Title:
VEHICULAR ALTERNATING-CURRENT GENERATOR
Document Type and Number:
WIPO Patent Application WO/2011/121770
Kind Code:
A1
Abstract:
Disclosed is a vehicular alternating-current (AC) electric generator which includes a rundle-type rotor and a stator. The rundle-type rotor has a cylindrical portion (112a) around which a field coil is wound; first and second plate-shaped end-plate portions (112b) disposed on both axial ends of the cylindrical portion (112a) so as to be opposed to each other; a plurality of first pawl portions (112c) extending in parallel to a rotating shaft in the direction from the first end-plate portion (112b) to the second end-plate portion; and second pawl portions (112c) which extend in parallel to the rotating shaft in the direction from the second end-plate portion (112b) to the first end-plate portion and which are alternately disposed in the circumferential direction with the plurality of first pawl portions (112c). The stator is opposed to the outer circumference of the rundle-type rotor with a rotation air gap therebetween and has a laminated core around which an armature coil is wound. The first and second end-plate portions (112b) include a disk area which is continuous around the entire circumference of the rotating shaft and a plurality of projected areas which are projected outwardly from the outer circumference of the disk area and provided with the pawl portions (112c). The bottom portion of a valley area formed between the projected areas has a diameter (De) which is greater than or equal to the inner diameter (Dc) at the base of the pawl portion (112c) formed on the projected area and which is less than or equal to the outer diameter (Dr) of the pawl portion (112c).
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Inventors:
ISHIKAWA YOSHIHISA (JP)
MIYATA KENJI (JP)
KOYAMA TAKAYUKI (JP)
MIYATA KENJI (JP)
KOYAMA TAKAYUKI (JP)
Application Number:
PCT/JP2010/055899
Publication Date:
October 06, 2011
Filing Date:
March 31, 2010
Export Citation:
Assignee:
HITACHI LTD (JP)
ISHIKAWA YOSHIHISA (JP)
MIYATA KENJI (JP)
KOYAMA TAKAYUKI (JP)
ISHIKAWA YOSHIHISA (JP)
MIYATA KENJI (JP)
KOYAMA TAKAYUKI (JP)
International Classes:
H02K1/24; H02K19/24
Domestic Patent References:
| WO2002029960A1 | 2002-04-11 |
Foreign References:
| JPH11243673A | 1999-09-07 | |||
| JP2000341890A | 2000-12-08 | |||
| JPS4836312U | 1973-05-01 | |||
| JPS5698349A | 1981-08-07 | |||
| JP2005130610A | 2005-05-19 | |||
| JP2001231194A | 2001-08-24 |
Attorney, Agent or Firm:
NAGAI, Fuyuki (JP)
Fuyuki Nagai (JP)
Fuyuki Nagai (JP)
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Claims: