| 摘要 |
<p>PURPOSE:To easily change brake torque with braking time and releasing time fixed substantially in a wide range by providing a fixed plate and a movable plate, at least one of which has different coefficients of friction at the surface and the back thereof. CONSTITUTION:A movable plate 5 and a fixed plate 8 are opposite to a friction disc 11 fixed to a motor shaft. The surfaces 5a, 8a and the backs 5b, 8b of the plates 5, 8 have different coefficients of friction. Accordingly, the movable plate 5 and the fixed plate 8 are constituted to have the opposite surfaces to the friction plate 11 different in coefficient of friction, so that different brake torque can be easily obtained.</p> |
