| 摘要 |
PURPOSE:To provide a low-cost detector for the direction of a motor, by using a cam mechanism that rotates in accordance with the rotation of the motor, and detecting the rotation of the motor through the on-off operation of two switches that function with the cam mechanism. CONSTITUTION:When an up-and-down movement motor is driven to rotate a light body 44 upward, a clutch shaft rotates clockwise. A wing part 77 of an upper-position detecting microswitch 76U is pushed by the top of a pushing member 73, and then the microswitch 76U is turned on so that the state is detected that the light body 44 is rotated in an upper position. When the up-and- down movement motor is driven to rotate the the light body 44 downward, the clutch shaft rotates counterclockwise and a pushing member 77 is pushed by the base of the pushing member 73 of the microswitch 76D. Then, the microswitch 76D is turned on so that the state is detected that the light body 44 is rotated in a lower position. |
