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US 11,992,926 B2Granted
Hand-held power tool
AssigneeRobert Bosch GmbH
InventorsMatthias Tauber, Immanuel Werner, Hansjoerg Beutel, Andreas Strasser, Hardy Schmid
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Abstract
A hand-held power tool includes an electric motor, a tool unit, and at least one operating unit. A motor switching unit is configured to sense a contact-pressure characteristic between the tool unit and the operating unit, and configured to switch the electric motor at least partially in dependence on the contact-pressure characteristic.
Claims15
A hand-held power tool, comprising:
- an electric motor;
- a tool unit;
- at least one operating unit;
- and
- a motor switching unit configured to sense a contact-pressure characteristic between the tool unit and the operating unit, and configured to switch on the electric motor after a predefined time period, greater than zero, from when the sensed contact-pressure characteristic exceeds a switch-on threshold value, wherein
- the motor switching unit is configured for at least partially torque-dependent switching of the electric motor, and
- the at least partially torque-dependent switching comprises, in response to a sensed torque dropping below a threshold torque, at least one of (i) interrupting an electric power supply to the electric motor, and (ii) braking the electric motor.
4 more elements
Dependencies are inferred from the claim text.