| 摘要 |
The invention provides a power adapter assembly including an adapter body, a replaceable plug and a rotation locking collar. The adapter body comprises a cylindrical casing and a circular plug receiving base fixed on top of the cylindrical casing. The plug receiving base has a recess on the top thereof and a circular peripheral surface, wherein the recess has an engagement block on the side wall thereof. The circular peripheral surface has a flange with an indentation on the top edge thereof, and a guiding groove formed from the indentation and extending downward to the bottom edge thereof. The replaceable plug is detachably mounted onto the plug receiving base and comprises a cylindrical support base comprising an upper portion and a lower portion sized to fit into the recess of the plug receiving base. The upper portion has an elongated engagement groove along its peripheral surface with one end extending to the bottom edge thereof and alignable with the guiding groove. The lower portion has an engagement groove adapted to engage with the engagement block. The rotation locking collar is detachably sleeved onto the plug receiving base and the support base, wherein the locking collar has a tab member on the inner top edge thereof adapted to enter the guiding groove and said one end of the elongated engagement groove. The tab member is further allowed to rotate into and engage with the elongated engagement groove by rotation of the locking collar.
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