Modular case handle positioning device

A modular case handle positioning device comprising:

• a rectangular modular case having, undersides of a front surface of which are formed depressed indentations, each of the indentations have an inner groove surface, and position fixing holes are defined in a lower side of the front surface;
• at least more than one handle is movable connected to a lower surface of two sides of the modular case, each of the handles having a structure comprising:
• a platelike main body, wherein an upper cover is affixed to an upper surface of a front plate, and a lower cover is affixed to a lower surface, moreover, a front pivot joint hole is defined in the front plate, and a rear pivot joint hole is defined in a rear side of the main body;
• a side edge of the front plate forms an L-shaped side;
• an L-shaped linkage having two planar sides of which form a holding slot, a hook joining at an end of the planar sides, and a through hole is defined at a corner of the L-shaped linkage;
• and
• a first shaft pin is inserted into the through hole and the front pivot joint hole of the main body;
• the L-shaped linkage is able to angular swing on the front plate around the shaft pin as axis;
• a second shaft pin passes through the rear pivot joint hole and into the inner groove surface of the indentation;
• wherein angular displacement of the handle is made around the first shaft pin as axis, and the hook clasps onto or separates from the position fixing hole.