VALVE CORE POSITION CONTROLLING DEVICE

摘要

A valve core position controlling device for controlling the valve core to move between a first position and a second position, includes a driving cam (3) driven by a motor (1) to output a pre-determined angle rotation, a first switch controlling assembly (5) and a second switch controlling assembly (6), the driving cam (3) is provided with a controlling profile (30) with at least one recess (31a), the first switch controlling assembly (5) includes a first returning frame (53) which can pivot about a pivot (530) and has a force receiving side (531) and a pressing side (532), a first sliding block (51) is provided at the force receiving side (531) and pushes against the controlling profile (30) of the driving cam (3) to provide a returning force for the first returning frame (53), a first metal contacting plate (54) is provided at the pressing side (532) and acts as the first returning frame (53) pivots, so as to contact with or separate from a first electricity conducting plate (55), and to select the circuit between a power source and a power input end of the motor (1). The second switch controlling assembly (6) is the same as the first switch controlling assembly (5).