EP0113790A1 - Pressure cylinder with a longitudinally slotted barrel closed at both ends - Google Patents

Pressure cylinder with a longitudinally slotted barrel closed at both ends Download PDF

Info

Publication number
EP0113790A1
EP0113790A1 EP83100256A EP83100256A EP0113790A1 EP 0113790 A1 EP0113790 A1 EP 0113790A1 EP 83100256 A EP83100256 A EP 83100256A EP 83100256 A EP83100256 A EP 83100256A EP 0113790 A1 EP0113790 A1 EP 0113790A1
Authority
EP
European Patent Office
Prior art keywords
piston
transmission element
pin
cylinder
cylinder 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.)
Granted
Application number
EP83100256A
Other languages
German (de)
French (fr)
Other versions
EP0113790B1 (en
Inventor
Reinhard Lipinski
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.)
Norgren Martonair Europa GmbH
Original Assignee
Proma Produkt- und Marketing-Gesellschaft Mbh
Proma Prod & Marketing GmbH
Proma Produkt- und Marketing 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 Proma Produkt- und Marketing-Gesellschaft Mbh, Proma Prod & Marketing GmbH, Proma Produkt- und Marketing GmbH filed Critical Proma Produkt- und Marketing-Gesellschaft Mbh
Priority to DE8383100256T priority Critical patent/DE3370172D1/en
Priority to AT83100256T priority patent/ATE25869T1/en
Priority to EP83100256A priority patent/EP0113790B1/en
Priority to US06/563,028 priority patent/US4519297A/en
Priority to BR8400087A priority patent/BR8400087A/en
Priority to JP59003699A priority patent/JPS59137608A/en
Publication of EP0113790A1 publication Critical patent/EP0113790A1/en
Application granted granted Critical
Publication of EP0113790B1 publication Critical patent/EP0113790B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/082—Characterised by the construction of the motor unit the motor being of the slotted cylinder type

Definitions

  • the invention relates to a pressure medium cylinder with a longitudinally slotted cylinder tube which is closed at the end, in which a sealed piston is guided so as to be longitudinally displaceable and the longitudinal slot of which is sealed on both sides of the piston by an internal flexible sealing tape which is located in a pressure-free area of the piston between two piston / cylinder seals a force transmission element protruding through the longitudinal slot and directly connected to the piston is passed, the force transmission element being guided longitudinally on at least two parallel guideways of an external parallel guide by means of a bow-like guide part partially encompassing the cylinder tube, the guideways of which on both sides of the longitudinal slot are directly on the outside of the cylinder tube are arranged.
  • Such a pressure medium cylinder is characterized in that the force transmission element, depending on the respective application, transverse forces or moments occurring can take up because the force transmission element is supported on the guideways.
  • the guide tracks lying on both sides of the longitudinal slot on the outside of the cylinder tube also prevent, in cooperation with the bow-like guide part which partially surrounds the cylinder tube, an undesirable widening of the longitudinal slot of the cylinder tube which occurs at high internal pressures.
  • the guidance of the power transmission element through the two parallel guideways of the external parallel guide must have a certain play for reasons of ease of movement. This means that the force transmission element can carry out a small limited tilting movement with respect to the cylinder tube axis under the action of transverse forces or moments, or it also suffers a certain elastic deformation under very high loads. Since the flexible sealing tape sealing the longitudinal slot, as mentioned at the outset, is lifted off the longitudinal slot in the unpressurized area between the two piston / cylinder seals, the two piston cylinder seals must have a certain axial minimum distance, which in turn means that the overall piston length has a certain minimum value cannot fall short.
  • the object of the invention is therefore to remedy this and to create a pressure medium cylinder with a longitudinally slotted cylinder tube which is closed at the end and which is largely independent of the load-dependent slight tilting movements of the force transmission element or of small, operationally occurring deflections of the cylinder tube.
  • the pressure medium cylinder mentioned at the outset is characterized according to the invention in that the piston has two pistons arranged on both sides of the power transmission element and at least one each Has piston / cylinder seal carrying piston parts and that the two piston parts are connected to the power transmission element with limited radial movement.
  • the force transmission element is guided perfectly with very little play by means of the parallel guide on the outside of the cylinder tube.
  • the piston itself can achieve a tolerance compensation with respect to the inner wall of the cylinder tube and can always adjust itself so that no lateral forces are exerted on the piston / cylinder seals.
  • the piston is therefore self-centering. With slight deflections of the cylinder tube, it can adapt itself to the curvature of the cylinder tube without losing its self-centering.
  • the longitudinal slot of the cylinder tube experiences a certain widening, albeit a very small one, but one that does exist, which leads to a corresponding change in shape of the cross section of the cylinder tube bore. Since the two piston parts are connected to the force transmission element in such a way that they can move in a radially limited manner, the soft piston / cylinder seals can adapt to this change in shape without being hindered by a rigid piston.
  • the two piston parts each consist of plastic material.
  • the pins arranged on the two piston parts can be connected coaxially to one another; however, the arrangement can also be such that the two piston parts are connected to one another by an integral pin.
  • the axial coupling of the two piston parts with the force transmission element can be brought about in a simple manner in that the two piston parts are each axially supported via a shoulder against the force transmission element engaging between them.
  • the pin or the pin can be connected to the force transmission element via at least one transverse pin penetrating the receiving opening, the transverse pin running with a corresponding clearance either through a corresponding transverse bore of the pin or pins, or arranged so as to engage in an open transverse groove of the assigned pin is.
  • the pins or the pin can be positively connected to the force transmission element via at least one coupling device with lugs of the other part engaging in corresponding recesses in one part.
  • the force transmission element is fork-shaped, at least in the area of the receiving opening, with two legs laterally delimiting the longitudinally slotted receiving opening, as a result of which manufacture and assembly are simplified, while the flexible sealing tape is guided directly through the receiving opening and is simply inserted laterally into the latter can.
  • the pressure medium cylinder shown in FIG. 1, 2 has a cylinder tube 2 containing a cylindrical cylinder bore 1, the cylinder bore 1 of which is closed at the end by two covers 3 screwed to the cylinder tube 2.
  • One of the fastening screws is visible at 4 in FIG. 1.
  • a piston 5 is guided in a longitudinally displaceable manner and is directly connected to a force transmission element 6, which is guided to the outside with a web-like part 7 through a longitudinal slot 8 of the cylinder tube 2.
  • the force transmission element 6 is integrally formed with the cylinder tube 2 partially encompassing bow-like part 9 of substantially U-shaped cross-sectional shape, the two legs 10 of which each carry a guide bar 11 on their inside.
  • the guide strips 11 are guided on both sides of the longitudinal slot 8 directly on the outer wall of the cylinder tube 2, with parallel cross-sectionally triangular guide tracks 12.
  • the guideways 12 are arranged in the area between the outer edge of the longitudinal slot 8 and the plane of symmetry containing the piston axis and running at right angles to the longitudinal slot 8, which is indicated at 13.
  • the longitudinal slot 8 is sealed on both sides of the piston 5 by an internal, flexible sealing tape 14 which is anchored at the ends to the covers 3 and which is guided in the region of the piston 5 under the web-like part 7 of the force transmission element 6.
  • This area is located between two axially spaced from one another on the piston 5 arranged piston / Zylinderdichtun q s in the form of soft sealing collars 15. It is depressurized, so that the longitudinal slot 8 in this area for the passage of the web-like member 7, as shown in FIG 1 can be opened without loss of pressure medium.
  • the sealing tape 14 seals the longitudinal slot 8 on both sides of the piston 5, so that when a pressure medium, for example compressed air, is applied to the cylinder bore 1 via pressure medium channels 18 provided in the covers 3, the piston 5 executes a corresponding longitudinal movement in the cylinder bore 1 .
  • a pressure medium for example compressed air
  • the force transmission element 6 then has on the web-like part 7 a fork-shaped part 20, the two legs of which laterally delimit a longitudinally slotted receiving opening 21, through which the sealing tape 14 is simultaneously passed.
  • the inner wall of the receiving opening 21 is partially cylindrical (Fig. 2); in the area of the sealing tape 14, it is provided with a groove-like depression which receives the sealing tape 14.
  • the piston 5 has two piston parts 22 arranged symmetrically on both sides of the fork-shaped part 20 of the force transmission element 6 on, each made of plastic material.
  • a sealing sleeve 15 is inserted, while a frustoconical cross section 24 adjoining the cylindrical section 23 ends in a shoulder 25, via which the respective piston part 22 axially against the forked part 20 of the Power transmission element 6 is supported.
  • a damping bore 250 which ends axially in each of the piston parts 22 and is closed at one end, in the end position of the piston interacts with a damping tube 260 in the manner shown in FIG. 1.
  • the two piston parts 22 are each fastened to the fork-shaped part 20 of the force transmission element 6 in a radially limited manner.
  • the arrangement in the embodiment according to FIGS. 1 to 3 is such that the two piston parts 22 each carry a coaxial projecting cylindrical pin 26 in the region of the shoulder 25, which with play in the part-cylindrical receiving opening 21 of the fork-shaped part 20 are plugged in.
  • the two piston parts 22 are axially connected to the fork-shaped part 20 by two transverse pins 27, which have the receiving opening 21 and corresponding transverse bores 28 penetrate into the pin 26.
  • the arrangement is such that the two coaxial pins 26 of the piston parts 22 each have an end in the form of an annular collar 30, while the optionally two-part fork-shaped part 20 with an annular groove 31 in the area its two legs are provided, in which the two ring collars 30 engage, so that together with the support of the shoulder 25 of the piston parts 22 on the fork-shaped part 20 a positive connection of the two piston parts 22 with the force transmission element 6 is achieved.
  • the already mentioned limited radial mobility of the two piston parts 22 is ensured by appropriate dimensioning of the annular groove 31 and the partially cylindrical receiving opening 21, as well as the diameter of the cylindrical pins 26.
  • the two piston parts 22 are connected to one another by a one-piece pin 26a integrally formed on both piston parts 22, which is connected to the fork-shaped part by a transverse pin 27 penetrating a transverse bore 28 in a manner which basically corresponds to the embodiment according to FIG 20 of the power transmission element 6 is also connected in a radially limited manner.
  • the arrangement in the 6 can also be taken in such a way that the two cylindrical pins 26 of the piston parts 22 are designed to be connectable to one another at the end.
  • one pin 26 carries, for example, a threaded connector 32, while the other pin 26 is provided with a corresponding threaded bore 33.
  • latching connection elements can also be used.
  • the two piston parts 22 are in this case axially coupled to the bow-shaped part 20 in that they are supported laterally on the fork-shaped part 20 with their annular shoulder 25, so that the pins 26 which are connected to one another act as tie rods.
  • the cross pin 27 could also be omitted in the embodiment according to FIG. 5.
  • the cylindrical pins 26 of the two piston parts are each provided with a transverse groove 34 which is open at the edge and into which a transverse pin 35 which penetrates the partially cylindrical receiving opening 21 of the fork-shaped part 20 engages.
  • a limited one radial mobility of the piston parts 22 with respect to the fork-shaped part 20 and thus the force transmission element 6 is guaranteed.
  • the pins 26 are each provided on the piston parts 22.
  • the arrangement could also be reversed, in that laterally projecting coaxial pins are arranged on the force transmission element 6 in the cylinder bore 1, on which the piston parts with a corresponding receiving opening are then placed with limited radial play but axially immovable.
  • the piston parts 22 carrying the sealing sleeves 15 are mounted with limited radial movement with respect to the force transmission element 6, the piston parts 22 with their sealing sleeves 15 are self-centering in the cylinder bore 1, and their setting cannot be impaired by tilting movements of the force transmission element which are possible within the tolerance range .
  • the piston parts 22 with their sealing sleeves 15 can adapt to the shape of the cylinder bore 1 without being impeded by rigid piston parts, which is particularly important when a certain deflection occurs in a long cylinder tube 2 or the longitudinal slot 8 experiences a certain small widening under the action of the pressure medium acting on the cylinder bore 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Packages (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

To prevent distortion of the cylinder, and free running of the motion transfer element (6) thereon, in guide tracks (12) formed on the outside of the cylinder, the piston (5) is formed in two piston parts (22, 22') connected by a piston rod or pin (26, 26', 26a, 26a', 26b, 26b', 26c, 26c', 26d, 26d'), and the motion transfer element (6) is coupled to the piston rod or pin by a pair of fork-like portions (20) surrounding the pin and permitting limited radial movement. The pin or piston rod may be somewhat flexible, or made of flexible material, for example unitary with the piston parts (22, 22') and of plastic material, or may be made in two portions or parts (22, 22'; 22a, 22a' . . . ), each individually coupled to the fork-shaped element or merely retaining the fork-shaped element in position with end shoulders (25, 25') of the piston part axially engaging the fork-shaped element and hence transferring motion to the motion transmitting element (6).

Description

Die Erfindung betrifft einen Druckmittelzylinder mit einem längsgeschlitzten, endseitig verschlossenen Zylinderrohr, in dem ein abgedichteter Kolben längsverschieblich geführt ist und dessen Längsschlitz beidseitig des Kolbens durch ein innenliegendes biegsames Dichtband abgedichtet ist, das in einem zwischen zwei Kolben-/Zylinderdichtungen liegenden drucklosen Bereich des Kolbens unter einem durch den Längsschlitz nach außen ragenden, mit dem Kolben unmittelbar verbundenen Kraftübertragungselement hindurchgeführt ist, wobei das Kraftübertragungselement mittels eines das Zylinderrohr teilweise umgreifenden bügelartigen Führungsteiles auf wenigstens zwei parallelen Führungsbahnen einer außenliegenden Parallelführung längsgeführt ist, deren Führungsbahnen zu beiden Seiten des Längsschlitzes unmittelbar auf der Außenseite des Zylinderrohres angeordnet sind.The invention relates to a pressure medium cylinder with a longitudinally slotted cylinder tube which is closed at the end, in which a sealed piston is guided so as to be longitudinally displaceable and the longitudinal slot of which is sealed on both sides of the piston by an internal flexible sealing tape which is located in a pressure-free area of the piston between two piston / cylinder seals a force transmission element protruding through the longitudinal slot and directly connected to the piston is passed, the force transmission element being guided longitudinally on at least two parallel guideways of an external parallel guide by means of a bow-like guide part partially encompassing the cylinder tube, the guideways of which on both sides of the longitudinal slot are directly on the outside of the cylinder tube are arranged.

Ein solcher Druckmittelzylinder, wie er beispielsweise in den Unterlagen der deutschen Patentanmeldung P 31 24 915.9-14 beschrieben ist, zeichnet sich dadurch aus, daß das Kraftübertragungselement, abhängig von dem jeweiligen Anwendungsfall, auftretende Querkräfte oder -momente aufnehmen kann, weil das Kraftübertragungselement auf den Führungsbahnen abgestützt ist. Die beidseitig des Längsschlitzes auf der der Außenseite des Zylinderrohres liegenden Führungsbahnen beugen auch im Zusammenwirken mit dem das Zylinderrohr teilweise umgreifenden bügelartigen Führungsteil einer bei hohen Innendrücken auftretenden unerwünschten Aufweitung des Längsschlitzes des Zylinderrohres vor.Such a pressure medium cylinder, as described, for example, in the documents of the German patent application P 31 24 915.9-14, is characterized in that the force transmission element, depending on the respective application, transverse forces or moments occurring can take up because the force transmission element is supported on the guideways. The guide tracks lying on both sides of the longitudinal slot on the outside of the cylinder tube also prevent, in cooperation with the bow-like guide part which partially surrounds the cylinder tube, an undesirable widening of the longitudinal slot of the cylinder tube which occurs at high internal pressures.

Die Führung des Kraftübertragungselementes durch die zwei parallelen Führungsbahnen der außenliegenden Parallelführung muß aus Gründen der Leichtgängigkeit ein gewisses Spiel aufweisen. Das bedeutet, daß das Kraftübertragungselement unter der Einwirkung von Querkräften oder -momenten eine kleine begrenzte Kippbewegung bezüglich der Zylinderrohrachse ausführen kann oder bei sehr großen Beanspruchungen auch eine gewisse elastische Verformung erleidet. Da das den Längsschlitz abdichtende biegsame Dichtband, wie eingangs erwähnt, in dem drucklosen Bereich zwischen den beiden Kolben-/Zylinderdichtungen von dem Längsschlitz abgehoben ist, müssen die beiden Kolbenzylinderdichtungen einen gewissen axialen Mindestabstand aufweisen, was wiederum bedeutet, daß die Kolbenlänge insgesamt einen bestimmten Mindestwert nicht unterschreiten kann. Wenn somit das Kraftübertragungselement, hervorgerufen von der Belastung, eine kleine Kippbewegung ausführt, kann diese je nach ihrer Richtung zu einer verhältnismäßig großen radialen Auslenkung der Kolbenenden führen, die durch die in der Regel als Dichtmanschetten ausgebildeten Kolbenzylinderdichtungen aufgenommen werden muß. Solche auf die Dichtmanschetten wirkenden Seitenkräfte sind aber deshalb unerwünscht, weil sie zu einer ungleichmäßigen Beanspruchung der Dichtmanschetten führen und deren Lebensdauer ungünstig beinflussen können.The guidance of the power transmission element through the two parallel guideways of the external parallel guide must have a certain play for reasons of ease of movement. This means that the force transmission element can carry out a small limited tilting movement with respect to the cylinder tube axis under the action of transverse forces or moments, or it also suffers a certain elastic deformation under very high loads. Since the flexible sealing tape sealing the longitudinal slot, as mentioned at the outset, is lifted off the longitudinal slot in the unpressurized area between the two piston / cylinder seals, the two piston cylinder seals must have a certain axial minimum distance, which in turn means that the overall piston length has a certain minimum value cannot fall short. Thus, if the force transmission element, caused by the load, executes a small tilting movement, this can be proportionate depending on its direction large radial deflection of the piston ends, which must be absorbed by the piston cylinder seals, which are generally designed as sealing sleeves. Such side forces acting on the sealing sleeves are undesirable because they lead to an uneven loading of the sealing sleeves and can adversely affect their service life.

Eine ungleichmäßige seitliche Beanspruchung der Kolbenzylinderdichtungen des verhältnismäßig langen Kolbens kann auch dadurch zustandekommen, daß bei einem langen Druckmittelzylinder das Zylinderrohr bei nicht genau ausgerichteter Lagerung etwas durchgebogen ist, was sich gelegentlich nicht vermeiden läßt.An uneven lateral stress on the piston-cylinder seals of the relatively long piston can also result from the fact that with a long pressure medium cylinder, the cylinder tube is somewhat bent when the bearing is not precisely aligned, which cannot be avoided occasionally.

Aufgabe der Erfindung ist es deshalb, hier abzuhelfen und einen Druckmittelzylinder mit einem längsgeschlitzten, endseitig verschlossenen Zylinderrohr zu schaffen, der weitgehend unabhängig von belastungsabhängigen geringfügigen Kippbewegungen des Kraftübertragungselementes oder von kleinen, betriebsmäßig auftretenden Durchbiegungen des Zylinderrohres ist.The object of the invention is therefore to remedy this and to create a pressure medium cylinder with a longitudinally slotted cylinder tube which is closed at the end and which is largely independent of the load-dependent slight tilting movements of the force transmission element or of small, operationally occurring deflections of the cylinder tube.

Zur Lösung dieser Aufgabe ist der eingangs genannte Druckmittelzylinder erfindungsgemäß dadurch gekennzeichnet, daß der Kolben zwei beidseitig des Kraftübertragungselementes angeordnete und jeweils wenigstens eine Kolben-/Zylinderdichtung tragende Kolbenteile aufweist und daß die beiden Kolbenteile mit dem Kraftübertragungselement radial begrenzt beweglich verbunden sind.To achieve this object, the pressure medium cylinder mentioned at the outset is characterized according to the invention in that the piston has two pistons arranged on both sides of the power transmission element and at least one each Has piston / cylinder seal carrying piston parts and that the two piston parts are connected to the power transmission element with limited radial movement.

Bei diesem Druckmittelzylinder ist einerseits das Kraftübertragungselement mittels der Parallelführung auf der Außenseite des Zylinderrohres mit sehr geringem Spiel einwandfrei geführt. Andererseits kann der Kolben selbst einen Toleranzausgleich bezüglich der Innenwandung des Zylinderrohres erzielen und sich stets so einstellen, daß keine seitlichen Kräfte auf die Kolben-/Zylinderdichtungen ausgeübt werden. Der Kolben ist deshalb selbstzentrierend. Bei geringfügigen Durchbiegungen des Zylinderrohres kann er sich der Krümmung des Zylinderrohres selbsttätig anpassen, ohne seine Selbstzentrierung zu verlieren.In this pressure medium cylinder, on the one hand, the force transmission element is guided perfectly with very little play by means of the parallel guide on the outside of the cylinder tube. On the other hand, the piston itself can achieve a tolerance compensation with respect to the inner wall of the cylinder tube and can always adjust itself so that no lateral forces are exerted on the piston / cylinder seals. The piston is therefore self-centering. With slight deflections of the cylinder tube, it can adapt itself to the curvature of the cylinder tube without losing its self-centering.

Unter der Wirkung der Druckmittelbeaufschlagung erfährt der Längsschlitz des Zylinderrohres eine wenn auch sehr kleine, so doch vorhandene gewisse Aufweitung, die zu einer entsprechenden Formänderung des Querschnitts der Zylinderrohrbohrung führt. Da die beiden Kolbenteile mit dem Kraftübertragungselement radial begrenzt beweglich verbunden sind, können sich die weichen Kolben-/Zylinderdichtungen dieser Formänderung anpassen, ohne dabei durch einen starren Kolben behindert zu sein.Under the action of the pressure medium, the longitudinal slot of the cylinder tube experiences a certain widening, albeit a very small one, but one that does exist, which leads to a corresponding change in shape of the cross section of the cylinder tube bore. Since the two piston parts are connected to the force transmission element in such a way that they can move in a radially limited manner, the soft piston / cylinder seals can adapt to this change in shape without being hindered by a rigid piston.

Die beiden Kolbenteile bestehen in einer bevorzugten Ausführungsform jeweils aus Kunststoffmaterial.In a preferred embodiment, the two piston parts each consist of plastic material.

Sehr einfache konstruktive Verhältnisse ergeben sich, wenn jedes der beiden Kolbenteile über einen axial sich erstreckenden Zapfen an dem einen Teil,der mit begrenztem radialem Spiel in eine zugeordnete, in Achsrichtung verlaufende Aufnahmeöffnung an dem anderen Teil ragt, mit dem Kraftübertragungselement axial unverschieblich gekuppelt ist.Very simple structural relationships result if each of the two piston parts is axially immovably coupled to the force transmission element via an axially extending pin on one part, which projects with limited radial play into an associated receiving opening running in the axial direction on the other part.

Dabei können die an den beiden Kolbenteilen angeordneten Zapfen koaxial miteinander verbunden sein; die Anordnung kann aber auch derart getroffen sein, daß die beiden Kolbenteile durch einen einstückigen Zapfen miteinander verbunden sind.The pins arranged on the two piston parts can be connected coaxially to one another; however, the arrangement can also be such that the two piston parts are connected to one another by an integral pin.

Die axiale Kupplung der beiden Kolbenteile mit dem Kraftübertragungselement kann in einfacher Weise dadurch zustande gebracht werden, daß die beiden Kolbenteile jeweils über eine Schulter gegen das zwischen sie eingreifende Kraftübertragungselement axial abgestützt sind.The axial coupling of the two piston parts with the force transmission element can be brought about in a simple manner in that the two piston parts are each axially supported via a shoulder against the force transmission element engaging between them.

Im übrigen können die Zapfen bzw. kann der Zapfen über wenigstens einen die Aufnahmeöffnung durchdringenden Querstift mit dem Kraftübertragungselement verbunden sein, wobei der Querstift mit entsprechendem Spiel entweder durch eine entsprechende Querbohrung des oder der Zapfen verläuft, oder in eine randoffene Quernut des zugeordneten Zapfens eingreifend angeordnet ist.In addition, the pin or the pin can be connected to the force transmission element via at least one transverse pin penetrating the receiving opening, the transverse pin running with a corresponding clearance either through a corresponding transverse bore of the pin or pins, or arranged so as to engage in an open transverse groove of the assigned pin is.

Bei einer alternativen Ausführungsform können die Zapfen bzw. kann der Zapfen mit dem Kraftübertragungselement über wenigstens eine Kupplungseinrichtung mit in entsprechende Ausnehmungen des einen Teiles eingreifenden Ansätzen des anderen Teiles formschlüssig verbunden sein.In an alternative embodiment, the pins or the pin can be positively connected to the force transmission element via at least one coupling device with lugs of the other part engaging in corresponding recesses in one part.

Vorteilhaft ist es schließlich auch, wenn das Kraftübertragungselement zumindest im Bereich der Aufnahmeöffnung gabelförmig mit zwei die längsgeschlitzte Aufnahmeöffnung seitlich begrenzenden Schenkeln ausgebildet ist, wodurch Herstellung und Montage vereinfacht werden, während das biegsame Dichtband direkt durch die Aufnahmeöffnung hindurchgeführt ist und in diese einfach seitlich eingeführt werden kann.Finally, it is also advantageous if the force transmission element is fork-shaped, at least in the area of the receiving opening, with two legs laterally delimiting the longitudinally slotted receiving opening, as a result of which manufacture and assembly are simplified, while the flexible sealing tape is guided directly through the receiving opening and is simply inserted laterally into the latter can.

In der Zeichnung sind Ausführungsbeispiele des Gegenstandes der Erfindung dargestellt. Es zeigen

  • Figur 1 einen Druckmittelzylinder gemäß der Erfindung, im axialen Schnitt, in einer Seitenansicht und in einer Teildarstellung, unter Weglassung eines Teiles des Zylinderrohres, Figur 2 den Druckmittelzylinder nach Figur 1, geschnitten längs der Linie II-II der Figur 1, in einer Seitenansicht, Figur 3 den Kolben des Druckmittelzylinders nach Figur 1, mit einem Teil des Kraftübertragungselementes, im axialen Schnitt, in einer Seitenansicht und im Ausschnitt, Figur 4 den Kolben für einen Druckmittelzylinder nach Figur 1, in einer anderen Ausführungsform, in einer Darstellung entsprechend Figur 3, Figur 5 den Kolben für einen Druckmittelzylinder nach Figur 1, in einer weiteren Ausführungsform, mit einem die beiden Kolbenteile miteinander verbindenden einstückigen Zapfen, in einer Darstellung entsprechend Figur 3, Figur 6 den Kolben für einen Druckmittelzylinder nach Figur 1, in einer anderen Ausführungsform, mit zwei miteinander verbindbaren Zapfen, in einer Darstellung entsprechend Figur 3, und Figur 7 den Kolben eines Druckmittelzylinders nach Figur 1, in einer noch anderen Ausführungsform mit randoffenen Nuten der Zapfen der Kolbenteile, ebenfalls in einer Darstellung nach Figur 3.
Exemplary embodiments of the subject matter of the invention are shown in the drawing. Show it
  • 1 shows a pressure medium cylinder according to the invention, in axial section, in a side view and in a partial view, omitting part of the cylinder tube, FIG. 2 shows the pressure medium cylinder according to FIG. 1, cut along the line II-II in FIG. 1, in a side view, 3 shows the piston of the pressure medium cylinder according to FIG. 1, with a part of the force transmission element, in axial section, in a side view and in a cutout, Figure 4 shows the piston for a pressure medium cylinder according to Figure 1, in another embodiment, in a representation corresponding to Figure 3, Figure 5 shows the piston for a pressure medium cylinder according to Figure 1, in a further embodiment, with a one-piece pin connecting the two piston parts, in a representation corresponding to Figure 3, Figure 6, the piston for a pressure medium cylinder according to Figure 1, in another embodiment, with two interconnectable pins, in a representation corresponding to Figure 3, and Figure 7, the piston of a pressure medium cylinder according to Figure 1, in yet another Embodiment with open-edge grooves of the pins of the piston parts, likewise in a representation according to FIG. 3.

Der in Fig. 1,2 dargestellte Druckmittelzylinder weist ein eine zylindrische Zylinderbohrung 1 enthaltendes Zylinderrohr 2 auf, dessen Zylinderbohrung 1 endseitig durch zwei mit den Zylinderrohr 2 verschraubte Deckel 3 verschlossen ist. Von den Befestigungsschrauben ist eine bei 4 in Fig. 1 sichtbar.The pressure medium cylinder shown in FIG. 1, 2 has a cylinder tube 2 containing a cylindrical cylinder bore 1, the cylinder bore 1 of which is closed at the end by two covers 3 screwed to the cylinder tube 2. One of the fastening screws is visible at 4 in FIG. 1.

In der Zylinderbohrung 1 ist ein Kolben 5 längsverschieblich geführt, der mit einem Kraftübertragungselement 6 unmittelbar verbunden ist, welches mit einem stegartigen Teil 7 durch einen Längsschlitz 8 des Zylinderrohres 2 nach außen geführt ist. Das Kraftübertragungselement 6 ist mit einem angeformten, das Zylinderrohr 2 teilweise umgreifenden bügelartigen Teil 9 von im wesentlichen U-förmiger Querschnittsgestalt versehen, dessen beide Schenkel 10 auf ihrer Innenseite jeweils eine Führungsleiste 11 tragen. Die Führungsleisten 11 sind auf beidseitig des Längsschlitzes 8 unmittelbar auf der Außenwand des Zylinderrohres 2 angeordneten, im Querschnitt dreiecksförmigen Führungsbahnen 12 einer Parallelführung geführt. Wie aus Fig. 2 zu ersehen, sind die Führungsbahnen 12 in dem Bereich zwischen der äußeren Berandung des Längsschlitzes 8 und der die Kolbenachse enthaltenden, rechtwinklig zu dem Längsschlitz 8 verlaufenden Symmetrieebene angeordnet, die bei 13 angedeutet ist.In the cylinder bore 1, a piston 5 is guided in a longitudinally displaceable manner and is directly connected to a force transmission element 6, which is guided to the outside with a web-like part 7 through a longitudinal slot 8 of the cylinder tube 2. The force transmission element 6 is integrally formed with the cylinder tube 2 partially encompassing bow-like part 9 of substantially U-shaped cross-sectional shape, the two legs 10 of which each carry a guide bar 11 on their inside. The guide strips 11 are guided on both sides of the longitudinal slot 8 directly on the outer wall of the cylinder tube 2, with parallel cross-sectionally triangular guide tracks 12. As can be seen from FIG. 2, the guideways 12 are arranged in the area between the outer edge of the longitudinal slot 8 and the plane of symmetry containing the piston axis and running at right angles to the longitudinal slot 8, which is indicated at 13.

Der Längsschlitz 8 ist beidseitig des Kolbens 5 durch ein innenliegendes, biegsames Dichtband 14 abgedichtet, das endseitig an den Deckeln 3 verankert ist und das im Bereiche des Kolbens 5 unter dem stegartigen Teil 7 des Kraftübertragungselementes 6 hindurchgeführt ist.The longitudinal slot 8 is sealed on both sides of the piston 5 by an internal, flexible sealing tape 14 which is anchored at the ends to the covers 3 and which is guided in the region of the piston 5 under the web-like part 7 of the force transmission element 6.

Dieser Bereich liegt zwischen zwei im axialen Abstand voneinander an dem Kolben 5 angeordneten Kolben-/Zylinderdichtunqen in Gestalt von weichen Dichtmanschetten 15. Er ist drucklos, so daß der Längsschlitz 8 in diesem Bereich für den Durchtritt des stegartigen Teiles 7, wie aus Fig. 1 ersichtlich, ohne Druckmittelverlust geöffnet werden kann.This area is located between two axially spaced from one another on the piston 5 arranged piston / Zylinderdichtun q s in the form of soft sealing collars 15. It is depressurized, so that the longitudinal slot 8 in this area for the passage of the web-like member 7, as shown in FIG 1 can be opened without loss of pressure medium.

Auf dem Zylinderrohr 2 liegt im Bereiche des Längsschlitzes 8 ein ebenfalls endseitia an den Deckeln 3 verankertes biegsames Abdeckband 16 auf, das durch eine Öffnung 17 des Kraftübertragungselementes 6 hindurchgeführt ist und das eine in der Zeichnung nicht weiter dargestellte, im Querschnitt keilförmig profilierte randoffene,Länqsnut aufweist, die mit einem an dem Dichtband 14 angeformten, im Querschnitt im wesentlichen keilförmigen Steg zusammenwirkt, der in den Längsschlitz 8 ragt.On the cylinder tube 2, in the area of the longitudinal slot 8, there is also a flexible cover strip 16 anchored at the ends 3 to the covers 3, which is passed through an opening 17 of the force transmission element 6 and which has an open-ended, longitudinal groove, not shown in the drawing, with a wedge-shaped profile in cross section has, which cooperates with an integrally formed on the sealing tape 14, in cross-section substantially wedge-shaped web, which projects into the longitudinal slot 8.

Das Dichtband 14 dichtet den Längsschlitz 8 beidseitig des Kolbens 5 ab, so daß, wenn die Zylinderbohrung 1 über in den Deckeln 3 vorgesehene Druckmittelkanäle 18 mit einem Druckmittel, bspw. Druckluft, beaufschlagt wird, der Kolben 5 in der Zylinderbohrung 1 eine entsprechende Längsbewegung ausführt.The sealing tape 14 seals the longitudinal slot 8 on both sides of the piston 5, so that when a pressure medium, for example compressed air, is applied to the cylinder bore 1 via pressure medium channels 18 provided in the covers 3, the piston 5 executes a corresponding longitudinal movement in the cylinder bore 1 .

Das Kraftübertragungselement 6 weist anschließend an des stegartige Teil 7 ein gabelförmiges Teil 20 auf, dessen beide Schenkel eine längsgeschlitzte Aufnahmeöffnung 21 .seitlich begrenzen, durch welche gleichzeitig das Dichtband 14 hindurchgeführt ist. Die Innenwandung der Aufnahmeöffnung 21 ist teilweise zylindrisch ausgebildet (Fig. 2); im Bereiche des Dichtbandes 14 ist sie mit einer nutartigen Vertiefung versehen, die das Dichtband 14 aufnimmt.The force transmission element 6 then has on the web-like part 7 a fork-shaped part 20, the two legs of which laterally delimit a longitudinally slotted receiving opening 21, through which the sealing tape 14 is simultaneously passed. The inner wall of the receiving opening 21 is partially cylindrical (Fig. 2); in the area of the sealing tape 14, it is provided with a groove-like depression which receives the sealing tape 14.

Der Kolben 5 weist zwei beidseitig des gabelförmigen Teiles 20 des Kraftübertragungselementes 6 symmetrisch angeordnete Kolbenteile 22 auf, die jeweils aus Kunststoffmaterial bestehen. In eine stirnseitige Nut eines zylindrischen Abschnittes 23 jedes der Kolbenteile 22 ist eine bereits erwähnte Dichtmanschette 15 eingesetzt, während ein an den zylinderförmigen Abschnitt 23 anschließender kegelstumpfförmiger Querschnitt 24 in einer Schulter 25 endet, über die das jeweilige Kolbenteil 22 axial gegen das gabelförmige Teil 20 des Kraftübertragungselementes 6 abgestützt ist. Eine in jedem der Kolbenteile 22 axial mündende einseitig verschlossene Dämpfungsbohrung 250 wirkt in der Endstellung des Kolbens in der aus Fig. 1 ersichtlichen Weise jeweils mit einem Dämpfungsrohr 260 zusammen.The piston 5 has two piston parts 22 arranged symmetrically on both sides of the fork-shaped part 20 of the force transmission element 6 on, each made of plastic material. In an end groove of a cylindrical section 23 of each of the piston parts 22, a sealing sleeve 15 is inserted, while a frustoconical cross section 24 adjoining the cylindrical section 23 ends in a shoulder 25, via which the respective piston part 22 axially against the forked part 20 of the Power transmission element 6 is supported. A damping bore 250, which ends axially in each of the piston parts 22 and is closed at one end, in the end position of the piston interacts with a damping tube 260 in the manner shown in FIG. 1.

Die beiden Kolbenteile 22 sind an dem gabelförmigen Teil 20 das Kraftübertragungselementes 6 jeweils radial begrenzt beweglich befestigt.The two piston parts 22 are each fastened to the fork-shaped part 20 of the force transmission element 6 in a radially limited manner.

Zu diesem Zwecke ist bei der Ausführungsform nach den Fig. 1 bis 3 die Anordnung derart getroffen, daß die beiden Kolbenteile 22 im Bereiche der Schulter 25 jeweils einen koaxialen vorstehenden zylindrischen Zapfen 26 tragen, der mit Spiel in die teilzylindrische Aufnahmeöffnung 21 des gabelförmigen Teiles 20 eingesteckt sind. Die axiale Verbindung der beiden Kolbenteile 22 mit dem gabelförmigen Teil 20 erfolgt durch zwei Querstifte 27, die die Aufnahmeöffnung 21 und entsprechende Querbohrungen 28 in den Zapfen 26 durchdringen.For this purpose, the arrangement in the embodiment according to FIGS. 1 to 3 is such that the two piston parts 22 each carry a coaxial projecting cylindrical pin 26 in the region of the shoulder 25, which with play in the part-cylindrical receiving opening 21 of the fork-shaped part 20 are plugged in. The two piston parts 22 are axially connected to the fork-shaped part 20 by two transverse pins 27, which have the receiving opening 21 and corresponding transverse bores 28 penetrate into the pin 26.

Bei der in Fig. 4 dargestellten Ausführungsform des Kolbens 5 ist die Anordnung derart getroffen, daß die beiden koaxialen Zapfen 26 der Kolbenteile 22 endseitig jeweils einen Ansatz in Gestalt eines Ringbundes 30 tragen, während das gegebenenfalls zweiteilige gabelförmige Teil 20 mit einer Ringnut 31 im Bereiche seiner beiden Schenkel versehen ist, in die die beiden Ringbünde 30 eingreifen, so daß gemeinsam mit der Abstützung der Schulter 25 der Kolbenteile 22 an dem gabelförmigen Teil 20 eine formschlüssige Verbindung der beiden Kolbenteile 22 mit dem Kraftübertragungselement 6 zustande kommt. Durch entsprechende Bemessung der Ringnut 31 und der teilzylindrischen Aufnahmeöffnung 21, wie auch des Durchmessers der zylindrischen Zapfen 26, wird die bereits erwähnte begrenzte radiale Beweglichkeit der beiden Kolbenteile 22 gewährleistet.In the embodiment of the piston 5 shown in Fig. 4, the arrangement is such that the two coaxial pins 26 of the piston parts 22 each have an end in the form of an annular collar 30, while the optionally two-part fork-shaped part 20 with an annular groove 31 in the area its two legs are provided, in which the two ring collars 30 engage, so that together with the support of the shoulder 25 of the piston parts 22 on the fork-shaped part 20 a positive connection of the two piston parts 22 with the force transmission element 6 is achieved. The already mentioned limited radial mobility of the two piston parts 22 is ensured by appropriate dimensioning of the annular groove 31 and the partially cylindrical receiving opening 21, as well as the diameter of the cylindrical pins 26.

Bei der Ausführungsform nach Fig. 5 sind die beiden Kolbenteile 22 durch einen einstückigen, an beide Kolbenteile 22 angeformten Zapfen 26a miteinander verbunden, der durch einen eine Querbohrung 28 durchdringenden Querstift 27 in einer grundsätzlich der Ausführungsform nach Fig. 3 entsprechenden Weise mit dem gabelförmigen Teil 20 des Kraftübertragungselementes 6 ebenfalls radial begrenzt beweglich verbunden ist.In the embodiment according to FIG. 5, the two piston parts 22 are connected to one another by a one-piece pin 26a integrally formed on both piston parts 22, which is connected to the fork-shaped part by a transverse pin 27 penetrating a transverse bore 28 in a manner which basically corresponds to the embodiment according to FIG 20 of the power transmission element 6 is also connected in a radially limited manner.

Zur Erleichterung der Montage der beiden Kolbenteile 22 kann die Anordnung in der aus Fig. 6 ersichtlichen Weise auch derart getroffen sein, daß die beiden zylindrischen Zapfen 26 der Kolbenteile 22 stirnseitig miteinander verbindbar ausgebildet sind. Zu diesem Zwecke trägt der eine Zapfen 26 bspw. einen Gewindestutzen 32, während der andere Zapfen 26 mit einer entsprechenden Gewindebohrung 33 versehen ist.To facilitate the assembly of the two piston parts 22, the arrangement in the 6 can also be taken in such a way that the two cylindrical pins 26 of the piston parts 22 are designed to be connectable to one another at the end. For this purpose, one pin 26 carries, for example, a threaded connector 32, while the other pin 26 is provided with a corresponding threaded bore 33.

Anstelle des Gewindestutzens 32 und der Gewindebohrung 33 können auch entsprechende Rastverbindungselemente verwendet werden.Instead of the threaded connector 32 and the threaded bore 33, corresponding latching connection elements can also be used.

Die beiden Kolbenteile 22 sind in diesem Falle an dem bügelförmigen Teil 20 dadurch axial angekuppelt, daß sie mit ihrer Ringschulter 25 sich seitlich an dem gabelförmigen Teil 20 abstützen, so daß die miteinander verbundenen Zapfen 26 als Zuganker wirken. Entsprechend könnte auch bei der Ausführungsform nach Fig. 5 der Querstift 27 weggelassen werden.The two piston parts 22 are in this case axially coupled to the bow-shaped part 20 in that they are supported laterally on the fork-shaped part 20 with their annular shoulder 25, so that the pins 26 which are connected to one another act as tie rods. Correspondingly, the cross pin 27 could also be omitted in the embodiment according to FIG. 5.

Bei der in Fig. 7 schließlich dargestellten Ausführungsform des Kolbens 5 sind die zylindrischen Zapfen 26 der beiden Kolbenteile jeweils mit einer randoffenen Quernut 34 versehen, in die ein die teilzylindrische Aufnahmeöffnung 21 des gabelförmigen Teiles 20 durchdringender Querstift 35 eingreift. Auch hier ist durch entsprechende Bemessung der einzelnen Teile - wie bei allen dargestellten Ausführungsformen der Kolben 5 - eine begrenzte radiale Beweglichkeit der Kolbenteile 22 bezüglich des gabelförmigen Teiles 20 und damit des Kraftübertragungselementes 6 gewährleistet.In the embodiment of the piston 5 finally shown in FIG. 7, the cylindrical pins 26 of the two piston parts are each provided with a transverse groove 34 which is open at the edge and into which a transverse pin 35 which penetrates the partially cylindrical receiving opening 21 of the fork-shaped part 20 engages. Here too, by appropriate dimensioning of the individual parts - as in all the illustrated embodiments of the piston 5 - a limited one radial mobility of the piston parts 22 with respect to the fork-shaped part 20 and thus the force transmission element 6 is guaranteed.

Bei den im Vorstehenden beschriebenen Ausführungsformen des Kolbens 5 sind die Zapfen 26 jeweils an den Kolbenteilen 22 vorgesehen. Grundsätzlich könnte die Anordnung auch umgekehrt getroffen sein, indem an dem Kraftübertragungselement 6 in der Zylinderbohrung 1 liegende, seitlich vorstehende koaxiale Zapfen angeordnet sind, auf die dann die eine entsprechende Aufnahmeöffnung aufweisenden Kolbenteile mit begrenztem radialen Spiel, aber axial unverschieblich, aufgesetzt sind.In the embodiments of the piston 5 described above, the pins 26 are each provided on the piston parts 22. In principle, the arrangement could also be reversed, in that laterally projecting coaxial pins are arranged on the force transmission element 6 in the cylinder bore 1, on which the piston parts with a corresponding receiving opening are then placed with limited radial play but axially immovable.

Dadurch, daß die die Dichtmanschetten 15 tragenden Kolbenteile 22 bezüglich des Kraftübertragungselementes 6 begrenzt radial beweglich gelagert sind, sind die Kolbenteile 22 mit ihren Dichtmanschetten 15 in der Zylinderbohrung 1 selbstzentrierend, wobei ihre Einstellung durch im Rahmen des Toleranzbereiches mögliche Kippbewegungen des Kraftübertragungselementes nicht beeinträchtigt werden kann. Auch können die Kolbenteile 22 mit ihren Dichtmanschetten 15 sich der Form der Zylinderbohrung 1 ohne Behinderung durch starre Kolbenteile anpassen, was insbesondere dann von Bedeutung ist, wenn bei einem langen Zylinderrohr 2 eine gewisse Durchbiegung auftritt oder der Längsschlitz 8 unter der Einwirkung der Druckmittelbeaufschlagung der Zylinderbohrung 1 eine gewisse kleine Aufweitung erfährt.Due to the fact that the piston parts 22 carrying the sealing sleeves 15 are mounted with limited radial movement with respect to the force transmission element 6, the piston parts 22 with their sealing sleeves 15 are self-centering in the cylinder bore 1, and their setting cannot be impaired by tilting movements of the force transmission element which are possible within the tolerance range . The piston parts 22 with their sealing sleeves 15 can adapt to the shape of the cylinder bore 1 without being impeded by rigid piston parts, which is particularly important when a certain deflection occurs in a long cylinder tube 2 or the longitudinal slot 8 experiences a certain small widening under the action of the pressure medium acting on the cylinder bore 1.

Claims (11)

1. Druckmittelzylinder mit einem längsgeschlitzten, endseitig verschlossenen Zylinderrohr (2), in dem ein abgedichteter Kolben (5) längsverschieblich geführt ist und dessen Längsschlitz (8) beiderseits des Kolbens (5) durch ein innenliegendes biegsames richtband (14) abqe-dichtet ist, das in einem zwischen zwei Kolben-/ Zylinderdichtungen (15) liegenden drucklosen Bereich des Kolbens (5) unter einem durch den Längsschlitz (8) nach außen ragenden, mit dem Kolben (5) unmittelbar verbundenen Kraftübertragungselement (6) hindurchgeführt ist, wobei das Kraftübertragungselement (6) mittels eines das Zylinderrohr (2) teilweise umgreifenden bügelartigen Führungsteiles (9) auf wenigstens zwei parallelen Führungsbahnen (12) einer außenliegenden Parallelführung längsgeführt ist, deren Führungsbahnen (12) zu beiden Seiten des Längsschlitzes (8) unmittelbar auf der Außenwand des Zylinderrohres (2) angeordnet sind, dadurch gekennzeichnet, daß der Kolben (5) zwei beidseitig des Kraftübertragungselementes (6) angeordnete und jeweils wenigstens eine Kolben-/ Zylinderdichtung (15) tragende Kolbenteile (22) aufweist und daß die beiden Kolbenteile (22) mit dem Kraftübertragungselement (6) radial begrenzt beweglich verbunden sind.1. Pressure medium cylinder with a longitudinally slotted cylinder tube (2) which is closed at the end, in which a sealed piston (5) is guided in a longitudinally displaceable manner and whose longitudinal slot (8) on both sides of the piston (5) is q e-sealed by an internal flexible straightening strip (14) which is guided in a pressure-free area of the piston (5) lying between two piston / cylinder seals (15) under a force transmission element (6) which projects outwards through the longitudinal slot (8) and is directly connected to the piston (5), whereby the force transmission element (6) is longitudinally guided on at least two parallel guideways (12) of an external parallel guide, the guideways (12) of which are on both sides of the longitudinal slot (8) directly on the outer wall by means of a bow-like guide part (9) which partially surrounds the cylinder tube (2) of the cylinder tube (2) are arranged, characterized in that the piston (5) two on both sides of the power transmission element Mentes (6) arranged and each having at least one piston / cylinder seal (15) carrying piston parts (22) and that the two piston parts (22) with the power transmission element (6) are radially limitedly connected. 2. Druckmittelzylinder nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Kolbenteile (22) jeweils aus Kunststoffmaterial bestehen.2. Pressure cylinder according to claim 1, characterized in that the two piston parts (22) each consist of plastic material. 3. Druckmittelzylinder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jedes der beiden Kolbenteile (22) über einen axial sich erstreckenden Zapfen (26) an dem einen Teil, der mit begrenztem radialem Spiel in eine zugeordnete, in Achsrichtung verlaufende Aufnahmeöffnung (21) an dem anderen Teil ragt mit dem Kraftübertragungselement (6) axial unverschieblich gekuppelt ist.3. Pressure medium cylinder according to one of the preceding claims, characterized in that each of the two piston parts (22) via an axially extending pin (26) on the one part, which with limited radial play in an associated, in the axial direction receiving opening (21) protrudes on the other part with the power transmission element (6) is axially immovably coupled. 4. Druckmittelzylinder nach Anspruch 3, dadurch gekennzeichnet, daß die an den beiden Kolbenteilen (-22) angeordneten Zapfen (26) koaxial miteinander verbunden sind.4. Pressure cylinder according to claim 3, characterized in that the arranged on the two piston parts (-22) pins (26) are connected coaxially. 5. Druckmittelzylinder nach Anspruch 4, dadurch gekennzeichnet, daß die beiden Kolbenteile (22) durch einen einstückigen Zapfen (26a) miteinander verbunden sind.5. Pressure medium cylinder according to claim 4, characterized in that the two piston parts (22) are connected to one another by an integral pin (26a). 6. Druckmittelzylinder nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß die beiden Kolbenteile (22) jeweils über eine Schulter (25) gegen das zwischen sie eingreifende Kraftübertragungselement axial abgestützt sind.6. Pressure cylinder according to one of claims 3 to 5, characterized in that the two piston parts (22) are each axially supported via a shoulder (25) against the force transmission element engaging between them. 7. Druckmittelzylinder nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß die oder der Zapfen (26; 26a) mit dem Kraftübertragungselement (6) über wenigstens einen die Aufnahmeöffnung (21) durchdringenden Querstift (27) verbunden sind bzw. ist.7. Pressure cylinder according to one of claims 3 to 6, characterized in that the or the pin (26; 26a) with the force transmission element (6) via at least one of the receiving opening (21) penetrating cross pin (27) are connected or is. 8. Druckmittelzylinder nach Anspruch 7, dadurch gekennzeichnet, daß der Querstift (35) in eine randoffene Quernut (34) des zugeordneten Zapfens (26) eingreifend angeordnet ist.8. Pressure medium cylinder according to claim 7, characterized in that the transverse pin (35) is arranged engaging in an open transverse groove (34) of the associated pin (26). 9. Druckmittelzylinder nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß die oder der Zapfen (26; 26a) mit dem Kraftübertragungselement (6) über wenigstens eine Kupplungseinrichtung mit in entsprechende Ausnehmungen (31) des einen Teiles eingreifenden Ansätzen (30) des anderen Teiles formschlüssig verbunden ist.9. Pressure cylinder according to one of claims 3 to 6, characterized in that the or the pin (26; 26a) with the force transmission element (6) via at least one coupling device with in corresponding recesses (31) of one part engaging approaches (30) of other part is positively connected. 10. Druckmittelzylinder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Kraftübertragungselement (6) im Bereiche der Aufnahmeöffnung (21) gabelförmig mit zwei die längsgeschlitzte Aufnahmeöffnung (21) seitlich begrenzenden Schenkeln ausgebildet ist.10. Pressure medium cylinder according to one of the preceding claims, characterized in that the Kraftübertragun g selement (6) in the region of the receiving opening (21) fork-shaped with two longitudinally slit the receiving opening (21) laterally limiting legs is formed. 11. Druckmittelzylinder nach Anspruch 10, dadurch gekennzeichnet, daß das Dichtband (.14) unmittelbar durch die Aufnahmeöffnung (21) des Kraftübertragungselementes (6) hindurchgeführt ist.11. Pressure cylinder according to claim 10, characterized in that the sealing tape (.14) is passed directly through the receiving opening (21) of the power transmission element (6).
EP83100256A 1983-01-14 1983-01-14 Pressure cylinder with a longitudinally slotted barrel closed at both ends Expired EP0113790B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE8383100256T DE3370172D1 (en) 1983-01-14 1983-01-14 Pressure cylinder with a longitudinally slotted barrel closed at both ends
AT83100256T ATE25869T1 (en) 1983-01-14 1983-01-14 PRESSURE MEDIA CYLINDER WITH A LONGITUDINALLY SLOTTED CYLINDER CLOSED AT THE END.
EP83100256A EP0113790B1 (en) 1983-01-14 1983-01-14 Pressure cylinder with a longitudinally slotted barrel closed at both ends
US06/563,028 US4519297A (en) 1983-01-14 1983-12-19 Sealed motion transfer apparatus utilizing a pressure fluid cylinder
BR8400087A BR8400087A (en) 1983-01-14 1984-01-09 SEALED MOVEMENT TRANSFER APPLIANCE
JP59003699A JPS59137608A (en) 1983-01-14 1984-01-13 Pressure medium cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83100256A EP0113790B1 (en) 1983-01-14 1983-01-14 Pressure cylinder with a longitudinally slotted barrel closed at both ends

Publications (2)

Publication Number Publication Date
EP0113790A1 true EP0113790A1 (en) 1984-07-25
EP0113790B1 EP0113790B1 (en) 1987-03-11

Family

ID=8190233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100256A Expired EP0113790B1 (en) 1983-01-14 1983-01-14 Pressure cylinder with a longitudinally slotted barrel closed at both ends

Country Status (6)

Country Link
US (1) US4519297A (en)
EP (1) EP0113790B1 (en)
JP (1) JPS59137608A (en)
AT (1) ATE25869T1 (en)
BR (1) BR8400087A (en)
DE (1) DE3370172D1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157892B1 (en) * 1984-04-10 1987-06-24 Reinhard Lipinski Linear transporter
EP0234033A2 (en) * 1985-12-18 1987-09-02 Tol-O-Matic, Inc. Carrier bracket for power cylinder
US4714007A (en) * 1985-03-19 1987-12-22 Herion-Werke Kg Shuttle piston cylinder
EP0284192A2 (en) * 1987-03-24 1988-09-28 Anthony G. Aquilina Sliding door operator
DE3818833A1 (en) * 1988-06-03 1989-02-02 Dimter Erwin Piston for pneumatic cylinders, especially cylinders without a piston rod
EP0458428A1 (en) * 1990-05-23 1991-11-27 MANNESMANN Aktiengesellschaft Apparatus with a device to slip out and in a flexible strip which protects a recess particularly for a rodless cylinder
DE4400483A1 (en) * 1994-01-11 1995-07-20 Invest Tech Ag Linear drive cylinder
EP0704275A3 (en) * 1994-09-30 1996-05-15 Smc Kk
EP0945629A1 (en) * 1998-03-27 1999-09-29 Ab Rexroth Mecman Sealing band holder
WO2000019109A1 (en) * 1998-09-30 2000-04-06 Festo Ag & Co. Linear drive

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3429783A1 (en) * 1984-08-13 1986-02-20 Herion-Werke Kg, 7012 Fellbach PISTONLESS CYLINDER
JPH0452482Y2 (en) * 1985-11-06 1992-12-10
JPS62266206A (en) * 1986-05-09 1987-11-19 Ckd Corp Rodless cylinder
JPH0674801B2 (en) * 1987-01-30 1994-09-21 豊和工業株式会社 Rotless dress cylinder
JPH0765602B2 (en) * 1987-01-30 1995-07-19 豊和工業株式会社 Rotless dress cylinder
US4891908A (en) * 1987-03-24 1990-01-09 Aquilina Anthony G Pneumatic door opener
US5040332A (en) * 1988-07-08 1991-08-20 Aquilina Anthony G Pneumatic door operator
GB2220982A (en) * 1988-07-22 1990-01-24 Henderson Group Plc An opening and closing assembly for a sectional up and over panel
SE465787B (en) * 1990-02-09 1991-10-28 Bo Granbom FIXING DEVICE FOR FIXING A RAIL AT A MANOEVER CYLINDER
JPH0743452Y2 (en) * 1990-03-02 1995-10-09 シーケーデイ株式会社 Fluid pressure cylinder
DE4024717A1 (en) * 1990-08-03 1992-02-06 Knorr Bremse Ag PRESSURE CYLINDER WITH LENGTH SLIT CYLINDER PIPE
EP0515715B1 (en) * 1991-05-29 1995-08-16 Hygrama Ag Linear actuation
JP2607486Y2 (en) * 1991-09-25 2001-09-04 エヌオーケー株式会社 Fluid pressure cylinder
DE4137789C2 (en) * 1991-11-16 1994-01-20 Festo Kg linear actuator
JP2554100Y2 (en) * 1992-07-22 1997-11-12 エスエムシー株式会社 Rodless cylinder
US5303638A (en) * 1993-02-26 1994-04-19 Green Joseph H Rodless piston and cylinder assembly for a reciprocating carriage
GB9501117D0 (en) * 1995-01-20 1995-03-08 Norgren Martonair Gmbh Fluid-powered cylinder
WO1997040279A1 (en) * 1996-04-22 1997-10-30 Tol-O-Matic, Inc. Slot bearing
DE29714296U1 (en) * 1997-08-09 1997-10-16 Festo AG & Co, 73734 Esslingen Piston of a linear actuator
JP3818752B2 (en) * 1997-09-24 2006-09-06 Ｓｍｃ株式会社 Rodless cylinder
US6257123B1 (en) 1997-10-24 2001-07-10 Phd, Inc. Rodless slides
US5988042A (en) * 1997-10-24 1999-11-23 Phd, Inc. Rodless cylinder with internal bearings
SE520017C2 (en) * 1997-10-31 2003-05-06 Mecman Ab Rexroth Pressure fluid cylinder
SE510723C2 (en) * 1997-10-31 1999-06-14 Mecman Ab Rexroth Pressure fluid cylinder
US6336393B1 (en) 1998-07-01 2002-01-08 Parker-Hannifin Corporation Rodless pneumatic cylinder
US8627871B2 (en) * 2011-12-13 2014-01-14 Anthony George Aquilina Sectional overhead door actuators

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2943506A1 (en) * 1979-10-27 1981-05-07 W. Schlafhorst & Co, 4050 Mönchengladbach Combination cylinder and piston unit - has rollers on narrow section piston to reduce friction acting on circular sealing strips
EP0068088A1 (en) * 1981-06-25 1983-01-05 PROMA Produkt- und Marketing-Gesellschaft m.b.H. Fluid pressure actuator with slotted cylinder and sealed ends

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648310A (en) * 1952-06-23 1953-08-11 Sr Walter S Baer Link-plate seal for catapult slotted cylinders
US3309967A (en) * 1965-01-25 1967-03-21 John F Taplin Rolling diaphragm devices having loose coupling between piston and piston rod to render the piston floating
DE2344932A1 (en) * 1972-10-19 1974-04-25 Homer John Shafer DOUBLE CYLINDER DRIVE FOR GENERATING A ROTATING MOVEMENT
GB1443320A (en) * 1973-01-20 1976-07-21 Girling Ltd Self-energising disc brakes
US3926094A (en) * 1973-07-02 1975-12-16 Midland Ross Corp Air operated spring brake
JPS5128793A (en) * 1974-09-04 1976-03-11 Kogyo Gijutsuin HYOMENREIKYAKUGATASEMIHOTSUTOCHANERUHEKI
US4164893A (en) * 1977-08-04 1979-08-21 Bo Granbom Sealing device at pressure fluid cylinders
JPS54125371A (en) * 1978-03-20 1979-09-28 Clark Equipment Co Linear fluid motor
DE2847274C2 (en) * 1978-10-31 1983-01-27 Fa. Carl Freudenberg, 6940 Weinheim Piston for a working cylinder
SE414384B (en) * 1978-11-02 1980-07-28 Sab Ind Ab DEVICE BY A BRAKE ACTUATOR
JPS6131203Y2 (en) * 1980-02-02 1986-09-11
US4401011A (en) * 1980-05-28 1983-08-30 Wallberg Kurt Ake Method to adjust and/or indicate a liquid or gaseous pressure, and a device for utilization of the method
US4338857A (en) * 1980-07-14 1982-07-13 Lee Engineering, Inc. Rotary actuator for valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2943506A1 (en) * 1979-10-27 1981-05-07 W. Schlafhorst & Co, 4050 Mönchengladbach Combination cylinder and piston unit - has rollers on narrow section piston to reduce friction acting on circular sealing strips
EP0068088A1 (en) * 1981-06-25 1983-01-05 PROMA Produkt- und Marketing-Gesellschaft m.b.H. Fluid pressure actuator with slotted cylinder and sealed ends

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157892B1 (en) * 1984-04-10 1987-06-24 Reinhard Lipinski Linear transporter
US4714007A (en) * 1985-03-19 1987-12-22 Herion-Werke Kg Shuttle piston cylinder
EP0234033A2 (en) * 1985-12-18 1987-09-02 Tol-O-Matic, Inc. Carrier bracket for power cylinder
EP0234033A3 (en) * 1985-12-18 1988-08-10 Tol-O-Matic, Inc. Carrier bracket for power cylinder
EP0284192A2 (en) * 1987-03-24 1988-09-28 Anthony G. Aquilina Sliding door operator
EP0284192A3 (en) * 1987-03-24 1988-11-02 Anthony G. Aquilina Sliding door operator
DE3818833A1 (en) * 1988-06-03 1989-02-02 Dimter Erwin Piston for pneumatic cylinders, especially cylinders without a piston rod
EP0458428A1 (en) * 1990-05-23 1991-11-27 MANNESMANN Aktiengesellschaft Apparatus with a device to slip out and in a flexible strip which protects a recess particularly for a rodless cylinder
DE4400483A1 (en) * 1994-01-11 1995-07-20 Invest Tech Ag Linear drive cylinder
EP0704275A3 (en) * 1994-09-30 1996-05-15 Smc Kk
US5617772A (en) * 1994-09-30 1997-04-08 Smc Kabushiki Kaisha Linear actuator
EP0945629A1 (en) * 1998-03-27 1999-09-29 Ab Rexroth Mecman Sealing band holder
US6148715A (en) * 1998-03-27 2000-11-21 Ab Rexroth Mecman Sealing band holder
WO2000019109A1 (en) * 1998-09-30 2000-04-06 Festo Ag & Co. Linear drive
US6338294B1 (en) 1998-09-30 2002-01-15 Festo Ag & Co. Linear drive

Also Published As

Publication number Publication date
US4519297A (en) 1985-05-28
JPH0337043B2 (en) 1991-06-04
BR8400087A (en) 1984-08-21
ATE25869T1 (en) 1987-03-15
JPS59137608A (en) 1984-08-07
DE3370172D1 (en) 1987-04-16
EP0113790B1 (en) 1987-03-11

Similar Documents

Publication Publication Date Title
EP0113790A1 (en) Pressure cylinder with a longitudinally slotted barrel closed at both ends
EP0157892B1 (en) Linear transporter
DE69016218T2 (en) Hydraulically lockable gas spring.
DE2932131A1 (en) DAMPING DEVICE
DE102007058630A1 (en) Fluid pressure cylinder
DE3340291A1 (en) PRESSURE CYLINDER
EP0190760A1 (en) Fluid actuator
DE4024716A1 (en) PRESSURE CYLINDER WITH LENGTH SLIT CYLINDER PIPE
DE8612933U1 (en) Device for stopping an axle or the like.
DE69720916T2 (en) hose coupling
DE3639528A1 (en) Plug-in coupling
DE3607975C2 (en) Socket part of a pipe or hose line coupling
DE2431135B2 (en)
EP0475032B1 (en) Fluid actuator with slotted cylinder
DE102017123396A1 (en) Lifting valve and arrangement for a lifting valve
DE3302444A1 (en) Pneumatic or hydraulic linear drive
DE69104670T2 (en) Locking device of a connector.
DE3437160A1 (en) PNEUMATIC OR HYDRAULIC WORK CYLINDER
DE2141857A1 (en) Fluid pressure operated disc brake
DE2928985C2 (en) Hydraulic booster valve, in particular for a hydraulic brake system of a motor vehicle
DE3243201C2 (en) Press for testing pipes
DE3534795C1 (en) High-pressure plunger pump
EP0504450B1 (en) Pressure fluid cylinder without piston rod
EP1058797B1 (en) Gate valve
DE4330634A1 (en) Device for clamping an axially movable rod

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19840906

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PROMA PRODUKT- UND MARKETING GESELLSCHAFT M.B.H.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 25869

Country of ref document: AT

Date of ref document: 19870315

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

REF Corresponds to:

Ref document number: 3370172

Country of ref document: DE

Date of ref document: 19870416

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;NORGREN MARTONAIR EUROPA GMBH

NLS Nl: assignments of ep-patents

Owner name: NORGREN MARTONAIR EUROPA GMBH TE ALPEN, BONDSREPUB

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: NORGREN MARTONAIR EUROPA GMBH

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 83100256.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19951207

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19951213

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19951214

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19951218

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19951229

Year of fee payment: 14

Ref country code: CH

Payment date: 19951229

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19960101

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970114

Ref country code: AT

Effective date: 19970114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19970115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19970131

Ref country code: LI

Effective date: 19970131

Ref country code: BE

Effective date: 19970131

BERE Be: lapsed

Owner name: NORGREN MARTONAIR EUROPA G.M.B.H.

Effective date: 19970131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19970801

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970930

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19970801

EUG Se: european patent has lapsed

Ref document number: 83100256.3

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19981222

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19981223

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000114

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001101