DE2255951A1 - PTFE sealing ring for insertion into a groove - by forming a toothing or corrugation in the ring - Google Patents

PTFE sealing ring for insertion into a groove - by forming a toothing or corrugation in the ring

Info

Publication number
DE2255951A1
DE2255951A1 DE2255951A DE2255951A DE2255951A1 DE 2255951 A1 DE2255951 A1 DE 2255951A1 DE 2255951 A DE2255951 A DE 2255951A DE 2255951 A DE2255951 A DE 2255951A DE 2255951 A1 DE2255951 A1 DE 2255951A1
Authority
DE
Germany
Prior art keywords
ring
corrugation
groove
toothing
forming
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
DE2255951A
Other languages
German (de)
Other versions
DE2255951B2 (en
DE2255951C3 (en
Inventor
Gerhard Klett
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.)
FRIEDRICH STAMP KG
Original Assignee
FRIEDRICH STAMP 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 FRIEDRICH STAMP KG filed Critical FRIEDRICH STAMP KG
Priority to DE19722255951 priority Critical patent/DE2255951C3/en
Priority claimed from DE19722255951 external-priority patent/DE2255951C3/en
Publication of DE2255951A1 publication Critical patent/DE2255951A1/en
Publication of DE2255951B2 publication Critical patent/DE2255951B2/en
Application granted granted Critical
Publication of DE2255951C3 publication Critical patent/DE2255951C3/en
Expired legal-status Critical Current

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

Landscapes

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

Abstract

Sealing ring of low-elasticity e.g. PTFE is made elastic enough for insertion into a groove of a shaft or bore by provision of a radial toothing or corrugation. Preferably this is regular or irregular, of any desired form, and may be only part of the circumference.

Description

Dichtring Die vorliegende Erfindung bezieht sich auf die Form und Ausführung von Dichtringen aus wenig elastischem Material wie z.B. aus PTFE, die in einer Wellen- oder Bohrungsnut liegend radial abdichten sollen. Sealing ring The present invention relates to the shape and Design of sealing rings made of less elastic material such as PTFE, which should seal radially lying in a shaft or bore groove.

Für Konstruktionsteile-mit derartigen Ringnuten werden bislang mit bestem Erfolg uiele Arten elast'ischer Dichtringe oder O-Ringe verwendet, die sich zum Einbringen in die Ringnuten ausreichend dehnen lassen bzw. eine ausreichende Elastizität haben.For structural parts with such ring grooves are so far with Many types of elastic sealing rings or O-rings have been used with great success Allow it to be stretched sufficiently for insertion into the ring grooves or a sufficient one Have elasticity.

Sobald nun gegen Medien abzudichten ist, welche bislang bekannte elastische Dichtringe oder O-Ringe angreifen, auflösen oder quellen lassen, gibt es zumeist materialmäßig Ausweichmöglichkeiten auf solche Dichtringe oder O-Ringe aus wenig elastischen Materialien wie z.B. PTFE. Diese Ausweichmöglichkeit besteht aber nicht bei Wsllen- oder Bohrungsnuten, da solche wenig elastischen Materialien sich nicht soweit dehnen lassen bzw. keine ausreichende Elastizität haben, als daß sie in die Nuten eingebracht werden könnten.As soon as it is now to be sealed against media, which previously known elastic There are mostly sealing rings or O-rings that attack, dissolve or swell In terms of material, there are little alternatives to such sealing rings or O-rings elastic materials such as PTFE. However, there is no alternative with shaft or bore grooves, since such less elastic materials are not let stretch to the extent or not have sufficient elasticity than that they are in the Grooves could be introduced.

Man hilft sich dann in solchen Fällen durch Teilung der Werkstücke in der Nut, so daß die wenig elastischen Dichtringe ohne Dehnung eingeschoben werden können,worauf durch ein zweites Werkstück wieder eine Art Nut gebildet wird. Dies läßt sich aber nur selten durchführen und wenn, ist es eine aufwendige Lösung.In such cases, you can help yourself by dividing the workpieces in the groove so that the less elastic sealing rings can be inserted without stretching can, whereupon a kind of groove is formed again by a second workpiece. this but can only rarely be carried out and when it is, it is a costly solution.

Bei den geschilderten Schwierigkeiten bietet der erfindungsgemäß vorliegende radial gezahnte oder gewellte Ring aus wenig elastischem Material die Lösung, denn durch die radiale Zahnung oder Wellung erhält der Ring eine ausreichende Elastizität und kann beispielsweise über eine Welle in eine darin befindliche Nut eingebracht werden, wonac h der Ring mit ursprnglichem Umfang seine Dichtungsfunktion übernehmen kann0 Die radiale Zahnung oder Wellung kann dabei über den gesamten Umfang erfolgen, kann aber ebenso nur auf einem Teil des Umfanges ausgeführt sein, eben nur soweit, daß eine ausreichende Elastizität vorliegt und damit eine ausreichende Dehnungsfähigkeit. Die Form und die Bemaßung der Zahnung oder Wellung ist dabei belanglos und kann sich nach fertigungstechnischen Erfordernissen richten.The present invention offers the described difficulties Radially toothed or corrugated ring made of less elastic material is the solution, because The radial teeth or corrugation give the ring sufficient elasticity and can, for example, be introduced into a groove located therein via a shaft become, after which the ring take over its sealing function with its original scope can0 The radial serration or corrugation can take place over the entire circumference, but can also only be carried out on a part of the circumference, just as far as that there is sufficient elasticity and thus sufficient extensibility. The shape and dimensions of the toothing or corrugation is irrelevant and can are based on manufacturing requirements.

Patentansprüche: g Dichtringe aus wenig elastischen Materialien wie z.B.Claims: g Sealing rings made of less elastic materials such as e.g.

PTFE dadurch gekennzeichnet, daß durch eine radiale Zahnung oder Wallung eine für die Einbringung in eine Wellen- oder Bohrunganut erforderliche uorübergehende Dehnung (Elastizität) erreicht wird. PTFE characterized in that by a radial toothing or Boil a necessary for the introduction into a shaft or bore groove Temporary stretching (elasticity) is achieved.

2) Dichtringe nach Anspruch 1), dadurch gekennzeichnet, daß die Zahnung oder Wellung in beXiebigsr For-m.und in beliebigen Maßen, regelmäßig pder unregelmäßig ausgeführt sein kann.2) Sealing rings according to claim 1), characterized in that the teeth or corrugation in any shape or size, regular or irregular can be executed.

Claims (1)

3) Dichtringe nach Anspruch 1) und 2), dadurch gekennzeichnet, daß diese Zahnung oder Wellung nur über einen Teil des Umfanges ausgeführt wird.3) Sealing rings according to claim 1) and 2), characterized in that this toothing or corrugation is only carried out over part of the circumference. Lee re i teLee rode
DE19722255951 1972-11-15 Sealing ring Expired DE2255951C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19722255951 DE2255951C3 (en) 1972-11-15 Sealing ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722255951 DE2255951C3 (en) 1972-11-15 Sealing ring

Publications (3)

Publication Number Publication Date
DE2255951A1 true DE2255951A1 (en) 1974-05-22
DE2255951B2 DE2255951B2 (en) 1976-09-30
DE2255951C3 DE2255951C3 (en) 1977-05-05

Family

ID=

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429949A1 (en) * 1978-06-28 1980-01-25 Festo Maschf Stoll G Three-way spool shuttle valve - has zigzag shaped seals to reduce friction loads
EP0161362A1 (en) * 1984-04-23 1985-11-21 Microdot Inc. Seal assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429949A1 (en) * 1978-06-28 1980-01-25 Festo Maschf Stoll G Three-way spool shuttle valve - has zigzag shaped seals to reduce friction loads
EP0161362A1 (en) * 1984-04-23 1985-11-21 Microdot Inc. Seal assembly

Also Published As

Publication number Publication date
DE2255951B2 (en) 1976-09-30

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee