JPH0418063U

JPH0418063U -

Info

Publication number: JPH0418063U
Application number: JP6003990U
Authority: JP
Priority date: 1990-06-05
Filing date: 1990-06-05
Publication date: 1992-02-14

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例のブレーキ液圧制
御装置のブレーキ圧制御弁部分の断面図である。
第２Ａ図は、同実施例の要部拡大断面図、第２Ｂ
図は、そのリテーナ３１の平面図である。第３Ａ
図は、本考案の他の実施例を示す要部拡大断面図
、第３Ｂ図はそのリテーナ３１の平面図である。
第４図は、従来のブレーキ液圧制御装置の要部断
面図である。図において、２１は段付きシリンダ室、２２は
ハウジング、２３，２４はホイルシリンダ接続口
、２５，２６はマスタシリンダ接続口、２７は弁
棒、２７ａは弁頭、２７ｂはフランジ部、２８は
弾性弁シール、２９は環状ベース部、２９ａは弁
座、２９ｂは突起部、３０は環状リツプ部、２１
はリテーナ、３１ａは円板部、３１ｂは鍔部であ
る。 FIG. 1 is a sectional view of a brake pressure control valve portion of a brake fluid pressure control device according to an embodiment of the present invention.
Figure 2A is an enlarged sectional view of the main part of the same embodiment, and Figure 2B is
The figure is a plan view of the retainer 31. 3rd A
The figure is an enlarged sectional view of a main part showing another embodiment of the present invention, and FIG. 3B is a plan view of the retainer 31.
FIG. 4 is a sectional view of a main part of a conventional brake fluid pressure control device. In the figure, 21 is a stepped cylinder chamber, 22 is a housing, 23 and 24 are foil cylinder connection ports, 25 and 26 are master cylinder connection ports, 27 is a valve stem, 27a is a valve head, 27b is a flange, and 28 is an elastic Valve seal, 29 is an annular base part, 29a is a valve seat, 29b is a projection part, 30 is an annular lip part, 21
31a is a disk portion, and 31b is a flange portion.

Claims

[Scope of Claim for Utility Model Registration] A stepped cylinder chamber, and a master cylinder joint port and a foil cylinder connection port that cover the stepped cylinder chamber and communicate with the large diameter portion and the small diameter portion of the stepped cylinder chamber, respectively. The main body includes a housing and an annular base portion forming a valve seat near the inner periphery of the end face on the small diameter side of the stepped cylinder chamber, and brake fluid flows from the large diameter side to the small diameter side of the stepped cylinder chamber. an elastic valve seal disposed near the step in the large diameter portion of the stepped cylinder chamber, the elastic valve seal having an annular lip portion that comes into contact with the peripheral wall of the large diameter portion of the stepped cylinder chamber to prevent A valve head that passes through the inside of the annular base portion of the valve seal with a gap therebetween, receives the hydraulic pressure of the foil cylinder at one end, and seats on and leaves the valve seat from the small diameter side of the stepped cylinder chamber. a valve stem provided with a flange portion at a position facing an end surface of the annular base opposite to the valve seat, and urging the valve stem so as to separate the valve head from the valve seat. a spring; the elastic valve seal has a plurality of radial protrusions formed on one end thereof so as to be able to come into contact with the end wall of the large diameter portion of the stepped cylinder; and a plurality of radial protrusions formed on the outer periphery thereof. A brake fluid pressure control device having an axial protrusion, wherein between the elastic valve seal and the flange portion of the valve stem, an end face of the elastic valve seal on the master cylinder connection port side, and an end face of the elastic valve seal on the master cylinder connection port side. an annular disk portion sandwiched between an end surface of the flange portion facing the flange portion and an inner circumferential wall surface of the large diameter portion of the cylinder, and an opening that fits with a tightness and allows brake fluid to circulate; 1. A brake fluid pressure control device comprising a disc-shaped retainer comprising a flange having a flange portion.