JPS6266284U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the central part of the scroll compressor according to the present invention, FIG. 2 is a cross-sectional view taken along the line X--X of FIG. 1,
Fig. 3 is a sectional view taken along the line Y-Y in Fig. 1, Fig. 4 is an enlarged exploded perspective view of the fixed ring, anti-rotation ring and movable scroll member, and Fig. 5 is a cross-sectional view of the anti-rotation ring and the boss portion of the movable scroll member. 6 is a front view showing another example of the anti-rotation ring, FIG. 7 is a sectional view showing another example of the present invention, and FIG. 8 is an enlarged perspective view of the anti-rotation ring. FIG. 9 is a perspective view showing a conventional example, FIG. 10 is a front view showing the positional relationship between the anti-rotation ring and the boss portion of the movable scroll member, and FIG. 11 is a perspective view showing another conventional example. Center housing…1, rear housing…1c
, front housing...2, drive shaft...4, eccentric shaft...5, movable scroll member...7, substrate...7a, boss part...7b, spiral part...7c, guide surface...7d,
Sliding surface…7e, fixing ring…8, guide surface…8a
, Pressure-receiving sliding contact surface...8c, Anti-rotation ring...9,14
, sliding surface...9a, 9b, 14a, 14b, insertion hole...9c, 14c, pressure receiving sliding contact surface...9d, 14d
, sliding surface...9e, 14e, fixed scroll member...
11, Key...15, 16, Guide surface...15a, 1
6a, Interval...l1, l2.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A spiral portion of a fixed scroll member and a spiral portion of a movable scroll member are eccentrically engaged with each other, and a pair of parallel guide surfaces provided on a fixed ring side installed in a housing, A pair of parallel sliding surfaces formed on an annular anti-rotation ring are slidably engaged, and the sliding surface is attached to the anti-rotation ring with respect to a pair of parallel guide surfaces provided on the back surface of the substrate of the movable scroll member. Another pair of parallel sliding surfaces formed to be orthogonal to each other are slidably engaged, and the boss portion of the movable scroll member, which is fitted so as to be relatively rotatable to the eccentric shaft fixed to the drive shaft, is prevented from rotating. It is passed through the insertion hole of the ring, and when the movable scroll member is rotated by the eccentric shaft, the spiral portion of the movable scroll member is caused to revolve and formed between the two spiral portions while preventing the movable scroll member from rotating. In a scroll compressor configured to move a closed compression chamber toward the center while reducing the volume and discharge compressed fluid from the center, the shape of the insertion hole of the anti-rotation ring is different from that of the boss. An anti-rotation ring for a scroll compressor formed into a substantially elongated oval shape so as to surround a locus of relative movement with the anti-rotation ring. 2. The anti-rotation ring has an approximately rectangular outer shape, and the distance between the pair of sliding surfaces that come into sliding contact with the guide surface of the movable scroll member is shorter than the distance between the pair of sliding surfaces that come into sliding contact with the guide surface of the fixed ring. A rotation prevention ring for a scroll compressor according to claim 1, which is formed as a utility model.