Wheelchair high in safety coefficient and capable of preventing stall damage

Abstract

The invention relates to the technical field of medical rehabilitation equipment, and discloses a wheelchair high in safety coefficient and capable of preventing stall injury, the wheelchair comprises a wheel driving shaft and a magnetostrictive shaft, a movable groove is formed in the wheel driving shaft, a reset spring is fixedly connected to the inner wall of the movable groove, and a dielectric plate is fixedly connected to the outer side of the reset spring; a positive plate is fixedly connected into the wheel driving shaft, and a negative plate is fixedly connected into the wheel driving shaft. According to the wheelchair high in safety coefficient and capable of preventing stall damage, when the wheelchair goes down a slope, due to the fact that the speed is too high, the rotating speed of a wheel driving shaft is increased, a dielectric plate moves outwards along a movable groove, after the working voltage of a piezoresistor is reached, an external magnetic field is connected, a magnetostrictive shaft is magnetized to extend, and therefore a friction patch is ejected out along a containing groove; the friction patches are located on the outer sides of the tires and make contact with the ground in the rotating process of the tires, the friction coefficient of the tires is increased, the wheelchair speed is reduced, and the safety performance of the tires is improved.

Description

technical field [0001] The invention relates to the technical field of medical rehabilitation equipment, in particular to a wheelchair with a high safety factor that can prevent stall damage. Background technique [0002] Wheelchairs are chairs equipped with wheels that can help replace walking. They are divided into electric and manual folding wheelchairs. There are many types of wheelchairs on the market. According to materials, they can be divided into aluminum alloy, light materials and steel. For example, they can be divided into ordinary wheelchairs by type. And special wheelchairs, which can be used as an important mobile tool for the wounded, sick, and disabled at home for rehabilitation, turnover transportation, medical treatment, and outing activities. Wheelchairs not only meet the needs of the physically disabled and people with reduced mobility, but more importantly, they are convenient for family members to move and Take care of patients and enable them to exerc...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a wheelchair with a high safety factor that can prevent stall damage. It has the advantages of automatic braking to prevent stall and high safety performance. Stall is a potential safety hazard, and the disabled or patients often cannot react quickly to brake and stop, and it is easy to cause the wheelchair to collide due to stall, causing personal injury.

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