Ebm-papst Mulfingen Gmbh & Co Kg

Jochen Häfner

Martin Bürkert

Gunter Streng

Gerhard Sturm

Sebastian Schroth

Jens Müller

Walter Hofmann

Rainer Müller

Werner Müller

Martin Baun

Stephan Nadig

Matthias Hennegriff

Markus Gelbing

Jürgen Freudenberg

Erich Pollok

Michael Fuchs

An electric motor with a stator and an axle (). The stator has a laminated stator core () formed from a multitude of individual teeth (). At least some of the individual teeth () each have a radially inner pressing portion () for elastic and/or plastic deformation and establishment of a press-fit connection between the laminated stator core () and the axle (). The stator is fixed to the axle () through the deformation of the pressing portions () and a force acting on the axle (). At least one securing element () is on at least some of the pressing portions () to transmit a torque between the axle () and the laminated stator core () and fix the position of the laminated stator core () relative to the axle () in the circumferential direction (U).

Electric motor with a stator and an axle that can be press-fitted thereto

A stator for an electric motor, wherein the stator has a laminated stator core which is formed from a multitude of individual teeth that can be arranged in a ring around an axis of rotation of the electric motor and interconnected in the circumferential direction, wherein each individual tooth of the plurality of individual teeth is flanked on both sides along the circumferential direction by a further individual tooth from among the plurality of individual teeth and has a connection portion for mechanically fixing the individual tooth to the individual teeth by which it is flanked, and wherein at least some of the individual teeth each have a pressing portion for elastic and/or plastic deformation and establishment of a press-fit connection between the laminated stator core and a radially inner axle, so that, upon joining of the stator to the axle, the stator can be fixed to the axle through the deformation of the pressing portions and a force acting on the axle as a result of the deformation between laminated stator core and axle.

Stator for an electric motor

An electric motor (), in particular, an external rotor motor, has a stator () with a stator core (), a non-rotatably attached shaft (), that extends in the axial direction (A) of the motor, and a rotor bell (), rotatably arranged relative to the non-rotatable shaft (). The rotor bell () has cooling ribs in an open, spoke-like design rotatably mounted on the shaft () by at least one first stator-side bearing shield (). A cooling device () is arranged between and connects the shaft () and the stator core (). The cooling device () has a plurality of axial flow openings () arranged in the circumferential direction that causes cooling when the motor rotates during operation.

Electric motor having improved cooling

Ventilator

An electric motor, in particular an external rotor motor, comprising a stator which is attached by means of latching elements to a motor carrier using a plug-in joining operation. The elastic elements for isolating vibration are arranged in the connecting region between the stator and the motor carrier in a way that the stator is indirectly connected to the motor carrier by means of the elastic elements.

Electric motor with screwless plug-type mounting

Growing community of inventors

Blaufelden, Germany

Jochen Häfner