Wheel, lock device equipped with the wheel, and door body fall prevention device provided with the lock device

摘要

Problem to be solved: to provide a wheel having a strength capable of withstanding the impact when the lock member is locked in the retaining portion in a wheel connecting the boss which can receive the shaft and the plate element having an engaging portion on the outer periphery and having an opening for receiving the boss.Boss 90 can accept the shaftProvided with one or more locking portions on the outer peripheryThe plate element 91 having an opening to receive the boss 90 andA wheel 9 comprisingThe inner peripheral surface 900 of the boss 90 and the inner peripheral surface 913 of the opening of the plate elementBoss 90 can be inserted into the opening.In the insertion stateIt has a shape capable of transmitting force in the circumferential direction.In the insertion stateThe first corner of the boss 90 and the first corner 91A formed on the first surface 91A of the plate elementAt least a portion of the second corner formed by the outer surface 900 of the boss 90 and the second surface 91b of the plate element 91 is welded.Selection diagram