Patent ID: 7258349

Claim:
A hand power tool selected from the group consisting of a drill hammer and an impact hammer, comprising an exchangeable tool holder; a guide pipe which receives said tool holder at its free end; a locking device arranged on said guide pipe and operative manually for fixing said tool holder on said guide pipe in a defined locking position assumed by said tool holder on said guide pipe, so that a mounting position is arranged before the locking position in a push direction of said tool holder onto the guide pipe, wherein in said mounting position, said tool holder is held unlocked on said guide pipe, said locking device being provided with displacement means activatable by a release of said locking device and providing a displacement of said tool holder to said mounting position, wherein said tool holder in its end portion in which it engages said guide pipe has at least one radially displaceable and axially non-displaceable locking body, while said guide pipe in the locking position of said tool holder has at least one pocket which axially non displaceably receives said locking body, and also in the mounting position of said tool holder has at least one concavity which receives said locking body and is located axially before said pocket.