CN212489197U

CN212489197U - Swivel chair chassis with brake control function

Info

Publication number: CN212489197U
Application number: CN202021172535.4U
Authority: CN
Inventors: 王杰
Original assignee: Zhejiang Anji Mingcheng Chair Industry Co ltd
Current assignee: Zhejiang Anji Mingcheng Chair Industry Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-02-09
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses a swivel chair chassis with brake control function, which comprises five-star feet, wherein the tail ends of the five-star feet are fixed with outer cylinders; the inner cylinder is coaxially and rotatably connected in the outer cylinder; a wheel rod is coaxially and slidably connected in the inner cylinder; the bottom end of the wheel rod is fixedly connected with a caster; a wheel cover matched with the top surface of the caster is fixed on the outer wall of the inner cylinder; a brake pad is fixed on the inner side of the wheel cover; the top end of the outer cylinder is closed, and a spring is arranged between the wheel rod and the top wall of the outer cylinder; the device also comprises a limit plug extending into or out of the space between the wheel rod and the top wall of the outer cylinder and a control mechanism for controlling the limit plug to extend into or out of the space. Gravity control automatic brake when spacing stopper does not stretch into is more convenient and practical for traditional each truckle individual plectrum formula control brake, neither can influence the position adjustment of swivel chair, also can not produce unstable sensation when the people sits after to the posture fine setting. The arrangement of the limiting plug is used for temporarily conveying objects or pushing people occasionally to prevent the automatic braking function due to gravity, so that the swivel chair can adapt to more scenes.

Description

Swivel chair chassis with brake control function

Technical Field

The utility model relates to an office furniture field especially relates to swivel chair chassis.

Background

The swivel chair base is convenient to move due to the fact that the swivel chair base is provided with the rotating wheels, so that a person sitting on the swivel chair can easily displace the swivel chair when adjusting sitting postures, the swivel chair is difficult to adjust to a proper posture, sufficient support cannot be guaranteed, and the person sitting on the swivel chair cannot completely relax. The caster wheel with the brake can be selected usually, but when the brake is carried out, the brake needs to be carried out on each caster wheel respectively, so that the brake is very inconvenient. Therefore, there is a need for a swivel chair chassis with a brake control function, which enables a person to freely select whether to brake when necessary, and enables the casters to brake simultaneously when braking.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model provides a swivel chair chassis with brake control function makes the people who sits the swivel chair can select whether to let swivel chair bearing back automatic brake.

The utility model discloses a swivel chair chassis with brake control function, which comprises five-star feet, wherein the tail ends of the five-star feet are fixed with outer cylinders; the inner cylinder is coaxially and rotatably connected in the outer cylinder; a wheel rod is coaxially and slidably connected in the inner cylinder; the bottom end of the wheel rod is fixedly connected with a caster; a wheel cover matched with the top surface of the caster wheel is fixed on the outer wall of the inner cylinder; a brake pad is fixed on the inner side of the wheel cover; the top end of the outer cylinder is closed, and a spring is arranged between the wheel rod and the top wall of the outer cylinder; the device also comprises a limit plug extending into or out of the space between the wheel rod and the top wall of the outer cylinder, and a control mechanism for controlling the limit plug to extend into or out of the space.

When the limiting plug does not extend into the space between the wheel rod and the top wall of the outer cylinder, if a person sits on the swivel chair, the spring is compressed, the wheel rod slides along the inner cylinder, so that the distance between the wheel rod and the top wall of the outer cylinder is shortened, the caster is enabled to abut against the brake pad, and gravity control automatic braking is realized; when the spring is reset after the person stands up, the caster wheel is separated from the brake block, and the swivel chair can move freely. When the limiting plug stretches into the space between the wheel rod and the top wall of the outer barrel, the compression of the spring is blocked, and the swivel chair can move freely even if a person sits on the swivel chair and still cannot brake.

Compared with the prior art, the utility model discloses following beneficial effect has:

gravity control automatic brake when spacing stopper does not stretch into is more convenient and practical for traditional each truckle is group piece formula control brake alone, neither can influence the position adjustment of swivel chair, also can not produce unstable sensation when the people sits after to the posture fine setting. The arrangement of the limiting plug is used for temporarily conveying objects or pushing people occasionally to prevent the automatic braking function due to gravity, so that the swivel chair can adapt to more scenes.

Drawings

Fig. 1 is a schematic cross-sectional view of a swivel chair chassis with brake control function in an automatic braking state according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a swivel chair chassis with brake control function in a non-braking state according to an embodiment of the present invention.

In the above drawings: 1. five-star feet; 2. an outer cylinder; 3. an inner barrel; 4. a wheel lever; 5. a caster wheel; 6. a wheel cover; 7. a spring; 8. a limiting plug; 9. a circular table cavity; 10. a shaft cylinder; 11. a middle shaft; 12. a central disk; 13. a connecting rod; 14. a strip-shaped through hole; 15. and (5) fastening a knob.

Detailed Description

As shown in fig. 1 and 2, an embodiment of the present invention provides a swivel chair chassis with a brake control function, which includes five-star legs 1, wherein an outer cylinder 2 is fixed at the end of each five-star leg 1; the inner cylinder 3 is coaxially and rotatably connected in the outer cylinder 2; a wheel rod 4 is coaxially and slidably connected in the inner cylinder 3; the bottom end of the wheel rod 4 is fixedly connected with a caster 5; a wheel cover 6 matched with the top surface of the caster 5 is fixed on the outer wall of the inner barrel 3; a brake pad is fixed on the inner side of the wheel cover 6; the top end of the outer cylinder 2 is closed, and a spring 7 is arranged between the wheel rod 4 and the top wall of the outer cylinder 2; the device also comprises a limit plug 8 extending into or out of the space between the wheel rod 4 and the top wall of the outer cylinder 2, and a control mechanism for controlling the limit plug 8 to extend into or out of the space.

When the limiting plug 8 does not extend into the space between the wheel rod 4 and the top wall of the outer cylinder 2, if a person sits on the swivel chair, the spring 7 is compressed, the wheel rod 4 slides along the inner cylinder 3, so that the distance between the wheel rod 4 and the top wall of the outer cylinder 2 is shortened, the caster 5 is enabled to abut against a brake pad, and gravity-controlled automatic braking is realized; when the person stands up, the spring 7 is reset, the caster 5 is separated from the brake block, and the swivel chair can move freely. When the limiting plug 8 extends into the space between the wheel rod 4 and the top wall of the outer cylinder 2, the compression of the spring 7 is blocked, and the swivel chair can move freely even if a person sits on the swivel chair and still cannot brake.

Gravity control automatic brake when stop plug 8 does not stretch into is more convenient and practical for traditional each truckle 5 individual plectrum formula control brake, neither can influence the position adjustment of swivel chair, also can not produce unstable sensation when the people sits the back to the posture fine setting. And the arrangement of the limiting plug 8 can prevent the function of automatic braking due to gravity when the swivel chair is used for conveying objects or pushing people occasionally and temporarily, so that the swivel chair can adapt to more scenes.

Preferably, the five-pointed star foot 1 is hollow and is provided with a circular table cavity 9 in the center, and a shaft cylinder 10 is fixed on the top surface of the circular table cavity 9; the control mechanism comprises a middle shaft 11 which is connected in the shaft barrel 10 in a sliding manner, the bottom end of the middle shaft 11 is fixedly connected with a central disc 12, and the edge of the central disc 12 is hinged with a connecting rod 13; one end, far away from the central disc 12, of the connecting rod 13 is hinged to the limiting plug 8, and the limiting plug 8 is located in the five-star foot 1 and is in sliding connection with the five-star foot 1. When the central shaft 11 drives the central disc 12 to move upwards, the limiting plug 8 is driven to slide towards the center along the interior of the five-star foot 1 and is separated from the range of the outer cylinder 2, and the swivel chair can brake due to bearing; when the middle shaft 11 and the central disc 12 are pressed downwards, the limiting plug 8 is pushed to slide outwards to separate the top wall of the outer cylinder 2 from the wheel rod 4, so that the swivel chair cannot be automatically braked due to load bearing. The casters 5 are controlled by the central shaft 11 in a unified way, so that the adjustment is convenient.

Preferably, one end of the limiting plug 8 facing the outer barrel 2 is arc-shaped, is attached to the inner wall of the outer barrel 2, and is provided with a yielding notch for accommodating the spring 7. The limiting plug 8 can be conveniently positioned after entering between the wheel rod 4 and the top wall of the outer cylinder 2.

Preferably, the end of the limit plug 8 facing the outer cylinder 2 has a wedge-shaped inclined surface. The limiting plug 8 can conveniently extend into the space between the wheel rod 4 and the top wall of the outer cylinder 2.

Preferably, the junction of the inclined plane and the plane of the limiting plug 8 is rounded. The transition is smoother, so that the process of the limiting plug 8 stretching into place is smoother.

Preferably, the shaft cylinder 10 is provided with a strip-shaped through hole 14 extending along the vertical direction; and a fastening knob 15 which penetrates through the strip-shaped through hole 14 and is in threaded connection with the middle shaft 11. After the middle shaft 11 rises to a designated position, the fastening knob 15 is screwed, so that the fastening knob 15 and the middle shaft 11 clamp the shaft barrel 10, the middle shaft 11 is fixed, and the revolving chair maintains the state of load-bearing automatic braking. When the middle shaft 11 descends and is fixed, the swivel chair maintains the state of being incapable of braking.

Preferably, the device further comprises a control lever hinged with the middle shaft 11 and the shaft cylinder 10 respectively. The control deflector rod with the same height adjustment and backrest angle as the common swivel chair can be arranged to replace the fastening knob 15, so that the use is more convenient.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a swivel chair chassis with brake control function which characterized in that: the device comprises five-star legs, wherein the tail ends of the five-star legs are fixedly provided with outer cylinders; the inner cylinder is coaxially and rotatably connected in the outer cylinder; a wheel rod is coaxially and slidably connected in the inner cylinder; the bottom end of the wheel rod is fixedly connected with a caster; a wheel cover matched with the top surface of the caster wheel is fixed on the outer wall of the inner cylinder; a brake pad is fixed on the inner side of the wheel cover; the top end of the outer cylinder is closed, and a spring is arranged between the wheel rod and the top wall of the outer cylinder; the device also comprises a limit plug extending into or out of the space between the wheel rod and the top wall of the outer cylinder, and a control mechanism for controlling the limit plug to extend into or out of the space.

2. A swivel chair chassis with brake control function according to claim 1, characterized in that: the five-star foot is hollow, a circular table cavity is formed in the center of the five-star foot, and a shaft barrel is fixed on the top surface of the circular table cavity; the control mechanism comprises a middle shaft which is connected in the shaft barrel in a sliding manner, the bottom end of the middle shaft is fixedly connected with a central disc, and the edge of the central disc is hinged with a connecting rod; one end of the connecting rod, which is far away from the central disc, is hinged with the limiting plug, and the limiting plug is positioned in the five-star foot and is in sliding connection with the five-star foot.

3. A swivel chair chassis with brake control function according to claim 2, characterized in that: the limiting plug is arc-shaped at one end facing the outer barrel, is attached to the inner wall of the outer barrel and is provided with a yielding opening for accommodating the spring.

4. A swivel chair chassis with brake control function according to claim 3, characterized in that: the end part of the limiting plug, which faces the outer barrel, is provided with a section of wedge-shaped inclined surface.

5. A swivel chair chassis with brake control function as claimed in claim 4, wherein: and the junction of the inclined plane and the plane of the limiting plug is rounded.

6. A swivel chair chassis with brake control function as claimed in claim 5, wherein: the shaft cylinder is provided with a strip-shaped through hole extending along the vertical direction; the fastening knob penetrates through the strip-shaped through hole and is in threaded connection with the middle shaft.

7. A swivel chair chassis with brake control function as claimed in claim 5, wherein: and the control deflector rod is hinged with the middle shaft and the shaft cylinder respectively.