CN213188803U

CN213188803U - Seat with self-loading chassis

Info

Publication number: CN213188803U
Application number: CN202021423363.3U
Authority: CN
Inventors: 朱顺东
Original assignee: Dongguan Boyi Furniture Ltd
Current assignee: Dongguan Boyi Furniture Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-05-14
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a chair with self-loading chassis, which comprises a chair seat, a chassis, a linkage rod, a backrest support and an elastic reset piece, wherein the lower end of the backrest support is provided with a connecting piece which is pivoted with the rear end of the chassis, the connecting piece extends out of a pivoting piece, the front end of the chassis is pivoted with one end of the linkage rod, the other end of the linkage rod is pivoted with the front end of the chair seat, and the rear end of the chair seat is pivoted with the upper end of the pivoting piece; the elastic reset piece is arranged between the chair seat and the chassis or between the backrest support and the chassis so as to reset the backrest support and the chair seat. The utility model discloses the seat from heavy burden chassis in area when the seat support receives heavily, but the position self-adjustment of seat support and back, and the resilience force that leans against can improve the travelling comfort of using according to human weight automatically regulated, but self-resetting when not receiving heavily convenient to use.

Description

Seat with self-loading chassis

Technical Field

The present invention relates to a chair, and more particularly to a chair with a self-supporting base plate, which can be adjusted by itself when the seat is heavy and reset automatically when the seat is not heavy.

Background

The existing chair generally only has a chair back with an adjusting function, for example, an office chair, when people sit on the chair and lean against the chair back, the chair back can elastically swing downwards to play an elastic buffering role. However, since the chair back and the chair seat of the existing chair are not related at all, although the chair back can be adjusted properly with the change of the sitting posture of the human body, the chair seat can not adapt to the change of the sitting posture, so that the chair seat can not feel uncomfortable when the human body keeps certain sitting postures, can not meet the requirements of various sitting postures, and has low comfort level. In addition, although the conventional chair seat can adapt to the change of sitting postures, the backward bending force applied to the chair back by people with different weights is different, and the elasticity of the chair back cannot be automatically adjusted according to the requirement, so that the comfort is also influenced to a certain degree.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a when the seat support receives the heavy, but the position self-adjustment of seat support and back, and the resilience force that leans against can be according to human weight automatically regulated, but self-righting's the seat from the burden chassis when not receiving the heavy.

In order to achieve the above object, the utility model provides a chair with self-weight chassis, including seat support, chassis, gangbar, back support and elastic reset piece, the lower extreme of back support has a connecting piece, the connecting piece is pin-jointed with the rear end of chassis, the connecting piece extends out of the pin-jointed piece, the front end of chassis is pin-jointed with one end of the gangbar, the other end of the gangbar is pin-jointed with the front end of seat support, the rear end of seat support is pin-jointed with the upper end of the pin-jointed piece; the elastic reset piece is arranged between the chair seat and the chassis or between the backrest support and the chassis so as to reset the backrest support and the chair seat.

Compared with the prior art, the utility model has the advantages that the connecting piece is arranged at the lower end of the backrest support, the pivoting piece is arranged on the connecting piece, so that the connecting piece is pivoted with the rear end of the chassis, the front end of the chassis is pivoted with one end of the linkage rod, the other end of the linkage rod is pivoted with the front end of the seat, and the rear end of the seat is pivoted with the upper end of the pivoting piece; therefore, a deformable quadrilateral structure is formed among the seat, the chassis, the linkage rod and the backrest support, and the backrest support can drive the seat to be automatically adjusted when the human back leans backwards to act on the backrest support so as to adapt to different sitting posture requirements. In addition, by arranging the elastic resetting piece, the backrest support is linked with the seat, so that the resilience force provided by the backrest support to a human body is correlated with the gravity borne by the seat, the resilience forces with different forces can be provided according to users with different weights, the purposes of automatic adjustment and automatic adaptation are achieved, and the comfort of the seat is greatly improved; when the back does not act on the backrest support or the seat is not seated, the seat can be automatically reset, the structure is simple, and the use is convenient.

Preferably, the pivot member is bent and extended upward and toward the direction of the backrest support.

Preferably, one end of the elastic reset piece is pivoted on the chassis, the other end of the elastic reset piece is pivoted at the bottom of the seat, and the pivoting center of the elastic reset piece coincides with the pivoting shaft center of the pivoting piece.

Preferably, the elastic restoring member is an extension spring.

Preferably, the bottom of the front end of the seat is provided with a front pivoting seat for the linkage rod to pivot, and the bottom of the rear end of the seat is provided with a rear pivoting seat for the pivoting piece to pivot.

Preferably, the rear end of the chassis protrudes upward to form a pivot portion, and the connecting member is pivoted to the pivot portion. The front end of the elastic resetting piece is pivoted on the chassis, and the rear end of the elastic resetting piece is pivoted on the connecting piece.

Specifically, the elastic restoring member is a compression spring.

Specifically, the chassis is provided with an elasticity adjusting mechanism which can push the front end of the elastic resetting piece to move towards the rear end so as to compress the elastic resetting piece.

Specifically, elasticity adjustment mechanism includes adjusting screw, adjusting nut and connecting block, adjusting nut is fixed in the chassis, adjusting screw with adjusting screw threaded connection and with the connecting block is connected, the connecting block with elasticity resets the pin joint.

Preferably, the range of the included angle between the vertical line of the horizontal plane and the connecting line between the pivot point of the connecting piece pivoted with the chassis and the pivot point of the rear end of the seat pivoted with the upper end of the pivot piece is 20-30 degrees.

Specifically, the range of the linear distance from the pivot point of the connecting piece pivoted with the chassis to the pivot point of the seat pivoted with the pivot piece is 80mm to 90 mm.

Specifically, the range of the linear distance from the pivot point of the connecting piece and the chassis to the pivot point of the elastic resetting piece and the connecting piece is 40mm to 50 mm.

Drawings

Fig. 1 is a perspective view of a seat with a self-supporting chassis according to a first embodiment of the present invention.

Fig. 2 is a sectional view of a seat with a self-supporting chassis according to a first embodiment of the present invention in a natural state.

Fig. 3 is a sectional view of a seat with a self-supporting chassis according to a first embodiment of the present invention in a loaded state.

Fig. 4 is an exploded view of a seat with a self-supporting chassis according to a first embodiment of the present invention.

Fig. 5 is a perspective view of a seat with a self-supporting chassis according to a second embodiment of the present invention.

Fig. 6 is a sectional view of a seat with a self-supporting chassis according to a second embodiment of the present invention in a natural state.

Fig. 7 is a sectional view of a seat with a self-supporting chassis according to a second embodiment of the present invention in a loaded state.

Fig. 8 is an exploded view of a seat with a self-supporting chassis according to a second embodiment of the present invention.

Fig. 9 is an enlarged view of a portion G in fig. 6.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Fig. 1 to 4 show a structure of a seat with a self-supporting chassis according to a first embodiment of the present invention, which is as follows:

as shown in fig. 1 and 2, the chair 100 with self-supporting heavy chassis of the present invention comprises a chair seat 1, a chassis 2, a linkage rod 3, a backrest support 4 and an elastic reset member 5, wherein the lower end of the backrest support 4 extends to the lower part of the chair seat 1 to form a connecting member 41, the middle part of the connecting member 41 is pivoted with the rear end of the chassis 2 to form a pivot point a, the end of the connecting member 41 is bent upward and extends out of a pivot member 42 toward the backrest support 4, the front end of the chassis 2 is pivoted with one end of the linkage rod 3 to form a pivot point B, the other end of the linkage rod 3 is pivoted with the front end of the chair seat 1 to form a pivot point C, and the rear end of the chair seat 1 is pivoted with the upper end of the pivot member 42 to form a pivot point D; the elastic reset piece 5 is arranged between the seat 1 and the chassis 2 to reset the backrest support 4 and the seat 1. The elastic reset piece 5 is an extension spring.

As shown in fig. 1 and fig. 2, one end of the elastic restoring element 5 is pivoted to the chassis 2 to form a pivot point E, and the other end is pivoted to the bottom of the seat 1, and the pivot center coincides with the pivot axis center of the pivot element 42, i.e., is pivoted to the pivot D. The horizontal heights of the pivot point D, the pivot point E and the pivot point A are sequentially arranged from high to low.

Referring to fig. 2, the front end bottom of the seat 1 is provided with a front pivoting seat 11 for the linkage rod 3 to pivot, and the rear end bottom is provided with a rear pivoting seat 12 for the pivoting member 42 to pivot. The front pivoting seat 11 can facilitate the linkage rod 3 to be pivoted with the chair seat 1. The rear pivoting seat 12 can facilitate the pivoting of the pivoting member 41 and the seat 1.

Referring to fig. 2, the seat 100 with a self-loading chassis further includes a base 6 and a seat cushion 7, wherein the base 6 is disposed below the chassis 2 and connected to the chassis 2. A lifter 8 is arranged between the base 6 and the chassis 2. The base 6 has a plurality of rollable rollers 9. The cushion 7 is disposed on the surface of the seat 1.

The angle between the connecting line between the pivot point A and the pivot point D and the vertical line of the horizontal plane ranges from 20 degrees to 30 degrees. The range of the linear distance from the pivot point A to the pivot point D is 80mm to 90 mm. Within these angles and distance ranges, the seat 100 with the self-ballasted chassis provides the best self-ballasting and reclining resilience effects.

Referring to fig. 2 and 3, when a load is applied, the backrest support 4 is forced to tilt backward, and the connecting member 41 at the lower end of the backrest support 4 rotates downward around the pivot point a, so that the pivot member 42 swings around the pivot point a. The pivot member 42 drives the seat 1 to tilt backward and stretch the elastic restoring member 5. At this time, the rear end of the seat 1 moves upward and rearward. The front end of the seat 1 drives the linkage rod 3 to swing upwards and backwards around the pivot point B, so that the front end of the seat 1 moves upwards and backwards, the front end of the seat 1 is higher than the rear end of the seat 1, and the angle of the seat 1 is automatically adjusted. When no load is loaded, the elastic reset piece 5 resets to drive the seat 1, the connecting piece 41, the pivot joint piece 42, the backrest support 4, the chassis 2 and the linkage rod 3 to reset, and each part returns to the original state after the backrest support 4 abuts against the rear end of the seat 1 directly.

Compared with the prior art, the utility model has the advantages that the connecting piece 41 is arranged at the lower end of the backrest support 4, the pivoting piece 42 is arranged at the tail end of the connecting piece 41, so that the connecting piece 41 is pivoted with the rear end of the chassis 2, the front end of the chassis 2 is pivoted with one end of the linkage rod 3, the other end of the linkage rod 3 is pivoted with the front end of the seat 1, and the rear end of the seat 1 is pivoted with the upper end of the pivoting piece 42; therefore, a deformable quadrilateral structure is formed among the seat 1, the chassis 2, the linkage rod 3 and the back support 4, and the back support 4 can drive the seat 1 to be automatically adjusted to adapt to different sitting posture requirements when the back of a human body leans backwards to act on the back support 4. In addition, by arranging the elastic reset piece 5, because the back support 4 is linked with the seat 1, the resilience force provided by the back support 4 to the human body is correlated with the gravity borne by the seat 1, so that resilience forces with different forces can be provided according to users with different weights, the purposes of automatic adjustment and automatic adaptation are achieved, and the comfort of the seat is greatly improved; when the back does not act on the backrest support 4 or the seat is not seated, the seat 1 can be automatically reset, the structure is simple, and the use is convenient.

Fig. 5 to 9 show a structure 100' of a seat with a self-supporting chassis according to a second embodiment of the present invention, which is as follows:

as shown in fig. 5 to 8, the structure of the chair 100 'with self-loading chassis of the present embodiment is substantially the same as that of the first embodiment, and includes a seat 1', a chassis 2 ', a linkage rod 3', a backrest support 4 'and an elastic restoring member 5'. The middle part of the connecting piece 41 'is pivoted with the rear end of the chassis 2' to form a pivoting point a, the front end of the chassis 2 'is pivoted with one end of the linkage rod 3' to form a pivoting point b, the other end of the linkage rod 3 'is pivoted with the lower side of the front end of the seat 1' to form a pivoting point c, and the lower side of the rear end of the seat 1 'is pivoted with the upper end of the pivoting piece 42' to form a pivoting point d. The difference between this embodiment and the first embodiment lies in the structure of the connecting member 41 'and the pivot member 42' of the backrest support 4 ', the connection relationship between the connecting member 41' and the chassis 2 ', and the arrangement position of the elastic restoring member 5'. Specifically, the rear end of the chassis 2 'protrudes upward to form a pivot portion 2a, and the connecting member 41' is pivotally connected to the pivot portion 2 a. The upper end of the connecting member 41 ' extends upwards to form the pivot member 42 ', and the lower end of the connecting member 41 ' extends downwards. The front end of the elastic reset piece 5 ' is pivoted to the chassis 2 ' to form a pivot point e, and the rear end is pivoted to the lower end of the connecting piece 41 ' to form a pivot point f. The elastic reset piece 5' is a compression spring. The horizontal heights of the pivot point d, the pivot point a and the pivot point f are sequentially arranged from high to low.

As shown in fig. 6 and 9, the chassis 2 'has an elastic force adjusting mechanism 21, and the elastic force adjusting mechanism 21 can push the front end of the elastic restoring member 5' to move towards the rear end to compress the elastic restoring member 5. Specifically, the elasticity adjusting mechanism 21 includes an adjusting screw 211, an adjusting nut 212 and a connecting block 213, the adjusting nut 212 is fixed to the chassis 2 ', the adjusting screw 211 is in threaded connection with the adjusting nut 212 and is connected with the connecting block 213, and the connecting block 213 is pivoted with the elastic resetting member 5' to form the pivot point e. By providing the elasticity adjusting mechanism 21, the elasticity of the elastic restoring member 5 'can be adjusted, so that the resilience of the backrest support 4' is larger.

Referring to fig. 6, an angle between a connecting line between the pivot point a and the pivot point d and a vertical line of the horizontal plane ranges from 20 degrees to 30 degrees. The linear distance from the pivot point a to the pivot point d ranges from 80mm to 90 mm. The linear distance from the pivot point a of the connecting piece 41 'pivoted with the chassis 2' to the pivot point f of the elastic restoring piece 5 'pivoted with the connecting piece 41' is 40mm to 50 mm. Within these angles and distance ranges, the seat 100' with the self-ballasted chassis provides the best self-ballasting and reclining resilience effects. The beneficial effects of the seat 100' with self-loading chassis of the second embodiment are substantially the same as those of the first embodiment, and the description thereof is not repeated.

The above disclosure is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the scope of the present invention is not limited to the above embodiments.

Claims

1. The utility model provides a take seat from heavy chassis which characterized in that: the chair comprises a chair seat, a chassis, a linkage rod, a backrest support and an elastic resetting piece, wherein a connecting piece is arranged at the lower end of the backrest support and is pivoted with the rear end of the chassis, the connecting piece extends out of the pivoting piece, the front end of the chassis is pivoted with one end of the linkage rod, the other end of the linkage rod is pivoted with the front end of the chair seat, and the rear end of the chair seat is pivoted with the upper end of the pivoting piece; the elastic reset piece is arranged between the chair seat and the chassis or between the backrest support and the chassis so as to reset the backrest support and the chair seat.

2. A seat with a self-supporting heavy chassis as claimed in claim 1, wherein: the pivoting piece is bent and extended upwards and towards the direction close to the backrest support.

3. A seat with a self-supporting heavy chassis as claimed in claim 1, wherein: one end of the elastic reset piece is pivoted on the chassis, the other end of the elastic reset piece is pivoted at the bottom of the chair seat, and the pivoting center of the elastic reset piece is superposed with the pivoting shaft center of the pivoting piece.

4. A seat with a self-supporting heavy chassis as claimed in claim 3, wherein: the elastic reset piece is an extension spring.

5. A seat with a self-supporting heavy chassis as claimed in claim 1, wherein: the bottom of the front end of the chair seat is provided with a front pivoting seat for the linkage rod to pivot, and the bottom of the rear end of the chair seat is provided with a rear pivoting seat for the pivoting piece to pivot.

6. A seat with a self-supporting heavy chassis as claimed in claim 1, wherein: the rear end of the chassis is upwards protruded with a pivoting part, and the connecting piece is pivoted with the pivoting part.

7. A seat with a self-supporting heavy chassis as claimed in claim 1, wherein: the front end of the elastic resetting piece is pivoted on the chassis, and the rear end of the elastic resetting piece is pivoted on the connecting piece.

8. The seat with self-supporting heavy chassis of claim 7, wherein: the elastic reset piece is a compression spring.

9. The seat with self-supporting heavy chassis of claim 8, wherein: the chassis is provided with an elastic force adjusting mechanism which can push the front end of the elastic resetting piece to move towards the rear end so as to compress the elastic resetting piece.

10. The seat with self-supporting heavy chassis of claim 9, wherein: the elasticity adjusting mechanism comprises an adjusting screw, an adjusting nut and a connecting block, the adjusting nut is fixed on the chassis, the adjusting screw is in threaded connection with the adjusting screw and is connected with the connecting block, and the connecting block is pivoted with the elastic resetting piece.

11. A seat with self-supporting heavy chassis as claimed in any one of claims 1 or 7, wherein: the range of an included angle between a connecting line between a pivoting point of the connecting piece and the chassis in pivoting connection and a pivoting point of the rear end of the chair seat in pivoting connection with the upper end of the pivoting piece and a vertical line of a horizontal plane is 20-30 degrees.

12. A seat with self-supporting heavy chassis as claimed in claim 1 or 7, wherein: the range of the linear distance from the pivoting point of the connecting piece pivoted with the chassis to the pivoting point of the seat pivoted with the pivoting piece is 80mm to 90 mm.

13. The seat with self-supporting heavy chassis of claim 7, wherein: the range of the linear distance from the pivot point of the connecting piece and the chassis to the pivot point of the elastic reset piece and the connecting piece is 40mm to 50 mm.