2 step fast wheels assembly for quick removal and re-installation possibility, manual wheelchair

摘要

Being the wheel assembly for the wheelchair which possesses 2 step fast gear arrangements, the hypocycloid gear 1 to offers the gear ratio which is lower than 1. The shift component (38), it is located on this wheel assembly, the manual operation shift part (70 and 72) possesses, it is possible to move perpendicularly to the wheel axis while two positions. This shift component can move the user while the stability and the wheelchair are not moving into the wheelchair. This wheel assembly includes the gear assembly (22) the housing which is in (18) the hand rim which is connected (14). This gear assembly includes the cage board which 2 alienate (86,88), those are connected the unidirectional roller which is located around around that cage board (92,92) the fixed shaft which it possesses on that (92A-92A) with. This roller has the external part, the inside of the housing engages the said external part and tries to be able to move to the front easily, but, although the housing it turns in regard to the gear assembly if the hand rim is not used, it has reached the point where the movement to the rear is prevented. The cage board the inside of the housing has the frictional element which operates mutually, makes addition damping force cause to the one for downhill topography.