Variable capacity swash plate type refrigerant compressor having a double fulcrum hinge mechanism
A variable capacity single headed piston swash plate type refrigerant compressor is provided with a double fulcrum hinge mechanism having a pair of hinges for providing a pivotal connection between a rotary support element of a drive shaft and a swash plate assembly, causing reciprocation of a plurality of single headed pistons in cylinder bores for compressing a refrigerant gas. The pair of hinges of the double fulcrum hinge mechanism cooperate to absorb reaction forces of the compression and suction of the refrigerant gas acting from the pistons on the swash plate assembly to thereby prevent application of a local load to a sleeve element on which the swash plate assembly is turnably mounted.
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Claims
3. A variable capacity single headed piston swash plate type compressor according to claim 1, wherein said pair of hinges of said hinge means comprises:
- a pair of support arms extended toward said swash plate assembly from said rotary support element;
- a pair of guide pins arranged in parallel with each other, and slidably pivoted on said pair of support arms, said pair of guide pins being arranged to be symmetrical with respect to said plane.
4. A variable capacity single headed piston swash plate type compressor according to claim 3, wherein said pair of guide pins of said pair of hinges of said hinge means are pivotally supported on said pair of support arms via turnable ball elements received in spherical race elements, said pair of guide pins passing through said turnable ball elements.
5. A variable capacity single headed piston swash plate type compressor according to claim 1, wherein said pair of hinges of said hinge means comprises:
- a pair of support arms extended toward said swash plate assembly from said rotary support element;
- a pair of guide pins arranged to be coaxial with each other, and slidably fitted in said pair of support arms, said pair of guide pins being arranged to be symmetrical with respect to said plane.
6. A variable capacity single headed piston swash plate type compressor according to claim 5, wherein said pair of guide pins of said pair of hinges of said hinge means are pivotally and slidably fitted in a pair of elongated through-bores formed in said pair of support arms.
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Type: Grant
Filed: Aug 8, 1996
Date of Patent: Aug 25, 1998
Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho (Kariya)
Inventors: Kazuya Kimura (Kariya), Hiroaki Kayukawa (Kariya)
Primary Examiner: Charles G. Freay
Assistant Examiner: Peter G. Korytnyk
Law Firm: Brooks Haidt Haffner and Delahunty
Application Number: 8/693,483
International Classification: F04B 112;