Hand-held rotary hammer power tool
AssigneeRobert Bosch GmbH
InventorRudolf Fuchs
Life of this patent
Estimating the term…
Abstract
The invention relates to a striking mechanism of a handheld electric power tool, in particular a percussion drill and/or percussion hammer, having a hammer cylinder, a piston mounted with a guide section inside the hammer cylinder in a longitudinally displaceable manner, and a piston outer guide on which a guide area of the piston is guided in a longitudinally displaceable manner. A piston end located outside the hammer cylinder comprises an overlap for overlapping an end area of the hammer cylinder, and the guide area at least partially belongs to the overlap or is affixed there.
Claims20
An electric handheld power tool designed as a rotary hammer, a percussion hammer, or a rotary and percussion hammer, comprising:
- an electric drive motor having a drive shaft;
- a transmission driven by the drive shaft, having a transmission shaft;
- and
- an impact mechanism connected to the transmission, wherein a center axis of the transmission shaft or a center axis of the drive shaft constitutes a pivot axis around which the electric motor is able to pivot in order to reduce the overall length of the electric handheld power tool wherein the center axis of the drive shaft is arranged perpendicular to a pivoting plane of the drive motor.
An electric handheld power tool designed as a rotary hammer, a percussion hammer, or a rotary and percussion hammer, comprising:
- an electric drive motor having a drive shaft;
- a transmission driven by the drive shaft, having a transmission shaft;
- and
- an impact mechanism connected to the transmission, wherein a center axis of the transmission shaft or a center axis of the drive shaft constitutes a pivot axis around which the electric motor is able to pivot in order to reduce the overall length of the electric handheld power tool, and
- further comprising a drive spindle connected to the transmission, and
- further comprising at least one clutch so that either or both of the drive spindle and the impact mechanism can be selectively connected to the drive motor.
Dependencies are inferred from the claim text.