Patent ID: 9486075
Filing Date: 2016-11-08
CPC Classification: A47B,B25H

Claim Text:
1. A tool cabinet comprising: a cabinet housing that includes a top cover, said top cover having a top surface that is formed with a storage groove; a plurality of drawers that are movably disposed in said cabinet housing; a working platform unit that has a platform member disposed above said top cover, and two extension members extending respectively and downwardly from two opposite ends of said platform member through said top cover; two slide rails that are respectively disposed at opposite sides of said cabinet housing, said extension members engaging respectively and slidably said slide rails; two lifting units that are respectively and movably disposed at the opposite sides of said cabinet housing, and that are connected to said working platform unit; a linkage unit that interconnects said lifting units and that synchronizes movement of said lifting units; and a drive unit that is drivingly connected to one of said lifting units, and that is operable to drive synchronized movements of said lifting units to move said working platform unit along said slide rails between a lowered position, where said platform member is adjacent to said cabinet housing and closes said storage groove, and a lifted position, where said platform member is away from said cabinet housing; wherein each of said lifting units has a guide tube that is disposed in a respective one of said slide rails, a nut that is disposed on a top end of said guide tube, a threaded rod that is threadedly connected to said nut and that has a top end adjacent to said platform member and an opposite end inserted telescopically into said guide tube, and a transmission bevel gear that is fixedly disposed on said top end of said threaded rod; wherein said linkage unit includes a linkage rod that is disposed below said platform member, that extends along a horizontal axis, and that is rotatable about the horizontal axis, and two linkage bevel gears that are respectively connected to two opposite ends of said linkage rod and that respectively mesh with said transmission bevel gears of said lifting units; wherein said drive unit includes a crank member that is mounted to said working platform unit and that is connected to said transmission bevel gear of the one of said lifting units; wherein said drive unit further includes a drive bevel gear that is connected to said crank member and that meshes with said transmission bevel gear of the one of said lifting units; wherein said crank member has a rotatable connection portion that is mounted to said working platform unit and that has an end connected to said drive bevel gear, and a handle portion that is connected to said connection portion and that is opposite to said drive bevel gear; wherein said drive bevel gear of said crank member has a main gear segment that meshes with said transmission bevel gear of the one of said lifting units, and an engaging segment that is connected co-axially to said main gear segment and that engages removably, fittingly and co-rotatably said engaging space of said rotatable connection portion.