JPS61107914U

JPS61107914U -

Info

Publication number: JPS61107914U
Application number: JP19323784U
Authority: JP
Priority date: 1984-12-19
Filing date: 1984-12-19
Publication date: 1986-07-09

Description

[Brief explanation of the drawing]

第１図は本考案に係るピストン冷却装置の一例
を示す断面図、第２図は潤滑油圧力とオイル噴出
流量との関係を示すグラフ、第３図は従来のボー
ル弁式チエツクバルブを用いた冷却装置の一例を
示す断面図、第４図は従来のピストン弁式チエツ
クバルブを用いたピストン冷却装置の一例を示す
断面図である。２……メインオイルギヤラリー、３，２５，３
２，３６……オイル通路、１０……ピストン、２
６……オイルジエツトノズル、２７……ボール、
２９……ばね受け部材、３１……弁受け部材、３
３……圧縮スプリング、３４……オイル逃し孔、
３５……弁座部。 Figure 1 is a sectional view showing an example of a piston cooling device according to the present invention, Figure 2 is a graph showing the relationship between lubricating oil pressure and oil jet flow rate, and Figure 3 is a diagram showing an example of a piston cooling device using a conventional ball valve type check valve. FIG. 4 is a sectional view showing an example of a piston cooling device using a conventional piston valve type check valve. 2...Main oil gear rally, 3, 25, 3
2, 36...Oil passage, 10...Piston, 2
6...Oil jet nozzle, 27...Ball,
29... Spring receiving member, 31... Valve receiving member, 3
3... Compression spring, 34... Oil relief hole,
35...Valve seat part.

Claims

[Scope of utility model registration request]

An oil jet nozzle directed toward the lower surface of the piston is provided below the piston, and a compression spring is inserted between a predetermined fixed spring receiver and an oil passage leading from the main oil gear rally to the oil jet nozzle. In an oil jet type piston cooling device provided with a ball valve that is always biased in a passage closing direction, a valve receiving member is provided with a valve seat portion on a fixed end side of the compression spring for receiving the ball valve in a fully open state. A piston cooling device characterized in that the valve receiving member is provided with an oil relief hole that is closed when the ball valve is seated on the valve seat.