Wheelchair lift mechanisms and wheelchairs incorporating such mechanisms

Abstract

The invention discloses a wheel chair rising and sitting mechanism which is arranged on an electric wheel chair, wherein the electric wheel chair is provided with a vehicle frame, a driving wheel, a driving motor, a universal wheel and a seat. The rising and sitting mechanism comprises a driving mechanism and a transmission mechanism, wherein the driving mechanism is arranged below the seat and drives the seat to lift and move back and forth. The driving mechanism is a linear moving mechanism. By arranging the transmission mechanism to be hinged and fixed with the seat, the transmission mechanism can swing circumferentially with one end, hinged and fixed with the vehicle frame, of the transmission mechanism, as the center under the drive of the driving mechanism. In the process of swinging, the transmission mechanism gradually conveys the seat forwards and upwards, rising and sitting processes are stable, center of gravity of the human body is continuously changed, and a user is boosted to stand up step by step; and vice versa. The wheel chair rising and sitting mechanism and the wheel chair comprising the wheel chair rising and sitting mechanism can help the user to rise and sit voluntarily for exercising, rising and sitting difficulties for the use are reduced, and the electric wheel chair is humanized. In addition, telescopic quantity of the driving mechanism can be adjusted as required by the user, swing amplitude of the transmission mechanism can be adjusted, and the rising and sitting mechanism is simple in structure, convenient to install and use, and low in cost.

Description

technical field [0001] The invention belongs to the technical field of electric wheelchairs, and in particular relates to a wheelchair sitting mechanism and a wheelchair including the mechanism. Background technique [0002] With the aging of China's population, there are more and more elderly people with limited mobility. Most elderly people have not completely lost the ability to walk and can walk for a short time, but it is difficult for them to get up from a wheelchair to stand. At present, the development of electric wheelchairs has been relatively mature, and the elderly can use wheelchairs instead of feet to achieve the purpose of walking. However, most electric walking wheelchairs do not have the function of assisting sitting up, which makes it difficult for the elderly to get up and sit up when they want to walk independently from the wheelchair. [0003] At present, the relevant patents at home and abroad mainly include the invention with the patent name "Electri...

AI Technical Summary

Problems solved by technology

However, most electric walking wheelchairs do not have the function of assisting sitting up, which makes it difficult for the elderly to get up and sit up when they want to walk independently from the wheelchair.

[0003] At present, the relevant patents at home and abroad mainly include the invention with the patent name "Electric Wheelchair with Liftable Seat" (patent application number 03246351.0). The center of gravity of the human body is also constantly changing during the process, and the center of gravity of the seat in this patent mainly changes in the vertical direction, and there is no movement in the horizontal direction. reach a standing position

[0004] Moreover, when this patent is in use, the lifting mechanism drives the seat to move upwards, and the human body also moves upwards accordingly. If the user does not stretch out the feet in time to touch the ground, there will be problems such as the user's feet being separated from the ground. The difficulty caused by the user standing

[0005] In addition, another patent "electric mobility wheelchair with a sitting mechanism (patent number: 201010148940.7)" can only drive the seat up unilaterally, but cannot drive the seat down

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