Hilti Aktiengesellschaft

Ernst-Rudolf Lübkert

Uto Plank

Michael Göttlinger

Karin Groth

Maximilian Kummer

Ferdinand Kristen

Jochen Erhardt

Adrian Steingruber

Georg Braml

Michael Schamberger

Daniela Lachica Koch

Andres Wellmann Jelic

Markus Sommer

Manuel Roelecke

Martin Siemen

Philipp Amelung

Julian Janke

Silke Topp

Steffen Mucha

Dogukan Mintas

Georg Kugelmann

Hui Sun

Manuel Rosenzweig

Johannes Marder

Isabel Völz

Simon Weis

Jeltsch Thomas

Tobias Ströer

Andreas Janisch

Konstantin Wullbrandt

An electropneumatic impact mechanism for an electric hand-held power tool, in particular a hammer drill and/or chipping hammer, wherein the impact mechanism has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is designed as an externally toothed gearwheel and is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing about an axis of rotation on the other side, an axial gap, preferably for optionally receiving at least part of a lubrication space separating element, is provided between an eccentric wheel surface facing the connecting rod and a connecting rod surface facing the eccentric wheel.

Electropneumatic impact mechanism

An electric hand-held power tool, in particular a hammer drill and/or chipping hammer, having an electropneumatic impact mechanism which has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in an axial direction in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing via an end plate of the transmission housing on the other side, wherein the transmission housing is subdivided at least into a main shell and a cover shell separate from the main shell, such that the guide tube is braced against the main shell at least partially by the cover shell.

Electric hand-held power tool

An electropneumatic impact mechanism for an electric hand-held power tool, in particular a hammer drill and/or chipping hammer, wherein the impact mechanism has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in the axial direction in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing on the other side, wherein the impact mechanism has a bearing body on which the eccentric wheel is mounted rotatably by means of a pair of plain bearings.

An eccentric drivefor a portable power toolhas a motor, an eccentric wheel, a linear guide, a slideand a connecting rod, which has a headsuspended on the slideand a second headsuspended on the eccentric wheel. A bearing bushfor the rotatable mounting of the connecting rodis provided at least on one of the two heads. The headis composed of an injection molding material. The bearing bushis composed of a fiber composite material, which includes continuous carbon fibersembedded in a thermoplastic matrix.

Eccentric drive for a portable power tool

The handle for a handheld power tool includes a grip portion which can be gripped by a user, a fastening portion by which the handle can be fastened to the handheld power tool, and an oscillation decoupling device which is designed to decouple oscillations acting on the fastening portion from the grip portion, wherein the oscillation decoupling device has a spring element with a settable spring stiffness.

Handle and handheld power tool

Side handle for an electric hand-held power tool, wherein the side handle has a grip region designed to be gripped by a user, and a clamping unit, by which the side handle can be releasably fastened to a machine neck of the hand-held power tool, wherein the clamping unit has an operating element, by which the clamping unit is able to be clamped and unclamped, wherein the operating element, when the clamping unit is in the clamped state, is substantially flush with the surface of the grip region. The operating element is preferably in the form of a clamping lever.

Side handle for an electric hand-held power tool

A turning-pivoting commutating rotary switch () with brush guides () for reversing the direction of rotation of a universal motor, which has two stator contacts () each making contact with a contact rail () running partially peripherally at at least one contact point (), which are conducting connected with the two diametrically opposing brush guides (), wherein a contact rail () with two contact points () extends over at least a half periphery and wherein both stator contacts (), at which at least one contact point () can be rotatably switchable at a contact rail () running partially peripherally, are arranged on only one side of the stator ().

Commutating rotary switch

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Landsberg am Lech, Germany

Ernst-Rudolf Lübkert