JPS6168962U

JPS6168962U -

Info

Publication number: JPS6168962U
Application number: JP15397384U
Authority: JP
Priority date: 1984-10-12
Filing date: 1984-10-12
Publication date: 1986-05-12

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例を示した断面図、第
２図は第１図の液圧制御特性を示したグラフ図、
第３図は従来例を示した断面図である。１：ハウジング、４：入口室、５：出口室、６
：ポペツトバルブ、６ａ：ポペツト弁体、６ｂ：
弁座、１０：段付ピストン、１１：大径部、１２
，１４：カツプシール、１３：中径部、１５：小
径部、１６：スプリング、１７，１９：バツクア
ツプリング、１８：ストツパリング、２０：保持
部材。 FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a graph showing the hydraulic pressure control characteristics of FIG. 1,
FIG. 3 is a sectional view showing a conventional example. 1: Housing, 4: Inlet chamber, 5: Outlet chamber, 6
: Poppet valve, 6a: Poppet valve body, 6b:
Valve seat, 10: Stepped piston, 11: Large diameter section, 12
, 14: Cup seal, 13: Medium diameter portion, 15: Small diameter portion, 16: Spring, 17, 19: Backup spring, 18: Stopper ring, 20: Holding member.

Claims

【実用新案登録請求の範囲】 (1) マスタシリンダに接続される入口室の液圧
とリアホイールシリンダに接続される出口室の液
圧を相対する方向から受けて移動する段付ピスト
ンと、該段付ピストンに内蔵されその移動により
入口室と出口室を連通する通路を開閉するポペツ
トバルブと、前記段付ピストンを前記ポペツトバ
ルブが開放する方向に押圧するスプリングとを有
するブレーキ液圧制御弁に於いて、前記段付ピストンを、前記ポペツトバルブを内
蔵する大径部と、前記入口室と出口室とを区切る
ハウジング側に配置したシール手段との摺動部と
なる中径部と、前記入口室と大気側とを区切る他
のシール手段の摺動部となる小径部とで構成した
ことを特徴とするブレーキ液圧制御装置。 (2) 前記入口室と出口室とを区切るシール手段
は、外径部がハウジングに嵌合係止され内径部に
段付ピストンの中径部を摺動自在に嵌挿したバツ
クアツプリングでシール部材をハウジング側に保
持したことを特徴とする実用新案登録請求の範囲
第１項記載のブレーキ液圧制御弁。 (3) 前記入口室と出口室とを区切るシール手段
と、前記入口室と大気側とを区切る他のシール手
段との間に、保持部材を介装して該２つのシール
手段の移動を規制したことを特徴とする実用新案
登録請求の範囲第１項記載のブレーキ液圧制御弁
。[Claims for Utility Model Registration] (1) A stepped piston that moves by receiving hydraulic pressure in an inlet chamber connected to a master cylinder and hydraulic pressure in an outlet chamber connected to a rear wheel cylinder from opposite directions; A brake fluid pressure control valve having a poppet valve that is built into a stepped piston and opens and closes a passage communicating between an inlet chamber and an outlet chamber by movement of the poppet valve, and a spring that presses the stepped piston in a direction in which the poppet valve opens. , the stepped piston has a large diameter part that houses the poppet valve, a medium diameter part that is a sliding part with a sealing means disposed on the housing side that separates the inlet chamber and the outlet chamber, and a part that is connected to the inlet chamber and the atmosphere. 1. A brake fluid pressure control device comprising: a small diameter portion that serves as a sliding portion for another sealing means that separates the side from the other side; (2) The sealing means separating the inlet chamber and the outlet chamber is a back-up spring whose outer diameter part is fitted and locked to the housing and whose inner diameter part is slidably inserted into the inner diameter part of the stepped piston. The brake fluid pressure control valve according to claim 1, characterized in that the member is held on the housing side. (3) A holding member is interposed between the sealing means that separates the inlet chamber and the outlet chamber and the other sealing means that separates the inlet chamber from the atmosphere side to restrict movement of the two sealing means. The brake fluid pressure control valve according to claim 1 of the utility model registration claim, characterized in that: