JPH0637040U - Reservoir cap - Google Patents
Reservoir capInfo
- Publication number
- JPH0637040U JPH0637040U JP7308192U JP7308192U JPH0637040U JP H0637040 U JPH0637040 U JP H0637040U JP 7308192 U JP7308192 U JP 7308192U JP 7308192 U JP7308192 U JP 7308192U JP H0637040 U JPH0637040 U JP H0637040U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- hole
- end wall
- reservoir
- expansion chamber
- 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.)
- Granted
Links
Landscapes
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
(57)【要約】
【目的】 リザーバの給油口筒に施されるキャップにお
いて、リザーバ内の貯留液が波立ち時でも通気孔から漏
出しないようにした部品点数の少ない構造を得る。
【構成】 キャップ本体2の取付筒6に嵌装される通気
路体3を、取付筒6内に通気孔8を介して外部に連通す
る膨脹室7に臨む端壁10を有する胴部11と、端壁1
0から下方へ延びる通気筒12と、この通気筒12及び
端壁10を貫通する縦孔13の上方開口端を覆う障壁部
14とから構成すると共に、これを合成樹脂で一体成形
し、障壁部14には縦孔13から膨脹室7に至る横孔1
6を設ける。
(57) [Abstract] [Purpose] To obtain a structure with a small number of parts in a cap provided on a fuel filler cylinder of a reservoir so that the stored liquid in the reservoir does not leak from a vent hole even when it is wavy. A body portion 11 having an end wall 10 facing the expansion chamber 7 communicating with the ventilation passage body 3 fitted into the mounting cylinder 6 of the cap main body 2 to the outside through a ventilation hole 8 in the mounting cylinder 6. , End wall 1
It is composed of a through-cylinder 12 extending downward from 0 and a barrier portion 14 covering an upper opening end of a vertical hole 13 penetrating the through-cylinder 12 and the end wall 10, and is integrally molded with a synthetic resin to form a barrier portion. A horizontal hole 1 extends from the vertical hole 13 to the expansion chamber 7 at 14.
6 is provided.
Description
【0001】[0001]
本考案は、マスタシリンダ等の油圧機器の作動油を貯留するリザーバ用のキャ ップに関し、特に、リザーバの給油口筒に装着されるキャップ本体と、給油口筒 内に突入するようキャップ本体に形成された取付筒に嵌装されて取付筒内に膨脹 室を画成する通気路体とからなり、キャップ本体に膨脹室を外部に連通する通気 孔を設ける一方、通気路体にリザーバ内を膨脹室に連通する縦孔を設けたものゝ 改良に関する。 The present invention relates to a cap for a reservoir that stores hydraulic oil of hydraulic equipment such as a master cylinder, and more particularly, to a cap body that is attached to a fuel filler tube of the reservoir and a cap body that protrudes into the fuel filler tube. The cap body is provided with a vent hole that connects the expansion chamber to the outside, and the cap body is provided with a vent hole that communicates with the outside of the expansion chamber. The present invention relates to an improvement provided with a vertical hole communicating with the expansion chamber.
【0002】[0002]
従来、この種のリザーバ用キャップにおいて、リザーバ内の貯留液の波立ち時 、通気路の縦孔に侵入して上昇する液を食止めてキャップ本体の通気孔からの漏 出を防止するために、前記縦孔の上方開口端を覆う障壁板を通気路体に嵌着した ものが知られている(例えば、実開昭58−168956号公報参照)。 Conventionally, in this type of reservoir cap, when the stored liquid in the reservoir swells, in order to prevent the rising liquid from entering the vertical hole of the air passage to prevent leakage from the air hole of the cap body, It is known that a barrier plate that covers the upper open end of the vertical hole is fitted to the ventilation passage body (see, for example, Japanese Utility Model Laid-Open No. 58-168956).
【0003】[0003]
上記の従来構造では、通気路体に別体の障壁板を嵌着するので、部品点数が多 くなり、コスト高を免れない。また障壁板には縦孔を膨脹室に連通する小孔を設 ける必要があるが、障壁板が薄物であることから、上記小孔は極めて浅いものと なり、したがってリザーバ内の貯留液が波立ったときには、縦孔を上昇した勢い の強い液が上記小孔を容易に通過してキャップ本体の通気孔に到達し、そこから 外部に漏出する惧れがある。 In the above-described conventional structure, since the separate barrier plate is fitted to the ventilation passage body, the number of parts is increased and the cost is inevitably high. In addition, it is necessary to provide a small hole for communicating the vertical hole with the expansion chamber in the barrier plate, but since the barrier plate is thin, the above small hole is extremely shallow, and therefore the liquid stored in the reservoir is corrugated. When standing up, there is a risk that the strong liquid that has risen up the vertical holes easily passes through the small holes, reaches the ventilation holes of the cap body, and leaks to the outside from there.
【0004】 本考案は、かゝる事情に鑑みてなされたもので、部品点数が少なく構造が簡単 で、しかもキャップ本体の通気孔からの液の漏出を効果的に防止し得る前記キャ ップを提供することを目的とする。The present invention has been made in view of such circumstances, has a small number of parts, has a simple structure, and can effectively prevent leakage of liquid from the vent hole of the cap body. The purpose is to provide.
【0005】[0005]
【課題を解決するための手段】 上記目的を達成するために、本考案は、キャップ本体の取付筒内に膨脹室を画 成する端壁を有して取付筒に嵌装される胴部と、前記端壁下面から垂下する通気 筒と、この通気筒及び前記端壁を貫通する縦孔の上方開口端を覆うべく前記端壁 上面から隆起する障壁部とからなる通気路体を一体成形し、その障壁部には、縦 孔から横方向へ延びて膨脹室に開口する横孔を設けたことを特徴とする。[Means for Solving the Problems] To achieve the above object, the present invention provides a body part having an end wall defining an expansion chamber in a mounting body of a cap body and fitted to the mounting body. An integrally formed vent passage body is formed of a ventilation cylinder that hangs from the lower surface of the end wall and a barrier portion that rises from the upper surface of the end wall to cover the upper opening end of a vertical hole that penetrates the communication cylinder and the end wall. The barrier portion is characterized by having a lateral hole extending laterally from the vertical hole and opening to the expansion chamber.
【0006】[0006]
以下、図面により本考案の一実施例について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
【0007】 先ず、図1及び図2において、自動車のブレーキ用マスタシリンダM上に、そ れの作動油を貯留するリザーバRが付設される。このリザーバRへの作動油の注 入は、リザーバR上部に突設された給油口筒1から行われ、この給油口筒1は通 常、キャップCにより閉鎖される。First, in FIGS. 1 and 2, a reservoir R for storing the hydraulic oil is provided on a brake master cylinder M of an automobile. The injection of hydraulic oil into the reservoir R is performed from the oil supply port cylinder 1 provided on the upper portion of the reservoir R, and the oil supply port cylinder 1 is normally closed by the cap C.
【0008】 キャップCは、ゴム等の弾性材からなるキャップ本体2と、合成樹脂製の通気 路体3とから構成される。キャップ本体2は、給油口筒1の上端面に密接するシ ール面4aを有するカップ状の覆蓋部4と、この覆蓋部4下面に一体に突設され て給油口筒1内周面に密接する環状のシールリップ5と、このシールリップ5の 内側で同じく覆蓋部4下面に一体に突設された、通気路体3のための取付筒6と からなっており、覆蓋部4の中心部には、取付筒6内に区画される後述の膨脹室 7を外部に連通する通気孔8が穿設される。また取付筒6の内周面には環状の取 付溝9が形成される。The cap C is composed of a cap body 2 made of an elastic material such as rubber and a ventilation passage body 3 made of synthetic resin. The cap body 2 has a cup-shaped cover lid portion 4 having a seal surface 4a that is in close contact with the upper end surface of the fuel filler cylinder 1, and a projection integrally formed on the lower surface of the cover lid 4 to cover the inner peripheral surface of the fuel filler cylinder 1. It is composed of an intimate annular seal lip 5 and an attachment tube 6 for the ventilation passage body 3 which is also integrally projecting inside the seal lip 5 on the lower surface of the cover lid portion 4, and the center of the cover lid portion 4 is formed. The portion is provided with a vent hole 8 for communicating an expansion chamber 7 (described later) defined in the mounting cylinder 6 to the outside. An annular mounting groove 9 is formed on the inner peripheral surface of the mounting cylinder 6.
【0009】 一方、通気路体3は合成樹脂により単一部品として一体成形されたもので、図 2ないし図4に示すように、外周部10aがフランジ状に突出する端壁10によ り上面が閉塞された胴部11と、端壁10の中心部から胴部11よりも下方へ垂 下する通気筒12と、この通気筒12及び端壁10の中心部を貫通する縦孔13 の上方開口端を覆うように端壁10の上面中心部から隆起した障壁部14とを備 える。端壁10の上面は、その中心部に向って深くなる逆円錐面15に形成され ており、障壁部14には、縦孔13を障壁部14の外側に連通する複数の横孔1 6が上記逆円錐面15の母線に沿って穿設される。On the other hand, the air passage body 3 is integrally molded of a synthetic resin as a single component, and as shown in FIGS. 2 to 4, the outer peripheral portion 10 a has an upper surface formed by a flange-shaped end wall 10. The body portion 11 having a closed body, the through cylinder 12 that hangs downward from the center portion of the end wall 10 below the body portion 11, and the upper portion of the vertical hole 13 that passes through the through cylinder 12 and the center portion of the end wall 10. A barrier portion 14 is provided so as to cover the opening end and rise from the center of the upper surface of the end wall 10. The upper surface of the end wall 10 is formed as an inverted conical surface 15 that becomes deeper toward the center thereof, and the barrier portion 14 has a plurality of horizontal holes 16 that connect the vertical holes 13 to the outside of the barrier portion 14. The holes are formed along the generatrix of the inverted conical surface 15.
【0010】 また端壁10には、その上面から突出する案内筒部17が一体に形成され、こ の案内筒部17には、上記横孔16の形成用中子ピンの設置を可能にする切欠1 8が設けられる。A guide cylinder portion 17 protruding from the upper surface of the end wall 10 is formed integrally with the end wall 10. The guide cylinder portion 17 allows installation of a core pin for forming the lateral hole 16. A cutout 18 is provided.
【0011】 さらに、胴部11及び通気筒12には、それらの間を連結する放射状のリブ1 9が一体に形成される。Further, the body 11 and the through-cylinder 12 are integrally formed with radial ribs 19 connecting them.
【0012】 このように構成された通気路体3は、キャップ本体2の取付筒6内に、その下 端開口部を押し広げながら案内筒部17を先頭にして嵌入し、端壁10のフラン ジ状外周部10aを取付溝9に弾力的に嵌込むことにより、取付筒6に装着され る。而して、取付筒6内には端壁10の逆円錐面15により膨脹室7が画成され る。The air passage body 3 configured as described above is fitted into the mounting cylinder 6 of the cap body 2 with the guide cylinder portion 17 at the beginning while expanding the lower end opening portion thereof, and the flange of the end wall 10 is fitted. It is mounted on the mounting cylinder 6 by elastically fitting the j-shaped outer peripheral portion 10 a into the mounting groove 9. Thus, the expansion chamber 7 is defined in the mounting cylinder 6 by the inverted conical surface 15 of the end wall 10.
【0013】 尚、図1において、符号20はリザーバR内に貯留される作動油を示す。In FIG. 1, reference numeral 20 indicates hydraulic oil stored in the reservoir R.
【0014】 次にこの実施例の作用について説明する。Next, the operation of this embodiment will be described.
【0015】 給油口筒1へのキャップCの装着状態では、キャップ本体2のシール面4aが 給油口筒1上端面に、またシールリップ5が給油口筒1内周面にそれぞれ弾力的 に密接するので、リザーバR内の作動油が給油口筒1から漏出することを防止す ることができる。When the cap C is attached to the filler cylinder 1, the sealing surface 4a of the cap body 2 elastically and closely contacts the upper end surface of the filler cylinder 1, and the seal lip 5 elastically closely contacts the inner peripheral surface of the filler cylinder 1. Therefore, it is possible to prevent the hydraulic oil in the reservoir R from leaking out from the filler neck 1.
【0016】 また、リザーバR内の上部空間は、通気路体3の縦孔13及び横孔16、並び にキャップ本体2の膨脹室7及び通気孔8を通して大気と連通するので、リザー バR内は常に大気圧に保たれ、リザーバRからマスタシリンダMへの作動油の供 給を常に円滑に行うことができる。Further, since the upper space in the reservoir R communicates with the atmosphere through the vertical hole 13 and the horizontal hole 16 of the ventilation path body 3, and the expansion chamber 7 and the ventilation hole 8 of the cap body 2, the inside of the reservoir R Is always maintained at the atmospheric pressure, and the hydraulic oil can be smoothly supplied from the reservoir R to the master cylinder M.
【0017】 車両の振動等によりリザーバR内の作動油20が波立って、一部の油が通気路 体3の縦孔13に侵入して勢いよく上昇しても、その油は障壁部14に当って減 衰し、縦孔13を流下する。また、若し障壁部14に当った油が勢い余って横孔 16に向って進路を急激に曲げた場合には、更に大きな減衰が生じるため、その 油が横孔16から膨脹室7に出ても、上方の通気孔8までは到達し得ない。そし て、膨脹室7で勢いを失った油は逆円錐面15を下り、再び横孔16に入り、縦 孔13を流下してリザーバR内に戻ることになる。このようにして、リザーバR 内の波立った作動油が通気孔8から漏出することを通気路体3により防止するこ とができる。Even if a part of the oil enters the vertical hole 13 of the air passage body 3 and vigorously rises due to the vibration of the hydraulic oil 20 in the reservoir R caused by the vibration of the vehicle or the like, the oil remains in the barrier portion 14. When it hits, the vertical hole 13 flows down. Further, if the oil hitting the barrier portion 14 is excessively forced and the path is sharply bent toward the lateral hole 16, a larger amount of damping will occur, so that the oil will flow out of the lateral hole 16 into the expansion chamber 7. However, the upper vent hole 8 cannot be reached. Then, the oil that lost its momentum in the expansion chamber 7 descends from the inverted conical surface 15, enters the horizontal hole 16 again, flows down the vertical hole 13, and returns into the reservoir R. In this way, the vent passage body 3 can prevent the wavy hydraulic oil in the reservoir R 2 from leaking from the vent hole 8.
【0018】 ところで、逆円錐面15を有する胴部11、縦孔13を有する通気筒12、及 び横孔16を有する障壁部14を備えた通気路体3は、合成樹脂をもって一部品 として一体成形され、これをキャップ本体2の取付筒6に弾力的に嵌込むだけで キャップCが構成されるので、このキャップCは部品点数が少ない上、組立てが 極めて容易である。By the way, the air passage body 3 including the body portion 11 having the inverted conical surface 15, the through cylinder 12 having the vertical hole 13, and the barrier portion 14 having the horizontal hole 16 is integrally made of synthetic resin as one component. Since the cap C is formed by molding and elastically fitting it into the mounting cylinder 6 of the cap body 2, the cap C has a small number of parts and is extremely easy to assemble.
【0019】[0019]
以上のように本考案によれば、キャップ本体の取付筒内に膨脹室を画成する端 壁を有して取付筒に嵌装される胴部と、前記端壁下面から垂下する通気筒と、こ の通気筒及び前記端壁を貫通する縦孔の上方開口端を覆うべく前記端壁上面から 隆起する障壁部とからなる通気路体を一体成形し、その障壁部には、縦孔から横 方向へ延びて膨脹室に開口する横孔を設けたので、リザーバ内の貯留液の波立ち 時、その液が勢い良く縦孔を上昇しても、これを障壁部及び横孔により効果的に 減衰させて通気孔からの漏出を防止することができ、しかも上記縦孔、横孔及び 障壁部を有する通気路体が一体成形品であることから、キャップの部品点数の削 減を果し、コストダウンを図ることができる。 As described above, according to the present invention, a body portion having an end wall defining an expansion chamber in the mounting cylinder of the cap body and fitted into the mounting cylinder, and a through cylinder hanging from the lower surface of the end wall. An integrally formed vent passage body is composed of the through-cylinder and a barrier portion protruding from the upper surface of the end wall so as to cover the upper opening end of the vertical hole penetrating the end wall. Since a horizontal hole that extends in the horizontal direction and opens to the expansion chamber is provided, even if the stored liquid in the reservoir swells up the vertical hole vigorously, it can be effectively protected by the barrier and horizontal hole. Attenuation can be prevented to prevent leakage from the ventilation holes, and since the ventilation passage body having the vertical holes, the horizontal holes, and the barrier portion is an integrally molded product, the number of cap parts can be reduced. The cost can be reduced.
【図面の簡単な説明】[Brief description of drawings]
【図1】本考案のキャップを備えたマスタシリンダ用リ
ザーバの一部縦断側面図FIG. 1 is a side view, partly in longitudinal section, of a master cylinder reservoir equipped with a cap of the present invention.
【図2】図1の2−2線拡大断面図FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.
【図3】図2の3矢視図FIG. 3 is a view on arrow 3 of FIG.
【図4】図2の4矢視図FIG. 4 is a view on arrow 4 of FIG.
1 給油口筒 2 キャップ本体 3 通気路体 6 取付筒 7 膨脹室 8 通気孔 10 端壁 11 胴部 12 通気筒 13 縦孔 14 障壁部 16 横孔 C キャップ R リザーバ DESCRIPTION OF SYMBOLS 1 Fuel filler cylinder 2 Cap body 3 Ventilation body 6 Mounting cylinder 7 Expansion chamber 8 Vent hole 10 End wall 11 Body part 12 Through cylinder 13 Vertical hole 14 Barrier part 16 Horizontal hole C Cap R Reservoir
Claims (1)
されるキャップ本体(2)と、給油口筒(1)内に突入
するようキャップ本体(2)に形成された取付筒(6)
に嵌装されて取付筒(6)内に膨脹室(7)を画成する
通気路体(3)とからなり、キャップ本体(2)に膨脹
室(7)を外部に連通する通気孔(8)を設ける一方、
通気路体(3)にリザーバ(R)内を膨脹室(7)に連
通する縦孔(13)を設けた、リザーバ用キャップにお
いて、 キャップ本体(2)の取付筒(6)内に膨脹室(7)を
画成する端壁(10)を有して取付筒(6)に嵌装され
る胴部(11)と、前記端壁(10)下面から垂下する
通気筒(12)と、この通気筒(12)及び前記端壁
(10)を貫通する縦孔(13)の上方開口端を覆うべ
く前記端壁(10)上面から隆起する障壁部(14)と
からなる通気路体(3)を一体成形し、その障壁部(1
4)には、縦孔(13)から横方向へ延びて膨脹室
(7)に開口する横孔(16)を設けたことを特徴とす
る、リザーバ用キャップ。1. A cap body (2) mounted on a fuel filler tube (1) of a reservoir (R), and a mounting barrel (2) formed on the cap body (2) so as to project into the fuel filler tube (1). 6)
And a vent passage body (3) which is fitted into the mounting cylinder (6) to define an expansion chamber (7) in the mounting cylinder (6), and the cap body (2) communicates the expansion chamber (7) to the outside with a ventilation hole (3). While providing 8),
A reservoir cap having a vent hole body (3) provided with a vertical hole (13) for communicating the inside of the reservoir (R) with the expansion chamber (7). The expansion chamber is provided in the mounting cylinder (6) of the cap body (2). A body portion (11) fitted to the mounting cylinder (6) having an end wall (10) defining (7), a through cylinder (12) hanging from the lower surface of the end wall (10), An air passageway body (which includes the through-cylinder (12) and a barrier portion (14) protruding from the upper surface of the end wall (10) to cover the upper opening end of the vertical hole (13) penetrating the end wall (10) ( 3) is integrally molded, and the barrier part (1
4) A reservoir cap, characterized in that a lateral hole (16) extending laterally from the vertical hole (13) and opening to the expansion chamber (7) is provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992073081U JP2568522Y2 (en) | 1992-10-20 | 1992-10-20 | Reservoir cap |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992073081U JP2568522Y2 (en) | 1992-10-20 | 1992-10-20 | Reservoir cap |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0637040U true JPH0637040U (en) | 1994-05-17 |
JP2568522Y2 JP2568522Y2 (en) | 1998-04-15 |
Family
ID=13508030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1992073081U Expired - Lifetime JP2568522Y2 (en) | 1992-10-20 | 1992-10-20 | Reservoir cap |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2568522Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013136271A (en) * | 2011-12-28 | 2013-07-11 | Bosch Corp | Cap and reservoir tank using the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58168956U (en) * | 1982-05-07 | 1983-11-11 | アイシン精機株式会社 | Hydraulic cylinder with integrated reservoir |
JPH04104067U (en) * | 1991-02-15 | 1992-09-08 | 日信工業株式会社 | Reservoir for master cylinder |
-
1992
- 1992-10-20 JP JP1992073081U patent/JP2568522Y2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58168956U (en) * | 1982-05-07 | 1983-11-11 | アイシン精機株式会社 | Hydraulic cylinder with integrated reservoir |
JPH04104067U (en) * | 1991-02-15 | 1992-09-08 | 日信工業株式会社 | Reservoir for master cylinder |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013136271A (en) * | 2011-12-28 | 2013-07-11 | Bosch Corp | Cap and reservoir tank using the same |
Also Published As
Publication number | Publication date |
---|---|
JP2568522Y2 (en) | 1998-04-15 |
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