JPS6117452U

JPS6117452U - piston

Info

Publication number: JPS6117452U
Application number: JP10333684U
Authority: JP
Inventors: 与志彦伊藤; 正衛大堀
Original assignee: トヨタ自動車株式会社
Priority date: 1984-07-09
Filing date: 1984-07-09
Publication date: 1986-01-31

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、本考案の第１実施例によるピストンの正面図
、第２図は、第１図のピストンの溝形状を示す断面図、
第３図は、第２図とは別タイプの溝形状を示す断面図、
第４図は、第１図のピストンの条痕の形状を示す断面図
、第５図は、本考案の第２実施例によるピストンの正面
図、第６図は、本考案の第３実施例によるピストンの正
面図、第７図は、本実施例のピストンの効果を示す実験
データ図である。１・・・ピストン、３・・・スカート部、５・・・ピン
ボス部、１０，１１，１２，１３，１
５，１６・・・条痕面の起伏により形成される溝、
１１ｂ・・・支え面。1 is a front view of a piston according to a first embodiment of the present invention, FIG. 2 is a sectional view showing the groove shape of the piston of FIG. 1,
FIG. 3 is a sectional view showing a groove shape of a different type from that in FIG.
FIG. 4 is a cross-sectional view showing the shape of the grooves on the piston shown in FIG. 1, FIG. 5 is a front view of the piston according to the second embodiment of the present invention, and FIG. 6 is a third embodiment of the present invention. FIG. 7 is a front view of the piston according to the present invention, and is an experimental data diagram showing the effect of the piston of this example. DESCRIPTION OF SYMBOLS 1... Piston, 3... Skirt part, 5... Pin boss part, 10, 11, 12, 13, 1
5, 16... Grooves formed by the undulations of the striation surface;
11b...Supporting surface.

Claims

[Scope of utility model registration request]

In a piston with grooves on the sliding surface of the skirt,
The striation surface is formed into a plateau-like support surface, and the support surface is distributed in a band-like manner along the circumferential direction to form periodic irregularities in the sliding direction of the piston, and includes pin points on the skirt portion. A piston characterized in that the width of the groove passing through the circumferential region is larger than the width of the groove in other parts.