CN215959093U

CN215959093U - Backrest with automatically regulated back angle

Info

Publication number: CN215959093U
Application number: CN202122002613.7U
Authority: CN
Inventors: 肖增荣
Original assignee: Foshan Shunde Longjiang Bopai Furniture Co ltd
Current assignee: Foshan Shunde Longjiang Bopai Furniture Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-03-08
Anticipated expiration: 2031-08-24

Abstract

The utility model provides a backrest capable of automatically adjusting a waist and back angle, which belongs to the technical field of articles for daily use and comprises a backrest and a seat cushion, wherein two sides of the backrest are respectively connected with a left armrest lifting core and a swing arm, a right armrest lifting core and a swing arm, which are structurally symmetrical, a first jack and a second jack are arranged on the side of the backrest, the first jack is positioned above the second jack, an inserting column and an inserting plate are arranged on each armrest, the inserting column is inserted into the first jack, the inserting plate is inserted into the second jack, a groove position is arranged in the inserting plate, a compression spring is arranged in the groove position, and the compression spring is fixed in the groove position through a back spring fixing self-tapping screw. The backrest capable of automatically adjusting the waist and back angles has the advantages that a person leans against the backrest, the backrest can be adjusted in a backward tilting mode at a certain angle, the change of the spine can be better and automatically captured, the lumbar support is more exquisite in fitting, the back is lighter and more comfortable by liberating the lumbar, and people can work healthily.

Description

Backrest with automatically regulated back angle

Technical Field

The utility model relates to the technical field of articles for daily use, in particular to a backrest with a function of automatically adjusting the angle of a waist and a back.

Background

The chair is one of daily household articles, and the chair is provided with the back usually, and the back has the effect of supporting to human waist and back, but the angle of back is all fixed at present, can not adjust according to the actual demand of people's back facing upward, and the comfort level is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the defects in the prior art, and provides the backrest with the function of automatically adjusting the angle of the waist and the back, so that a person leans against the backrest and can adjust the backrest in a certain angle, the change of the spine can be better and automatically captured, the waist support is more delicate in fit, the lumbar is liberated, the back is lighter and more comfortable, and people can work healthily.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

a backrest with an automatic waist angle adjustment function comprises a backrest and a seat cushion, wherein two sides of the backrest are respectively connected with a left armrest lifting core and a swing arm which are symmetrical in structure, a right armrest lifting core and a swing arm, the lower ends of the left handrail lifting core and the swing arm and the right handrail lifting core and the swing arm are connected on the seat cushion, a first jack and a second jack are arranged on the side of the backrest, the first jack is positioned above the second jack, the left handrail lifting core and the swing arm as well as the right handrail lifting core and the swing arm are respectively provided with an inserting column and an inserting plate, the inserting column is inserted and installed into the first inserting hole, the inserting plate is inserted and installed into the second inserting hole, the plug board is provided with a groove position, a compression spring is arranged in the groove position, and the compression spring is fixed in the groove position through a back spring fixing self-tapping screw.

Furthermore, the backrest is provided with an assembly hole, and the insertion column is connected with a backrest and armrest connecting screw.

Furthermore, the joints of the left handrail lifting core and the swing arm and the right handrail lifting core and the swing arm are provided with assembling positions which are mutually matched, and after the left handrail lifting core and the swing arm are mutually combined with the right handrail lifting core and the swing arm, left and right handrail connecting screws are driven into the assembling positions, so that the left handrail lifting core and the swing arm, and the right handrail lifting core and the swing arm can be fixed into a whole.

Furthermore, PU handrail panels are arranged on the left handrail lifting core and the swing arm, and the right handrail lifting core and the swing arm.

Further, the seat cushion is formed in a smooth concave shape from both sides toward the middle.

Furthermore, a V-shaped neck supporting position which is concave backwards and gathered together is formed at the top of the backrest.

Furthermore, an armrest outer sleeve is arranged on the PU armrest panel.

Compared with the prior art, the utility model has the beneficial effects that:

when a person leans against the backrest, the compression spring can be compressed to a certain degree, so that the backrest can be adjusted in a backward tilting mode at a certain angle, the change of the spine can be captured better and automatically, the lumbar support is attached more finely, the back of the person is lighter and more comfortable by liberating the lumbar, and the person can work healthily.

Drawings

FIG. 1 is a schematic view of a backrest;

FIG. 2 is a rear view of the backrest;

FIG. 3 is a schematic view of section B-B of FIG. 2;

FIG. 4 is an enlarged view of circle A of FIG. 3;

FIG. 5 is an exploded view of the backrest;

fig. 6 is a schematic view showing a state in which the backrest is gradually reclined.

In the figure: 1-backrest, 1.1-first jack, 1.2-second jack, 1.3-assembly hole, 1.4-V-shaped neck support position, 2-seat cushion, 3-left armrest lifting core and swing arm, 4-right armrest lifting core and swing arm, 5-insertion column, 6-insertion plate, 6.1-groove position, 7-compression spring, 8-back spring fixing self-tapping screw, 9-backrest and armrest connecting screw, 10-assembly position, 11-left and right armrest connecting screw, 12-PU armrest panel, 13-armrest housing and 14-seat cushion connecting screw.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

As shown in figures 1 to 6, a backrest with an automatic waist angle adjustment function comprises a backrest 1 and a seat cushion 2, wherein two sides of the backrest 1 are respectively connected with a left armrest lifting core and swing arm 3 and a right armrest lifting core and swing arm 4 which are structurally symmetrical, the lower ends of the left armrest lifting core and swing arm 3 and the right armrest lifting core and swing arm 4 are connected and fixed on the seat cushion 2 through seat cushion connecting screws 14, as can be seen from figure 5, the connecting parts of the left armrest lifting core and swing arm 3 and the right armrest lifting core and swing arm 4 are provided with assembling positions 10 which are mutually matched, when the left armrest lifting core and swing arm 3 and the right armrest lifting core and swing arm 4 are mutually combined, the left armrest lifting core and swing arm 3 and the right armrest lifting core and swing arm 4 can be fixed into a whole, the left armrest lifting core and swing arm 3 and the right armrest lifting core and swing arm 4 are provided with PU armrest panels 12, the PU handrail panel 12 can make the hand bearing comfortable, the handrail outer cover 13 is arranged on the PU handrail panel 12, and the handrail outer cover 13 can be made of rubber materials, so that the hand can be comfortably touched.

A first jack 1.1 and a second jack 1.2 are arranged on the side of the backrest 1, the first jack 1.1 is positioned above the second jack 1.2, the left armrest lifting core and swing arm 3 and the right armrest lifting core and swing arm 4 are respectively provided with an inserting column 5 and an inserting plate 6, the inserting column 5 is inserted into the first jack 1.1 and fixed, the inserting plate 6 is inserted into the second jack 1.2 and fixed, a groove 6.1 is arranged in the inserting plate 6, a compression spring 7 is arranged in the groove 6.1, the compression spring 7 is fixed in the groove 6.1 through a back spring fixing self-tapping screw 8, an assembling hole 1.3 is arranged on the backrest 1, and screws are screwed into the assembling hole 1.3 to connect and fix the inner and outer components of the backrest 1 together; the bolt hole position is arranged in the inserting column 5, when the inserting column 5 is inserted into the first inserting hole 1.1, the backrest and the armrest connecting screw 9 are screwed into the screw hole 5.1, and then the left armrest lifting core and the swing arm 3 or the right armrest lifting core and the swing arm 4 can be connected and fixed on the backrest 1.

The purpose of this design is, combine fig. 6 to see, when not sitting the people, back 1 is in the a state, sit 2 heeling back at the seatpad when leaning on back 1, compression spring 7 can take place the compression, thereby make back 1 can take place the heeling of certain angle, become the b state, then lean on backward as the people, make back 1 and seatpad 2 whole rotatory tilt motion to the c state of taking place, adjust through such secondary heeling back, can better automatic change of catching the vertebra, the lumbar support laminating is more exquisite, liberation lumbar vertebrae makes the back lighter and comfortable, the below of seatpad 2 is provided with support frame or support column, seatpad 2 is articulated to be installed on support frame or support column, make seatpad 2 can take place the rotation of certain angle.

The seatpad 2 forms the level and smooth sunken form toward the centre from both sides, makes the people sit and goes steadily comfortable, and the top of back 1 is formed with V-arrangement support neck position 1.4 that the sunken gathering backward gathers together, and when back 1 was in the state of bending backward, people's neck can be bent backward and hang and hold in the palm neck position 1.4 at the V-arrangement and carry out the bearing in order to obtain relaxing, and the structure is ingenious.

Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. A backrest with an automatic waist angle adjustment function is characterized by comprising a backrest and a seat cushion, the two sides of the backrest are respectively connected with a left handrail lifting core and a swing arm which are symmetrical in structure, a right handrail lifting core and a swing arm, the lower ends of the left handrail lifting core and the swing arm and the right handrail lifting core and the swing arm are connected on the seat cushion, a first jack and a second jack are arranged on the side of the backrest, the first jack is positioned above the second jack, the left handrail lifting core and the swing arm as well as the right handrail lifting core and the swing arm are respectively provided with an inserting column and an inserting plate, the inserting column is inserted and installed into the first inserting hole, the inserting plate is inserted and installed into the second inserting hole, the plug board is provided with a groove position, a compression spring is arranged in the groove position, and the compression spring is fixed in the groove position through a back spring fixing self-tapping screw.

2. The backrest with the function of automatically adjusting the angle of the waist and back as claimed in claim 1, wherein the backrest is provided with a mounting hole, and the post is connected with a backrest and armrest connecting screw.

3. The backrest with the function of automatically adjusting the waist and back angle as claimed in claim 1, wherein the joints of the left armrest lifting core and swing arm and the right armrest lifting core and swing arm are provided with fitting positions, and when the left armrest lifting core and swing arm and the right armrest lifting core and swing arm are combined with each other, the left armrest lifting core and swing arm and the right armrest lifting core and swing arm can be fixed together by driving the left armrest connecting screw into the fitting positions.

4. The backrest with the function of automatically adjusting the angle of the waist and back as claimed in claim 3, wherein the left armrest lifting core and swing arm and the right armrest lifting core and swing arm are provided with PU armrest panels.

5. A backrest having a self-adjusting lumbar support angle as set forth in claim 1, wherein said seat cushion is formed in a smooth concave shape from both sides toward the center.

6. The backrest with the function of automatically adjusting the angle of the waist and the back as claimed in claim 1, wherein the top of the backrest is formed with a V-shaped neck supporting position which is concave backwards and gathered together.

7. The backrest with the function of automatically adjusting the angle of the waist and the back as claimed in claim 4, wherein the PU armrest panels are provided with armrest outer covers.