| 摘要 |
PROBLEM TO BE SOLVED: To provide a torque limiter with an inexpensive structure, which provides stable and large load torque regardless of its small size, is easily assembled, and has fewer part items. SOLUTION: The magnetic torque limiter includes: a center shaft member which has a cylindrical surface; and a cylindrical permanent magnet having an inside diameter larger than the outside diameter of the center shaft member and arranged concentrically with the center shaft member, and is also provided with a short cylindrical hysteresis member which has: a center hole having a diameter smaller than the outside diameter of the cylindrical surface of the center shaft member; and a pair of annular planes extending vertically with respect to the center shaft member, and which is rotated together with the center shaft member with an inner peripheral part in the vicinity of the center hole buried into the center shaft member. The permanent magnet is arranged at a predetermined minute distance with respect to one or both surfaces of the annular planes of the hysteresis member. COPYRIGHT: (C)2008,JPO&INPIT
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