JP2011002068A

JP2011002068A - Rubber seal with fitting

Info

Publication number: JP2011002068A
Application number: JP2009147237A
Authority: JP
Inventors: Taiji Uesugi; 泰司上杉
Original assignee: Mitsubishi Cable Industries Ltd
Current assignee: Mitsubishi Cable Industries Ltd
Priority date: 2009-06-22
Filing date: 2009-06-22
Publication date: 2011-01-06
Anticipated expiration: 2029-06-22
Also published as: JP5563248B2

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive seal with a fitting, having excellent sealability and preventing damage to a bolt caused by a sudden increase in bolt clamping force.SOLUTION: This rubber seal with the fitting includes: a rubber seal portion 10 provided with elastically deformable sealing projecting portions 3, 4 brought into contact with contact flat surface portions 2, 2; and the fitting 20 integrated with the rubber seal portion 10. The fitting 20 is torsionally elastically deformable.

Description

本発明は、金具付きゴムシールに関する。 The present invention relates to a rubber seal with a metal fitting.

従来から、ガスケットやファスナーシールとしては、図11や図12に示すような横断面形状のものが公知である。
即ち、図11は全体が環状の金具31の幅方向中間の凹溝32，32に、山型の横断面形状の密封用突隆ゴム部33，33を一体固着したガスケットを例示する。
一対の平行な接触平坦面部34，34を矢印35方向から接近させてゆけば、突隆ゴム部33の頂部が接触して圧縮変形して、凹溝32内へ弾性変形する。金具31は板状であって、平坦面部34，34と平行方向に介在させるが、その横断面形状は、内径側の第１矩形41と外径側の第２矩形42と、薄肉一文字連結片部43とから成り、このような横断面形状に機械加工する上で、加工工数と手間が増えて、コスト高となるという問題があった。 Conventionally, gaskets and fastener seals having a cross-sectional shape as shown in FIGS. 11 and 12 are known.
That is, FIG. 11 exemplifies a gasket in which the ridge rubber portions 33 and 33 for sealing having a mountain-shaped cross-sectional shape are integrally fixed in the concave grooves 32 and 32 in the middle in the width direction of the overall metal fitting 31.
When the pair of parallel flat contact surface portions 34 and 34 are moved closer to each other in the direction of the arrow 35, the top portions of the protruding rubber portions 33 come into contact with each other and are compressed and deformed into the concave grooves 32. The metal fitting 31 is plate-shaped and is interposed in a direction parallel to the flat surface portions 34, 34. The cross-sectional shape of the metal fitting 31 is a first rectangle 41 on the inner diameter side, a second rectangle 42 on the outer diameter side, and a thin one-character connection piece. There is a problem that the machining man-hours and labor are increased and the cost is increased when machining into such a cross-sectional shape.

また、図12にはファスナーシールを例示し、外径側の横断面板状の矩形部44と、その内径方向へ突出状に連設される一文字突出片部45とから成る全体環状金具31と、この一文字突出片部45に被覆した横断面楕円形のゴムシール部46と、から成る。この図12に示すような金具31を機械加工する場合も、複雑な形状のため、加工工数と手間が増えてコスト的にも高くついていた。図12の場合も、接触平坦面部34，34が矢印35，35のように接近して、ゴムシール部46を圧縮するように押圧して、密封状態を保つ。 Further, FIG. 12 illustrates a fastener seal, an overall annular metal fitting 31 composed of a rectangular section 44 having a cross-sectional plate shape on the outer diameter side, and a one-character protruding piece section 45 continuously projecting in the inner diameter direction, And a rubber seal portion 46 having an elliptical cross section covering the one-character protruding piece 45. Even when the metal fitting 31 as shown in FIG. 12 is machined, since it has a complicated shape, the number of processing steps and labor are increased, and the cost is high. In the case of FIG. 12 as well, the contact flat surface portions 34, 34 approach as indicated by arrows 35, 35 and press the rubber seal portion 46 so as to compress it, thereby maintaining the sealed state.

また、従来例の上記図11と図12の場合、板状の第１・第２矩形41，42又は矩形部44が、接触平坦面部34，34がメタルタッチするまで（図外の）ボルトを締付けて、突隆ゴム部33又はゴムシール部46をもって密封作用を行わせる構成であるので、金具31の厚さ以下には、ボルトの締付けは不可能であり、ボルトの締付力に対し、ゴム部33・ゴムシール部46のつぶし反力は比較的小さく、長期使用でボルトが緩む虞があり、あるいは、ボルトが緩まないまでも、長期使用で、ゴム部33・ゴムシール部46がへたったりした際に、応急的に圧縮させるなどの増締めも不可能である。 In the case of FIGS. 11 and 12 of the conventional example, the plate-like first and second rectangles 41 and 42 or the rectangular portion 44 is not tightened until the contact flat surface portions 34 and 34 are metal touched (not shown). Since the structure is such that the projecting rubber part 33 or the rubber seal part 46 performs the sealing action, the bolt cannot be tightened below the thickness of the metal fitting 31, and the rubber cannot be tightened against the bolt tightening force. The crushing reaction force of part 33 / rubber seal part 46 is relatively small, and there is a risk that the bolt will loosen after long-term use, or even if the bolt does not loosen, the rubber part 33 / rubber seal part 46 will sag after long-term use. In such a case, it is impossible to perform tightening such as emergency compression.

図10は、横軸にシール（ガスケット）の圧縮量（締付量）Ｘをとり、縦軸に締付力Ｙをとって示したグラフ図であって、従来例の図11，図12の場合を点線40をもって示す。この点線40からも明らかなように、所定圧縮量（締付量）Ｘ₀ に達するまでは、ゴム部33又はゴムシール部46がしだいに弾性的に圧縮されて、しだいに締付力が緩やかに増加するが、所定圧縮量Ｘ₀ に於て、上記メタルタッチを生ずるや否や、急激に、垂直状点線40Ａにて示す如く、締付力が増加し、（図外の）ボルトではそれ以上の締付けができないことを示している。 FIG. 10 is a graph showing the compression amount (tightening amount) X of the seal (gasket) on the horizontal axis and the tightening force Y on the vertical axis. The case is indicated by the dotted line 40. As is clear from the dotted line 40, until it reaches a predetermined compression amount (amount fastening) X _0, rubber 33 or the rubber seal portion 46 is gradually elastically compressed, gradually tightening force is gradually However, as soon as the metal touch occurs at a predetermined compression amount X ₀ , the tightening force suddenly increases as shown by the vertical dotted line 40A, and the bolt (not shown) exceeds that. Indicates that tightening is not possible.

また、従来例（図11，図12）では、圧力を受けて、フランジ構造面に相当する、一方の平坦面部34が微小寸法浮上り―――いわゆる“面開き”―――を生ずることもあるが、その際には、メタルタッチしていた矩形41，42・矩形部44と一方の平坦面部34との間の微小間隙に、突隆ゴム部33・ゴムシール部46が流体圧力を受けてはみ出すという問題（ゴムの破損問題）もあった。 In addition, in the conventional example (FIGS. 11 and 12), one flat surface portion 34 corresponding to the flange structure surface receives a pressure, and a small dimensional lift--so-called “face opening”-may occur. However, in that case, the bump rubber part 33 and the rubber seal part 46 are subjected to fluid pressure in the minute gap between the rectangle 41, 42 and the rectangular part 44 and the one flat surface part 34 which have been metal touched. There was also a problem of protrusion (rubber damage problem).

他に、捩れ弾性変形自在な金属シールに圧潰可能な極めて薄い樹脂コーティング層を被覆したシール材を、本出願人はかつて提案している（特許文献１参照）。 In addition, the present applicant has proposed a sealing material in which a very thin resin coating layer that can be crushed is applied to a torsionally elastically deformable metal seal (see Patent Document 1).

特開２００４−２２５８３２号公報JP 2004-225832 A

ところが、極めて薄い樹脂コーティング層にて、捩れ弾性変形自在な金属シールの表面を被覆した上記特許文献１に係るものは、接触平坦面が、（高精度に平面状でなくって、）長手方向に波打っていたり、凹凸があったりすると、急に密封性が低下するという問題がある。また、密封流体の種類によっては、十分なシール性能を発揮できない。 However, in the case of the above-mentioned Patent Document 1 in which the surface of the metal seal that can be torsionally elastically deformed is covered with an extremely thin resin coating layer, the contact flat surface is not in a planar shape with high accuracy. If there is undulation or irregularities, there is a problem that the sealing performance is suddenly lowered. Further, depending on the type of the sealing fluid, sufficient sealing performance cannot be exhibited.

そこで、本発明は、相互に平行な一対の接触平坦面部の間に介装される全体が環状の金具付きゴムシールであって；上記一対の接触平坦面部に接触して相互接近に伴って弾性圧縮変形する密封用突隆部を有するゴムシール部と；上記ゴムシール部に一体化されると共に上記一対の接触平坦面部の一層の相互接近に伴って捩れ弾性変形を生じ該捩れ弾性変形の弾性復元力によって上記一対の接触平坦面部の所定値以上の相互接近を阻止する金具と；から成る。
また、全体が環状のゴムシール部に内圧又は外圧が作用した際に上記ゴムシール部のラジアル外方又はラジアル内方へのはみ出しを、上記金具が上記弾性復元力によって上記一対の接触平坦面部に対して接近乃至接触して、防止するように構成した。
また、上記金具は、横断面に於て、上記一対の接触平坦面部に対して、10°〜80°の傾斜角度をもって傾斜状に、ゴムシール部に一部乃至全体が埋設状として設けられている。
また、上記金具は、横断面形状が弯曲Ｓ字状又は弯曲Ｚ字状である。または、上記金具は、横断面形状が折曲Ｓ字状又は折曲Ｚ字状であって、金具中央片部の上記一対の接触平坦面部に対する傾斜角度θを、10°〜80°に設定したものである。
また、上記金具は、ゴムシール部に一部乃至全体が埋設状に設けられると共に埋設部位に小貫孔を形成して、分断されたゴムシール部のゴム部材が該小貫孔に侵入して連結ゴム部を形成するよう構成した。 Accordingly, the present invention provides a rubber seal with a metal fitting, which is interposed between a pair of contact flat surface portions parallel to each other; and is elastically compressed as it comes into contact with the pair of contact flat surface portions. A rubber seal portion having a deforming sealing ridge; and being integrated with the rubber seal portion and undergoing torsional elastic deformation as one pair of the contact flat surface portions come closer to each other, by elastic restoring force of the torsional elastic deformation A metal fitting for preventing the pair of contact flat surface portions from approaching each other by a predetermined value or more.
Further, when an internal pressure or an external pressure is applied to the annular rubber seal portion as a whole, the rubber seal portion protrudes radially outward or radially inward, and the metal fittings against the pair of flat contact surface portions by the elastic restoring force. It was configured to prevent it from approaching or touching.
Further, the metal fitting is provided in an inclined shape with an inclination angle of 10 ° to 80 ° with respect to the pair of flat contact surface portions in a cross section, and a part or the whole of the rubber seal portion is embedded. .
The metal fitting has a curved S-shape or a curved Z-shape. Alternatively, the metal fitting has a cross-sectional shape that is a bent S-shape or a bent Z-shape, and an inclination angle θ with respect to the pair of flat contact surface portions of the central piece of the metal fitting is set to 10 ° to 80 °. Is.
The metal fitting is partly or entirely embedded in the rubber seal portion and has a small through-hole formed in the embedded portion, and the rubber member of the divided rubber seal portion enters the small through-hole to connect the connecting rubber portion. Configured to form.

本発明の金具付きゴムシールによれば、従来の上記問題を解決して、安価かつ容易に製造可能となると共に、ガスケットとしてフランジ等をボルトにて締付ける場合、ボルト締付力の急激な増加を緩和して、ボルト破断等の問題がなくなり、さらに、長期使用後にゴムシール部の弾発力が低下した際に、ボルトの増締めを行ってシール性能を復元させることも可能となる。また、金具が弾性変形するため金具の初期厚以下に締付可能であり、締付け代（許容巾）が大きい。さらに、金具の弾性変形に伴いゴムシール部も弾性圧縮変形し締付力を増加可能である。また、金具の弾性復元力によりボルトが緩みにくくなるため、その点も加味すると、長期にわたり安定したシール性を有するといえる。また、いわゆる“面開き”を生じて、一対の接触平坦面の間隔寸法が微小寸法増大した際には、金具が弾性的に復元（追随）することで、金具と接触平坦面との間に間隙を生じにくく、ゴムシール部のゴムが、受圧状態で、はみ出すことを防止できる。 According to the rubber seal with metal fittings of the present invention, the above-mentioned conventional problems can be solved and manufacturing can be performed easily and inexpensively, and when a flange is tightened with a bolt as a gasket, a rapid increase in bolt tightening force is mitigated. Thus, there is no problem such as bolt breakage, and further, when the elastic force of the rubber seal portion decreases after long-term use, the bolt can be tightened to restore the sealing performance. In addition, since the metal fittings are elastically deformed, they can be tightened to less than the initial thickness of the metal fittings, and the tightening allowance (allowable width) is large. Further, the rubber seal portion is also elastically compressed and deformed with the elastic deformation of the metal fitting, and the tightening force can be increased. In addition, since the bolts are less likely to loosen due to the elastic restoring force of the metal fittings, it can be said that when this point is taken into account, the sealing performance is stable over a long period. In addition, when a so-called “face opening” occurs and the distance between the pair of contact flat surfaces increases minutely, the metal fittings elastically recover (follow), so that there is a gap between the metal fittings and the contact flat surfaces. It is difficult to generate a gap, and the rubber in the rubber seal portion can be prevented from protruding in a pressure receiving state.

このように、本発明では、金具の捩れ弾性変形に伴う弾性付勢力（復元力）、及び、ゴムシール部の弾性復元力とを、巧妙に結合した構成であり、接触平坦面が長手方向に波打っていたり凹凸があっても、常時、優れたシール性能（密封性）を発揮できるシールである。 As described above, in the present invention, the elastic biasing force (restoring force) accompanying the torsional elastic deformation of the metal fitting and the elastic restoring force of the rubber seal portion are skillfully coupled, and the contact flat surface is waved in the longitudinal direction. It is a seal that can always exhibit excellent sealing performance (sealing performance) even if it is hit or uneven.

本発明の第１の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows the 1st Embodiment of this invention. 圧縮状態を示す断面説明図である。It is sectional explanatory drawing which shows a compression state. 第２・第３の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 2nd, 3rd embodiment. 第３の実施の形態の圧縮状態の断面説明図である。It is a section explanatory view of the compression state of a 3rd embodiment. 第４の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 4th Embodiment. 第５の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 5th Embodiment. 第６の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 6th Embodiment. 第７の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 7th Embodiment. 第８の実施の形態を示す要部断面図である。It is principal part sectional drawing which shows 8th Embodiment. 本発明及び従来例の特性を示すグラフ図である。It is a graph which shows the characteristic of this invention and a prior art example. 第１の従来例を示す要部断面図である。It is principal part sectional drawing which shows a 1st prior art example. 第２の従来例を示す要部断面図である。It is principal part sectional drawing which shows a 2nd prior art example.

以下、図示の実施の形態に基づき本発明を詳説する。
図１と図２に於て第１の実施の形態を示し、図１は自由状態であり、図２は使用状態（圧縮状態）を示す。
10はゴムシール部であり、20は金具であって、モールド成形（射出モールド成形又はコンプレッションモールド成形）によって、ゴムシール部10が成形されて、金具20は埋込状として一体構造として成る。このモールド成形の際に、金具20に接着剤を付着させる場合と、付着させない場合とがある。 Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
1 and 2 show a first embodiment, FIG. 1 shows a free state, and FIG. 2 shows a use state (compressed state).
Reference numeral 10 denotes a rubber seal portion, and 20 denotes a metal fitting. The rubber seal portion 10 is formed by molding (injection molding or compression molding), and the metal fitting 20 has an embedded structure as an integral structure. During molding, there are cases where an adhesive is attached to the metal fitting 20 and where it is not attached.

本発明に係る金具付きゴムシールＳは、相互に平行な一対の接触平坦面部２，２の間に介装され、全体が環状であり、ガスケットやファスナーシール等として使用される静止平面シールである。
ゴムシール部10は、内径側端縁に密封用突隆部３，３を有し、かつ、外径側端縁に密封用突隆部４，４を有し、図１の横断面図では、中間壁部５と、その内径端・外径端の円形膨出部６，７を有する。この円形膨出部６，７の直径寸法Ｄは、帯板状中間壁部５の厚さ寸法Ｔ₅ よりも大きく、前記密封用突隆部３，３，４，４は、円形膨出部６，７の一部分をもって構成される。 The rubber seal S with a metal fitting according to the present invention is a stationary flat seal that is interposed between a pair of contact flat surface portions 2 and 2 parallel to each other and is annular as a whole and used as a gasket, a fastener seal or the like.
The rubber seal portion 10 has sealing protrusions 3 and 3 on the inner diameter side edge, and has sealing protrusions 4 and 4 on the outer diameter side edge. In the cross-sectional view of FIG. It has an intermediate wall portion 5 and circular bulging portions 6 and 7 at its inner diameter end and outer diameter end. The diameter dimension D of the circular bulging portions 6 and 7 is larger than the thickness dimension T ₅ of the belt-like intermediate wall portion 5, and the sealing protrusions 3, 3, 4 and 4 are 6 and 7 are included.

金具20は、上記ゴムシール部10の中間壁部５に斜めに埋込状に設けられた帯板形状である。しかも、ゴムシール部10の中間壁部５の上面５ａ・下面５ｂと同一（連続）平面を成すように、金具20の上端辺21・下端辺22は斜めに形成され、横断面形状は細長状平行四辺形である。
このように、金具20は、ゴムシール部10の中間壁部５に、上端辺21・下端辺22を除いて、全体に埋込状に、かつ、傾斜状として設けられている。 The metal fitting 20 is in the shape of a strip provided obliquely embedded in the intermediate wall portion 5 of the rubber seal portion 10. Moreover, the upper end side 21 and the lower end side 22 of the metal fitting 20 are formed obliquely so as to form the same (continuous) plane as the upper surface 5a and the lower surface 5b of the intermediate wall portion 5 of the rubber seal portion 10, and the cross-sectional shape is an elongated parallel shape. It is a quadrilateral.
As described above, the metal fitting 20 is provided on the intermediate wall portion 5 of the rubber seal portion 10 so as to be embedded and inclined as a whole except for the upper end side 21 and the lower end side 22.

しかも、細長状平行四辺形横断面を有する帯板状金具20に於て、ゴムシール部10に埋込まれた埋設部位23に、環状の長手方向に所定ピッチをもって（図１中に破線にて示す）小貫孔８を複数個貫設して、分断されたゴムシール部10のゴム部材が、この小貫孔８に前記モールド成形時に侵入して、短柱状の連結ゴム部９を形成する。
つまり、図１に於て、左右点対称の左半部（外径側半部）と右半部（内径側半部）とは、複数個の連結ゴム部９にて一体に連結されて、強度上の配慮が払われている。
さらに、金具20は、図１に示した横断面に於て、一対の接触平坦面部２，２に対して、10°〜80°の傾斜角度θをもって傾斜状に設けられる。 Moreover, in the band-like metal fitting 20 having an elongated parallelogram cross section, the embedded portion 23 embedded in the rubber seal portion 10 has a predetermined pitch in the annular longitudinal direction (shown by a broken line in FIG. 1). ) A plurality of small through holes 8 are penetrated, and the rubber member of the divided rubber seal portion 10 enters the small through holes 8 at the time of molding to form short columnar connecting rubber portions 9.
That is, in FIG. 1, the left half (outer diameter side half) and the right half (inner diameter side half) that are symmetrical with respect to the left and right points are integrally connected by a plurality of connecting rubber portions 9, Strength considerations have been paid.
Further, the metal fitting 20 is provided in an inclined shape with an inclination angle θ of 10 ° to 80 ° with respect to the pair of contact flat surface portions 2 and 2 in the cross section shown in FIG.

図１の自由状態から図２の圧縮使用状態に移ってゆくと、まず、円形膨出部６，７（突隆部３，３，４，４）が、相互接近する平坦面部２，２によって弾性的に圧縮変形し、図１の実線、及び、図２中の２点鎖線にて示した突隆部３，３，４，４が平坦面状となり、図２中のグラフのように、突隆部３，４は面圧Ｐ₃ ，Ｐ₄ の分布を示す。
そして、突隆部３，４が圧縮弾性変形によって平坦面状として、中間壁部５と連続平面状となると同時に、金具20の上端辺21と下端辺22が、平坦面部２，２に当接（メタルタッチ）する。一対の該平坦面部２，２の一層の相互接近に伴って、ゴムシール部10は容易に圧縮弾性変形を生ずるのに対して、金具20に関しては、矢印Ｆ₂₁，Ｆ₂₂にて示す大きな押圧力（締付力）が金具20の上端辺21・下端辺22に作用し、矢印Ｍと反対方向に捩れ弾性変形を生ずる。金具20が平坦面部２，２の一層の相互接近に伴って、上記捩れ弾性変形を生じることで、図２中に矢印Ｍにて示す復元モーメント（弾性復元力）が発生し、この復元モーメントＭ―――弾性復元力―――によって、一対の平坦面部２，２が所定間隔値未満に相互接近することを、阻止する。 When moving from the free state of FIG. 1 to the compressed use state of FIG. 2, first, the circular bulging portions 6, 7 (protruding portions 3, 3, 4, 4) are caused by the flat surface portions 2, 2 approaching each other. Elastically compressively deformed, and the ridges 3, 3, 4 and 4 shown by the solid line in FIG. 1 and the two-dot chain line in FIG. 2 have a flat surface shape, as in the graph in FIG. The ridges ₃ and ₄ show the distribution of the surface pressures P ₃ and P ₄ .
Then, the protrusions 3 and 4 are flattened by compressive elastic deformation to form a continuous flat shape with the intermediate wall 5, and at the same time the upper end side 21 and the lower end side 22 of the metal fitting 20 are in contact with the flat surface portions 2 and 2. (Metal touch). As the pair of flat surface portions 2 and 2 come closer to each other, the rubber seal portion 10 is easily compressed and elastically deformed. On the other hand, the metal 20 has a large pressing force indicated by arrows F ₂₁ and F ₂₂ . (Tightening force) acts on the upper end side 21 and the lower end side 22 of the metal fitting 20 and twists and elastically deforms in the direction opposite to the arrow M. When the metal fitting 20 undergoes the torsional elastic deformation as the flat surface portions 2 and 2 further approach each other, a restoring moment (elastic restoring force) indicated by an arrow M in FIG. ――― Elastic restoring force ――― prevents the pair of flat surface portions 2 and 2 from approaching each other below a predetermined interval value.

その後、図２に矢印Ｐ₀ にて示すような流体圧（同図では内圧の場合を例示した）が作用した際に、金具20の矢印Ｍにて示した弾性復元力（復元モーメント）によって、上端辺21と下端辺22が平坦面部２，２に対して接近乃至接触することで、ゴムシール部10のラジアル外方（矢印Ｎ₁₀参照）へのはみ出しを、防止する。このように、金具20は、いわば隙間の自封作用をなしている。 Thereafter, when a fluid pressure as shown by an arrow P _{0 in} FIG. 2 (in FIG. 2 exemplifies the case of internal pressure), the elastic restoring force (restoring moment) indicated by the arrow M of the metal fitting 20 by upper edges 21 and lower edges 22 approaches or contacts the flat surface section 2,2, the protrusion in the radial outward of the rubber seal portion 10 (see arrow N _10), it is prevented. In this manner, the metal fitting 20 has a self-sealing action of the gap.

なお、全体が環状のゴムシール部10に、（図示省略するが）外圧が作用した際も、金具20よりも外径側のゴムシール部半体がラジアル内方へ流れて、金具20と平坦面部２，２との間隙から、はみ出さんとするのを、同様に、金具20の強力な弾性復元力によって、防止する。 Even when an external pressure is applied to the annular rubber seal portion 10 as a whole (not shown), the rubber seal half on the outer diameter side of the metal fitting 20 flows radially inward, and the metal fitting 20 and the flat surface portion 2 , 2 is prevented by the strong elastic restoring force of the metal fitting 20 in the same manner.

上記平坦面部２，２を有する相手部材12，12の内の一方又は両方は、例えば、ボルト締めのフランジである場合に、本発明に係る金具付きシールは好適であり、溝加工無しで使用できる。そして、締付ボルトには弾性復元力が作用するので、ボルト緩み止め効果をも期待できる。
なお、金具20としてはバネ用ステンレス鋼等の適度の剛性と高弾発性を有する金属が望ましい。また、上述の小貫孔８を有することによって、ゴムモールド成形の際に、接着剤無しでの成形も可能である。なお、小貫孔８を省略することも可能で、加硫接着成形にて実現可能である。なお、（図示省略したが）薄いゴム膜が、上端辺21・下端辺22に被覆形成していても、自由である。また、ゴムシール部10のゴムの材質は、その選定は自由である。また、突隆部３，４の形状としては、円弧山型状以外に、２山型や３山型としたり、角山型とする等、その横断面形状は設計変更可能である。要は、両突隆部３，３及び両突隆部４，４間の厚さ寸法Ｄが、金具20の厚さ寸法Ｔ₂₀よりも大きく設定されて、各突隆部３，４が上下に突出して、相互に接近する平坦面部２，２に対して、金具20よりも先に、まず、突隆部３，４が接触すれば十分である。 When one or both of the mating members 12 and 12 having the flat surface portions 2 and 2 are, for example, bolt-tightened flanges, the metal-equipped seal according to the present invention is suitable and can be used without groove processing. . Since the elastic restoring force acts on the tightening bolt, a bolt loosening prevention effect can be expected.
The metal fitting 20 is preferably a metal having moderate rigidity and high elasticity such as spring stainless steel. Further, by having the small through-holes 8 described above, it is possible to perform molding without an adhesive during rubber molding. The small through-hole 8 can be omitted and can be realized by vulcanization adhesion molding. It should be noted that a thin rubber film (not shown) can be freely formed even if the upper edge 21 and the lower edge 22 are covered. The rubber material of the rubber seal portion 10 can be selected freely. In addition to the circular arc shape, the shape of the ridges 3 and 4 can be changed in design such as a double mountain shape, a triple mountain shape, or a square mountain shape. In short, the thickness dimension D between the protruding ridges 3 and 3 and the protruding ridges 4 and 4 is set to be larger than the thickness dimension T ₂₀ of the metal fitting 20, and the protruding ridges 3 and 4 are vertically moved. It is sufficient that the ridges 3 and 4 first come into contact with the flat surface portions 2 and 2 that protrude toward each other and approach each other before the metal fitting 20.

図10は、横軸にシールの圧縮量（締付量）Ｘをとり、縦軸に締付力Ｙをとって、両者の関係を示したグラフ図であり、所定圧縮量（締付量）Ｘ₀ の点Ｊまでは、ゴムシール部10の突隆部３，４がしだいに弾性的に圧縮されてゆくゴム圧縮領域Ｇである。このゴム圧縮領域Ｇでは、緩やかに締付力Ｙが増加してゆく。
ところが、所定圧縮量Ｘ₀ に於て、金具20が平坦面部２，２に接触（メタルタッチ）すると、図２で述べたように、捩り弾性変形を開始して、急な勾配をもって、締付力Ｙが増加し、図10に例示の点Ｋにて、締付作業を完了する。
このように、前記点Ｊから点Ｋ（を越えるところ）までが、金具弾性変形領域Ｈである。従来例の破線40Ａが横軸Ｘに対して垂直状に立ち上っていたのに比較して、本発明のシールは、比較的傾斜した実線にて示される。従って、締付け過ぎによるボルトの破損が防止できる。あるいは、ボルトの緩み止めも期待できる。 FIG. 10 is a graph showing the relationship between the compression amount (tightening amount) X of the seal on the horizontal axis and the tightening force Y on the vertical axis. The predetermined compression amount (tightening amount) Up to a point J of X ₀ is a rubber compression region G in which the protruding portions 3 and 4 of the rubber seal portion 10 are gradually elastically compressed. In the rubber compression region G, the tightening force Y gradually increases.
However, when the metal fitting 20 comes into contact with the flat surface portions 2 and 2 (metal touch) at a predetermined compression amount X ₀ , as described with reference to FIG. 2, the torsional elastic deformation is started and tightened with a steep gradient. The force Y increases, and the tightening operation is completed at the point K illustrated in FIG.
Thus, the metal fitting elastic deformation region H is from the point J to the point K (where it exceeds). Compared to the conventional broken line 40A rising perpendicular to the horizontal axis X, the seal of the present invention is shown by a relatively slanted solid line. Accordingly, it is possible to prevent the bolt from being damaged due to excessive tightening. Alternatively, it can be expected to prevent the bolts from loosening.

次に、図３（Ａ）は第２の実施の形態を示す要部断面図であって、図１，図２に示した外径側の円形膨出部７を省略（除去）した形状である。内径側の円形膨出部６に内圧が作用する密封構造用として使用されるシールであり、図１，図２とは外径側膨出部７が無いという構成以外は、同様の構成である。
また、図３（Ｂ）は第３の実施の形態を示す要部断面図であって、図１，図２に示した金具20の外径側傾斜端面20ａから、外径側のゴム部を省略（除去）した形状であり、それ以外の構成は、図１，図２と同様であるので説明を省略するが、この第３の実施の形態も内径側の円形膨出部６に内圧Ｐ₀ が図４のように作用する密封構造用に使用される。 Next, FIG. 3A is a cross-sectional view of the main part showing the second embodiment, in which the circular bulge 7 on the outer diameter side shown in FIGS. 1 and 2 is omitted (removed). is there. This is a seal used for a sealing structure in which an internal pressure acts on the circular bulging portion 6 on the inner diameter side, and is the same configuration as that shown in FIGS. 1 and 2 except that there is no outer bulging portion 7. .
FIG. 3B is a cross-sectional view of the main part showing the third embodiment, and the outer-diameter-side rubber portion is removed from the outer-diameter inclined end face 20a of the metal fitting 20 shown in FIGS. Since the configuration is omitted (removed) and the other configurations are the same as those in FIGS. 1 and 2, the description thereof will be omitted. In the third embodiment, the internal pressure P is applied to the circular bulging portion 6 on the inner diameter side. ₀ is used for a sealing structure that acts as in FIG.

なお、図３（Ｂ）は図３（Ａ）の三角形ゴム部13を除去（省略）した形状ということもできる。そして、図３（Ａ）と図３（Ｂ）の断面形状を、外圧用とすることも可能であって、その場合は、図１，図２の内径側の円形膨出部６を省略（除去）して、外形側の円形膨出部７を残せば良い。また、図３（Ｂ）では、図１，図３（Ａ）の小貫孔８を省略した場合を例示する。 Note that FIG. 3B can also be referred to as a shape in which the triangular rubber portion 13 of FIG. 3A is removed (omitted). 3A and 3B can be used for external pressure, and in that case, the circular bulging portion 6 on the inner diameter side of FIGS. 1 and 2 is omitted ( And the circular bulging portion 7 on the outer shape side may be left. FIG. 3B illustrates a case where the small through holes 8 of FIGS. 1 and 3A are omitted.

図４は、第３の実施の形態の使用（圧縮）状態を示した説明図である。この図４から明らかなように、円形膨出部６（２点鎖線参照）は相互に接近する平坦面部２，２によって弾性的に（実線の如く）圧縮変形し、突隆部３，３が平坦面部２，２に密接して、グラフ図のような面圧Ｐ₃ の分布を示す。 FIG. 4 is an explanatory diagram showing a use (compression) state of the third embodiment. As is apparent from FIG. 4, the circular bulging portion 6 (see the two-dot chain line) is elastically compressed and deformed (as indicated by the solid line) by the flat surface portions 2 and 2 approaching each other, and the protruding portions 3 and 3 are formed. closely to the flat surface section 2,2, the distribution of surface pressure P ₃ as graph.

平板状の壁部５と圧縮変形した突隆部３とは連続平面状となり、しかも、金具20の上端辺21と下端辺22が平坦面部２，２に当接（メタルタッチ）する。一対の平坦面部２，２がさらに相互接近するに伴って、金具20は矢印Ｆ₂₁，Ｆ₂₂にて示した大きな押圧力（締付力）にて示した外力を平坦面部２，２から受けることとなり、矢印Ｍと反対方向に捩れ弾性変形を生じて、矢印Ｍにて示した復元モーメント（弾性復元力）を発生し、これによって、平坦面部２，２が規定間隔値未満に相互接近することを阻止する。 The flat wall portion 5 and the projecting ridge portion 3 that has been compressed and deformed are continuously flat, and the upper end side 21 and the lower end side 22 of the metal fitting 20 are in contact with the flat surface portions 2 and 2 (metal touch). As the pair of flat surface portions 2 and 2 further approach each other, the metal fitting 20 receives an external force indicated by the large pressing force (clamping force) indicated by the arrows F ₂₁ and F ₂₂ from the flat surface portions 2 and 2. Thus, a torsional elastic deformation occurs in the direction opposite to the arrow M, and a restoring moment (elastic restoring force) indicated by the arrow M is generated, whereby the flat surface portions 2 and 2 approach each other below a specified interval value. Stop that.

その後、図４に矢印Ｐ₀ にて示した流体圧（内圧）が作用すると、金具20の矢印Ｍにて示した弾性復元力（復元モーメント）によって、上端辺21と下端辺22が平坦面部２，２に強く圧接することとなり、ゴムシール部10の矢印Ｎ₁₀方向へのはみ出しを、有効に防止する。即ち、金具20は、平坦面部２に対する隙間の自封作用をなす。
なお、図３（Ａ）（Ｂ）に於て、突隆部３，３の形状としては、円弧山型の場合を例示したが、これ以外に、２山型や３山型としたり、角山型とするも自由である。要するに、両突隆部３，３間の厚さ寸法Ｄが金具20の厚さ寸法Ｔ₂₀よりも十分大きく設定して、まず、ゴムシール部10が圧縮弾性変形を生じ、その後に、金具20が圧縮弾性変形を生じればよい。この図３（Ａ）（Ｂ）に於ても、図10にて既述したような特性グラフ図を示す。即ち、緩やかな勾配のゴム圧縮領域Ｇを示した後に、急峻勾配の金具弾性領域Ｈとなる。 Thereafter, when the fluid pressure (internal pressure) indicated by the arrow P _{0 in} FIG. 4 is applied, the upper end side 21 and the lower end side 22 are made flat by the elastic restoring force (restoring moment) indicated by the arrow M of the metal fitting 20. , 2, and the rubber seal 10 is effectively prevented from protruding in the direction of arrow N ₁₀ . That is, the metal fitting 20 performs a self-sealing action of the gap with respect to the flat surface portion 2.
3 (A) and 3 (B), the shape of the ridges 3 and 3 is exemplified by an arc mountain shape, but in addition to this, a two mountain shape, a three mountain shape, It is also free to make a type. In short, the thickness dimension D between both突隆portions 3, 3 is set sufficiently greater than the thickness T ₂₀ of the bracket 20, first, produce a rubber seal portion 10 is compressed elastically deformed, thereafter, the fitting 20 What is necessary is just to produce compression elastic deformation. 3A and 3B also show characteristic graphs as described above with reference to FIG. That is, after showing the rubber compression region G having a gentle gradient, the metal elastic region H has a steep gradient.

次に、図５は第４の実施の形態を示し、図６は第５の実施の形態を示し、横断面の全体外部形状は、図１，図３（Ａ）（Ｂ）の場合と同様ではあるが、内部に埋設された金具20の横断面形状が、弯曲Ｓ字状又は弯曲Ｚ字状としたり（図５）、折曲Ｓ字状又は折曲Ｚ字状とする（図６）。なお、図６に示したように、金具20の中央片部24の接触平坦面部２，２に対する傾斜角度θは、10°〜80°に設定する。なお、図５，図６では、図１に示した小貫孔８を省略した形状・構造である。また、図５，図６のように金具20を弯曲状又は折曲状とすれば、ゴムシール部10との接触面積が増加するので、特に接着タイプのモールドの場合の接着力がアップする利点がある。さらに、図10に示したグラフ図に於て、点Ｊ付近から金具弾性変形領域Ｈへのグラフ線が滑らかに変化移行する。
なお、図６の実施の形態では、金具中央片部24の傾斜角度θを45°〜80°と大きく設定することで、高圧の流体圧力Ｐ₀ 用とすることも容易である。 Next, FIG. 5 shows a fourth embodiment, FIG. 6 shows a fifth embodiment, and the overall external shape of the cross section is the same as in the case of FIGS. 1, 3A and 3B. However, the cross-sectional shape of the metal fitting 20 embedded therein is a curved S-shape or a curved Z-shape (FIG. 5), a folded S-shape or a folded Z-shape (FIG. 6). . As shown in FIG. 6, the inclination angle θ with respect to the contact flat surface portions 2 and 2 of the central piece 24 of the metal fitting 20 is set to 10 ° to 80 °. 5 and 6, the shape / structure is obtained by omitting the small through holes 8 shown in FIG. Further, if the metal fitting 20 is bent or bent as shown in FIGS. 5 and 6, the contact area with the rubber seal portion 10 is increased, so that there is an advantage that the adhesive strength is improved particularly in the case of an adhesive mold. is there. Further, in the graph shown in FIG. 10, the graph line from the vicinity of the point J to the metal elastic deformation region H changes smoothly.
In the embodiment of FIG. 6, it is easy to use the high pressure fluid pressure P ₀ by setting the inclination angle θ of the metal central piece 24 as large as 45 ° to 80 °.

次に、図７，図８，図９は、各々、第６，第７，第８の実施の形態を示し、金具20の断面形状が図１，図５，図６と各々同様であるが、金具付きゴムシールＳの横断面の全体輪郭線形状、及び、ゴムシール部10の断面形状が、相違し、幅寸法が小さく、径方向のコンパクト化が図られている。 Next, FIGS. 7, 8, and 9 show sixth, seventh, and eighth embodiments, respectively, and the cross-sectional shape of the metal fitting 20 is the same as that of FIGS. 1, 5, and 6, respectively. The overall contour shape of the transverse cross section of the rubber seal S with metal fittings and the cross sectional shape of the rubber seal portion 10 are different, the width dimension is small, and the radial direction is made compact.

即ち、シール全体輪郭線形状が、矩形部25と内径側略半円部26と外径側略半円部27とから成り、図７〜図９に２点鎖線を付記して、矩形部25と略半円部26，27との境界を示す。
矩形部25は平坦面部２と平行な方向に長辺を有し、それと直交する（上下）方向に短辺を有し、この矩形部25内に、金具20が埋込状に一体に設けられ、２個の略半円部26，27は点対称位置に配設される。
一方の略半円部26は矩形部25の上方の長辺の内径側に突設されて、一方の平坦面部２に接触する密封用突隆部３を構成し、他方の略半円部27は矩形部25の下方の長辺の外径側に突設されて、他方の平坦面部２に接触する密封用突隆部４を構成している。 That is, the overall outline of the seal is composed of a rectangular portion 25, an inner diameter side substantially semicircular portion 26, and an outer diameter side substantially semicircular portion 27, and a two-dot chain line is added to FIGS. And the boundary between the semi-circular portions 26 and 27.
The rectangular portion 25 has a long side in a direction parallel to the flat surface portion 2 and a short side in a direction (vertical) perpendicular to the rectangular portion 25, and the metal fitting 20 is integrally provided in the rectangular portion 25 in an embedded manner. The two substantially semicircular portions 26 and 27 are disposed at point symmetry positions.
One semicircular part 26 is provided on the inner diameter side of the long side above the rectangular part 25 to form a sealing protrusion 3 that contacts one flat surface part 2, and the other semicircular part 27. Is formed on the outer diameter side of the long side below the rectangular portion 25 and constitutes a sealing bulge portion 4 that contacts the other flat surface portion 2.

それ以外の構成については、図１〜図６と同一符号は同様の構成であり、作用効果も、基本的に図２，図４等にて述べた通りであるので、重複説明を省略する。
なお、図７〜図９の各実施の形態に於て、全体輪郭線形状は図示の横断面形状に限らず、例えば、突隆部３，４を三角山型や台形山型や２山型等としても良く、また、矩形部25の上下の長辺を傾斜させた平行四辺形とする等も、自由である。 For the other configurations, the same reference numerals as those in FIGS. 1 to 6 are the same, and the operational effects are basically the same as those described in FIGS.
7 to 9, the overall outline shape is not limited to the illustrated cross-sectional shape. It is also possible to use a parallelogram in which the upper and lower long sides of the rectangular portion 25 are inclined.

本発明は以上述べたように、相互に平行な一対の接触平坦面部２，２の間に介装される全体が環状の金具付きゴムシールであって、上記一対の接触平坦面部２，２に接触して相互接近に伴って弾性圧縮変形する密封用突隆部３，４を有するゴムシール部10と、上記ゴムシール部10に一体化されると共に上記一対の接触平坦面部２，２の一層の相互接近に伴って捩れ弾性変形を生じ該捩れ弾性変形の弾性復元力によって上記一対の接触平坦面部２，２の所定値以上の相互接近を阻止する金具20と、から成る構成としたので、接触平坦面部２が長手方向に波打っていたり、凹凸があった場合にも、ゴムシール部10の突隆部３，４が十分に大きく弾性変形しつつ追随できる。また、本発明に係る金具付シールは、安価かつ容易に製造可能である。しかも、フランジ等をボルトにて締付ける構造体に適用した場合、ボルト締付力が従来の図10に示した破線40Ａの如く突然に増加せず、金具弾性変形領域Ｈとしてしだいに増加するので、ボルト破断等の問題も防止できる。また、金具が弾性変形するため金具の初期厚以下に締付可能であり、締付け代（許容巾）が大きい。さらに、金具の弾性変形に伴いゴムシール部も弾性圧縮変形し締付力を増加可能である。また、金具の弾性復元力によりボルトが緩みにくくなるため、その点も加味すると、長期にわたり安定したシール性を有するといえる。また、ボルトの増締めを行って、シール性能を復元させることもできる。 As described above, the present invention is a rubber seal with an annular metal fitting that is interposed between a pair of contact flat surface portions 2 and 2 parallel to each other, and is in contact with the pair of contact flat surface portions 2 and 2. Thus, a rubber seal portion 10 having sealing ridges 3 and 4 which are elastically compressed and deformed as they approach each other, and a further mutual approach between the pair of contact flat surface portions 2 and 2 integrated with the rubber seal portion 10. And the metal fitting 20 which prevents the mutual contact of the pair of contact flat surface portions 2 and 2 beyond a predetermined value by the elastic restoring force of the torsional elastic deformation. Even when 2 is wavy in the longitudinal direction or has irregularities, the protruding portions 3 and 4 of the rubber seal portion 10 can follow while sufficiently elastically deforming. Moreover, the seal with metal fittings according to the present invention can be manufactured inexpensively and easily. Moreover, when the flange or the like is applied to a structure that is tightened with bolts, the bolt tightening force does not suddenly increase as in the conventional broken line 40A shown in FIG. Problems such as bolt breakage can also be prevented. In addition, since the metal fittings are elastically deformed, they can be tightened to less than the initial thickness of the metal fittings, and the tightening allowance (allowable width) is large. Further, the rubber seal portion is also elastically compressed and deformed with the elastic deformation of the metal fitting, and the tightening force can be increased. In addition, since the bolts are less likely to loosen due to the elastic restoring force of the metal fittings, it can be said that when this point is taken into account, the sealing performance is stable over a long period of time. Further, the sealing performance can be restored by tightening the bolts.

さらに、（いわゆる“面開き”を生じて、一対の接触平坦面部２，２の間隔寸法が微小寸法増大した際には、金具20の弾性的復元によって、金具20（の上端辺21，下端辺22）と、接触平坦面部２との間に間隙を生じることがなく、受圧状態にてゴム部のはみ出しを防止できる。
要するに、本発明は、金具20の捩れ弾性変形の反力としての弾性復元力、及び、十分な圧縮量を確保できるゴムシール部10の弾性復元力とを、巧妙に結合したシールであり、接触平坦面部２が長手方向に波打っていたり、凹凸が存在していても、追随して密封用突隆部３，４は常時密接して、優れたシール性能を発揮する。 Further, (when the so-called “face opening” occurs and the distance between the pair of flat contact surface portions 2 and 2 is increased by a minute size, the metal 20 is elastically restored, thereby causing the metal 20 to be elastically restored. 22) and the contact flat surface portion 2 do not generate a gap, and the rubber portion can be prevented from protruding in the pressure receiving state.
In short, the present invention is a seal in which the elastic restoring force as a reaction force of the torsional elastic deformation of the metal fitting 20 and the elastic restoring force of the rubber seal portion 10 capable of securing a sufficient amount of compression are skillfully combined, and the contact flatness Even if the surface portion 2 is wavy in the longitudinal direction or has irregularities, the sealing protrusions 3 and 4 are always in close contact with each other and exhibit excellent sealing performance.

また、本発明は、全体が環状のゴムシール部10に内圧又は外圧が作用した際に上記ゴムシール部10のラジアル外方又はラジアル内方へのはみ出しを、上記金具20が上記弾性復元力によって上記一対の接触平坦面部２，２に対して接近乃至接触して、防止するように構成したので、ゴムシール部の破壊を防止し、流体をシールして一層優秀なシール性能を発揮する。 Further, the present invention provides a method in which the rubber seal portion 10 protrudes radially outward or radially inward when an internal pressure or an external pressure is applied to the annular rubber seal portion 10 as a whole. The contact flat surface portions 2 and 2 are prevented from approaching or contacting with each other, so that the rubber seal portion is prevented from being broken and the fluid is sealed to exhibit a more excellent sealing performance.

また、本発明は、上記金具20は、横断面に於て、上記一対の接触平坦面部２，２に対して、10°〜80°の傾斜角度θをもって傾斜状に、ゴムシール部10に一部乃至全体が埋設状として設けられているので、使用条件、用途に柔軟に対応でき、例えば、低圧用には傾斜角度θを小さく、高圧用には傾斜角度θを大きく、設定容易である。つまり、θ＜10°では、弾性復元力が過小となり、しかも、ボルトの少しの締付けで、突然に大きな抵抗力を示す従来例と同様の問題を発生する虞がある。逆に、θ＞80°では、金具20の弾性圧縮変形が生じ難く剛性が過大となる。 Further, according to the present invention, the metal fitting 20 is partly attached to the rubber seal portion 10 so as to be inclined at an inclination angle θ of 10 ° to 80 ° with respect to the pair of flat contact surface portions 2 and 2 in the cross section. In addition, since the entire structure is provided as an embedded shape, it can flexibly respond to use conditions and applications. For example, the inclination angle θ is small for low pressure, and the inclination angle θ is large for high pressure, and can be set easily. That is, when θ <10 °, the elastic restoring force is too small, and there is a possibility that the same problem as in the conventional example showing a large resistance force suddenly occurs with a slight tightening of the bolt. On the other hand, when θ> 80 °, the elastic compression deformation of the metal fitting 20 hardly occurs and the rigidity becomes excessive.

また、上記金具20は、横断面形状が弯曲Ｓ字状又は弯曲Ｚ字状であることによって、金具20と、シール部10との接着面積が増加して、相互に強固に一体化でき、寿命が延びる。
また、上記金具20は、横断面形状が折曲Ｓ字状又は折曲Ｚ字状であって、金具中央片部24の上記一対の接触平坦面部２，２に対する傾斜角度θを、10°〜80°に設定したので、金具20とシール部10との接着面積が増加して、相互に強固に一体化でき、寿命が延びる。さらに、θ＜10°では弾性復元力が過小となり、かつ、金具20の弾性変形量が過小となり、逆に、θ＞80°では、弾性変形が生じ難く、剛性が過大となるが、本発明では10°≦θ≦80°であることによって、適正な弾性復元力が得られる。
また、上記金具20は、ゴムシール部10に一部乃至全体が埋設状に設けられると共に埋設部位23に小貫孔８を形成して、分断されたゴムシール部10のゴム部材が該小貫孔８に侵入して連結ゴム部９を形成するよう構成したので、ゴムシール部10と金具20の強固な一体構造が得られ、シール寿命が延びる。 Further, the metal fitting 20 has a curved S-shape or a curved Z-shape in cross section, so that the bonding area between the metal fitting 20 and the seal portion 10 is increased and can be firmly integrated with each other. Is extended.
The metal fitting 20 has a cross-sectional shape of a bent S shape or a bent Z shape, and the inclination angle θ of the metal piece central piece portion 24 with respect to the pair of flat contact surface portions 2 and 2 is 10 ° to Since the angle is set to 80 °, the bonding area between the metal fitting 20 and the seal portion 10 increases, and can be firmly integrated with each other, extending the life. Further, when θ <10 °, the elastic restoring force is too small, and the amount of elastic deformation of the metal fitting 20 is too small. Conversely, when θ> 80 °, the elastic deformation hardly occurs and the rigidity becomes excessive. Then, an appropriate elastic restoring force can be obtained by 10 ° ≦ θ ≦ 80 °.
The metal fitting 20 is partly or entirely embedded in the rubber seal portion 10 and has a small through hole 8 formed in the embedded portion 23 so that the rubber member of the divided rubber seal portion 10 enters the small through hole 8. Thus, the connecting rubber portion 9 is formed, so that a strong integrated structure of the rubber seal portion 10 and the metal fitting 20 is obtained, and the seal life is extended.

２接触平坦面部
３，４密封用突隆部
８小貫孔
９連結ゴム部
10 ゴムシール部
20 金具
23 埋設部
24 金具中央片部
θ 傾斜角度 2 Contact flat surface part 3, 4 Protrusion part for sealing 8 Small through hole 9 Linking rubber part
10 Rubber seal
20 bracket
23 Buried section
24 Bracket center piece θ Inclination angle

Claims

A rubber seal with a metal fitting, which is interposed between a pair of flat contact surface portions (2) and (2) parallel to each other,
A rubber seal portion (10) having sealing ridges (3) and (4) which come into contact with the pair of contact flat surface portions (2) and (2) and which are elastically compressed and deformed as they approach each other;
The pair of contacts is integrated with the rubber seal portion (10) and undergoes torsional elastic deformation as the pair of contact flat surface portions (2) and (2) come closer to each other, and the elastic restoring force of the torsional elastic deformation causes the pair of contacts. A metal fitting (20) for preventing the flat surface portions (2) and (2) from approaching each other over a predetermined value;
A rubber seal with metal fittings characterized by comprising:

When the internal or external pressure is applied to the annular rubber seal portion (10) as a whole, the rubber seal portion (10) protrudes radially outward or radially inward, and the metal fitting (20) causes the pair to The rubber seal with a metal fitting according to claim 1, wherein the rubber seal is configured to approach or contact the flat contact surface portion (2) and (2) of the metal plate to prevent it.

The metal fitting (20) has a rubber seal portion (10) inclined in a cross section with an inclination angle (θ) of 10 ° to 80 ° with respect to the pair of contact flat surface portions (2) and (2). The rubber seal with a metal fitting according to claim 1 or 2, wherein a part or the whole of the rubber seal is provided in an embedded state.

The rubber seal with a metal fitting according to claim 1 or 2, wherein the metal fitting (20) has a curved S-shape or a curved Z-shape in cross section.

The metal fitting (20) has a bent S-shape or a bent Z-shape in cross section, and an inclination angle (2) (2) with respect to the pair of flat contact surface portions (2) (2) of the metal piece central piece (24). The rubber seal with a metal fitting according to claim 1 or 2, wherein θ) is set to 10 ° to 80 °.

The metal fitting (20) is partly or entirely embedded in the rubber seal portion (10) and has a small through hole (8) in the embedded portion (23), so that the rubber of the divided rubber seal portion (10) The rubber seal with a metal fitting according to claim 1, 2, 3, 4 or 5, wherein a member enters the small through hole (8) to form a connecting rubber portion (9).