CN210018587U

CN210018587U - Adjustable chair backrest

Info

Publication number: CN210018587U
Application number: CN201920745891.1U
Authority: CN
Inventors: 谭国柱
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-02-07
Anticipated expiration: 2029-05-23

Abstract

The utility model discloses an adjustable chair backrest, which comprises a chair back main body, wherein the inner wall of the chair back main body is provided with a hidden groove, the bottom of the chair back main body is fixedly connected with a connecting plate, fixing frames are symmetrically and fixedly connected in the blind grooves at the bottom ends of the inner walls at the left side and the right side of the chair back main body respectively, the top and the bottom of the fixing frame are respectively provided with a threaded hole, the inner side of the fixing frame is provided with a sliding groove, a backrest cross rod is movably connected in the sliding groove, clamping tables are symmetrically and integrally arranged on the left side and the right side of the backrest cross rod respectively, the clamping table is positioned in the sliding chute, the outsides of the left side and the right side of the backrest cross rod are respectively and symmetrically provided with a pressing sheet through a fixing bolt, the back middle part symmetry fixedly connected with two tight pieces in top of preforming, the mounting hole has been seted up respectively to the top and the bottom of preforming, fixing bolt's one end runs through mounting hole and screw hole fixed connection. The utility model discloses simple structure, convenient operation, the cost of manufacture is low, and the practicality is strong.

Description

Adjustable chair backrest

Technical Field

The utility model relates to a chair technical field specifically is a chair back that relates to can adjust.

Background

The chair is a daily life furniture, a seat with a backrest and armrests, the backrest of the traditional chair is fixed and cannot be adjusted up and down according to personal comfort, and therefore an adjustable chair backrest is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a chair back that can adjust is provided, solved traditional chair back and all be immovable, can not be according to the problem of individual comfort level upper and lower regulation.

In order to solve the technical problem, the utility model provides a following technical scheme: an adjustable chair backrest comprises a chair back main body, a hidden groove is arranged on the inner wall of the chair back main body, the bottom of the chair back main body is fixedly connected with a connecting plate, fixing frames are symmetrically and fixedly connected in the blind grooves at the bottom ends of the inner walls at the left side and the right side of the chair back main body respectively, the top and the bottom of the fixing frame are respectively provided with a threaded hole, the inner side of the fixing frame is provided with a sliding groove, a backrest cross rod is movably connected in the sliding groove, clamping tables are symmetrically and integrally arranged on the left side and the right side of the backrest cross rod respectively, the clamping table is positioned in the sliding chute, the outsides of the left side and the right side of the backrest cross rod are respectively and symmetrically provided with a pressing sheet through a fixing bolt, the back middle part of the pressing sheet is symmetrically and fixedly connected with two jacking blocks, mounting holes are respectively formed in the top and the bottom of the pressing sheet, and one end of the fixing bolt penetrates through the mounting holes and is in threaded connection with the threaded hole.

On the basis of the scheme, the clamping table is in sliding fit with the sliding groove.

On the basis of the scheme, the backrest cross rod is arranged in an arc shape.

On the basis of the scheme, one end of the jacking block, which is far away from the pressing sheet, is propped against the backrest cross rod.

Compared with the prior art, the utility model beneficial effect who has is: the utility model provides a chair back that can adjust, through setting up spout and back horizontal pole, can adjust the back horizontal pole from top to bottom according to individual comfort level in certain extent, the people of being convenient for use, the utility model discloses simple structure, convenient operation, the cost of manufacture is low, and the practicality is strong.

Drawings

Fig. 1 is a schematic structural view of an adjustable chair backrest of the present invention;

FIG. 2 is a side sectional view of an adjustable backrest of the chair of the present invention;

FIG. 3 is a schematic view of a connection structure between a backrest main body and a fixing frame of an adjustable chair of the present invention;

FIG. 4 is a schematic view of an adjustable cross bar of a backrest of a chair of the present invention;

FIG. 5 is a top view of an adjustable cross bar of a backrest of a chair of the present invention;

FIG. 6 is a schematic view of an adjustable backrest pressing sheet of the chair of the present invention;

FIG. 7 is a back view of an adjustable chair back support pad of the present invention;

FIG. 8 is a side view of an adjustable back pad of the chair of the present invention;

fig. 9 is a schematic view of a local structure of the adjustable backrest fixing frame of the chair of the present invention.

The reference numbers in the figures are: 1-chair back main body, 101-hidden groove, 102-connecting plate, 2-fixed frame, 201-threaded hole, 202-sliding groove, 3-backrest cross bar, 301-clamping table, 4-fixed bolt, 5-pressing piece, 501-tightening block and 502-mounting hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so 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 to 9, it can be seen that: an adjustable chair backrest comprises a chair back main body 1, wherein a hidden groove 101 is formed in the inner wall of the chair back main body 1, a connecting plate 102 is fixedly connected to the bottom of the chair back main body 1, the stability of the chair back main body 1 is improved through the arrangement of the connecting plate 102, fixed frames 2 are respectively and symmetrically and fixedly connected into the hidden groove 101 at the bottom end of the inner walls of the left side and the right side of the chair back main body 1, threaded holes 201 are respectively and integrally formed in the top and the bottom of each fixed frame 2, a sliding groove 202 is integrally formed in the inner side of each fixed frame 2, a backrest cross rod 3 is movably connected into the sliding groove 202, clamping tables 301 are respectively and symmetrically and integrally formed in the left side and the right side of the backrest cross rod 3, clamping plates 5 are respectively and symmetrically installed on the outer portions of the left side and the right side of the backrest cross rod 3 through fixing bolts, two jacking blocks 501 are symmetrically and fixedly connected to the middle of the back face of the pressing sheet 5, mounting holes 502 are formed in the top and the bottom of the pressing sheet 5 respectively, and one end of the fixing bolt 4 penetrates through the mounting holes 502 and is in threaded connection with the threaded hole 201.

The clamping table 301 is in sliding fit with the sliding groove 202, so that the backrest cross rod 3 can move conveniently; the backrest cross rod 3 is arranged in an arc shape, so that people can lean conveniently; one end of the jacking block 501, which is far away from the pressing sheet 5, is jacked on the backrest cross rod 3, so that the backrest cross rod 3 can be jacked and fixed, and the backrest cross rod 3 is prevented from sliding.

The utility model discloses a principle and advantage: the utility model provides a chair back that can adjust, when using, can install back horizontal pole 3 in spout 202, installs preforming 5 in the outside of back horizontal pole 3 through fixing bolt 4, fixes back horizontal pole 3, then installs back of the chair main part 1 on the chair, loosens fixing bolt 4 and makes joint platform 301 slide in spout 202, can adjust back horizontal pole 3 from top to bottom according to individual comfort level in certain within range, and the people of being convenient for use, the utility model has the advantages of simple and reasonable structure, convenient operation, the cost of manufacture is low, is fit for using widely.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An adjustable chair back, comprising a chair back main body (1), characterized in that: the chair back comprises a chair back main body (1), a hidden groove (101) is formed in the inner wall of the chair back main body (1), a connecting plate (102) is fixedly connected to the bottom of the chair back main body (1), fixing frames (2) are respectively and symmetrically and fixedly connected to the inside of the hidden groove (101) at the bottom ends of the inner walls of the left side and the right side of the chair back main body (1), threaded holes (201) are respectively and integrally formed in the top and the bottom of each fixing frame (2), a sliding groove (202) is integrally formed in the inner side of each fixing frame (2), a backrest cross rod (3) is movably connected to the inside of each sliding groove (202), clamping tables (301) are respectively and symmetrically and integrally formed in the left side and the right side of each backrest cross rod (3), pressing sheets (5) are respectively and symmetrically installed on the outer portions of the left side and the right side of each backrest cross rod (3) through, mounting holes (502) are respectively formed in the top and the bottom of the pressing sheet (5), and one end of the fixing bolt (4) penetrates through the mounting holes (502) and is in threaded connection with the threaded hole (201).

2. An adjustable chair back rest according to claim 1, wherein the catch (301) is a sliding fit with the runner (202).

3. An adjustable chair back rest according to claim 1, wherein the back rest crossbar (3) is arc-shaped.

4. An adjustable chair back rest as claimed in claim 1, wherein the end of the jacking block (501) remote from the presser plate (5) is jacked against the back rail (3).