CN202933123U - Self-balancing adjusting mechanism of wheel chair and seat - Google Patents

Abstract

The utility model relates to a wheelchair seat self-balancing adjustment mechanism, which belongs to the technical field of wheelchairs. The utility model comprises a seat installed on a wheelchair frame, a shock absorbing spring, a support plate, a heavy pendulum, a roller, an arc track, a limit pin, a mandrel, a movable plate, a positioning plate, a guide pin, a support rod, a support Lever pin, deadbolt, return spring. A damping spring is installed between the seat and the support plate, and a balance weight is welded on the support plate. The mandrel passes through the balance weight. Roller, its side end are provided with limit pin, and seat back is hinged with strut bar by strut pin, and the other end of strut bar is equipped with guide pin, and guide pin can snap in the annular groove of arc track. The utility model enables the wheelchair to keep the center of gravity of the seat balanced, stable and reliable no matter what road conditions the wheelchair is walking on, so that the user can always operate the wheelchair in a level and stable state. Improve the comfort and safety of the wheelchair.

Description

A wheelchair seat self-balancing adjustment mechanism

technical field

The utility model relates to a wheelchair seat self-balancing adjustment mechanism, which belongs to the technical field of wheelchairs. the

Background technique

The wheelchair is an important tool for rehabilitation. It is not only a means of transportation for the physically disabled, but more importantly, it enables them to perform physical exercises and participate in social activities with the help of wheelchairs. Most of the stair-climbing wheelchairs currently on the market have a key problem, that is, the existing wheelchairs cannot realize the adjustment of the center of gravity when climbing stairs and switching from flat to flat, or the mechanism for adjusting the center of gravity is complicated and poor in operability. the

Contents of the invention

The utility model aims at the problem that the center of gravity of the occupant's body is unstable due to the inclination of the wheelchair when the stair-climbing wheelchair is converted from the functional position of walking on the flat ground to the functional position of the stairs, and the utility model provides a self-balancing seat. It is a seat self-balancing adjustment mechanism that ensures that the user can always maintain a balanced and stable sitting posture when the wheelchair is in different states. the

The technical scheme of the utility model is: a wheelchair seat self-balancing adjustment mechanism, including a seat 1 installed on the wheelchair frame, a shock absorbing spring 2, a support plate 3, a heavy pendulum 4, a roller 5, and an arc track 6 , Limit pin 7, mandrel 8, movable disc 9, positioning disc 10, guide pin 11, support rod 12, strut pin 13, locking bolt 14, return spring 15. A damping spring 2 is installed between the seat 1 and the support plate 3, a balance weight is welded on the support plate 3, the mandrel 8 passes through the balance weight, the lower end of the mandrel 8 is connected to the weight pendulum 4, and the weight pendulum 4 is installed in a concentric arc On the track 6, the lower end of the heavy pendulum 4 is provided with a roller 5, and its side end is provided with a limit pin 7. The back of the seat 1 is hinged with the support rod 12 through the support rod pin 13, and the other end of the support rod 12 is equipped with a guide pin 11. The guide pin 11 can snap into the annular groove of the arc track 6 . the

The positioning plate 10 connected to the mandrel 8, the movable plate 9 fixed on the wheelchair frame, the damping spring 2, the locking pin 14 and the return spring 15 sleeved on the locking pin 14 form the mandrel locking mechanism. Mechanisms, they can lock the seat 1 in place. the

The re-swing 4 is a fan-shaped re-swing. the

The utility model provides a seat self-balancing adjustment mechanism for a wheelchair to keep its seat surface level when going up and down stairs, which can make the occupant maintain a balanced sitting posture when the wheelchair is tilted without tilting with the wheelchair, which can effectively improve the safety of the user sense and comfort. the

The working principle of the utility model is: when the center of gravity of the wheelchair changes, the lock pin 14 is opened, and the moment of the front and rear ends of the seat 1 changes. The mandrel 8 transmits the torque to the heavy pendulum 4, and the heavy pendulum 4 slides forward under the action of the torque. Due to the action of the arc track 6, the seat 1 swings according to a certain arc. When it swings to a suitable angle, The locking pin 14 relies on the elastic force of the return spring 15 to be inserted into the socket at a corresponding angle to lock the seat 1, so that the seat 1 remains stable. When the wheelchair got back to the horizontal position, the locking pin 14 was opened, and the seat 1 was returned to the horizontal position by the balance force, and the locking pin 14 was inserted into the corresponding horizontal position jack by the elastic force of the return spring 15, and the seat 1 was locked. the

The beneficial effect of the utility model is that no matter what road conditions the wheelchair walks on, the center of gravity of the seat can always be kept balanced and stable, and the user can always operate the wheelchair in a level and stable state. Improve the comfort and safety of the wheelchair. the

Description of drawings

Fig. 1 is a schematic diagram of the front view of the utility model;

Fig. 2 is a left view schematic diagram of the utility model;

Fig. 3 is a schematic sectional view of the A-A direction in the left view 2 of the utility model;

Fig. 4 is a schematic front view of the seat positioning mechanism of the present invention;

Fig. 5 is a schematic left view of the seat positioning mechanism of the present invention.

The labels in the figure are: 1: Seat, 2: Damping spring, 3: Support plate, 4: Heavy pendulum, 5: Roller, 6: Arc track, 7: Limit pin, 8: Mandrel, 9: Movable plate, 10: positioning plate, 11: guide pin, 12: support rod, 13: support rod pin, 14: lock bolt, 15: return spring. the

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model will be further described, but the content of the utility model is not limited to said range. the

Embodiment 1: As shown in Figures 1-5, a wheelchair seat self-balancing adjustment mechanism includes a seat 1 installed on the wheelchair frame, a damping spring 2, a support plate 3, a heavy pendulum 4, a roller 5, Arc track 6, limit pin 7, mandrel 8, movable disc 9, positioning disc 10, guide pin 11, support rod 12, strut pin 13, locking bolt 14, return spring 15. A damping spring 2 is installed between the seat 1 and the support plate 3, a balance weight is welded on the support plate 3, the mandrel 8 passes through the balance weight, the lower end of the mandrel 8 is connected to the weight pendulum 4, and the weight pendulum 4 is installed in a concentric arc On the track 6, the lower end of the heavy pendulum 4 is provided with a roller 5, and its side end is provided with a limit pin 7. The back of the seat 1 is hinged with the support rod 12 through the support rod pin 13, and the other end of the support rod 12 is equipped with a guide pin 11. The guide pin 11 can snap into the annular groove of the arc track 6 . The positioning disc 10 connected to the mandrel 8, the movable disc 9 fixed on the wheelchair frame, the damping spring 2, the locking pin 14 and the return spring 15 sleeved on the locking pin 14 form the mandrel locking mechanism. Re-swing 4 is a fan-shaped re-swing. the

Embodiment 2: As shown in Figures 1-5, a wheelchair seat self-balancing adjustment mechanism includes a seat 1 installed on the wheelchair frame, a shock absorbing spring 2, a support plate 3, a heavy pendulum 4, a roller 5, Arc track 6, limit pin 7, mandrel 8, movable disc 9, positioning disc 10, guide pin 11, support rod 12, strut pin 13, locking bolt 14, return spring 15. A damping spring 2 is installed between the seat 1 and the support plate 3, a balance weight is welded on the support plate 3, the mandrel 8 passes through the balance weight, the lower end of the mandrel 8 is connected to the weight pendulum 4, and the weight pendulum 4 is installed in a concentric arc On the track 6, the lower end of the heavy pendulum 4 is provided with a roller 5, and its side end is provided with a limit pin 7. The back of the seat 1 is hinged with the support rod 12 through the support rod pin 13, and the other end of the support rod 12 is equipped with a guide pin 11. The guide pin 11 can snap into the annular groove of the arc track 6 . the

Embodiment 3: As shown in Figures 1-5, a wheelchair seat self-balancing adjustment mechanism includes a seat 1 installed on the wheelchair frame, a shock absorbing spring 2, a support plate 3, a heavy pendulum 4, a roller 5, Arc track 6, limit pin 7, mandrel 8, movable disc 9, positioning disc 10, guide pin 11, support rod 12, strut pin 13, locking bolt 14, return spring 15. A damping spring 2 is installed between the seat 1 and the support plate 3, and a balance weight is welded on the support plate 3, and the spindle 8 passes through the balance weight, thereby transmitting the torque to the spindle 8 and the spindle locking mechanism. The mandrel locking mechanism is composed of a positioning plate 10 connected to the mandrel 8, a movable plate 9 fixed on the wheelchair frame, a damping spring 2, a locking pin 14 and a return spring 15 sleeved on the locking pin 14. . The lower end of the mandrel 8 is connected with the heavy pendulum 4, and the heavy pendulum 4 is installed on the concentric arc track 6. The lower end of the heavy pendulum 4 is provided with a roller 5, and its side end is provided with a limit pin 7. The support rod 12 is hinged, and the other end of the support rod 12 is equipped with a guide pin 11, and the guide pin 11 can be snapped into the annular groove of the arc track 6. the

Claims (3)

1. A self-balancing adjustment mechanism for a wheelchair seat, characterized in that it includes a seat (1), a damping spring (2), a support plate (3), a weight pendulum (4), and a roller mounted on the wheelchair frame. (5), arc track (6), limit pin (7), mandrel (8), movable plate (9), positioning plate (10), guide pin (11), support rod (12), support rod Pin (13), locking pin (14), return spring (15); damping spring (2) is installed between the seat (1) and support plate (3), and a balance is welded on the support plate (3) Heavy, the spindle (8) passes through the balance weight, the lower end of the spindle (8) is connected to the heavy pendulum (4), the heavy pendulum (4) is installed on the concentric arc track (6), and the lower end of the heavy pendulum (4) is provided with rollers (5) The side end is provided with a limit pin (7), the seat back of the seat (1) is hinged with the support rod (12) through the support rod pin (13), and the other end of the support rod (12) is installed with a guide pin ( 11), the guide pin (11) can snap into the annular groove of the arc track (6). 2. The wheelchair seat self-balancing adjustment mechanism according to claim 1, characterized in that: the positioning plate (10) connected to the spindle (8), the movable plate (9) fixed on the wheelchair frame, Damping spring (2), deadbolt (14) and the return spring (15) that is sleeved on the deadbolt (14) form the mandrel locking mechanism. 3. The wheelchair seat self-balancing adjustment mechanism according to claim 1, characterized in that: the heavy pendulum (4) is a fan-shaped heavy pendulum.

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