| 摘要 |
PROBLEM TO BE SOLVED: To prevent generation of abnormal sound at the time of large displacement of a vibration damper base body in a liquid seal type vibration damper. SOLUTION: An elastic wall 34 comprising rubber-like elastic matter is provided on circumferential edge parts of partition members 28 and 52, the elastic wall is applied to a circumferential edge part of a diaphragm 18, and an orifice passage 26 is formed along its outer circumference. A hard wall 46 is provided at the circumferential edge part of the diaphragm 18 to be disposed on an inner circumference of the elastic wall 34 to prohibit deformation of the elastic wall radially inward. At the time of large displacement of the vibration damper base body 16 in a compression direction, therefore, the elastic wall 34 is not deformed. At the time of large displacement in a tensile direction, the elastic wall 34 is flexure-deformed radially outward to let liquid in an auxiliary liquid chamber 24B leak to the orifice passage 26 for preventing generation of abnormal sound. COPYRIGHT: (C)2004,JPO&NCIPI |
