JPS6352660U

JPS6352660U -

Info

Publication number: JPS6352660U
Application number: JP14645286U
Authority: JP
Priority date: 1986-09-26
Filing date: 1986-09-26
Publication date: 1988-04-08

Description

[Brief explanation of the drawing]

第１図は本考案のＰバルブに適用されるピスト
ンの側面図、第２図は第１図Ａ部の拡大図、第３
図はＰバルブに適用される代表的な弁体の側断面
図、第４図は本考案と従来のＰバルブにおけるピ
ストンの作動状態を示す説明図、第５図は従来の
Ｐバルブに適用されているピストンの側面図、第
６図はＰバルブの代表的な例を示す断面図である
。図の主要部分の説明、１……シリンダ、２，２
′……ピストン、２ａ……大径部、２ｂ……小径
部、２ｃ′……縮径部、５……第１液室、６……
第２液室、９……圧縮スプリング、１０……弁体
。 Figure 1 is a side view of the piston applied to the P valve of the present invention, Figure 2 is an enlarged view of section A in Figure 1, and Figure 3 is an enlarged view of section A in Figure 1.
The figure is a side sectional view of a typical valve body applied to the P-valve, Figure 4 is an explanatory diagram showing the operating state of the piston in the present invention and the conventional P-valve, and Figure 5 is the valve body applied to the conventional P-valve. FIG. 6 is a sectional view showing a typical example of a P-valve. Explanation of the main parts of the diagram, 1...Cylinder, 2, 2
'... Piston, 2a... Large diameter part, 2b... Small diameter part, 2c'... Reduced diameter part, 5... First liquid chamber, 6...
Second liquid chamber, 9...compression spring, 10...valve body.

Claims

[Scope of utility model registration request]

A piston that is inserted into a cylinder and has a small diameter part and a large diameter part and has different pressure receiving areas, a first liquid chamber in which the small pressure receiving area of the piston is exposed, and a second liquid chamber in which the large pressure receiving area is exposed. a ring-shaped valve body made of an elastic material installed at the boundary between the two chambers and loosely fitted into the small diameter portion of the piston to open and close the two chambers by sliding of the piston; The master cylinder includes a compression spring that acts to release in a normal state, and a cylinder that includes a fluid hole that communicates the first fluid chamber with the master cylinder and a fluid hole that communicates the second fluid chamber with the wheel cylinder. In the braking hydraulic pressure control device configured to slide the piston by the hydraulic pressure acting on the pressure receiving area difference of the piston and the return force of the compression spring in conjunction with the generated hydraulic pressure, the valve body of the piston and A brake hydraulic pressure control device characterized in that the diameter of the loose fitting portion of the piston is gradually increased toward the large diameter portion of the piston.