CN111728411A

CN111728411A - Seat capable of automatically adapting to waist

Info

Publication number: CN111728411A
Application number: CN202010769647.6A
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: 2020-08-03
Publication date: 2020-10-02
Also published as: CN111297107A; CN213464442U

Abstract

The invention discloses a seat capable of automatically adapting to a waist, which comprises a back support, a rotating part, a bracket, a seat back and a seat main body, wherein the back support is arranged on the back support; the lower end of the back support is rotatably connected with the seat main body, and the upper end of the back support is connected with the seat back; the chair back is provided with a waist rest, the bracket is connected to the chair main body, and one end of the rotating part is rotatably connected with the bracket; the other end of the rotating piece is rotationally connected with the waist rest, so that the waist rest moves forwards relative to the back support when the back support tilts backwards. 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. In addition, the invention also discloses another seat capable of automatically adapting to the waist.

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.

Another object of the present invention is to provide a seat that has a simple structure, can automatically adapt to the sitting posture of the waist, and has improved comfort.

In order to achieve the above object, the present invention provides a seat capable of automatically adapting to a lumbar region, comprising a back support, a rotation member, a bracket, a seat back, and a seat main body; the lower end of the back support is rotatably connected with the seat main body, and the upper end of the back support is connected with the seat back; the chair back is provided with a waist rest, the bracket is connected to the chair main body, and one end of the rotating part is rotatably connected with the bracket; the other end of the rotating piece is rotationally connected with the waist rest, so that the waist rest moves forwards relative to the back support when the back support tilts backwards.

Compared with the prior art, the support and the rotating part are arranged between the seat and the seat back, so that the support is connected to the seat main body, one end of the rotating part is rotatably connected with the support, and the other end of the rotating part is rotatably connected with the waist rest, therefore, when the seat back support tilts backwards, the waist rest of the seat back moves forwards relative to the seat back support through the linkage effect among the seat back support, the seat back, the rotating part and the support, the whole seat back is changed in a curve, the seat back can dynamically fit with the waist of a human body, the sitting posture of the waist can be automatically adapted, the comfort level is greatly improved, and the structure is very simple.

Preferably, the seat body comprises a chassis, a seat and a pivot joint; one end of the pivoting piece is pivoted with the front end of the chassis, and 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; one end of the bracket is fixed at the rear end of the chair seat. The pivoting pieces are respectively pivoted with the front end of the chassis and the front end of the seat, and the back support is pivoted with the chassis and the rear end of the seat, so that the chassis, the seat, the pivoting pieces and the back support form a quadrilateral structure, the quadrilateral structure is utilized to realize the backward tilting of the back support, and the aim of linking the seat and the back support is fulfilled.

Preferably, the upper end of the chair back is fixedly connected with the back support, and the chair back can elastically deform. The relative position or the relative included angle between the chair back and the back support can be changed through elastic deformation.

Preferably, the upper end of the backrest is pivotally connected to the back support. The relative position or the relative included angle between the chair back and the back support can be changed in a pivoted mode.

Preferably, the rotating member is pivotally connected to the lumbar support. The rotating piece and the waist rest can rotate mutually in a pivoted mode.

Specifically, the back of the waist rest is provided with a pivoting seat, and the rotating piece is pivoted to the pivoting seat.

Preferably, the rotating piece is in flexible connection with the waist rest. The relative position or the relative included angle between the rotating piece and the waist rest can be changed by a soft connection mode.

Preferably, the rotating member is pivotally connected to the bracket. The rotating piece and the support can rotate in a pivoted mode.

Preferably, the rotating member is elastically connected to the bracket. The relative position or the relative included angle between the rotating piece and the bracket can be changed through elastic deformation.

Preferably, the height of the connecting point of the rotating member and the lumbar support to the surface of the seat is in the range of 80mm to 130mm, and/or the horizontal distance of the connecting point of the rotating member and the lumbar support to the central axis of the seat main body is in the range of 70mm to 140 mm.

A chair capable of automatically adapting to the waist comprises a back support, a chair back, a connecting mechanism and a chair main body; the lower end of the back support is rotatably connected with the seat main body, and the upper end of the back support is connected with the seat back; the chair back is provided with a waist rest, one end of the connecting mechanism is rotationally connected with the waist rest, and the other end of the connecting mechanism is connected with the chair main body, so that the waist rest moves forwards relative to the back support when the back support tilts backwards; the height range from the connecting point of the connecting mechanism and the waist rest to the bearing surface of the seat main body is 80mm to 130 mm; the horizontal distance from the connecting point of the connecting mechanism and the lumbar support to the central shaft of the seat main body ranges from 70mm to 140 mm.

Preferably, the seat body comprises a chassis and a seat; the chair seat can move relative to the chassis, and the lower end of the back support is pivoted with the chassis.

Preferably, the connecting mechanism includes a connecting rod, an armrest is disposed on the seat body, one end of the connecting rod is rotatably connected to the lumbar support, and the other end of the connecting rod is rotatably connected to the armrest.

Drawings

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

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

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

Fig. 4 is a cross-sectional view of a reclined state of a first self-lumbar adjustment seat of the present invention.

Figure 5 is a side view of a second self-lumbar conforming seat of the present invention.

Fig. 6 is a cross-sectional view of a second self-lumbar conforming seat of the present invention in the normal state.

Fig. 7 is a cross-sectional view of a reclined position of a second self-lumbar support seat 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 capable of automatically adapting to the waist of the present invention includes a chair main body, a back support 3, a support 5, a rotating member 6 and an elastically deformable chair back 7, wherein the chair main body includes a base plate 1, a chair seat 2, a pivot member 4, a base 8 and armrests 9, the chair seat 2 is provided with a seat cushion 10, the base 8 is disposed below the base plate 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, so that the back support 3 and the chassis 1 can rotate mutually. 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 support 5 and the middle part of the rear end of the chair seat 2 are fixed into a whole, the other end of the support 5 is pivoted with one end of the rotating piece 6 to form a pivoting point E, so that the support 5 and the rotating piece 6 can rotate mutually. The lower extreme of back of the chair 7 has waist support 71, the other end of rotation piece 6 with the waist support 71 pin joint of back of the chair 7 makes rotation piece 6 with waist support 71 can rotate each other. Specifically, the rotating member 6 is integrally in a Y-shaped structure, the lower end of the rotating member is pivotally connected to the bracket 5, and two bifurcated ends of the upper portion of the rotating member extend to the left side and the right side of the seat back 7 respectively. 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 waist leans on 71 to be the arc, the left and right both sides of the well lower part position on the back of waist leans on 71 are equipped with pivot joint seat 72, the upper end pin joint of rotating the piece 6 in pivot joint seat 72 forms pivot joint point F, makes rotate the piece 6 pin joint in the rear side of waist leans on 71, but rotation between the two. 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.

The connection point of the rotating piece 6 and the lumbar support 71 is located at the bottommost point of the arc-shaped concave surface of the lumbar support 71. The height of the connecting point of the rotating element 6 and the lumbar support 71 to the surface of the seat 2 ranges from 80mm to 130mm, preferably 100 mm. The horizontal distance from the connecting point of the rotating member 6 and the lumbar support 71 to the central axis of the lifter 82 is 70mm to 140mm, preferably 100 mm. Within the range of the height and the horizontal distance, comfortable sitting postures can be provided for users, and the device is suitable for most users and strong in adaptability.

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 because 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 chassis 1 and the back end of the seat 2 to form the quadrilateral structure. Pass through again the seat support 2 reaches set up support 5 and rotation 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 at the back, therefore can pass through it makes the waist of the downside of back of the chair 7 lean on 71 relative to support 3 forward movement outstanding at the back to make whole back of the chair 7 be the curve change, human waist can be laminated to the dynamic of back of the chair 7, and then to the position of sitting self-adaptation of waist, greatly improved the comfort level, the structure is very simple moreover.

In addition to the above embodiments, the lumbar self-adaptation seat 100 of the present invention may have other embodiments as follows:

for example, in the case where the other structure of the above embodiment is not changed, the same function can be achieved by changing the connection manner of the seatback 7 and the back support 3. Specifically, the upper end of the seat back 7 is pivotally connected to the back support 3. The relative position or the relative included angle between the backrest 7 and the back support 3 can be changed in a pivoted mode, so that the backrest 7 is driven to rotate by a certain angle when the waist support 71 moves forwards relative to the back support 3, and the same functional effect as the embodiment is further realized.

For example, in the case where the other configuration is not changed in the above embodiment, the same function can be achieved by changing the connection mode between the rotor 6 and the lumbar support 71. Specifically, the rotating member 6 is flexibly connected to the lumbar support 71. The flexible connection means that the rotating element 6 and the lumbar support 71 are bent or rotated with respect to each other by being wound around a bent edge. The relative position or the relative included angle between the rotating part 6 and the lumbar support 71 can be changed in a flexible connection manner, so that the rotating part 6 can swing relative to the lumbar support 71 and push the lumbar support 71 at the same time, and the same functional effects as those of the above embodiment are achieved.

For another example, in the case where the other structure of the above embodiment is not changed, the same function can be achieved by changing the connection manner of the rotating member 6 and the holder 5. In particular, the rotatable part 6 is connected to the holder 5 in an elastically deformable manner. That is, the rotating member 6 is fixedly connected with the bracket 5 through an elastic adhesive, and the elastic adhesive can be elastically deformed, so that the relative position or the relative included angle between the rotating member 6 and the bracket 5 can be changed, and the same functional effect as the above embodiment can be achieved.

The connection relationships among the back support 3, the rotation member 6, the bracket 5 and the seat back 7 of the lumbar self-adjusting seat 100 of the present invention can be combined in the above-listed manner, and similar effects can be achieved.

Referring to fig. 5-7, another self-lumbar support chair 200 of the present invention is shown.

The self-lumbar-adapting seat 200 comprises a back support 201, a seat back 202, a connecting mechanism 203 and a seat main body; the chair main body comprises a chassis 204 and a chair seat 205, and the chair main body is also provided with armrests 206; the seat 205 is movable relative to the chassis 204, and specifically, the seat 205 can tilt back relative to the chassis 204. The lower end of the back support 201 is pivoted with the chassis 204, the upper end of the back support 201 is fixedly connected with the chair back 202, and the chair back 202 can elastically deform, so that the back support 201 and the chair back 202 can relatively rotate. Of course, the back support 201 may be pivotally connected to the backrest 202. The chair back 202 is provided with a waist support 2021, one end of the connecting mechanism 203 is rotatably connected with the waist support 2021, and the other end of the connecting mechanism 203 is rotatably connected with the armrest 206; specifically, the connecting mechanism 203 is a connecting rod, one end of the connecting rod is pivotally connected to the lumbar support 2021, and the other end of the connecting rod is pivotally connected to the armrest 206. The height range from the pivot point of the connecting rod pivoted with the waist rest 2021 to the bearing surface of the chair seat 205 is 80mm to 130mm, preferably 100 mm; the horizontal distance from the pivot point of the connecting rod pivoted with the waist rest 2021 to the central axis of the chassis 204 is 70mm to 140mm, preferably 100 mm. When the people sits on the chair seat 205 and depends on the chair back 202, the chair seat 205 can tilt back slightly, the back support 201 can tilt back, at this time, the connecting rod can pull forward the waist support 2021, makes the waist support 2021 is relative the back support 201 moves forward, thereby makes the waist support 2021 is unlikely to follow the back support 201 moves backward by a wide margin, keeps fitting with the waist of the human body, and guarantees comfortable effect.

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: comprises a back support, a rotating part, a bracket, a chair back and a chair main body; the lower end of the back support is rotatably connected with the seat main body, and the upper end of the back support is connected with the seat back; the chair back is provided with a waist rest, the bracket is connected to the chair main body, and one end of the rotating part is rotatably connected with the bracket; the other end of the rotating piece is rotationally connected with the waist rest, so that the waist rest moves forwards relative to the back support when the back support tilts backwards.

2. The self-lumbar conforming seat according to claim 1 wherein: the chair main body comprises a chassis, a chair seat and a pivoting piece; one end of the pivoting piece is pivoted with the front end of the chassis, and 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; one end of the bracket is fixed at the rear end of the chair seat.

3. 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 chair back can elastically deform.

4. The self-lumbar conforming seat according to claim 1 wherein: the upper end of the chair back is pivoted with the back support.

5. The self-lumbar conforming seat according to claim 1 wherein: the rotating piece is pivoted with the waist rest.

6. The self-lumbar conforming seat according to claim 5 wherein: the back of the waist rest is provided with a pin joint seat, and the rotating piece is pin jointed with the pin joint seat.

7. The self-lumbar conforming seat according to claim 1 wherein: the rotating piece is in flexible connection with the waist rest.

8. The self-lumbar conforming seat according to claim 1 wherein: the rotating piece is pivoted with the bracket.

9. The self-lumbar conforming seat according to claim 1 wherein: the rotating piece and the bracket are connected in an elastically deformable manner.

10. The self-lumbar conforming seat according to claim 1 wherein: the height range of the connecting point of the rotating part and the lumbar support to the surface of the seat is 80mm to 130mm, and/or the horizontal distance range of the connecting point of the rotating part and the lumbar support to the central shaft of the seat main body is 70mm to 140 mm.

11. A seat capable of automatically adapting to waist is characterized in that: comprises a back support, a chair back, a connecting mechanism and a chair main body; the lower end of the back support is rotatably connected with the seat main body, and the upper end of the back support is connected with the seat back; the chair back is provided with a waist rest, one end of the connecting mechanism is rotationally connected with the waist rest, and the other end of the connecting mechanism is connected with the chair main body, so that the waist rest moves forwards relative to the back support when the back support tilts backwards; the height range from the connecting point of the connecting mechanism and the waist rest to the bearing surface of the seat main body is 80mm to 130 mm; the horizontal distance from the connecting point of the connecting mechanism and the lumbar support to the central shaft of the seat main body ranges from 70mm to 140 mm.

12. The self-lumbar conforming seat according to claim 10 wherein: the chair main body comprises a chassis and a chair seat; the chair seat can move relative to the chassis, and the lower end of the back support is pivoted with the chassis.

13. The self-lumbar conforming seat according to claim 10 wherein: the connecting mechanism comprises a connecting rod, an armrest is arranged on the seat body, one end of the connecting rod is rotatably connected with the waist rest, and the other end of the connecting rod is rotatably connected with the armrest.