| 摘要 |
PURPOSE: An electric interface is provided to prevent the damage of the connected portion between a separable electric interface and a fixed electric interface. CONSTITUTION: A silicon O-shaped ring(22) is fixed in a thread groove of a female screw. A metal wire ring(23) is integrally fixed on the silicon O-shaped ring. A protruded sill and a wire ring fixing groove(42) are formed in a thread groove of a male screw behind a fixing coupling(40). Thereby, the damage of the connected portion in an electric interface is prevented.
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