Robert Boschgmbh

Juergen Lennartz

Gerhard Meixner

Gerd Schlesak

Willy Braun

Achim Duesselberg

Helge Sprenger

Klaus Kuespert

Ulli Hoffmann

Ralph Dammertz

Matthias Tauber

Carsten Diem

Jan Koalick

Johannes Schnitzler

Stefan Holst

Rainer Nitsche

Antoine Vandamme

Heiko Roehm

Joachim Schadow

Tobias Herr

Joachim Hecht

Wolfgang Fischer

Uwe Engelfried

Otto Baumann

Andre Ullrich

Christoph Klee

Karl Frauhammer

Hardy Schmid

Thomas Winkler

Lars Schmid

Axel Kuhnle

Klaus Marx

Haris Hamedovic

Aldo Di Nicolantonio

Michael Weiss

Andreas Strasser

Andreas Schlegel

Christian Bertsch

Jan Breitenbach

Frank Mueller

Thomas Bernhardt

Manfred Hellbach

Helmut Heinzelmann

Ulrich Schulmeister

Hubert Steinke

Juergen Bochert

Christian Koepf

Thilo Henke

Mario Eduardo Vega Zavala

Werner Renz

Daniela Hossmann

Peter Jordan

Percussion unit, especially for a rotary hammer and/or percussion hammer, comprising a control unit which is designed for open-loop and/or closed loop control of a pneumatic percussion mechanism, and at least one operating condition sensor unit. According to the disclosure, the control unit is designed to detect at least one percussion mechanism parameter depending on measurement values of the operating condition sensor unit.

Percussion unit

A percussion unit for a rotary hammer and/or percussion hammer includes a control unit that is configured for open-loop and/or closed loop control of a pneumatic percussion mechanism. In at least one operating state in which the control unit changes from an idle mode to a percussion mode, the control unit is configured to adjust at least one operating parameter temporarily to a starting value.

The disclosure relates to an electric tool, particularly a hand-held power tool, comprising a control unit which has control software with control parameters, and is provided for the purpose of controlling a drive unit. According to the disclosure, said electric tool comprises an interface unit that is provided to fundamentally update and/or modify the control software and/or the control parameters.

Electric tool

The invention is based on a handheld power tool device, having at least one safety mechanism, which intervenes in an uncontrolled blocking situation, and which has a sensor unit. It is proposed that the sensor unit is provided for directly detecting at least one orientation parameter of a handheld power tool.

Handheld power tool device

The invention relates to a method for operating power tool, particularly an electrically driven hand power tool, having at least one tool drive shaft for directly or indirectly rotationally driving a tool insert. The tool insert is received in a tool holder releasably connected to the tool drive shaft. The tool drive shaft can be coupled to a drive device via a clutch device. The clutch device is provided with at least two different limit torques, which are selectable by an operator. When the tool insert and/or the tool holder is changed out, the clutch device is reset to a lower limit torque of the at least two different limit torques, particularly the lowest possible limit torque.

Method for operating a power tool having a clutch device

The invention relates to a power tool, in particular an electrically operable hand-held power tool, having at least one tool drive shaft for direct or indirect rotary drive of an insert bit, with the insert bit being accommodated in a tool holder that is connected or detachably connected to the tool drive shaft, particularly in a replaceable fashion. At least one drive device and at least one clutch device that couples the at least one drive device to the at least one tool drive shaft is provided which has at least two different, user-selectable, limit torques. An actuating device is provided that makes it possible, with a replacement of the insert bit and/or a replacement of the tool holder, to reset the clutch device to a lower limit torque, preferably to the lowest possible limit torque.

Power tool having clutch device

The invention relates to a hand power tool, in particular a drill hammer and/or chipping hammer, comprising a hammer unit () for producing a pulse in the direction of a hammer axis (). Said tool has an axial drive unit () with a drive element () and a motor unit (), in addition to a motor shaft (), which forms an angle () not equal to zero with the hammer axis () and which co-operates with the axial drive unit () by means of a torque transmission wheel () of said unit, the axial drive unit () being mounted on the opposite side of the torque transmission wheel () from the motor unit (). The driven element () of the axial drive unit () is mounted directly on the torque transmission wheel ().

Hand-held power tool, in particular a rotary hammer and/or chisel hammer

The invention relates to a hand-held power tool, especially a rotary hammer and/or chisel hammer. The hand-held power tool is provided with a vibration dampening unit having a first absorber mass unit with a first vibration dampening direction and at least one second absorber mass unit with a second vibration dampening direction. The hand-held power tool in particular has the first vibration dampening direction of the first absorber mass unit disposed as substantially parallel to the second vibration dampening direction of the second absorber mass unit.

Hand-held power tool

The invention relates to a wobble drive of a hand-held machine tool, particularly a drilling or chipping hammer, having a drive shaft, a wobble bearing disposed on the drive shaft, and a wobble plate supported on the wobble bearing. At least two wobble fingers having wobble finger axes being provided on the wobble plate. The invention provides that the axes of the wobble fingers form an angle different from 180&#xb0;.

Wobble drive of a hand-held power tool

The invention relates to a hand-held power tool, in particular a hammer drill which has a hammer drive, a rotary drive, a switching device, and a main output element. The switching device has a slide mechanism, which is designed for switching between different operating modes. According to the invention, the slide mechanism has at least one coupling element, which in at least one operating mode is directly coupled to a coupling element, the latter being rotationally fixed to the main output element.

The invention relates to a hand tool machine (), in particular a drilling and/or percussion hammer, with a housing () and a vibration-damped handle () elastically supported relative to the housing () with two essentially parallel legs () and a coupling element (or) between each leg (or) and the housing () that is pin-jointed to the leg (or) and the housing (). The coupling elements () are connected to each other by a connector () that synchronizes the movements of the coupling elements ().

Hand-held power tool with a vibration-damped handle

A handheld power tool has a housing, a tool receptacle, a motor having a motor shaft, an intermediate shaft, an element for transmitting a rotation of the motor shaft to a rotary motion of the intermediate shaft, a drive mechanism for a tool insertable into the tool receptacle, the drive mechanism being provided with an element for converting the rotary motion of the intermediate shaft into a rotary motion of the tool receptacle and an element for converting the rotary motion into the intermediate shaft into a hammering motion of the tool receptacle, wherein the motor shaft is coaxial with the intermediate shaft, and there is an element for coupling the motor shaft to the intermediate shaft.

Power tool with a rotating and/or hammering drive mechanism

The invention is based on a portable power tool having a vibration-damped handle () which has two legs () running in the longitudinal direction () of the portable power tool and which is motionally coupled to its housing (), wherein at least one lever () oriented transversely to the longitudinal direction () is coupled to each of the two legs () at an articulation point (), and wherein the levers () are coupled to a joint region () lying between the two legs () of the handle (). It is proposed that each lever () have a bearing point () between the joint region () and the respective articulation point ().

Handheld power tool with vibration-damped handle

The hand-held power tool has a vibration-damped main handle. The hand-held power tool has a device for fastening the main handle to a main element configured so that when the main element moves out of a stationary position toward the main handle the main element swivels around at least one swivel axis so that it is guided along a trajectory that extends with a slant of at least 10&#xb0; relative to a flat surface, which extends through a longitudinal tool axis and which has a surface normal oriented in a normal direction perpendicular to the longitudinal tool axis. As a result vibrations with a movement component perpendicular to the longitudinal tool axis are damped as well as vibrations that induce motion of the main element in the direction of the longitudinal tool axis toward the main handle.

Hand-held power tool with improved vibration-damped handle

A handheld power tool with a rotating and/or hammering drive mechanism for a tool () that can be inserted into a tool receptacle () has a unit which transmit the rotation of a motor shaft () to an intermediate shaft (), by which the tool receptacle () is set into a rotary motion and/or a hammering motion. A compact construction of the handheld power tool is attained by providing that the motor shaft () is coupleable or is coupled to the intermediate shaft () in one axis.

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Ostfildern, Germany

Juergen Lennartz