| 摘要 |
PROBLEM TO BE SOLVED: To prevent a cylindrical member made of elastomer from displacing in a circumferential direction and an axial direction by arranging a non-end ring which is formed on the inner circumferential surface of a shaft material inserting hole and which is formed of a material having substantially poor expanding performance on the outer peripheral side of a small diameter part whose diameter size is smaller than the outer diameter of an shaft material. SOLUTION: A dynamic bumper 1 is mounted on the intermediate part of a driving shaft by press-in. The inner diameter size of the inner circumference 3a of a sleeve 3, namely, the inner diameter size D1 of the penetrating hole of the driving shaft is equalized with the outer diameter size of the driving shaft. In the part of a projection 6, a small diameter part which the inner diameter D2 of the part of the projecting 6 is formed smaller than the outer diameter size of the driving shaft is formed. When the dynamic bumper 1 is mounted on the driving shaft, the thickness (a part of the thickness shown by a t size) of the inner circumferential side of a non-end ring 7 including the projection 6 is compressed, and fastening force fastened by a band is acted on the driving shaft. It is thus possible to fix the dynamic bumper 1 disenably to move in axial direction and a circumferential direction of the driving shaft. |
