Patent ID: 7410227

Claim:
A cabinet safety device comprising: a fixing base; a slide base mounted on the fixing base extending from a top to a bottom of a cabinet including a U-shaped protruding member, wherein multiple inner openings are defined in the protruding member of the slide base; a lock member having a first tongue with a first groove, and a V-shaped chamfer formed at a distal end of the first tongue; and a fastening member having a base pipe mounted securely on the cabinet; a piston received in the base pipe with multiple tips formed at a bottom of the piston; a resilient member and a switch member secured between the base pipe and the piston, wherein the switch member has a bushing with a through hole defined in the bushing and the through hole is extended to define a first cavity that has a bigger diameter than a diameter of the through hole; multiple deep channels defined axially in an inner wall of the through hole and the first cavity and between every two adjacent deep channels; multiple shallow channels defined axially in the inner wall of the through hole and the first cavity, wherein the deep channels and the shallow channels have a same axial depth, but a radial depth of the shallow channels is smaller than a radial depth of the deep channels and a radial bottom of the shallow channels is not as deep as that of the first cavity; a rotating rod mounted in the piston and the bushing with a spindle and a driven member formed at a lower part of the spindle, the resilient member being mounted between the base pipe and the rotating rod; a rod tooth member is formed at a top of the driven member, which is engaged with a piston tooth member that is formed at the bottom of the piston; and a surface of the driven member has multiple prominent portions formed thereon and are all received in the deep channels or all received in the shallow channels.