| 摘要 |
PROBLEM TO BE SOLVED: To suppress as much as possible an inconvenience that the spring characteristic in a separate stopper is changed, in its turn, the stopper characteristic is changed even in a case where the separate stopper is twist-deformed. SOLUTION: A stopper 4 comprising a ring-like rubber elastic body which is interposed in an axially compressed condition in a clearance between a first fitting member 5 to which an outer cylinder is fixed and a second fitting member 7 to which an inner cylinder 2 is fixed, and regulates the relative displacement in the axial direction is provided with a main stopper part 42 to demonstrate the substantial stopper function. In the main stopper part 42, both end parts in the axial direction are formed arc-like in the sectional shape in the axial direction, and the ratio (h/d) of the axial length (h) to the width (d) in the radial direction is set in a range of 1-1.5. The main stopper part 42 whose sectional shape in the axial direction is specified is small in the change of the compression, and thus small in the stopper characteristic even when an upper side is twist-deformed so as to be fallen in the inner circumferential side. |
