JPS6364563U

JPS6364563U -

Info

Publication number: JPS6364563U
Application number: JP16045386U
Authority: JP
Priority date: 1986-10-20
Filing date: 1986-10-20
Publication date: 1988-04-28

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す概略図、第２
図、第３図、第４図Ａおよび第４図Ｂは本考案の
他の実施例を示すもので、第２図は第１ピストン
の側面図、第３図は第２図の―線に沿う矢視
断面図、第４図Ａおよび第４図Ｂは他の実施例の
作動を説明するための要部の拡大図、第５図は従
来の一構造例を示す第１図と同様の図である。２０……制動装置、２１……左前輪ブレーキ、
２２……右前輪ブレーキ、２３……右後輪ブレー
キ、２４……左後輪ブレーキ、２５……一方の作
動油供給ライン、２６……他方の作動油供給ライ
ン、２７……油圧制御手段、２８……後輪制御弁
、２９……一方向弁、３０……第１ピストン、３
１……第２ピストン、３０ａ，４５……係合溝、
Ｔ……車輪。 Fig. 1 is a schematic diagram showing an embodiment of the present invention;
3, 4A and 4B show other embodiments of the present invention, FIG. 2 is a side view of the first piston, and FIG. 3 is a side view of the first piston. 4A and 4B are enlarged views of essential parts for explaining the operation of another embodiment, and FIG. 5 is a diagram similar to FIG. 1 showing a conventional structural example. It is a diagram. 20...braking device, 21...left front wheel brake,
22... Right front wheel brake, 23... Right rear wheel brake, 24... Left rear wheel brake, 25... One hydraulic oil supply line, 26... Other hydraulic oil supply line, 27... Hydraulic control means, 28... Rear wheel control valve, 29... One-way valve, 30... First piston, 3
1...Second piston, 30a, 45...Engagement groove,
T...Wheel.

Claims

[Scope of utility model registration request]

Two hydraulic oil supply lines are provided to connect the front and rear brakes located diagonally on the four-wheeled vehicle, and one hydraulic oil supply line is installed to connect one hydraulic oil supply line to the other, depending on the rotational state of the wheels. a hydraulic control means for adjusting the pressure of the hydraulic oil in the hydraulic oil supply line of the hydraulic oil supply line, and a hydraulic oil that connects both the hydraulic oil supply lines on the downstream side of the hydraulic control means and is controlled by the hydraulic control means. Based on pressure
and a rear wheel control valve that equalizes the pressure of hydraulic oil supplied to both rear wheel brakes, and the rear wheel control valve connects and disconnects the other hydraulic oil supply line that is not provided with a hydraulic control means. a one-way valve; a first piston that opens and closes the one-way valve based on the difference between the hydraulic oil pressure controlled by the hydraulic control means and the hydraulic oil pressure in the other hydraulic oil supply line; The valve is provided to intersect with the first piston, and is actuated based on the pressure difference between the hydraulic oil in both the hydraulic oil supply lines, so that the one-way valve is engaged with the first piston in an open state. A skid prevention braking device for a four-wheeled vehicle, comprising a second piston that is fixed by being moved.