| 摘要 |
PURPOSE: A sealing structure of a contactless relay is provided to improve the electric insulating characteristic by interposing a sealing member between a heat sink and a case. CONSTITUTION: A contactless relay comprises a printed circuit board(10), a case(20), and a heat sink(40). The case(20) is coupled to an upper portion of the printed circuit board(10). The heat sink(40) is coupled to a lower portion of the case(20) and provided with a triac(30). The triac(30) is fixed on an upper surface of the heat sink(40). A sealing member(50) is interposed between the case(20) and the heat sink(40). A coupling groove(51) is provided on the edge of a lower surface of the sealing member(50). A projected rim(42) formed on the heat sink(40) is associated with the coupling groove(51) to make a sealing of the contactless relay.
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