| 摘要 |
PROBLEM TO BE SOLVED: To realize reduced attachment space in a casing and improvement in working efficiency in assembly and the like by using a plurality of ball coupling mechanisms. SOLUTION: A plurality of ball coupling mechanisms 15 are disposed between a casing 1 and a rear side of an orbiting scroll 4. Each of the ball coupling mechanisms 15 includes first and second thrust receivers 16, 18 (reception plates 17, 19), a sphere 20, and a cylindrical ring 21 and the like. A thrust load to be applied to an end plate 4A of the orbiting scroll 4 is received between the first and second thrust receivers 16, 18 (reception plates 17, 19) and the sphere 20. The cylindrical ring 21 disposed between the first and second thrust receivers 16, 18 displays a so-called rotation preventing effect in such a manner that its outer peripheral surface makes a rolling contact with inner peripheral surfaces of cylindrical portions 16A, 18A in association with an orbiting motion of the orbiting scroll 4. COPYRIGHT: (C)2009,JPO&INPIT
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