Shoes for operatively connecting a swash-plate with the compression pistons of a swash-plate type compressor are made from a novel Cu-based alloy. Improved shoes are characterized by a combination of high heat conductivity and excellent wear resistance properties particularly when subjected to a lub
Shoes for operatively connecting a swash-plate with the compression pistons of a swash-plate type compressor are made from a novel Cu-based alloy. Improved shoes are characterized by a combination of high heat conductivity and excellent wear resistance properties particularly when subjected to a lubricating condition so severe that no lubricating oil is supplied to the surface of the shoes at the initial period of the compressor operation. Phosphorus and elements of C group (Pb and/or Sn), as well as elements of A group (Mn and Si) and/or B group (the IVb and VIb groups of the periodic table), are added in predetermined amounts to the Cu-based alloy, so that the properties mentioned above are simultaneously obtained. The compressor according to the present invention can be reliably employed, without the occurrence of seizure over a long operational period for air-conditioning vehicles, in which the sliding condition of the shoes is drastically varied with the rotation of the engine.
대표청구항▼
A swash plate type compressor for air-conditioning vehicles, wherein a lubricating oil is supplied in said compressor in the state of a gaseous mixture with a refrigerant gas, said compressor comprising a cylinder block, a swash plate rotatably mounted in said cylinder block and supported by a rotat
A swash plate type compressor for air-conditioning vehicles, wherein a lubricating oil is supplied in said compressor in the state of a gaseous mixture with a refrigerant gas, said compressor comprising a cylinder block, a swash plate rotatably mounted in said cylinder block and supported by a rotating drive shaft, at least one piston slidably retained within said cylinder block, and shoes mounted on said swash plate and retained by ball bearings, said ball bearings being operatively connected with said piston, wherein said swash plate reciprocates, by its rotation, at least one piston via said shoes and ball bearings, wherein said shoes are made of a copper-based alloy comprising from 0.5 to 8% of manganese, from 0.1 to 4% of silicon, from 0.5 to 15% of lead and from 0.1 to 1.5% of phosphorus, the balance being copper. A swash-plate type compressor, comprising a cylinder block, a swash plate rotatably mounted in said cylinder block and supported by a rotating drive shaft, at least one piston slidably retained within said cylinder block, and shoes mounted on said swash plate and retained by ball bearings, said ball bearings being operatively connected with said piston, wherein said swash plate reciprocates, by its rotation, at least one piston via said shoes and ball bearings, wherein said shoes are made of a copper-based alloy comprising not more than 1% but more than 0% of molybdenum, from 0.5 to 15% of lead, less than 5% but more than 0% of tin, and not more than 1.5% of phosphorus, the balance being copper.
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