Title:
MOTOR, FAN, ELECTRIC VACUUM CLEANER, AND HAND DRYING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/077716
Kind Code:
A1
Abstract:
This motor is provided with a rotor having a plurality of magnetic poles and a stator disposed outside the rotor in the radial direction and having the same number of teeth as the number of magnetic poles. Each of the teeth has: a first side portion that is the end edge in a first direction of the circumferential direction; a second side portion that is an end edge in a second direction opposite to the first direction; and a tooth end facing the rotor. Each of the teeth unexceptionally has a first projection portion and a second projection portion on the tooth end side, said first projection portion projecting from the first side portion in the first direction, said second projection portion projecting from the second side portion in the second direction. The tooth end has a first end in the first direction and a second end in the second direction, wherein the distance G2 between the second end and the rotor is wider than the distance G1 between the first end and the rotor. When the line orthogonal to a radial direction line at an intermediate position between the first side portion and the second side portion and passing through the rotational axis is defined as a reference line, the distance D1 from the reference line to the boundary between the first projection portion and the first side portion is longer than the distance D2 from the reference line to the boundary between the second projection portion and the second side portion.
Inventors:
TSUCHIDA KAZUCHIKA (JP)
Application Number:
PCT/JP2017/037811
Publication Date:
April 25, 2019
Filing Date:
October 19, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K1/14
Foreign References:
| JPH1023690A | 1998-01-23 | |||
| JP2017022972A | 2017-01-26 | |||
| JPH1198720A | 1999-04-09 | |||
| JPH1118327A | 1999-01-22 | |||
| JP2000092755A | 2000-03-31 | |||
| JPH0847192A | 1996-02-16 | |||
| JP2013121271A | 2013-06-17 | |||
| JPH1118327A | 1999-01-22 |
Other References:
See also references of EP 3700061A4
Attorney, Agent or Firm:
MAEDA Minoru et al. (JP)
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