| 摘要 |
PROBLEM TO BE SOLVED: To enhance the performance of a coreless motor without altering the space occupied by the motor in equipment mounted with the motor. SOLUTION: A pair of magnets 20 and 22 are additionally installed on the outer circumference side of the cylindrical housing 11 of a coreless motor 10. A pair of the magnets 20 and 22 are placed on the outer circumferential surface of the housing in positions opposite to the north pole and south pole of the cylindrical magnet in the coreless motor 10. The magnets 20 and 22 are formed in such a shape that the housing 11 is inscribed, and two of the four corners in the shape of rectangular cylinder whose diagonal lines are positioned in the direction of the magnetic poles of the cylindrical magnet are filled. In cooperation with the cylindrical magnets, a pair of the magnets 20 and 22 increase the magnetic flux in cooperation with the cylindrical magnet inside the housing 11, and thereby contribute to increase in the torque of the motor. This coreless motor 10 is fixed on the mounting frame 42 of the enclosure 40 of equipment through a rubber holder 30. However, the space in equipment occupied by the motor when mounted does not differ from that by conventional cylindrical coreless motors. COPYRIGHT: (C)2004,JPO&NCIPI
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