EP0774568A1 - Dispositif d'étanchéité - Google Patents

Dispositif d'étanchéité Download PDF

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Publication number
EP0774568A1
EP0774568A1 EP96113464A EP96113464A EP0774568A1 EP 0774568 A1 EP0774568 A1 EP 0774568A1 EP 96113464 A EP96113464 A EP 96113464A EP 96113464 A EP96113464 A EP 96113464A EP 0774568 A1 EP0774568 A1 EP 0774568A1
Authority
EP
European Patent Office
Prior art keywords
sealing
spring
sleeve
arrangement according
sealing arrangement
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP96113464A
Other languages
German (de)
English (en)
Other versions
EP0774568B1 (fr
Inventor
David Sakata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP0774568A1 publication Critical patent/EP0774568A1/fr
Application granted granted Critical
Publication of EP0774568B1 publication Critical patent/EP0774568B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant

Definitions

  • the invention relates to a sealing arrangement comprising a valve stem seal of an internal combustion engine.
  • the invention has for its object to further develop a sealing arrangement of the type mentioned in such a way that the sealing body and the Spring secured against loss and are permanently positioned to each other that the sealing arrangement is more compact, has a lower weight and is inexpensive to manufacture and easy to assemble.
  • a sleeve made of tough, hard material with a first and a second end face, the sleeve having on its first end face a flange which extends outward in the radial direction and on the axially opposite second end face a flange which extends inward in the radial direction Support wall, the flange forming the abutment for a valve spring, wherein an annular sealing body sealingly enclosing the valve stem is fixed by an interference fit within the sleeve on the supporting wall, and wherein a spring designed as a supporting body is integrally connected to the sealing body and immediately connected to one another the retaining wall is supported.
  • the sealing body consists of an elastomeric material and has at least one annular first sealing lip.
  • the sealing body has a second sealing lip on the end of the sealing body facing away from the spring, the second sealing lip sealingly engaging with the front-side limitation of the valve guide.
  • the sleeve is pressed against the valve guide in the axial direction by a valve spring and is held in its position.
  • the sealing body Arranged within the sleeve is the sealing body, which surrounds the valve stem with its first sealing lip by means of a prestressed spring and touches the valve guide with its second sealing lip.
  • the first sealing lip dynamically seals the reciprocating valve stem, the second sealing lip statically seals against the valve guide.
  • the dynamic sealing of the first sealing lip on the valve stem leads on the one hand to sufficient lubrication in the area of the dynamic seal being ensured and on the other hand to prevent an undesirably large leakage, for example via the valve stem, from entering the cylinders of the internal combustion engine. Due to the one-piece design of the sealing body with the spring, which form a preassembled unit, an exact assignment of the two parts to one another is always guaranteed during the intended use of the valve stem seal.
  • the sleeve has at least two holding claws which extend in the axial direction and surround the sealing body on the circumference and which are associated with one another in the circumferential direction at a distance from one another and are uniformly distributed in the circumferential direction.
  • the advantage here is that the holding claws significantly reduce the material required to produce the sleeve, based on a sleeve which is designed to be closed in the circumferential direction. It can be provided, for example, that four holding claws are used which are uniformly distributed in the circumferential direction and surround the sealing body on the circumference.
  • Both the first and the second sealing lip are in each case under elastic prestress on the component to be sealed. Due to the arrangement of the sealing body within the sleeve and its attachment to the valve guide and the valve stem, the sealing arrangement has only a comparatively small extent in the axial direction.
  • the one-piece design of the spring with the sealing body simplifies the assembly of the sealing arrangement and ensures problem-free assignment of the parts during the entire service life.
  • the combination of the two sealing lips in a sealing body simplifies both the manufacture and the assembly of the sealing arrangement.
  • the amount of the elastomeric material required for a reliable seal is reduced to a minimum by including the two sealing lips in a sealing body.
  • the support wall which forms the abutment for the spring which is integrally connected to the sealing body, is a component of the holding claws.
  • the sleeve can consist of a metallic or polymeric material. In view of the lowest possible relaxation of the sleeve and the spring, preference is given to a metallic material.
  • the spring can consist of a polymeric material.
  • the spring preferably has an essentially L-shaped cross section.
  • the leg extending essentially in the axial direction completely covers the first sealing lip in the axial direction. This ensures that the first sealing lip always encloses the valve stem with a predetermined preload.
  • FIG. 1 shows a seal arrangement which comprises a valve stem seal 10.
  • the sleeve 14 consists in this embodiment of a metallic material. Deviating from this, however, tough, hard polymeric materials can also be used, for example.
  • the sealing body 24 is made of rubber or elastomer, the first sealing lip 28 being formed by two intersecting conical surfaces and touching the valve stem 12 in a sealing manner under elastic prestress.
  • the valve stem 12 is guided within the valve guide 38.
  • the valve is brought into the open position against the spring force of the valve spring 16 by a camshaft (not shown here) and then again into the closed position by the valve spring 16.
  • the sleeve 14 On its first end face, the sleeve 14 has a flange 20 which extends outward in the radial direction and on the axially opposite second end face a support wall 18 which extends inwards in the radial direction.
  • the support wall 18 forms the abutment for the spring 26 and touches it immediately attached.
  • the elastomeric material of the sealing body 24 seals the sleeve 14.
  • the radially outwardly extending flange 20 serves as an abutment for the valve spring 16.
  • the cylinder head 22 consists, for example, of a light metal alloy. Deviating from this, the cylinder head can also consist of cast iron.
  • the second sealing lip 34 of the sealing body 24 statically seals the valve guide 38.
  • the sealing body 24 is shown, which forms a unit with the spring 26. Both the first sealing lip 28 and the second sealing lip 34 are ring-shaped in themselves and touch the surfaces to be sealed in contact with elastic prestress.
  • the spring 26 is annular and in this embodiment consists of a polymeric material. With regard to the low weight of the sealing arrangement, such a configuration is of particular advantage.
  • the elastomeric material of the sealing body 24 is connected to the spring 26 by vulcanization during its manufacture. In that the spring 26 and the sealing body 24 in one piece are designed to merge into one another, jumping out of the spring 26 from the sleeve 14 during assembly is excluded.
  • the unit consisting of the spring 26 and the sealing body 24 is placed within the sleeve 14 in such a way that the spring 26 touches the support wall 18 directly.
  • the sealing body 24 is arranged with a elastic bias within the sleeve 14.
  • the sealing arrangement according to the invention brings about an exact concentric assignment of sleeve 14, sealing body 24 and valve stem 12 to one another. This is a noteworthy advantage for good usage properties over a long period of use.
  • the sleeve 14 is shown as a single part in a sectional view. It can be seen that four holding claws 36 extending in the axial direction are provided in this exemplary embodiment, which are associated with one another in the circumferential direction at a distance from one another and are arranged uniformly distributed in the circumferential direction. It is advantageous here that the entire bearing arrangement has a comparatively low weight due to such a configuration and considerable material savings are possible.
  • the sleeve 14 and the spring 26 connected to the sealing body 24 are shown, which are connected to form a unit.
  • the sealing body 24 is mounted in the sleeve 14, so that there is a preassembled unit, which is then completed to form a sealing arrangement.
  • the preassembled unit is connected to the valve guide 38 and the valve spring 16 is mounted in such a way that it is supported on the flange 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Temperature-Responsive Valves (AREA)
  • Lift Valve (AREA)
EP96113464A 1995-11-14 1996-08-22 Dispositif d'étanchéité pour une queue de soupape Expired - Lifetime EP0774568B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/557,459 US5558056A (en) 1995-11-14 1995-11-14 Two-piece valve stem seal
US557459 1995-11-14

Publications (2)

Publication Number Publication Date
EP0774568A1 true EP0774568A1 (fr) 1997-05-21
EP0774568B1 EP0774568B1 (fr) 2002-02-20

Family

ID=24225493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96113464A Expired - Lifetime EP0774568B1 (fr) 1995-11-14 1996-08-22 Dispositif d'étanchéité pour une queue de soupape

Country Status (9)

Country Link
US (1) US5558056A (fr)
EP (1) EP0774568B1 (fr)
JP (1) JPH09177522A (fr)
KR (1) KR100238502B1 (fr)
CN (1) CN1159506A (fr)
AT (1) ATE213521T1 (fr)
BR (1) BR9605566A (fr)
CA (1) CA2176662A1 (fr)
DE (1) DE59608757D1 (fr)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19709170C2 (de) * 1997-03-06 1999-11-04 Cr Elastomere Gmbh Abdichtung für hin- und hergehende Maschinenteile, insbesondere Ventilschaftabdichtung
US5775284A (en) 1997-05-07 1998-07-07 Freudenberg-Nok General Partnership Two-piece valve stem seal
US6125810A (en) * 1998-12-10 2000-10-03 Caterpillar Inc. Ceramic valve guide with two internal diameters
US6202616B1 (en) * 1999-02-17 2001-03-20 Briggs & Stratton Corporation Valve seal assembly for an internal combustion engine
DE19950367C1 (de) * 1999-10-19 2001-02-01 Siemens Ag Drucktaster mit federndem Dichtelement
US6205969B1 (en) 1999-12-22 2001-03-27 Dana Corporation Multi-seal retainer assembly and method for making the same
JP4734712B2 (ja) * 2000-12-19 2011-07-27 Ｎｏｋ株式会社 バルブステムシール
US6412467B1 (en) 2001-04-24 2002-07-02 Dana Corporation Valve seal assembly module with spring and retainers
US6877749B2 (en) * 2002-11-25 2005-04-12 International Engine Intellectual Property Company, Llc Seal for use with a movable rod
US6752398B1 (en) * 2002-12-02 2004-06-22 Dana Corporation Valve stem seal assembly
US6938877B2 (en) * 2003-07-02 2005-09-06 Dana Corporation Valve stem seal assembly
US6901902B1 (en) 2004-02-25 2005-06-07 Freudenberg-Nok General Partnership Two-piece valve stem seal
US7438036B2 (en) * 2005-02-03 2008-10-21 Dana Automotive Systems Group, Llc Oil metering valve seal
KR100716359B1 (ko) * 2005-08-02 2007-05-11 현대자동차주식회사 밸브스템실 장착 확인장치
KR100733072B1 (ko) * 2005-08-09 2007-06-27 한희선 열교환기용 쿨러헤드 및 제조방법
US7533641B1 (en) 2006-04-17 2009-05-19 Jason Stewart Jackson Poppet valve and engine using same
US7311068B2 (en) 2006-04-17 2007-12-25 Jason Stewart Jackson Poppet valve and engine using same
DE102009017599B4 (de) * 2009-04-16 2011-06-16 Aktiebolaget Skf Ventilschaftdichtung
US9500106B2 (en) * 2009-05-20 2016-11-22 Freudenberg—NOK General Partnership Two-piece valve stem seal
US9416690B2 (en) * 2009-07-30 2016-08-16 Freudenberg-Nok General Partnership Reduced inertia valve stem seal flange
EP2540999B1 (fr) * 2011-06-29 2014-07-09 Caterpillar Motoren GmbH & Co. KG Joint de tige de vanne pour moteur à combustion
US9052018B2 (en) * 2011-07-11 2015-06-09 Dana Automotive Systems Group, Inc. Eccentricity tolerant valve stem seal assembly
US8601991B2 (en) 2011-08-02 2013-12-10 Freudenberg-Nok General Partnership Low profile valve stem seal in cylinder head
US9371749B2 (en) 2012-02-08 2016-06-21 Dana Automotive Systems Group, Llc Hybrid valve stem seal retainer assembly
EP2626524B1 (fr) * 2012-02-08 2017-10-04 Dana Automotive Systems Group , LLC Ensemble hybride de retenue de joint de tige de soupape
US8893681B2 (en) * 2013-03-07 2014-11-25 Freudenberg-Nok General Partnership Pressure support for engine valve stem seals
ITTO20130894A1 (it) * 2013-11-04 2015-05-05 Corcos Ind S A S Di Extern A Italia S R L Guarnizione per una valvola di un motore a combustione interna
CN107923535B (zh) * 2015-08-20 2021-02-09 Nok株式会社 气门杆密封件及密封结构
WO2017106437A1 (fr) 2015-12-15 2017-06-22 Dana Automotive Systems Group, Llc Ensemble de joint d'étanchéité de tige de vanne porté de façon tronconique
IT201600106389A1 (it) 2016-10-21 2018-04-21 Freudenberg Sealing Tech S A S Di Externa Italia S R L U Guarnizione per una valvola di un motore a combustione interna
US11326696B2 (en) * 2017-06-26 2022-05-10 Schaeffler Technologies AG & Co. KG Seal for coolant control valve
JP7034753B2 (ja) * 2018-02-19 2022-03-14 Nok株式会社 密封装置および密封構造
JP7303293B2 (ja) * 2019-05-13 2023-07-04 Nok株式会社 バルブステムシール
CN113840978A (zh) * 2019-05-27 2021-12-24 Nok株式会社 阀杆密封件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333961A1 (fr) * 1988-03-25 1989-09-27 Abg Semca S.A. Segment d'étanchéité de piston
EP0392893A1 (fr) * 1989-04-12 1990-10-17 Automobiles Peugeot Dispositif pour le guidage et l'étanchéité d'une soupape
US5017024A (en) * 1988-07-27 1991-05-21 Clark Paul H Seal assembly
US5110142A (en) * 1990-11-30 1992-05-05 Macrotech Fluid Sealing, Inc. Valve stem oil seal
US5174256A (en) * 1991-11-25 1992-12-29 Dana Corporation Variable guide height valve seal

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157865A (en) * 1935-07-02 1939-05-09 Wilkening Mfg Co Packing device
US2207400A (en) * 1939-12-19 1940-07-09 Gass Harold Valve stem packing
US2418674A (en) * 1943-11-06 1947-04-08 Wright Acronautical Corp Valve stem construction
US3162185A (en) * 1962-06-08 1964-12-22 Ford Motor Co Valve stem oil seal
US3306621A (en) * 1964-03-17 1967-02-28 Garlock Inc Valve stem seal
US3554562A (en) * 1967-06-21 1971-01-12 Gen Motors Corp Valve stem seal assembly
US3554182A (en) * 1968-11-14 1971-01-12 Francis M Whitacre Liquid heater especially adapted for liquid submerged use
US3554180A (en) * 1969-03-21 1971-01-12 Gen Motors Corp Valve stem seal
FR2459933A1 (fr) * 1979-06-27 1981-01-16 Renault Joint d'etancheite de passage d'une tige coulissante dans une douille de guidage
JPS59173510A (ja) * 1983-03-19 1984-10-01 Honda Motor Co Ltd 四サイクル内燃機関のバルブステム・シ−ル
DE3610534A1 (de) * 1986-03-27 1987-10-01 Porsche Ag Ventilfuehrung fuer ein abgasventil einer brennkraftmaschine
US4822061A (en) * 1987-10-02 1989-04-18 K-Line Industries, Inc. Valve seal retainer
DE3907001A1 (de) * 1988-05-13 1989-11-23 Goetze Ag Montagevorrichtung fuer ventilfederteller von brennkraftmaschinen
US4909202A (en) * 1989-06-30 1990-03-20 Dana Corporation Frustoconical valve stem sealing element
US4947811A (en) * 1989-06-30 1990-08-14 Dana Corporation Floating valve stem seal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333961A1 (fr) * 1988-03-25 1989-09-27 Abg Semca S.A. Segment d'étanchéité de piston
US5017024A (en) * 1988-07-27 1991-05-21 Clark Paul H Seal assembly
EP0392893A1 (fr) * 1989-04-12 1990-10-17 Automobiles Peugeot Dispositif pour le guidage et l'étanchéité d'une soupape
US5110142A (en) * 1990-11-30 1992-05-05 Macrotech Fluid Sealing, Inc. Valve stem oil seal
US5174256A (en) * 1991-11-25 1992-12-29 Dana Corporation Variable guide height valve seal

Also Published As

Publication number Publication date
KR100238502B1 (ko) 2000-01-15
KR970027655A (ko) 1997-06-24
EP0774568B1 (fr) 2002-02-20
JPH09177522A (ja) 1997-07-08
CN1159506A (zh) 1997-09-17
DE59608757D1 (de) 2002-03-28
ATE213521T1 (de) 2002-03-15
BR9605566A (pt) 1998-08-18
CA2176662A1 (fr) 1997-05-15
US5558056A (en) 1996-09-24

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