A resettable swivel chair

Abstract

The utility model discloses a resettable swivel chair belongs to chair technical field, including bottom disc and cushion, four support legs are placed on the bottom disc, four support legs are fixedly connected with same connecting plate, and the auxiliary device is assembled on the connecting plate. In the utility model, the elastic force of coil spring drives the rotation of the rotating shaft, further drives the round plate to drive the cushion and the shell to slowly incline to one side, makes the front edge of cushion lower, and the old people are conveniently seated, after sitting down, the shell rotates and is clamped on the upper surface of the limiting ring outside the connecting rod, thereby limiting the inclination angle, keeping the cushion in the stable position, when the old people get up, the force of the cushion is reduced, the coil spring exerts the reverse elastic force on the round plate, makes the rotating shaft drive the cushion to return to the original state of the inclination device, and slightly lifts up to the front upper side, forms the auxiliary upward thrust, and helps the old people to more easily complete the getting-up action, improves the security and the convenience.

Description

Technical Field

[0001] This application relates to the field of seating technology, specifically to a resettable swivel chair. Background Technology

[0002] Most of the chairs for the elderly on the market are fixed structures. Although they provide some support, they have the following problems during use: First, the chairs lack effective assistance when the elderly sit down or get up, especially for the elderly with weak leg strength, which can easily lead to difficulty in getting up and unstable movements. Second, traditional chairs are difficult to use in conjunction with assistive devices such as canes. When users temporarily place canes, the canes are prone to tipping over, which is not only inconvenient to use, but may also affect walking safety. Utility Model Content

[0003] The purpose of this invention is to provide a reversible swivel chair to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution: a reversible swivel chair, including a chassis and a seat cushion, four support legs are placed on the chassis, the same connecting plate is fixedly connected to the four support legs, an auxiliary device is assembled on the connecting plate, a backrest is fixedly connected to the outside of the seat cushion, and armrests are symmetrically installed on the outside of the seat cushion;

[0005] The auxiliary device includes a connecting rod, on which a ball is fixedly connected. A shell is provided around the ball, and a rotating shaft is connected through the shell, forming a rotatable connection between the rotating shaft and the ball. Circular plates are fixedly connected to both ends of the rotating shaft, and two coil springs are provided around the rotating shaft.

[0006] Optionally, the auxiliary device includes a limiting ring, which is sleeved on the connecting rod, and the housing overlaps the upper surface of the limiting ring.

[0007] Optionally, the inner diameter of the casing is larger than the diameter of the sphere's cross-section, and a movable connection is formed between the casing and the sphere.

[0008] Optionally, one end of the coil spring is fixedly connected to the outside of the circular plate, and the other end of the coil spring is fixedly connected to the outside of the sphere.

[0009] Optionally, both the seat cushion and the backrest are designed in the shape of a ginkgo leaf to conform to the curves of the thighs and lower back.

[0010] Optionally, the connecting rod and the connecting plate are fixedly connected by bearings.

[0011] Optionally, the armrest cover is provided with a connecting ring, and a retaining ring for fixing the cane is fixedly connected to the outside of the connecting ring.

[0012] Compared with the prior art, this application has at least the following beneficial effects:

[0013] 1. In this utility model, an auxiliary device is set under the seat cushion. The auxiliary device includes a connecting rod, a ball, a rotating shaft, a circular plate, and two coil springs. The rotating shaft is connected through the inside of the ball, and the circular plates are fixedly connected to both ends of the rotating shaft. One end of the coil spring is fixed to the outside of the circular plate, and the other end is fixed to the outside of the ball. When the elderly person is about to sit down, the elastic force of the coil spring drives the rotating shaft to rotate, which in turn drives the circular plate to slowly tilt the seat cushion and the cover to one side, so that the front edge of the seat cushion is lowered, making it easier for the elderly person to sit down. After sitting down, the cover rotates and is locked on the upper surface of the limiting ring outside the connecting rod, thereby limiting the tilt angle and keeping the seat cushion in a stable position. When the elderly person gets up, the pressure on the seat cushion is reduced, and the coil spring applies a reverse elastic force to the circular plate, so that the rotating shaft drives the seat cushion to rotate back to the initial state of the tilting device and lift it slightly forward and upward, forming an auxiliary upward thrust to help the elderly person complete the getting up action more easily, thus improving safety and convenience.

[0014] 2. In this utility model, a connecting ring is sleeved on the outside of the armrest, and a retaining ring structure is fixedly connected to the outside of the connecting ring. The retaining ring can flexibly clamp canes of different sizes, adapting to the diameter of various assistive devices. When in use, the elderly can quickly insert the cane into the retaining ring before sitting down or after standing up, achieving temporary stable placement and preventing the cane from slipping on the ground or hitting the legs, reducing the burden of operation. At the same time, the retaining ring is located near the end of the armrest, which does not affect the space range for sitting or standing, effectively improving the practicality and compatibility of the overall device. Attached Figure Description

[0015] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0016] Figure 1 This is a three-dimensional structural diagram of a repositionable swivel chair provided in Embodiment 1 of this application;

[0017] Figure 2 This is a three-dimensional structural diagram of a repositionable swivel chair cushion provided in Embodiment 1 of this application;

[0018] Figure 3 This is a schematic diagram of a reversible rotating chair cover that can be separated from the sphere, provided in Embodiment 2 of this application;

[0019] Figure 4A resettable swivel chair provided in Embodiment 1 of this application Figure 3 Enlarged structural diagram of part A in the middle;

[0020] Figure 5 A resettable swivel chair provided in Embodiment 1 of this application Figure 2 Enlarged structural diagram of part B.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Chassis; 2. Support leg; 3. Connecting plate; 4. Auxiliary device; 401. Connecting rod; 402. Ball; 403. Limiting ring; 404. Housing; 405. Rotating shaft; 406. Circular plate; 407. Coil spring; 5. Seat cushion; 6. Armrest; 7. Connecting ring; 8. Snap ring; 9. Backrest. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Please see Figures 1-5 ;

[0025] First embodiment:

[0026] This utility model provides a technical solution: a reversible swivel chair, including a base 1 and a seat cushion 5. Four support legs 2 are placed on the base 1. The same connecting plate 3 is fixedly connected to the four support legs 2. An auxiliary device 4 is assembled on the connecting plate 3. A backrest 9 is fixedly connected to the outside of the seat cushion 5. Armrests 6 are symmetrically installed on the outside of the seat cushion 5.

[0027] The auxiliary device 4 includes a connecting rod 401, a ball 402 fixedly connected to the connecting rod 401, a housing 404 covering the ball 402, and a rotating shaft 405 passing through the housing 404. The rotating shaft 405 and the ball 402 are rotatably connected. Through the rotatable connection between the rotating shaft 405 and the ball 402, the rotating shaft 405 can rotate relative to the ball 402. When the user sits down or gets up, the coil spring 407 drives the rotating shaft 405 to rotate, while the ball 402 itself remains stable and stationary, effectively controlling the angle change of the seat cushion 5, while ensuring the smoothness of the chair surface movement and the durability of the structure.

[0028] Two circular plates 406 are fixedly connected to both ends of the rotating shaft 405, and two coil springs 407 are sleeved on the rotating shaft 405.

[0029] Specifically, such as Figures 2-4As shown, the auxiliary device 4 includes a limiting ring 403, which is sleeved on the connecting rod 401. A housing 404 overlaps the upper surface of the limiting ring 403. The inner diameter of the housing 404 is larger than the diameter of the cross-section of the ball 402, and a movable connection is formed between the housing 404 and the ball 402. Because the inner diameter of the housing 404 is larger than the diameter of the ball 402, a movable connection is formed, allowing the housing 404 to slide freely or swing slightly outside the ball 402. This structure can automatically adapt to angle changes when the chair surface is tilted, improving the self-adaptability of the entire auxiliary mechanism during operation and reducing structural jamming.

[0030] One end of the coil spring 407 is fixedly connected to the outside of the circular plate 406, and the other end of the coil spring 407 is fixedly connected to the outside of the ball 402. The seat cushion 5 and the backrest 9 are both designed in the shape of ginkgo leaves to fit the curvature of the thighs and lower back. One end of the coil spring 407 is fixed to the circular plate 406, and can release or retract the elastic force as the circular plate 406 rotates. This connection method realizes the stable transmission of elastic force, so that the spring can effectively control the tilting and resetting of the seat cushion 5, which is beneficial to the smoothness and responsiveness of the movement.

[0031] During operation, an auxiliary device 4 is installed under the seat cushion 5. The auxiliary device 4 includes a connecting rod 401, a ball 402, a rotating shaft 405, a circular plate 406, and two coil springs 407. The rotating shaft 405 is connected through the inside of the ball 402, and the circular plate 406 is fixedly connected to both ends of the rotating shaft 405. One end of the coil spring 407 is fixed to the outside of the circular plate 406, and the other end is fixed to the outside of the ball 402. When the elderly person is about to sit down, the elasticity of the coil spring 407 drives the rotating shaft 405 to rotate, which in turn drives the circular plate 406 to slowly move the seat cushion 5 and the shell 404 to one side. The tilting mechanism lowers the front edge of the seat cushion 5, making it easier for the elderly to sit down. After sitting down, the housing 404 rotates and locks onto the upper surface of the limiting ring 403 outside the connecting rod 401, thereby limiting the tilt angle and keeping the seat cushion 5 in a stable position. When the elderly person gets up, the pressure on the seat cushion is reduced, and the coil spring 407 applies a reverse elastic force to the circular plate 406, causing the rotating shaft 405 to drive the seat cushion 5 to rotate back to its initial state of the tilting device and lift it slightly forward and upward, forming an auxiliary upward thrust to help the elderly person complete the getting-up action more easily, improving safety and convenience.

[0032] Second embodiment:

[0033] Specifically, such as Figure 5As shown, the connecting rod 401 and the connecting plate 3 are fixedly connected by a bearing. The armrest 6 is covered with a connecting ring 7. A retaining ring 8 for fixing the cane is fixedly connected to the outside of the connecting ring 7. The connecting ring 7 serves as a structural support. The retaining ring 8 is installed on its outside and can be stably suspended on the outside of the armrest 6. This fit makes the retaining ring 8 less likely to fall off or shake, thus providing a more reliable locking platform for canes of different sizes and preventing them from slipping out or falling over during use.

[0034] During operation, a connecting ring 7 is fitted on the outside of the armrest 6, and a retaining ring 8 is fixedly connected to the outside of the connecting ring 7. The retaining ring 8 can flexibly clamp canes of different sizes to accommodate various assistive device diameters. When in use, the elderly can quickly insert the cane into the retaining ring 8 before sitting down or after standing up to achieve temporary stable placement, preventing the cane from slipping on the ground or hitting the legs, reducing the burden of operation. At the same time, the retaining ring 8 is located close to the end of the armrest 6, which does not affect the space range for sitting or standing, effectively improving the practicality and compatibility of the overall device.

[0035] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A reversible swivel chair, comprising a base (1) and a seat cushion (5), characterized in that, Four support legs (2) are placed on the chassis (1), and the same connecting plate (3) is fixedly connected to the four support legs (2). An auxiliary device (4) is assembled on the connecting plate (3). A backrest (9) is fixedly connected to the outside of the seat cushion (5), and armrests (6) are symmetrically installed on the outside of the seat cushion (5). The auxiliary device (4) includes a connecting rod (401), on which a ball (402) is fixedly connected. The ball (402) is fitted with a housing (404), and a rotating shaft (405) is connected through the housing (404). The rotating shaft (405) and the ball (402) are rotatably connected. The two ends of the rotating shaft (405) are fixedly connected with circular plates (406), and two coil springs (407) are fitted on the rotating shaft (405).

2. A resettable swivel chair according to claim 1, characterized in that, The auxiliary device (4) includes a limiting ring (403), which is sleeved on the connecting rod (401), and the housing (404) overlaps the upper surface of the limiting ring (403).

3. A reversible swivel chair according to claim 1, characterized in that, The inner diameter of the shell (404) is larger than the diameter of the cross-section of the sphere (402), and the shell (404) and the sphere (402) form a movable connection.

4. A reversible swivel chair according to claim 1, characterized in that, One end of the coil spring (407) is fixedly connected to the outside of the circular plate (406), and the other end of the coil spring (407) is fixedly connected to the outside of the sphere (402).

5. A reversible swivel chair according to claim 1, characterized in that, Both the seat cushion (5) and the backrest (9) are designed in the shape of a ginkgo leaf to fit the curves of the thighs and lower back.

6. A resettable swivel chair according to claim 1, characterized in that, The connecting rod (401) and the connecting plate (3) are fixedly connected by bearings.

7. A resettable swivel chair according to claim 1, characterized in that, The armrest (6) is covered with a connecting ring (7), and a retaining ring (8) for fixing the cane is fixedly connected to the outside of the connecting ring (7).

Images