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US 9,394,969 B2Granted
Hand-held tool gear mechanism unit
AssigneeRobert Bosch GmbH
InventorsThomas Hampel, Juergen Gairing
Life of this patent
Estimating the term…
Abstract
A hand-held tool gear mechanism unit includes a drive gearwheel, an output gearwheel, and a connecting unit. The output gearwheel has a rotational axis spaced apart radially from a rotational axis of the drive gearwheel. The connecting unit is configured to transmit a rotational movement from the drive gearwheel to the output gearwheel substantially without a step-up transmission ratio. The connecting unit is configured to couple the drive gearwheel and the output gearwheel such that they can be moved relative to one another about a pivot axis.
Claims13
A hand-held tool gear mechanism unit, comprising:
- a drive gearwheel having a first rotational axis;
- an output gearwheel having a second rotational axis spaced apart radially from the first rotational axis;
- a connecting unit configured to transmit a rotational movement from the drive gearwheel to the output gearwheel substantially without a step-up transmission ratio, the connecting unit coupling the drive gearwheel and the output gearwheel in such a way that the drive gearwheel and the output gearwheel are pivotable relative to one another about a pivot axis;
- a pivoting housing including (i) a first part fixed relative to the first rotational axis and defining a pivoting opening through which the second rotational axis extends and (ii) a second part extending around the second rotational axis, projecting through the pivoting opening, and configured to pivot about the pivot axis with the output gearwheel;
- and
- an output shaft configured at least partially integrally with the output gearwheel, the output shaft extending into the second part,
- wherein the second part includes an articulation closure configured to cover more than 90% of a region of the pivoting opening that is uncovered by the output shaft.
4 more elements
A hand-held tool gear mechanism unit, comprising:
- a drive gearwheel having a first rotational axis;
- an output gearwheel having a second rotational axis spaced apart radially from the first rotational axis;
- a connecting unit configured to transmit a rotational movement from the drive gearwheel to the output gearwheel substantially without a step-up transmission ratio, the connecting unit coupling the drive gearwheel and the output gearwheel in such a way that the drive gearwheel and the output gearwheel are pivotable relative to one another about a pivot axis;
- and
- a pivoting housing including (i) a first part fixed relative to the first rotational axis and defining a pivoting opening through which the second rotational axis extends and (ii) a second part extending around the second rotational axis, projecting through the pivoting opening, and configured to pivot about the pivot axis with the output gearwheel,
- wherein the second part includes an annular belt circumferentially surrounding the pivot axis and configured to at least partially close the pivoting opening.
3 more elements
A hand-held tool, comprising:
- a hand-held tool gear mechanism unit, including:
- a drive gearwheel having a first rotational axis;
- an output gearwheel having a second rotational axis spaced apart radially from the first rotational axis;
- a connecting unit configured to transmit a rotational movement from the drive gearwheel to the output gearwheel substantially without a step-up transmission ratio, the connecting unit coupling the drive gearwheel and the output gearwheel in such a way that the drive gearwheel and the output gearwheel are pivotable relative to one another about a pivot axis;
- and
- a pivoting housing including (i) a first part fixed relative to the first rotational axis and defining a pivoting opening through which the second rotational axis extends and (ii) a second part extending around the second rotational axis, projecting through the pivoting opening, and configured to pivot about the pivot axis with the output gearwheel,
- wherein the second part includes an annular belt circumferentially surrounding the pivot axis and configured to at least partially close the pivoting opening.
4 more elements
Dependencies are inferred from the claim text.