Importance

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Abstract

The present invention discloses a mounting device comprising a supporting frame comprising a chamber therein which is covered by a bottom cover. The chamber includes at least one positioning pin and at least one first spring. A first button is located on the supporting frame and cooperates with the positioning pin. The bottom cover includes at least one aperture corresponding to the positioning pin. A second button acting as a safety switch is located on the supporting frame. When pressing both the first button and the second button, the positioning pin can be pushed out of the bottom cover. If the second button is not pressed, the first button is thus locked, so that the positioning pin is incapable of extending out of the chamber. Due to the second button being added as a safety switch, the operator can press the first button downward so as to push the positioning pins out only after the second button is pressed first. Thus, the operator will not be accidentally stabbed if either one of the two buttons is pressed carelessly so that the overall safety of the device is improved greatly.

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First Claim