Hilti Aktiengesellschaft

Karin Groth

Uto Plank

Ernst-Rudolf Lübkert

Thomas Blatz

Andres Wellmann Jelic

Manuel Rosenzweig

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.

Electropneumatic impact mechanism

A clamping device () for the axial (AR) clamping of a tool disk () on a flange () associated with a drive spindle () of a hand-held power tool (), wherein the clamping device () has a screw (), which is to be screwed into an internal thread () of the drive spindle () to securely clamp the tool disk (), wherein the screw () is mounted in a coupling module () of the clamping device (), wherein the coupling module () has an internal contour () which is paired or can be paired positively with the drive spindle () for conjoint rotation in the circumferential direction (U).

Clamping device and hand-held power tool

A clamping device for axially clamping a disk-shaped tool on a flange of a spindle of a machine tool, includes a clamping disk which rests against the tool in a friction-fitting manner in the clamped state, a screw which is screwed into a threaded receiving opening in an end face of the spindle, an operating element which is connected to the screw in a rotationally fixed manner, and a first securing element which interacts with a corresponding second securing element provided on a flange such that when the screw is at least partly introduced into the receiving opening, the clamping disk is rotationally secured to the flange in a form-fitting manner, where the clamping disk can be rotated relative to the screw and the operating element. The first securing element can be rotated relative to the screw and is mounted in a rotationally fixed manner relative to the clamping disk.

Growing community of inventors

Landsberg am Lech, Germany

Karin Groth