| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing an eddy current type reduction gear unit which prevents an outside magnet ring and a casing from being deformed. SOLUTION: This eddy current type reduction gear unit 1 includes a casing 5 disposed oppositely to a brake rotor 3 and mounted at a fixed side, an output magnet ring 18 mounted in the casing 5 and having a plurality of magnets 16 disposed at an interval in a circumferential direction, and an inside magnet ring 7 having a plurality of magnets 10 disposed at the inside of the outside magnet ring 18 and disposed at an interval in the circumferential direction. The method for manufacturing the eddy current type reduction gear unit 1 includes the steps of mounting the outside magnet ring 18 in the casing 5; forming a magnetic circuit 21 between the magnet 16 of the outside magnet ring 18 and a ferromagnetic member 20, by mounting the ferromagnetic member 20 on the outer peripheral side of the outside magnet ring 18 prior to the insertion of the inside magnet ring 7 into the inside of the outside magnet ring 18; inserting the inside magnet ring 7 to the inside of the outside magnet ring 18 mounted with the ferromagnetic member 20; and thereafter removing the ferromagnetic member 20 from the outside magnet ring 18. COPYRIGHT: (C)2005,JPO&NCIPI
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