WO2019073695A1 - Joint d'étanchéité - Google Patents

Joint d'étanchéité Download PDF

Info

Publication number
WO2019073695A1
WO2019073695A1 PCT/JP2018/030861 JP2018030861W WO2019073695A1 WO 2019073695 A1 WO2019073695 A1 WO 2019073695A1 JP 2018030861 W JP2018030861 W JP 2018030861W WO 2019073695 A1 WO2019073695 A1 WO 2019073695A1
Authority
WO
WIPO (PCT)
Prior art keywords
gasket
groove
base
contact portion
metal member
Prior art date
Application number
PCT/JP2018/030861
Other languages
English (en)
Japanese (ja)
Inventor
晃司 神谷
Original Assignee
Nok株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nok株式会社 filed Critical Nok株式会社
Publication of WO2019073695A1 publication Critical patent/WO2019073695A1/fr

Links

Images

Classifications

    • 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
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing

Definitions

  • the present invention relates to a gasket, and more particularly to a gasket used in a vehicle, a general purpose machine, and the like.
  • gaskets are used to seal a housing in an engine, a device that houses electronic components, and the like.
  • the gasket is elastically deformed, for example, by being pinched in a compressed state between a pair of members which are combined to form a housing, thereby sealing the pair of members and sealing the housing (for example, a patent) Literature 1).
  • Automobiles may travel along the beach area or in areas where snow melting agents are dispersed. At this time, salt water or snow melting agents adhere to automobile parts, and salt water or snow melting agents intrude into the gaps between the members sandwiching the gasket. May stagnate. The stagnant salt water or snow melting agent may cause corrosion on the metal member holding the gasket. When this corrosion extends beyond the sealing line of the gasket, the sealing function of the gasket is degraded.
  • the vicinity of the seal line of the metal member sandwiching the gasket is not corroded by salt water or a snow melting agent etc.
  • a structure for suppressing corrosion in the vicinity of a seal line of a member has been conventionally required.
  • This invention is made in view of the above-mentioned subject,
  • the objective is to provide the gasket which can aim at suppression of the corrosion by the salt water etc. of the seal line vicinity of the metal member which clamps a gasket.
  • the gasket according to the present invention is housed in a groove formed in a metal member, and is sandwiched between the metal member and a resin member, the metal A gasket for sealing between a member and the resin member, the gasket comprising: a base; and a protrusion extending along the extension direction of the base and protruding from the non-sealing side of the base, The projection is characterized in that it is in contact with the groove.
  • the base is accommodated in the groove and is compressed between the metal member and the resin member.
  • the base has a groove bottom contact portion contacting the groove bottom of the groove, and a resin contact portion contacting the resin member, and the protrusion is It is provided between the groove bottom contact portion and the resin contact portion.
  • the base is formed in an annular shape, and the projection extends over the entire circumference of the base.
  • gasket according to the present invention it is possible to suppress corrosion due to salt water or the like in the vicinity of the seal line of the metal member sandwiching the gasket.
  • FIG. 2 is a cross-sectional view of the gasket shown in FIG. 1 taken along a line AA and a cross section orthogonal to the extension direction of the gasket. It is a fragmentary sectional view which shows the appearance of the gasket shown in FIG. 1 in an attachment state.
  • FIG. 1 is a plan view showing a schematic structure of the gasket 1 according to the embodiment of the present invention
  • FIG. 2 is orthogonal to the extending direction of the gasket 1 along line AA of the gasket 1 shown in FIG. 3 is a partial cross-sectional view showing the state of the gasket 1 shown in FIG. 1 in an attached state.
  • the gasket 1 is used for vehicles, general-purpose industrial machines, etc., and is pressed between two members to be elastically deformed, and used to seal between the two members. For example, in an engine or the like, the gasket 1 is pressed between two members forming a housing to seal the housing.
  • FIGS. 1 and 2 the gasket in the free state is illustrated, which is not clamped between the members.
  • the gasket 1 As described later with reference to FIG. 3, the gasket 1 according to the present embodiment is accommodated in the groove 31 formed in the metal member 30, and is between the metal member 30 and the resin member 40. It is for pinching and sealing between the metal member 30 and the resin member 40. Further, as shown in FIGS. 1 and 2, the gasket 1 includes a base 11 and a protrusion 12 which extends along the extension direction of the base 11 and protrudes from the non-sealing side of the base 11. It is in contact with the groove 31.
  • the base 11 is formed in an annular shape, and the projection 12 extends around the entire circumference of the base 11.
  • the sealed side is the side of the space to be sealed
  • the non-sealed side is the side opposite to the side to be sealed, for example, the atmosphere side.
  • the closed space side (inside side) surrounded by the annular gasket 1 is the sealing side
  • the non-sealing side is the inside side It is the other side of the other side.
  • the upper side is the upper side
  • the lower side is the lower side.
  • the base 11 is accommodated in the groove 31 and is compressed between the metal member 30 and the resin member 40. Further, the base 11 has a groove bottom contact portion 11b in contact with the groove bottom 31b of the groove 31 and a resin contact portion 11a in contact with the resin member 40, and the projection 12 is a groove bottom contact portion It is provided between 11b and the resin contact part 11a.
  • the base 11 is formed such that a cross section along the line AA (hereinafter, also simply referred to as a cross section) forms a substantially circular shape, and in the attached state described later
  • a resin contact portion 11a which is a portion which forms a seal line S1 of a predetermined width in contact with a member 40 made of resin, and a groove which is a portion which forms a seal line S2 of a predetermined width in contact with a groove bottom 31b
  • a bottom contact portion 11b and a seal side groove wall contact portion 11c which is a portion in contact with the seal side groove wall 31c are provided.
  • the thickness T1 (the width between the resin contact portion 11a and the groove bottom contact portion 11b in the free state of the gasket 1) in the cross section of the base 11 is constant or substantially constant in the extension direction.
  • the thickness T1 is set larger than the groove depth D of the groove 31 in the free state of the gasket 1.
  • the cross section of the base 11 is not limited to a substantially circular shape, and may be, for example, a rectangular shape.
  • the protruding portion 12 protrudes from the portion on the outer side (non-sealed side) of the base 11 by a predetermined protruding length L toward the outer side.
  • the projecting portion 12 has a non-sealing side groove wall contact portion 12a which is a portion forming a predetermined seal line S3 in contact with the non-sealing side groove wall 31a of the groove 31 in an attached state described later.
  • the tip of the protrusion 12 is convex toward the outside. That is, as shown in FIG.
  • the cross-sectional shape of the tip of the protrusion 12 forming the non-sealing side groove wall contact portion 12a forms a curved surface or a V-shaped surface convex toward the outside.
  • the projection length L is between the base portion of the projection 12 and the outermost side of the non-sealing side groove wall contact portion 12 a in the inside and outside directions in the free state of the gasket 1. And a constant or substantially constant in the extending direction.
  • the protruding length L of the protruding portion 12 is set such that the non-sealing side groove wall contact portion 12a contacts the non-sealing side groove wall 31a in the mounting state described later.
  • the non-sealing side groove wall contact portion 12a is a non-sealing side groove It may be set so as not to contact the wall 31a, or may be set so that the non-sealing side groove wall contact portion 12a contacts the non-sealing side groove wall 31a.
  • the protrusion 12 is provided at a predetermined height h from the groove bottom contact portion 11 b of the base 11.
  • the height h is, as shown in FIG. 2, the outermost part of the non-sealing side groove wall contact portion 12 a and the lowermost side of the groove bottom contact portion 11 b of the base 11 in the vertical direction in the free state of the gasket 1. And a constant or substantially constant in the extending direction.
  • the height h is set to be smaller than the groove depth D of the groove 31 in the free state of the gasket 1.
  • the groove depth D of the groove 31 is larger than the groove depth D of the groove 31 in the mounting state where the gasket 1 is compressed vertically. It may be set to be small.
  • the non-sealing side groove wall contact portion 12a of the protrusion 12 is a seal line on the upstream side in the penetration direction X of salt water etc. shown in FIG. 3 than the seal line S2 formed by the groove bottom contact portion 11b. S3 is formed.
  • the gasket 1 is made of an elastic body made of synthetic rubber.
  • the synthetic rubber is a synthetic rubber containing at least one of nitrile rubber (NBR), styrene butadiene rubber (SBR), fluororubber (FKM), acrylic rubber (ACM), and silicone rubber.
  • the operation of the gasket 1 will be described. Specifically, as shown in FIG. 3, the gasket 1 is held between the metal member 30 and the resin member 40 to be elastically deformed, and the metal member 30 and the resin member 40 are deformed. There is a seal between The metal member 30 and the resin member 40 are fastened with the flat surface 30a formed on the metal member 30 and the flat surface 40a formed on the resin member 40 facing each other, and the flat surface 30a and the flat surface are formed. The gasket 1 is pinched between itself and 40a to be elastically deformed.
  • the metal member 30 and the resin member 40 are, for example, a cylinder head and cylinder head cover of an engine, a case of a fuel cell stack, and members forming the casing of other devices, and the flat surfaces 30a and 40a are, for example, It is formed in the flange part formed in the member 30 made of metal, and the member 40 made of resin.
  • the gasket 1 is elastically deformed from the free state shown in FIG. 2 in the process of fastening the metal member 30 and the resin member 40, and the contact portion with the metal member 30 and the resin member 40 (seal The fastening operation is performed until the desired contact pressure is generated in the lines S1 to S3). Fastening is performed, for example, by screwing a bolt. As shown in FIG. 3, upon completion of the fastening operation, the gasket 1 is in the attached state, and the gasket 30 is clamped so as to seal between the plane 30a and the plane 40a with a desired sealing property. In the case of the present embodiment, three seal lines S1 to S3 are formed between the gasket 1 and the member 30 made of metal and the member 40 made of resin.
  • the base 11 is pressed against the flat surface 40a of the resin member 40 with a pressure of a desired magnitude, and is in close contact with the flat surface 40a to form a seal line S1 of a desired width.
  • a surface pressure of a desired magnitude is generated on the seal line S1.
  • the base 11 is pressed against the groove bottom 31b with a pressure of a desired magnitude at the groove bottom contact portion 11b to form a seal line S2 of a desired width in close contact with the groove bottom 31b.
  • a contact pressure of a desired magnitude is generated. Thereby, sealing between the metal member 30 and the resin member 40 is achieved.
  • the protrusion 12 is pressed against the non-sealing side groove wall 31a with a pressure of a desired magnitude at the non-sealing side groove wall contact portion 12a to form a seal line S3 of a desired width in close contact with the non-sealing side groove wall 31a.
  • a contact pressure of a desired magnitude is generated on the seal line S3.
  • the base 11 in the attached state is pressed against the sealing side groove wall 31c with a pressure of a desired magnitude at the sealing side groove wall contact portion 11c.
  • the non-sealing side groove wall contact portion 12a is pressed against the non-sealing side groove wall 31a by the reaction force due to the contact between the sealing side groove wall contact portion 11c and the sealing side groove wall 31c, and the seal line S3 can be formed reliably.
  • the non-sealing side groove wall contact portion 12a and the non-sealing side groove wall 31a and the sealing side groove wall contact portion 11c are not in contact with the sealing side groove wall 31c by the clamping force between the metal member 30 and the resin member 40. As long as the seal line S3 is formed between them, the base 11 in the attached state may not be in contact with the sealing side groove wall 31c at the sealing side groove wall contact portion 11c.
  • the groove bottom contact portion 11b of the gasket 1 forms the seal line S2 with the metal member 30 in the mounted state, and the resin contact portion 11a of the gasket 1 is made of resin A seal line S1 is formed between the two members 40 of FIG. In the mounted state, the gasket 1 generates a desired surface pressure at the seal lines S1 and S2, and sealing between the metal member 30 and the resin member 40 is properly achieved.
  • the gasket 1 according to the embodiment of the present invention is located upstream of the seal line S2 between the groove 31 and the groove bottom 31b in the intrusion direction X such as salt water, and between the non-sealing side groove wall 31a of the groove 31.
  • Seal line S3 can be formed. Since the groove 31 is divided into the upper groove space R1 and the lower groove space R2 by the seal line S3 of the non-sealing side groove wall contact portion 12a, between the flat surface 30a and the flat surface 40a from the non-sealing side (external side) Even when salt water or the like intrudes into the upper groove space R1 after passing through the gap g, it is possible to suppress the salt water or the like from intruding further into the lower groove space R2.
  • the gasket 1 can suppress the occurrence of corrosion in the vicinity of the seal line S2 of the groove bottom contact portion 11b of the metal member 30 for clamping the gasket 1.
  • the alumite treatment becomes unnecessary and the present embodiment
  • the gasket 1 according to is preferred.
  • the gasket 1 As described above, according to the gasket 1 according to the embodiment of the present invention, it is possible to suppress corrosion due to salt water or the like in the vicinity of the seal line S2 of the groove bottom contact portion 11b of the metal member 30 sandwiching the gasket 1. it can.
  • this invention is not limited to the gasket 1 which concerns on the said embodiment of this invention, It includes all the aspects contained in the concept of this invention, and a claim. .
  • the respective configurations may be selectively combined as appropriate so as to achieve at least a part of the problems and the effects described above.
  • the shape, material, arrangement, size, and the like of each component in the above embodiment can be appropriately changed according to the specific use mode of the present invention.
  • SYMBOLS 1 Gasket, 11 ... Base part, 11a ... Resin contact part, 11b ... Groove bottom contact part, 11c ... Sealing side groove wall contact part, 12 ... Protrusion part, 12a ... Non-sealing side groove wall contact part, 30 ...
  • Metal member, 30a, 40a flat surface, 31: groove, 31a: non-sealed side groove wall, 31b: groove bottom, 31c: sealed side groove wall, 40: member made of resin, D: groove depth, g: gap, h: height, L: Protrusion length, R1: Upper groove space, R2: Lower groove space, S1, S2, S3: Seal line, T1: Thickness, X: Intrusion direction of salt water etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)

Abstract

L'invention concerne un joint d'étanchéité dans lequel la corrosion provoquée par l'eau salée, etc, et se produisant à proximité de la ligne d'étanchéité d'un élément métallique qui serre et presse le joint d'étanchéité peut être supprimée. Ce joint d'étanchéité (1) est contenu dans une rainure (31) formée dans un élément métallique (30), est serré entre l'élément métallique (30) et un élément en résine (40), et assure l'étanchéité entre l'élément métallique (30) et l'élément en résine (40). Le joint d'étanchéité (1) est pourvu d'une base (11) et d'une saillie (12), la saillie (12) s'étendant dans la direction dans laquelle la base (11) s'étend et faisant saillie depuis le côté non scellé de la base (11). La saillie (12) est conçue pour être en contact avec la rainure (31).
PCT/JP2018/030861 2017-10-11 2018-08-21 Joint d'étanchéité WO2019073695A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017197934 2017-10-11
JP2017-197934 2017-10-11

Publications (1)

Publication Number Publication Date
WO2019073695A1 true WO2019073695A1 (fr) 2019-04-18

Family

ID=66101381

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/030861 WO2019073695A1 (fr) 2017-10-11 2018-08-21 Joint d'étanchéité

Country Status (1)

Country Link
WO (1) WO2019073695A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02150575A (ja) * 1988-11-29 1990-06-08 Toyota Autom Loom Works Ltd 固定用ｏリング
JP2003172452A (ja) * 2001-12-04 2003-06-20 Nippon Valqua Ind Ltd 金属ガスケットによる密封構造および密封方法
JP2008281110A (ja) * 2007-05-10 2008-11-20 Nok Corp 密封構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02150575A (ja) * 1988-11-29 1990-06-08 Toyota Autom Loom Works Ltd 固定用ｏリング
JP2003172452A (ja) * 2001-12-04 2003-06-20 Nippon Valqua Ind Ltd 金属ガスケットによる密封構造および密封方法
JP2008281110A (ja) * 2007-05-10 2008-11-20 Nok Corp 密封構造

Similar Documents

Publication Publication Date Title
JP5880030B2 (ja) 金属ガスケットによるシール構造
WO2017154615A1 (fr) Joint d'étanchéité et dispositif d'étanchéité
JP2012249378A (ja) グロメット
JP2017027701A (ja) 電池パックのシール構造
JP5879845B2 (ja) 金属ガスケットによるシール構造
US9068654B2 (en) Gasket
WO2019073695A1 (fr) Joint d'étanchéité
US20140175759A1 (en) Gasket and sealing structure
JP6735730B2 (ja) ガスケット
JP4476829B2 (ja) グラスライニング製容器におけるマンホール構造
JP7313336B2 (ja) ガスケット及び密封構造
CA2941097C (fr) Joint d'etancheite metallique
WO2017187978A1 (fr) Joint d'étanchéité
WO2021241615A1 (fr) Joint d'étanchéité
JP7177195B2 (ja) ガスケット及び密封装置
JP2011032891A (ja) エンジン用樹脂製カバー部材のシール構造
JP2018078131A (ja) 静止誘導機器
JP2006132485A (ja) ヘッドカバーガスケット
JP2007092911A (ja) ガスケット
JP6331213B2 (ja) シール製品の製造方法
JP2015081627A (ja) ガスケット
JP2002322944A (ja) 内燃機関用合成樹脂製シリンダヘッドカバーの取り付け構造
JP2018021581A (ja) ガスケット及び密封装置
JP2018138801A (ja) フィルター付きガスケット
JP2014181566A (ja) 内燃機関

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18866320

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18866320

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP