FRICTION COUPLING Russian patent published in 2007 - IPC A61G5/02 A61G5/10 F16D19/00 F16D23/00 F16D13/70 

FIELD: ferrules.

SUBSTANCE: friction coupling can be used in motion drive of invalid wheelchair; it is mounted onto axis of drive wheel. Friction coupling has driving and driven half-coupling provided with clutch plates; moment of rotation transmission lever system, pushers cinematically connected with gravitation member, coupling sectors and lever elbow-rest. Pusher is made in form of roller nest provided with ball sitting movable in it. Pusher is mounted for axial movement in opening of case of drive half-coupling and for interaction onto coupling labyrinth in combination with coupling sectors. Coupling labyrinth is mounted onto whiskers of yokes, which are tightly attached to rod of arm of elbow-rest for adjustment of tension of walls of coupling labyrinth. Arms of levers of front and back drives of movement of wheel chair, onto one of which the gravitation member sits, are connected by hinge unit and are mounted in such a manner that surfaces of their rods make direct contact with ball of ball nest.

EFFECT: widened functional abilities of coupling; improved reliability; higher quality of coupling.

2 cl, 5 dwg