Power switch on/off mechanism of plug-in unit driven by an insertion/ejection device in a printed circuit board

A power switch on/off mechanism of a plug-in unit driven by an insertion/ejection device mounted to a printed circuit board (PCB) wherein said power switch on/off mechanism includes said insertion/ejection device having a handle and a bracket mounted to the front panel for inserting/ejecting the plug-in unit from a sub-rack, and the PCB having a plug-in unit power switch having a power switch lever, said power switch on/off mechanism comprising:

• a power switch on/off lever including:
• a protrusion formed in one end of said power switch on/off lever,
• a guide groove formed in a center portion of said handle for receiving said protrusion therein when inserting/ejecting said plug-in unit, and
• a jaw formed in another end of said power switch on/off lever for receiving the power switch lever;
• wherein the power switch on/off lever is inserted into a lever engaging hole formed in said bracket, and said power switch lever of said plug-in unit power switch is disposed in an interior of said jaw,
• wherein further when inserting said plug-in unit into said sub-rack, said protrusion of said power switch on/off lever is inserted into said guide groove formed in said handle, said protrusion of said power-switch on/off power switch on/off lever is lowered along said guide groove, said jaw of said lever is lifted, and said power switch lever of said plug-in unit power switch in the interior of said jaw turns to the on state, and
• wherein further still, when ejecting the plug-in unit from the sub-rack, said protrusion of said power switch on/off lever is lifted along said guide groove of the handle and ejected from said guide groove, said jaw is lowered and said power switch lever of said plug-in unit power switch turns to the off state from the on state through a dead point.