Office chair with back seat synchronous linkage device

Abstract

The utility model relates to the technical field of office chairs, in particular to an office chair with a back seat synchronous linkage device. The office chair with the back seat synchronous linkage device comprises a supporting frame, a sliding groove is formed in the top of the supporting frame, a mounting groove is formed in the right side of the supporting frame, the mounting groove is communicated with the sliding groove, a buffering cushion is arranged on the left side of the inner side wall of the sliding groove, a convex block is arranged in the sliding groove, and the back seat synchronous linkage device is arranged in the convex block. A groove is formed in the bottom of the convex block; according to the office chair disclosed by the utility model, the convex block is assisted to stably slide left and right through the rollers, and hard contact between the convex block and the support frame can be changed into soft contact through the buffer cushion, so that noise generated when the convex block is reset is reduced, and the use comfort of the office chair is further improved; when the elastic force of the spring is reduced, the cross bolt is screwed off, the connecting block can move rightwards to be separated from the supporting frame, and at the moment, the spring can be pulled out of the sliding groove of the supporting frame, so that the effect of quickly replacing parts is achieved.

Description

Technical Field

[0001] This utility model relates to the field of office chair technology, specifically an office chair with a backrest and seat synchronous linkage device. Background Technology

[0002] To improve comfort, most office chairs on the market have added a backrest-seat synchronization mechanism. However, the reset element of the backrest-seat synchronization mechanism is mostly a spring, and the spring will lose elasticity after long-term use. At this time, the spring needs to be replaced to ensure the normal operation of the backrest-seat synchronization mechanism. However, the springs of traditional office chairs with backrest-seat synchronization mechanisms are mostly hidden in the backrest-seat synchronization mechanism, making it difficult for ordinary users to replace the springs. To address the above situation, we will innovate the technology based on the existing office chairs with backrest-seat synchronization mechanisms. Utility Model Content

[0003] The purpose of this invention is to provide an office chair with a backrest and seat synchronous linkage device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an office chair with a backrest and seat synchronous linkage device, comprising:

[0005] A support frame has a sliding groove on its top and an installation groove on its right side, which is connected to the sliding groove. A buffer pad is provided on the left side of the inner wall of the sliding groove. A convex block is provided inside the sliding groove, and a groove is provided at the bottom of the convex block. A roller is provided in the groove through a rotating shaft. A guide post is provided on the right side of the convex block. A quick-release assembly is placed on the right side of the support frame.

[0006] Preferably, the quick-release assembly includes a connecting block, with through holes evenly distributed on the right side of the connecting block, a cross bolt disposed in the through holes, a guide hole distributed on the right side of the connecting block, and a first annular groove distributed on the left side of the connecting block, with a spring disposed in the first annular groove.

[0007] Preferably, threaded holes are evenly distributed on the right side of the support frame, the connecting block is located on the right side of the support frame, and the cross bolt is screwed into the threaded holes.

[0008] Preferably, a second annular groove is provided on the right side of the convex block, the left side of the spring is located in the second annular groove, the spring is located on the outer ring of the guide post, and the right side of the guide post is inserted into the guide hole of the connecting block.

[0009] Preferably, the top of the convex block passes through the top of the slide groove of the support frame and is connected to a seat, the bottom of the support frame is provided with chair legs, and the left side of the support frame is provided with an elastic bracket.

[0010] Preferably, a connecting seat is provided on the right side of the elastic bracket via a pivot, a backrest is provided on the right side of the connecting seat, a first connecting groove is provided on the right side of the backrest, a second connecting groove is provided on the left side of the seat, and a connecting plate is provided in the first and second connecting grooves via a pivot.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention uses rollers to assist the convex block in stable left and right sliding, and uses a buffer pad to change the hard contact between the convex block and the support frame into a soft contact, thereby reducing the noise when the convex block resets and improving the comfort of the office chair.

[0013] When the spring force decreases, unscrewing the cross bolt will move the connecting block to the right and separate it from the support frame. At this point, the spring can be pulled out of the slide groove of the support frame, thus achieving the effect of quick component replacement. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an office chair with a backrest synchronous linkage device according to the present invention;

[0015] Figure 2 This is a front sectional view of an office chair with a backrest and seat synchronous linkage device according to the present invention.

[0016] Figure 3 This utility model Figure 2 A magnified view of a portion of the image.

[0017] In the diagram: 1. Chair leg; 11. Chair seat; 12. Support frame; 13. Backrest; 14. Elastic support; 15. Connecting seat; 16. Connecting plate; 121. Convex block; 122. Roller; 123. Buffer pad; 124. Guide post; 125. Spring; 126. Connecting block; 127. Cross bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3An office chair with a backrest-seat synchronous linkage device includes a support frame 12. The top of the support frame 12 has a sliding groove, and the right side of the support frame 12 has an installation groove connected to the sliding groove. A buffer pad 123 is fixedly installed on the left side of the inner wall of the sliding groove. A convex block 121 is slidably disposed within the sliding groove. A groove is formed at the bottom of the convex block 121, and a roller 122 is rotatably disposed within the groove via a pivot. A guide post 124 is fixedly installed on the right side of the convex block 121. The roller 122 assists in the stable left-right sliding of the convex block 121. The buffer pad 123 transforms the hard contact between the convex block 121 and the support frame 12 into a soft contact, thereby reducing noise when the convex block 121 resets, and thus improving the comfort of the office chair. The quick-release assembly, comprising a connecting block 126, is mounted on the right side of the support frame 12. The connecting block 126 has through holes evenly spaced on its right side, with a cross bolt 127 rotatably mounted within each hole. A guide hole is also present on the right side of the connecting block 126. A first annular groove is formed on the left side of the connecting block 126, within which a spring 125 is placed. Threaded holes are evenly spaced on the right side of the support frame 12. The connecting block 126 is located on the right side of the support frame 12, and the cross bolt 127 is screwed into the threaded holes. A second annular groove is formed on the right side of the convex block 121, with the left side of the spring 125 located within it. The first and second annular grooves limit and stabilize both ends of the spring 125. The spring 125 is located within the guide hole. The outer ring of the column 124, the right side of the guide column 124 is inserted into the guide hole of the connecting block 126, the top of the convex block 121 passes through the top of the slide groove of the support frame 12 and is connected to the seat 11, the bottom of the support frame 12 is fixedly provided with the chair leg 1, the left side of the support frame 12 is fixedly provided with the elastic bracket 14, the right side of the elastic bracket 14 is rotatably provided with the connecting seat 15 via a pivot, the right side of the connecting seat 15 is fixedly provided with the backrest 13, the right side of the backrest 13 is provided with the first connecting groove, the left side of the seat 11 is provided with the second connecting groove, the first connecting groove and the second connecting groove are rotatably provided with the connecting plate 16 via a pivot, when the user's back presses the backrest 13 to the left and the buttocks slide the seat 11 to the right, at this time the backrest 13 is connected with the connecting plate 16. When the chair 11 is rotated around the center 15, the connecting plate 16 will be pushed to drive the seat 11 to slide to the right, thereby realizing the linkage between the backrest and the seat. When the seat 11 slides, it will drive the convex block 121 to slide and compress the spring 125. The compression direction of the spring 125 is guided and limited by the guide post 124. When the user gets up, the spring 125 uses its own rebound force to drive the convex block 121 to return to its original position, thereby driving the seat 11, the connecting plate 16 and the backrest 13 to return to their original position in linkage. When the spring force of the spring 125 decreases, the cross bolt 127 can be unscrewed to move the connecting block 126 to the right and separate it from the support frame 12. At this time, the spring 125 can be pulled out from the slide groove of the support frame 12, thereby achieving the effect of quick replacement of parts.

[0020] Working principle: When the user presses the backrest 13 to the left and slides the seat 11 to the right, the backrest 13 flips around the connecting plate 15, pushing the connecting plate 16 to slide the seat 11 to the right, thus achieving backrest-seat linkage. When the seat 11 slides, it drives the convex block 121 to slide and compresses the spring 125. The guide post 124 guides and limits the compression direction of the spring 125. When the user stands up, the spring 125 uses its own rebound force to drive the convex block 121 to return to its original position, thereby driving the seat 11 and connecting plate 15 to slide to the right. The connecting plate 16 and the backrest 13 are linked to reset. The roller 122 assists the convex block 121 to slide stably left and right. The buffer pad 123 can change the hard contact between the convex block 121 and the support frame 12 into a soft contact, thereby reducing the noise when the convex block 121 resets and improving the comfort of the office chair. When the spring force of the spring 125 decreases, the cross bolt 127 can be unscrewed to move the connecting block 126 to the right and separate it from the support frame 12. At this time, the spring 125 can be pulled out from the slide groove of the support frame 12, thereby achieving the effect of quick component replacement.

Claims

1. An office chair with a backrest-seat synchronous linkage device, characterized in that, include: A support frame (12) is provided with a sliding groove at the top and an installation groove at the right side of the support frame (12). The installation groove is connected to the sliding groove. A buffer pad (123) is provided on the left side of the inner wall of the sliding groove. A convex block (121) is provided in the sliding groove. A groove is provided at the bottom of the convex block (121). A roller (122) is provided in the groove through a rotating shaft. A guide post (124) is provided on the right side of the convex block (121). A quick-release assembly is placed on the right side of the support frame (12).

2. An office chair with a backrest and seat synchronous linkage device according to claim 1, characterized in that: The quick-release assembly includes a connecting block (126), with through holes evenly distributed on the right side of the connecting block (126), and a cross bolt (127) installed in the through holes. A guide hole is also distributed on the right side of the connecting block (126), and a first annular groove is provided on the left side of the connecting block (126), with a spring (125) placed in the first annular groove.

3. An office chair with a backrest-seat synchronous linkage device according to claim 2, characterized in that: The support frame (12) has threaded holes evenly distributed on its right side. The connecting block (126) is located on the right side of the support frame (12). The cross bolt (127) is screwed into the threaded hole.

4. An office chair with a backrest-seat synchronous linkage device according to claim 2, characterized in that: The convex block (121) has a second annular groove on its right side, the spring (125) is located in the second annular groove on its left side, the spring (125) is located on the outer ring of the guide post (124), and the right side of the guide post (124) is inserted into the guide hole of the connecting block (126).

5. An office chair with a backrest and seat synchronous linkage device according to claim 1, characterized in that: The top of the convex block (121) passes through the top of the slide groove of the support frame (12) and is connected to the seat (11). The bottom of the support frame (12) is provided with chair legs (1), and the left side of the support frame (12) is provided with an elastic bracket (14).

6. An office chair with a backrest-seat synchronous linkage device according to claim 5, characterized in that: A connecting seat (15) is provided on the right side of the elastic support (14) via a pivot, and a backrest (13) is provided on the right side of the connecting seat (15). A first connecting groove is provided on the right side of the backrest (13), and a second connecting groove is provided on the left side of the seat (11). A connecting plate (16) is provided in the first connecting groove and the second connecting groove via a pivot.

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