Module to control a rotating output shaft and module to change a driving condition of vehicle
View Patent ↗A sensor and a control circuit are provided externally of a gear cover. This enhances reliability of a shift controller operated by an electric actuator and a motor driven control module similar thereto, and constitute them compact. Further, this provides a rotating position detection sensor suitably used for a switching device as described. A circuit and a sensor are not contaminated with oil or metal powder of a gear mechanism portion.
1. A non-contact type rotation sensor for detecting a rotating position of a rotating shaft comprising:
a cover member made of resin for covering an end of said rotating shaft,
a magnet mounted on the end of said rotating shaft,
a heat sink externally mounted on said cover member,
a circuit board mounted on said heat sink,
a magnetic sensor element mounted on said circuit board at a position facing said magnet, and
a control circuit on said circuit board for processing an output signal from the magnetic sensor element.
2. The non-contact type rotational sensor for detecting a rotating position of a rotating shaft according to claim 1 , further comprising
a nonvolatile memory mounted on said circuit board for storing a constant obtained by calculation with said control circuit.
3. The non-contact type rotation sensor for detecting a rotating position of a rotating shaft according to claim 2 ,
wherein said nonvolatile memory is an EEPROM.
4. The non-contact type rotational sensor for detecting a rotating position of a rotating shaft according to claim 1 ,
wherein said heat sink is arranged between said board and said cover member.
5. The non-contact type rotational sensor for detecting a rotating position of a rotating shaft according to claim 4 ,
wherein said heat sink is nonmagnetic steel.
6. The non-contact type rotational sensor for detecting a rotating position of a rotating shaft according to claim 1 ,
wherein said magnetic sensor element is a GMR element.