Patent ID: 8083060
Filing Date: 2011-12-27
Classification: B25H

Abstract:
1. A tool holder assembly, comprising a housing, a rotating holder, a torsion spring, and an adapter, wherein the housing has a front side having a front opening and a rear side having a rear opening, and a chamber is formed within the housing, and the rotating holder is received within the chamber by being inserted through the front opening or the rear opening, the rotating holder engaging the housing by use of a middle hole at a distal end of the housing and a through hole located at a proximal end of the housing, and an opening is positioned at the front and rear sides of the housing, respectively, and a locking hole is formed above and below the through hole; wherein the rotating holder includes a top and a bottom, a row of slots at the top and the bottom of the rotating holder for receiving screwdriver bits in different shapes and sizes, and an insertion socket with a pin hole is disposed in the middle of a distal end of the rotating holder and engages into the middle hole of the housing by use of the torsion spring, and a receiving hole with a flange is positioned in the middle of a proximal end of the rotating holder, and the flange is rotatably disposed within the through hole of the housing while the adapter is inserted into the receiving hole, and engaging pieces at the proximal end of the rotating holder are fitting into the locking holes of the housing formed above and below the through hole, respectively, and an elastic protrusion configured to selectively engage a recess in an insertion portion of the adapter is positioned on an insertion path internally communicating with the receiving hole; wherein the torsion spring has a first end fitting into the pin hole of the insertion socket and a second end extending to lean against a corresponding portion within the housing; and wherein the adapter has an insertion hole at a proximal end thereof for screwdriver bits and the insertion portion at the distal end thereof for a hand tool to apply force, and, when the insertion portion of the adapter is inserted into the receiving hole of the rotating holder communicating with the through hole of the housing, the protrusion fits into the recess of the insertion portion in position.