EP0463349A1 - Power cylinder - Google Patents

Power cylinder Download PDF

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Publication number
EP0463349A1
EP0463349A1 EP19910107995 EP91107995A EP0463349A1 EP 0463349 A1 EP0463349 A1 EP 0463349A1 EP 19910107995 EP19910107995 EP 19910107995 EP 91107995 A EP91107995 A EP 91107995A EP 0463349 A1 EP0463349 A1 EP 0463349A1
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EP
European Patent Office
Prior art keywords
working
sensor
chamber
working cylinder
cylinder according
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Granted
Application number
EP19910107995
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German (de)
French (fr)
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EP0463349B1 (en
Inventor
Manfred Siebold
Norbert Dipl.-Ing. Schneider (Fh)
Friedbert Roether
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP0463349A1 publication Critical patent/EP0463349A1/en
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    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke

Definitions

  • the invention relates to a cylinder according to the preamble of the main claim.
  • a cylinder is known (DE-AS 11 48 451).
  • These working cylinders have the advantage that the position of the working piston movable in the working cylinder can be recognized at any time.
  • electrical detection means such as limit switches or the like.
  • Working cylinders of this type have recently also been used in connection with electronic switching devices, and they are provided on vehicles in which, for example, they act as actuators for electrically controlled clutches of vehicle engines.
  • a working cylinder equipped in this way is then also "capable of wading" because access to the snorkel with its opening can be raised so that no water is sucked into the breathing chamber when crossing water courses.
  • the working cylinder mentioned at the outset, with the characterizing features of the main claim, has the advantage that no special means are required to guide the breathing air.
  • FIG. 1 shows a working cylinder with a sensor, both in section and
  • FIG. 2 shows the sensor on an enlarged scale, also in section.
  • a working cylinder 1 has a housing 2, which consists of a largely smooth-walled cylinder piece 3 and a connector 4 and a cover 5 and 6 each for the cylinder piece and connector.
  • the cover 5 intended for the cylinder piece 3 has a central hole through which one end of a piston rod 7 projects in a sealed manner to the outside.
  • the piston rod 7 has a recess 8 for receiving a push rod 9 with which to actuate a clutch, not shown, i.e. is to move in and out.
  • the piston rod 7 carries on its other side a working piston 10 which separates a working chamber 11 from a breathing chamber 12 facing the cover 5 in the working cylinder 1.
  • the piston rod 7 is extended through the working chamber 11 by means of a hollow cylindrical immersion body 13 which is provided with an axial channel 13 'and which is fastened to the piston rod 7 by means of a snap ring 14 and sealing ring 15.
  • the immersion body 13 is delimited at one end by a radial channel 30 which opens into the breathing chamber 12.
  • an axial passage 31 is provided for an outside air connection (cf. FIG. 2).
  • the immersion body 13 is made of aluminum material and - as can best be seen in FIG. 2 - is overlapped by a plastic coil body 16 which carries the windings of a coil 17 which is surrounded by a shielding sleeve 18 made of ferritic material.
  • Immersion body 13, bobbin 16 with coil 17 and shielding sleeve 18 form a sensor 13, 16, 17, 18, the shielding sleeve 18 is mounted in a partition 19 and carries on its side facing the working piston 10 a sleeve seal 21 fixed by means of a snap ring 20, which the outer surface of the immersion body 13 can slide.
  • the connections 24 and 25 are connected to electronics 32, which in turn are connected in an electrically conductive manner to a central plug 26 which is fastened to the cover 6.
  • the partition 19 accommodates two solenoid valves in an axially parallel arrangement, a ventilation solenoid valve 27 and a ventilation solenoid valve 28 which enter the control unit chamber 22
  • the ventilation solenoid valve 27 is connected to a compressed air source 33 and the ventilation solenoid valve 28 and the control unit chamber are connected to an outside air point 29.
  • the working cylinder 1 is intended for actuating a clutch, which is fully engaged in the drawn position of the working piston 10.
  • the ventilation solenoid valve 27 is switched over to release the clutch. Compressed air flows into the working chamber 11 and the working piston 10 moves to the left.
  • the breathing chamber 12 reduces its volume, and the breathing air flows through the axial channel 13 'of the immersion body 13 via the cover 6 to the outside air, or - as described later - is only pumped around via the axial channel 13' of the immersion body 13.
  • the ventilation solenoid valve 27 is switched off and the ventilation solenoid valve 28 is switched on.
  • the working chamber 11 is vented.
  • the springs provided in the clutch which are tensioned when the clutch is released, now press the working piston 10 to the right in the direction of the starting position via the push rod 9.
  • the breathing chamber 12 Since the breathing chamber 12 enlarges in the process, compressed air is drawn into the breathing chamber 12 from the working chamber 11 or outside air.
  • the breathing chamber 12 either breathes to or from the outside air or it breathes to or from the working chamber 11, but the path of the breathing air always leads through the axial channel 13 'of the hollow sensor 13, 16, 17, 18.
  • the breathing air, which the control devices Chamber 22 and the hollow sensor 13, 16, 17, 18 flows through, can also cool the sensor.
  • the working piston 10 again reaches its right end position, in which the clutch is fully engaged.
  • the hollow cylindrical sensor 13, 16, 17, 18 works as a position sensor for the working piston 10 by measuring the distance traveled by the working piston. For this purpose, an alternating current is applied to the coil 17, so that when the immersion depth of the immersion body 13 changes, a corresponding electrical signal is obtained which is evaluated in an electrical switching device. In this way, different engagement speeds can then be achieved in addition to the displacement measurement.
  • solenoid valves can be used instead of the two solenoid valves 27 and 28.
  • the working piston 10 can thus be positioned exactly with the aid of the hollow cylindrical position sensor 13, 16, 17, 18.
  • the four solenoid valves are controlled directly by the electronics. Two solenoid valves are used to release the clutch and to engage the clutch, with the two solenoid valves being followed by orifices with different diameters. Different engagement speeds of the clutch can then be realized by frequency and / or pulse width modulated control of the solenoid valves.

Abstract

A power cylinder (1) is proposed in which the position of a working piston (10) and the distance it covers in each case and the speed with which it covers this distance are measured by a hollow-cylindrical sensor (13, 16, 17, 18) and the result is fed to an electronic switching device. The sensor (13, 16, 17, 18) serves to pass through the aspirated air to an aspiration chamber (12) of the power cylinder (1), as a result of which the sensor can be cooled. <??>The power cylinder (1) is intended for use in motor vehicle clutches. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung bezieht sich auf einen Arbeitszylinder nach der Gattung des Hauptanspruchs. Ein derartiger Arbeitszylinder ist bekannt (DE-AS 11 48 451). Diese Arbeitszylinder haben den Vorteil, daß die Stellung des im Arbeitszylinder beweglichen Arbeitskolbens jederzeit zu erkennen ist. Es gibt auch schon entsprechende elektrische Erkennungsmittel, wie Endschalter oder dgl.The invention relates to a cylinder according to the preamble of the main claim. Such a cylinder is known (DE-AS 11 48 451). These working cylinders have the advantage that the position of the working piston movable in the working cylinder can be recognized at any time. There are also corresponding electrical detection means, such as limit switches or the like.

Arbeitszylinder dieser Art werden in jüngster Zeit auch im Zusammenhang mit elektronischen Schalteinrichtungen verwendet, und sie werden auf Fahrzeugen vorgesehen, bei denen sie beispielsweise die Aufgabe von Stellglieder von elektrisch gesteuerten Kupplungen von Fahrzeug-Motoren übernehmen. Auf Fahrzeugen besteht aber immer das Problem, daß eine auf der Rückseite des Arbeitskolbens liegende Atmungskammer bei ihrer durch die Kolbenbewegung bewirkten Ausdehnung keinen Schmutz oder - im Winter - Salznebel ansaugen darf. Solche Femdstoffe könnten dort nämlich zur Korrosion führen, wodurch der Arbeitszylinder blockiert.Working cylinders of this type have recently also been used in connection with electronic switching devices, and they are provided on vehicles in which, for example, they act as actuators for electrically controlled clutches of vehicle engines. On vehicles, however, there is always the problem that a breathing chamber lying on the back of the working piston must not suck in dirt or - in winter - salt spray when it is expanded by the piston movement. Such foreign substances could cause corrosion there, which blocks the working cylinder.

Es ist deshalb auch bereits vorgeschlagen worden, die Atmungskammer über einen Schnorchel mit Filter mit der Außenluft zu verbinden (DE-OS 24 30 394).It has therefore already been proposed to connect the breathing chamber to the outside air via a snorkel with filter (DE-OS 24 30 394).

Ein derart augerüsteter Arbeitszlyinder ist dann auch "watfähig", weil Zugang zum der Schnorchel mit seiner Öffnung so hochgelegt werden kann, daß beim Durchqueren von Wasserläufen kein Wasser in die Atmungskammer eingesaugt wird.A working cylinder equipped in this way is then also "capable of wading" because access to the snorkel with its opening can be raised so that no water is sucked into the breathing chamber when crossing water courses.

Nachteilig dabei ist, daß stets besondere Mittel vorgesehen werden müssen, um ein schmutzfreies Atmen der Atmungskammer zu gewährleisten. Bei dem zuerst genannten Arbeitszylinder ist es außerdem nachteilig, daß der Sensoreinbau Platz verbraucht.The disadvantage here is that special means must always be provided in order to ensure that the breathing chamber breathes without dirt. In the case of the first-mentioned working cylinder, it is also disadvantageous that the sensor installation takes up space.

Vorteile der ErfindungAdvantages of the invention

Der eingangs genannte Arbeitszylinder mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß zur Führung der Atemluft keine besonderen Mittel notwendig sind.The working cylinder mentioned at the outset, with the characterizing features of the main claim, has the advantage that no special means are required to guide the breathing air.

Außerdem ist es von Vorteil, daß zum Einbau des Sensors kein besonderer Platz vorgesehen sein muß.It is also advantageous that no special space has to be provided for installing the sensor.

Weitere vorteilhafte Mermale der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous features of the invention result from the subclaims.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen: Figur 1 einen Arbeitszylinder mit einem Sensor, beide im Schnitt und Figur 2 den Sensor in vergrößertem Maßstab, ebenfalls im Schnitt.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. 1 shows a working cylinder with a sensor, both in section and FIG. 2 shows the sensor on an enlarged scale, also in section.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Ein Arbeitszylinder 1 hat ein Gehäuse 2, das aus einem weitgehend glattwandigen Zylinderstück 3 und einem Anschlußstück 4 sowie je einem Dekkel 5 und 6 für Zylinderstück und Anschlußstück besteht. Der für das Zylinderstück 3 bestimmte Deckel 5 hat ein zentrisches Loch, durch das ein Ende einer Kolbenstange 7 abgedichtet nach außen ragt.A working cylinder 1 has a housing 2, which consists of a largely smooth-walled cylinder piece 3 and a connector 4 and a cover 5 and 6 each for the cylinder piece and connector. The cover 5 intended for the cylinder piece 3 has a central hole through which one end of a piston rod 7 projects in a sealed manner to the outside.

Die Kolbenstange 7 hat eine Ausnehmung 8 zur Aufnahme einer Druckstange 9, mit der eine nicht dargestellte Kupplung zu betätigen, d.h. ein-und auszurücken ist.The piston rod 7 has a recess 8 for receiving a push rod 9 with which to actuate a clutch, not shown, i.e. is to move in and out.

Die Kolbenstange 7 trägt auf ihrer anderen Seite einen Arbeitskolben 10, der in dem Arbeitszylinder 1 eine Arbeitskammer 11 von einer dem Deckel 5 zugekehrten Atmungskammer 12 trennt. Durch einen hohlzylindrischen, mit einem Axialkanal 13' versehenen Tauchkörper 13, der mittels Sprengring 14 und Dichtring 15 an der Kolbenstange 7 befestigt ist, ist die Kolbenstange 7 durch die Arbeitskammer 11 hindurch verlängert. An seinem einem Ende ist der Tauchkörper 13 von einem Radialkanal 30 begrenzt, der in die Atmungskammer 12 mündet. Auf der anderen Seite des Tauchkörpers 13 ist ein Axialdurchgang 31 zu einer Au- βenluftverbindung vorgesehen (vgl. Figur 2).The piston rod 7 carries on its other side a working piston 10 which separates a working chamber 11 from a breathing chamber 12 facing the cover 5 in the working cylinder 1. The piston rod 7 is extended through the working chamber 11 by means of a hollow cylindrical immersion body 13 which is provided with an axial channel 13 'and which is fastened to the piston rod 7 by means of a snap ring 14 and sealing ring 15. The immersion body 13 is delimited at one end by a radial channel 30 which opens into the breathing chamber 12. On the other side of the immersion body 13, an axial passage 31 is provided for an outside air connection (cf. FIG. 2).

Der Tauchkörper 13 besteht aus Alu-Material und wird - wie am besten in der Figur 2 zu erkennen ist - von einem Kunststoff-Spulenkörper 16 übergriffen, der die Wicklungen einer Spule 17 trägt, die von einer Abschirmhülse 18 aus ferritischem Material umgeben ist. Tauchkörper 13, Spulenkörper 16 mit Spule 17 und Abschirmhülse 18 bilden einen Sensor 13, 16, 17, 18,Die Abschirmhülse 18 ist in einer Trennwand 19 gelagert und trägt auf ihrer dem Arbeitskolben 10 zugekehrten Seite eine mittels Sprengring 20 fixierte Manschettendichtung 21, die auf der Mantelfläche des Tauchkörpers 13 gleiten kann.The immersion body 13 is made of aluminum material and - as can best be seen in FIG. 2 - is overlapped by a plastic coil body 16 which carries the windings of a coil 17 which is surrounded by a shielding sleeve 18 made of ferritic material. Immersion body 13, bobbin 16 with coil 17 and shielding sleeve 18 form a sensor 13, 16, 17, 18, the shielding sleeve 18 is mounted in a partition 19 and carries on its side facing the working piston 10 a sleeve seal 21 fixed by means of a snap ring 20, which the outer surface of the immersion body 13 can slide.

Der Spulenkörper 16 samt Abschirmhülse 18 ragt mit seinem dem Arbeitskolben 10 abgekehrten Ende in eine Steuergeräte-Kammer 22. Er ist dort mit einem Kopf 23 versehen, durch den zwei Spulenanschlüsse 24 und 25 hindurchgeführt sind. Die Anschlüsse 24 und 25 sind an eine Elektronik 32 angeschlossen, die wiederum mit einem Zentralstecker 26 elektrisch leitend verbunden ist, der am Deckel 6 befestigt ist.The coil body 16 together with the shielding sleeve 18 protrudes with its end facing away from the working piston 10 into a control unit chamber 22. It is provided there with a head 23 through which two coil connections 24 and 25 are passed. The connections 24 and 25 are connected to electronics 32, which in turn are connected in an electrically conductive manner to a central plug 26 which is fastened to the cover 6.

Die Trennwand 19 nimmt in achsparalleler Anordnung zwei Magnetventile, ein Belüftungs-Magnetventil 27 und ein Entlüftungs-Magnetventil 28 auf, die in die Steuergeräte-Kammer 22 hineinragen. Das Belüftungs-Magnetventil 27 ist an eine Druckluftquelle 33 und das Entlüftungs-Magnetventil 28 und die Steuergeräte-Kammer sind an eine Außenluftstelle 29 angeschlossen.The partition 19 accommodates two solenoid valves in an axially parallel arrangement, a ventilation solenoid valve 27 and a ventilation solenoid valve 28 which enter the control unit chamber 22 The ventilation solenoid valve 27 is connected to a compressed air source 33 and the ventilation solenoid valve 28 and the control unit chamber are connected to an outside air point 29.

WirkungsweiseMode of action

Der Arbeitszylinder 1 ist zur Betätigung einer Kupplung bestimmt, die in der gezeichneten Stellung des Arbeitskolbens 10 voll eingerückt ist. Zum Lösen der Kupplung wird das Belüftungs-Magnetventil 27 umgeschaltet. Druckluft strömt in die Arbeitskammer 11 und der Arbeitskolben 10 bewegt sich nach links. Dabei verkleinert die Atmungskammer 12 ihr Volumen, und die Atemluft strömt durch den Axialkanal 13' des Tauchkörpers 13 über den Deckel 6 zur Außenluft, oder sie wird - wie später beschrieben - über den Axialkanal 13' des Tauchkörpers 13 lediglich umgepumpt.The working cylinder 1 is intended for actuating a clutch, which is fully engaged in the drawn position of the working piston 10. The ventilation solenoid valve 27 is switched over to release the clutch. Compressed air flows into the working chamber 11 and the working piston 10 moves to the left. The breathing chamber 12 reduces its volume, and the breathing air flows through the axial channel 13 'of the immersion body 13 via the cover 6 to the outside air, or - as described later - is only pumped around via the axial channel 13' of the immersion body 13.

Zum Wiedereinrasten der Kupplung wird das Belüftungs-Magnetventil 27 abgeschaltet und das Entlüftungs-Magnetventil 28 eingeschaltet. Die Arbeitskammer 11 wird entlüftet. Die in der Kupplung vorgesehenen, bei Lösen der Kupplung gespannten Federn drücken nun über die Druckstange 9 den Arbeitskolben 10 nach rechts in Richtung Ausgangsstellung.To re-engage the clutch, the ventilation solenoid valve 27 is switched off and the ventilation solenoid valve 28 is switched on. The working chamber 11 is vented. The springs provided in the clutch, which are tensioned when the clutch is released, now press the working piston 10 to the right in the direction of the starting position via the push rod 9.

Da sich dabei die Atmungskammer 12 vergrößert, wird Druckluft von der Arbeitskammer 11 oder Außenluft in die Atmungskammer 12 eingesaugt. Die Atmungskammer 12 atmet also entweder zu oder von der Außenluft oder sie atmet zu oder von der Arbeitskammer 11, der Weg der Atemluft führt aber immer durch den Axialkanal 13' des hohlen Sensors 13, 16, 17, 18. Die Atemluft, welche die Steuergeräte-Kammer 22 und den hohlen Sensor 13, 16, 17, 18 durchströmt, kann auch den Sensor kühlen.Since the breathing chamber 12 enlarges in the process, compressed air is drawn into the breathing chamber 12 from the working chamber 11 or outside air. The breathing chamber 12 either breathes to or from the outside air or it breathes to or from the working chamber 11, but the path of the breathing air always leads through the axial channel 13 'of the hollow sensor 13, 16, 17, 18. The breathing air, which the control devices Chamber 22 and the hollow sensor 13, 16, 17, 18 flows through, can also cool the sensor.

Am Ende der Entlüftung der Arbeitskammer 11 erreicht der Arbeitskolben 10 wieder seine rechte Endstellung, in der die Kupplung voll eingerückt ist. Der hohlzylindrische Sensor 13, 16, 17, 18 arbeitet dabei als Stellungs-Sensor für den Arbeitskolben 10, indem er den jeweils zurückgelegten Weg des Arbeitskolbens mißt. Dazu wird an die Spule 17 ein Wechselstrom angelegt, wodurch man bei Veränderung der Eintauchtiefe des Tauchkörpers 13 ein entsprechendes elektrisches Signal erhält, das in einer elektrischen Schalteinrichtung ausgewertet wird. Auf diese Weise können dann neben der Wegmessung auch verschiedene Einrückgeschwindigkeiten erzielt werden.At the end of the venting of the working chamber 11, the working piston 10 again reaches its right end position, in which the clutch is fully engaged. The hollow cylindrical sensor 13, 16, 17, 18 works as a position sensor for the working piston 10 by measuring the distance traveled by the working piston. For this purpose, an alternating current is applied to the coil 17, so that when the immersion depth of the immersion body 13 changes, a corresponding electrical signal is obtained which is evaluated in an electrical switching device. In this way, different engagement speeds can then be achieved in addition to the displacement measurement.

In Erweiterung der Anlage können anstelle der zwei Magnetventile 27 und 28 auch vier Magnetventile verwendet werden. Damit kann der Arbeitskolben 10 mit Hilfe des hohlzylindrischen Stellungssensors 13, 16, 17, 18 exakt positioniert werden. Dazu werden die vier Magnetventile über die Elektronik direkt gesteuert. Je zwei Magnetventile werden für das Lösen der Kupplung und für das Einrücken der Kupplung verwendet, wobei den jeweils zwei Magnetventilen Blenden mit unterschiedlichen Durchmessern nachgeschaltet werden. Durch eine frequenz- und/oder pulsbreitenmodulierte Ansteuerung der Magnetventile können dann verschiedene Einrückgeschwindigkeiten der Kupplung realisiert werden.As an extension of the system, four solenoid valves can be used instead of the two solenoid valves 27 and 28. The working piston 10 can thus be positioned exactly with the aid of the hollow cylindrical position sensor 13, 16, 17, 18. The four solenoid valves are controlled directly by the electronics. Two solenoid valves are used to release the clutch and to engage the clutch, with the two solenoid valves being followed by orifices with different diameters. Different engagement speeds of the clutch can then be realized by frequency and / or pulse width modulated control of the solenoid valves.

Claims (11)

1. Arbeitszylinder mit einem Arbeitskolben, der eine Arbeitskammer von einer Atmungskammer trennt, mit einer die Atmungskammer durchdringenden, zur Betätigung eines Gerätes bestimmten Kolbenstange sowie mit einem Sensor zur Erfassung der Kolbenstangenstellung, dadurch gekennzeichnet, daß die Kolbenstange (7) in an sich bekannter Weise auch durch die Arbeitskammer (11) hindurchgeführt ist, daß ferner die Kolbenstange (7) mit einem Axialkanal (13') versehen ist und eine durch eine die Arbeitskammer (11) begrenzende Trennwand hindurchgeführte Außenluftverbindung der Atmungskammer (12) darstellt und daß der Sensor (13, 16, 17, 18) in der hohlen Kolbenstange angeordnet ist.1. Working cylinder with a working piston that separates a working chamber from a breathing chamber, with a piston rod penetrating the breathing chamber, intended for actuating a device, and with a sensor for detecting the piston rod position, characterized in that the piston rod (7) in a manner known per se is also passed through the working chamber (11), that the piston rod (7) is also provided with an axial channel (13 ') and represents an external air connection of the breathing chamber (12) through a partition delimiting the working chamber (11) and that the sensor ( 13, 16, 17, 18) is arranged in the hollow piston rod. 2. Arbeitszylinder nach Anspruch 1, dadurch gekennzeichnet, daß der Sensor (13, 16, 17, 18) im Bereich der Arbeitskammer-Durchführung der Kolbenstange (7) angeordnet ist und als hohlzylindrischer Sensor ausgebildet ist.2. Working cylinder according to claim 1, characterized in that the sensor (13, 16, 17, 18) is arranged in the region of the working chamber passage of the piston rod (7) and is designed as a hollow cylindrical sensor. 3. Arbeitszylinder nach Anspruch 2, dadurch gekennzeichnet, daß ein Tauchkörper (13) des hohlzylindrischen Sensors (13, 16, 17, 18) an seinem einen Ende von einem Radialkanal (30) begrenzt ist, der in die Atmungskammer (12) mündet, und daß der Tauchkörper (13) auf seiner anderen Seite einen Axialdurchgang (31) zu einer Außenluftverbindung hat.3. Working cylinder according to claim 2, characterized in that an immersion body (13) of the hollow cylindrical sensor (13, 16, 17, 18) is delimited at one end by a radial channel (30) which opens into the breathing chamber (12), and that the immersion body (13) has on its other side an axial passage (31) to an outside air connection. 4. Arbeitszylinder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Sensor (13, 16, 17, 18) als Rohrsensor ausgebildet ist und einen hohlzylindrischen Tauchkörper (13) aus Alu-Material, einen diesen umgebenden ebenfalls hohlzylindrischen Spulenkörper (16) mit Spule (17) und eine diese umgebende, ebenfalls hohlzylindrische Abschirmhülse (18) aufweist.4. Working cylinder according to one of claims 1 to 3, characterized in that the sensor (13, 16, 17, 18) is designed as a tube sensor and a hollow-cylindrical immersion body (13) made of aluminum material, a likewise hollow-cylindrical bobbin (16 ) with coil (17) and a surrounding, also hollow cylindrical shielding sleeve (18). 5. Arbeitszylinder nach Anspruch 4, dadurch gekennzeichnet daß der Tauchkörper (13) am Arbeitskolben (10) befestigt ist.5. Working cylinder according to claim 4, characterized in that the immersion body (13) on the working piston (10) is attached. 6. Arbeitszylinder nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß der Spulenkörper (16) mit der Spule (17) und die Abschirmhülse (18) an der Trennwand (19) gelagert sind.6. Working cylinder according to claim 4 or 5, characterized in that the coil body (16) with the coil (17) and the shielding sleeve (18) are mounted on the partition (19). 7. Arbeitszylinder nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Trennwand (19) ein Belüftungs- und ein Entlüftungs-Magnetventil (27, 28) in parallelachsiger Anordnung trägt.7. Working cylinder according to one of claims 1 to 6, characterized in that the partition (19) carries a ventilation and a ventilation solenoid valve (27, 28) in a parallel-axis arrangement. 8. Arbeitszylinder nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß auf der der Arbeitskammer (11) gegenüberliegenden Seite der Trennwand (19) eine druckentlastete Steuergeräte-Kammer (22) vorgesehen ist.8. Working cylinder according to one of claims 1 to 7, characterized in that a pressure-relieved control unit chamber (22) is provided on the side of the partition (19) opposite the working chamber (11). 9. Arbeitszylinder nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Steuergeräte-Kammer (22) und die durch den Sensor (13, 16, 17, 18) geführte AußenluftVerbindung an eine Außenluftstelle (29) angeschlossen sind.9. Working cylinder according to one of claims 1 to 7, characterized in that the control unit chamber (22) and the outside air connection guided by the sensor (13, 16, 17, 18) are connected to an outside air point (29). 10. Arbeitszylinder nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Atemluft für die Atmungskammer (12) über den hohlen Sensor (13, 16, 17, 18) von der Arbeitskammer (11) herangeführt und zu dieser hingeführt ist.10. Working cylinder according to one of claims 1 to 7, characterized in that the breathing air for the breathing chamber (12) via the hollow sensor (13, 16, 17, 18) from the working chamber (11) is brought up to this. 11. Arbeitszylinder nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Arbeitszylinder (1) als Kupplungssteller zur Betätigung einer Kupplung für Fahrzeug-Motoren verwendet ist und daß die die jeweilige Stellung des Arbeitskolbens (10), sowie seine Wegstrecke und seine Geschwindigkeit ergebenden Signale des Sensors (13, 16, 17, 18) in einer elektronischen Schalteinrichtung für die Kupplung auswertbar sind.11. Working cylinder according to one of claims 1 to 10, characterized in that the working cylinder (1) is used as a clutch actuator for actuating a clutch for vehicle engines and that the respective position of the working piston (10), as well as its distance and its speed resulting signals of the sensor (13, 16, 17, 18) can be evaluated in an electronic switching device for the clutch.
EP91107995A 1990-06-27 1991-05-17 Power cylinder Expired - Lifetime EP0463349B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4020368A DE4020368A1 (en) 1990-06-27 1990-06-27 WORK CYLINDER
DE4020368 1990-06-27

Publications (2)

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EP0463349A1 true EP0463349A1 (en) 1992-01-02
EP0463349B1 EP0463349B1 (en) 1993-04-28

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EP91107995A Expired - Lifetime EP0463349B1 (en) 1990-06-27 1991-05-17 Power cylinder

Country Status (5)

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US (1) US5123330A (en)
EP (1) EP0463349B1 (en)
JP (1) JP3160008B2 (en)
DE (2) DE4020368A1 (en)
HU (1) HU206536B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5224410A (en) * 1989-12-02 1993-07-06 Graichen Kai Michael Power booster with vacuum supply passage in position sensor housing
DE4202422A1 (en) * 1992-01-29 1993-08-05 Bosch Gmbh Robert WORKING CYLINDER WITH A WORKING PISTON
DE4405914B4 (en) * 1994-02-24 2012-03-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Pneumatic cylinder for actuating a clutch
US6874405B2 (en) * 2003-01-14 2005-04-05 Haldex Brake Corporation Breather filter for sealed spring brake actuators
ITAR20030013U1 (en) * 2003-06-12 2003-09-10 Faist Componenti S P A PNEUMATIC ACTUATOR WITH ELECTRIC POSITION DETECTOR
US20080000733A1 (en) * 2006-06-14 2008-01-03 Ehrlich Rodney P Spring brake internal venting
CN102352896B (en) * 2011-09-21 2013-03-27 东风汽车有限公司 Clutch actuating mechanism of mechanical automatic transmission
CN103671618A (en) * 2012-09-21 2014-03-26 贵州红林机械有限公司 Clutch actuator assembly for vehicle automatic transmission
CN102889321A (en) * 2012-10-09 2013-01-23 索特传动设备有限公司 Clutch actuating mechanism and vehicle
US20150078926A1 (en) * 2013-09-17 2015-03-19 David A. Krug Regenerative hydraulic lift system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116333A1 (en) * 1981-04-24 1982-11-18 H. Kuhnke Gmbh Kg, 2427 Malente Measuring system for contactlessly detecting positions of the piston rod of a piston/cylinder unit
FR2596819A1 (en) * 1986-04-08 1987-10-09 Samson Ag PNEUMATIC DRIVE DEVICE FOR ADJUSTING APPARATUS OR THE LIKE
DE3614300A1 (en) * 1986-04-26 1987-10-29 Bochumer Eisen Heintzmann Displacement transducer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742916A (en) * 1952-07-31 1956-04-24 Honeywell Regulator Co Measuring and controlling apparatus
AT312319B (en) * 1967-12-30 1973-12-27 Joseph Anton Bachmann Device for travel measurement in a piston-cylinder unit of machine tools or the like.
US3659499A (en) * 1968-12-04 1972-05-02 Ford Motor Co Vacuum motor adapted for use in a vehicle speed control mechanism
SE355516B (en) * 1970-12-28 1973-04-30 Kaufeldt Ingenjors Ab R
FR2220699B1 (en) * 1973-03-09 1978-03-10 Commissariat Energie Atomique
DE2430394C3 (en) * 1974-06-25 1978-08-31 Knorr-Bremse Gmbh, 8000 Muenchen Device for venting the secondary chamber of a brake cylinder, which accommodates a return spring or a storage spring
US4259895A (en) * 1979-06-11 1981-04-07 Owens Roland G Vacuum motor
JPS6213204U (en) * 1985-07-10 1987-01-27
DE3734547A1 (en) * 1987-10-13 1989-05-03 Festo Kg PISTON CYLINDER AGGREGATE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116333A1 (en) * 1981-04-24 1982-11-18 H. Kuhnke Gmbh Kg, 2427 Malente Measuring system for contactlessly detecting positions of the piston rod of a piston/cylinder unit
FR2596819A1 (en) * 1986-04-08 1987-10-09 Samson Ag PNEUMATIC DRIVE DEVICE FOR ADJUSTING APPARATUS OR THE LIKE
DE3614300A1 (en) * 1986-04-26 1987-10-29 Bochumer Eisen Heintzmann Displacement transducer

Also Published As

Publication number Publication date
US5123330A (en) 1992-06-23
EP0463349B1 (en) 1993-04-28
HUT59469A (en) 1992-05-28
DE59100096D1 (en) 1993-06-03
JPH04231707A (en) 1992-08-20
JP3160008B2 (en) 2001-04-23
HU912142D0 (en) 1991-12-30
HU206536B (en) 1992-11-30
DE4020368A1 (en) 1992-01-02

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