Title:
STATOR, STATOR MANUFACTURING METHOD, AXIAL GAP MOTOR, AND ELECTRIC PUMP
Document Type and Number:
WIPO Patent Application WO/2018/025428
Kind Code:
A1
Abstract:
The purpose of the invention is to provide a novel stator in which no gap is produced between adjacent unit cores and furthermore deterioration in magnetic characteristics due to bending stress can be suppressed, a method for manufacturing the stator, an axial gap motor using the stator, and an electric pump using the axial gap motor.
Continuous thin sheet-shaped electrical steel strips (23) corresponding to at least the circumference of a core (22) formed in a ring shape are formed. The electrical steel strips (23) are laminated in the radial direction to form the core, and the outer peripheral surfaces of unit core portions (24) formed in the core and the outer peripheral surfaces of core-back portions (25) formed in the core are formed in a plane shape. In this way, no gap is produced due to the fact that the unit cores are continuously formed. The outer peripheral surfaces of the unit core portions of the core and the outer peripheral surfaces of the core-back portions are formed in the plane shape, whereby bending stress is mitigated, and deterioration in magnetic characteristics can be suppressed.
Inventors:
KAWAMATA SHOUICHI (JP)
ENOMOTO YUJI (JP)
TAKARAI KENYA (JP)
NOGUCHI KUNITO (JP)
ENOMOTO YUJI (JP)
TAKARAI KENYA (JP)
NOGUCHI KUNITO (JP)
Application Number:
PCT/JP2017/004291
Publication Date:
February 08, 2018
Filing Date:
February 07, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H02K1/18; H02K7/14; H02K15/02; H02K21/24
Domestic Patent References:
| WO2015170518A1 | 2015-11-12 |
Foreign References:
| JP2016077067A | 2016-05-12 | |||
| JP2004312858A | 2004-11-04 | |||
| JP2008099453A | 2008-04-24 | |||
| JPS60162949U | 1985-10-29 | |||
| JP2011045187A | 2011-03-03 | |||
| JP2006166679A | 2006-06-22 | |||
| JPS5951219B2 | 1984-12-12 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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