| 摘要 |
<p>The present invention provides a lever clutch/brake, which includes a driving and driven part, an operating device which controls the engaging or disengaging of the clutch/brake, a controller and a pushing part join with driving part respectively, a lever block which is positioned between and bearing two surfaces (A, B) of which back on said controller and driven part, and one of said surfaces (C, third bearing surface) back on said pushing part. Said surfaces A and B are curved surfaces. After having engaged the clutch/brake, one of said third surfaces and instant center O1 (or contact point A') of said surface A locate at first or fourth quadrant of a system of rectangular coordinates and another locates at second and third quadrant of said system, here the base point of the system is the instant center or the contact point of said surface B.</p> |
