Wheelchair power-assisted steering device

Abstract

The invention aims at providing a wheelchair power-assisted steering device. A handheld pipe is connected with a long vertical pipe through a pin shaft, the handheld pipe and the long vertical pipe are arranged on a right side pipe of a wheelchair frame, a first synchronous pulley is installed on the long vertical pipe, a second synchronous pulley and a third synchronous pulley are installed in a middle shaft, and a fourth synchronous pulley is installed on a projecting shaft of a gear motor. A first synchronous belt is wound around the first synchronous pulley and the second synchronous pulley, a second synchronous belt is wound around the third synchronous pulley and the fourth synchronous pulley, the first end of a long connecting rod is connected with a steering piece, and the steering piece is connected with the middle shaft. The second end of the long connecting rod is connected with a steering rod, the steering rod is connected with a steering rudder, and the two ends of the steering rudder are connected with a first short connecting rod and a second short connecting rod respectively. The first short connecting rod is connected with a first front trundle, and the second short connecting rod is connected with a second front trundle. The difficulty degree of a patient during use is reduced, and steering safety and flexibility are improved.

Description

technical field [0001] The invention relates to an auxiliary appliance for the disabled, specifically a wheelchair device. Background technique [0002] According to incomplete statistics, in 2006, the total number of all kinds of disabled people in my country was about 82.96 million, accounting for 6.34% of the total population of the country. There are a large number of elderly and disabled people with inconvenient lower limbs in today's society, which makes the design of handicapped tools for the purpose of improving their quality of life increasingly important. Electric wheelchair is a good auxiliary tool for people with lower limb disabilities to travel, and it is a necessary equipment to improve their freedom of movement and enable them to better integrate into the lives of healthy people. Due to the limited space, small size and certain speed of the electric wheelchair, the requirements for steering control during the wheelchair are very high. What the existing desi...

AI Technical Summary

Problems solved by technology

A wheelchair steering mechanism (Patent No. 01105514.6) proposes a wheelchair steering mechanism that utilizes a pair of self-locking worm gears and a four-bar drive train, but the steering mechanism is very laborious for the user. There is no relevant power-assisted mechanism, and the rotation angle controlled by the hand lever cannot be enlarged at the front fork, and the space for the hand lever to rotate is relatively large, which is not conducive to the use of the patient and the safety during use; the electric rehabilitation wheelchair (patent number 201320895698.9 ), proposed a quasi-four-bar steering mechanism based on the guide electric push rod control. The structure of the mechanism is simple, but it cannot be controlled manually. If the electric cylinder loses power or loses control, it will have an extremely harmful effect on the steering of the wheelchair.

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