| 摘要 |
<p>A steering apparatus of the present invention includes a fixed bracket (1), a fastener (3), a primary cam (A) that rotates with a rotation operation of the fastener, and a secondary cam (B) that is non-rotatably attached to a fixed side portion and is in contact with the primary cam. Cam operating portions each including an inclined surface portion (51,71), a high level surface (52,72), and a contact protrusion are formed at regular intervals along a circumferential direction on a base flat surface of each of the primary cam and the secondary cam, and the inclined surface portion is constituted by a low gradually inclined surface (51a, 71a), a middle sharply inclined surface (51b, 71b), and a high gradually inclined surface (52,72) arranged in this order from the base flat surface toward the high level surface. With the arrangement, operability of an operating lever in locking and unlocking is improved.</p> |
