Linkage type office chair structure

Abstract

A linkage type office chair structure comprises chair legs, a base, a chair seat, a chair back and armrests, the base is installed at the tops of the chair legs, the chair legs are fixed to the bottom of the chair seat through the base to form a support, a movable plate capable of rotating up and down is arranged on the rear portion of the base, and supporting rods extending towards the two sides are arranged on the movable plate. The upper ends of the handrails are connected to the side faces of the handrails, and the lower ends of the handrails are connected to the ends of the supporting rods to form supporting, so that when the chair back inclines backwards, the handrails can be linked through the movable plate to incline backwards together, the handrails can act in cooperation with the action of the chair back, stable supporting is provided for arms, and the comfort of the office chair is guaranteed; meanwhile, the fixed seat and the supporting seat are arranged on the base, the movable plate is movably connected between the fixed seat and the supporting seat, and when the chair back inclines backwards, the movable plate can be linked with the supporting seat to drive the chair seat to be adjusted upwards, so that the chair is more suitable for the sitting posture of a human body, and the comfort of the office chair is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to office chair technical field, concretely relates to a linkage type office chair structure. BACKGROUND

[0002] In the modern office environment, office chair as important office equipment, its comfort and ergonomic design are important to protect the health of office workers and improve work efficiency. The traditional office chair often adopts fixed seat and backrest structure, cannot be adjusted flexibly according to the sitting posture requirement of user, and long time use can easily lead to discomfort of back, neck and waist.

[0003] In recent years, with the deepening of ergonomic research and the continuous development of office furniture technology, some office chairs with adjusting function appear on the market, which can be referred to as the adjustable office chair disclosed in patent application No. 202222940544.9, which can adjust the height of the seat plate, the height of the headrest, the height of the armrest plate and the inclination angle of the backrest, etc. by manual mode to adapt to the sitting posture requirements of different users. However, these adjustment methods can only realize the adjustment of single component, and cannot realize the linkage between components. For example, when the height of the armrest plate is adjusted, if the backrest is inclined backward, the armrest plate will still be in the original position, which will cause the user's arm to be unable to normally load on the armrest plate in the backward inclined state, and the armrest plate cannot provide support for the arm, so that the user feels fatigue and discomfort, affecting work efficiency and health. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a linkage type office chair structure.

[0005] The utility model solves the technical problems thereof by adopting the technical scheme of:

[0006] A linkage type office chair structure, comprising a chair leg, a base, a seat, a backrest and an armrest, the base is installed at the top of the chair leg, the chair leg is fixed at the bottom of the seat through the base to form support, the rear part of the base is rotatably installed with a movable plate, the movable plate can be elastically swung up and down relative to the base, the bottom of the backrest is connected to the movable plate, the upper end of the armrest is connected to the side of the backrest, and the lower end of the armrest is connected to the movable plate to form support, and the backrest is inclined backward through the movable plate to link the armrest to be inclined backward together.

[0007] The movable plate is provided with a support rod extending horizontally to both sides, the support rod extends to the edge of the seat, the bottom end of the armrest is connected to the extension end of the support rod, and the armrest is supported by the support rod.

[0008] The utility model discloses a chair backrest, chair seat and chair leg are connected through the linkage of the lifting air rod, the fixed seat and the support seat, and the chair seat can be adjusted up and down through the linkage of the support seat and the fixed seat when the chair backrest is inclined back, thereby providing the stable support for the arm and improving the comfort of the office chair.

[0009] Further, the front end of the support seat and the fixed seat is equipped with elastic components, the elastic components are located in the front of the hinge point of the support seat and the fixed seat, the elastic components include compression springs and adjusting knobs, one end of the compression spring is against the fixed seat, the other end is against the adjusting knob, the inside of the adjusting knob is equipped with connecting rods, the connecting rods are connected on the support seat through the compression spring and the fixed seat, the compression spring drives the rear part of the support seat to open up to the fixed seat, when the support seat is driven by the movable plate and is folded to the fixed seat, the front end of the support seat drives the adjusting knob to compress the compression spring through the connecting rod, thereby providing elastic support.

[0010] Further, the connecting rod is screw-connected with the support seat, and the connecting rod can be driven to rotate when the adjusting knob is rotated, the compression spring is compressed and the elastic force is increased when the connecting rod is screwed inward into the support seat, and the compression spring is released and the elastic force is reduced when the connecting rod is screwed outward from the support seat.

[0011] In the utility model, the bottom of the chair backrest is fixed on the movable plate through the connecting plate, the connecting plate is L-shaped structure, the top of the connecting plate is fixedly connected with the chair backrest, the bottom of the connecting plate is fixedly connected with the movable plate, the movable plate is equipped with connecting grooves, the bottom of the connecting plate is assembled in the connecting grooves and is fixed through bolts, the support rods are transversely pressed on the top of the connecting plate after passing through the movable plate and form the limit.

[0012] The utility model has the advantages and beneficial effects that:

[0013] By setting the movable plate that can rotate up and down on the rear part of the base, setting the support rods that extend to both sides on the movable plate, connecting the upper end of the armrest with the side of the armrest and connecting the lower end with the end of the support rod to form the support, when the chair backrest is inclined back, the armrest can be inclined back through the linkage of the movable plate, so that the armrest can act in coordination with the action of the chair backrest, thereby providing stable support for the arm and ensuring the comfort of the office chair; meanwhile, the fixed seat and the support seat are set on the base, and the movable plate is movably connected between the two, when the chair backrest is inclined back, the chair seat can also be adjusted up through the linkage of the support seat and the fixed seat, thereby making the chair more suitable for the sitting posture of the human body and improving the comfort of the office chair. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model is further illustrated below in connection with the drawings and embodiments:

[0015] Fig. 1 It is a structural schematic view of the office chair in the embodiment;

[0016] Fig. 2 It is a bottom structure schematic view of the office chair in the embodiment;

[0017] Fig. 3 It is a structural schematic view of the base in the embodiment. DETAILED DESCRIPTION

[0018] To make the purpose, technical scheme and advantages of the utility model embodiments clearer, the technical scheme in the utility model embodiments will be described clearly and completely below in connection with the drawings in the utility model embodiments, and the utility model is not limited to the following embodiments.

[0019] It should be noted that if the utility model embodiments involve directional indications (such as up, down, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0020] In addition, if the utility model embodiments involve descriptions of "first" or "second", etc., the descriptions of "first" or "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled persons in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

[0021] For example, Figs. 1 to 3As shown, the embodiment discloses a linkage type office chair structure, which comprises a chair leg 1, a base 2, a seat 3, a back 4 and an armrest 5, the base 2 is installed on the top of the chair leg 1, the chair leg 1 is fixed on the bottom of the seat 3 through the base 2 to form a support, the rear part of the base 2 is rotatably installed with a movable plate 21, the movable plate 21 can be elastically swung up and down relative to the base 2, the bottom of the back 4 is fixed on the movable plate 21 through a connecting plate 41, the upper end of the armrest 5 is connected to the side of the back 4, and the lower end of the armrest 5 is connected to the movable plate 21 to form a support, when the back 4 is inclined backward, the armrest 5 is linked backward through the movable plate 21, so that the armrest 5 can act in coordination with the action of the back 4, stable support is provided, and the comfort of the office chair is ensured.

[0022] In the embodiment, the chair leg 1 is installed with a lifting air rod 11, the base 2 is rotatably installed on the top of the lifting air rod 11, the base 2 comprises a fixing seat 22 for being fixed on the lifting air rod 11 and a support seat 23 for being fixed on the bottom of the seat 3, the front part of the support seat 23 is hinged to the front part of the fixing seat 22, so that the rear part of the support seat 23 can be opened and closed up and down relative to the fixing seat 22, the front end of the movable plate 21 is hinged to the rear end of the fixing seat 22, and the rear end of the support seat 23 is hinged to the middle part of the movable plate 21, when the back 4 is inclined backward, the movable plate 21 drives the support seat 23 to be mutually folded relative to the fixing seat 22, and conversely, the seat 3 installed on the support seat 23 is rotated upward to make the front end be raised, therefore, when the back 4 is inclined backward, the seat 3 can also be adjusted upward through the linkage of the movable plate 21, so that the chair is more suitable for the sitting posture of human body, and the comfort of the office chair is improved.

[0023] Further, the front end of the support seat 23 and the fixing seat 22 is equipped with an elastic component 24, the elastic component 24 is located in the front part of the hinge joint point of the support seat 23 and the fixing seat 22, the elastic component 24 comprises a compression spring 241 and an adjusting knob 242, one end of the compression spring 241 is abutted against the fixing seat 22, and the other end is abutted against the adjusting knob 242, the inner side of the adjusting knob 242 is provided with a connecting rod 243, the connecting rod 243 passes through the compression spring 241 and the fixing seat 22 and is connected to the support seat 23, the compression spring 241 drives the rear part of the support seat 23 to be opened upward relative to the fixing seat 22, when the support seat 23 is driven by the movable plate 21 to be mutually folded relative to the fixing seat 22, the front end of the support seat 23 drives the adjusting knob 242 to compress the compression spring 241 through the connecting rod 243, so that the elastic reset function is provided for the support seat 23 and the movable plate 21, and the office chair can also be provided with certain comfort.

[0024] Further, the connecting rod 243 is screwed with the support base 23, and rotating the adjusting knob 242 can drive the connecting rod 243 to rotate, so as to adjust the length of the connecting rod 243 screwed into the support base 23, and when the connecting rod 243 is screwed into the support base 23, the compression spring 241 can be compressed to play a pre-tightening function and improve the elastic force, and when the connecting rod 243 is screwed out of the support base 23, the compression spring 241 can be released to reduce the elastic force, so that the elasticity can be adjusted by rotating the adjusting knob 242, so as to adapt to people with different weights and improve the practicability.

[0025] In the embodiment, the movable plate 21 is provided with support rods 211 extending horizontally to both sides, and specifically extending to the edges of the seat 3, and the bottom end of the armrest 5 is connected to the extended end of the support rod 211, so that the armrest 5 is supported by the support rod 211, thereby saving the installation cost.

[0026] Further, the connecting plate 41 is in L-shaped structure, the top of the connecting plate 41 is fixedly connected with the back 4, and the bottom of the connecting plate 41 is fixedly connected with the movable plate 21, the movable plate 21 is provided with a connecting groove 212, and the bottom of the connecting plate 41 is assembled in the connecting groove 212 and fixed by bolts, in addition, the support rod 211 passes through the movable plate 21 transversely and abuts against the top of the connecting plate 41 to form a limit, thereby improving the connection stability.

[0027] The above described in the specification of the present application is only an example of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the content of the specification of the present application or exceed the scope defined by the claims, and should belong to the protection scope of the present application.

Claims

1. A linkage office chair structure comprising a chair leg (1), a base (2), a seat (3), a back (4) and an armrest (5), the base (2) is installed on the top of the chair leg (1), the chair leg (1) is fixed on the bottom of the seat (3) through the base (2) to form a support, characterized in that: The back part of the base (2) is rotatably mounted with a movable plate (21), the movable plate (21) can be elastically swung up and down relative to the base (2), the bottom of the backrest (4) is connected to the movable plate (21), the upper end of the armrest (5) is connected to the side of the backrest (4), and the lower end of the armrest (5) is connected to the movable plate (21) to form a support, when the backrest (4) is inclined backward, the armrest (5) is linked by the movable plate (21) to be inclined backward together. The movable plate (21) is provided with a support rod (211) extending horizontally to both sides, the support rod (211) extends to be flush with the edges of the seat (3), and the bottom end of the armrest (5) is connected to the extension end of the support rod (211), so that the armrest (5) forms a support through the support rod (211).

2. A linkage mechanism for an office chair according to claim 1, wherein: The chair leg (1) is mounted with a lifting air rod (11), the base (2) is rotatably mounted on the top of the lifting air rod (11), the base (2) includes a fixed seat (22) for being fixed on the lifting air rod (11) and a support seat (23) for being fixed on the bottom of the seat (3), the front part of the support seat (23) is hinged to the front part of the fixed seat (22), the rear part of the support seat (23) can be opened and closed up and down relative to the fixed seat (22), the front end of the movable plate (21) is hinged to the rear end of the fixed seat (22), and the rear end of the support seat (23) is hinged to the middle part of the movable plate (21), when the backrest (4) is inclined backward, the seat (3) is adjusted upward by the movable plate (21).

3. A linkage mechanism for an office chair according to claim 2, wherein: The front end of the support seat (23) and the fixed seat (22) is assembled with an elastic component (24), the elastic component (24) is located in the front part of the hinge point of the support seat (23) and the fixed seat (22), the elastic component (24) includes a compression spring (241) and an adjusting knob (242), one end of the compression spring (241) abuts against the fixed seat (22), and the other end abuts against the adjusting knob (242), the inner side of the adjusting knob (242) is provided with a connecting rod (243), the connecting rod (243) passes through the compression spring (241) and the fixed seat (22) and is connected to the support seat (23), the compression spring (241) drives the rear part of the support seat (23) to be opened upward relative to the fixed seat (22), when the support seat (23) is driven by the movable plate (21) to be folded relative to the fixed seat (22), the front end of the support seat (23) drives the adjusting knob (242) to compress the compression spring (241) through the connecting rod (243), so as to provide elastic support.

4. A linkage mechanism for an office chair according to claim 3, wherein: The connecting rod (243) is threadedly connected with the support seat (23), when the adjusting knob (242) is rotated, the connecting rod (243) can be driven to rotate, when the connecting rod (243) is rotated inward into the support seat (23), the compression spring (241) is compressed to increase the elastic force, and when the connecting rod (243) is rotated outward out of the support seat (23), the compression spring (241) is released to reduce the elastic force.

5. The linkage mechanism for an office chair according to claim 1, wherein: The bottom of the chair back (4) is fixed on the movable plate (21) through a connecting plate (41), the connecting plate (41) is of L-shaped structure, the top of the connecting plate (41) is fixedly connected with the chair back (4), the bottom of the connecting plate (41) is fixedly connected with the movable plate (21), the movable plate (21) is provided with a connecting groove (212), the bottom of the connecting plate (41) is assembled in the connecting groove (212) and fixed through bolts, and the supporting rod (211) is transversely arranged through the movable plate (21) and abuts against the top of the connecting plate (41) to form a limit.

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