| 摘要 |
A power adapter has a main body. A top of the main body defines a recess and an annular sidewall enclosing the recess. The annular sidewall has a sliding recess extending along the circumference of an inner surface thereof. A rotation-proof component defines a rotation-proof portion received in the sliding recess. A plug rotatably and detachably mounted to the main body defines a protruding portion at one side thereof. The protruding portion is capable of reciprocally sliding in the sliding recess and elastically pressing the rotation-proof portion for passing through the rotation-proof portion and then being restrained from reverse rotation because of restoration of the rotation-proof portion.
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