JPS61157148U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a combination oil ring of the present invention installed in an oil ring groove of a piston, and FIG. 2 is a partially cutaway perspective view showing an embodiment of the combination oil ring of the present invention. be. The symbols in the diagram are 1...Combination oil ring,
2... Spacer expander, 21... Inner convex part,
22...Outside convex portion, 211...Protrusion, 212...Protrusion piece portion, 3...Side rail, 4...Cylinder inner wall, 5...Side rail outer peripheral surface, 6...Piston are shown, respectively.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of an annular corrugated flat plate as a whole, the corrugations include a series of outer convex portions and a series of inner convex portions alternately, and both of these convex portions extend in the radial direction. The spacer expander is connected by a connecting member, and has projections integrally formed on the upper and lower axial edges of the inner convex portion, and a pair of side rails arranged above and below the spacer expander. In the combination oil ring, the inner convex portion of the spacer expander has a notch that extends in the axial direction on either one of the upper and lower protrusions, is supported by one side of the inner convex portion, and is supported by one side of the inner convex portion, and extends in the inner circumferential direction from the inner convex portion. A combination oil ring characterized in that it has at least one protruding piece that is bent. (2) The combination oil ring according to claim 1 of the utility model registration claim, characterized in that the spacer expander is provided with alternately bent protrusions on the inner convex portion extending over the entire circumference of the spacer expander. Combination oil ring.