CN216316617U

CN216316617U - Office chair waist rest lifting adjusting structure

Info

Publication number: CN216316617U
Application number: CN202122693080.1U
Authority: CN
Inventors: 齐洪亮
Original assignee: Zhejiang Anji Sheng'an Furniture Co ltd
Current assignee: Zhejiang Anji Sheng'an Furniture Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-19
Anticipated expiration: 2031-11-05

Abstract

The utility model belongs to the technical field of office chairs, and particularly relates to a waist rest lifting adjusting structure of an office chair, which aims at solving the problem that most of the waist rests arranged on the existing office chairs cannot meet the height adjusting function, so that the using requirements of users with different heights cannot be met. The utility model has reasonable structural design, the threaded rod rotates, so that the movable plate can move in the vertical direction, the waist rest can be driven to move synchronously, the function of adjusting the height of the waist rest is realized, and the reliability is high.

Description

Office chair waist rest lifting adjusting structure

Technical Field

The utility model relates to the technical field of office chairs, in particular to a waist rest lifting adjusting structure of an office chair.

Background

Office chairs play an increasingly important role in the office field, the comfort of the office chairs also becomes an important index for selecting office furniture, a key part influencing the comfort of the office chairs is the waist support position of the swivel chair, and office staff can easily cause back discomfort after keeping a sitting posture for a long time.

Most of the waist supports in the existing office chairs cannot meet the height adjusting function, so that the shortcoming that the waist supports cannot meet the use requirements of users with different heights is caused, and therefore a lifting adjusting structure for the waist supports of the office chairs is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defect that most of waist rests carried by the existing office chairs cannot meet the height adjusting function, so that the waist rests cannot meet the use requirements of users with different heights, and provides a lifting adjusting structure for the waist rests of the office chairs.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a waist rest lifting adjusting structure of an office chair comprises a cushion, wherein a backrest is fixedly arranged on one side of the bottom of the cushion, a threaded rod is rotatably arranged in the backrest, a moving plate is connected with the outer side of the threaded rod in a threaded manner, one side of the moving plate extends to the outer side of the backrest and is fixedly provided with a waist rest, a worm wheel is fixedly arranged on the outer side of the threaded rod, a worm is rotatably arranged inside the backrest and is meshed with the worm wheel, a screw rod is rotatably arranged at the bottom of the inner side of the backrest, a threaded cap is connected with the outer side of the screw rod through threads, an inserted rod is fixedly arranged at the top of the threaded cap, a plurality of grooves are arranged on the outer side of the worm, the outer side of the inserted bar is movably abutted with the inner side of the corresponding groove, the utility model discloses a cushion, including back, inserted bar, cushion, fixed mounting has the cavity board on the inner wall of back fixed mounting, the outside of inserted bar and the inboard activity butt of cavity board, the equal fixed mounting in both sides has the handrail around the cushion.

Preferably, one end of the worm extends to the outer side of the backrest, and the knob is fixedly mounted, so that the worm can be conveniently and manually rotated, and the function of adjusting the waist support is realized.

Preferably, the bottom of lead screw extends to the outside of back, and fixed mounting has the runner for more laborsaving when artifical rotation lead screw.

Preferably, a fixed rod is fixedly mounted on the inner wall of the backrest, and the outer side of the fixed rod is in sliding connection with the inner side of the moving plate, so that a certain guiding effect is provided for the movement of the moving plate.

Preferably, a guide rod is fixedly mounted on the inner wall of the backrest, and the outer side of the guide rod is in sliding connection with the inner side of the threaded cap to provide a guide effect for the movement of the threaded cap.

Preferably, a through hole is formed in the outer side of the backrest, and the outer side of the moving plate is movably mounted on the inner side of the through hole to provide a moving range for the moving of the moving plate.

According to the lifting adjusting structure for the waist rest of the office chair, the screw rod rotates to drive the insertion rod to move upwards, so that the top end of the insertion rod is inserted into the corresponding groove, a worm can be limited, the worm is prevented from rotating automatically, and the stability of the worm is improved;

the utility model has reasonable structural design, the threaded rod rotates, so that the movable plate can move in the vertical direction, the waist rest can be driven to move synchronously, the function of adjusting the height of the waist rest is realized, and the reliability is high.

Drawings

Fig. 1 is a schematic structural view of a waist rest lifting adjusting structure of an office chair according to the present invention;

FIG. 2 is a schematic cross-sectional structural view of a waist rest lifting adjusting structure of an office chair according to the present invention;

FIG. 3 is a schematic structural view of a portion A of an office chair lumbar support lifting adjusting structure according to the present invention;

fig. 4 is a schematic structural diagram of a part B of an office chair lumbar support lifting adjusting structure according to the present invention.

In the figure: 1. a cushion; 2. a backrest; 3. a threaded rod; 4. moving the plate; 5. fixing the rod; 6. a waist support; 7. a worm gear; 8. a worm; 9. a groove; 10. a knob; 11. a screw rod; 12. a threaded cap; 13. a guide bar; 14. inserting a rod; 15. a hollow plate; 16. a rotating wheel; 17. a handrail.

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.

Referring to fig. 1-4, an office chair waist rest lifting adjusting structure comprises a cushion 1, a backrest 2 is fixedly installed on one side of the bottom of the cushion 1, a threaded rod 3 is installed inside the backrest 2 in a rotating mode, a moving plate 4 is connected to the outer side of the threaded rod 3 in a threaded mode, one side of the moving plate 4 extends to the outer side of the backrest 2 and is fixedly installed with a waist rest 6, a worm wheel 7 is fixedly installed on the outer side of the threaded rod 3, a worm 8 is installed inside the backrest 2 in a rotating mode, the worm 8 is meshed with the worm wheel 7, a lead screw 11 is installed on the bottom of the inner side of the backrest 2 in a rotating mode, a threaded cap 12 is connected to the outer side of the lead screw 11 in a threaded mode, an inserting rod 14 is fixedly installed on the top of the threaded cap 12, a plurality of grooves 9 are formed in the outer side of the worm 8, the outer side of the inserting rod 14 is movably abutted to the inner side of the corresponding groove 9, a hollow plate 15 is fixedly installed on the inner wall of the backrest 2, and the outer side of the inserting rod 14 is movably abutted to the inner side of the hollow plate 15, the front and back sides of the seat cushion 1 are fixedly provided with armrests 17.

In the utility model, one end of the worm 8 extends to the outer side of the backrest 2, and the knob 10 is fixedly installed, so that the worm 8 can be conveniently rotated manually, and the adjusting function of the waist support 6 is realized.

In the utility model, the bottom end of the screw rod 11 extends to the outer side of the backrest 2, and the rotating wheel 16 is fixedly installed, so that labor is saved when the screw rod 11 is manually rotated.

In the utility model, the inner wall of the backrest 2 is fixedly provided with the fixed rod 5, and the outer side of the fixed rod 5 is in sliding connection with the inner side of the moving plate 4, thereby providing a certain guiding function for the movement of the moving plate 4.

In the utility model, the guide rod 13 is fixedly arranged on the inner wall of the backrest 2, and the outer side of the guide rod 13 is connected with the inner side of the screw cap 12 in a sliding way, thereby providing a guide function for the movement of the screw cap 12.

In the utility model, the outer side of the backrest 2 is provided with a through hole, and the outer side of the moving plate 4 is movably arranged at the inner side of the through hole to provide a motion range for the movement of the moving plate 4.

In the utility model, when the height of the waist support 6 is required to be adjusted in use, firstly, the rotating wheel 16 is manually rotated to drive the screw rod 11 to rotate, so that the threaded cap 12 moves downwards, so that the top end of the inserted rod 14 can move out of the inner part of the groove 9 corresponding to the worm 8, the limitation on the worm 8 is removed, then, the knob 10 is manually rotated to drive the worm 8 to rotate, the worm 8 drives the worm wheel 7 to rotate, the threaded rod 3 rotates due to the fixed connection between the worm wheel 7 and the threaded rod 3, so that the moving plate 4 moves vertically, the waist support 6 can be driven to move synchronously, the height adjustment function is realized, when the waist support 6 moves to a proper use position, the rotating wheel 16 is rotated to drive the screw rod 11 to rotate, the inserted rod 14 moves upwards, so that the top end of the inserted rod 14 is inserted in the corresponding groove 9, the effect of injecing worm 8 can be played, the condition that the rotation takes place for worm 8 is prevented, improve the stability of worm 8.

Claims

1. The utility model provides an office chair waist is by lift adjustment structure, includes cushion (1), its characterized in that, bottom one side fixed mounting of cushion (1) has back (2), and threaded rod (3) are installed in the inside rotation of back (2), and the outside threaded connection of threaded rod (3) has movable plate (4), and one side of movable plate (4) extends to the outside of back (2) and fixed mounting has waist back (6), and the outside fixed mounting of threaded rod (3) has worm wheel (7), worm (8) are installed in the inside rotation of back (2), worm (8) and worm wheel (7) intermeshing, the inboard bottom of back (2) is rotated and is installed lead screw (11), and the outside threaded connection of lead screw (11) has screw cap (12), and the top fixed mounting of screw cap (12) has inserted bar (14), a plurality of recesses (9) have been seted up in the outside of worm (8), the outside of inserted bar (14) and the inboard activity butt of recess (9) that corresponds, fixed mounting has well hollow plate (15) on the inner wall of back (2), the outside of inserted bar (14) and the inboard activity butt of well hollow plate (15), the equal fixed mounting in both sides has handrail (17) around cushion (1).

2. The waist rest lifting adjusting structure of the office chair is characterized in that one end of the worm (8) extends to the outer side of the backrest (2) and a knob (10) is fixedly installed.

3. The waist rest lifting adjusting structure of the office chair as claimed in claim 1, wherein the bottom end of the screw rod (11) extends to the outer side of the backrest (2) and is fixedly provided with a rotating wheel (16).

4. The waist rest lifting adjusting structure of the office chair as claimed in claim 1, wherein the inner wall of the backrest (2) is fixedly provided with a fixed rod (5), and the outer side of the fixed rod (5) is slidably connected with the inner side of the movable plate (4).

5. The lift adjusting structure for the waist rest of the office chair is characterized in that a guide rod (13) is fixedly arranged on the inner wall of the backrest (2), and the outer side of the guide rod (13) is in sliding connection with the inner side of the threaded cap (12).

6. The lifting adjusting structure for the waist support of the office chair as claimed in claim 1, wherein a through hole is formed on the outer side of the backrest (2), and the outer side of the moving plate (4) is movably mounted on the inner side of the through hole.