JPS60103062U

JPS60103062U - Vehicle brake device

Info

Publication number: JPS60103062U
Application number: JP19554683U
Authority: JP
Inventors: 利男高山; 幸男松本; 安藤　博美
Original assignee: トキコ株式会社
Priority date: 1983-12-20
Filing date: 1983-12-20
Publication date: 1985-07-13

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 drawings]

第１図は本考案の一実施例を示すもので、縦断側面図に
配管図及び電気回路図を加えた図、第２図はその制動力
及び車速並びに減速度の特性図、第３図は従来゛の車両
ブレーキ装置の第２図同様の　、特性図、第４図は本考
案の他の実施例を示す第゛１図同様の縦断側面図、第５
図は本考案のさらに他の実施例を示す第１図同様の縦断
側面図である。３１・・・・・・本体、３４・・・・・・フロントパワ
ーピスト　　　　−−ン、３５・・・・・・隔壁、３６
・・・・・・リアパワーピストン、Ａ・・・・・・室（
真空室）、Ｂ・・・・・・室（圧力室）、Ｃ゛・・・・
・・室（真空室）、Ｄ・・・・・・室（圧力室）、３７
，４訃・・・・・ダイアフラム、４３・・・・・・出力
軸、５２・・・・・・プランジャ、５４・・・・・・プ
ッシュロ２ンド、５７・・曲ポペットバルブ、７３・・
・・・・リターンスプリング、７６．７７・・・・・・
接続管、？９．８１．９６・・・・・・切換弁、８０・
・・・・・逆止弁、８２，９５・・・・・・レギュレー
タ、８６・・・・・・車速センサ、８８・・・・・・車
内手動スイッチ、９１・・・・・・バキューム差圧セン
サ、９３・・・・・・メインスイッチ、■１．■２・・
・・・・所定の車速。１＝；−二−−ｍ−− −一一時間Fig. 1 shows an embodiment of the present invention, which is a vertical side view with a piping diagram and an electric circuit diagram added, Fig. 2 is a characteristic diagram of braking force, vehicle speed, and deceleration, and Fig. 3 is a diagram showing the characteristics of braking force, vehicle speed, and deceleration. FIG. 4 is a characteristic diagram similar to FIG. 2 of a conventional vehicle braking device; FIG. 4 is a vertical sectional side view similar to FIG. 1 showing another embodiment of the present invention;
This figure is a longitudinal sectional side view similar to FIG. 1 showing still another embodiment of the present invention. 31...Body, 34...Front power piston, 35...Bulkhead, 36
...... Rear power piston, A... Chamber (
vacuum chamber), B... chamber (pressure chamber), C゛...
... Chamber (vacuum chamber), D... Chamber (pressure chamber), 37
, 4...Diaphragm, 43...Output shaft, 52...Plunger, 54...Push rod 2nd, 57...Curved poppet valve, 73...
...Return spring, 76.77...
Connecting pipe? 9.81.96...Switching valve, 80.
...Check valve, 82, 95...Regulator, 86...Vehicle speed sensor, 88...In-vehicle manual switch, 91...Vacuum difference Pressure sensor, 93...Main switch, ■1. ■2...
...Predetermined vehicle speed. 1 =;-2--m-- -11 hours

Claims

[Scope of utility model registration request]

(1) Negative pressure is introduced into the front side vacuum chamber of the power piston, which is displaceably provided in the shell body via a diaphragm, and atmospheric air is introduced into the rear side pressure chamber to increase the difference between the vacuum chamber and the pressure chamber. A switching valve is connected to the pressure chamber of the brake booster that generates thrust in the power piston by pressure and transmits the thrust to an output shaft provided on the power piston, and an in-vehicle manual switch is connected to the switching valve, A braking device that automatically generates braking force by switching the switching valve, which enables the switching valve to be operated by operating the in-vehicle manual switch only when the speed of the vehicle is less than a predetermined vehicle speed 1, When the braking force reaches a predetermined value at the time when the vehicle speed decelerates to a predetermined vehicle speed 2, the switching valve is switched to maintain the braking force at the reference value, and the braking force reaches the predetermined value. A vehicle braking device characterized in that when there is no braking force, the braking force is increased to the reference value.

(2) The vehicle brake system according to claim 1, wherein the braking force is increased by switching the switching valve again after the vehicle is stopped by operating the in-vehicle manual switch. −