| 摘要 |
PURPOSE: An active type speed sensing apparatus of a vehicle by using a hall device is provided to effectively prevent the damage of the housing by dispersing the impulse force at a predetermined angle. CONSTITUTION: An active type speed sensing apparatus of a vehicle by using a hall device includes a pair of hall devices(200,200'), a permanent magnet(300), a pair of terminals(400,400') and a housing(500). The pair of hall devices(200,200') have a phase for sensing the rotational speed and direction of a rotational body in response to the distance difference generated at a predetermined distance between the transmission of vehicle and the rotational body. The permanent magnet(300) generates a magnetic flux changing in response to the distance difference between the pair of hall devices(200,200') and the rotational body. The pair of terminals(400,400') output the signal sensed by the pair of hall devices(200,200'). And, the housing(500) protects the components. At one side of the housing(500), an interface having a predetermined size is provided for mounting the pair of hall devices(200,200') thereon, and at the other side of the housing(500), an inclined surface cut upward is provided. |
