| 摘要 |
PURPOSE:To improve a vibration isolation performance by eliminating the defective insertion of a damper pin into the vibration proof damper of an on- vehicle compact disk player. CONSTITUTION:Spline shaped or almost spiral shaped grooves 10 and 11 are provided on the outer peripheral surface of a dumper pin 2 inserted into a dumper 1. Also, spline shaped or almost spiral shaped grooves 12 and 13 are provided on the inner peripheral surface of the hole section 15 of the dumper 1 into which the dumper pin 2 is inserted. When the dumper pin is inserted into the dumper, air staying in the hole section of the dumper is released outside and thus, the dumper pin is completely inserted and the expected vibration isolation performance is attained. |
