EP3419037B1 - Detektionsvorrichtung - Google Patents

Detektionsvorrichtung Download PDF

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Publication number
EP3419037B1
EP3419037B1 EP17305777.9A EP17305777A EP3419037B1 EP 3419037 B1 EP3419037 B1 EP 3419037B1 EP 17305777 A EP17305777 A EP 17305777A EP 3419037 B1 EP3419037 B1 EP 3419037B1
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EP
European Patent Office
Prior art keywords
contactor
conductors
detection device
level
contact interface
Prior art date
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Application number
EP17305777.9A
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English (en)
French (fr)
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EP3419037A1 (de
Inventor
Francis Bonneville
Laurent Pilot
Bernard Prunier
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Hydraulique PB SA
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Hydraulique PB SA
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Publication date
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Priority to EP17305777.9A priority Critical patent/EP3419037B1/de
Publication of EP3419037A1 publication Critical patent/EP3419037A1/de
Application granted granted Critical
Publication of EP3419037B1 publication Critical patent/EP3419037B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
    • H01H3/161—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid
    • 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
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
    • H01H35/2614—Means for adjustment of "ON" or "OFF" operating pressure by varying the bias on the pressure sensitive element

Definitions

  • the present invention relates to the field of detection devices and more particularly to the field of position detection devices for hydraulic systems.
  • Hydraulic mechanisms conventionally involve a displacement of one part relative to another, actuated by an injection of pressurized fluid. Also, the management of the injection of these fluids into the hydraulic mechanisms is essential to control the movement of the parts set in motion.
  • the hydraulic supply mechanisms are cut off when a moving part reaches a predetermined end-of-travel position.
  • This limit switch is recognized by means of a detection device triggered when the moved part arrives in position. The triggering of the detection device then allows the actuation of an electrical circuit for the operation or stopping of an actuation or hydraulic supply mechanism.
  • the publication JP S59 29803 presents a stroke detection mechanism of a hydraulic cylinder. This mechanism is mounted on an annex structure separate from the cylinder.
  • the present invention aims to overcome these drawbacks by proposing a simple implementation device which, on the one hand, is capable of detecting the position of a moving part in a hydraulic fluid and, d '' on the other hand, is suitable for mounting on a sealed partitioning surface of a mechanism hydraulic, while including a connector, standardized or standardizable, to an electrical circuit, for example actuation.
  • the invention also relates to a jack characterized in that it comprises at least one detection device according to the invention, the device being mounted through or integrated on the cylinder of a jack so that the contact interface is capable of being moved by a surface of a movable part of the jack for the detection of the stroke of this movable part.
  • the detection device as described in this document can be implemented in any hydraulic mechanism fluid or medium not exhibiting electrical conduction qualities or exhibiting sufficiently weak electrical conduction not to impair the operation. of the detection device.
  • the contact of the contactor 7 with the terminals 4a ", 4b" of the conductors 4a, 4b allows an electric current to flow between the connection pins 4a ', 4b' for the transmission of a detection signal at the level of the interface of contact 2 of the device.
  • the conductors 4a, 4b allow, on the one hand, an electrical connection with a circuit at a first medium external to the hydraulic mechanism and, of on the other hand, an electrical connection via their terminals 4a ", 4b" thanks to the action of a contactor 7 at the level of an internal medium comprising the hydraulic fluid.
  • This dual function of the conductors 4a, 4b is possible thanks to their positioning through the sealing system 9.
  • connection pins 4a ', 4b' to an electrical circuit 32 forming a pair, they allow the production of a standardized connection to be connected to an electrical circuit 32 without the need for the presence of a relay.
  • This standardized connection can thus be operated, for example, by a connection of the male-female type at the level of each of the connection pins 4a ', 4b'.
  • the center distance of the connection pins 4a ', 4b' is 5 mm, which allows connection using the standardized M12 connector according to standard NF-EN 61076-2-101 but without being limited to this guy.
  • connection pins 4a ', 4b' pass through a part of the second end 1b 'of the body 1 of the device at the level of respective holes 5.
  • the first 1a and second 1b portions of the body 1 of the device are produced by two parts arranged to be mounted together, for example by inserting a part in an other.
  • This method of construction of the body 1 of the device allows easy assembly and mounting of all of the various components of the detection device of the invention.
  • the first portion 1a of the body 1 of the device is produced in the form of a rectilinear duct inserted by one end into the second portion 1b and into in which the contactor 7 is movably mounted with the contact interface 2, the contact interface 2 being accessible at an orifice 3 of the end 1a of the body 1.
  • the second portion 1b of the body of the device accommodating a sealing system 9 in a housing 15 arranged in the extension of the insertion of the first portion 1a in the second portion 1b of the body, the sealing system 9 being traversed by the conductors 4a, 4b at the level of independent through holes.
  • the housing 15 has a configuration adapted to hold the sealing system 9 there in the event of pressure forces.
  • the second portion 1b of the body of the device comprises a shoulder at one end of the housing 15 which allows the production of at least one orifice 5 for the connection pins 4a ', 4b', while preventing an outlet of the sealing system 9 from its housing 15, regardless of the material of the sealing system 9.
  • first 1a and second 1b, portions of the body 1 of the device do not necessarily relate to structurally different parts. Indeed, according to an alternative construction of the invention, the first portion 1a and the second portion 1b can be constructed in the form of a single structure forming the body 1 of the device.
  • the detection device of the invention operates, under the action of an interaction with a surface of a detected element 30, a rectilinear displacement of the contact interface 2 along the axis of the body 1 of the device.
  • the displacement of the contact interface 2 jointly causes the displacement of the contactor 7 in the body of the device to an end-of-travel position in which the contactor 7 simultaneously interacts with the two terminals 4a ", 4b" of the conductors 4a, 4b to provide an electrical connection between the ends of the conductors 4a, 4b.
  • the contactor 7 is mounted to move in translation along the axis of the body 1 of the device.
  • the contactor 7 is then associated, directly or indirectly, in sliding with the contact interface 2.
  • the contactor 7, mounted movable in translation has a surface oriented towards the terminals 4a ", 4b" of the conductors 4a, 4b which is of convex shape.
  • This convex arrangement of the surface of the contactor 7 allows easy adjustment in the interaction of the surface of the contactor 7 with the terminals 4a ", 4b" of the conductors 4a, 4b.
  • the convex surface thus allows a greater displacement of the contactor 7 in the direction of the terminals 4a ", 4b” without the travel of the contactor 7 being limited by one of the two terminals which would be in a slightly offset position or which would have a greater thickness. compared to each other.
  • the contactor 7 is mounted to be movable in rotation about an axis perpendicular to the axis of the body 1 of the device.
  • the contactor 7 comprises one end fixed to a pivot 7c in contact with a first of the terminals 4a "of the conductors 4a, 4b and a second free end capable of coming into contact against the second terminal 4b "of conductors 4b.
  • the rotation of the contactor 7 around its pivot 7c is a function of the displacement of the contact interface 2, by direct or indirect interaction of the contact interface 2 with the contactor 7.
  • the end-of-travel position of contactor 7 in contact with terminals 4a “, 4b" of conductors 4a, 4b can be defined by a stop of contactor 7 against terminals 4a “, 4b" of conductors. 4a, 4b.
  • the return means 8 which opposes the force of the contact interface 2 on the contactor 7 is preferably positioned between a fixed bearing surface with the terminals 4a “ , 4b “of the conductors 4a, 4b and a movable surface with the contactor 7.
  • This return means 8 thus allows a return to the position of the contactor 7 in the absence of displacement force by the contact interface 2, and therefore a rupture of electrical connection between terminals 4a “, 4b" of conductors 4a, 4b in the absence of detection.
  • the return means 8 is produced by a spring, for example a helical spring mounted in compression and oriented along an axis allowing movement of the contactor 7 and of the contact interface 2 in the body 1 of the device.
  • this return means 8 can be produced by any known structure, element or mechanism capable of fulfilling a similar function.
  • the intermediate part 10a is made of an insulating material.
  • the mechanism 10 for managing the movement of the contactor 7 with the contact interface 2 is thus arranged between the contactor 7 and the contact interface 2, movable in translation along the sliding axis of these two elements 2, 7 .
  • the spacing means 10b is produced by a spring, for example a helical spring mounted in compression and oriented along the axis of movement of the contact interface 2 in the body 1 of the device.
  • this spacing means 10b can be produced by any known structure, element or mechanism capable of fulfilling a similar function.
  • this mechanism 10 for managing the movement of the contactor 7 with the contact interface 2 in the detection device of the invention allows, while the contactor 7 makes contact between the terminals 4a “, 4b" of the conductors. 4a, 4b, at the contact interface 2 to continue its movement under the action of contact with a surface of a detected element 30. Thanks to the difference in stiffness between the spacing means 10b of the mechanism 10 of management and the return means 8, the return means is deformed primarily by the spacer means 10b so that the displacement of the contact interface 2 during an interaction with a detected surface 30 causes a displacement of the contactor 7 towards the terminals 4a ", 4b" of the conductors 4a, 4b.
  • the continued movement of the contact interface 2 causes the deformation of the spacer means 10b as a function of the interaction of the The contact interface 2 with the surface of the detected element 30.
  • the mechanism 10 thus allows an adjustment of the difference in travel length which exists between the travel of the contactor 7 and the travel of the contact interface 2.
  • the mechanism 10 allows adjustment of the displacement of the contact interface 2 as a function of variations in the surface of the detected element 30 without this impacting the movement of the contactor 7 resting against the terminals 4a ", 4b" of the conductors 4a, 4b.
  • the latter is slidably mounted in the first portion 1a of the body 1 of the device, in particular having an intermediate part 10a of which the dimensions are slightly smaller than those of the interior housing 6 of the first portion 1a of the body 1 of the device.
  • the return means 8 in the form of a helical spring, is mounted in part on a portion of the periphery of the intermediate piece 10a concentrically with the axis of displacement of this intermediate part 10a.
  • the contactor 7 being mounted to slide along the axis of the body 1 of the device, the fixing of the contactor 7 on the part which carries it, for example the contact interface 2 or on the intermediate part 10a of the mechanism 10 for managing the displacement of the contactor 7 with the contact interface 2, is operated by a fixing element 7a which allows angular displacement, a deflection or an oscillation of the contactor 7 with respect to the fixing element 7a and to the part which carries this contactor 7, for example a screw.
  • This angular displacement thus allows an optimization of the interaction with the terminals 4a ", 4b" of the conductors 4a, 4b.
  • the angular displacement or oscillation of the contactor 7 relative to its fixing element 7a is managed by an elastic means 7b, for example an O-ring, disposed around the fixing element 7a, between the contactor 7 and the structure on which contactor 7 is mounted.
  • an elastic means 7b for example an O-ring
  • the terminals 4a ", 4b" of the conductors 4a, 4b have the shape of a flat or slightly convex and domed head. This arrangement thus allows easier cooperation with the surface of the contactor 7.
  • the contact interface 2 is produced by a ball of diameter greater than the diameter of the orifice 3 of the first end la 'of the body 1 through which the interaction of the contact interface 2 with a surface of a detected element 30.
  • This ball 2 also has a diameter slightly smaller than the internal dimensions of the interior housing 6 of the first portion of the body 1 of the device. According to an example of construction of the device, during assembly of the device, the ball which forms the contact interface 2 is inserted into the first portion 1a of the body 1 of the device before the latter is inserted into the second portion 1b of the device. body.
  • the contact interface 2 can be produced by any type of shape suited to the surface to be detected 30.
  • the contact interface 2 allows, on the one hand, detection. of the surface of an element approaching along an axis parallel to the axis of the device and of displacement of the contact interface 2 and on the other hand, detection of an element moving along an axis perpendicular to the axis of the device.
  • the convex surface of the portion of the ball which protrudes from the orifice 3 of the first portion la of the body of the device has a slope which allows the contact interface 2 to interact with a moving surface positioned in touching without touching the orifice 3 of the first portion 1a of the body of the device.
  • the first sealing system 9 is mounted in a housing 15 of the second portion 1b of the body 1 separated from the first portion la of the body 1 by a reinforcing means 11 for maintaining the conductors 4a, 4b in position facing a pressure, the reinforcing means 11 being electrically insulating and traversed at the level of through holes 12 by the conductors 4a, 4b including at least one terminal 4a ", 4b" comprises a head of width greater than the width of the through hole 12 of the reinforcement means 11 that the terminal 4a ", 4b" passes through.
  • the reinforcement means 11 comprises a substantially planar structure bearing against the sealing system 9 and arranged so that it increases the surface area support of at least one of the heads of the terminals 4a “, 4b" on the sealing system 9.
  • the two terminals 4a “, 4b" of the conductors 4a, 4b are constructed with heads of widths greater than the respective widths of the through holes 12 of the reinforcement means 11 crossed by these terminals 4a “ , 4b ".
  • the first sealing system 9 is made from an elastic material forming an electrically insulating body inserted by diametrical clamping into its housing 15 of the second portion 1b of the body 1 of the device.
  • the first sealing system 9 has a shape and dimensions that are substantially similar, or even identical, to those of its housing 15 in the second portion 1b of the body 1 of the device. This diametral clamping thus makes it possible to obtain a seal independently of any pressure.
  • the electrically insulating body 9a has a shape and dimensions substantially smaller than those of its housing 15 in the second portion 1b of the body 1 of the device. The thickness of the sealed means 9b is then compressed between the insulating body 9a and the housing 15.
  • This sealing mechanism at the level of the conductors 4a, 4b can be implemented regardless of the sealing mechanism between the sealing system 9 and its housing 15.
  • the first sealing system 9 traversed at the level of through holes 13 by the at least two conductors 4a, 4b comprises a sealed means 9c ', 9c "mounted on the respective periphery of each conductor 4a, 4b and positioned between a conductor 4a, 4b and a portion of the insulating body 9a of the first sealing system 9.
  • the sealing mechanism at the level of the conductors 4a, 4b can be implemented regardless of the sealing mechanism between the sealing system 9 and its housing 15.
  • the detection device comprises a second sealing system 14 mounted at a peripheral surface of the body 1 of the device and capable of interacting with the periphery of an orifice of a wall 31 through which the detection device would be positioned. While the first sealing system 9 prevents an exchange of fluid through the detection device, this second sealing system 14 blocks any exchange of fluid between the device and a sealed surface through which it would be mounted.
  • the second sealing system 14 comprises an elastic structure 14a mounted, at least in part, in a peripheral groove 14b of the body 1 of the device.
  • the invention also relates to a jack 33 characterized in that it comprises at least one detection device according to the invention, the device being mounted through or integrated on the cylinder 31 of a jack 33 so that the interface of contact 2 is capable of being moved by a surface of a movable part 30 of the jack 33 for the detection of the stroke of this movable part.
  • the detection device of the invention is mounted through a housing 34 adapted to the surface of the cylinder 31 and forming an orifice passing through the sealed wall 31 of the jack 33
  • This housing 34 may also have one or more peripheral walls adapted to at least partially surround the periphery of the detection device when the latter is mounted in the housing 34.
  • the detection device of the invention can be held in position in its housing 34 by means of a retaining means 35.
  • This retaining means 35 thus prevents the detection device from coming out. its housing 34 under the effect of the pressure of the fluid in the jack.
  • this retaining means 35 may also at least partially cover the detection device mounted in its housing 34 and interact with one of the side walls of the housing 34, the interaction possibly being of the tapping / threading type.
  • the contact interface 2 detection device is able to be moved by a surface of the piston or of the piston rod or of an element mounted on the piston or the piston rod.
  • the jack 33 comprises at least one detection device positioned for detection of at least one end of the stroke of the piston or of the piston rod or of an element mounted on the piston. or the piston rod.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Claims (15)

  1. Erfassungsvorrichtung, die in einen Hydraulikstellzylinder integriert ist, umfassend
    - einen im Wesentlichen geradlinigen Körper (1), der an einem ersten Ende (la') einen ersten Abschnitt (1a) und an einem zweiten Ende (lb') einen zweiten Abschnitt (1b) festlegt,
    - eine Kontaktschnittstelle (2), die in Bezug auf den Körper (1) der Vorrichtung und gemäß der Achse des Körpers der Vorrichtung translatorisch bewegbar ist, wobei die Schnittstelle (2) an dem ersten Abschnitt (1a) des Körpers (1) positioniert und dazu vorgesehen ist, durch eine Öffnung (3), die an dem ersten Ende (la') des Körpers (1) ausgebildet ist, mit einer Fläche eines erfassten Elements wechselzuwirken,
    - zumindest zwei Leiter (4a, 4b), die an dem zweiten Abschnitt (1b) des Körpers (1) angebracht sind, wobei diese Leiter (4a, 4b) einerseits jeweilige erste Enden (4a', 4b') umfassen, die an zumindest einer Öffnung (5) zum Ausbilden von Verbindungsstiften zu einem Stromkreis in Richtung auf das zweite Ende (lb') des Körpers (1) hin ausgerichtet sind, und andererseits jeweilige zweite Enden (4a", 4b"), die Anschlüsse in einem Sitz (6) des ersten Abschnitts (1a) des Körpers (1) der Vorrichtung ausbilden,
    - zumindest ein Schütz (7), das in Bezug auf den Körper (1) der Vorrichtung bewegbar angebracht und unter dem Einwirken einerseits einer Kraft der Kontaktschnittstelle (2) und andererseits einer Kraft zumindest eines Rückstellmittels (8), die der Kraft der Kontaktschnittstelle (2) entgegensteht, bewegt wird, wobei das Schütz (7) dazu geeignet ist, an einem Ende des Hubs die Anschlüsse (4a", 4b") der Leiter (4a, 4b) zu verbinden,
    - zumindest ein erstes Dichtungssystem (9), das an einem Innensitz (15) am zweiten Abschnitt (1b) des Körpers der Vorrichtung angebracht ist, das dazu eingerichtet ist, jeglichen Flüssigkeitsaustausch zwischen einerseits der Umgebung des erfassten Elements am ersten Ende (la') des Körpers (1) der Vorrichtung und andererseits einer zweiten Umgebung am zweiten Ende (lb') des Körpers der Vorrichtung zu vermeiden, wobei dieses erste Dichtungssystem (9) elektrisch isolierend und von den zumindest zwei Leitern (4a, 4b) durchquert ist.
  2. Erfassungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Schütz (7) gemäß der Achse des Körpers (1) der Vorrichtung translatorisch bewegbar angebracht ist.
  3. Erfassungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Schütz (7) um eine Achse, die zur Achse des Körpers (1) der Vorrichtung senkrecht verläuft, rotatorisch bewegbar angebracht ist.
  4. Erfassungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Kontaktschnittstelle (2) und das Schütz (7) bewegungsverbunden in einem Sitz (6) des ersten Abschnitts (1a) des Körpers (1) der Vorrichtung angebracht sind, wobei der Hub des Schützes (7) festgelegt ist zwischen:
    - einer ersten Position des Schützes (7), wenn das Schütz (7) in Kontakt mit den Anschlüssen (4a", 4b") der Leiter (4a, 4b) steht, und
    - einer zweiten Position des Schützes (7), wenn einerseits das Schütz (7) mit zumindest einem der Anschlüsse (4a', 4b') der Leiter (4a, 4b) nicht in Kontakt steht und andererseits die Kontaktschnittstelle (2) sich an ihrer am weitesten vom zweiten Abschnitt (1b) des Körpers der Vorrichtung entfernten Position befindet.
  5. Erfassungsvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Vorrichtung einen Mechanismus (10) zur Führung der Bewegung des Schützes (7) mit der Kontaktschnittstelle (2) umfasst, wobei dieser Mechanismus (10) umfasst:
    - ein Zwischenteil (10a), das einerseits ein erstes Ende umfasst, das in Richtung auf die Anschlüsse (4a", 4b") der Leiter (4a, 4b) hin ausgerichtet ist und mit dem Schütz wechselwirkt, und andererseits ein zweites Ende auf der dem ersten Ende gegenüberliegenden Seite,
    - ein Abstandsmittel (10b), das zwischen der Kontaktschnittstelle (2) und dem zweiten Ende des Zwischenteils (10a) angeordnet ist, wobei die Steifheit des Abstandsmittels (10b) des Bewegungsführungsmechanismus größer als die Steifheit des Rückstellmittels (8) ist.
  6. Erfassungsvorrichtung nach einem der Ansprüche 1, 2, 4 oder 5, dadurch gekennzeichnet, dass das Schütz (7) gemäß der Achse des Körpers (1) der Vorrichtung verschiebbar angebracht ist, wobei die Befestigung des Schützes (7) auf dem diesen tragenden Teil durch ein Befestigungselement (7a) bewirkt wird, das eine Winkelbewegung, einen Ausschlag oder ein Pendeln des Schützes (7) in Bezug auf das Befestigungselement (7a) und das Teil, das dieses Schütz (7) trägt, erlaubt.
  7. Erfassungsvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Kontaktschnittstelle (2) durch eine Kugel mit einem Durchmesser, der größer ist als der Durchmesser der Öffnung (3) des ersten Endes (la') des Körpers (1), durch die hindurch das Wechselwirken der Kontaktschnittstelle (2) mit einer Fläche eines erfassten Elements (30) bewirkt wird, verwirklicht ist.
  8. Erfassungsvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass, im Inneren des Körpers (1) der Vorrichtung, das erste Dichtungssystem (9) in einem Sitz (15) des zweiten Abschnitts (1b) des Körpers (1) getrennt vom ersten Abschnitt (1a) des Körpers (1) durch ein Mittel zur Verstärkung (11) der Positionsbeibehaltung der Leiter (4a, 4b) angesichts eines Druckes angebracht ist, wobei das Mittel zur Verstärkung (11) elektrisch isolierend ist und an Durchgangsbohrungen (12) von den Leitern (4a, 4b) durchquert ist, wobei zumindest ein Anschluss (4a", 4b") zumindest einen Kopf mit einer Breite aufweist, die größer ist als die Breite der Durchgangsbohrung (12) des Verstärkungsmittels (11), die von dem Anschluss (4a", 4b") durchquert ist.
  9. Erfassungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das erste Dichtungssystem (9) aus einem elastischen Werkstoff, der einen elektrisch isolierenden Körper ausbildet und durch diametrales Klemmen in seinen Sitz (15) des zweiten Abschnitts (1b) des Körpers (1) der Vorrichtung eingeführt ist, verwirklicht ist.
  10. Erfassungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das erste Dichtungssystem (9) umfasst:
    - einen elektrisch isolierenden Körper (9a), der in seinem Sitz (15) des zweiten Abschnitts (1b) des Körpers (1) der Vorrichtung positioniert ist und an den Durchgangsbohrungen (13) von den zumindest zwei Leitern (4a, 4b) durchquert ist, und
    - ein Dichtungsmittel (9b), das am Rand des isolierenden Körpers (9a) angebracht und zwischen dem isolierenden Körper (9a) und einer Fläche des Sitzes (15) des zweiten Abschnitts (1b) der Vorrichtung positioniert ist.
  11. Erfassungsvorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der isolierende Körper des ersten Dichtungssystems (9), der an den Durchgangsbohrungen (13) von den zumindest zwei Leitern (4a, 4b) durchquert ist, ein diametrales Klemmen von jedem der Leiter (4a, 4b) bewirkt.
  12. Erfassungsvorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das erste Dichtungssystem (9), das an den Durchgangsbohrungen (13) von den zumindest zwei Leitern (4a, 4b) durchquert ist, ein Dichtungsmittel (9c', 9c") umfasst, das am jeweiligen Rand jedes Leiters (4a, 4b) angebracht und zwischen einem Leiter (4a, 4b) und einem Abschnitt des isolierenden Körpers (9a) des ersten Dichtungssystems (9) positioniert ist.
  13. Erfassungsvorrichtung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Erfassungsvorrichtung ein zweites Dichtungssystem (14) umfasst, das an einer Randfläche des Körpers (1) der Vorrichtung angebracht und dazu geeignet ist, mit dem Umfang einer Öffnung einer Wandung (31) wechselzuwirken, durch die hindurch das Erfassungsgerät positioniert werden würde.
  14. Stellzylinder (33), dadurch gekennzeichnet, dass er zumindest eine Erfassungsvorrichtung nach einem der Ansprüche 1 bis 13 umfasst, wobei die Vorrichtung den Zylinder (31) eines Stellzylinders (33) durchquerend angebracht oder in diesen integriert ist, so dass die Kontaktschnittstelle (2) durch eine Fläche eines bewegbaren Teils (30) des Stellzylinders (33) zur Erfassung des Hubs dieses bewegbaren Teils bewegt werden kann.
  15. Stellzylinder (33) nach Anspruch 14, dadurch gekennzeichnet, dass die Kontaktschnittstelle (2) der Erfassungsvorrichtung dazu geeignet ist, durch eine Kolbenfläche oder durch die Kolbenstange oder durch ein Element, das auf dem Kolben oder der Kolbenstange angebracht ist, bewegt zu werden.
EP17305777.9A 2017-06-22 2017-06-22 Detektionsvorrichtung Active EP3419037B1 (de)

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340371A (en) * 1965-10-23 1967-09-05 Lea G Trimmer Switch device for pressure cylinders
US3661053A (en) * 1970-12-04 1972-05-09 Parker Hannifin Corp Reversing switch actuator for fluid motor
GB1361612A (en) * 1971-08-27 1974-07-30 Smiths Industries Ltd Electrical switches
JPS5929803A (ja) * 1982-08-10 1984-02-17 Iseki & Co Ltd 油圧シリンダ等の伸縮状態検出装置

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