CN111419028A - Quick folding mechanism of office chair back - Google Patents

Abstract

The invention discloses a quick folding mechanism for an office chair backrest, which comprises a chair seat and a rubber cushion, wherein the rubber cushion is fixedly connected to the upper end of the chair seat, handrails are fixedly connected to the front side and the rear side of the upper end of the chair seat, the inner side of the chair seat is rotatably connected with the chair back through a pin shaft, a clamping block button is connected to the inner portion of a second base plate in an elastic matching mode, and a cushion block is connected to the inner portion of a pressing plate in an elastic matching mode. This quick folding mechanism of office chair back, structure scientific and reasonable, convenience safe in utilization, be provided with the seat support, the round pin axle, the fixture block button, the back of the chair, the fixture block, first backing plate, the chute, the clamp plate, cooperation between cushion and the second backing plate, when needing to carry out the lock, the user can inwards promote the fixture block button and remove the block of fixture block department, the inside spring force of clamp plate no longer receives the restriction at this moment and can promote the back of the chair rotatory critical point of crossing, make the back of the chair can carry out automatic folding lock, the folding process of having avoided prior art needs the user to manually carry out the lock operation.

Description

Quick folding mechanism of office chair back

Technical Field

The invention relates to the technical field of office chairs, in particular to a quick folding mechanism for an office chair backrest.

Background

Office chairs, english office chair, refer to various chairs that are equipped for convenient work in daily work and social activities, office mate divides office chair into narrow and broad sense, the narrow office chair refers to the back rest chair that people sit when carrying out desktop work under the state of sitting, the broad sense office chair is all chairs used for the office, including executive chair, middle class chair, reception chair, employee's chair, conference chair, visitor's chair, training chair etc. and often need to carry out folding operation to office chair in modern storage or transportation.

Although the prior art can realize folding the office chair, the prior art has the problem that the folding process needs the user to manually carry out the buckling operation.

Disclosure of Invention

The invention aims to provide a quick folding mechanism for office chair backrests, which is used for solving the problem that a user needs to manually carry out buckling operation in the folding process in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a quick folding mechanism of office chair back, includes seat support and cushion, the upper end rigid coupling of seat support has the cushion, the equal rigid coupling in both sides has the handrail around the upper end of seat support, the inboard of seat support all rotates with the back of the chair through the round pin axle and links to each other, the inner wall rigid coupling of the back of the chair has the screen cloth, the support is installed to the lower extreme of seat support, the chute has all been processed to the right-hand member inboard of seat support, the inside equal rigid coupling in both sides upper end around the back of the chair has first backing plate, the inside elastic fit of first backing plate links to each other there is the fixture block, the inboard equal rigid coupling of seat support has the second backing plate, the inside elastic fit of second backing plate links to each other there is the fixture block button, the inboard lower.

Preferably, the inclined groove is correspondingly connected with the inner groove at the left end of the second base plate.

Preferably, a clamping assembly can be formed between the clamping block and the second backing plate.

Preferably, the first base plate is fixedly connected with the chair back through screws, and the second base plate is fixedly connected with the chair seat through screws.

Compared with the prior art, the invention has the beneficial effects that: this quick folding mechanism of office chair back, structure scientific and reasonable, convenience safe in utilization:

be provided with the seat support, the round pin axle, the fixture block button, the back of the chair, the fixture block, first backing plate, the chute, the clamp plate, cooperation between cushion and the second backing plate, when making to carry out the back of the chair and open, can manually promote the back of the chair clockwise turning, realize that the fixture block promotes the cushion backward movement simultaneously with the block of second backing plate, extrude the inside spring of clamp plate, when needing to carry out the lock, the user can inwards promote the fixture block button and relieve the block of fixture block department's block, the inside spring force of clamp plate no longer receives the restriction and can promote the back of the chair rotatory critical point, make the back of the chair can carry out automatic folding lock, the folding process of having avoided prior art needs the.

Drawings

FIG. 1 is a schematic view of a fastening structure of the present invention;

FIG. 2 is a schematic view of the open configuration of the present invention;

FIG. 3 is a schematic view of the seat, back and first pad of FIG. 1;

fig. 4 is a rear view of the seat, cushion and second pad of fig. 1.

In the figure: 1. the chair base, 2, round pin axle, 3, fixture block button, 4, cushion, 5, the back of the chair, 6, the fixture block, 7, first backing plate, 8, screen cloth, 9, handrail, 10, support, 11, chute, 12, clamp plate, 13, cushion, 14, second backing plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a quick folding mechanism for office chair backrests comprises a chair seat 1 and a rubber cushion 4, wherein the upper end of the chair seat 1 is fixedly connected with the rubber cushion 4, the rubber cushion 4 can increase the comfort level of the chair seat 1, the front side and the rear side of the upper end of the chair seat 1 are fixedly connected with armrests 9, the chair seat 1 can support the armrests 9, the inner side of the chair seat 1 is rotatably connected with a chair back 5 through a pin shaft 2, the chair back 5 can rotate around the pin shaft 2, the inner wall of the chair back 5 is fixedly connected with a mesh cloth 8, the mesh cloth 8 can increase the elasticity of the back attaching part, the lower end of the chair seat 1 is provided with a support 10, the chair seat 1 can be supported through the support 10, the inner side of the right end of the chair seat 1 is provided with a chute 11, the chute 11 can be used for driving a clamping block 6 to move, the upper ends of the front side and the rear side of, the spring is arranged on the inner side of the clamping block 6, the clamping block 6 can move inwards to extrude the spring, the inner side of the seat 1 is fixedly connected with a second base plate 14, the seat 1 can support the second base plate 14, the inner part of the second base plate 14 is elastically matched and connected with a clamping block button 3, the inner side of the clamping block button 3 is provided with the spring, the clamping block button 3 moves inwards to extrude the spring, the clamping block button 3 can drive the clamping block 6 to move, the lower end of the inner side of the seat 1 is fixedly connected with a pressing plate 12, the seat 1 can be supported by the pressing plate 12, the inner part of the pressing plate 12 is elastically matched and connected with a cushion block 13, the rear end of the cushion block 13 is provided with the spring, the cushion block 13 moves backwards to extrude the spring, the chute 11 is correspondingly connected with the inner groove at the left end of the second base plate 14, the limiting process of the chute 11 and the clamping block 6 by the inner groove at the, the position of the clamping block 6 can be limited by the second cushion plate 14, the first cushion plate 7 is fixedly connected with the chair back 5 through screws, the second cushion plate 14 and the pressing plate 12 are fixedly connected with the chair seat 1 through screws, and the connection between the first cushion plate 7 and the chair back 5 and the connection between the second cushion plate 14 and the pressing plate 12 and the chair seat 1 can be conveniently mounted or dismounted.

When the office chair back fast folding mechanism is required to be used, firstly, when a user needs to rotate and open the chair back 5, the user can install the upper surface of the chair seat 1 by one hand, hold the chair back 5 by the other hand and start the chair back 5 to rotate and open clockwise around the pin shaft 2, in the rotating process, the chute 11 and the inner groove at the left end of the second base plate 14 can drive the clamping block 6 to move inwards to extrude the inner spring of the first base plate 7, in the last position, the inner spring of the first base plate 7 pushes the clamping block 6 to be inserted into the inner part of the second base plate 14 and attached to the clamping block button 3, the positioning between the chair seat 1 and the chair back 5 is realized through the clamping of the clamping block 6 and the second base plate 14, the opening use of the office chair is realized, meanwhile, in the opening process, the front end position of the chair back 5 can push the cushion block 13 to move towards the inner part of the pressing block 12, the inner, make the inside spring of briquetting 12 continuously keep in the extrusion state at the opening in-process, when the back of the chair 5 rotation lock of needs, the user can inwards extrude fixture block button 3, make fixture block button 3 can drive fixture block 6 and inwards move, remove the block between fixture block 6 and the second backing plate 14, the inside spring force of briquetting 12 no longer receives the restriction and can promote back of the chair 5 rotatory through cushion 13 this moment, make back of the chair 5 can automatic lock after the critical point in rotatory process, simultaneously first backing plate 7, second backing plate 14, fixture block 6 can be realized to the inside spring of clamp plate 12, the reset of fixture block button 3 and cushion 13, so that use next time.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a quick folding mechanism of office chair back, includes seat support (1) and cushion (4), the upper end rigid coupling of seat support (1) has cushion (4), its characterized in that: the front side and the rear side of the upper end of the chair seat (1) are fixedly connected with armrests (9), the inner side of the chair seat (1) is rotatably connected with the chair back (5) through a pin shaft (2), the inner wall of the chair back (5) is fixedly connected with a mesh (8), the lower end of the chair seat (1) is provided with a bracket (10), the right end inner side of the chair seat (1) is processed with a chute (11), the upper ends of the front and the back sides of the chair back (5) are fixedly connected with a first backing plate (7), the interior of the first backing plate (7) is elastically matched and connected with a clamping block (6), a second backing plate (14) is fixedly connected inside the inner side of the chair seat (1), the inside of the second backing plate (14) is elastically matched and connected with a clamping block button (3), the lower end of the inner side of the chair seat (1) is fixedly connected with a pressing plate (12), and the interior of the pressing plate (12) is elastically matched and connected with a cushion block (13).

2. The office chair back quick folding mechanism of claim 1, wherein: the chute (11) is correspondingly connected with the inner groove at the left end of the second backing plate (14).

3. The office chair back quick folding mechanism of claim 1, wherein: a clamping component can be formed between the clamping block (6) and the second backing plate (14).

4. The office chair back quick folding mechanism of claim 1, wherein: the chair is characterized in that the first base plate (7) is fixedly connected with the chair back (5) through screws, and the second base plate (14), the pressing plate (12) and the chair seat (1) are fixedly connected through screws.

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