Self-balancing wheelchair suitable for stair climbing

Abstract

The invention discloses a self-balancing wheelchair suitable for stair climbing. The self-balancing wheelchair comprises a seat, a seat suspension beam, a hub and hub suspension beams. The seat is clamped to the seat suspension beam through a supporting column, the seat suspension beam is connected with the two sub suspension beams through a suspension beam shaft, and the hub suspension beams areconnected with the hub through a wheel axle; a rotating base and a motor are arranged at the side faces of the hub suspension beams, and a screw rod of the motor is sleeved with a fixing sleeve on thesupporting column; carbon brush frames are arranged at the two ends of the hub suspension beams, the carbon brush frames are provided with two carbon brushes with opposite electricities, the inner side of the hub is provided with a carbon brush ring corresponding to the carbon brushes, the outer side of the hub is provided with a wire wiring head, a cycle valve, an air pump and an air pump assembly, and the hub wraps rubber tires. By adopting a seat inclination adjusting system and a tire air pressure adjusting system, the horizontal state of the seat and the negative pressure state of the tires are adjusted separately, the self-balancing control function of the wheelchair is achieved, the comfort level and the safety of the wheelchair are improved, and the wheelchair can adapt to going upstairs or downstairs and crossing obstacles and various other terrains, and is suitable for large-range popularization.

Description

technical field [0001] The invention relates to the technical field of wheelchairs, in particular to a self-balancing wheelchair suitable for climbing stairs. Background technique [0002] Wheelchairs are an indispensable means of transportation for the elderly, the weak and those with lower limb disabilities. Wheelchairs are generally divided into ordinary wheelchairs and special wheelchairs. Ordinary wheelchairs are generally composed of four parts: wheelchair frame, wheels, brake device and seat. Ordinary wheelchairs do not have the functions of climbing stairs and cross-country obstacles, which greatly limits their scope of use. [0003] Therefore, technicians at home and abroad have proposed many special wheelchairs for climbing stairs and obstacles. There are many types of related devices and patents, mainly including crawler type, wheel group type and multi-legged type. Their functions and application characteristics are also different. There are pros and cons. For ...

AI Technical Summary

Problems solved by technology

For example, "a multifunctional wheelchair" proposed in patent CN106943248 A uses a gyroscope to measure the inclination of the seat seat, and makes the seat seat rise or fall on the suspension through the transmission structure of chains, gears, turbines, and worms, thereby ensuring the seat seat to a certain extent. However, since the wheels and the seat are on the same suspension structure, only two front or rear wheels can overcome obstacles at the same time. When a single front or rear wheel overcomes obstacles, the operation mode of the gyroscope will be confused. , causing the other front wheel to hang in the air, causing the risk of overturning. At the same time, its structure is complex, there are many spare parts, it is not easy to operate, and it is easy to damage

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