| 摘要 |
PROBLEM TO BE SOLVED: To improve durability and reliability of a constant velocity universal joint by prolonging a period of durability of a seal member to improve workability when performing maintenance and inspection. SOLUTION: This driving force transmission device is constituted by detachably providing a universal shaft joint capable of transmitting rotation force between two shafts even if a crossing angle of two shafts is changed and arranging the seal member for sealing between the universal shaft joint and at least the shaft on one side. The seal member 60 is composed of a convex spherical face member 61 provided on a shaft side on one side of the universal shaft joint 40 and forming a convex spherical face 61a at the outer periphry partially, a concave spherical face member 62 provided on the shaft side on one side of the universal shaft joint 40 and forming a concave spherical face 62b at the inner periphery partially, and an intermediate member 63 provided on a shaft side on the other side of the universal shaft joint 40 to extend between the convex spherical face member 61 and the concave spherical face member 62, forming a concave spherical face 63b in contact with the convex spherical face 61a of the convex spherical face member 61 at the inner periphery partially, and forming a convex spherical face 63a in contact with the concave spherical face 62b of the concave spherical face member 62 at the outer periphery partially. COPYRIGHT: (C)2006,JPO&NCIPI
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