| 摘要 |
<p>PURPOSE:To miniaturize a driving transmission mechanism and to simplify the structure by providing a position detecting mobile object of the driving trasmission mechanism with a magnetized part magnetized with a prescribed pattern and a magnetic sensor and detecting the position of the mobile object in accordance with the output signal which is obtained through the magnetic flux from the magnetized part by the magnetic sensor. CONSTITUTION:When a signal is outputted from a system controller 50, a motor 2 is driven and gears 4 and 6 are rotated. A rotary body 12 is rotated arround a shaft 11 as the center attending on rotation of the gear 6, and magnetized parts 13 and 14 magnetized with a prescribed pattern of the rotary body 12 successively pass on a Hall element 15, and therefore, magnetic fluxes from magnetized parts pass on the Hall element 15 and a voltage VH is outputted from the Hall element 15. The output signal from the Hall element 15 is inputted to the system controller 50, and the position is detected by the system controller 50. Thus, the thickness of the sensor itself is reduced and the detection distance is shortened, therefore, a driving transmission device is miniaturized and the structure is simplified.</p> |
