| 摘要 |
A jack having enhanced reliability and strength against torsional forces is provided. The jack including a plug inlet for receiving a plug having at least one electrode formed thereon for electrical signals, comprises an elongated spring having a free end part with a pressing portion capable of pressing a side surface of the inserted plug, and a proximal end part fixed to the jack. The jack further comprises a retaining portion capable of contacting a first contact portion and a second contact portion arranged at opposite sides thereof along a direction of inserting the plug when the plug is inserted into the jack.
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