| 摘要 |
A joint pin 40 extending in an axial direction of an inner cylinder 32 is provided on the inside in a radial direction of the inner cylinder 32, a projecting portion 42 projecting outward in a radial direction of the joint pin 40 is provided to the joint pin 40, shoulder portions 42a are provided on both sides in an axial direction, a bearing 50 guiding a relative rotation of the joint pin 40 with respect to the inner cylinder 32 is provided between the inner cylinder 32 and the projecting portion 42, bent portions 33 bent inward in the radial direction of the inner cylinder 32 are provided on both sides of the inner cylinder 32 in the axial direction, and elastic members 60 are incorporated between the bent portions 33 and the shoulder portions 42a.
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