EP3419037B1 - Detection device - Google Patents

Detection device 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
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.)
Active
Application number
EP17305777.9A
Other languages
German (de)
French (fr)
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EP3419037A1 (en
Inventor
Francis Bonneville
Laurent Pilot
Bernard Prunier
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.)
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/en
Publication of EP3419037A1 publication Critical patent/EP3419037A1/en
Application granted granted Critical
Publication of EP3419037B1 publication Critical patent/EP3419037B1/en
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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)

Description

La présente invention se rapporte au domaine des dispositifs de détection et plus particulièrement au domaine des dispositifs de détection de position pour systèmes hydrauliques.The present invention relates to the field of detection devices and more particularly to the field of position detection devices for hydraulic systems.

Les mécanismes hydrauliques font classiquement intervenir un déplacement d'une pièce par rapport à une autre, actionnée par une injection de fluide en pression. Aussi, la gestion de l'injection de ces fluides dans les mécanismes hydrauliques est primordiale pour contrôler le déplacement des pièces mises en mouvement.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.

Selon un mode de fonctionnement habituel de ce contrôle, les mécanismes d'approvisionnement hydrauliques sont coupés lorsqu'une pièce en déplacement atteint une position de fin de course prédéterminée. Cette fin de course est reconnue par l'intermédiaire d'un dispositif de détection déclenché lorsque la pièce déplacée arrive en position. Le déclenchement du dispositif de détection permet alors l'actionnement d'un circuit électrique pour le fonctionnement ou l'arrêt d'un mécanisme d'actionnement ou d'approvisionnement hydraulique. La publication JP S59 29803 présente un mécanisme de détection de course d'un vérin hydraulique. Ce mécanisme est monté sur une structure annexe séparée du vérin.According to a usual mode of operation of this control, 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.

Toutefois, dans le cadre d'une mise en place de dispositif de détection dans un mécanisme hydraulique, il convient de noter que le fluide hydraulique nécessite un cloisonnement imposant une limite de compatibilité avec les connectiques d'un circuit électrique d'actionnement.However, in the context of the installation of a detection device in a hydraulic mechanism, it should be noted that the hydraulic fluid requires partitioning imposing a limit of compatibility with the connections of an electrical actuation circuit.

En effet, pour proposer une alternative aux détecteurs à induction qui sont complexes et onéreux, des dispositifs de détections ont été développés faisant intervenir un contact électrique entre le dispositif de détection et la pièce détectée. Cependant, en faisant intervenir la pièce de détection dans le circuit électrique d'actionnement, ce type de dispositif limite son champs d'application, d'une part, en requérant la présence d'un relais et, d'autre part, en obligeant une connectique électrique non-standardisée à une seule broche.In fact, in order to provide an alternative to induction detectors which are complex and expensive, detection devices have been developed involving an electrical contact between the detection device and the part detected. However, by involving the detection part in the electrical actuation circuit, this type of device limits its fields of application, on the one hand, by requiring the presence of a relay and, on the other hand, by requiring a non-standardized single-pin electrical connection.

Aussi, la présente invention a pour but de pallier ces inconvénients en proposant un dispositif de mise en œuvre simple qui, d'une part, soit apte à opérer une détection de la position d'une pièce en déplacement dans un fluide hydraulique et, d'autre part, soit adapté à un montage sur une surface de cloisonnement étanche d'un mécanisme hydraulique, tout en comportant une connectique, standardisée ou standardisable, à un circuit électrique, par exemple d'actionnement.Also, 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.

L'invention a ainsi pour objet un dispositif de détection intégré à un vérin hydraulique caractérisé en ce qu'il comprend :

  • un corps sensiblement rectiligne définissant une première portion du côté d'une première extrémité et une seconde portion du côté d'une seconde extrémité,
  • une interface de contact mobile en translation par rapport au corps du dispositif et selon l'axe du corps du dispositif, l'interface est positionnée au niveau de la première portion du corps du dispositif et destinée à interagir, au travers d'un orifice formé au niveau de la première extrémité du corps, avec une surface d'un élément détecté,
  • au moins deux conducteurs montés au niveau de la seconde portion du corps du dispositif, ces conducteurs comportant, d'une part, des premières extrémités respectives orientées vers la seconde extrémité du corps du dispositif au niveau d'au moins un orifice pour former des broches de connexion à un circuit électrique et, d'autre part, des secondes extrémités respectives formant des bornes dans un logement de la première portion du corps du dispositif,
  • au moins un contacteur monté mobile par rapport au corps du dispositif, et déplacé sous l'action, d'une part, d'une force de l'interface de contact et, d'autre part, d'une force d'au moins un moyen de rappel qui s'oppose à la force de l'interface de contact, le contacteur étant apte au niveau d'une fin de course à relier les bornes des conducteurs,
  • au moins un premier système d'étanchéité monté au niveau d'un logement intérieur à la seconde portion du corps du dispositif, configuré pour éviter tout échange de fluide entre, d'une part, le milieu de l'élément détecté au niveau de la première extrémité du corps du dispositif et, d'autre part, un second milieu au niveau de la seconde extrémité du corps du dispositif, ce premier système d'étanchéité étant électriquement isolant et traversé par les au moins deux conducteurs.
The subject of the invention is thus a detection device integrated into a hydraulic cylinder characterized in that it comprises:
  • a substantially rectilinear body defining a first portion on the side of a first end and a second portion on the side of a second end,
  • a contact interface movable in translation relative to the body of the device and along the axis of the body of the device, the interface is positioned at the level of the first portion of the body of the device and intended to interact, through an orifice formed at the first end of the body, with a surface of a detected element,
  • at least two conductors mounted at the level of the second portion of the body of the device, these conductors comprising, on the one hand, respective first ends oriented towards the second end of the body of the device at the level of at least one orifice to form pins connection to an electric circuit and, on the other hand, respective second ends forming terminals in a housing of the first portion of the body of the device,
  • at least one contactor mounted movably relative to the body of the device, and moved under the action, on the one hand, of a force from the contact interface and, on the other hand, of a force of at least a return means which opposes the force of the contact interface, the contactor being able at a limit switch to connect the terminals of the conductors,
  • at least a first sealing system mounted at a housing inside the second portion of the body of the device, configured to prevent any exchange of fluid between, on the one hand, the middle of the element detected at the level of the first end of the body of the device and, on the other hand, a second medium at the level of the second end of the body of the device, this first sealing system being electrically insulating and traversed by the at least two conductors.

L'invention se rapporte également à un vérin caractérisé en ce qu'il comprend au moins un dispositif de détection selon l'invention, le dispositif étant monté traversant ou intégré sur le cylindre d'un vérin de sorte que l'interface de contact soit susceptible d'être déplacée par une surface d'une pièce mobile du vérin pour la détection de la course de cette pièce mobile.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.

L'invention sera mieux comprise, grâce à la description ci-après, qui se rapporte à un mode de réalisation préféré, donné à titre d'exemple non limitatif, et expliqué avec référence aux dessins schématiques annexés, dans lesquels :

  • les figures 1 et 2 sont des représentations schématiques d'un premier exemple de dispositif de détection selon l'invention, respectivement au repos et en fonctionnement,
  • la figure 3 est une représentation schématique d'un second exemple de dispositif de détection selon l'invention,
  • la figure 4 est une représentation schématique d'un troisième exemple de dispositif de détection selon l'invention,
  • les figures 5 et 6 sont des représentations schématiques d'un quatrième exemple de dispositif de détection selon l'invention, respectivement au repos et en fonctionnement,
  • la figure 7 est une représentation schématique d'un exemple de dispositif de détection selon l'invention intégré à un vérin hydraulique.
The invention will be better understood, thanks to the description below, which relates to a preferred embodiment, given by way of non-limiting example, and explained with reference to the accompanying schematic drawings, in which:
  • the figures 1 and 2 are schematic representations of a first example of a detection device according to the invention, respectively at rest and in operation,
  • the figure 3 is a schematic representation of a second example of a detection device according to the invention,
  • the figure 4 is a schematic representation of a third example of a detection device according to the invention,
  • the figures 5 and 6 are schematic representations of a fourth example of a detection device according to the invention, respectively at rest and in operation,
  • the figure 7 is a schematic representation of an example of a detection device according to the invention integrated into a hydraulic cylinder.

La présente invention porte sur un dispositif de détection caractérisé en ce qu'il comprend :

  • un corps 1 sensiblement rectiligne définissant une première portion la du côté d'une première extrémité la' et une seconde portion 1b du côté d'une seconde extrémité 1b',
  • une interface de contact 2 mobile en translation par rapport au corps 1 du dispositif et selon l'axe du corps du dispositif, l'interface 2 est positionnée au niveau de la première portion la du corps 1 du dispositif et destinée à interagir, au travers d'un orifice 3 formé au niveau de la première extrémité la' du corps 1, avec une surface d'un élément détecté 30,
  • au moins deux conducteurs 4a, 4b montés au niveau de la seconde portion 1b du corps 1 du dispositif, ces conducteurs 4a, 4b comportant, d'une part, des premières extrémités 4a', 4b' respectives orientées vers la seconde extrémité 1b' du corps 1 du dispositif au niveau d'au moins un orifice 5 pour former des broches de connexion 4a', 4b' à un circuit électrique 32 et, d'autre part, des secondes extrémités 4a", 4b" respectives formant des bornes dans un logement 6 de la première portion la du corps 1 du dispositif,
  • au moins un contacteur 7 monté mobile par rapport au corps 1 du dispositif, et déplacé sous l'action, d'une part, d'une force de l'interface de contact 2 et, d'autre part, d'une force d'au moins un moyen de rappel 8 qui s'oppose à la force de l'interface de contact 2, le contacteur 7 étant apte au niveau d'une fin de course à relier les bornes 4a", 4b" des conducteurs 4a, 4b,
  • au moins un premier système d'étanchéité 9 monté au niveau d'un logement intérieur 15 à la seconde portion 1b du corps du dispositif, pour éviter tout échange de fluide entre, d'une part, le milieu de l'élément détecté 30 au niveau de la première extrémité la' du corps 1 du dispositif et, d'autre part, un second milieu au niveau de la seconde extrémité 1b' du corps du dispositif, ce premier système d'étanchéité 9 étant électriquement isolant et traversé par les au moins deux conducteurs 4a, 4b.
The present invention relates to a detection device characterized in that it comprises:
  • a substantially rectilinear body 1 defining a first portion la on the side of a first end la 'and a second portion 1b on the side of a second end 1b',
  • a contact interface 2 movable in translation relative to the body 1 of the device and along the axis of the body of the device, the interface 2 is positioned at the level of the first portion la of the body 1 of the device and intended to interact, through an orifice 3 formed at the first end la 'of the body 1, with a surface of a detected element 30,
  • at least two conductors 4a, 4b mounted at the level of the second portion 1b of the body 1 of the device, these conductors 4a, 4b comprising, on the one hand, the respective first ends 4a ', 4b' oriented towards the second end 1b 'of the body 1 of the device at at least one orifice 5 to form connection pins 4a ', 4b' to an electrical circuit 32 and, on the other hand, respective second ends 4a ", 4b" forming terminals in a housing 6 of the first portion 1a of the body 1 of the device,
  • at least one contactor 7 mounted movably relative to the body 1 of the device, and moved under the action, on the one hand, of a force from the contact interface 2 and, on the other hand, of a force d 'at least one way to recall 8 which opposes the force of the contact interface 2, the contactor 7 being able at a limit switch to connect the terminals 4a ", 4b" of the conductors 4a, 4b,
  • at least a first sealing system 9 mounted at an interior housing 15 at the second portion 1b of the body of the device, to prevent any exchange of fluid between, on the one hand, the middle of the element detected 30 at the level of the first end 1a 'of the body 1 of the device and, on the other hand, a second medium at the level of the second end 1b' of the body of the device, this first sealing system 9 being electrically insulating and traversed by the at at least two conductors 4a, 4b.

Il convient de comprendre que le dispositif de détection tel que décrit dans le présent document peut être mis en œuvre dans tout fluide de mécanisme hydraulique ou milieu ne présentant pas de qualités de conduction électrique ou présentant une conduction électrique suffisamment faible pour ne pas altérer le fonctionnement du dispositif détection.It should be understood that 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.

Il convient de noter que le choix des matériaux des différents éléments du dispositif de détection de l'invention doit être réalisé de sorte que la structure du dispositif ne permette pas de conduction électrique entre les deux conducteurs 4a, 4b par une autre pièce que le contacteur 7 et autrement que lorsque ce contacteur 7 est en contact avec les bornes 4a", 4b" des conducteurs 4a, 4b.It should be noted that the choice of materials of the various elements of the detection device of the invention must be made so that the structure of the device does not allow electrical conduction between the two conductors 4a, 4b by another part than the contactor. 7 and other than when this contactor 7 is in contact with the terminals 4a ", 4b" of the conductors 4a, 4b.

Le contact du contacteur 7 avec les bornes 4a", 4b" des conducteurs 4a, 4b permet un passage de courant électrique entre les broches de connexion 4a', 4b' pour la transmission d'un signal de détection au niveau de l'interface de contact 2 du dispositif.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.

Il convient également de noter que, dans le dispositif de détection de l'invention, les conducteurs 4a, 4b permettent, d'une part, une connexion électrique avec un circuit au niveau d'un premier milieu extérieur au mécanisme hydraulique et, d'autre part, une liaison électrique par leurs bornes 4a", 4b" grâce à l'action d'un contacteur 7 au niveau d'un milieu intérieur comprenant le fluide hydraulique. Cette double fonction des conducteurs 4a, 4b est possible grâce à leur positionnement au travers du système d'étanchéité 9.It should also be noted that, in the detection device of the invention, 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.

Par ailleurs, les broches de connexion 4a', 4b' à un circuit électrique 32 formant une paire, elles permettent la réalisation d'une connectique standardisée pour être reliée à un circuit électrique 32 sans que soit nécessaire la présence d'un relais. Cette connectique standardisée peut ainsi être opéré, par exemple, par une connexion de type mâle-femelle au niveau de chacune des broches de connexion 4a', 4b'. Selon un exemple de réalisation préféré, l'entraxe des broches de connexion 4a', 4b' est de 5 mm, ce qui permet un raccordement utilisant la connectique standardisée M12 suivant la norme NF-EN 61076-2-101 mais sans se limiter à ce type.Moreover, the 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'. According to a preferred embodiment, 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.

Selon une particularité de construction de l'invention, les broches de connexion 4a', 4b' traversent une partie de la seconde extrémité 1b' du corps 1 du dispositif au niveau d'orifices 5 respectifs.According to a particular construction feature of the invention, the 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.

De façon non-limitative et selon un mode de construction préféré de l'invention, les première la et seconde 1b portions du corps 1 du dispositif sont réalisées par deux pièces arrangées pour être montées ensemble, par exemple par l'insertion d'une pièce dans une autre. Ce mode de construction du corps 1 du dispositif permet un assemblage et un montage facilité de l'ensemble des différents composants du dispositif de détection de l'invention.In a non-limiting manner and according to a preferred embodiment of the invention, 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.

De façon complémentaire et également non-limitative et selon un mode de construction préféré de l'invention, la première portion la du corps 1 du dispositif est réalisé sous la forme d'un conduit rectiligne inséré par une extrémité dans la seconde portion 1b et dans lequel le contacteur 7 est monté mobile avec l'interface de contact 2, l'interface de contact 2 étant accessible au niveau d'un orifice 3 de l'extrémité la du corps 1.In a complementary and also non-limiting manner and according to a preferred embodiment 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.

La seconde portion 1b du corps du dispositif logeant un système d'étanchéité 9 dans un logement 15 disposé dans le prolongement de l'insertion de la première portion la dans la seconde portion 1b du corps, le système d'étanchéité 9 étant traversé par les conducteurs 4a, 4b au niveau de trous traversant indépendants. Selon un mode de construction préféré, le logement 15 présente une configuration adaptée pour y maintenir le système d'étanchéité 9 dans le cas de forces de pression. Ainsi, selon un exemple de réalisation, la seconde portion 1b du corps du dispositif comprend un épaulement à une extrémité du logement 15 qui permet la réalisation d'au moins un orifice 5 pour les broches de connexion 4a', 4b', tout en empêchant une sortie du système d'étanchéité 9 de son logement 15, quelle que soit la matière du système d'étanchéité 9.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. According to a preferred embodiment, the housing 15 has a configuration adapted to hold the sealing system 9 there in the event of pressure forces. Thus, according to an exemplary embodiment, 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.

Il convient cependant de noter que les, première la et seconde 1b, portions du corps 1 du dispositif ne se rapportent pas impérativement à des pièces structurellement différentes. En effet, selon une construction alternative de l'invention, la première portion la et la seconde portion 1b peuvent être construite sous la forme d'une même structure formant le corps 1 du dispositif.It should however be noted that the, 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.

Dans son fonctionnement, le dispositif de détection de l'invention opère, sous l'action d'une interaction avec une surface d'un élément détecté 30, un déplacement rectiligne de l'interface de contact 2 selon l'axe du corps 1 du dispositif. Le déplacement de l'interface de contact 2 entraîne conjointement le déplacement du contacteur 7 dans le corps du dispositif jusqu'à une position de fin de course dans laquelle le contacteur 7 interagit simultanément avec les deux bornes 4a", 4b" des conducteurs 4a, 4b pour assurer une liaison électrique entre les extrémités des conducteurs 4a, 4b.In its operation, 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.

Selon une particularité de construction du dispositif de détection de l'invention, le contacteur 7 est monté mobile en translation selon l'axe du corps 1 du dispositif. Le contacteur 7 est alors associé, directement ou indirectement, en coulissement avec l'interface de contact 2.According to a particular construction feature of the detection device of the invention, 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.

Selon une particularité complémentaire non-limitative de l'invention, le contacteur 7, monté mobile en translation, présente une surface orientée vers les bornes 4a", 4b" des conducteurs 4a, 4b qui soit de forme convexe. Cet arrangement convexe de la surface du contacteur 7 autorise un ajustement facilité dans l'interaction de la surface du contacteur 7 avec les bornes 4a", 4b" des conducteurs 4a, 4b. La surface convexe autorise ainsi un déplacement plus important du contacteur 7 en direction des bornes 4a", 4b" sans que la course du contacteur 7 ne soit limitée par une des deux bornes qui serait dans une position légèrement décalée ou qui présenterait une épaisseur plus importante par rapport à l'autre.According to a complementary, non-limiting feature of the invention, 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.

Selon une particularité alternative de construction du dispositif de détection de l'invention, le contacteur 7 est monté mobile en rotation autour d'un axe perpendiculaire à l'axe du corps 1 du dispositif. Selon un exemple non-limitatif de cette particularité de construction, le contacteur 7 comprend une extrémité fixée à un pivot 7c en contact avec une première des bornes 4a" des conducteurs 4a, 4b et une seconde extrémité libre apte à venir en contact contre la seconde borne 4b" des conducteurs 4b. La rotation du contacteur 7 autour de son pivot 7c est fonction du déplacement de l'interface de contact 2, par interaction directe ou indirecte de l'interface de contact 2 avec le contacteur 7.According to an alternative construction feature of the detection device of the invention, the contactor 7 is mounted to be movable in rotation about an axis perpendicular to the axis of the body 1 of the device. According to a non-limiting example of this particular construction feature, 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.

Selon une autre particularité de construction complémentaire aux différents déplacements du contacteur 7, le dispositif de détection est caractérisé en ce que l'interface de contact 2 et le contacteur 7 sont montés associés en déplacement dans un logement 6 de la première portion la du corps 1 du dispositif, la course du contacteur 7 étant définie entre :

  • une première position du contacteur 7 lorsque le contacteur 7 est en contact avec les bornes 4a", 4b" des conducteurs 4a, 4b, et
  • une seconde position du contacteur 7 lorsque, d'une part, le contacteur 7 est sans contact avec au moins une des bornes 4a', 4b' des conducteurs 4a, 4b et, d'autre part, l'interface de contact 2 est à sa position la plus éloignée de la seconde portion 1b du corps 1 du dispositif.
According to another particular construction feature complementary to the different movements of the contactor 7, the detection device is characterized in that the contact interface 2 and the contactor 7 are mounted associated in displacement in a housing 6 of the first portion 1a of the body 1 of the device, the stroke of the contactor 7 being defined between:
  • a first position of the contactor 7 when the contactor 7 is in contact with the terminals 4a ", 4b" of the conductors 4a, 4b, and
  • a second position of the contactor 7 when, on the one hand, the contactor 7 is without contact with at least one of the terminals 4a ', 4b' of the conductors 4a, 4b and, on the other hand, the contact interface 2 is at its position furthest from the second portion 1b of the body 1 of the device.

Selon une particularité de ce fonctionnement, la position de fin de course du contacteur 7 en contact avec les bornes 4a", 4b" des conducteurs 4a, 4b peut être définie par une butée du contacteur 7 contre les bornes 4a", 4b" des conducteurs 4a, 4b.According to a particular feature of this operation, 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.

Il convient de noter que, de façon non-limitative, le moyen de rappel 8 qui s'oppose à la force de l'interface de contact 2 sur le contacteur 7 est préférentiellement positionné entre une surface d'appui fixe avec les bornes 4a", 4b" des conducteurs 4a, 4b et une surface mobile avec le contacteur 7. Ce moyen de rappel 8 permet ainsi un retour en position du contacteur 7 en absence de force de déplacement par l'interface de contact 2, et donc une rupture de liaison électrique entre les bornes 4a", 4b" des conducteurs 4a, 4b en absence de détection.It should be noted that, in a non-limiting manner, 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.

Selon un mode de construction préféré qui n'est pas limitatif de l'invention, le moyen de rappel 8 est réalisé par un ressort, par exemple un ressort hélicoïdal monté en compression et orienté selon un axe permettant un déplacement du contacteur 7 et de l'interface de contact 2 dans le corps 1 du dispositif. Toutefois, il convient de noter que ce moyen de rappel 8 peut être réalisé par toute structure, élément ou mécanisme connu susceptible de remplir une fonction similaire.According to a preferred embodiment which is not restrictive of the invention, 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. However, it should be noted that this return means 8 can be produced by any known structure, element or mechanism capable of fulfilling a similar function.

Selon une autre particularité complémentaire non-limitative de l'invention, le dispositif de détection est caractérisé en ce que le dispositif comprend un mécanisme 10 de gestion du déplacement du contacteur 7 avec l'interface de contact 2, ce mécanisme 10 comprenant :

  • une pièce intermédiaire 10a comprenant, d'une part, une première extrémité orientée vers les bornes 4a", 4b" des conducteurs 4a, 4b et qui interagit avec le contacteur 7 et, d'autre part, une seconde extrémité du côté opposé à la première extrémité,
  • un moyen d'écartement 10b disposé entre l'interface de contact 2 et la seconde extrémité de la pièce intermédiaire 10a,
la raideur du moyen d'écartement 10b du mécanisme 10 de gestion du déplacement étant supérieure à la raideur du moyen de rappel 8.According to another non-limiting complementary feature of the invention, the detection device is characterized in that the device comprises a mechanism 10 for managing the movement of the contactor 7 with the contact interface 2, this mechanism 10 comprising:
  • an intermediate piece 10a comprising, on the one hand, a first end oriented towards the terminals 4a ", 4b" of the conductors 4a, 4b and which interacts with the contactor 7 and, on the other hand, a second end on the side opposite to the first end,
  • a spacing means 10b arranged between the contact interface 2 and the second end of the intermediate part 10a,
the stiffness of the spacing means 10b of the movement management mechanism 10 being greater than the stiffness of the return means 8.

Selon une particularité de construction non-limitative de l'invention, la pièce intermédiaire 10a est réalisée dans un matériau isolant.According to a non-limiting construction feature of the invention, the intermediate part 10a is made of an insulating material.

Le mécanisme 10 de gestion du déplacement du contacteur 7 avec l'interface de contact 2 est ainsi disposé entre le contacteur 7 est l'interface de contact 2, mobile en translation le long de l'axe de coulissement de ces deux éléments 2, 7.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 .

Selon un mode de construction préféré non-limitatif de l'invention, le moyen d'écartement 10b est réalisé par un ressort, par exemple un ressort hélicoïdal monté en compression et orienté selon l'axe de déplacement de l'interface de contact 2 dans le corps 1 du dispositif. Toutefois, il convient de noter que ce moyen d'écartement 10b peut être réalisé par toute structure, élément ou mécanisme connu susceptible de remplir une fonction similaire.According to a preferred non-limiting embodiment of the invention, 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. However, it should be noted that this spacing means 10b can be produced by any known structure, element or mechanism capable of fulfilling a similar function.

L'intégration de ce mécanisme 10 de gestion du déplacement du contacteur 7 avec l'interface de contact 2 dans le dispositif de détection de l'invention permet, alors que le contacteur 7 opère un contact entre les bornes 4a", 4b" des conducteurs 4a, 4b, à l'interface de contact 2 de poursuivre son déplacement sous l'action d'un contact avec une surface d'un élément détecté 30. Grâce à la différence de raideur entre le moyen d'écartement 10b du mécanisme 10 de gestion et le moyen de rappel 8, le moyen de rappel est déformé prioritairement au moyen d'écartement 10b de sorte que le déplacement de l'interface de contact 2 lors d'une interaction avec une surface détectée 30 entraîne un déplacement du contacteur 7 vers les bornes 4a", 4b" des conducteurs 4a, 4b. Lorsque le contacteur 7 a atteint sa fin de course et que le moyen de rappel 8 atteint une déformation maximale, la poursuite du déplacement de l'interface de contact 2 entraîne la déformation du moyen d'écartement 10b en fonction de l'interaction de l'interface de contact 2 avec la surface de l'élément détecté 30. Le mécanisme 10 permet ainsi un ajustement de la différence de longueur de parcours qui existe entre la course du contacteur 7 et la course de l'interface de contact 2. De plus, le mécanisme 10 autorise un ajustement du déplacement de l'interface de contact 2 en fonction de variations de la surface de l'élément détecté 30 sans que cela n'impacte le déplacement du contacteur 7 en appui contre les bornes 4a", 4b" des conducteurs 4a, 4b.The integration of 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. When the contactor 7 has reached its end of travel and the return means 8 reaches a maximum deformation, 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. In addition , 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.

Selon une particularité non-limitative de construction du mécanisme 10 de gestion du déplacement du contacteur 7 avec l'interface de contact 2, celui-ci est monté coulissant dans la première portion la du corps 1 du dispositif en présentant notamment une pièce intermédiaire 10a dont les dimensions sont légèrement inférieures à celles du logement 6 intérieur de la première portion la du corps 1 du dispositif. Selon un exemple non-limitatif de l'invention, le moyen de rappel 8, sous la forme d'un ressort hélicoïdale, est monté en partie sur une portion de la périphérie de la pièce intermédiaire 10a de façon concentrique avec l'axe de déplacement de cette pièce intermédiaire 10a.According to a non-limiting feature of the construction of the mechanism 10 for managing the movement of the contactor 7 with the contact interface 2, 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. According to a non-limiting example of the invention, 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.

Selon une autre particularité complémentaire non-limitative de l'invention, le contacteur 7 étant monté coulissant selon l'axe du corps 1 du dispositif, la fixation du contacteur 7 sur la pièce qui le porte, par exemple l'interface de contact 2 ou sur la pièce intermédiaire 10a du mécanisme 10 de gestion du déplacement du contacteur 7 avec l'interface de contact 2, est opérée par un élément de fixation 7a qui autorise un déplacement angulaire, un débattement ou une oscillation du contacteur 7 par rapport à l'élément de fixation 7a et à la pièce qui porte ce contacteur 7, par exemple une vis. Ce déplacement angulaire permet ainsi une optimisation de l'interaction avec les bornes 4a", 4b" des conducteurs 4a, 4b. Selon une spécificité complémentaire de cette particularité, le déplacement angulaire ou oscillation du contacteur 7 par rapport à son élément de fixation 7a est géré par un moyen élastique 7b, par exemple une joint torique, disposé autour de l'élément de fixation 7a, entre le contacteur 7 et la structure sur laquelle le contacteur 7 est monté.According to another complementary non-limiting feature of the invention, 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. According to an additional specificity of this particularity, 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.

Selon une autre particularité complémentaire non-limitative de l'invention, les bornes 4a", 4b" des conducteurs 4a, 4b présentent la forme d'une tête plate ou légèrement convexe et bombée. Cet arrangement permet ainsi une coopération facilitée avec la surface du contacteur 7.According to another complementary non-limiting feature of the invention, 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.

Selon une autre particularité complémentaire de l'invention, l'interface de contact 2 est réalisée par une bille de diamètre supérieur au diamètre de l'orifice 3 de la première extrémité la' du corps 1 au travers duquel s'opère l'interaction de l'interface de contact 2 avec une surface d'un élément détecté 30. Cette bille 2 présente également un diamètre légèrement inférieur aux dimensions intérieures du logement 6 intérieur de la première portion la du corps 1 du dispositif. Selon un exemple de construction du dispositif, lors du montage du dispositif, la bille qui réalise l'interface de contact 2 est insérée dans la première portion la du corps 1 du dispositif avant que celle-ci ne soit insérée dans la seconde portion 1b du corps.According to another complementary feature of the invention, 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.

Il convient de noter que l'interface de contact 2 peut être réalisée par tout type de forme adaptée à la surface à détecter 30. Dans le cas d'une bille, l'interface de contact 2 autorise, d'une part, une détection de la surface d'un élément approchant selon un axe parallèle à l'axe du dispositif et de déplacement de l'interface de contact 2 et d'autre part, une détection d'un élément en déplacement selon un axe perpendiculaire à l'axe du dispositif. En effet, la surface convexe de la portion de la bille qui dépasse de l'orifice 3 de la première portion la du corps du dispositif présente une pente qui permet à l'interface de contact 2 d'interagir avec une surface en déplacement positionnée en effleurement sans toucher l'orifice 3 de la première portion la du corps du dispositif.It should be noted that the contact interface 2 can be produced by any type of shape suited to the surface to be detected 30. In the case of a ball, 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. Indeed, 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.

Selon une autre particularité complémentaire de réalisation de l'invention, à l'intérieur du corps 1 du dispositif, le premier système d'étanchéité 9 est monté dans un logement 15 de la seconde portion 1b du corps 1 séparé de la première portion la du corps 1 par un moyen de renfort 11 du maintien des conducteurs 4a, 4b en position face à une pression, le moyen de renfort 11 étant électriquement isolant et traversé au niveau de trous traversants 12 par les conducteurs 4a, 4b dont au moins une borne 4a", 4b" comprend une tête de largeur supérieure à la largeur du trou traversant 12 du moyen de renfort 11 que la borne 4a", 4b" traverse. Dans le cas d'une pression opérée au niveau des bornes 4a", 4b" des conducteurs 4a, 4b, par exemple sous l'action d'un fluide hydraulique en pression, la tête de la borne 4a", 4b" vient en butée contre le pourtour de l'orifice de plus petite largeur du trou traversant 12 du moyen de renfort 11. Ce mécanisme de butée empêche ainsi le conducteur 4a, 4b de la borne 4a", 4b" d'être expulsé, sous l'effet de la pression, de sa position dans le système d'étanchéité 9. Selon un exemple de construction préféré, le moyen de renfort 11 comporte une structure sensiblement plane en appui contre le système d'étanchéité 9 et arrangé de sorte qu'il augmente la surface d'appui d'au moins une des têtes des bornes 4a", 4b" sur le système d'étanchéité 9.According to another complementary particularity of embodiment of the invention, inside the body 1 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. In the case of pressure operated at the terminals 4a ", 4b" of the conductors 4a, 4b, for example under the action of a pressurized hydraulic fluid, the head of the terminal 4a ", 4b" comes into abutment against the perimeter of the orifice of smaller width of the through-hole 12 of the reinforcement means 11. This stop mechanism thus prevents the conductor 4a, 4b of the terminal 4a ", 4b" from being expelled, under the effect of the pressure, of its position in the sealing system 9. According to a preferred construction example, 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.

Selon un mode de réalisation préféré de l'invention, les deux bornes 4a", 4b"des conducteurs 4a, 4b sont construites avec des têtes de largeurs supérieures aux largeurs respectives des trous traversants 12 du moyen de renfort 11 traversés par ces bornes 4a", 4b".According to a preferred embodiment of the invention, 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 ".

Selon un premier mode de réalisation, le premier système d'étanchéité 9 est réalisé dans une matière élastique formant un corps électriquement isolant inséré par serrage diamétral dans son logement 15 de la seconde portion 1b du corps 1 du dispositif. Selon ce mode de réalisation, le premier système d'étanchéité 9 présente une forme et des dimensions sensiblement similaires, voire identiques, à celles de son logement 15 dans la seconde portion 1b du corps 1 du dispositif. Ce serrage diamétral permet ainsi l'obtention d'une étanchéité indépendamment de toute pression.According to a first embodiment, 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. According to this embodiment, 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.

Selon un second mode de réalisation alternatif, le premier système d'étanchéité 9 comprend :

  • un corps 9a électriquement isolant positionné dans son logement 15 de la seconde portion 1b du corps 1 du dispositif et traversé au niveau de trous traversants 13 par les au moins deux conducteurs 4a, 4b, et
  • un moyen étanche 9b monté sur la périphérie du corps isolant 9a et positionné entre le corps 9a isolant et une surface du logement 15 de la seconde portion 1b du dispositif.
According to a second alternative embodiment, the first sealing system 9 comprises:
  • an electrically insulating body 9a positioned in its housing 15 of the second portion 1b of the body 1 of the device and traversed at the level of through holes 13 by the at least two conductors 4a, 4b, and
  • a sealed means 9b mounted on the periphery of the insulating body 9a and positioned between the insulating body 9a and a surface of the housing 15 of the second portion 1b of the device.

Selon ce second mode de réalisation alternatif, le corps 9a électriquement isolant présente une forme et des dimensions sensiblement inférieures à celles de son logement 15 dans la seconde portion 1b du corps 1 du dispositif. L'épaisseur du moyen étanche 9b est alors comprimé entre le corps 9a isolant et le logement 15.According to this second alternative embodiment, 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.

Selon un mode de réalisation complémentaire, le corps isolant du premier système d'étanchéité 9 traversé au niveau de trous traversants 13 par les au moins deux conducteurs 4a, 4b, opère un serrage diamétral de chacun des conducteurs 4a, 4b. Ce mécanisme d'étanchéité au niveau des conducteurs 4a, 4b peut être mis en œuvre quel que soit le mécanisme d'étanchéité entre le système d'étanchéité 9 et son logement 15.According to a complementary embodiment, the insulating body of the first sealing system 9 traversed at the level of through holes 13 by the at least two conductors 4a, 4b, operates a diametral clamping of each of the conductors 4a, 4b. 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.

Selon une alternative à ce mode de réalisation complémentaire, le premier système d'étanchéité 9 traversé au niveau de trous traversants 13 par les au moins deux conducteurs 4a, 4b, comprend un moyen étanche 9c', 9c" monté sur la périphérie respective de chaque conducteur 4a, 4b et positionné entre un conducteur 4a, 4b et une portion du corps isolant 9a du premier système d'étanchéité 9. Les moyens étanches 9c', 9c" sont préférentiellement positionnés au niveau du pourtour des orifices des trous traversants 13 du corps isolant. Ici également, le mécanisme d'étanchéité au niveau des conducteurs 4a, 4b peut être mis en œuvre quel que soit le mécanisme d'étanchéité entre le système d'étanchéité 9 et son logement 15.According to an alternative to this complementary embodiment, 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 sealed means 9c ', 9c "are preferably positioned at the level of the periphery of the orifices of the through holes 13 of the insulating body. Here also, 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.

Selon une particularité de construction, le dispositif de détection comprend un second système d'étanchéité 14 monté au niveau d'une surface périphérique du corps 1 du dispositif et apte à interagir avec le pourtour d'un orifice d'une paroi 31 au travers de laquelle le dispositif de détection serait positionné. Alors que le premier système d'étanchéité 9 empêche un échange de fluide au travers du dispositif de détection, ce second système d'étanchéité 14 bloque tout échange de fluide entre le dispositif et une surface étanche au travers de laquelle il serait monté. Selon un exemple de construction non-limitatif, le second système d'étanchéité 14 comprend une structure élastique 14a monté, au moins en partie, dans une gorge périphérique 14b du corps 1 du dispositif.According to a particular construction feature, 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. According to a non-limiting example of construction, 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.

L'invention porte également sur un vérin 33 caractérisé en ce qu'il comprend au moins un dispositif de détection selon l'invention, le dispositif étant monté traversant ou intégré sur le cylindre 31 d'un vérin 33 de sorte que l'interface de contact 2 soit susceptible d'être déplacée par une surface d'une pièce mobile 30 du vérin 33 pour la détection de la course de cette pièce mobile.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.

Selon un exemple de construction non-limitatif de l'invention, le dispositif de détection de l'invention est monté traversant au niveau d'un logement 34 adapté de la surface du cylindre 31 et formant un orifice traversant la paroi étanche 31 du vérin 33. Ce logement 34 peut également présenter une ou plusieurs parois périphériques adaptées pour entourer au moins partiellement le pourtour du dispositif de détection lorsque celui-ci est monté dans le logement 34.According to a non-limiting example of construction of the invention, 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.

Selon une particularité complémentaire de construction, le dispositif de détection de l'invention peut être maintenu en position dans son logement 34 par l'intermédiaire d'un moyen de maintien 35. Ce moyen de maintien 35 empêche ainsi le dispositif de détection de sortir de son logement 34 sous l'effet de la pression du fluide dans le vérin. A titre d'exemple, ce moyen de maintien 35 peut également recouvrir au moins partiellement le dispositif de détection monté dans son logement 34 et interagir avec une des parois latérales du logement 34, l'interaction pouvant être de type taraudage/filetage.According to a complementary construction feature, 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. By way of example, 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.

Selon une particularité de construction du vérin, l'interface de contact 2 dispositif de détection est apte à être déplacée par une surface du piston ou de la tige du piston ou d'un élément monté sur le piston ou la tige du piston.According to a particular construction feature of the jack, 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.

Selon une autre particularité complémentaire de construction du vérin 33, le vérin 33 comprend au moins un dispositif de détection positionné pour une détection d'au moins une extrémité de course du piston ou de la tige du piston ou d'un élément monté sur le piston ou la tige du piston.According to another complementary feature of the construction of the jack 33, 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.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et représenté aux dessins annexés. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims (15)

  1. Detection device integrated into a hydraulic actuator, comprising:
    - a substantially rectilinear body (1) defining a first portion (1a) of the side of a first end (1a') and a second portion (1b) of the side of a second end (1b'),
    - a contact interface (2) which is movable in translation with respect to the body (1) of the device and along the axis of the body of the device, the interface (2) is positioned at the level of the first portion (1a) of the body (1) of the device and is designed to interact, through an opening (3) formed at the level of the first end (1a') of the body (1), with a surface of a detected element,
    - at least two conductors (4a, 4b) mounted at the level of the second portion (1b) of the body (1) of the device, these conductors (4a, 4b) comprising, on the one hand, first respective ends (4a', 4b') oriented towards the second end (lb') of the body (1) of the device at the level of at least one opening (5) to form connection pins to an electric circuit and, on the other hand, respective second ends (4a", 4b") forming terminals in a housing (6) of the first portion (1a) of the body (1) of the device,
    - at least one contactor (7) mounted so as to be movable relative to the body (1) of the device, and displaced under the action, on the one hand, of a force from the contact interface (2) and, on the other hand, of a force from at least one return means (8) which opposes the force of the contact interface (2), the contactor (7) being capable, at the level of an end of travel, of connecting the terminals (4a", 4b") of the conductors (4a, 4b),
    - at least one first sealing system (9) mounted at the level of an inner housing (15) at the second portion (1b) of the body of the device, configured to prevent any exchange of fluid between, on the one hand, the medium of the element detected at the level of the first end (1a') of the body (1) of the device and, on the other hand, a second medium at the level of the second end (1b') of the body of the device, this first sealing system (9) being electrically insulating and traversed by the at least two conductors (4a, 4b).
  2. Detection device according to claim 1, characterised in that the contactor (7) is mounted so as to be movable in translation along the axis of the body (1) of the device.
  3. Detection device according to claim 1, characterised in that the contactor (7) is mounted so as to be movable in rotation about an axis perpendicular to the axis of the body (1) of the device.
  4. Detection device according to any of claims 1 to 3, characterised in that the contact interface (2) and the contactor (7) are mounted so as to be associated in displacement in a housing (6) of the first portion (1a) of the body (1) of the device, the travel of the contactor (7) being defined between:
    - a first position of the contactor (7) when the contactor (7) is in contact with the terminals (4a", 4b") of the conductors (4a, 4b), and
    - a second position of the contactor (7) when, on the one hand, the contactor (7) is not in contact with at least one of the terminals (4a', 4b') of the conductors (4a, 4b) and, on the other hand, the contact interface (2) is in its position furthest away from the second portion (1b) of the body (1) of the device.
  5. Detection device according to claim 4, characterised in that the device comprises a mechanism (10) for managing the displacement of the contactor (7) with the contact interface (2), this mechanism (10) comprising :
    - an intermediate part (10a) comprising, on the one hand, a first end oriented towards the terminals (4a", 4b") of the conductors (4a, 4b) and which interacts with the contactor (7) and, on the other hand, a second end of the side opposite the first end,
    - a spacer means (10b) disposed between the contact interface (2) and the second end of the intermediate part (10a), the stiffness of the spacer means (10b) of the displacement management mechanism being greater than the stiffness of the return means (8).
  6. Detection device according to any of claims 1, 2, 4 or 5, characterised in that, the contactor (7) being mounted so as to slide along the axis of the body (1) of the device, the fixing of the contactor (7) to the part which supports it is performed by a fixing element (7a) which allows an angular displacement, a deflection or an oscillation of the contactor (7) with respect to the fixing element (7a) and to the part which supports this contactor (7).
  7. Detection device according to any of claims 1 to 6, characterised in that the contact interface (2) is formed by a ball with a diameter greater than the diameter of the opening (3) of the first end (1a') of the body (1) through which the interaction of the contact interface (2) with a surface of a detected element (30) takes place.
  8. Detection device according to any of claims 1 to 7, characterised in that, inside the body (1) 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 (1a) of the body (1) by reinforcing means (11) for holding the conductors (4a, 4b) in position in the face of pressure, the reinforcement means (11) being electrically insulating and traversed at the level of traversing holes (12) by the conductors (4a, 4b) at least one terminal (4a", 4b") of which comprises a head with a width greater than the width of the traversing hole (12) of the reinforcement means (11) through which the terminal (4a", 4b") passes.
  9. Detection device according to any of claims 1 to 8, characterised in that the first sealing system (9) is made from an elastic material forming an electrically insulating body inserted by clamping diametrically into its housing (15) of the second portion (1b) of the body (1) of the device.
  10. Detection device according to any of claims 1 to 8, characterised in that the first sealing system (9) comprises:
    - an electrically insulating body (9a) positioned in its housing (15) of the second portion (1b) of the body (1) of the device and traversed at the level of traversing holes (13) by the at least two conductors (4a, 4b), and
    - a sealing means (9b) mounted on the periphery of the insulating body (9a) and positioned between the insulating body (9a) and a housing surface (15) of the second portion (1b) of the device.
  11. Detection device according to any of claims 1 to 10, characterised in that the insulating body of the first sealing system (9) traversed at the level of traversing holes (13) by the at least two conductors (4a, 4b) performs a diametrical clamping of each of the conductors (4a, 4b).
  12. Detection device according to any of claims 1 to 10, characterised in that the first sealing system (9) traversed at the level of traversing holes (13) by the at least two conductors (4a, 4b) comprises sealing 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).
  13. Detection device according to any of claims 1 to 12, characterised in that the detection device comprises a second sealing system (14) mounted at the level of a peripheral surface of the body (1) of the device and capable of interacting with the periphery of an opening of a wall (31) through which the detection device would be positioned.
  14. Actuator (33) characterised in that it comprises at least one detection device according to any of claims 1 to 13, the device being mounted through or integrated onto the cylinder (31) of an actuator (33) such that the contact interface (2) is capable of being displaced by a surface of a moving part (30) of the actuator (33) for the detection of the stroke of this moving part.
  15. Actuator (33) according to claim 14, characterised in that the contact interface (2) detection device is capable of being displaced by a surface of the piston or the piston rod or an element mounted on the piston or the piston rod.
EP17305777.9A 2017-06-22 2017-06-22 Detection device Active EP3419037B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17305777.9A EP3419037B1 (en) 2017-06-22 2017-06-22 Detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17305777.9A EP3419037B1 (en) 2017-06-22 2017-06-22 Detection device

Publications (2)

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EP3419037A1 EP3419037A1 (en) 2018-12-26
EP3419037B1 true EP3419037B1 (en) 2020-10-21

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EP17305777.9A Active EP3419037B1 (en) 2017-06-22 2017-06-22 Detection device

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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 (en) * 1982-08-10 1984-02-17 Iseki & Co Ltd Expansion/contraction condition detector for hydraulic cylinder and the like

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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