| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mechanism capable of detecting the rotations per unit time of a motor surely while enhancing the cooling capacity for the motor by providing a bearing sensor on the outside of an end bracket thereby fixing the end bracket conveniently to the motor and making the motor compact. <P>SOLUTION: In the mechanism 10 for detecting the rotations per unit time of a motor 12 provided with the end bracket 19 and the bearing sensor 30, a bearing part 31 consists of an inner ring 31a rotating integrally with a motor shaft 27, an outer ring 31b fixed with a sensor section 32, and a rolling element 31c held between wheels 31a and 31b. The outer ring 31b is fitted in a recess 20 made in the outer side face of the end bracket 19 such that the sensor section 32 is directed outward and a means for preventing dragging is provided for the outer ring 31b. <P>COPYRIGHT: (C)2004,JPO |
