CN219422512U - Backrest dismounting structure of chair - Google Patents
Backrest dismounting structure of chair Download PDFInfo
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- CN219422512U CN219422512U CN202223533848.XU CN202223533848U CN219422512U CN 219422512 U CN219422512 U CN 219422512U CN 202223533848 U CN202223533848 U CN 202223533848U CN 219422512 U CN219422512 U CN 219422512U
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- backrest
- connecting piece
- plate
- support plate
- inner plate
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Abstract
The utility model relates to the technical field of chair manufacturing, in particular to a backrest dismounting structure of a chair, which comprises the following components: the backrest support plate, the first connecting piece, the second backrest inner plate and the first backrest inner plate are connected in sequence. According to the technical scheme of the backrest support plate, the firmness of the backrest support plate is improved, a user cannot easily damage the backrest support plate even if leaning on the backrest support plate with great force, and the safety of a product is higher.
Description
Technical Field
The utility model relates to the technical field of chair manufacturing, in particular to a backrest dismounting structure of a chair.
Background
The chair is one of furniture which is indispensable in offices and families, the chairs on the market at present are divided into two types, namely, a backrest of the chair is directly and fixedly connected to a connecting rod, the connecting rod is fixedly connected with a chair chassis, and the backrest of the chair cannot be attached to human curves when a user uses the chair, so that the chair does not accord with human engineering; the other is to arrange a connecting structure between the connecting rod and the backrest, and the connecting mode is more fit with the curve of the human body, so that the use is comfortable.
Patent CN210748339U provides a posture correcting double backrest mechanism provided with a connecting structure, but the utility model has the following disadvantages:
(1) The posture correcting double-backrest mechanism adjusts the angle between the connecting structure and the double-backrest connecting piece through the inverted T-shaped backrest fixing part, has poor flexibility, and has certain potential safety hazard because the T-shaped backrest fixing part is thinner and leans on under high force when in use, and the possibility of damage and breakage exists;
(2) This two back mechanisms of correcting appearance need use the bolt in proper order to fix blotter, backing plate on the connector of T shape back fixed part when the equipment, afterwards, the joint mechanism (specifically means circular two bosss and the draw-in hole that is equipped with the recess) between rethread backing plate and the inner panel and PU back foaming technology force with backing plate, inner panel and PU back integration, therefore this kind of two back mechanism of correcting appearance relation is comparatively complicated, is difficult to realize the family dismouting, and in the maintenance process of follow-up use, is difficult to the pointedly change part, the sexual valence relative altitude is lower.
Disclosure of Invention
Aiming at the technical problems, the utility model provides a backrest dismounting structure of a chair, which has high safety, simple connection relation and convenient installation.
The utility model provides a backrest dismounting structure of a chair, comprising:
the backrest support plate and the backrest inner plate are detachably connected by a connecting mechanism;
the connecting mechanism comprises a first connecting piece and a second connecting piece, wherein one end of the first connecting piece is provided with a concave clamping mechanism, and a butt joint ridge which is arranged on the periphery of the clamping mechanism and used for adjusting the angle of the first connecting piece is arranged in the middle of the clamping mechanism, a connecting hole which penetrates through two ends of the first connecting piece is formed in the middle of the clamping mechanism, a groove which is used for being connected with the second connecting piece is formed in the other end of the first connecting piece, a protrusion matched with the groove is formed in one end of the second connecting piece, a screw hole which penetrates through the second connecting piece is formed in the middle of the protrusion, and at least one through hole which penetrates through the first connecting piece and the second connecting piece is formed in the surface of the contact side of the groove and the protrusion and used for fixing the first connecting piece and the second connecting piece.
The utility model is provided with the plurality of abutting edges, and the curved surface angle of the backrest support plate can be adapted by adjusting the height difference and the angle between the abutting edges, so that the adjusting scheme is more flexible and safer compared with the prior art.
And secondly, the first connecting piece and the second connecting piece are arranged, so that the flexibility of dismounting the backrest dismounting structure is improved, the connection relationship is simple, and the mounting is convenient.
Preferably, the backrest support plate is provided with a seat body connected with the first connecting piece, the seat body is convexly provided with a clamping protrusion which is clamped with the clamping mechanism, and a transverse shaft rod for connecting the first connecting piece with the backrest support plate through bolts is arranged in the clamping protrusion.
According to the utility model, one end of the transverse shaft rod is skillfully penetrated and built in the clamping protrusion, so that the first connecting piece can be firmly fixed on the backrest support plate through the bolt, and on the other hand, the stability of connection is improved and the occurrence of connection looseness is avoided through the arrangement of the clamping protrusion.
Preferably, the seat body is further provided with a seat body ridge matched with the abutting ridge to further adjust the angle of the first connecting piece.
According to the utility model, the stability of the connection between the first connecting piece and the backrest support plate can be further improved through the matching of the heights and angles of the abutting edges and the seat body edges, and the backrest dismounting structure is more durable.
Preferably, the back inner panel includes:
a first backrest inner plate convexly provided with a butt-joint shaft rod connected with the second connecting piece through bolts;
the second backrest inner plate is provided with a contact groove connected with one end, far away from the bulge, of the second connecting piece, and a through hole for passing through the butt joint shaft rod is arranged in the contact groove.
According to the technical scheme, the first backrest inner plate and the second backrest inner plate can be detachably connected together through the second connecting piece, the connection relation of the backrest dismounting structure is simple, the household dismounting can be realized, in addition, in the maintenance process, the replacement of the targeted damaged part can be carried out, and the cost performance is higher.
As a further preferred feature, the first back inner panel is provided with reinforcing ribs for reinforcing the strength of the back inner panel.
Further preferably, a clip is provided between the first back inner panel and the second back inner panel.
According to the technical scheme, the firmness of connection between the first backrest inner plate and the second backrest inner plate can be enhanced.
As a further preferable mode, the first backrest inner plate is provided with arc-shaped surfaces which are used for being attached to the back of a human body along two sides of the longitudinal middle line.
Preferably, the backrest support plate further comprises a base, a seat plate is arranged above the base, and the seat plate is connected with the base through bolts and nuts.
As a further preference, at least one of the clamping mechanism and the contact groove is provided with a limit edge.
According to the technical scheme, the first connecting piece and the backrest support plate and the second connecting piece and the second backrest inner plate can be effectively prevented from rotating, and the connection is more stable.
Preferably, the grooves are polygonal grooves.
According to the technical scheme, the connection between the first connecting piece and the second connecting piece can be further enhanced.
Preferably, an annular groove is arranged between two ends of the second connecting piece.
According to the technical scheme, a certain deformation space can be provided, so that the comfort level of the backrest dismounting structure is improved.
Compared with the prior art, the utility model has the following beneficial effects:
(1) According to the utility model, through the arrangement of the abutting edge and the seat body edge, the connection angle between the backrest support plate and the first connecting piece can be flexibly adjusted, the first connecting piece is effectively prevented from being in incomplete contact with the backrest support plate when leaning, so that damage is caused;
(2) The utility model skillfully improves the separability among all the components through the arrangement of the connecting structure, so that the assembly and disassembly structure of the backrest is simpler, the family disassembly and assembly can be realized, and as a result, the damaged components can be replaced pertinently in the maintenance process, and the backrest has high cost performance and is more durable;
(3) According to the utility model, the shape of the inner plate of the first backrest and the annular groove of the second connecting piece are arranged, so that the comfort level of the backrest dismounting structure is improved on the premise of ensuring the safety and durability, and the technical scheme is more in accordance with the principle of human engineering.
Drawings
For a more clear description of the embodiments of the utility model, the following brief description of the drawings will be provided:
FIG. 1 is an exploded view of a backrest attaching/detaching structure according to embodiment 1 of the present utility model;
FIG. 2 is an enlarged view of the seat according to embodiment 1 of the present utility model;
FIG. 3 is a schematic structural view of a first connector according to embodiment 1 of the present utility model;
FIG. 4 is a schematic structural diagram of a second connector according to embodiment 1 of the present utility model;
reference numerals illustrate: a back support plate 1; a base 11; a snap-fit protrusion 111; a transverse shaft 112; a seat rib 113; a seat plate 12; a base 13; a first connector 2; a clamping mechanism 21; abutment ribs 22; a connection hole 23; a second connector 3; a protrusion 31; screw holes 32; a through hole 33; an annular groove 34; a second back inner panel 4; a contact groove 41; a through hole 42; a first back inner panel 5; a docking shaft 51; reinforcing ribs 52; a catch 53.
Detailed Description
The utility model is further described below with reference to the drawings and specific examples. Those of ordinary skill in the art will be able to implement the utility model based on these descriptions. In addition, the embodiments of the present utility model referred to in the following description are typically only some, but not all, embodiments of the present utility model. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.
Example 1
Referring to fig. 1 to 4, the chair backrest disassembly and assembly structure of the present embodiment includes a backrest support plate 1, a first connecting member 2, a second connecting member 3, a second backrest inner plate 4, and a first backrest inner plate 5, which are sequentially connected, and the specific structure thereof is as follows:
back support plate 1: in this embodiment, the backrest support plate 1 is an L-shaped plate, the surface of the longitudinal direction plate of the L-shaped plate is provided with a seat 11, a clamping protrusion 111 is convexly arranged on the seat 11, a transverse shaft rod 112 for bolting the first connecting piece 2 to the backrest support plate 1 is arranged in the clamping protrusion 111, a seat ridge 113 for adjusting the angle of the first connecting piece 2 is arranged outside the clamping protrusion 111, the seat ridge 113 comprises a seat circular ridge and a line ridge positioned between the seat circular ridge and the clamping protrusion 111, and the clamping protrusion 111 further comprises a ring body wrapping the side surface of the transverse shaft rod 112 and a first positioning block arranged on the side surface of the ring body and integrally formed with the ring body. The L-shaped plate is horizontally provided with a base 13, the base 13 is also provided with a seat plate 12 connected with bolts and nuts of the base 13, and the surface of the seat plate 12 is provided with round holes.
First connector 2: in this embodiment, at one end of the first connecting piece 2 connected with the seat 11, a concave clamping mechanism 21 is correspondingly provided, the clamping mechanism 21 is provided with three limiting edges connected with the first positioning block, an abutting edge 22 abutting against the seat edge 113 is provided at the outside of the clamping mechanism 21, and is used for adjusting the contact angle of the first connecting piece 2 and the backrest support plate 1, so as to avoid the first connecting piece 2 from being damaged due to incomplete contact between the first connecting piece 2 and the seat 11 when leaning, a connecting hole 23 penetrating through two ends of the first connecting piece 2 is provided in the middle of the clamping mechanism 21, and a groove used for being connected with the second connecting piece 3 is provided at the other end of the first connecting piece 2, and in this embodiment, the groove is octagonal.
Second connector 3: in this embodiment, at one end of the second connecting piece 3 connected with the first connecting piece 2, a corresponding octagonal protrusion 31 is provided, a screw hole 32 penetrating through the second connecting piece 3 is provided in the middle of the protrusion 31, a through hole 33 longitudinally penetrating through the first connecting piece 2 and the second connecting piece 3 is provided on the surface of the contact side of the groove and the protrusion 31, and is used for fixing the first connecting piece 2 and the second connecting piece 3 by a bolt and a nut, in this embodiment, the other end of the second connecting piece 3 is a cylinder, and a second positioning block is provided on the side surface of the cylinder, and the second positioning block and the cylinder are integrally formed, in addition, an annular groove 34 is formed between two ends of the second connecting piece, so as to provide a certain deformation space, so as to improve the comfort of the chair.
First back inner panel 5: in this embodiment, the first back inner plate 5 is convexly provided with a butt axle 51 connected with the second connecting piece 3 by bolts, and the first back inner plate 5 is further provided with a reinforcing rib 52 for reinforcing the strength of the first back inner plate 5.
Second back inner panel 4: in this embodiment, the second backrest inner plate 4 is provided with a contact groove 41 connected to the other end of the second connecting piece 3, the contact groove 41 is provided with three limiting edges connected to the second positioning block, and a through hole 42 for passing through the butt-joint shaft rod 51 is further provided in the contact groove 41.
In addition, 8 sets of fasteners 53 for fixing positions are correspondingly arranged between the first backrest inner plate 5 and the second backrest inner plate 4 in the embodiment.
Example 2
The present embodiment is different from the above embodiment only in the following points, and the rest of the same parts will not be described in detail here.
In this embodiment, the clamping protrusion 111 is a cube, and the clamping mechanism 21 is provided with four limiting edges correspondingly; the end of the second connecting piece 3, which contacts with the contact groove 41, is a cuboid, and four limit edges are arranged on the contact groove 41.
Claims (10)
1. A back rest assembling and disassembling structure of a chair, comprising:
the backrest support plate and the backrest inner plate are detachably connected by a connecting mechanism;
the connecting mechanism comprises a first connecting piece and a second connecting piece, wherein one end of the first connecting piece is provided with a concave clamping mechanism, and a butt joint ridge which is arranged on the periphery of the clamping mechanism and used for adjusting the angle of the first connecting piece is arranged in the middle of the clamping mechanism, a connecting hole which penetrates through two ends of the first connecting piece is formed in the middle of the clamping mechanism, a groove which is used for being connected with the second connecting piece is formed in the other end of the first connecting piece, a protrusion matched with the groove is formed in one end of the second connecting piece, a screw hole which penetrates through the second connecting piece is formed in the middle of the protrusion, and at least one through hole which penetrates through the first connecting piece and the second connecting piece is formed in the surfaces of the groove and the protrusion contact side and used for fixing the first connecting piece and the second connecting piece.
2. The backrest disassembly and assembly structure according to claim 1, wherein the backrest support plate is provided with a seat body connected with the first connecting piece, the seat body is convexly provided with a clamping protrusion clamped with the clamping mechanism, and a transverse shaft rod for connecting the first connecting piece with the backrest support plate through bolts is arranged in the clamping protrusion.
3. The backrest mounting and dismounting structure as claimed in claim 2, wherein the seat body is further provided with a seat body ridge which is matched with the abutting ridge to further adjust the angle of the first connecting piece.
4. The backrest disassembly and assembly structure according to claim 1, wherein the backrest inner plate includes:
a first backrest inner plate convexly provided with a butt-joint shaft rod connected with the second connecting piece through bolts;
the second backrest inner plate is provided with a contact groove connected with one end, far away from the bulge, of the second connecting piece, and a through hole for passing through the butt joint shaft rod is arranged in the contact groove.
5. The back attachment/detachment structure according to claim 4, wherein the first back inner panel is provided with a reinforcing rib for reinforcing the strength of the back inner panel.
6. The backrest disassembly and assembly structure according to claim 4, wherein a clip is provided between the first backrest inner plate and the second backrest inner plate.
7. The backrest attaching and detaching structure according to claim 4, wherein the first backrest inner plate is provided with arc-shaped surfaces for fitting the back of the human body along both sides of the longitudinal middle line.
8. The backrest disassembly and assembly structure according to claim 1, wherein the backrest support plate further comprises a base, a seat plate is arranged above the base, and the seat plate is connected with the base through bolts and nuts.
9. The backrest disassembly and assembly structure according to any one of claims 1 and 4, wherein at least one of the click mechanism and the contact groove is provided with a limit edge.
10. The backrest mounting and dismounting structure as claimed in claim 1, wherein an annular groove is provided between both ends of the second connecting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223533848.XU CN219422512U (en) | 2022-12-29 | 2022-12-29 | Backrest dismounting structure of chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223533848.XU CN219422512U (en) | 2022-12-29 | 2022-12-29 | Backrest dismounting structure of chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219422512U true CN219422512U (en) | 2023-07-28 |
Family
ID=87333184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223533848.XU Active CN219422512U (en) | 2022-12-29 | 2022-12-29 | Backrest dismounting structure of chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219422512U (en) |
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2022
- 2022-12-29 CN CN202223533848.XU patent/CN219422512U/en active Active
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