JP2005048597A - Pressure lead-out port structure for air connector - Google Patents

Pressure lead-out port structure for air connector Download PDF

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Publication number
JP2005048597A
JP2005048597A JP2003203037A JP2003203037A JP2005048597A JP 2005048597 A JP2005048597 A JP 2005048597A JP 2003203037 A JP2003203037 A JP 2003203037A JP 2003203037 A JP2003203037 A JP 2003203037A JP 2005048597 A JP2005048597 A JP 2005048597A
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Japan
Prior art keywords
pressure
air connector
connector
air
hole
Prior art date
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Pending
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JP2003203037A
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Japanese (ja)
Inventor
Naohiro Hasegawa
直広 長谷川
Yukichi Osada
勇吉 長田
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Kojima Industries Corp
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Kojima Press Industry Co Ltd
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Publication date
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Priority to JP2003203037A priority Critical patent/JP2005048597A/en
Publication of JP2005048597A publication Critical patent/JP2005048597A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To realize a pressure lead-out port structure for an air connector preventing oil mist floating in the air connector and water drop condensing on an inner surface of the air connector from flowing into the pressure lead-out port and preventing influence of pressure fluctuation of intake air by providing an auxiliary chamber space. <P>SOLUTION: This invention relates to the pressure lead-out port 11 provided on the air connector 10. A hole 12 is formed on a predetermined position of the air connector 10 and a disk shaped pressure lead-out member 13 separate from the air connector 10 is attached on an outer wall of the air connector 10 to cover the hole 12. A space 15 is provided therebetween. A pressure lead-out pipe 14 is formed on the pressure lead-out member 13 and is provided in a manner of being shifted upward in relation to a center of the pressure lead-out member 13. The hole 12 formed on the air connector 10 is provided in a manner of being shifted downward in relation of the center of the pressure lead-out member 13. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、エアコネクタの圧力取出し用ポート構造に関する。詳しくは、内燃機関の吸気のために設けられたエアコネクタやエアクリーナホースにおいて、その吸気経路の途中に燃料系部品（プレッシャレギュレータ）の制御用に設けられた圧力取出し用ポート構造に関する。
【０００２】
【従来の技術】
従来、内燃機関においては、燃焼室よりピストンとピストンリングの隙間を通ってクランクケースに洩れるブローバイガスを還元するブローバイガス還元装置（ＰＣＶ）（ポジティブ クランクケース ベンチレーション）が知られている。ブローバイガスの組成は、未燃焼のＨＣを多量に含んでいるため可燃ガスであり、ブローバイガスをそのまま大気に放出することなく再び吸気系通路に戻して燃焼させるようにしている。
【０００３】
ＰＣＶは、クランクケースに大気から直接新気を導き、ブローバイガスと新気との混合ガスを還流通路を介してエアクリーナ下流の吸気通路に導いて再燃焼させるものや、吸入空気の吸引力を利用してブローバイガスを吸出し、これを吸気通路に導くもの等がある。図５はブローバイガスを導入するＰＣＶユニオンを有するエアコネクタを示す図である。同図（ａ）は平面図、（ｂ）は（ａ）図のＺ矢視図、（ｃ）は（ｂ）のｃ−ｃ線における断面図である。
【０００４】
前記エアコネクタ１はエアクリーナ側とスロットル側とをつなぐパイプであり、ＰＣＶユニオン２と圧力取出し用ポート３が設けられている。そして、圧力取出し用ポート３は（ｃ）図に示すように、エアコネクタ１の側面にやや大きい孔４が設けられ、その外側にエアコネクタとは別部材の皿状の圧力取出し用部材５が取付けられ、該圧力取出し用部材５には圧力取出し用パイプ６が形成されている。そして圧力取出し用パイプ６からはゴムホース７により燃焼系部品（プレッシャレギュレータ）に接続している。
【０００５】
【特許文献１】
特開平８−１００６６１号公報
【特許文献２】
登録実用新案公報２５６０２９９号
【０００６】
上記従来のエアコネクタにおいては、ＰＣＶユニオン２から流入してくるブローバイガス中のオイルミストや、エアコネクタ１の内面で結露によりできた水滴や、その他の異物が吸気系の圧力、振動等により圧力取出し用ポート内部に流入するおそれがある。又、エアコネクタ内の流通空気量がエンジン回転数により変動したり、脈動が発生することにより圧力が変動する。そしてオイルミストはプレッシャレギュレータのダイアフラム等を損傷し、水分は寒冷地ではゴムホース内で凍結してプレッシャレギュレータの機能を無効にするという問題を生ずる。
【０００７】
本発明は、上記従来の問題点に鑑み、圧力取出し用ポート内部にブローバイガス中のオイルミストや、エアコネクタの内面で結露によりできた水滴や、その他の異物が流入しないように、又、副室空間を設け圧力変動を少なくしたエアコネクタの圧力用取出し用ポート構造を実現することを目的とする。
【０００８】
【課題を解決するための手段】
上記目的を達成するため、本発明の請求項１のエアコネクタの圧力取出し用ポート構造は、エアコネクタ１０に設けられる圧力取出し用ポート１１であって、前記圧力取出し用ポート１１は、エアコネクタ１０の所定位置に孔１２が穿孔形成され、該孔１２を覆うようにエアコネクタ１０の外壁に皿状で且前記エアコネクタ１０とは別部材の圧力取出し用部材１３が取付けられ、その間に空間１５が設けられ、前記圧力取出し用部材１３には圧力取出し用パイプ１４が形成され、前記圧力取出し用パイプ１４は圧力取出し用部材１３の中心に対して上方に偏心して設けられ、エアコネクタ１０に穿孔形成された孔１２は圧力取出し用部材１３の中心に対して下方に偏心して設けられていることを特徴とする。
【０００９】
また、請求項２は、前記孔１２と圧力取出し用パイプ１４との間に円弧状または直線状のリブ１６を設けてなることを特徴とする。また、請求項３は、前記圧力取出し用パイプ１４の一端をエアコネクタ１０の壁に向かって突出させたことを特徴とする。
【００１０】
この構成を採ることにより、エアコネクタの圧力取出し用ポート内部にブローバイガス中のオイルミストや、エアコネクタの内面で結露によりできた水滴や、その他の異物が流入しないように、又、吸気に圧力変動を少なくしたエアコネクタの圧力取出し用ポート構造を実現することができる。
【００１１】
【発明の実施の形態】
図１は本発明のエアコネクタの圧力取出し用ポート構造の第１の実施の形態を説明するための図であり、（ａ）は正面図、（ｂ）は（ａ）図のｂ−ｂ線における断面図である。同図において、符号１０はエアコネクタ、１１は圧力取出し用ポートである。そして、エアコネクタ１０はブロー成形あるいはインジェクション成形された樹脂製で、エアクリーナ側Ａとスロットルバルブ側Ｂとを接続するパイプ状をなし、その途中に圧力取出し用ポート１１が設けられている。
【００１２】
前記圧力取出し用ポート１１は、図１（ａ）（ｂ）に示すように、エアコネクタ１０の所定位置に孔１２が穿孔形成され、該孔１２を覆うようにエアコネクタ１０の外壁に深さＨの皿状で且前記エアコネクタ１０とは別部材の圧力取出し用部材１３が接着または溶着により取付けられて空間１５が形成されている。そして前記圧力取出し用部材１３には圧力取出し用パイプ１４が形成されている。
【００１３】
なお、前記圧力取出し用パイプ１４は圧力取出し用部材１３の中心に対して上方にＬ１だけ偏心して設けられている。また、エアコネクタ１０に穿孔形成された孔１２も皿状の圧力取出し用部材１３の中心に対して下方にＬ２だけ偏心して設けられている。従って、エアコネクタ１０に穿孔形成された孔１２と圧力取出し用パイプ１４とは両者の偏心分Ｌ１＋Ｌ２だけ上下に離れている。
【００１４】
このように構成された本実施の形態の作用を図２により説明する。同図に示すように、エアコネクタ１０内に浮遊するオイルミストは、孔１２から圧力取出し用部材１３の円板部１３ａとリング状の壁１３ｂとエアコネクタの外壁とで形成される空間１５に進入するが、該空間１５では空気の流動が小さいため、気液分離の作用が行われ、液体となったオイル分は下方に落下し、孔１２からエアコネクタに戻される。また、エアコネクタ１０内の水滴は孔１２に進入せずに落下するが、孔１２から空間１５に入っても、孔１２が空間１５の下部にあるため水分は孔１２からエアコネクタ１０内に流れ出す。従って孔１２より上方にあるパイプ１４にはオイル分も水分も進入しない。又、副室空間１５を設けている事により、吸気のための圧力変動を直接受けることなく安定した圧力を取り出す事ができる。
【００１５】
図３は本発明のエアコネクタの圧力取出し用ポート構造の第２の実施の形態を示す図で、（ａ）は正面図、（ｂ）は（ａ）図のｂ−ｂ線における断面図である。本実施の形態は第１の本実施の形態とほぼ同様であり、異なるところは圧力取出し用部材１３の円板部１３ａに円弧状のリブ１６を設けたことである。該リブ１６はエアコネクタの壁との間に隙間Ｇ１ができるように空間１５内に突出して設けられている。なお、該リブ１６は図においては円弧状であるが、直線状であってもよい。
【００１６】
また、図４は本発明のエアコネクタの圧力取出し用ポート構造の第３の実施の形態を示す図で、（ａ）は正面図、（ｂ）は（ａ）図のｂ−ｂ線における断面図である。本実施の形態は第１の本実施の形態とほぼ同様であり、異なるところは圧力取出し用パイプ１４の一端を空間１５内に隙間Ｇ２ができるように突出させたことである。このように構成された第２及び第３の実施の形態は、突出部がバリアとなり第１の実施の形態よりも更に気液分離作用が良好となる。
【００１７】
【発明の効果】
本発明のエアコネクタの圧力取出し用ポートに依れば、エアコネクタに設けた孔と圧力取出し用ポートのパイプとを上下に所定距離離して形成したこと、またはエアコネクタに設けた孔と圧力取出し用ポートの間にバリアとなるリブを設けたこと、または圧力取出し用ポートのパイプを突出させたことにより、ブローバイガス中のオイルミストや、エアコネクタの内面で結露によりできた水滴や、その他の異物が、ポート内部に流入するのを防止することができる。又、吸気の圧力変動を直接受ける事なく、安定した圧力を取り出すことができる。
【図面の簡単な説明】
【図１】本発明のエアコネクタの圧力取出し用ポートの第１の実施の形態を説明するための図であり、（ａ）は正面図、（ｂ）は（ａ）図のｂ−ｂ線における断面図である。
【図２】本発明のエアコネクタの圧力取出し用ポートの第１の実施の形態の作用を説明するための図である。
【図３】本発明のエアコネクタの圧力取出し用ポートの第２の実施の形態を示す図である。
【図４】本発明のエアコネクタの圧力取出し用ポートの第３の実施の形態を示す図である。
【図５】従来のブローバイガスを導入するＰＣＶユニオンを有するエアコネクタを示す図であり、（ａ）は平面図、（ｂ）は（ａ）図のＺ矢視図、（ｃ）は（ｂ）のｃ−ｃ線における断面図である。
【符号の説明】
１０…エアコネクタ
１１…圧力取出し用ポート
１２…孔
１３…圧力取出し用部材
１３ａ…円板部
１３ｂ…壁部
１４…圧力取出し用パイプ
１５…空間
１６…リブ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pressure outlet port structure for an air connector. More specifically, the present invention relates to an air connector or an air cleaner hose provided for intake of an internal combustion engine, and a pressure extraction port structure provided for controlling a fuel system component (pressure regulator) in the middle of the intake path.
[0002]
[Prior art]
Conventionally, in an internal combustion engine, a blow-by gas reduction device (PCV) (positive crankcase ventilation) is known that reduces blow-by gas leaking from a combustion chamber through a gap between a piston and a piston ring into a crankcase. The composition of the blow-by gas is a combustible gas because it contains a large amount of unburned HC, and the blow-by gas is returned to the intake system passage and burned without being released into the atmosphere as it is.
[0003]
PCV introduces fresh air directly into the crankcase from the atmosphere, uses a mixture of blow-by gas and fresh air through the recirculation passage to the intake passage downstream of the air cleaner for recombustion, and uses intake air suction force Then, the blow-by gas is sucked out and guided to the intake passage. FIG. 5 is a view showing an air connector having a PCV union for introducing blow-by gas. FIG. 4A is a plan view, FIG. 4B is a cross-sectional view taken along the line cc of FIG. 4B, and FIG.
[0004]
The air connector 1 is a pipe connecting the air cleaner side and the throttle side, and is provided with a PCV union 2 and a pressure extraction port 3. As shown in FIG. 3C, the pressure extraction port 3 is provided with a slightly larger hole 4 on the side surface of the air connector 1, and a dish-shaped pressure extraction member 5 which is a separate member from the air connector on the outside thereof. A pressure extracting pipe 6 is formed on the pressure extracting member 5. The pressure extraction pipe 6 is connected to a combustion system component (pressure regulator) by a rubber hose 7.
[0005]
[Patent Document 1]
JP-A-8-1000066 [Patent Document 2]
Registered Utility Model Publication No. 2560299 [0006]
In the above conventional air connector, oil mist in blow-by gas flowing in from the PCV union 2, water droplets formed by condensation on the inner surface of the air connector 1, and other foreign substances are pressured by the pressure and vibration of the intake system. There is a risk of flow into the port for removal. In addition, the amount of air flowing through the air connector varies depending on the engine speed, and the pressure varies as pulsation occurs. The oil mist damages the pressure regulator diaphragm and the like, and the water content freezes in a rubber hose in a cold region, causing a problem of invalidating the function of the pressure regulator.
[0007]
In view of the above-mentioned conventional problems, the present invention prevents oil mist in blow-by gas, water droplets formed by condensation on the inner surface of the air connector, and other foreign matters from flowing into the pressure extraction port. An object of the present invention is to realize a pressure extraction port structure for an air connector that has a chamber space and reduces pressure fluctuation.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the pressure connector port structure of the air connector according to claim 1 of the present invention is a pressure connector port 11 provided in the air connector 10, and the pressure connector port 11 is the air connector 10. A hole 12 is formed at a predetermined position, and a pressure take-out member 13 is attached to the outer wall of the air connector 10 so as to cover the hole 12 and is a dish-like member separate from the air connector 10. The pressure take-out pipe 14 is formed on the pressure take-out member 13, the pressure take-out pipe 14 is provided eccentrically upward with respect to the center of the pressure take-out member 13, and the air connector 10 is perforated. The formed hole 12 is characterized by being provided eccentrically downward with respect to the center of the pressure extracting member 13.
[0009]
According to a second aspect of the present invention, an arc-shaped or linear rib 16 is provided between the hole 12 and the pressure extracting pipe 14. A third aspect of the present invention is characterized in that one end of the pressure extracting pipe 14 is protruded toward the wall of the air connector 10.
[0010]
By adopting this configuration, oil mist in blow-by gas, water droplets formed by condensation on the inner surface of the air connector, and other foreign matters do not flow into the pressure extraction port of the air connector, and pressure is applied to the intake air. It is possible to realize a pressure connector port structure for an air connector with less fluctuation.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a view for explaining a first embodiment of a pressure outlet port structure of an air connector of the present invention, wherein (a) is a front view and (b) is a line bb in FIG. 1 (a). FIG. In the figure, reference numeral 10 is an air connector, and 11 is a pressure extracting port. The air connector 10 is made of a resin that is blow-molded or injection-molded, has a pipe shape that connects the air cleaner side A and the throttle valve side B, and is provided with a pressure extraction port 11 in the middle thereof.
[0012]
As shown in FIGS. 1 (a) and 1 (b), the pressure extraction port 11 has a hole 12 formed at a predetermined position of the air connector 10, and has a depth in the outer wall of the air connector 10 so as to cover the hole 12. A space 15 is formed by attaching a pressure-extracting member 13 which is H-shaped and separate from the air connector 10 by adhesion or welding. A pressure extraction pipe 14 is formed on the pressure extraction member 13.
[0013]
The pressure extracting pipe 14 is provided eccentrically by L 1 above the center of the pressure extracting member 13. Further, the hole 12 formed in the air connector 10 in a perforated manner is also provided eccentrically downward by L 2 with respect to the center of the dish-shaped pressure extracting member 13. Therefore, the hole 12 formed in the air connector 10 and the pressure extracting pipe 14 are separated from each other by an eccentric amount L 1 + L 2 .
[0014]
The operation of this embodiment configured as described above will be described with reference to FIG. As shown in the figure, the oil mist floating in the air connector 10 enters the space 15 formed by the disk portion 13a of the pressure extraction member 13 from the hole 12, the ring-shaped wall 13b, and the outer wall of the air connector. However, since the air flow is small in the space 15, gas-liquid separation is performed, and the oil component that has become liquid falls downward and returns to the air connector from the hole 12. In addition, the water droplets in the air connector 10 fall without entering the hole 12, but even if the water enters the space 15 from the hole 12, the water is transferred from the hole 12 into the air connector 10 because the hole 12 is located below the space 15. Flows out. Therefore, neither oil nor moisture enters the pipe 14 above the hole 12. Further, by providing the sub chamber space 15, it is possible to take out a stable pressure without directly receiving a pressure fluctuation for intake.
[0015]
FIGS. 3A and 3B are views showing a second embodiment of the pressure outlet port structure of the air connector of the present invention, wherein FIG. 3A is a front view, and FIG. 3B is a cross-sectional view taken along line bb in FIG. is there. This embodiment is substantially the same as the first embodiment, and the difference is that an arc-shaped rib 16 is provided on the disk portion 13a of the pressure extracting member 13. The rib 16 is provided so as to protrude into the space 15 to allow a gap G 1 between the wall of the air connector. The rib 16 is arcuate in the figure, but may be linear.
[0016]
FIGS. 4A and 4B are views showing a third embodiment of the pressure outlet port structure of the air connector of the present invention. FIG. 4A is a front view, and FIG. FIG. This embodiment is substantially the same as the first embodiment, and the difference is that one end of the pressure extraction pipe 14 is projected so as to form a gap G 2 in the space 15. In the second and third embodiments configured as described above, the protruding portion serves as a barrier, and the gas-liquid separation action is further improved as compared with the first embodiment.
[0017]
【The invention's effect】
According to the pressure extraction port of the air connector of the present invention, the hole provided in the air connector and the pipe of the pressure extraction port are formed apart from each other by a predetermined distance, or the hole provided in the air connector and the pressure extraction port By providing ribs that serve as barriers between the ports, or by projecting the pipe of the pressure relief port, oil mist in blow-by gas, water droplets formed by condensation on the inner surface of the air connector, and other Foreign matter can be prevented from flowing into the port. In addition, a stable pressure can be taken out without directly receiving intake pressure fluctuations.
[Brief description of the drawings]
FIGS. 1A and 1B are diagrams for explaining a first embodiment of a pressure outlet port of an air connector of the present invention, wherein FIG. 1A is a front view, and FIG. 1B is a line bb in FIG. FIG.
FIG. 2 is a view for explaining the operation of the first embodiment of the pressure extraction port of the air connector of the present invention.
FIG. 3 is a view showing a second embodiment of a pressure extracting port of the air connector of the present invention.
FIG. 4 is a view showing a third embodiment of a pressure extracting port of the air connector of the present invention.
5A and 5B are diagrams showing a conventional air connector having a PCV union that introduces blow-by gas, where FIG. 5A is a plan view, FIG. 5B is a view as viewed in the direction of the arrow Z in FIG. It is sectional drawing in the cc line | wire of ().
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Air connector 11 ... Pressure extraction port 12 ... Hole 13 ... Pressure extraction member 13a ... Disk part 13b ... Wall part 14 ... Pressure extraction pipe 15 ... Space 16 ... Rib

Claims (3)

エアコネクタ（１０）に設けられる圧力取出し用ポート（１１）であって、
前記圧力取出し用ポート（１１）は、エアコネクタ（１０）の所定位置に孔（１２）が穿孔形成され、該孔（１２）を覆うようにエアコネクタ（１０）の外壁に皿状で且前記エアコネクタ（１０）とは別部材の圧力取出し用部材（１３）が取付けられ、空間（１５）を形成し、
前記圧力取出し用部材（１３）には圧力取出し用パイプ（１４）が形成され、前記圧力取出し用パイプ（１４）は圧力取出し用部材（１３）の中心に対して上方に偏心して設けられ、エアコネクタ（１０）に穿孔形成された孔（１２）は圧力取出し用部材（１３）の中心に対して下方に偏心して設けられていることを特徴とするエアコネクタの圧力取出し用ポート構造。A pressure extraction port (11) provided in the air connector (10),
The pressure extraction port (11) has a hole (12) formed at a predetermined position of the air connector (10), and is formed in a dish shape on the outer wall of the air connector (10) so as to cover the hole (12). A pressure extraction member (13) separate from the air connector (10) is attached to form a space (15),
A pressure extraction pipe (14) is formed on the pressure extraction member (13), and the pressure extraction pipe (14) is provided eccentrically upward with respect to the center of the pressure extraction member (13). A pressure outlet port structure for an air connector, wherein the hole (12) formed in the connector (10) is eccentrically provided downward with respect to the center of the pressure outlet member (13). 前記孔（１２）と圧力取出し用パイプ（１４）との間に円弧状または直線状のリブ（１６）を設けてなることを特徴とする請求項１記載のエアコネクタの圧力取出し用ポート構造。The pressure connector port structure for an air connector according to claim 1, wherein an arc-shaped or linear rib (16) is provided between the hole (12) and the pressure extracting pipe (14). 前記圧力取出し用パイプ（１４）の一端をエアコネクタ（１０）の壁に向かって突出させたことを特徴とする請求項１記載のエアコネクタの圧力取出し用ポート構造。The pressure connector port structure for an air connector according to claim 1, wherein one end of the pressure connector pipe (14) protrudes toward the wall of the air connector (10).
JP2003203037A 2003-07-29 2003-07-29 Pressure lead-out port structure for air connector Pending JP2005048597A (en)

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JP2008309112A (en) * 2007-06-15 2008-12-25 Toyota Motor Corp Piping waterproof connection structure
JP2018165487A (en) * 2017-03-28 2018-10-25 トヨタ自動車株式会社 Intake duct
CN109109620A (en) * 2018-07-25 2019-01-01 济南吉美乐电源技术有限公司 A kind of vehicle mounted square cabin diesel generating set sound-deadening and noise-reducing smoke guide device

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JP2008309112A (en) * 2007-06-15 2008-12-25 Toyota Motor Corp Piping waterproof connection structure
US8359910B2 (en) 2007-06-15 2013-01-29 Toyota Jidosha Kabushiki Kaisha Waterproof connecting structure for pipe
JP2018165487A (en) * 2017-03-28 2018-10-25 トヨタ自動車株式会社 Intake duct
CN109109620A (en) * 2018-07-25 2019-01-01 济南吉美乐电源技术有限公司 A kind of vehicle mounted square cabin diesel generating set sound-deadening and noise-reducing smoke guide device

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