CN209915472U

CN209915472U - Rocking device for chair back and chair

Info

Publication number: CN209915472U
Application number: CN201920404687.3U
Authority: CN
Inventors: 王大秋; 周骏
Original assignee: Zhejiang Shengtuo Furniture Technology Co Ltd
Current assignee: Zhejiang Shengtuo Furniture Technology Co Ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-01-10
Anticipated expiration: 2029-03-28

Abstract

The utility model relates to a swing device and seat for the back of the chair, swing device includes: the base is used for realizing integral support; the swinging piece is positioned at the upper part of the base, the middle part of the swinging piece is rotationally connected with the base, and the left side and the right side of the swinging piece are respectively provided with a gap with the base; the elastic body is arranged between the base and the swinging piece; the chair comprises a chair back, a seat part, a chassis and a swinging device, wherein a connecting part is fixedly arranged at the rear part or the lower part of the seat part, the base is fixedly connected with the connecting part, and the swinging part is fixedly connected with the chair back. Compared with the prior art, the utility model discloses a swing action that the swing piece can make the left bank or the right bank under the exogenic action, the flexibility is high, and the swing piece has certain cushioning effect when left and right rocking, and security and travelling comfort are high, and the reset of swing piece when not having the exogenic action down, keep balance, and then realize the back of the chair and make corresponding left bank or the right bank swing along with human back posture, accord with ergonomic, the function of inclining forward and backward on the combination chassis, the back of the chair flexibility is higher.

Description

Rocking device for chair back and chair

Technical Field

The utility model belongs to the technical field of furniture equipment, especially, relate to a rocking device and seat that are used for the back of the chair that accord with ergonomic.

Background

The office chair is an indispensable product in office furniture, and is popular with consumers due to good practicability. However, the adjustment function of the chair back on the market is mostly limited to forward tilting or backward tilting, however, in the actual use process, the activity state of the back of the human body is not limited to forward tilting or backward tilting, and the left tilting or right tilting actions such as side-to-side talking, side-to-side fetching, etc. are also very frequent when the user sits; therefore, the existing seat cannot be correspondingly adjusted according to the left-leaning or right-leaning posture of the user, cannot meet the requirement of diversified sitting postures of the user, and is poor in self-adaption, flexibility and comfort.

In order to overcome the deficiencies in the prior art, the utility model provides a can make corresponding left side inclination or right side inclination swing, flexibility height, travelling comfort are good, accord with ergonomic a device and a seat for swaying of the back of the chair along with human back posture.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, the present invention provides a rocking device and a chair for a chair back, which can swing along with the posture of the back of the human body in a left or right leaning manner, have high flexibility, good comfort and meet the human engineering.

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

a rocking device for a chair back, comprising:

the base is used for realizing integral support;

the swinging piece is positioned at the upper part of the base, the middle part of the swinging piece is rotationally connected with the base, and gaps are respectively reserved between the left side and the right side of the swinging piece and the base, so that the swinging piece does left-right swinging motion around a rotating point when stressed;

the elastic body is arranged between the base and the swinging piece and used for realizing swinging of the swinging piece and resetting after swinging.

The utility model discloses well swing piece and base rotate to be connected, simultaneously, set up between the two and with the elastomer that offsets between the two, realized that swing piece can make the swing action of correspondingly heeling left or heeling right under the exogenic action, the flexibility is high, and make swing piece have certain cushioning effect when swaing from side to side, security and travelling comfort are high, the while is convenient for swing piece when not having exogenic action to reset, keep balance, realize the self-adaptation function of follow-up rocking, accord with ergonomic; the swinging piece is connected with the chair back, and the base is connected with the seat part or the chassis, so that the chair back can correspondingly swing leftwards or rightwards along with the posture of the back of the human body.

Preferably, the base comprises a first connecting plate, and the periphery of the first connecting plate is provided with a first connecting lug a and a first connecting lug b which extend upwards and are arranged in a front-back opposite mode; the swinging piece comprises a second connecting plate, and a second connecting lug a and a second connecting lug b which extend downwards and are arranged in a front-back opposite mode are arranged on the periphery of the second connecting plate; the first connecting lug a and the second connecting lug a are rotatably connected through a rotating shaft, and the first connecting lug b and the second connecting lug b are rotatably connected through a rotating shaft.

The swinging piece is used for realizing the rotating connection between the base and the swinging piece, and the swinging piece does left-right swinging motion relative to the base.

Preferably, the left and right sides of the rotation point are distributed with elastic bodies.

Because the elasticity of pivot point left and right sides elastomer and the uniformity of elasticity have realized that the swing piece can make the swing action of correspondingly heeling or heeling under the exogenic action, the flexibility is high to have certain cushioning effect when making the swing piece sway about, security and travelling comfort are high, the elastomer of being convenient for simultaneously resets when not having the exogenic action, keep balance, and then make the back of the chair effectively reset, realize the function that the follow-up sways, accord with ergonomic.

Preferably, the elastic body is any one of a compression spring and an elastic rubber.

Preferably, the middle part of the swinging piece is rotationally connected with the base through a rotating shaft, and the swinging piece is fixedly connected with the rotating shaft; the elastic body is a torsion spring, the axis of the torsion spring is sleeved on the rotating shaft and is kept relatively fixed with the rotating shaft in the circumferential direction, and the two torsion arms of the torsion spring are simultaneously abutted to the swinging piece or the base.

Under the action of the torsion spring, the swinging piece swings left and right and resets.

Preferably, the swinging member swings at an angle of 5 ° to 15 ° to the left and at an angle of 5 ° to 15 ° to the right.

Provides proper swing amplitude, has good comfort and high safety.

Preferably, the periphery of the first connecting plate is provided with a first limiting part a and a first limiting part b which extend upwards and are arranged in a left-right opposite direction, the periphery of the second connecting plate is provided with a second limiting part a and a second limiting part b which are arranged in a left-right opposite direction, when the second limiting part a swings and contacts with the first limiting part a, the first limiting part a stops the second limiting part a to continue swinging, and when the second limiting part b swings and contacts with the first limiting part b, the first limiting part b stops the second limiting part b to continue swinging.

The swing device is used for limiting the swing amplitude of the swing piece, limiting is achieved, and safety and comfort are guaranteed.

Preferably, a bolt shaft is arranged among the first connecting lug a, the first connecting lug b, the second connecting lug a and the second connecting lug b in a penetrating mode to achieve rotary connection of the swinging piece and the base.

The rotary connection mode is realized through a bolt shaft, and the structure is simple and firm.

A chair comprises a chair back and a seat part, and comprises the swing device for the chair back, wherein a connecting part is fixedly arranged at the rear part or the lower part of the seat part, a base is fixedly connected with the connecting part, and a swing part is fixedly connected with the chair back. When the chair back is subjected to lateral force, the swinging device is driven to swing towards the direction of the lateral force; the lateral force is: a force in a direction toward the left, lower left, right, or lower right of the seat back.

Because the swinging piece swings left and right relative to the base, the chair back swings left and right relative to the chassis and the seat part; specifically, in the use process, when a user sits on the seat and has a sitting posture of leaning left or right, the chair back can swing left and right in a fitting manner along with the leaning left or right of the back of the human body, so that the function of the chair back swinging along with the movement and the healthy and comfortable office sitting posture are achieved; particularly, when the chair back swings left and right, the swinging piece swings left and right by taking the pin shaft as a rotating center, meanwhile, the first limit part a and the first limit part b can stop the excessive swinging of the swinging piece to limit the swinging angle of the swinging piece, and because of the elasticity of the pressure springs at the left side and the right side of the pin shaft and the consistency of the elasticity, the chair back can make swinging motion of correspondingly inclining left or inclining right under the action of the back of a human body, the flexibility is high, the chair back has certain buffering function when swinging left and right, the safety and the comfort are high, meanwhile, the pressure springs can be conveniently reset under the action of no external force, the balance is kept, and further the chair back can be effectively reset, and simultaneously, the prior chassis has the function of inclining front and back, therefore, the utility model provides the chair with the functions of adjusting forward, backward, leftward inclining and rightward, and realizes the function of follow-up swinging, the comfort is better, and the human engineering is better met; of course, the chair can also be directly arranged below the seat part, and the left-right tilting function of the chair back can be realized.

Preferably, a bottom plate is fixedly arranged at the bottom of the seat part, the bottom plate comprises a rocker serving as the connecting part, and the base is fixedly connected to the rocker.

At present, the chassis on the market basically comprises a seesaw and has the function of tilting forwards and backwards, so that the base is fixedly connected to the seesaw, the chair back has the functions of adjusting forwards, backwards, leftwards and rightwards, the function of follow-up swinging in more directions is realized, the comfort is better, and the chassis better accords with the human engineering; a supporting rod and a supporting chair leg are sequentially arranged below the chassis.

Preferably, the connecting part is a support plate, and the base is fixedly connected to the support plate.

The base is directly and fixedly connected to the supporting plate, and the left-right leaning function of the chair back can be realized.

Preferably, the lower portion of the seat back is provided with an accommodating cavity for accommodating the swing device and the connecting portion.

Firstly, will sway device and connecting portion and hold the intracavity completely, played hidden function, externally seem, can't see and sway device and connecting portion, succinctly pleasing to the eye, secondly, can carry out certain parcel with swaing device and connecting portion for the connection of swaing device and connecting portion is more stable, and difficult production is not hard up, and the back of the chair left and right sides sways more stably.

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

the utility model provides a can make corresponding heeling or the swing of heeling, flexibility height, travelling comfort are good, accord with ergonomic back of the chair follow-up and sway structure and seat along with human back posture. Particularly, the utility model discloses well swinging member and base rotate to be connected, simultaneously, set up between the two and with the elastomer that offsets between the two, and then realized that swinging member can make the swing action of correspondingly heeling left or heeling right under the exogenic action, the flexibility is high, and make swinging member have certain cushioning effect when swaing from side to side, security and travelling comfort are high, the while is convenient for swinging member to reset when not having the exogenic action again, keep balance, realize the self-adaptation function of following up the swing, accord with ergonomic; when the chair is used, when a user sits on the chair and has a sitting posture of leaning left or right, the chair back can swing left and right in a fitting manner along with the leaning left or right of the back of the human body, so that the function of swinging the chair back in a following manner and a healthy and comfortable office sitting posture are achieved, and the chair back can swing front and back in a fitting manner along with the leaning forward or backward of the back of the human body under the action of the chassis, so that the chair is more in line with the human engineering.

Drawings

FIG. 1 is a schematic structural view of a chair back follow-up rocking structure according to embodiment 1;

FIG. 2 is a schematic partial cross-sectional view of a chair back follow-up rocker structure according to embodiment 1;

FIG. 3 is an exploded view of the chair back follow-up rocker structure of embodiment 1;

FIG. 4 is a schematic top view of the swinging member of the embodiment 1;

FIG. 5 is a schematic top view of a susceptor according to embodiment 1;

FIG. 6 is a schematic view showing an internal structure of a rocking member of the chair back follow-up rocking structure of example 1, in which the rocking member is in three states of a leftward inclination a1, a return intermediate position b1 and a rightward inclination c1 under an external force;

FIG. 7 is a schematic view of an internal structure of a seat back follow-up rocker structure with a torsion spring according to embodiment 2;

FIG. 8 is an exploded view of the seat back follow-up rocker structure and the seat back in accordance with example 1;

FIG. 9 is an enlarged view of portion A of FIG. 8;

FIG. 10 is a schematic view of the structure of the chair back follow-up rocking structure, the chair back and the chassis in embodiment 1;

FIG. 11 is an enlarged view of the portion B of FIG. 10;

FIG. 12 is a schematic view showing a seat and a seatback follow-up rocking structure and a partial interior structure thereof according to embodiment 1;

FIG. 13 is an enlarged view of the portion C of FIG. 12;

FIG. 14 is a schematic structural view showing three states of the seat back and the swinging member of the chair back in the embodiment 1, namely a left-leaning state a1, a returning intermediate position b1 and a right-leaning state c1 under the action of external force;

FIG. 15 is an enlarged view of the portion D of FIG. 14;

FIG. 16 is a schematic structural view of example 3.

Detailed Description

The following describes in detail an embodiment of the present invention with reference to the drawings.

The present embodiment relates to reference orientations of components, such as front, rear, left, right, up, down, etc., described at an angle of a user when the user is seated in the seat.

Example 1:

a chair back follow-up rocking structure, as shown in fig. 1-6, comprising:

a base 100 for integral support;

the swinging piece 200 is positioned at the upper part of the base 100, the middle part of the swinging piece 200 is rotatably connected with the base 100, and gaps are respectively reserved between the left side and the right side of the swinging piece 200 and the base 100, so that the swinging piece 200 does left-right swinging motion around a rotating point when being stressed;

and an elastic body disposed between the base 100 and the swing member 200 for swinging the swing member 200 and restoring the swing member after swinging. The swinging member 200 swings to the left and right at an angle of 8 °.

Specifically, the base 100 includes a first connecting plate 110, a first connecting lug a120 and a first connecting lug b130 extending upward and disposed in front and rear opposite directions are disposed on a periphery of the first connecting plate 110, the swinging member 200 includes a second connecting plate 210, and a second connecting lug a220 and a second connecting lug b230 extending downward and disposed in front and rear opposite directions are disposed on a periphery of the second connecting plate 210; the first connecting lug a120 and the first connecting lug b130 which are oppositely arranged are bent by extending the periphery of the first connecting plate 110 upwards, the second connecting lug a220 and the second connecting lug b230 which are oppositely arranged are bent by extending the periphery of the second connecting plate 210 downwards, a bolt shaft 400 is commonly penetrated between the first connecting lug a120, the first connecting lug b130, the second connecting lug a220 and the second connecting lug b230 to realize the rotary connection between the base and the swinging piece, specifically, a first bolt hole 160 is respectively arranged on the first connecting lug a120 and the first connecting lug b130, a second bolt hole 260 is respectively arranged on the second connecting lug a220 and the second connecting lug b230, two first bolt holes 160 are symmetrically arranged, two second bolt holes 260 are symmetrically arranged, and anti-falling caps 410 for preventing the bolt shafts from sliding off are arranged at two ends of the first bolt shaft 400.

More specifically, the left side and the right side of the latch shaft 400 are respectively provided with an elastic body, the elastic forces on the two sides of the elastic body are the same, the elastic body is specifically a pressure spring 310, in order to ensure the stability of the pressure spring 310 during movement, anti-slip parts are arranged on the first connecting plate 110 and the second connecting plate 210, the upper end and the lower end of the pressure spring 310 are relatively fixed on the anti-slip parts, the anti-slip parts can be anti-slip columns, the anti-slip columns are inserted into the pressure spring 310, and also can be anti-slip holes, and the upper end and the lower end of the pressure spring 310 are inserted into the anti-slip holes to.

Meanwhile, the periphery of the first connecting plate 110 is provided with a first limiting portion a140 and a first limiting portion b150 which extend upwards and are arranged in a left-right opposite direction, the periphery of the second connecting plate 210 is provided with a second limiting portion a240 and a second limiting portion b250 which are arranged in a left-right opposite direction, when the second limiting portion a240 swings and contacts with the first limiting portion a140, the first limiting portion a140 stops the second limiting portion a240 to continue swinging to limit the swinging angle of the swinging piece, and when the second limiting portion b250 swings and contacts with the first limiting portion b150, the first limiting portion b150 stops the second limiting portion b250 to continue swinging to limit the swinging angle of the swinging piece; the first and second position-limiting portions a140 and b150 are bent by extending the periphery of the first connecting plate 110 upward, the second and second position-limiting portions a240 and b250 are flat plates by extending the periphery of the second connecting plate 210 outward, the boundary of the second position-limiting portion a240 protrudes from the first position-limiting portion a140, and the boundary of the second position-limiting portion b250 protrudes from the first position-limiting portion b 150.

In addition, a first connection hole 111 is formed in the first connection plate 110, and a second connection hole 211 is formed in the second connection plate 210.

A chair comprises a chair back 500 and a seat 600, and comprises the chair back follow-up swinging structure, wherein a connecting part is fixedly arranged at the rear part or the lower part of the seat 600, a base 100 is fixedly connected with the connecting part, and a swinging part 200 is fixedly connected with the chair back 500; specifically, the connecting portion is a chassis 700, the chassis 700 includes a rocker 720 as the connecting portion, and the base 100 is fixedly connected to the rocker 720; the lower portion of the chair back 500 is opened with a receiving cavity 520 for receiving the swing device 1000 and the rocker 720.

A third connecting hole 710 is formed in the rocker 720, and screws sequentially pass through the third connecting hole 710 and the first connecting hole 111 and then are locked to fixedly connect the base 100 and the rocker 720; a fourth connecting hole 510 is formed in the lower portion of the chair back 500, and screws sequentially pass through the fourth connecting hole 510 and the second connecting hole 211 and then are locked to fixedly connect the swinging member 200 and the chair back 500; in order to ensure that the fourth connecting hole 510 and the screw are hidden, an open groove 560 for accommodating a decorative plate is arranged at the fourth connecting hole 510 and the periphery, and after the screw is installed, the decorative plate is only required to be buckled in the open groove 560.

The chair back 500 is a frame structure, which comprises a bottom frame side 530, a left frame side 540 and a right frame side 550, in order to hide the following swing structure of the chair back and increase the firmness between the base and the chassis and the firmness between the swing piece and the chair back, a bulge 531 is arranged in the middle of the bottom frame side 530, and an accommodating cavity 520 with an opening at the lower end is arranged in the bulge 531; a backrest surface is provided in the frame structure of the chair back 500.

In the using process, when a user sits on the seat and has a sitting posture of leaning left or right, the chair back 500 can swing left and right in a fitting manner along with the leaning left or right of the back of the human body, so that the function of the following swing of the chair back 500 and a healthy and comfortable office sitting posture are achieved; specifically, when the seat back 500 swings left and right, the swing member 200 swings left and right around the latch shaft 400, as shown in fig. 6, 14 and 15, in the state of a1, the user's back leans to the left, the seat back 500 and the swing lever 200 lean to the left, in the state of c1, the user's back leans to the right, the seat back 500 and the swing lever 200 lean to the right, and at the same time, the first stopper a140 and the first stopper b150 stop the excessive swing of the swing member 200 to limit the swing angle of the swing member 200, and due to the consistency of the elasticity and the elasticity of the compression springs 310 on the left and right sides of the latch shaft 400, the seat back 500 can swing left or right correspondingly under the back of the human body, the flexibility is high, the seat back 500 has a certain buffering function during the left and right swinging, the safety and the comfort are high, and the return of the compression springs 310 is facilitated without the external force, the chair back 500 is effectively reset by keeping balance and entering the intermediate state of b1, the function of follow-up swinging is realized, the ergonomics is met, and the chair back has higher flexibility by combining the function of forward and backward tilting of the chassis, and the requirements of different back postures of a human body are met.

Example 2:

the only difference from example 1 is:

as shown in fig. 7, the middle part of the swinging member 200 is rotatably connected with the base 100 through a rotating shaft, and the swinging member 200 is fixedly connected with the rotating shaft; the elastic body is a torsion spring 320, the axis of the torsion spring 320 is sleeved on the rotating shaft and is relatively fixed with the rotating shaft in the circumferential direction, and two torsion arms of the torsion spring 320 are simultaneously abutted to the base 100; the swinging member 200 swings left and right and is restored after swinging by the torsion spring 320.

Example 3:

the difference from example 1 is that:

as shown in fig. 16, a left armrest 1100 and a right armrest 1200 are respectively fixed to the left and right sides of the chair back 500, the lower portion of the left armrest 1100 and the lower portion of the right armrest 1200 are fixedly connected by a U-shaped frame 1300, a protrusion 1310 is provided in the middle of the U-shaped frame 1300, and a receiving space, not shown, is formed in the protrusion 1310 to receive the entire swing device 1000 and the chassis rocker. The accommodating space corresponds to the accommodating chamber 520 in embodiment 1.

The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A rocking device for a chair back, comprising:

a base (100) for integral support;

the swinging piece (200) is positioned at the upper part of the base (100), the middle part of the swinging piece (200) is rotatably connected with the base (100), and gaps are respectively reserved between the left side and the right side of the swinging piece (200) and the base (100) so that the swinging piece (200) does left-right swinging motion around a rotating point when stressed;

and an elastic body provided between the base (100) and the swing member (200) for swinging the swing member (200) and returning the swing member after swinging.

2. A rocking device for chair backs, as claimed in claim 1, wherein: the base (100) comprises a first connecting plate (110), and the periphery of the first connecting plate (110) is provided with a first connecting lug a (120) and a first connecting lug b (130) which extend upwards and are arranged in a front-back opposite mode; the swinging piece (200) comprises a second connecting plate (210), and second connecting lugs a (220) and second connecting lugs b (230) which extend downwards and are arranged in a front-back opposite mode are arranged on the periphery of the second connecting plate (210); the first connecting lug a (120) is rotatably connected with the second connecting lug a (220) through a rotating shaft, and the first connecting lug b (130) is rotatably connected with the second connecting lug b (230) through a rotating shaft.

3. A rocking device for chair backs, as claimed in claim 1, wherein: the left side and the right side of the rotating point are uniformly distributed with elastic bodies.

4. A rocking device for a chair back as claimed in claim 3, wherein: the elastic body is any one of a pressure spring (310) or elastic rubber.

5. A rocking device for chair backs, as claimed in claim 1, wherein: the middle part of the swinging piece (200) is rotatably connected with the base (100) through a rotating shaft, and the swinging piece (200) is fixedly connected with the rotating shaft; the elastic body is a torsion spring (320), the axis of the torsion spring (320) is sleeved on the rotating shaft and is kept relatively fixed with the rotating shaft in the circumferential direction, and two torsion arms of the torsion spring (320) are simultaneously abutted to the swinging piece (200) or the base (100).

6. The rocking device for chair backs as claimed in claim 1, wherein the angle of rocking of the rocking member (200) to the left is 5 ° ~ 15 ° and the angle of rocking to the right is 5 ° ~ 15 °.

7. A rocking device for a chair back as claimed in claim 2, wherein: the periphery of the first connecting plate (110) is provided with a first limiting portion a (140) and a first limiting portion b (150) which extend upwards and are arranged in a left-right opposite direction, the periphery of the second connecting plate (210) is provided with a second limiting portion a (240) and a second limiting portion b (250) which are arranged in a left-right opposite direction, when the second limiting portion a (240) swings and contacts the first limiting portion a (140), the first limiting portion a (140) stops the second limiting portion a (240) to continue swinging, and when the second limiting portion b (250) swings and contacts the first limiting portion b (150), the first limiting portion b (150) stops the second limiting portion b (250) to continue swinging.

8. A rocking device for a chair back as claimed in claim 2, wherein: a bolt shaft (400) is arranged among the first connecting lug a (120), the first connecting lug b (130), the second connecting lug a (220) and the second connecting lug b (230) in a penetrating mode to achieve rotary connection of the swinging piece and the base.

9. A chair, comprising a chair back (500) and a seat (600), characterized in that the chair comprises a rocking device for the chair back as claimed in any one of claims 1 ~ 8, a connecting part is fixedly arranged at the rear or lower part of the seat (600), a base (100) is fixedly connected with the connecting part, and a swinging part (200) is fixedly connected with the chair back (500).

10. A seat according to claim 9, wherein: the bottom of seat (600) is fixed and is equipped with chassis (700), chassis (700) including as connecting portion wane (720), base (100) fixed connection is on wane (720).

11. A seat according to claim 9, wherein: the connecting part is a supporting plate, and the base (100) is fixedly connected to the supporting plate.

12. A seat according to claim 9, wherein: the lower part of the chair back (500) is provided with an accommodating cavity (520) for accommodating the swinging device (1000) and the connecting part.