Abstract: The invention relates to the decoupling device for an actuator, which has a number of decoupling elements. A securing element is disposed between these decoupling elements. The actuator is fastened to the securing element. The decoupling elements rest against radial support shoulders and axial support shoulders of the securing element and a housing. These are embodied so that radial, axial, and tangential oscillations of the actuator are decoupled from the housing.

Abstract: Cooling fan with a fan wheel equipped with blades and an electric motor that has a stator and a rotor that is supported in a rotationally fixed manner on a driven shaft. For a purpose of a cost-saving and compact design of the cooling fan with low fan noise, the rotor is embodied as an external rotor with a bell-shaped pole housing encompassing the stator. The fan wheel is rotationally fixed in relation to the pole housing so that the fan wheel axially encompasses the pole housing at least partially and contacts the outer circumference of the pole housing at a number of points.

Abstract: Decoupling devices for an electric motor in relation to a housing usually have decoupling bushes made of elastic material, which are disposed between a motor mount and the housing and extend along a bush longitudinal axis. The decoupling device includes a first contact point at which the decoupling device rests against the motor mount, and a second contact point at which the decoupling device rests at least indirectly against the housing, each decoupling bush is secured so that the decoupling bush can be radially deflected in relation to the bush longitudinal axis, by means of which the forces are in fact transmitted, but vibrations are damped or insulated.

Abstract: A brushless direct current electric machine, comprising a stator with a hub and first stator pole teeth, which extend radially outward from this hub and have excitation coils, and with second stator pole teeth, which do not have excitation coils, interposed the first stator pole teeth, and has a rotor equipped with permanent magnets, which can rotate around the stator. The electric machine also has a base plate in which a rotor shaft bearing is inserted directly into the hub of the stator which fastens each of the second stator teeth to the base plate. The base plate is made of sheet metal and has supporting nipples oriented toward the second stator pole teeth. The second stator pole teeth have holes through which screws extend, which are screwed into the supporting nipples. The electric machine operates as a brushless direct current motor and is manufactured inexpensively.

Abstract: An electric drive motor with a rotor in the form of an external rotor and with a stator, which has a base body comprised of heat conductive material. A bearing hub for the rotor and a support that extends radially away from the hub and is for containing a printed circuit board. The printed circuit board is equipped with electronics and is disposed on a side of the support oriented away from the rotor for the sake of an improved removal of the dissipated heat that is produced in the electronics, a multitude of concentric cooling ribs are embodied on the radial surface of the support oriented toward the rotor.

Abstract: A method of balancing an electronically driven air blower unit comprising a radial blower with a high-speed electronically commutated d.c. motor which drives the blower and which is of external rotor design, utilizing a balancing device into which the completely mounted air blower unit (1) can be inserted, without housing lid, and with which electrical contact (101, 102, 103; 201, 202, 203) can be made. The balancing device is provided with a control device for the motor (3, 4, 5) of the air blower unit and with a device (9) for bridging the motor electronics (10) of the air blower unit (1) itself. In order to drive the part to balanced of the air blower unit, its electromechanical transducer (3, 4, 5) is used, which for this purpose is actuated by the control device provided in the balancing device. The balancing process is essentially carried out in two compensation planes which are spaced axially from one another and are parallel with one another.