JP2003049948A - Metal gasket - Google Patents
Metal gasketInfo
- Publication number
- JP2003049948A JP2003049948A JP2001236090A JP2001236090A JP2003049948A JP 2003049948 A JP2003049948 A JP 2003049948A JP 2001236090 A JP2001236090 A JP 2001236090A JP 2001236090 A JP2001236090 A JP 2001236090A JP 2003049948 A JP2003049948 A JP 2003049948A
- Authority
- JP
- Japan
- Prior art keywords
- holes
- metal gasket
- pair
- hole
- metal
- 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
- Exhaust Silencers (AREA)
- Gasket Seals (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】この発明に係るメタルガスケ
ットは、例えば自動車の走行用エンジンの排気系に組み
込んでこの排気系を構成すべく、互いに結合される１対
の部材の突き合わせ面同士の間の気密保持を図る為、こ
の突き合わせ面同士の間に挟持した状態で使用する。
【０００２】
【従来の技術】エンジンのシリンダヘッドから吐出され
る排気は、途中に排気浄化器や消音器を設けた排気系を
通じて大気中に放出される。この様な排気系は、これら
排気浄化器や消音器を含む複数の部材を、排気の流通方
向に関して互いに直列に接続する事で構成する為、接続
部の気密保持を図る事が必要になる。又、この気密保持
の為の構造は、高温の排気が流通する事を考慮して、十
分な耐熱性を有するものとする必要がある。又、接続作
業は、自動車の床下の限られた空間内で行なう場合が多
く、気密保持部材を組み付ける相手面が傾斜或は下向き
の状態となっている事が多い。又、接続部が上向きであ
っても、流れ作業の場合等は、組み付けの途中で移動す
る事があり、その際の振動によって上記気密保持部材が
動いてしまう事もある。これらの事を考慮して従来か
ら、上記接続部に金属板製のメタルガスケットを組み付
けると共に、このメタルガスケットが接続作業の途中で
脱落する事を防止する構造を採用する事が行なわれてい
る。
【０００３】この様な従来構造の１例として図６〜７
に、実開平４−６８２４９号公報に記載されている構造
を示す。この従来構造は、図６に示す様なエキゾースト
マニホールド１の上流端部分を図示しないエンジンのシ
リンダブロックの側面に接続する部分に関するものであ
る。上記エキゾーストマニホールド１は、このシリンダ
ブロックの側面に開口した排気ポートの数に合わせて設
けた複数本（図示の例では４本）の分岐管部２、２の下
流端に１本の合流管部３を設けて成る。これら各分岐管
部２、２の上流端部には上流端フランジ４、４を、上記
合流管部３の下流端には下流端フランジ５を、それぞれ
設けている。このうちの上流端フランジ４、４は、図７
に示す様なメタルガスケット６を介して上記シリンダブ
ロックの側面に接続し、上記下流端フランジ５には図示
しないメタルガスケットを介して、やはり図示しない排
気管の上流端を接続する。
【０００４】上記メタルガスケット６は、弾性を有する
金属板を上記上流端フランジ４の形状に合わせて菱形に
形成して成り、中央部に排気を通過させる為の透孔７
を、この透孔７を挟む２個所位置にそれぞれ杆状部材で
あるスタッドを挿通する為の１対の通孔８、８を、それ
ぞれ設けている。又、上記メタルガスケット６の反対側
縁には１対の係止片９、９を設けている。この様なメタ
ルガスケット６は上記上流端フランジ４に重ね合わせた
状態で、上記１対の係止片９、９によりこの上流端フラ
ンジ４の周縁部を抑え付け、この上流端フランジ４に仮
止めする。そして、上記各通孔８、８及びこの上流端フ
ランジ４に形成した通孔１０、１０に、上記シリンダブ
ロックの側面で排気ポートを挟む位置に突設した１対の
スタッドを挿通し、これら各スタッドの先端部で上記上
流端フランジ４から突出した部分にナットを螺合し更に
緊締する。この作業により、上記シリンダブロックの側
面と上記上流端フランジ４とを、上記メタルガスケット
６を介して結合する。
【０００５】
【発明が解決しようとする課題】図７に示す様なメタル
ガスケット６は、エキゾーストマニホールド１とシリン
ダブロックとの結合作業時に上流端フランジ４の所定部
位に仮固定しておける為、この結合作業の容易化を図れ
る。但し、係止片９、９を設ける分、材料の歩留が悪く
なり、製造コストが嵩むだけでなく、これら各係止片
９、９の間に上記上流端フランジ４を押し込む作業が面
倒で、必ずしも上記結合作業の能率化を十分に図れな
い。又、上記各係止片９、９がある為、製品である上記
メタルガスケット６をまとめて搬送する際に重ね合わせ
づらく、嵩張るだけでなく、上記各係止片９、９の先端
が他のメタルガスケット６を傷付けない様に注意する必
要がある。この為、搬送作業の能率が低下すると言った
問題もある。
【０００６】メタルガスケットを装着部に仮固定する為
の技術としてはこの他にも、実開平４−８８５０５号公
報、同４−１０７５７４号公報、同４−１２２８６２〜
５号公報、特開平１１−９４０８８号公報に記載された
ものが知られている。これら各公報に記載された従来技
術のうち、実開平４−８８５０５号公報に記載されたも
のは、上記図７に示した従来技術と同様の問題がある。
又、実開平４−１０７５７４号公報、同４−１２２８６
２〜５号公報、特開平１１−９４０８８号公報に記載さ
れたものは、特殊形状の位置決めピンが必要でその分コ
ストが嵩んだり、位置決めは図れても脱落防止が不完全
であったり、位置決めの為の係止部が互いに突き当てる
面と干渉してシール性が不十分になる可能性がある為、
その為の対策が必要になる等の問題がある。本発明のメ
タルガスケットは、この様な不都合を何れも解消すべく
発明したものである。
【０００７】
【課題を解決するための手段】本発明のメタルガスケッ
トは、前述した従来から知られているメタルガスケット
と同様に、弾性を有する金属板の中央部に流体を通過さ
せる為の透孔を、この透孔を挟む２個所位置にそれぞ
れ、スタッド或はロケートピン等の杆状部材を挿通する
為の１対の通孔を、それぞれ形成している。特に、本発
明のメタルガスケットに於いては、上記金属板の一部で
これら両通孔の中心よりも上記透孔に寄った部分を同方
向に折り曲げている。そして、上記金属板の自由状態で
の上記両通孔の反対側縁同士の距離を、これら両通孔に
挿通すべき１対の杆状部材の反対側面同士の距離よりも
小さくしている。
【０００８】
【作用】上述の様に構成する本発明のメタルガスケット
は、１対の通孔のピッチが、金属板を平坦にする方向に
弾性変形させた状態で、１対の杆状部材のピッチと実質
的に一致する。これに対して、上記金属板の自由状態で
は、上記１対の通孔のピッチが、上記１対の杆状部材の
ピッチよりも短くなる。そこで、上記金属板を弾性変形
させて上記１対の通孔のピッチを大きくした状態でこれ
ら各通孔内に上記杆状部材を挿通した後、上記金属板に
加えていた力を解除すれば、上記１対の通孔の反対側縁
が上記１対の杆状部材の反対側面に弾性的に当接する。
この結果、上記メタルガスケットが、これら両杆状部材
から不用意に脱落する事がなくなる。又、従来構造にあ
った係止片の様な突出部がない為、複数枚のメタルガス
ケットを重ね合わせ易く、且つ、他のメタルガスケット
を傷付けにくいので、搬送作業の能率向上を図れる。
【０００９】
【発明の実施の形態】図１は、本発明の実施の形態の第
１例を示している。本例は、排気管１１の端部（エキゾ
ーストマニホールドの下流端や排気浄化器、消音器の端
部を含む）に固設したフランジ１２と相手フランジとの
間の気密保持を図る為のメタルガスケット６ａに関す
る。このフランジ１２には、杆状部材であり互いに平行
に配置された１対のスタッド１３、１３の基端部（図１
の上端部）を結合固定している。上記メタルガスケット
６ａは、ステンレスのばね鋼板等の弾性を有する金属板
の中央部に排気を通過させる為の透孔７ａを、この透孔
７ａを挟む２個所位置にそれぞれ上記１対のスタッド１
３、１３を挿通する為の１対の通孔８ａ、８ａを、それ
ぞれ形成している。
【００１０】上記金属板の一部で上記両通孔８ａ、８ａ
よりも上記透孔７ａに寄った部分を、同方向（図１の上
方）に少し（例えば１０〜３０度程度）折り曲げて、１
対の折り曲げ部１４、１４を形成している。そして、上
記金属板の自由状態、即ち図１に鎖線で示した状態での
上記両通孔８ａ、８ａの反対側縁同士の距離Ｌ8 を、こ
れら両通孔８ａ、８ａに挿通すべき上記１対のスタッド
１３、１３の反対側面同士の距離Ｌ13よりも小さく（Ｌ
8 ＜Ｌ13）している。但し、上記金属板を弾性変形さ
せ、上記各折り曲げ部１４、１４を平坦にした状態で
は、上記１対の通孔８ａ、８ａのピッチが上記１対のス
タッド１３、１３のピッチと実質的に一致し、上記両通
孔８ａ、８ａの反対側縁同士の距離Ｌ8 ´が、上記１対
のスタッド１３、１３の反対側面同士の距離Ｌ13よりも
大きく（Ｌ8 ´＞Ｌ13）なる様に、各部の寸法を規制し
ている。
【００１１】上述の様に構成する本例のメタルガスケッ
ト６ａは、上記各折り曲げ部１４、１４を押し潰し（或
は引き伸ばし）た状態で、上記１対のスタッド１３、１
３同士の間に装着する。この状態では、上記１対の通孔
８ａ、８ａのピッチがこれら１対のスタッド１３、１３
のピッチと実質的に一致する為、これら各スタッド１
３、１３を上記各通孔８ａ、８ａ内に挿通できる。これ
に対して、上記金属板の自由状態では、これら１対の通
孔８ａ、８ａのピッチが、上記１対のスタッド１３、１
３のピッチよりも短くなる。そこで、上記金属板を上記
折り曲げ部１４、１４が平坦になる方向に弾性変形させ
る事により上記１対の通孔８ａ、８ａのピッチを大きく
した状態で、これら各通孔８ａ、８ａ内に上記１対のス
タッド１３、１３を挿通した後、上記金属板に加えてい
た力を解除すれば、上記１対の通孔８ａ、８ａの反対側
縁が上記１対のスタッド１３、１３の反対側面に弾性的
に当接する。この結果、上記メタルガスケット６ａが、
これら両スタッド１３、１３の間に係止されて、不用意
に脱落する事がなくなる。又、上記メタルガスケット６
ａを形成する為の金属板に無駄が生じにくく、材料の有
効利用（歩留向上）による低コスト化を図れる。更に、
上記各通孔８ａ、８ａ内に上記１対のスタッド１３、１
３を挿通する作業は容易に行なえる為、排気系を構成す
る部材同士の接続作業を容易に行なえる。
【００１２】次に、図２〜３は、本発明の実施の形態の
第２例を示している。本例のメタルガスケット６ｂの場
合には、透孔７ａの周囲に閉鎖環状の突条１５を形成し
ている。この突条１５は、台形（円弧形でも良い）の断
面形状を有し、厚さ方向の力により弾性的に圧縮され
る。この様な突条１５を形成した本例のメタルガスケッ
ト６ｂは、互いに突き合わせる１対の面同士の間で上記
突条１５を弾性的に圧縮し、当該部分の面圧を全周に亙
って高くする事により、シール性の向上を図れる。その
他の部分の構成及び作用は、上述した第１例の場合と同
様であるから、同等部分には同一符号を付して重複する
説明は省略する。
【００１３】次に、図４〜５は、本発明の実施の形態の
第３例を示している。本例の場合には、メタルガスケッ
ト６ｃを構成する金属板の一部で各通孔８ａ、８ａをそ
れぞれ挟む部分に、折り曲げ部１４ａ、１４ａと第二の
折り曲げ部１６、１６とを形成している。即ち、上記各
通孔８ａ、８ａの互いに近い側の端縁部分に互いに同方
向に折れ曲がった上記各折り曲げ部１４ａ、１４ａを形
成している。これに対して、上記各通孔８ａ、８ａの互
いに遠い側の端縁部分に互いに同方向に、上記折り曲げ
部１４ａ、１４ａとは逆方向に同じ角度だけ折れ曲がっ
た、上記各第二の折り曲げ部１６、１６を形成してい
る。従って、本例のメタルガスケット６ｃの場合には、
上記各通孔８ａ、８ａを形成した部分が傾斜部となり、
その両側に存在する平坦部を連続させた形状を有する。
この様な形状のメタルガスケット６ｃの場合も、上記１
対の通孔に挿通したスタッド１３、１３（図１参照）に
対し、容易に仮固定できる。又、本例の場合には、２個
所の折り曲げ部を有する形状に加工する為、加工時に形
状を整え易くなり、上記傾斜部の傾斜角度の調整をより
細かく行なう事ができる。しかも、この傾斜部の両側に
存在する両平坦部同士の間の差（高さ）も適宜変える事
ができる為、接続部の状況に応じて、脱洛阻止の為の構
造部分の形状をより細かく調整できる。
【００１４】尚、本発明のメタルガスケットは、組み付
け作業時に脱落する可能性がある接続部に使用するもの
であれば、排気系に組み込むガスケットに限らず、他の
種々の接続部に使用できる。又、流体を通す為の透孔と
スタッド等の杆状部材を挿通する為の１対の通孔とを備
えているメタルガスケットであれば、他の部分に別の孔
が設けられた構造にも適用可能な場合もある。
【００１５】
【発明の効果】本発明は、以上に述べた通り構成され作
用するので、例えば排気系を構成する部材同士の結合作
業を容易に行なえる、安価なメタルガスケットを得られ
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The metal gasket according to the present invention is combined with each other so as to be incorporated into, for example, an exhaust system of a driving engine of an automobile to constitute the exhaust system. In order to maintain airtightness between the mating surfaces of the pair of members, the member is used while being held between the mating surfaces. 2. Description of the Related Art Exhaust gas discharged from a cylinder head of an engine is discharged into the atmosphere through an exhaust system provided with an exhaust purifier and a silencer on the way. Since such an exhaust system is configured by connecting a plurality of members including the exhaust purifier and the muffler in series with each other in the exhaust gas flow direction, it is necessary to maintain the airtightness of the connection. In addition, the structure for maintaining the airtightness needs to have sufficient heat resistance in consideration of circulation of high-temperature exhaust gas. Further, the connection work is often performed in a limited space below the floor of the automobile, and the mating surface on which the airtight holding member is assembled is often inclined or downward. Even when the connecting portion is directed upward, in the case of a flow operation or the like, it may move during assembly, and the vibration at that time may cause the airtight holding member to move. In consideration of these matters, a metal gasket made of a metal plate is conventionally assembled to the connection portion, and a structure for preventing the metal gasket from falling off during the connection work has been employed. FIGS. 6 and 7 show an example of such a conventional structure.
2 shows a structure described in Japanese Utility Model Laid-Open No. 4-68249. This conventional structure relates to a portion connecting an upstream end portion of an exhaust manifold 1 as shown in FIG. 6 to a side surface of a cylinder block (not shown) of an engine. The exhaust manifold 1 is provided at a downstream end of a plurality of (four in the illustrated example) branch pipes 2, 2 provided in accordance with the number of exhaust ports opened on the side surfaces of the cylinder block, and one confluence pipe section. 3 is provided. An upstream end flange 4 is provided at an upstream end of each of the branch pipe sections 2, and a downstream end flange 5 is provided at a downstream end of the merging pipe section 3. Of these, the upstream end flanges 4, 4 are shown in FIG.
Is connected to the side surface of the cylinder block through a metal gasket 6 as shown in FIG. 1, and the upstream end of an exhaust pipe (not shown) is connected to the downstream end flange 5 via a metal gasket (not shown). The metal gasket 6 is formed by forming an elastic metal plate into a rhombus shape in conformity with the shape of the upstream end flange 4, and has a through hole 7 for allowing exhaust gas to pass through the center.
A pair of through holes 8, 8 for inserting studs, which are rod-shaped members, are provided at two positions sandwiching the through hole 7, respectively. Further, a pair of locking pieces 9, 9 are provided on the opposite edge of the metal gasket 6. In a state where such a metal gasket 6 is superimposed on the upstream end flange 4, the peripheral edge of the upstream end flange 4 is suppressed by the pair of locking pieces 9, 9, and is temporarily fixed to the upstream end flange 4. I do. Then, a pair of studs protruding from the side of the cylinder block so as to sandwich the exhaust port are inserted into the through holes 8 and 8 and the through holes 10 and 10 formed in the upstream end flange 4. A nut is screwed into a portion protruding from the upstream end flange 4 at the tip of the stud, and further tightened. By this operation, the side surface of the cylinder block and the upstream end flange 4 are connected via the metal gasket 6. The metal gasket 6 as shown in FIG. 7 can be temporarily fixed to a predetermined portion of the upstream end flange 4 when the exhaust manifold 1 and the cylinder block are joined together. The joining operation can be facilitated. However, the provision of the locking pieces 9, 9 deteriorates the yield of the material and increases the manufacturing cost. In addition, the work of pushing the upstream end flange 4 between the locking pieces 9, 9 is troublesome. However, it is not always possible to sufficiently improve the efficiency of the above-mentioned joining operation. In addition, since the above-mentioned locking pieces 9 and 9 are provided, when the metal gasket 6 as a product is conveyed collectively, it is difficult to overlap and bulky. Care must be taken not to damage the metal gasket 6. For this reason, there is a problem that the efficiency of the transport operation is reduced. Other techniques for temporarily fixing the metal gasket to the mounting portion include Japanese Unexamined Utility Model Publication Nos. 4-88505, 4-107574 and 4-1222862-.
No. 5, JP-A-11-94088 is known. Among the prior arts described in these publications, the one described in Japanese Utility Model Laid-Open No. 4-88505 has the same problem as the prior art shown in FIG.
Also, Japanese Utility Model Laid-Open No. 4-107574 and 4-12286.
Nos. 2-5 and JP-A-11-94088 require a specially-shaped locating pin, which increases the cost. Since the locking parts for positioning may interfere with the surfaces that abut each other, sealing performance may be insufficient,
There are problems such as the need for countermeasures. The metal gasket of the present invention has been invented in order to eliminate any such inconvenience. A metal gasket according to the present invention has a through hole for allowing a fluid to pass through a central portion of an elastic metal plate, similarly to the above-described conventionally known metal gasket. A pair of through holes for inserting a rod-like member such as a stud or a locating pin is formed at each of two positions sandwiching the through hole. In particular, in the metal gasket of the present invention, a portion of the metal plate closer to the through hole than the center of both through holes is bent in the same direction. The distance between the opposite edges of the two through holes in the free state of the metal plate is smaller than the distance between the opposite side surfaces of the pair of rod members to be inserted into the two through holes. In the metal gasket of the present invention having the above-described structure, the pitch of the pair of through holes is elastically deformed in the direction in which the metal plate is flattened. Substantially matches the pitch. On the other hand, in the free state of the metal plate, the pitch of the pair of through holes is shorter than the pitch of the pair of rod members. Then, after the metal plate is elastically deformed to increase the pitch of the pair of through holes, the rod member is inserted into each of the through holes, and then the force applied to the metal plate is released. The opposite edges of the pair of through holes elastically abut against the opposite side surfaces of the pair of rod members.
As a result, the metal gasket does not accidentally fall off from these two rod-shaped members. In addition, since there is no projecting portion like the locking piece in the conventional structure, a plurality of metal gaskets can be easily overlapped and other metal gaskets are not easily damaged, so that the efficiency of the transfer operation can be improved. FIG. 1 shows a first embodiment of the present invention. This embodiment is a metal gasket for maintaining airtightness between a flange 12 fixed to an end of an exhaust pipe 11 (including an end of an exhaust manifold, an end of an exhaust purifier, and a silencer) and a mating flange. 6a. The flange 12 has a base end of a pair of studs 13, 13 which are rod-shaped members and are arranged in parallel with each other (FIG. 1).
(Upper end) is fixedly connected. The metal gasket 6a has a through hole 7a for allowing exhaust gas to pass through a central portion of an elastic metal plate such as a stainless steel spring plate or the like, and a pair of studs 1 at two positions sandwiching the through hole 7a.
A pair of through holes 8a, 8a for inserting the third and third holes 13 are formed, respectively. The two through holes 8a, 8a are formed by a part of the metal plate.
Is bent slightly (for example, about 10 to 30 degrees) in the same direction (upward in FIG. 1),
A pair of bent portions 14 are formed. The free state of the metal plate, i.e. the Ryotsuana 8a in the state shown by the chain line in FIG. 1, the distance L 8 between the opposite side edges of 8a, these Ryotsuana 8a, the to be inserted into 8a It is smaller than the distance L13 between the opposite sides of the pair of studs 13, 13 (L
8 <and L 13) and. However, in a state where the metal plate is elastically deformed and the bent portions 14 are flat, the pitch of the pair of through holes 8a is substantially equal to the pitch of the pair of studs 13. The distance L 8 ′ between the opposite sides of the through holes 8 a, 8 a is longer than the distance L 13 between the opposite sides of the pair of studs 13 (L 8 ′> L 13 ). In this way, the dimensions of each part are regulated. The metal gasket 6a of the present embodiment having the above-described structure is configured such that the bent portions 14, 14 are crushed (or stretched) while the pair of studs 13, 1
Attach between three. In this state, the pitch of the pair of through holes 8a, 8a is
Each stud 1
The holes 3 and 13 can be inserted into the respective through holes 8a and 8a. On the other hand, in the free state of the metal plate, the pitch of the pair of through holes 8a, 8a is
3 is shorter than the pitch. Therefore, the metal plate is elastically deformed in a direction in which the bent portions 14 and 14 become flat to increase the pitch of the pair of through holes 8a and 8a. After inserting the pair of studs 13 and 13, the force applied to the metal plate is released, and the opposite side edges of the pair of through holes 8 a and 8 a are opposite to the side surfaces of the pair of studs 13 and 13. Abuts elastically. As a result, the metal gasket 6a
The studs 13 are locked between them so that they do not accidentally fall off. In addition, the above metal gasket 6
The metal plate for forming a is hardly wasted, and the cost can be reduced by effectively using the material (improving the yield). Furthermore,
In each of the through holes 8a, 8a, the pair of studs 13, 1
3 can be easily inserted, so that the members constituting the exhaust system can be easily connected to each other. Next, FIGS. 2 and 3 show a second embodiment of the present invention. In the case of the metal gasket 6b of this example, a closed annular ridge 15 is formed around the through hole 7a. The ridge 15 has a trapezoidal (or circular) cross-sectional shape, and is elastically compressed by a force in the thickness direction. The metal gasket 6b of the present embodiment having such a ridge 15 elastically compresses the ridge 15 between a pair of surfaces that abut each other, and reduces the surface pressure of the portion over the entire circumference. By increasing the height, the sealing performance can be improved. The configuration and operation of the other parts are the same as in the case of the above-described first example. Next, FIGS. 4 and 5 show a third embodiment of the present invention. In the case of this example, the bent portions 14a, 14a and the second bent portions 16, 16 are formed at portions of the metal plate constituting the metal gasket 6c, which sandwich the through holes 8a, 8a, respectively. I have. That is, the bent portions 14a, 14a bent in the same direction are formed at the end portions of the through holes 8a, 8a, which are close to each other. On the other hand, each of the second bent portions bent at the same angle in opposite directions to the bent portions 14a, 14a at the end portions of the through holes 8a, 8a on the far side from each other. 16, 16 are formed. Therefore, in the case of the metal gasket 6c of this example,
The portion where each of the through holes 8a, 8a is formed becomes an inclined portion,
It has a shape in which flat portions existing on both sides thereof are continuous.
In the case of the metal gasket 6c having such a shape as well,
The studs 13 and 13 (see FIG. 1) inserted through the pair of through holes can be temporarily temporarily fixed easily. Further, in the case of this example, since the shape is processed into a shape having two bent portions, the shape can be easily adjusted at the time of processing, and the inclination angle of the inclined portion can be adjusted more finely. In addition, since the difference (height) between the flat portions existing on both sides of the inclined portion can also be changed as appropriate, the shape of the structural portion for preventing derailment can be changed according to the condition of the connection portion. Can be fine-tuned. The metal gasket of the present invention can be used not only for a gasket to be incorporated in an exhaust system but also for various other connecting parts as long as it is used for a connecting part which may fall off during an assembling operation. Further, if the metal gasket has a through hole for passing a fluid and a pair of through holes for inserting a rod-shaped member such as a stud, a structure in which another hole is provided in another portion. May also be applicable. Since the present invention is constructed and operates as described above, it is possible to obtain an inexpensive metal gasket in which, for example, the members constituting the exhaust system can be easily joined together.
【図面の簡単な説明】
【図１】本発明の実施の形態の第１例を示す断面図。
【図２】同第２例を示す正面図。
【図３】図２のＡ−Ａ断面図。
【図４】本発明の実施の形態の第３例を示す正面図。
【図５】図４のＢ−Ｂ断面図。
【図６】エキゾーストマニホールドの１例を示す斜視
図。
【図７】従来のメタルガスケットの１例を示す斜視図。
【符号の説明】
１ エキゾーストマニホールド
２ 分岐管部
３ 合流管部
４ 上流端フランジ
５ 下流端フランジ
６、６ａ、６ｂ、６ｃ メタルガスケット
７、７ａ 透孔
８、８ａ 通孔
９ 係止片
１０ 通孔
１１ 排気管
１２ フランジ
１３ スタッド
１４、１４ａ 折り曲げ部
１５ 突条
１６ 第二の折り曲げ部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a first example of an embodiment of the present invention. FIG. 2 is a front view showing the second example. FIG. 3 is a sectional view taken along line AA of FIG. 2; FIG. 4 is a front view showing a third example of the embodiment of the present invention. FIG. 5 is a sectional view taken along line BB of FIG. 4; FIG. 6 is a perspective view showing an example of an exhaust manifold. FIG. 7 is a perspective view showing an example of a conventional metal gasket. [Description of Signs] 1 Exhaust manifold 2 Branch pipe section 3 Merging pipe section 4 Upstream end flange 5 Downstream end flange 6, 6a, 6b, 6c Metal gasket 7, 7a Through hole 8, 8a Through hole 9 Locking piece 10 Through hole DESCRIPTION OF SYMBOLS 11 Exhaust pipe 12 Flange 13 Stud 14, 14a Bending part 15 Protrusion 16 Second bending part
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3G004 AA01 BA00 BA05 DA11 DA14 EA03 EA05 FA04 GA04 3J040 AA01 AA11 BA06 EA22 FA01 HA03 HA05 HA20 ────────────────────────────────────────────────── ─── Continuation of front page F term (reference) 3G004 AA01 BA00 BA05 DA11 DA14 EA03 EA05 FA04 GA04 3J040 AA01 AA11 BA06 EA22 FA01 HA03 HA05 HA20
Claims (1)
過させる為の透孔を、この透孔を挟む２個所位置にそれ
ぞれ杆状部材を挿通する為の１対の通孔を、それぞれ形
成したメタルガスケットに於いて、上記金属板の一部で
これら両通孔の中心よりも上記透孔に寄った部分を同方
向に折り曲げる事により、上記金属板の自由状態での上
記両通孔の反対側縁同士の距離を、これら両通孔に挿通
すべき１対の杆状部材の反対側面同士の距離よりも小さ
くした事を特徴とするメタルガスケット。Claims: 1. A through hole for allowing a fluid to pass through a central portion of a metal plate having elasticity, and a pair of holes for inserting a rod member at two positions sandwiching the through hole. In each of the metal gaskets formed in the metal gasket, a portion of the metal plate closer to the through hole than the center of both the through holes is bent in the same direction, so that the free state of the metal plate Wherein the distance between the opposite sides of the two through holes is smaller than the distance between the opposite sides of the pair of rod members to be inserted into the two through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001236090A JP4514010B2 (en) | 2001-08-03 | 2001-08-03 | Metal gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001236090A JP4514010B2 (en) | 2001-08-03 | 2001-08-03 | Metal gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003049948A true JP2003049948A (en) | 2003-02-21 |
| JP4514010B2 JP4514010B2 (en) | 2010-07-28 |
Family
ID=19067428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001236090A Expired - Fee Related JP4514010B2 (en) | 2001-08-03 | 2001-08-03 | Metal gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4514010B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014125548A1 (en) * | 2013-02-14 | 2014-08-21 | 富士電機株式会社 | Cooling structure, and power conversion device |
| CN104213945A (en) * | 2013-05-30 | 2014-12-17 | 霍尼韦尔国际公司 | Valve seat and gasket for exhaust bypass valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61255250A (en) * | 1985-05-09 | 1986-11-12 | Nippon Metal Gasket Kk | Single-plate metal gasket |
| JPH05340476A (en) * | 1992-06-09 | 1993-12-21 | Japan Metal Gasket Co Ltd | Metallic gasket |
| JPH0719341A (en) * | 1993-06-30 | 1995-01-20 | Suzuki Motor Corp | Metal gasket |
| JPH074828U (en) * | 1993-06-23 | 1995-01-24 | 日本ラインツ株式会社 | Metal gasket for joint of exhaust manifold |
-
2001
- 2001-08-03 JP JP2001236090A patent/JP4514010B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61255250A (en) * | 1985-05-09 | 1986-11-12 | Nippon Metal Gasket Kk | Single-plate metal gasket |
| JPH05340476A (en) * | 1992-06-09 | 1993-12-21 | Japan Metal Gasket Co Ltd | Metallic gasket |
| JPH074828U (en) * | 1993-06-23 | 1995-01-24 | 日本ラインツ株式会社 | Metal gasket for joint of exhaust manifold |
| JPH0719341A (en) * | 1993-06-30 | 1995-01-20 | Suzuki Motor Corp | Metal gasket |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014125548A1 (en) * | 2013-02-14 | 2014-08-21 | 富士電機株式会社 | Cooling structure, and power conversion device |
| CN104904008A (en) * | 2013-02-14 | 2015-09-09 | 富士电机株式会社 | Cooling structure, and power conversion device |
| CN104213945A (en) * | 2013-05-30 | 2014-12-17 | 霍尼韦尔国际公司 | Valve seat and gasket for exhaust bypass valve |
| EP2808513A3 (en) * | 2013-05-30 | 2014-12-24 | Honeywell International Inc. | Valve seat and gasket for exhaust bypass valve |
| US9163589B2 (en) | 2013-05-30 | 2015-10-20 | Honeywell International Inc. | Valve seat and gasket for exhaust gas bypass for turbocharger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4514010B2 (en) | 2010-07-28 |
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