EP0484685A1 - Actuator - Google Patents

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Publication number
EP0484685A1
EP0484685A1 EP91117187A EP91117187A EP0484685A1 EP 0484685 A1 EP0484685 A1 EP 0484685A1 EP 91117187 A EP91117187 A EP 91117187A EP 91117187 A EP91117187 A EP 91117187A EP 0484685 A1 EP0484685 A1 EP 0484685A1
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EP
European Patent Office
Prior art keywords
switch
holder
cylinder
housing
holding part
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
EP91117187A
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German (de)
French (fr)
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EP0484685B1 (en
Inventor
Guenter Mayer
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0484685A1 publication Critical patent/EP0484685A1/en
Application granted granted Critical
Publication of EP0484685B1 publication Critical patent/EP0484685B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means

Definitions

  • the invention relates to a cylinder according to the preamble of the main claim. It is known from US Pat. No. 3,639,868 to arrange an additional guide rail on the outer wall of the cylinder housing parallel to the axis of the cylinder. An extension of a holding part for an actuation switch of the cylinder engages in this guide rail.
  • This holding device also has an arm which extends up to close to the outer wall of the cylinder housing. At the end of this arm a hole is formed in which a reed switch is used as an actuation switch.
  • This type of attachment has the disadvantage that the housing of the reed switch must be precisely matched to the bore of the arm. The reed switch can only be used for this special solution. It cannot be used for any other cylinder, especially for other types of cylinders such as short-stroke cylinders, small cylinders or tie rod cylinders.
  • the cylinder according to the invention with the characterizing features of the main claim has the advantage that a relatively small cylinder switch can be used for almost all types of cylinders. Only the relatively cheap and easy to manufacture bracket can be adapted to the specific circumstances of the cylinder types.
  • a cylinder housing which is square or rectangular in cross section is usually used, so that the switch and switch provided in the axial direction one behind the other can be used to fasten the switch as optimally as possible in the region of the piston of the cylinder. If possible, the switch should only have the width of the groove, so that it can be guided in the groove and this is also an adjustment of the switch relative to the holder.
  • the measures listed in the subclaims allow advantageous developments of the cylinder specified in the main claim.
  • FIG. 1 shows a longitudinal section through a working cylinder and the holder
  • FIG. 2 shows a side view of the switch and the holder
  • FIG. 2a shows a front view of the switch
  • FIG. 3 shows a modification of the holder
  • FIG. 4 shows a side view of the switch and the holder according to FIG. 3.
  • 10 denotes the housing of a working cylinder 11, in the cylinder bore 12 of which a piston (not shown) is guided.
  • the housing 10 has a square or rectangular cross section.
  • bores 14 are formed in the direction of the cylinder bore 12 for receiving fastening means in order to be able to attach the housing 10 to a device, for example.
  • a longitudinal groove 15 serving as a type of guide rail is formed, which has an approximately dovetail-like design in cross section.
  • the longitudinal grooves 15 are arranged as centrally as possible in the region of the longitudinal axis of the cylinder bore 12.
  • a holding part 16 is inserted into one of the longitudinal grooves 15 and has a dovetail-like foot 17 corresponding to the shape of the longitudinal groove. Furthermore, there are two bores 18 running in the holding part 16 in the direction of the longitudinal groove 15.
  • the holding part 16 also has an extension 20 which is formed transversely to the bores 18 and has a bore 21 running towards the housing 10. In the bore 21 there is a screw 22 with which the holding part 16 can be fixed to the housing 10.
  • a switch 24 is also arranged in the longitudinal groove 15 and is used to determine the position of the piston of the cylinder 11. All types, such as reed switches or Hall elements, can be used as switches 24.
  • the width of the switch 24 should correspond to the width of the opening of the longitudinal groove 15 in order to allow adjustment of the switch 24 in the longitudinal groove 15.
  • a short pin 25 is formed which projects into one of the bores 18. This pin 25 is only present to enable any use of the switch 24 even in housings without longitudinal grooves.
  • a blind bore 26 with a cut thread is formed in the end face of the switch 24.
  • the holding part 16 is inserted with the foot 17 into one of the longitudinal grooves 15 and fixed with the screw 22 in the region of the point where the position of the piston is to be determined with the help of the switch 24.
  • the switch 24 is inserted into the longitudinal groove 15 so that the pin 25 protrudes into one of the bores 18.
  • a screw 27 which projects into the other bore 18 of the holding part 16 and into the blind hole 26 of the switch 24
  • the switch 24 is fastened to the holding part 16 and thus indirectly to the housing 10.
  • the holding part 16a has a slot 30 intersecting the bores 18.
  • the slot 30 is spread when the screw 31 is screwed in, so that the dovetail-like extensions of the foot 17a tilt in the longitudinal groove 15.
  • a groove 32 is formed in the underside of the foot.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

At least one longitudinal groove (15) is formed in the outer wall of the housing (10) of a short-stroke actuator (11). A switch (24) for determining the position of the piston of the actuator (11) is inserted into the longitudinal groove (15). In order to permit the use of the switch (24) in any other type of actuator, there is a separate holding part (16) for the switch (24). The holding part (16) has a dovetail-like base (17) with which it is inserted into the longitudinal groove (15). Furthermore, the holding part (16) is fixed to the housing by means of a screw (22) projecting through an extension (20). The switch (24) is fastened to the holding part (16) by means of bores (18) running in the direction of the longitudinal grooves. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Arbeitszylinder nach der Gattung des Hauptanspruchs. Aus der US-PS 3 639 868 ist es bekannt, parallel zur Achse des Zylinders eine zusätzliche Führungsschiene an der Außenwand des Zylindergehäuses anzuordnen. In diese Führungsschiene greift ein Fortsatz eines Halteteils für einen Betätigungsschalter des Zylinders ein. Diese Haltevorrichtung weist ferner einen Arm auf, der bis dicht an die Außenwand des Zylindergehäuses heranragt. Am Ende dieses Arms ist eine Bohrung ausgebildet, in die ein Reed-Schalter als Betätigungsschalter eingesetzt ist. Diese Befestigungsart hat aber den Nachteil, daß das Gehäuse des Reed-Schalters genau auf die Bohrung des Arms abgestimmt sein muß. Der Reed-Schalter ist nur für diese eine spezielle Lösung verwendbar. Er kann nicht für beliebige andere Zylinder, insbesondere die anderer Zylinderarten wie Kurzhubzylinder, Kleinzylinder oder Zugankerzylinder verwendet werden.The invention relates to a cylinder according to the preamble of the main claim. It is known from US Pat. No. 3,639,868 to arrange an additional guide rail on the outer wall of the cylinder housing parallel to the axis of the cylinder. An extension of a holding part for an actuation switch of the cylinder engages in this guide rail. This holding device also has an arm which extends up to close to the outer wall of the cylinder housing. At the end of this arm a hole is formed in which a reed switch is used as an actuation switch. This type of attachment has the disadvantage that the housing of the reed switch must be precisely matched to the bore of the arm. The reed switch can only be used for this special solution. It cannot be used for any other cylinder, especially for other types of cylinders such as short-stroke cylinders, small cylinders or tie rod cylinders.

Ferner sind auch Befestigungssysteme bekannt, bei denen der Betätigungsschalter mit Hilfe eines Spannbandes oder mit einer Klemmhalterung an der Zylinderaußenwand befestigt wird. Aber auch hier ist aufgrund der Befestigungsart Halterung/Schalter jeweils eine individuelle Abstimmung zwischen der Halterung und dem Schalter notwendig. Die Schalter sind auch hier jeweils nur für einen speziellen Typ verwendbar.Fastening systems are also known in which the actuation switch is fastened to the outer wall of the cylinder with the aid of a tensioning strap or with a clamping bracket. But here too Due to the type of mounting bracket / switch, an individual coordination between the bracket and the switch is necessary. The switches can only be used for one specific type.

Bei Kurzhubzylindern befindet sich hingegen üblicherweise an mindestens einer Außenwand eine in Längsrichtung des Zylinders ausgebildete Nut, die als Führungsschiene für den Betätigungsschalter dient. Zur Befestigung in dieser Führungsschiene weisen die Betätigungsschalter schwalbenschwanzartige Fortstätze auf, mit denen sie in der Führungsnut geführt werden. Mit einer Fixierschraube werden die Schalter befestigt. Diese Lösung hat aber den Nachteil, daß durch die Fortsätze die Schalter relativ groß bauen. Ferner sind sie wiederum nur für spezielle Zylindertypen verwendbar. Dies bedeutet eine relativ große Lagerhaltung von verschiedenen, nur für einzelne Zylinder verwendbare Schalter.In the case of short-stroke cylinders, on the other hand, there is usually a groove in the longitudinal direction of the cylinder, which is used as a guide rail for the actuation switch, on at least one outer wall. For fastening in this guide rail, the actuation switches have dovetail-like extensions with which they are guided in the guide groove. The switches are attached with a fixing screw. However, this solution has the disadvantage that the switches build relatively large by the extensions. Furthermore, they can only be used for special cylinder types. This means a relatively large inventory of different switches that can only be used for individual cylinders.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Zylinder mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß ein relativ klein bauender Zylinderschalter für nahezu alle Zylindertypen verwendet werden kann. Nur die relativ billige und einfach herstellbare Halterung ist an die jeweiligen speziellen Gegebenheiten der Zylinderarten anzupassen. Bei Kurzhubzylindern wird gewöhnlich ein im Querschnitt quadratisches oder rechteckiges Zylindergehäuse verwendet, so daß durch die in Achsrichtung hintereinander vorgesehene Anordnung der Halterung und des Schalters der Schalter möglichst optimal im Bereich des Kolbens des Zylinders befestigt werden kann. Der Schalter sollte möglichst nur die Breite der Nut aufweisen, so daß er in der Nut geführt werden kann und dies zugleich eine Justierung des Schalters gegenüber der Halterung ist. Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen des im Hauptanspruch angegebenen Zylinders möglich.The cylinder according to the invention with the characterizing features of the main claim has the advantage that a relatively small cylinder switch can be used for almost all types of cylinders. Only the relatively cheap and easy to manufacture bracket can be adapted to the specific circumstances of the cylinder types. In the case of short-stroke cylinders, a cylinder housing which is square or rectangular in cross section is usually used, so that the switch and switch provided in the axial direction one behind the other can be used to fasten the switch as optimally as possible in the region of the piston of the cylinder. If possible, the switch should only have the width of the groove, so that it can be guided in the groove and this is also an adjustment of the switch relative to the holder. The measures listed in the subclaims allow advantageous developments of the cylinder specified in the main claim.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die Figur 1 zeigt einen Längsschnitt durch einen Arbeitszylinder und der Halterung, Figur 2 eine Seitenansicht des Schalters und des Halters, Figur 2a eine Vorderansicht des Schalters, Figur 3 eine Abwandlung der Halterung und Figur 4 eine Seitenansicht des Schalters und der Halterung nach Figur 3.Embodiments of the invention are shown in the drawing and explained in more detail in the following description. 1 shows a longitudinal section through a working cylinder and the holder, FIG. 2 shows a side view of the switch and the holder, FIG. 2a shows a front view of the switch, FIG. 3 shows a modification of the holder, and FIG. 4 shows a side view of the switch and the holder according to FIG. 3.

Beschreibung des AusführungsbeispielsDescription of the embodiment

In der Figur 1 ist mit 10 das Gehäuse eines Arbeitszylinders 11 bezeichnet, in dessen Zylinderbohrung 12 ein nicht dargestellter Kolben geführt wird. Bei dem in den Figuren dargestellten Kurzhubzylinder hat das Gehäuse 10 einen quadratischen oder rechteckigen Querschnitt. Im Bereich einer Außenwand sind in Richtung der Zylinderbohrung 12 verlaufende Bohrungen 14 zur Aufnahme von Befestigungsmitteln ausgebildet, um das Gehäuse 10 zum Beispiel an einem Gerät befestigen zu können. In den anderen Außenwandungen des Gehäuses 10 ist jeweils eine als eine Art Führungsschiene dienende Längsnut 15 ausgebildet, die im Querschnitt eine etwa schwalbenschwanzartige Ausbildung hat. Die Längsnuten 15 sind möglichst zentral im Bereich der Längsachse der Zylinderbohrung 12 angeordnet. In eine der Längsnuten 15 ist ein Halteteil 16 eingesetzt, das einen zur Form der Längsnut korrespondierenden schwalbenschwanzartigen Fuß 17 aufweist. Ferner befinden sich im Halteteil 16 zwei in Richtung der Längsnut 15 verlaufende Bohrungen 18. Das Halteteil 16 hat ferner einen quer zu den Bohrungen 18 ausgebildeten Fortsatz 20, der eine zum Gehäuse 10 hin verlaufende Bohrung 21 aufweist. In der Bohrung 21 befindet sich eine Schraube 22, mit der das Halteteil 16 am Gehäuse 10 fixiert werden kann.In FIG. 1, 10 denotes the housing of a working cylinder 11, in the cylinder bore 12 of which a piston (not shown) is guided. In the short-stroke cylinder shown in the figures, the housing 10 has a square or rectangular cross section. In the area of an outer wall, bores 14 are formed in the direction of the cylinder bore 12 for receiving fastening means in order to be able to attach the housing 10 to a device, for example. In the other outer walls of the housing 10, a longitudinal groove 15 serving as a type of guide rail is formed, which has an approximately dovetail-like design in cross section. The longitudinal grooves 15 are arranged as centrally as possible in the region of the longitudinal axis of the cylinder bore 12. A holding part 16 is inserted into one of the longitudinal grooves 15 and has a dovetail-like foot 17 corresponding to the shape of the longitudinal groove. Furthermore, there are two bores 18 running in the holding part 16 in the direction of the longitudinal groove 15. The holding part 16 also has an extension 20 which is formed transversely to the bores 18 and has a bore 21 running towards the housing 10. In the bore 21 there is a screw 22 with which the holding part 16 can be fixed to the housing 10.

In der Längsnut 15 ist ferner ein Schalter 24 angeordnet, der zur Bestimmung der Position des Kolbens des Zylinders 11 dient. Als Schalter 24 können alle Arten, wie zum Beispiel Reed-Schalter oder Hall-Elemente verwendet werden. Die Breite des Schalters 24 sollte der Breite der Öffnung der Längsnut 15 entsprechen, um damit eine Justierung des Schalters 24 in der Längsnut 15 zu ermöglichen. In der dem Halteteil 16 zugewandten Stirnseite des Schalters ist ein kurzer Zapfen 25 ausgebildet der in eine der Bohrungen 18 ragt. Dieser Zapfen 25 ist nur vorhanden, um eine beliebige Verwendung des Schalters 24 auch bei Gehäusen ohne Längsnuten zu ermöglichen. Achsgleich zur anderen Bohrung 18 des Halteteils 16 ist in der Stirnseite des Schalters 24 eine Sacklochbohrung 26 mit eingeschnittenem Gewinde ausgebildet.A switch 24 is also arranged in the longitudinal groove 15 and is used to determine the position of the piston of the cylinder 11. All types, such as reed switches or Hall elements, can be used as switches 24. The width of the switch 24 should correspond to the width of the opening of the longitudinal groove 15 in order to allow adjustment of the switch 24 in the longitudinal groove 15. In the end face of the switch facing the holding part 16, a short pin 25 is formed which projects into one of the bores 18. This pin 25 is only present to enable any use of the switch 24 even in housings without longitudinal grooves. Aligned with the other bore 18 of the holding part 16, a blind bore 26 with a cut thread is formed in the end face of the switch 24.

Bei der Montage wird das Halteteil 16 mit dem Fuß 17 in eine der Längsnuten 15 eingesetzt und mit Hilfe der Schraube 22 im Bereich der Stelle fixiert, wo mit Hilfe des Schalters 24 die Position des Kolbens bestimmt werden soll. Anschließend wird der Schalter 24 in die Längsnut 15 eingesetzt, so daß der Zapfen 25 in eine der Bohrungen 18 ragt. Mit Hilfe einer Schraube 27, die in die andere Bohrung 18 des Halteteils 16 und in die Sacklochbohrung 26 des Schalters 24 ragt, wird der Schalter 24 am Halteteil 16 und somit mittelbar am Gehäuse 10 befestigt. Es ist aber auch möglich die Reihenfolge der Montageschritte abzuändern.During assembly, the holding part 16 is inserted with the foot 17 into one of the longitudinal grooves 15 and fixed with the screw 22 in the region of the point where the position of the piston is to be determined with the help of the switch 24. Subsequently, the switch 24 is inserted into the longitudinal groove 15 so that the pin 25 protrudes into one of the bores 18. With the help of a screw 27 which projects into the other bore 18 of the holding part 16 and into the blind hole 26 of the switch 24, the switch 24 is fastened to the holding part 16 and thus indirectly to the housing 10. However, it is also possible to change the order of the assembly steps.

Im Ausführungsbeispiel nach den Figuren 3 und 4 ist eine Abwandlung der Befestigungsart des Halteteils am Gehäuse dargestellt. Das Halteteil 16a weist hierzu einen die Bohrungen 18 schneidenden Schlitz 30 auf. Mit Hilfe einer quer zu diesem Schlitz 30 in einer Bohrung angeordneten Schraube 31 wird der Schlitz 30 beim Einschrauben der Schraube 31 gespreizt, so daß sich die schwalbenschwanzartigen Fortsätze des Fußes 17a in der Längsnut 15 verkanten. Um eine Beweglichkeit und somit ein leichtes Eingreifen der Fortsätze des Fußes 17a zu ermöglichen, ist in der Unterseite des Fußes eine Nut 32 ausgebildet.In the exemplary embodiment according to FIGS. 3 and 4, a modification of the type of fastening of the holding part to the housing is shown. For this purpose, the holding part 16a has a slot 30 intersecting the bores 18. With the aid of a screw 31 arranged transversely to this slot 30 in a bore, the slot 30 is spread when the screw 31 is screwed in, so that the dovetail-like extensions of the foot 17a tilt in the longitudinal groove 15. In order to allow mobility and thus easy engagement of the extensions of the foot 17a, a groove 32 is formed in the underside of the foot.

Claims (7)

Arbeitszylinder (11), insbesondere für pneumatische oder hydraulische Betätigung, dessen Gehäuse (10) an mindestens einer Außenwand eine in Längsrichtung des Gehäuses (10) verlaufende Führungsschiene (15) aufweist, in der ein Betätigungsschalter (24) für die Position des Kolbens des Zylinders (11) angeordnet ist, dadurch gekennzeichnet, daß eine separate Halterung (16) in die Führungsschiene (15) eingreift, und daß die Halterung (16) mindestens eine in axialer Richtung der Führungsschiene (15) angeordnete Befestigungsvorrichtung aufweist, mit der der Schalter (24) an der Halterung (16) befestigt ist, so daß Schalter (24) und Halterung (16) in axialer Richtung hintereinander angeordnet sind.Working cylinder (11), in particular for pneumatic or hydraulic actuation, the housing (10) of which has on at least one outer wall a guide rail (15) running in the longitudinal direction of the housing (10), in which an actuating switch (24) for the position of the piston of the cylinder (11), characterized in that a separate holder (16) engages in the guide rail (15), and in that the holder (16) has at least one fastening device arranged in the axial direction of the guide rail (15) with which the switch ( 24) is fastened to the holder (16), so that switches (24) and holder (16) are arranged one behind the other in the axial direction. Zylinder nach Anspruch 1, dadurch gekennzeichnet, daß die Führungsschiene eine im Gehäuse (10) ausgebildete Längsnut (15) ist und der Schalter (24) in dieser Nut (15) angeordnet ist.Cylinder according to claim 1, characterized in that the guide rail is a longitudinal groove (15) formed in the housing (10) and the switch (24) is arranged in this groove (15). Zylinder nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß die Befestigungsvorrichtung aus in axialer Richtung der Führungsschiene (15) in der Halterung (16) ausgebildeten Bohrungen (18) besteht, und daß durch mindestens eine Bohrung (18) eine Schraube (22) zur Befestigung des Schalters (24) ragt.Cylinder according to claim 1 and / or 2, characterized in that the fastening device consists of bores (18) formed in the holder (16) in the axial direction of the guide rail (15), and in that a screw (22 ) for fastening the switch (24) protrudes. Zylinder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Halterung (16) mit Hilfe von schwalbenschwanzartigen Fortsätzen (17) in die Längsnut (15) eingreift.Cylinder according to one of claims 1 to 3, characterized in that the holder (16) engages in the longitudinal groove (15) with the aid of dovetail-like extensions (17). Zylinder nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Halteteil (16) mit Hilfe einer Schraube (27) am Gehäuse (10) fixiert ist.Cylinder according to one of claims 1 to 4, characterized in that the holding part (16) is fixed to the housing (10) with the aid of a screw (27). Zylinder nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Halterung (16) einen die Bohrungen (18) schneidenden Schlitz (30) aufweist, um mit Hilfe einer Schraube (31) die schwalbenschwanzartigen Fortsätze (17) der Halterung (16) in der Längsnut (15) zu verkanten.Cylinder according to one of claims 1 to 5, characterized in that the holder (16) has a slot (30) intersecting the bores (18) in order to use a screw (31) to remove the dovetail-like extensions (17) of the holder (16) to tilt in the longitudinal groove (15). Zylinder nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß eine der Bohrungen (18) der Halterung (16) mit einem Fixierzapfen (25) des Schalters (24) in Wirkverbindung steht.Cylinder according to one of claims 1 to 6, characterized in that one of the bores (18) of the holder (16) is operatively connected to a fixing pin (25) of the switch (24).
EP91117187A 1990-11-09 1991-10-09 Actuator Expired - Lifetime EP0484685B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4035627 1990-11-09
DE4035627A DE4035627A1 (en) 1990-11-09 1990-11-09 WORK CYLINDER

Publications (2)

Publication Number Publication Date
EP0484685A1 true EP0484685A1 (en) 1992-05-13
EP0484685B1 EP0484685B1 (en) 1995-06-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870932A1 (en) * 1997-04-08 1998-10-14 Hygrama Ag Pneumatic or hydraulic cylinder
EP0846874A3 (en) * 1996-11-25 2000-01-12 Robert Bosch Gmbh Cylinder switch

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207971A1 (en) * 1992-03-13 1993-09-16 Numatics Gmbh CONTROL CYLINDER FOR PNEUMATIC CONTROL UNITS WITH SIGNAL CONTACTS
DE4234332A1 (en) * 1992-10-12 1994-04-14 Heidelberger Druckmasch Ag Clamping device for attaching a flexible printing form to the outer surface of a cylinder
DE4241189A1 (en) * 1992-12-03 1994-06-09 Mannesmann Ag Pressure operated drive cylinder position determination appts. - has position measurement devices on exterior of cylinder with activating transducer on longitudinally-guided carriage
DE19953186A1 (en) * 1999-11-05 2001-02-01 Bosch Gmbh Robert Cylinder switch for working cylinder fitted radially in working cylinder groove via two flexible metal spring tongues
DE102005004908B4 (en) * 2005-02-02 2011-03-17 Ifm Electronic Gmbh Stop element for axially limiting the position of a sensor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507167A1 (en) * 1985-03-01 1986-09-04 Festo KG, 7300 Esslingen Short stroke cylinder actuator - has external sensors to detect piston position responding to permanent magnet
GB2180914A (en) * 1985-09-24 1987-04-08 Festo Kg Piston/cylinder assembly
DE8628149U1 (en) * 1986-10-22 1987-11-05 Festo KG, 7300 Esslingen Piston-cylinder unit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3639868A (en) * 1971-03-17 1972-02-01 Bimba Mfg Co Magnetic switch mounting means for a fluid motor unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507167A1 (en) * 1985-03-01 1986-09-04 Festo KG, 7300 Esslingen Short stroke cylinder actuator - has external sensors to detect piston position responding to permanent magnet
GB2180914A (en) * 1985-09-24 1987-04-08 Festo Kg Piston/cylinder assembly
DE8628149U1 (en) * 1986-10-22 1987-11-05 Festo KG, 7300 Esslingen Piston-cylinder unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0846874A3 (en) * 1996-11-25 2000-01-12 Robert Bosch Gmbh Cylinder switch
EP0870932A1 (en) * 1997-04-08 1998-10-14 Hygrama Ag Pneumatic or hydraulic cylinder

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Publication number Publication date
DE59105856D1 (en) 1995-08-03
DE4035627A1 (en) 1992-05-14
EP0484685B1 (en) 1995-06-28

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