JPH0248469U

JPH0248469U -

Info

Publication number: JPH0248469U
Application number: JP12773088U
Authority: JP
Priority date: 1988-09-29
Filing date: 1988-09-29
Publication date: 1990-04-04

Description

[Brief explanation of drawings]

第１図は本考案に従つた液圧制御装置の一実施
例を示す概略構成図、第２図は本考案における切
換手段を示す拡大断面図、第３図は第１図に示す
実施例におけるリザーバのストロークに対する液
圧ポンプの吐出量の関係を示す特性図、第４図は
第１図に示す実施例におけるリザーバに貯えられ
る量＋液圧ポンプの吐出量と時間の関係を示す特
性図である。１０……液圧制御装置、１１……マスタシリン
ダ、１２……液圧ポンプ、１２ａ……吐出ポート
、１２ｂ……吸入ポート、１３……ホイールシリ
ンダ、１６……切換弁、１７……液圧管路、２０
……切換手段、２１……オリフイス、２２……リ
ザーバ、２３……シリンダ、２３ａ……ポート、
２４……ピストン、２５……スプリング、２７…
…第２ポート、２８……第１ポート、２９……環
状溝。 FIG. 1 is a schematic configuration diagram showing one embodiment of a hydraulic pressure control device according to the present invention, FIG. 2 is an enlarged sectional view showing a switching means in the present invention, and FIG. A characteristic diagram showing the relationship between the discharge amount of the hydraulic pump and the stroke of the reservoir. FIG. 4 is a characteristic diagram showing the relationship between the amount stored in the reservoir + the discharge amount of the hydraulic pump and time in the embodiment shown in FIG. be. 10... Hydraulic pressure control device, 11... Master cylinder, 12... Hydraulic pump, 12a... Discharge port, 12b... Suction port, 13... Wheel cylinder, 16... Switching valve, 17... Hydraulic pressure pipe Road, 20
...Switching means, 21...Orifice, 22...Reservoir, 23...Cylinder, 23a...Port,
24...Piston, 25...Spring, 27...
...Second port, 28...First port, 29...Annular groove.

Claims

[Scope of utility model registration request]

A master cylinder, a hydraulic pump, a wheel cylinder operated by pressure liquid from the master cylinder and pressure liquid discharged from a discharge port of the hydraulic pump through an orifice, and a suction port of the hydraulic pump. a cylinder having a port connected to the wheel cylinder via a switching valve; a piston that is fluid-tightly and slidably assembled within the cylinder to form a fluid chamber communicating with the port; a spring that biases the piston toward the liquid chamber with a predetermined load;
A hydraulic control device comprising: a reservoir for storing hydraulic fluid discharged from the wheel cylinder through the switching valve in the fluid chamber and supplying it to the hydraulic pump; A first port connected to a hydraulic pipe line between cylinders; and a second port spaced apart from the first port toward the liquid chamber and connected to a hydraulic pipe line between a discharge port of the hydraulic pump and the orifice. and an annular groove is formed on the outer periphery of the piston to direct pressure fluid from the discharge port of the hydraulic pump to the wheel cylinder through the orifice when the amount of sliding of the piston is less than a predetermined amount. When the amount of sliding of the piston is greater than or equal to a predetermined amount, the pressure fluid from the discharge port of the hydraulic pump is bypassed through the orifice and the second
A hydraulic pressure control device comprising: a switching means for supplying water to the wheel cylinder via a port, the annular groove, and the first port.