| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing plate capable of preventing looseness of a bolt fixing an actuator in a housing, and an actuator for driving a variable valve mechanism of an internal combustion engine using the bearing plate.SOLUTION: In the bearing plate 14, a stress transmission relaxation portion 36 is formed in a phase area of a bolt fastening part 32 and a phase area adjacent to both sides thereof. The stress transmission relaxation portion 36 is an inner edge of a ring-shaped body plate 30 which is retracted to the radial outside. Accordingly, the phase area is not in abutment with an outer ring of the bearing, and does not receive reaction of bolt fastening. Further, due to low rigidity, transmission of stress caused by rising of a claw 34 to the bolt fastening part 32 can be relaxed. Accordingly, the ring-shaped body plate 30 at the position of the bolt fastening part 32 can be put into tight contact with the housing side, deformation of the bearing plate 14 at that portion can be thus prevented, the bolt fastening force is not reduced, and looseness of the bolt can be prevented. |
