CN220477271U - Swivel chair with adjustable backrest angle - Google Patents

Abstract

The utility model relates to the technical field of swivel chairs, in particular to a swivel chair with an adjustable backrest angle, which comprises a seat and a base, wherein the seat and the base are connected through a rotary supporting component; the seat comprises: the seat frame, and the backrest and the seat board which are arranged on the seat frame, wherein the backrest is rotationally connected with the seat frame through a rotating shaft assembly; the rotating shaft assembly consists of two step screws which are respectively arranged on two sides of the backrest and positioned on the same axis and nuts corresponding to the two step screws. The swivel chair with the adjustable backrest angle is ingenious in design, the backrest angle is directly adjusted through the back of a human body, manual assistance is not needed, the swivel chair is simple, safe and high in comfort in operation, and the structure of the spring steel plate is designed, so that the rigid damage of the chair is prevented from being broken when the human body sits, and an effective buffer effect is achieved.

Description

Swivel chair with adjustable backrest angle

Technical Field

The utility model relates to the technical field of swivel chairs, in particular to a swivel chair with an adjustable backrest angle.

Background

The chair is a daily furniture, a seat with a backrest and armrests. Modern chairs are not just seats, more technologies are endowed while attractive and fashionable pursuits are pursued, so that people can use the chairs more leisure and convenient, the swivel chair is one of various chairs, the purpose is to be a rotatable chair, and the purpose that people can finish the change of the sitting posture direction of the human body without standing up and putting the seat is achieved.

However, the backrest angle of the traditional swivel chair is fixed, the comfort of the human body is different for different heights, although a plurality of chairs capable of adjusting the backrest angle exist on the market, the mechanism for adjusting the angle is generally positioned at the armrest of the chair, manual auxiliary adjustment is needed, and the problem of false touch is easy to exist due to the position of the chair, so that the backrest can suddenly change greatly, and the chair has a certain danger. Thus, the existing demand is not satisfied.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model provides a swivel chair with an adjustable backrest angle, which has the following specific technical scheme:

the swivel chair with the adjustable backrest angle comprises a seat and a base, wherein the seat and the base are connected through a rotary supporting component; the seat comprises: the seat frame, and the backrest and the seat board which are arranged on the seat frame, wherein the backrest is rotationally connected with the seat frame through a rotating shaft assembly; the rotating shaft assembly consists of two step screws which are respectively arranged on two sides of the backrest and positioned on the same axis and nuts corresponding to the two step screws.

Further, the distance between the position of the rotating shaft assembly and the seat plate is set to be 28CM.

Further, the seat board is fixedly arranged on the seat frame through an M8 outer hexagon screw.

Further, the rotary support assembly includes: the bracket comprises a bracket, wherein the bracket is fixedly arranged at the bottom of a seat frame, a compression plate and a spring steel plate are respectively and fixedly connected with the upper part and the lower part of the bracket through flat-head outer hexagonal screws and corresponding nuts thereof, a T-shaped bracket is also arranged below the spring steel plate through flat-head outer hexagonal screws and corresponding nuts thereof, a rotating shaft is arranged on the T-shaped bracket, and an elastic taper sleeve and a connecting sleeve are sleeved outside the rotating shaft in sequence.

Further, the number of the spring steel plates is 2, one sides of the two spring steel plates are arranged on the bracket, and the positions of the two spring steel plates on the bracket are spaced symmetrically; the other sides of the two spring steel plates are respectively and fixedly connected to two side parts of a transverse rod of the T-shaped bracket, and a flat gasket and a spring gasket are arranged between a nut used for connection and the transverse rod in a cushioning manner; the longitudinal rod of the T-shaped bracket is rotatably connected with the rotating shaft.

Further, the base top is equipped with rotatory connecting hole, and the cover has the adapter sleeve's rotation axis wholly to be connected with the base through rotatory connecting hole, and rotatory connecting hole disposes the decoration cover outward.

The utility model has the advantages that: the swivel chair with the adjustable backrest angle is ingenious in design, the angle of the backrest is directly adjusted through the back of a human body, manual assistance is not needed, and the swivel chair is simple and safe to operate and high in comfort; and the structure of the spring steel plate is designed, so that the phenomenon that the seat is broken due to rigid damage when a human body sits on the seat is avoided, and an effective buffering effect is achieved.

Drawings

FIG. 1 is a schematic view of an exploded view of a swivel chair with an adjustable back angle in accordance with an embodiment of the utility model;

FIG. 2 is a schematic view of a specific installation structure of a spindle assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing a process of rotating a backrest of a swivel chair with an adjustable backrest angle according to an embodiment of the utility model;

in the figure, the seat frame comprises a 1-seat frame, a 2-backrest, a 3-seat plate, a 4-base, a 5-compression plate, a 6-spring steel plate, a 7-T-shaped bracket, an 8-elastic taper sleeve, a 9-connecting sleeve, a 10-bracket, a 11-flat gasket, a 12-spring gasket, a 13-rotating shaft, a 14-decoration sleeve, a 15-M8 nut, a 16-M8 step screw and a 17-M8 outer hexagon screw.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1, the swivel chair with the adjustable backrest angle comprises a seat and a base 4, wherein the seat and the base 4 are connected through a rotary supporting component.

The seat comprises: a seat frame 1, a backrest 2 and a seat plate 3 mounted on the seat frame 1.

The backrest 2 is rotatably connected with the seat frame 1 through a rotating shaft assembly, as shown in fig. 2, the rotating shaft assembly is composed of two M8 step screws 16 and corresponding M8 nuts 15, which are respectively arranged on two sides of the backrest 2 and are positioned on the same axis. The distance between the position of the spindle assembly and the seat plate 3 is about 28CM to ensure comfortable angular adjustment of the person resting on the backrest 2, as shown in fig. 3. The angle adjustment of the backrest 2 can be directly carried out through the back of a human body without manual assistance, and the operation is simple, safe and high in comfort.

The seat board 3 is fixedly arranged on the seat frame 1 through an M8 outer hexagon screw 17.

The rotary support assembly includes: the bracket comprises a bracket 10, wherein the bracket 10 is fixedly arranged at the bottom of the seat frame 1, the upper surface and the lower surface of the bracket 10 are respectively and fixedly connected with a compression plate 5 and a spring steel plate 6 through flat-head outer hexagonal screws and corresponding nuts, the lower part of the spring steel plate 6 is also provided with a T-shaped bracket 7 through flat-head outer hexagonal screws and corresponding nuts, a rotating shaft 13 is arranged on the T-shaped bracket 7, and an elastic taper sleeve 8 and a connecting sleeve 9 are sleeved outside the rotating shaft 13 in sequence.

More specifically, the number of the spring steel plates 6 is 2, one side of the spring steel plates 6 is arranged on the bracket 10, and the positions of the two spring steel plates 6 on the bracket 10 are symmetrically spaced; the other sides of the two spring steel plates 6 are respectively and fixedly connected with two side parts of a transverse rod of the T-shaped bracket 7, and a flat gasket 11 and a spring gasket 12 are arranged between a nut used for connection and the transverse rod in a cushioning manner; the longitudinal bar of the T-shaped bracket 7 is rotatably connected to the rotation shaft 13. The structure of the spring steel plate 6 prevents the seat from being broken by rigid damage when a human body sits on the seat, and plays an effective buffering role.

The top of the base 4 is provided with a rotary connecting hole, the whole rotary shaft 13 sleeved with the connecting sleeve 9 is connected with the base 4 through the rotary connecting hole, and a decorative sleeve 14 is arranged outside the rotary connecting hole.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship between the components, the movement condition, etc. in a specific posture, and if the specific posture is changed, the directional indicator is correspondingly changed. In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the foregoing detailed description of the utility model has been provided, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, and that certain features may be substituted for those illustrated and described herein. Modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (6)

1. The swivel chair with the adjustable backrest angle comprises a seat and a base (4), and is characterized in that the seat and the base (4) are connected through a rotary supporting component; the seat comprises: the seat frame (1), and a backrest (2) and a seat board (3) which are arranged on the seat frame (1), wherein the backrest (2) is rotationally connected with the seat frame (1) through a rotating shaft component; the rotating shaft assembly consists of two step screws which are respectively arranged on two sides of the backrest (2) and positioned on the same axis and nuts corresponding to the two step screws.

2. A swivel chair with adjustable backrest angle as claimed in claim 1, characterized in that the distance between the position of the swivel assembly and the seat plate (3) is set to 28CM.

3. Swivel chair with adjustable backrest angle according to claim 1, characterized in that the seat plate (3) is fixedly mounted on the seat frame (1) by means of M8 external hexagonal screws (17).

4. The adjustable back angle swivel chair of claim 1 wherein the swivel support assembly comprises: draw together type support (10), draw together type support (10) fixed mounting in seat frame (1) bottom, draw together type support (10) upper and lower outside through flat head hexagonal screw and corresponding nut respectively fixedly connected with clamp plate (5) and spring steel sheet (6), also be connected with T type support (7) through flat head hexagonal screw and its corresponding nut installation below spring steel sheet (6), be provided with rotation axis (13) on T type support (7), elastic taper sleeve (8) and adapter sleeve (9) have been overlapped outside rotation axis (13) in proper order.

5. A swivel chair with adjustable backrest angle as claimed in claim 4, characterized in that the number of spring steel plates (6) is 2, one side of each spring steel plate (6) is arranged on the bracket (10), and the positions of the two spring steel plates (6) on the bracket (10) are symmetrically spaced; the other sides of the two spring steel plates (6) are respectively and fixedly connected with two side parts of a transverse rod of the T-shaped bracket (7), and a flat gasket (11) and a spring gasket (12) are arranged between a nut used for connection and the transverse rod in a cushioning way; the longitudinal rod of the T-shaped bracket (7) is rotationally connected with the rotating shaft (13).

6. A swivel chair with adjustable backrest angle as claimed in claim 4, characterized in that the top of the base (4) is provided with a swivel connection hole, the whole swivel shaft (13) sleeved with the connection sleeve (9) is connected with the base (4) through the swivel connection hole, and a decorative sleeve (14) is arranged outside the swivel connection hole.