Electric drill's chuck key holding device

Claim 1

A chuck key holding device in a rotary tool, for holding an L-shaped chuck key including an L-shaped rod forming one leg having thereon a radially enlarged gear part, and a second leg forming a grip part of said chuck key, said tool comprising: two half housings joined together along a junction plane to form a tool body having a top and laterally opposite sides; said chuck key holding device comprising: a first recess or receiving a gear part of a chuck key, said first recess being formed in said two half housings perpendicular to and crossing said junction plane; said first recess being in the form of transverse groove opening upwardly to the periphery of the tool body and having a radially enlarged portion intermediate of the ends thereof for receiving said gear part of said chuck key; a second recess for receiving said grip part of said chuck key, said second recess being formed in one of said half housings extending longitudinally along said tool body intersecting said first recess and being substantially perpendicular to said first recess; said second recess consisting of a longitudinal groove opening upwardly in the same direction as said transverse groove and intersecting at one end, said transverse groove at one of said sides of said tool body; a first elastic member protruding into said second recess for elastically holding said grip part against a surface of said second recess, and a second elastic member protruding into said first recess from a wall of said first recess in the opposite direction to which said second recess extends whereby, said one leg and said gear part of said chuck key is resiliently secured in said first recess by inserting said one leg into said recess past said second elastic member and said chuck key is rotated about the axis of said one leg until said second leg moves into said second recess past said first elastic member.