| 摘要 |
PROBLEM TO BE SOLVED: To provide a speed change device improved in performance and service life.SOLUTION: A speed change device of the invention comprises an input shaft, a first transmission member, a speed changing member, and an output shaft. The first transmission member comprises a first transmission shaft, a first inner magnetic part installed in the first transmission shaft, a first sealing lid covering the first transmission shaft, a first mounting case movably covering the first sealing lid, and a first outer magnetic part installed in the first mounting case. The magnetism of the first outer magnetic part is different from the magnetism of the first inner magnetic part. The input shaft is fixed to the first mounting case. The speed changing member is situated at a one side separate from the input shaft in the first transmission shaft and the first sealing lid and is fixed to the first sealing lid. The input shaft interlockingly rotates the first mounting case. While the first outer magnetic part and the first inner magnetic part attract each other, the first mounting case interlockingly rotates the first sealing lid to transmit power to the speed changing member. |
