ROTATING ELECTRIC MACHINE ROTOR - HITACHI AUTOMOTIVE SYSTEMS LTD

Title:

ROTATING ELECTRIC MACHINE ROTOR

Document Type and Number:

WIPO Patent Application WO/2020/145033

Kind Code:

A1

Abstract:

The present invention addresses the problem of reducing stress on the outer edge portion side of a rotor, said stress being caused by press-fitting a shaft.　This rotating electric machine rotor has a shaft and a rotor core, wherein the shaft is connected to the rotor core. The rotor core has: an outer edge portion housing a magnet; an inner edge portion connected to the shaft; and a rib portion internally formed with a lightening portion between the outer edge portion and the inner edge portion. The rib portion has: a through-hole formation portion connected to the outer edge portion and internally having a through-hole; and a cross-linked portion for connecting the through-hole formation portion and the inner edge portion to each other. The cross-linked portion has: a second cross-linked portion connected to the through-hole formation portion and projecting toward the outside; and a first cross-linked portion having one end connected to the inner edge portion and the other end connected to the second cross-linked portion. The cross-linked portion also has a bent portion at a position where the first cross-linked portion and the second cross-linked portion are connected to each other.

Inventors:

MIYAGI TAKUYA (JP)
TAKAHASHI TOSHIKI (JP)
FUJITA HAYATO (JP)
BABA YUICHIRO (JP)
NAKAYAMA KENJI (JP)

Application Number:

PCT/JP2019/048883

Publication Date:

July 16, 2020

Filing Date:

December 13, 2019

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

International Classes:

H02K1/28; H02K1/22; H02K1/27

Domestic Patent References:

WO2016047311A1	2016-03-31
WO2016047311A1	2016-03-31

Foreign References:

JP2017093059A	2017-05-25
JP2014158332A	2014-08-28
JPS5239102A	1977-03-26

Other References: