JPS6328068U

JPS6328068U -

Info

Publication number: JPS6328068U
Application number: JP12204286U
Authority: JP
Priority date: 1986-08-08
Filing date: 1986-08-08
Publication date: 1988-02-24

Description

[Brief explanation of the drawing]

第１〜６図は本考案に係るブレーキ制御装置の
第１実施例を示す図であり、第１図はその全体断
面図、第２図はその液圧制御弁の断面図、第３図
ａはそのポペツト弁体の正面図、第３図ｂは第３
図ａの下面図、第４図ａはその作動部材の正面図
、第４図ｂは第４図ａの下面図、第５図はその作
用を説明する要部断面図、第６図はその作用を説
明するグラフである。第７図は本考案の第２実施
例を示すその要部断面図である。第８〜１０図は
本考案の第３実施例を示す図であり、第８図はそ
の全体断面図、第９図ａはその液圧制御弁の断面
図、第９図ｂはその作用を説明するその断面図、
第１０図ａはその係合部材の正面図、第１０図ｂ
は第１０図ａの側面図である。２……マスタシリンダ、３……リザーバタンク
、５，３１，４１……液圧制御弁、７……ハウジ
ング、８……第１ポート、１０……フロントホイ
ール用のセカンダリピストン、１１……リヤホイ
ール用のプライマリピストン、１２，３８，４８
……係合部材、１３，１４……リターンスプリン
グ、１５……フロント用圧力室、１６……リヤ用
圧力室、１７……補給孔、１８……環状溝、１９
……シール部材、２０Ａ……入口室、２０Ｂ……
出口室、２１……第２ポート、２１ａ……開口部
、２２，３２，４２……段差ピストン、２３，３
３，４３……ポペツト弁体、２３ａ，３３ａ，４
３ａ……ポペツトバルブ、２３ｂ，３３ｂ，４３
ｂ……支持体、２５……液通路、２６……スプリ
ング、２７，３４，４４……小スプリング、３０
，３７，４７……作動部材、４９……円孔、５０
……スリツト。 1 to 6 are diagrams showing a first embodiment of the brake control device according to the present invention, in which FIG. 1 is an overall sectional view, FIG. 2 is a sectional view of its hydraulic pressure control valve, and FIG. 3 a. is a front view of the poppet valve body, and Figure 3b is a front view of the poppet valve body.
Figure a is a bottom view, Figure 4a is a front view of the operating member, Figure 4b is a bottom view of Figure 4a, Figure 5 is a cross-sectional view of the main part explaining its action, and Figure 6 is its operation member. It is a graph explaining the effect. FIG. 7 is a sectional view of a main part showing a second embodiment of the present invention. Figures 8 to 10 are diagrams showing a third embodiment of the present invention, with Figure 8 being an overall sectional view, Figure 9a being a sectional view of its hydraulic pressure control valve, and Figure 9b showing its operation. Its cross-sectional view to explain,
Figure 10a is a front view of the engaging member, Figure 10b
is a side view of FIG. 10a; 2... Master cylinder, 3... Reservoir tank, 5, 31, 41... Hydraulic pressure control valve, 7... Housing, 8... First port, 10... Secondary piston for front wheel, 11... Rear Primary piston for wheels, 12, 38, 48
...Engagement member, 13, 14... Return spring, 15... Front pressure chamber, 16... Rear pressure chamber, 17... Supply hole, 18... Annular groove, 19
... Seal member, 20A ... Entrance chamber, 20B ...
Outlet chamber, 21... Second port, 21a... Opening, 22, 32, 42... Step piston, 23, 3
3, 43...Poppet valve body, 23a, 33a, 4
3a...Poppet valve, 23b, 33b, 43
b...Support body, 25...Liquid passage, 26...Spring, 27, 34, 44...Small spring, 30
, 37, 47... Operating member, 49... Circular hole, 50
...Slit.

Claims

[Scope of utility model registration request]

A tandem-type brake master cylinder that pumps brake fluid to the front wheel cylinder and rear wheel cylinder, a port formed in the housing to communicate with the rear wheel cylinder between the secondary piston and the primary piston of the brake master cylinder, and a port formed in the housing to communicate with the rear wheel cylinder. It has a stepped piston that moves in response to the hydraulic pressure of the connected inlet chamber and the hydraulic pressure of the outlet chamber connected to the rear wheel cylinder, and a poppet valve that opens and closes the liquid passage communicating the inlet chamber and the outlet chamber by the movement of the stepped piston. A brake control device comprising: a hydraulic pressure control valve; an engaging member fixed to the secondary piston to move with the secondary piston and engage the actuating member, the engaging member opening a fluid passage through the actuating member in the event of failure of the front wheel cylinder system. A brake control device characterized by: