JPH0487945U

JPH0487945U -

Info

Publication number: JPH0487945U
Application number: JP40346590U
Authority: JP
Priority date: 1990-12-14
Filing date: 1990-12-14
Publication date: 1992-07-30

Description

[Brief explanation of the drawing]

第１図は本考案による内燃機関用ピストンの一
つの実施例を示す正面図、第２図は第１図の線
−に沿う断面図、第３図及び第４図は本考案に
よる内燃機関用ピストンの要部を拡大して示す断
面図、第５図は本考案による内燃機関用ピストン
の他の一つの実施例をその要部について示す縦断
面図である。１０……ピストン、１２……ピストン頂部、１
４……スカート部、１６，１８……ピストンリン
グ溝、２０……オイルリング溝、２１……奥壁、
２２……オイルリング、２４……ピストンピン孔
、２６……サイドカツト部、２８……隔壁、３０
……第一のオイル通路、３２……ピストン内部空
間、３４……第二のオイル通路、３６……オイル
通路。 FIG. 1 is a front view showing one embodiment of a piston for an internal combustion engine according to the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIGS. 3 and 4 are for an internal combustion engine according to the present invention. FIG. 5 is an enlarged sectional view showing the main part of the piston, and FIG. 5 is a longitudinal sectional view showing the main part of another embodiment of the piston for an internal combustion engine according to the present invention. 10... Piston, 12... Piston top, 1
4... Skirt portion, 16, 18... Piston ring groove, 20... Oil ring groove, 21... Back wall,
22... Oil ring, 24... Piston pin hole, 26... Side cut portion, 28... Partition wall, 30
...First oil passage, 32...Piston internal space, 34...Second oil passage, 36...Oil passage.

Claims

[Scope of utility model registration request]

In an internal combustion engine piston having a side cut portion recessed from the piston outer circumference around the open end of a piston pin hole opened in the piston outer circumference, an oil ring groove provided on the piston outer circumference is communicated with the side cut portion. It has a first oil passage that connects and a second oil passage that communicates and connects the side cut portion and the piston internal space, and the first oil passage and the second oil passage are connected to the oil ring groove. A piston for an internal combustion engine, characterized in that the pistons are located at the same position with each other when viewed in the circumferential direction.