Title:
ELECTRIC POWER STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/088919
Kind Code:
A1
Abstract:
A rack-assist type electric power steering device (10) uses a motor (1) as a drive
source. The stator (11) of the motor (1) includes stator cores (13) having ring-shaped
yoke parts (16) and teeth (17) projecting from the yoke parts (16) in the inner
direction. In the stator core (13), the ratio (Wy : Wt) of the width dimension (Wy)
of each of the yoke parts (16) in the radial direction to the width dimension (Wt)
of each of the teeth (17) in the circumferential direction is 1 : 1.4 to 1.8. By setting
the yoke parts (16) and the teeth (17) of the stator core (13) to this value, the
stator core (13) can be set so that torque lag is mostly hard to occur in a limited
space.
More Like This:
| JP4078706 | Split coil |
| JP2007110861 | STATOR CORE STRUCTURE OF MOTOR |
Inventors:
IKENO HIROTATSU (JP)
MACHIDA EIICHI (JP)
OKUBO MASAYUKI (JP)
MACHIDA EIICHI (JP)
OKUBO MASAYUKI (JP)
Application Number:
PCT/JP2007/051671
Publication Date:
August 09, 2007
Filing Date:
February 01, 2007
Export Citation:
Assignee:
MITSUBA CORP (JP)
IKENO HIROTATSU (JP)
MACHIDA EIICHI (JP)
OKUBO MASAYUKI (JP)
IKENO HIROTATSU (JP)
MACHIDA EIICHI (JP)
OKUBO MASAYUKI (JP)
International Classes:
H02K1/14; B62D5/04; H02K1/16; H02K1/18; H02K7/06
Foreign References:
| JP2004215479A | 2004-07-29 | |||
| JPH10152058A | 1998-06-09 | |||
| JPH09149616A | 1997-06-06 | |||
| JP2001103689A | 2001-04-13 |
Attorney, Agent or Firm:
TAKANO, Yasushi (Miyamasuzaka-Toho-Estate 602 1-12-12, Shibuy, Shibuya-ku Tokyo, JP)
Download PDF: