| 摘要 |
PROBLEM TO BE SOLVED: To make operation feeling better and prevent break of a hinge by arranging a supporting rib in just under in the displacing direction of a displacement part, and bending the hinge to make the arrangement on the narrow surface of a printed board possible. SOLUTION: A displacement part 1a and a support rib 1c of a push knob 1 are connected together with a hinge 1b, and the support rib 1c is fixed to a printed board with a hole 1d in the support rib 1c. The hinge 1b is bent into an S shape, and when the displacement part 1a is pushed, the hinge 1b is elastically deformed. When the hinge 1b is deformed like this, since the displacement part 1a is supported on the vertical part, of the hinge 1b is deformed any more, and break is prevented. Since the support rib 1c is formed at the back of the displacement part 1a, the push knob 1 can be arranged in the narrow range on the surface of the printed board, the freedom of the arrangement of board accessories is increased, the hinge 1b can be lengthened, and operation feeling is bettered.
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