(19)
(11) EP 1 612 420 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.11.2006 Bulletin 2006/47

(43) Date of publication A2:
04.01.2006 Bulletin 2006/01

(21) Application number: 05013509.4

(22) Date of filing: 22.06.2005
(51) International Patent Classification (IPC): 
F04B 27/18(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR LV MK YU

(30) Priority: 28.06.2004 JP 2004190005
31.08.2004 JP 2004253450
04.10.2004 JP 2004291724

(71) Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Kariya-shi, Aichi-ken (JP)

(72) Inventors:
  • Umemura, Satoshi
    Kariya-shi, Aichi-ken (JP)
  • Kawaguchi, Masahiro
    Kariya-shi, Aichi-ken (JP)
  • Ota, Masaki
    Kariya-shi, Aichi-ken (JP)
  • Hirose, Tatsuya
    Kariya-shi, Aichi-ken (JP)
  • Hashimoto, Yuji
    Kariya-shi, Aichi-ken (JP)
  • Fukanuma, Tetsuhiko
    Kariya-shi, Aichi-ken (JP)

(74) Representative: TBK-Patent 
Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) Displacement control valve for variable displacement compressor


(57) A displacement control valve for a variable displacement compressor includes a first valve hole (36) forming a part of a supply passage and a second valve hole (37) forming a part of a discharge passage. Displacement of a reciprocating body is transmitted to each of first (39) and second (40) valve bodies so that each valve body opens or closes the corresponding valve hole. When the reciprocating body is within a predetermined displacement range, a double closing state occurs, in which the first valve body closes the first valve hole (36) and the second valve hole closes the second valve hole (37). When the reciprocating body is out of the displacement range, a single closing state occurs. Therefore, the control valve prevents the first valve hole (36) from opening concurrently with the second valve hole (37).







Search report