CN219249644U

CN219249644U - Waist rest of chair

Info

Publication number: CN219249644U
Application number: CN202320653849.3U
Authority: CN
Inventors: 廖建甜; 程汉霖; 莫伟
Original assignee: Foshan Hengfa Furniture Technology Co ltd
Current assignee: Foshan Hengfa Furniture Technology Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-06-27
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses a seat lumbar support which is characterized by comprising a back plate, a backrest support seat and a lumbar support assembly, wherein one end of the backrest support seat is hinged with the back plate, and the other end of the backrest support seat is connected with an adjusting air rod; the lumbar support assembly is arranged on the backrest support seat, and an elastic support piece is connected between the lumbar support assembly and the backrest support seat. The utility model has convenient installation and adjustment and good stability.

Description

Waist rest of chair

Technical Field

The utility model relates to the technical field of seats, in particular to a seat lumbar support.

Background

At present, the chair back and the chair seat of many chairs on the market are all of fixed connection structures, and in the leaning and leaning process of a user, the chair back, particularly the waist, is separated from the waist of a human body, and a gap is directly formed, so that the chair loses the support to the waist of the human body, commonly called as 'waist running', the spine of the human body cannot be effectively supported, and a plurality of health problems are easily caused by long-time sitting. For example, chinese patent grant publication No. CN217185374U discloses an adjustable seat waist rest, which is characterized by comprising a back plate, a back rest support seat movably arranged on the back plate, a back rest support frame arranged on the back rest support seat and a headrest support, wherein the back rest support frame comprises an upper swing support plate frame and a lower swing support plate frame, and the upper swing support plate frame and the lower swing support plate frame are respectively hinged with the back rest support seat; an upper slot is arranged in the backrest support seat, and the headrest support is provided with a headrest support plate frame corresponding to the upper slot. The back support frame adopted in the patent structure comprises an upper swinging support plate frame and a lower swinging support plate frame, which can effectively support the waist of a human body, but the upper swinging support plate frame and the lower swinging support plate frame are directly hinged with a back support seat and cannot be adjusted, but the waist lines of the human body with different statures are different, so that the fit of the waist of the human body is not very high, and the waist of the human body needs to be further improved.

Disclosure of Invention

The utility model aims to solve the defects of the prior art, provides the seat lumbar support which is convenient to adjust and good in adaptability, and can improve the fitting degree of a human body and the seat lumbar support.

The utility model adopts the following technical proposal to realize the aim: the seat lumbar support is characterized by comprising a back plate, a backrest support seat and a lumbar support assembly, wherein one end of the backrest support seat is hinged with the back plate, and the other end of the backrest support seat is connected with an adjusting air rod; the lumbar support assembly is arranged on the backrest support seat, and an elastic support piece is connected between the lumbar support assembly and the backrest support seat.

As further explanation of the scheme, the backrest support seat comprises a turnover base and a support plate frame, two ends of the turnover base are respectively hinged with the back plate and the adjusting air rod, and the other end of the adjusting air rod is hinged with the back plate.

Further, be provided with joint positioning mechanism and a plurality of straight line guiding mechanism of group between supporting plate frame and the upset base, joint positioning mechanism includes slip guide slot and the elasticity fixture block of mutually supporting, and the lateral part of slip guide slot is provided with multistage tooth, and elasticity fixture block and tooth activity joint cooperation.

The linear guide mechanism includes a linear guide groove and a slider in sliding contact with the linear guide groove.

The elastic clamping block is connected to the back of the supporting plate frame, and the sliding guide groove is arranged on the overturning base; or the positions of the elastic clamping blocks and the sliding guide grooves are interchanged.

The linear guide groove is arranged on the overturning base, and the sliding piece is fixed on the back of the supporting plate frame; or the positions of the linear guide groove and the sliding piece are interchanged.

Further, the sliding piece is in a positioning column form, the positioning column is inserted into the sliding guide groove, and corresponding fasteners are arranged below the sliding guide groove and are fixedly connected with the positioning column, so that the positioning column is prevented from being separated from the sliding guide groove.

Further, the back of the turnover base is provided with a sinking groove corresponding to the sliding guide groove, the sliding guide groove is positioned at the bottom of the sinking groove, and the fastening piece is arranged in the sinking groove.

Further, the support plate frame extends to two sides to form a left support arm and a right support arm respectively, the left support arm is provided with a first elastic support member, the right support arm is provided with a second elastic support member, the waist support assembly comprises a left waist support plate frame and a right waist support plate frame, the left waist support plate frame is fixed on the left support arm through the first elastic support member, and the right waist support plate frame is fixed on the right support arm through the second elastic support member.

Further, the left waist supporting plate frame comprises a left annular frame and a left positioning supporting plate extending from the inner side of the left annular frame to the middle part, and the first elastic supporting piece is fixedly connected with the left positioning supporting plate.

The right waist supporting plate frame comprises a right annular frame and a right positioning supporting plate extending from the inner side of the right annular frame to the middle part, and the elastic supporting piece II is fixedly connected with the right positioning supporting plate.

Further, the first elastic supporting piece and the second elastic supporting piece are spring columns, and the left waist supporting plate frame and the right waist supporting plate frame respectively adopt upward-warping arc plates so as to improve mechanical properties.

The beneficial effects achieved by adopting the technical proposal of the utility model are that.

The utility model adopts the structure that the backrest support seat is hinged with the backboard, the lumbar support component is arranged on the backrest support seat, the height of the upper and lower positions can be adjusted, and the inclination angle of the backrest support seat can be easily adjusted by arranging the adjusting rod, so that the utility model is suitable for the use requirements of different users; moreover, the adjusting air bar has good buffering effect, so that the human body can feel more comfortable when lying down.

According to the utility model, the elastic support piece is arranged between the lumbar support component and the backrest support seat, and the elastic support piece can bend towards a plurality of angles under the stress action, so that the lumbar support component can completely fit the waist of a human body by utilizing good elastic reaction force, and good and stable support is provided for the waist of a user, and the lumbar support is comfortable to use.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of the present utility model.

Fig. 3 is a schematic view of a mounting structure of a backrest bracket.

Fig. 4 is a schematic diagram of a distribution structure of the linear guide mechanism.

Fig. 5 is a schematic view of the lumbar support assembly mounting structure.

Reference numerals illustrate: 1. the back plate 2, the backrest support seat 2-1, the turnover base 2-2, the support plate frame 2-21, the left support arm 2-22, the right support arm 3, the back support assembly 4, the waist support assembly 4-1, the left waist support plate frame 4-2, the right waist support plate frame 4-3, the left positioning support plate 4-4, the right positioning support plate 5, the annular frame 6, the adjusting air bar 7, the hinging seat 8, the elastic support piece 9, the clamping positioning mechanism 9-1, the sliding guide groove 9-11, the tooth 9-2, the elastic clamping block 10, the linear guide mechanism 10-1, the linear guide groove 10-2, the sliding piece 11 and the sinking groove.

Detailed Description

In the description of the present utility model, it should be noted that, for the azimuth words such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

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. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such features, and in the description of the utility model, "at least" means one or more, unless clearly specifically defined otherwise.

In the present utility model, unless explicitly stated and limited otherwise, the terms "assembled," "connected," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; can be directly connected or connected through an intermediate medium, and can be communicated with the inside of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "below," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply representing the first feature as having a higher level than the second feature. The first feature being "above," "below," and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or simply indicating that the first feature is level below the second feature.

The following description of the specific embodiments of the present utility model is further provided with reference to the accompanying drawings, so that the technical scheme and the beneficial effects of the present utility model are more clear and definite. The embodiments described below are exemplary by referring to the drawings for the purpose of illustrating the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1-5, the utility model relates to a seat lumbar support which is designed in a linkage way with a backrest assembly 3, and comprises a back plate 1, a backrest support seat 2 and a lumbar support assembly 4, wherein two sides of the back plate are respectively and upwards warped to form side plates, and the end part of the back plate is provided with an annular frame 5 which is used for being connected and fixed with a seat main body. The backrest support seat is arranged in the middle of the backboard, the front end of the backrest support seat is hinged with the backboard, and the rear end of the backrest support seat is connected with an adjusting air bar 6. The hinge seat 7 is connected between the two side plates of the back plate, and the front end of the backrest support seat is provided with a hinge shaft which is rotationally connected with the hinge seat, so that the backrest support seat is rotationally adjusted around the hinge shaft under the telescopic action of the adjusting air rod. The inclination angle of the backrest bracket seat relative to the backboard can be adjusted by changing the telescopic travel of the piston rod of the adjusting air bar.

The back support component and the waist support component are distributed up and down and are respectively arranged on the backrest support seat, and an elastic support piece 8 is connected between the waist support component and the backrest support seat. The elastic support piece adopts a spring column form, and the spring column can swing towards the corresponding direction under the stress. It is noted that the spring post may be replaced by an elastic silicone post to provide a cushioning force for the lumbar support assembly.

The backrest support seat 2 comprises a turnover base 2-1 and a support plate frame 2-2, two ends of the turnover base are respectively hinged with the back plate and the adjusting air rod, and the other end of the adjusting air rod is hinged with the back plate. A clamping positioning mechanism 9 and four groups of linear guide mechanisms 10 are arranged between the supporting plate frame and the overturning base, the four groups of linear guide mechanisms are divided into a front group and a rear group, and each group of four groups of linear guide mechanisms are arranged in parallel to each other, so that the stability of connection is improved. The clamping and positioning mechanism 9 comprises a sliding guide groove 9-1 and an elastic clamping block 9-2 which are matched with each other, a multistage tooth 9-11 is arranged on the side part of the sliding guide groove, and the elastic clamping block is movably clamped and matched with the tooth; the linear guide mechanism 10 includes a linear guide groove 10-1 and a slider 10-2 in sliding contact with the linear guide groove; the elastic clamping block is connected to the back of the supporting plate frame, and the sliding guide groove is arranged on the overturning base; or the positions of the elastic clamping blocks and the sliding guide grooves are exchanged; the linear guide groove is arranged on the overturning base, and the sliding piece is fixed on the back of the supporting plate frame; or the positions of the linear guide groove and the sliding piece are interchanged. The sliding piece is in a positioning column form, the positioning column is inserted into the sliding guide groove, and corresponding fasteners are arranged below the sliding guide groove and are fixedly connected with the positioning column, so that the positioning column is prevented from being separated from the sliding guide groove. Further, the back of the turnover base is provided with a sinking groove 11 corresponding to the sliding guide groove, the sliding guide groove is positioned at the bottom of the sinking groove, and the fastening piece is arranged in the sinking groove and cannot influence the installation of the backboard.

Further, the support plate frame extends to two sides to form a left support arm 2-21 and a right support arm 2-22 respectively, the left support arm is provided with a first elastic support member, the right support arm is provided with a second elastic support member, the waist support assembly comprises a left waist support plate frame 4-1 and a right waist support plate frame 4-2, the left waist support plate frame is fixed on the left support arm through the first elastic support member, and the right waist support plate frame is fixed on the right support arm through the second elastic support member. The left waist supporting plate frame comprises a left annular frame and a left positioning supporting plate 4-3 extending from the inner side to the middle of the left annular frame, and the first elastic supporting piece is fixedly connected with the left positioning supporting plate; the right waist supporting plate frame comprises a right annular frame and a right positioning supporting plate 4-4 extending from the inner side of the right annular frame to the middle part, and the second elastic supporting piece is fixedly connected with the right positioning supporting plate. The left waist support plate frame and the right waist support plate frame respectively adopt upward-warping arc plates, so that the mechanical property is improved.

Compared with the prior art, the utility model has the advantages that the backrest support seat is hinged with the backboard, the lumbar support component is arranged on the backrest support seat, the height of the upper and lower positions can be adjusted, the inclination angle of the backrest support seat can be easily adjusted by arranging the adjusting air bar, the use requirements of different users can be adapted, and the adjusting air bar has good buffering effect; and set up elastic support piece between lumbar support subassembly and back rest support seat, because elastic support piece itself can be forced action to a plurality of angles crooked, utilize good elastic reaction force to make the lumbar support subassembly can laminate human waist completely, provide good stable support for user's waist.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.

Claims

1. The seat lumbar support is characterized by comprising a back plate, a backrest support seat and a lumbar support assembly, wherein one end of the backrest support seat is hinged with the back plate, and the other end of the backrest support seat is connected with an adjusting air rod; the lumbar support assembly is arranged on the backrest support seat, and an elastic support piece is connected between the lumbar support assembly and the backrest support seat.

2. The seat lumbar according to claim 1, wherein the backrest support comprises a turnover base and a support plate frame, two ends of the turnover base are respectively hinged with the back plate and the adjusting air bar, and the other end of the adjusting air bar is hinged with the back plate.

3. The seat lumbar support according to claim 2, wherein a clamping and positioning mechanism and a plurality of groups of linear guide mechanisms are arranged between the supporting plate frame and the overturning base, the clamping and positioning mechanism comprises a sliding guide groove and an elastic clamping block which are matched with each other, a plurality of stages of teeth are arranged on the side part of the sliding guide groove, and the elastic clamping block is movably clamped and matched with the teeth;

the linear guide mechanism comprises a linear guide groove and a sliding piece in sliding contact with the linear guide groove;

the elastic clamping block is connected to the back of the supporting plate frame, and the sliding guide groove is arranged on the overturning base; or the positions of the elastic clamping blocks and the sliding guide grooves are exchanged;

4. A seat lumbar according to claim 3, wherein the slider is in the form of a positioning post which is inserted into the sliding guide slot and is fixedly connected to the positioning post by a corresponding fastener provided below the sliding guide slot to prevent the positioning post from being separated from the sliding guide slot.

5. A seat lumbar according to claim 3, wherein the back of the flip base is provided with a countersink corresponding to the sliding channel, the sliding channel being located at the bottom of the countersink, and the fastener being located in the countersink.

6. The seat lumbar support according to claim 1, wherein the support frames extend to both sides to form a left support arm and a right support arm, the left support arm is provided with a first elastic support member, the right support arm is provided with a second elastic support member, the lumbar support assembly comprises a left lumbar support frame and a right lumbar support frame, the left lumbar support frame is fixed on the left support arm through the first elastic support member, and the right lumbar support frame is fixed on the right support arm through the second elastic support member.

7. The seat lumbar according to claim 6, wherein the left lumbar support frame includes a left annular frame and a left positioning support plate extending from an inner side of the left annular frame toward a middle portion, and the first elastic support member is fixedly connected to the left positioning support plate;

8. The seat lumbar according to claim 6, wherein the first and second elastic support members are spring posts, and the left and right lumbar support brackets each employ upwardly curved plates.