| 摘要 |
PURPOSE:To make a hub and a tone wheel separable and replaceable by forming a structure wherein the tone wheel is combined rotatably with a member on the wheel side by a key, and is prevented from moving in the axial direction by an elastic body. CONSTITUTION:A disc rotor 4 is fixed at the large-diameter part 1b of the boss member 1a of a hub 1 by a bolt 5. The small-diameter hole 6b of a tone wheel 6 is fitted from outside on the small-diameter part 1c of the boss member 1a so that a key groove 6d provided in the small-diameter hole 6b is matched with the key groove of the small-diameter part 1c through the intermediary of a key 9. Moreover, an elastic body 10 is fitted between the end surface of the step part of the tone wheel 6 and the ring groove 1e of the hub 1 through the intermediary of a washer 11. According to such a constitution, the hub 1 is pulled out of a knuckle spindle 3, a spring 10 and the washer 11 are taken out to move the tone wheel in the axial direction, and thereby the hub and the tone wheel can be separated from each other. |
