CN216602288U

CN216602288U - Chair backrest fixing structure

Info

Publication number: CN216602288U
Application number: CN202121360176.XU
Authority: CN
Inventors: 李阔
Original assignee: Zhejiang Xier Technology Co Ltd
Current assignee: Zhejiang Xier Technology Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-05-27
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a chair backrest fixing structure, which comprises a backrest part and a supporting frame formed by symmetrically arranging three supporting rods, wherein the backrest part comprises a backrest plate and a connecting piece, and the upper end and the lower end of the connecting piece are respectively detachably connected with the backrest plate and the upper ends of the supporting rods; the lower end of the connecting piece is provided with a nut, a through hole is formed in the inner side face, facing the center of the supporting frame, of the supporting rod, and a screw penetrates through the through hole and is fastened with the nut. The connecting piece is used for connecting the back board and the supporting frame in a hidden way, and the whole support leg is fixed by adopting a plug-in mode, so that the mounting is simple, the detachment is convenient, and the use is firm and reliable.

Description

Chair backrest fixing structure

Technical Field

The utility model belongs to the technical field of children products, and particularly relates to a chair backrest fixing structure.

Background

In daily life, various chairs, especially dining chairs for children, are mostly made of plastic materials, and the overall structure is mostly composed of a chair seat and two support parts symmetrically arranged on two sides of the whole seat. The seat and backrest part comprises a cushion part and a backrest part, the backrest part and other parts of the chair are connected by mostly directly arranging through holes, and the backrest part and other parts of the chair are fixedly connected by adopting a plurality of screws. According to the connecting mode, the through holes and the screws are mostly arranged on the outer surface and are visible visually, so that the overall appearance is not simple, in addition, the installation process of a plurality of parts through the screws is complicated, the installation process is complex, the back part has multiple processes in the workshop production process, the demolding is difficult, and the like.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a chair backrest fixing structure which is simpler to mount, is stable to support by a child after being assembled and is safe to use.

In order to achieve the purpose, the utility model adopts the following technical scheme: a chair backrest fixing structure comprises a backrest part and a supporting frame formed by symmetrically arranging three supporting rods, wherein the backrest part comprises a backrest plate and a connecting piece, and the upper end and the lower end of the connecting piece are detachably connected with the backrest plate and the upper ends of the supporting rods respectively; the lower end of the connecting piece is provided with a nut, a through hole is formed in the inner side face, facing the center of the supporting frame, of the supporting rod, and a screw penetrates through the through hole and is fastened with the nut.

Furthermore, the lower end of the connecting piece is provided with a groove, and the nut is embedded in the groove.

Furthermore, the outer side surface of the back board is provided with a convex block, the bottom surface of the convex block is provided with a slot, and the upper end of the connecting piece is inserted into the slot.

Furthermore, a boss is arranged at the upper end of the connecting piece, and an assembly hole is formed in the boss; after the upper end of the connecting piece is inserted into the slot, the pin sequentially penetrates through the assembling hole and the pin hole in the bottom surface of the bump.

Furthermore, two fins are symmetrically arranged on the periphery of the end part of the upper end of the connecting piece above the boss.

Furthermore, the connecting piece is of a rod-shaped structure, the upper end face of the supporting rod is provided with a blind hole, and the lower end of the boss is embedded into the blind hole.

Furthermore, the support rod comprises a support rod and a necking section arranged at the upper end of the support rod, and the necking section is provided with the blind hole.

Furthermore, the convex block of the back board is assembled with the support rod through a connecting piece, and the upper surface of the support rod connected with the necking section is contacted with the lower surface of the convex block.

By adopting the technical scheme of the utility model, the utility model has the beneficial effects that: utilize hidden connection back board of connecting piece and braced frame, whole stabilizer blade is fixed to adopt the mode of pegging graft to realize, therefore the installation is simple, and the split is convenient, also firm reliable in the use, and the screw locates the inboard, invisible in the periphery sight range for braced frame is more succinct generous in the whole appearance of back board.

Drawings

FIG. 1 is a schematic view of a leg fixing structure of a chair;

FIG. 2 is a schematic view of the structure of one state of FIG. 1;

FIG. 3 is a schematic illustration of the disassembled state of FIG. 1;

FIG. 4 is a side schematic view of a partial structure;

FIG. 5 is a cross-sectional view of FIG. 5;

FIG. 6 is a disassembled state view of the legs and the leg connecting member;

fig. 7 is a schematic view of the structure of the connector.

In the figure: 1 backboard, 11 lug, 12 slot, 2 support rod, 21 blind hole, 22 support rod, 221 upper surface, 23 necking section, 3 connecting piece, 31 groove, 32 boss, 321 assembly hole, 33 end, 34 wing, 4 nut, 5 screw, 6 pin and 7 seat board.

Detailed Description

The technical scheme of the utility model is further described and illustrated by specific embodiments below, so that the utility model is clearer and more obvious. Other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

As shown in fig. 1 to 7, the present embodiment relates to a chair backrest fixing structure, which includes a backrest portion and a supporting frame formed by symmetrically arranging three supporting rods 2, wherein the backrest portion includes a backrest plate 1 and a connecting member 3, and the upper end and the lower end of the connecting member 3 are detachably connected to the backrest plate 1 and the upper end of the supporting rod 2 respectively; the lower end of the connecting piece 3 is provided with a nut 4, the inner side surface of the support rod facing the center of the support frame is provided with a through hole, and a screw penetrates through the through hole and is fastened with the nut 4.

In a specific embodiment, the lower end (specifically, the outer side) of the connecting member 3 is provided with a groove 31, the nut 4 is embedded in the groove 31, and a through hole for passing a screw is formed towards the inner side of the cushion 7.

In a specific embodiment, the outer side of the backboard 1 is provided with a projection 11, the bottom surface of the projection 11 is provided with a slot 12, and the upper end of the connecting piece 3 is inserted into the slot 12.

In a specific embodiment, a boss 32 is provided at the upper end of the connecting member 3, and a fitting hole 321 is provided on the boss; after the upper end of the connecting piece is inserted into the slot 12, the pin sequentially passes through the assembly hole 321 and the pin hole on the bottom surface of the projection 11, as shown in fig. 4 and 7.

In a specific embodiment, two fins 34 are symmetrically arranged on the periphery of the end portion 33 of the connecting member 3 above the boss 32.

In a specific embodiment, the connecting member 3 is a rod-shaped structure, the upper end surface of the support rod 2 is provided with a blind hole 21, and the lower end of the boss 32 is embedded in the blind hole 21.

In a specific embodiment, the support rod 2 of the present embodiment comprises a support rod 22 and a necking section 23 arranged at the upper end of the support rod, wherein the necking section 23 is provided with the blind hole 21. The depth of the blind hole 21 is preferably greater than the length of the throat section.

In order to ensure the integrity of the outer surface and visual simplicity, the projection 11 of the back plate 1 is assembled with the support rod 2 through the connecting member 3, and the upper surface 221 of the support rod 22 connected with the necking section is in contact with the lower surface of the projection 11.

It should be noted that the drawings provided in the above embodiments are only for schematically illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings and not drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of each component in actual implementation may be arbitrarily changed, and the component layout may be more complicated. The utility model can also include other equivalent embodiments, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A chair backrest fixing structure is characterized by comprising a backrest part and a supporting frame formed by symmetrically arranging three supporting rods, wherein the backrest part comprises a backrest plate and a connecting piece, and the upper end and the lower end of the connecting piece are detachably connected with the backrest plate and the upper ends of the supporting rods respectively; the lower end of the connecting piece is provided with a nut, a through hole is formed in the inner side face, facing the center of the supporting frame, of the supporting rod, and a screw penetrates through the through hole and is fastened with the nut.

2. A chair back fixing structure according to claim 1, wherein the connecting member is recessed at a lower end thereof, and the nut is fitted in the recess.

3. The chair back fixing structure of claim 1, wherein the outer side of the back plate is provided with a protrusion, the bottom of the protrusion is provided with a slot, and the upper end of the connecting member is inserted into the slot.

4. A chair back fixing structure according to claim 3, wherein a boss is provided at an upper end of the connecting member, and a fitting hole is formed at the boss;

after the upper end of the connecting piece is inserted into the slot, the pin sequentially passes through the assembling hole and the pin hole on the bottom surface of the bump.

5. A chair back fixing structure according to claim 3, wherein the connecting member has two wings symmetrically formed on the outer periphery of the upper end portion thereof above the boss.

6. A chair back rest fixing structure as claimed in any one of claims 4 to 5, wherein the connecting member is a rod-like structure, the supporting rod is provided with a blind hole at an upper end surface thereof, and the lower end of the boss is inserted into the blind hole.

7. A chair back rest fixing structure as claimed in claim 6, wherein the support rod comprises a support rod and a tapered section provided at an upper end of the support rod, the tapered section being provided with the blind hole.

8. A chair back rest fixing structure according to claim 7, wherein the projection of the back rest plate is fitted to the supporting rod through a connecting member, and an upper surface of the supporting rod, which is connected to the tapered section, is in contact with a lower surface of the projection.