CH315264A - Pressure medium working device, in particular for pneumatic door closers - Google Patents
Pressure medium working device, in particular for pneumatic door closersInfo
- Publication number
- CH315264A CH315264A CH315264DA CH315264A CH 315264 A CH315264 A CH 315264A CH 315264D A CH315264D A CH 315264DA CH 315264 A CH315264 A CH 315264A
- Authority
- CH
- Switzerland
- Prior art keywords
- pressure medium
- working device
- intermediate piece
- cylinder
- flange
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3224—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip capable of accommodating changes in distances or misalignment between the surfaces, e.g. able to compensate for defaults of eccentricity or angular deviations
-
- 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
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Description
Druckmittel-Arbeitsvorrichtung, insbesondere für pneumatische Türschliesser Aufgabe der Erfindung ist die Abdich- t.un ,. von Druekmittel-Arbeitszylindern an der Kolbenstange, die schwenkbar am Kolben ge lagert ist. Dies ist z. B. bei pneumatischen Türschliessern der Fall.
Das Dichtungselement muss in solchen Fällen radial auslenkba.r sein, und es darf sich unter dem Druck des im Ar beitszylinder wirksamen Druckmittels nicht so verformen, da.ss die Dichtwirkung beein trächtigt wird.
Diese Aufgabe wird nach der Erfindung dadurch gelöst, dass der Einspannflansch und die Lippe des Dichtungselementes durch Ein- sch.altanc eines schlauchartigen Zwischen stückes axial gegeneinander versetzt sind.
Einige Ausführungsbeispiele des Erfin- dangs;gegenstandes sind auf der Zeichnung im Längsmitt.elachnitt durch die Dichtung und den angrenzenden Zylinderteil ,dargestellt.
Ein Beispiel eines Schwenkdichtungsele- mentes mit Cordeinlage in seinem zwischen Einspannflanseh 6 und Dichtlippe (Dichtlip pen) 3 befindlichen schlauchartigen Zwi schenstück 4 aus Gummi zeigt Fig. 1 mit. der Kolbenstange in Koaxialatellung zum Zylin der und Fig. 2 mit der Kolbenstange in aus geschwenkter Stellung.
In Fig. 3 ist ein Ausführungsbeispiel einer Dichtung dargestellt, bei der der längere Teil des sehlauehartigen Zwischenstückes 4 aus Gummi von einer metallischen Hülse 2 um- rnantelt ist. Durch den kürzeren nicht um mantelten Teil des Zwischenstückes 4 können die durch die Schwenkbewegung hervorgeru fenen elastischen Verformungen aufgenom men werden, ohne dass eine unzulässige Auf blähung durch den Innendruck auftritt.
Statt der festen metallischen Hülse könnte auch eine elastische Schraubenfeder, wie sie bei Druckschläuchen üblich ist, das Schlauch- , stück .aus Gummi auf seiner ganzen Länge umfassen und .die vom Innendruck herrühren den Kräfte aufnehmen, ohne die Elastizität unerwünscht zu verringern.
In Fig. 4 ist ein Ausführungsbeispiel ge zeichnet, bei dem das Dichtungselement topf artig ausgebildet ist und wie bei den unter der Marke Simmering bekannten Ringen in der Nähe der Dichtungslippe 3 einen Versteifungsring 5 hat.
Der Flansch 6 des Topfdichtungselementes ist im Gehäuse zw i- schen zwei Ringscheiben 7, 8 eingespannt, von denen die im Druckraum liegende 8 so kegelförmig nach innen, das heisst gegen den Kolben hin abgebogen ist, da.ss sie bei Ver- schwenkungen der Kolbenstange die mit diesen Versehwenkungen verbundenen Bewe gungen des Blechmantels 1 zulässt und als Anlage und Endbegrenzung für den freien Teil des Dichtungsflansches 6 dient:
Der die radialen Druckkräfte aufnehmende, über das Zwischenstück 4 geschobene Blechmantel 1 ist mit seiner Bördelung 9 beim Flansch 6 in eine Ringsicke 10 der ausserhalb des Druck raumes eingespannten Ringscheibe 7 einge hängt. Man erkennt aus der Zeichnung, dass dank des Zwischenstückes 4 der Flansch 6 und die Lippe oder Lippen 3 axial gegeneinander ver setzt werden. Das Dichtungselement ist im übrigen durch den Arbeitsluftdruck nicht so verformbar, dass die Dichtwirkung beeinträch tigt wird.
Pressure medium working device, in particular for pneumatic door closers The object of the invention is the sealing. of pressure medium working cylinders on the piston rod, which is pivotably mounted on the piston ge. This is e.g. B. the case with pneumatic door closers.
In such cases, the sealing element must be radially deflectable and it must not deform under the pressure of the pressure medium effective in the working cylinder in such a way that the sealing effect is impaired.
This object is achieved according to the invention in that the clamping flange and the lip of the sealing element are axially offset from one another by switching on a hose-like intermediate piece.
Some embodiments of the invention are shown on the drawing in the longitudinal center section through the seal and the adjacent cylinder part.
An example of a swivel sealing element with a cord insert in its hose-like intermediate piece 4 made of rubber located between the clamping flange 6 and sealing lip (sealing lip) 3 is shown in FIG. the piston rod in coaxial position to the cylinder and Fig. 2 with the piston rod in a pivoted position.
In FIG. 3, an exemplary embodiment of a seal is shown in which the longer part of the rubber claw-like intermediate piece 4 is encased in a metallic sleeve 2. Due to the shorter, uncoated part of the intermediate piece 4, the elastic deformations caused by the pivoting movement can be accommodated without an inadmissible inflation occurring due to the internal pressure.
Instead of the solid metallic sleeve, an elastic coil spring, as is common with pressure hoses, could include the hose piece. Made of rubber over its entire length and absorb the forces resulting from the internal pressure without undesirably reducing the elasticity.
In Fig. 4, an embodiment is drawn in which the sealing element is pot-like and has a stiffening ring 5 in the vicinity of the sealing lip 3 as in the rings known under the brand Simmering.
The flange 6 of the cup sealing element is clamped in the housing between two ring disks 7, 8, of which the 8 lying in the pressure chamber is bent conically inward, that is towards the piston, so that it swivels the piston rod allows the movements of the sheet metal jacket 1 associated with these misalignments and serves as a system and end limit for the free part of the sealing flange 6:
The sheet metal jacket 1, which absorbs the radial pressure forces and is pushed over the intermediate piece 4, is hung with its flanging 9 at the flange 6 in an annular bead 10 of the annular disk 7 clamped outside the pressure space. It can be seen from the drawing that, thanks to the intermediate piece 4, the flange 6 and the lip or lips 3 are axially set against each other. The sealing element is not so deformable by the working air pressure that the sealing effect is taken.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE315264X | 1952-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH315264A true CH315264A (en) | 1956-08-15 |
Family
ID=6150106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH315264D CH315264A (en) | 1952-09-27 | 1953-09-09 | Pressure medium working device, in particular for pneumatic door closers |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH315264A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1119148B (en) * | 1958-02-12 | 1961-12-07 | Elisabeth Zoeller Geb Kehl | Drive device for leaves of doors or the like with a pressurized piston-cylinder drive |
EP0180278A2 (en) * | 1984-10-29 | 1986-05-07 | Stirling Thermal Motors Inc. | Yieldably mounted lubricant control assemblies for piston rods |
-
1953
- 1953-09-09 CH CH315264D patent/CH315264A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1119148B (en) * | 1958-02-12 | 1961-12-07 | Elisabeth Zoeller Geb Kehl | Drive device for leaves of doors or the like with a pressurized piston-cylinder drive |
EP0180278A2 (en) * | 1984-10-29 | 1986-05-07 | Stirling Thermal Motors Inc. | Yieldably mounted lubricant control assemblies for piston rods |
EP0180278A3 (en) * | 1984-10-29 | 1989-09-06 | Stirling Thermal Motors Inc. | Yieldably mounted lubricant control assemblies for piston rods |
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