Hilti Aktiengesellschaft

Hilti Aktiengellschaft

Helmut Burger

Georg Braml

Manfred Ege

Lothar Dietl

Tobias Schmid

Mathias Doberenz

Erwin Manschitz

Josef F&uuml;nfer

Thomas Thanner

Wolfgang Schreiber

Frank Fritsch

Josef Anzinger

Torsten Tussing

Rene Richter

Thomas Naumann

Oliver Ohlendorf

Wolfgang Ludwig

Armin Hoffmann

Konrad Artmann

Wolfgang Millauer

Peter Gerold

Markus Forstner

Jens Frenzel

Jochen Erhardt

Ernst-Rudolf Luebkert

Lutz Troeder

Claus Osselmann

Hermann Schuster

Martin Zacher

Florian Mayr

Antonios Draganis

Peter Schmiddunser

Hansjoerg Schwarz

Edmund Kuebler

Georg Brami

Ernst-Rudolf L&uuml;bkert

Ralph Abel

Stefan Aust

An electric motor containing a board holder and an angle measuring unit with at least one Hall sensor for detecting a rotation angle and at least two hooks for receiving and holding a winding wire, wherein the angle measuring unit is designed to commutate the electric motor as a function of the detected rotation angle. The board holder contains a pot-like recess with an end face, wherein the recess and the angle measuring unit are designed such that, in an assembled state, the angle measuring unit bears against the end face of the recess such that the angle measuring unit is positioned before the at least two hooks in an arrow direction.

Hall board inside the end windings

Rotor for an electric motor, having a rotor shaft and, mounted on the rotor shaft, a rotor core having a number of core laminations arranged along an axis of the rotor core. Each core lamination includes a central contoured aperture which is traversed by the rotor shaft and which includes at least two radially extending elevations and at least two cutouts positioned between the elevations, wherein, to form a press fit of the core laminations on the rotor shaft, a distance between the free ends of the elevations is less than a diameter of the rotor shaft, and wherein a duct extending peripherally on the rotor shaft is formed by the respective cutout in the successively arranged core laminations.

Connection of a rotor shaft to a laminated core

Brushless electric motor for an electric handheld power tool, wherein the electric motor has an end plate and a Hall board which is arranged on the end plate, wherein the Hall board is axially fixed to the end plate by an elastic O-ring.

Brushless electric motor

A winding support () that serves to at least partially accommodate a stator coil of a stator, whereby the winding support () has a plurality of protrusions () that can each be inserted in an insertion direction (E) into a cavity that is formed by two adjacent stator pole teeth of a laminated core of the stator, whereby at least one of the protrusions () has a different length in the insertion direction (E) than at least one of the other protrusions ().

Winding support and stator

A hand-held power tool has a tool holder for holding a tool, an electric motor for driving the tool holder, and a handle for holding and guiding the hand-held power tool. A button has a button housing, a pin that can be moved on an actuation axis, and an electric slider which is connected to the pin and which slides on an electric slider track. The button housing is suspended in the handle in such a way that the button housing can be pivoted about a pivot axis perpendicular to the actuation axis.

Hand-held power tool

The hand machine tool according to the invention has an integrated tool or a tool holderto receive a tool. An electric motorserves to drive the toolor the tool holder. A battery packfor supplying power to the electric motorcan be pushed into a guidein a first direction. A plurality of electrical contactsfor contacting counter contactsof the battery packare disposed in a contact holder. Wires, which are connected in each case to one of the electrical contacts, have cores which extend in a wave-like manner in the first directionadjacent to the electrical counter contact

Hand machine tool

A hand-held power tool housing is disclosed. The housing includes a first housing part on the edge of which a first rebate is formed and a second housing part on the edge of which a second rebate is formed. The first rebate and the second rebate are formed in a complementary manner to one another such that the first housing part and the second housing part can be assembled in an assembly direction. A groove is formed on the edge of the first housing part and a spring is formed on the edge of the second housing part, forming an interlocking groove-spring connection in a transverse direction to the assembly direction.

Hand-held power tool housing

A hand-held machine tool has an integrated tool or a tool holder to receive a tool. An electric motor drives the tool or the tool holder. A battery pack for supplying power to the electric motor can be pushed into a guide in a first direction. Electrical contacts are disposed in a contact holder being offset with respect to each other in a second direction. A mounting for the contact holder holds the contact holder so that it can move in the first direction-and in a third direction with respect to the mounting. The first direction, second direction and third direction are orthogonal to each other in pairs. A spring acts upon the contact holder with a force opposite to the first direction. An end face oriented opposite to the first direction is provided with a centerer which cooperates with a centering support on the battery pack in order to prevent a relative movement between the end face and the battery pack in the third direction.

Hand-held machine tool

A brush holder () for a motor and having a plate-shaped base body () having an opening () for passing the motor rotor () therethrough, at least one brush receptacle () in which a carbon brush () is displaceably received, and an electronics can () projecting from the plate-shaped base body (), closed at its side () adjacent to an axis (A) defined by the base body opening (), and having an inner chamber () in which at least a portion of components of control electronics is received.

Brush holder

A brush holder () has a carbon holder () which forms a guide () for a carbon brush () and at which a holding spring () that presses the carbon brush () against a first guide side of the guide () with a holding pressure force (HF), is provided, with the holding spring () having two portions () which are biased against one another, and with the carbon holder () and the carbon brush () projecting through between the two portions ().

A receiving housing for a hand-held power tool includes a first housing part () having an opening (), a board () with electronic component () arranged in the first housing part () at a distance (A) from the opening (), and a second housing part () for closing the opening () and forming, together with the first housing part (), a receiving space (), with the second housing part () having at least one sleeve section () an axial length (L) of which at least corresponds to the distance (A) between the board () and the opening ().

Receiving housing for a hand-held power tool

An electric motor fixedly axially securable in a housing includes a brush plate with a plurality of axially projecting, uniformly circumferentially distributed, convexly shaped, locking segments formed on the brush plate. The brush plate and the locking segments may be formed of an injection-moldable plastic material. The locking segments may be spherically shaped, and the there may be four locking segments. The brush plate may include a plurality of radial, circumferentially distributed, stop surfaces with which are associated a corresponding plurality of radially inwardly projecting radial guides in the housing.

Electric motor with brush plate

A universal motor () includes at least two carbon brushes () contacting the commutator (), a ventilation device () for producing a cooling flow (K), and a dust protection arrangement for preventing penetration of material particles (M) into the commutation region () and including at least one guide member () that provides for delivering of the material particles (M) in the cooling flow (K), with the at least one guide member () having a smooth concave guide surface () located between the two carbon brushes () and extending adjacent to an outer surface () of the commutator () and toward a suction opening () connected with the cooling flow path ().

Universal motor with a device for removing dust

A brush mounting plate for a universal motor includes U-shaped brush guiding plates () for radially guiding carbon brushes () and having radially offset guiding plate feet () which extend through associated mounting holes () formed in the brush mounting plate (), with at least two guiding plate feet () being spaced at different distances from respective adjacent end surfaces () of an associated brush guiding plate ().

Brush mounting plate with brush guiding plates

A brush holder () has a support element () to which a carbon cartridge () is attached, with a carbon brush () being held therein so as to be displaceable, and to which an electrical fixed contact () is attached which is electrically connected to the carbon brush () by a cord (). A connection element () is provided between the cord () and the fixed contact (). The connection element () has crimping means () at a first end which defines a crimping receptacle () in which the cord () is secured, and plug-in means () at a second end, which plug-in means () can be connected to complimentary plug-in means () of the fixed contact (). The cord () projects into the crimping receptacle () through a first crimping receptacle end () adjacent to the plug-in means ().

Growing community of inventors

Moorenweis, Germany

Helmut Burger