CN216166366U - Chair with adjustable chair back - Google Patents

Abstract

The utility model discloses a chair with an adjustable chair back, which relates to the technical field of chairs and comprises chair feet, a supporting frame, a chair seat and a chair back component, wherein the chair seat and the chair back component are arranged on the supporting frame, the heights of the chair seat and the chair back component are adjustable, the chair foot surface is arranged on one side, close to a user, of the chair feet and used for supporting the feet of the user, the supporting frame comprises an outer loop bar and an inner loop bar, the bottom end of the outer loop bar is fixedly connected with the chair feet, the chair back component is arranged at the top end of the inner loop bar, a supporting rod is sleeved on the outer loop bar and used for supporting the chair seat, the supporting rod is in sliding connection with the outer loop bar, and when the user is in a standing posture, the chair seat can retract away from the side of the user and used for avoiding the legs of the user.

Description

Chair with adjustable chair back

Technical Field

The utility model belongs to the technical field of seats, and particularly relates to a seat with an adjustable seat back.

Background

The existing chair is usually composed of simple armrests and a chair back, and can only provide simple seat support, and along with the development of science and technology, the working modes of people are mostly carried out by depending on computers, so that the people sit for a long time to become the normal state of office workers, and a great deal of body health problems can be brought by sitting for a long time.

SUMMERY OF THE UTILITY MODEL

In view of the shortcomings of the prior art, it is an object of the present invention to provide a chair with an adjustable backrest, which solves the above problems of the prior art.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a seat of adjustable back of the chair, includes chair foot and support frame and installs seat support and the back of the chair subassembly on the support frame, the height-adjustable of seat support and back of the chair subassembly, the chair foot is close to user one side and is equipped with the chair foot face and is used for bearing user foot, the support frame includes outer loop bar and interior loop bar, accomodate the air pressure bar in the outer loop bar, air pressure bar bottom and chair foot fixed connection, the movable rod top and the interior loop bar fixed connection of air pressure bar, outer loop bar bottom and chair foot fixed connection, the top of loop bar in the back of the chair subassembly is established, it is used for the bearing seat support to cup joint the bracing piece on the outer loop bar, bracing piece and outer loop bar sliding connection, seat support and bracing piece swing joint, when the user is in the posture of standing, the seat support can keep away from that user one side returns and is used for dodging user's shank.

As a further scheme of the utility model, the chair back assembly comprises a chair back and a chair back fixing seat, a sleeve is arranged on the side, away from a user, of the chair back and is in sliding connection with the chair back fixing seat, a spring is arranged between the chair back and the chair back fixing seat, one end of the spring is fixedly connected with the chair back, the other end of the spring is fixedly connected with an adjusting plate, the adjusting plate is in sliding connection with the chair back fixing seat, a threaded adjusting rod is in threaded connection with the center of the adjusting plate, and the threaded adjusting rod is in rotating connection with the chair back fixing seat.

As a further proposal of the utility model, a rotating mechanism is arranged between the chair back and the fixed seat and is used for controlling the elevation adjustment of the chair back body.

As a further scheme of the utility model, the side, close to the user, of the chair back is arranged into an inner arc shape to support the body of the user.

As a further scheme of the utility model, the outer loop bar is provided with a connecting seat, the connecting seat is movably sleeved outside the outer loop bar, the connecting seat is connected with the outer loop bar in a sliding manner, and the connecting seat is provided with a limiting clamping plate which is matched with a first limiting hole formed in the outer loop bar for limiting and fixing the connecting seat.

As a further scheme of the utility model, the seat is fixedly connected with the supporting rod, one side of the supporting rod, which is far away from a user, is hinged with the connecting seat, one side of the supporting rod, which is close to the connecting seat, is provided with a supporting groove, and when the seat is turned over to be horizontally parallel to the user side, the supporting groove of the supporting rod is attached to the bottom end of the connecting seat to limit the supporting rod.

As a further scheme of the utility model, one side of the support rod, which is far away from a user, is fixedly connected with the connecting seat, a support plate is arranged on the support rod, the bottom end of the support plate is connected with the support rod in a sliding manner, a first movable bolt is arranged on the support rod and is matched with a second limiting hole formed in the side wall of the support rod so as to fix the support plate, the seat is fixedly arranged at the top end of the support plate, and a U-shaped hole is formed in one side of the seat, which is close to the outer sleeve rod.

As a further scheme of the utility model, a connecting rod is arranged between the bottom end of the chair seat and the top end of the supporting plate, a sliding groove is formed in the bottom surface of the chair seat, one end of the connecting rod is contained in the sliding groove and slides along the sliding groove, and the other end of the connecting rod is hinged with the top end of the supporting plate.

As a further scheme of the utility model, the top surface of the supporting plate is provided with a plurality of fixing pins, and the bottom surface of the chair seat is provided with a plurality of positioning holes for accommodating the fixing pins.

As a further scheme of the utility model, at least one pair of rollers is arranged at the bottom end of the chair leg, and a locking mechanism is arranged on each roller.

The utility model has the beneficial effects that: the user stands when official working, the foot tramples the right-hand member at the chair foot face of chair foot, user's buttock leans on the back of the chair, the seat support moves the shank of avoiding the user to the left side, the user tramples the front end of fixed chair foot through the foot and can effectively prevent that the seat from taking place to turn on one's side, the stability of use has been guaranteed, seat support and the back of the chair all can be adjusted from top to bottom, guarantee that it is adapted to different crowds, compare with traditional seat, for providing reliable and stable support when the user stands, not only can alleviate the fatigue that the user stood, and can also alleviate the healthy problem that the seat of a specified duration brought.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the backside structure of the present invention

FIG. 3 is a cross-sectional view of FIG. 1

FIG. 4 is a schematic structural view of the chair back assembly of the present invention;

FIG. 5 is a schematic view showing a first operating state in embodiment 1;

FIG. 6 is a schematic view showing a second operation state in the present embodiment 1;

FIG. 7 is a cross-sectional view of the seat assembly of embodiment 2;

FIG. 8 is a schematic view showing a first operating state in embodiment 2;

FIG. 9 is a schematic view showing a first operating state in embodiment 2;

FIG. 10 is a schematic view showing a third operating state in embodiment 1;

in the figure: the chair comprises chair legs-1, an outer sleeve rod-2, a first limiting hole-201, a chair seat-3, a sliding groove-31, a U-shaped hole-301, a waist-shaped hole-311, a chair back-4, a first sleeve-41, a chair back fixing seat-42, a spring-43, a second movable bolt-44, an adjusting plate-45, a threaded adjusting rod-46, a supporting rod-5, a connecting seat-51, a second limiting hole-501, a limiting protrusion-502, a limiting clamping plate-52, an inner sleeve rod-6, a pneumatic rod-7, a supporting plate-9, a fixing pin-91, a first movable bolt-10, a connecting rod-11, a hip-100, an office table-200 and a roller-101.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 3, the embodiment of the present invention includes a chair leg 1, a supporting frame, a chair seat 3 and a chair back assembly mounted on the supporting frame, the heights of the chair seat 3 and the chair back component can be adjusted, the chair feet 1 are provided with chair feet surfaces for supporting the feet of a user at one side close to the user, the support frame comprises an outer sleeve rod 2 and an inner sleeve rod 6, an air pressure rod 7 is accommodated in the outer sleeve rod 2, the bottom end of the air pressure rod 7 is fixedly connected with the chair leg 1, the top end of the movable rod of the air pressure rod 7 is fixedly connected with the inner loop bar 6, the bottom end of the outer loop bar 2 is fixedly connected with the chair leg 1, the chair back component is arranged at the top end of the inner loop bar 6, the outer loop bar 2 is sleeved with a support bar 5 for supporting the chair seat 3, the support bar 5 is connected with the outer loop bar 2 in a sliding way, the chair seat 3 is movably connected with the support bar 5, when the user is in a standing position, the seat 3 can be retracted away from the user side to avoid the user's legs.

As shown in fig. 5, the chair is used when the user sits and stands for office work, as shown in fig. 6, when the user stands for office work, the feet step on the right ends of the chair feet surfaces of the chair feet 1, the buttocks 100 of the user leans against the chair back 4, the chair seat 3 moves towards the left side to avoid the legs of the user, so that the hands of the user are comfortably kept above the office table 200, the user can effectively prevent the chair from turning over by stepping on the front ends of the fixed chair feet 1 through the feet, the stability in the using process is ensured, the chair seat 3 and the chair back 4 can be adjusted up and down to ensure that the chair is suitable for different people, compared with the traditional chair, the chair can provide stable and reliable support when the user stands, not only can relieve the fatigue degree of standing of the user, but also can relieve the health problem caused by long-time sitting, as shown in fig. 10, the chair back 4 can be heightened to support the waist of the user,

specifically, the chair back assembly comprises a chair back 4 and a chair back fixing seat 42, a first sleeve 41 and the chair back fixing seat 42 are arranged on the side, away from the user, of the chair back 4 and are in sliding connection, a spring 43 is arranged between the chair back 4 and the chair back fixing seat 42, one end of the spring 43 is fixedly connected with the chair back 4, the other end of the spring 43 is fixedly connected with an adjusting plate 45, the adjusting plate 45 is in sliding connection with the chair back fixing seat 42, a threaded adjusting rod 46 is in threaded connection with the center of the adjusting plate 45, the threaded adjusting rod 46 is in rotating connection with the chair back fixing seat 42, elastic expansion and contraction are kept between the chair back 4 and an inner sleeve rod 6, when the user keeps a sitting posture, flexible support is always brought to the waist or the back of the user, meanwhile, the elastic force of the chair back 4 can be further adjusted by adjusting the distance between the adjusting plate 45 and the chair back 4 by rotating the threaded adjusting rod 46, as shown in fig. 5, a second movable bolt 44 is also arranged on the chair back fixing seat 42, the sleeve on the back side of the chair back 4 is provided with a corresponding limiting hole which is matched with the second movable bolt 44 to adjust the position of the chair back 4 and carry out limiting and fixing.

Preferably, the side of the chair back 4 close to the user is designed into an inner arc shape to support the body of the user, so that the body of the user is effectively supported, and the leaning stability and comfort of the body are ensured. As shown in fig. 5 and 6, to effectively support the waist and the hip of the user, respectively.

In another embodiment, a rotation mechanism is disposed between the backrest 4 and the fixing seat 42 to control the adjustment of the elevation angle of the backrest body, so as to meet the use requirements of different users, as shown in fig. 4, a rotation shaft is disposed between the backrest 4 and the first sleeve 41, so that the rotation adjustment between the backrest 4 and the first sleeve 41 can be achieved.

Specifically, as shown in fig. 2 and 3, seat support (3) and bracing piece (5) fixed connection, bracing piece (5) keep away from user one side and articulate with connecting seat (51), bracing piece (5) are close to connecting seat (51) one side and are equipped with the support groove, when seat support (3) are close to user side upset to the level parallel, the support groove of bracing piece (5) is laminated with connecting seat (51) bottom and is used for spacing bracing piece (5), thereby guarantee 03 have good support stability, the seat support can be along turning over in the vertical plane, when the user keeps the position of sitting, clockwise turning over seat support 3 to the level parallel state, as shown in fig. 5, when the user stands, counter-clockwise turning over seat support 3 on outer loop bar 2, as shown in fig. 6, the user's buttock leans on back of the chair 4, thereby user's shank avoids.

Specifically, as shown in fig. 2 and 3, the outer loop bar 2 is provided with a connecting seat 51, the connecting seat 51 is movably sleeved outside the outer loop bar 2, the connecting seat 51 is slidably connected with the outer loop bar 2, the connecting seat 51 is provided with a limiting clamping plate 52, the limiting clamping plate 52 is matched with a first limiting hole 201 formed in the outer loop bar 2 to limit the connecting seat 51, the connecting seat 51 can be fixed in a limiting manner by turning over the connecting seat 51 and inserting the connecting seat into the first limiting hole 201, the height of the seat 3 can be conveniently adjusted, and the structure is stable and reliable.

Example 2

On the basis of the embodiment 1, the connection mode between the seat 3 and the support rod 5 is adjusted, so that the chair 03 can move horizontally and can also turn over in the vertical plane, as shown in fig. 7, one side of the support rod (5) far away from the user is fixedly connected with the connecting seat (51), a supporting plate 9 is arranged on the supporting rod 5, the bottom end of the supporting plate 9 is connected with the supporting rod 5 in a sliding way, a first movable bolt 10 is arranged on the supporting rod 5 and is matched with a second limiting hole 501 arranged on the side wall of the supporting rod 5 for fixing the supporting plate 9, the chair seat 3 is fixedly arranged at the top end of the supporting plate 9, a U-shaped hole 301 is arranged on one side of the chair seat 3 close to the outer loop bar 2, the U-shaped hole 301 can accommodate the outer loop bar 2, as shown in fig. 8, when the user stands, the semen supporting plate 9 moves to the left side, so that the outer loop bar 2 is clamped in the seat 3 to provide an avoiding space for the legs of the user, and the interference of the seat 3 to the legs of the user is avoided. The first movable bolt 10 that sets up on the bracing piece 5 cooperates the spacing hole 501 of second to fix the backup pad 9, and seat support 3's stability when guaranteeing the position of sitting, bracing piece 5 are close to the user side and are equipped with spacing arch 502 for preventing that backup pad 9 from deviating from that slides.

Specifically, as shown in fig. 7, be equipped with connecting rod 11 between seat support 3 bottom and the backup pad 9 top, spout 31 has been seted up to seat support 3 bottom surface, connecting rod 11 one end is accomodate and is slided along spout 31 in spout 31, the other end is articulated with backup pad 9 top, waist shape hole 3 connecting rod 11 has been seted up in the both sides wall of spout 31, connecting rod 11's top both sides are equipped with round bar and the cooperation of waist shape hole 3 connecting rod 11 notch along waist shape hole 3 connecting rod 11 and slide, as shown in fig. 9, when the user keeps standing, upwards mention anticlockwise upset with seat support 3, thereby avoid disturbing user's shank, can guarantee that user's shank has sufficient active region.

Further, be equipped with a plurality of fixed pins 91 at the 9 top surfaces of backup pad, a plurality of locating holes that hold fixed pin 91 are seted up to 3 bottom surfaces of seat support, when closing through seat support 3 and backup pad 9, avoid seat support 3 and backup pad 9 to take place the conversation again and slide, the stability of seat support 3 when guaranteeing the position of sitting.

Preferably, at least one pair of rollers 101 is disposed at the bottom end of the chair leg 1, and a locking mechanism is disposed on the rollers 101 to facilitate the movement of the chair body.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", etc., indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the method is simple. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the spirit and scope of the utility model, and any equivalents thereto, such as those skilled in the art, are intended to be embraced therein.

Claims (10)

1. The utility model provides a seat of adjustable back of chair, includes chair foot (1) and support frame and installs seat support (3) and the back of the chair subassembly on the support frame, a serial communication port, the height-adjustable of seat support (3) and back of the chair subassembly, chair foot (1) are close to user one side and are equipped with the chair foot face and are used for bearing user's foot, the support frame includes outer loop bar (2) and interior loop bar (6), pneumatic rod (7) have been accomodate in outer loop bar (2), pneumatic rod (7) bottom and chair foot (1) fixed connection, the movable rod top and the interior loop bar (6) fixed connection of pneumatic rod (7), outer loop bar (2) bottom and chair foot (1) fixed connection, the back of the chair subassembly is established on the top of interior loop bar (6), outer loop bar (2) have been cup jointed bracing piece (5) and have been used for bearing seat support (3), bracing piece (5) and outer loop bar (2) sliding connection, the seat (3) is movably connected with the supporting rod (5), and when a user is in a standing posture, the seat (3) can retract away from one side of the user to avoid legs of the user.

2. The chair with the adjustable chair back as claimed in claim 1, wherein the chair back assembly comprises a chair back (4) and a chair back fixing seat (42), the chair back (4) is far away from a user side and is provided with a sleeve and the chair back fixing seat (42) in a sliding connection manner, a spring (43) is arranged between the chair back (4) and the chair back fixing seat (42), one end of the spring (43) is fixedly connected with the chair back (4), the other end of the spring is fixedly connected with an adjusting plate (45), the adjusting plate (45) is in a sliding connection with the chair back fixing seat (42), a threaded adjusting rod (46) is in threaded connection with the center of the adjusting plate (45), and the threaded adjusting rod (46) is rotatably connected with the chair back fixing seat (42).

3. The chair with the adjustable backrest as claimed in claim 2, wherein a rotation mechanism is provided between the backrest (4) and the fixed seat (42) for controlling the adjustment of the elevation angle of the backrest body.

4. The chair with adjustable back as claimed in claim 1, wherein the back (4) is shaped to form an inner arc near the user's side for supporting the user's torso.

5. The chair with the adjustable chair back according to any one of claims 1 to 4, wherein the outer sleeved rod (2) is provided with a connecting seat (51), the connecting seat (51) is movably sleeved on the outer side of the outer sleeved rod (2), the connecting seat (51) is slidably connected with the outer sleeved rod (2), and the connecting seat (51) is provided with a limiting snap-gauge (52) for matching with a first limiting hole (201) formed on the outer sleeved rod (2) to limit and fix the connecting seat (51).

6. The chair with the adjustable chair back as claimed in claim 5, wherein the chair seat (3) is fixedly connected with the supporting rod (5), the side of the supporting rod (5) away from the user is hinged with the connecting seat (51), a bracket is arranged on the side of the supporting rod (5) close to the connecting seat (51), and when the chair seat (3) is turned to be horizontally parallel close to the user side, the bracket of the supporting rod (5) is attached to the bottom end of the connecting seat (51) to limit the supporting rod (5).

7. The chair with the adjustable chair back as claimed in claim 5, wherein the side of the supporting rod (5) away from the user is fixedly connected with the connecting seat (51), the supporting rod (5) is provided with a supporting plate (9), the bottom end of the supporting plate (9) is slidably connected with the supporting rod (5), the supporting rod (5) is provided with a first movable bolt (10) for fixing the supporting plate (9) in cooperation with a second limiting hole (501) formed in the side wall of the supporting rod (5), the chair seat (3) is fixedly installed at the top end of the supporting plate (9), and one side of the chair seat (3) close to the outer sleeve rod (2) is provided with a U-shaped hole (301).

8. The chair with the adjustable chair back as claimed in claim 7, wherein a connecting rod (11) is arranged between the bottom end of the chair seat (3) and the top end of the supporting plate (9), a sliding groove (31) is formed in the bottom surface of the chair seat (3), one end of the connecting rod (11) is accommodated in the sliding groove (31) and slides along the sliding groove (31), and the other end of the connecting rod is hinged to the top end of the supporting plate (9).

9. The chair of claim 8, wherein the supporting plate (9) has a plurality of fixing pins (91) on the top surface thereof, and the seat (3) has a plurality of positioning holes on the bottom surface thereof for receiving the fixing pins (91).

10. The chair with the adjustable chair back as claimed in claim 1, wherein the bottom end of the chair leg (1) is provided with at least one pair of rollers (101), and the rollers (101) are provided with a locking mechanism.

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