Patent ID: 7168772

Claim:
An engaging device of a handle in combination with a modularized casing comprising a rectangular modularized casing, a surface of which is provided with a pivoting hole; a handle, a rear end of which is formed with a pivoting hole, and a side of an outer end of which is provided with a projection piece in an extended shape, with a projection body of a smaller outer diameter being formed at an outer end of the projection piece and a longitudinal projection part being formed at an inner side of the projection piece; an engaging device including an outer sleeve, an interior of which is provided with a transversal and plate-shape groove and a cylindrical groove, both of which are interconnected, and a side edge of which is extended into a hollow through-slot and a hook with the through-slot providing for a transfixing of the projection part; and a spring, which is inserted into the cylindrical groove and a connection end of which is sheathed into the projection body with the projection piece being transfixed into the plate-shape groove; a positioning hole which is located at an edge of a side end of casing; said hook which can be emplaced in the positioning hole and can be locked to an inner wall of positioning hole; a shaft pin which is loosely connected to the pivoting hole of casing and the pivoting hole of handle with the handle being rotated against the shaft pin.