| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-contact load-sensing type automatic transmission enabling the stable operation, a reduction in size, and an easy increase in the number of stages. SOLUTION: A first yoke 12 and a second yoke 13 are fixed on both sides of a first permanent magnet 11 through a clearance 16, and a third yoke 20 is disposed through the clearance. A second permanent magnet 25 on the inner peripheral surface of a cylindrical magnet fixing member 49 is detachably disposed in the space 16 between the yokes. When the second permanent magnet 25 is inserted into the clearance 16, the magnetic circuit of the first permanent magnet 11 is passed through the second permanent magnet 25 side and the third yoke 20 is brought into a free state. When the second permanent magnet 25 is released from the clearance 16, the magnetic circuit of the first permanent magnet is passed through the third yoke 20, and both permanent magnets are magnetically joined to each other. The magnetic clutches 10 are disposed in three rows parallel with each other, and the third yoke in each row is fixed to the internal gear outer peripheral surface of a planetary gear installed at the center thereof. The internal gear in any row is fixed by the magnetic clutch, and an output shaft 75 is driven at the deceleration of the operating planetary gear. According to a load, a spring 44 is extended/retracted to select the magnetic clutch in operation. COPYRIGHT: (C)2006,JPO&NCIPI
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