| 摘要 |
PURPOSE: A speedometer assembly for use in a vehicle is provided, which is easily assembled by configuring its structure simple and to prevent the electrical disturbance and removing the mechanical friction and spacing the permanent magnet from the wiring at a sufficient distance. CONSTITUTION: A speedometer assembly for use in a vehicle includes a magnetic material(14a), a wiring(16), a filter(18) and a speedometer(20). The magnetic material(14a) is connected to the output axis of the manual transmission. The induced current induced by the changes of the magnetic field during the rotation of the magnetic material(14a) is flowing into the wiring(16), wherein the change of the magnetic field is obtained by forming the loop with encompassing the magnetic material(14a). The filter(18) is connected to the one side of the wiring(16) for removing the invalid waveform of the induced current. And, the speedometer(20) is mounted on the room of the vehicle for displaying the speed of the vehicle. |
