| 摘要 |
PROBLEM TO BE SOLVED: To use a simplified structure for materializing a structure having excellent lubricity, low sliding surface pressure and reduced friction resistance of end plate surfaces. SOLUTION: On the end plate surface 105 of a fixed scroll 100, a closed oil supply groove is formed with one end communicating with an intermediate pressurized space and the other end located near a lap portion and not communicating with an intake chamber. An outer diameter of the end plate surface of a revolving scroll 200 is arranged to be smaller than an outer diameter of a board 201 of the revolving scroll and also smaller than a value obtained by adding a diameter of revolution to an outer diameter of the end plate surface of the fixed scroll. A surface of the board on the outer side of the end plate surface is made lower to some extent than the end plate surface. COPYRIGHT: (C)2008,JPO&INPIT
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