JPS60134850U

JPS60134850U - piston

Info

Publication number: JPS60134850U
Application number: JP2398284U
Authority: JP
Inventors: 小澤　理夫; 奥　武利; 力山本; 波田　寿秋; 糸川　泰司
Original assignee: 小沢　理夫
Priority date: 1984-02-21
Filing date: 1984-02-21
Publication date: 1985-09-07

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 drawings]

第１図は従来例の説明図、第２図〜第４図は本考案の一
実施例を示すもので、第２図は要部断面図、第３図は第
２図のＩ−Ｉ矢視図、第４図は第３図の■−■断面図、
第５図及び第６図は他の実施例を示すもので、第５図は
要部断面図、第６図は第５図の■−■矢視図である。１１・・・ピストン、１２・・・ピストン棒、１３・・
・ピストンクラウン、１４・・・ピストンスカート、１
８・・・第１冷却油路、１９・・・第２冷却油路、２０
・・・冷却油通路、２０ａ・・・環状空間部、２０ｂ・
・・中央空間部、２０ｃ・・・第１接続部、２０ｄ・・
・第２接続　　　　一部、２３．２３’・・・案内羽根
。FIG. 1 is an explanatory diagram of a conventional example, FIGS. 2 to 4 show an embodiment of the present invention, FIG. View, Figure 4 is a sectional view taken along ■-■ of Figure 3,
5 and 6 show other embodiments, in which FIG. 5 is a sectional view of a main part, and FIG. 6 is a view taken along arrows -■ in FIG. 11... Piston, 12... Piston rod, 13...
・Piston crown, 14...Piston skirt, 1
8... First cooling oil passage, 19... Second cooling oil passage, 20
...Cooling oil passage, 20a...Annular space, 20b.
...Central space part, 20c...First connection part, 20d...
・Second connection part, 23.23'...guide vane.

Claims

[Scope of utility model registration request]

A piston crown is rotatably supported around the piston rod's axis at the upper end of the piston rod, and a guide vane is provided in the cooling oil passage formed in the piston crown to change the flow direction of the cooling oil. Features a piston.