| 摘要 |
A scroll type fluid machine having a driving system including a counter weight and a sub weight, in which an efficiency of an assembling operation is enhanced by simplifying an assembling structure of the driving system. In the fluid machine, a sub weight ( 17 ) is provided on a rotary shaft ( 16 ) and a counter weight ( 20 ) is provided on a driving bush ( 19 ) . The driving bush ( 19 ) is attached to the rotary shaft ( 16 ) by an attachment bolt ( 23 ) to prevent relative rotation between the rotary shaft and the driving bush. The rotary shaft ( 16 ) supported by a main bearing ( 18 ) and is driven in rotation by a motor ( 9 ), with the result that an orbiting scroll ( 4 ) performs an orbiting motion with respect to a fixed scroll ( 2 ).
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