Robert Boschgmbh

Oliver Zirn

Gerhard Meixner

Ludwig Thome

Peter Nadig

Egbert Schneider

The invention is based on a hand power tool having an electric motor () located in a housing (), via which an insertable tool () situated in a tool mount () is capable of being driven in a rotating manner, and having a safety device () with which a characteristic value for an occurrence of uncontrolled blockage of the insertable tool () can be detected via a sensor unit (), and the movement of the housing () can be decelerated. It is proposed that the safety device () is formed at least partially by a motor control unit (), via which the electric motor () can be actively decelerated when an occurrence of uncontrolled blockage of the insertable tool () is detected.

Hand-held machine tool

The invention is based on a hand power tool, in particular a drill hammer and/or a chipping hammer, having a striking mechanism () capable of being driven in a housing () by an electric motor (), via which an insertable tool () situated in a tool mount () is capable of being driven in an impacting manner, and having a sensor unit () via which a characteristic value for a no-load position can be detected. It is proposed that, when a no-load position is detected via a motor control unit (), the electric motor () and, therefore, the striking mechanism () can be actively decelerated.

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Esslingen, Germany

Oliver Zirn