CN213909346U

CN213909346U - Seat back with adjustable radian and seat

Info

Publication number: CN213909346U
Application number: CN202022354035.9U
Authority: CN
Inventors: 陈俊
Original assignee: Danyang Comton Future Smart Furniture Co ltd
Current assignee: Danyang Comton Future Smart Furniture Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-08-10
Anticipated expiration: 2030-10-21

Abstract

The utility model discloses a seat back and seat with adjustable radian, seat back include support, telescoping device, back body, and the telescoping device both ends are connected respectively in the both ends of back body, and the telescoping device is connected in the support, and the telescoping device includes loop bar, slidable connection in the telescopic link of loop bar, and the loop bar is equipped with the flexible locking device who is used for adjusting and locking the telescoping device length. The utility model discloses the accessible is adjusted telescoping device's length and is realized the regulation of back body radian to make the back body more be suitable for the user, promoted the comfort level of using, make same money seat back satisfy different physique users' user demand simultaneously. When the backrest body needs to be adjusted, only the button needs to be pressed, when the backrest body is adjusted to a preset position, the length of the telescopic device can be locked only by loosening the button, and therefore the backrest body can be locked at a fixed position, and operation is simpler.

Description

Seat back with adjustable radian and seat

Technical Field

The utility model relates to a backrest and seat with adjustable radian belongs to seat technical field.

Background

The comfort of the seat back has an important influence on the use experience of the whole seat, and for some students, the back is not only comfortable, but also influences the development of the physique of the child to a certain extent. The backrest in the prior art can realize the adjustment of the height of the plate surface, namely the adjustment of the support position of the backrest, but cannot realize the adjustment of the radian, so that the fitting degree of the backrest and the back of a user is not high, or the backrest with the same specification cannot meet the use requirements of users with various physiques, therefore, the backrest with the adjustable radian is required in practical application.

SUMMERY OF THE UTILITY MODEL

For solving the deficiencies of the prior art, an object of the utility model is to provide a backrest and seat with adjustable radian has solved the technical problem that back of the chair radian is not adjustable among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme:

a seat backrest with adjustable radian comprises a bracket, a telescopic device and a backrest body, wherein two ends of the telescopic device are respectively connected with two ends of the backrest body, the telescopic device is connected with the bracket,

the telescopic device comprises a loop bar and a telescopic rod which is slidably connected in the loop bar, and the loop bar is provided with a telescopic locking device which is used for adjusting and locking the length of the telescopic device.

As the utility model discloses a preferred scheme, seat back with adjustable aforementioned radian, flexible locking device is including connecting in the button of loop bar, set up in the slide of telescopic link, the lateral part of slide is equipped with the recess, the button is equipped with the dead round pin of consecutive lock one, the dead round pin two of lock, the width of the dead round pin one of lock is less than the slide, the width of the dead round pin two of lock is less than the width of recess, and is greater than the width of slide, when the telescoping device is in length adjustable state, the dead round pin of lock is connected in the slide, when the telescoping device is in the lock state, two connected recesses of the dead round pin of lock.

As the utility model discloses a preferred scheme, seat back with adjustable aforementioned an radian, the button is still connected and is used for the dead round pin of drive lock to the gliding resilient means of recess, and two are equipped with the dog that is used for avoiding two and the recess separations of the dead round pin of lock.

As an optimized scheme of the utility model, aforementioned seat back with adjustable radian, resilient means are the spring, and the loop bar of button is connected the face and is equipped with the reference column, spring coupling reference column.

As a preferred embodiment of the present invention, in the seat back with adjustable radian, the lateral portion of the loop bar is provided with a button connecting portion extending outward, and the button is slidably connected to the inside of the button connecting portion.

As a preferred scheme of the utility model, seat back with adjustable aforementioned a radian, telescopic link are connected in the upper end of back body, and the loop bar articulates in the bottom of back body.

As an optimized scheme of the utility model, aforementioned seat back with adjustable radian, the bottom of back body is equipped with articulated seat, and the loop bar lower extreme passes through the hinge bar and articulates in articulated seat.

As an optimized scheme of the utility model, the seat back with adjustable aforementioned radian, articulated seat pass through the hinge bar preforming and connect in the hinge bar, and the hinge bar preforming passes through screw connection in articulated seat.

A seat comprises a seat body and a seat back with any one of the radian adjustable parts.

As an optimized scheme of the utility model, the preceding seat, the support passes through the sliding sleeve and connects in the seat body, and the sliding sleeve can be for the vertical slip of seat body.

The utility model discloses the beneficial effect who reaches:

compared with the prior art, the utility model discloses the accessible is adjusted telescoping device's length and is realized the regulation of back body radian to make the back body more be suitable for the user, promoted the comfort level of using, make same money seat back satisfy different physique users' user demand simultaneously. When the backrest body needs to be adjusted, only the button needs to be pressed, when the backrest body is adjusted to a preset position, the length of the telescopic device can be locked only by loosening the button, and therefore the backrest body can be locked at a fixed position, and operation is simpler.

When the backrest body is installed on the seat body, the height of the whole seat backrest can be adjusted through the sliding sleeve, and the use comfort is further improved.

Drawings

FIG. 1 is an overall view of the backrest of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a cross-sectional view of the button and telescoping device of the present invention;

FIG. 4 is an isometric view of the button of the present invention;

fig. 5 is a first schematic connection diagram (unlocked state) of the first dead lock pin, the second dead lock pin and the telescopic device of the present invention;

fig. 6 is a schematic view showing the connection between the first dead lock pin, the second dead lock pin and the telescopic device (in a dead lock state);

the meaning of the reference symbols in the figures: 1-a telescopic rod; 2-rod sleeve; 3-a backrest body; 4-a scaffold; 5-a button; 6-hinged lever; 7-a spring; 8-a stop block; 11-a slide; 12-a groove; 21-a button connection; 31-a hinged seat; 41-a sliding sleeve; 51-locking pin one; 52-locking pin two; 53-a locating post; 61-hinged lever tablet.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 6: this embodiment discloses a backrest with adjustable radian, including support 4, telescoping device, back body 3, the telescoping device both ends are connected respectively in the both ends of back body 3, and the telescoping device is connected in support 4, and back body 3 adopts elasticity or flexible material, can carry out bending of certain radian, can adopt plastics, the better metal of wantonly also can for example.

The telescopic device comprises a loop bar 2 and a telescopic rod 1 which is slidably connected in the loop bar 2, wherein the loop bar 2 is provided with a telescopic locking device which is used for adjusting the whole length of the telescopic device and locking the telescopic locking device in the length state.

The telescopic locking device comprises a button 5 connected to the loop bar 2 and a slide 11 arranged on the telescopic rod 1, a groove 12 is formed in the side portion of the slide 11, the button 5 is provided with a first locking pin 51 and a second locking pin 52 which are sequentially connected, the width of the first locking pin 51 is smaller than that of the slide 11, the width of the second locking pin 52 is smaller than that of the groove 12 and larger than that of the slide 11, when the telescopic device is in a length-adjustable state (namely, a figure 5 and an unlocked state), the first locking pin 51 is connected to the slide 11, and when the telescopic device is in a locked state (figure 6), the second locking pin 52 is connected with the groove 12.

With reference to fig. 3 to 6: the button 5 is also connected with an elastic device for driving the second dead lock pin 52 to slide towards the groove 12, and the second dead lock pin 52 is provided with a stop 8 for preventing the second dead lock pin 52 from separating from the groove 12. The resilient means serves to keep the telescopic device in a locked state in a normal state, while the stop 8 serves as a limit for preventing the button 5 from disengaging from the telescopic device.

Preferably, the elastic device of the present embodiment is a spring 7, the rod connecting surface of the button 5 is provided with a positioning column 53, and the spring 7 is sleeved on the outer surface of the positioning column 53.

The side of the stem 2 is provided with a button coupling part 21 extending outward, and the button 5 is slidably coupled to the inside of the button coupling part 21. The button connecting portion 21 corresponds to a button sliding groove and serves to restrict the sliding of the button 5.

In the telescopic device, the telescopic rod 1 is connected to the upper end of the backrest body 3, and the loop bar 2 is hinged to the bottom end of the backrest body 3, and the specific hinge structure is shown in fig. 2: the bottom of the backrest body 3 is provided with a hinged seat 31, and the lower end of the loop bar 2 is hinged to the hinged seat 31 through a hinged rod 6. The hinge base 31 is connected to the hinge lever 6 by a hinge lever pressing piece 61, and the hinge lever pressing piece 61 is connected to the hinge base 31 by a screw.

The embodiment also discloses a seat, which comprises the seat back with the adjustable radian. Wherein, the support 4 is connected to the seat body through the sliding sleeve 41, the sliding sleeve 41 can slide vertically relative to the seat body, in practical application, an upright post (as in the patent with application number 2019205017562 in the prior art) is usually arranged behind the seat body, and the sliding sleeve 41 can slide up and down on the upright post to realize the height adjustment of the whole seat back.

During the use, under normal conditions, spring 7 drive button 5, makes two 52 of dead lock round pins be in the inside of recess 12 (fig. 6), because the width of two 52 of dead lock round pins is less than recess 12, and is greater than the width of slide 11, consequently can avoid two 52 of dead lock round pins to slide along slide 11, just so realize the locking of telescopic link 1 with rod cover 2 length, when the length of telescoping device is unchangeable, the radian of back body 3 also does not change yet. When the length of the telescopic device needs to be adjusted, the press button 5 is pressed, the second locking pin 52 is separated from the groove 12, the first locking pin 51 is located inside the slideway 11, the telescopic device can be unlocked, the telescopic rod 1 is operated to slide in the rod sleeve 2, when the telescopic device is adjusted to the preset length, the press button 5 is loosened, and the second locking pin 52 is connected with the groove 12 at the corresponding position under the action of the spring 7 to be locked. In the process of adjusting the radian of the backrest body 3, the bottom end of the backrest body 3 is provided with the hinged seat 31, so that the change of the radian of the backrest body 3 can be compensated.

Compared with the prior art, the length that this embodiment accessible was adjusted telescoping device realizes the regulation of 3 radians of back body to make back body 3 more be suitable for the user, promoted the comfort level of using, make same money seat back satisfy different physique users 'user's user demand simultaneously. When the backrest body 3 needs to be adjusted, the button 5 only needs to be pressed, when the backrest body 3 is adjusted to a preset position, the locking of the length of the telescopic device can be realized only by loosening the button 5, so that the backrest body 3 can be locked at a fixed position, and the operation is simpler.

When the backrest body 3 is installed on the seat body, the height of the whole seat backrest can be adjusted through the sliding sleeve 41, and the use comfort is further improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. A seat backrest with adjustable radian is characterized by comprising a support (4), a telescopic device and a backrest body (3), wherein two ends of the telescopic device are respectively connected with two ends of the backrest body (3), the telescopic device is connected with the support (4),

the telescopic device comprises a loop bar (2) and a telescopic rod (1) which is slidably connected in the loop bar (2), wherein the loop bar (2) is provided with a telescopic locking device which is used for adjusting and locking the length of the telescopic device.

2. The seat back with the adjustable radian is characterized in that the telescopic locking device comprises a button (5) connected to the loop bar (2) and a slide way (11) arranged on the telescopic rod (1), a groove (12) is formed in the side portion of the slide way (11), the button (5) is provided with a first locking pin (51) and a second locking pin (52) which are sequentially connected, the width of the first locking pin (51) is smaller than that of the slide way (11), the width of the second locking pin (52) is smaller than that of the groove (12) and larger than that of the slide way (11), the first locking pin (51) is connected to the slide way (11) when the telescopic device is in a length adjustable state, and the second locking pin (52) is connected to the groove (12) when the telescopic device is in a locking state.

3. An arc adjustable seat back according to claim 2, characterized in that the button (5) is further connected with an elastic device for driving the second dead lock pin (52) to slide towards the groove (12), and the second dead lock pin (52) is provided with a stop (8) for preventing the second dead lock pin (52) from separating from the groove (12).

4. An adjustable seat back according to claim 3, wherein the resilient means is a spring (7), the loop bar connecting surface of the button (5) is provided with a positioning post (53), and the spring (7) is connected with the positioning post (53).

5. An adjustable arc seat back according to claim 2, wherein the side of the loop bar (2) is provided with an outwardly extending button connection (21), and the button (5) is slidably connected to the inside of the button connection (21).

6. The seat back with adjustable radian according to claim 1, wherein the telescopic rod (1) is connected to the upper end of the back body (3), and the loop bar (2) is hinged to the bottom end of the back body (3).

7. The seat back with adjustable radian according to claim 6, wherein the bottom end of the back body (3) is provided with a hinge seat (31), and the lower end of the loop bar (2) is hinged to the hinge seat (31) through a hinge rod (6).

8. The adjustable seat back according to claim 7, wherein the hinge seat (31) is connected to the hinge rod (6) by a hinge rod pressing plate (61), and the hinge rod pressing plate (61) is connected to the hinge seat (31) by a screw.

9. A seat comprising a seat body and an adjustable arc seat back as claimed in any one of claims 1 to 8.

10. Seat according to claim 9, characterized in that said bracket (4) is connected to the seat body by means of a sliding sleeve (41), said sliding sleeve (41) being vertically slidable with respect to the seat body.