| 摘要 |
PURPOSE:To completely require no wiring operation of an optical fiber, a cord or the like by mutually opposing a first printed board on which a photointerrupter is attached and a second printed board on which an electric circuit for processing a detecting signal from the photointerrupter is formed and connecting by a pin. CONSTITUTION:The first and the second printed boards 41, 46 formed respectively to the long size are electrically and mechanically connected by the pin 48, the many photointerrupters 42 are disposed in parallel on the first printed board 41 correspondingly to a respective action mechanisms and the electric circuit for processing electrically the detecting signal from the respective photointerrupters 42 is formed on the second printed board 46. Thereby, the cord, the optical fiber and the wiring operation thereof are not required to remarkably make an assembling operation easy, considerably reduce a production cost and improve a productivity. |
