| 摘要 |
PURPOSE: To always obtain a stable vibration control effect by keeping an optimal initial clearance between a movable member and an electromagnetic actuator constant. CONSTITUTION: A peripheral edge part 11a of a leaf spring 11 is sandwiched between a plate part 23b and a flange part 8A. Herein, a ring-shaped sliding elastic member 24 running along its calking fastening part is interposed between an upper surface (a surface turning to the opposite side of an electromagnetic actuator 10) of the peripheral edge part 11a and the plate part 23b. The sliding elastic member 24 is formed in a circular shape in its cross section, and is housed in a groove 23c which is formed on the under surface side of the plate part 23b and continues in the circumferential direction, and its falling-off is prevented. A radial directional dimension of its leaf spring 11 and a ring member 23 is selected so that a clearance 25 is formed between the outermost peripheral part of the leaf spring 11 and a cylinder body 23a. A width of this clearance 25 is set in a width of a degree capable of sufficiently absorbing its expansion quantity when thermal expansion is caused in the leaf spring 11. |
