Title:
ROTOR ARRANGEMENT FOR AN ELECTRICAL MACHINE
Document Type and Number:
WIPO Patent Application WO/2014/121977
Kind Code:
A3
Abstract:
The invention relates to a rotor arrangement (4) for a drive motor (2) of a bicycle, comprising: - a cylindrical magnetic return path element (12); and - permanent magnets (8) which are arranged on the magnetic return path element (12) with a radial direction of polarity in the circumferential direction in order to form the rotor poles (14), characterized in that the magnetic return path element (12) has recesses (13) which are spaced apart from one another and in which the permanent magnets (8) are arranged, so that rotor poles (14) are formed by a region of the magnetic return path element (12), which region is situated between the recesses (13), and the permanent magnets (8).
Inventors:
CAO YANFEI (CN)
EVANS STEVEN ANDREW (DE)
CHENG FENGMEI (DE)
MARTIN NORBERT (DE)
EVANS STEVEN ANDREW (DE)
CHENG FENGMEI (DE)
MARTIN NORBERT (DE)
Application Number:
PCT/EP2014/050436
Publication Date:
April 02, 2015
Filing Date:
January 13, 2014
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
International Classes:
H02K1/27; H02K7/00
Foreign References:
| DE10219332A1 | 2002-12-12 | |||
| JPH11341719A | 1999-12-10 | |||
| EP1104077A2 | 2001-05-30 |
Attorney, Agent or Firm:
ROBERT BOSCH GMBH (Stuttgart, DE)
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