Robert Boschgmbh

Hans-Joachim Lutz

Horst Braun

Thomas Bilsing

Johann Kunz

Hermann Lehnertz

Oliver Gamm

J&eacute;rome Debard

Guenter Rademacher

Reinhard Meyer

Dieter Willms

Martin Leins

Johann Koeppel

Anne Perrin-Bonnet

The invention relates to a claw pole generator comprising a claw pole rotor, two magnet wheel halves () which are mounted on a drive shaft () and are provided with claw-shaped magnet poles () that mesh with each other, and an annular closing member () located between adjacent magnet poles (). The magnet wheel halves () can be inserted into pockets () of the closing member () along with the magnet poles () thereof such that the closing member () overlaps the magnet poles () on the edge in at least some areas. Also disclosed is a closing member ().

Claw pole generator and closure body for a claw pole generator

A claw-pole rotor for an electrical machine, in particular a rotary current generator, having two pole wheels (), which each carry claw poles (and, respectively), which each originate in a plate region () and have a pole root (), and on a circumference of the claw-pole rotor (), claw poles () of the pole wheels () are located in alternation, and located between the claw poles or interstices (), and a claw pole () has a radially outward-oriented cylindrical-jacketlike surface (), by which a pivot axis () is defined, and a chamfer () extends on the one hand in a circumferential direction and on the other in an edge direction of a claw pole (and, respectively), wherein the chamfer () has a center portion m in the edge direction that intersects a transition plane () which demarcates the pole root () and the freely projecting part of the claw pole (and, respectively), and the center portion m amounts to 8/10 of the length, oriented in the edge direction, of the chamfer (); and that the claw pole () has a width B, oriented in the circumferential direction, and a half width Bon the cylindrical surface (), in a plane of the claw pole () that is vertical to the pivot axis (), defines a point (P), and a tangent (T) can be inscribed into this point (P), and an angle of inclination &#x3b1; which has a magnitude of between 15&#xb0; and 25&#xb0; is enclosed between the tangent (T) and the chamfer () in the plane that is vertical to the pivot axis ().

Claw-pole rotor for an electrical machine

The present invention relates to a fan wheel () for electrical machines, in particular for alternators of motor vehicles, with a fan disk () that, on its axially outwardly directed end face, has a number of fan blades () distributed around the circumference in the shape of a circular ring, the fan blades extending away from the fan disk in the axial direction, so that cooling air beneath the fan blades can be drawn in axially and blown radially outwardly between air channels () formed between them. One part () of each of the fan blades is joined in a fixed manner with the fan disk () via only its radially outward end section (), so that each inner end section () is swiveled radially increasingly outwardly by a centrifugal force () occurring there as rotational speeds increase, to reduce the cooling air stream. To minimize not only the speed-dependent adaptation of the cooling air quantity to the cooling needs of the machine, but the flow noises as well, preferably only every second fan blade () is provided with an inner end section () capable of being swiveled outwardly by centrifugal force (), while the other, adjacent, first fan blades () are rigid along their entire length and are connected to the fan disk () in a fixed manner.

Fan impeller for electrical machines

An electrical machine with a rotor ( ), in particular a claw pole rotor, is proposed. The rotor ( ) has an exciter system of electrically excited individual poles in the rotor ( ), in the form of electromagnetically excited poles ( ) and counterpart poles ( ). A pole gap closure ( ) is placed between the poles ( ) and counterpart poles ( ), which alternate on the circumference of the rotor ( ), and at least partly fills the open spaces. The pole gap closure ( ) is characterized in that it is braced by at least one of its axial end regions ( ), via projections ( ), on pole roots ( ).

Electrical machine

A belt drive of an electrical machine has a belt pulley arranged on a driving end of a machine shaft, a coupling connecting the drive pulley with the machine shaft, the coupling having at least one elastic coupling part provided between a driving side and a driven side of the coupling, a mounting part having a bearing pin and mountable on a machine aggregate which is connected with the electrical machine, a drive belt connecting the mounting part with the machine aggregate, and an inner bearing. The belt pulley in order to take up belt pull forces, is mounted through the inner bearing on the bearing pin of the mounting part which is mountable on the machine aggregate through the drive belt.

Growing community of inventors

Lampertheim, Germany

Hans-Joachim Lutz