DE944297C - Lip seal sealing against overpressure and underpressure for piston rods of pressure medium working cylinders, in particular pneumatic door lock cylinders - Google Patents
Lip seal sealing against overpressure and underpressure for piston rods of pressure medium working cylinders, in particular pneumatic door lock cylindersInfo
- Publication number
- DE944297C DE944297C DEW9577A DEW0009577A DE944297C DE 944297 C DE944297 C DE 944297C DE W9577 A DEW9577 A DE W9577A DE W0009577 A DEW0009577 A DE W0009577A DE 944297 C DE944297 C DE 944297C
- Authority
- DE
- Germany
- Prior art keywords
- seal
- intermediate piece
- cylinders
- hose
- piston rod
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
Aufgabe der Erfindung ist die Abdichtung von Druckmittel-Arbeitszylindern an der Kolbenstange, die ohne Verwendung eines Kolbenstangenführungsrohres schwenkbar am Kolben gelagert ist. Dies ist z. B. bei pneumatischen Türschließzylindern der Fall. Die Dichtung muß dann radial auslenkbar sein, und sie darf sidh dabei unter dem Druck des im Arbeitszylinder wirksamen Druckmittels nicht nennenswert verformen.The object of the invention is to seal pressure medium working cylinders on the piston rod, which can be pivoted without using a piston rod guide tube is mounted on the piston. This is e.g. B. with pneumatic door lock cylinders Case. The seal must then be able to be deflected radially, and it may be under the pressure of the pressure medium effective in the working cylinder does not deform appreciably.
Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß der Einspannflansch und-die Lippe der Dichtung durch Einschaltung eines schlauchartigen Zwischenstückes gegeneinander versetzt sind.This object is achieved according to the invention in that the clamping flange and the lip of the seal by including a hose-like intermediate piece are offset from one another.
Einige Ausführungsbeispiele des Erfindungsgegenstandes sind in der Zeichnung im Längsmittelschnitt durch die Dichtung und den angrenzenden Zylinderteil dargestellt.Some embodiments of the subject invention are in the Drawing in the longitudinal center section through the seal and the adjacent cylinder part shown.
Ein Anwendungsbeispiel einer Schwenkdichtung mit Cordeinlage zeigt Fig. i mit der Kolbenstange in Mittelstellung und Fig. 2 mit der Kolbenstange in Schwenkstellung. In Fig.3 ist ein Ausführungsbeispiel einer Schwenkdichtung dargestellt, bei der der größere Teil des schlauchartigen Zwischenstückes von einer metallischen Hülse ummantelt ist. Ein kleines nicht ummanteltes Stück wird nur von elastischem Material gebildet, so daß von diesem die durch die Schwenkbewegung hervorgerufenen elastischen Verformungen aufgenommen werden können, ohne daß eine unzulässige Aufblähung durch den Innendruck auftritt.An application example of a swivel seal with a cord insert is shown Fig. I with the piston rod in the middle position and Fig. 2 with the piston rod in Swivel position. In Figure 3 an embodiment of a swivel seal is shown, in which the larger part of the hose-like intermediate piece is made of a metallic one Sleeve is sheathed. A small, uncovered piece will only be made of elastic Material formed so that the caused by the pivoting movement of this elastic deformations can be absorbed without undue inflation occurs due to the internal pressure.
Statt der metallischen Hülse könnte auch eine elastische Schraubenfeder, wie sie bei Druckschläuchen üblich ist, das Schlauchstück auf seiner ganzen Länge umfassen und die vom Innendruck herrührenden Kräfte aufnehmen, ohne die Elastizität wesentlich zu verringern.Instead of the metallic sleeve, an elastic helical spring, as is usual with pressure hoses, the hose section along its entire length include and absorb the forces resulting from the internal pressure, without the elasticity to decrease significantly.
In Fig. 4 ist ein Ausführungsbeispiel gezeichnet, bei dem das Dichtungselement topfartig ausgebildet ist und wie bei Simmerringen in der Nähe der Dichtungslippe einen Versteifungsring 5 hat. Der Flansch 6 der Topfdichtung ist im Gehäuse zwischen zwei Ringscheiben 7,8 eingespannt, von denen die im Druckraum liegende, 8, so ausgebildet ist, daß sie bei Verschwenkungen der Kolbenstange als Anlage und Endbegrenzung für den freien Teil des Dichtungsflansches 6 dient. Die radialen Druckkräfte werden von einem über das Zwischenstück geschobenen metallischen Topf aufgenommen, der mit -seiner .Bördelung 9 in eine Ringsicke io der außerhalb des Druckraumes eingespannten Ringscheibe 7 eingehängt ist.In FIG. 4, an exemplary embodiment is drawn in which the sealing element is designed like a pot and, as in Simmerrings, has a stiffening ring 5 near the sealing lip. The flange 6 of the cup seal is clamped in the housing between two ring disks 7 , 8, of which the 8 in the pressure chamber is designed so that it serves as an abutment and end limit for the free part of the sealing flange 6 when the piston rod is pivoted. The radial pressure forces are absorbed by a metallic pot pushed over the intermediate piece, which is hung with its flanging 9 in an annular bead 10 of the annular disk 7 clamped outside the pressure chamber.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW9577A DE944297C (en) | 1952-09-28 | 1952-09-28 | Lip seal sealing against overpressure and underpressure for piston rods of pressure medium working cylinders, in particular pneumatic door lock cylinders |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW9577A DE944297C (en) | 1952-09-28 | 1952-09-28 | Lip seal sealing against overpressure and underpressure for piston rods of pressure medium working cylinders, in particular pneumatic door lock cylinders |
Publications (1)
Publication Number | Publication Date |
---|---|
DE944297C true DE944297C (en) | 1956-06-14 |
Family
ID=7594126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEW9577A Expired DE944297C (en) | 1952-09-28 | 1952-09-28 | Lip seal sealing against overpressure and underpressure for piston rods of pressure medium working cylinders, in particular pneumatic door lock cylinders |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE944297C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1276504B (en) * | 1963-04-03 | 1968-08-29 | Gunther Sasse | Sealing of the closer axis of a floor door closer protruding from a housing |
DE3337559A1 (en) * | 1983-10-15 | 1985-05-02 | Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen | Arrangement for delivering a pipeline from a working chamber plunging under the surface of a body of water |
DE3817776A1 (en) * | 1988-05-26 | 1989-12-07 | Bauer Fritz & Soehne Ohg | GAS SPRING |
US4949981A (en) * | 1986-08-13 | 1990-08-21 | Kioritz Corporation | Oil seal |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE479552C (en) * | 1929-07-18 | Koerting Akt Ges Geb | Sealing ring | |
DE530016C (en) * | 1931-07-20 | Karl Ludwig Lanninger | Seal for quick joint pipe couplings | |
DE716359C (en) * | 1939-12-02 | 1942-01-17 | Harry Sauveur Dipl Ing | Composite flexible skin for the elastic closure of rooms, especially acid pumps |
DE801006C (en) * | 1948-12-08 | 1950-12-18 | Knorr Bremse Gmbh | Cylinder for pressure medium brakes, in particular vehicle brakes |
-
1952
- 1952-09-28 DE DEW9577A patent/DE944297C/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE479552C (en) * | 1929-07-18 | Koerting Akt Ges Geb | Sealing ring | |
DE530016C (en) * | 1931-07-20 | Karl Ludwig Lanninger | Seal for quick joint pipe couplings | |
DE716359C (en) * | 1939-12-02 | 1942-01-17 | Harry Sauveur Dipl Ing | Composite flexible skin for the elastic closure of rooms, especially acid pumps |
DE801006C (en) * | 1948-12-08 | 1950-12-18 | Knorr Bremse Gmbh | Cylinder for pressure medium brakes, in particular vehicle brakes |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1276504B (en) * | 1963-04-03 | 1968-08-29 | Gunther Sasse | Sealing of the closer axis of a floor door closer protruding from a housing |
DE3337559A1 (en) * | 1983-10-15 | 1985-05-02 | Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen | Arrangement for delivering a pipeline from a working chamber plunging under the surface of a body of water |
US4949981A (en) * | 1986-08-13 | 1990-08-21 | Kioritz Corporation | Oil seal |
DE3817776A1 (en) * | 1988-05-26 | 1989-12-07 | Bauer Fritz & Soehne Ohg | GAS SPRING |
US4946143A (en) * | 1988-05-26 | 1990-08-07 | Fritz Bauer & Sohne Ohg | Gas spring |
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