JPS61190066U

JPS61190066U -

Info

Publication number: JPS61190066U
Application number: JP7352285U
Authority: JP
Priority date: 1985-05-20
Filing date: 1985-05-20
Publication date: 1986-11-27

Description

[Brief explanation of the drawing]

第１図は、本考案の組合せオイルリングをピス
トンのオイルリング溝に装着した状態を示す断面
図、第２図は本考案の組合せオイルリングのスペ
ーサーエキスパンダの一実施例を示す部分的切欠
斜視図、第３図は従来の組合せオイルリングのス
ペーサーエキスパンダの部分的切欠斜視図、第４
図は従来の組合せオイルリングをピストンのオイ
ルリング溝に装着した状態を示す断面図である。図における符号は、１…組合せオイルリング、
２…スペーサーエキスパンダ、２１…内側凸部、
２２…外側凸部、２１１…突起、２１２…突片部
、２１３…受圧面、３…サイドレール、４…シリ
ンダ内壁、５…サイドレールの内、外周面、６…
ピストンをそれぞれ示す。 Fig. 1 is a cross-sectional view showing the combined oil ring of the present invention installed in the oil ring groove of the piston, and Fig. 2 is a partially cutaway perspective view showing an embodiment of the spacer expander of the combined oil ring of the present invention. Figure 3 is a partially cutaway perspective view of a spacer expander of a conventional combination oil ring;
The figure is a sectional view showing a state in which a conventional combination oil ring is installed in an oil ring groove of a piston. The symbols in the diagram are 1...Combination oil ring,
2... Spacer expander, 21... Inner convex part,
22...Outer convex portion, 211...Protrusion, 212...Protrusion piece, 213...Pressure receiving surface, 3...Side rail, 4...Cylinder inner wall, 5...Inner and outer peripheral surface of side rail, 6...
Each piston is shown.

Claims

[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. A projection is provided integrally with the upper and lower edges of the inner convex portion in the axial direction, and a pressure receiving surface is provided integrally with the upper and lower edges of the outer convex portion in the axial direction. In a combination oil ring consisting of a spacer expander and a pair of side rails disposed above and below the spacer expander, an inner convex portion of the spacer expander has a notch extending axially in one of the upper and lower protrusions. At least one protrusion part is formed, the protrusion part having a part, supported by one side of the inner convex part, and bent in the outer circumferential direction from the inner convex part, and integrated with the protrusion part at the axial tip of the protrusion part. A combination oil ring characterized by having a pressure receiving surface. (2) In the above combination oil ring, the pressure receiving surface of the projecting piece and the pressure receiving surfaces of the upper and lower axial ends of the outer convex portion are located on the same circumference, The combination oil ring described in item 1. (3) Claim 1 of the above-mentioned utility model registration claim, characterized in that in the combination oil ring, projecting pieces having the pressure-receiving surface are alternately provided on the inner convex portion extending over the entire circumference of the spacer expander. Combination oil ring as described.