JP2582115Y2 - Master cylinder valve structure - Google Patents
Master cylinder valve structureInfo
- Publication number
- JP2582115Y2 JP2582115Y2 JP1990402043U JP40204390U JP2582115Y2 JP 2582115 Y2 JP2582115 Y2 JP 2582115Y2 JP 1990402043 U JP1990402043 U JP 1990402043U JP 40204390 U JP40204390 U JP 40204390U JP 2582115 Y2 JP2582115 Y2 JP 2582115Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- spring
- hole
- master cylinder
- cylindrical portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Transmission Of Braking Force In Braking Systems (AREA)
- Lift Valve (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は、車両等のブレーキ装
置で使用されるマスタシリンダの弁構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve structure of a master cylinder used in a brake device of a vehicle or the like.
【０００２】[0002]
【従来の技術】この種のマスタシリンダの弁構造として
は、従来、実開平１−６８９７６号公報に記載されたも
のがある。図６はこの従来の弁構造を示したもので、タ
ンデムマスタシリンダのシリンダ本体１に形成したシリ
ンダ孔２底側との間に圧力室（従圧力室）３を区画する
ピストン（従ピストン）４は、このシリンダ孔２底側に
伸び通孔５Ａを持つ有底の筒状部５を有するとともに半
径方向に貫通して軸方向に伸びる長孔６と一端がこの長
孔６に開口し他端が筒状部５の底に開口する軸方向の弁
孔７が形成され、この弁孔７の開口周辺部の弁座８に着
座可能な弁部９を持つ弁体１０がその軸部１１を上記弁
孔７に嵌合し、弁ばね１２で上記弁座８側へ付勢されて
配設されている。この軸部１１の長孔６側端は、この長
孔６を貫通してシリンダ孔２周壁に係止された軸状の開
弁部材１３に当接係合している。１４は液補給室、１５
は通孔、１６は戻しばね、１７は作動液リザーバの接続
部が接続されるボス部、１８Ａ、１８Ｂは密封部材であ
る。2. Description of the Related Art As a valve structure of a master cylinder of this type, there is a structure described in Japanese Utility Model Laid-Open No. 1-68976. FIG. 6 shows this conventional valve structure, in which a piston (slave piston) 4 which partitions a pressure chamber (slave pressure chamber) 3 between itself and a bottom of a cylinder hole 2 formed in a cylinder body 1 of a tandem master cylinder. Has a bottomed cylindrical portion 5 having a through hole 5A at the bottom side of the cylinder hole 2 and a long hole 6 penetrating in the radial direction and extending in the axial direction, and one end opening to the long hole 6 and the other end. An axial valve hole 7 is formed at the bottom of the cylindrical portion 5, and a valve body 10 having a valve portion 9 which can be seated on a valve seat 8 around the opening of the valve hole 7 forms the shaft portion 11. It is fitted in the valve hole 7 and urged toward the valve seat 8 by a valve spring 12 to be disposed. The end of the shaft portion 11 on the side of the long hole 6 is in contact with and engages with a shaft-shaped valve-opening member 13 that passes through the long hole 6 and is locked on the peripheral wall of the cylinder hole 2. 14 is a liquid supply room, 15
Is a through hole, 16 is a return spring, 17 is a boss to which a connecting portion of the hydraulic fluid reservoir is connected, and 18A and 18B are sealing members.
【０００３】図はマスタシリンダの作動直後の状態を示
しており、非作動状態では、弁部９が弁座８から離間し
て、圧力室３は、通孔５Ａ−弁孔７−長孔６−液補給室
１４−通孔１５を通して図示しない作動液リザーバに連
通している。FIG. 1 shows a state immediately after the operation of the master cylinder. In a non-operating state, the valve portion 9 is separated from the valve seat 8, and the pressure chamber 3 is provided with a through hole 5A, a valve hole 7, and a long hole 6. The fluid supply chamber 14 communicates with a working fluid reservoir (not shown) through the through hole 15.
【０００４】非作動状態で図示しないブレーキペダルが
踏込まれると、ピストン４が戻しばね１６に抗しシリン
ダ孔２底側に駆動され、弁部９が弁座８に着座して弁孔
７を閉鎖する図示の状態となり、図示しないリザーバと
圧力室３との連通が遮断され、その後、ピストン４が前
進すると、圧力室３に液圧が発生する。発生した液圧は
図示しない吐出部から該吐出部に接続されている配管に
吐出され、該配管を通してブレーキ装置に供給される。When a brake pedal (not shown) is depressed in a non-operating state, the piston 4 is driven toward the bottom of the cylinder hole 2 against the return spring 16, and the valve portion 9 is seated on the valve seat 8 to open the valve hole 7. The state shown in the drawing is closed, and the communication between the reservoir (not shown) and the pressure chamber 3 is interrupted. Thereafter, when the piston 4 moves forward, a hydraulic pressure is generated in the pressure chamber 3. The generated hydraulic pressure is discharged from a discharge section (not shown) to a pipe connected to the discharge section, and is supplied to the brake device through the pipe.
【０００５】[0005]
【考案が解決しようとする課題】この弁構造では、上記
弁ばね１２の一端は弁部９の段部９Ａで受けるが他端を
筒状部５の上記シリンダ孔２底側端部の開口の内側に配
設したばね受け１９で受け、このばね受け１９は止め具
２０で抜止めし、この止め具２０を溝２１に嵌着する。
このばね受け１９は弁ばね１２の上記他端を単なる当接
係合により受けているので、組付時、ばね受け１９と弁
ばね１２の上記他端側との半径方向相対位置ずれを防止
しながら止め具２０を溝２１に嵌着しなくてはならず、
止め具２０装着の作業性が、特に、ばね受け１９が平板
状である場合に、著しく悪いという問題があった。In this valve structure, one end of the valve spring 12 is received by the step 9A of the valve portion 9, but the other end is received.
The cylindrical portion 5 is received by a spring receiver 19 disposed inside the opening at the bottom end of the cylinder hole 2. The spring receiver 19 is stopped by a stopper 20, and the stopper 20 is fitted into the groove 21. I do.
Since the spring receiver 19 receives the other end of the valve spring 12 by merely abutting engagement, it prevents radial displacement of the spring receiver 19 and the other end of the valve spring 12 in the radial direction during assembly. The stop 20 must be fitted into the groove 21 while
There is a problem that the workability of attaching the stopper 20 is extremely poor, particularly when the spring receiver 19 is flat.
【０００６】また、ばね受け１９に弁ばね１２が嵌合す
る筒状のガイド部を設ける場合にはピストン長を長くす
るといった問題がある。[0006] In addition, when a cylindrical guide portion in which the valve spring 12 is fitted is provided in the spring receiver 19, there is a problem that the piston length is increased.
【０００７】本考案は上記問題を解消するためになされ
たもので、止め具装着作業の作業性を、特に、ばね受け
が平板状である場合に顕著に向上することができるマス
タシリンダの弁構造を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and the valve structure of a master cylinder which can remarkably improve the workability of attaching a stopper, particularly when the spring receiver is flat. The purpose is to provide.
【０００８】[0008]
【課題を解決するための手段】本考案は上記目的を達成
するため、ばね受けの中央部には小孔を設けるととも
に、弁ばねの他端には筒状部の中心線上でばね受け側に
延びる折曲げ部を形成し、その折曲げ部を小孔に、弁ば
ねとばね受けとの相対的な回転を許容して嵌合させたも
のである。 Since the present invention SUMMARY OF THE INVENTION The To achieve the above object, provided with a small hole in the center of the spring receiver, the spring receiving side on the center line of the cylindrical portion to the other end of the valve spring
Form a bent part that extends, and place the bent part in a small hole
The fitting is made by allowing relative rotation between the spring and the spring receiver.
It is.
【０００９】[0009]
【作用】本考案では、弁ばねに形成した筒状部軸線上で
延びる折曲げ部を、ばね受けの中央部に設けた小孔に対
して、弁ばねとばね受けとの相対的な回転を許容して嵌
合させるので、両者はいわばピン係合状態となる。従っ
て、その状態で筒状部内に組付けるようにすれば、両者
の半径方向の相対ずれが生じないので、止め具の筒状部
に形成した溝への装着作業は、ばね受けと弁ばねとの相
対ずれの有無を気にすることなく行なうことができる。
また、組付け時、ばね受けの小孔に弁ばねの折曲げ部を
嵌合し、弁ばねの一端を弁体に係合させた状態で、ばね
受けが回転されても、その回転力によって弁ばねによじ
れが生じることがない。 According to the present invention, on the axis of the cylindrical portion formed in the valve spring,
Extend the bent part to the small hole provided in the center of the spring receiver.
To allow relative rotation between the valve spring and the spring receiver.
Since engaged, both speak the pin engagement. Follow
Te, if so assembled into the cylindrical portion in such a state, since no radial relative displacement of both cylindrical portions of the stopper
The mounting work in the groove formed in the above can be performed without concern for the relative displacement between the spring receiver and the valve spring.
When assembling, bend the valve spring into the small hole of the spring holder.
With the one end of the valve spring engaged with the valve body,
Even if the receiver is rotated, the rotation force
This does not occur.
【００１０】[0010]
【実施例】以下、本考案の１実施例を図面を参照して説
明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１１】図１において、弁体１０を弁座８側に付勢
する弁ばね（コイルスプリング）３０は、図２および図
３に示すように、弁部９の段部９Ａに係合する一方端部
３３側が小径で他方端部３２側が大径の円錐形状のばね
であって、この弁ばね３０の他方端部３２側最終ターン
３１から他方端３４までの部分３５は、筒状部５の中心
軸に向って半径方向に伸びる部分３５Ａと該部分３５Ａ
から折曲されて上記中心軸に沿って伸びる折曲げ部３５
Ｂから成る。この弁ばね３０の他方端部３２を受けるば
ね受け４０は平板のばね受けであって、図４に示すよう
に、中央孔に小孔４１を形成されるとともにこの小孔４
１の回りに所定周方向間隔を隔てて形成された３個の通
孔４２を有し、筒状部５にシリンダ孔２底側端部の開口
部内側に止め具２０で抜止めされて配設されている。弁
ばね３０は、折曲げ部３５Ｂをばね受け４０の小孔４１
に貫通係合（ピン係合状態）して他方端部３２を該ばね
受け４０に係合し、一方端部３３を弁部９の段部９Ａに
係合してばね受け４０と弁部９との間に張設されてい
る。In FIG. 1, a valve spring (coil spring) 30 for urging the valve body 10 toward the valve seat 8 is engaged with a step 9A of the valve section 9 as shown in FIGS. The end 33 side is a conical spring with a small diameter and the other end 32 side is a large diameter conical spring. A portion 35 of the valve spring 30 from the final turn 31 on the other end 32 side to the other end 34 is formed of the cylindrical portion 5. A portion 35A extending radially toward the central axis and the portion 35A
Bent portion 35 which is bent from and extends along the central axis.
B. The spring support 40 for receiving the other end 32 of the valve spring 30 is a flat spring support, and has a small hole 41 formed in the center hole as shown in FIG.
1 and three through holes 42 formed at predetermined intervals in the circumferential direction. The through holes 42 are provided in the cylindrical portion 5 so as to be retained by the stopper 20 inside the opening at the bottom end of the cylinder hole 2. Has been established. The valve spring 30 fits the bent portion 35 </ b> B into the small hole 41 of the spring receiver 40.
, The other end 32 is engaged with the spring receiver 40, and the one end 33 is engaged with the step 9 A of the valve unit 9 to engage the spring receiver 40 with the valve unit 9. It is stretched between.
【００１２】弁体１０の軸１１の外周には、図５に示す
ように、複数本の軸方向に伸びるガイド突起１１Ａが周
方向所定間隔を隔てて形成されており、弁孔７には、こ
のガイド突起１１Ａの各々が摺動可能に嵌合する溝７Ａ
が形成されている。As shown in FIG. 5, a plurality of guide projections 11A extending in the axial direction are formed on the outer periphery of the shaft 11 of the valve body 10 at predetermined intervals in the circumferential direction. A groove 7A into which each of the guide protrusions 11A is slidably fitted.
Are formed.
【００１３】なお、図６と同一または相当する部分には
同一符号を付して示してある。The same or corresponding parts as in FIG. 6 are denoted by the same reference numerals.
【００１４】このように、本実施例では、弁ばね３０と
ばね受け４０とをピン係合状態とすることができるの
で、ばね受け４０と弁ばね３０の他方端部３２との半径
方向の相対ずれを防止することができ、弁ばね３０をこ
のピン係合状態で筒状部５内に入れて、止め具２０の溝
２１への装着作業を行なえば、ばね受け４０と弁ばね３
０との相対ずれの有無を気にすることなく、該装着作業
を行うことができるので、止め具２０の装着作業は簡単
な作業となり、その作業性が向上する。また、折曲げ部
３５Ｂと小孔４１とは、弁ばね３０とばね受け４０との
相対的回転を許容して、筒状部５の中心軸線上で互いに
嵌合するので、例えばね受け４０が筒状部５に対して回
転されても、その回転力により弁ばね３０が捩れたり、
捻られたりすることはなく、弁体１０を弁座８に向けて
付勢する弁ばね３０の張力が所期の張力に比し変化する
こともない。 As described above, in this embodiment, since the valve spring 30 and the spring receiver 40 can be brought into the pin engagement state, the relative position between the spring receiver 40 and the other end 32 of the valve spring 30 in the radial direction is increased. If the valve spring 30 is inserted into the cylindrical portion 5 in this pin engaged state and the work of attaching the stopper 20 to the groove 21 is performed, the spring receiver 40 and the valve spring 3 can be prevented.
Since the mounting operation can be performed without worrying about the presence or absence of a relative deviation from zero, the mounting operation of the stopper 20 is a simple operation, and the workability is improved. Also, the bent part
35B and the small hole 41 are formed between the valve spring 30 and the spring receiver 40.
Allowing relative rotation, each other on the central axis of the cylindrical portion 5
Since the fitting is performed, for example, the spring receiver 40 is turned with respect to the cylindrical portion 5.
Even if it is turned, the valve spring 30 is twisted by its rotational force,
With no twist, turn the valve body 10 toward the valve seat 8
The tension of the biasing valve spring 30 changes compared to the expected tension.
Not even.
【００１５】また、ばね受け４０に平板状の部材を利用
しているので、部材配置のためにピストン長の増加を最
小限のおさえることができ、ピストン長ひいてはマスタ
シリンダの全長を短縮することができる。Further, since a flat plate-shaped member is used for the spring receiver 40, an increase in the piston length can be suppressed to a minimum because of the member arrangement, and the overall length of the master cylinder and the piston length can be reduced. it can.
【００１６】[0016]
【考案の効果】本考案は以上説明した通り、弁ばねのば
ね受け側端部に筒状部の中心軸線上でばね受けに向かっ
て延びる折曲げ部を形成して、その折曲げ部を、弁ばね
とばね受けとの相対的な回転を許容して、ばね受けの中
央部に設けた小孔に嵌合させる構成としたことにより、
両者をこのピン係合状態で筒状部内に組付けるようにす
れば、両者の半径方向相対ずれが生じないので止め具の
筒状部への装着作業は、従来に比して、著しく簡単に行
なうことができ、弁組付けの作業性が向上する。しか
も、弁組付けの作業性を向上させるにしても、ばね受け
の回転によりコイルスプリング形の弁ばねに捩れが生じ
ることはなく、弁ばねの所期の機能が阻害されることを
防止できる。 [Effects of the Invention] As described above, the present invention provides a valve spring
At the end on the receiving side, face the spring receiver on the center axis of the cylindrical part.
To form a bent portion that extends, and the bent portion is
To allow relative rotation between the
By adopting a configuration that fits into the small hole provided in the center ,
If both are assembled in the cylindrical portion in this pin engaged state, there is no relative displacement between them in the radial direction, so the work of attaching the stopper to the cylindrical portion is much easier than in the past. And the workability of valve assembly is improved. Only
Even if the workability of valve assembly is improved,
Of the coil spring causes the torsion of the valve spring
That the intended function of the valve spring is impaired.
Can be prevented.
【図１】本考案の実施例を示す要部の縦断面図である。FIG. 1 is a longitudinal sectional view of a main part showing an embodiment of the present invention.
【図２】本考案の実施例における弁ばねを示す側面図で
ある。FIG. 2 is a side view showing the valve spring according to the embodiment of the present invention;
【図３】本考案の実施例における弁ばねの正面図であ
る。FIG. 3 is a front view of the valve spring according to the embodiment of the present invention;
【図４】本考案の実施例におけるばね受けの正面図であ
る。FIG. 4 is a front view of the spring receiver according to the embodiment of the present invention;
【図５】本考案の実施例におけるばね弁体の軸部を示す
断面図である。FIG. 5 is a cross-sectional view showing a shaft portion of the spring valve body according to the embodiment of the present invention.
【図６】従来のマスタシリンダの弁構造を示す縦断面図
である。FIG. 6 is a longitudinal sectional view showing a valve structure of a conventional master cylinder.
１ シリンダ本体 ２ シリンダ孔 ３ 圧力室 ４ ピストン ５ 筒状部 ７ 弁孔 ８ 弁座 ９ 弁部 １０ 弁体 １１ 軸 ２０ 止め具 ２１ 溝 ３０ 弁ばね ３５Ｂ 折曲げ部 DESCRIPTION OF SYMBOLS 1 Cylinder main body 2 Cylinder hole 3 Pressure chamber 4 Piston 5 Cylindrical part 7 Valve hole 8 Valve seat 9 Valve part 10 Valve element 11 Shaft 20 Stopper 21 Groove 30 Valve spring 35B Bent part
Claims (1)
を形成するとともに、その底中央にリザーバへ連絡され
る弁孔を形成して、前記筒状部内に、前記弁孔に嵌合す
る軸部および前記弁孔の筒状部内開口周辺部に形成され
た弁座に着座可能な弁部を有する弁体と、一端が該弁体
を前記弁座に向って付勢するコイルスプリング形の弁ば
ねと、該弁ばねの他端側に配置されるばね受けと、筒状
部の開口端側に形成された溝に嵌着され前記ばね受けの
抜止めを行なう止め具とを配設したマスタシリンダの弁
構造において、前記ばね受けの中央部には小孔を設ける
とともに、前記弁ばねの他端には前記筒状部の中心軸線
上で前記ばね受け側に延びる折曲げ部を形成し、該折曲
げ部を前記小孔に、前記弁ばねと前記ばね受けとの相対
的な回転を許容して嵌合させたマスタシリンダの弁構
造。1. A to form a tubular portion having a bottom in the pressure chamber side end portion of the piston, to form a valve hole which is communicated to the reservoir at its bottom center, the tubular portion, the valve hole A valve body having a valve portion that can be seated on a valve portion formed around a shaft portion to be fitted and an opening inside the cylindrical portion of the valve hole, and a coil having one end for urging the valve body toward the valve seat a spring-shaped valve spring, the spring receiving disposed on the other end of the valve spring, and is fitted in a groove formed on the opening end side of the cylindrical portion stopper performing retainer receiving said spring in the valve structure disposed the master cylinder, in the central portion of the receiving the spring provided with a small hole, the central axis of the cylindrical portion to the other end of the valve spring
And forming a bent portion extending to the spring receiving side on the upper side.
A valve portion is provided in the small hole, and a relative position between the valve spring and the spring receiver is provided.
The master cylinder valve structure fitted with allowance for typical rotation .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990402043U JP2582115Y2 (en) | 1990-12-26 | 1990-12-26 | Master cylinder valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990402043U JP2582115Y2 (en) | 1990-12-26 | 1990-12-26 | Master cylinder valve structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0491561U JPH0491561U (en) | 1992-08-10 |
| JP2582115Y2 true JP2582115Y2 (en) | 1998-09-30 |
Family
ID=31880044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990402043U Expired - Fee Related JP2582115Y2 (en) | 1990-12-26 | 1990-12-26 | Master cylinder valve structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2582115Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565815U (en) * | 1979-06-26 | 1981-01-19 | ||
| JPH0168976U (en) * | 1987-10-26 | 1989-05-08 |
-
1990
- 1990-12-26 JP JP1990402043U patent/JP2582115Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0491561U (en) | 1992-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6244295B1 (en) | Non-return valve, especially for a piston pump | |
| JP4508414B2 (en) | Piston pump | |
| US20070092389A1 (en) | Piston pump | |
| KR100478356B1 (en) | Master cylinder | |
| JP2582115Y2 (en) | Master cylinder valve structure | |
| JP2614236B2 (en) | Akyumulator | |
| JP3984751B2 (en) | Master cylinder | |
| AU5612894A (en) | Spring caging means | |
| JPS63251359A (en) | Master cylinder | |
| US6196349B1 (en) | Steering cylinder to axle housing retention system | |
| JP2547214Y2 (en) | Master cylinder valve structure | |
| JP4293713B2 (en) | Center valve type hydraulic master cylinder for vehicles | |
| JP3400158B2 (en) | Hydraulic pump | |
| JPH067017Y2 (en) | Master cylinder | |
| JP3253254B2 (en) | Center valve type master cylinder | |
| JP2575721Y2 (en) | Center valve type hydraulic master cylinder for vehicles | |
| JP4651793B2 (en) | Master cylinder | |
| CN114483568A (en) | Scavenge pump and scavenge pump assembly method | |
| JP2004237751A (en) | Center valve type hydraulic master cylinder for vehicle | |
| JPH0811700A (en) | Master cylinder | |
| JP2762557B2 (en) | Hydraulic booster | |
| JPH08192732A (en) | Master cylinder | |
| JP2002005369A (en) | Joint for coupling piping | |
| JP2002308083A (en) | Center valve type vehicular hydraulic master cylinder | |
| JP4506047B2 (en) | Master cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |