| 摘要 |
PURPOSE:To improve the characteristic of cutting off the vibration whose frequency is over 50Hz by fixing a shielding member to the lower end part of a fitting member, making the diameter of the shielding member smaller than the external diameter of the inwall of a resilient member which faces to the inside of a fluid chamber, and forming a narrow space part between the intermediate part of the inwall and the external peripheral part of the shielding member. CONSTITUTION:A disk-like shielding member 20 is tightened with a rivet 29 to the lower end part 11 of a fitting member 10 which is projected to the ceiling part inside a fluid chamber 18. The external diameter of the shielding member 20 is made shorter than that of the inwall 9 of the resilient member 17 which faces to the fluid chamber 18. And a narrow space part 30 is annularly formed between the external peripheral part 21 of the shielding member 20 and the intermediate part of the inwall 9 of the resilient member 7. The liquid is therefore able to resonate at a high frequency over 50Hz so that the characteristic of cutting off vibration within the frequency range over 50Hz may be improved. |
