JPH0445978Y2 - - Google Patents
Info
- Publication number
- JPH0445978Y2 JPH0445978Y2 JP8925888U JP8925888U JPH0445978Y2 JP H0445978 Y2 JPH0445978 Y2 JP H0445978Y2 JP 8925888 U JP8925888 U JP 8925888U JP 8925888 U JP8925888 U JP 8925888U JP H0445978 Y2 JPH0445978 Y2 JP H0445978Y2
- Authority
- JP
- Japan
- Prior art keywords
- opening
- connection port
- stepped
- reservoir tank
- tank
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Transmission Of Braking Force In Braking Systems (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は２系統のブレーキ液圧を発生するマス
タシリンダに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a master cylinder that generates two systems of brake fluid pressure.
［従来の技術］
従来、リザーバタンクに蓄積されているブレー
キ液を２系統のブレーキ液圧発生室へ供給する構
造の２系統マスタシリンダとして第４図に示すも
のがある。構造を説明すると、同図において、負
圧ブースタのシエル１にマスタシリンダのシリン
ダボデイ２が密着・固定し、シリンダボデイ２内
には負圧ブースタの倍力を受けて作動するプライ
マリピストン（図示せず）及び該プライマリピス
トンに連係して作動するセカンダリピストン（図
示せず）が設けられ、シリンダボデイ２の側端に
リザーバタンク３が固着している。リザーバタン
ク３の底部には下側へ突出する筒状の接続口４が
設けられ、シリンダボデイ２の側壁に設けられた
凹部５に嵌着している。また、凹部５の中央部分
には板状の仕切部６が設けられ、仕切部６で画成
された一方の凹部とプライマリピストンに関わる
液圧発生室（図示せず）が第１の連通路７にて連
通し、他方の凹部とセカンダリピストンに関わる
液圧発生室（図示せず）が第２の連通路８にて連
通している。即ち、リザーバタンク３内に蓄積さ
れたブレーキ液が仕切部６で仕切られた開口部４
を通り、更にプライマリピストン側へは連通路
７、セカンダリピストン側へは連通路８を通つて
供給される。[Prior Art] Conventionally, there is a two-system master cylinder shown in FIG. 4 that has a structure in which brake fluid stored in a reservoir tank is supplied to two systems of brake fluid pressure generating chambers. To explain the structure, in the figure, the cylinder body 2 of the master cylinder is tightly attached and fixed to the shell 1 of the negative pressure booster, and within the cylinder body 2 is a primary piston (not shown) that operates under the boost of the negative pressure booster. A secondary piston (not shown) that operates in conjunction with the primary piston is provided, and a reservoir tank 3 is fixed to the side end of the cylinder body 2. A cylindrical connection port 4 projecting downward is provided at the bottom of the reservoir tank 3, and is fitted into a recess 5 provided in the side wall of the cylinder body 2. A plate-shaped partition 6 is provided in the center of the recess 5, and one recess defined by the partition 6 and a hydraulic pressure generation chamber (not shown) related to the primary piston are connected to a first communication path. 7, and the other recess communicates with a hydraulic pressure generating chamber (not shown) related to the secondary piston through a second communication path 8. That is, the brake fluid accumulated in the reservoir tank 3 is separated from the opening 4 by the partition 6.
It is further supplied to the primary piston side through a communication path 7 and to the secondary piston side through a communication path 8.
このように、リザーバタンク３の接続口を１個
にし、シリンダボデイ２側で２つに仕切つてプラ
イマリピストンとセカンダリピストン側へのブレ
ーキ液を分けることにより、２個のリザーバタン
クを２か所の接続口を介してシリンダボデイに固
着する場合よりも、２系統マスタシリンダの全長
の短縮化を図つていた。 In this way, by using one connection port for the reservoir tank 3 and dividing it into two on the cylinder body 2 side to separate the brake fluid to the primary piston and secondary piston side, the two reservoir tanks can be connected to two locations. The overall length of the two-system master cylinder was made shorter than when it was fixed to the cylinder body through a connection port.
［考案が解決しようとする課題］
しかしながら、このような従来の構成のマスタ
シリンダにあつては、片側の液量を確保するため
にシリンダボデイのリザーバタンク接続部の大き
さを確保する必要上、片側液量が増加した場合に
はシリンダボデイのタンク接続部が大型となる問
題があつた。[Problems to be solved by the invention] However, in the case of a master cylinder with such a conventional configuration, it is necessary to ensure the size of the reservoir tank connection part of the cylinder body in order to secure the liquid volume on one side. When the liquid volume on one side increased, there was a problem that the tank connection part of the cylinder body became large.
本考案はこのような課題に鑑みてなされたもの
であり、リザーバタンク接続口を１個とし、且つ
小型化が得られるマスタシリンダを提供すること
を目的とする。 The present invention has been made in view of these problems, and an object of the present invention is to provide a master cylinder that has only one reservoir tank connection port and that can be downsized.
［課題を解決するための手段］
この目的を達成するため本考案は、２系統のブ
レーキ液圧を発生するマスタシリンダにおいて、
シリンダボデイに単一のリザーバタンク接続用の
段付穴を形成し、該段付穴の底部に底部に一方の
液圧発生室へ通じる連通路を開口すると共に該段
付穴の段部に他方の液圧発生室へ通じる連通路を
開口し、該段付穴に嵌着固定する前記リザーバタ
ンクの接続口を段付接続口とし、該段付接続口の
先端に第１の開口を形成すると共に段部に第２の
開口を形成し、該第１と第２の開口を仕切る仕切
壁をリザーバタンク内に形成した。[Means for Solving the Problem] In order to achieve this object, the present invention provides a master cylinder that generates two systems of brake fluid pressure.
A stepped hole for connecting a single reservoir tank is formed in the cylinder body, and a communication passage leading to one hydraulic pressure generation chamber is opened at the bottom of the stepped hole, and a communication path leading to one hydraulic pressure generation chamber is opened at the bottom of the stepped hole, and the other is opened at the bottom of the stepped hole. A communication passage leading to a hydraulic pressure generation chamber is opened, a connection port of the reservoir tank that is fitted and fixed in the stepped hole is a stepped connection port, and a first opening is formed at the tip of the stepped connection port. At the same time, a second opening was formed in the stepped portion, and a partition wall separating the first and second openings was formed in the reservoir tank.
［作用］
このような構造を有するマスタシリンダにあつ
ては、前記仕切壁が第１、第２の開口を分離する
ように作用することから、片側の液供給系統が失
陥しても他方の系統へのブレーキ液の供給を確保
することができると共に、リザーバタンク接続口
を単一化してもシリンダボデイを大型化しなくて
済む。[Function] In the master cylinder having such a structure, the partition wall acts to separate the first and second openings, so even if one side's liquid supply system fails, the other side's It is possible to ensure the supply of brake fluid to the system, and even if the reservoir tank connection port is unified, there is no need to increase the size of the cylinder body.
［実施例］
以下、本考案によるマスタシリンダの一実施例
を図面と共に説明する。まず、構成を述べると、
第１図において、９は負圧ブースタのシエル、１
０はマスタシリンダのシリンダボデイ、１１はフ
ツトペダル等により踏力をマスタシリンダ側へ伝
達するロツドであり、ロツド１１がマスタシリン
ダ側へ移動することによつて、シリンダボデイ１
０内に設けられているプライマリピストン（図示
せず）及びセカンダリピストン（図示せず）を作
動させ、これらピストンに関わるそれぞれの液圧
発生室を介してそれぞれのブレーキ液圧を制御す
るようになつている。[Example] Hereinafter, an example of the master cylinder according to the present invention will be described with reference to the drawings. First, let's talk about the structure.
In Figure 1, 9 is the shell of the negative pressure booster, 1
0 is the cylinder body of the master cylinder, and 11 is a rod that transmits pedal force from a foot pedal or the like to the master cylinder side.As the rod 11 moves toward the master cylinder side, the cylinder body 1
The primary piston (not shown) and the secondary piston (not shown) provided in the 0 are actuated, and the respective brake fluid pressures are controlled through the respective fluid pressure generation chambers related to these pistons. ing.
更に、シリンダボデイ１０の側端には、内側が
小径で外側が大径となつている段付穴１２が形成
され、小径側の穴の先端部には上記一方の液圧発
生室に連通する連通路１３が開口し、大径の段部
の底端部には他方の液圧発生室に連通する連通路
１４が開口している。 Furthermore, a stepped hole 12 is formed at the side end of the cylinder body 10, with a small diameter on the inside and a large diameter on the outside, and the tip of the hole on the small diameter side communicates with one of the hydraulic pressure generating chambers. A communication passage 13 is open, and a communication passage 14 that communicates with the other hydraulic pressure generation chamber is opened at the bottom end of the large-diameter stepped portion.
１５はブレーキ液圧を蓄積しておくリザーバタ
ンクであり、内部にはブレーキ液の残量を検出す
るためのフロート１６が収容されている。リザー
バタンク１５の底端部には、段付穴１２の内側壁
に嵌着するような段付外形を有する接続口１７が
突出して形成され、接続口１７の先端部には連通
路１３に通じる第１の開口１８が設けられ、大径
の段付部分には連通路１４に通じる第２の開口１
９が設けられている。 Reference numeral 15 denotes a reservoir tank for accumulating brake fluid pressure, and a float 16 for detecting the remaining amount of brake fluid is housed inside. A connecting port 17 having a stepped outer shape that fits into the inner wall of the stepped hole 12 is formed protruding from the bottom end of the reservoir tank 15, and the tip of the connecting port 17 communicates with the communication path 13. A first opening 18 is provided, and a second opening 1 communicating with the communication path 14 is provided in the large diameter stepped portion.
9 is provided.
２０は第１の開口１８と第２の開口１９との間
を区切る板状の仕切壁であり、リザーバタンク１
５の室内まで延設されている。尚、シリンダボデ
イ２はリザーバタンク１５に収容されたフロート
１６の移動方向が水平面Ａと直交するように取付
けられる。 20 is a plate-shaped partition wall that separates the first opening 18 and the second opening 19;
It extends to the 5th room. Incidentally, the cylinder body 2 is attached so that the moving direction of the float 16 housed in the reservoir tank 15 is perpendicular to the horizontal plane A.
第２図は接続口１７の側面構造を示し、シリン
ダボデイ１０の段付穴１２の適合した外側形状を
有し、嵌着を確実にするための２個のＯリング２
１，２２を嵌着する溝２３，２４が形成され、リ
ザーバタンク１５よりのブレーキ液は矢印ｙ１，
ｙ２の方向へ流出する。第３図は接続口１７のＸ
−Ｘ線断面図であり、仕切壁２０が第１、第２の
開口１８，１９間を区切つており、これら開口１
８，１９へのブレーキ液を分割する。 FIG. 2 shows the side structure of the connection port 17, which has an external shape adapted to the stepped hole 12 of the cylinder body 10 and has two O-rings 2 to ensure a secure fit.
Grooves 23 and 24 are formed to fit the brake fluid 1 and 22, and the brake fluid from the reservoir tank 15 flows through the arrows y1 and 22.
It flows out in the direction of y2. Figure 3 shows the X of connection port 17.
- An X-ray cross-sectional view, in which the partition wall 20 separates the first and second openings 18 and 19, and these openings 1
Divide the brake fluid into 8 and 19.
即ち、仕切壁２０の頂部２０ａよりもブレーキ
液の液面が低下した場合には、開口１８，１９の
それぞれのブレーキ液は完全に分割され、一方の
開口側のブレーキ液が失陥しても、他方の開口側
のブレーキ液は確保されるようになつている。 That is, when the liquid level of the brake fluid is lower than the top 20a of the partition wall 20, the brake fluid in each of the openings 18 and 19 is completely divided, and even if the brake fluid on one opening side fails, , the brake fluid on the other opening side is secured.
次に、組付け工程を述べると、接続口１７の溝
２３，２４にＯリング２１，２２を装着した状態
で、接続口１７を段付穴１２に嵌着し、シリンダ
ボデイ１０の一端にネジ止め等によつて更に固定
する。このように、組付けが極めて容易であり、
また、取り外しも極めて容易となつている。 Next, to describe the assembly process, with the O-rings 21 and 22 attached to the grooves 23 and 24 of the connection port 17, the connection port 17 is fitted into the stepped hole 12, and one end of the cylinder body 10 is screwed. Further secure with a stopper, etc. In this way, assembly is extremely easy,
It is also extremely easy to remove.
［考案の効果］
以上説明してきたようにこの考案によれば、リ
ザーバタンクの接続口を１つとし、シリンダボデ
イの側壁に設けた段付穴に嵌着させると共に、接
続口の内側に２系統の開口を分離する仕切壁を設
けたので、リザーバタンクの接続口を単一化して
も、シリンダボデイを大型化することなく、充分
な片側液量を確保することができる。[Effects of the invention] As explained above, according to this invention, the reservoir tank has one connection port, which is fitted into a stepped hole provided on the side wall of the cylinder body, and two systems are installed inside the connection port. Since a partition wall is provided to separate the openings of the reservoir tank, even if the connection port of the reservoir tank is unified, a sufficient amount of liquid can be secured on one side without increasing the size of the cylinder body.
第１図は本考案によるマスタシリンダの一実施
例の構造を示す要部断面図、第２図は、第１図に
おけるリザーバタンクの接続口の外形を示す側面
図、第３図は第２図のＸ−Ｘ線断面図、第４図は
従来のマスタシリンダの一例を示す要部断面図で
ある。
１０……シリンダボデイ、１２……段付穴、１
３，１４……連通路、１５……リザーバタンク、
１７……接続口、１８，１９……開口、２０……
仕切壁、２０ａ……頂部。
Fig. 1 is a sectional view of a main part showing the structure of an embodiment of the master cylinder according to the present invention, Fig. 2 is a side view showing the external shape of the connection port of the reservoir tank in Fig. FIG. 4 is a cross-sectional view of essential parts showing an example of a conventional master cylinder. 10...Cylinder body, 12...Stepped hole, 1
3, 14...Communication path, 15...Reservoir tank,
17... Connection port, 18, 19... Opening, 20...
Partition wall, 20a...top.
Claims (1)
のそれぞれより個別にブレーキ液を供給して２系
統の液圧を発生するマスタシリンダにおいて、 シリンダボデイに単一のタンク接続用の段付穴
を形成し、該段付穴の底部に一方の液圧発生室の
連通路を開口すると共に該段付穴の段部に他方の
液圧発生室の連通路を開口し、該段付穴に嵌着固
定する前記リザーバタンクの接続口を段付接続口
とし、該段付接続口先端に第１の開口を形成する
と共に段部に第２の開口を形成し、該第１と第２
の開口を仕切る仕切壁をタンク内に形成したこと
を特徴とするマスタシリンダ。[Claim for Utility Model Registration] In a master cylinder that generates two systems of hydraulic pressure by supplying brake fluid individually from two partitioned tank chambers in a reservoir tank, a single tank is connected to the cylinder body. forming a stepped hole for the step, opening a communication passage for one hydraulic pressure generation chamber at the bottom of the stepped hole, and opening a communication passage for the other hydraulic pressure generation chamber at the stepped portion of the stepped hole; A connection port of the reservoir tank that is fitted and fixed in the stepped hole is a stepped connection port, a first opening is formed at the tip of the stepped connection port, and a second opening is formed in the stepped portion, and the second opening is formed at the stepped portion. 1st and 2nd
A master cylinder characterized in that a partition wall is formed inside a tank to partition an opening of the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8925888U JPH0445978Y2 (en) | 1988-07-05 | 1988-07-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8925888U JPH0445978Y2 (en) | 1988-07-05 | 1988-07-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0210170U JPH0210170U (en) | 1990-01-23 |
| JPH0445978Y2 true JPH0445978Y2 (en) | 1992-10-28 |
Family
ID=31313810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8925888U Expired JPH0445978Y2 (en) | 1988-07-05 | 1988-07-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0445978Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2558735Y2 (en) * | 1992-03-30 | 1998-01-14 | スズキ株式会社 | Reservoir tank |
-
1988
- 1988-07-05 JP JP8925888U patent/JPH0445978Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0210170U (en) | 1990-01-23 |
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