CN210018583U

CN210018583U - Chair back

Info

Publication number: CN210018583U
Application number: CN201920335625.1U
Authority: CN
Inventors: 苏致诚
Original assignee: DONGGUAN HOWEN PLASTIC& METAL PRODUCTS Co Ltd
Current assignee: DONGGUAN HOWEN PLASTIC& METAL PRODUCTS Co Ltd
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2020-02-07
Anticipated expiration: 2029-03-14

Abstract

A seat backrest comprises an inner frame, an outer frame, a plurality of edge strips and a mesh, wherein the edge strips are fixed on the edge part of the mesh in a sewing manner, a plurality of clamping protrusions are arranged on the outer frame in a protruding manner, conical barbs are arranged at the end parts of the clamping protrusions, a limiting piece is arranged on the inner frame, mounting holes which penetrate through the inner frame in the front and back direction are further formed in each frame edge of the inner frame, a plurality of stopping pieces are arranged in each mounting hole, limiting sections of the stopping pieces surround a through hole, and the hole diameter of the through hole is gradually reduced; the strake card is between the protruding and the frame of the card of inside casing to end the position piece and block between protruding mutual fixation spacing, thereby accomplish the installation fixed, the barb one-time forming on the frame, with the cooperation of ending the position piece on the inside casing, need not to adopt extra part installation, whole installation is simple, effectively simplifies the installation procedure, improves the installation effectiveness, and the practicality is strong, has stronger popularization meaning.

Description

Chair back

Technical Field

The utility model relates to a seat subassembly especially relates to a backrest.

Background

The back is a subassembly of seat, and is light in order to use, adopts the form of back with the back usually, adopts the back of the form of screen cloth to the back, and the tradition mode is fixed in the back inside casing with the mode of nailing with the screen cloth on, and the back locks the solid with the back frame again with the screw, or fixes with the back-off form, and the whole assembly is troublesome, reduces production efficiency, to later stage user in the use, when needing to change the screen cloth, has the inconvenient problem of dismouting equally.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a seat back that addresses the deficiencies in the prior art.

A seat backrest comprises an inner frame, an outer frame, a plurality of edge strips and a mesh fabric, wherein the edge strip sewing machine is fixed at the edge part of the mesh fabric, the inner frame and the outer frame are installed in a matched mode, the edge strips and the edge part of the mesh fabric are clamped between the outer frame and the inner frame, a plurality of clamping protrusions are arranged on the outer frame in a protruding mode, end portions of the clamping protrusions are provided with conical barbs, limiting pieces are arranged on the inner frame, mounting holes which penetrate through the inner frame in the front and back direction are further formed in the edge of each frame edge of the inner frame, a plurality of stopping pieces are arranged in holes of the mounting holes and comprise limiting sections, the limiting sections of different stopping pieces surround a through hole, and the hole diameter of the through hole;

during assembly, the edge strips of the sewing machine on the mesh cloth are directly clamped on the limiting pieces of the inner frame, the inner frame is directly buckled on the outer frame, the barbs clamped on the protrusions on the outer frame extrude the limiting pieces and penetrate through the through holes, and after the barbs penetrate through the through holes, the limiting sections of the limiting pieces shrink to return and are in buckling limit with the barbs, so that the edge strips are clamped between the limiting pieces of the inner frame and the outer frame.

Furthermore, the stop pieces in the holes of the mounting holes are distributed at intervals, and a gap is formed between every two adjacent stop pieces.

Furthermore, the limiting sheet is arranged in an L shape, one end of the limiting sheet is connected to the back face of the inner frame, and a limiting space with an outward opening is formed.

Furthermore, the whole inner frame is arranged in a shape like a Chinese character 'kou', the outer side surface of the inner frame facing the outer frame is the back surface, and the limiting pieces are arranged on the back surface of the inner frame.

Furthermore, the outer frame comprises a main body part, the main body part comprises a plurality of frame edges, and the side faces, facing the inner frame, of the frame edges of the main body part are provided with accommodating grooves distributed along the shape of the main body part

Furthermore, the inner frame is clamped in the accommodating groove of the outer frame, and the clamping protrusion is arranged at the groove bottom of the accommodating groove.

Furthermore, the frame edges of the main body part are distributed in a shape like a Chinese character 'kou'.

Furthermore, the stop piece further comprises a connecting section, and two ends of the connecting section are respectively connected with the hole wall of the mounting hole and the limiting section.

The beneficial effects of the utility model reside in that: fix on the screen cloth through the form with the strake adoption sewing machine to set up spacing piece and card protruding on inside casing, frame respectively, during the equipment, the strake card is between the protruding and the frame of the card of inside casing, and, end the position piece and block between protruding mutual fixation spacing, thereby accomplish the installation fixed, the one-time shaping of overhead kick is on the frame, with the cooperation of ending the position piece on the inside casing, need not to adopt extra part installation, and whole installation is simple, effectively simplifies the installation procedure, improves the installation effectiveness, and the practicality is strong, has stronger popularization meaning.

Drawings

Fig. 1 is a schematic structural view of a seat back of the utility model.

Fig. 2 is an exploded view of the seat back shown in fig. 1.

Figure 3 is a further exploded view of the seat back shown in figure 2.

Figure 4 is a cross-sectional view of the seat back of figure 1 taken along line a-a.

Figure 5 is an exploded view of the seat back of figure 2 at another angle.

Fig. 6 is an enlarged view of a portion a in fig. 5.

Fig. 7 is an enlarged view of a portion B in fig. 3.

Fig. 8 is an enlarged view of a portion C in fig. 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

As shown in fig. 1 to 8, the utility model provides a seat back, it includes inside casing 20, frame 10, a plurality of strake 40, screen cloth 30 and backplate 50, screen cloth 30 is the square setting, strake 40 sewing machine fixes at the marginal portion of screen cloth 30, inside casing 20 and frame 10 cooperation installation, the marginal portion clamp of strake 40 and screen cloth 30 is located between frame 10 and the inside casing 20.

Frame 10 includes a main part 11 and connects fixed disk 12 on main part 11, main part 11 includes a plurality of borders, the whole frame of main part 11 is "mouth" word and distributes, fixed disk 12 is connected in the frame edge that leans on the bottom position, backplate 50 is installed on the back of fixed disk 12, the frame of main part 11 is equipped with along the accepting groove 13 of main part 11 appearance distribution towards the side of inside casing 20, the protruding a plurality of blocks of 14 that are equipped with of tank bottom of accepting groove 13, the protruding 14 of block distributes on a plurality of frames, protruding 14 of block is whole to be column, hollow setting, the tip position that the accepting groove 13 tank bottom was kept away from to protruding 14 of block is equipped with the overhead kick 15 of toper form.

The whole inner frame 20 is also arranged in a shape like a Chinese character 'kou', the outer side surface of the inner frame 20 facing the outer frame 10 is the back surface, the back surface of the inner frame 20 is provided with a limiting piece 21, the limiting piece 21 is arranged in an 'L' shape, and one end of the limiting piece 21 is connected to the back surface of the inner frame 20, so that a limiting space with an outward opening is formed. Each frame edge of the inner frame 20 is further provided with a front-back through mounting hole, a plurality of stop pieces 22 are arranged in each mounting hole, the stop pieces 22 are distributed at intervals, a gap is formed between every two adjacent stop pieces 22, each stop piece 22 comprises a connecting section 23 and a limiting section 24, two ends of each connecting section 23 are respectively connected with the wall of the mounting hole and the corresponding limiting section 24, the limiting sections 24 of different stop pieces surround to form a through hole 25, and the aperture of each through hole 25 gradually shrinks towards the opposite direction of the back of the inner frame 20.

During assembly, the cut mesh cloth 30 is fixedly connected with the edge strips 40 at the periphery respectively in a sewing mode, the mesh cloth 30 with the edge strips 40 sewn through is covered on the inner frame 20 from the front side, the edge strips 40 are directly clamped on the limiting pieces 21 on the back side of the inner frame 20, the inner frame 20 is arranged on the outer frame 10, the inner frame 20 is clamped in the accommodating grooves 13 of the outer frame 10, the barbs 15 protruding from the outer frame 10 extrude the limiting pieces 21 and penetrate through the through holes 25, after the barbs 15 penetrate through the through holes 25, the limiting sections 24 of the limiting pieces 21 shrink back and are buckled with the barbs 15 for limiting, and therefore the edge strips 40 are clamped between the limiting pieces 21 of the inner frame 20 and the outer frame 10.

The beneficial effects of the utility model reside in that: fix on screen cloth 30 through the form with strake 40 adoption sewing machine to set up spacing piece 21 and the protruding 14 of card on inside casing 20, frame 10 respectively, during the equipment, strake 40 card is between inside casing 20 and frame 10, and, it is spacing to end a position piece 22 and block mutual fixation between the protruding 14, thereby it is fixed to accomplish the installation, barb 15 one-time forming is on frame 10, with the cooperation of ending a position piece 22 on the inside casing 20, need not to adopt extra part installation, and whole installation is simple, effectively simplifies the installation step, improves the installation effectiveness, and the practicality is strong, has stronger popularization meaning.

The above-described embodiments only represent one embodiment of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the spirit of the invention, and these are within the scope of the invention. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A seat backrest is characterized by comprising an inner frame, an outer frame, a plurality of edge strips and mesh cloth, wherein the edge strip sewing machine is used for fixing the edge part of the mesh cloth, the inner frame and the outer frame are installed in a matched mode, the edge strips and the edge part of the mesh cloth are clamped between the outer frame and the inner frame, a plurality of clamping protrusions are arranged on the outer frame in a protruding mode, end portions of the clamping protrusions are provided with conical barbs, limiting pieces are arranged on the inner frame, mounting holes which penetrate through the inner frame in the front and back are further formed in the edge of each frame of the inner frame, a plurality of stop pieces are arranged in holes of each mounting hole and comprise limiting sections, the limiting sections of different stop pieces surround a through hole, and the hole diameter of the through hole is gradually;

2. The seat back of claim 1, wherein: the stop pieces in the holes of the mounting holes are distributed at intervals, and a gap is formed between every two adjacent stop pieces.

3. The seat back of claim 1, wherein: the limiting sheet is arranged in an L shape, one end of the limiting sheet is connected to the back face of the inner frame, and therefore a limiting space with an outward opening is formed.

4. The seat back of claim 3, wherein: the whole inner frame is arranged in a shape like a Chinese character 'kou', the outer side surface of the inner frame facing the outer frame is a back surface, and the limiting pieces are arranged on the back surface of the inner frame.

5. The seat back of claim 1, wherein: the outer frame comprises a main body part, the main body part comprises a plurality of frame edges, and the side faces, facing the inner frame, of the frame edges of the main body part are provided with accommodating grooves distributed along the shape of the main body part.

6. The seat back of claim 5, wherein: the inside casing card is in the accepting groove of frame, the tank bottom of accepting groove is located to the card arch.

7. The seat back of claim 5, wherein: the frame edges of the main body part are integrally distributed in a shape like a Chinese character 'kou'.

8. The seat back of claim 1, wherein: the stop piece further comprises a connecting section, and the two ends of the connecting section are respectively connected with the hole wall of the mounting hole and the limiting section.