| 摘要 |
PROBLEM TO BE SOLVED: To suppress a change in the interval between a detector and a section to be detected caused by thermal influence and the difference of the thermal coefficient of expansion between the detector and its mounted section, and the section to be detected. SOLUTION: A rotational angle detector 100 of a rotating shaft includes: a sensor plate 5; a position sensor 10; and first and second lubricant injection nozzles 9a, 9b. The sensor plate 5 is mounted to a crank shaft 4, and a plurality of gear teeth 5G are provided at the outer-periphery section. The position sensor 10 is a magnetic sensor, and counts the number of the gear teeth 5G formed at the outer-periphery section of the sensor plate 5 without any contact. Lubricant L is injected toward the position sensor 10 and its mounted section from the first lubricant injection nozzle 9a. The lubricant L is injected toward the sensor plate 5 from the second lubricant injection nozzle 9b. COPYRIGHT: (C)2007,JPO&INPIT
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