Robert Boschgmbh

Robert Bosch Gmbh

Ralf Windsheimer

Heiko Roehm

Tobias Herr

Thomas Hampel

Suresh Subramaniam

Jens Brennenstuhl

Dietmar Saur

Jens Blum

Stefan Mock

Thorsten Schaal

Scott Novotny

Petra Kalinowski

Jan-Hendrik Heins

A hand-held power tool includes a housing, in which at least one drive unit configured to drive a tool holder is arranged. The tool holder is designed to hold an insertable tool. The hand-held power tool includes an alignment apparatus having a control unit and at least one luminous element arranged on the housing. The alignment apparatus is designed to determine, in real time, during operation of the hand-held power tool, a current deviation of a selectable machining angle, which is selected via the control unit and which is formed between the insertable tool inserted in the tool holder and a workpiece surface that is to be machined, from an actual inclination angle between the insertable tool inserted in the tool holder and the workpiece surface to be machined, and to visualize said deviation using the at least one luminous element.

Hand-held power tool having an alignment apparatus

A hand-held power tool, in particular an impact drill, is disclosed. The hand-held power tool includes a housing in which a drive unit for driving an output spindle is arranged. A catch mechanism is associated with the drive unit. The catch mechanism has a first crown disk which is connected to the output spindle for conjoint rotation, and a second crown disk which is arranged in the housing for conjoint rotation. In a first position, the first and second crown disks contact each other via associated catch geometries. In a second position, the second crown disk is arranged spaced apart from the first crown disk along a rotation axis of the output spindle. An annular friction element is arranged without friction in the first position, and generates a specified frictional force between the first and second crown disk in the second position.

Hand-held power tool comprising a catch mechanism

A portable power tool has a drive unit for rotationally driving a tool receptacle about an axis of rotation, the drive unit having at least one drive motor and a shiftable transmission, which is arranged in a transmission housing with an at least partially sleeve-like clutch housing and a transmission cover fastened thereto. The tool includes a shifting element for shifting the shiftable transmission between at least two different gears, and a locking sleeve for locking the shifting element in at least a first and a second shifting position is arranged in the clutch housing. The shiftable transmission forms, at least in the first shifting position, a cross-sectional plane perpendicular to the axis of rotation in which the locking sleeve is arranged at least regionally between the transmission cover and the shifting element and the shifting element is arranged at least regionally between the locking sleeve and the clutch housing.

Portable power tool having a shiftable transmission

A system includes: an add-on handle; and a hand-held power tool which includes a clutch setting ring, a chuck with clamping jaws and a handle fastening arrangement which is situated axially between a section of the chuck and the clutch setting ring. In at least one operating state the add-on handle fastened to the handle fastening arrangement and the clamping jaws of the chuck are situated in at least one plane which is oriented perpendicularly to a rotation axis of the chuck.

System having an add-on handle and a hand-held power tool

In a hand-held power tool having a transmission and a torque clutch, which has a torque limiting coupling associated with the transmission and with which a limiting transfer element is associated, to which at least one spring element is axially applied in the direction of the torque limiting coupling, a torque level of the torque clutch being settable via a user-operable operating element at least within predefined limits, the torque limiting coupling has at least one roller-shaped latch member.

Hand-held power tool having a torque clutch

The invention is based on a handheld power tool, in particular a cordless handheld power tool, having a gear unit and having a switch device for switching the gear unit. The switch device is provided with at least one user-control switch element, and at least one retaining element that is provided for acting on the user-control switch element in at least one position of the user-control switch element, with a force in the direction of at least one switch position, or for keeping the user-control switch element in at least one switch position. According to the invention, the retaining element is secured to a gear element of the gear unit.

Handheld power tool

In a handheld power tool having a reduction gear unit, drivable by a motor, for driving a drive shaft, the reduction gear unit being situated in a gear housing and being shiftable via a gearshift at least between a first gear having a comparatively high torque and a second gear having a comparatively low torque, the reduction gear unit is assigned a mechanical overload protection device which is designed to limit the reduction gear unit during operation of the handheld power tool, if a torque, transferred from the drive shaft to the reduction gear unit, exceeds a machine-specific limiting value.

Handheld power tool having a reduction gear unit

A device for regulating an increase in the output torque over time of an electric drive motor, including a monitoring unit for monitoring an operating variable of the electric drive motor, a regulating unit for regulating the operating variable for regulating the increase in output torque over time, a control unit for activating the regulating unit as a function of a time derivation of the monitored operating variable, the regulating unit being designed to be deactivated after a predetermined period of time. A method for regulating an increase in the output torque over time of an electric drive motor is also described. A corresponding tool and a computer program having program code for carrying out the method are also described.

Device and method for regulating an increase in the output torque over time of an electric drive motor

The invention describes a hand-held power tool having a drive train, which includes a motor with a rotor, a drive shaft, and a transmission. According to the invention, at least one flywheel mass is provided that is positionable rotationally symmetrical to the drive shaft and connectable to the drive shaft for co-rotation therewith.

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Stuttgart, Germany

Ralf Windsheimer