above terms are used for facilitating description of the present invention rather than limiting the present invention, i.e., indicating or implying that the mentioned elements have to have specific orientations and to be configured in the specific orientations. In addition, terms such as first and second involved in the description or claims are merely used for naming the elements or distinguishing different embodiments or ranges rather than limiting the upper limit or lower limit of the quantity of the elements.
[0038] FIG. 1 is a schematic diagram of a chair according to an embodiment of the present invention. FIG. 2 is a schematic exploded view of a frame assembly in the embodiment in FIG. 1. FIG. 3 is a schematic cross-sectional view, taken along line A-A in FIG. 2. To clearly illustrate the related structure in detail, the shape of the frame assembly 2 is symmetrical on the left and right sides. The shape of frame assembly 2 in FIG. 2 is simplified and does not correspond to the shape of the frame assembly 2 in FIG. 1, and FIG. 3 only shows part of the cross-sectional view on one side illustrated.
[0039] As shown in FIG. 1, a chair 1 in the present invention in an embodiment includes a frame assembly 2. As shown in FIGS. 2 and 3, the frame assembly 2 has a first side S1 and a second side S2 opposite each other. The frame assembly 2 includes a first frame 21, a second frame 22, a sheet 23, and a covering member 24 (see FIG. 3). The first frame 21 has a first opening 210 facing the first side S1. The second frame 22 is connected to the first frame 21. The second frame 22 includes two opposite fixing portions 227 and a second opening 220 located between the fixing portions 227. The second opening 220 faces the second side S2 and overlaps the first opening 210 in position. The sheet 23 is located between the first frame 21 and the second frame 22. The sheet 23 includes two opposite first regions 231, two opposite second regions 232, and a third region 233 located between the second regions 232. Each of the first regions 231 is fixed at one of the fixing portions 227 and adjacent to one of the second regions 232. The second regions 232 are bent under the combined pressure of the first frame 21 and the second frame 22. The third region 233 is exposed to the first opening 210 and the second opening 220. The covering member 24 covers the first frame 21 and the second frame 22.
[0040] Specifically, in this embodiment, the chair 1 has, for example, a base 11, a seat cushion 12, a back cushion 13, and a headrest 14. The base 11 is, for example, located at the bottom of the chair 1 and suitable for supporting other components of the chair 1. The seat cushion 12 is, for example, connected to the top of the base 11 and suitable for supporting the hips of the human body. The back cushion 13 is, for example, connected to the base 11, adjacent to one side of the seat cushion 12, and suitable for supporting the back of the human body. The headrest 14 is, for example, connected to the top end of the back cushion 13 and is suitable for supporting the head of the human body. The structure of the chair 1 is not limited, and therefore the chair 1 may include only a base 11 and a seat cushion 12 in another embodiment not shown in the figure.
[0041] In this embodiment, the frame assembly 2 is, for example, applied to the back cushion 13. However, in a different embodiment, the frame assembly 2 may be applied to any one of the seat cushion 12, the back cushion 13, and the headrest 14 of the chair 1 or another component not illustrated such as the footrest. In an embodiment where armrests are designed differently from those in this embodiment, the frame assembly 2 may be also applied to the armrests
[0042] Specifically, as shown in FIGS. 2 to 4, the first frame 21 includes, for example, a first protruding rib 211 and a first groove 212. The direction at which the first protruding rib 211 faces is parallel to the direction at which the first opening 210 faces, and the first protruding rib 211 extends along, for example, the orientation direction of the first frame 21 to form an annular shape. The first groove 212 is, for example, on the back surface of the first protruding rib 211 and surrounds the entire first opening 210, and the first groove 212 has a wall surface 212a and a wall surface 212b parallel to each other. The wall surface 212a is close to the first opening 210 and the wall surface 212b is away from the second opening 220. The bottom of the first groove 212 forms a top 211a of the first protruding rib 211, making the cross-section of the first frame 21 U-shaped, but the cross-sectional shape of the first frame 21 is not limited thereto. The material of the first frame 21 is made of, for example, plastics, but this is not limited thereto.
[0043] As shown in FIGS. 2 to 4, in a narrow portion, the first frame 21 further includes, for example, two first flanges 213, multiple protruding portions 214, and multiple first perforations 215, but this construction is not limited thereto and can be arranged based on requirements. The two first flanges 213 are respectively located on left and right sides of the opening of the first groove 212. One of the first flanges 213 is connected to the wall surface 212a and adjoins the first opening 210, the other of the first flanges 213 is connected to the wall surface 212b and surrounds the outer peripheral edge of the first frame 21, but the specific design of the first flange 213 is not limited thereto. The first flange 213 is suitable for preventing the first frame 21 from deforming at the first groove 212 or the first opening 210 during the combination of the first flange 21 and the second frame 22.
[0044] The protruding portion 214 is located at the top 211a of the first protruding rib 211 and may be cylindrical with a length that, for example, corresponds to the wall thickness of the top 221a of the second frame 22, but its shape is not limited thereto. The direction of extension of the protruding portion 214 is, for example, parallel to the orientation direction of the first opening 210.
[0045] The first perforation 215 is located at the top 211a of the first protruding rib 211 and on a side of the protruding portion 214, and its shape is, for example, a rectangular hole, but is not limited thereto. The opening direction of the hole of the first perforation 215 is, for example, parallel to the orientation direction of the first opening 210.
[0046] As shown in FIGS. 2 to 4, the second frame 22 is similar in shape to the first frame 21 and the second opening 220 is, for example, the same size as the first opening 210. As shown in FIGS. 2 to 4, similar to the first frame 21 in shape, the second frame 22 in this embodiment includes, for example, a second protruding rib 221 and a second groove 222. The direction at which the second protruding rib 221 faces is parallel to the direction at which the second opening 220 faces, and the second protruding rib 221 extends along, for example, the orientation direction of the second frame 22 to form an annular shape. The second groove 222 is located, for example, on the back surface of the second protruding rib 221 and surrounds the entire second opening 220. The second groove 222 has a wall surface 222a and a wall surface 222b parallel to each other. The wall surface 222a is close to the second opening 220, and the wall surface 222b is away from the second opening 220. The bottom of the second groove 222 forms the top 221a of the second protruding rib 221, making the cross-section of the second frame 22 U-shaped, but the cross-sectional shape of the second frame 22 is not limited thereto. The material of the second frame 22 is made of, for example, plastics, but this is not limited thereto.
[0047] As shown in FIGS. 2 to 4, the second frame 22 includes two second flanges 223, multiple recesses 224, multiple second perforations 225, and two strengthened ribs 226. The two second flanges 223 are respectively located on the left and right sides of the opening of the second groove 222. One of the second flanges 223 is connected to the wall surface 222a and adjoins the second opening 220, the other of the second flanges 223 is connected to the wall surface 222b, and surrounds the outer peripheral edge of the second frame 22 and during combination, clamps the sheet 23 with the first flange 213, but the specific position and design of the second flange 223 are not limited thereto. In an embodiment not shown in the figure, the shape and design of the second flange 223 can be adjusted to change the position of the surface of the third region 233 of the sheet 23, making it tangent with the surface of the first frame 21. The second flange 223 is also suitable for preventing deformation at the second groove 222 or the second opening 220 during the combination of the second frame 22 and the first frame 21.
[0048] The recess 224 is located at the top of the second protruding rib 221 and corresponds to the protruding portion 214 of the first frame 21 in position. The shape of the recess 224 is, for example, a circular penetration hole to correspond to the shape of the protruding portion 214, but is not limited thereto. The depth of the recess 224 may be, for example, the length of the protruding portion 214, and the direction of extension of the recess 224 is, for example, parallel to an orientation direction of the second opening 220.
[0049] The second perforation 225 is located at the top 221a of the second protruding rib 221 and on a side of the recess 224, and its shape is, for example, a rectangular hole, but is not limited thereto. Thus, the shape of the second perforation 225 may be different from that of the first perforation 215. The position of the second perforation 225 may be, for example, a position corresponding to the first perforation 215, but is not limited thereto. The opening direction of the second perforation 225 is, for example, parallel to the orientation direction of the second opening 220.
[0050] The two strengthened ribs 226 are located at the top 221a of the second protruding rib 221 and are parallel to each other and at different side edges of the top 221a, extending in directions away from the second flange 223.
[0051] As shown in FIGS. 2 to 4, the two fixing portions 227 at the second frame 22 are respectively connected to, for example, the second flanges 223 (that is, the outer peripheral edge of the second frame 22) away from different opposite sides of the first opening 210. In this embodiment, the fixing portion 227 is formed by, for example, multiple protruding tabs spaced apart and protruding from the second flange 223, but is not limited thereto (see the embodiments of FIGS. 6 and 8 described later). The protruding tabs protrude from the second frame 22 in a direction away from the second opening 220, and each protruding tab is provided with multiple positioning posts 227a. The positioning posts 227a are suitable for piecing through the first region 231 of the sheet 23 during the combination of the second frame 22 and the sheet 23 to determine the position of the sheet 23 relative to the second frame 22. The positioning post 227a is not limited in direction, for example, facing the second side S2, but this is not limited thereto. The specific shape of the fixing portion 227 and the design of the fixing portion 227 fixing the sheet 23 are not limited thereto and can be arranged based on the required shape.
[0052] As shown in FIGS. 2 to 4, the shape of the sheet 23 may correspond to, for example, the shapes of the first frame 21 and the second frame 22, such that during combination, the three completely cover the first opening 210 and the second opening 220. In this embodiment, the sheet 23 is, for example, a stretchable, elastic net, but may be a film plate without holes in an embodiment not shown in the figure. The shape of the sheet 23 can be selected based on requirements. The first region 231, the second region 232, and the third region 233 of the sheet 23 are determined based on the relative position between the sheet 23 and the second frame 22 and the fixing portion 227 on the second frame 22 during the combination of the sheet 23, the first frame 21, and the second frame 22. Details are as follows.
[0053] Specifically, referring to FIG. 4, when the first frame 21, the second frame 22, and the sheet 23 are combined, for example, two ends (that is, parts of the first region 231) of the sheet 23 are fixed to the fixing portion 227 of the second frame 22, part of the sheet 23 covers the second groove 222, and the other part of the sheet 23 covers the second opening 220.
[0054] Next, the first frame 21 and the second frame 22 are stacked together along, for example, along an axis of a direction of the first opening 210 (and the second opening 220), and the first protruding rib 211 of the first frame 21 is buried in the second groove 222 of the second frame 22 (see FIG. 3). Because two ends of the sheet 23 are connected to two opposite fixing portions 227 at the outer peripheral edge of the second groove 222, during combination, part of the sheet 23 originally covering the second groove 222 is squeezed by the first frame 21 into the first groove 212 and stretched (this part is the second region 232). In addition, because part (the second region 232) of the sheet 23 covering the second groove 222 and part (the third region 233) of the sheet 23 covering the second opening 220 are provided with no other fixing members, when the second region 232 is stretched, the third region 233 located in the middle of the sheet 23 is also stretched indirectly over the second opening 220 (and the first opening 210). In the direction, because the first frame 21 and the second frame 22 in this embodiment are annular components, such that the second zone 232 is rendered as a ring, after stretched, they are not in a particular direction under the tensile force of the sheet 23, but this is not limited thereto.
[0055] It should be understood from the above description that in this embodiment, the sheet 23 may temporarily not be affixed to the second frame 22 (locally attached to the second frame 23 via the first zone 231) before the first frame 21 is combined with the second frame 22 and only affixed to the second frame 22 after the first frame 21 is combined with the second frame 22. This process may be done without manual operation or without the use of an adhesive, without this being a limitation.
[0056] As shown in FIG. 3, when the second region 232 of the sheet 23 in this embodiment is clamped between the first frame 21 and the second frame 22, part of the second region 232 is located on two sides of the first protruding rib 211 and covers the wall surface 211a and the wall surface 211b, and part of the second region 232 covers the top 211a of the first protruding rib 211 and is U-shaped. The part of the sheet 23 that covers the top 221a and the protruding portion 214 of the first protruding rib 211 enters along with the protruding portion 214 into the recess 224 on the first protruding rib 211 during the combination of the first frame 21 and the second frame 22. As shown in FIG. 3, in this embodiment, when the protruding portion 214 enters the recess 224, the protruding portion 214 does not pierce through the sheet 23. Therefore, the sheet 23 can be considered as being clamped and fixed together by the protruding portion 214 and the side wall surface of the recess 224. In an embodiment shown in FIG. 8, the protruding portion 214 can be changed to pierce through the sheet 23 to fix the sheet 23. After clamping between the first frame 21 and the second frame 22, the sheet 23 is mainly positioned based on the clamped second region 232, and therefore, after combination of the first frame 21 with the second frame 22, the sheet 23 damaged on the first region 231 does not affect part of the sheet 23 in the third region 233.
[0057] It can be understood from the foregoing description that the first region 231 of the sheet 23 can be considered part of the sheet 23 connected with the fixing portion 227 of the second frame 22. The second region 232 may be considered part of the sheet 23 contacted, squeezed to deform, stretched, and clamped by the wall surfaces (wall surface 212a, wall surface 212b, wall surface 222a, wall surface 222b, top 211a, and top 221a) of the first frame 21 and the second frame 22. The third region 233 may be considered part of the sheet 23 stretched jointly by the first frame 21 and the second frame 22 but not in contact with the first frame 21 and the second frame 22. Therefore, the detailed shapes of the first region 231, the second region 232, and the third region 233 of the sheet 23 can be determined based on the design of the first frame 21 and the second frame 22 and are not limited particularly. In other words, although the second region 232 is presented as a ring in the above embodiment, in the embodiment of the member in which the shape of either or both of the first frame 21 and the second frame 22 is changed to be U-shaped, the second region 232 on the sheet 23 may be presented as a U-shaped area or two elongate areas located on both sides, and so that the two second regions 232 on two side are positioned between the two first regions 231 on the two outermost sides.
[0058] Based on the design concept of the shapes of the first frame 21 and the second frame 22, because the sheet 23 only needs to be stretched during the combination of the first frame 21 and the second frame 22 and has sufficient tensile force in the third region 233, in an embodiment not shown in the figure, one of the first frame 21 and the second frame 22 can be simplified to be a U-shaped component instead of being a complete annular component as described above. In other words, in an embodiment, the first frame 21 includes, for example, two opposite protruding ribs (corresponding to the first protruding rib 211), the two protruding ribs are located on two opposite sides of the first opening 210, and the second frame 22 includes, for example, two opposite grooves (corresponding to the second groove 222). Each protruding rib is suitable to combine with one groove and press the second region 232 on the sheet 23 between the first frame 21 and the second frame 22. In addition, in another embodiment not shown in the figure, the first frame 21 can be designed as an inner frame clamped by the inner wall surface (the wall surface 222a) of the second opening 220 of the second frame 22 and thus the second frame 22 does not need a second groove 222.
[0059] As shown in FIG. 3, in this embodiment, the covering member 24 covers, for example, the entire first frame 21 and second frame 22, but does not cover the component in the third region 233 of the sheet 23. This is not limited thereto. In this embodiment, the covering member 24 covers, for example, an elastic portion 241 and a protective layer 242. The elastic portion 241 is, for example, a component covering the entire first frame 21 and second frame 22 (including the fixing portion 227), such as foam or another foamed material, but this is not limited thereto. The protective layer 242 is, for example, a layer covering the entire elastic portion 241, but the protective layer 242 may alternatively be a layer covering only part of the elastic portion 241. The material of the protective layer 242 is, for example, a rubber or another wear-resistant or weather-resistant material and can be arranged based on requirements.
[0060] When the frame assembly 2 in this embodiment is manufactured, the sheet 23 may be, for example, connected to the fixing portion 227 of the second frame 22, the assembly of the second frame 22 and the sheet 23 is combined with the first frame 21, and finally the three are placed in a chamber of a mold (not shown in the figure). A material of a covering member is injected into the chamber to form the covering member 24. The order in which the protective layer 242 and the elastic portion 241 are manufactured is not limited. For example, the protective layer 242 (or its material) may be arranged on a wall surface of the chamber of the mold, a component formed by the first frame 21, the second frame 22, and the sheet 23 is disposed in the mold, and a material (foamed material as described later) of the elastic portion 241 is injected into the chamber for manufacturing the frame assembly 2.
[0061] It can be known from the above that in the process of manufacturing the frame assembly 2 in this embodiment, because the sheet 23 can be connected to the second frame 22 and positioned via the fixing portion 227, when the first frame 21, the second frame 22, and the sheet 23 are combined, no additional fixing apparatus is required to fix the relative relationship between the second frame 22 and the sheet 23, and after the second frame 22 and the sheet 23 are combined temporarily, the first frame 21 and the second frame 22 are aligned and combined to fix the sheet 23. In addition, the covering member 24 covers the entire first frame 21 and second frame 22, which can prevent the first frame 21 from being separated from the second frame 22 when the frame assembly 2 is impacted.
[0062] As shown in FIGS. 2 and 5, in this embodiment, the first perforation 215 corresponds to the second perforation 225 in position, the sheet 23 is a net with holes, and the covering member 24 includes a foamed material (used to form the elastic portion 241). In this embodiment, part of the foamed material can run through the first perforation 215, the hole (not shown in the figure) in the sheet 23, and the second perforation 225 to be connected to the second side S2 from the first side S1 of the frame assembly 2. From one perspective, it can be considered that the covering member 24 rivets the first frame 21 and the second frame 22 at the junction of the first perforation 215 and the second perforation 225.
[0063] FIG. 6 is a schematic exploded view of a frame assembly according to another embodiment of the present invention. FIG. 7 is a schematic cross-sectional view of a frame assembly in FIG. 6 according to an embodiment. In FIG. 6, the shapes of the first frame 21 and the second frame 22 are complex, and the sheet 23 is eliminated. For the actual mounting position of the sheet 23, refer to FIG. 2 or 7. In FIG. 7, to facilitate the determination of the relationship between a notch 288, a fixing portion 227, and other components, during drawing, the positions of the fixing portion 227 and the notch 228 are offset.
[0064] Because the components are similar, the description of the same parts in FIGS. 6 and 7 as those in the foregoing embodiments is omitted below. As shown in FIGS. 6 and 7, referring to the description in FIG. 2, in this embodiment, the first frame 21 and the second frame 22 of the frame assembly 2 are bent to correspond to, for example, the curved shape of the chair back 13. In a direction (that is, the direction from the headrest 14 to the base 11 in FIG. 1) of the frame assembly 2 from the top to the bottom, for example, a first segment 1A and a second segment 1B are defined. The first segment 1A is connected to the base 11 via, for example, the second segment 1B. When a user sits in the chair (not shown in the figure), the first frame 21 has, for example, at least part of the first segment 1A to apply pressure to the second frame 22 in the force-applying direction F.
[0065] As shown in FIGS. 6 and 7, in this embodiment, the second frame 22 may not include, for example, the second flange 223, and the fixing portion 227 is formed by, for example, multiple protruding points that are directly arranged at the edge of the second frame 22, and the protruding points extend, for example, in a direction opposite to the force-applying direction F and face the first frame 21. The first frame 21 may not be provided with, for example, the first groove 212, and the edge of the first frame 21 is provided with a notch 228 corresponding to the position of the fixing portion 227.
[0066] As shown in FIGS. 6 and 7, in this embodiment, the protruding portion 214 may be, for example, arranged on the second frame 22 and located in the second groove 222, and the first frame 21 is provided with, for example, a perforation (as recess 224) corresponding to a position of the protruding portion 214. With such construction, as shown in FIG. 7, when the user applies an external force along the force-applying direction F, the first frame 21 is pressed towards the second frame 22 and the clamping between the first frame 21 and the second frame 22 and force for fixing the sheet 23 are strengthened.
[0067] In addition, it should be understood that the foregoing description of the manufacturing method of the frame assembly 2 is only an example. In an embodiment not shown in the figure, the second frame 22 may not include the fixing portion 227 arranged at the periphery. And, for example, the protruding portion 214 with the extension length of the second groove 222 greater than the depth of the second groove 222 is used instead to temporarily fix the sheet 23 (the protruding portion 214 in this state can be considered a fixing portion 227 in another state). Alternatively, in other embodiments, an alignment pin (not shown in the figure) can be set in the mold to pass through the perforation and the sheet and temporarily align the sheet with the second frame. The alignment pin can be removed after the first frame and the second frame are combined to clamp the sheet and before the covering member is manufactured. Specific reference can be made to the following embodiments.
[0068] FIG. 8 is a schematic view of a disassembly of the frame assembly according to another embodiment of the present invention. FIG. 9 is a schematic view of the second frame in the embodiment of FIG. 8. FIG. 10 is a partially enlarged schematic view of part A of the second frame in the embodiment of FIG. 8. FIG. 11 is a schematic view comparing the sheet in the embodiment of FIG. 8 with the embodiment of FIG. 6. In particular, to facilitate understanding of the shape of the covering member 34, the covering member 34, which wraps both the first frame 31 and the second frame 32 during assembly, is also drawn in FIG. 8, and the detailed location can be referred to FIG. 3 or FIG. 5 of the aforementioned embodiment. Referring to FIGS. 8 to 10, in the present embodiment, the shape of the first frame 31 and the second frame 32, for example, is generally similar to the first frame 21 and the second orbital 22 of the embodiment of FIG. 6, and have a first convex rib 311 and a second recess 322, respectively, as described below only with respect to the differences.
[0069] As shown in FIG. 8, in this embodiment, in addition to the first frame 31 and the second frame 32 having a first perforation 315 and a second perforation 325 similar to the first perforation 215 and the second perforation 225 of the embodiment of FIG. 6, the second frame 32 is provided with a plurality of fixing holes 321 penetrating through the second frame 32 for example, and these fixing holes 321 are suitable for fixing with the support member (not shown) connecting the seat cushion 12 to the back cushion 13 of the chair 1. These fixing holes 321 are suitable for fixing with a support member (not shown) between the seat cushion 12 and the back cushion 13 of the chair 1. The covering member 34 is formed with holes (not shown) corresponding to the positions of the fixing holes 321.
[0070] There is no limitation on the shape of the fixing portion of the present invention and the manner of fixing the sheet by the fixing portion. As shown in FIGS. 8 to 10, in the present embodiment, the fixing portion 327 is instead provided within the second recess 322 of the second frame 32. The fixing portion 327 is, for example, a bump provided in the second recess 322 and protruding in a direction toward the first frame 31.
[0071] As shown in FIG. 10, the fixing portion 327 of this embodiment is, for example, a trapezoidal bump projecting from the bottom surface of the second recess 322. The fixing portion 327 is for example connected to the bottom surface of the second recess 322. The top surface 3271 faces the first frame 31 and the area of the top surface 3271 is smaller than the area of the bottom surface. The beveled surfaces 3272 on both sides of the fixing portion 327 are arranged, for example, along the direction of extension of the second frame 32 (hereinafter referred to as the first direction D1). Referring to FIG. 10, the first direction D1 is a direction that extends along the extension direction of the second frame 32, so that the first direction D1 is in a different direction on different sides of the second frame 32. The other two sides of the fixing portion 327 in the second direction D2 perpendicular to the first direction D1 are directly connected to the inner wall surface of the second recess 322. The height of the fixing portion 327 is, for example, less than the depth of the second recess 322.
[0072] FIG. 12 is a partially enlarged schematic view of a portion B corresponding to portion A on the first frame in the embodiment of FIG. 8. Continuing as above, in this embodiment, the top surface 3271 is provided with, for example, a third perforation 327a running through the second frame 32 along the direction of the thickness of the second frame 32 (parallel to the direction toward the first frame 31). The third perforation 327a is adapted to be passed through by an alignment pin of the mold (not shown in the drawings). Correspondingly, as shown in FIG. 12, the first convex rib 311 of the first frame 31 is provided with a concave portion 316 at a position corresponding to the fixing portion 327, for example, and the shape of the concave portion 316 corresponds to the shape of the fixing portion 327, for example, and has inclined surfaces 3161 corresponding to the inclination angle of the beveled surfaces 3272 at the ends of the fixing portion 327.
[0073] As shown in FIG. 11, in the embodiment of FIG. 6, because the fixing portion 227 is located at the periphery of the second frame 22, the corresponding first regions 231 are located at the outer side of the sheet 23 and surround the second regions 232. However, in this embodiment, because the fixing portion 327 is instead disposed in the second groove 322, the first zones 331 on the corresponding sheets 333 are instead arranged such that each of the first regions 331 is surrounded by the second regions 332, and the first zones 332 are surrounded by the second zones 332. Similarly, in the embodiments not shown where the shape of either or both of the first frame 31 and the second frame 32 is changed to be a U-shaped member, the second zones 332 on the sheet body 33 may be presented as U-shaped zones or as two opposing elongated zones on either side, with each of the first regions 331 being surrounded by the second regions 332.
[0074] As shown in FIGS. 10 and 11, due to the change in the configuration of the fixing portion 327 and the position of the first zone 331 in this embodiment, the first region 331 of the sheet 33 corresponding to the position of the fixing portion 327 is subjected to stretching in the direction of the first direction D1 in addition to being stretched in the second direction D2 when the first frame 31 is combined with the second frame 32. In this embodiment, because the depth of the second recess 322 is made shallower by the fixing portion 327 (bump), the elongation amount of the sheet 33 in the first region 331 stretched in the second direction D2 is less than the elongation amount of the sheet 33 in the second region 332 stretched in the second direction D2.
[0075] As shown in FIGS. 8 to 12, in this embodiment, the recessed portion 316 is provided with a fourth perforation 316a, for example, at a position corresponding to the third perforation 327a. By this design, the second frame 32 can be positioned in the mold by the alignment pins being threaded through the third perforation 327a on the fixing portion 327 during manufacturing, and the relationship between the second frame 32 and the first frame 31 can be positioned by the alignment pins through the sheet 33 before the second frame 32 is combined with the first frame 31 by the third perforation 327a and the through-hole 331a on the sheet body 33 (see FIG. 11). The relationship between the second frame 32 and the sheet 33 can be positioned by means of the third perforation 327a and the through-hole 331a (see FIG. 11) in the sheet 33 before the second frame 32 is assembled with the first frame 31. The through-hole 331a may be a hole originally provided in the sheet body 33 or a hole created by piercing the alignment pin during combination. Next, the second frame 32, the first frame 31, and the sheet 33 are aligned by aligning the fourth perforation 316a with the alignment pin, which can be removed after the first frame 31 and the second frame 32 are combined and clamped to position the sheet body 33.
[0076] After removing the alignment pin, the holes formed by the third perforation 327a and the fourth perforation 316a together can be combined with other components to increase the strength of the connection between the first frame 31 and the second frame 32. Specifically, in this embodiment, the fourth perforation 316a is, for example, a tapering hole that tapers towards the second frame 32. The hole formed by the third perforation 327a and the fourth perforation 316a together is suitable for a screw (not shown) to be threaded. In this embodiment, because the fixing portion 327 is protruding in the direction of the first frame 31 and has a greater thickness, the contact area between the screw and the third perforation 327a can be larger, and secure fixing of the screw can be realized.
[0077] In the embodiment not shown in the figures, the holes formed by the third perforation 327a and the fourth perforation 316a together can be referred to the foregoing descriptions of the first perforation 215 and the second perforation 225 to allow the foam material subsequently used to form the resilient portion 241 to be penetrated, and the positions of the fixing portion 327 and the concave portion 316 can be interchanged.
[0078] Based on the description of the embodiments in FIGS. 2, 6, and 8 above, since the fixing and stretching of the sheet is mainly realized by clamping between the first frame and the second frame, the connection method and construction between the fixing portion and the first region of the sheet are not particularly limited. Therefore, in the embodiments not shown in the figures, the connection between the second frame and the sheet may be realized by applying hot melt adhesive to the fixing portion, but is not limited thereto.
[0079] In addition, referring to FIGS. 9 and 10, the convex portion 324 of this embodiment, for example, is also provided in the second recess 322 and is spaced apart from the wall of the fixing portion 327 and the second recess 322. The convex portion 324 is, for example, a plurality of needles arranged in a row, as shown in FIG. 12, and the recess 314 corresponding to the convex portion 324 is, for example, a single elongated groove that can accommodate these needles at the same time. The arrangement direction of the convex portion 324 is, for example, parallel to the first direction D1. The dimensions of the recess 314 correspond, for example, to the dimensions of the convex portion 324 and can accommodate the plurality of needles of the convex portion 324 at the same time. In this embodiment, the length of each needle is, for example, less than the depth of the second recess 322, so that the second frame 32 is preferentially positioned with the sheet 33 by the fixing portion 327 before being combined with the first frame 31, without being particularly limited.
[0080] The sheet 33 of this embodiment is also, for example, a net, and the diameter of each pin of the convex portion 324 is, for example, equal to the size of the mesh opening of the net, and the pin can be passed directly through the sheet 33 without stretching the sheet 33 when the first frame is combined with the second frame 32. It is understood that in embodiments not shown in the drawings, the convex portion 324 may be changed to a plurality of cones, and the elongated groove may be changed to a plurality of holes arranged in a row.
[0081] FIG. 13 is a schematic view of an enlarged backside of a portion B corresponding to portion A. Referring to FIG. 13, in this embodiment, the surfaces of the first frame 31 and the second frame 32 are provided with a plurality of grooves 30a, e.g., on the surface of the first frame 31 and the second frame 32 away from the sheet body 33 (for clarity of representation, only a portion of the grooves 30a on the first frame 31 is illustrated in FIG. 13). The extension direction of the groove 30a is, for example, inclined to the extension direction of the first frame 31 and the second frame 32 (please refer to the first direction D1). In the embodiment not shown in the drawings, the groove 30a may be extended along the first direction D1. In addition to increasing the surface area between the elastic portion (not shown, please refer to the position of the elastic portion 241 in the aforementioned embodiment) of the wrapping member 34 and the first frame 31 and the second frame 32 so that the covering member 34 is less prone to be separated from the first frame 31 and the second frame 32, the grooves 30a can increase the movement of the foam in the mold and on the surfaces of the first frame 31 and the second frame 32 when injecting the foamed material of the wrapping member 34 in the mold. The groove 30a can increase the speed of movement of the foamed material in the mold and on the surfaces of the first frame 31 and the second frame 32 when the foamed material is injected into the mold 34, so that the foamed material can more easily enter the first perforation 315 to the fourth perforation 316a.
[0082] As shown in FIG. 8, in this embodiment, the frame assembly 2 includes, for example, an first side S1 and a second side S2 opposite to each other. When the semi-finished product of the frame assembly 2 is set in a mold, the foamed material is, for example, injected into a mold cavity of the mold by a portion of the mold near the first side S1 to form the covering member 34.
[0083] As shown in FIGS. 8 and 9, in this embodiment, the second frame 32 is formed with a first notch 320a, for example, on the second side S2 of the second opening 320, and the first notch 320a is recessed along the second direction D2 in a direction away from the first side S1. A second notch 310a corresponding to the position and shape of the first notch 320a is also provided at a corresponding position on the first frame 31. The flow rate of the foamed material at the end of the cavity of the mold when injected into the mold can be increased to increase the production yield of the covering member 34.
[0084] As shown in FIG. 8, in this embodiment, different side portions of the covering member 34, for example, have different cross-sectional areas, but are not limited in this way. Specifically, the covering member 34, for example, has a larger cross-sectional area (thicker) on the first side S1 relative to the cross-sectional area of the other portions of the covering member 34 and a smaller cross-sectional area (thinner) on the second side S2 relative to the cross-sectional area of the other portions of the covering member 34, which may improve the production yield.
[0085] Based on the foregoing description, the present invention provides the chair and the frame assembly thereof. During assembly, the outermost first region of the sheet may be first fixed to the fixing portion on the second frame, and then the first frame and the second frame are combined with each other to press and bend the second region surrounded by the first region, such that the third region in the middle of the sheet is subjected to the tensile force from the second region to stretch, thus forming part of the frame assembly for providing support for the human body. The above structure enables automated production of parts by fixing the sheet to the fixing portion and then combining the first frame and the second frame to stretch the sheet at the same time, so that the shape of the stretched sheet is adapted to a complex curved shape. In addition, because the covering member is used to cover the first frame and the second frame that clamp the sheet on two sides, the covering member can not only serve as a buffer member for providing support for the human body but also cover the first frame and the second frame at the same time to avoid separation of the first frame from the second frame due to the force generated by the sheet, which increases the strength of the structure and maintains the tensile strength of the sheet.
[0086] While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.
