| 摘要 |
PURPOSE:To facilitate the work of assembly by providing a pair of bearings against a shaft, and providing a plate spring having a cutout portion between protruding portions confronting these bearings, and inserting the plate spring into a space between the inner circle of the bearings and the shaft. CONSTITUTION:A pair of bearings 3a, 3b are provided against a shaft 1, and a plate spring 4 is provided between the bearings 3a, 3b and the cut surface of the shaft 1. The plate spring 4, in order to press pushingly the bearings 3a, 3b, has a cutout portion 42 in the center portion, and semi-circular protruding portions 40, 41 are formed upward and downward, and the force of pressing pushingly is effected independently. Also, circular arc portions 44a, 44b, 44c, 44d are formed at protruding portions 40, 41, and likewise, circular arc portions 43a, 43b, 43c, 43d are formed at both side corners butting the shaft 1, and no entanglement with bearings 3a, 3b and the shaft 1 at the time of the attachment/ detachment of the plate spring 4 is arranged. Thus, giving pre-pressure can be done by such a simple work as the insertion of the plate spring 4. |
