| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve durability of a viscous lubricant such as grease between a slip ring and a contact member to a possible maximum level. SOLUTION: Grooves (guide parts) 17 are formed in a spiral shape of the winding number equivalent to the total rotating speed of a steering wheel on a slip ring 16 to integrally rotate with a steering wheel, and a contact point part 22a of a contact member 22 is relatively and slidingly contacted with the slip ring 16 along its grooves 17. Therefore, the contact point 22a of the contact member 22 relatively moves not only in the peripheral direction of the slip ring 16 but also in the radial direction, and slidingly contacts the slip ring 16, and therefore, not only grease on the same line of the slip ring 16 but also the other grease contribute to lubrication between these slip ring 16 and contact member 22.</p> |
