Small motor esp. for vehicle windscreen wiper - has worm gear and cap bearing, with axial movement of armature shaft taken up by bearing rings having radial clearance within bore

摘要

The end (2) of the shaft remote from the armature protrudes beyond the worm gear (1) into a cap bearing (3) installed in the motor housing (9) with radial clearance. The bearing consists of a pierced spherical cap with two bearing rings (5,6) whose outer diagram is less by that amount than the diagram of the bore (8). The further ring (5) abuts against a collar (10) maintained in position by a tensioning screw (12) in a threaded bore (13), with a screwdriver slot (14) in its end. ADVANTAGE - Unit is easily assembled and dismantled.