| 摘要 |
PURPOSE:To improve assembling performance and lubrication to a thrust bearing, by forming a supporting member for a movable scroll independently from a framework and forming a projection for receiving a radial bearing on an end face at the side of the movable scroll in an eccentric rotary section of a drive shaft. CONSTITUTION:A movable scroll 4 is born by an eccentric rotary section 89 of a drive shaft 6 through a radial bearing 10, and a supporting member 14 having a thrust bearing 5 for supporting a mirror board 4a of the movable scroll 4 near a central hole 14a is formed independently from a framework 2 and fixed thereto. Furthermore, a projection 9b for receiving the axial upper side of the radial bearing 10 is formed on an end face 9a at the side of the movable scroll 4 in the eccentric rotary section 89. Consequently, the eccentric rotary section 89 can be assembled without increasing the size of the movable scroll, and lubricant fed from the radial bearing 10 is dispersed through the projection 9b to the thrust bearing 5 thus realizing a reliable lubrication.
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