| 摘要 |
This torque limiting clutch has a motor driven hub carrying two concentric cup-shaped rings with a cylindrical permanent magnet therebetween. Keeper plates are pivotally secured to the hub and overlay coplanar edges of the rings to which the keepers are magnetically attracted. The hub has an extension on which freely rotates a power output disk provided with projecting fingers that engage the keepers when they are in radial positions with respect to the hub. When an overload is applied to the output disk, the fingers turn the keepers until they are disengaged from the disk. The power output disk and hub are thus released to turn freely independently of each other, without generating frictional heat therebetween.
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