| 摘要 |
PROBLEM TO BE SOLVED: To provide a dustproof jack capable of preventing the entrance of dusts from an insertion hole of a jack for inserting a fitting plug when the fitting plug is not inserted. SOLUTION: A jack 10 has insertion holes 11, 12 for inserting a fitting plug and a contact spring 30 which is electrically connected to an electrode of the fitting plug. A shutter 50 which blocks the insertion holes 11, 12 when the fitting plug is not inserted and opens the insertion holes 11, 12 when the fitting plug is inserted is assembled in the front of the jack 10. |
