| 摘要 |
PURPOSE: A universal joint unit of a steering device is provided to increase power transfer performance due to the engagement increase of a serration engaging part as a yoke pinch leads to deformation to form a uniform radial fastening force. CONSTITUTION: A universal joint unit of a steering device comprises a coupling yoke pinch, a fastening yoke pinch(6), yoke connecting parts(7), and a yoke body(8). The coupling yoke pinch is connected to a shaft, which is rotated by the torque of a universal joint unit. The fastening yoke pinch is coupled to receive the torque from the coupling yoke pinch. The yoke connecting part is coupled to the coupling yoke pinch. The yoke connecting parts are formed to face each other. The yoke body comprises a penetration hole, in which a serration(8a) is formed.
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