Patent ID: 7033204

Claim:
A locking/unlocking mechanism for mobile rack, comprising: a sleeve member, said sleeve member comprising a receiving open chamber longitudinally extending through front and rear sides thereof, and a suspending retaining spring plate disposed at a bottom side thereof, said retaining spring plate having a center retaining hole and a front free end terminating in a beveled guide portion; a sliding member insertable into the receiving open chamber of said sleeve member, said sliding member comprising a base, a handle, a movable holder plate, and a locating plate, said base having a plurality of bottom mounting rods fastened to said locating plate and a raised portion protruding from a bottom wall thereof and adapted to engage the retaining hole of the retaining spring plate of said sleeve member, said handle having a loop-like shape and a V-shaped protruding portion disposed at a bottom side thereof on the middle, said movable holder plate having a hole adapted to accommodate the V-shaped protruding portion of said handle, a beveled guide portion adapted to match the beveled guide portion of said retaining spring plate of said sleeve member, and a sliding groove adapted to accommodate said handle, said locating plate having two mounting holes respectively fastened to the bottom mounting rods of said base, a chamber adapted to accommodate said movable holder plate, two side arms symmetrically disposed at two opposite lateral sides, and two locating grooves respectively formed in said side arms for the positioning of said handle; and wherein when inserted said sliding member into said sleeve, said raised portion of said base of said sliding member is engaged into the retaining hole of said retaining spring plate of said sleeve member to lock said sliding member to said sleeve member; when the user turned said handle outwardly downwards from said sliding member, said V-shaped protruding portion is forced against said movable holder plate, thereby causing the raised portion of said base of said sliding member to be disengaged from the retaining hole of said retaining spring plate of said sleeve member to unlock said sliding member from said sleeve member.