Damping structure for rear wheels of wheelchair

Abstract

The invention discloses a damping structure for rear wheels of a wheelchair, and belongs to the field of damping wheels. The damping structure comprises a frame, a lower connecting plate is arranged at the front end of the frame, a transverse support plate is hinged to the bottom of the lower connecting plate, a wheel support plate is arranged above the transverse connecting plate, rear wheels are arranged at the bottoms of two sides of the wheel support plate, and the two rear wheels are each provided with a motor for driving; a hinge shaft is arranged in the middle of the transverse connecting plate in the wheel direction, and the wheel supporting plate is arranged on the hinge shaft and can swing above a transverse connecting plate; two sides of the transverse connecting plate are each provided with a lower hinge block, and each lower hinge block is provided with a lower hinge hole; two sides of the rear end of the frame are each provided with an upper hinge block, and each upper hinge block is provided with an upper hinge hole; and the damping structure further comprises two spring shock absorbers, and two ends of the spring shock absorbers are respectively hinged with the upper hinge blocks and the lower hinge holes. According to the damping structure, by means of the structure, damping and stability of the rear wheels can be guaranteed, and meanwhile the ground holding performance of the rear wheels is met.

Description

technical field [0001] The invention relates to the field of damping wheels, in particular to a damping structure for rear wheels of a wheelchair. Background technique [0002] At present, most of the shock-absorbing structures of wheelchairs are provided with a shock-absorbing spring above the wheels to achieve shock-absorbing, and a shock-absorbing spring is arranged on each of the four wheels. Although the shock-absorbing effect is satisfied, the actual use process is very unstable, that is, It is said that during the shock absorption process, the shaking is very strong, and this effect seriously affects the experience. [0003] Secondly, since the wheels are all arranged at the bottom of a frame, once one wheel encounters an obstacle and tilts up, the other wheel at the front and rear must be in a vacant state. Although the spring can reduce the vacant height, its gripping effect will be greatly reduced. If the rear wheels are vacated, it will be difficult to adjust the...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the shock-absorbing structures of wheelchairs are provided with a shock-absorbing spring above the wheels to achieve shock-absorbing, and a shock-absorbing spring is arranged on each of the four wheels. Although the shock-absorbing effect is satisfied, the actual use process is very unstable, that is, It is said that during the shock absorption process, the shaking is very strong, and this effect seriously affects the experience

[0003] Secondly, since the wheels are all arranged at the bottom of a frame, once one wheel encounters an obstacle and tilts up, the other wheel at the front and rear must be in a vacant state. Although the spring can reduce the vacant height, its gripping effect will be greatly reduced. If the rear wheels are vacated, it will be difficult to adjust the direction (the adjustment of the direction of the wheelchair is realized by using the differential speed of the two rear wheels. Once a rear wheel cannot grip the ground, the relative movement of the two wheels will not be realized)

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