| 摘要 |
PURPOSE: A speed sensor is provided to simplify a construction by integrating a magnet, a rotor and a joint, and to reduce cause of badness by supporting the rotor by a joint connection part of a driving gear shaft. CONSTITUTION: A housing(4b) consists of a lower hollowness, a circuit mounting portion, and a connector connection hole. A rotor(1b) is provided in the lower hollowness, and the circuit mounting portion are formed at a circumference of the housing. A PCB substrate on which a magnetic sensor(3b) is attached is attached to the housing so as to be connected with a tap. A rotor assembly is connected to the center of a rotor formed by extruding a ring magnet. The rotor assembly is formed by inserting a spring(15) and a ball bearing(11). |
