| 摘要 |
A positioning mechanism comprises a slide base, a rotation arm and an elastic member. The slide base is disposed over a bottom surface of a second device and is slidable in first and second sliding directions. The sliding base has a track defining a closed sliding path that comprises a first positioning point, a first release point, a second positioning point, and second release point. The rotation arm comprises first and second ends, the first end being disposed on the bottom surface around a pivot, and the second end having a slide member capable of being positioned at the first positioning point or the second positioning point along the sliding path of the track. The elastic member is provided on the bottom surface and is configured to cause the second end of the rotation arm to rotate and to cause the slide base to slide.
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