| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin molding with female screws in which the threads of the female screws with which small-diameter bolts are engaged for miniaturization are prevented from being broken. SOLUTION: The head part 1 of a photoelectric switch including an amplifier has a resin case 3, a pair of metal female screw members 2 which are arranged in parallel on both sides of a window 4 is inserted into the case 3, and the female screw members 2 are formed in the angular corner parts of the head part 1 adjacent to the window 4. In the female screw member 2, the middle part 8 is molded in the shape of a spiral corrugation to constitute the female screw, and both end parts 9 are formed cylindrically.
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