| 摘要 |
PROBLEM TO BE SOLVED: To provide a passing pachinko ball detection switch free from erroneous detection caused by mechanical vibration. SOLUTION: The arm part 20a of a first contact point 20 faces the rear part of a pressurizing member 18 disposed movably back and forth at a main body 16. At the rear part of the arm part 20a of the first contact point 20, the contact arm 24a of a second contact point 24 is parallelly arranged. Between the arm part 20a of the first contact point 20 and the contact arm 24a of the second contact point 24, an intermediate contact point 22 for bringing both contact points 20 and 24 into mechanical contact and electrically conducting them is disposed. The first contact point 20, the intermediate contact point 22 and the second contact point 24 are usually held in the state where mechanical contact is released. Then, when the pressurizing member 18 is pressurized by a pachinko ball 28, the first contact point 20 and the second contact point 24 are brought into mechanical contact through the intermediate contact point 22 by the backward movement of the pressurizing member 18.
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