JPS5970865U

JPS5970865U - Brake hydraulic pressure control device

Info

Publication number: JPS5970865U
Application number: JP16671982U
Authority: JP
Inventors: 弘之岡
Original assignee: トヨタ自動車株式会社
Priority date: 1982-11-02
Filing date: 1982-11-02
Publication date: 1984-05-14

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 the drawing]

第１図は、本考案の一実施例である液圧制御装置を示す
正面断面図である。第２図は、上記液圧制御装置の作用
効果を説明するためのグラフである。第３図は比較のた
めに示すものであって、従来の液圧制御装置における第
２図に相当する図である。第４図は第３図に制御特性を
示した従来の液圧制御装置の断面図である。２：ハウジング本体、１５：慣性弁室、２４：減圧弁室
、２６：制御液圧室、４２．　４４．　６２：弁座、４
５：固定金具、４６：摺動筒、４８．　６０．　７８：
圧縮スプリング、５４：ボール、５６．８４：慣性　　
弁、５８：減圧弁子、６４：ばね受、６６二ロツド、７
０：常閉減圧弁、７２：ピストン、８２：減圧弁制御装
置。第３図　− １ −前輪ｌ／ＪｖｐＪ刀、−砺勅力′；）変動！８４　　　　　　　　　−FIG. 1 is a front sectional view showing a hydraulic pressure control device that is an embodiment of the present invention. FIG. 2 is a graph for explaining the effects of the hydraulic pressure control device. FIG. 3 is shown for comparison and corresponds to FIG. 2 in a conventional hydraulic pressure control device. FIG. 4 is a sectional view of the conventional hydraulic pressure control device whose control characteristics are shown in FIG. 3. 2: housing main body, 15: inertia valve chamber, 24: pressure reducing valve chamber, 26: control hydraulic pressure chamber, 42. 44. 62: Valve seat, 4
5: Fixing metal fittings, 46: Sliding tube, 48. 60. 78:
Compression spring, 54: Ball, 56.84: Inertia
Valve, 58: Pressure reducing valve, 64: Spring receiver, 66 2 rods, 7
0: Normally closed pressure reducing valve, 72: Piston, 82: Pressure reducing valve control device. Figure 3 - 1 - Front wheel l/JvpJ sword, - Tokoriki';) Fluctuation! 84-

Claims

[Claims for Utility Model Registration] A hydraulic pressure control device that is installed in a vehicle hydraulic brake device and controls hydraulic pressure transmitted from a mask cylinder to a wheel cylinder of a rear wheel brake, the device comprising: It is provided in the liquid passage connecting the wheel cylinder and is always located away from the valve seat, and when the deceleration of the vehicle reaches a predetermined value, it seats on the valve seat and closes the liquid passage. an inertia valve equipped with an inertia valve element that is connected to the liquid passageway in parallel with the inertia valve;
is closed, but when the hydraulic pressure of the mask cylinder reaches the activation start pressure, it starts operating, and from then on, the mask cylinder hydraulic pressure is reduced by a set amount and transmitted to the wheel cylinder. A brake fluid pressure control device comprising: a closed pressure reducing valve; and a pressure reducing valve control device that reduces a set pressure reducing section of the pressure reducing valve as the flow pressure at the time of closing of the break-in valve increases.