JPH0475269U

JPH0475269U -

Info

Publication number: JPH0475269U
Application number: JP11948890U
Authority: JP
Priority date: 1990-11-15
Filing date: 1990-11-15
Publication date: 1992-06-30

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例のライナーへの挿入
前の形状を示す平面図、第２図は第１図のピスト
ンリングがライナーへ挿入された状態における面
圧分布図である。第３図は公知のピストンリング
を示す平面図、第４図は第３図の−断面図、
第５図は第３図の合口部を示す斜視図、第６図は
本出願人がさきに実願平１−６１４３号で提案し
たピストンリングの断面図、第７図は第６図のピ
ストンリングの加工要領を示す説明図である。１……ピストンリング、２……合口部、２ａ…
…長軸径、２ｂ……短軸径。 FIG. 1 is a plan view showing the shape of an embodiment of the present invention before it is inserted into a liner, and FIG. 2 is a surface pressure distribution diagram when the piston ring of FIG. 1 is inserted into the liner. FIG. 3 is a plan view showing a known piston ring, FIG. 4 is a sectional view taken from FIG. 3,
FIG. 5 is a perspective view showing the abutment part in FIG. 3, FIG. 6 is a sectional view of the piston ring proposed by the present applicant in Utility Application No. 1-6143, and FIG. 7 is the piston shown in FIG. 6. FIG. 3 is an explanatory diagram showing a procedure for processing a ring. 1...Piston ring, 2...Abutment, 2a...
...Major axis diameter, 2b...Short axis diameter.

Claims

[Scope of utility model registration request]

For wear-resistant piston rings with ion coating applied to the outer periphery, the outer shape of the piston ring before being inserted into the liner is defined as the short axis diameter, which passes through the center and the abutment, and the short axis diameter, which passes through the same center. A wear-resistant piston ring characterized in that it has a substantially elliptical shape in which the long axis diameter is slightly larger than the short axis diameter when the diameters perpendicular to each other are taken as the long axis diameters.