WO2015060025A1 - Gasket - Google Patents

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Publication number
WO2015060025A1
WO2015060025A1 PCT/JP2014/073613 JP2014073613W WO2015060025A1 WO 2015060025 A1 WO2015060025 A1 WO 2015060025A1 JP 2014073613 W JP2014073613 W JP 2014073613W WO 2015060025 A1 WO2015060025 A1 WO 2015060025A1
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WO
WIPO (PCT)
Prior art keywords
gasket
lip
protrusion
thickness direction
plane
Prior art date
Application number
PCT/JP2014/073613
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French (fr)
Japanese (ja)
Inventor
洪文 山田
Original Assignee
Nok株式会社
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Publication date
Application filed by Nok株式会社 filed Critical Nok株式会社
Publication of WO2015060025A1 publication Critical patent/WO2015060025A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
    • F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
    • F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
    • F16J15/025—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with at least one flexible lip
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal

Definitions

  • the present invention relates to a gasket related to sealing technology.
  • the gasket of the present invention is used, for example, in the field related to automobiles, or in the field related to auxiliary equipment.
  • an inner lip 61 and an outer lip 62 are provided side by side on one surface in the thickness direction (lower surface in the figure) and the other in the thickness direction.
  • a gasket made of a single rubber formed with a flat surface 63 as a surface see Patent Document 1 or 2.
  • This gasket is used, for example, in a connector connection part that directly fits a connector fixed to the case of one electronic device and a connector fixed to the case of the other electronic device, and foreign matter such as muddy water and dust outside the connection part. Provides a sealing function so that does not enter the inside of the connection.
  • the other surface in the thickness direction is formed as a planar surface 63 as described above, and the other surface in the thickness direction formed as the planar surface 63 is on the plane (not shown) of the mating case. Since the sealing surfaces are in contact with each other, the sealing surface pressure may be insufficient depending on how the cases are tightened, and the sealing function may not be sufficiently achieved.
  • the present invention can increase the seal surface pressure and suppress an increase in gasket reaction force, thereby improving the sealing performance and suppressing deformation of the counterpart case. It is an object to provide a gasket that can be used.
  • a gasket according to claim 1 of the present invention is a rubber unit gasket that is mounted between two opposing members and seals between the two members, and has an inner lip on one surface in the thickness direction.
  • the outer lip is provided side by side and a recess is provided in the center in the width direction of the other surface in the thickness direction, an inner protrusion and an outer protrusion are provided on both sides of the recess, and the tip of the inner lip and the tip of the inner protrusion are on a plane. It is arranged at a position shifted from each other, and the distal end portion of the outer lip and the distal end portion of the outer projection are also arranged at positions shifted from each other on a plane.
  • the gasket according to claim 2 of the present invention is the gasket according to claim 1, wherein the inner lip has a tapered portion on a side surface thereof, and the inner protrusion has a straight portion connected to the tapered portion on a side surface thereof. Accordingly, the front end portion of the inner protrusion is disposed on the inner side of the gasket from the front end portion of the inner lip, the outer lip has a tapered portion on its side surface, and the outer protrusion has a straight portion connected to the tapered portion on the side surface.
  • the distal end portion of the outer protrusion is disposed outside the gasket from the distal end portion of the outer lip, and the cross-sectional shape of the gasket is asymmetric in the gasket thickness direction.
  • the gasket according to claim 3 of the present invention is the gasket according to claim 1 or 2, wherein the gasket is used for a connector connecting portion of an electronic device.
  • the other surface in the thickness direction is a seal surface that contacts the mating case, and the other surface in the thickness direction is not formed flat, but the other surface in the thickness direction.
  • a recess is provided in the center of the surface in the width direction, and an inner protrusion and an outer protrusion are provided on both sides of the recess, so that the other surface in the thickness direction is three-dimensional.
  • an inner lip and an outer lip are provided side by side on one surface in the thickness direction, and the tip of the inner lip and the tip of the inner protrusion are arranged at positions shifted from each other on the plane.
  • the tips of the protrusions are also arranged at positions shifted from each other on the plane.
  • the seal surface pressure can be increased.
  • the inner lip and the inner protrusion at positions shifted on the plane, provide a tapered portion on the side surface of the inner lip and a straight portion connected to the tapered portion on the side surface of the inner protrusion to place the inner lip and the inner protrusion on the plane.
  • a tapered portion is provided on the side surface of the outer lip and the straight portion connected to the tapered portion on the side surface of the outer protrusion. It is preferable to displace the outer lip and the outer protrusion on a plane by providing, and according to these, the cross-sectional shape of the gasket is asymmetrical in the thickness direction of the gasket. It is possible to acquire.
  • the gasket of the present invention is suitable for use in a connector connecting portion of an electronic device, and thereby it is possible to prevent foreign matters such as muddy water and dust outside the connecting portion from entering the inside of the connecting portion.
  • this application is not limited.
  • the present invention has the following effects.
  • the other surface in the thickness direction of the gasket is a seal surface that contacts the mating case, and a recess is provided on the other surface in the thickness direction, and the inner protrusion and the outer protrusion on both sides of the recess.
  • the other surface in the thickness direction is three-dimensional.
  • an inner lip and an outer lip are provided side by side on one surface in the thickness direction, the inner lip and the inner protrusion are arranged at positions shifted on the plane, and the outer lip and the outer protrusion are also arranged at positions shifted on the plane. .
  • the gasket is not so large even when compressed in the thickness direction. Does not generate reaction force.
  • the inner protrusion and the outer protrusion are in close contact with the mating case with a limited area, the seal surface pressure can be increased. Therefore, according to the intended purpose of the present invention, it is possible to provide a gasket capable of increasing the seal surface pressure and suppressing the gasket reaction force from increasing, thereby improving the sealing performance and suppressing deformation of the counterpart case. Can do.
  • FIG. 2A is an explanatory diagram related to a comparative example sample
  • FIG. 2B is an explanatory diagram related to an example sample.
  • the present invention includes the following embodiments. (1) Compared to a conventional gasket having a flat upper surface (seal surface), the upper surface side is changed to a lip shape that is asymmetrical with a concave shape on the upper surface side. Thereby, it becomes possible to suppress the reaction force and increase the crushing margin, and the effect of increasing the surface pressure (sealability) of the upper surface protrusion can be obtained. (2) Since the points on which the force is applied are shifted on the upper and lower surfaces of the gasket, the reaction force can be suppressed even if the crushing margin is increased, and a high surface pressure can be obtained. (3) Further, since the lip collapse direction is stabilized during compression, the reliability of the seal is high.
  • FIG. 1 shows a cross section of the main part of a gasket 1 according to an embodiment of the present invention.
  • the gasket 1 according to this embodiment is a single rubber (rubber-like elastic body) gasket that is mounted between two opposing members 51 and 52 and seals between the two members 51 and 52.
  • One surface in the thickness direction (lower surface in the drawing) closely contacting the groove bottom surface 53a of the mounting groove 53 provided in the upper surface and the other surface in the thickness direction (upper surface in the drawing) contacting the flat surface 54 of the other member 52 are provided.
  • the gasket 1 according to the embodiment is used, for example, in a connector connecting portion that fits a connector fixed to the case of one electronic device and a connector fixed to the case of the other electronic device.
  • the case of one electronic device corresponds to the one member 51.
  • the other electronic device case corresponds to the other member 52.
  • the left side of the gasket 1 is outside the gasket 1 and outside the connecting portion, and the right side of the gasket 1 is inside the gasket and inside the connecting portion.
  • the gasket 1 has one surface in the thickness direction as described above, and the inner lip 2 and the outer lip 3 are provided side by side on the one surface in the thickness direction.
  • the gasket 1 has the other surface in the thickness direction as described above, and a recess 4 is provided at the center in the width direction of the other surface in the thickness direction, and the inner protrusion 5 and the outer protrusion 6 are formed on both sides of the recess 4. Is provided.
  • the inner lip 2 and the outer lip 3 are each formed in a cross-sectional mountain shape or a cross-sectional triangle shape, and have tip portions 2a and 3a having a circular arc shape in cross section.
  • the inner protrusion 5 and the outer protrusion 6 are each formed in a cross-sectional mountain shape or a triangular shape, and have end portions 5a and 6a having a circular arc shape in cross section.
  • the front end portion 2a of the inner lip 2 and the front end portion 5a of the inner protrusion 5 are arranged at positions shifted from each other on the plane, and the front end portion 3a of the outer lip 3 and the front end portion 6a of the outer protrusion 6 are also shifted from each other on the plane. Is arranged.
  • the inner lip 2 is provided with a tapered portion 7 on its side surface, and the inner protrusion 5 is provided with a straight portion 8 connected to the tapered portion 7 on its side surface, whereby the tip portion 5a of the inner protrusion 5 is the tip portion 2a of the inner lip 2.
  • the taper portion 7 is disposed on the inner side of the gasket 1 by an amount corresponding to the gradient.
  • the outer lip 3 has a tapered portion 9 on its side surface
  • the outer protrusion 6 has a straight portion 10 connected to the tapered portion 9 on its side surface, so that the distal end portion 6 a of the outer protrusion 6 becomes the distal end of the outer lip 3.
  • a portion corresponding to the gradient of the tapered portion 9 from the portion 3a is disposed outside the gasket 1.
  • the cross-sectional shape of the gasket 1 is asymmetric in the gasket thickness direction. Moreover, the cross-sectional shape of the gasket 1 is a symmetrical shape in the gasket width direction.
  • the other surface in the thickness direction is a sealing surface that comes into contact with the mating case (the other member 52), and the other surface in the thickness direction is a flat surface as in the prior art.
  • an inner lip 2 and an outer lip 3 are provided side by side on one surface in the thickness direction, and the distal end 2a of the inner lip 2 and the distal end 5a of the inner projection 5 are arranged at positions shifted from each other on the plane.
  • the tip 3a of the lip 3 and the tip 6a of the outer protrusion 6 are also arranged at positions shifted from each other on the plane. Accordingly, since the inner lip 2 and the inner protrusion 5 are arranged at positions shifted on the plane and the outer lip 3 and the outer protrusion 6 are also arranged at positions shifted on the plane as described above, the gasket 1 is arranged in the thickness direction. Even when compressed, it does not generate a large reaction force.
  • a comparative example sample and an example sample according to the present invention were manufactured, and FEM analysis and the like were performed.
  • the comparative sample has a cross-sectional shape shown in the left diagram of FIG. 2A, that is, an inner lip and an outer lip are provided side by side on one surface in the thickness direction (lower surface in the figure) and the other surface in the thickness direction (FIG.
  • the upper surface) is formed as a planar surface.
  • the example sample has the cross-sectional shape shown in the left diagram of FIG. 2B, that is, the cross-sectional shape described in the above-described example (FIG. 1).
  • the cross-sectional shape shown in the left diagram of FIG. 2B that is, the cross-sectional shape described in the above-described example (FIG. 1).
  • stress is dispersed as shown in the lower right diagram of FIG. 2 (B), and an increase in reaction force can be suppressed, and as shown in the upper right diagram of FIG. 2 (B).
  • the peak value of the seal surface pressure becomes relatively large.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

Provided is a gasket with which the sealing surface pressure can be increased and an increase in the gasket reaction force can be prevented, thereby improving the sealing performance and reducing deformation of a counterpart case. This rubber gasket is formed as a single body and is mounted between two opposing members to form a seal between the two members, with one surface of the gasket in the thickness direction being provided with an inside lip and an outside lip, which are side by side, and the other surface of the gasket in the thickness direction being provided with a recess in the center in the width direction of that surface, with an inside protrusion and an outside protrusion being provided respectively on one side and the other side of the recess. The tip part of the inside lip and the tip part of the inside protrusion are arranged at positions offset from one another in a plane, and the tip part of the outside lip and the tip part of the outside protrusion are arranged at positions offset from one another in a plane.

Description

ガスケットgasket
　本発明は、シール技術に係るガスケットに関する。本発明のガスケットは例えば、自動車関連の分野で用いられ、またはその補機に関連する分野などで用いられる。 The present invention relates to a gasket related to sealing technology. The gasket of the present invention is used, for example, in the field related to automobiles, or in the field related to auxiliary equipment.
　従来から自動車等車両における電子機器のコネクタ接続部に用いられるガスケットとして図３に示すように、その厚み方向一方の面（図では下面）に内側リップ６１および外側リップ６２を並べて設けるとともに厚み方向他方の面を平面状の面６３として形成したラバー単体よりなるガスケットが知られている（特許文献１または２参照）。 Conventionally, as shown in FIG. 3 as a gasket used for a connector connecting portion of an electronic device in a vehicle such as an automobile, an inner lip 61 and an outer lip 62 are provided side by side on one surface in the thickness direction (lower surface in the figure) and the other in the thickness direction. There is known a gasket made of a single rubber formed with a flat surface 63 as a surface (see Patent Document 1 or 2).
　このガスケットは例えば一方の電子機器のケースに固定されたコネクタと他方の電子機器のケースに固定されたコネクタとを直接嵌合するコネクタ接続部に用いられ、接続部外部の泥水やダスト等の異物が接続部内部へ侵入することがないようにシール機能を発揮する。 This gasket is used, for example, in a connector connection part that directly fits a connector fixed to the case of one electronic device and a connector fixed to the case of the other electronic device, and foreign matter such as muddy water and dust outside the connection part. Provides a sealing function so that does not enter the inside of the connection.
　しかしながらこのガスケットでは、上記したように厚み方向他方の面が平面状の面６３として形成され、この平面状の面６３として形成された厚み方向他方の面が相手ケースの平面（図示せず）に接触するシール面とされるため、ケース同士の締付具合などによっては、シール面圧が不足し、シール機能が十分に果たされないことがある。 However, in this gasket, the other surface in the thickness direction is formed as a planar surface 63 as described above, and the other surface in the thickness direction formed as the planar surface 63 is on the plane (not shown) of the mating case. Since the sealing surfaces are in contact with each other, the sealing surface pressure may be insufficient depending on how the cases are tightened, and the sealing function may not be sufficiently achieved.
　この点につき、シール面圧を高めるには、シール面にリップを追加してガスケットのつぶし代を増大させることが有効であるが、このようにシール面にリップを追加してつぶし代を増大させると、ガスケットの断面形状が厚み方向に対称な形状となって、つぶし時に生じるガスケット反力が増大するため、相手ケース（樹脂製であることが多い）側に変形が生じ、却ってシール性が低下してしまうことがある。 In this regard, in order to increase the seal surface pressure, it is effective to add a lip to the seal surface to increase the crushing margin of the gasket. In this way, adding a lip to the seal surface increases the crushing margin. And the cross-sectional shape of the gasket becomes symmetrical in the thickness direction, and the gasket reaction force generated during crushing increases, so deformation occurs on the mating case (often made of resin) side, and the sealing performance decreases May end up.
特開２０１１－０２３２９０号公報JP 2011-023290 A 特開２０１２－１９９０５１号公報JP 2012-199051 A
　本発明は以上の点に鑑みて、シール面圧を高めることができ、しかもガスケット反力が増大するのを抑制することができ、もってシール性を向上させるとともに相手ケースの変形を抑制することができるガスケットを提供することを目的とする。 In view of the above points, the present invention can increase the seal surface pressure and suppress an increase in gasket reaction force, thereby improving the sealing performance and suppressing deformation of the counterpart case. It is an object to provide a gasket that can be used.
　上記目的を達成するため、本発明の請求項１によるガスケットは、互いに対向する二部材間に装着されて前記二部材間をシールするラバー単体のガスケットであって、厚み方向一方の面に内側リップおよび外側リップを並べて設けるとともに厚み方向他方の面の幅方向中央に凹みを設けて前記凹みの両側に内側突起および外側突起を設け、前記内側リップの先端部および前記内側突起の先端部を平面上互いにずれた位置に配置し、前記外側リップの先端部および前記外側突起の先端部をこれも平面上互いにずれた位置に配置したことを特徴とする。 In order to achieve the above object, a gasket according to claim 1 of the present invention is a rubber unit gasket that is mounted between two opposing members and seals between the two members, and has an inner lip on one surface in the thickness direction. In addition, the outer lip is provided side by side and a recess is provided in the center in the width direction of the other surface in the thickness direction, an inner protrusion and an outer protrusion are provided on both sides of the recess, and the tip of the inner lip and the tip of the inner protrusion are on a plane. It is arranged at a position shifted from each other, and the distal end portion of the outer lip and the distal end portion of the outer projection are also arranged at positions shifted from each other on a plane.
　また、本発明の請求項２によるガスケットは、上記した請求項１記載のガスケットにおいて、前記内側リップはその側面にテーパー部を備えるとともに前記内側突起はその側面に前記テーパー部に連なるストレート部を備えることにより前記内側突起の先端部は前記内側リップの先端部より当該ガスケットの内側に配置され、前記外側リップはその側面にテーパー部を備えるとともに前記外側突起はその側面に前記テーパー部に連なるストレート部を備えることにより前記外側突起の先端部は前記外側リップの先端部より当該ガスケットの外側に配置され、当該ガスケットの断面形状はガスケット厚み方向に非対称形状とされていることを特徴とする。 The gasket according to claim 2 of the present invention is the gasket according to claim 1, wherein the inner lip has a tapered portion on a side surface thereof, and the inner protrusion has a straight portion connected to the tapered portion on a side surface thereof. Accordingly, the front end portion of the inner protrusion is disposed on the inner side of the gasket from the front end portion of the inner lip, the outer lip has a tapered portion on its side surface, and the outer protrusion has a straight portion connected to the tapered portion on the side surface. The distal end portion of the outer protrusion is disposed outside the gasket from the distal end portion of the outer lip, and the cross-sectional shape of the gasket is asymmetric in the gasket thickness direction.
　また、本発明の請求項３によるガスケットは、上記した請求項１または２記載のガスケットにおいて、当該ガスケットは電子機器のコネクタ接続部に用いられることを特徴とする。 The gasket according to claim 3 of the present invention is the gasket according to claim 1 or 2, wherein the gasket is used for a connector connecting portion of an electronic device.
　上記構成を備える本発明のガスケットにおいては、その厚み方向他方の面が相手ケースに接触するシール面とされ、この厚み方向他方の面が平面状に形成されるのではなく、この厚み方向他方の面の幅方向中央に凹みが設けられるとともに凹みの両側に内側突起および外側突起が設けられることにより、この厚み方向他方の面が立体化されている。一方、厚み方向一方の面には内側リップおよび外側リップが並べて設けられており、内側リップの先端部および内側突起の先端部は平面上互いにずれた位置に配置され、外側リップの先端部および外側突起の先端部はこれも平面上互いにずれた位置に配置されている。したがってこのように内側リップおよび内側突起が平面上ずれた位置に配置されるとともに外側リップおよび外側突起がこれも平面上ずれた位置に配置されているため、ガスケットは厚み方向に圧縮されても、それほど大きな反力を発生することがない。 In the gasket of the present invention having the above-described configuration, the other surface in the thickness direction is a seal surface that contacts the mating case, and the other surface in the thickness direction is not formed flat, but the other surface in the thickness direction. A recess is provided in the center of the surface in the width direction, and an inner protrusion and an outer protrusion are provided on both sides of the recess, so that the other surface in the thickness direction is three-dimensional. On the other hand, an inner lip and an outer lip are provided side by side on one surface in the thickness direction, and the tip of the inner lip and the tip of the inner protrusion are arranged at positions shifted from each other on the plane. The tips of the protrusions are also arranged at positions shifted from each other on the plane. Therefore, since the inner lip and the inner protrusion are arranged at positions shifted on the plane and the outer lip and the outer protrusion are also arranged at positions shifted on the plane in this way, even if the gasket is compressed in the thickness direction, It does not generate such a large reaction force.
　またその一方で、内側突起および外側突起がそれぞれ、限られた面積で相手ケースに密接するため、シール面圧を高めることが可能とされる。 On the other hand, since the inner protrusion and the outer protrusion are in close contact with the mating case in a limited area, the seal surface pressure can be increased.
　内側リップおよび内側突起を平面上ずれた位置に配置するには、内側リップの側面にテーパー部を設けるとともに内側突起の側面にテーパー部に連なるストレート部を設けることにより内側リップおよび内側突起を平面上ずらすのが好適であり、また同様に、外側リップおよび外側突起を平面上互いにずれた位置に配置するには、外側リップの側面にテーパー部を設けるとともに外側突起の側面にテーパー部に連なるストレート部を設けることにより外側リップおよび外側突起を平面上ずらすのが好適であり、これらによれば、ガスケットの断面形状がガスケット厚み方向に非対称な形状とされるため、上記した反力増大抑制の効果を獲得することが可能とされる。 To arrange the inner lip and the inner protrusion at positions shifted on the plane, provide a tapered portion on the side surface of the inner lip and a straight portion connected to the tapered portion on the side surface of the inner protrusion to place the inner lip and the inner protrusion on the plane. Similarly, in order to arrange the outer lip and the outer protrusion at positions shifted from each other on the plane, similarly, a tapered portion is provided on the side surface of the outer lip and the straight portion connected to the tapered portion on the side surface of the outer protrusion. It is preferable to displace the outer lip and the outer protrusion on a plane by providing, and according to these, the cross-sectional shape of the gasket is asymmetrical in the thickness direction of the gasket. It is possible to acquire.
　また、本発明のガスケットは、電子機器のコネクタ接続部に用いられるのに適しており、これにより接続部外部の泥水やダスト等の異物が接続部内部へ侵入するのを抑制することが可能される。但し、この用途は限定的なものではない。 In addition, the gasket of the present invention is suitable for use in a connector connecting portion of an electronic device, and thereby it is possible to prevent foreign matters such as muddy water and dust outside the connecting portion from entering the inside of the connecting portion. The However, this application is not limited.
　本発明は、以下の効果を奏する。 The present invention has the following effects.
　すなわち、本発明においては以上説明したように、ガスケットの厚み方向他方の面が相手ケースに接触するシール面とされ、この厚み方向他方の面に凹みが設けられ凹みの両側に内側突起および外側突起が設けられることにより、厚み方向他方の面が立体化されている。一方、厚み方向一方の面には内側リップおよび外側リップが並べて設けられ、内側リップおよび内側突起は平面上ずれた位置に配置され、外側リップおよび外側突起も平面上ずれた位置に配置されている。したがってこのように内側リップおよび内側突起が平面上ずれた位置に配置されるとともに外側リップおよび外側突起も平面上ずれた位置に配置されているため、ガスケットは厚み方向に圧縮されても、それほど大きな反力を発生しない。また内側突起および外側突起がそれぞれ、限られた面積で相手ケースに密接するため、シール面圧を高めることが可能とされている。したがってこれらにより本発明所期の目的どおり、シール面圧を高め、ガスケット反力が増大するのを抑制し、もってシール性を向上させるとともに相手ケースの変形を抑制することができるガスケットを提供することができる。 That is, in the present invention, as described above, the other surface in the thickness direction of the gasket is a seal surface that contacts the mating case, and a recess is provided on the other surface in the thickness direction, and the inner protrusion and the outer protrusion on both sides of the recess. Is provided, the other surface in the thickness direction is three-dimensional. On the other hand, an inner lip and an outer lip are provided side by side on one surface in the thickness direction, the inner lip and the inner protrusion are arranged at positions shifted on the plane, and the outer lip and the outer protrusion are also arranged at positions shifted on the plane. . Therefore, since the inner lip and the inner protrusion are arranged at positions shifted on the plane and the outer lip and the outer protrusion are also arranged at positions shifted on the plane, the gasket is not so large even when compressed in the thickness direction. Does not generate reaction force. In addition, since the inner protrusion and the outer protrusion are in close contact with the mating case with a limited area, the seal surface pressure can be increased. Therefore, according to the intended purpose of the present invention, it is possible to provide a gasket capable of increasing the seal surface pressure and suppressing the gasket reaction force from increasing, thereby improving the sealing performance and suppressing deformation of the counterpart case. Can do.
本発明の実施例に係るガスケットの要部断面図Sectional drawing of the principal part of the gasket which concerns on the Example of this invention 比較試験の説明図で、図２（Ａ）は比較例サンプルに係る説明図、図２（Ｂ）は実施例サンプルに係る説明図FIG. 2A is an explanatory diagram related to a comparative example sample, and FIG. 2B is an explanatory diagram related to an example sample. 従来例に係るガスケットの要部断面図Cross-sectional view of the main part of the gasket according to the conventional example
　本発明には、以下の実施形態が含まれる。
（１）上面（シール面）を平面状とした従来ガスケットに対し、上面側を凹み形状として上下非対称のリップ形状に変更する。これにより、反力を抑えてつぶし代を増やすことが可能となり、上面突起部の面圧（シール性）アップの効果が得られる。
（２）ガスケット上面および下面で力のかかる点がずれているので、つぶし代を大きくしても反力を抑えられ、高い面圧も得られるので、シール性に優れる。
（３）また、圧縮時、リップの倒れ方向が安定化するので、シールの信頼性も高い。
（４）圧縮時、リップの横方向に応力が生じるので、溝側面に接触したストレート部を押し付ける力がかかり、面接触部のシール性を向上させることができる。
（５）本発明によれば、面圧・シール性アップ、反力低減、充填率低減、圧縮割れ性向上に係る効果が得られる。 The present invention includes the following embodiments.
(1) Compared to a conventional gasket having a flat upper surface (seal surface), the upper surface side is changed to a lip shape that is asymmetrical with a concave shape on the upper surface side. Thereby, it becomes possible to suppress the reaction force and increase the crushing margin, and the effect of increasing the surface pressure (sealability) of the upper surface protrusion can be obtained.
(2) Since the points on which the force is applied are shifted on the upper and lower surfaces of the gasket, the reaction force can be suppressed even if the crushing margin is increased, and a high surface pressure can be obtained.
(3) Further, since the lip collapse direction is stabilized during compression, the reliability of the seal is high.
(4) Since a stress is generated in the lateral direction of the lip during compression, a force is applied to press the straight portion in contact with the side surface of the groove, and the sealability of the surface contact portion can be improved.
(5) According to the present invention, it is possible to obtain the effects of increasing the surface pressure and sealing properties, reducing the reaction force, reducing the filling rate, and improving compression cracking properties.
　つぎに本発明の実施例を図面にしたがって説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
　図１は、本発明の実施例に係るガスケット１の要部断面を示している。当該実施例に係るガスケット１は、互いに対向する二部材５１，５２間に装着されて前記二部材５１，５２間をシールするラバー（ゴム状弾性体）単体のガスケットであって、一方の部材５１に設けた装着溝５３の溝底面５３ａに密接する厚み方向一方の面（図では下面）と、他方の部材５２の平面５４に密接する厚み方向他方の面（図では上面）とを有している。また当該実施例に係るガスケット１は例えば、一方の電子機器のケースに固定されたコネクタと他方の電子機器のケースに固定されたコネクタとを嵌合するコネクタ接続部に用いられ、接続部外部の泥水やダスト等の異物が接続部内部へ侵入することがないようにシール機能を発揮するものであって、この場合、一方の電子機器のケース（装着側ケース）が上記一方の部材５１に相当し、他方の電子機器のケース（相手ケース）が上記他方の部材５２に相当する。図１では、ガスケット１の左側がガスケット１の外側であって接続部外部とされ、ガスケット１の右側がガスケットの内側であって接続部内部とされる。 FIG. 1 shows a cross section of the main part of a gasket 1 according to an embodiment of the present invention. The gasket 1 according to this embodiment is a single rubber (rubber-like elastic body) gasket that is mounted between two opposing members 51 and 52 and seals between the two members 51 and 52. One surface in the thickness direction (lower surface in the drawing) closely contacting the groove bottom surface 53a of the mounting groove 53 provided in the upper surface and the other surface in the thickness direction (upper surface in the drawing) contacting the flat surface 54 of the other member 52 are provided. Yes. The gasket 1 according to the embodiment is used, for example, in a connector connecting portion that fits a connector fixed to the case of one electronic device and a connector fixed to the case of the other electronic device. It exhibits a sealing function so that foreign matter such as muddy water and dust does not enter the inside of the connection part. In this case, the case of one electronic device (mounting side case) corresponds to the one member 51. The other electronic device case (partner case) corresponds to the other member 52. In FIG. 1, the left side of the gasket 1 is outside the gasket 1 and outside the connecting portion, and the right side of the gasket 1 is inside the gasket and inside the connecting portion.
　ガスケット１は、上記したように厚み方向一方の面を有し、この厚み方向一方の面に内側リップ２および外側リップ３が並べて設けられている。 The gasket 1 has one surface in the thickness direction as described above, and the inner lip 2 and the outer lip 3 are provided side by side on the one surface in the thickness direction.
　また、ガスケット１は、上記したように厚み方向他方の面を有し、この厚み方向他方の面の幅方向中央に凹み４が設けられ、この凹み４の両側に内側突起５および外側突起６が設けられている。 Further, the gasket 1 has the other surface in the thickness direction as described above, and a recess 4 is provided at the center in the width direction of the other surface in the thickness direction, and the inner protrusion 5 and the outer protrusion 6 are formed on both sides of the recess 4. Is provided.
　内側リップ２および外側リップ３はそれぞれ断面山形ないし断面三角形に形成されるとともに、断面円弧形の先端部２ａ，３ａを有している。 The inner lip 2 and the outer lip 3 are each formed in a cross-sectional mountain shape or a cross-sectional triangle shape, and have tip portions 2a and 3a having a circular arc shape in cross section.
　内側突起５および外側突起６はこれもそれぞれ断面山形ないし断面三角形に形成され、断面円弧形の先端部５ａ，６ａを有している。 The inner protrusion 5 and the outer protrusion 6 are each formed in a cross-sectional mountain shape or a triangular shape, and have end portions 5a and 6a having a circular arc shape in cross section.
　内側リップ２の先端部２ａおよび内側突起５の先端部５ａは平面上互いにずれた位置に配置され、外側リップ３の先端部３ａおよび外側突起６の先端部６ａはこれも平面上互いにずれた位置に配置されている。 The front end portion 2a of the inner lip 2 and the front end portion 5a of the inner protrusion 5 are arranged at positions shifted from each other on the plane, and the front end portion 3a of the outer lip 3 and the front end portion 6a of the outer protrusion 6 are also shifted from each other on the plane. Is arranged.
　また、内側リップ２はその側面にテーパー部７を備えるとともに内側突起５はその側面にテーパー部７に連なるストレート部８を備え、これにより内側突起５の先端部５ａは内側リップ２の先端部２ａよりテーパー部７の勾配分、ガスケット１の内側に配置されている。 The inner lip 2 is provided with a tapered portion 7 on its side surface, and the inner protrusion 5 is provided with a straight portion 8 connected to the tapered portion 7 on its side surface, whereby the tip portion 5a of the inner protrusion 5 is the tip portion 2a of the inner lip 2. The taper portion 7 is disposed on the inner side of the gasket 1 by an amount corresponding to the gradient.
　また同様に、外側リップ３はその側面にテーパー部９を備えるとともに外側突起６はその側面にテーパー部９に連なるストレート部１０を備え、これにより外側突起６の先端部６ａは外側リップ３の先端部３ａよりテーパー部９の勾配分、ガスケット１の外側に配置されている。 Similarly, the outer lip 3 has a tapered portion 9 on its side surface, and the outer protrusion 6 has a straight portion 10 connected to the tapered portion 9 on its side surface, so that the distal end portion 6 a of the outer protrusion 6 becomes the distal end of the outer lip 3. A portion corresponding to the gradient of the tapered portion 9 from the portion 3a is disposed outside the gasket 1.
　また、ガスケット１の断面形状は、ガスケット厚み方向に非対称な形状とされている。また、ガスケット１の断面形状は、ガスケット幅方向に対称な形状とされている。 The cross-sectional shape of the gasket 1 is asymmetric in the gasket thickness direction. Moreover, the cross-sectional shape of the gasket 1 is a symmetrical shape in the gasket width direction.
　上記構成を備えるガスケット１においては、その厚み方向他方の面が相手ケース（他方の部材５２）に対し接触するシール面とされ、この厚み方向他方の面が上記先行技術のように平面状の面として形成されるのではなく、この厚み方向他方の面に凹み４が設けられるとともに凹み４の両側に内側突起５および外側突起６が設けられて、厚み方向他方の面が立体化されている。一方、厚み方向一方の面には内側リップ２および外側リップ３が並べて設けられており、内側リップ２の先端部２ａおよび内側突起５の先端部５ａは平面上互いにずれた位置に配置され、外側リップ３の先端部３ａおよび外側突起６の先端部６ａはこれも平面上互いにずれた位置に配置されている。したがってこのように内側リップ２および内側突起５が平面上ずれた位置に配置されるとともに外側リップ３および外側突起６がこれも平面上ずれた位置に配置されているため、ガスケット１は厚み方向に圧縮されても、それほど大きな反力を発生しない。 In the gasket 1 having the above-described configuration, the other surface in the thickness direction is a sealing surface that comes into contact with the mating case (the other member 52), and the other surface in the thickness direction is a flat surface as in the prior art. Is formed on the other surface in the thickness direction, and the inner protrusion 5 and the outer protrusion 6 are provided on both sides of the recess 4 so that the other surface in the thickness direction is three-dimensional. On the other hand, an inner lip 2 and an outer lip 3 are provided side by side on one surface in the thickness direction, and the distal end 2a of the inner lip 2 and the distal end 5a of the inner projection 5 are arranged at positions shifted from each other on the plane. The tip 3a of the lip 3 and the tip 6a of the outer protrusion 6 are also arranged at positions shifted from each other on the plane. Accordingly, since the inner lip 2 and the inner protrusion 5 are arranged at positions shifted on the plane and the outer lip 3 and the outer protrusion 6 are also arranged at positions shifted on the plane as described above, the gasket 1 is arranged in the thickness direction. Even when compressed, it does not generate a large reaction force.
　またその一方で、内側突起５および外側突起６がそれぞれ、その先端部５ａ，６ａにおける限られた面積で相手ケースに密接するため、シール面圧を高めることが可能とされている。 On the other hand, since the inner protrusion 5 and the outer protrusion 6 are in close contact with the mating case with limited areas at the tip portions 5a and 6a, it is possible to increase the seal surface pressure.
　これらの点に関し、本願発明者らは、上記作用効果を確認するため、比較試験を実施したので、以下にその内容および結果について説明する。 Regarding these points, the inventors of the present application conducted a comparative test in order to confirm the above-described effects, and the contents and results will be described below.
　比較試験は、比較例サンプルおよび本発明に係る実施例サンプルを製作し、ＦＥＭ解析などを実施した。 In the comparative test, a comparative example sample and an example sample according to the present invention were manufactured, and FEM analysis and the like were performed.
　比較例サンプルは、図２（Ａ）の左図に示す断面形状を有し、すなわち厚み方向一方の面（図では下面）に内側リップおよび外側リップが並べて設けられるとともに厚み方向他方の面（図では上面）が平面状の面として形成されている。このような形状であると、図２（Ａ）の右下図に示すようにリップ２，３の根元部近傍にて比較的大きな応力集中が発生し、大きな反力が発生しやすく、また、図２（Ａ）の右上図に示すようにシール面圧のピーク値が比較的小さい。 The comparative sample has a cross-sectional shape shown in the left diagram of FIG. 2A, that is, an inner lip and an outer lip are provided side by side on one surface in the thickness direction (lower surface in the figure) and the other surface in the thickness direction (FIG. The upper surface) is formed as a planar surface. With such a shape, as shown in the lower right diagram of FIG. 2 (A), a relatively large stress concentration occurs near the roots of the lips 2 and 3, and a large reaction force is likely to occur. As shown in the upper right diagram of 2 (A), the peak value of the seal surface pressure is relatively small.
　これに対し、実施例サンプルは、図２（Ｂ）の左図に示す断面形状を有し、すなわち上記実施例（図１）で説明した断面形状を有している。このような形状であると、図２（Ｂ）の右下図に示すように応力が分散し、反力の増大を抑制することができ、また、図２（Ｂ）の右上図に示すようにシール面圧のピーク値が比較的大きくなる。 In contrast, the example sample has the cross-sectional shape shown in the left diagram of FIG. 2B, that is, the cross-sectional shape described in the above-described example (FIG. 1). With such a shape, stress is dispersed as shown in the lower right diagram of FIG. 2 (B), and an increase in reaction force can be suppressed, and as shown in the upper right diagram of FIG. 2 (B). The peak value of the seal surface pressure becomes relatively large.
　したがって、シール面圧を高めることができ、しかもガスケット反力が増大するのを抑制することができることを確認することができた。 Therefore, it was confirmed that the seal surface pressure could be increased and the gasket reaction force could be suppressed from increasing.
　１　ガスケット
　２　内側リップ
　２ａ，３ａ，５ａ，６ａ　先端部
　３　外側リップ
　４　凹み
　５　内側突起
　６　外側突起
　７，９　テーパー部
　８，１０　ストレート部
　５１　一方の部材
　５２　他方の部材
　５３　装着溝
　５３ａ溝底面
　５４　平面 DESCRIPTION OF SYMBOLS 1 Gasket 2 Inner lip 2a, 3a, 5a, 6a Tip part 3 Outer lip 4 Depression 5 Inner protrusion 6 Outer protrusion 7, 9 Tapered part 8, 10 Straight part 51 One member 52 Other member 53 Mounting groove 53a groove bottom face 54 Plane

Claims (3)

  1. 　互いに対向する二部材間に装着されて前記二部材間をシールするラバー単体のガスケットであって、
    厚み方向一方の面に内側リップおよび外側リップを並べて設けるとともに厚み方向他方の面の幅方向中央に凹みを設けて前記凹みの両側に内側突起および外側突起を設け、
    前記内側リップの先端部および前記内側突起の先端部を平面上互いにずれた位置に配置し、
    前記外側リップの先端部および前記外側突起の先端部をこれも平面上互いにずれた位置に配置したことを特徴とするガスケット。     A rubber single-piece gasket that is mounted between two members facing each other and seals between the two members,
    An inner lip and an outer lip are provided side by side on one surface in the thickness direction, and a recess is provided in the center in the width direction of the other surface in the thickness direction, and an inner protrusion and an outer protrusion are provided on both sides of the recess,
    The tip of the inner lip and the tip of the inner protrusion are arranged at positions shifted from each other on a plane,
    A gasket characterized in that the tip of the outer lip and the tip of the outer protrusion are arranged at positions shifted from each other on a plane.
  2. 　請求項１記載のガスケットにおいて、
    前記内側リップはその側面にテーパー部を備えるとともに前記内側突起はその側面に前記テーパー部に連なるストレート部を備えることにより前記内側突起の先端部は前記内側リップの先端部より当該ガスケットの内側に配置され、
    前記外側リップはその側面にテーパー部を備えるとともに前記外側突起はその側面に前記テーパー部に連なるストレート部を備えることにより前記外側突起の先端部は前記外側リップの先端部より当該ガスケットの外側に配置され、
    当該ガスケットの断面形状はガスケット厚み方向に非対称形状とされていることを特徴とするガスケット。     The gasket according to claim 1,
    The inner lip has a tapered portion on its side surface, and the inner protrusion has a straight portion connected to the tapered portion on its side surface, so that the distal end portion of the inner protrusion is disposed inside the gasket from the distal end portion of the inner lip. And
    The outer lip has a tapered portion on its side surface, and the outer protrusion has a straight portion connected to the tapered portion on its side surface, so that the distal end portion of the outer protrusion is disposed outside the gasket from the distal end portion of the outer lip. And
    A gasket characterized in that the cross-sectional shape of the gasket is asymmetric in the thickness direction of the gasket.
  3. 　請求項１または２記載のガスケットにおいて、
    当該ガスケットは電子機器のコネクタ接続部に用いられることを特徴とするガスケット。     The gasket according to claim 1 or 2,
    The said gasket is used for the connector connection part of an electronic device, The gasket characterized by the above-mentioned.
PCT/JP2014/073613 2013-10-22 2014-09-08 Gasket WO2015060025A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4350179A1 (en) * 2022-10-04 2024-04-10 Tyco Electronics Japan G.K. Sealing element and connector assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002295683A (en) * 2001-03-28 2002-10-09 Nok Corp Seal for dovetail groove
JP2004180824A (en) * 2002-12-02 2004-07-02 Pegasus Sewing Mach Mfg Co Ltd Gasket for sewing machine and sewing machine using the same
JP2011023290A (en) * 2009-07-17 2011-02-03 Yazaki Corp Waterproof structure
WO2011075372A2 (en) * 2009-12-18 2011-06-23 Caterpillar Inc. Press in place seal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002295683A (en) * 2001-03-28 2002-10-09 Nok Corp Seal for dovetail groove
JP2004180824A (en) * 2002-12-02 2004-07-02 Pegasus Sewing Mach Mfg Co Ltd Gasket for sewing machine and sewing machine using the same
JP2011023290A (en) * 2009-07-17 2011-02-03 Yazaki Corp Waterproof structure
WO2011075372A2 (en) * 2009-12-18 2011-06-23 Caterpillar Inc. Press in place seal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4350179A1 (en) * 2022-10-04 2024-04-10 Tyco Electronics Japan G.K. Sealing element and connector assembly

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