CN214483953U

CN214483953U - Waist rest adjustable seat

Info

Publication number: CN214483953U
Application number: CN202120572895.1U
Authority: CN
Inventors: 唐国华
Original assignee: Anji Nanfang Furniture Co ltd
Current assignee: Anji Nanfang Furniture Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-10-26
Anticipated expiration: 2031-03-19

Abstract

The utility model discloses a waist rest adjustable chair, which comprises a chair back and an elastic waist support piece, wherein the front end surface of the chair back is provided with elastic mesh cloth, the elastic waist support piece comprises a backup plate, the front end surface of the backup plate is abutted against the mesh cloth, the left side and the right side of the rear end surface of the backup plate are respectively provided with an inserting plate, the left side and the right side of the chair back are respectively provided with a socket, the two sockets are respectively provided with an inserting groove extending along the vertical direction, the two inserting plates are respectively inserted into the inserting grooves of the two sockets, the inserting plates are provided with a limiting block, the side wall of one side of the socket is provided with a sliding groove extending along the vertical direction, a plurality of bulges are arranged on the groove wall of one side of the sliding groove at intervals along the vertical direction, a positioning groove which can be clamped into the limiting block is formed between the two adjacent bulges, when the elastic waist support piece slides to the designated height along the vertical direction, the limiting blocks are clamped into the corresponding positioning grooves, and the mesh cloth is matched with the chair back to compress the elastic waist supporting piece. Carry out spacing support to the stopper through the constant head tank, avoid elasticity waist support piece because of gravity gliding.

Description

Waist rest adjustable seat

Technical Field

The utility model relates to a seat field, more specifically the theory relates to a seat with adjustable waist is leaned on.

Background

The chair is a seat with a backrest and armrests, and not only is daily life furniture, but also is common office furniture. In order to improve the comfort of the seat, a convex cushion is generally disposed on the backrest of the chair near the waist of the seat occupant, and the cushion supports the waist of the seat occupant to reduce the fatigue of the waist. However, the position of the lumbar support portion of the seat back of the prior art is generally not adjustable, so that the lumbar support cushion portion does not always fit the waist of the seat occupant correctly when different users sit on the seat, and the prior art has the disadvantages of uncomfortable sitting and poor applicability.

A chair with a lifting lumbar support, which is disclosed in the application number "201721428505.3", proposes that the lumbar support can slide up and down by arranging a sliding groove on a chair back and inserting an insertion block on the lumbar support into the sliding groove. When a user sits on the chair seat, the back acts on the chair back, and the waist rest cannot slide down due to the pressing force of the mesh cloth and the extrusion force of the user.

However, after the chair is used for a long time, and after the user leaves the chair seat, the waist rest can slide down under the action of the gravity of the user, and the height of the waist rest needs to be adjusted again when the user uses the chair every time, which wastes time and labor.

Disclosure of Invention

In order to solve the above technical problem, the present invention provides a waist rest adjustable seat that can adjust the height of a waist supporting member and prevent the waist supporting member from sliding down due to the gravity of the waist rest adjustable seat.

Solve the technical problem, the utility model discloses take following technical scheme:

a waist leans on adjustable seat, includes the back of the chair and elasticity waist support piece, the preceding terminal surface of the back of the chair is provided with has elastic screen cloth, elasticity waist support piece is located the back of the chair with between the screen cloth, elasticity waist support piece includes backup plate and two picture pegs, the preceding terminal surface of backup plate with the screen cloth offsets, two picture pegs divide the left and right sides of backup plate rear end face and extend towards the direction of keeping away from the screen cloth, still be provided with two sockets on the back of the chair, two sockets divide the left and right sides of the back of the chair, and all be provided with the slot that extends along vertical direction on two sockets, two picture pegs insert the slot of two sockets respectively, be provided with the stopper on the picture peg, be provided with the sliding tray that extends along vertical direction on the lateral wall of one side of socket, be provided with a plurality of archs along vertical direction interval on the cell wall of one side of sliding tray, a positioning groove which can be clamped into the limiting block is formed between every two adjacent bulges, and when the elastic lumbar support part slides along the vertical direction, the limiting block slides in the sliding groove; when elasticity waist support piece slided to appointed height, the stopper card is gone into in the constant head tank that corresponds, just the screen cloth cooperation the back of the chair compresses tightly elasticity waist support piece.

In a further scheme, the front end face of the inserting plate is connected with the rear end face of the backup plate, the rear end face of the inserting plate is abutted to the chair back, and the end faces of the left side and the right side of the inserting plate are respectively attached to the inner groove walls on the two sides of the inserting groove.

Because the rear end face of picture peg offsets with the back of the chair, the preceding terminal surface of backup plate has supported the screen cloth, has avoided picture peg and backup plate to take place to rock in the fore-and-aft direction, and because the left and right sides terminal surface of picture peg respectively with the laminating of the both sides inside slot wall of slot, when the user was taken, user's back extrusion backup plate for the backup plate takes place deformation, and on the both sides terminal surface of picture peg acted on the both sides inside slot wall of slot, frictional force between the both sides terminal surface of picture peg and the both sides inside slot wall makes picture peg and backup plate and the back of the chair can keep relatively fixed at the user in-process of taking.

In a further scheme, be provided with the logical groove that extends along the depth direction of slot on the picture peg, it is formed with the springboard to lead to the inslot, the springboard is followed the length direction who leads to the groove extends, the head end of springboard with the picture peg is connected, the tail end of springboard is equipped with the stopper.

When adjusting elasticity waist support piece's height, the picture peg slides in the slot, and the stopper slides in the sliding tray, but because the sliding tray is provided with a plurality of archs along vertical direction, at the in-process that the stopper rises, the arch can force the elastic plate that the stopper links to each other to take place deformation in the width direction of slot and make the stopper withdraw from the sliding tray earlier, adjust to appointed high back until elasticity waist support piece, and the elastic plate kick-backs, and the stopper inserts in the constant head tank that corresponds.

In a further scheme, the depth of the slot is 25-40 cm.

In a further scheme, the tail end of elastic plate is equipped with the portion that contracts of footpath, have the opposite both sides face on the elastic plate, one of them side face is provided with the face of stopper and this face and picture peg is in the coplanar, the opposite side face in the portion that contracts of footpath extends towards stopper position slope along head end to the tail end direction of elastic plate.

Because be provided with on the elastic plate stopper one side face in the neck portion extends towards stopper position slope along the head end to the tail end direction of elastic plate, leaves certain interval between this side face and the cell wall of slot, takes place to deform in the width direction of slot at the elastic plate and makes the stopper withdraw from the sliding tray earlier, the elastic plate can not take place to interfere with the cell wall of slot.

In a further scheme, the protruding one end terminal surface of keeping away from the cell wall of sliding tray even is first arcwall face, when the stopper card is gone into in the constant head tank that corresponds, the outer wall and the adjacent two bellied first arcwall faces of stopper offset, just the outer wall that stopper and adjacent two bellied first arcwall faces offset is the second arcwall face. Because protruding and the face that the stopper both offseted are the arcwall face, when adjusting elastic support piece's height for the stopper is more smooth and easy with the removal deformation of elastic plate.

Advantageous effects

Insert the slot through the picture peg with on the backup plate in and slide along vertical direction for in the use, the user can adjust elasticity waist support piece's place height according to the demand of oneself, and it is more comfortable to take.

Simultaneously, because be provided with the stopper on the picture peg, be provided with the sliding tray on the lateral wall of one side of socket, be provided with a plurality of archs along vertical direction interval on the cell wall of sliding tray, form the constant head tank that can block into the stopper between two adjacent archs, when elasticity waist support piece slides to appointed height, the stopper card is gone into in the constant head tank that corresponds, carry out spacing support to the stopper through the constant head tank that forms between two archs, it needs the height of readjustment elasticity waist support piece to avoid the user to play back elasticity waist support piece because of self action of gravity gliding and lead to the user to take advantage of when sitting once more.

In addition, as the mesh cloth is matched with the chair back to compress the elastic waist supporting piece, the friction force among all the parts of the elastic waist supporting piece offsets partial gravity.

Drawings

FIG. 1 is a schematic view and an enlarged view of a portion of a lumbar support adjustable seat;

FIG. 2 is a front view of a partial structure of the adjustable lumbar support seat;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

figure 4 is a schematic view of the structure of the elastic lumbar support.

The reference numerals in the schematic drawings illustrate:

1-chair back, 2-elastic lumbar support, 3-backup plate, 4-plug board, 5-socket, 6-slot, 7-sliding groove, 8-bulge, 9-positioning groove, 10-limiting block, 11-through groove, 12-elastic plate and 13-diameter reducing part.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, the present embodiment provides a lumbar support adjustable chair, which includes a chair back 1 and an elastic lumbar support 2. The front end face of the chair back 1 is provided with elastic mesh cloth, and the elastic waist support piece 2 is positioned between the chair back 1 and the mesh cloth. In this scheme, elasticity waist support piece 2 includes backup plate 3 and two picture peg 4, and wherein the preceding terminal surface of backup plate 3 offsets with the screen cloth, and two picture pegs 4 then divide the left and right sides of locating backup plate 3 rear end face and extend towards the direction of keeping away from the screen cloth (being close to back of the chair 1 promptly). Simultaneously, still respectively be provided with a socket 5 in the left and right sides on the back of the chair 1, all be provided with the slot 6 that extends along vertical direction on every socket 5, above-mentioned two picture peg 4 insert respectively in the slot 6 of two sockets 5, and still be provided with stopper 10 on one side face of picture peg 4. A sliding groove 7 extending in the vertical direction is further provided on one side wall of the socket 5, and the sliding groove 7 is communicated with the slot 6. As shown in fig. 3, a plurality of protrusions 8 are arranged on a wall of one side of the sliding groove 7 at intervals along the vertical direction, and a positioning groove 9 into which a limiting block 10 can be inserted is formed between two adjacent protrusions 8.

In the use process, the height of the elastic waist supporting part 2 can be adjusted according to the requirement of a user, so that the user can sit more comfortably. When the height of elastic waist support piece 2 needs to be adjusted, only need to lift upwards or press down elastic waist support piece 2, make picture peg 4 among elastic waist support piece 2 slide from top to bottom in slot 6, at picture peg 4 gliding in slot 6 from top to bottom in-process, stopper 10 on picture peg 4 slides from top to bottom along sliding tray 7, and stopper 10 all can offset with subsequent arch 8 when every process is protruding 8, and because the user lifts upwards or presses down elastic waist support piece 2, the ascending drive power in the vertical direction that the user applyed and protruding 8's reverse effort force stopper 10 to drive picture peg 4 and take place certain deformation, thereby make stopper 10 misplace with protruding 8 on the width direction of slot 6, picture peg 4 kick-backs and drives stopper 10 card and go into in the constant head tank 9 between two protruding 8 behind protruding 8. When elasticity waist support piece 2 slided to appointed height, stopper 10 will block in the constant head tank 9 that corresponds, and carry out spacing support to stopper 10 through constant head tank 9 that forms between two archs 8, because the user does not exert external force for elasticity waist support piece 2 this moment, just can avoid the user to rise after elasticity waist support piece 2 because of self action of gravity gliding and lead to the user to sit again the height of elasticity waist support piece 2 need readjust.

In order to make the moving deformation of the stopper 10 and the elastic plate 12 smoother. As shown in fig. 3, in this scheme, the one end terminal surface of the cell wall of protruding 8 far away from sliding tray 7 that links is first arcwall face, and when stopper 10 card was gone into corresponding constant head tank 9, the outer wall of stopper 10 offseted with the first arcwall face of two adjacent protruding 8, and the outer wall that stopper 10 offseted with the first arcwall face of two adjacent protruding 8 is the second arcwall face.

In this embodiment, when the elastic lumbar support member 2 slides to a predetermined height, the mesh can cooperate with the backrest 1 to compress the elastic lumbar support member 2, and the friction between the parts of the mesh can also counteract a portion of the gravity. In order to compress the elastic waist supporting member 2, as a preferred embodiment, in the present embodiment, the front end surface of the inserting plate 4 is connected to the rear end surface of the backup plate 3, the inserting plate 4 penetrates through the slot 6, the rear end surface of the inserting plate 4 abuts against the chair back 1, and the left and right end surfaces of the inserting plate 4 are respectively attached to the two inner slot walls of the slot 6. Because the rear end face of picture peg 4 offsets with the back of the chair 1, the screen cloth has been supported to the preceding terminal surface of backup plate 3, and screen cloth self has certain elasticity, and the elasticity of screen cloth self drives the screen cloth and does to be close to the action to the back of the chair 1 for the screen cloth can cooperate the back of the chair 1 to compress tightly elasticity waist support piece 2. And because the left and right side end surfaces of the inserting plate 4 are respectively attached to the two side inner groove walls of the inserting groove 6, when a user sits, the back of the user extrudes the backup plate 3, so that the backup plate 3 deforms, the two side end surfaces of the inserting plate 4 act on the two side inner groove walls of the inserting groove 6, and the inserting plate 4, the backup plate 3 and the chair back 1 can be kept relatively fixed in the sitting process of the user due to the friction force between the left and right side end surfaces of the inserting plate 4 and the two side inner groove walls of the inserting groove 6, so that the stability of the structure is further improved.

Meanwhile, in the scheme, the depth of the slot 6 is 25-40 cm. Due to the fact that the slot 6 has a certain depth, the socket 5 also plays a certain supporting role for the plug board 4.

In addition, because the left and right side end surfaces of the inserting plate 4 are respectively attached to the inner groove walls on the two sides of the inserting groove 6, in the lifting process of the inserting plate 4, the inserting plate needs to be deformed to a certain extent so as to drive the limiting block 10 and the protrusion 8 to be staggered. In this embodiment, the insertion plate 4 is provided with a through groove 11 extending along the depth direction of the insertion groove 6, and an elastic plate 12 is formed in the through groove 11. The elastic plate 12 extends along the length direction of the through slot 11, the head end of the elastic plate 12 is connected with the inserting plate 4, and the limiting block 10 is arranged at the tail end of the elastic plate 12.

Specifically, referring to fig. 4, a reducing portion 13 is disposed at the tail end of the elastic plate 12, two opposite side plate surfaces are disposed on the elastic plate 12, the limiting block 10 is disposed on one side plate surface, and the plate surface of the board 4 are located on the same plane, and the other side plate surface extends in an inclined manner toward the position of the limiting block 10 along the direction from the head end to the tail end of the elastic plate 12 at the reducing portion 13.

When adjusting elasticity waist support piece 2's height, picture peg 4 slides in slot 6, and stopper 10 slides in sliding tray 7, and at the in-process that stopper 10 rises, arch 8 can force elastic plate 12 that stopper 10 links to each other to take place deformation in slot 6's width direction and make stopper 10 withdraw from sliding tray 7 earlier, adjusts to appointed high back until elasticity waist support piece 2, and elastic plate 12 kick-backs, and stopper 10 inserts in the constant head tank 9 that corresponds. And because the elastic plate 12 is not provided with the limiting block 10, the side plate surface of the side plate extends obliquely towards the position of the limiting block 10 along the direction from the head end to the tail end of the elastic plate 12 in the radial contraction part 13, a certain interval is left between the side plate surface and the groove wall of the slot 6, and when the elastic plate 12 deforms in the width direction of the slot 6 to enable the limiting block 10 to exit the sliding groove 7 first, the elastic plate 12 cannot interfere with the groove wall of the slot 6.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a seat with adjustable waist is leaned on, its characterized in that, includes the back of the chair and elasticity waist support piece, the preceding terminal surface of the back of the chair is provided with has elastic screen cloth, elasticity waist support piece be located the back of the chair with between the screen cloth, elasticity waist support piece includes backup plate and two picture pegs, the preceding terminal surface of backup plate offsets with the screen cloth, two picture pegs divide to locate the left and right sides of backup plate rear end face and extend towards the direction of keeping away from the screen cloth, still be provided with two sockets on the back of the chair, two sockets divide to locate the left and right sides of the back of the chair, just all be provided with the slot that extends along vertical direction on two sockets, two picture pegs insert the slot of two sockets respectively, be provided with the stopper on the picture peg, be provided with the sliding tray that extends along vertical direction on the lateral wall of one side of socket, be provided with a plurality of archs along vertical direction interval on the cell wall of sliding tray, a positioning groove which can be clamped into the limiting block is formed between every two adjacent bulges, and when the elastic lumbar support part slides along the vertical direction, the limiting block slides in the sliding groove; when elasticity waist support piece slided to appointed height, the stopper card is gone into in the constant head tank that corresponds, just the screen cloth cooperation the back of the chair compresses tightly elasticity waist support piece.

2. The adjustable lumbar support seat according to claim 1, wherein the front end surface of the insertion plate is connected with the rear end surface of the backup plate, the rear end surface of the insertion plate abuts against the seat back, and the left and right end surfaces of the insertion plate are respectively attached to the inner groove walls on the two sides of the insertion groove.

3. The adjustable lumbar support seat according to claim 2, wherein the insertion plate is provided with a through groove extending along a depth direction of the insertion groove, an elastic plate is formed in the through groove, the elastic plate extends along a length direction of the through groove, a head end of the elastic plate is connected with the insertion plate, and a tail end of the elastic plate is provided with the limiting block.

4. The adjustable lumbar support seat according to claim 3, wherein the depth of the slot is 25-40 cm.

5. The adjustable lumbar support seat according to claim 3, wherein the end of the elastic plate is provided with a reducing portion, the elastic plate is provided with two opposite side plate surfaces, one side plate surface is provided with the limiting block and is located on the same plane with the plate surface of the inserting plate, and the other side plate surface is inclined and extended towards the position of the limiting block along the direction from the head end to the end of the elastic plate at the reducing portion.

6. The adjustable lumbar support seat according to claim 1, wherein an end surface of the protrusion away from the wall of the sliding groove is a first arc-shaped surface, when the limiting block is clamped into the corresponding positioning groove, an outer wall of the limiting block abuts against the first arc-shaped surfaces of the two adjacent protrusions, and an outer wall of the limiting block abutting against the first arc-shaped surfaces of the two adjacent protrusions is a second arc-shaped surface.