JPH0338456U

JPH0338456U -

Info

Publication number: JPH0338456U
Application number: JP9859289U
Authority: JP
Priority date: 1989-08-24
Filing date: 1989-08-24
Publication date: 1991-04-15
Anticipated expiration: 2004-08-24
Also published as: JPH0721966Y2

Description

[Brief explanation of the drawing]

第１〜４図は本考案の一実施例を示し、第１図
はガイド棒を備えたスペーサエキスパンダとサイ
ドレールを組み込んだピストンのオイルリング溝
部分の断面図、第２図はガイド棒を備えたスペー
サエキスパンダの合口付近を示す平面図、第３図
はガイド棒を備えたスペーサエキスパンダの断面
図、第４図はスペーサエキスパンダの素材の一部
分を示す平面図、第５〜７図はガイド棒の円周方
向の移動防止用の別の係止例を示すもので、ガイ
ド棒を備えたスペーサエキスパンダの合口付近を
示す平面図、第８〜１６図はガイド棒とスペーサ
エキスパンダの別の断面形状例を示すもので、ガ
イド棒を備えたスペーサエキスパンダの断面図で
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、１０，１１，３０，３１，３３，３４，３
６，３７，３９，４０，４２，４３，４５，４６
，４８，４９，５１，５２，５４……ガイド溝、
１３，３２，３５，３８，４１，４４，４７，５
０，５３，５５……ガイド棒、１４……係止部、
１５……ピストン、１６……オイルリング溝、１
７，１８……合口端部、１９，２０……サイドレ
ール、２１……シリンダ。 Figures 1 to 4 show an embodiment of the present invention; Figure 1 is a sectional view of the oil ring groove portion of a piston incorporating a spacer expander and side rail equipped with a guide rod; FIG. 3 is a sectional view of the spacer expander equipped with a guide rod; FIG. 4 is a plan view showing a part of the material of the spacer expander; FIGS. 5 to 7 1 shows another example of locking for preventing movement of the guide rod in the circumferential direction. FIGS. It is a sectional view of a spacer expander provided with a guide rod, showing another example of the 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, 30, 31, 33, 34, 3
6, 37, 39, 40, 42, 43, 45, 46
, 48, 49, 51, 52, 54... guide groove,
13, 32, 35, 38, 41, 44, 47, 5
0,53,55... Guide rod, 14... Locking part,
15... Piston, 16... Oil ring groove, 1
7, 18...Abutment end, 19, 20...Side rail, 21...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 of a combination oil ring having a pair of upright side rail pressing pieces at the inner peripheral end of the lower piece and having a large number of oil holes in the circumferential direction, at least the upper piece and the lower piece A combination characterized in that a guide groove is provided on one inner surface, and a guide rod that is prevented from falling out radially inward in the guide groove is inserted between the upper piece and the lower piece so as to straddle the abutment. Structure that prevents the oil ring spacer expander from overlapping. (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 the spacer expander having a substantially U-shaped cross section for a combination oil ring, the spacer expander is provided with a side rail pressing piece that stands upright, and is provided with a large number of oil holes in the circumferential direction. A combination oil ring characterized in that a guide groove is provided in the guide groove, and a guide rod that is prevented from falling out inward in the radial direction is inserted between the upper piece and the lower piece and is provided so as to straddle the abutment. Structure that prevents spacer expander joints from overlapping. (3) The abutment of the spacer expander of the combination oil ring according to claim 1 or 2, characterized in that the guide rod is provided with a locking portion with the spacer expander for preventing movement in the circumferential direction. Overlap prevention structure.