JPS61160206U

JPS61160206U -

Info

Publication number: JPS61160206U
Application number: JP4390185U
Authority: JP
Priority date: 1985-03-28
Filing date: 1985-03-28
Publication date: 1986-10-04

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す可変気筒制御装
置の縦断面図、第２図は第１図のＡ―Ａ断面図、
第３図は第１図と作動状態を異にする制御装置の
縦断面図、第４図は第１図のＢ―Ｂ断面図、第５
図及び第６図は夫々作動状態を異にする従来の可
変気筒のシステム図である。図の主要部分の説明、１……ボデー、２……プ
ランジヤ、３……カム、４……バルブ、５……電
磁弁、６……溝、７……バルブステム、８……ス
プリング、１０……ブロツク、１１……プレート
、１４……油路、１５……気筒切替コンピユータ
、１６……逃げ穴、１７……溝、２１……バルブ
スプリング、２２……リターンスプリング、２４
……バルブシート。 FIG. 1 is a longitudinal sectional view of a variable cylinder control device showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG.
Fig. 3 is a longitudinal sectional view of the control device in a different operating state from Fig. 1, Fig. 4 is a BB sectional view of Fig. 1, and Fig. 5
6 are system diagrams of conventional variable cylinders having different operating states. Explanation of the main parts of the diagram, 1...Body, 2...Plunger, 3...Cam, 4...Valve, 5...Solenoid valve, 6...Groove, 7...Valve stem, 8...Spring, 10 ... Block, 11 ... Plate, 14 ... Oil path, 15 ... Cylinder switching computer, 16 ... Relief hole, 17 ... Groove, 21 ... Valve spring, 22 ... Return spring, 24
...Valve seat.

Claims

[Scope of utility model registration request]

A plunger that can slide inside the block and is movable by hydraulic pressure in a direction perpendicular to the sliding direction is installed in the body that is always pressed against the cam, and one end of the valve stem touches the groove of the plunger during steady operation. When the cam rotates and moves in the same direction as the body slides, the valve at the other end of the valve stem opens and closes, and during cylinder reduction operation, the valve is switched by a signal from a cylinder switching computer. Even if the plunger is pushed by hydraulic pressure and the plunger moves toward the valve via the body due to the rotation of the cam, the valve stem rushes into the escape hole of the plunger and the valve stem does not synchronize with the movement of the plunger. In a variable cylinder system that performs cylinder reduction operation in this way, the groove width of the plunger groove with which one end of the valve stem engages during steady operation is formed to be slightly larger than the width of the valve stem, and the side surface of the groove is formed to be slightly larger than the width of the valve stem. A variable cylinder control device characterized in that a plunger is prevented from rotating by contacting a side surface of a valve stem.