JP2540382Y2 - Reservoir breather device - Google Patents
Reservoir breather deviceInfo
- Publication number
- JP2540382Y2 JP2540382Y2 JP32693U JP32693U JP2540382Y2 JP 2540382 Y2 JP2540382 Y2 JP 2540382Y2 JP 32693 U JP32693 U JP 32693U JP 32693 U JP32693 U JP 32693U JP 2540382 Y2 JP2540382 Y2 JP 2540382Y2
- Authority
- JP
- Japan
- Prior art keywords
- groove
- reservoir
- annular
- fuel filler
- 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.)
- Expired - Lifetime
Links
Landscapes
- Transmission Of Braking Force In Braking Systems (AREA)
Description
【0001】[0001]
【産業上の利用分野】本考案は、自動車のブレーキマス
タシリンダ等の油圧機器の作動油を貯留するリザーバの
ブリーザ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breather device for a reservoir for storing hydraulic oil for hydraulic equipment such as a brake master cylinder of an automobile.
【0002】[0002]
【従来の技術】車両用リザーバのブリーザ装置として、
例えば実公昭37−16360号公報に開示されている
ように、リザーバの給油口に装着されるゴム製のキャッ
プに膨脹室を形成し、この膨脹室の上壁及び底壁に、大
気に開放する外側通気孔及びリザーバ内部に連なる内側
通気孔を設けたものが知られている。2. Description of the Related Art As a breather device for a vehicle reservoir,
For example, as disclosed in Japanese Utility Model Publication No. 37-16360, an expansion chamber is formed in a rubber cap attached to a filler port of a reservoir, and the expansion chamber is open to the atmosphere at the top and bottom walls thereof. It is known to provide an outer vent and an inner vent connected to the inside of the reservoir.
【0003】[0003]
【考案が解決しようとする課題】上記のような従来のブ
リーザ装置では、リザーバ内の油面の波立ち時、外側通
気孔を上昇した油の飛沫を膨脹室で減衰して、キャップ
外への漏出を防止し得るものゝ、洗車時、水の飛沫が外
側通気孔に侵入した場合には、直ちに膨脹室に入り、内
側通気孔からリザーバ内に侵入してしまうという欠点が
ある。In the conventional breather described above, when the oil level in the reservoir rises, the oil droplets rising from the outer ventilation holes are attenuated in the expansion chamber and leak out of the cap. However, if water splashes into the outside vent during car washing, there is a drawback that the water immediately enters the expansion chamber and enters the reservoir through the inside vent.
【0004】そこで本考案は、外部からの水の侵入と内
部からの油の漏出を共に防止し得る構造簡単な、リザー
バのブリーザ装置を提供することを目的とする。Accordingly, an object of the present invention is to provide a breather device for a reservoir having a simple structure capable of preventing both intrusion of water from the outside and leakage of oil from the inside.
【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、リザーバの給油口筒に装着される弾性材
料からなるキャップに、給油口筒上端面に密接する環状
の第1シール部と、給油口筒内周面に密接する環状の第
2シール部と、これら第1、第2シール部間で給油口筒
内周面との間に環状の膨脹室を画成するくびれ部とを設
け、またキャップ及び給油口筒の相対向面の少なくとも
一方に、第1シール部を囲繞する環状溝と、この環状溝
を大気に連通する第1縦溝と、この第1縦溝の反対側で
環状溝を膨脹室に連通する横溝と、膨脹室をリザーバ内
に連通する第2縦溝とを設けたことを第1の特徴とす
る。In order to achieve the above-mentioned object, the present invention provides a cap made of an elastic material which is mounted on a fuel filler cylinder of a reservoir, and a first annular seal which is in close contact with the upper face of the fuel filler cylinder. Portion, an annular second seal portion that is in close contact with the inner peripheral surface of the fuel filler tube, and a constricted portion defining an annular expansion chamber between the first and second seal portions and the inner peripheral surface of the fuel filler tube. And an annular groove surrounding the first seal portion, a first longitudinal groove communicating the annular groove with the atmosphere, and at least one of the opposing surfaces of the cap and the fuel filler cylinder. The first feature is that a lateral groove communicating the annular groove with the expansion chamber on the opposite side and a second vertical groove communicating the expansion chamber into the reservoir are provided.
【0006】また本考案は、上記特徴に加えて、環状溝
を横溝よりも低く形成したことを第2の特徴とする。The present invention has a second feature that, in addition to the above features, the annular groove is formed lower than the lateral groove.
【0007】[0007]
【実施例】以下、図面により本考案の実施例について説
明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG.
【0008】先ず図1及び図2に示す本考案の第1実施
例より始める。図1において、自動車のブレーキ用マス
タシリンダMの上側に、その内部に補給すべき作動油を
貯留するリザーバRが付設される。このリザーバRは、
上壁から給油口筒3を突出させた合成樹脂製の上部リザ
ーバ半体1と、マスタシリンダMに嵌合連結する連結筒
4を底壁から突出させた合成樹脂製の下部リザーバ半体
2との相対向端面を溶着して構成される。First, a first embodiment of the present invention shown in FIGS. 1 and 2 is started. In FIG. 1, a reservoir R for storing hydraulic oil to be replenished therein is provided above a brake master cylinder M of an automobile. This reservoir R is
An upper reservoir half 1 made of synthetic resin having a fuel supply port tube 3 projecting from the upper wall, and a lower reservoir half 2 made of synthetic resin having a connecting tube 4 fitted and connected to the master cylinder M projected from the bottom wall. Are welded to each other.
【0009】前記給油口筒3の上端部外周にはフランジ
5が形成されており、このフランジ5を抱込むようにし
てキャップCが給油口筒3に装着される。このキャップ
Cはゴム等の弾性材料で成形されたもので、給油口筒3
の上端部を覆う有底円筒状のアウタ部6と、このアウタ
部6の中心部から下方へ突出して給油口筒3に挿入され
るインナ部7とからなっている。アウタ部6は、前記フ
ランジ5が係合する環状の係止溝10と、この係止溝1
0に前記フランジ5を誘導するテーパ部11と、前記フ
ランジ5の上端面に密接する環状の第1シール部12と
が内面に形成される。またインナ部7の下端部は前記給
油口筒3の内周面に密接する第2シール部13に形成さ
れ、この第2シール部13に弾性を付与するための中空
部14がインナ部7の下面に開口する。また、インナ部
7の中間部には、給油口筒3の内周面との間に環状の膨
脹室15を画成するくびれ部16が形成される。A flange 5 is formed on the outer periphery of the upper end portion of the fuel filler tube 3, and a cap C is mounted on the fuel filler tube 3 so as to embrace the flange 5. The cap C is formed of an elastic material such as rubber,
And an inner part 7 which projects downward from the center of the outer part 6 and is inserted into the fuel filler tube 3. The outer portion 6 includes an annular locking groove 10 with which the flange 5 is engaged, and the locking groove 1.
A tapered portion 11 that guides the flange 5 to zero and an annular first seal portion 12 that is in close contact with the upper end surface of the flange 5 are formed on the inner surface. Further, the lower end of the inner portion 7 is formed in a second seal portion 13 which is in close contact with the inner peripheral surface of the fuel filler tube 3, and a hollow portion 14 for imparting elasticity to the second seal portion 13 is formed in the inner portion 7. Open to the lower surface. Further, a constricted portion 16 defining an annular expansion chamber 15 is formed between the inner portion 7 and the inner peripheral surface of the fuel filler cylinder 3.
【0010】一方、図2に示すように、給油口筒3のフ
ランジ5の一側部には、その上下両面間を連通させる一
対の第1縦溝17が設けられる。さらにフランジ5に
は、第1縦溝17に連通すると共にキャップCで覆われ
る環状溝18と、この環状溝18を第1縦溝17の反対
側で前記膨脹室15に連通する横溝19とが設けられ
る。この場合、環状溝18は横溝19よりも下方へ段差
をつけて形成される。On the other hand, as shown in FIG. 2, a pair of first vertical grooves 17 for communicating between upper and lower surfaces of the flange 5 of the fuel filler cylinder 3 are provided on one side of the flange 5. Further, the flange 5 has an annular groove 18 communicating with the first vertical groove 17 and covered by the cap C, and a lateral groove 19 communicating the annular groove 18 with the expansion chamber 15 on the opposite side of the first vertical groove 17. Provided. In this case, the annular groove 18 is formed with a step below the lateral groove 19.
【0011】また図1及び図2に示すように、給油口筒
3内面には、横溝19の反対側で第2シール部13を迂
回して前記膨脹室15をリザーバR内に連通する第2縦
溝20が設けられる。As shown in FIGS. 1 and 2, a second side of the oil supply port cylinder 3 is connected to the expansion chamber 15 in the reservoir R by bypassing the second seal portion 13 on the opposite side of the lateral groove 19. A vertical groove 20 is provided.
【0012】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.
【0013】リザーバRの内部は、第2縦溝20、膨脹
室15、横溝19、環状溝18及び第1縦溝17からな
る通気路を介して常時大気と連通するので、リザーバR
とマスタシリンダMとの間で作動油の授受が行われると
き、それに伴うリザーバR内の油面の昇降に応じてリザ
ーバR内部はスムーズに呼吸することができる。しかも
上記通気路中、第1縦溝17及び横溝19は、給油口筒
3の軸線を挟んだ正反対位置で環状溝18と連通してい
るから、洗車時、水の飛沫が第1縦溝17から環状溝1
8に勢いよく浸入しても、環状溝18を横溝19に向っ
て流動する間にその水圧は充分に減衰される。しかも環
状溝18は、横溝19よりも一段下っているので、たと
え水が環状溝18の横溝19位置まで到達しても、横溝
19への流入は生じない。そして、圧力を減衰された水
は、環状溝18を戻って第1縦溝17から外部へ流出す
る。こうして、リザーバR内部への水の浸入を防ぐこと
ができる。The interior of the reservoir R is always in communication with the atmosphere through an air passage formed by the second vertical groove 20, the expansion chamber 15, the horizontal groove 19, the annular groove 18, and the first vertical groove 17, so that the reservoir R
When hydraulic oil is transferred between the master cylinder M and the master cylinder M, the inside of the reservoir R can breathe smoothly according to the rise and fall of the oil level in the reservoir R accompanying the transfer of hydraulic oil. Moreover, in the ventilation path, the first vertical groove 17 and the horizontal groove 19 communicate with the annular groove 18 at diametrically opposite positions with respect to the axis of the fuel filler cylinder 3, so that when the car is washed, water splashes from the first vertical groove 17. To annular groove 1
Even if it penetrates vigorously, the water pressure is sufficiently attenuated while flowing through the annular groove 18 toward the lateral groove 19. Moreover, since the annular groove 18 is one step lower than the lateral groove 19, even if water reaches the position of the lateral groove 19 of the annular groove 18, no water flows into the lateral groove 19. Then, the water whose pressure has been attenuated returns to the annular groove 18 and flows out of the first vertical groove 17 to the outside. Thus, it is possible to prevent water from entering the reservoir R.
【0014】一方、リザーバRに加えられる振動によ
り、その内部の油面が激しく波立って、その飛沫が第2
縦溝20を勢いよく上昇して膨脹室15に侵入しても、
該室15でその油の圧力が減衰される。しかも該室15
の上部に連なる横溝19は第2縦溝20と給油口筒3の
軸線を挟んで正反対の位置を占めているので、第2縦溝
20を上昇した油が直ちに横溝19に到達することはな
い。そして膨脹室15で圧力を減衰された油は第2縦溝
20を流下してリザーバR内に戻る。こうしてキャップ
C外への油の漏出を防ぐことができる。On the other hand, due to the vibration applied to the reservoir R, the oil level inside the reservoir R vibrates violently, and
Even if the vertical groove 20 rises vigorously and enters the expansion chamber 15,
In the chamber 15, the pressure of the oil is damped. Moreover, the room 15
Since the horizontal groove 19 connected to the upper part of the second vertical groove occupies a position directly opposite to the second vertical groove 20 with respect to the axis of the oil supply port cylinder 3, the oil which has risen through the second vertical groove 20 does not reach the horizontal groove 19 immediately. . Then, the oil whose pressure has been attenuated in the expansion chamber 15 flows down the second vertical groove 20 and returns into the reservoir R. Thus, leakage of oil to the outside of the cap C can be prevented.
【0015】ところで、第1、第2シール部12,1
3、くびれ部16、第1、第2縦溝17,20、環状溝
18及び横溝19は、リザーバRまたはキャップCの成
形と同時に形成されるものであるから、その形成は極め
て容易である。The first and second seal portions 12, 1
3. Since the constricted portion 16, the first and second vertical grooves 17, 20, the annular groove 18, and the horizontal groove 19 are formed at the same time as the formation of the reservoir R or the cap C, their formation is extremely easy.
【0016】図3は本考案の第2実施例を示すもので、
第1、第2縦溝17,20及び横溝19をキャップC側
に設けた点を除けば前実施例と同様の構成であり、図
中、前実施例と対応する部分には、それと同一の符号を
付す。この実施例においても、前実施例と同様の作用を
生じさせることができる。FIG. 3 shows a second embodiment of the present invention.
The configuration is the same as that of the previous embodiment except that the first and second vertical grooves 17 and 20 and the horizontal groove 19 are provided on the cap C side. Assign a sign. In this embodiment, the same operation as in the previous embodiment can be produced.
【0017】[0017]
【考案の効果】以上のように本考案の第1の特徴によれ
ば、リザーバの給油口筒に装着される弾性材料からなる
キャップに、給油口筒上端面に密接する環状の第1シー
ル部と、給油口筒内周面に密接する環状の第2シール部
と、これら第1、第2シール部間で給油口筒内周面との
間に環状の膨脹室を画成するくびれ部とを設け、またキ
ャップ及び給油口筒の相対向面の少なくとも一方に、第
1シール部を囲繞する環状溝と、この環状溝を大気に連
通する第1縦溝と、この第1縦溝の反対側で環状溝を膨
脹室に連通する横溝と、膨脹室をリザーバ内に連通する
第2縦溝とを設けたので、外部から第1縦溝に侵入する
水の飛沫を環状溝により減衰して膨脹室への侵入を防ぐ
ことができ、またリザーバ内の第2縦溝を上昇する油の
飛沫を膨脹室で減衰して環状溝への漏出を防ぐことがで
きる。しかも、前記第1、第2シール部、くびれ部、第
1、第2縦溝、環状溝及び横溝はリザーバまたはキャッ
プの成形と同時に形成し得るので、構造が簡単な上、製
作容易で安価に提供することができる。As described above, according to the first feature of the present invention, a cap made of an elastic material which is mounted on a fuel filler cylinder of a reservoir is provided with an annular first seal portion which is in close contact with an upper end face of the fuel filler cylinder. An annular second seal portion which is in close contact with the inner peripheral surface of the fuel filler cylinder; and a constricted portion defining an annular expansion chamber between the first and second seal portions and the inner peripheral surface of the fuel filler cylinder. And an annular groove surrounding the first seal portion, a first longitudinal groove communicating the annular groove with the atmosphere, and an opposite of the first longitudinal groove on at least one of the opposing surfaces of the cap and the fuel filler cylinder. The lateral groove connecting the annular groove to the expansion chamber on the side and the second vertical groove communicating the expansion chamber into the reservoir are provided, so that water splashing from the outside into the first vertical groove is attenuated by the annular groove. It can prevent intrusion into the expansion chamber and reduce oil splashes rising in the second flute in the reservoir. It is possible to prevent leakage into the annular groove and. Moreover, since the first and second seal portions, the constricted portion, the first and second vertical grooves, the annular groove and the horizontal groove can be formed simultaneously with the formation of the reservoir or the cap, the structure is simple, and the production is easy and inexpensive. Can be provided.
【0018】また本考案の第2の特徴によれば、環状溝
を横溝よりも低く形成したので、外部から環状溝に侵入
した水が横溝位置まで流れてきても、環状溝及び横溝間
の段差により、横溝への侵入を確実に防ぐことができ
る。According to a second feature of the present invention, since the annular groove is formed lower than the lateral groove, even if water which has entered the annular groove from the outside flows to the lateral groove position, a step between the annular groove and the lateral groove is formed. Thereby, intrusion into the lateral groove can be reliably prevented.
【図1】本考案の第1実施例を示すブリーザ装置付リザ
ーバの要部縦断側面図。FIG. 1 is a longitudinal sectional side view of a main part of a reservoir with a breather device, showing a first embodiment of the present invention.
【図2】図1の2−2線断面図。FIG. 2 is a sectional view taken along line 2-2 of FIG. 1;
【図3】本考案の第2実施例を示す、リザーバの給油口
筒周りの縦断面図。FIG. 3 is a vertical cross-sectional view of a reservoir around a fuel filler cylinder, showing a second embodiment of the present invention.
3 給油口筒 5 フランジ 12 第1シール部 13 第2シール部 15 膨脹室 16 くびれ部 17 第1縦溝 18 環状溝 19 横溝 20 第2縦溝 C キャップ R リザーバ Reference Signs List 3 refueling port cylinder 5 flange 12 first seal portion 13 second seal portion 15 expansion chamber 16 constricted portion 17 first vertical groove 18 annular groove 19 horizontal groove 20 second vertical groove C cap R reservoir
Claims (2)
される弾性材料からなるキャップ(C)に、給油口筒
(3)上端面に密接する環状の第1シール部(12)
と、給油口筒(3)内周面に密接する環状の第2シール
部(13)と、これら第1、第2シール部(12,1
3)間で給油口筒(3)内周面との間に環状の膨脹室
(15)を画成するくびれ部(16)とを設け、またキ
ャップ(C)及び給油口筒(3)の相対向面の少なくと
も一方に、第1シール部(12)を囲繞する環状溝(1
8)と、この環状溝(18)を大気に連通する第1縦溝
(17)と、この第1縦溝(17)の反対側で環状溝
(18)を膨脹室(15)に連通する横溝(19)と、
膨脹室(15)をリザーバ(R)内に連通する第2縦溝
(20)とを設けたことを特徴とする、リザーバのブリ
ーザ装置。An annular first seal portion (12), which is in close contact with an upper end surface of a fuel filler cylinder (3), is provided on a cap (C) made of an elastic material which is mounted on a fuel filler barrel (3) of a reservoir (R).
An annular second seal portion (13) that is in close contact with the inner peripheral surface of the fuel filler cylinder (3); and the first and second seal portions (12, 1).
A constriction (16) defining an annular expansion chamber (15) is provided between the inner peripheral surface of the fuel filler cylinder (3) and the inner peripheral surface of the cap (C). At least one of the opposing surfaces has an annular groove (1) surrounding the first seal portion (12).
8), a first longitudinal groove (17) communicating the annular groove (18) with the atmosphere, and an annular groove (18) communicating with the expansion chamber (15) on the opposite side of the first longitudinal groove (17). Lateral groove (19),
A breather device for a reservoir, comprising a second vertical groove (20) communicating the expansion chamber (15) into the reservoir (R).
(18)を横溝(19)よりも低く形成したことを特徴
とする、リザーバのブリーザ装置。2. A breather device for a reservoir according to claim 1, wherein the annular groove (18) is formed lower than the lateral groove (19).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32693U JP2540382Y2 (en) | 1993-01-11 | 1993-01-11 | Reservoir breather device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32693U JP2540382Y2 (en) | 1993-01-11 | 1993-01-11 | Reservoir breather device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0655911U JPH0655911U (en) | 1994-08-02 |
JP2540382Y2 true JP2540382Y2 (en) | 1997-07-02 |
Family
ID=11470790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32693U Expired - Lifetime JP2540382Y2 (en) | 1993-01-11 | 1993-01-11 | Reservoir breather device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2540382Y2 (en) |
-
1993
- 1993-01-11 JP JP32693U patent/JP2540382Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0655911U (en) | 1994-08-02 |
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