NO160023B - RADIAL-oil seal. - Google Patents

RADIAL-oil seal. Download PDF

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Publication number
NO160023B
NO160023B NO764069A NO764069A NO160023B NO 160023 B NO160023 B NO 160023B NO 764069 A NO764069 A NO 764069A NO 764069 A NO764069 A NO 764069A NO 160023 B NO160023 B NO 160023B
Authority
NO
Norway
Prior art keywords
sealing ring
housing
radial shaft
sealing
plastic
Prior art date
Application number
NO764069A
Other languages
Norwegian (no)
Other versions
NO764069L (en
NO160023C (en
Inventor
Hans Forch
Helmut Niklas
Original Assignee
Freudenberg Carl
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
Priority claimed from DE19767602075 external-priority patent/DE7602075U/en
Application filed by Freudenberg Carl filed Critical Freudenberg Carl
Publication of NO764069L publication Critical patent/NO764069L/en
Publication of NO160023B publication Critical patent/NO160023B/en
Publication of NO160023C publication Critical patent/NO160023C/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3244Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • F16J15/3288Filamentary structures, e.g. brush seals

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sealing Devices (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Harvester Elements (AREA)

Description

Oppfinnelsen vedrører en radial-akseltetningsring, bestående av en fleksibel tetningsring og et hus av kunststoff, som er utformet i ett stykke med tetningsringen. The invention relates to a radial shaft sealing ring, consisting of a flexible sealing ring and a plastic housing, which is formed in one piece with the sealing ring.

For avtetning av akselgjennomføringer gjennom husboringer er det nødvendig med tetningstiltak av forskjellige grunner. I samsvar med de mange forskjellige anvendelser er det blitt utviklet et tilsvarende stort antall byggetyper som hver er egnet for et mer eller mindre stort anvendelsesområde. Sealing measures are necessary for various reasons for sealing shaft penetrations through housing bores. In accordance with the many different applications, a correspondingly large number of building types have been developed, each of which is suitable for a more or less large area of application.

Radial-akseltetningsringer består vanligvis av en stiv innbyggingsdel av metall og en umiddelbart dermed forbundet elastomerdel. Radial shaft sealing rings usually consist of a rigid metal built-in part and an elastomer part immediately connected to it.

Elastomerdelen har en spesielt tilformet tetningsleppe, som ligger slepende og dermed tettende an mot omkretsen til den aksel som skal avtettes. The elastomer part has a specially shaped sealing lip, which lies trailingly and thus sealingly against the circumference of the shaft to be sealed.

I den senere tid er det i tysk utlegningsskrift nr. 23 39 353 blitt kjent en løsning ved hvilken elastomerdelen er blitt erstattet av en aksielt mot akselen anliggende struktur, fra hvis mot akselen vendte overflate det står frem fiberender. Tetninger av denne type har vist seg mer robuste mot mekaniske beskadigelser, og de har vist gode egenskaper med hensyn til tetningsvirkningen. På grunn av den kompliserte fremstillingprosess har denne type tetninger likevel inntil nu ikke oppnådd nevneverdig utbredelse. In recent times, a solution has been known in German specification no. 23 39 353 whereby the elastomer part has been replaced by a structure axially attached to the shaft, from whose surface facing the shaft fiber ends protrude. Seals of this type have proven to be more robust against mechanical damage, and they have shown good properties with regard to the sealing effect. However, due to the complicated manufacturing process, this type of seal has not yet achieved significant widespread use.

Fremstillingsprosessen for disse tetninger blir i det vesentlige bestemt av den problematiske forankring av det fiberholdige tetningselement i innbyggingsdelen. For oppnåelse av en tilstrekkelig tett og mekanisk fast tilslut-ning var i mange tilfeller en anvendelse av metall-klemringer uunngåelig. The manufacturing process for these seals is essentially determined by the problematic anchoring of the fiber-containing sealing element in the built-in part. In order to achieve a sufficiently tight and mechanically firm connection, in many cases the use of metal clamping rings was unavoidable.

Den umiddelbare påsprøyting av en fiberholding elastomer på en enkel tetningsring på lignende måte som ved fremstillingsprosessen for leppetetningsringer er riktignok mulig under bestemte forutsetninger. Ved en slik fremgangsmåte blir ved hjelp av de innleirede fibre imidlertid bare oppnådd en slitasjereduksjon, og tetningsvirkningen svarer ikke til den i henhold til tysk utlegnngsskrift nr. 23 39 353. Den oppgave som ligger til grunn for foreliggende oppfinnelse er å utvikle en radial-akseltetningsring som sikrer de mange utformingsmuligheter for tetningselementet ifølge tysk utlegningsskrift nr. 23 39 353 og derved kan fremstilles på en tilnærmet like enkel måte som de kjente leppetetningsringer. The immediate spraying of a fiber-holding elastomer onto a simple sealing ring in a similar manner to the manufacturing process for lip sealing rings is admittedly possible under certain conditions. In such a method, however, only a wear reduction is achieved with the help of the embedded fibers, and the sealing effect does not correspond to that according to German specification no. 23 39 353. The task underlying the present invention is to develop a radial shaft sealing ring which ensures the many design possibilities for the sealing element according to German specification no. 23 39 353 and thereby can be produced in an almost as simple way as the known lip sealing rings.

Denne oppgave blir ifølge oppfinnelsen løst ved en radial-akseltetningsring som er kjennetegnet ved det som fremgår av kravene. According to the invention, this task is solved by a radial shaft sealing ring which is characterized by what appears in the requirements.

Ifølge tegningen som viser et halvt snitt av to utførelses-former for en radial-akseltetningsring ifølge oppfinnelsen, består denne av et hus 1 og en deri anordnet fleksibel tetningsring 2 fra hvis løpeflate det står frem fibre. Huset består av kunststoff, en termoplast, en duroplast eller polyuretan og er umiddelbart tiiformet i ett stykke på tetningsringen. According to the drawing, which shows a half section of two embodiments of a radial shaft sealing ring according to the invention, this consists of a housing 1 and a flexible sealing ring 2 arranged therein, from whose running surface fibers protrude. The housing consists of plastic, a thermoplastic, a duroplast or polyurethane and is immediately molded in one piece on the sealing ring.

Ifølge en spesiell utforming omfatter huset dessuten et forsterkningsinnlegg 11 i form av en metallring. According to a special design, the housing also includes a reinforcement insert 11 in the form of a metal ring.

Ifølge et ytterligere forslag består huset av polypropylen. According to a further proposal, the housing consists of polypropylene.

Tegningens figur 1 viser I et halvt snitt en radial-akseltetningsring ifølge oppfinnelsen. Denne består av et vilkårlig tetningselement ifølge tysk utlegningsskrift nr. 23 39 353, på hvilket det umiddelbart er tiiformet et hus 1 av kunststoff. Figure 1 of the drawing shows, in half section, a radial shaft sealing ring according to the invention. This consists of an arbitrary sealing element according to German specification no. 23 39 353, on which a housing 1 of synthetic material is immediately formed.

Fremstillingen kan gjennomføres f.eks. på følgende måte: The production can be carried out e.g. in the following way:

Den fiberholdige tetningsdel blir utstanset av en tilsvarende banevare I form av sirkelringformede platiner. I et sprøyte-verktøy blir den midlere del av denne platine som senere overtar tetningsvirkningen tildekket, mens dens ytre kant rager inn i formens hulrom. Etter lukkingen av formen blir hulrommet utsprøytet med en termoplast eller en duroplast, f.eks. polypropylen,hvorved huset til radial-akseltetnings-ringen er dannet. The fiber-containing sealing part is punched out of a corresponding web product in the form of circular ring-shaped plates. In a spray tool, the middle part of this plate, which later takes over the sealing effect, is covered, while its outer edge projects into the cavity of the mold. After the mold is closed, the cavity is sprayed with a thermoplastic or a duroplast, e.g. polypropylene, by which the housing of the radial shaft sealing ring is formed.

Det fremkommer derved en intim forankring av tetningselementet i huset. Blir det som tetningsdel benyttet florstoffer eller vevnader, så er deres porer etter sprøyteprosessen fullstendig utfylt av husets kunststoff i området ved hustilslutningen. This results in an intimate anchoring of the sealing element in the house. If non-woven materials or woven fabrics are used as sealing parts, their pores are completely filled with the house's plastic in the area of the house connection after the spraying process.

Fig. 2 viser en tilsvarende radial-akseltetningsring, hvis hus er forsterket ved hjelp av en støttering 11 av metall eller et annet kunststoff. Slike ringer blir innlagt i formen og omsprøytet sammen med tetningsdelen. Fig. 2 shows a corresponding radial shaft sealing ring, the housing of which is reinforced by means of a support ring 11 made of metal or another synthetic material. Such rings are placed in the mold and resprayed together with the sealing part.

Anvendelsen av slike forsterkningsinnlegg kan være særlig fordelaktig ved større dimensjoner, hvis det kan forutsettes at disse ved innbyggingen kan drives inn ved hjelp av enkle slagverktøy i huspasningen som skal oppta dem. Den spesielle utførelsestype og anordning i eller på tetningshuset 1 blir derved bestemt av hensiktsmessige synspunkter. The use of such reinforcement inserts can be particularly advantageous in the case of larger dimensions, if it can be assumed that these can be driven into the house fitting during installation using simple impact tools in the housing fitting that will accommodate them. The particular design type and arrangement in or on the sealing housing 1 is thereby determined by appropriate points of view.

Den spesielle fordel ved tetningselementet ifølge oppfinnelsen må ses deri at dette kan fremstilles vesentlig billigere enn alle lignende kjente tetninger med sammen-lignbare egenskaper. The special advantage of the sealing element according to the invention must be seen in the fact that it can be produced significantly cheaper than all similar known seals with comparable properties.

Claims (3)

1. Radial-akseltetningsring, bestående av en fleksibel tetningsring og et hus (1) av kunststoff, som er utformet i ett stykke med tetningsringen (2), karakterisert ved at tetningsringen (2) består av florstoff eller vevnad med ut fra løpeflaten fremstående fibre, at huset består av en termoplast, en herdeplast eller polyuretan og at husmaterialet fullstendig utfyller tetningsringens porer i området ved hustilslutriingen.1. Radial shaft sealing ring, consisting of a flexible sealing ring and a housing (1) made of synthetic material, which is formed in one piece with the sealing ring (2), characterized in that the sealing ring (2) consists of fleece or woven fabric with fibers protruding from the running surface, that the housing consists of a thermoplastic, a thermosetting plastic or polyurethane and that the housing material completely fills the sealing ring's pores in the area of the housing seal. 2. Radial-akseltetningsring ifølge krav 1, karakterisert ved at huset omfatter et forsterkningsinnlegg (11) av metall eller kunststoff med hensiktsmessig tverrsnitt og hensiktsmessig anordning.2. Radial shaft sealing ring according to claim 1, characterized in that the housing comprises a reinforcement insert (11) of metal or plastic with an appropriate cross-section and an appropriate arrangement. 3. Radial-akseltetningsring ifølge krav 1 og 2, karakterisert ved at kunststoffhuset til tetningen består av polypropylen.3. Radial shaft sealing ring according to claims 1 and 2, characterized in that the plastic housing of the seal consists of polypropylene.
NO764069A 1976-01-27 1976-11-29 RADIAL-oil seal. NO160023C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19767602075 DE7602075U (en) 1976-01-27 Radial shaft seal

Publications (3)

Publication Number Publication Date
NO764069L NO764069L (en) 1977-07-28
NO160023B true NO160023B (en) 1988-11-21
NO160023C NO160023C (en) 1989-03-01

Family

ID=6661299

Family Applications (1)

Application Number Title Priority Date Filing Date
NO764069A NO160023C (en) 1976-01-27 1976-11-29 RADIAL-oil seal.

Country Status (7)

Country Link
JP (1) JPS5944539B2 (en)
BR (1) BR7700484A (en)
FR (1) FR2339791A1 (en)
GB (1) GB1535707A (en)
IT (1) IT1073575B (en)
NO (1) NO160023C (en)
SE (1) SE418324B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0131215Y2 (en) * 1984-09-28 1989-09-25
JPS61129967U (en) * 1985-01-31 1986-08-14
GB8616054D0 (en) * 1986-07-01 1986-08-06 Dowty Seals Ltd Seals
JPH0732470U (en) * 1993-11-15 1995-06-16 三菱重工業株式会社 Ultra low temperature gas generator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2227771A (en) * 1939-10-21 1941-01-07 Victor Mfg And Gasket Company Oil seal with variable shell

Also Published As

Publication number Publication date
IT1073575B (en) 1985-04-17
JPS5944539B2 (en) 1984-10-30
BR7700484A (en) 1977-10-04
SE7700707L (en) 1977-07-28
FR2339791B1 (en) 1983-08-19
FR2339791A1 (en) 1977-08-26
SE418324B (en) 1981-05-18
GB1535707A (en) 1978-12-13
JPS5292054A (en) 1977-08-03
NO764069L (en) 1977-07-28
NO160023C (en) 1989-03-01

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