CN212521276U

CN212521276U - Self-adaptive chair back supporting device

Info

Publication number: CN212521276U
Application number: CN202020897283.5U
Authority: CN
Inventors: 倪良正; 张叙俊; 毛立; 孙杰; 邱裕峰; 高宏杰; 杜修兵
Original assignee: Zhejiang Sunon Furniture Manufacturing Co Ltd
Current assignee: Sunon Technology Co Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-02-12
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a self-adaptive chair back supporting device, which comprises a chair seat, a back support and a rigid back supporting piece, wherein the back supporting piece is arranged at the front side of the back support and is configured to support the waist and back of a human body; the back support is configured as a main body support of the back support, the back support comprises a flexible support main body, and the lower end of the support main body is provided with a seat connecting part fixedly connected with a seat; a support component for supporting the back support piece is arranged between the bracket main body and the back support piece; compared with the prior art, the back support is made of a tough material, the support main body has the capability of bending deformation on the premise of ensuring that the back support piece supports and is stably connected with the seat, the function of self-adaption can be achieved by deformation along with different postures of leaning against the back support piece by a user, the function of left-right torsion and backward tilting of the back support is achieved, and the use comfort of the seat is improved.

Description

Self-adaptive chair back supporting device

Technical Field

The utility model relates to a seat field, in particular to self-adaptation back of chair strutting arrangement.

Background

The chair is used as an indispensable seat in work and life, the requirement on the comfort of the chair by people is higher and higher, so that the chair with a front-back separated chair back is provided, the back is connected to the chair seat, the front back is arranged at the front end of a back support, and the problems can be solved through a more targeted design after the front back and the back are separated; in the prior art, in most of chairs with front and back separated type chair backs, a front back is designed for comfort, and a back is designed for stability of a chair back structure, so that the back is generally rigid, only plays a role in supporting the front back and connecting a chair seat, and the chair back is not easy to damage; because the back is rigid, possibly slightly flexible for material reasons, but always lacks a certain deformability, the back cannot be twisted to adapt to the posture of the user when the user leans relaxed to the left or right of the front back; and the back lacks cushioning ability, when the user needs to relax briefly and lean backwards, the user's buttocks have to slide to the front of the seat, even fall out of the seat, and the user experience is poor.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a self-adaptive chair back supporting device, which comprises a chair seat, a back support and a rigid back supporting piece, wherein the back supporting piece is arranged at the front side of the back support and is configured to support the waist and back of a human body; the back support is configured as a main body support of the back support, the back support comprises a flexible support main body, and the lower end of the support main body is provided with a seat connecting part fixedly connected with a seat; a support component for supporting the back support piece is arranged between the bracket main body and the back support piece; because the support main part is tough, so when the back support piece receives the external force of equidirectional, the corresponding distortion deformation takes place for this external force of back support response, and when this external force removed, the deformation was resumeed to the back support thereupon.

The technical scheme of the utility model is realized like this:

an adaptive back support device, comprising:

a back support disposed at a front side of the back support, the back support being configured to support a lumbar portion of a human body; the back support is rigid;

the back support is configured as a main body support of the back support and comprises a support main body, the lower end of the support main body is provided with a chair seat connecting part, and the support main body is flexible;

the chair seat is configured to support a human body to sit, and the chair seat connecting part is fixedly connected with the chair seat;

the upper end of the back support piece is connected with the upper end of the bracket main body, and a support assembly for supporting the back support piece is arranged between the bracket main body and the back support piece;

when the left side or the right side of the back support piece is subjected to external force and twisted, the back support frame responds to the external force to generate corresponding twisting deformation, and when the external force is removed, the back support frame restores the deformation and the back support piece restores the initial position. The back support uses the toughness material to make, is guaranteeing to back support piece support and with the firm prerequisite of being connected of seat support under, the support main part has bending deformation's ability, can produce the function of deformation in order to reach the self-adaptation along with the user leans on the different gestures on back support piece, has improved the use travelling comfort of seat.

Preferably, when the back support is subjected to an overall rearward external force, the back support undergoes a bending deformation of reclining in response to the external force, and when the external force is removed, the back support recovers deformation therewith. The back support has certain leaning and leaning buffer, so that the user can be deformed when the user relaxes for a short time and leans backwards, the hip of the user can not slide forwards, and the user experience is good.

Preferably, the bracket main body is a plate-shaped body with a wide upper part and a narrow lower part, a hollow part is arranged at the upper half part of the bracket main body, and the bracket main body around the hollow part forms a square frame. The main body of the plate-shaped bracket with the wide upper part and the narrow lower part is easier to deform at the narrow part; the square frame enables the wide part to stabilize the connection between the back support and the support body and enhance the left-right twisting capability.

Preferably, the middle portion of the stent body has a forwardly convex curvature. This makes the stent body more prone to bending backwards.

Preferably, a transition part is formed at the joint of the support main body and the seat connecting part, the transition part has a backward convex bending radian, a square groove is formed in the lower surface of the transition part, and a plurality of reinforcing ribs are longitudinally arranged in parallel in the square groove. The bending of transition portion and square groove have all strengthened the deformability of support subject, and the strengthening rib that sets up in the square groove has consolidated the intensity of transition portion, prevents that support subject from bending backward, and transition portion fracture.

As preferredly, the front surface of the bracket main body is close to the edge and is provided with an inverted U-shaped groove along the edge profile, the front surface of the lower half part of the bracket main body between the inverted U-shaped grooves is provided with a groove, and the inverted U-shaped groove and one end of the groove both extend to a transition part protruding backwards. The thickness that falls U type groove and recess all attenuate support subject has strengthened deformability, and one end between them all extends to transition portion, makes support subject's bending change take place in transition portion to make support subject and back of the body support piece can wholly twist reverse or incline and face upward.

Preferably, the inverted U-shaped groove and the groove are arranged in a staggered manner with the square groove. Both the U type groove of falling and recess and square groove set up the surface at the equidirectional, and such setting has increased the intensity of transition portion, has lengthened the life of seat, if the U type groove of falling, recess and square groove set up with one side, the transition portion that thickness is thin can be because of the too much fatigue damage of deformation.

Preferably, the back support member includes an upper back assembly and a lower back assembly, one end of the support assembly is connected to the middle lower portion of the front surface of the support body, the other end of the support assembly is connected to the upper back assembly, the upper back assembly and the lower back assembly are connected through a spring steel sheet, and the lower back assembly is bent close to the support body due to the elasticity of the spring steel sheet when being pressed by an external force. This makes the lower back subassembly have the elasticity buffering to the waist, has improved the use travelling comfort.

Preferably, the supporting component is a telescopic supporting component, the upper end of the back supporting piece is rotatably connected with the upper end of the support main body, when the lower end of the back supporting piece rotates, the lower end of the back supporting piece moves in different seat depths relative to the seat, and the telescopic supporting component stretches and retracts accordingly and supports the back supporting piece to stay at the corresponding seat depth position. This makes the back support have the effect of following back and supporting the waist, has improved the use travelling comfort.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

the utility model provides a connection structure of back of chair subassembly compares prior art:

1. the back support uses the toughness material to make, guarantees to back support piece support and with the firm prerequisite of being connected of seat support under, the support main part has bending deformation's ability, can produce the function of deformation in order to reach the self-adaptation along with the user leans on different gestures on back support piece, has realized the back support simultaneously and has controlled the function of twisting and heeling in, has improved the use travelling comfort of seat.

2. The structural design of the support main body not only enhances the deformation capacity of the support main body, but also improves the structural strength of the support main body.

3. When the double-back type back support piece is adopted, the upper back component and the lower back component are connected through the spring steel sheet, the lower back component has elastic buffering on the waist, and the use comfort is improved.

4. When the supporting component is a telescopic supporting component, the back supporting component has the effect of tracing back and supporting waist, and the comfort is improved.

Drawings

FIG. 1 is a side view of a back support, back support and seat assembly in an embodiment of the present invention;

FIG. 2 is a side view of the back support and back rest in an embodiment of the present invention when a user is seated;

FIG. 3 is a side view of the back support and back rest in an embodiment of the present invention when a user reclines;

fig. 4 is a schematic perspective view of a back frame according to an embodiment of the present invention;

fig. 5 is a front view of a back bracket in an embodiment of the present invention;

fig. 6 is a side view of a back support in an embodiment of the invention;

fig. 7 is a schematic perspective view of a back support according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of an embodiment of the present invention when an upper back assembly and a lower back assembly are combined;

fig. 9 is a side view of the back support seat depth adjustment in an embodiment of the present invention;

fig. 10 is a side view of the back support and back support with a user leaning to the left of the back support in an embodiment of the invention.

The figures are numbered: a back support 1; a back support 2; a seat 127; a holder main body 160; a seat connecting portion 161; a hollowed-out portion 162; a square frame 163; a waist-contracting portion 164; a left vertical bar 165; a right vertical bar 166; an upper cross bar 167; a transition portion 168; a square groove 169; an inverted U-shaped groove 170; a groove 171; a reinforcing rib 172; a telescoping support assembly 101; an upper back assembly 125; a lower back assembly 126; spring steel plates 173.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1, the present invention provides a self-adaptive chair back supporting device, which comprises a chair seat 127, a back support 1 and a rigid back support 2, wherein the back support 2 is arranged at the front side of the back support 1, the back support 2 is configured to support the waist and back of a human body, and a back cushion can be wrapped or a mesh can be laid at the front side of the back support 2; the back support 1 is configured as a main body support of the back support 2, the back support 1 comprises a flexible support main body 160, and the lower end of the support main body 160 is provided with a seat connecting part 161 which is fixedly connected with the seat 127; a support assembly for supporting the back support 2 is provided between the supporter main body 160 and the back support 2.

As shown in fig. 2 and 3, since the frame body 160 is flexible, when the back support 2 is subjected to external forces in different directions, the back support 1 is deformed in response to the external forces, and when the external forces are removed, the back support 1 is deformed and the back support 2 returns to the original position; when the user's back leans on the back support 2, the user leans to the left and right sides or leans backward for a more comfortable sitting posture, and at this time, the pressure of the back is transmitted from the back support 2 to the stand body 160, and the stand body 160 is deformed correspondingly by the force, so that the back support 2 can move along with the back; the seat connecting portion 161 and the holder main body 160 are integrally formed, and both are made of a material having toughness, but the thickness of the seat connecting portion 161 is lower than that of the holder main body 160 and is substantially rigid because the functions to be achieved are different.

As shown in fig. 4-7, 2 and 10, the bracket body 160 is a plate-shaped body with a wide top and a narrow bottom, a hollow part 162 is formed at the wider part of the bracket body 160, namely, the top half part, the bracket body 160 around the hollow part 162 forms a square frame 163, and the back support 2 is connected to the square frame 163; the narrower part of the bracket main body 160 is a waist-contracting part 164 which is positioned below the square-shaped frame 163, and the width of the waist-contracting part 164 is gradually narrowed from top to bottom; the frame 163 is designed to make the wider middle of the bracket body 160 hollow and more easily twist and deform, and the waist portion 164 is designed to make the lower end of the bracket body 160 more easily twist and deform, specifically:

the square frame 163 comprises a left vertical rod 165, a right vertical rod 166 and an upper cross rod 167, the upper ends of the left vertical rod 165 and the right vertical rod 166 are respectively connected with the left end and the right end of the upper cross rod 167, the lower ends of the left vertical rod 165 and the right vertical rod 166 are connected with a waist-contracting portion 164, and the left vertical rod, the right vertical rod, the upper cross rod 167 and the waist-contracting portion 164 enclose a square hollow, namely the hollow portion 162; when a user leans against the left side of the back support 2, in order to enable the back support 2 to move along the waist and back, the back support 2 and the bracket main body 160 need to be twisted leftwards and backwards integrally, at this time, the left end of the upper cross rod 167 inclines to approach the longitudinal center line of the seat 127 in the back-down direction, the left and right vertical rods 166 are twisted accordingly, and the waist-contracting portion 164 is twisted in the same direction as the moving direction of the upper cross rod 167 to achieve the above effect; when the user's lumbar and back are separated from the back support 2, the stand main body 160 is restored to its original state, and the back support 2 is returned to its original position; the user leans against the right side of the back support 2 for the same reason and will not be described in detail.

As shown in fig. 2, 3 and 6, a transition portion 168 is formed at the connection position of the bracket main body 160 and the seat connecting portion 161, the transition portion 168 has a backward convex curvature, a square groove 169 is formed on the lower surface of the transition portion 168, and the upper end of the waist-contracting portion 164 has a forward convex curvature; thus, the transition portion 168 and the waist-receiving portion 164 are an S or mirror image S when viewed from the side, which makes it easier for the user to flex when the user is briefly relaxed and leans back, so that the user 'S hips do not slide forward on the seat 127, which improves comfort and improves the user' S experience.

As shown in fig. 4, 5 and 7, the left and right vertical rods, the upper cross bar 167 and the waist-closing portion 164 are provided at both sides thereof with inverted U-shaped grooves 170 along the contour of the front surface of the stand main body 160, the middle portion of the waist-closing portion 164 is provided with a groove 171, and one ends of the inverted U-shaped grooves 170 and the groove 171 extend to a transition portion 168 protruding rearward, which further enhances the bending capability of the stand main body 160.

In order to reinforce the structural strength of the bracket main body 160 to ensure the safety thereof, the following arrangement is made: the inverted U-shaped groove 170 and the groove 171 are arranged on different surfaces in a staggered manner with the square groove 169, and a plurality of reinforcing ribs 172 are longitudinally arranged in the square groove 169 side by side.

In addition to the above-described design of the back support 1 which increases the overall comfort of the seat, this effect can also be achieved by:

as shown in fig. 8 and 9, the back support 2 includes an upper back assembly 125 and a lower back assembly 126; the support component is a telescopic support component 101, one end of the telescopic support component 101 is connected to the middle lower part of the front surface of the waist contracting part 164, the other end of the telescopic support component 101 is connected to the upper back component 125, the upper back component 126 and the lower back component 126 are connected through a spring steel sheet 173, and the lower back component 126 is bent close to the bracket main body 160 due to the elasticity of the spring steel sheet 173 when being pressed by external force; the upper end of the upper back assembly 125 is rotatably connected with the upper end of the bracket main body 160, when the lower end of the lower back assembly 126 rotates, the lower end of the lower back assembly 126 moves at different seat depths relative to the seat 127, and the telescopic supporting assembly 101 is extended and contracted accordingly and supports the back support 2 to stay at the corresponding seat depth position; a gas rod may be used as the telescopic support assembly 101.

Claims

1. An adaptive back support device, comprising:

when the left side or the right side of the back support piece is subjected to external force and twisted, the back support frame responds to the external force to generate corresponding twisting deformation, and when the external force is removed, the back support frame restores the deformation and the back support piece restores the initial position.

2. The adaptive seatback support apparatus of claim 1, wherein: when the back support piece is subjected to integral backward external force, the back support responds to the external force to generate bending deformation of backward leaning, and when the external force is removed, the back support restores to deform.

3. The adaptive seatback support apparatus of claim 1, wherein: the support main body is a plate-shaped body with a wide upper part and a narrow lower part, a hollow part is arranged at the upper half part of the support main body, and the support main body around the hollow part forms a square frame.

4. The adaptive seatback support apparatus of claim 3, wherein: the middle part of the bracket main body is provided with a bending radian which is convex forwards.

5. The adaptive seatback support apparatus of claim 1, wherein: the support main part with the junction of seat support connecting portion form transition portion, transition portion has bellied crooked radian backward, has seted up the square groove at transition portion lower surface, the square groove in vertically be equipped with a plurality of strengthening ribs side by side.

6. The adaptive seatback support apparatus of claim 5, wherein: the front surface of support subject is close to the edge and has seted up the type groove of falling U along edge profile, and the front surface at the support subject lower half between the type groove of falling U has seted up the recess, and the one end of falling U type groove and recess all extends to bellied transition portion backward.

7. The adaptive seatback support apparatus of claim 6, wherein: the inverted U-shaped groove and the groove are arranged in a staggered way with the square groove.

8. The adaptive seatback support apparatus of claim 1, wherein: the back support piece comprises an upper back component and a lower back component, one end of the support component is connected to the middle lower part of the front surface of the support main body, the other end of the support component is connected to the upper back component, the upper back component and the lower back component are connected through a spring steel sheet, and the lower back component is bent close to the support main body due to the elasticity of the spring steel sheet when being pressed by external force.

9. The adaptive seatback support apparatus of claim 1, wherein: the supporting component be flexible supporting component, back of the body support piece upper end rotates with support main part upper end to be connected, when back of the body support piece lower extreme rotated, back of the body support piece lower extreme removed in different seat depths for the seat support, flexible supporting component is flexible thereupon and support back of the body support piece and stop in corresponding seat depth position department.