Manual machine tool
AssigneeRobert Bosch GmbH
InventorsGerhard Meixner, Oliver Zirn, Egbert Schneider
Life of this patent
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Abstract
The invention is based on a hand power tool, in particular a drill hammer and/or a chipping hammer, having a striking mechanism (14) capable of being driven in a housing (10) by an electric motor (12), via which an insertable tool (18) situated in a tool mount (16) is capable of being driven in an impacting manner, and having a sensor unit (30) 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 (22), the electric motor (12) and, therefore, the striking mechanism (14) can be actively decelerated.
Claims11
A hand power tool, comprising:
- a striking mechanism (14) arranged in a housing (10) and with an electric motor (12), wherein the electric motor (12) serves to drive the striking mechanism, wherein the striking mechanism serves to drive an insertable tool (18) situated in a tool mount (16) in an impacting manner;
- and
- a sensor unit (30), wherein said sensor unit serves to detect a characteristic value for a no-load position of the insertable tool;
- and
- an electric motor control unit (22), wherein the electric motor control unit serves to actively decelerate the electric motor (12) and therefore the striking mechanism (14) when a no-load position is detected.
Dependencies are inferred from the claim text.