(19)
(11) EP 1 491 728 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.11.2005 Bulletin 2005/48

(43) Date of publication A2:
29.12.2004 Bulletin 2004/53

(21) Application number: 04014612.8

(22) Date of filing: 22.06.2004
(51) International Patent Classification (IPC)7: F01L 1/344
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 25.06.2003 JP 2003181475

(71) Applicant: AISIN SEIKI KABUSHIKI KAISHA
Kariya-shi, Aichi-ken 448-8650 (JP)

(72) Inventors:
  • Kobayashi,Masaki c/o I.P.D AISIN SEIKI KAB. KAISHA
    Kariya-shi, Aichi-ken 448-8650 (JP)
  • Eguchi, Katsuhiko c/o I.P.D AISIN SEIKI KAB KAISHA
    Kariya-shi, Aichi-ken 448-8650 (JP)
  • Ogawa, Kazumi c/o I.P.D AISIN SEIKI KAB. KAISHA
    Kariya-shi, Aichi-ken 448-8650 (JP)

(74) Representative: Kramer - Barske - Schmidtchen 
European Patent Attorneys Patenta Radeckestrasse 43
81245 München
81245 München (DE)

   


(54) Variable valve timing control device


(57) A variable valve timing control device (1) includes a housing member (3), a rotor member (2) assembled to the housing member so as to be rotatable relative thereto and including vane portions (70) each forming an advanced angle chamber (R1) and a retarded angle chamber (R2) within the housing member (3), a stopper (33a,33b) formed on the convex portion for defining a relative rotation between the housing member (3) and the rotor member (2), a lock mechanism (22,88) for restricting the relative rotation by a lock member (80), and a fluid pressure circuit for controlling an operation oil to be supplied to or discharged from the advanced angle chamber (R1), the retarded angle chamber (R2), and the lock mechanism (22,80). When the relative rotation is restricted, the lock member (80) is in contact with an inner peripheral face of the receiving hole (22) on the advanced angle side and the retarded angle side between an opening portion (22a) and a bottom portion (22b) of the receiving hole (22).






Search report