| 摘要 |
PURPOSE: A speedometer of a vehicle is provided to detect easily a variation of magnetic flux by installing a permanent magnet on a particular bolt of plural bolts for combining a differential case with a differential drive gear of a transmission and fixing a hall sensor on a transmission case. CONSTITUTION: A permanent magnet(34) is fixed at a differential portion of a transmission. A hall sensor(16) is installed on a case(36) of the transmission apart from the permanent magnet in order to detect a variation of magnetic flux. The permanent magnet is fixed by a particular bold(32) of plural bolts for combining a differential case(10) with a differential drive gear of the transmission. The permanent magnet is fixed within a loading groove formed at a head portion of the particular bolt. |
