Patent · US Active

Device for fixing magnets

US9124164B2 · kind B2 · utility

2Cited by

22References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Christa Bauch · Bornsteiner Straße, DE
Martin Schulz · Elsdorf, DE
Oliver Eckert · Cowbridge, GB
Ngoc-Thach Nguyen · Bornsteiner Straße, DE
Christian Dayan · Ludwigsburg, DE

Key dates

Filing date	Oct 26, 2009
Grant date	Sep 1, 2015
Priority date	—
Expiry date	Mar 18, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02K21/044
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to an electric machine (10), in particular a generator for a motor vehicle, comprising an exciter system composed of a plurality of electrically excited salient poles. The salient poles can be designed within the stator (16) or rotor (20) in the form of electromagnetically excited poles (22, 23; 24, 25) which are axially and radially oriented on the periphery and are alternatively polarized in the peripheral direction. In order to improve performance and reduce the magnetic leakage flux, permanent magnets (66), which are secured by means of a magnetically non-excitable holding element (60), are inserted into interstices (74) between the alternating poles (24, 25). The holding element (60) is bilaterally mounted in pole grooves (92, 94), is radially, axially, and tangentially resilient, and has a wave-shaped (62) and/or bead-shaped (76, 78; 86) profile.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.