CN216854220U

CN216854220U - Back of chair goes up and down to return well structure and swivel chair

Info

Publication number: CN216854220U
Application number: CN202220148533.4U
Authority: CN
Inventors: 彭汉强
Original assignee: Anji Han Qiang Furniture Co ltd
Current assignee: Anji Han Qiang Furniture Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-07-01
Anticipated expiration: 2032-01-19

Abstract

The utility model provides a chair back lifting and centering structure which comprises a fixed frame and a lifting chair back, wherein a sliding block is fixedly arranged on the fixed frame, a vertical sliding groove is formed in the lifting chair back, the sliding block is embedded in the vertical sliding groove in a clamping mode to form sliding connection, a height positioning strip is fixedly arranged on the fixed frame, a plurality of clamping notches are uniformly formed in the height positioning strip along the vertical direction, a swinging needle is arranged on the outer side of the height positioning strip, the upper end of the swinging needle is hinged to the lifting chair back through a rotating shaft, a clamping pin penetrates through the lower end of the swinging needle, the clamping pin is embedded in any clamping notch of the height positioning strip to form clamping and fixing, and a centering spring is arranged between the clamping pin and the lifting chair back in a pulling mode. The swing needle drives the clamping pin to enter and exit the clamping notch, the clamping pin is ensured to be fixed through the elasticity of the centering spring, the whole structure is simple, the realization is easy, the manufacturing cost is low, the effect is reliable, the lifting operation is light and smooth, the experience of a user is obviously improved, and the swing needle has good market prospect.

Description

Back of chair goes up and down to return well structure and swivel chair

Technical Field

The utility model belongs to the technical field of furniture, and relates to a chair structure, in particular to a chair back lifting and centering structure and a swivel chair.

Background

The chair is a daily-life furniture, a seat with a backrest and armrests. Modern chairs pursue beauty and fashion, and some chairs are not used as seats alone, so that the life of people is more convenient under the combination of science and technology.

To meet the modern requirements, chairs having various functions are being designed. Among them, the lifting chair is especially common to adapt to the seats of people with different heights. The existing lifting chair has the lifting function of the height of a chair seat and the lifting function of the height of a chair back, and aims to meet the requirements of comfort levels with different heights.

The height of the chair back needs to be provided with a centering structure so as to ensure that the chair back can realize stable positioning after lifting. The existing centering structure is generally of two types, one type adopts springs on two sides to perform elastic balance pressing centering, the structure needs to ensure that the elastic forces of the two springs are consistent all the time, but after long-time use, the spring on one side is easy to fatigue and relax, and then the balance state of the elastic forces on the two sides is broken, so that centering failure is caused. The other type is that the pendulum needle returns with the steel wire cooperation, but steel wire length is unchangeable can't carry out elastic expansion, leads to the experience of going up and down to feel relatively poor, and the lifting operation is comparatively hard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art and provides a chair back lifting centering structure and a swivel chair, which adopt the cooperation of a swinging needle and a spring, can optimize lifting operation and maintain a reliable centering effect.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a structure in back of chair goes up and down back of the chair, includes the mount and goes up and down the back of the chair, set firmly the slider on the mount, set up vertical spout on the lift back of the chair, slider card embedding form the connection of sliding in the vertical spout, set firmly high location strip on the mount, high location strip evenly sets up a plurality of screens breachs along vertical, the outside of high location strip sets up the balance staff, the upper end of balance staff articulate in on the lift back of the chair through the pivot, the clamping pin is worn to the lower extreme of balance staff, the embedding of clamping pin arbitrary screens breach of high location strip forms the joint fixed, the clamping pin with pull between the lift back of the chair and establish back the well spring.

In the chair back lifting centering structure, the back side of the lifting chair back is concavely provided with an assembly groove, an assembly column is convexly arranged in the assembly groove, the top end of the centering spring is sleeved on the clamping pin, and the bottom end of the centering spring is sleeved on the assembly column.

In the chair back lifting centering structure, a hinge hole and a sliding guide strip are further arranged in the assembly groove, the rotating shaft penetrates into the hinge hole to form fixed connection, the sliding guide strip is a curved arc strip body, and the side face of the swinging needle is abutted against the sliding guide strip to form support sliding connection.

In the chair back lifting centering structure, the clamping notches are arranged on the same side edge of the height positioning strip.

In the chair back lifting centering structure, an upper hook body is arranged between the adjacent clamping notches, and the top hook tip of the upper hook body is higher than the bottom edge of the corresponding clamping notch; the outer side profile edge of the upper hook body is in transition connection with the top edge of the lower clamping position notch through an arc.

In the above-mentioned chair back lifting and centering structure, the opening of the position-locking notch is at the side part, and the position-locking notch is an arc inner notch.

In the chair back lifting centering structure, the swinging pin is a sheet-shaped rod body, and the swinging pin and the height positioning strip are arranged in parallel.

In the chair back lifting centering structure, the number of the sliding blocks is two, the number of the vertical sliding grooves is two, and the sliding blocks and the sliding grooves are symmetrically distributed on two sides of the height positioning strip.

In the chair back lifting centering structure, a first mounting plate and a second mounting plate are further arranged between the fixing frame and the lifting chair back, the height positioning strip is fixed on the first mounting plate, and the sliding block is fixedly arranged on the second mounting plate.

The utility model also provides a swivel chair which is provided with the chair back lifting centering structure.

Compared with the prior art, the chair back lifting and centering structure has the following beneficial effects:

the swing needle drives the clamping pin to enter and exit the clamping notch, the clamping pin is ensured to be fixed through the elasticity of the centering spring, the whole structure is simple, the realization is easy, the manufacturing cost is low, the effect is reliable, the lifting operation is light and smooth, the experience of a user is obviously improved, and the swing needle has good market prospect.

Drawings

Fig. 1 is a first internal structural diagram of the chair back lifting and centering structure.

Fig. 2 is a second schematic view of the inner structure of the chair back up-down centering structure.

Fig. 3 is a third schematic view of the internal structure of the chair back neutral lifting structure.

Fig. 4 is an external view of the chair back neutral up and down configuration.

In the figure, 1, a fixed frame; 2. a height positioning bar; 3. needle swinging; 4. a rotating shaft; 5. a position clamping pin; 6. a centering spring; 7. a first mounting plate; 8. a second mounting plate; 9. a slider; 10. lifting the chair back; 11. assembling the column; 12. and a slide guiding strip.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 to 4, this back of the chair goes up and down back of the chair structure, including mount 1 and the back of the chair 10 that goes up and down, slider 9 sets firmly on the mount 1, set up vertical spout on the back of the chair 10 that goes up and down, slider 9 inlay card forms the connection of sliding in vertical spout, set firmly height location strip 2 on the mount 1, height location strip 2 evenly sets up a plurality of screens breachs along vertical, height location strip 2's the outside sets up balance staff 3, balance staff 3's upper end articulates on the back of the chair 10 that goes up and down through pivot 4, balance staff 3's lower extreme is worn to set up clamping pin 5, arbitrary screens breach that clamping pin 5 embedding height location strip 2 forms the joint fixed, draw between clamping pin 5 and the back of the chair 10 and set up back neutral spring 6.

The back side of the lifting chair back 10 is concavely provided with an assembly groove, an assembly column 11 is convexly arranged in the assembly groove, the assembly column 11 is specifically arranged in the lower region of the assembly groove, the top end of the centering spring 6 is sleeved on the clamping pin 5, and the bottom end of the centering spring 6 is sleeved on the assembly column 11.

A plurality of clamping gaps are arranged on the same side edge of the height positioning strip 2.

An upper hook body is arranged between the adjacent clamping gaps, and the top end hook tip of the upper hook body is higher than the bottom edge of the corresponding clamping gap, so that the clamping pin 5 is prevented from easily separating from the clamping gap; the outside profile limit of going up the hook body links up through the arc transition with the topside edge of below screens breach, does benefit to the smooth and easy business turn over screens breach of screens round pin 5 from this.

The opening of screens breach is at the lateral part, and the screens breach is the recess in the circular arc, does benefit to the gomphosis from this and is cylindric screens round pin 5.

The swing needle 3 is a sheet rod body, and the swing needle 3 is arranged in parallel with the height positioning strip 2.

The quantity of slider 9 is two, and the quantity of vertical spout is two, and two sliders 9, spouts are the symmetric distribution in the both sides of height location strip 2. The symmetrical form of the guide sliding structure is beneficial to ensuring the stability of lifting sliding and avoiding the problems of lifting deviation and shaking.

The function mode of the chair back lifting and centering structure is as follows:

1. chair back rising

The lifting chair back 10 is lifted upwards, so that the clamping pin 5 is moved out from the side opening of the clamping gap, the swinging needle 3 swings around the rotating shaft 4, the vertical sliding groove of the lifting chair back 10 moves upwards relative to the sliding block 9, the lifting chair back stops when the required height is reached, and the clamping pin 5 at the lower end of the swinging needle 3 is pulled into the corresponding clamping gap through the elastic tension of the centering spring 6 to form clamping positioning.

2. Chair back lowering

The lifting chair back 10 is lifted upwards, so that the clamping pin 5 is moved out from the side opening of the clamping gap, the swing needle 3 swings around the rotating shaft 4, the lifting chair back 10 is moved downwards after the clamping pin 5 is separated from clamping, the vertical sliding groove of the lifting chair back 10 moves downwards relative to the sliding block 9, the lifting chair back 10 stops when the required height is reached, and the clamping pin 5 at the lower end of the swing needle 3 is pulled into the corresponding clamping gap through the elastic tension of the centering spring 6 to form clamping positioning.

according to the utility model, the swing needle 3 drives the clamping pin 5 to enter and exit the clamping gap, the clamping pin 5 is ensured to be fixed by the elasticity of the centering spring 6, the whole structure is simple, the realization is easy, the manufacturing cost is low, the effect is reliable, the lifting operation is light and smooth, the experience of a user is obviously improved, and the market prospect is good.

Example two

This embodiment is substantially the same as the first embodiment, except that:

as shown in figure 2, a hinge hole and a guide sliding strip 12 are further arranged in the assembly groove, the rotating shaft 4 penetrates into the hinge hole to form fixed connection, the guide sliding strip 12 is a curved arc strip body, and the side surface of the oscillating needle 3 abuts against the guide sliding strip 12 to form support sliding connection.

EXAMPLE III

This embodiment is substantially the same as the first embodiment, except that:

as shown in fig. 1 to 3, a first mounting plate 7 and a second mounting plate 8 are further arranged between the fixed frame 1 and the lifting chair back 10, the height positioning bar 2 is fixed on the first mounting plate 7, and the slider 9 is fixedly arranged on the second mounting plate 8.

Example four

The present embodiment provides a swivel chair having a chair back centering structure according to the first embodiment, the second embodiment, or the third embodiment.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the holder 1 is used more herein; a height positioning bar 2; a swing needle 3; a rotating shaft 4; a position clamping pin 5; a centering spring 6; a first mounting plate 7; a second mounting plate 8; a slide block 9; a lifting chair back 10; the mounting posts 11; runner 12, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to the spirit of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a structure in back of the chair goes up and down to return, includes the mount and goes up and down the back of the chair, its characterized in that, the slider sets firmly on the mount, set up vertical spout on the lift back of the chair, slider card embedding form the connection of sliding in the vertical spout, set firmly the high location strip on the mount, the high location strip evenly sets up a plurality of screens breachs along vertical, the outside of high location strip sets up the pendulum needle, the upper end of pendulum needle articulate through the pivot in on the lift back of the chair, the screens round pin is worn to the lower extreme of pendulum needle, the embedding of screens round pin arbitrary screens breach of high location strip forms the joint fixed, the screens round pin with pull between the lift back of the chair and establish back the well spring.

2. The chair back lifting and centering structure as claimed in claim 1, wherein a mounting groove is concavely formed on the back side of the lifting chair back, a mounting post is convexly formed in the mounting groove, the top end of the centering spring is sleeved on the locking pin, and the bottom end of the centering spring is sleeved on the mounting post.

3. The chair back lifting and centering structure of claim 2, wherein a hinge hole and a slide guide bar are further disposed in the assembly groove, the rotating shaft penetrates into the hinge hole to form a fixed connection, the slide guide bar is a curved bar body, and a side surface of the swinging needle abuts against the slide guide bar to form a support sliding connection.

4. The chair back tilt-back mechanism of claim 1, wherein said detent notches are formed on the same side of said height-positioning bar.

5. The chair back lifting and centering structure of claim 1, wherein an upper hook is disposed between adjacent ones of said detent notches, and a top hook tip of said upper hook is higher than a bottom edge of the corresponding detent notch; the outer side profile edge of the upper hook body is in transition connection with the top edge of the lower clamping position notch through an arc.

6. The chair back tilt-back mechanism of claim 1, wherein the opening of the detent notch is at the side, and the detent notch is an arc inner notch.

7. The chair back lift centering structure of claim 1, wherein said swinger is a plate-like rod, said swinger being disposed parallel to said height positioning bar.

8. The chair back lifting centering structure of claim 1, wherein the number of said sliding blocks is two, the number of said vertical sliding grooves is two, and said two sliding blocks and said sliding grooves are symmetrically distributed on both sides of said height positioning bar.

9. The chair back lifting centering structure as claimed in claim 1, wherein a first mounting plate and a second mounting plate are further disposed between the fixing bracket and the lifting chair back, the height positioning bar is fixed on the first mounting plate, and the slider is fixed on the second mounting plate.

10. A swivel chair having a chair back tilt-and-return configuration as claimed in any one of claims 1 to 9.