CN118021085A - Ergonomic chair - Google Patents

Abstract

The application discloses an ergonomic chair, which comprises a chair back support, a back support and a support adjusting assembly, wherein a triangular link mechanism is formed among the back support, the chair back support and the support adjusting assembly; when the chair back supporting piece rotates, the supporting and adjusting component synchronously rotates and the length is adjusted; at least one of the back support member and the support adjustment assembly is made of a material with elastic deformation capability, and when the back support member is subjected to leaning force, the back support member and the support adjustment assembly synchronously rotate backwards, and at least one of the back support member and the support adjustment assembly is elastically deformed. The ergonomic chair provided by the application can be used for enabling a user to freely adjust the position of the chair back supporting piece; the support adjusting component is hidden at the rear side of the chair back supporting piece, and does not have abrupt sense in appearance; when the chair back supporting piece is subjected to leaning force, the chair back supporting piece and the supporting adjusting component synchronously swing backwards, at least one of the chair back supporting piece and the supporting adjusting component generates elastic deformation, and better elastic support is provided.

Description

Ergonomic chair

Technical Field

The invention relates to the technical field of seats in general, in particular to an ergonomic seat.

Background

Lumbar vertebrae are called "bridges" for human health, which play an important role in bearing the weight of the upper body of the human body, and most of the functional actions applied to the mobility of the trunk of the human body are completed by the movement of the thoracic vertebrae under the condition of stabilizing the lumbar vertebrae. Once the lumbar vertebrae are in question, the normal operation of the whole body is affected. However, most office workers are used to sit for a long time to work at present, and the lumbar muscle is extremely easy to generate strain under the condition of no support, so that the lumbar vertebra is bent forwards, and the lumbar disc herniation isosceles vertebral disease is caused.

In order to protect the health of the waist, the existing seat is generally provided with a lumbar support at the backrest, and when a user sits on the seat, the lumbar support supports and fits the waist of the user, so that the fatigue of the waist is effectively relieved, and the lumbar is prevented from bending outwards. Meanwhile, in order to reduce the compression to the waist muscle and also to provide comfortable sitting experience, the existing lumbar support is generally arranged into a frame structure, and a mesh cloth is paved on the frame, so that the mesh cloth can generate elastic deformation when leaning from the waist of a user, and elastic support is provided for the user by means of reset elastic force.

But if only rely on the elastic support waist of screen cloth, the elastic deformation that the screen cloth can produce is less to make the elastic support power that the waist leaned on less, waist muscle still receives the oppression that the waist leaned on easily, produces waist blood after sitting for a long time easily and does not circulate, and then leads to waist numbness, tired, influences the protection effect to the waist.

Aiming at the problems, the prior art discloses an ergonomic chair (publication number: CN 214631140U), which divides a chair back into an upper back and a lower back, wherein the upper back and the lower back can rotate respectively, an upper back rotating point is arranged above, a lower back rotating point is arranged below, an upper back abutting part and a lower back abutting part jointly rotate backwards, and the rotating position is positioned at the center of the back of a human body. Therefore, the chair back is good in activity performance by rotating the upper back and the lower back, can adapt to changeable waist and back curves of a human body, not only effectively supports the waist, but also is higher in comfort. But this solution has the following drawbacks: the lumbar vertebrae structure is more or less different among different people, when sitting on the seat, the height of the lumbar vertebrae and the radian of lumbar vertebrae bending are also different among different people, and the lumbar support can not adjust the position and the rotating angle in the initial state to better fit the lumbar positions of different people, so that the protection effect on the lumbar region is weakened.

The prior art also discloses a waist rest depth adjusting device (publication number: CN 114009992A), the waist rest is rotationally connected on the back support, a longitudinal supporting component is arranged between the waist rest and the back support, and the supporting component can slide up and down relative to the sliding supporting seat, so that the waist rest can be positioned at a back position or a forward ejection position relative to the back support, and the supporting component can be locked at different initial positions by controlling the adjusting component, thereby achieving the effect of adjusting the waist rest to push up the waist, and being better suitable for the waist of different users. However, this solution has the following drawbacks: the support part supports the lumbar support, the support part adopts a spring steel plate and is arranged between the lumbar support and the back support, and the spring steel plate is easy to be exposed out of the lumbar support in the use process of the seat, so that the support part between the lumbar support and the back support has larger abrupt sense in appearance, and the aesthetic property of the seat is influenced; in addition, the supporting component and the adjusting component are complex in structure, and are troublesome to use both in processing and manufacturing and in assembling the seat by a user.

Disclosure of Invention

In view of the foregoing drawbacks and deficiencies in the prior art, it is desirable to provide an ergonomic chair in which the back support member is rotatable back and forth in response to changes in length of the support adjustment assembly, such that a user can adjust the position of the back support member according to individual use needs; the support adjusting component is hidden at the rear side of the chair back supporting piece, so that the chair back supporting piece is not abrupt in appearance and is more attractive; the triangle link mechanism has simple structure, so that each part of the seat is easy to process and manufacture and is easy to assemble by a user; and when the chair back supporting piece is subjected to leaning force, the chair back supporting piece and the supporting and adjusting component synchronously swing backwards, at least one of the chair back supporting piece and the supporting and adjusting component generates elastic deformation, so that the waist is softer and more comfortable to lean, and better elastic support is provided through the reset elastic force of the chair back supporting piece or the supporting and adjusting component.

The effect of the invention is realized as follows:

In a first aspect, the application provides an ergonomic chair, comprising a back support, a back support and a support adjustment assembly, wherein the upper end of the back support is hinged to the upper end of the back support, one end of the support adjustment assembly is hinged to the lower end of the back support, the other end of the support adjustment assembly is hinged to the lower end of the back support, and a triangular link mechanism is formed among the back support, the back support and the support adjustment assembly; when the chair back supporting piece rotates, the supporting and adjusting component synchronously rotates and the length is adjusted; at least one of the chair back supporting piece and the supporting and adjusting component is made of materials with elastic deformation capacity, when the chair back supporting piece is subjected to leaning force, the chair back supporting piece and the supporting and adjusting component synchronously rotate backwards, and at least one of the chair back supporting piece and the supporting and adjusting component is elastically deformed so as to generate reset elastic force for the waist of a user.

Further, back of the chair support piece includes back of the body support piece and waist support piece, goes up back of the body support piece and waist support piece formula structure as an organic whole for back of the chair support piece overall structure is more stable, also makes the user when using the seat simultaneously, and user's waist and back can both receive back of the chair support piece's elastic support, thereby bring comparatively comfortable sitting experience.

Further, an included angle is formed between the whole chair back support piece and the back support frame, the included angle ranges from 15 degrees to 40 degrees, and the chair back support piece can be attached to and support the waist and the back of a user no matter the chair back support piece rotates to the maximum position or the minimum position when the user sits.

In a second aspect, the application provides an ergonomic chair, comprising a back support, a back support and a support adjustment assembly, wherein the back support comprises an upper back support and a lumbar support, the upper end of the upper back support is fixedly connected with the upper end of the back support, the upper end of the lumbar support is hinged to the lower end of the upper back support, one end of the support adjustment assembly is hinged to the lower end of the back support, the other end of the support adjustment assembly is hinged to the lower end of the lumbar support, and a triangular link mechanism is formed among the back support, the lumbar support and the support adjustment assembly; when the lumbar support rotates, the support adjusting component synchronously rotates and the length is adjusted; at least one of the lumbar support and the support adjustment assembly is made of materials with elastic deformation capability, when the lumbar support is subjected to leaning force, the lumbar support and the support adjustment assembly synchronously rotate backwards, and at least one of the lumbar support and the support adjustment assembly is elastically deformed so as to generate reset elastic force for the waist of a user. Under split type structure, lumbar support piece's rotation range is bigger, and adjusts the operation lighter, and the rotation process is more nimble.

Further, a connecting seat is arranged on the front end face of the back support, and the support adjusting component is hinged to the connecting seat; when the support adjusting component rotates forwards, the clamping angle between the support adjusting component and the back support is increased, and a gap is formed between the hinge ends of the support adjusting component and the connecting seat, so that when the chair back supporting component is subjected to leaning force, the support adjusting component swings backwards to form an avoidance space by using the gap. The support adjusting component is rotated backwards by utilizing the gap until the groove surface of the rotating groove is attached, so that the back supporting piece and the length adjusting piece can be rotated backwards by the gap, and the touch feeling of the waist is softer and more comfortable when a user leans.

Further, the hinge position of the support adjusting component and the back support is higher than the lower end position of the back support, so that the support adjusting component is hidden at the inner side of the back support in appearance and does not have abrupt sense.

Further, the waist support piece is of a 'mouth' -shaped frame structure, the 'mouth' -shaped frame structure is coated with mesh cloth, the waist support piece comprises arc-shaped parts at the left end and the right end, the arc-shaped parts are of arc-shaped structures with the upper parts protruding forwards, the shape of the waist support piece is more close to the structure of bending lumbar vertebrae of a human body, the waist support piece can be better attached to the waist of a user, and the protection effect on the waist is improved.

Further, the support adjusting assembly comprises a mounting piece, a gear piece and a stop piece, one end of the mounting piece is hinged to the back support, a sliding groove is concavely formed in the other end of the mounting piece, and the gear piece is in sliding fit with the sliding groove; one side of the gear piece is provided with a plurality of gear grooves along the length direction, the stop piece is convexly extended with a clamping head, and the clamping head is in clamping fit with the gear grooves; the stop piece is movably arranged on the mounting piece, so that the support adjusting assembly has a switchable clamping state and a resetting state, when the support adjusting assembly is in the clamping state, the clamping head is clamped in the gear groove, and the gear piece and the mounting piece are relatively fixed; when in a reset state, the clamping head is separated from the gear groove, and the gear piece can slide back and forth relative to the mounting piece. Through dop joint or break away from the gear groove for can be fixed or slip relatively between gear piece and the installed part, adjust the length that supports adjusting part from this, the adjustment process is comparatively simple and convenient.

Further, the stop piece comprises a rotating part positioned at the middle part, a first swinging part and a second swinging part which are respectively positioned at two sides, the rotating part is rotationally connected with the mounting piece, and the clamping head is connected with the bottom end of the first swinging part; an elastic piece is connected between the second swinging part and the mounting piece, and the elastic piece pushes the second swinging part, so that the first swinging part at the other end of the stop piece always has a downward rotation trend, and the clamping head always has a movement trend towards the gear groove. The clamping head can be firmly clamped in the gear groove, and the stability of the supporting and adjusting assembly is guaranteed.

Further, one side of the clamping head and the gear groove, which is close to the mounting piece, is an inclined surface, when the chair back supporting piece rotates forward, the clamping head slides out of the gear groove along the inclined surface and is sequentially clamped with a plurality of gear grooves to realize gear adjustment, and when the chair back supporting piece rotates forward, the gear of the supporting and adjusting component can be automatically adjusted without operating the stopping piece, so that the adjusting process of the chair back supporting piece is simpler and more convenient.

Further, at least one of the left side and the right side of the stop piece is convexly extended with a handle, and a user can operate the stop piece through the handle, so that the clamping state or the resetting state of the support adjusting assembly can be conveniently switched.

According to the ergonomic chair provided by the application, the chair back support, the back support and the support adjusting assembly are mutually hinged to form the triangular link mechanism, and the chair back support can rotate back and forth in cooperation with the length change of the support adjusting assembly, so that a user can adjust the position of the chair back support according to personal use requirements; the support adjusting component is hinged to the lower end of the chair back supporting piece, so that the support adjusting component is always hidden at the rear side of the chair back supporting piece in the use process, and the chair back supporting piece is not abrupt in appearance and is attractive; the triangle link mechanism has simple structure, so that each part of the seat is easy to process and manufacture and is easy to assemble by a user; and when the chair back support piece is subjected to leaning force, the chair back support piece and the support adjusting assembly synchronously swing backwards, at least one of the chair back support piece and the support adjusting assembly generates elastic deformation, and the waist of a user can lean backwards for a certain distance along with the chair back support piece, so that the waist is softer and more comfortable to lean against, and better elastic support is provided through the reset elastic force of the chair back support piece or the support adjusting assembly.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

Fig. 1 is a schematic perspective view of an ergonomic chair according to an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating the movement of the back support during the adjustment process when the back support is in an integrated structure according to the embodiment of the present application;

FIG. 3 is a schematic diagram illustrating the movement of the back support during the adjustment process when the back support provided in the embodiment of the present application is of a split type structure;

FIG. 4 is a schematic view illustrating a change in shape of a back support according to an embodiment of the present application when the back support is deformed by leaning;

FIG. 5 is a schematic cross-sectional view of a support adjustment assembly and a back bracket according to an embodiment of the present application;

FIG. 6 is a schematic view of the connection between a lumbar support and a back support provided by an embodiment of the present application;

Fig. 7 is a schematic perspective view of a support adjustment assembly according to an embodiment of the present application;

FIG. 8 is a schematic perspective view of a stop member according to an embodiment of the present application;

FIG. 9 is a schematic view of a connection structure between a gear member and a mounting member provided by an embodiment of the present application;

FIG. 10 is a schematic cross-sectional view of a support adjustment assembly according to an embodiment of the present application;

fig. 11 is a schematic view of a connection structure between a lumbar support member and a gear member provided by an embodiment of the present application.

The reference numerals are as follows: the seat back support device comprises a seat back support piece, a 2-back support frame, a 3-support adjusting assembly, an upper back support piece, a 120-waist support piece, a 121-arc-shaped portion, a 210-connecting seat, a 211-vacancy, a 212-rotating groove, a 310-mounting piece, a 311-sliding groove, a 312-elastic piece, a 313-connecting groove, a 314-first mounting hole, a 315-second mounting hole, a 316-through hole, a 320-gear piece, a 321-gear groove, a 330-stop piece, a 331-clamping head, a 332-rotating portion, a 333-first swinging portion, a 334-second swinging portion and a 335-handle.

Description of the embodiments

The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.

Referring to fig. 1-11, an ergonomic chair according to an embodiment of the present application includes a back support 1, a back support 2, and a support adjustment assembly 3, wherein an upper end of the back support 1 is hinged to an upper end of the back support 2, one end of the support adjustment assembly 3 is hinged to a lower end of the back support 2, and the other end of the support adjustment assembly 3 is hinged to a lower end of the back support 1, and a triangle link mechanism is formed among the back support 2, the back support 1, and the support adjustment assembly 3; when the chair back support 1 rotates, the support adjusting component 3 synchronously rotates and adjusts the length; at least one of the back support 1 and the support adjusting assembly 3 is made of a material with elastic deformation capability, when the back support 1 is subjected to leaning force, the back support 1 and the support adjusting assembly 3 synchronously rotate backwards, and at least one of the back support 1 and the support adjusting assembly 3 is elastically deformed so as to generate resetting elastic force for the waist of a user.

In the embodiment, the chair back support 1, the back support 2 and the support adjusting assembly 3 are mutually hinged to form a triangular link mechanism, and the chair back support 1 can rotate back and forth in coordination with the length change of the support adjusting assembly, so that a user can adjust the position of the chair back support 1 according to personal use requirements; the support adjusting component 3 is hinged to the lower end of the chair back supporting piece 1, so that the support adjusting component 3 is always hidden at the rear side of the chair back supporting piece 1 in the use process, and the chair back supporting piece is not abrupt in appearance and is more attractive; the triangle link mechanism has simple structure, so that each part of the seat is easy to process and manufacture and is easy to assemble by a user; and, when the back support 1 is subjected to leaning force, the back support 1 and the support adjusting assembly 3 swing backwards synchronously, and at least one of the two is elastically deformed, so that the waist of a user can lean backwards along with the back support 1 for a certain distance, the waist feel is softer and more comfortable when leaning, and better elastic support is provided by the reset elastic force of the back support 1 or the support adjusting assembly 3.

Preferably, the back support member 1 and the support adjustment assembly 3 are made of materials with elastic deformation capability, so that when the back support member 1 is subjected to leaning force, the back support member 1 and the support adjustment assembly can elastically deform, thereby providing powerful elastic support.

In some embodiments of the present application, the back support 1 includes an upper back support 110 and a lumbar support 120, the upper back support 110 and the lumbar support 120 being of unitary construction. Through setting up back of the chair support piece 1 as an organic whole formula structure for back of the chair support piece 1 overall structure is more stable, also makes the user when using the seat simultaneously, and user's waist and back can both receive back of the chair support piece 1's elastic support, thereby bring comparatively comfortable sitting experience.

The lumbar support 120 has an arc structure with a middle portion protruding forward, so that the shape of the lumbar support 120 is more fit with the natural bending structure of the lumbar spine of the user, and the ejection effect of the lumbar support 120 on the lumbar of the user is better.

In some embodiments of the present application, the back support 1 forms an angle with the back support 2, which is in the range of 15-40 degrees. Therefore, when a user sits, the chair back support piece 1 can be attached to and support the waist and the back of the user no matter the chair back support piece rotates to the maximum position or the minimum position, and the supporting effect of the chair is guaranteed.

The ergonomic chair provided by the embodiment of the present application further comprises a solution of providing the upper back support 110 and the lumbar support 120 as a split structure, in particular:

The embodiment of the application provides an ergonomic chair, which comprises a back bracket 2, a back support 1 and a support adjusting component 3, wherein the back support 1 comprises an upper back support 110 and a waist support 120, the upper end of the upper back support 110 is fixedly connected with the upper end of the back bracket 2, the upper end of the waist support 120 is hinged with the lower end of the upper back support 110, one end of the support adjusting component 3 is hinged with the lower end of the back bracket 2, the other end of the support adjusting component 3 is hinged with the lower end of the waist support 120, and a triangular connecting rod mechanism is formed among the back bracket 2, the waist support 120 and the support adjusting component 3; when the lumbar support 120 rotates, the support adjustment assembly 3 rotates synchronously and the length is adjusted; at least one of the lumbar support 120 and the support adjustment assembly 3 is made of a material having elastic deformation capability, when the lumbar support 120 is subjected to leaning force, the lumbar support 120 and the support adjustment assembly 3 synchronously rotate backward, and at least one of the lumbar support 120 and the support adjustment assembly 3 is elastically deformed to generate restoring elastic force to the waist of the user.

In this embodiment, by arranging the back support 1 in a split structure, the upper back support 110 is fixedly connected to the back support 2, and the lumbar support 120 is hinged to the upper back support 110, so that the support adjustment assembly 3 stretches and contracts by the same distance as compared with the integrated back support 1, and in the split structure, the rotation range of the lumbar support 120 is larger, so that the ejection effect on the lumbar of the user is better; moreover, only the lumbar support 120 with a smaller rotating structure is needed, so that the adjustment operation of the chair back support 1 is lighter, and the rotation process of the lumbar support 120 is more flexible.

In some embodiments of the present application, the front end surface of the back bracket 2 is provided with a connection seat 210, and the support adjusting assembly 3 is hinged to the connection seat 210; when the support adjusting component 3 rotates forwards, the clamping angle between the support adjusting component 3 and the back support 2 becomes larger, and a gap 211 is formed between the support adjusting component 3 and the hinged end of the connecting seat 210 and between the support adjusting component and the connecting seat 210, and when the gap 211 enables the chair back supporting piece 1 to bear leaning force, the support adjusting component 3 swings backwards to form an avoidance space by using the gap 211.

Wherein, the front end surface of the connecting seat 210 is concavely provided with an arc-shaped rotating groove 212, and the supporting and adjusting component 3 is hinged with two side walls of the rotating groove 212 and can rotate around the arc-shaped groove surface back and forth; when the chair back support 1 rotates forwards, the support adjusting assembly 3 is driven to rotate forwards, and a gap 211 is formed by an included angle between the bottom surface of the support adjusting assembly 3 and the groove surface of the rotating groove 212; when the back support member 1 is stressed, the back support member 1 has a tendency to rotate backwards, and then the support adjustment assembly 3 is driven to have a tendency to rotate backwards, and as the gap 211 exists between the support adjustment assembly 3 and the rotation groove 212, the support adjustment assembly 3 can rotate backwards until the gap 211 is attached to the groove surface of the rotation groove 212, and the gap 211 is eliminated, so that the back support member 1 and the length adjustment member 110 can rotate backwards by the distance of the gap 211, and the waist touch feeling is softer and more comfortable when a user leans.

In some embodiments of the present application, the hinge position of the support adjustment assembly 3 and the back bracket 2 is higher than the lower end position of the seatback support 1. The triangular connecting rod mechanism that constitutes between the back of the chair support 1, the back support 2 and the support adjustment subassembly 3 is obtuse triangle structure, and then makes in appearance, supports adjustment subassembly 3 and hides in the inboard of back of the chair support 1, supports adjustment subassembly 3 in the adjustment process and can not expose back of the chair support 1 outward, does not have abrupt sense to make the seat whole more pleasing to the eye.

In some embodiments of the present application, the lumbar support 120 is a "mouth" shaped frame structure, the mesh cloth is wrapped on the "mouth" shaped frame structure, the lumbar support 120 includes arc portions 121 at the left and right ends, and the arc portions 121 are in an arc structure with the upper portions protruding forward, so that the shape of the lumbar support 120 is closer to the structure of bending lumbar vertebrae of a human body, the lumbar support 120 can better fit the lumbar region of a user, and the protection effect on the lumbar region is improved.

The lumbar support 120 is made of a material with elastic deformation capability, and when the lumbar support 120 is subjected to leaning force, the arc structure of the arc portion 121 also makes the arc portion 121 undergo smaller extrusion radian and two ends extend outwards, so that the overall length of the lumbar support 120 is longer, and the support adjustment assembly 3 is effectively driven to rotate backwards together and deform.

In some embodiments of the present application, the support adjustment assembly 3 includes a mounting member 310, a gear member 320 and a stop member 330, one end of the mounting member 310 is hinged to the back bracket 2, the other end of the mounting member 310 is concavely provided with a sliding groove 311, and the gear member 320 is slidably matched with the sliding groove 311; a plurality of gear grooves 321 are arranged on one side of the gear piece 320 along the length direction, a clamping head 331 protrudes from the stop piece 330, and the clamping head 331 is in clamping fit with the gear grooves 321; the stop member 330 is movably arranged on the mounting member 310, so that the support adjusting assembly 3 has a switchable clamping state and a resetting state, when the support adjusting assembly is in the clamping state, the clamping head 331 is clamped in the gear groove 321, and the gear member 320 and the mounting member 310 are relatively fixed; when in the reset state, the chuck 331 is disengaged from the gear slot 321, and the gear member 320 can slide back and forth relative to the mounting member 310.

In this embodiment, the gear member 320 and the mounting member 310 can be relatively fixed or slide by the clamping head 331 being clamped to or separated from the gear slot 321, so that the length of the supporting and adjusting assembly 3 is adjusted, the overall structure is simpler, and the adjusting process is simpler and more convenient.

Preferably, two gear slots 321 are provided on the gear member 320, so that the support adjustment assembly 3 has two adjustable gears, and meets the use requirement of a user. Of course, in other embodiments of the present application, the number of the gear slots 321 on the gear member 320 may be 3, 4, etc.

In some embodiments of the present application, the stop member 330 includes a rotating portion 332 located at a middle portion, a first swinging portion 333 and a second swinging portion 334 located at two sides respectively, the rotating portion 332 is rotatably connected to the mounting member 310, and the chuck 331 is connected to a bottom end of the first swinging portion 333; an elastic piece 312 is connected between the second swinging part 334 and the mounting piece 310, and the elastic piece 312 pushes the second swinging part 334, so that the first swinging part 333 at the other end of the stop piece 330 always has a downward rotation trend, and further the chuck 331 always has a movement trend towards the gear groove 321.

In this embodiment, the chuck 331 always has a trend of moving towards the gear groove 321 under the pushing of the elastic member 312, so that the chuck 331 can be firmly clamped in the gear groove 321, when the backrest support 1 is prevented from being leaned, the chuck 331 is separated from the gear groove 321 to cause the backrest support 1 to rotate backwards, and the stability of the support adjusting assembly 3 is ensured.

Wherein, the upper end of the mounting member 310 is recessed downwards to form a connecting groove 313, the stop member 330 is mounted in the connecting groove 313, and the rotating part 332 is hinged to the side wall of the connecting groove 313; a first mounting hole 314 is concavely formed in the end surface of the connecting groove 313 opposite to the second swinging part 334, a second mounting hole 315 is concavely formed in the bottom surface of the second swinging part 334, and two ends of the elastic piece 312 are respectively mounted in the first mounting hole 314 and the second mounting hole 315; the end surface of the connecting groove 313 opposite to the clamping head 331 is provided with a through hole 316 in a penetrating way, and the clamping head 331 passes through the through hole 316 and is matched with the sliding groove 311 in the mounting piece 310 in a clamping way.

Preferably, the elastic member 312 is a spring, which not only has better elasticity, but also has better ductility and lower cost. Of course, in other embodiments of the present application, the elastic member 312 may be made of rubber, elastic sheet, etc.

In some embodiments of the present application, the chuck 331 and the gear groove 321 are inclined on a side close to the mounting member 310, so that when the back support member 1 rotates forward, the chuck 331 slides out of the gear groove 321 along the inclined surface and is sequentially clamped with a plurality of gear grooves 321 to realize gear adjustment. Thus, when the back support 1 is rotated forward, the gear of the support adjustment assembly 3 can be automatically adjusted without operating the stopper 330, so that the adjustment process of the back support 1 is simpler.

The chuck 331 and the gear groove 321 are perpendicular to one side far away from the mounting member 310, so that when the back support member 1 is subjected to leaning force, the perpendicular to the chuck 331 and the gear groove 321 are mutually abutted, so that the gear member 320 cannot slide relative to the mounting member 310, and the back support member 1 is further restrained from rotating backwards. Therefore, the structure of the supporting and adjusting assembly 3 is more stable, and the clamping head 331 is prevented from being separated from the gear groove 321 when the chair back supporting piece 1 is subjected to leaning force, so that the use of the chair is prevented.

In this embodiment, when the seatback support 1 is pulled forward, the gear member 320 is driven to slide forward relative to the mounting member 310, and the chuck 331 is sequentially engaged with each gear slot 321 along the inclined plane; when the back support 1 is adjusted to a proper position, a user leans against the back support 1, so that the gear piece 320 is driven to have a sliding trend towards the mounting piece 310, and the vertical surfaces of the clamping head 331 and the gear groove 321 are abutted with each other because the support adjusting assembly 3 is in a clamping state, so that the length of the support adjusting assembly 3 is fixed, and the back support 1 is limited to rotate backwards; when the back support member 1 needs to be reset, the stop member 330 is rotated backwards, so that the clamping head 331 is separated from the gear groove 321, the support adjusting assembly 3 is switched to a reset state, the gear member 320 can slide freely relative to the mounting member 310, and the back support member 1 can be reset after being rotated backwards.

In some embodiments of the present application, at least one of the left and right sides of the stop member 330 is protruded with a handle 335, so that a user can operate the stop member 330 through the handle 335 to switch between the locked state and the reset state of the support adjustment assembly 3.

Wherein, preferably, the handle 335 is located at the left side of the first swing portion 333, so that a user can access the handle 335 when adjusting the back support 1. Of course, in other embodiments of the present application, the handle 335 may also be disposed on the left and/or right side of the second swing portion 334.

It is to be understood that the above references to the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are for convenience in describing the present invention and simplifying the description only, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "plurality" is three or more.

The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (11)

1. The ergonomic chair is characterized by comprising a chair back support (1), a back support (2) and a support adjusting assembly (3), wherein the upper end of the chair back support (1) is hinged to the upper end of the back support (2), one end of the support adjusting assembly (3) is hinged to the lower end of the back support (2), the other end of the support adjusting assembly (3) is hinged to the lower end of the chair back support (1), and a triangular connecting rod mechanism is formed among the back support (2), the chair back support (1) and the support adjusting assembly (3); when the chair back supporting piece (1) rotates, the supporting and adjusting assembly (3) synchronously rotates and adjusts the length; at least one of the chair back supporting piece (1) and the supporting and adjusting component (3) is made of materials with elastic deformation capacity, when the chair back supporting piece (1) is subjected to leaning force, the chair back supporting piece (1) and the supporting and adjusting component (3) synchronously rotate backwards, and at least one of the chair back supporting piece (1) and the supporting and adjusting component (3) generates elastic deformation so as to generate resetting elastic force for the waist of a user.

2. The ergonomic chair according to claim 1, characterized in that said back support (1) comprises an upper back support (110) and a lumbar support (120), said upper back support (110) and said lumbar support (120) being of unitary construction.

3. Ergonomic seat according to claim 1, characterized in that the back support (1) as a whole forms an angle with the back support (2), said angle ranging from 15 to 40 degrees.

4. The ergonomic chair is characterized by comprising a back support (2), a back support (1) and a support adjusting assembly (3), wherein the back support (1) comprises an upper back support (110) and a waist support (120), the upper end of the upper back support (110) is fixedly connected with the upper end of the back support (2), the upper end of the waist support (120) is hinged to the lower end of the upper back support (110), one end of the support adjusting assembly (3) is hinged to the lower end of the back support (2), the other end of the support adjusting assembly (3) is hinged to the lower end of the waist support (120), and a triangular connecting rod mechanism is formed among the back support (2), the waist support (120) and the support adjusting assembly (3); when the lumbar support (120) rotates, the support adjusting assembly (3) synchronously rotates and adjusts the length; at least one of the lumbar support (120) and the support adjusting assembly (3) is made of materials with elastic deformation capability, when the lumbar support (120) is subjected to leaning force, the lumbar support (120) and the support adjusting assembly (3) synchronously rotate backwards, and at least one of the lumbar support (120) and the support adjusting assembly (3) generates elastic deformation so as to generate resetting elastic force for the waist of a user.

5. Ergonomic seat according to claim 1 or 4, characterized in that the front face of the back-support (2) is provided with a connection seat (210), the support-adjustment assembly (3) being hinged to said connection seat (210); when the support adjusting component (3) rotates forwards, the clamping angle between the support adjusting component (3) and the back support (2) is increased, a gap (211) is formed between the hinge end of the support adjusting component (3) and the connecting seat (210), and when the gap (211) enables the chair back supporting piece (1) to bear leaning force, the support adjusting component (3) swings backwards to utilize the gap (211) to form an avoidance space.

6. Ergonomic seat according to claim 1 or 4, characterized in that the articulation of the support adjustment assembly (3) with the back support (2) is higher than the lower end position of the back support (1).

7. The ergonomic chair according to claim 4, wherein said lumbar support (120) is a "mouth" shaped frame structure, on which mesh cloth is wrapped, said lumbar support (120) comprises arc-shaped portions (121) at left and right ends, said arc-shaped portions (121) having an arc-shaped structure with an upper portion protruding forward.

8. The ergonomic chair according to claim 1 or 4, characterized in that said support adjustment assembly (3) comprises a mounting member (310), a gear member (320) and a stop member (330), one end of said mounting member (310) being hinged to said back bracket (2), the other end of said mounting member (310) being provided with a sliding groove (311) in a recessed manner, said gear member (320) being in sliding engagement with said sliding groove (311); a plurality of gear grooves (321) are arranged on one side of the gear piece (320) along the length direction, clamping heads (331) are protruded out of the stop piece (330), and the clamping heads (331) are in clamping fit with the gear grooves (321); the stop piece (330) is movably arranged on the mounting piece (310), so that the support adjusting assembly (3) is provided with a switchable clamping state and a resetting state, when the support adjusting assembly is in the clamping state, the clamping head (331) is clamped in the gear groove (321), and the gear piece (320) and the mounting piece (310) are relatively fixed; when in a reset state, the clamping head (331) is separated from the gear groove (321), and the gear piece (320) can slide back and forth relative to the mounting piece (310).

9. The ergonomic chair according to claim 8, wherein said stopper (330) comprises a rotation portion (332) at a central portion and a first swing portion (333) and a second swing portion (334) respectively at both sides, said rotation portion (332) being rotatably connected to said mounting member (310), said chuck (331) being connected to a bottom end of said first swing portion (333); an elastic piece (312) is connected between the second swinging part (334) and the mounting piece (310), and the elastic piece (312) pushes the second swinging part (334) so that the first swinging part (333) at the other end of the stop piece (330) always has a downward rotation trend, and then the clamping head (331) always has a movement trend towards the gear groove (321).

10. The ergonomic chair according to claim 8, characterized in that said clamp head (331) and said shift grooves (321) are inclined on the side close to said mounting member (310), so that when said seatback support (1) rotates forward, said clamp head (331) slides out of said shift grooves (321) along the inclined surface and is sequentially clamped with a plurality of said shift grooves (321) to realize shift adjustment.

11. The ergonomic chair according to claim 7, characterized in that at least one of the left and right sides of said stop (330) is provided with a handle (335) protruding therefrom, and a user operates said stop (330) through said handle (335) to facilitate switching between the clamped state and the reset state of the support adjustment assembly (3).