Guide assembly and guide shoe for a variable angle wobble plate

Pumps – Three or more cylinders arranged in parallel – radial – or...

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Details

74 60, F04B 114

Patent

active

048939943

ABSTRACT:
An improved guide assembly, including a guide bearing and a pair of guide shoes, for a variable displacement wobble plate compressor is disclosed. The guide shoes include a body portion and positioning lugs that extend outwardly therefrom and arcuately around the guide bearing. The body portion engages the bearing and positioning lugs terminate in bearing edge surfaces. The lugs extend around the guide bearing such that said bearing surfaces are in close juxtaposition for load bearing contact. During operation, as compressor loading increases, the loading on the guide shoes from the wobble plate increases as well. This higher loading, and the tendency for uneven loading, brings the edge surfaces of the positioning lugs into load bearing contact. This serves to equalize the loading and substantially prevent relative guide shoe motion and frictional line contact with the guide rod. Thus, undesirable excess wear due to frictional contact of the guide shoes and the guide rod is avoided. The lugs are preferably 35%-45% of the width of the body portion.

REFERENCES:
patent: 4178136 (1979-12-01), Reid et al.
patent: 4815943 (1989-03-01), Kawashima et al.

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