Folding headrest office chair adjusting mechanism with linkage of connecting rods
The folding headrest adjustment mechanism of the office chair, which is linked by a linkage, solves the problem that existing office chair headrests cannot restrict the neck, and achieves effective support and angle adjustment for the neck, avoiding stiff neck and adapting to the needs of various support angles.
Patent Information
- Application Number
- CN202520772197.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-22
AI Technical Summary
Existing office chair headrests only provide support and cannot restrict neck movement when users are resting, which can easily lead to stiff neck.
Design a linkage-based folding headrest office chair adjustment mechanism. Through the linkage structure of the positioning headrest plate and the folding headrest plate, and by utilizing the cooperation of the hinge shaft, linkage rod and transmission gear shaft, the neck position can be restricted and the angle adjusted.
It provides effective support and restriction for the neck, preventing users from experiencing stiff necks while resting. It is easy to operate and adapts to various support angles.
Smart Images
Figure CN223860461U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to office chair technical field, concretely is a kind of folding headrest office chair adjusting mechanism of connecting rod linkage. BACKGROUND
[0002] Office chair is designed for the chair in front of desk in working environment, and it is very important to improve work efficiency and comfort. Office chair usually has headrest structure, which can provide additional support for head and neck, increase comfort and reduce neck pressure.
[0003] The headrest of the existing office chair is usually a rotatable structure, so that the headrest can rotate with the user's neck, and always support the neck part. The headrest is usually used with a specific arc-shaped support structure, but the headrest can only provide support. When the user rests, the neck part cannot be restricted, and the user is prone to falling asleep. SUMMARY
[0004] The utility model aims at providing a kind of folding headrest office chair adjusting mechanism of connecting rod linkage to solve the problem that the headrest of the office chair in the market can only provide support as described in the background, the user cannot restrict the neck part when resting, and the user is prone to falling asleep.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of folding headrest office chair adjusting mechanism of connecting rod linkage, including office chair adjusting mechanism main part and office chair, the office chair adjusting mechanism main part is located on office chair, positioning headrest plate is provided on the office chair adjusting mechanism main part, and the both sides of positioning headrest plate are respectively connected with folding headrest plate, and hinge shaft is installed between folding headrest plate and positioning headrest plate, the positioning headrest plate is U-shaped structure, and adjusting positioning seat is integrally arranged on the inner side of U-shaped structure in the back of positioning headrest plate, the inside of adjusting positioning seat is horizontal through structure, and through hole is formed in the middle part of the upper end of adjusting positioning seat, and transmission gear shaft is clamped in the through hole of the upper end of adjusting positioning seat, linkage rod is movably inserted into adjusting positioning seat, and linkage rod is symmetrically arranged about the center of transmission gear shaft, the opposite side of linkage rod is respectively provided with tooth slot engaged with the gear part of transmission gear shaft, and connecting rod is provided between the outer side end of linkage rod and folding headrest plate.
[0006] Preferably, the connecting rod is provided with a circular hole at both ends, and a shaft pin is movably inserted into the circular hole of the connecting rod, the back of the folding headrest plate is integrally provided with a fixing seat, and the shaft pin is respectively inserted and fastened with the fixing seat and the outer side end of the linkage rod.
[0007] Preferably, opposite sides of the linkage rod are integrally provided with limiting protrusions respectively, and the linkage rods are slidably engaged through the limiting protrusions, and the linkage rods constitute a rectangular structure through the engagement.
[0008] Preferably, the lower end of the adjusting positioning seat is further provided with stable plates integrally formed with the positioning headrest plate in a symmetrical manner, and the headrest mounting frames are clamped between the stable plates.
[0009] Preferably, the mounting shaft is penetrated between the headrest mounting frame and the stable plate, and the headrest mounting frame is bolted to the back of the office chair.
[0010] Preferably, the adjusting knob is rotatably clamped above the adjusting positioning seat, and the adjusting knob is inserted and fastened with the transmission gear shaft.
[0011] Compared with the prior art, the beneficial effects of the linkage rod linked folding type headrest office chair adjusting mechanism are as follows: the positioning headrest plate constitutes a basic positioning structure, and the rotatable folding headrest plate is arranged on both sides of the positioning headrest plate, so that the neck support part can be limited, and the linkage rod linked adjusting mode is adopted, so that the operation is convenient and easy to use. The linkage rod linked folding type headrest office chair adjusting mechanism rotatably connects the positioning headrest plate and the headrest mounting frame, retains the up-down rotating function of the traditional headrest, and the mechanism for adjusting the folding headrest plate is arranged on the back of the positioning headrest plate, so that the reliable positioning structure is obtained. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a top view of the linkage rod linked folding type headrest office chair adjusting mechanism of the utility model;
[0013] Figure 2 It is a structure schematic view of the folding headrest plate relative to the positioning headrest plate of the main body of the linkage rod linked folding type headrest office chair adjusting mechanism of the utility model;
[0014] Figure 3 It is a side view of the linkage rod linked folding type headrest office chair adjusting mechanism of the utility model;
[0015] Figure 4 It is a back view of the linkage rod linked folding type headrest office chair adjusting mechanism of the utility model;
[0016] Figure 5 It is a front view of the positioning headrest plate of the linkage rod linked folding type headrest office chair adjusting mechanism of the utility model and the office chair connecting structure through the headrest mounting frame.
[0017] In the figure: 1, office chair adjusting mechanism main body; 2, connecting rod; 3, linkage rod; 4, limiting protrusion; 5, transmission gear shaft; 6, gear slot; 7, shaft pin; 8, folding headrest plate; 9, fixed seat; 10, hinged shaft; 11, positioning headrest plate; 12, adjusting positioning seat; 13, adjusting knob; 14, mounting shaft; 15, headrest mounting frame; 16, stabilizing plate; 17, office chair. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0019] Please refer to Figures 1-5The utility model provides a technical scheme: a connecting rod linkage's folding type headrest office chair adjusting mechanism, including office chair adjusting mechanism main body 1 and office chair 17, office chair adjusting mechanism main body 1 is located on office chair 17, be equipped with the positioning headrest board 11 on office chair adjusting mechanism main body 1, and positioning headrest board 11 both sides are connected with folding headrest board 8 respectively, and folding headrest board 8 and positioning headrest board 11 between installation have hinged shaft 10, positioning headrest board 11 is U type structure, and positioning headrest board 11 back is integrally equipped with the adjusting positioning seat 12 in the inside of U type structure, still rotatable joint of adjusting positioning seat 12 upper portion has adjusting knob 13, and adjusting knob 13 and transmission gear shaft 5 plug joint fastening, this structure passes through adjusting knob 13 and can realize the synchronous drive of transmission gear shaft 5 by rotating, to let transmission gear shaft 5 drive linkage lever 3 to occur linear activity, adjusting positioning seat 12 carries out the linear movement limit processing of linkage lever 3, adjusting positioning seat 12 inside is the transverse through structure, and adjusting positioning seat 12 upper end middle part is equipped with the through -hole, adjusting positioning seat 12 lower end still is equipped with the firm plate 16 with positioning headrest board 11 integral constitution, and the firm plate 16 between snap has headrest mounting bracket 15, this structure passes through the firm plate 16, adjusting positioning seat 12 and positioning headrest board 11 and constitutes a reliable headrest positioning structure, positioning headrest board 11 and folding headrest board 8 still will be used in actual application with soft material, ensure the comfort of neck support, and the 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through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -hole of the through -The connecting rod 2 is rotatably connected with the linkage rod 3 and the folding headrest plate 8 through the shaft pin 7, the linear movement of the linkage rod 3 can drive the connecting rod 2 to move, thereby driving the folding headrest plate 8 to move through the connecting rod 2, and then the folding headrest plate 8 is rotatably connected with the positioning headrest plate 11 through the hinge shaft 10, and the connecting rod 2 supports and stabilizes the folding headrest plate 8 after the linkage rod 3 is adjusted.
[0020] Working principle: when the linkage rod linkage folding headrest office chair adjusting mechanism is used, first, the positioning headrest plate 11 is fixed with the headrest mounting frame 15 through the cooperation of the stable plate 16 and the mounting shaft 14, the headrest mounting frame 15 is mounted on the back of the office chair 17 through bolts or special structures, the folding headrest plate 8 is rotatably connected with the positioning headrest plate 11 through the hinge shaft 10, the linkage rods 3 are movably clamped with each other through the limiting protrusions 4, the linkage rods 3 are penetrated in the adjusting positioning seat 12, the positioning of the linkage rods 3 is realized through the meshing of the gear part of the transmission gear shaft 5 and the tooth groove 6, the connecting rod 2 is rotatably connected with the outer side end of the linkage rod 3 and the fixed seat 9 through the shaft pin 7, the relative connection between the linkage rod 3 and the folding headrest plate 8 is realized, the adjusting knob 13 fastened with the transmission gear shaft 5 is arranged on the upper end of the adjusting positioning seat 12, the rotation of the transmission gear shaft 5 is realized through the rotation of the adjusting knob 13, thereby the movement of the linkage rod 3 is realized through the meshing of the gear and the tooth groove 6, when the linkage rod 3 moves outward, the folding headrest plate 8 is rotated under the positioning of the hinge shaft 10 through the connection of the linkage rod 3 and the folding headrest plate 8, thereby the angle between the folding headrest plate 8 and the positioning headrest plate 11 is adjusted, the area between the folding headrest plate 8 and the positioning headrest plate 11 can be used for neck restriction, and the situation of falling pillow when the user rests is avoided, the angle adjustment of the folding headrest plate 8 of the office chair adjusting mechanism main body 1 can be realized only through the adjusting knob 13, the use of the office chair 17 is facilitated, and a series of work is completed.
[0021] Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A linkage-driven folding headrest office chair adjustment mechanism, comprising an office chair adjustment mechanism body (1) and an office chair (17), wherein the office chair adjustment mechanism body (1) is disposed on the office chair (17), characterized in that: The main body (1) of the office chair adjustment mechanism is provided with a positioning headrest plate (11), and folding headrest plates (8) are respectively connected to both sides of the positioning headrest plate (11). A hinge shaft (10) is installed between the folding headrest plate (8) and the positioning headrest plate (11). The positioning headrest plate (11) has a U-shaped structure, and an adjustment positioning seat (12) is integrally provided on the back of the positioning headrest plate (11) on the inner side of the U-shaped structure. The adjustment positioning seat (12) has a transverse through structure inside. (12) A through hole is provided in the middle part of the upper end, and a transmission gear shaft (5) is engaged in the through hole of the upper end of the adjusting positioning seat (12). A linkage rod (3) is movably inserted in the adjusting positioning seat (12), and the linkage rod (3) is symmetrically arranged about the center of the transmission gear shaft (5). A tooth groove (6) is provided on the opposite side of the linkage rod (3) to mesh with the gear part of the transmission gear shaft (5), and a connecting rod (2) is provided between the outer end of the linkage rod (3) and the folding headrest plate (8).
2. The linkage-driven folding headrest office chair adjustment mechanism according to claim 1, characterized in that: The connecting rod (2) has round holes at both ends, and a pivot pin (7) moves through the round holes of the connecting rod (2). The back of the folding headrest plate (8) is integrally provided with a fixing seat (9), and the pivot pin (7) is inserted and fastened to the fixing seat (9) and the outer end of the linkage rod (3).
3. The linkage-driven folding headrest office chair adjustment mechanism according to claim 1, characterized in that: The opposing sides of the linkage rods (3) are respectively provided with limiting protrusions (4), and the linkage rods (3) slide and engage with each other through the limiting protrusions (4), and the linkage rods (3) form a rectangular structure through engagement.
4. The linkage-driven folding headrest office chair adjustment mechanism according to claim 1, characterized in that: The lower end of the adjustment positioning seat (12) is also symmetrically provided with a stabilizing plate (16) integrally formed with the positioning headrest plate (11), and a headrest mounting bracket (15) is engaged between the stabilizing plates (16).
5. The linkage-driven folding headrest office chair adjustment mechanism according to claim 4, characterized in that: A mounting shaft (14) runs through the headrest mounting bracket (15) and the stabilizing plate (16), and the headrest mounting bracket (15) is bolted to the back of the office chair (17).
6. The linkage-driven folding headrest office chair adjustment mechanism according to claim 1, characterized in that: An adjustment knob (13) is also rotatably engaged above the adjustment positioning seat (12), and the adjustment knob (13) is inserted and secured to the transmission gear shaft (5).