EP0218072B1 - Actuating device for rotatable column, especially for moving a pivoting door wing of a motor vehicle - Google Patents

Actuating device for rotatable column, especially for moving a pivoting door wing of a motor vehicle Download PDF

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Publication number
EP0218072B1
EP0218072B1 EP86111752A EP86111752A EP0218072B1 EP 0218072 B1 EP0218072 B1 EP 0218072B1 EP 86111752 A EP86111752 A EP 86111752A EP 86111752 A EP86111752 A EP 86111752A EP 0218072 B1 EP0218072 B1 EP 0218072B1
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EP
European Patent Office
Prior art keywords
piston
cylinder
sleeve
piston rod
cylinders
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
Application number
EP86111752A
Other languages
German (de)
French (fr)
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EP0218072A2 (en
EP0218072A3 (en
Inventor
Siegfried Heinrich
Manfred Horn
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.)
Gebrueder Bode GmbH and Co KG
Original Assignee
Gebrueder Bode GmbH and Co 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 Gebrueder Bode GmbH and Co KG filed Critical Gebrueder Bode GmbH and Co KG
Priority to AT86111752T priority Critical patent/ATE44301T1/en
Publication of EP0218072A2 publication Critical patent/EP0218072A2/en
Publication of EP0218072A3 publication Critical patent/EP0218072A3/en
Application granted granted Critical
Publication of EP0218072B1 publication Critical patent/EP0218072B1/en
Expired legal-status Critical Current

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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
    • E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
    • E05F15/54—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings operated by linear actuators acting on a helical track coaxial with the swinging axis
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/28—Suspension arrangements for wings supported on arms movable in horizontal plane
    • E05D15/30—Suspension arrangements for wings supported on arms movable in horizontal plane with pivoted arms and sliding guides
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/506—Application of doors, windows, wings or fittings thereof for vehicles for buses
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
    • E05Y2900/531—Doors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating

Definitions

  • the invention relates to a drive device for a rotating column, in particular for moving pivoting door leaves on motor vehicles, in which the rotating column, which is rotatably mounted at its two ends in brackets, is designed as a hollow cylinder in which a screw gear is arranged, which is arranged by a completely arranged in the hollow cylinder in Pneumatic piston-cylinder drive can be driven in both directions of movement, which consists of at least two piston-cylinder units which are fixedly connected at one end to a holder of the rotary column and whose piston rod connected to a part of the screw gear is fixed in one end to the screw gear arranged and with one of the brackets connected axial guide device is guided non-rotatably.
  • Such a drive device is described for example in DE-A-2 538 529.
  • the known drive device has the disadvantage that the forces that can be generated to open and close the door are limited, since the rotary column in which the drive device is arranged must not exceed a certain maximum diameter. It is stated in connection with the known drive device that the piston-cylinder drive can also consist of several piston-cylinder units, but the problem of how the pressure medium supply to several piston-cylinder units should take place within the limited space does not is solved.
  • the invention has for its object to provide a drive device of the type mentioned in the preamble of claim 1, with which, despite the limited tube diameter of the rotating column, the minimum forces required to drive swing door leaves can be generated in both directions of movement.
  • the drive device assumes that the piston-cylinder drive should be arranged completely within the rotating column. Since the rotating column should not exceed a certain thickness, the first problem to be solved was to ensure a sufficiently large piston area on the piston-cylinder drive. This problem is solved by arranging two or more piston-cylinder units connected in parallel in the rotating column. Another problem to be solved was that it must be ensured that the torque generated there is absorbed at the connection point between the piston-cylinder drive and the screw gear so that the piston rod does not rotate.
  • the drive device according to the invention is structurally simple, requires very little space and it is possible to generate sufficient torque for driving the rotary column with relatively low pressures of the pressure medium, the counter torque occurring being absorbed in a particularly simple and effective manner.
  • the drive device according to the invention is primarily intended for moving swing door leaves, for example on buses or rail vehicles. However, it can be used in the same way as a drive device for a rotating column for moving trunk lids or flaps, such as those arranged on touring coaches. In this case, the rotating column is arranged horizontally.
  • FIGS. 1 and 2 for example on a bus (not shown in more detail) on a rotating column 1, which is rotatably connected to the door frame or the chassis 4 via brackets 2, 3, a swing door leaf 5 via pivot levers 6 and 7 in arranged in a known manner.
  • the swing door leaf 5 is further guided in a known manner with respect to the door frame or chassis by an only indicated guide device 8.
  • the opening angle is approx. 90 °.
  • the rotary column 1 which is designed as a hollow cylinder, is connected via a rotary bearing 27 to the holder 2 which is fixedly arranged on the chassis. Furthermore, a sleeve 9 is fixedly connected to the holder 2 via a connecting piece 10, which sleeve extends coaxially and in the longitudinal direction to the rotating column 1 over part of its length.
  • the piston-cylinder antenna Arranged within this sleeve 9 is the piston-cylinder antenna, which in the exemplary embodiment shown is made up of two piston-cylinder units. Of course, three or more piston-cylinder units can also be arranged in the same way.
  • the piston-cylinder units consist of a first jacket part 12, which is plugged onto the inner end of the connecting piece 10, a separator 20 plugged onto the other end of the first jacket part 12, a second jacket part 14 plugged onto the other end of the separator 20, the front end of which is closed by a further separating piece 22.
  • pistons 11 and 13 which are connected to one another via a piston rod 15 which is sealingly guided through coaxial bores of the separating pieces 20 and 22 and whose lower end in FIG.
  • a guide piece 30 which has a toothing extending in the axial direction which engages in a corresponding toothing on a counterpart 24 which is arranged non-rotatably at the lower end of the sleeve 9 in FIG. 3.
  • the guide piece 30 is in turn firmly connected to the drive spindle 25 of the screw gear.
  • the screw gear is not explained in more detail below and can be constructed, for example, as described in DE-PS 1 961 573.
  • the drive spindle can have helical grooves in which balls are arranged, which are mounted in a bearing cylinder 26 which is fixedly connected to the rotating column 1.
  • the compressed air for the two directions of movement of the piston-cylinder units is supplied in the following way:
  • the channel 29 opens directly into the interior of the jacket part 12.
  • the piston rod 15 has an axial bore 17 which on the one hand opens into the interior of the jacket part 12 and on the other hand is guided into the piston 13 and via a passage 18 and an outlet opening on the side of the piston 13 facing the piston 11 with the interior of the jacket part 14 communicates.
  • the bore 17 is passed further through the piston rod 15 and is connected in an analogous manner to the interior of the corresponding shell parts.
  • the channel 28 is connected to a feed channel 19 which runs between the outer wall of the jacket parts 12, 14 and the inner wall of the sleeve 9 and has an essentially annular cross section.
  • a feed channel 19 which runs between the outer wall of the jacket parts 12, 14 and the inner wall of the sleeve 9 and has an essentially annular cross section.
  • the connection between the upper and the lower area of the feed channel 19 takes place via a longitudinal groove 20a in the outer surface of the separator 20. If there are more than two piston-cylinder units the next separators are designed analogously. Only the last separating piece 22 has no longitudinal groove, but only an annular recess 22a.
  • the feed channel 19 is connected via passages 21 and 23 to outlet openings which are located in the separators 20 and .22 on the side facing the piston 11 and 13, respectively.
  • compressed air can be applied to the upper side of the pistons 11 and 13 in FIG. 3 via the channel 29, while the screw gear 25, 26 can be applied via the channel 28 and the supply channel 19 facing side of the pistons 11 and 13 can be acted upon with compressed air.
  • the individual parts of the piston-cylinder drive can be assembled in a simple manner by plugging them together and inserting them into the sleeve 9 from the side of the holder 2, the connection of the lower end of the piston rod 15 to the guide piece 23, for example via a Screw connection.
  • the sealing of the pistons 11 and 13 against the wall of the jacket parts 12 and 14, and the sealing of the spacer sleeve 16 arranged between the pistons 11 and 13, on the one hand, against the separating piece 20 and, on the other hand, against the piston rod 15, the sealing of the somewhat thickened lower end of the piston rod 15 against the separator 22 and finally the sealing of the jacket part 12 and the sleeve 9 on the connector 10 can be done by conventional ring seals.

Abstract

A device for activating a rotating post, especially one that moves a swinging-door panel in a motor vehicle and which need no additional space at each end of the rotating post. The post is rotatably mounted in a mount at each end. The post is a hollow cylinder that accommodates a worm gear driven by a bi-directional pneumatic piston-and-cylinder drive. The piston-and-cylinder drive is completely accommodated inside the post and consists of at least two piston-and-cylinder units pneumatically connected in parallel with a common piston rod. Each unit incorporates a piston and cylinder aligned within a sleeve that is rigidly fastened to and coaxial with one of the mounts. The pressure medium that drives the panel in one direction is supplied to each cylinder through a coaxial bore in the piston rod. The bore extends axially and connects all the pistons. The bore communicates with the insides of the cylinders in the vicinity of each piston face that faces the same direction. The pressure medium that drives the panel in the other direction is supplied through a supply channel with an essentially annular cross-section positioned between the outside surface of the cylinders and the inside surface of the sleeve. The supply channel communicates with the insides of the cylinders in the vicinity of each cylinder face opposite the piston faces that face the other direction.

Description

Die Erfindung betrifft eine Antriebsvorrichtung für eine Drehsäule, insbesondere zur Bewegung von Schwenktürflügeln an Kraftfahrzeugen, bei der die an ihren beiden Enden in Halterungen drehbar gelagerte Drehsäule als Hohlzylinder ausgebildet ist, in dem ein Schraubengetriebe angeordnet ist, das durch einen vollständig im Hohlzylinder angeordneten, in beiden Bewegungsrichtungen mit Druckmittel beaufschlagbaren pneumatischen Kolben-Zylinderantrieb antreibbar ist, der aus mindestens zwei an einem Ende fest mit einer Halterung der Drehsäule verbundenen Kolben-Zylinder-Einheiten besteht und dessen mit einem Teil des Schraubengetriebes verbundene Kolbenstange in einer an dem dem Schraubengetriebe zugewandten Ende fest angeordneten und mit einer der Haltererungen verbundenen axialen Führungsvorrichtung unverdrehbar geführt ist.The invention relates to a drive device for a rotating column, in particular for moving pivoting door leaves on motor vehicles, in which the rotating column, which is rotatably mounted at its two ends in brackets, is designed as a hollow cylinder in which a screw gear is arranged, which is arranged by a completely arranged in the hollow cylinder in Pneumatic piston-cylinder drive can be driven in both directions of movement, which consists of at least two piston-cylinder units which are fixedly connected at one end to a holder of the rotary column and whose piston rod connected to a part of the screw gear is fixed in one end to the screw gear arranged and with one of the brackets connected axial guide device is guided non-rotatably.

Eine derartige Antriebsvorrichtung ist beispielsweise in DE-A-2 538 529 beschrieben. Die bekannte Antriebsvorrichtung hat den Nachteil, daß die zum Öffnen und Schließen der Tür erzeugbaren Kräfte begrenzt sind, da die Drehsäule, in der die Antriebsvorrichtung angeordnet ist, einen bestimmten Maximaldurchmesser nicht überschreiten darf. Es ist im Zusammenhang mit der bekannten Antriebsvorrichtung zwar angegeben, daß der Kolben-Zylinderantrieb auch aus mehreren Kolben-Zylinder-Einheiten bestehen kann, wobei aber das Problem, wie innerhalb des begrenzten Raumes die Druckmittelzuführung zu mehreren Kolben-Zylinder-Einheiten erfolgen soll, nicht gelöst ist.Such a drive device is described for example in DE-A-2 538 529. The known drive device has the disadvantage that the forces that can be generated to open and close the door are limited, since the rotary column in which the drive device is arranged must not exceed a certain maximum diameter. It is stated in connection with the known drive device that the piston-cylinder drive can also consist of several piston-cylinder units, but the problem of how the pressure medium supply to several piston-cylinder units should take place within the limited space does not is solved.

Eine weitere Antriebsvorrichtung ist beispielsweise in der DE-C-1 961 573 beschrieben. Bei dieser bekannten Antriebsvorrichtung ist der Kolben-Zylinderantrieb außerhalb der Drehsäule an ihrem einen Ende angeordnet und über das innerhalb der Drehsäule angeordnete Schraubengetriebe mit der Drehsäule verbunden. Dieser Antrieb hat den Nachteil, daß oberhalb oder unterhalb der Drehsäule genügend Raum zur Anordnung des Kolben-Zylinderantriebes vorhanden sein muß.Another drive device is described for example in DE-C-1 961 573. In this known drive device, the piston-cylinder drive is arranged outside the rotary column at one end and connected to the rotary column via the screw gear arranged within the rotary column. This drive has the disadvantage that there must be enough space above or below the rotating column for the arrangement of the piston-cylinder drive.

Der Erfindung liegt die Aufgabe zugrunde, eine Antriebsvorrichtung der eingangs und im Oberbegriff des Patentanspruchs 1 erwähnten Art zu schaffen, mit der trotz des begrenzten Rohrdurchmessers der Drehsäule die zum Antrieb von Schwenktürflügeln erforderlichen Mindestkräfte in beiden Bewegungsrichtungen erzeugt werden können.The invention has for its object to provide a drive device of the type mentioned in the preamble of claim 1, with which, despite the limited tube diameter of the rotating column, the minimum forces required to drive swing door leaves can be generated in both directions of movement.

Die Lösung dieser Aufgabe erfolgt mit den im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmalen. Vorteilhafte Ausführungsformen sind in den Unteransprüchen beschrieben.This object is achieved with the features specified in the characterizing part of patent claim 1. Advantageous embodiments are described in the subclaims.

Die erfindungsgemäße Antriebsvorrichtung geht davon aus, daß der Kolben-Zylinderantrieb vollständig innerhalb der Drehsäule angeordnet sein soll. Da die Drehsäule eine bestimmte Dicke nicht überschreiten soll, bestand ein erstes zu lösendes Problem darin, eine genügend große Kolbenfläche am Kolben-Zylinderantrieb sicherzustellen. Dieses Problem wird gelöst, indem zwei oder mehr parallelgechaltete Kolben-Zylinder- Einheiten in der Drehsäule hintereinander angeordnet werden. Ein weiteres zu lösendes Problem bestand darin, daß dafür gesorgt werden muß, daß an der Verbindungsstelle zwischen Kolben-Zylinderantrieb und Schraubengetriebe das dort erzeugte Drehmoment aufgenommen wird, damit sich die Kolbenstange nicht mitdreht. Hierzu war es notwendig, die zwischen Kolben-Zylinderantrieb und Schraubengetriebe angeordnete Führungsvorrichtung ziemlich weit in die Drehsäule hineinzuverlegen, so daß sie, insbesondere wenn mehr als zwei Kolben-Zylindereinheiten hintereinander angeordnet sind, gesehen von der die Momente aufnehmenden Halterung in der Mitte oder gar über die Mitte der Drehsäule hinaus angeordnet ist. Die Lösung dieses Problems erfolgte dadurch, daß die Kolben-Zylindereinheiten innerhalb einer Hülse angeordnet sind, die unverdrehbar mit der Halterung an dem Ende der Drehsäule verbunden ist, in dem der Kolben-Zylinderantrieb angeordnet ist.The drive device according to the invention assumes that the piston-cylinder drive should be arranged completely within the rotating column. Since the rotating column should not exceed a certain thickness, the first problem to be solved was to ensure a sufficiently large piston area on the piston-cylinder drive. This problem is solved by arranging two or more piston-cylinder units connected in parallel in the rotating column. Another problem to be solved was that it must be ensured that the torque generated there is absorbed at the connection point between the piston-cylinder drive and the screw gear so that the piston rod does not rotate. For this purpose, it was necessary to move the guide device arranged between the piston-cylinder drive and the screw gearbox quite far into the rotating column, so that it can be seen from the torque-absorbing bracket in the middle or even above, especially if more than two piston-cylinder units are arranged one behind the other the center of the rotating column is arranged beyond. This problem was solved in that the piston-cylinder units are arranged within a sleeve which is non-rotatably connected to the holder at the end of the rotary column in which the piston-cylinder drive is arranged.

Da die Kolben-Zylindereinheiten in beiden Bewegungsrichtungen mit Druckmittel beaufschlagbar sein sollen, mußten in den relativ engen Raum zwei getrennte Zuführungen für das Druckmittel hineingeführt werden. Die eine Zuführung erfolgt über eine koaxiale Bohrung der Kolbenstange, während die andere Zuführung über einen zwischen den Zylindern und der Hülse angeordneten Ringkanal erfolgt.Since the piston-cylinder units should be pressurized in both directions of movement, two separate feeds for the pressure medium had to be introduced into the relatively narrow space. One feed takes place via a coaxial bore of the piston rod, while the other feed takes place via an annular channel arranged between the cylinders and the sleeve.

Auf diese Weise ist der zur Verfügung stehende Raum optimal ausgenutzt.In this way, the available space is optimally used.

Die erfindungsgemäße Antriebsvorrichtung ist konstruktiv einfach, benötigt sehr wenig Raum und es läßt sich mit relativ niedrigen Drücken des Druckmittels ein ausreichendes Drehmoment für den Antrieb der Drehsäule erzeugen, wobei das auftretende Gegenmoment in besonders einfacher und wirksamer Weise aufgenommen wird.The drive device according to the invention is structurally simple, requires very little space and it is possible to generate sufficient torque for driving the rotary column with relatively low pressures of the pressure medium, the counter torque occurring being absorbed in a particularly simple and effective manner.

Die erfindungsgemäße Antriebsvorrichtung ist in erster Linie zur Bewegung von Schwenktürflügeln, beispielsweise an Autobussen oder auch Schienenfahrzeugen, gedacht. Sie ist aber in gleicher Weise einsetzbar als Antriebsvorrichtung für eine Drehsäule zur Bewegung von Kofferraumdeckeln oder Klappen wie sie beispielsweise an Reisebussen angeordnet sind. In diesem Falle ist die Drehsäule waagerecht angeordnet.The drive device according to the invention is primarily intended for moving swing door leaves, for example on buses or rail vehicles. However, it can be used in the same way as a drive device for a rotating column for moving trunk lids or flaps, such as those arranged on touring coaches. In this case, the rotating column is arranged horizontally.

Im folgenden wird anhand der beigefügten Zeichnungen ein Ausführungsbeispiel für die erfindungsgemäße Antriebsvorrichtung näher erläutert.An exemplary embodiment of the drive device according to the invention is explained in more detail below with reference to the accompanying drawings.

In den Zeichnungen zeigen :

  • Fig. 1 eine Vorderansicht eines Schwenktürflügels für eine Antriebsvorrichtung nach der Erfindung ;
  • Fig. 2 eine Ansicht des Schwenktürflügels nach Fig.1 von oben ;
  • Fig. 3 in gegenüber Fig. 1 vergrößerter Darstellung ein Teilschnitt durch die Drehsäule nach Fig. 1 in Längsrichtung, wobei, um der besseren Deutlichkeit wegen, die Querabmessungen gegenüber den Längsabmessungen vergrößert dargestellt sind.
The drawings show:
  • Figure 1 is a front view of a swing door leaf for a drive device according to the invention.
  • Figure 2 is a view of the swing door according to Figure 1 from above.
  • Fig. 3 in an enlarged view compared to Fig. 1, a partial section through the rotary column according to Fig. 1 in the longitudinal direction, wherein, for the sake of clarity, the transverse dimensions are shown enlarged compared to the longitudinal dimensions.

Wie den Fig. 1 und 2 zu entnehmen ist beispielsweise an einem nicht näher dargestellten Autobus an einer Drehsäule 1, die über Halterungen 2, 3 drehbar mit dem Türrahmen bzw. dem Chassis 4 verbunden ist, ein Schwenktürflügel 5 über Schwenkhebel 6 und 7 in an sich bekannter Weise angeordnet. Der Schwenktürflügel 5 ist weiterhin in bekannter Weise gegenüber dem Türrahmen oder Chassis durch eine nur angedeutete Führungsvorrichtung 8 geführt.As can be seen in FIGS. 1 and 2, for example on a bus (not shown in more detail) on a rotating column 1, which is rotatably connected to the door frame or the chassis 4 via brackets 2, 3, a swing door leaf 5 via pivot levers 6 and 7 in arranged in a known manner. The swing door leaf 5 is further guided in a known manner with respect to the door frame or chassis by an only indicated guide device 8.

In Fig. 2 ist der Schwenktürflügel mit ausgezo- . genen Linien in der geschlossenen Stellung und mit strichpunktierten Linien in der geöffneten Stellung dargestellt.In Fig. 2 the swing door leaf is pulled out. shown lines in the closed position and with dash-dotted lines in the open position.

Der Offnungswinkel beträgt ca. 90°.The opening angle is approx. 90 °.

In Fig. 3 ist die vollständig in die Drehsäule 1 integrierte Antriebsvorrichtung der Drehsäule genauer dargestellt.In Fig. 3, the drive device of the rotary column fully integrated in the rotary column 1 is shown in more detail.

Die als Hohlzylinder ausgebildete Drehsäule 1 ist über ein Drehlager 27 mit der fest am Chassis angeordneten Halterung 2 verbunden. Weiterhin ist mit der Halterung 2 über ein Verbindungsstück 10 eine Hülse 9 fest verbunden, die sich koaxial und in Längsrichtung zur Drehsäule 1 über einen Teil ihrer Länge erstreckt. Innerhalb dieser Hülse 9 ist der Kolben-Zylinderantneb angeordnet, der im dargestellten Ausführungsbeispiel aus zwei Kolben-Zylinder-Einheiten aufgebaut ist. Selbstverständlich können in der gleichen Weise auch drei oder mehr Kolben-Zylinder-Einheiten angeordnet sein.The rotary column 1, which is designed as a hollow cylinder, is connected via a rotary bearing 27 to the holder 2 which is fixedly arranged on the chassis. Furthermore, a sleeve 9 is fixedly connected to the holder 2 via a connecting piece 10, which sleeve extends coaxially and in the longitudinal direction to the rotating column 1 over part of its length. Arranged within this sleeve 9 is the piston-cylinder antenna, which in the exemplary embodiment shown is made up of two piston-cylinder units. Of course, three or more piston-cylinder units can also be arranged in the same way.

Die Kolben-Zylinder-Einheiten bestehen aus einem ersten Mantelteil 12, das dichtend auf das innere Ende des Verbindungsstückes 10 aufgesteckt ist, einem auf das andere Ende des ersten Mantelteils 12 aufgesteckten Trennstück 20, einem am anderen Ende des Trennstückes 20 aufgesteckten zweiten Mantelteil 14, dessen vorderes Ende mit einem weiteren Trennstück 22 abgeschlossen ist. In den so gebildeten zwei Zylinderinnenräumen befinden sich Kolben 11 und 13, die über eine Kolbenstange 15 miteinander verbunden sind, die durch koaxiale Bohrungen der Trennstücke 20 und 22 dichtend hindurchgeführt ist und deren in Fig. 3 unteres Ende, das dem Schraubengetriebe zugewandt ist, fest mit einem Führungsstück 30 verbunden ist, das eine in axialer Richtung verlaufende Verzahnung besitzt, die in eine entsprechende Verzahnung an einem Gegenstück 24 eingreift, das unverdrehbar am in Fig. 3 unteren Ende der Hülse 9 angeordnet ist. Das Führungsstück 30 ist seinerseits fest mit der Antriebsspindel 25 des Schraubengetriebes verbunden.The piston-cylinder units consist of a first jacket part 12, which is plugged onto the inner end of the connecting piece 10, a separator 20 plugged onto the other end of the first jacket part 12, a second jacket part 14 plugged onto the other end of the separator 20, the front end of which is closed by a further separating piece 22. In the two cylinder interiors thus formed there are pistons 11 and 13 which are connected to one another via a piston rod 15 which is sealingly guided through coaxial bores of the separating pieces 20 and 22 and whose lower end in FIG. 3, which faces the screw gear, is fixed is connected to a guide piece 30 which has a toothing extending in the axial direction which engages in a corresponding toothing on a counterpart 24 which is arranged non-rotatably at the lower end of the sleeve 9 in FIG. 3. The guide piece 30 is in turn firmly connected to the drive spindle 25 of the screw gear.

Das Schraubengetriebe wird im folgenden nicht näher erläutert und kann beispielsweise so aufgebaut sein wie in DE-PS 1 961 573 beschrieben. So kann die Antriebsspindel schraubenlinienförmige Nuten aufweisen, in der Kugeln angeordnet sind, die in einem mit der Drehsäule 1 fest verbundenen Lagerzylinder 26 gelagert sind.The screw gear is not explained in more detail below and can be constructed, for example, as described in DE-PS 1 961 573. For example, the drive spindle can have helical grooves in which balls are arranged, which are mounted in a bearing cylinder 26 which is fixedly connected to the rotating column 1.

Die Zuführung der Druckluft für die beiden Bewegungsrichtungen der Kolben-Zylinder-Einheiten geschieht in folgender Weise :The compressed air for the two directions of movement of the piston-cylinder units is supplied in the following way:

In dem Verbindungsstück 10 der Halterung 2 sind zwei Zuführungs/Abführungs-Kanäle 28 und 29 angeordnet.In the connector 10 of the holder 2, two feed / discharge channels 28 and 29 are arranged.

Der Kanal 29 mündet direkt in den Innenraum des Mantelteils 12 ein. Die Kolbenstange 15 besitzt eine axiale Bohrung 17, die sich einerseits in den Innenraum des Mantelteils 12 öffnet und andererseits in den Kolben 13 hineingeführt ist und über einen Durchlaß 18 und eine Austrittsöffnung an der dem Kolben 11 zugewandten Seite des Kolbens 13 mit dem Innenraum des Mantelteils 14 in Verbindung steht.The channel 29 opens directly into the interior of the jacket part 12. The piston rod 15 has an axial bore 17 which on the one hand opens into the interior of the jacket part 12 and on the other hand is guided into the piston 13 and via a passage 18 and an outlet opening on the side of the piston 13 facing the piston 11 with the interior of the jacket part 14 communicates.

Bei Ausführungsbeispielen mit mehr als zwei Kolben-Zylinder-Einheiten ist die Bohrung 17 noch weiter durch die Kolbenstange 15 hindurchgeführt und steht in analoger Weise in Verbindung mit den Innenräumen der entsprechenden Mantelteile.In embodiments with more than two piston-cylinder units, the bore 17 is passed further through the piston rod 15 and is connected in an analogous manner to the interior of the corresponding shell parts.

Der Kanal 28 ist mit einem Zuführungskanal 19 verbunden, der zwischen der Außenwand der Mantelteile 12, 14 und der Innenwand der Hülse 9 verläuft und im wesentlichen ringförmigen Querschnitt aufweist. Im Bereich des Trennstücks 20, das sich an der Innenwand der Hülse 9 abstützt, erfolgt die Verbindung zwischen dem oberen und dem unteren Bereich des Zuführungskanals 19 über eine Längsnut 20a in der Außenfläche des Trennstücks 20. Bei mehr als zwei, Kolben-Zylinder-Einheiten sind die nächstfolgenden Trennstücke analog ausgebildet. Lediglich das letzte Trennstück 22 besitzt keine Längsnut, sondern lediglich eine ringförmige Ausnehmung 22a. Im Bereich der Längsnut 20a bzw. der Ausnehmung 22a ist der Zuführungskanal 19 über Durchlässe 21 und 23 mit Austrittsöffnungen verbunden, die sich in den Trennstücken 20 und .22 an der dem Kolben 11 bzw. 13 zugewandten Seite befinden. Wie aus Fig. 3 unmittelbar ersichtlich, ist somit über den Kanal 29 die in Fig. 3 obere, der Halterung 2 zugewandten Seite der Kolben 11 und 13 mit Druckluft beaufschlagbar, während über den Kanal 28 und dem Zuführungskanal 19 die dem Schraubengetriebe 25, 26 zugewandte Seite der Kolben 11 und 13 mit Druckluft beaufschlagbar ist.The channel 28 is connected to a feed channel 19 which runs between the outer wall of the jacket parts 12, 14 and the inner wall of the sleeve 9 and has an essentially annular cross section. In the area of the separator 20, which is supported on the inner wall of the sleeve 9, the connection between the upper and the lower area of the feed channel 19 takes place via a longitudinal groove 20a in the outer surface of the separator 20. If there are more than two piston-cylinder units the next separators are designed analogously. Only the last separating piece 22 has no longitudinal groove, but only an annular recess 22a. In the area of the longitudinal groove 20a or the recess 22a, the feed channel 19 is connected via passages 21 and 23 to outlet openings which are located in the separators 20 and .22 on the side facing the piston 11 and 13, respectively. As can be seen directly from FIG. 3, compressed air can be applied to the upper side of the pistons 11 and 13 in FIG. 3 via the channel 29, while the screw gear 25, 26 can be applied via the channel 28 and the supply channel 19 facing side of the pistons 11 and 13 can be acted upon with compressed air.

Damit sind diese Kolben pneumatisch parallelgeschaltet und die Wirkung der Kolbenflachen addiert sich.This means that these pistons are pneumatically connected in parallel and the effect of the piston surfaces adds up.

Bei Zuführung von Druckluft zum Kanal 29 bewegen sich die Kolben 11 und 13 in Fig. 3 nach unten, während sie sich bei Zufuhr von Druckluft zum Kanal 28 nach oben bewegen.When compressed air is supplied to the channel 29, the pistons 11 and 13 move downward in FIG. 3, while when compressed air is supplied to the channel 28 they move upward.

Die Einzelteile des Kolben-Zylinder-Antriebs können in einfacher Weise montiert werden, indem sie zusammengesteckt und von der Seite der Halterung 2 her in die Hülse 9 eingeschoben werden, wobei die Verbindung des unteren Endes der Kolbenstange 15 mit dem Führungsstück 23, beispielsweise über eine Schraubverbindung, erfolgen kann.The individual parts of the piston-cylinder drive can be assembled in a simple manner by plugging them together and inserting them into the sleeve 9 from the side of the holder 2, the connection of the lower end of the piston rod 15 to the guide piece 23, for example via a Screw connection.

Die Abdichtung der Kolben 11 und 13 gegen die Wand der Mantelteile 12 und 14, sowie die Abdichtung der zwischen den Kolben 11 und 13 angeordneten Abstandshülse 16 einerseits gegen das Trennstück 20 und andererseits gegen die Kolbenstange 15, die Abdichtung des etwas verdickten unteren Endes der Kolbenstange 15 gegen das Trennstück 22 und schließlich die Abdichtung des Mantelteils 12 sowie der Hülse 9 am Verbindungsstück 10 können durch übliche Ringdichtungen erfolgen.The sealing of the pistons 11 and 13 against the wall of the jacket parts 12 and 14, and the sealing of the spacer sleeve 16 arranged between the pistons 11 and 13, on the one hand, against the separating piece 20 and, on the other hand, against the piston rod 15, the sealing of the somewhat thickened lower end of the piston rod 15 against the separator 22 and finally the sealing of the jacket part 12 and the sleeve 9 on the connector 10 can be done by conventional ring seals.

Claims (4)

1. Driving arrangement for a heel post, in particular for moving hinged door leaves on power- driven vehicles, in which the heel post, which is pivotably mounted at its two ends in mountings (2, 3), is designed as a hollow cylinder (4) in which is arranged a screw transmission (25, 26) which can be driven by a pneumatic piston/cylinder drive (11 to 15) which is arranged fully in the hollow cylinder (1), can be subjected to pressure medium in both directions of movement, comprises at least two piston/cylinder units (11, 12 and 13, 14 respectively) connected firmly at one end to a mounting (2) of the heel post (1) and whose piston rod (15), which is connected to a part of the screw transmission, is guided non- rotatably in an axial guiding arrangement (30, 24) arranged firmly at the end facing the screw transmission (25, 26) and connected to one of the mountings (2), characterized in that the piston/cylinder units (11, 12 and 13, 14 respectively) are connected in parallel to one another and are arranged one behind the other inside a sleeve (9) connected firmly at one end to a mounting (2) of the heel post (1) and extending coaxially to it, and the feed of the pressure medium for one direction of movement to each cylinder (14) following the first cylinder (12) is effected via a coaxial bore (17) which is arranged in the piston rod (15) connecting all pistons (11, 13) and passing through in the axial direction and is connected in each case in the region of the piston surfaces facing in a common direction to the cylinder interiors, while the feed of the pressure medium for the other direction of movement is effected via a feed channel (19) of essentially annular cross-section which is arranged between the outer wall of the cylinders (12, 14) and the inner wall of the sleeve (9) and is connected, in each case in the region of those front faces of the cylinders which are situated opposite the piston surfaces pointing in the other common direction, to the cylinder interiors.
2. Driving arrangement according to Claim 1, characterized in that the piston/cylinder drive is constructed from a plurality of component parts, which can be pushed into the sleeve one after the other from one side and can be fitted together, namely :
a) tubular shell parts (12, 14) of the individual cylinders, the outside diameter of which is smaller by a predetermined amount than the inside diameter of the sleeve (9) ;
b) cylindrical separating pieces (20, 22) which are arranged. between these shell parts (12, 14) and onto which the shell parts (12, 14) are slipped, the outside diameter of which corresponds at least in a part section of their length to the inside diameter of the sleeve (9) and which have a coaxial bore for the passage of the piston rod (15), and, at the outer rim, at least one full- length longitudinal groove (20a) or a recess (22a) having a passage (21, 23) opening towards one of their front faces ;
c) a piston rod (15) which runs through in the axial direction, is passed sealingly through the separating pieces (20, 22) and on which pistons (11, 13) are secured at predetermined points and which has an axial bore (17) as well as, in each case, in the region of the pistons (11, 13), at least one passage (18) which is connected to an outlet opening in each case one of the piston surfaces.
3. Driving arrangement according to Claim 2, characterized in that tubular distance sleeves (16) which are supported on the mutually opposite piston surfaces of successive pistons are pushed onto the piston rod (15), the annular passage clearances between the distance sleeves (16) and the piston rod (15) and between the distance sleeves (16) and the separating pieces (20, 22) being in each case sealed with ring seals.
4. Driving arrangement according to one of Claims 1 to 3, characterized in that that end of the piston rod (15) which faces the screw transmission is connected firmly to a guiding piece (30) which has a toothing which extends in the axial direction and engages in a corresponding toothing on a counterpart (24) firmly connected to the sleeve (9), and the guiding piece (30) is connected firmly to the driving screw (25) of the screw transmission (25, 26).
EP86111752A 1985-09-12 1986-08-25 Actuating device for rotatable column, especially for moving a pivoting door wing of a motor vehicle Expired EP0218072B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111752T ATE44301T1 (en) 1985-09-12 1986-08-25 DRIVE DEVICE FOR A ROTATING COLUMN, IN PARTICULAR FOR MOVEMENT OF PIVOT DOORS ON MOTOR VEHICLES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3532514A DE3532514C1 (en) 1985-09-12 1985-09-12 Drive device for a rotating column, in particular for moving pivoting door leaves on motor vehicles
DE3532514 1985-09-12

Publications (3)

Publication Number Publication Date
EP0218072A2 EP0218072A2 (en) 1987-04-15
EP0218072A3 EP0218072A3 (en) 1987-06-03
EP0218072B1 true EP0218072B1 (en) 1989-06-28

Family

ID=6280749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111752A Expired EP0218072B1 (en) 1985-09-12 1986-08-25 Actuating device for rotatable column, especially for moving a pivoting door wing of a motor vehicle

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US (1) US4731886A (en)
EP (1) EP0218072B1 (en)
AT (1) ATE44301T1 (en)
DE (2) DE3532514C1 (en)
ES (1) ES2002142A6 (en)

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Also Published As

Publication number Publication date
EP0218072A2 (en) 1987-04-15
ES2002142A6 (en) 1988-07-16
ATE44301T1 (en) 1989-07-15
US4731886A (en) 1988-03-22
DE3664145D1 (en) 1989-08-03
DE3532514C1 (en) 1987-04-23
EP0218072A3 (en) 1987-06-03

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