Centrifugal-force-based speed limiting device for electrorheological fluid type wheelchair

Abstract

The invention discloses a centrifugal-force-based speed limiting device for an electrorheological fluid type wheelchair, and relates to the technical field of old-age care equipment. The device comprises a rotary disc, wherein uniformly distributed resistors are fixedly connected to the inner wall of the rotary disc, a negative plate electrically connected with the resistors is fixedly connected to the inner wall of the rotary disc, a positive plate symmetrical to the negative plate is fixedly connected to the inner wall of the rotary disc, and uniformly distributed electromagnets are fixedlyconnected to the inner wall of the rotary disc. According to the centrifugal-force-based speed limiting device for the electrorheological fluid type wheelchair, through cooperative use of a rubber film and a clamping groove, when the wheelchair exceeds the limited speed, a piston block can move to the outer side under the action of a centrifugal force, and electrorheological fluid in a U-shaped groove is extruded to the inner side through the piston block at the moment, so that the rubber film expands, the rubber film is attached to the clamping groove, and finally, the electrorheological fluid is changed into a solid state, the friction force between the rubber film and the clamping groove is effectively increased, the speed of the wheelchair is effectively reduced, and therefore the effect of preventing the wheelchair from stalling is achieved, the safety of old people is guaranteed, and the application range of the wheelchair is widened.

Description

technical field [0001] The invention relates to the technical field of elderly care equipment, in particular to an electrorheological fluid wheelchair speed limiting device based on centrifugal force. Background technique [0002] Ordinary wheelchairs are generally composed of a foldable frame, front and rear wheels, left and right knee pads and foot pedals, left and right detachable armrests, handle brakes, seats, backrests with medical imaging data bags, bedpans, urine bag hooks, electric standing, etc. On the basis of ordinary wheelchairs, hand-operated wheelchairs are equipped with hand-operated devices. Electric wheelchairs are based on ordinary wheelchairs, and an electronic power-assisted system is added to reduce the physical exertion of users. Smart wheelchairs are based on electric wheelchairs. Mobile, remote mobile and related Internet + assisted living. [0003] The current wheelchairs can greatly facilitate the life of the elderly, and provide convenient travel...

AI Technical Summary

Problems solved by technology

[0003] The current wheelchairs can greatly facilitate the life of the elderly, and provide convenient travel opportunities for the elderly with limited mobility. The elderly use wheelchairs to travel, which can effectively save energy, and the wheelchair can increase the time for going out, which is helpful for the elderly. Physical and mental health, but in the process of using the current wheelchair, it is often found that there are some problems. For example, when the elderly use the wheelchair to walk alone, if they encounter a downhill, the speed of the wheelchair is difficult to control, and the strength of the elderly is weak , At this time, the speed of the wheelchair will be out of control, resulting in excessive speed of the wheelchair, which will easily injure the elderly, thereby reducing the practicality of the wheelchair and limiting the scope of use of the wheelchair

Images