CN219166019U

CN219166019U - Top waist linkage device and office chair comprising same

Info

Publication number: CN219166019U
Application number: CN202222311785.7U
Authority: CN
Inventors: 乔国志
Original assignee: Zhejiang Qianmen Technology Co ltd
Current assignee: Zhejiang Qianmen Technology Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-06-13
Anticipated expiration: 2032-08-26

Abstract

The utility model relates to a waist pushing linkage device and an office chair comprising the same, which comprises a waist pushing device and a linkage device, wherein the linkage device is an extension of the waist pushing device and is used for linkage movement among all accessories of the waist pushing device, and the structure design is simplified. The office chair comprising the waist-supporting linkage device finally realizes the obvious waist-supporting effect of the office chair in normal sitting posture, the waist-supporting device is parallel to the back board when lying down, and the waist-supporting device is hidden in the internal structural design, so that the office chair is attractive and elegant, and the function of protecting the lumbar vertebra is achieved.

Description

Top waist linkage device and office chair comprising same

Technical Field

The utility model relates to the technical field of office furniture manufacturing, in particular to a top waist linkage device and an office chair comprising the same.

Background

Office chairs are various chairs equipped for convenience in daily work and social activities, and most chairs are currently used in office places. Office chairs are also developed and used gradually from the most original ones as long as sitting functions can be completed, along with the change of demands of consumer groups and markets. The office chair has the basic functions of height adjustment and flexible 360-degree random rotation, and then has the functions of lying, leg rest and the like, which are all functions of the existing office chair. All office chairs are used for realizing the sitting function, the waist is the least suitable after sitting for a long time, the internal structure which supports the body and eliminates fatigue tension, and particularly can be hidden in the backrest of the office chair is provided, and the lumbar function design with obvious lumbar supporting effect is required to be innovated by current research and development personnel.

The utility model disclosed in application number CN202122693080.1 relates to an office chair lumbar support lifting adjusting structure, which comprises a cushion, wherein a backrest is fixedly arranged on one side of the bottom of the cushion, a threaded rod is arranged in the backrest in a rotating manner, a movable plate is connected to the outer side of the threaded rod in a threaded manner, one side of the movable plate extends to the outer side of the backrest and is fixedly provided with a lumbar support, a worm wheel is fixedly arranged on the outer side of the threaded rod, a worm is arranged in the backrest in a rotating manner, the worm is meshed with the worm wheel in a mutually manner, and a screw rod is arranged in the bottom of the inner side of the backrest in a rotating manner. The structure is reasonable in design, the threaded rod rotates, so that the movable plate moves in the vertical direction, the lumbar support can be driven to synchronously move, the height adjusting function of the lumbar support is realized, and the reliability is high, but the lumbar support is designed outside the backrest, and the optimal invisible structural design is not achieved yet.

The utility model disclosed in application number CN201820483368.1 is a multifunctional chair, comprising a chair seat and a chair back frame, wherein the chair back frame is provided with a mesh cloth, the back of the bottom of the chair back frame is provided with a support frame and a flexible support body, a gap is reserved between the support frame and the mesh cloth right in front of the support frame, and the thickness of the support body is smaller than the interval between the support frame and the mesh cloth; when the waist rest is used, the supporting body is put into the gap from top to bottom and is movably clamped in the gap by virtue of friction force between the supporting body and the supporting frame and the mesh cloth; and when the support body needs to be taken down, the support body is pulled out of the gap upwards. The fixing mode of abandoning conventional office chair waist and leaning on adopts the extrusion type fixing mode of no third party connecting element, and although this supporter has improved the flexibility of use and the variety of product greatly, but the top waist effect of this supporter is unobvious, and the office chair type limitation of using is less.

Disclosure of Invention

Aiming at the problems, the utility model provides the waist pushing linkage device and the office chair comprising the waist pushing linkage device, which have the advantages of obvious waist pushing effect, simple structural design and hidden inside, achieve the function of protecting the lumbar vertebra and effectively solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a waist-pushing linkage device comprises a waist-pushing device and a linkage device. The waist propping device consists of a first fixing piece, a second fixing piece, a first locking piece, a second locking piece, a sliding fixing piece, an L-shaped fixing piece, a connecting piece, a sliding piece and a waist propping plate. The left and right sides of the first fixing piece are fixed with the upper ends of the first locking piece and the second locking piece; the second fixing piece is fixed with the lower ends of the first locking piece and the second locking piece in the left-right mode. The sliding fixing piece is attached to and fixed with the first locking piece. The L-shaped fixing piece is fixed with the lower end of the sliding piece and used for fixing the waist propping plate. One end of the connecting piece is fixed at the lower end of the sliding fixing piece, and the other end of the connecting piece is locked at the middle lower end of the sliding piece. And a sliding rail is arranged at the upper part of the sliding fixing piece and is used for linking the cross rod to slide up and down. The linkage device consists of a linkage cross rod, a linkage vertical rod, a shaft pin, a connecting iron sheet and an L-shaped welding sheet. The left end and the right end of the linkage cross rod are fixed at the left end and the right end of the upper part of the sliding piece. The upper end of the linkage vertical rod is fixed at the middle position of the linkage cross rod, and the lower end of the linkage vertical rod is mutually fixed with the shaft pin. The lower end of the shaft pin is fixed with the connecting iron sheet, and the lower end of the connecting iron sheet is fixed with the L-shaped soldering lug through a screw rod. The lower end of the L-shaped soldering lug is fixed with the chassis end. The waist ejection device and the linkage device form a waist ejection linkage device.

As a preferable mode of the above technical scheme, the rear end of the waist top plate is fixed by a fixing block, and the fixing block is respectively arranged at the left side and the right side.

Preferably, the first fixing member is parallel to the second fixing member, and the first locking member is parallel to the second locking member.

The utility model independently develops a waist-pushing linkage device, which comprises a waist-pushing device and a linkage device. The waist propping device and the linkage device are matched with each other for use, when a sitting person is in a normal sitting posture, the waist propping device is in an unoperated state, and the waist propping effect is obvious. The linkage cross rod in the linkage device is positioned at the lowest end of the sliding track in the sliding fixing piece, so that the sliding piece is in an ejection state, and finally the waist ejection plate is in an obvious waist ejection state; when the sitting person reclines, the sliding piece slides from the sliding rail in the sliding fixing piece to the sliding rail, and then the linkage cross bar and the linkage vertical bar are driven to operate. And then the linkage device fittings fixed at the bottom of the seat plate are in linkage motion, and the linkage device fittings comprise the shaft pin to drive the connecting iron sheet and the L-shaped welding sheet. The linkage is an extension of the lumbar support for linkage between the fittings of the lumbar support. The waist pushing linkage device is fixed on the backboard and the seat board, leather sleeves are sewn outside, the waist pushing linkage device is hidden inside, the obvious waist pushing effect of the office chair in normal sitting posture is finally achieved, the structural design is simplified, and the waist pushing device is hidden in the internal structural design, so that the function of protecting the lumbar vertebra is achieved.

The utility model also provides an office chair, which comprises the waist-pushing linkage device, wherein the waist-pushing linkage device is fixed at the front end of the backboard, and the linkage device is fixed at the lower end of the seat board.

As the optimization of the technical scheme, the armrest is arranged between the backrest plate and the seat plate, two ends of the armrest are fixed through a plurality of connecting blocks, the bottom of the backrest plate is provided with the chassis, the upper part of the air rod is fixed on the chassis, and the lower part of the air rod is fixed on the chair legs.

As the preferable mode of the technical scheme, leather sleeves are sewn outside the back board, the seat board and the armrests.

As the preferable mode of the technical scheme, the armrests and the chair legs can be selected in different modes.

The utility model has the following beneficial effects:

the utility model adopts an independently developed waist-pushing linkage device, which comprises a waist-pushing device and a linkage device, wherein the linkage device is an extension of the waist-pushing device and is used for linkage among all accessories of the waist-pushing device, and the structure design is simplified. The office chair comprising the waist-supporting linkage device finally realizes the obvious waist-supporting effect of the office chair in normal sitting posture, the waist-supporting device is parallel to the back board when lying down, and the waist-supporting device is hidden in the internal structural design, so that the office chair is attractive and elegant, and the function of protecting the lumbar vertebra is achieved.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a block diagram of a lumbar support in a lumbar support linkage of the present utility model;

FIG. 2 is a block diagram of a linkage in a top-waist linkage of the present utility model;

FIG. 3 is a perspective view of an office chair with an in-situ sitting posture comprising a lumbar linkage according to the present utility model;

FIG. 4 is a left side view of an office chair with an in-situ sitting position incorporating a lumbar support linkage according to the present utility model;

FIG. 5 is a perspective view of an office chair with a lumbar linkage in an internal reclined position of sitting according to the present utility model;

FIG. 6 is a left view of the internal leaning and sitting posture of an office chair incorporating a lumbar linkage of the present utility model;

figure 7 is a block diagram of a finished office chair incorporating a lumbar linkage of the present utility model.

In the figure, the waist supporting device comprises a 1-waist supporting device, a 2-linkage device, a 3-chassis, a 4-backboard, a 5-seat board, a 6-handrail, a 7-air bar, an 8-chair leg, a 9-leather sheath, a 101-first fixing piece, a 102-second fixing piece, a 103-first locking piece, a 104-second locking piece, a 105-sliding fixing piece, a 106-L-shaped fixing piece, a 107-connecting piece, a 108-sliding piece, a 109-waist supporting board, a 110-fixing piece, a 201-linkage cross bar, a 202-linkage vertical bar, a 203-shaft pin, a 204-connecting iron sheet, a 205-L-shaped welding sheet, a 206-screw rod and a 601-connecting block.

Detailed Description

This detailed description is merely illustrative of the utility model and is not intended to be limiting. Any modification made by a person skilled in the art after having read the description of the present utility model will be protected by the patent laws as long as they are within the scope of the appended claims.

As shown in fig. 1-7, a waist-pushing linkage device and an office chair comprising the waist-pushing linkage device comprise a waist-pushing device 1 and a linkage device 2. The waist ejection device 1 is composed of a first fixing piece 101, a second fixing piece 102, a first locking piece 103, a second locking piece 104, a sliding fixing piece 105, an L-shaped fixing piece 106, a connecting piece 107, a sliding piece 108 and a waist ejection plate 109. The left and right of the first fixing piece 101 are fixed with the upper ends of the first locking piece 103 and the second locking piece 104; the second fixing member 102 is fixed to the lower ends of the first locking member 103 and the second locking member 104. The sliding fixing member 105 is attached to the first locking member 103. The L-shaped fixing member 106 is fixed to the lower end of the sliding member 108, and is used for fixing the top waist plate 109. The connecting member 107 has one end fixed to the lower end of the slide fixing member 105 and one end locked to the middle lower end of the sliding member 108. The sliding rail 105-1 is provided at the upper part of the sliding fixing member 105 for sliding the linkage cross bar 201 up and down. The linkage device 2 consists of a linkage cross bar 201, a linkage vertical bar 202, a shaft pin 203, a connecting iron sheet 204 and an L-shaped welding sheet 205. The interlocking cross bar 201 is fixed at the left and right ends of the upper part of the runner 108. The upper end of the linkage vertical rod 202 is fixed at the middle position of the linkage horizontal rod 201, and the lower end is mutually fixed with the shaft pin 203. The lower end of the shaft pin 203 is fixed with the connecting iron sheet 204, and the lower end of the connecting iron sheet 204 is fixed with the L-shaped soldering lug 205 through a screw 206. The lower end of the L-shaped soldering lug 205 is fixed with the end of the chassis 3. The waist supporting device 1 and the linkage device 2 form a waist supporting linkage device. The rear end of the waist top plate 109 is fixed by a fixing block 110, and the fixing block 110 is respectively arranged at the left side and the right side. The first fixing member 101 is parallel to the second fixing member 102, and the first locking member 103 is parallel to the second locking member 104. The office chair further comprises the waist-pushing linkage device, wherein the waist-pushing linkage device 1 is fixed at the front end of the backboard 4, and the linkage device 2 is fixed at the lower end of the seat board 5. An armrest 6 is arranged between the back board 4 and the seat board 5, two ends of the armrest 6 are fixed through a plurality of connecting blocks 601, a chassis 3 is arranged at the bottom of the back board 4, the upper part of an air rod 7 is fixed on the chassis 3, and the lower part of the air rod 7 is fixed on chair legs 8. Leather sleeves 9 are sewn outside the back board 4, the seat board 5 and the armrests 6. The armrests 6 and the chair legs 8 can be selected in different modes.

Claims

1. A top waist linkage, characterized in that: comprises a waist propping device (1) and a linkage device (2); the waist propping device (1) is composed of a first fixing piece (101), a second fixing piece (102), a first locking piece (103), a second locking piece (104), a sliding fixing piece (105), an L-shaped fixing piece (106), a connecting piece (107), a sliding piece (108) and a waist propping plate (109); the left and right sides of the first fixing piece (101) are fixed with the upper ends of the first locking piece (103) and the second locking piece (104); the left and right sides of the second fixing piece (102) are fixed with the lower ends of the first locking piece (103) and the second locking piece (104); the sliding fixing piece (105) is attached and fixed with the first locking piece (103); the L-shaped fixing piece (106) is fixed with the lower end of the sliding piece (108) and is used for fixing the top waist plate (109); one end of the connecting piece (107) is fixed at the lower end of the sliding fixing piece (105), and the other end is locked at the middle lower end of the sliding piece (108); the upper part of the sliding fixing piece (105) is provided with a sliding track (105-1) for linking the transverse rod (201) to slide up and down; the linkage device (2) consists of a linkage cross bar (201), a linkage vertical bar (202), a shaft pin (203), a connecting iron sheet (204) and an L-shaped welding sheet (205); the left and right ends of the linkage cross rod (201) are fixed at the left and right ends of the upper part of the sliding piece (108); the upper end of the linkage vertical rod (202) is fixed at the middle position of the linkage horizontal rod (201), and the lower end of the linkage vertical rod is mutually fixed with the shaft pin (203); the lower end of the shaft pin (203) is fixed with the connecting iron sheet (204), and the lower end of the connecting iron sheet (204) is fixed with the L-shaped soldering lug (205) through a screw rod (206); the lower end of the L-shaped soldering lug (205) is fixed with the end of the chassis (3); the waist supporting device (1) and the linkage device (2) form a waist supporting linkage device.

2. A top lumbar linkage according to claim 1, wherein: the rear end of the waist supporting plate (109) is fixed by a fixing block (110), and the left side and the right side of the fixing block (110) are respectively provided with a plurality of fixing blocks.

3. A top lumbar linkage according to claim 1, wherein: the first fixing piece (101) is parallel to the second fixing piece (102), and the first locking piece (103) is parallel to the second locking piece (104).

4. An office chair comprising the top lumbar linkage of any one of claims 1-3, wherein: the waist jacking device (1) is fixed at the front end of the back board (4), and the linkage device (2) is fixed at the lower end of the seat board (5).

5. An office chair according to claim 4, wherein: there is handrail (6) in the middle of back board (4) and bedplate (5), handrail (6) both ends are fixed through a plurality of connecting block (601), back board (4) bottom has chassis (3), and gas pole (7) upper portion is fixed on chassis (3), and the lower part is fixed on chair foot (8).

6. An office chair according to claim 4, wherein: leather sleeves (9) are sewn outside the back board (4), the seat board (5) and the handrails (6).

7. An office chair according to claim 4, wherein: the armrests 6 and the chair legs 8 can be selected in different modes.