Patent · US Expired

Stator for an electrical machine

US7282830B2 · kind B2 · utility

6Cited by

8References

3Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Harrer · Gerlingen, DE
Eberhard Rau · Ditzingen, DE
Thomas Berger · Ditzingen, DE

Key dates

Filing date	Sep 22, 2003
Grant date	Oct 16, 2007
Priority date	—
Expiry date	Sep 22, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49009
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A stator for an electrical machine is proposed that has a stator winding (45) that is held by a stator core (10) that is formed into an annular shape. The stator core (10) has grooves (14) and teeth (13) on its radially inwardly oriented circumference. The stator core (10) is composed of layered stator sheet metal lamellae (11), the direction of the layers defining an axial direction (a). It is provided that at least a first stator sheet metal lamella (20) has a higher flexural strength than second stator sheet metal lamellae (21), the at least one first stator sheet metal lamella (20) having a thickness (dLE) in the axial direction (a) that does not exceed 4 mm.

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