EP0898056B1 - Joint d'étanchéité pour pièces de machine ayant un mouvement de va-et-vient l'une par rapport à l'autre - Google Patents

Joint d'étanchéité pour pièces de machine ayant un mouvement de va-et-vient l'une par rapport à l'autre Download PDF

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Publication number
EP0898056B1
EP0898056B1 EP98115062A EP98115062A EP0898056B1 EP 0898056 B1 EP0898056 B1 EP 0898056B1 EP 98115062 A EP98115062 A EP 98115062A EP 98115062 A EP98115062 A EP 98115062A EP 0898056 B1 EP0898056 B1 EP 0898056B1
Authority
EP
European Patent Office
Prior art keywords
seal
valve stem
retaining part
sealing lip
seal according
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.)
Expired - Lifetime
Application number
EP98115062A
Other languages
German (de)
English (en)
Other versions
EP0898056A2 (fr
EP0898056A3 (fr
Inventor
Jürgen Netzer
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.)
CR Elastomere GmbH
Original Assignee
CR Elastomere GmbH
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 CR Elastomere GmbH filed Critical CR Elastomere GmbH
Publication of EP0898056A2 publication Critical patent/EP0898056A2/fr
Publication of EP0898056A3 publication Critical patent/EP0898056A3/fr
Application granted granted Critical
Publication of EP0898056B1 publication Critical patent/EP0898056B1/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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/909—Similar sealing structures for mounting on piston and about rod

Definitions

  • the present invention relates to a seal for back and forth machine parts, especially valve stem seals, according to Preamble of claim 1.
  • a valve stem seal which consists of a There is a sealing ring, which is attached to the valve stem guide via a sleeve-shaped holding part is attached.
  • the sleeve-shaped holding part faces the one facing away from the sealing ring End a double folded flange to support the valve spring, whereby a plurality of tabs on the radially inner free end of the lowermost flange part engage in an annular groove.
  • This known holding part has a complicated one Structure and is therefore difficult to manufacture.
  • the tabs are on Provided end of the holding part, so that the holding part with relatively short seats can easily go wrong.
  • the present invention has therefore set itself the task of a Create a seal with a simple and inexpensive holding part that is secure and perfect attachment and centering guaranteed.
  • the projection for axially fixing the seal is after another Feature of the invention in the central region of the axially projecting section of the Holding element provided so that there is also a larger ring area guided support results, whereby misalignments are avoided.
  • the recess corresponding to the projection in the second machine part becomes expediently designed as an annular groove. This is an alignment in Circumferential direction not required.
  • Such a slot can also in the protruding sleeve section of the holding part be provided, on the one hand, the sliding of the holding part onto the machine part to facilitate and on the other hand to achieve a pressure of the holding part.
  • Another feature of Invention of the holding part at the end of the protruding sleeve section be expanded to the outside in a trumpet shape.
  • the holding part can be made of sheet steel or of another material, e.g. be made of a tough plastic.
  • a production of the holding part Plastic has the advantage that it can be used in a 2-component injection molding machine can be completely manufactured together with the sealing lip.
  • the invention can be advantageously used in particular for valve stem seals use. However, other applications are also conceivable.
  • the valve stem seal consists of a sealing lip 1, which is under radial prestress sealing back and forth on the outer surface 2 of a valve stem guide 3 Movable valve stem 4 is present.
  • the sealing lip 1 is on a sleeve-shaped Holding part 5 by injection, pouring, vulcanization or the like. Attached. From Sealing lip 1 and holding part 5 existing unit is with an axially protruding Sleeve section 6 is pushed onto the outer surface 7 of the valve stem guide 3 and is by at least one radially inward from the central region of the sleeve section 6 of the holding part 5 notched projection 8, which in a corresponding annular groove 9 in the Shell surface 7 of the valve stem guide 3 engages, fixed in the axial direction.
  • the radial preload of the sealing lip 1 is drawn in by the radially inward Section 10 of the holding part 5 exercised.
  • a To provide a ring spring for exerting a preload One more way consists in the one in the section 10 carrying the sealing lip in the axial direction provided slots (not shown).
  • the sealing lip 1 is on the Face 11 of the valve stem guide 3 facing end with an axially projecting, provided annular sealing lip 12 which bears against the end face 11 under prestress and so forms a static seal.
  • the protruding sleeve section 6 of the holding part 5 can also have one or more axially extending slots (not shown) may be provided.

Claims (8)

  1. Joint d'étanchéité pour des éléments de machine animés d'un mouvement alternatif relatif de va-et-vient, en particulier joint d'étanchéité de tige de soupape, comprenant une lèvre d'étanchéité en élastomère qui est appliquée avec une précontrainte élastique dans la direction radiale, contre l'un des éléments de machine, et une partie support en forme de manchon qui porte la lèvre d'étanchéité, s'étend au-delà de ladite lèvre d'étanchéité dans la direction axiale et assure simultanément la fixation du joint d'étanchéité sur le deuxième de élément de machine, caractérisé en ce que la partie support (5), dans sa partie débordante (6), est pourvue d'au moins une saillie (8), essentiellement inclinée vers l'intérieur, qui pénètre dans un évidement (9) aménagé dans la surface périphérique (7) du deuxième élément de machine (3), la saillie (8) dans la partie support (5) étant formée par une crevée dans le matériau de la partie débordante (6).
  2. Joint d'étanchéité selon la revendication 1, caractérisé en ce que la saillie (8) dirigée vers l'intérieur est prévue dans la portion médiane, entre la lèvre d'étanchéité (1) et l'extrémité de la partie support (5) éloignée de la lèvre d'étanchéité (1).
  3. Joint d'étanchéité selon la revendication 1 ou 2, caractérisé en ce que l'évidement dans la surface périphérique (7) du deuxième élément de machine (3) est conformé en gorge annulaire (9).
  4. Joint d'étanchéité selon une des revendication 1 à 3, caractérisé en ce que la partie support (5), dans la région de la portion (10) portant la lèvre d'étanchéité (1), est pourvue d'au moins une fente qui s'étend dans la direction axiale.
  5. Joint d'étanchéité selon une des revendications 1 à 4, caractérisé en ce que la partie support (5), dans sa partie débordante (6) formant manchon, est pourvue d'au moins une fente qui s'étend dans la direction axiale.
  6. Joint d'étanchéité selon une des revendications 1 à 5, caractérisé en ce que la partie support (5), à l'extrémité de sa partie débordante (6) formant manchon, s'évase en trompette en direction de l'extérieur.
  7. Joint d'étanchéité selon une des revendications 1 à 6, caractérisé en ce que la partie support (5) est fabriquée en matière plastique.
  8. Joint d'étanchéité selon une des revendications 1 à 7 destiné à être utilisé comme joint de tige de soupape, le premier élément de machine étant une tige de soupape (4) et le deuxième élément de machine étant un guide de soupape (3), caractérisé en ce que l'évidement (9) destiné à recevoir la saillie (8) de la partie support (5) est aménagé dans le guide de soupape (3).
EP98115062A 1997-08-21 1998-08-11 Joint d'étanchéité pour pièces de machine ayant un mouvement de va-et-vient l'une par rapport à l'autre Expired - Lifetime EP0898056B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19736321 1997-08-21
DE19736321A DE19736321A1 (de) 1997-08-21 1997-08-21 Abdichtung für relativ zueinander hin- und hergehende Maschinenteile

Publications (3)

Publication Number Publication Date
EP0898056A2 EP0898056A2 (fr) 1999-02-24
EP0898056A3 EP0898056A3 (fr) 1999-03-24
EP0898056B1 true EP0898056B1 (fr) 2002-11-27

Family

ID=7839673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98115062A Expired - Lifetime EP0898056B1 (fr) 1997-08-21 1998-08-11 Joint d'étanchéité pour pièces de machine ayant un mouvement de va-et-vient l'une par rapport à l'autre

Country Status (3)

Country Link
US (1) US6227548B1 (fr)
EP (1) EP0898056B1 (fr)
DE (2) DE19736321A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9806543D0 (en) * 1998-03-26 1998-05-27 Lucas Ind Plc Disc brake seal assembly
US6422569B1 (en) * 1999-11-30 2002-07-23 Parker-Hannifin Corporation Snap-in retainer for a fluid seal
US6609700B2 (en) * 2001-05-31 2003-08-26 Dana Corporation Valve seal assembly with spring finger retainer
DE10207818B4 (de) * 2002-02-25 2006-04-06 Carl Freudenberg Kg Ventilschaftabdichtung an Verbrennungskraftmaschinen
US6764079B1 (en) 2002-04-19 2004-07-20 Dana Corporation Valve seal assembly with straight-walled retainer
US7025030B2 (en) * 2003-08-21 2006-04-11 Dana Corporation Valve stem seal assembly with changeable cap
US20050147933A1 (en) * 2003-12-31 2005-07-07 Eastman Kodak Company Color motion picture print film
US7900932B2 (en) * 2004-08-03 2011-03-08 Dana Automotive Systems Group, Llc Valve stem sealing assembly
DE102010025986A1 (de) * 2010-07-02 2012-01-05 Handtmann Systemtechnik Gmbh & Co. Kg Ladevorrichtung zur Verdichtung von Ladeluft
US9371749B2 (en) 2012-02-08 2016-06-21 Dana Automotive Systems Group, Llc Hybrid valve stem seal retainer assembly
ITTO20131018A1 (it) * 2013-12-13 2015-06-14 Corcos Ind S A S Di Extern A Italia S R L Guarnizione per una valvola di un motore a combustione interna
CN105874248B (zh) * 2014-01-22 2017-09-26 Nok株式会社 阀杆密封
US9943935B2 (en) 2016-04-08 2018-04-17 Dana Automotive Systems Group, Llc Method of making a valve stem seal with formable retainer tabs
US10072539B2 (en) 2017-01-20 2018-09-11 Dana Automotive Systems Group, Llc Valve stem seal assembly with a symmetrical retainer
WO2019159785A1 (fr) 2018-02-19 2019-08-22 Nok株式会社 Dispositif de scellement hermétique et procédé pour sa fabrication
CN113848137B (zh) * 2021-09-22 2024-04-12 天津大学 一种可动态调整环境参数的海底管道的腐蚀疲劳试验装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1899655U (de) * 1963-08-13 1964-08-27 Goetzewerke Ventilschaftabdichtung, insbesondere fuer brennkraftmaschinen.
SE320226B (fr) * 1965-06-14 1970-02-02 Dana Corp
US3554562A (en) * 1967-06-21 1971-01-12 Gen Motors Corp Valve stem seal assembly
DE2444792A1 (de) * 1974-09-19 1976-04-08 Goetzewerke Lippendichtungsring, insbesondere fuer ventilschaftfuehrungen
US4773363A (en) * 1987-05-01 1988-09-27 Microdot Inc. Fixed valve stem oil deflector
US4811703A (en) * 1988-03-14 1989-03-14 Microdot Inc. Valve stem seal
FR2645937B1 (fr) * 1989-04-12 1991-08-30 Peugeot Dispositif pour le guidage et l'etancheite d'une soupape
US4947811A (en) * 1989-06-30 1990-08-14 Dana Corporation Floating valve stem seal
US4909202A (en) * 1989-06-30 1990-03-20 Dana Corporation Frustoconical valve stem sealing element

Also Published As

Publication number Publication date
US6227548B1 (en) 2001-05-08
EP0898056A2 (fr) 1999-02-24
DE19736321A1 (de) 1999-03-11
EP0898056A3 (fr) 1999-03-24
DE59806411D1 (de) 2003-01-09

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