| 摘要 |
<p>PURPOSE:To reliably support a piston by providing taper pressure surfaces pressed and connected to the inner peripheral surface of a cylindrical boss portion of the inner periphery of a piston and the outer peripheral surface of a hub and cylindrical guide surfaces parallel to an output shaft. CONSTITUTION:A piston 6 has a circular groove on the outer peripheral surface thereof, and the piston is positioned between a damper 5 and an end wall 28. Guide surfaces 35, 36 are provided on a turbine T side portion of the inner peripheral surface of a boss portion 8 and on a turbine T side portion of the outer peripheral surface of a hub 7, and pressure contact surfaces 37, 38 are the taper surfaces parallel to each other. In this arrangement, when the piston 6 is moved in the direction of an arrow F, the pressure contact surface 38 is brought into pressure contact with the pressure contact surface 37, and connected thereto by a frictional force. Therefore, the piston and the damper can be correctly supported in a stable state.</p> |
