Title:
電動モータ及び電動コンプレッサ
Document Type and Number:
Japanese Patent JP4036148
Kind Code:
B2
Abstract:
An electric motor includes a housing (11a) and a circular stator (12). The housing has an inner circumferential surface (25a). The housing also has a first predetermined thermal expansion coefficient. The housing further has an elastic part (25d). The stator core (16) is pressed to an inside of the housing by tight fit, The stator core has an outer circumferential surface (16c). The stator core also has a second predetermined thermal expansion coefficient that is different from the first predetermined thermal expansion coefficient. A void (32) is defined between the inner circumferential surface and the outer circumferential surface so as to prevent the inner and the outer circumferential surfaces from contacting each other in a circular region. When the housing and the stator core expand or shrink so as to tightly fit each other due to a differential between the first and second predetermined thermal expansion coefficients, the elastic part (25d) corresponding to the void (32) is elastically deformed.
Inventors:
Kazuya Kimura
Hiroyuki Motonami
Kazuhiro Kuroki
Ken Mizuto
Yoshikazu Fukuya
Hiroyuki Motonami
Kazuhiro Kuroki
Ken Mizuto
Yoshikazu Fukuya
Application Number:
JP2003189687A
Publication Date:
January 23, 2008
Filing Date:
July 01, 2003
Export Citation:
Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
International Classes:
F04B39/00; H02K5/04; F04C23/00; F04C28/28; F04C29/04; H02K1/18; F04C18/02
Domestic Patent References:
| JP2000224787A | ||||
| JP8242557A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda