| 摘要 |
An abutment member 4 of a first hinge member A 1 is pressed against a cam member 8 of a second hinge member A 2 by a coiled spring 6. By this, an interval between an enlarged diameter portion 31 of an insertion member 3 of the first hinge member A 1 and a connecting plate portion 72 of the second hinge member A 2, is restricted to a predetermined interval. In other words, an interval between the end faces 31 a , 72 a of the enlarged diameter portion 31 and the connecting plate portion 72 is restricted to a predetermined interval. A friction member 10 composed of an elastic material such as a rubber is disposed between the end faces 31 a , 72 a. The thickness of the friction member 10 in the opposing direction of the end faces 31 a , 72 a is larger than the interval between the end faces 31 a , 72 a.
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