| 摘要 |
A lock for maintaining the pivotal connection between two parts of a pressure-distributing superstructure in a windshield wiper blade assembly in which the pivotal connection is effected by providing a pair of outwardly projecting lugs on the resilient side walls of one of the parts which nest in a pair of aligned openings in the U-shaped end portion of the other of the parts. The parts are assembled by deflecting the side walls of the one part inwardly into an open space in the one part to permit the U-shaped end portions of the other part to be fitted over the lugs. Thereafter, the resiliency of the side walls urges the lugs outwardly into the openings to pivotally connect the two parts. In order to prevent disconnection of the two parts, the lock is inserted into the open space to prevent the side walls of the one part from collapsing into the open space. The lock has enlarged portions to retain the lock within the open space which has been adapted to receive the lock. The enlarged portions of the lock have been formed to provide camming surfaces which facilitate insertion and removal of the lock into and from the open space. The lock is also pivotally connected within the open space to permit the lock to swing between an operative position preventing disconnection of the two parts and an inoperative position permitting disconnection of the two parts. |
