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US 9,366,299 B2Granted
Handheld drill/driver device
AssigneeRobert Bosch GmbH
InventorHeiko Roehm
Life of this patent
Estimating the term…
Abstract
A handheld drill/driver device having a mechanical torque coupling that is provided to limit a maximum torque that can be transmitted to an insertion tool. The handheld drill/driver device have at least one monitoring unit that is provided to electrically output a characteristic quantity that is a function at least of a torque transmitted to the insertion tool.
Claims9
A handheld drill/driver device, comprising:
- a mechanical torque coupling to limit a maximum torque that can be transmitted to an insertion tool, the mechanical torque coupling being configured to modify the limiting torque that can be transmitted to the insertion tool as a function of an operator input via a first operating arrangement;
- at least one monitoring unit to electrically output a torque characteristic quantity that is a function at least of a torque transmitted to the insertion tool;
- a drive unit;
- and
- a control unit to shut off the drive unit as a function of the torque characteristic quantity of the monitoring unit, and of an operator characteristic quantity,
- wherein the operator characteristic quantity is a maximum torque outputted by the drive unit and is defined by an operator input via a second operating arrangement, the maximum torque outputted by the drive unit being greater than the limiting torque set at the mechanical torque coupling,
- wherein the monitoring unit is configured to determine the torque characteristic quantity from at least one characteristic quantity of an energy supply of the drive unit,
- wherein the torque characteristic quantity is substantially proportional to a momentary torque of the drive unit,
- wherein the control unit compares the torque characteristic quantity to the operator characteristic quantity and shuts off the drive unit if the torque characteristic quantity exceeds the operator characteristic quantity.
6 more elements
A drilling and/or driving machine, comprising:
- a handheld drill/driver device, including:
- a mechanical torque coupling to limit a maximum torque that can be transmitted to an insertion tool;
- at least one monitoring unit to electrically output a torque characteristic quantity that is a function at least of a torque transmitted to the insertion tool;
- a drive unit;
- and
- a control unit to shut off the drive unit as a function of the torque characteristic quantity of the monitoring unit, and of an operator characteristic quantity,
- wherein the operator characteristic quantity is a maximum torque outputted by the drive unit and is defined by an operator input via a second operating arrangement, the maximum torque outputted by the drive unit being greater than the limiting torque set at the mechanical torque coupling,
- wherein the monitoring unit is configured to determine the torque characteristic quantity from at least one characteristic quantity of an energy supply of the drive unit,
- wherein the torque characteristic quantity is substantially proportional to a momentary torque of the drive unit,
- wherein the control unit compares the torque characteristic quantity to the operator characteristic quantity and shuts off the drive unit when the torque characteristic quantity exceeds the operator characteristic quantity.
7 more elements
Dependencies are inferred from the claim text.