(19)
(11) EP 1 074 737 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.03.2003 Bulletin 2003/11

(43) Date of publication A2:
07.02.2001 Bulletin 2001/06

(21) Application number: 00114021.9

(22) Date of filing: 04.07.2000
(51) International Patent Classification (IPC)7: F04B 27/08, F04B 39/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 06.08.1999 JP 22316799

(71) Applicant: Kabushiki Kaisha Toyota Jidoshokki
Kariya-shi, Aichi-ken (JP)

(72) Inventors:
  • Sugiura, Manabu
    Kariya-shi, Aichi-ken 448-8671 (JP)
  • Takenaka, Kenji
    Kariya-shi, Aichi-ken 448-8671 (JP)
  • Iwama, Kazuaki
    Kariya-shi, Aichi-ken 448-8671 (JP)

(74) Representative: Hoeger, Stellrecht & Partner 
Uhlandstrasse 14 c
70182 Stuttgart
70182 Stuttgart (DE)

   


(54) Lubrication layer of piston seat of a swash-plate refrigerant compressor


(57) A single-head swash-plate refrigerant compressor of fixed displacement type is disclosed which can prevent lock-up due to burning between the spherical seat surface of the pistons and the spherical surface of the shoes and prevent plastic deformation of the pistons. A lubrication layer 6b coated with tin by electroless plating is formed between the spherical seat surface 6a of the piston 6 and the spherical surface 8a of the shoe 8 in order to improve the slidability therebetween.






Search report