| 摘要 |
PROBLEM TO BE SOLVED: To provide a throttle opening degree detecting apparatus which can accurately fix a permanent magnet within a resin gear by a less number of man-hour for work so as to accurately detect the throttle opening degree. SOLUTION: The throttle opening degree detecting apparatus is structured such that the resin gear 9 is connected to a throttle shaft 4 of a throttle valve 3, a permanent magnet is mounted to a part of the resin gear 9, and an opening degree of the throttle valve 3 is detected by detecting a rotation angle of the resin gear 9 on the basis of an output signal from a magnetic sensor 22 arranged in a fixed side so as to oppose to the permanent magnet in a non-contact manner. A depressed boss portion 9b is formed in a position of an axis of the resin gear 9, a yoke 20 and the permanent magnet 21 are mounted along an inner peripheral surface of the boss portion 9b, and the resin gear 9 is insert molded by a synthetic resin by inserting the yoke 20 and the permanent magnet 21. COPYRIGHT: (C)2004,JPO
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