JPH0330660U

JPH0330660U -

Info

Publication number: JPH0330660U
Application number: JP9154989U
Authority: JP
Priority date: 1989-08-03
Filing date: 1989-08-03
Publication date: 1991-03-26

Description

[Brief explanation of the drawing]

第１図及び第６図はガイド棒を装着した本考案
に係る実施例のスペーサエキスパンダの合口部付
近を示す斜視図、第２図及び第７図はスペーサエ
キスパンダの合口付近の拡大斜視図、第３図はサ
イドレールと第１図のスペーサエキスパンダを組
み込んだピストンのオイルリングの溝部分の断面
図、第４図及び第８図はスペーサエキスパンダの
素材を示す平面図、第５図はガイド棒の平面図、
第９図はスペーサエキスパンダの別の断面形状例
を示す図である。１……スペーサエキスパンダ、２……上部片、
３……下部片、４……連結部片、５，６……サイ
ドレール押圧片、７……オイル孔、８，９……切
欠部、１０，１１……合口端部、１２……ガイド
片、１４……ガイド棒、１５……係止部、１６…
…ピストン、１７……オイルリング溝、１８，１
９……サイドレール、２０……シリンダ。 1 and 6 are perspective views showing the vicinity of the abutment of a spacer expander according to an embodiment of the present invention with a guide rod attached, and FIGS. 2 and 7 are enlarged perspective views of the vicinity of the abutment of the spacer expander. , Fig. 3 is a sectional view of the groove portion of the oil ring of the piston incorporating the side rail and the spacer expander shown in Fig. 1, Figs. 4 and 8 are plan views showing the material of the spacer expander, and Fig. 5 is a plan view of the guide rod,
FIG. 9 is a diagram showing another example of the cross-sectional shape of the spacer expander. 1... Spacer expander, 2... Upper piece,
3... Lower piece, 4... Connecting piece, 5, 6... Side rail pressing piece, 7... Oil hole, 8, 9... Notch, 10, 11... Joint end, 12... Guide Piece, 14... Guide rod, 15... Locking part, 16...
...Piston, 17...Oil ring groove, 18,1
9...Side rail, 20...Cylinder.

Claims

[Claims for Utility Model Registration] (1) A pair of upper and lower pieces extending in the circumferential direction are arranged apart from each other in the axial direction, their outer peripheral ends are connected by a connecting piece, and the upper piece In a spacer expander having a combination oil ring having a pair of upright side rail pressing pieces at the inner circumferential end of the lower piece and having a large number of oil holes in the circumferential direction, the spacer expander has a generally U-shaped cross section; A guide piece is provided at both ends to span between the upper end and the lower end of the oil hole, and a guide rod that is inserted between these guide pieces and the connecting piece is provided to straddle the abutment. A combination oil ring spacer expander abutment overlap prevention structure featuring: (2) A pair of upper and lower pieces extending in the circumferential direction are arranged apart from each other in the axial direction, the outer peripheral ends of these pieces are connected by a connecting piece, and a pair of upper pieces and lower pieces are arranged at the inner peripheral ends of the upper piece and the lower piece. In a spacer expander having a substantially U-shaped cross section of a combination oil ring and having a side rail pressing piece that stands upright, and having a large number of oil holes in the circumferential direction, the oil hole portions are formed on both sides of the abutment of the spacer expander. A guide piece is provided that extends from at least one of the upper end portion and the lower end portion and is located inwardly than the connecting piece, and a guide rod that is inserted between these guide pieces and the connecting piece is straddled across the abutment. A structure for preventing overlapping of a spacer expander of a combination oil ring, which is characterized by being provided with a spacer expander.