JP6037543B2 - gasket - Google Patents

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JP6037543B2
JP6037543B2 JP2012117133A JP2012117133A JP6037543B2 JP 6037543 B2 JP6037543 B2 JP 6037543B2 JP 2012117133 A JP2012117133 A JP 2012117133A JP 2012117133 A JP2012117133 A JP 2012117133A JP 6037543 B2 JP6037543 B2 JP 6037543B2
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portions
gasket
annular seal
groove
annular
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JP2013242025A (en
Inventor
克則 松木
克則 松木
賢司 濱野
賢司 濱野
義彦 山口
義彦 山口
宮崎 聡
聡 宮崎
貴信 荒川
貴信 荒川
邦行 土井
邦行 土井
三宅 孝志
孝志 三宅
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Uchiyama Manufacturing Corp
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Uchiyama Manufacturing Corp
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Priority to JP2012117133A priority Critical patent/JP6037543B2/en
Priority to PCT/JP2013/064024 priority patent/WO2013176108A1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F11/00Arrangements of sealings in combustion engines 
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/02Sealings between relatively-stationary surfaces
    • F16J15/021Sealings between relatively-stationary surfaces with elastic packing
    • F16J15/022Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
    • F16J15/024Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
    • F16J15/027Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with a hollow profile
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/02Sealings between relatively-stationary surfaces
    • F16J15/06Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/061Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/02Sealings between relatively-stationary surfaces
    • F16J15/06Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/062Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Gasket Seals (AREA)

Description

本発明は、2部材間に介装されて、該2部材間の密封を行うガスケットであって、複数の環状シール部を備え、当該環状シール部が互いに連結されているガスケットに関する。   The present invention relates to a gasket that is interposed between two members and seals between the two members, and includes a plurality of annular seal portions, and the annular seal portions are connected to each other.

同一平面内に複数の環状シール対象部位が存在するとき、これらシール対象部位毎の環状シール部を連結して1個のガスケットを構成することがなされる(例えば、特許文献1〜4参照)。特許文献1の図6には、自動車用エンジンのロッカーカバーにおける各気筒をシールする環状部(環状シール部)を直線部で連結したシールリングが開示されている。また、特許文献2には、複数のガスケット本体(環状シール部)と、これらガスケット本体を連結する連結部とを一体成型したガスケットが開示されている。さらに、特許文献3の図15には、ハウジング側冷却水出口、ハウジング側冷却水入口、ハウジング側オイル出口及びハウジング側オイル入口の周囲のシール装着溝にそれぞれ装着されるOリング(環状シール部)の、隣接するOリング同士が、連結部によって連結された一体型のOリングが開示されている。さらにまた、特許文献4には、シリンダヘッドの外周壁とシリンダヘッドカバーの外周壁との接合部に配される外周シール部(環状シール部)と、プラグ収容壁における相互の接合部間に配されるプラグシール部(環状シール部)とを連結したシリンダヘッドカバー用ガスケットが開示されている。   When there are a plurality of annular seal target parts in the same plane, one gasket is formed by connecting the annular seal parts for each seal target part (see, for example, Patent Documents 1 to 4). FIG. 6 of Patent Document 1 discloses a seal ring in which an annular portion (annular seal portion) that seals each cylinder in a rocker cover of an automobile engine is connected by a straight portion. Patent Document 2 discloses a gasket in which a plurality of gasket main bodies (annular seal portions) and a connecting portion for connecting these gasket main bodies are integrally molded. Further, FIG. 15 of Patent Document 3 shows an O-ring (annular seal portion) mounted in a seal mounting groove around the housing side cooling water outlet, the housing side cooling water inlet, the housing side oil outlet, and the housing side oil inlet. An integrated O-ring in which adjacent O-rings are connected by a connecting portion is disclosed. Furthermore, in Patent Document 4, an outer peripheral seal portion (annular seal portion) disposed at a joint portion between the outer peripheral wall of the cylinder head and the outer peripheral wall of the cylinder head cover and a mutual joint portion of the plug housing wall are disposed. A cylinder head cover gasket in which a plug seal portion (annular seal portion) is connected is disclosed.

また、特許文献5の第5図には、1つのガスケット本体(環状シール部)の周囲に周方向に等間隔で配置された複数の円形部を、ガスケット本体に連結部で連結したガスケットが開示されている。   Further, FIG. 5 of Patent Document 5 discloses a gasket in which a plurality of circular portions arranged at equal intervals in the circumferential direction around one gasket main body (annular seal portion) are connected to the gasket main body by a connecting portion. Has been.

特開平8−246952号公報JP-A-8-246952 特許第4400699号公報Japanese Patent No. 4400759 特許第4425885号公報Japanese Patent No. 4425885 特開2006−144654号公報JP 2006-144654 A 実開昭63−135060号公報Japanese Utility Model Publication No. 63-135060

ところで、前記のように複数の環状シール部を連結部で連結して一体としたガスケットは、前記シール対象部位に形成された所定の溝に収納させた状態で前記2部材間に介装される。この場合、各環状シール部の相対位置と、前記シール対象部位に形成される各環状溝の相対位置との間に加工公差が不可避的に生じる。そのため、それぞれの環状溝に対応する環状シール部を嵌め込み収納させようとすると、当該環状シール部同士が、連結部によって互いに接近する方向に引張力が作用した状態で、あるいは、互いに離反する方向に反力が作用した状態で、2部材間に介装されることになる。このような引張力や反力が作用した状態では、環状シール部において、連結部との接合部のみに、前記した内部応力が発生することになるので、この部分においてシール状態に影響が生じることになる。このため、環状シール部の均一なシール状態が乱され、シール性能(機能)に影響を生じることになる。また、環状シール部と連結部との接合部に内部応力が付与された状態で前記介装がなされることになるため、長期の使用においては前記内部応力が蓄積され、前記接合部が破断し、シール機能が低下する事態に至ることも予想される。   By the way, as described above, a gasket in which a plurality of annular seal portions are connected and integrated by a connecting portion is interposed between the two members in a state of being housed in a predetermined groove formed in the seal target portion. . In this case, a processing tolerance is inevitably generated between the relative position of each annular seal portion and the relative position of each annular groove formed in the seal target portion. Therefore, when the annular seal portions corresponding to the respective annular grooves are fitted and housed, the annular seal portions are in a state in which a tensile force acts in a direction in which the annular seal portions approach each other by the connecting portions, or in directions away from each other. The reaction force is interposed between the two members. In the state in which such a tensile force or reaction force is applied, the internal stress is generated only in the joint portion with the connecting portion in the annular seal portion. Therefore, the seal state is affected in this portion. become. For this reason, the uniform sealing state of the annular seal portion is disturbed, and the sealing performance (function) is affected. Further, since the interposition is performed in a state where internal stress is applied to the joint portion between the annular seal portion and the connecting portion, the internal stress is accumulated in long-term use, and the joint portion is broken. It is also expected that the sealing function will deteriorate.

特許文献1に開示されたシールリングにおける複数の環状部は、ロッカーカバーにおける各気筒をシールするものであるが、各環状部間の相対位置とこれらが嵌合される溝間の相対位置とのずれによる前記問題点及びその解決策については言及されていない。また、特許文献2は、ガスケット本体を紐状の連結部で連結する場合の強度不足に起因する撓みや捩れによって複数のガスケット本体が相対変位し易い点に着目している。そして、この問題点を解決するため、特許文献2では、連結部に屈曲部を設けるとともに、この屈曲部及びその近傍の断面積が拡大する拡大部を設け、屈曲部及び拡大部がガスケット本体の相対変位を許容する曲げ弾性を有するように構成されている。しかし、屈曲部及び拡大部が曲げ弾性を有してはいるが、この曲げ弾性を伴ってガスケット本体を位置決めしたときには、ガスケット本体と連結部との接合部にやはり応力が蓄積され、これがシール機能に影響を及ぼすことにもなると考えられる。特に、曲げ弾性を有しているとされる部分は、断面積が拡大する拡大部であり、このように断面積が大きな部分の曲げ弾性を伴い位置決めしたときには、連結部の両端のガスケット本体との接合部に大きな応力が蓄積されることは充分に予想されるところである。   The plurality of annular portions in the seal ring disclosed in Patent Document 1 seals each cylinder in the rocker cover, but the relative position between the annular portions and the relative position between the grooves into which they are fitted. No mention is made of the above-mentioned problems caused by deviations and solutions. Patent Document 2 focuses on the fact that a plurality of gasket bodies are easily displaced relatively by bending or twisting due to insufficient strength when the gasket bodies are connected by a string-like connecting portion. And in order to solve this problem, in patent document 2, while providing a bending part in a connection part, this bending part and the expansion part to which the cross-sectional area of the vicinity expands are provided, and a bending part and an expansion part are a gasket main body. It is configured to have bending elasticity that allows relative displacement. However, although the bent part and the enlarged part have bending elasticity, when the gasket body is positioned with this bending elasticity, stress is also accumulated at the joint between the gasket body and the connecting part, which is the sealing function. It may also affect the In particular, the portion having bending elasticity is an enlarged portion having an enlarged cross-sectional area. Thus, when positioning is performed with bending elasticity of a portion having a large cross-sectional area, It is sufficiently expected that a large stress is accumulated in the joint portion.

さらに、特許文献3に開示された一体型のOリングは、それぞれ、ハウジングにおける冷却水の入口及び出口、オイルの入口及び出口をシールするものであり、隣接するOリングが連結部で連結されている。しかし、本特許文献3においても、特許文献1と同様に、各Oリングの相対位置とこれらが嵌合される溝間の相対位置とのずれによる前記問題点及びその解決策については言及されていない。特許文献4に開示されたガスケットは、2種の環状シール部(外周シール部及びプラグシール部)がそれぞれ連結片を備え、この連結片同士を連結させた状態でシリンダヘッドとシリンダヘッドカバーとの接合部に介装されるものである。この場合も、各シール部の相対位置とこれらが嵌合される溝間の相対位置とのずれによる前記問題点及びその解決策については言及されていない。そして、特許文献5における1つのガスケット本体の周囲に周方向に等間隔で配置された複数の円形部は、シリンダヘッド等の被取付部材に形成された円形溝に対してその溝壁のいずれかに圧接状態で装着されることによって、ガスケット本体を所定の位置に位置決めするものである。しかし、環状シール部に相当するものは1個のガスケット本体のみであって、複数の円形部はシール機能に関与するものではなく、複数の環状シール部を連結部で連結して構成されるガスケットとは構成的に異なる。   Further, the integrated O-ring disclosed in Patent Document 3 seals the inlet and outlet of cooling water and the inlet and outlet of oil in the housing, respectively, and adjacent O-rings are connected by a connecting portion. Yes. However, also in this patent document 3, like the patent document 1, the said problem and the solution by the shift | offset | difference of the relative position of each O-ring and the relative position between the groove | channel which these fit are mentioned. Absent. In the gasket disclosed in Patent Document 4, two kinds of annular seal portions (peripheral seal portion and plug seal portion) each include a connecting piece, and the cylinder head and the cylinder head cover are joined in a state where the connecting pieces are connected to each other. It is inserted in the part. Also in this case, the above-mentioned problem and the solution due to the deviation between the relative position of each seal portion and the relative position between the grooves into which they are fitted are not mentioned. And the several circular part arrange | positioned in the circumference direction at equal intervals around the periphery of one gasket main body in patent document 5 is either of the groove wall with respect to the circular groove formed in to-be-attached members, such as a cylinder head. The gasket main body is positioned at a predetermined position by being mounted in a pressure contact state. However, what corresponds to the annular seal portion is only one gasket body, and the plurality of circular portions are not involved in the sealing function, and the gasket is constituted by connecting the plurality of annular seal portions by the connecting portions. Is structurally different.

本発明は、上記に鑑みなされたもので、複数の環状シール部を連結部で連結して一体としたガスケットであって、簡単な構成でありながら、シール性能に影響を与えることなく、所定のシール対象部位に無理なく取付けることができるガスケットを提供することを目的としている。 The present invention has been made in view of the above, and is a gasket in which a plurality of annular seal portions are connected and integrated with each other by a connecting portion, and has a simple configuration and has a predetermined configuration without affecting the sealing performance. An object of the present invention is to provide a gasket that can be easily attached to a site to be sealed.

本発明に係るガスケットは、2部材の一方の部材に形成された溝に収納された状態で当該2部材間に介装されて、該2部材間の密封を行うガスケットにおいて、複数のシール対象部位毎に適用される複数の環状シール部と、当該環状シール部同士を連結する連結部とを含み、前記環状シール部と連結部とは弾性材料による一体成型体からなり、前記溝は、前記複数の環状シール部をそれぞれ収納する環状凹溝と、当該環状凹溝間に通じ前記連結部を収納する連結凹溝とを有し、前記連結部には、該連結部によって互いに連結された環状シール部の相対位置を調整し得る緩衝部が設けられ、一方、前記連結凹溝には、前記緩衝部に対応する位置に当該緩衝部の変形挙動を許容し得る拡幅空所が形成されていることを特徴とする。

Gasket according to the present invention, in a state of being housed in one member formed in a groove of the two members is interposed between the two members, the gasket performs the sealing between the two members, a plurality of sealing target portion A plurality of annular seal portions that are applied every time, and a connecting portion that connects the annular seal portions, the annular seal portion and the connecting portion are formed of an integrally molded body made of an elastic material, and the groove includes the plurality of grooves. Each having an annular groove for receiving the annular seal portion, and a connecting groove for receiving the connecting portion through the annular groove, and the connecting portions connected to each other by the connecting portion. A buffer portion that can adjust the relative position of the buffer portion is provided, and on the other hand, a widening space that can allow deformation behavior of the buffer portion is formed in the connection concave groove at a position corresponding to the buffer portion . It is characterized by.

これによれば、複数の環状シール部が連結部によって連結されているから、1個のガスケットとして取り扱うことができ、前記溝に収納させる組付け作業の効率化が図られる。また、複数のシール対象部位に適用される複数の環状シール部を一括する1個のガスケットとして効率的に製造することができる。連結部には、緩衝部が設けられているから、加工公差等によって、ガスケットの互いに連結された環状シール部の相対位置と、これら環状シール部を収納する溝の相対位置とのずれが生じても、この緩衝部の作用によって調整され、前記溝に対するガスケットの収納が的確になされる。そして、このように、これら相対位置のずれを緩衝部でしなやかに受け止め、調整するので、環状シール部において、連結部との接合部に生じる内部応力を小さくすることができ、環状シール部に及ぼす影響を小さくすることができる。また、連結部はシール性に直接関与しないから、連結部に緩衝部が存在しても環状シール部によるシール性が低下する懸念がない。   According to this, since the plurality of annular seal portions are connected by the connecting portion, they can be handled as one gasket, and the efficiency of the assembling work stored in the groove can be improved. Moreover, it can manufacture efficiently as one gasket which bundles the some annular seal part applied to a some seal | sticker object site | part. Since the buffer portion is provided in the connecting portion, a shift between the relative position of the annular seal portions connected to each other of the gasket and the relative position of the groove that accommodates these annular seal portions occurs due to processing tolerances or the like. In addition, the gasket is adjusted by the action of the buffer portion, so that the gasket is properly stored in the groove. And since the shift | offset | difference of these relative positions is received and adjusted flexibly by the buffer part in this way, the internal stress which arises in a junction part with a connection part can be made small in an annular seal part, and it exerts on an annular seal part. The influence can be reduced. Further, since the connecting portion does not directly relate to the sealing performance, there is no concern that the sealing performance due to the annular sealing portion is lowered even if a buffer portion is present in the connecting portion.

本発明に係るガスケットにおいて、前記緩衝部は、屈曲形状部からなるもの、あるいは、波形形状部からなるものであっても良い。これによれば、屈曲形状部あるいは波形形状部の開閉変形により緩衝作用を発揮するので、環状シール部において、連結部との接合部に生じる内部応力を小さなものとすることができる。また、これら緩衝部を含むガスケットの作製が容易になされる。   In the gasket according to the present invention, the buffer portion may be a bent shape portion or a wavy shape portion. According to this, since the buffer action is exhibited by opening and closing deformation of the bent shape portion or the waveform shape portion, the internal stress generated in the joint portion with the connecting portion can be reduced in the annular seal portion. In addition, a gasket including these buffer portions can be easily manufactured.

本発明に係るガスケットにおいて、前記溝には位置合せ部が形成され、前記緩衝部と前記環状シール部との間の前記連結部に、前記位置合せ部に整合する形状の異形部を備えているものとしても良い。
これによれば、連結部は、溝に形成された位置合せ部に整合する形状の異形部を備えているから、当該ガスケットを溝に収納させる際、異形部を位置合せ部に整合させることによって、複数の環状シール部が、前記溝のそれぞれの正規の位置に正しく収納される。このように、環状シール部の位置を優先して決めることができるから、位置決めによる歪を緩衝部による位置調整によって吸収することができ、さらに良好なシール機能が得られる。
In the gasket according to the present invention, an alignment portion is formed in the groove, and the connecting portion between the buffer portion and the annular seal portion is provided with a deformed portion having a shape matching the alignment portion. It is good as a thing.
According to this, connection portions, because they with a profiled section having a shape matching the section was I position if formed in the groove, the gasket when causing accommodated in the groove, the portion not I position coupling profiled section By aligning, the plurality of annular seals are correctly stored in their respective normal positions in the groove. As described above, since the position of the annular seal portion can be determined with priority, distortion due to positioning can be absorbed by position adjustment by the buffer portion, and a better sealing function can be obtained.

本発明に係るガスケットにおいて、前記溝には位置合せ部が形成され、前記連結部における前記環状シール部との接合部に、前記位置合せ部に整合する形状の異形部を備えているものとしても良い。
これによれば、連結部と環状シール部との接合部において位置合わせがなされるから、環状シール部の位置をより優先的かつ的確に決めることができる。また、これによる歪のほぼ全てが緩衝部で吸収されることになり、より良好なシール機能が得られる。
In the gasket according to the present invention, it said the groove is formed part was I position if, at the junction between the annular sealing portion in the connecting portion, and with a profiled section that conforms to the shape of the position so I engaging portion It is good as well.
According to this, since the alignment is performed at the joint portion between the connecting portion and the annular seal portion, the position of the annular seal portion can be determined more preferentially and accurately. In addition, almost all of the distortion caused by this is absorbed by the buffer portion, and a better sealing function can be obtained.

本発明のガスケットによれば、複数の環状シール部を連結部で連結して一体としているから、2部材間に介装させる組付け作業が効率的になされる。そして、簡単な構成でありながら、緩衝部の存在により、シール性能に影響を及ぼすことなく、所定のシール対象部位に環状シール部を無理なく組付けることができる。   According to the gasket of the present invention, since the plurality of annular seal portions are connected and integrated by the connecting portion, the assembling work to be interposed between the two members is efficiently performed. And although it is simple structure, an annular seal part can be assembled | attached to a predetermined seal | sticker object site | part without a great influence, without affecting sealing performance by presence of a buffer part.

本発明の第1の実施形態に係るガスケットをシール対象の2部材間に介装して、該2部材間を密封する状態を示した要部の断面図である。It is sectional drawing of the principal part which showed the state which interposes the gasket which concerns on the 1st Embodiment of this invention between two members to be sealed, and seals between the two members. 図1におけるA−A線矢視断面図である。It is an AA arrow directional cross-sectional view in FIG. 同実施形態のガスケットの変形例を示す図2と同様図である。It is the same figure as FIG. 2 which shows the modification of the gasket of the embodiment. 本発明の第2の実施形態に係るガスケットを示す図2と同様図である。It is a figure similar to FIG. 2 which shows the gasket which concerns on the 2nd Embodiment of this invention. 本発明の第3の実施形態に係るガスケットを示す図2と同様図である。It is a figure similar to FIG. 2 which shows the gasket which concerns on the 3rd Embodiment of this invention. (a)〜(d)は本発明のガスケットにおける図1に対応する断面形状の他の形態の種々の例を示す図である。(A)-(d) is a figure which shows the various examples of the other form of the cross-sectional shape corresponding to FIG. 1 in the gasket of this invention. (a)〜(e)は図2におけるB−B線矢視部の種々の形状を示す断面図である。(A)-(e) is sectional drawing which shows the various shapes of the BB arrow directional part in FIG.

以下に本発明の実施の形態について、図面を参照して説明する。図1及び図2は本発明の第1の実施形態に係るガスケットを示している。本実施形態のガスケット1は、2部材20,30間に介装されて、該2部材20,30間の密封を行うガスケットである。図例の前記2部材20,30は、エンジンのシリンダブロック20とこれに締結によって合体されるオイルクーラ30とからなることを示している。しかし、これに限定されず、複数のシール対象部位を有し、両者の間にガスケットが介装され、当該ガスケット1によって両者の間が密封されるよう構成されるものであれば、他の形態の2部材であっても良い。前記ガスケット1は、複数(図例では3個)の環状シール部2,3,4と、当該環状シール部2,3同士及び環状シール部2,4同士をそれぞれ連結する連結部5,6とを含む。環状シール部2,3,4及び連結部5,6を含む本実施形態のガスケット1は、ゴム材料による一体成型体によって構成される。連結部5,6の途中には、後記する緩衝部7,8が形成されている。   Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a gasket according to a first embodiment of the present invention. The gasket 1 of the present embodiment is a gasket that is interposed between two members 20 and 30 and seals between the two members 20 and 30. The two members 20 and 30 in the illustrated example are composed of a cylinder block 20 of an engine and an oil cooler 30 combined with the cylinder block 20 by fastening. However, the present invention is not limited to this, as long as it has a plurality of seal target parts, a gasket is interposed between the two parts, and the gasket 1 is configured to be sealed between the two. These two members may be sufficient. The gasket 1 includes a plurality (three in the illustrated example) of annular seal portions 2, 3, and 4, and connecting portions 5 and 6 that connect the annular seal portions 2 and 3 and the annular seal portions 2 and 4, respectively. including. The gasket 1 of the present embodiment including the annular seal portions 2, 3, 4 and the connecting portions 5, 6 is constituted by an integrally molded body made of a rubber material. In the middle of the connecting portions 5 and 6, buffer portions 7 and 8 to be described later are formed.

前記シリンダブロック20には、冷却水(不凍液)流通用ボア21及び2個のオイル流通用ボア22(1個は不図示)が形成されている。一方、オイルクーラ30には、これらシリンダブロック20の各ボアに対応する位置に、冷却水流通用ボア31、オイル流通用ボア32,33が形成されている。そして、オイルクーラ30側の各ボア31,32,33の回りのシリンダブロック20側の面には、前記環状シール部2,3,4が嵌め込まれる環状凹溝(溝)34,35,36が形成されている。また環状凹溝34,35間には、両環状凹溝34,35に通じる直状の連結凹溝(溝)37が、環状凹溝34,36間には、両環状凹溝34,36に通じる直状の連結凹溝(溝)38が、それぞれ形成されている。連結凹溝37,38の溝深さは、前記環状凹溝34,35,36の溝深さより浅く形成されている。 The cylinder block 20 is formed with a cooling water (antifreeze) circulation bore 21 and two oil circulation bores 22 (one is not shown). On the other hand, the oil cooler 30 is formed with cooling water circulation bores 31 and oil circulation bores 32 and 33 at positions corresponding to the bores of the cylinder block 20 . And on the surface on the cylinder block 20 side around the bores 31, 32, 33 on the oil cooler 30 side, annular concave grooves (grooves) 34, 35, 36 into which the annular seal portions 2, 3, 4 are fitted are provided. Is formed. Further, a straight connecting groove (groove) 37 communicating with both annular grooves 34, 35 is formed between the annular grooves 34, 35, and both annular grooves 34, 36 are disposed between the annular grooves 34, 36. A straight connection concave groove (groove) 38 that communicates with each other is formed. The groove depth of the connecting concave grooves 37 and 38 is formed shallower than the groove depth of the annular concave grooves 34, 35 and 36.

前記環状シール部2は、オイルクーラ30の前記冷却水流通用ボア31の回りに形成される前記環状凹溝34に嵌め入れられて収納される。また、前記環状シール部3,4は、オイルクーラ30の前記オイル流通用ボア32,33の回りに形成される前記環状凹溝35,36にそれぞれ嵌め入れられて収納される。さらに、前記連結部5,7は、前記連結凹溝37,38にそれぞれ嵌め入れられて収納される。該連結凹溝37,38における長手方向略中間部であって緩衝部7,8に対応する位置の片側溝壁には、平面視して略方形状の凹部37a,38aがそれぞれ形成されている。この凹部37a,38aによって、連結凹溝37,38の溝幅が拡大する拡幅空所37a0,38a0が形成される。   The annular seal portion 2 is fitted and accommodated in the annular groove 34 formed around the cooling water circulation bore 31 of the oil cooler 30. The annular seal portions 3 and 4 are fitted into and accommodated in the annular concave grooves 35 and 36 formed around the oil circulation bores 32 and 33 of the oil cooler 30, respectively. Further, the connecting portions 5 and 7 are accommodated in the connecting concave grooves 37 and 38, respectively. Recesses 37a and 38a that are substantially rectangular in a plan view are formed in one-side groove walls at positions substantially corresponding to the buffer portions 7 and 8 in the longitudinal direction in the connecting grooves 37 and 38, respectively. . By the concave portions 37a and 38a, widening spaces 37a0 and 38a0 are formed in which the groove widths of the connecting concave grooves 37 and 38 are increased.

本実施形態において、前記連結部5,6の途中に形成される緩衝部7,8は、平面視して山形であって、連結部5,6の幅方向(連結凹溝37,38の溝幅方向)の一方に突出するよう屈曲された屈曲形状部7a,8aからなる。環状シール部2,3,4及び連結部5,6はゴム材料による成型体からなり、緩衝部7,8は弾性特性を有する材料からなる屈曲形状部となっているので、緩衝部7,8が矢印aに示す方向に変形し易くなる。その結果、連結部5,6にその長手方向に沿った引張力や反力が作用すると、緩衝部7,8、即ち、屈曲形状部7a,8aが矢印b方向に沿って開閉するように挙動する。したがって、前記連結凹溝37,38に形成される前記凹部37a,38aは、該凹部37a,38aによって溝幅が拡大するよう形成される前記拡幅空所37a0,38a0が、緩衝部7,8のa方向及びb方向への前記挙動を許容し得る大きさとなるように形成される。
なお、この実施形態において、緩衝部7,8の屈曲形状部7a,8aを、連結凹溝37,38の溝底方向に突出する山形の形状としても良い。この場合、前記凹部37a,38aは連結凹溝37,38の溝底部に形成される。
In the present embodiment, the buffer portions 7 and 8 formed in the middle of the connecting portions 5 and 6 are mountain-shaped in plan view, and the width direction of the connecting portions 5 and 6 (grooves of the connecting concave grooves 37 and 38). It consists of bent-shaped portions 7a and 8a bent so as to protrude to one side in the width direction). Since the annular seal portions 2, 3, 4 and the connecting portions 5, 6 are formed of a molded body made of a rubber material, and the buffer portions 7, 8 are bent portions made of a material having elastic characteristics, the buffer portions 7, 8 Is easily deformed in the direction indicated by the arrow a. As a result, when a tensile force or reaction force along the longitudinal direction is applied to the connecting portions 5 and 6, the buffer portions 7 and 8, that is, the bent portions 7a and 8a behave so as to open and close along the arrow b direction. To do. Therefore, the recesses 37a and 38a formed in the connecting recess grooves 37 and 38 are formed so that the widening spaces 37a0 and 38a0 formed so that the groove width is expanded by the recesses 37a and 38a are It is formed to have a size that allows the above behavior in the a direction and the b direction.
In this embodiment, the bent shape portions 7a and 8a of the buffer portions 7 and 8 may have a mountain shape protruding in the groove bottom direction of the connecting concave grooves 37 and 38. In this case, the concave portions 37a and 38a are formed at the groove bottom portions of the connecting concave grooves 37 and 38.

前記のように構成されたガスケット1は、オイルクーラ30に形成された環状凹溝34,35,36及び連結凹溝37,38に収納された状態で前記シリンダブロック20とオイルクーラ30との間に介装されて、シリンダブロック20とオイルクーラ30との間を密封するよう用いられる。即ち、オイルクーラ30の前記環状凹溝34,35,36に環状シール部2,3,4がそれぞれ嵌め込まれ、連結凹溝37,38に連結部5,6がそれぞれ嵌め込まれる。連結凹溝37,38に対する連結部5,6の嵌め込みの際には、前記連結凹溝37,38の前記凹部37a,38aによる前記拡幅空所37a0,38a0に、前記緩衝部7,8が整合するように位置付けられる。ところで、前記のように、各環状シール部2,3,4の相対位置と、これらに対応する各環状凹溝34,35,36の相対位置との間に不可避的に加工公差が生じる。また、連結部5,6の長さと、該連結部5,6のそれぞれに対応する連結凹溝37,38の長さとに加工公差が生じる。そのため、このような加工公差がある場合、前記嵌め入れの際に、連結部5,6にその長手方向に沿った引張力あるいは反力が作用する。しかし、この引張力あるいは反力は、大半が前記緩衝部7,8の前記a方向及びb方向への前記挙動によって吸収される。したがって、各環状凹溝34,35,36への各環状シール部2,3,4の嵌め入れが無理なく的確になされる。また、連結部5の環状シール部2,3との接合部5a,5b及び連結部6の環状シール部2,4との接合部6a,6bに付与される内部応力が低減される。これによって、後記するシリンダブロック20とオイルクーラ30との締結状態が長く維持されても、前記接合部5a,5b,6a,6bに内部応力が蓄積されず、これらの部分で破断に至る事態が生じ難くなり、環状シール部2,3,4の所定のシール機能が維持される。   The gasket 1 configured as described above is disposed between the cylinder block 20 and the oil cooler 30 in a state of being accommodated in the annular concave grooves 34, 35, 36 formed in the oil cooler 30 and the coupling concave grooves 37, 38. It is used to seal between the cylinder block 20 and the oil cooler 30. That is, the annular seal portions 2, 3, and 4 are fitted in the annular concave grooves 34, 35, and 36 of the oil cooler 30, and the coupling portions 5 and 6 are fitted in the coupling concave grooves 37 and 38, respectively. When the connecting portions 5 and 6 are fitted into the connecting concave grooves 37 and 38, the buffer portions 7 and 8 are aligned with the widened spaces 37a0 and 38a0 by the concave portions 37a and 38a of the connecting concave grooves 37 and 38. Positioned to do. By the way, as described above, a processing tolerance is inevitably generated between the relative positions of the annular seal portions 2, 3, 4 and the relative positions of the corresponding annular concave grooves 34, 35, 36. Further, a processing tolerance is generated between the length of the connecting portions 5 and 6 and the length of the connecting concave grooves 37 and 38 corresponding to the connecting portions 5 and 6, respectively. Therefore, when there is such a processing tolerance, a tensile force or a reaction force along the longitudinal direction acts on the connecting portions 5 and 6 during the fitting. However, most of the tensile force or reaction force is absorbed by the behavior of the buffer portions 7 and 8 in the a and b directions. Therefore, the annular seal portions 2, 3, and 4 are fitted into the annular concave grooves 34, 35, and 36 without difficulty and accurately. Further, internal stress applied to the joint portions 5a and 5b of the connecting portion 5 with the annular seal portions 2 and 3 and the joint portions 6a and 6b of the joint portion 6 with the annular seal portions 2 and 4 is reduced. As a result, even if the fastening state between the cylinder block 20 and the oil cooler 30 to be described later is maintained for a long time, internal stress is not accumulated in the joint portions 5a, 5b, 6a, and 6b, and a breakage occurs at these portions. It becomes difficult to occur, and the predetermined sealing function of the annular seal portions 2, 3 and 4 is maintained.

シリンダブロック20と、前記のようにガスケット1が嵌め込みによって収納されたオイルクーラ30とを合体させて、シリンダブロック20とオイルクーラ30とが相互にボルト(不図示)等で締結される。図例の環状シール部2,3,4は、断面が楕円形状とされ、その長径が前記締結方向(環状凹溝34,35,36の深さ方向)に向くよう形成される。そして、前記締結において、シリンダブロック20と、各環状凹溝34,35,36との間で圧縮されるよう、環状シール部2,3,4の断面における各長径の寸法が設定される。また、環状シール部2,3,4の短径の寸法は、各環状凹溝34,35,36の溝幅寸法より小さく設定される。図1は、シリンダブロック20とオイルクーラ30とが所定の締結状態とされたことを示している。図1における2点鎖線は、環状シール部2,3の原形状を示しており、この締結状態では、環状シール部2,3は圧縮されて、実線のように各環状凹溝34,35をほぼ満たすように弾性変形した状態とされる。また、連結部5の幅寸法は、前記連結凹溝37の溝幅寸法より小さく、且つ、厚みは、前記所定の締結状態で、シリンダブロック20と連結凹溝37との間で圧縮されない寸法に設定される。図1では、環状シール部4、環状凹溝36、連結部および連結凹溝38は現れていないが、これらの寸法関係等も同様に設定される。 The cylinder block 20 and the oil cooler 30 in which the gasket 1 is accommodated by fitting as described above are combined, and the cylinder block 20 and the oil cooler 30 are fastened to each other with bolts (not shown) or the like. The annular seal portions 2, 3 and 4 in the figure have an oval cross section and are formed so that the major axis thereof faces the fastening direction (the depth direction of the annular grooves 34, 35 and 36). And in the said fastening, the dimension of each long diameter in the cross section of the cyclic | annular seal | sticker parts 2, 3, and 4 is set so that it may compress between the cylinder block 20 and each cyclic | annular concave groove 34,35,36. Moreover, the dimension of the short diameter of the annular seal portions 2, 3, 4 is set to be smaller than the groove width dimension of each of the annular concave grooves 34, 35, 36. FIG. 1 shows that the cylinder block 20 and the oil cooler 30 are in a predetermined fastening state. A two-dot chain line in FIG. 1 indicates the original shape of the annular seal portions 2 and 3, and in this fastening state, the annular seal portions 2 and 3 are compressed, and the annular concave grooves 34 and 35 are formed as indicated by solid lines. It is in a state of being elastically deformed so as to be almost satisfied. In addition, the width dimension of the connecting portion 5 is smaller than the groove width dimension of the connecting recess groove 37, and the thickness is a dimension that is not compressed between the cylinder block 20 and the connecting recess groove 37 in the predetermined fastening state. Is set. In FIG. 1, the annular seal portion 4, the annular concave groove 36, the coupling portion 6, and the coupling concave groove 38 do not appear, but their dimensional relationships and the like are similarly set.

前記した緩衝部の機能に加えて、前記のようなシリンダブロック20とオイルクーラ30との締結状態では、環状シール部2,3,4が、シール対象部位としての前記各ボア回りに圧縮状態で介在されるから、これらシール対象部位が密封される。また、連結部5,6はガスケット1のシール機能に関与せず、しかも、前記締結状態で圧縮されないように構成されているから、各環状シール部2,3,4の圧縮によるシール機能の発揮に影響せず、ガスケット1の長期のシール機能が良好に維持される。さらに、3個の環状シール部2,3、4が連結部5,6によって連結されて一体とされているから、これらを個々に作製する場合に比べて、保管性、輸送性に優れ、且つ、前記シリンダブロック20及びオイルクーラ30に対する組付け作業が効率的になされる。   In addition to the function of the buffer portion described above, in the fastening state of the cylinder block 20 and the oil cooler 30 as described above, the annular seal portions 2, 3, and 4 are compressed around the respective bores as the seal target portions. Since they are interposed, these parts to be sealed are sealed. Moreover, since the connection parts 5 and 6 do not participate in the sealing function of the gasket 1 and are configured not to be compressed in the fastening state, the sealing function is exhibited by the compression of the annular seal parts 2, 3 and 4. The long-term sealing function of the gasket 1 is maintained well. Furthermore, since the three annular seal portions 2, 3, and 4 are connected and integrated by the connecting portions 5 and 6, they are superior in storage and transportability compared to the case where these are individually manufactured, and Assembling work with respect to the cylinder block 20 and the oil cooler 30 is efficiently performed.

図3は、前記第1の実施形態の変形例を示している。この例では、緩衝部7,8が波形形状部7b,8bからなる点で図2に示す例と異なる。即ち、当該波形形状部7b,8bは、平面視して2つの山形からなり、この山形は連結部5,6の幅方向(連結凹溝37,38の溝幅方向)の両方に突出するよう連なって形成されている。連結凹溝37,38の緩衝部7,8に対応する部位には、各両溝壁に各一対の凹部37b,38bが形成されている。この例の場合、前記の例と同様に緩衝部7,8が矢印aに示す方向に変形し易く、これによって、連結部5,6にその長手方向に沿った引張力や反力が作用すると、緩衝部7,8、即ち、波形形状部7b,8bが矢印b方向に沿って開閉するように挙動する。しかし、各波形形状部7b,8bは、互いに反方向に向く2つの山形からなるから、それぞれの矢印a方向への変形が加算されて、図2に示す例より矢印b方向への挙動が大きく発現される。したがって、前記連結凹溝37,38に形成される前記各一対の凹部37b,38bは、該凹部37b,38bによって形成される拡幅空所37b0,38b0が、緩衝部7,8のa方向及びb方向への前記挙動を許容し得る大きさとなるように形成される。この例では、緩衝部7,8のb方向への挙動が図2に示す例より大きいから、連結部5,6にその長手方向に沿った引張力や反力が作用した場合の吸収性が良く、環状シール部2,3,4の各環状凹溝34,35,36に対する嵌め入れが、一層無理なく的確になされる。
その他の構成は図2に示す例と同様であるから、共通部分に同一の符号を付し、その説明を省略する。
FIG. 3 shows a modification of the first embodiment. This example is different from the example shown in FIG. 2 in that the buffer parts 7 and 8 are formed by waveform shape parts 7b and 8b. That is, the corrugated portions 7b and 8b are formed in two ridges in plan view, and the ridges protrude in both the width directions of the connecting portions 5 and 6 (the groove width directions of the connecting concave grooves 37 and 38). It is formed continuously. A pair of recesses 37b and 38b are formed in each groove wall at portions corresponding to the buffer portions 7 and 8 of the connecting recess grooves 37 and 38, respectively. In the case of this example, the buffer parts 7 and 8 are easily deformed in the direction indicated by the arrow a as in the above example, and this causes a tensile force or a reaction force along the longitudinal direction to act on the connecting parts 5 and 6. The buffer portions 7 and 8, that is, the waveform shape portions 7b and 8b behave so as to open and close along the arrow b direction. However, since each waveform shape part 7b, 8b consists of two chevrons which are opposite to each other, the deformation in the direction of arrow a is added, and the behavior in the direction of arrow b is greater than in the example shown in FIG. Expressed. Therefore, each of the pair of recesses 37b and 38b formed in the connecting recess grooves 37 and 38 has the widened spaces 37b0 and 38b0 formed by the recesses 37b and 38b, respectively, in the a direction and b of the buffer portions 7 and 8. It is formed to have a size that allows the behavior in the direction. In this example, since the behavior in the b direction of the buffer parts 7 and 8 is larger than the example shown in FIG. 2, the absorbability when the tensile force or reaction force along the longitudinal direction acts on the connecting parts 5 and 6. The fitting of the annular seal portions 2, 3, 4 into the respective annular concave grooves 34, 35, 36 is made more reasonably and accurately.
Since the other configuration is the same as that of the example shown in FIG. 2, the same reference numerals are given to common portions, and the description thereof is omitted.

図4は、本発明の第2の実施形態に係るガスケットを示す図2と同様図である。この実施形態のガスケット1Aも、前記と同様の3個の環状シール部2,3,4と、環状シール部2,3を連結する連結部5と、環状シール部2,4を連結する連結部6とを備えている。そして、環状シール部2,3,4及び連結部5,6は、前記と同様にオイルクーラ30に形成された環状凹溝34,35,36及び連結凹溝37,38にそれぞれ嵌め込まれる。さらに、連結部5,6の途中には、図2に示す例と同様の緩衝部7,8が形成され、前記連結凹溝37,38におけるこの緩衝部7,8に対応する部位には、凹部37a,38aによる拡幅空所37a0,38a0が形成されている。この実施形態では、前記連結凹溝37には2つの位置合せ部37c,37dが、連結凹溝38には2つの位置合せ部38c,38dが、それぞれ形成されている。そして、前記緩衝部7と前記環状シール部2,3との間の前記連結部5には、前記位置合せ部37c,37dに整合する形状の異形部9,10が形成されている。また、前記緩衝部8と前記環状シール部2,4との間の前記連結部6には、前記位置合せ部38c,38dに整合する形状の異形部11,12が形成されている。図例では、前記位置合せ部37c,37d及び前記位置合わせ部38c,38dは、連結凹溝37,38の両溝壁に形成される凹部からなり、前記異形部9,10及び前記異形部11,12は、各連結部5,6の両側部から突出する凸部からなる。この位置合わせ部と異形部との凹凸関係は、図例のものと逆であっても良く、また、連結凹溝37,38の片側溝壁及び連結部5,6の一側部に設けられるものであっても良い。 FIG. 4 is a view similar to FIG. 2 showing a gasket according to the second embodiment of the present invention. The gasket 1A of this embodiment also includes the same three annular seal portions 2, 3, 4 as described above, a connecting portion 5 that connects the annular seal portions 2, 3, and a connecting portion that connects the annular seal portions 2, 4. 6 is provided. The annular seal portions 2, 3, 4 and the connecting portions 5, 6 are respectively fitted into the annular concave grooves 34, 35, 36 and the connecting concave grooves 37, 38 formed in the oil cooler 30 as described above. Further, in the middle of the connecting portions 5 and 6, buffer portions 7 and 8 similar to the example shown in FIG. 2 are formed, and in the portions corresponding to the buffer portions 7 and 8 in the connecting concave grooves 37 and 38, Widened spaces 37a0 and 38a0 are formed by the recesses 37a and 38a. In this embodiment, two positions if I was part 37c in the connecting groove 37, 37d is, two positions if I was part 38c in connection grooves 38, 38d are formed respectively. Then, the said connecting section 5 between the buffer unit 7 and the annular seal part 2 and 3, wherein the position if I was part 37c, profiled portions 9, 10 of a shape matching the 37d is formed. Furthermore, the said connecting part 6 between the buffer section 8 and the annular seal portion 2 and 4, wherein the position if I was part 38c, irregular portions 11 and 12 of a shape matching the 38d is formed. In the illustrated example, the position if I was part 37c, 37d and the positioning portion 38c, 38d is made of a recess formed on both groove walls of the connecting groove 37 and 38, the profiled portions 9 and 10 and the profiled The portions 11 and 12 are formed of convex portions protruding from both side portions of the connecting portions 5 and 6. The concavo-convex relationship between the alignment portion and the deformed portion may be opposite to that in the illustrated example, and is provided on one side groove walls of the connection concave grooves 37 and 38 and one side portion of the connection portions 5 and 6. It may be a thing.

図4に示すガスケット1Aを、前記環状凹溝34,35,36及び連結凹溝37,38に嵌め入れて収納させる際、先ず、前記異形部9,10及び異形部11,12を、前記位置合わせ部37c,37d及び位置合わせ部38c,38dに整合させる。これによって、各環状シール部2,3,4が、各環状凹溝34,35,36のそれぞれの正規の位置に正しく収納される。このように、環状シール部2,3,4の位置を優先して決めることができるから、連結部5,6における加工公差による前記引張力や反力は、各位置合わせ部及び異形部による位置決め部間で生じることになる。したがって、位置決めによる歪は緩衝部7,8による前記挙動によって吸収することができるから、連結部5における前記接合部5a,5b、及び、連結部6における前記接合部6a,6bに内部応力が発生し難くなる。これによって、長期の使用においても、この接合部の破断を起こす懸念が少なく、各環状シール部2,3,4によるシール機能が良好に維持される。
なお、この例においても、緩衝部7,8を図3に示す波形形状部とすることはもとより可能である。その他の構成は、第1の実施形態と同様であるから、ここでも共通部分に同一の符号を付し、その説明を省略する。
When fitting the gasket 1A shown in FIG. 4 into the annular concave grooves 34, 35, 36 and the connecting concave grooves 37, 38, first, the deformed portions 9, 10 and the deformed portions 11, 12 are moved to the position. Alignment is performed with the alignment portions 37c and 37d and the alignment portions 38c and 38d. As a result, the annular seal portions 2, 3, 4 are correctly stored in the respective normal positions of the annular grooves 34, 35, 36. Thus, since the positions of the annular seal portions 2, 3 and 4 can be determined with priority, the tensile force and reaction force due to processing tolerances at the connecting portions 5 and 6 are determined by the positioning portions and the deformed portions. It will occur between the parts. Therefore, since the distortion due to positioning can be absorbed by the behavior of the buffer portions 7 and 8, internal stress is generated in the joint portions 5a and 5b in the connecting portion 5 and the joint portions 6a and 6b in the connecting portion 6. It becomes difficult to do. As a result, there is little fear of causing breakage of the joint portion even in long-term use, and the sealing function by the annular seal portions 2, 3, 4 is maintained well.
In this example as well, the buffer portions 7 and 8 can be of the waveform shape shown in FIG. Since the other configuration is the same as that of the first embodiment, the same reference numerals are given to the common parts and the description thereof is omitted here.

図5は、本発明の第3の実施形態に係るガスケットを示す図2と同様図である。この実施形態のガスケット1Bも、図4に示すガスケット1A(第2の実施形態)と同様に、連結凹溝37,38及び連結部5,6に位置合わせ部及び異形部を備えている点で、第1の実施形態のガスケット1と異なる。しかし、第2の実施形態とは、位置合わせ部及び異形部の形成位置が異なる。即ち、本実施形態のガスケット1Bにおいては、前記連結凹溝37と環状凹溝34,35との合流部に、2つの位置合せ部37e,37fが、連結凹溝38と環状凹溝34,36との合流部に、2つの位置合せ部38e,38fが、それぞれ形成されている。そして、連結部5における環状シール部2,3との接合部5a,5bには、前記位置合せ部37e,37fにそれぞれ整合する異形部13,14が、それぞれ形成されている。また、連結部6における環状シール部2,4との接合部6a,6bには、前記位置合せ部38e,38fにそれぞれ整合する異形部15,16が、それぞれ形成されている。図例では、前記位置合せ部37e,37f及び前記位置合わせ部38e,38fは、連結凹溝37,38の両溝壁に形成される凹部からなり、前記異形部13,14及び前記異形部15,16は、各連結部5,6の両側部から突出する凸部からなる。この位置合わせ部と異形部との凹凸関係は、図例のものと逆であっても良く、また、連結凹溝37,38の片側溝壁及び連結部5,6の一側部に設けられるものであっても良いことは第2の実施形態と同様である。   FIG. 5 is a view similar to FIG. 2 showing a gasket according to a third embodiment of the present invention. Similarly to the gasket 1A (second embodiment) shown in FIG. 4, the gasket 1B of this embodiment also includes an alignment portion and a deformed portion in the connecting concave grooves 37 and 38 and the connecting portions 5 and 6. This is different from the gasket 1 of the first embodiment. However, the position where the alignment portion and the deformed portion are formed is different from that of the second embodiment. That is, in the gasket 1B of the present embodiment, two alignment portions 37e and 37f are formed at the joining portion of the connecting groove 37 and the annular grooves 34 and 35, and the connecting groove 38 and the annular grooves 34 and 36 are joined. Two alignment portions 38e and 38f are respectively formed at the joining portion. In the joint portions 5a and 5b with the annular seal portions 2 and 3 in the connecting portion 5, deformed portions 13 and 14 respectively aligned with the alignment portions 37e and 37f are formed. In addition, deformed portions 15 and 16 that are aligned with the alignment portions 38e and 38f, respectively, are formed in the joint portions 6a and 6b of the connecting portion 6 with the annular seal portions 2 and 4, respectively. In the illustrated example, the alignment portions 37e and 37f and the alignment portions 38e and 38f are formed of concave portions formed in both groove walls of the connecting concave grooves 37 and 38, and the deformed portions 13 and 14 and the deformed portion 15 are formed. , 16 are convex portions projecting from both side portions of the connecting portions 5, 6. The concavo-convex relationship between the alignment portion and the deformed portion may be opposite to that in the illustrated example, and is provided on one side groove walls of the connection concave grooves 37 and 38 and one side portion of the connection portions 5 and 6. The thing which may be a thing is the same as that of 2nd Embodiment.

図5に示すガスケット1Bも、先ず、前記異形部13,14及び異形部15,16を、前記位置合わせ部37e,37f及び位置合わせ部38e,38fに整合させた上で、前記環状凹溝34,35,36及び連結凹溝37,38に対する収納がなされる。これによって、各環状シール部2,3,4が、各環状凹溝34,35,36のそれぞれの正規の位置に正しく収納される。このように、環状シール部2,3,4の位置を優先して決めることができるから、第2の実施形態と同様に、連結部5,6における加工公差による前記引張力や反力は、各位置合わせ部及び異形部による位置決め部間で生じることになる。この場合、連結部5,6と環状シール部2,3,4との接合部5a,5b,6a,6bにおいて位置合わせがなされるから、環状シール部2,3,4の位置をより優先的かつ的確に決めることができる。また、前記引張力や反力による歪のほぼ全てが緩衝部7,8で吸収されることになり、連結部5における前記接合部5a,5b、及び、連結部6における前記接合部6a,6bに内部応力がより発生し難くなる。これによって、長期の使用においても、環状シール部2,3,4の均一なシール状態が乱されることがないので、この接合部の破断を起こす懸念が少なく、各環状シール部2,3,4によるシール機能がより良好に維持される。
なお、この例においても、緩衝部7,8を図3に示す波形形状部とすることはもとより可能である。その他の構成は、第1及び第2の実施形態と同様であるから、ここでも共通部分に同一の符号を付し、その説明を省略する。
In the gasket 1B shown in FIG. 5, first, the deformed portions 13 and 14 and the deformed portions 15 and 16 are aligned with the alignment portions 37e and 37f and the alignment portions 38e and 38f, and then the annular groove 34 is formed. , 35, 36 and the connecting concave grooves 37, 38 are stored. As a result, the annular seal portions 2, 3, 4 are correctly stored in the respective normal positions of the annular grooves 34, 35, 36. Thus, since the positions of the annular seal portions 2, 3 and 4 can be determined with priority, the tensile force and reaction force due to processing tolerances in the connecting portions 5 and 6 are the same as in the second embodiment. This occurs between the positioning portions by the respective alignment portions and the deformed portions. In this case, since the alignment is performed at the joint portions 5a, 5b, 6a, 6b between the connecting portions 5, 6 and the annular seal portions 2, 3, 4, the positions of the annular seal portions 2, 3, 4 are more preferential. It can be determined accurately. In addition, almost all of the strain due to the tensile force and reaction force is absorbed by the buffer portions 7 and 8, and the joint portions 5 a and 5 b in the connecting portion 5 and the joint portions 6 a and 6 b in the connecting portion 6. Internal stress is less likely to occur. Thereby, even in long-term use, the uniform sealing state of the annular seal portions 2, 3 and 4 is not disturbed. The sealing function by 4 is better maintained.
In this example as well, the buffer portions 7 and 8 can be of the waveform shape shown in FIG. Since other configurations are the same as those of the first and second embodiments, the same reference numerals are given to the common portions, and the description thereof is omitted.

図6(a)〜(d)は、本発明のガスケットの図1に対応する断面形状の他の形態の例を示す図である。これらは、環状シール部の断面形状の種々の形態と、環状シール部と連結部との連結位置の種々の態様を示しており、前記第1〜第3実施形態のいずれにも適用されるものである。(a)図に示す例は、環状シール部2,3の断面形状が略円形状で、連結部5が環状シール部2,3に対して前記シリンダブロック20とオイルクーラ30との前記締結方向の略中間位置において連結されている。また、(b)(c)(d)図に示す例は、環状シール部2,3の断面形状が略長方形であり、その長辺が前記締結方向に向くよう形成されている。そして、(b)図に示す例では、連結部5が環状シール部2,3に対して前記シリンダブロック20とオイルクーラ30との前記締結方向の略中間位置において連結されている。また、(c)図に示す例では、前記連結部5が、環状シール部2,3に対して前記締結方向の上部位置(前記各環状凹溝34,35の底部側位置)に連結されている。さらに、(d)図に示す例では、前記連結部5が、環状シール部2,3に対して前記締結方向の下部位置(前記各環状凹溝34,35の開口部側位置)に連結されている。これらの種々の形態は、製品仕様や成型のし易さ等を勘案して適宜選択採用される。
なお、環状シール部の断面形状は、これらの例に限らず、例えば、上下又は左右非対称な形状であっても良い。環状シールの断面形状は、図に現されていないが、同様の形状が採用可能であることは言うまでもない。
FIGS. 6A to 6D are views showing examples of other forms of the cross-sectional shape corresponding to FIG. 1 of the gasket of the present invention. These show various forms of the cross-sectional shape of the annular seal portion and various aspects of the connection position between the annular seal portion and the connection portion, and are applied to any of the first to third embodiments. It is. (A) In the example shown in the figure, the cross-sectional shape of the annular seal portions 2 and 3 is substantially circular, and the connecting portion 5 is in the fastening direction of the cylinder block 20 and the oil cooler 30 with respect to the annular seal portions 2 and 3. Are connected at a substantially intermediate position. Further, in the examples shown in FIGS. (B), (c), and (d), the cross-sectional shape of the annular seal portions 2 and 3 is substantially rectangular, and the long sides thereof are formed so as to face the fastening direction. And in the example shown to (b) figure, the connection part 5 is connected with the annular seal parts 2 and 3 in the substantially intermediate position of the said fastening direction of the said cylinder block 20 and the oil cooler 30. As shown in FIG. Further, in the example shown in FIG. (C), the connecting portion 5 is connected to the upper position in the fastening direction with respect to the annular seal portions 2 and 3 (the bottom side position of the annular grooves 34 and 35). Yes. Further, in the example shown in FIG. 4 (d), the connecting portion 5 is connected to the lower position in the fastening direction with respect to the annular seal portions 2 and 3 (opening side position of the annular grooves 34 and 35). ing. These various forms are appropriately selected and adopted in consideration of product specifications, ease of molding, and the like.
In addition, the cross-sectional shape of the annular seal portion is not limited to these examples, and may be, for example, a vertically or asymmetrical shape. Although the sectional shape of the annular seal portion is not shown in the drawing, it goes without saying that a similar shape can be adopted.

図7(a)〜(e)は、図2におけるB−B線矢視部の種々の形状を示す断面図であり、前記第1〜第3の実施形態のいずれにも適用されるものである。これらの例は、各連結部の断面形状の取り得る形状の例を示している。連結部は、本発明のガスケットのシール機能に関与しない部分であるから、シール性よりも連結強度や、成型のし易さ、或いは取扱い性等を勘案してこれらの形状が適宜選択される。   FIGS. 7A to 7E are cross-sectional views showing various shapes of the BB line arrow portion in FIG. 2 and are applied to any of the first to third embodiments. is there. These examples show examples of shapes that the cross-sectional shape of each connecting portion can take. Since the connecting portion is a portion not related to the sealing function of the gasket of the present invention, these shapes are appropriately selected in consideration of the connecting strength, the ease of molding, the handleability, and the like rather than the sealing performance.

なお、前記各実施形態では、2部材として、シリンダブロック20及びオイルクーラ30を例に採って述べたが、これに限定されず、その他の複数のシール対象部位を有しているものにも適用される。この場合、シール対象部位は図例のように3個に限らず、2個あるいは4個以上のものであっても良い。また、ガスケットを構成する材料がゴム材料である例について述べたが、軟質の合成樹脂等を含む各種エラストマーであっても良い。さらに、緩衝部7,8は、図例のような屈曲形状部や、波形形状部に限らず、連結部5,6の構成材料より前記のような緩衝作用のあるものを充当させたり、形状的に緩衝性をもたらすもの等を充当させたりすることも可能である。また、凹部37a,38aの形状として、図示のような方形状に限らず台形状(対向辺部が傾斜したテーパ形状)であっても良い。また、異形部及び位置合せ部の形状は、図例のものに限定されずその他の形状ももとより可能であり、両者の凹凸形状を連結凹溝の深さ方向に沿って形成することも可能である。 In each of the above-described embodiments, the cylinder block 20 and the oil cooler 30 are taken as examples of the two members. However, the present invention is not limited to this, and the present invention is also applicable to other members having a plurality of seal target portions. Is done. In this case, the number of sites to be sealed is not limited to three as shown in the figure, but may be two or four or more. Moreover, although the example which the material which comprises a gasket is a rubber material was described, various elastomers containing a soft synthetic resin etc. may be sufficient. Furthermore, the buffer portions 7 and 8 are not limited to the bent shape portion and the waveform shape portion as shown in the figure, but may be made by applying a material having a buffer action as described above from the constituent materials of the connection portions 5 and 6. In addition, it is possible to use a material that provides buffering properties. Further, the shape of the recesses 37a and 38a is not limited to the square shape as shown in the figure, but may be a trapezoidal shape (tapered shape with opposing side portions inclined). The shape of the profile portion and the position if I was part, other shapes are not limited to the illustrated example is also possible as well, be formed along both the irregular shape in the depth direction of the connecting groove also Is possible.

1,1A,1B ガスケット
20 シリンダブロック(2部材の他方)
30 オイルクーラ(2部材の一方)
34,35,36 環状凹溝(溝)
37,38 連結凹溝(溝)
2,3,4 環状シール部
5,6 連結部
5a,5b 接合部
6a,6b 接合部
7,8 緩衝部
7a,8a 屈曲形状部
7b,8b 波形形状部
9〜16 異形部
37c〜37f 位置合わせ部
38c〜38f 位置合わせ部
37e,37f 位置合わせ部
38e,38f 位置合わせ部
1, 1A, 1B Gasket 20 Cylinder block (the other of the two members)
30 Oil cooler (one of two members)
34, 35, 36 Annular grooves (grooves)
37,38 Connecting groove (groove)
2, 3, 4 Annular seal portion 5, 6 Connecting portion 5a, 5b Joint portion 6a, 6b Joint portion 7, 8 Buffer portion 7a, 8a Bent shape portion 7b, 8b Waveform shape portion 9-16 Deformed portion 37c-37f Positioning 38c to 38f Positioning part 37e, 37f Positioning part 38e, 38f Positioning part

Claims (5)

2部材の一方の部材に形成された溝に収納された状態で当該2部材間に介装されて、該2部材間の密封を行うガスケットにおいて、
複数のシール対象部位毎に適用される複数の環状シール部と、当該環状シール部同士を連結する連結部とを含み、
前記環状シール部と連結部とは弾性材料による一体成型体からなり、
前記溝は、前記複数の環状シール部をそれぞれ収納する環状凹溝と、当該環状凹溝間に通じ前記連結部を収納する連結凹溝とを有し、
前記連結部には、該連結部によって互いに連結された環状シール部の相対位置を調整し得る緩衝部が設けられ、一方、前記連結凹溝には、前記緩衝部に対応する位置に当該緩衝部の変形挙動を許容し得る拡幅空所が形成されていることを特徴とするガスケット。
In a gasket that is interposed between the two members in a state of being housed in a groove formed in one member of the two members and seals between the two members,
Including a plurality of annular seal portions applied to each of a plurality of seal target portions, and a connecting portion for connecting the annular seal portions to each other;
The annular seal portion and the connecting portion are formed of an integrally molded body made of an elastic material,
The groove includes an annular groove that accommodates the plurality of annular seal portions, and a connecting groove that passes between the annular grooves and accommodates the connecting portion.
The coupling portion is provided with a buffer portion that can adjust the relative position of the annular seal portions that are coupled to each other by the coupling portion , while the buffer groove has a position corresponding to the buffer portion in the coupling groove. A gasket having a widened space capable of allowing the deformation behavior of the gasket.
請求項1に記載のガスケットにおいて、
前記緩衝部は、屈曲形状部からなることを特徴とするガスケット。
The gasket according to claim 1,
The gasket is characterized in that the buffer portion comprises a bent portion.
請求項1に記載のガスケットにおいて、
前記緩衝部は、波形形状部からなることを特徴とするガスケット。
The gasket according to claim 1,
The gasket is characterized in that the buffer portion comprises a wave shape portion.
請求項1〜3のいずれか1項に記載のガスケットにおいて、
前記溝には位置合せ部が形成され、前記緩衝部と前記環状シール部との間の前記連結部に、前記位置合せ部に整合する形状の異形部を備えていることを特徴とするガスケット。
In the gasket according to any one of claims 1 to 3,
An alignment portion is formed in the groove, and the connecting portion between the buffer portion and the annular seal portion is provided with a deformed portion having a shape matching the alignment portion.
請求項1〜3のいずれか1項に記載のガスケットにおいて、
前記溝には位置合せ部が形成され、前記連結部における前記環状シール部との接合部に、前記位置合せ部に整合する形状の異形部を備えていることを特徴とするガスケット。
In the gasket according to any one of claims 1 to 3,
The gasket is characterized in that an alignment portion is formed in the groove, and a deformed portion having a shape matching the alignment portion is provided at a joint portion of the connecting portion with the annular seal portion.
JP2012117133A 2012-05-23 2012-05-23 gasket Active JP6037543B2 (en)

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CN107542930A (en) * 2016-06-29 2018-01-05 博西华电器(江苏)有限公司 Household electrical appliance and its sealing structure
US11668395B2 (en) 2019-10-30 2023-06-06 Federal-Mogul Motorparts Llc Gasket including channel-retention features
JP2021173331A (en) * 2020-04-24 2021-11-01 Nok株式会社 Gasket and sealing structure
WO2024166978A1 (en) * 2023-02-09 2024-08-15 Nok株式会社 Gasket and sealing structure
CH720554A1 (en) * 2023-02-27 2024-09-13 Daetwyler Schweiz Ag seal with tolerance compensation zone

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JPH0124453Y2 (en) * 1985-07-01 1989-07-25
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JPS63183514U (en) * 1987-05-20 1988-11-25
JPH02286859A (en) * 1989-04-28 1990-11-27 Nippon Reinz Co Ltd Cylinder head gasket
DE4241759C1 (en) * 1992-12-11 1994-02-17 Freudenberg Carl Fa Gasket for gas-tight attachment of an intake manifold to the cylinder head of an internal combustion engine
JPH08218865A (en) * 1995-02-08 1996-08-27 Yanmar Diesel Engine Co Ltd Exhaust manifold for engine
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