CN211632487U

CN211632487U - Lifting mechanism for back of swivel chair

Info

Publication number: CN211632487U
Application number: CN201921990276.3U
Authority: CN
Inventors: 张城; 杨进; 王凯; 谢涛
Original assignee: Anji Zhengyu Furniture Co ltd
Current assignee: Anji Zhengyu Furniture Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-10-09
Anticipated expiration: 2029-11-18

Abstract

The utility model relates to a swivel chair back technical field discloses a swivel chair back elevating system, including the cushion, the lower part of cushion is equipped with the layer board, and the lower surface connection of layer board rotates the upper portion of seat, rotates the lower part of seat and rotates the connection bottom plate, the right side of cushion is equipped with the slip box, and the lower extreme of connecting the second lead screw is rotated to the bottom of slip box, the middle part threaded connection sliding plate of second lead screw, and both sides sliding connection sets up in the spout middle part of both sides around the slip box around the sliding plate, the left side of sliding plate is equipped with the connecting plate, and the fixed plate is connected in the left side of connecting plate, and the back is connected in the. The utility model is suitable for a swivel chair back elevating system sets up the slip case through the right side at the cushion to the inside second lead screw and the sliding plate that are provided with threaded connection of slip case, thereby realize reciprocating of back, and second lead screw and sliding plate all hide inside the slip case, have guaranteed the security of device, whole device simple structure adjusts the convenience simultaneously.

Description

Lifting mechanism for back of swivel chair

Technical Field

The utility model relates to a swivel chair back technical field specifically is a swivel chair back elevating system.

Background

The rotatable chair is one of seats which are very popular with people since the beginning of development, and is widely used in offices, meeting rooms, libraries, hotels and families. In the prior art, the height and the front and back positions between the backrest and the seat cushion of the swivel chair are basically in a fixed state, so that the swivel chair is difficult to be suitable for people with different physical constitutions.

Chinese patent (publication No. CN 209202482U) discloses a swivel chair backrest lifting mechanism, which comprises a fixed seat frame and a fixed column connected to the rear side of the fixed seat frame, and further comprises a backrest supporting column, wherein a fitting hole is formed at the lower end of the backrest supporting column, the fixed column is inserted into the fitting hole, a plurality of adjusting holes are formed in the hole wall of the fitting hole, the adjusting holes are axially spaced along the fitting hole, a U-shaped elastic locking piece is inserted into one end of the fixed column inserted into the fitting hole, one end of the U-shaped elastic locking piece is inserted into any one of the adjusting holes, and an adjusting guide mechanism is arranged between one end of the fixed column inserted into the fitting hole and the backrest supporting column.

Disclosure of Invention

The utility model provides a swivel chair back elevating system has solved the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a swivel chair back elevating system, includes the cushion, and the lower part of cushion is equipped with the layer board, and the lower surface connection of layer board rotates the upper portion of seat, rotates the lower part of seat and rotates and connect the bottom plate, the right side of cushion is equipped with the slip box, and the bottom of slip box rotates the lower extreme of connecting the second lead screw, the middle part threaded connection sliding plate of second lead screw, and both sides sliding connection sets up in the spout middle part of both sides around the slip box around the sliding plate, the left side of sliding plate is equipped with the connecting plate, and the fixed plate is connected in the left side of connecting plate, and the.

As an optimized technical scheme of the utility model, the connection back can be dismantled to the fixed plate.

As an optimized technical scheme of the utility model, the inside hollow structure that is of slide box.

As an optimized technical scheme of the utility model, the top of connecting the slip box is rotated on the upper portion of second lead screw.

As an optimal technical scheme of the utility model, the top of second lead screw is equipped with the runner.

As a preferred technical scheme of the utility model, the lower surface left and right sides of cushion is equipped with the guide bar, the left and right sides of guide bar middle part sliding connection layer board.

As a preferred technical scheme of the utility model, the lower surface middle part of cushion is equipped with the bearing frame, and the bearing frame rotates the both sides of connecting first lead screw, the middle part of the middle part threaded connection slider of first lead screw, and the upper end of joint support pole is rotated to the lower part of slider, and the upper surface of joint support board is rotated to the lower extreme of bracing piece.

The utility model discloses have following useful part:

the utility model is suitable for a swivel chair back elevating system sets up the slip case through the right side at the cushion to the inside second lead screw and the sliding plate that are provided with threaded connection of slip case, thereby realize reciprocating of back, and second lead screw and sliding plate all hide inside the slip case, have guaranteed the security of device, whole device simple structure simultaneously, and it is convenient to adjust, suitable using widely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a lifting mechanism of a swivel chair backrest.

Fig. 2 is a front view of a swivel chair back lift mechanism.

Fig. 3 is a schematic view showing a structure of a slide box of a reclining mechanism of a swivel seat back without a back surface guard.

In the figure: 1. a base plate; 2. a rotating seat; 3. a guide bar; 4. a support plate; 5. a bearing seat; 6. a first lead screw; 7. a slider; 8. a cushion; 9. a slide box; 10. a backrest; 11. a fixing plate; 12. a support bar; 13. a second lead screw; 14. a sliding plate; 15. a connecting plate; 16. a chute; 17. a rotating wheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Referring to fig. 1-3, a backrest lifting mechanism of a swivel chair comprises a seat cushion 8, a support plate 4 is arranged at the lower part of the seat cushion 8, the lower surface of the support plate 4 is connected with the upper part of a swivel seat 2, the lower part of the swivel seat 2 is rotatably connected with a bottom plate 1, a sliding box 9 is arranged on the right side of the cushion 8, the interior of the sliding box 9 is of a hollow structure, the bottom of the sliding box 9 is rotatably connected with the lower end of a second screw rod 13, the middle part of the second screw rod 13 is in threaded connection with a sliding plate 14, the upper part of the second screw rod 13 is rotatably connected with the top of the sliding box 9, the top end of the second screw rod 13 is provided with a rotating wheel 17, the front side and the rear side of the sliding plate 14 are slidably connected with the middle parts of sliding grooves 16 arranged on the front side and the, the left side of the sliding plate 14 is provided with a connecting plate 15, the left side of the connecting plate 15 is connected with a fixed plate 11, the left side of the fixed plate 11 is connected with a backrest 10, and the fixed plate 11 is detachably connected with the backrest 10.

Example two

Referring to fig. 1, the other contents of the present embodiment are the same as those of the first embodiment, except that: the lower surface left and right sides of cushion 8 is equipped with guide bar 3, and the left and right sides of 3 middle part sliding connection layer boards 4 of guide bar is equipped with bearing frame 5 in the middle part of the lower surface of cushion 8, and bearing frame 5 rotates the both sides of connecting first lead screw 6, and the middle part of the middle part threaded connection slider 7 of first lead screw 6, the upper end of connecting support rod 12 is rotated to the lower part of slider 7, and the lower extreme of bracing piece 12 rotates the upper surface of connecting layer boards 4. Because everybody's height is different, for the convenience of the user of different heights all can be comfortable sit on this device, set up first lead screw 6 in the bottom of device, through 6 adjust the slider 7 of first lead screw position about to promote layer board 4 through bracing piece 12 and remove for cushion 8, thereby realize the regulation of 8 heights of cushion.

The utility model discloses in the implementation, put bottom plate 1 of this device on subaerial down, whether the user sits and feels the height that receives back 10 on cushion 8 and meets the requirements, when the user feels the height of back 10 and does not accord, can rotate runner 17, runner 17 drives second lead screw 13 and rotates, thereby drive sliding plate 14 and reciprocate along spout 16, sliding plate 14 drives back 10 and reciprocates, thereby realize to the regulation of back 10 height, when the height control of back 10 finishes satisfying the user's demand, stop rotating runner 17, because the auto-lock nature of screw-nut itself, make the rigidity between second lead screw 13 and the sliding plate 14, thereby make the height of back 10 fixed, the user can normal use this device this moment; the utility model is suitable for a swivel chair back elevating system sets up slip case 9 through the right side at cushion 8 to the inside second lead screw 13 and the sliding plate 14 that are provided with threaded connection of slip case 9, thereby realize reciprocating of back 10, and second lead screw 13 and sliding plate 14 all hide inside slip case 9, have guaranteed the security of device, whole device simple structure simultaneously, it is convenient to adjust, suitable using widely.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a swivel chair back elevating system, includes cushion (8), and the lower part of cushion (8) is equipped with layer board (4), and the lower surface of layer board (4) is connected and is rotated the upper portion of seat (2), rotates the lower part of seat (2) and rotates and connect bottom plate (1), its characterized in that, the right side of cushion (8) is equipped with slip box (9), and the bottom of slip box (9) is rotated and is connected the lower extreme of second lead screw (13), and the middle part threaded connection sliding plate (14) of second lead screw (13), both sides sliding connection set up in spout (16) the middle part of both sides around slip box (9) around slip box (14), the left side of sliding plate (14) is equipped with connecting plate (15), and fixed plate (11) are connected to the left side of connecting plate (15), and back (10) are connected to the left side of.

2. A swivel chair back lifting mechanism according to claim 1, wherein the fixing plate (11) is detachably connected to the back (10).

3. A revolving chair back lifting mechanism according to claim 1, characterized in that the inside of the sliding box (9) is hollow.

4. A revolving chair back lifting mechanism according to claim 1 or 3, characterized in that the upper part of the second lead screw (13) is pivotally connected to the top of the sliding box (9).

5. A revolving chair back lifting mechanism according to claim 1, characterized in that the top of the second screw (13) is provided with a wheel (17).

6. A revolving chair back lifting mechanism according to claim 1, characterized in that the left and right sides of the lower surface of the seat cushion (8) are provided with guide rods (3), and the middle part of the guide rods (3) is slidably connected with the left and right sides of the supporting plate (4).

7. A revolving chair backrest lifting mechanism according to claim 6, characterized in that the middle of the lower surface of the seat cushion (8) is provided with a bearing seat (5), the bearing seat (5) is rotatably connected with the two sides of the first screw rod (6), the middle of the first screw rod (6) is in threaded connection with the middle of the sliding block (7), the lower part of the sliding block (7) is rotatably connected with the upper end of the supporting rod (12), and the lower end of the supporting rod (12) is rotatably connected with the upper surface of the supporting plate (4).