JP2003222244A - Seal packing and sealing structure for parts of intake system - Google Patents
Seal packing and sealing structure for parts of intake systemInfo
- Publication number
- JP2003222244A JP2003222244A JP2002019593A JP2002019593A JP2003222244A JP 2003222244 A JP2003222244 A JP 2003222244A JP 2002019593 A JP2002019593 A JP 2002019593A JP 2002019593 A JP2002019593 A JP 2002019593A JP 2003222244 A JP2003222244 A JP 2003222244A
- Authority
- JP
- Japan
- Prior art keywords
- wall portion
- seal
- packing
- mounting groove
- seal packing
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、エアクリーナ等
の内燃機関の吸気系部品に好適な低反力のシールパッキ
ンおよびこれを用いたシール構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-reaction force seal packing suitable for an intake system component of an internal combustion engine such as an air cleaner, and a seal structure using the same.
【０００２】[0002]
【従来の技術】エアクリーナのシールパッキンとして、
例えば実開平６−７６６４７号公報に記載されているよ
うに、ゴムなどの弾性材料によって断面矩形状に形成す
るとともに、その一部から舌片状にシールリップを延設
したものが知られている。このものでは、上記シールリ
ップがエアクリーナカバーに当接してシールするととも
に、断面矩形状の部分がストッパ部として機能し、過度
の圧縮変形を防止している。As a seal packing for an air cleaner,
For example, as described in Japanese Utility Model Laid-Open No. 6-76647, there is known one in which an elastic material such as rubber is formed into a rectangular cross section and a seal lip is extended from a part thereof to a tongue shape. . In this structure, the seal lip abuts against the air cleaner cover to seal the air cleaner cover, and the portion having a rectangular cross section functions as a stopper portion to prevent excessive compressive deformation.
【０００３】また、特開２０００−３５６２６７号公報
には、三つ又状の断面形状を有する低反力のシールパッ
キンが開示されている。これは、蟻溝内に装着されるも
ので、蟻溝底面との間に空間部を構成することで、変形
時の反力を低減させている。Further, Japanese Patent Laid-Open No. 2000-356267 discloses a low-reaction-force seal packing having a three-pronged cross-sectional shape. This is mounted in the dovetail groove, and the reaction force at the time of deformation is reduced by forming a space between the dovetail groove and the bottom surface of the dovetail groove.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の構成におい
ては、いずれも相手側の部材が平坦な当接面となり、こ
の当接面にシールパッキンが当接するので、全体として
作用する反力は大きなものとなる。特に、種々の誤差に
よりシールパッキンの変形量が大きくなると、大きな反
力が作用する。従って、相手側の部材、例えばエアクリ
ーナカバーを合成樹脂製としたような場合に、その肉厚
の増加、リブの追加、等によって、十分な剛性を有する
ように該カバーを形成する必要が生じ、その重量の増加
といった不具合が生じる。In any of the above-mentioned conventional structures, the mating member has a flat contact surface, and the seal packing abuts on this contact surface, so that the reaction force acting as a whole is large. Will be things. In particular, when the amount of deformation of the seal packing increases due to various errors, a large reaction force acts. Therefore, when the mating member, for example, the air cleaner cover is made of synthetic resin, it is necessary to form the cover so as to have sufficient rigidity by increasing its thickness, adding ribs, etc. A problem such as an increase in the weight occurs.
【０００５】また、内燃機関の吸気系部品のようにエン
ジンルーム内で熱を受けてある程度高温となる場合に
は、経時的にゴムの弾性が低下する所謂”へたり”が早
期に進行する、という問題がある。これにより、特に、
シールパッキンの反力（初期の反力）を低く設定した場
合に、シール不良が生じやすくなる。When the temperature of the intake system of an internal combustion engine rises to some extent due to heat received in the engine room, so-called "fatigue", in which the elasticity of rubber decreases over time, progresses early. There is a problem. This allows, in particular,
If the reaction force of the seal packing (initial reaction force) is set low, a defective seal is likely to occur.
【０００６】なお、種々の用途に用いられる一般的なシ
ール部材として、中空の紐状に構成したゴム製シール部
材が知られているが、このような中空断面形状のものは
押出成形等によって１本の紐状に成形せざるを得ないの
で、例えばエアクリーナの開口部全周に配置するように
環状にするためには、両端を接続する必要があり、この
接続部でのシール不良やその工程の増加といった問題が
ある。[0006] As a general sealing member used for various purposes, a rubber-made sealing member having a hollow cord shape is known. Since there is no choice but to form it in the form of a string, it is necessary to connect both ends in order to make it annular so that it will be placed around the opening of the air cleaner, for example. There is a problem such as the increase of.
【０００７】[0007]
【課題を解決するための手段】この発明は、請求項１の
ように、一方の部材のパッキン取付溝内に配置され、該
パッキン取付溝に対向して他方の部材に形成したシール
壁部が圧接することで該シール壁部との間をシールする
弾性材料からなるシールパッキンであって、上記シール
壁部を受ける中央壁部と該中央壁部の両側に連結された
一対の脚部とを有する断面略Ｕ字形をなし、かつ上記パ
ッキン取付溝内に挿入した状態で一対の脚部の先端部が
互いに圧接するように少なくとも一方の脚部の先端側に
厚肉部を有するとともに、中央壁部側の部分に相対的に
薄い薄肉部を有し、この薄肉部によって、脚部の先端部
を互いに圧接させた状態で上記中央壁部の背面側に中空
部が構成されることを特徴としている。According to a first aspect of the present invention, there is provided a seal wall portion which is disposed in the packing mounting groove of one member and which is formed in the other member so as to face the packing mounting groove. A seal packing made of an elastic material that seals between the seal wall portion and the seal wall portion by press contact, comprising a central wall portion for receiving the seal wall portion and a pair of leg portions connected to both sides of the central wall portion. It has a substantially U-shaped cross section, and has a thick wall portion on the tip side of at least one of the leg portions so that the tip portions of the pair of leg portions come into pressure contact with each other when inserted into the packing mounting groove, and the central wall It is characterized in that it has a relatively thin thin portion at the portion side, and the thin portion forms a hollow portion on the back side of the central wall portion in a state where the tip portions of the legs are pressed against each other. There is.
【０００８】このシールパッキンは、上記中央壁部が外
側に露出するような姿勢で上記パッキン取付溝内に挿入
される。このように取り付けた状態では、一対の脚部の
先端部が互いに圧接し、内部に中空部を具備した中空断
面形状となる。そして、相手側の部材と組み合わせた状
態では、上記中央壁部の中央部分を上記シール壁部が押
圧することになるが、このとき中央壁部の背面側に中空
部が存在するので、低反力でかつ高圧縮となる。なお、
一対の脚部の外側面がパッキン取付溝内側面に圧接する
ので、パッキン取付溝とシールパッキンとの間も同時に
シールされる。The seal packing is inserted into the packing mounting groove in such a posture that the central wall portion is exposed to the outside. In such a mounted state, the distal end portions of the pair of leg portions are brought into pressure contact with each other to form a hollow cross-sectional shape having a hollow portion inside. Then, in the state of being combined with the member on the other side, the seal wall portion presses the central portion of the central wall portion, but at this time, since there is a hollow portion on the back side of the central wall portion, the It is both force and high compression. In addition,
Since the outer surfaces of the pair of legs are pressed against the inner surface of the packing mounting groove, the space between the packing mounting groove and the seal packing is simultaneously sealed.
【０００９】本発明のシールパッキンは、断面が略Ｕ字
形に開いているので、請求項２のように、無端状に連続
して成形することが可能である。例えば、種々のケース
の開口部に沿った環状に予め成形することができ、端部
の処理が不要である。また、このように無端状に連続し
た構成では、シールパッキン内部の中空部内に空気が封
じ込められた状態となり、この封入された空気によっ
て、復元力が得られるので、所謂”へたり”が抑制され
る。Since the seal packing of the present invention has a substantially U-shaped cross section, it can be continuously molded in an endless manner. For example, it can be preformed into an annulus along the openings of various cases without the need for edge treatment. In addition, in such an endless continuous structure, air is contained in the hollow portion inside the seal packing, and a restoring force is obtained by the enclosed air, so that so-called "sag" is suppressed. It
【００１０】また請求項３の発明では、上記脚部の外側
面に、上記パッキン取付溝の内側面に圧接するビード部
がそれぞれ突設されており、かつこの一対のビード部
と、一対の脚部の先端部が互いに当接する当接部とが、
一直線上に並ぶように配置されている。従って、各ビー
ド部の圧接による反力と上記当接部における反力とが直
線上に作用する。これにより、上記ビード部がパッキン
取付溝の内側面に確実に圧接し、パッキン取付溝との間
を良好にシールすると同時に、脚部の先端部同士が確実
に圧接し、中空部内を確実に密封状態に維持する。Further, in the invention of claim 3, bead portions, which are in pressure contact with the inner side surface of the packing mounting groove, are provided on the outer side surfaces of the leg portions, and the pair of bead portions and the pair of legs are provided. The abutting portion where the tips of the parts abut each other,
They are arranged in a straight line. Therefore, the reaction force due to the pressure contact of each bead portion and the reaction force at the contact portion act on a straight line. As a result, the bead portion surely presses against the inner surface of the packing mounting groove and seals well with the packing mounting groove, and at the same time the tip portions of the leg parts press firmly to seal the hollow portion. Keep in the state.
【００１１】また請求項４に係るシールパッキンは、パ
ッキン取付溝の底面中央に隔壁部が設けられているもの
に適用されるものであって、シール壁部を受ける中央壁
部と該中央壁部の両側に連結された一対の脚部とを有す
る断面略Ｕ字形をなし、かつ一対の脚部の先端部が、パ
ッキン取付溝底面中央の隔壁部を挟んで両側の凹溝内に
それぞれ圧入されるように厚肉部に構成されているとと
もに、中央壁部側の部分に相対的に薄い薄肉部を有し、
この薄肉部によって、取付状態で上記中央壁部の背面側
に中空部が構成されるようになっている。つまり、この
ものでは、一対の脚部は直接には圧接せず、中間に隔壁
部を挟んだ形に取り付けられる。上記隔壁部は、シール
パッキンをパッキン取付溝に挿入する際のガイドとして
機能し、単にシールパッキンを挿入すれば、該シールパ
ッキンの中央壁部の背面側に中空部が構成される。Further, the seal packing according to claim 4 is applied to a seal mounting groove having a partition wall provided at the center of the bottom surface thereof, and a central wall portion for receiving the seal wall portion and the central wall portion. Has a substantially U-shaped cross-section having a pair of legs connected to both sides of, and the tips of the pair of legs are press-fitted into the recessed grooves on both sides with the partition wall at the center of the bottom surface of the packing mounting groove sandwiched therebetween. It is configured to be a thick wall portion, and has a relatively thin thin wall portion on the side of the central wall,
The thin portion forms a hollow portion on the back side of the central wall portion in the mounted state. In other words, in this structure, the pair of legs are not directly in pressure contact with each other, but are attached in such a manner that the partition wall is sandwiched therebetween. The partition wall portion functions as a guide when inserting the seal packing into the packing mounting groove, and if the seal packing is simply inserted, a hollow portion is formed on the back side of the central wall portion of the seal packing.
【００１２】請求項５の発明は、本発明のシールパッキ
ンを用いた吸気系部品のシール構造に関するものであっ
て、合成樹脂製のボディとカバーとから構成される内燃
機関の吸気系部品において、上記ボディの開口縁に上記
パッキン取付溝を形成するとともに、上記カバーに上記
パッキン取付溝の溝中央に沿うように上記シール壁部を
形成し、かつ上記パッキン取付溝内に請求項１〜４のい
ずれかに記載のシールパッキンを配置し、このシールパ
ッキンの頂面の中央部分を上記シール壁部が押圧するよ
うに構成したことを特徴としている。すなわち、上記ボ
ディに上記カバーを組み付けた状態では、パッキン取付
溝内に配置されたシールパッキンの頂面の中央部、つま
り背面側に中空部を備えた中央壁部の中央部を、カバー
側のシール壁部が押圧する。これにより、カバー側に大
きな大きな反力を作用させずにシールパッキンが大きく
圧縮され、良好なシールが得られる。A fifth aspect of the present invention relates to a seal structure for an intake system component using the seal packing of the present invention, wherein the intake system component of an internal combustion engine is composed of a synthetic resin body and a cover. 5. The packing mounting groove is formed on the opening edge of the body, the seal wall portion is formed on the cover along the groove center of the packing mounting groove, and the packing mounting groove is formed in the packing mounting groove. The seal packing according to any one of the above is arranged, and the central portion of the top surface of the seal packing is configured to be pressed by the seal wall portion. That is, when the cover is assembled to the body, the central portion of the top surface of the seal packing arranged in the packing mounting groove, that is, the central portion of the central wall portion having a hollow portion on the back side, The seal wall portion presses. As a result, the seal packing is largely compressed without exerting a large reaction force on the cover side, and a good seal can be obtained.
【００１３】[0013]
【発明の実施の形態】以下、この発明の好ましい実施の
形態を図面に基づいて詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
【００１４】図１は、この発明に係るシールパッキン１
を用いて、内燃機関のエアクリーナのボディ２とカバー
３との間をシールするようにしたシール構造を示してい
る。上記ボディ２およびカバー３は、いずれも合成樹脂
にて成形されているものであって、ボディ２の開口縁に
パッキン取付溝４が凹設されている。このパッキン取付
溝４は、図示するように断面矩形状をなしているが、成
形時の型抜きのために、両側の内側面４ａ，４ｂが外開
きとなるように僅かに傾斜している。そして、カバー３
側には、このパッキン取付溝４に対応して、シール壁部
５が突設されている。このシール壁部５は、パッキン取
付溝４の溝中央に沿って形成され、かつパッキン取付溝
４の溝幅に比較して、その厚さが非常に小さく、十分な
余裕をもってパッキン取付溝４と噛み合うようになって
いる。上記パッキン取付溝４には、図２に示すようにシ
ールパッキン１が取り付けられ、図３に示すように上記
シール壁部５がこのシールパッキン１によってシールさ
れる。FIG. 1 shows a seal packing 1 according to the present invention.
Is used to show a seal structure for sealing between the body 2 and the cover 3 of the air cleaner of the internal combustion engine. Both the body 2 and the cover 3 are made of synthetic resin, and a packing mounting groove 4 is formed in the opening edge of the body 2 as a recess. The packing mounting groove 4 has a rectangular cross section as shown in the drawing, but is slightly inclined so that the inner side surfaces 4a and 4b on both sides are opened outward for the purpose of die cutting at the time of molding. And cover 3
A seal wall portion 5 is provided on the side so as to correspond to the packing mounting groove 4. The seal wall portion 5 is formed along the groove center of the packing mounting groove 4 and has a very small thickness as compared with the groove width of the packing mounting groove 4 and has a sufficient margin. It is designed to mesh with each other. The seal packing 1 is mounted in the packing mounting groove 4 as shown in FIG. 2, and the seal wall portion 5 is sealed by the seal packing 1 as shown in FIG.
【００１５】図４は、シールパッキン１のみを示す拡大
断面図である。このシールパッキン１は、ゴムあるいは
軟質合成樹脂等の弾性材料、例えばソリッドゴムつまり
非発泡のニトリルブタジエンゴム（ＮＢＲ）により成形
されている。特に、ボディ２，カバー３の開口形状に対
応して、予め無端の枠状に連続した形に型成形されてい
る。図示するように、このシールパッキン１は、上記シ
ール壁部５を受ける中央壁部１１と、この中央壁部１１
の両側にそれぞれ連結された脚部１２，１３と、を有
し、全体として、断面略Ｕ字形をなしている。なお、一
対の脚部１２，１３が互いに僅かに開いた形でもって成
形されている。上記中央壁部１１は、一定の肉厚でほぼ
直線状をなしており、その外側面がシールパッキン１の
頂面１４を構成している。FIG. 4 is an enlarged sectional view showing only the seal packing 1. The seal packing 1 is formed of an elastic material such as rubber or soft synthetic resin, for example, solid rubber, that is, non-foaming nitrile butadiene rubber (NBR). In particular, corresponding to the opening shape of the body 2 and the cover 3, it is pre-molded into an endless frame-like continuous shape. As shown in the figure, the seal packing 1 includes a central wall portion 11 for receiving the seal wall portion 5 and a central wall portion 11
And leg portions 12 and 13 respectively connected to both sides of, and has a substantially U-shaped cross section as a whole. The pair of legs 12 and 13 are formed so as to be slightly opened. The central wall portion 11 has a constant thickness and is substantially linear, and the outer surface thereof constitutes the top surface 14 of the seal packing 1.
【００１６】脚部１２，１３は、ほぼ対称形状をなし、
先端側が相対的に厚い厚肉部１２ａ，１３ａとなってい
るとともに、中央壁部１１側が相対的に薄い薄肉部１２
ｂ，１３ｂとなっている。これらの脚部１２，１３の外
側面１５，１６は、直線状の平面として構成されてお
り、従って、上記厚肉部１２ａ，１３ａは、互いに内側
へ膨らんでいる。また、厚肉部１２ａ，１３ａから薄肉
部１２ｂ，１３ｂへは、テーパ状に徐々に肉厚が変化し
ている。上記厚肉部１２ａ，１３ａは、シールパッキン
１をパッキン取付溝４内に挿入した状態で、互いに圧接
するようになっているが、その当接部の位置を安定させ
るために、一方の厚肉部１２ａの内側面１７が、その外
側面１５とほぼ平行な平面をなしているとともに、他方
の厚肉部１３ａの内側面１８が、Ｒ面つまり湾曲面とな
っている。これにより、脚部１２，１３を互いに近づけ
ていったときに、内側面１８の円弧の頂部となる点が、
最初に内側面１７に当接することになる。また各脚部１
２，１３の外側面１５，１６には、パッキン取付溝４の
内側面４ａ，４ｂに部分的に強く圧接するように、断面
楔形のビード部１９，２０が形成されている。このビー
ド部１９，２０は、脚部１２，１３の先端寄りにある
が、特に、パッキン取付溝４への取付状態において、上
述した脚部１２，１３の当接部と一直線上に並ぶよう
に、その位置が定められている。The legs 12 and 13 have a substantially symmetrical shape,
The front end side is relatively thick thick portions 12a and 13a, and the central wall 11 side is relatively thin thin portion 12
b and 13b. The outer side surfaces 15 and 16 of these leg portions 12 and 13 are configured as linear flat surfaces, and therefore the thick wall portions 12a and 13a bulge inward from each other. Further, the thickness gradually changes in a tapered shape from the thick portions 12a and 13a to the thin portions 12b and 13b. The thick-walled portions 12a and 13a are adapted to be pressed against each other in a state where the seal packing 1 is inserted into the packing mounting groove 4, but one thick-walled portion is used to stabilize the position of the contact portion. The inner side surface 17 of the portion 12a forms a plane substantially parallel to the outer side surface 15 thereof, and the inner side surface 18 of the other thick portion 13a is an R surface, that is, a curved surface. Thereby, when the legs 12 and 13 are brought close to each other, the point that becomes the top of the arc of the inner side surface 18 is
First, it comes into contact with the inner surface 17. Also each leg 1
Beads 19 and 20 having a wedge-shaped cross section are formed on the outer side surfaces 15 and 16 of the second and the third side portions 13 and 20 so that the inner side surfaces 4a and 4b of the packing mounting groove 4 are strongly pressed against each other. The bead portions 19 and 20 are located near the tips of the leg portions 12 and 13, but are particularly aligned with the abutting portions of the leg portions 12 and 13 in the state of being attached to the packing attaching groove 4. , Its position is fixed.
【００１７】上記のように構成されたシールパッキン１
は、図２に示すようにパッキン取付溝４内に取り付けら
れるが、この取付状態では、左右の脚部１２，１３が互
いに内側へ押し付けられた形となり、その先端の厚肉部
１２ａ，１３ａ同士が互いに圧接する。そして、中央壁
部１１は、円弧状に僅かに撓んだ状態となるが、その背
面側に、該中央壁部１１と左右の薄肉部１２ｂ，１３ｂ
とに囲まれてなる中空部２１が構成される。なお、パッ
キン取付溝４の深さは、図示するように、シールパッキ
ン１の高さにほぼ一致していることが望ましく、従っ
て、このパッキン取付溝４の開口面に沿ってシールパッ
キン１の頂面１４が露出している。また、左右の脚部１
２，１３のビード部１９，２０がパッキン取付溝４の内
側面４ａ，４ｂに圧接し、パッキン取付溝４とシールパ
ッキン１との間を確実にシールしている。さらに、この
ビード部１９，２０の圧接に伴う反力が、左右の脚部１
２，１３の当接部に作用するため、それぞれの厚肉部１
２ａ，１３ａ同士が確実に圧接し、中空部２１内を密封
状態に保持することができる。The seal packing 1 constructed as described above
2 is mounted in the packing mounting groove 4 as shown in FIG. 2. In this mounting state, the left and right leg portions 12 and 13 are pressed inward with each other, and the thick-walled portions 12a and 13a at their tips are attached to each other. Press against each other. Then, the central wall portion 11 is slightly bent in an arc shape, but the central wall portion 11 and the left and right thin wall portions 12b and 13b are provided on the back side thereof.
A hollow portion 21 surrounded by and is formed. It should be noted that the depth of the packing mounting groove 4 is preferably substantially the same as the height of the seal packing 1 as shown in the figure, and therefore, the top of the sealing packing 1 is along the opening surface of the packing mounting groove 4. The surface 14 is exposed. Also, the left and right legs 1
The bead portions 19 and 20 of 2 and 13 are in pressure contact with the inner side surfaces 4a and 4b of the packing mounting groove 4 to reliably seal between the packing mounting groove 4 and the seal packing 1. Further, the reaction force caused by the pressure contact between the bead portions 19 and 20 is
Since it acts on the abutting portions of 2 and 13, each thick portion 1
The 2a and 13a are reliably pressed against each other, and the inside of the hollow portion 21 can be maintained in a sealed state.
【００１８】ボディ２とともにエアクリーナを構成する
カバー３は、ねじ等の適宜な締結手段でもってボディ２
に対し締付固定される。この状態では、図３に示すよう
に、シール壁部５がシールパッキン１に圧接して、両者
間がシールされる。ここで、上記シール壁部５は、中央
壁部１１の中央部分つまり中空部２１に対応した部分を
押圧するので、中空部２１が押し潰されながら中央壁部
１１が内側へ容易に変形する。従って、カバー３に加わ
る反力が小さく、かつ大きな圧縮変形による確実なシー
ルが得られる。また、中空部２１内には空気が封じ込め
られているので、適宜な復元力が得られ、所謂”へた
り”が抑制される。The cover 3 which constitutes an air cleaner together with the body 2 is secured to the body 2 by suitable fastening means such as screws.
It is fixed by tightening against. In this state, as shown in FIG. 3, the seal wall portion 5 is brought into pressure contact with the seal packing 1 to seal between the two. Here, since the sealing wall portion 5 presses the central portion of the central wall portion 11, that is, the portion corresponding to the hollow portion 21, the central wall portion 11 is easily deformed inward while the hollow portion 21 is crushed. Therefore, the reaction force applied to the cover 3 is small, and a reliable seal due to a large compression deformation can be obtained. Further, since the air is enclosed in the hollow portion 21, an appropriate restoring force can be obtained and so-called "sag" is suppressed.
【００１９】なお、上記実施例では、一対の脚部１２，
１３の双方に厚肉部１２ａ，１３ａが設けられており、
従って、図２のように、両者がシールパッキン１の中央
で互いに接した状態となるが、脚部１２，１３の一方の
みにより厚い厚肉部を設け、他方は一定の肉厚とするこ
とも可能である。但し、姿勢の安定性の点では、図示例
のように、脚部１２，１３がほぼ対称形状であることが
望ましい。In the above embodiment, the pair of leg portions 12,
Thick parts 12a and 13a are provided on both sides of 13,
Therefore, as shown in FIG. 2, the two are in contact with each other at the center of the seal packing 1, but it is also possible to provide a thicker thick portion only on one of the legs 12 and 13 and to make the other constant thickness. It is possible. However, in terms of posture stability, it is desirable that the legs 12 and 13 have substantially symmetrical shapes, as in the illustrated example.
【００２０】次に、図５，図６は、この発明の第２実施
例を示している。この実施例では、一対の脚部１２，１
３における厚肉部１２ａ，１３ａの内側面１７，１８
が、それぞれの外側面１５，１６とほぼ平行な平面をな
しているとともに、一方の内側面１８に、ビード部３１
が突設されている。このビード部３１は、他方の内側面
１７に部分的に強く圧接するので、やはり中空部２１内
を確実に密封状態とすることができる。また、このビー
ド部３１は、脚部１２，１３の外側面１５，１６のビー
ド部１９，２０と、取付状態で一直線上に並ぶように配
置されている。Next, FIGS. 5 and 6 show a second embodiment of the present invention. In this embodiment, a pair of legs 12,1
Inner side surfaces 17 and 18 of the thick portions 12a and 13a in FIG.
Has a plane substantially parallel to the respective outer side surfaces 15 and 16, and has a bead portion 31 on one inner side surface 18.
Is projected. Since this bead portion 31 is strongly pressed against the other inner side surface 17, the inside of the hollow portion 21 can be surely sealed. Further, the bead portion 31 is arranged so as to be aligned with the bead portions 19 and 20 of the outer side surfaces 15 and 16 of the leg portions 12 and 13 in a mounted state.
【００２１】なお、図示例では、各ビード部１９，２
０，３１は、いずれも断面半円形に突出しているが、必
ずしもこの形状に限定されるものではなく、前述した楔
形等の種々の形状が可能である。In the illustrated example, each bead portion 19, 2
Each of 0 and 31 projects in a semicircular shape in cross section, but is not necessarily limited to this shape, and various shapes such as the wedge shape described above are possible.
【００２２】また、図７，図８に示す第３実施例のよう
に、ビード部１９，２０，３１に代えて、舌片状の断面
形状を有するリップ部４１，４２，４３をそれぞれ設け
るようにしてもよい。Further, as in the third embodiment shown in FIGS. 7 and 8, instead of the bead portions 19, 20 and 31, lip portions 41, 42 and 43 having tongue-shaped cross-sectional shapes are respectively provided. You may
【００２３】次に、図９，図１０は、請求項４に対応し
た第４実施例を示している。この実施例では、特に、パ
ッキン取付溝４の底面中央に二等辺三角形の断面形状を
有する隔壁部５１が設けられており、パッキン取付溝４
底部が一対の凹溝に分けられている。Next, FIGS. 9 and 10 show a fourth embodiment corresponding to the fourth aspect. In this embodiment, in particular, a partition wall portion 51 having an isosceles triangular cross-sectional shape is provided at the center of the bottom surface of the packing mounting groove 4, and the packing mounting groove 4 is provided.
The bottom part is divided into a pair of concave grooves.
【００２４】シールパッキン１は、前述した各実施例と
同様の基本形状を有しているが、脚部１２，１３の先端
側の厚肉部１２ａ，１３ａは、前述した各実施例よりも
薄肉となっている。また、各脚部１２，１３の先端に
は、それぞれの両側に、舌片状の断面形状を有するリッ
プ部５２，５３，５４，５５が設けられている。The seal packing 1 has the same basic shape as that of each of the above-described embodiments, but the thick-walled portions 12a and 13a on the tip side of the leg portions 12 and 13 are thinner than those of each of the above-described embodiments. Has become. In addition, lip portions 52, 53, 54, 55 having a tongue-shaped cross-sectional shape are provided on both ends of each of the leg portions 12, 13 on both sides thereof.
【００２５】このシールパッキン１をパッキン取付溝４
に取り付けた状態では、図１０に示すように、各脚部１
２，１３の先端が、上記隔壁部５１を挟んで両側の凹溝
内にそれぞれ圧入される。つまり、各脚部１２，１３が
直接に当接するのではなく、隔壁部５１にそれぞれ圧接
して、内部の中空部２１を密封状態に維持するようにな
っている。ここで、上記隔壁部５１は、シールパッキン
１をパッキン取付溝４に挿入する際のガイドとしても機
能し、隔壁部５１に沿って両側の凹溝内に各脚部１２，
１３を容易に挿入できるとともに、各脚部１２，１３が
隔壁部５１に沿ってそれぞれ所定位置に保持されるた
め、取付時の姿勢が安定したものとなる。This seal packing 1 is attached to the packing mounting groove 4
As shown in FIG. 10, each leg 1 is attached to
The tips of 2 and 13 are respectively press-fitted into the recessed grooves on both sides of the partition wall 51. That is, the leg portions 12 and 13 are not in direct contact with each other, but are in pressure contact with the partition wall portion 51 to maintain the internal hollow portion 21 in a sealed state. Here, the partition wall portion 51 also functions as a guide when the seal packing 1 is inserted into the packing mounting groove 4, and along the partition wall portion 51, each leg portion 12,
13 can be easily inserted, and the legs 12 and 13 are held at predetermined positions along the partition wall 51, respectively, so that the posture at the time of mounting becomes stable.
【００２６】[0026]
【発明の効果】以上の説明で明らかなように、この発明
によれば、背面側に中空部を備えた中央壁部がシール壁
部を受けるようになるので、低反力でかつ高圧縮のシー
ルパッキンを提供することができる。特に、成形時には
略Ｕ字形に開いた状態で成形できるので、予め無端状に
連続した所望の形状に成形することが可能となる。ま
た、中空部内に空気を封じ込めることで、復元力を高
め、”へたり”を抑制することができる。As is apparent from the above description, according to the present invention, since the central wall portion having the hollow portion on the back side receives the seal wall portion, a low reaction force and a high compression force can be obtained. A seal packing can be provided. In particular, since it can be molded in a substantially U-shaped open state at the time of molding, it is possible to mold into a desired endlessly continuous shape in advance. In addition, by enclosing air in the hollow portion, the restoring force can be increased and "sag" can be suppressed.
【００２７】また請求項３のようにビード部を設けるこ
とで、パッキン取付溝に対するシールが確実となるとと
もに、中空部内を一層確実に密封状態とすることができ
る。Further, by providing the bead portion as in the third aspect, it is possible to ensure the sealing with respect to the packing mounting groove and to more surely seal the inside of the hollow portion.
【００２８】そして、請求項５のように吸気系部品のシ
ール構造に適用することにより、合成樹脂製のカバーに
大きなシール反力を与えることなくボディとカバーとの
間の確実なシールを行うことができるとともに、高圧縮
であることから、吸気系部品に振動等が加わっても良好
なシールを維持することが可能である。By applying the invention to the sealing structure of the intake system parts as described in claim 5, a reliable seal between the body and the cover can be performed without giving a large sealing reaction force to the synthetic resin cover. In addition, because of high compression, it is possible to maintain a good seal even when vibration is applied to the intake system components.
【図１】この発明に係るシール構造の第１実施例を示す
分解断面図。FIG. 1 is an exploded sectional view showing a first embodiment of a seal structure according to the present invention.
【図２】シールパッキンをパッキン取付溝に装着した状
態を示す断面図。FIG. 2 is a cross-sectional view showing a state in which a seal packing is mounted in a packing mounting groove.
【図３】カバーをボディに対し締結した状態を示す断面
図。FIG. 3 is a cross-sectional view showing a state in which the cover is fastened to the body.
【図４】シールパッキンのみの拡大断面図。FIG. 4 is an enlarged sectional view of only a seal packing.
【図５】第２実施例のシールパッキンのみを示す断面
図。FIG. 5 is a sectional view showing only the seal packing of the second embodiment.
【図６】この第２実施例のシールパッキンの装着状態を
示す断面図。FIG. 6 is a cross-sectional view showing a mounted state of the seal packing of the second embodiment.
【図７】第３実施例のシールパッキンのみを示す断面
図。FIG. 7 is a sectional view showing only the seal packing of the third embodiment.
【図８】この第３実施例のシールパッキンの装着状態を
示す断面図。FIG. 8 is a cross-sectional view showing a mounted state of the seal packing of the third embodiment.
【図９】第４実施例のシールパッキンのみを示す断面
図。FIG. 9 is a sectional view showing only the seal packing of the fourth embodiment.
【図１０】この第４実施例のシールパッキンの装着状態
を示す断面図。FIG. 10 is a cross-sectional view showing a mounted state of the seal packing of the fourth embodiment.
１…シールパッキン ４…パッキン取付溝 ５…シール壁部 １１…中央壁部 １２，１３…脚部 １２ａ，１３ａ…厚肉部 １２ｂ，１３ｂ…薄肉部 ２１…中空部 1 ... Seal packing 4 packing packing groove 5 ... Seal wall 11 ... Central wall 12, 13 ... Legs 12a, 13a ... Thick part 12b, 13b ... thin-walled portion 21 ... Hollow part
Claims (5)
れ、該パッキン取付溝に対向して他方の部材に形成した
シール壁部が圧接することで該シール壁部との間をシー
ルする弾性材料からなるシールパッキンであって、 上記シール壁部を受ける中央壁部と該中央壁部の両側に
連結された一対の脚部とを有する断面略Ｕ字形をなし、
かつ上記パッキン取付溝内に挿入した状態で一対の脚部
の先端部が互いに圧接するように少なくとも一方の脚部
の先端側に厚肉部を有するとともに、中央壁部側の部分
に相対的に薄い薄肉部を有し、この薄肉部によって、脚
部の先端部を互いに圧接させた状態で上記中央壁部の背
面側に中空部が構成されることを特徴とするシールパッ
キン。1. An elastic member which is disposed in a packing mounting groove of one member, and seals a gap between the sealing wall portion and the sealing wall portion formed on the other member so as to face the packing mounting groove. A seal packing made of a material, which has a substantially U-shaped cross section having a central wall portion for receiving the seal wall portion and a pair of legs connected to both sides of the central wall portion,
Further, at least one of the leg portions has a thick portion at the tip end side so that the tip end portions of the pair of leg portions are in pressure contact with each other in the state of being inserted into the packing mounting groove, and relatively to the central wall portion side portion. A seal packing having a thin thin portion, wherein the thin portion forms a hollow portion on the back side of the central wall portion in a state where the tips of the legs are pressed against each other.
て成形されていることを特徴とする請求項１に記載のシ
ールパッキン。2. The seal packing according to claim 1, wherein the seal packing is continuously formed in an endless shape.
溝の内側面に圧接するビード部がそれぞれ突設されてお
り、かつこの一対のビード部と、一対の脚部の先端部が
互いに当接する当接部とが、一直線上に並ぶように配置
されていることを特徴とする請求項１または２に記載の
シールパッキン。3. A bead portion, which comes into pressure contact with an inner side surface of the packing mounting groove, is provided on an outer surface of the leg portion so as to project, and the pair of bead portions and the tip portions of the pair of leg portions are mutually provided. The seal packing according to claim 1 or 2, wherein the abutting portion that abuts is arranged so as to be aligned on a straight line.
れ、該パッキン取付溝に対向して他方の部材に形成した
シール壁部が圧接することで該シール壁部との間をシー
ルする弾性材料からなるシールパッキンであって、 上記シール壁部を受ける中央壁部と該中央壁部の両側に
連結された一対の脚部とを有する断面略Ｕ字形をなし、
かつ一対の脚部の先端部が、パッキン取付溝底面中央の
隔壁部を挟んで両側の凹溝内にそれぞれ圧入されるよう
に厚肉部に構成されているとともに、中央壁部側の部分
に相対的に薄い薄肉部を有し、この薄肉部によって、取
付状態で上記中央壁部の背面側に中空部が構成されるこ
とを特徴とするシールパッキン。4. An elastic member which is disposed in a packing mounting groove of one member, and seals a space between the sealing wall portion and the sealing wall portion formed on the other member so as to face the packing mounting groove. A seal packing made of a material, which has a substantially U-shaped cross section having a central wall portion for receiving the seal wall portion and a pair of legs connected to both sides of the central wall portion,
In addition, the tips of the pair of legs are configured to be press-fitted into the concave grooves on both sides of the partition wall at the center of the bottom surface of the packing mounting groove. A seal packing having a relatively thin thin portion, and the thin portion forming a hollow portion on the back side of the central wall portion in the mounted state.
される内燃機関の吸気系部品において、上記ボディの開
口縁に上記パッキン取付溝を形成するとともに、上記カ
バーに上記パッキン取付溝の溝中央に沿うように上記シ
ール壁部を形成し、かつ上記パッキン取付溝内に請求項
１〜４のいずれかに記載のシールパッキンを配置し、こ
のシールパッキンの頂面の中央部分を上記シール壁部が
押圧するように構成したことを特徴とする吸気系部品の
シール構造。5. An intake system component for an internal combustion engine, comprising a synthetic resin body and a cover, wherein the packing mounting groove is formed at an opening edge of the body, and the center of the packing mounting groove is formed in the cover. The seal wall portion is formed along the seal packing portion, and the seal packing according to any one of claims 1 to 4 is arranged in the packing mounting groove, and the central portion of the top surface of the seal packing portion is the seal wall portion. A sealing structure for intake system parts, characterized in that it is configured to press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002019593A JP4087120B2 (en) | 2002-01-29 | 2002-01-29 | Seal structure of seal packing and intake system parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002019593A JP4087120B2 (en) | 2002-01-29 | 2002-01-29 | Seal structure of seal packing and intake system parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003222244A true JP2003222244A (en) | 2003-08-08 |
| JP4087120B2 JP4087120B2 (en) | 2008-05-21 |
Family
ID=27743381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002019593A Expired - Lifetime JP4087120B2 (en) | 2002-01-29 | 2002-01-29 | Seal structure of seal packing and intake system parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4087120B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006028228A1 (en) * | 2004-09-10 | 2006-03-16 | Nippon Valqua Industries, Ltd. | Glass substrate storage case, glass substrate exchange device, glass substrate management device, glass substrate distribution method, seal member, and seal structure using the seal member |
| JP2006111308A (en) * | 2004-10-14 | 2006-04-27 | Miraial Kk | Storage container |
| KR100634607B1 (en) | 2004-10-15 | 2006-10-16 | 현대자동차주식회사 | Sealing structure for air cleaner |
| JP2007015272A (en) * | 2005-07-08 | 2007-01-25 | Canon Inc | Recording head and sealing member used therefor |
| JP2010261368A (en) * | 2009-05-07 | 2010-11-18 | Toyota Boshoku Corp | Grommet |
| JP2010540236A (en) * | 2007-10-02 | 2010-12-24 | マン ウント フンメル ゲゼルシャフト ミット ベシュレンクテル ハフツング | Filter element with serrated seal |
| JP2011077099A (en) * | 2009-09-29 | 2011-04-14 | Saxa Inc | Waterproof structure of electronic equipment |
| JP2012253257A (en) * | 2011-06-06 | 2012-12-20 | Shin Etsu Polymer Co Ltd | Electronic apparatus and cover member using the same |
| JP2013254863A (en) * | 2012-06-07 | 2013-12-19 | Mitsubishi Electric Corp | Electromagnetic shield gasket and electromagnetic shield door device |
| JP2016148702A (en) * | 2015-02-10 | 2016-08-18 | 株式会社リコー | Housing structure, optical scanner, and image forming apparatus |
| DE102017105659A1 (en) * | 2017-03-16 | 2018-09-20 | Linhardt Gmbh & Co. Kg | Container for sterile packaging of articles under reduced pressure |
| US10744444B2 (en) | 2016-05-03 | 2020-08-18 | Mann+Hummel Gmbh | Filter Element, in Particular for Gas Filtration, and filter device |
| JP7367492B2 (en) | 2019-11-28 | 2023-10-24 | トヨタ紡織株式会社 | air cleaner |
-
2002
- 2002-01-29 JP JP2002019593A patent/JP4087120B2/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006028228A1 (en) * | 2004-09-10 | 2006-03-16 | Nippon Valqua Industries, Ltd. | Glass substrate storage case, glass substrate exchange device, glass substrate management device, glass substrate distribution method, seal member, and seal structure using the seal member |
| JP4634772B2 (en) * | 2004-10-14 | 2011-02-16 | ミライアル株式会社 | Storage container |
| JP2006111308A (en) * | 2004-10-14 | 2006-04-27 | Miraial Kk | Storage container |
| KR100634607B1 (en) | 2004-10-15 | 2006-10-16 | 현대자동차주식회사 | Sealing structure for air cleaner |
| JP2007015272A (en) * | 2005-07-08 | 2007-01-25 | Canon Inc | Recording head and sealing member used therefor |
| JP2010540236A (en) * | 2007-10-02 | 2010-12-24 | マン ウント フンメル ゲゼルシャフト ミット ベシュレンクテル ハフツング | Filter element with serrated seal |
| JP2010261368A (en) * | 2009-05-07 | 2010-11-18 | Toyota Boshoku Corp | Grommet |
| JP2011077099A (en) * | 2009-09-29 | 2011-04-14 | Saxa Inc | Waterproof structure of electronic equipment |
| JP2012253257A (en) * | 2011-06-06 | 2012-12-20 | Shin Etsu Polymer Co Ltd | Electronic apparatus and cover member using the same |
| JP2013254863A (en) * | 2012-06-07 | 2013-12-19 | Mitsubishi Electric Corp | Electromagnetic shield gasket and electromagnetic shield door device |
| JP2016148702A (en) * | 2015-02-10 | 2016-08-18 | 株式会社リコー | Housing structure, optical scanner, and image forming apparatus |
| US10744444B2 (en) | 2016-05-03 | 2020-08-18 | Mann+Hummel Gmbh | Filter Element, in Particular for Gas Filtration, and filter device |
| DE102017105659A1 (en) * | 2017-03-16 | 2018-09-20 | Linhardt Gmbh & Co. Kg | Container for sterile packaging of articles under reduced pressure |
| JP7367492B2 (en) | 2019-11-28 | 2023-10-24 | トヨタ紡織株式会社 | air cleaner |
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| Publication number | Publication date |
|---|---|
| JP4087120B2 (en) | 2008-05-21 |
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