Chair

Abstract

The utility model discloses a chair which comprises two seat back supporting pipes, and each seat back supporting pipe comprises a back supporting part extending in the longitudinal direction and a seat supporting part extending in the transverse direction. A supporting fabric is arranged between the two seat back supporting pipes, insertion strips are arranged at the edge positions of the left end and the right end of the supporting fabric, and the thickness of the insertion strips is larger than that of the supporting fabric; the outer wall of the seat back supporting pipe is recessed inwards, caulking grooves matched with the caulking strips are formed in the back supporting part and the seat supporting part at the same time, and the caulking grooves are communicated with the outside along the caulking grooves through a through groove allowing the supporting fabric to penetrate through. The width of the caulking groove is greater than that of the through groove; the two insertion strips are respectively embedded into the two embedding grooves; the embedded structure is adopted between the seat back supporting pipe and the supporting fabric, so that the supporting fabric is stably connected with the seat back supporting pipe when the supporting fabric is tightened, the processes of pressing plate installation and repeated screw locking are omitted, the production cost of the seat is saved, and the assembly efficiency of the seat is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of seat, especially a chair. BACKGROUND

[0002] The chair is a common office appliance, which is suitable for most people working at a desk, and has the characteristics of light weight, comfortable sitting, simple and exquisite structure, etc. Figures 8-9 As shown in the figure, the structure of the existing chair is as follows: the chair comprises two L-shaped seat back support pipes 1, a support fabric 2 for sitting and leaning is arranged between the two seat back support pipes 1, a pressing plate 5 with the same extension path as the seat back support pipe 1 is arranged on the seat back support pipe 1, and a plurality of spaced screw holes 15 are arranged on the seat back support pipe 1, a plurality of through holes 51 corresponding to the screw holes 15 are arranged on the left and right side edges of the support fabric 2 and the pressing plate 5.

[0003] When assembling the chair, the two ends of the support fabric 2 are arranged between the corresponding seat back support pipe 1 and the pressing plate 5, then the screw is passed through the through hole 51 and locked into the screw hole 15, so that the pressing plate 5 fixes the left and right ends of the support fabric 2 on the corresponding seat back support pipe 1, the support fabric 2 is turned up to the inside of the seat back support pipe 1 and covers the pressing plate 5, so that the appearance of the chair is kept beautiful, then the two seat back support pipes 1 are pulled tight in opposite directions by the auxiliary equipment, so that the support fabric 2 is in a taut state, which is convenient for sitting; but this chair has some disadvantages.

[0004] When fixing the support fabric between the seat back support pipe and the pressing plate, the hole alignment and screw locking process need to be frequently performed, which results in low assembly efficiency of the chair.

[0005] When fixing the support fabric on the support pipe, the pressing plate needs to be relied on, and the production cost of the chair is increased when the chair is mass-produced. SUMMARY

[0006] The utility model provides a chair, adopt the inlay structure between the seat back support pipe and the support fabric, make the support fabric connect stably with the seat back support pipe when taut, save the pressing plate installation and repeatedly lock screw process, save the production cost of the seat, improve the assembly efficiency of the seat.

[0007] The technical scheme of the utility model is as follows:

[0008] A chair comprises two seat-back support tubes, each of which comprises a back support part extending longitudinally and a seat support part extending laterally; a support fabric is arranged between the two seat-back support tubes; the edges of the left and right ends of the support fabric are each provided with a batten, the thickness of the batten being greater than that of the support fabric; the outer wall of the seat-back support tube is concave inwardly and simultaneously forms a batten slot matching the batten on the back support part and the seat support part, the batten slot is communicated with the outside through a through slot allowing the support fabric to pass through; the width of the batten slot is greater than that of the through slot; and the two battens are respectively embedded in the two batten slots.

[0009] The two seat-back support tubes are moved in opposite directions to a position and make the support fabric taut, so as to form taut seat support surfaces and back support surfaces between the two seat support parts and the two back support parts respectively.

[0010] Preferably, the two ends of the batten slot extend to the two end tube opening positions of the seat-back support tube and open outwardly, so that the batten can be slidably connected into the batten slot from the tube opening of the seat-back support tube; further improving the assembly efficiency of the chair.

[0011] Preferably, a sealing end cover is connected to the two end tube openings of the seat-back support tube; the sealing end cover can shield the traces of the cooperation between the batten and the batten slot at the tube opening, so that the chair looks simple and beautiful in appearance.

[0012] Preferably, the batten is integrally formed with the support fabric.

[0013] Preferably, the edges of the left and right sides of the support fabric are folded inwardly and fixed to the inner side of the support fabric, thereby forming a receiving groove in which the batten is arranged.

[0014] Preferably, a cross bar is fixedly connected between the two seat-back support tubes to continuously tighten the support fabric; the cross bar can simultaneously reinforce the two seat-back support tubes and force the support fabric to be always in a tension state, thereby ensuring the sitting support feeling.

[0015] Preferably, the cross bar is arranged between the two seat support parts or between the two back support parts.

[0016] Preferably, the end portions of the cross bar are connected to the inner side positions of the corresponding seat-back support tubes; the connection traces of the cross bar and the seat-back support tubes are avoided from being exposed, thereby ensuring the simple appearance of the chair.

[0017] Preferably, the inner side position of the seat-back support tube is provided with a threaded hole, each end portion of the cross bar is provided with a mounting plate, the mounting plate is provided with an avoiding hole corresponding to the position of the threaded hole, and a screw passes through the avoiding hole and is screwed into the threaded hole to fix the cross bar between the two seat-back support tubes.

[0018] Preferably, the support fabric is an elastic mesh fabric; the elastic mesh fabric is more breathable and ventilated while providing an elastic sitting feeling, further improving the sitting experience of the chair.

[0019] The chair has the advantages that:

[0020] Compared with the structure connected by a pressing plate and a screw, the two seat back support pipes are connected with the support fabric by the embedding mode, so that the support fabric is stably connected with the seat back support pipe when being tightened, the manufacturing cost of the chair is reduced, and the assembly efficiency of the chair during mass assembly is improved.

[0021] The two ends of the embedding groove are outwardly open at the pipe opening position of the seat back support pipe, so that the support fabric can be directly slid into the embedding groove from the pipe opening of the seat back support pipe during assembly, further improving the assembly efficiency of the chair.

[0022] The cross rod between the two seat back support pipes can ensure that the support fabric is always in a tightened state, thereby providing a comfortable riding feeling for the sitter, and the end of the cross rod is fixedly connected to the inner side of the corresponding seat back support rod by a screw, hiding the connection trace of the cross rod and the seat back support rod pipe in appearance, and optimizing the appearance of the chair.

[0023] The pipe opening of the seat back support pipe is connected with a sealing end cover, the sealing end cover can seal the seat back support pipe to prevent sundries from entering the seat back support pipe, and also can shield the embedding strip, so that the chair looks more simple and generous in appearance. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A structure diagram for tightening the support fabric on the chair;

[0025] Figure 2 An enlarged view of the pipe opening position of the seat back support pipe;

[0026] Figure 3 An exploded view of the chair with the support fabric hidden;

[0027] Figure 4 An enlarged view of the cross rod connected to the inner side of the seat back support pipe;

[0028] Figure 5 A transverse sectional view of the chair;

[0029] Figure 6 A sectional view of the embedding groove and the through groove formed on the seat back support pipe;

[0030] Figure 7 A sectional view of the embedding strip connected to the support fabric;

[0031] Figure 8This is an enlarged view of the seat back support tube and the support fabric in the background art;

[0032] Figure 9 This is a cross-sectional view of the backrest support tube and the support fabric in the background art.

[0033] The reference numerals in the attached drawings are as follows: 1-back support tube, 2-support fabric, 3-sealing end cap, 4-crossbar, 5-pressure plate, 11-back support part, 12-seat support part, 13-groove, 13a-through groove, 14-threaded hole, 15-screw hole, 21-back support surface, 22-seat support surface, 23-insertion strip, 41-mounting plate, 42-avoidance hole, 51-through hole. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] This utility model has multiple embodiments, and the specific implementation methods are as follows:

[0037] Example 1: As Figures 1-7 As shown, this embodiment provides a chair, including two seat-back support tubes 1. Each seat-back support tube 1 includes a back support portion 11 extending longitudinally and a seat support portion 12 extending laterally. The cross-sectional shape of the seat-back support tube 1 can be circular, elliptical, rectangular, or irregular. A support fabric 2 is provided between the two seat-back support tubes 1. In this embodiment, the support fabric 2 is an elastic mesh fabric. The elastic mesh fabric provides a flexible seating feel while being more breathable and ventilated, further enhancing the seating experience of the chair. The edges of both ends of the support fabric 2 are provided with inlays. Strip 23, the thickness of strip 23 is greater than the thickness of supporting fabric 2; the outer wall of seat back support tube 1 is recessed inward, and grooves 13 matching strip 23 are formed on back support part 11 and seat support part 12. The grooves 13 are connected to the outside through a through groove 13a that allows supporting fabric 2 to pass through; the seat back support tube 1 extends in an L-shape, and the extension direction of grooves 13 and through grooves 13a is the same as the extension direction of seat back support tube 1; the width of groove 13 is greater than the width of through groove 13a; and the two strips 23 are respectively embedded in the two grooves 13.

[0038] Two seat back support tubes 1 are moved in opposite directions to be in place and make the support fabric 2 taut, so that the taut seat support surface 22 and back support surface 21 are formed between the two seat support parts 12 and the two back support parts 11 respectively; when the support fabric 2 is taut, since the width of the through groove 13a is smaller than the width of the embedding groove 13, the embedding strip 23 will not come out of the embedding groove 23, compared with the assembly structure of the prior art in which the pressing plate 5 is used for pressing and multiple screws are locked, the embedding structure in the embodiment is simpler to operate and has higher assembly efficiency when a large number of seats are assembled.

[0039] Further, as shown in Figure 6 the embedding groove 13 and the through groove 13a can be formed in various ways, for example, one of the forming ways is to rely on a special mold for processing, specifically, a core rod mold having the same cross-sectional shape as the embedding groove 13 and the through groove 13a is first inserted into the seat back support tube 1, and then a U-shaped groove is pressed out of the outer surface of the seat back support tube 1, and then the U-shaped groove is expanded inside to form the embedding groove 13 and the through groove 13a, which belongs to a conventional technology and will not be described here.

[0040] Further, compared with directly embedding the embedding strip 23 into the embedding groove, the sliding connection mode in the embodiment is more efficient, specifically, the two ends of the embedding groove 13 extend to the two end port positions of the seat back support tube 1 and are open outward, so that the embedding strip 23 can be slidingly connected into the embedding groove 13 from the port of the seat back support tube 1; when slidingly connected, the support fabric 2 at the joint with the embedding strip 23 is also slidingly connected in the through groove 13a, thereby further improving the assembly efficiency of the chair.

[0041] Further, as shown in Figure 2 To prevent sundries from entering the seat back support tube 1, a sealing end cover 3 is connected to the two end ports of the seat back support tube 1; the sealing end cover 3 can block the port of the seat back support tube 1 and also block the trace of the cooperation between the embedding strip 23 and the embedding groove 13 at the port, so that the chair looks simple and beautiful in appearance and is designed ingeniously, achieving two purposes at once.

[0042] Further, as shown in Figure 7 the connection structure of the embedding strip 2 and the support fabric 2 in the embodiment is as follows: the edges of the left and right sides of the support fabric 2 are folded inward and fixed to the inside of the support fabric 2, thereby forming a receiving groove 24, and the embedding strip 23 is arranged in the receiving groove 24, and the embedding strip 23 arranged in the receiving groove 24 can be a flexible rubber strip or a plastic strip.

[0043] Further, in order to ensure that the support fabric 2 is always in a taut state between the two seat-back support tubes 1, a crossbar 4 is fixedly connected between the two seat-back support tubes 1 to continuously tighten the support fabric 2; the crossbar 4 can simultaneously reinforce the two seat-back support tubes 1 and force the support fabric 3 to be always in a taut state, thereby ensuring the sitting support feeling; in the embodiment, the crossbar 4 is arranged between the two seat support portions 12 or between the two back support portions 11, thereby ensuring the structural strength of the chair and the taut support feeling of the support fabric 2.

[0044] Further, in the embodiment, the crossbar 4 is arranged between the two seat support portions 12 and between the two back support portions 11, a plurality of crossbars 4 are arranged between the two seat support portions 12, and a connecting seat is formed between the plurality of crossbars 4, which facilitates the connection with the chair base, and the chair has the functions of lifting adjustment or forward and backward tilting.

[0045] Further, in order to ensure that the appearance of the chair is simple and beautiful, the end of the crossbar 4 is connected to the inner side of the corresponding seat-back support tube 1, and the specific connection structure is as follows: as shown in Figure 4 the inner side of the seat-back support tube 1 is provided with a threaded hole 14, each end of the crossbar 4 is provided with a mounting plate 41, the mounting plate 41 is provided with an avoiding hole 42 corresponding to the position of the threaded hole 14, a screw passes through the avoiding hole 42 and is screwed into the threaded hole 14, and the crossbar 4 is fixed between the two seat-back support tubes 1; since the connection position of the screw is located at the inner side of the seat-back support tube 1, it is usually difficult to be seen, thereby avoiding that the connection trace of the crossbar 4 and the seat-back support tube 1 is exposed.

[0046] Embodiment 2: The difference between the embodiment and the above-mentioned embodiments is that the fillet 23 in the embodiment is integrally formed with the support fabric 2; specifically, the support fabric 2 in the embodiment can be integrally connected with the fillet 23 made of flexible rubber or plastic at the corresponding edge position of the support fabric 2 through a heat forming process during manufacturing, so that the fillet 23 will not fall off from the support fabric 2 when the support fabric 2 is taut, thereby achieving the same connection effect as the above-mentioned embodiments.

[0047] The above describes the utility model and its embodiments in a schematic manner, and the description is not restrictive, and the embodiment shown in the drawings is only one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are designed without creativity, which should all belong to the protection scope of the utility model.

Claims

1. A chair, characterized in that The seat and back support pipe (1) comprises a back support part (11) extending longitudinally, and a seat support part (12) extending transversely; a support fabric (2) is arranged between the two seat and back support pipes (1), the edges of the left and right ends of the support fabric (2) are provided with a batten (23), the thickness of the batten (23) is greater than that of the support fabric (2); the outer wall of the seat and back support pipe (1) is concave inward, and a matching batten groove (13) is formed on the back support part (11) and the seat support part (12), the batten groove (13) is communicated with the outside through a through groove (13a) allowing the support fabric (2) to pass through; the width of the batten groove (13) is greater than that of the through groove (13a); and the two battens (23) are respectively embedded in the two batten grooves (13). The two seat and back support pipes (1) are moved in opposite directions to a position and make the support fabric (2) taut, so as to form a taut seat support surface (22) and a taut back support surface (21) between the two seat support parts (12) and the two back support parts (11) respectively.

2. A chair according to claim 1, characterized in that: The two ends of the batten groove (13) extend to the two end pipe opening positions of the seat and back support pipe (1) and are open outward, so that the batten (23) can be slidably connected into the batten groove (13) from the pipe opening of the seat and back support pipe (1).

3. A chair according to claim 2, wherein: The two end pipe openings of the seat and back support pipe (1) are connected with a sealing end cover (3).

4. A chair according to claim 1, wherein: The batten (23) is integrally formed with the support fabric (2).

5. A chair according to claim 1, characterized in that: The edges of the left and right sides of the support fabric (2) are folded inward and fixed on the inner side of the support fabric (2), thereby forming a receiving groove (24), and the batten (23) is arranged in the receiving groove (24).

6. A chair according to claim 1, wherein: The two seat and back support pipes (1) are fixedly connected with a cross rod (4) for continuously tautening the support fabric (2).

7. A chair according to claim 6, wherein: The cross rod (4) is arranged between the two seat support parts (12), or the cross rod (4) is arranged between the two back support parts (11).

8. A chair according to claim 6, wherein: The end of the cross rod (4) is connected to the inner side of the corresponding seat and back support pipe (1).

9. A chair according to claim 8, wherein: The inner side of the seat and back support pipe (1) is provided with a threaded hole (14), each end of the cross rod (4) is provided with a mounting plate (41), the mounting plate (41) is provided with an avoiding hole (42) corresponding to the position of the threaded hole (14), a screw passes through the avoiding hole (42) and is screwed into the threaded hole (14), thereby fixing the cross rod (4) between the two seat and back support pipes (1).

10. A chair according to claim 1, characterized in that: The support fabric (2) is a mesh fabric with elasticity.

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