CN111297107A

CN111297107A - Seat capable of automatically adapting to waist

Info

Publication number: CN111297107A
Application number: CN202010324803.8A
Authority: CN
Inventors: 朱顺东
Original assignee: Dongguan Boyi Furniture Ltd
Current assignee: Dongguan Boyi Furniture Ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-06-19
Also published as: CN213464442U; CN111728411A

Abstract

The invention discloses a chair capable of automatically adapting to a waist, which comprises a chassis, a chair seat, a back support, a pivoting piece, a support, a rotating piece and an elastically deformable chair back, wherein one end of the pivoting piece is pivoted with the front end of the chassis, the other end of the pivoting piece is pivoted with the front end of the chair seat, the lower end of the back support is pivoted with the chassis, and the middle part of the back support is pivoted with the rear end of the chair seat; the one end of support is fixed in the rear end of seat support, the other end of support with the one end pin joint of rotating the piece, the other end of rotating the piece with the back of the chair pin joint, the one end of the back of the chair connect in the back of the body is supported. The chair capable of automatically adapting to the waist has the advantages of simple structure, capability of automatically adapting to the sitting posture of the waist and high comfort level.

Description

Seat capable of automatically adapting to waist

Technical Field

The invention relates to a seat, in particular to a seat capable of automatically adapting to a waist.

Background

The whole chair back of the existing chair is generally only provided with an elastic 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 a role in elastic buffering. However, the surface of the chair back contacting with the back of the human body cannot deform, and the curve of the lumbar vertebra changes along with different sitting postures of the human body, so that the chair back cannot adapt to the change of the posture of the lumbar vertebra, people feel uncomfortable when keeping certain sitting postures, the requirements of various sitting postures cannot be met, and the comfort level is not high.

Disclosure of Invention

The invention aims to provide a seat which is simple in structure, can automatically adapt to the sitting posture of the waist and improves the comfort level.

In order to achieve the purpose, the chair capable of automatically adapting to the waist comprises a chassis, a chair seat, a back support, a pivoting piece, a support, a rotating piece and an elastically deformable chair back, wherein one end of the pivoting piece is pivoted with the front end of the chassis, the other end of the pivoting piece is pivoted with the front end of the chair seat, the lower end of the back support is pivoted with the chassis, and the middle part of the back support is pivoted with the rear end of the chair seat; the one end of support is fixed in the rear end of seat support, the other end of support with the one end pin joint of rotating the piece, the other end of rotating the piece with the back of the chair pin joint, the one end of the back of the chair connect in the back of the body is supported.

Compared with the prior art, the invention realizes the backward tilting of the back support by utilizing the quadrilateral structure as the pivoting pieces are respectively pivoted with the front end of the chassis and the front end of the seat and then the back support is pivoted with the rear ends of the chassis and the seat to form the quadrilateral structure; pass through again the seat support reaches set up the support between the back of the chair and rotate the piece, and the back of the chair is elastic deformation, makes when the back of the body support is faced backwards, the inclination of seat support is different with the inclination that supports at the back, therefore can pass through it makes the downside part of the back of the chair move forward outstanding to rotate the piece, makes the whole back of the chair be the curvilinear variable of S-shaped, and the back of the chair can the human waist of dynamic laminating, and then to the position of sitting self-adaptation of waist, has greatly improved the comfort level, and the structure is very simple moreover.

Preferably, the upper end of the chair back is fixedly connected with the back support, and the lower end of the chair back is separated from the back support.

Preferably, the lower side of the chair back is provided with a lumbar support, and the rotating piece is pivoted to the lumbar support.

Specifically, a pivot joint seat is arranged at the middle lower part of the waist back surface, and the upper end of the rotating piece is pivoted to the pivot joint seat.

Preferably, the base is arranged below the chassis and connected with the chassis.

Specifically, a lifter is arranged between the base and the chassis.

Specifically, the base has a plurality of rollable rollers.

Preferably, the back support is provided with a handrail, and the handrail is fixedly connected with the back support.

Preferably, the chair further comprises a seat cushion, and the seat cushion is arranged on the surface of the chair seat.

Drawings

Fig. 1 is a perspective view of the self-lumbar adapting seat of the present invention.

Figure 2 is a side view of the self-lumbar adapting seat of the present invention.

Fig. 3 is a cross-sectional view of the normal state of the self-lumbar conforming seat of the present invention.

Fig. 4 is a cross-sectional view of the back reclined position of the self-lumbar support chair of the present invention.

Detailed Description

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

As shown in fig. 1 to 3, the chair 100 for automatically adapting to the waist of the present invention comprises a chassis 1, a seat 2, a back support 3, a pivot 4, a bracket 5, a rotation member 6, an elastically deformable chair back 7, a base 8, an armrest 9 and a seat cushion 10, wherein the base 8 is disposed below the chassis 1, and the base 8 has a plurality of rollers 81 capable of rolling. A lifter 82 is arranged between the base 8 and the chassis 1, and the chassis 1 is fixedly connected with the lifting end of the lifter 82. One end of the pivoting member 4 is pivoted with the front end of the chassis 1 to form a pivoting point a, and the other end of the pivoting member 4 is pivoted with the seat body 21 at the bottom of the front end of the seat 2 to form a pivoting point B. The side surface of the back support 3 is approximately in an L-shaped structure, the lower end of the back support 3 is pivoted with the chassis 1 to form a pivoting point C, and the middle part of the back support 3 is pivoted with the rear end of the chair seat 2 to form a pivoting point D. One end of the bracket 5 is fixed with the middle part of the rear end of the chair seat 2 into a whole, and the other end of the bracket 5 is pivoted with one end of the rotating piece 6 to form a pivoting point E; the other end of the rotating piece 6 is pivoted with the chair back 7, specifically, the rotating piece 6 is integrally in a Y-shaped structure, the lower end of the rotating piece is pivoted with the support 5, and two bifurcated ends above the rotating piece respectively extend to the left side and the right side of the chair back 7. One end of the chair back 7 is connected with the back support 3, specifically, the upper end of the chair back 7 is fixedly connected with the back support 3, and the lower end of the chair back 7 is separated from the back support 3. The lower side of the chair back 7 is provided with an arc-shaped waist support 71, the left side and the right side of the middle lower position of the back surface of the waist support 71 are provided with pivot seats 72, the upper end of the rotating piece 6 is pivoted on the pivot seats 72 to form a pivot point F, so that the rotating piece 6 is pivoted on the rear side of the waist support 71. The rotating part 6 is connected with the bracket 5 and then is approximately in an L-shaped structure. The armrests 9 are positioned on the left side and the right side of the seat 2, and the lower ends of the armrests and the lower end of the back support 3 are fixedly connected to form an integral structure. The seat cushion 10 is disposed on the surface of the seat 2.

With reference to fig. 3 and 4, when a person sits on the seat cushion 10 and leans on the chair back 7, the chair seat 2 will slightly tilt backwards, the chair seat 2 drives the pivot joint 4 and the back support 3 to swing, and at this time, the back support 3, the chassis 1, the chair seat 2 and the pivot joint 4 form a quadrilateral deformation; the support 5 swings backward as the seat 2 tilts backward, and the back support 3 swings backward around the pivot point C. At this time, because the inclination of seat support 2 is different with the inclination of back support 5, produces the displacement difference, makes rotate 6 antedisplacement, the upper end of rotating 6 pushes away the waist leans on 71, makes the waist leans on 71 outstanding in back of the chair 7, thereby makes back of the chair 7 is the S-shaped and laminates with human waist. When a person leaves the seat cushion 10, the backrest 7, the back support 3, the rotation member 6, the bracket 5 and the seat 2 can be automatically restored to their original states because the backrest 7 has a resiliently-returning structure.

Compared with the prior art, the invention realizes the backward tilting of the back support 3 by utilizing the quadrilateral structure as the pivoting piece 4 is respectively pivoted with the front end of the chassis 1 and the front end of the seat 2, and then the back support 3 is pivoted with the rear ends of the chassis 1 and the seat 2 to form the quadrilateral structure; pass through again the seat support 2 reaches set up support 5 and rotate piece 6 between the back of the chair 7, and back of the chair 7 is elastic deformation, make when back of the chair support 5 is faced backwards, the inclination of seat support 2 is different with the inclination that supports 3 on the back, therefore can pass through it makes the downside part of the back of the chair 7 move forward protrudingly to rotate piece 6, makes whole back of the chair 7 be the curve change of S-shaped, and the back of the chair 7 can the human waist of dynamic laminating, and then to the position of sitting self-adaptation of waist, has greatly improved the comfort level, and the structure is very simple moreover.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.

Claims

1. A seat capable of automatically adapting to waist is characterized in that: the chair comprises a chassis, a chair seat, a back support, a pivoting piece, a support, a rotating piece and an elastically deformable chair back, wherein one end of the pivoting piece is pivoted with the front end of the chassis, the other end of the pivoting piece is pivoted with the front end of the chair seat, the lower end of the back support is pivoted with the chassis, and the middle part of the back support is pivoted with the rear end of the chair seat; the one end of support is fixed in the rear end of seat support, the other end of support with the one end pin joint of rotating the piece, the other end of rotating the piece with the back of the chair pin joint, the one end of the back of the chair connect in the back of the body is supported.

2. The self-lumbar conforming seat according to claim 1 wherein: the upper end of the chair back is fixedly connected with the back support, and the lower end of the chair back is separated from the back support.

3. The self-lumbar conforming seat according to claim 1 wherein: the lower side of the chair back is provided with a waist support, and the rotating piece is pivoted to the waist support.

4. The self-lumbar conforming seat according to claim 3 wherein: the middle lower part of the waist back surface is provided with a pin joint seat, and the upper end of the rotating piece is pin jointed with the pin joint seat.

5. The self-lumbar conforming seat according to claim 1 wherein: the base is arranged below the chassis and connected with the chassis.

6. The self-lumbar conforming seat according to claim 5 wherein: a lifter is arranged between the base and the chassis.

7. The self-lumbar conforming seat according to claim 5 wherein: the base has a plurality of rollable rollers.

8. The self-lumbar conforming seat according to claim 1 wherein: the back support is characterized by further comprising an armrest, and the armrest is fixedly connected with the back support.

9. The self-lumbar conforming seat according to claim 1 wherein: still include the seatpad, the seatpad sets up in the surface of seat support.