| 摘要 |
PURPOSE:To realize performance of minute adjustment of an axial gap between element for minute adjustment and bottom of a base plate by pressing said element, after its plastic deformation in axial direction, uniformly into a guide groove provided on the end face of a volute side plate for a scroll. CONSTITUTION:Each volute side plate 101, 201 of a fixed scroll 1 and a rocking scroll 2 is formed projectingly from base plate faces 102, 202 respectively. An element 6 for minute adjustment with volute similar to that of the volute side plates 101, 201 is formed along end faces of said side plates 101, 201. Since the element 6 for minute adjustment undergoes plastic deformation in the axial direction of the volute at the time of its being fitted in the groove 5, the gap between each end face of the adjustment element 6 and each bottom face of base plates 102, 202 corresponding thereto can be adjusted minutely. Accordingly, dispersion of precision of constitution is excluded and the minute gap can be adjusted to the required minimum.
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