| 摘要 |
PROBLEM TO BE SOLVED: To provide a bound stopper having an improved novel structure for effectively inhibiting crack from easily occurring particularly near a fitting groove in which a restriction ring is assembled, to enhance the durability.SOLUTION: In a bound stopper 10, an expansive deformation part 24 is provided which extends in a bellows shape out of a stopper body 14 at its section where a fitting groove 20 is formed toward the axial direction. During the compressive deformation in the axial direction, the expansive deformation part 24 is made to abut on an axial end face 56 of a restriction ring 16. The axial end face 56 of the restriction ring 16 is formed as an inclined abutting face which is protruded from the fitting groove 20 and inclined toward the extending-out direction of the expansive deformation part 24 in the axial direction. On the inclined abutting face at its position on the further outer periphery side than the abutment position of a bellows-shaped crest part 44 located closest to the restriction ring 16 in the axial direction during the compressive deformation in the axial direction, a bellows-shaped crest part 48 located farther from the restriction ring 16 in the axial direction is made to abut. |
