JP2007232014A - Gasket - Google Patents

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JP2007232014A
JP2007232014A JP2006052420A JP2006052420A JP2007232014A JP 2007232014 A JP2007232014 A JP 2007232014A JP 2006052420 A JP2006052420 A JP 2006052420A JP 2006052420 A JP2006052420 A JP 2006052420A JP 2007232014 A JP2007232014 A JP 2007232014A
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Japan
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gasket
protrusion
width
contact surface
cylinder head
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Japanese (ja)
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Kiyohiro Suzuki
清宏 鈴木
Mitsumori Kameike
満守 亀池
Shuji Yoshitsune
修司 義経
Kazunori Takeno
一記 武野
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Nok Corp
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Nok Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a gasket in which falling down of projections of a gasket is not induced and the sealability is not deteriorated due to deterioration of contact face pressure even when the gasket is mounted between members having different thermal expansion coefficients. <P>SOLUTION: The gasket 1 is mounted on one member 2 provided with a groove 21, and is in close contact with a flat surface 31 of the other member 3 different in thermal expansion from the one member 2. The gasket 1 is for sealing a gap in the vertical direction of the both members (2, 3). The two projections 5 are formed in the width direction Y on a contact surface 12 in close contact with at least the other member 3, and the cross sectional shape of the projections 5 is made a trapezoidal shape 41. Further, in the trapezoidal shape 41 of the projections 5, a crossing angle α is set within a range of 50° to 75°, a projection width Wa is set within the range of 5 to 15% of a gasket width Wb, and a center distance Wc between the projections 5 is set within the range of 25 to 50% of the gasket width Wb. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、自動車等に搭載されるエンジンのインレットマニホールド用、フィルターブランケット用、シリンダーヘッドカバー用及びタイミングベルトカバー用等に用いられるガスケットに関する。   The present invention relates to a gasket used for an inlet manifold, a filter blanket, a cylinder head cover, a timing belt cover, and the like of an engine mounted on an automobile or the like.

自動車等に搭載されるエンジンのインレットマニホールド用、フィルターブランケット用、シリンダーヘッドカバー用及びタイミングベルトカバー用等にゴム状弾性体等のガスケットが用いられており、このガスケットは、溝が設けられた一の部材に装着され、他の部材の平坦面に密接し、両部材の上下方向の隙間をシールする構成となっている。   Gaskets such as rubber elastic bodies are used for inlet manifolds, filter blankets, cylinder head covers, timing belt covers, etc. for engines mounted on automobiles, etc. It is attached to the member, is in close contact with the flat surface of the other member, and seals the gap in the vertical direction of both members.

近年、軽量化の狙いから部材の樹脂化が進んでいるが、カバー部材のみを樹脂化することが行われているので、熱膨張係数の異なる部材間をガスケットでシールすることが要請される。一般に、シール性能は、接触面圧を大きくすることで向上するため、下記特許文献１及び２には、相手部材との接触面に先端が円弧形状の突起を設けることが開示されている。   In recent years, resinization of members has progressed for the purpose of weight reduction. However, since only the cover member is made resinous, it is required to seal between members having different thermal expansion coefficients with gaskets. In general, since the sealing performance is improved by increasing the contact surface pressure, the following Patent Documents 1 and 2 disclose that a protrusion having an arcuate tip is provided on the contact surface with the mating member.

しかしながら、図７に示すように、熱膨張係数が異なる材質で両部材が成形されると（例えば、シリンダーヘッド１０１がアルミニウムで、シリンダーヘッドカムカバー１０２が樹脂である場合）、高温若しくは低温下で伸縮量の差異に伴う相対的横変位が生じ、高低温下においてシリンダーヘッド１０１に密接しているガスケット１０３の突起１０４が相対的横変位（図においては、シリンダーヘッド１０１がカムカバー１０２に対し左方向に変位している場合を示している。）に追随し、突起１０４に倒れが誘起されるので、接触面圧の低下を招き、シール性能の低下が懸念された。   However, as shown in FIG. 7, when both members are formed of materials having different coefficients of thermal expansion (for example, when the cylinder head 101 is made of aluminum and the cylinder head cam cover 102 is made of resin), it expands and contracts at high or low temperatures. Relative lateral displacement due to the difference in amount occurs, and the protrusion 104 of the gasket 103 that is in close contact with the cylinder head 101 at high and low temperatures is relatively laterally displaced (in the figure, the cylinder head 101 moves to the left with respect to the cam cover 102). In this case, the protrusion 104 is tilted, and the contact surface pressure is lowered, and there is a concern that the sealing performance is lowered.

特開２００２−３６４７５３公報Japanese Patent Laid-Open No. 2002-364753 特開２００３−３２９１３９公報JP 2003-329139 A

本発明は、上記問題点を解決するためになされたものであって、その目的とするところは、熱膨張係数が異なる部材間に装着された場合であっても、ガスケットの突起に倒れが誘起されることがなく、接触面圧の低下によるシール性能が低下しないガスケットを提供することである。   The present invention has been made to solve the above-described problems, and the object of the present invention is to induce a collapse of the protrusion of the gasket even when mounted between members having different coefficients of thermal expansion. It is an object of the present invention to provide a gasket in which the sealing performance is not deteriorated due to a decrease in contact surface pressure.

上記目的を達成するため、本発明の請求項１に係るガスケットは、溝が設けられた一の部材に装着され、該一の部材と熱膨張が異なる他の部材の平坦面に密接し、前記両部材の上下方向の隙間をシールするガスケットであって、前記部材に密接する接触面に二の突起が前記上下方向と交差する幅方向に形成され、前記突起の断面形状が台形形状であることを特徴とするものである。   In order to achieve the above object, a gasket according to claim 1 of the present invention is attached to one member provided with a groove and is in close contact with a flat surface of another member having a different thermal expansion from the one member, A gasket for sealing a gap in the vertical direction of both members, wherein two protrusions are formed in a width direction intersecting the vertical direction on a contact surface in close contact with the member, and a cross-sectional shape of the protrusion is a trapezoidal shape. It is characterized by.

更に、本発明の請求項２に係るガスケットは、請求項１に記載のガスケットであって、前記突起の台形形状は、前記部材に密接する上辺と交差する両斜辺がなす交差角度が５０乃至７５度であり、上記上辺の突起幅がガスケット幅の５乃至１５％であり、前記両突起の中心間距離がガスケット幅の２５乃至５０％であることを特徴とするものである。   Furthermore, the gasket according to claim 2 of the present invention is the gasket according to claim 1, wherein the trapezoidal shape of the protrusion has an intersecting angle formed by both oblique sides intersecting with an upper side in close contact with the member of 50 to 75. The protrusion width of the upper side is 5 to 15% of the gasket width, and the distance between the centers of the protrusions is 25 to 50% of the gasket width.

本発明は、以下の効果を奏する。   The present invention has the following effects.

上記構成を備えた本発明の請求項１に記載のガスケットは、少なくとも他の部材に密接する接触面に二の突起が形成されており、その突起の断面形状が台形形状であるので、熱膨張係数の異なる材質で成形されている両部材の隙間をシールするとき、雰囲気温度の変化で両部材の伸縮量の差異に伴う相対的横変位が生じてもガスケットの突起の倒れが抑制され、高い接触面圧が確保されるので、高いシール性を確保することができる。   The gasket according to claim 1 of the present invention having the above-described configuration has at least two protrusions formed on a contact surface in close contact with another member, and the protrusion has a trapezoidal cross section, and therefore has a thermal expansion. When sealing the gap between the two parts made of materials with different coefficients, even if a relative lateral displacement occurs due to the difference in expansion and contraction amount of the two parts due to changes in the atmospheric temperature, the collapse of the gasket protrusion is suppressed, which is high Since the contact surface pressure is secured, high sealing performance can be secured.

更に、突起の台形形状は、請求項２に記載のように上辺と交差する両斜辺がなす交差角度を５０乃至７５度の範囲とし、上辺の突起幅をガスケット幅の５乃至１５％の範囲とし、両突起の中心間距離をガスケット幅の２５乃至５０％の範囲とするとよい。   Further, as described in claim 2, the trapezoidal shape of the protrusion is such that the crossing angle formed by both oblique sides intersecting the upper side is in the range of 50 to 75 degrees, and the protrusion width of the upper side is in the range of 5 to 15% of the gasket width. The distance between the centers of both protrusions may be in the range of 25 to 50% of the gasket width.

以下に図面を参照して、この発明の好適な実施の形態を例示して説明する。ただし、この発明の範囲は、特に限定的記載がないかぎりは、この実施の形態に記載されている内容に限定する趣旨のものではない。   Preferred embodiments of the present invention will be described below with reference to the drawings. However, the scope of the present invention is not intended to be limited to the contents described in this embodiment unless otherwise specified.

図１に示す通り、本実施形態に係るガスケット１は、一の部材であるカバー部材のシリンダーヘッドカムカバー２と、他の部材である本体のシリンダーヘッド３との上下方向Ｙの隙間をシールするために装着される。   As shown in FIG. 1, the gasket 1 according to the present embodiment seals the gap in the vertical direction Y between the cylinder head cam cover 2 of the cover member that is one member and the cylinder head 3 of the main body that is the other member. It is attached to.

シリンダーヘッドカムカバー２は樹脂で成形されており、一方シリンダーヘッド３はアルミニウムで成形されているので、熱膨張係数が異なり、雰囲気温度の変化で両部材の伸縮量に差異が生じ、相対的横変位が発生する。   Since the cylinder head cam cover 2 is molded from resin, while the cylinder head 3 is molded from aluminum, the coefficient of thermal expansion differs, and the amount of expansion and contraction of both members varies with changes in ambient temperature, resulting in relative lateral displacement. Will occur.

シリンダーヘッドカムカバー２には溝２１が設けられており、この溝２１にガスケット１が装着され、溝底底面２２に密接するカバー側接触面１１が形成されると共に、シリンダーヘッド３の平坦面３１に密接する本体側接触面１２が形成され、これにより両部材（２，３）間の上下方向Ｙの隙間をシールしている。   The cylinder head cam cover 2 is provided with a groove 21, and the gasket 1 is attached to the groove 21 to form a cover side contact surface 11 that is in close contact with the bottom surface 22 of the groove bottom, and a flat surface 31 of the cylinder head 3. An intimate body-side contact surface 12 is formed, thereby sealing the gap in the vertical direction Y between both members (2, 3).

ガスケット１は、図２に示す通り、カバー側接触面１１に断面形状が台形形状４１の突起４が上下方向Ｙと交差する幅方向Ｘに２つ形成されていると共に、本体側接触面１２にも台形形状４１の突起５が幅方向Ｘに２つ形成されている。また、側面１３の上下方向Ｙの略中央両側に、倒れ防止用に凸部１４が設けられている。   As shown in FIG. 2, the gasket 1 has two protrusions 4 having a trapezoidal shape 41 in the cross-sectional shape on the cover side contact surface 11 in the width direction X intersecting the vertical direction Y, and the main body side contact surface 12. Also, two protrusions 5 having a trapezoidal shape 41 are formed in the width direction X. Further, convex portions 14 are provided on both sides of a substantially central portion in the vertical direction Y of the side surface 13 for preventing the collapse.

突起（４，５）の台形形状４１は、カバー側接触面１１に形成されている突起４と本体側接触面１２に形成されている突起５とは同一形状であるので、本体側接触面１２に形成されている突起５の台形形状４１について以下詳述する。図３に示す通り、この台形形状４１の突起５は、シリンダーヘッド３に密接する突起５の上辺５１と交差する両斜辺（５２,５３）の交差角度αは、５０乃至７５度の範囲内で、突起５の上辺５１の突起幅Ｗａは、ガスケット１の幅Ｗｂの５乃至１５％の範囲内で、本体側接触面１２の幅方向Ｘに形成されている２つの突起（５ａ，５ｂ）の中で一方の突起５ａの中心μ１と他方の突起５ｂの中心μ２との中心間距離Ｗｃは、ガスケット１の幅Ｗｂの２５乃至５０％の範囲内で、各々適宜設定される。なお、ガスケット１の幅Ｗｂとは、突起５を形成する外側斜辺５２の根本部分５４間におけるガスケットの幅をいう。   In the trapezoidal shape 41 of the protrusions (4, 5), the protrusion 4 formed on the cover side contact surface 11 and the protrusion 5 formed on the main body side contact surface 12 have the same shape. The trapezoidal shape 41 of the protrusion 5 formed in the above will be described in detail below. As shown in FIG. 3, the projection 5 of the trapezoidal shape 41 has an intersecting angle α of both oblique sides (52, 53) intersecting the upper side 51 of the projection 5 closely contacting the cylinder head 3 within a range of 50 to 75 degrees. The protrusion width Wa of the upper side 51 of the protrusion 5 is within the range of 5 to 15% of the width Wb of the gasket 1, and the two protrusions (5 a, 5 b) formed in the width direction X of the main body side contact surface 12. Among them, the center-to-center distance Wc between the center μ1 of the one protrusion 5a and the center μ2 of the other protrusion 5b is appropriately set within a range of 25 to 50% of the width Wb of the gasket 1. The width Wb of the gasket 1 refers to the width of the gasket between the root portions 54 of the outer oblique sides 52 that form the protrusions 5.

上述のように、交差角度αを５０乃至７０度の範囲で設定するのは、交差角度αがこれ以下の角度では、シリンダーヘッド３が相対的横変位したとき突起５の倒れが生じ、逆にこれ以上の角度では、反発力の増加、面圧の低下を招くためである。また、突起幅Ｗａをガスケット幅Ｗｂの５乃至１５％の範囲で設定するのは、突起幅Ｗａがこれ以下の幅では、シリンダーヘッド３が相対的横変位したとき突起５の倒れが生じ、逆にこれ以上の幅では、反発力の増加、面圧の低下を招くためである。また、両突起の中心間距離Ｗｃをガスケット幅Ｗｂの２５乃至５０％の範囲で設定するのは、中心間距離Ｗｃがこれ以下の幅では、２つの突起５が恰も一体となり広い突起幅である１つの突起のように振る舞い、面圧の低下を招くためであり、逆にこれ以上の幅では、お互いの突起５の倒れを抑止する効果が小さくなり、倒れが生じるためである。   As described above, the intersecting angle α is set in the range of 50 to 70 degrees when the intersecting angle α is less than this, and when the cylinder head 3 is relatively laterally displaced, the protrusion 5 falls down. This is because at an angle larger than this, the repulsive force increases and the surface pressure decreases. In addition, the protrusion width Wa is set within a range of 5 to 15% of the gasket width Wb. If the protrusion width Wa is less than this, the protrusion 5 is tilted when the cylinder head 3 is relatively laterally displaced. If the width is larger than this, the repulsive force increases and the surface pressure decreases. The center distance Wc between the two protrusions is set in the range of 25 to 50% of the gasket width Wb. When the center distance Wc is less than this, the two protrusions 5 are integrated with each other to have a wide protrusion width. This is because it behaves like a single protrusion and causes a reduction in surface pressure. Conversely, when the width is larger than this, the effect of preventing the protrusions 5 from falling is reduced, resulting in a fall.

ガスケット１はゴム状弾性体若しくは樹脂で成形されている。ゴム状弾性体の場合、ゴム硬度が４０乃至７０のアクリル系ゴム、ニトリル系ゴム及びフッ素系ゴムなどが用いられ、樹脂では、熱可塑性エラストマーなどが用いられる。   The gasket 1 is formed of a rubber-like elastic body or resin. In the case of a rubber-like elastic body, acrylic rubber, nitrile rubber, and fluorine rubber having a rubber hardness of 40 to 70 are used, and thermoplastic elastomer is used as the resin.

以上のように構成されたガスケット１は、樹脂で成形されているシリンダーヘッドカムカバー２の溝２１の溝底底面２２にカバー側接触面１１が密接するように装着されて２つの台形形状突起４がシリンダーヘッドカムカバー２に密接し、アルミニウムで成形されているシリンダーヘッド３の平坦面３１に本体側接触面１２に形成された２つの台形形状突起５が密接し、シリンダーヘッドカムカバー２とシリンダーヘッド３との上下方向Ｙの隙間をシールしている。この場合にシリンダーヘッドカムカバー２とシリンダーヘッド３とは熱膨張係数が異なるため、雰囲気温度が変化するとシリンダーヘッドカムカバー２とシリンダーヘッド３との伸縮量に差異に伴う相対的横変位が生じ、シリンダーヘッド３の平坦面３１に密接している本体側接触面１２に形成されている突起５がそれに追随する。しかし、突起５の断面形状が台形形状４１であるので、突起５の倒れを防止することが可能となり、また突起５が２つ形成されているので互いの突起５の倒れを防止することが可能となる。したがって、高い接触面圧を確保することができ、高いシール性を確保することが可能となる。   The gasket 1 configured as described above is mounted so that the cover-side contact surface 11 is in close contact with the groove bottom bottom surface 22 of the groove 21 of the cylinder head cam cover 2 formed of resin, and the two trapezoidal protrusions 4 are formed. The two trapezoidal protrusions 5 formed on the body-side contact surface 12 are in close contact with the flat surface 31 of the cylinder head 3 formed of aluminum in close contact with the cylinder head cam cover 2, and the cylinder head cam cover 2, the cylinder head 3, The gap in the vertical direction Y is sealed. In this case, the cylinder head cam cover 2 and the cylinder head 3 have different coefficients of thermal expansion. Therefore, when the ambient temperature changes, the cylinder head cam cover 2 and the cylinder head 3 have a relative lateral displacement due to the difference in expansion and contraction. The projection 5 formed on the main body side contact surface 12 that is in close contact with the 3 flat surface 31 follows. However, since the cross-sectional shape of the protrusion 5 is a trapezoidal shape 41, it is possible to prevent the protrusion 5 from falling, and since two protrusions 5 are formed, it is possible to prevent the protrusions 5 from falling down. It becomes. Therefore, a high contact surface pressure can be ensured and high sealing performance can be ensured.

図４の実施形態２、及び図５の実施形態３は、上述の実施形態１と異なり、２つの台形形状の突起５が本体側接触面１２にのみ形成されている場合である。実施形態２は、カバー側接触面１１に１つの突起４が形成されており、その突起４の形状は先端が丸みを有した三角形状４２であり、略中央に形成されている凸部１４からカバー側接触面１１寄りの側面１３ａは、両側ともテーパ面４３を形成している。   The second embodiment of FIG. 4 and the third embodiment of FIG. 5 are different from the above-described first embodiment in that two trapezoidal protrusions 5 are formed only on the main body side contact surface 12. In the second embodiment, one protrusion 4 is formed on the cover-side contact surface 11, and the shape of the protrusion 4 is a triangular shape 42 having a rounded tip, and is formed from the convex portion 14 formed substantially at the center. The side surface 13a near the cover side contact surface 11 forms a tapered surface 43 on both sides.

また、実施形態３は、カバー側接触面１１の突起４が１つで先端が丸みを有した三角形状４２である点は実施形態２と同じであるが、略中央に形成されている凸部１４からカバー側接触面１１寄りの側面１３ａに、両側ともくびれ部４４を有している。   The third embodiment is the same as the second embodiment in that the cover-side contact surface 11 has a single protrusion 4 and a rounded tip 42. However, the convex portion is formed substantially at the center. 14 has a constricted portion 44 on both sides on the side surface 13a near the cover side contact surface 11.

実施形態２及び実施形態３の場合においても、本体側接触面１２には突起５が二つ形成されていて、その突起５の断面形状が台形形状４１であるので、相対的横変位が生じたときでも、突起５の倒れを防止して高い接触面圧を確保することができ、高いシール性を確保することが可能となる。   Also in the case of Embodiment 2 and Embodiment 3, two protrusions 5 are formed on the main body side contact surface 12, and the cross-sectional shape of the protrusion 5 is a trapezoidal shape 41, so that a relative lateral displacement occurred. Even at this time, it is possible to prevent the protrusion 5 from falling and to ensure a high contact surface pressure, and to ensure high sealing performance.

なお、本実施形態１乃至３では、側面１３に凸部１４を設けたものについて説明したが、凸部を設けない場合であってもよい。凸部１４を設けると、ガスケット１の溝２１内への装着時、及び装着されたガスケット１の圧縮時、ガスケット１の姿勢を垂直に保持する機能を有する。   In addition, although Embodiment 1 thru | or 3 demonstrated what provided the convex part 14 in the side surface 13, the case where a convex part is not provided may be sufficient. Providing the convex portion 14 has a function of maintaining the posture of the gasket 1 vertically when the gasket 1 is mounted in the groove 21 and when the mounted gasket 1 is compressed.

［実施例］
上述の実施形態１の効果を確認するため下記ガスケットでの評価を行った。評価したガスケットは、図２に示す形状のＪＩＳ硬度６０であるゴム状弾性体で成形されたものであって、ガスケット高さＨ１を８．９ｍｍ、ガスケット幅Ｗｂを２．３ｍｍとし、交差角αを４５度・６０度・９０度の３水準、突起幅Ｗａをガスケット幅Ｗｂの２％・９％・２２％の３水準、中心間距離Ｗｃをガスケット幅Ｗｂの２２％・３５％・７４％の３水準で変化させた図６の７種類である。なお、評価する７種類の全てのガスケットには、側面に凸部が形成されている。また、ガスケット高さＨ１とは、図２に示すカバー側接触面１１に形成されている突起４の上辺から本体側接触面１２に形成されている突起５の上辺までの距離Ｈ１をいう。 [Example]
In order to confirm the effect of the first embodiment, the following gasket was evaluated. The evaluated gasket was molded with a rubber-like elastic body having a JIS hardness of 60 having the shape shown in FIG. 2, the gasket height H1 was 8.9 mm, the gasket width Wb was 2.3 mm, and the crossing angle α 3 levels of 45 °, 60 ° and 90 °, projection width Wa is 3% of gasket width Wb, 2%, 9% and 22%, center distance Wc is 22%, 35% and 74% of gasket width Wb These are the seven types shown in FIG. In addition, convex parts are formed on the side surfaces of all the seven types of gaskets to be evaluated. Further, the gasket height H1 means a distance H1 from the upper side of the protrusion 4 formed on the cover side contact surface 11 shown in FIG. 2 to the upper side of the protrusion 5 formed on the main body side contact surface 12.

評価方法は、溝が形成されているカバー部材にガスケットを装着し、本体部材である平坦面でガスケットを２．４ｍｍ圧縮し、両部材の熱膨張係数が異なるため雰囲気温度の変化で生じる伸縮の差異に伴う相対的横変位に相当する変位０．７ｍｍを平坦部材に付与したときの、突起の倒れ、面圧、反発力について評価を行い、その結果を同じく図６に記載した。   In the evaluation method, a gasket is attached to the cover member in which the groove is formed, and the gasket is compressed by 2.4 mm on the flat surface which is the main body member. When a displacement of 0.7 mm corresponding to the relative lateral displacement associated with the difference was applied to the flat member, the tilt of the protrusion, the surface pressure, and the repulsive force were evaluated, and the results are also shown in FIG.

評価結果より、突起の交差角αについては、図６のＮｏ．１、Ｎｏ．２、Ｎｏ．３より、交差角αが４５度では突起に倒れが生じ、９０度では６０度と同様に突起の倒れは生じないが、９０度の場合には面圧、反発力の点で好ましくない。突起幅については、同じくＮｏ．１、Ｎｏ．４、Ｎｏ．５より、突起幅Ｗａが２％では突起に倒れが生じ、２２％では９％と同様に突起の倒れは生じないが、２２％の場合には面圧、反発力の点で好ましくない。突起の中心間距離Ｗｃについては、同じくＮｏ．１、Ｎｏ．６、Ｎｏ．７より、中心間距離Ｗｃが７４％では突起に倒れが生じ、２２％では３５％と同様に突起の倒れは生じないが、２２％の場合には面圧の点で好ましくない。   From the evaluation results, the intersection angle α of the protrusions was determined as No. 1 in FIG. 1, no. 2, no. 3 indicates that the protrusion falls when the crossing angle α is 45 degrees, and the protrusion does not fall when the crossing angle α is 90 degrees as in the case of 60 degrees. However, when the intersection angle α is 90 degrees, it is not preferable in terms of surface pressure and repulsive force. Regarding the protrusion width, no. 1, no. 4, no. 5 shows that when the protrusion width Wa is 2%, the protrusion falls, and when it is 22%, the protrusion does not fall as in the case of 9%. However, when it is 22%, the surface pressure and the repulsive force are not preferable. For the distance Wc between the centers of the protrusions, the same applies to 1, no. 6, no. 7. From FIG. 7, when the center-to-center distance Wc is 74%, the protrusion falls, and when it is 22%, the protrusion does not fall as in the case of 35%. However, when it is 22%, the surface pressure is not preferable.

以上のとおり、交差角αが５０乃至７５度の範囲内である６０度であり、突起幅Ｗａがガスケット幅Ｗｂの５乃至１５％の範囲内である９％であり、中心間距離Ｗｃがガスケット幅Ｗｂの２５乃至５０％の範囲内の３５％であるＮｏ．１の場合に、突起の倒れが発生せず、耐倒れ性・耐シール性で優れていることが認められた。   As described above, the crossing angle α is 60 degrees within the range of 50 to 75 degrees, the protrusion width Wa is 9% within the range of 5 to 15% of the gasket width Wb, and the center-to-center distance Wc is the gasket. No. which is 35% within a range of 25 to 50% of the width Wb. In the case of No. 1, it was confirmed that the protrusion did not fall down and was excellent in fall resistance and seal resistance.

本発明の実施形態１のガスケットを両部材間に装着した状態の断面図Sectional drawing of the state which mounted | wore the both members with the gasket of Embodiment 1 of this invention 本発明の実施形態１のガスケットを示す断面図Sectional drawing which shows the gasket of Embodiment 1 of this invention 図２のガスケットの突起部分の拡大図Enlarged view of the protruding part of the gasket in FIG. 本発明の実施形態２のガスケットを示す断面図Sectional drawing which shows the gasket of Embodiment 2 of this invention 本発明の実施形態３のガスケットを示す断面図Sectional drawing which shows the gasket of Embodiment 3 of this invention 本発明の実施例を比較例と対比して評価した表Tables in which examples of the present invention were evaluated in comparison with comparative examples 従来例のガスケットを両部材間に装着した状態を示す説明図Explanatory drawing which shows the state which mounted the gasket of the prior art example between both members

符号の説明Explanation of symbols

１ ガスケット
２ シリンダーヘッドカムカバー（一の部材）
３ シリンダーヘッド（他の部材）
４，５，５ａ，５ｂ 突起
１１，１２ 接触面
１３，１３ａ 側面
１４ 凸部
２１ 溝
２２ 溝底底面
３１ 平坦面
４１ 台形形状
４２ 三角形状
４３ テーパ面
５１ 上辺
５２，５３ 斜辺
５４ 根本部
Ｗａ 突起幅
Ｗｂ ガスケット幅
Ｗｃ 中心間距離
α 交差角
μ１，μ２ 中心
Ｘ 幅方向
Ｙ 上下方向 1 Gasket 2 Cylinder head cam cover (one member)
3 Cylinder head (other members)
4, 5, 5a, 5b Protrusion 11, 12 Contact surface 13, 13a Side surface 14 Convex portion 21 Groove 22 Groove bottom bottom surface 31 Flat surface 41 Trapezoidal shape 42 Triangular shape 43 Tapered surface 51 Upper side 52, 53 Oblique side 54 Root portion Wa Protrusion width Wb Gasket width Wc Center-to-center distance α Crossing angle μ1, μ2 Center X Width direction Y Vertical direction

Claims (2)

溝が設けられた一の部材に装着され、該一の部材と熱膨張が異なる他の部材の平坦面に密接し、前記両部材の上下方向の隙間をシールするガスケットであって、
前記部材に密接する接触面に二の突起が前記上下方向と交差する幅方向に形成され、前記突起の断面形状が台形形状であることを特徴とするガスケット。 A gasket that is attached to one member provided with a groove, is in close contact with a flat surface of another member that is different in thermal expansion from the one member, and seals the vertical gap between the two members,
A gasket, wherein two protrusions are formed in a width direction intersecting the vertical direction on a contact surface in close contact with the member, and a cross-sectional shape of the protrusion is a trapezoidal shape. 前記突起の台形形状は、前記部材に密接する上辺と交差する両斜辺がなす交差角度が５０乃至７５度であり、上記上辺の突起幅がガスケット幅の５乃至１５％であり、前記両突起の中心間距離がガスケット幅の２５乃至５０％であることを特徴とする請求項１に記載のガスケット。   In the trapezoidal shape of the protrusion, the intersecting angle formed by the two oblique sides intersecting with the upper side in close contact with the member is 50 to 75 degrees, and the protrusion width of the upper side is 5 to 15% of the gasket width. The gasket according to claim 1, wherein the center-to-center distance is 25 to 50% of the gasket width.
JP2006052420A 2006-02-28 2006-02-28 Gasket Pending JP2007232014A (en)

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WO2010047165A1 (en) * 2008-10-23 2010-04-29 Nok株式会社 Gasket
WO2016059933A1 (en) * 2014-10-17 2016-04-21 Nok株式会社 Rubber gasket
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WO2010047165A1 (en) * 2008-10-23 2010-04-29 Nok株式会社 Gasket
JP2010101398A (en) * 2008-10-23 2010-05-06 Nok Corp Gasket
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