Handheld machine tool having a tool holding fixture

A handheld machine tool, comprising:

• a drive motor;
• an output shaft
• a rotary striking mechanism configured to provide rotary impacts on or to the output shaft;
• a locking device;
• and
• a tool holding fixture, which has a multi-faced inner receptacle and a multi-faced outer receptacle, the multi-faced inner receptacle being configured for connection to a first tool insert which is lockable in the multi-faced inner receptacle, using the locking device assigned to the tool holding fixture, and the multi-faced outer receptacle being configured for connection to a second tool insert which has an inner multi-faced coupling that is slidable onto the multi-faced outer receptacle;
• wherein the locking device has an actuating element which, for unlocking the first tool insert from a specified locking position, is rotatable about a longitudinal axis of the tool holding fixture into a specified unlocking position,
• wherein the locking device has a plurality of locking balls which are supported in openings of the output shaft and which are movable radially inwardly relative to the longitudinal axis of the tool holding fixture for locking the first tool insert in the multi-faced inner receptacle upon rotation of the actuating element from the specified unlocking position to the specified locking position,
• wherein the locking device has a blocking element for blocking the actuating element in the specified locking position or in the specified unlocking position, the blocking element being separate from the locking balls,
• wherein the actuating element has a first stopping element and a second stopping element, the first stopping element lying against the blocking element for blocking the actuating element in the specified unlocking position, and the second stopping element lying against the blocking element for blocking the actuating element in the specified locking position,
• wherein the locking device has a resetting device configured to move the actuating element from the unlocking position into the locking position automatically, the resetting device having a pressure spring and a ball, the pressure spring being configured to act upon the actuating element via the ball using a specified spring force in a direction running radially relative to the longitudinal axis of the tool holding fixture.