Title:
ELECTRIC MOTOR
Document Type and Number:
Japanese Patent JP2007166854
Kind Code:
A
Abstract:
To suppress the shortage of oil in a bearing 23 of a DC motor.
The motor comprises a rotor 10 composed of a rotating shaft 11, a core 12 having protruding parts 12a, and windings 13 wound on the protruding parts 12a, respectively, and a stator 20 having a case 21 for housing the rotor 10 and a bearing 23 rotatably supporting the rotating shaft 11. The rotor 10 is arranged between the core 12 and the bearing 23, and fixed to the core 12, and comprises a tube 14b where the rotating shaft 11 penetrates a hollow part. When the tube 14b contacts with the bearing, a space is formed between the windings 13 and the stator 20. Oil is applied on the side of the bearing 23 that is opposite to the tube part 14b.
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Inventors:
TAKEUCHI NORIHISA
TATEISHI SEIJI
TATEISHI SEIJI
Application Number:
JP2005363126A
Publication Date:
June 28, 2007
Filing Date:
December 16, 2005
Export Citation:
Assignee:
DENSO CORP
ASMO CO LTD
ASMO CO LTD
International Classes:
H02K23/00; F16C17/10; F16C33/10; F16C33/74; H02K3/34; H02K5/10; H02K5/167; H02K7/08
Domestic Patent References:
| JPH0767282A | 1995-03-10 | |||
| JP2001224148A | 2001-08-17 | |||
| JPS6344652U | 1988-03-25 |
Attorney, Agent or Firm:
Yoji Ito
Takahiro Miura
Fumihiro Mizuno
Takahiro Miura
Fumihiro Mizuno