Piston for fluid machine and manufacture thereof



PURPOSE:To hold a slide gap between a cylinder bore and a piston with high precision by providing a piston comprising a connecting part made of a metal with which a piston rod is engaged and a piston body part made of resin of which a connecting part is insert-casted. CONSTITUTION:A fluid mechanism, such as a swing swash type compressor, used in an air-conditioning device, is formed such that a piston 12 is engaged internally of a cylinder bore 11 formed in a cylinder block 10 and the piston 12 is connected to a swing plate, not shown, through a piston rod 13. In this case, the piston 12 comprises a connecting part 20 made of a metal, such as an aluminum alloy, and a piston body part 30 made of resin, such as fluororesin. A spherical part 13a of the piston rod 13 is engaged with a caulking part 22, protruded axially from a disc part 21 of the connecting part 20, by caulking, and the piston body part 30 made of resin is formed such that the connecting part 20, except a caulked part 22, is insert-casted thereof.
(57)【要約】 【目的】シリンダボアとの摺動間隙を常に高精度に維持 するとともに、軽量化された流体機械用ピストンを創出 する。 【構成】ピストンロッド13が係合される金属製連結部 20と、この連結部20を鋳ぐるむ樹脂製ピストン本体 部30とからなる。




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Cited By (10)

    Publication numberPublication dateAssigneeTitle
    CN-102734127-AOctober 17, 2012J.P.萨尔&索恩机械有限公司Piston compressor
    EP-1022463-A2July 26, 2000Kabushiki Kaisha Toyoda Jidoshokki SeisakushoPiston pour machine de déplacement de fluides
    EP-1022463-A3December 27, 2000Kabushiki Kaisha Toyoda Jidoshokki SeisakushoPiston for fluid machines
    EP-2505837-A1October 03, 2012J.P. Sauer & Sohn Maschinenbau GmbHCompresseur à piston
    JP-2003074467-AMarch 12, 2003Tokico Ltd, トキコ株式会社空気圧縮機
    JP-2007315273-ADecember 06, 2007Sanden Corp, サンデン株式会社Reciprocating type compressor
    JP-2008064115-AMarch 21, 2008Hitachi Ltd, 株式会社日立製作所Reciprocating type compressor
    US-6339984-B1January 22, 2002Kabushiki Kaisha Toyoda Jidoshokki SeisakushoPiston for fluid machines
    WO-2007037061-A1April 05, 2007Sanden Corporation揺動板式圧縮機
    WO-2010126959-A3February 24, 2011Tsc Offshore Group LimitedBiaxial alignment assembly for force delivery device