| 摘要 |
PROBLEM TO BE SOLVED: To provide a spherical coupling preventing the exposure of the friction surface of a support part even when a shaft part and the support part relatively swing, and imparting resilient restoring force to return to an original position by an elastic member. SOLUTION: The spherical coupling includes the shaft part 3 having a spherical outer peripheral surface, and the support part 2 supporting the shaft part 3 relatively swingably by the spherical inner peripheral surface abutting on the outer peripheral surface of the shaft part 3. The support part 2 includes, at its inner peripheral end, a seal member 14 abutting on the outer peripheral surface of the shaft part 3; a stopper part 15 provided at an axial outer portion of the shaft part 3 rather than the inner peripheral surface of the support part 2, or at a shaft part 3 portion facing the axial outer portion, to limit the relative swing of the shaft part 3 within a range of the seal member 14 not deviating from the spherical outer peripheral surface of the shaft part 3; and the elastic member 17 provided adjoining the stopper part 15 and abutting on the shaft part 3. COPYRIGHT: (C)2011,JPO&INPIT
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