JPH03125663U

JPH03125663U -

Info

Publication number: JPH03125663U
Application number: JP3430590U
Authority: JP
Priority date: 1990-03-31
Filing date: 1990-03-31
Publication date: 1991-12-18

Description

[Brief explanation of drawings]

図は本考案に従つた車輪制動制御装置の一実施
例を示す概略構成図である。１０……マスタシリンダ、１０ａ……前方液圧
室（液圧室）、１１……ホイールシリンダ、２０
……液圧回路、２１……通路、２５……リザーバ
、２６……液圧ポンプ、２６ａ……吐出口、２９
……吐出通路、３０……可変オリフイス（可変オ
リフイス手段）、３１……ボデイ、３２……入力
ポート、３３……出力ポート、３４……パイロツ
トポート、３５……パイロツト室、３６……通路
室、３７……ピストン（ピストン手段）、３９…
…スプリング（付勢手段）、４０……還流式アン
チスキツド回路、４１……リリーフ弁。 The figure is a schematic configuration diagram showing an embodiment of a wheel braking control device according to the present invention. 10...Master cylinder, 10a...Front hydraulic pressure chamber (hydraulic pressure chamber), 11...Wheel cylinder, 20
... Hydraulic pressure circuit, 21 ... Passage, 25 ... Reservoir, 26 ... Hydraulic pump, 26a ... Discharge port, 29
...discharge passage, 30 ... variable orifice (variable orifice means), 31 ... body, 32 ... input port, 33 ... output port, 34 ... pilot port, 35 ... pilot chamber, 36 ... passage chamber , 37...piston (piston means), 39...
... Spring (biasing means), 40 ... Reflux type anti-skid circuit, 41 ... Relief valve.

Claims

[Claims for Utility Model Registration] (1) In a wheel braking control device in which a reflux anti-skid circuit including a hydraulic pump is assembled to a hydraulic circuit connecting a hydraulic chamber of a master cylinder to a wheel cylinder, A variable orifice means is provided in the discharge passage of the hydraulic pump connected to the pressure circuit to vary the passage area of the discharge passage in proportion to the hydraulic pressure in the hydraulic pressure chamber of the master cylinder. Wheel braking control device. (2) The variable orifice means includes a body having an inner hole through which an input port communicating with the discharge port of the hydraulic pump, an output port communicating with the hydraulic circuit, and a pilot port open, respectively, and an inner hole of the body. a piston means that is slidably fitted in a liquid-tight manner to define a pilot chamber in which the pilot port opens in the body, and a passage chamber in which the input port and the output port open; urging means for urging the piston means toward the pilot chamber; and urging means provided in the piston means that cooperates with the inner hole to increase the passage area of the passage chamber between the input port and the output port. 2. The wheel braking control device according to claim 1, further comprising orifice means for increasing the hydraulic pressure in proportion to the hydraulic pressure. (3) Preventing liquid flow from the hydraulic circuit to the discharge port of the hydraulic pump, and ensuring that the difference between the hydraulic pressure at the discharge port of the hydraulic pump and the hydraulic pressure in the hydraulic circuit is equal to or higher than a predetermined hydraulic pressure. Claim (2) characterized in that a relief valve that allows fluid to flow from the discharge of the hydraulic pump to the hydraulic circuit is interposed between the input port and the output port in parallel with the passage chamber. ).The wheel braking control device described in ).