Patent ID: 9205548
Filing Date: 2015-12-08
Classification: B25D,Y10T

Abstract:
1. An impacting tool having a tool bit configured to carry out an operation with linear movement in a longitudinal direction to perform the prescribed processing operation on the workpiece, comprising; a tool holder having a bit inserting hole that allows the tool bit to be inserted in the bit inserting hole, the tool holder having a hole on an inner surface of the tool holder, and a locking part that holds the tool bit inserted into the bit inserting hole so that the tool bit cannot be pulled out from the bit inserting hole, a longitudinal length of the hole substantially corresponding to a longitudinal length of locking part so that, when the locking part is disposed in the hole of the tool holder the locking part is restricted to move within the hole in the longitudinal direction of the tool bit and the locking part is movable in a direction perpendicular to the longitudinal direction of the tool bit; wherein the locking part undergoes relative movement with respect to the tool holder in the direction perpendicular to the longitudinal direction of the tool bit to allow to move between a bit holding position where the locking part is engaged with the tool bit inserted in the bit inserting hole to restrain pulling of the tool bit from the bit inserting hole, and a bit holding released position where the lock is released and the tool bit can be pulled out from the bit inserting hole, the locking part not being able to move in the direction perpendicular to the longitudinal direction of the tool bit in the bit holding position, and the locking part being able to move in the direction perpendicular to the longitudinal direction of the tool bit in the bit holding released position; wherein the locking part and the tool holder move together in the longitudinal direction of the tool bit while the locking part is disposed in the hole of the tool holder, the locking part and the tool holder moving together in the longitudinal direction of the tool bit between a bit anchored position where the locking part is set at the bit holding position to maintain the locked state with respect to the tool bit and a bit connection and disconnection allowed position where the locking part is set at the bit holding released position so that the lock can be released with respect to the tool bit.