EP2609607B1 - Device for detection and signalliing of pushbutton's status change - Google Patents

Device for detection and signalliing of pushbutton's status change Download PDF

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Publication number
EP2609607B1
EP2609607B1 EP11737970.1A EP11737970A EP2609607B1 EP 2609607 B1 EP2609607 B1 EP 2609607B1 EP 11737970 A EP11737970 A EP 11737970A EP 2609607 B1 EP2609607 B1 EP 2609607B1
Authority
EP
European Patent Office
Prior art keywords
button
push
control head
electrical energy
energy generator
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.)
Not-in-force
Application number
EP11737970.1A
Other languages
German (de)
French (fr)
Other versions
EP2609607A1 (en
Inventor
Tewfik Meftah
Alain Guillot
Dominique Benni
Bernard Desaphie
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2609607A1 publication Critical patent/EP2609607A1/en
Application granted granted Critical
Publication of EP2609607B1 publication Critical patent/EP2609607B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/08—Indicators; Distinguishing marks
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • 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
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/168—Indicators for switching condition, e.g. "on" or "off" making use of an electromagnetic wave communication
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00—Transmission systems of control signals via wireless link
    • G08C2201/10—Power supply of remote control devices
    • G08C2201/11—Energy harvesting
    • G08C2201/112—Mechanical energy, e.g. vibration, piezoelectric
    • 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
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H01H2003/024—Resetting of bistable emergency operating part by pulling it

Definitions

  • the present invention relates to a device for detecting and reporting the change of state of a push button as well as to the control assembly grouping the push button and the detection and signaling device.
  • the detection and signaling device of the invention is particularly suitable for use on an emergency stop push button.
  • Such a device is known for example from the document EP 1 152 441 .
  • the object of the invention is therefore to provide a device for detecting the change of state of a push button such as for example an emergency stop and report this change of state, this device being easy to assemble on an existing push button, without affecting the structure of the latter.
  • the electric energy generator is of the electromagnetic type and comprises a magnetic circuit provided with a fixed part and a moving part and an electromagnetic coil traversed by the magnetic circuit.
  • the device comprises a connecting piece cooperating with the electrical energy generator and operable in translation by the control head.
  • the connecting piece comprises a ring mounted on return means and coaxially with respect to the opening.
  • the device comprises a spring mounted between the connecting piece and the movable part of the electrical energy generator.
  • the connecting piece comprises a lug secured to the ring, said lug having an oblong opening through which a lug made on the movable part.
  • the mobile part of the electrical energy generator is movable between a first position and a second position and the energy generator is arranged to generate a first quantity of energy during a passage of the mobile part of the the first position at the second position and a second amount of energy during a transition from the moving part of the second position to the first position.
  • the device comprises an electronic card housed in the housing and comprising the wireless transmitter, said wireless transmitter being electrically connected to the generator of electrical energy.
  • the transmitter is radiofrequency.
  • the transmitter is of the infrared type.
  • the invention also relates to a control assembly comprising a push button having a body, a control head mounted on the body and operable in translation along a main axis between several positions to give different states to the push button, characterized in that the control assembly also comprises a device for detecting and signaling the change of state of the push-button as defined above, said device being threaded around the push-button and arranged to mechanically cooperate with the control head.
  • the wireless transmitter is arranged to send a first message during a depression of the control head of the push button and a second message when the control head of the push button is released.
  • the inventions detailed above are particularly adapted to be used for an emergency stop type pushbutton.
  • the device of the invention makes it possible to detect the change of state of a pushbutton and to signal this change of state by sending a message to a receiver.
  • This device is particularly adapted to operate on a push button, for example type emergency stop.
  • a push button 2 type emergency stop has a known architecture.
  • This architecture consists mainly of a body 21, a control head 20 mounted on the body 21, a fixing device 7 and at least one contact unit 22, for example mechanically mounted on the body 21 With the aid of the fixing device 7.
  • a contact unit comprises, for example, movable contacts that can be actuated by a pressure on the control head 20 along a control axis (X).
  • the contacts of the contact unit are of normally closed type (NC for "Normally Closed" in English) so as to control the opening of an electrical circuit during the Pushing the control head 20.
  • Other contact units can also be hung to perform other functions.
  • the pushbutton 2 is intended to be mounted axially in a standard diameter orifice formed through a wall P.
  • the control head 20 is located on the front side ( AV) relative to the wall P and one or more contact units 22 are mounted on the rear side (AR) with respect to the wall P, rendering these units invisible to the user ( figures 1 and 4 ).
  • the fixing device 7 which makes it possible to fix the push-button on the wall P and to accommodate one or more contact units 22 is not precisely described in this application. Such a device 7 is shown in the accompanying figures and precisely described in the published patent EP0889564 or his correspondent US6050528 .
  • the device 3 for detecting and signaling the invention is in the form of an accessory or additive that can be added to the current push button 2 without changing the structure of the latter.
  • the device 3 of the invention is therefore removable and can be added to or dissociated from the push button 2 easily.
  • the device 3 of the invention is just to be threaded along the control axis (X) around the body 21 of the pushbutton 2 so as to be positioned between the control head 20 and the wall P.
  • the control assembly of the invention is formed of a push button 2, for example of the emergency stop type and a detection and signaling device 3 as described below. These two elements, forming the control assembly, are assembled one on the other in such a way that no structural or functional modification is necessary to make them work together.
  • the device 3 for detecting and signaling the invention comprises a housing 30 composed of a base 300 intended to bear against the wall P and a cover 301 closing on the base 300.
  • the housing 30 is traversed right through by an opening 302 through which is inserted the push-button 2, said opening 302 being intended to be positioned coaxially with respect to the axis of the orifice passing through the wall P.
  • the base 300 comprises in particular a pipe 303 forming the inner wall of the opening 302.
  • the device comprises an electrical energy generator 1 housed in the housing and for converting a mechanical energy into electrical energy.
  • This energy generator 1 is for example of electromagnetic induction type or piezoelectric type and makes it possible to transform a mechanical energy into electrical energy, the mechanical energy being provided by the movement of a control member mobile mechanics, such as the control head 20 of the push button.
  • An electromagnetic induction energy generator 1 is shown in FIG. figure 7 . It makes it possible to generate an electric current in an excitation coil 11 by varying the magnetic flux passing through the coil 11 by an external mechanical action.
  • the generator 1 comprises in particular said excitation coil 11 and a magnetic circuit through which a magnetic field can flow, said magnetic circuit being formed of a fixed part and a mobile part 10.
  • the magnetic flux in the magnetic circuit is defined by the instantaneous angular position of the movable portion relative to the fixed portion so that the movement of the movable portion relative to the fixed portion creates a variation of the magnetic flux through the coil 11 which causes the creation of an electric current in the coil 11.
  • the voltage created across the coil 11 by the variation of the flux magnetic depends on the time and therefore the speed of movement of the movable portion 10 relative to the fixed part.
  • the excitation coil 11 comprises a frame 110 made of an insulating material, on which is wound a winding 111 of n turns of a conductive wire.
  • the armature 110 has a central opening formed along a longitudinal axis and whose dimensions are adapted to be traversed several times by the magnetic circuit.
  • the fixed part of the magnetic circuit passes through the central opening of the coil 11 twice, forming a loop.
  • the magnetic circuit thus crosses the central opening of the coil 11 a first time, then bypasses the coil 11 to form the loop, and passes through the central opening of the coil 11 a second time.
  • the moving part 10 of the magnetic circuit has, for example, a symmetrical H-shaped shape comprising, for example, a permanent magnet 100 sandwiched between two parallel layers 101a, 101b made of ferromagnetic material, an upper layer 101a and a lower layer 101b.
  • This movable portion 10 is rotatably mounted on a horizontal axis of rotation perpendicular to the longitudinal axis of the central opening of the armature 110.
  • the fixed part of the magnetic circuit is made of a material of high magnetic permeability such as a ferromagnetic material.
  • the fixed part comprises a U-shaped base 120 spanning the excitation coil 11.
  • the fixed part of the magnetic circuit also comprises a first arm 121 and a second arm 122 distinct, non-contiguous and non-identical, one of the arms being the reflection of the other in a mirror.
  • the first arm 121 is connected to the first end of the base 120 while the second arm 122 is connected to the second end of the base 120.
  • These two arms 121, 122 are L-shaped and distinctly pass through the opening central of the armature 110 in two planes parallel to the longitudinal axis of the central opening of the coil 11.
  • each of the arms 121, 122 are positioned on either side of the permanent magnet 100 of the movable part 10 and between the two ferromagnetic layers 101a, 101b of the movable part 10.
  • Each arm 121, 122 forms a stop for the movable part 10 and defines two opposite bearing surfaces, an upper bearing area and a lower bearing area.
  • the movable portion 10 has a degree of freedom in rotation between the stops formed by each of the arms 121, 122.
  • the magnetic field flowing in the arms 121, 122 always passes through.
  • the central opening of the coil 11 in the same direction.
  • the magnetic field passes through the central opening of the excitation coil 11 twice in the same direction.
  • the movable portion 10 performs a rocking movement about its axis and can take two distinct end positions defined by the stops, in each of which the movable portion 10 is retained by magnetic forces.
  • the moving part 10 is detached from one of its extreme positions and moved beyond a central equilibrium position, it is instantly attracted by magnetic effect to the other end position. This phenomenon is described in particular in the previous patent application GB 1,312,927 .
  • the energy generator 1 is housed in the housing 30 and cooperates mechanically with the control head 20 via a movable connecting piece 4 operable in translation by the control head 20.
  • This connecting piece 4 is housed in the housing 30 and converts the movement of the control head 20 between its two positions in a movement of the movable portion 10 of the generator 1 between its two positions.
  • the energy generator is offset relative to the control axis (X).
  • the device also comprises at least one electronic card 5 ( figure 3 ) comprising a wireless transmitter, a device for accumulating the electrical energy generated by the generator 1 and an antenna associated with the wireless transmitter.
  • the wireless transmitter is for example radiofrequency type and is powered by the current produced by the generator 1 via the energy storage device. Using the antenna, it sends a message to a remote receiver (not shown) which has a corresponding antenna to receive the message.
  • the wireless communication protocol used between the transmitter and the receiver will be for example ZIGBEE.
  • the transmitter may be of the infrared type. According to the invention, the sending of a message is controlled by the movement of the control head 20.
  • the message may comprise several identical successive frames and include in particular a unique identifier of the push button allowing the receiver to identify the button. -picker that has been operated.
  • the receiver will include, for example, a table listing all the pushbuttons with which it is paired and the state of each of these pushbuttons.
  • the passage of the mobile part 10 of the generator 1 from a first position to a second position makes it possible to generate a first quantity of energy in the form of a first voltage that can be exploited downstream by the electronic card 5.
  • a second quantity of energy in the form of a second voltage, during the passage of the mobile part 10 of the generator 1 from its second position to its first position.
  • the first amount of energy and the second amount of energy generated during a round trip of the mobile part 10 of the generator 1 can each be used by the electronic card 5 to send a separate message.
  • the two voltages generated are in fact of opposite signs, the first voltage being for example positive and the second negative voltage, which allows the electronic card to distinguish it. it is a depression or a release of the control head 20 of the push button 2 and send two different messages for each of the actions.
  • the connecting piece 4 comprises a ring 40 made around the axis (X) and is arranged to slide along the axis (X) between the tubing 303 made on the base 300 of the housing 30 and the inner surface of the cover 301. of the housing 30.
  • the connecting piece 4 is operable in translation along the control axis (X) between a relaxed position and a depressed position and is urged in its movement by one or more springs 60, 61 (two springs on the figure 4 ) coming against the base 300 of the housing 30 of the device.
  • the connecting piece 4 also comprises a tab 41 extending parallel to the control axis (X), said tab 41 having an oblong opening 42 extending in length parallel to the control axis (X).
  • the movable portion 10 of the generator 1 mechanically cooperates with the connecting piece through a lug 102 passing through the oblong opening 42, the oblong opening 42 then forming a cam and the lug 102 a cam follower.
  • the device comprises a spring 62 ( figures 3 , 5 and 6 ) mounted between the lug 41 of the connecting piece 4 and the mobile part 10 of the generator 1.
  • the connecting piece 4 thus mechanically cooperates with the mobile part 10 of the generator 1 via the spring 62 and through the assembly formed by the lug 102 and the oblong opening 42.
  • the invention will be particularly used to detect the change of state of emergency stop type pushbuttons connected in series along a process to be controlled. If the number of these emergency stops is important, the device 3 for detection and reporting of the invention will know which emergency stop has been activated.

Description

La présente invention se rapporte à un dispositif de détection et de signalement du changement d'état d'un bouton-poussoir ainsi qu'à l'ensemble de commande regroupant le bouton-poussoir et le dispositif de détection et de signalement. Le dispositif de détection et de signalement de l'invention est notamment parfaitement adapté pour être employé sur un bouton-poussoir de type arrêt d'urgence. Un tel dispositif est connu pour example du document EP 1 152 441 .The present invention relates to a device for detecting and reporting the change of state of a push button as well as to the control assembly grouping the push button and the detection and signaling device. The detection and signaling device of the invention is particularly suitable for use on an emergency stop push button. Such a device is known for example from the document EP 1 152 441 .

Dans certains processus commandés, il est connu de mettre plusieurs arrêts d'urgence en série afin de pouvoir sécuriser le processus sur toute sa longueur. L'actionnement de l'un des arrêts d'urgence permet de stopper le processus. Cependant, lorsque le nombre d'arrêts d'urgence en série est très important, il est souvent difficile de savoir lequel des arrêts d'urgence a été actionné.In some controlled processes, it is known to put several emergency stops in series in order to secure the process over its entire length. Activation of one of the emergency stops stops the process. However, when the number of serial emergency stops is very important, it is often difficult to know which of the emergency stops has been activated.

Le but de l'invention est donc de proposer un dispositif permettant de détecter le changement d'état d'un bouton-poussoir tel que par exemple un arrêt d'urgence et de signaler ce changement d'état, ce dispositif étant facile à assembler sur un bouton-poussoir existant, sans toucher à la structure de ce dernier.The object of the invention is therefore to provide a device for detecting the change of state of a push button such as for example an emergency stop and report this change of state, this device being easy to assemble on an existing push button, without affecting the structure of the latter.

Ce but est atteint par un dispositif de détection et de signalement du changement d'état d'un bouton-poussoir, ledit bouton-poussoir comportant un corps, une tête de commande montée sur le corps et actionnable en translation suivant un axe principal entre plusieurs positions pour conférer différents états au bouton-poussoir afin de commander un circuit électrique, le dispositif se présentant sous la forme d'un additif amovible par rapport au bouton-poussoir et comportant :

  • un boîtier à travers lequel est formée une ouverture destinée à être traversée par le corps du bouton-poussoir,
  • un générateur d'énergie électrique logé dans le boîtier et apte à coopérer avec la tête de commande pour convertir une énergie mécanique en énergie électrique,
  • un émetteur sans-fil permettant d'envoyer un message à un récepteur distant, ledit émetteur sans-fil étant logé dans le boîtier et connecté électriquement au générateur d'énergie électrique.
This object is achieved by a device for detecting and signaling the change of state of a push button, said push-button comprising a body, a control head mounted on the body and operable in translation along a main axis between several positions to give different states to the push button to control an electrical circuit, the device being in the form of a removable additive relative to the push button and comprising:
  • a housing through which is formed an opening to be traversed by the body of the push button,
  • an electric energy generator housed in the housing and able to cooperate with the control head to convert mechanical energy into electrical energy,
  • a wireless transmitter for sending a message to a remote receiver, said wireless transmitter being housed in the housing and electrically connected to the power generator.

Selon une particularité, le générateur d'énergie électrique est de type électromagnétique et comporte un circuit magnétique doté d'une partie fixe et d'une partie mobile et une bobine électromagnétique traversée par le circuit magnétique.According to a particularity, the electric energy generator is of the electromagnetic type and comprises a magnetic circuit provided with a fixed part and a moving part and an electromagnetic coil traversed by the magnetic circuit.

Selon une autre particularité, le dispositif comporte une pièce de liaison coopérant avec le générateur d'énergie électrique et actionnable en translation par la tête de commande.According to another feature, the device comprises a connecting piece cooperating with the electrical energy generator and operable in translation by the control head.

Selon une autre particularité, la pièce de liaison comporte un anneau monté sur des moyens de rappel et de manière coaxiale par rapport à l'ouverture.According to another feature, the connecting piece comprises a ring mounted on return means and coaxially with respect to the opening.

Selon une autre particularité, le dispositif comporte un ressort monté entre la pièce de liaison et la partie mobile du générateur d'énergie électrique.According to another feature, the device comprises a spring mounted between the connecting piece and the movable part of the electrical energy generator.

Selon une autre particularité, la pièce de liaison comporte une patte solidaire de l'anneau, ladite patte comportant une ouverture oblongue traversée par un ergot réalisé sur la partie mobile.According to another feature, the connecting piece comprises a lug secured to the ring, said lug having an oblong opening through which a lug made on the movable part.

Selon une autre particularité, la partie mobile du générateur d'énergie électrique est mobile entre une première position et une deuxième position et le générateur d'énergie est agencé pour générer une première quantité d'énergie lors d'un passage de la partie mobile de la première position à la deuxième position et une seconde quantité d'énergie lors d'un passage de la partie mobile de la deuxième position à la première position.According to another particularity, the mobile part of the electrical energy generator is movable between a first position and a second position and the energy generator is arranged to generate a first quantity of energy during a passage of the mobile part of the the first position at the second position and a second amount of energy during a transition from the moving part of the second position to the first position.

Selon une autre particularité, le dispositif comporte une carte électronique logée dans le boîtier et comprenant l'émetteur sans-fil, ledit émetteur sans-fil étant connecté électriquement au générateur d'énergie électrique.According to another feature, the device comprises an electronic card housed in the housing and comprising the wireless transmitter, said wireless transmitter being electrically connected to the generator of electrical energy.

Selon une autre particularité, l'émetteur est à radiofréquence.According to another particularity, the transmitter is radiofrequency.

Selon une autre particularité, l'émetteur est de type infrarouge.According to another particularity, the transmitter is of the infrared type.

L'invention concerne également un ensemble de commande comportant un bouton-poussoir doté d'un corps, d'une tête de commande montée sur le corps et actionnable en translation suivant un axe principal entre plusieurs positions pour conférer différents états au bouton-poussoir, caractérisé en ce que l'ensemble de commande comporte également un dispositif de détection et de signalement du changement d'état du bouton-poussoir tel que défini ci-dessus, ledit dispositif étant enfilé autour du bouton-poussoir et agencé pour coopérer mécaniquement avec la tête de commande.The invention also relates to a control assembly comprising a push button having a body, a control head mounted on the body and operable in translation along a main axis between several positions to give different states to the push button, characterized in that the control assembly also comprises a device for detecting and signaling the change of state of the push-button as defined above, said device being threaded around the push-button and arranged to mechanically cooperate with the control head.

Selon l'invention, l'émetteur sans-fil est agencé pour envoyer un premier message lors d'un enfoncement de la tête de commande du bouton-poussoir et un second message lors d'un relâchement de la tête de commande du bouton-poussoir.According to the invention, the wireless transmitter is arranged to send a first message during a depression of the control head of the push button and a second message when the control head of the push button is released. .

Selon une particularité :

  • l'ensemble de commande comporte une unité de contacts assemblée sur le corps du bouton-poussoir et apte à être actionnée par la tête de commande,
  • le corps du bouton-poussoir est monté dans un orifice réalisé à travers une paroi, la tête de commande étant située du côté avant par rapport à la paroi et l'unité de contacts du côté arrière par rapport à la paroi,
  • le dispositif de détection du changement d'état du bouton-poussoir est monté du côté avant par rapport à la paroi et agencé entre la tête de commande et la paroi.
According to a particularity:
  • the control assembly comprises a unit of contacts assembled on the body of the pushbutton and able to be actuated by the control head,
  • the body of the push button is mounted in a hole made through a wall, the control head being located on the front side with respect to the wall and the contact unit of the rear side with respect to the wall,
  • the device for detecting the change of state of the push-button is mounted on the front side with respect to the wall and arranged between the control head and the wall.

Les inventions détaillées ci-dessus sont particulièrement adaptées pour être employées pour un bouton-poussoir de type arrêt d'urgence.The inventions detailed above are particularly adapted to be used for an emergency stop type pushbutton.

D'autres caractéristiques et avantages vont apparaître dans la description détaillée qui suit en se référant à un mode de réalisation donné à titre d'exemple et représenté par les dessins annexés sur lesquels :

  • la figure 1 représente, en perspective, l'ensemble de commande de l'invention comportant le bouton-poussoir monté à travers une paroi et le dispositif de détection et de signalement de l'invention,
  • la figure 2 représente, en vue de dessus, l'ensemble de commande de l'invention,
  • la figure 3 représente, en vue éclatée, le dispositif de détection et de signalement de l'invention ainsi que le bouton-poussoir, sans son unité de contacts, destiné à être inséré dans le dispositif de l'invention,
  • la figure 4 représente l'ensemble de commande de l'invention en vue de coupe selon B-B sur la figure 2,
  • les figures 5 et 6 représentent l'ensemble de commande de l'invention en vue de coupe selon A-A sur la figure 2, respectivement avec la tête de commande relâchée et la tête de commande enfoncée,
  • la figure 7 représente en vue éclatée le générateur d'énergie employé dans l'invention,
  • les figures 8A et 8B montrent les deux positions de fonctionnement du générateur d'énergie représenté en figure 7.
Other features and advantages will appear in the detailed description which follows with reference to an embodiment given by way of example and represented by the appended drawings in which:
  • the figure 1 represents, in perspective, the control assembly of the invention comprising the push-button mounted through a wall and the detection and signaling device of the invention,
  • the figure 2 represents, in a view from above, the control assembly of the invention,
  • the figure 3 represents, in exploded view, the detection and signaling device of the invention as well as the push-button, without its contact unit, intended to be inserted into the device of the invention,
  • the figure 4 represents the control assembly of the invention for cutting according to BB on the figure 2 ,
  • the Figures 5 and 6 represent the control assembly of the invention for cutting along AA on the figure 2 , respectively with the control head released and the control head depressed,
  • the figure 7 represents in exploded view the energy generator employed in the invention,
  • the Figures 8A and 8B show the two operating positions of the energy generator represented in figure 7 .

Le dispositif de l'invention permet de détecter le changement d'état d'un bouton-poussoir et de signaler ce changement d'état en envoyant un message à un récepteur. Ce dispositif est notamment adapté pour fonctionner sur un bouton-poussoir, par exemple de type arrêt d'urgence.The device of the invention makes it possible to detect the change of state of a pushbutton and to signal this change of state by sending a message to a receiver. This device is particularly adapted to operate on a push button, for example type emergency stop.

En référence aux figures 3 à 6, un bouton-poussoir 2 de type arrêt d'urgence présente une architecture connue. Cette architecture se compose principalement d'un corps 21, d'une tête de commande 20 montée sur le corps 21, d'un dispositif de fixation 7 et d'au moins une unité de contacts 22, par exemple montée mécaniquement sur le corps 21 à l'aide du dispositif de fixation 7. Une unité de contacts comporte par exemple des contacts mobiles actionnables par une pression sur la tête de commande 20 suivant un axe de commande (X). Pour assurer la fonction d'arrêt d'urgence, les contacts de l'unité de contact sont de type normalement fermé (NC pour "Normally Closed" en anglais) de manière à commander l'ouverture d'un circuit électrique lors de l'enfoncement de la tête de commande 20. D'autres unités de contacts peuvent également être accrochées afin d'assurer d'autres fonctions.With reference to Figures 3 to 6 , a push button 2 type emergency stop has a known architecture. This architecture consists mainly of a body 21, a control head 20 mounted on the body 21, a fixing device 7 and at least one contact unit 22, for example mechanically mounted on the body 21 With the aid of the fixing device 7. A contact unit comprises, for example, movable contacts that can be actuated by a pressure on the control head 20 along a control axis (X). To ensure the emergency stop function, the contacts of the contact unit are of normally closed type (NC for "Normally Closed" in English) so as to control the opening of an electrical circuit during the Pushing the control head 20. Other contact units can also be hung to perform other functions.

Le bouton-poussoir 2 est destiné à être monté axialement dans un orifice d'un diamètre standard formé à travers une paroi P. Lorsque le bouton-poussoir 2 est monté dans l'orifice, la tête de commande 20 est située du côté avant (AV) par rapport à la paroi P et une ou plusieurs unités de contacts 22 sont montées du côté arrière (AR) par rapport à la paroi P, ce qui rend ces unités invisibles pour l'utilisateur (figures 1 et 4). Le dispositif de fixation 7 qui permet de fixer le bouton-poussoir sur la paroi P et d'accueillir une ou plusieurs unités de contacts 22 n'est pas décrit précisément dans cette demande. Un tel dispositif 7 est représenté sur les figures annexées et décrit précisément dans le brevet publié EP0889564 ou son correspondant US6050528 .The pushbutton 2 is intended to be mounted axially in a standard diameter orifice formed through a wall P. When the pushbutton 2 is mounted in the orifice, the control head 20 is located on the front side ( AV) relative to the wall P and one or more contact units 22 are mounted on the rear side (AR) with respect to the wall P, rendering these units invisible to the user ( figures 1 and 4 ). The fixing device 7 which makes it possible to fix the push-button on the wall P and to accommodate one or more contact units 22 is not precisely described in this application. Such a device 7 is shown in the accompanying figures and precisely described in the published patent EP0889564 or his correspondent US6050528 .

Le dispositif 3 de détection et de signalement de l'invention se présente sous la forme d'un accessoire ou additif qu'il est possible d'ajouter au bouton-poussoir 2 actuel sans modifier la structure de ce dernier. Le dispositif 3 de l'invention est donc amovible et peut donc être ajouté ou dissocié du bouton-poussoir 2 aisément. Le dispositif 3 de l'invention se trouve juste être enfilé suivant l'axe de commande (X) autour du corps 21 du bouton-poussoir 2 de manière à se positionner entre la tête de commande 20 et la paroi P.The device 3 for detecting and signaling the invention is in the form of an accessory or additive that can be added to the current push button 2 without changing the structure of the latter. The device 3 of the invention is therefore removable and can be added to or dissociated from the push button 2 easily. The device 3 of the invention is just to be threaded along the control axis (X) around the body 21 of the pushbutton 2 so as to be positioned between the control head 20 and the wall P.

L'ensemble de commande de l'invention est formé d'un bouton-poussoir 2, par exemple de type arrêt d'urgence et d'un dispositif 3 de détection et de signalement tel que décrit ci-dessous. Ces deux éléments, formant l'ensemble de commande, sont assemblés l'un sur l'autre de telle manière qu'aucune modification structurelle ou fonctionnelle n'est nécessaire pour les faire fonctionner ensemble.The control assembly of the invention is formed of a push button 2, for example of the emergency stop type and a detection and signaling device 3 as described below. These two elements, forming the control assembly, are assembled one on the other in such a way that no structural or functional modification is necessary to make them work together.

En référence à la figure 3, le dispositif 3 de détection et de signalement de l'invention comporte un boîtier 30 composé d'une base 300 destinée à venir en appui contre la paroi P et d'un capot 301 venant se refermer sur la base 300. Le boîtier 30 est traversé de part en part par une ouverture 302 à travers laquelle est inséré le bouton-poussoir 2, ladite ouverture 302 étant destinée à être positionnée de manière coaxiale par rapport à l'axe de l'orifice traversant la paroi P. La base 300 comporte notamment une tubulure 303 formant la paroi interne de l'ouverture 302.With reference to the figure 3 , the device 3 for detecting and signaling the invention comprises a housing 30 composed of a base 300 intended to bear against the wall P and a cover 301 closing on the base 300. The housing 30 is traversed right through by an opening 302 through which is inserted the push-button 2, said opening 302 being intended to be positioned coaxially with respect to the axis of the orifice passing through the wall P. The base 300 comprises in particular a pipe 303 forming the inner wall of the opening 302.

Le dispositif comporte un générateur d'énergie électrique 1 logé dans le boîtier et permettant de convertir une énergie mécanique en énergie électrique. Ce générateur d'énergie 1, détaillé ci-dessous, est par exemple de type à induction électromagnétique ou de type piézoélectrique et permet de transformer une énergie mécanique en énergie électrique, l'énergie mécanique étant fournie par le mouvement d'un organe de commande mécanique mobile, tel que la tête de commande 20 du bouton-poussoir.The device comprises an electrical energy generator 1 housed in the housing and for converting a mechanical energy into electrical energy. This energy generator 1, detailed below, is for example of electromagnetic induction type or piezoelectric type and makes it possible to transform a mechanical energy into electrical energy, the mechanical energy being provided by the movement of a control member mobile mechanics, such as the control head 20 of the push button.

Un générateur 1 d'énergie à induction électromagnétique est représenté en figure 7. Il permet de générer un courant électrique dans une bobine d'excitation 11 en faisant varier le flux magnétique traversant la bobine 11 par une action mécanique externe.An electromagnetic induction energy generator 1 is shown in FIG. figure 7 . It makes it possible to generate an electric current in an excitation coil 11 by varying the magnetic flux passing through the coil 11 by an external mechanical action.

En référence à la figure 7, le générateur 1 comporte notamment ladite bobine d'excitation 11 et un circuit magnétique à travers lequel peut circuler un champ magnétique, ledit circuit magnétique étant formé d'une partie fixe et d'une partie mobile 10.With reference to the figure 7 the generator 1 comprises in particular said excitation coil 11 and a magnetic circuit through which a magnetic field can flow, said magnetic circuit being formed of a fixed part and a mobile part 10.

Le flux magnétique dans le circuit magnétique est défini par la position angulaire instantanée de la partie mobile 10 par rapport à la partie fixe de sorte que le mouvement de la partie mobile 10 par rapport à la partie fixe crée une variation du flux magnétique à travers la bobine 11 ce qui entraîne la création d'un courant électrique dans la bobine 11. La tension créée aux bornes de la bobine 11 par la variation du flux magnétique dépend du temps et donc de la vitesse de déplacement de la partie mobile 10 par rapport à la partie fixe.The magnetic flux in the magnetic circuit is defined by the instantaneous angular position of the movable portion relative to the fixed portion so that the movement of the movable portion relative to the fixed portion creates a variation of the magnetic flux through the coil 11 which causes the creation of an electric current in the coil 11. The voltage created across the coil 11 by the variation of the flux magnetic depends on the time and therefore the speed of movement of the movable portion 10 relative to the fixed part.

La bobine d'excitation 11 comporte une armature 110 réalisée dans un matériau isolant, sur laquelle est enroulé un bobinage 111 de n spires d'un fil conducteur. L'armature 110 présente une ouverture centrale formée suivant un axe longitudinal et dont les dimensions sont adaptées pour pouvoir être traversée plusieurs fois par le circuit magnétique. Sur la figure 7, la partie fixe du circuit magnétique traverse deux fois l'ouverture centrale de la bobine 11 en formant une boucle. Le circuit magnétique traverse donc une première fois l'ouverture centrale de la bobine 11, puis contourne la bobine 11 pour former la boucle, et traverse une seconde fois l'ouverture centrale de la bobine 11.The excitation coil 11 comprises a frame 110 made of an insulating material, on which is wound a winding 111 of n turns of a conductive wire. The armature 110 has a central opening formed along a longitudinal axis and whose dimensions are adapted to be traversed several times by the magnetic circuit. On the figure 7 the fixed part of the magnetic circuit passes through the central opening of the coil 11 twice, forming a loop. The magnetic circuit thus crosses the central opening of the coil 11 a first time, then bypasses the coil 11 to form the loop, and passes through the central opening of the coil 11 a second time.

La partie mobile 10 du circuit magnétique présente par exemple une forme symétrique en H comportant par exemple un aimant permanent 100 pris entre deux couches 101 a, 101b parallèles en matériau ferromagnétique, une couche supérieure 101 a et une couche inférieure 101 b. Cette partie mobile 10 est montée rotative sur un axe de rotation horizontal perpendiculaire à l'axe longitudinal de l'ouverture centrale de l'armature 110.The moving part 10 of the magnetic circuit has, for example, a symmetrical H-shaped shape comprising, for example, a permanent magnet 100 sandwiched between two parallel layers 101a, 101b made of ferromagnetic material, an upper layer 101a and a lower layer 101b. This movable portion 10 is rotatably mounted on a horizontal axis of rotation perpendicular to the longitudinal axis of the central opening of the armature 110.

La partie fixe du circuit magnétique est réalisée dans un matériau de forte perméabilité magnétique tel qu'un matériau ferromagnétique. En référence à la figure 7, la partie fixe comporte une embase 120 en forme de U enjambant la bobine d'excitation 11. La partie fixe du circuit magnétique comporte également un premier bras 121 et un second bras 122 distincts, non jointifs et non identiques, l'un des bras étant le reflet de l'autre dans un miroir. Le premier bras 121 est relié à la première extrémité de l'embase 120 tandis que le second bras 122 est relié à la seconde extrémité de l'embase 120. Ces deux bras 121, 122 sont en forme de L et traversent distinctement l'ouverture centrale de l'armature 110 suivant deux plans parallèles à l'axe longitudinal de l'ouverture centrale de la bobine 11. Les deuxièmes extrémités de chacun des bras 121, 122 sont positionnées de part et d'autre de l'aimant permanent 100 de la partie mobile 10 et entre les deux couches ferromagnétiques 101 a, 101 b de la partie mobile 10. Chaque bras 121, 122 forme une butée pour la partie mobile 10 et définit deux plages d'appui opposées, une plage d'appui supérieure et une plage d'appui inférieure. La partie mobile 10 présente un degré de liberté en rotation entre les butées formées par chacun des bras 121, 122.The fixed part of the magnetic circuit is made of a material of high magnetic permeability such as a ferromagnetic material. With reference to the figure 7 , the fixed part comprises a U-shaped base 120 spanning the excitation coil 11. The fixed part of the magnetic circuit also comprises a first arm 121 and a second arm 122 distinct, non-contiguous and non-identical, one of the arms being the reflection of the other in a mirror. The first arm 121 is connected to the first end of the base 120 while the second arm 122 is connected to the second end of the base 120. These two arms 121, 122 are L-shaped and distinctly pass through the opening central of the armature 110 in two planes parallel to the longitudinal axis of the central opening of the coil 11. The second ends of each of the arms 121, 122 are positioned on either side of the permanent magnet 100 of the movable part 10 and between the two ferromagnetic layers 101a, 101b of the movable part 10. Each arm 121, 122 forms a stop for the movable part 10 and defines two opposite bearing surfaces, an upper bearing area and a lower bearing area. The movable portion 10 has a degree of freedom in rotation between the stops formed by each of the arms 121, 122.

Comme l'embase 120 est agencée pour être positionnée de part et d'autre de la bobine 11, le champ magnétique circulant dans les bras 121, 122 traverse toujours l'ouverture centrale de la bobine 11 dans le même sens. En conséquence, le champ magnétique traverse l'ouverture centrale de la bobine d'excitation 11 deux fois dans le même sens.As the base 120 is arranged to be positioned on either side of the coil 11, the magnetic field flowing in the arms 121, 122 always passes through. the central opening of the coil 11 in the same direction. As a result, the magnetic field passes through the central opening of the excitation coil 11 twice in the same direction.

En référence aux figures 8A et 8B, on peut voir que la partie mobile 10 effectue un mouvement de balancier autour de son axe et peut prendre deux positions extrêmes distinctes définies par les butées, dans chacune desquelles la partie mobile 10 est retenue par des forces magnétiques. Lorsque la partie mobile 10 est décollée de l'une de ses positions extrêmes et déplacée au-delà d'une position d'équilibre centrale, elle est instantanément attirée par effet magnétique vers l'autre position extrême. Ce phénomène est notamment décrit dans la demande de brevet antérieure GB 1 312 927 .With reference to Figures 8A and 8B it can be seen that the movable portion 10 performs a rocking movement about its axis and can take two distinct end positions defined by the stops, in each of which the movable portion 10 is retained by magnetic forces. When the moving part 10 is detached from one of its extreme positions and moved beyond a central equilibrium position, it is instantly attracted by magnetic effect to the other end position. This phenomenon is described in particular in the previous patent application GB 1,312,927 .

Selon l'invention, le générateur 1 d'énergie est logé dans le boîtier 30 et coopère mécaniquement avec la tête de commande 20 via une pièce de liaison 4 mobile actionnable en translation par la tête de commande 20. Cette pièce de liaison 4 est logée dans le boîtier 30 et permet de convertir le mouvement de la tête de commande 20 entre ses deux positions en un mouvement de la partie mobile 10 du générateur 1 entre ses deux positions. Comme l'ouverture 302 réalisée à travers le dispositif de l'invention doit être dégagée pour le passage du bouton-poussoir 2, le générateur d'énergie est déporté par rapport à l'axe de commande (X).According to the invention, the energy generator 1 is housed in the housing 30 and cooperates mechanically with the control head 20 via a movable connecting piece 4 operable in translation by the control head 20. This connecting piece 4 is housed in the housing 30 and converts the movement of the control head 20 between its two positions in a movement of the movable portion 10 of the generator 1 between its two positions. As the opening 302 made through the device of the invention must be disengaged for the passage of the push button 2, the energy generator is offset relative to the control axis (X).

Le dispositif comporte également au moins une carte électronique 5 (figure 3) comprenant un émetteur sans-fil, un dispositif d'accumulation de l'énergie électrique générée par le générateur 1 et une antenne associée à l'émetteur sans-fil. L'émetteur sans-fil est par exemple de type radiofréquence et est alimenté par le courant produit par le générateur 1 via le dispositif d'accumulation d'énergie. A l'aide de l'antenne, il permet d'envoyer un message vers un récepteur distant (non représenté) qui comporte une antenne correspondante lui permettant de recevoir le message. Le protocole de communication sans fil utilisé entre l'émetteur et le récepteur sera par exemple ZIGBEE. En variante de réalisation, l'émetteur peut être de type infrarouge. Selon l'invention, l'envoi d'un message est commandé par le mouvement de la tête de commande 20. Le message pourra comporter plusieurs trames successives identiques et comportera notamment un identifiant unique du bouton-poussoir permettant au récepteur d'identifier le bouton-poussoir qui a été actionné. Le récepteur comportera par exemple une table répertoriant tous les boutons-poussoirs avec lesquels il est apparié et l'état de chacun de ces boutons-poussoirs.The device also comprises at least one electronic card 5 ( figure 3 ) comprising a wireless transmitter, a device for accumulating the electrical energy generated by the generator 1 and an antenna associated with the wireless transmitter. The wireless transmitter is for example radiofrequency type and is powered by the current produced by the generator 1 via the energy storage device. Using the antenna, it sends a message to a remote receiver (not shown) which has a corresponding antenna to receive the message. The wireless communication protocol used between the transmitter and the receiver will be for example ZIGBEE. In an alternative embodiment, the transmitter may be of the infrared type. According to the invention, the sending of a message is controlled by the movement of the control head 20. The message may comprise several identical successive frames and include in particular a unique identifier of the push button allowing the receiver to identify the button. -picker that has been operated. The receiver will include, for example, a table listing all the pushbuttons with which it is paired and the state of each of these pushbuttons.

Le passage de la partie mobile 10 du générateur 1 d'une première position à une deuxième position permet de générer une première quantité d'énergie sous la forme d'une première tension exploitable en aval par la carte électronique 5. Selon l'électronique implantée sur la carte, il est également possible de générer une deuxième quantité d'énergie, sous la forme d'une deuxième tension, lors du passage de la partie mobile 10 du générateur 1 de sa deuxième position à sa première position. La première quantité d'énergie et la deuxième quantité d'énergie générées lors d'un aller et retour de la partie mobile 10 du générateur 1 peuvent chacune être employées par la carte électronique 5 pour l'envoi d'un message distinct. Lorsque la partie mobile 10 du générateur 1 effectue un aller et un retour, les deux tensions générées sont en effet de signes opposés, la première tension étant par exemple positive et la deuxième tension négative, ce qui permet à la carte électronique de distinguer s'il s'agit d'un enfoncement ou d'un relâchement de la tête de commande 20 du bouton-poussoir 2 et d'envoyer deux messages différents pour chacune des actions.The passage of the mobile part 10 of the generator 1 from a first position to a second position makes it possible to generate a first quantity of energy in the form of a first voltage that can be exploited downstream by the electronic card 5. According to the implanted electronics on the card, it is also possible to generate a second quantity of energy, in the form of a second voltage, during the passage of the mobile part 10 of the generator 1 from its second position to its first position. The first amount of energy and the second amount of energy generated during a round trip of the mobile part 10 of the generator 1 can each be used by the electronic card 5 to send a separate message. When the moving part 10 of the generator 1 makes a go and a return, the two voltages generated are in fact of opposite signs, the first voltage being for example positive and the second negative voltage, which allows the electronic card to distinguish it. it is a depression or a release of the control head 20 of the push button 2 and send two different messages for each of the actions.

La pièce de liaison 4 comporte un anneau 40 réalisé autour de l'axe (X) et est agencée pour pouvoir coulisser suivant l'axe (X) entre la tubulure 303 réalisée sur la base 300 du boîtier 30 et la surface interne du capot 301 du boîtier 30. La pièce de liaison 4 est actionnable en translation suivant l'axe de commande (X) entre une position relâchée et une position enfoncée et est sollicitée dans son mouvement par un ou plusieurs ressorts 60, 61 (deux ressorts sur la figure 4) venant s'appliquer contre la base 300 du boîtier 30 du dispositif. La pièce de liaison 4 comporte également une patte 41 s'étendant parallèlement à l'axe de commande (X), ladite patte 41 présentant une ouverture oblongue 42 s'étendant en longueur parallèlement à l'axe de commande (X). La partie mobile 10 du générateur 1 coopère mécaniquement avec la pièce de liaison grâce à un ergot 102 traversant l'ouverture oblongue 42, l'ouverture oblongue 42 formant alors une came et l'ergot 102 un suiveur de came. Le dispositif comporte un ressort 62 (figures 3, 5 et 6) monté entre la patte 41 de la pièce de liaison 4 et la partie mobile 10 du générateur 1. La pièce de liaison 4 coopère donc mécaniquement avec la partie mobile 10 du générateur 1 par l'intermédiaire du ressort 62 et par l'intermédiaire de l'ensemble formé par l'ergot 102 et l'ouverture oblongue 42.The connecting piece 4 comprises a ring 40 made around the axis (X) and is arranged to slide along the axis (X) between the tubing 303 made on the base 300 of the housing 30 and the inner surface of the cover 301. of the housing 30. The connecting piece 4 is operable in translation along the control axis (X) between a relaxed position and a depressed position and is urged in its movement by one or more springs 60, 61 (two springs on the figure 4 ) coming against the base 300 of the housing 30 of the device. The connecting piece 4 also comprises a tab 41 extending parallel to the control axis (X), said tab 41 having an oblong opening 42 extending in length parallel to the control axis (X). The movable portion 10 of the generator 1 mechanically cooperates with the connecting piece through a lug 102 passing through the oblong opening 42, the oblong opening 42 then forming a cam and the lug 102 a cam follower. The device comprises a spring 62 ( figures 3 , 5 and 6 ) mounted between the lug 41 of the connecting piece 4 and the mobile part 10 of the generator 1. The connecting piece 4 thus mechanically cooperates with the mobile part 10 of the generator 1 via the spring 62 and through the assembly formed by the lug 102 and the oblong opening 42.

Le fonctionnement du dispositif de détection de l'invention monté sur un bouton-poussoir 2 de type arrêt d'urgence est le suivant :

  • Initialement, la tête de commande 20 de l'arrêt d'urgence est en position relâchée, c'est-à-dire de repos, et la partie mobile du générateur d'énergie est en première position, maintenue dans cette première position par l'effet magnétique (figure 5).
  • Lorsque le processus doit être arrêté en urgence, la tête de commande 20 de l'arrêt d'urgence est enfoncée par l'opérateur.
  • L'enfoncement de la tête de commande 20 de l'arrêt d'urgence entraîne non seulement l'arrêt du processus mais aussi le déplacement de la pièce de liaison 4 vers l'intérieur du boîtier 30 du dispositif 3 de détection et de signalement. La translation de la pièce de liaison 4 entraîne la compression du ressort 62 qui emmagasine alors de l'énergie mécanique. La seule force mécanique exercée n'est cependant pas suffisante pour décoller la partie mobile 10 de sa position. Lors de la translation de la pièce de liaison 4, l'ouverture oblongue 42 glisse par rapport à l'ergot 102.
  • En poursuivant la translation, l'extrémité de l'ouverture oblongue entre en contact avec l'ergot 102 et appuie sur la partie mobile 10 pour la décoller de sa première position. Lorsque la partie mobile est décollée suffisamment, la mise en rotation rapide de la partie mobile 10 vers sa deuxième position est assurée grâce à l'énergie mécanique emmagasinée par le ressort 62.
  • Le mouvement de la partie mobile 10 du générateur 1 génère une quantité d'énergie exploitable par la carte électronique 5 pour envoyer un message vers le récepteur. Le récepteur qui reçoit le message connaît alors l'identifiant du bouton-poussoir 2 qui a été enfoncé et peut mémoriser le changement d'état de ce bouton-poussoir 2.
  • Tant que la tête de commande 20 du bouton-poussoir 2 est maintenue en position enfoncée, ce qui est souvent le cas d'un arrêt d'urgence, la partie mobile 10 du générateur 1 reste dans sa deuxième position.
  • Lorsque la tête de commande 20 est ramenée dans sa position de repos, les ressorts 60, 61 ramènent la pièce de liaison 4 en position relâchée, entraînant la patte 41 de la pièce de liaison 4. Lorsque l'ouverture oblongue 42 entre de nouveau en contact avec l'ergot 102 de la partie mobile 10, la partie mobile 10 est alors décollée de sa deuxième position. La mise en rotation rapide de la partie mobile 10 vers sa première position est alors assurée par les ressorts 60, 61. La quantité d'énergie générée lors du retour peut être exploitée pour envoyer un nouveau message vers le récepteur afin de lui indiquer le retour en position de repos de la tête de commande 20. Le récepteur peut alors mémoriser le nouvel état du bouton.
The operation of the detection device of the invention mounted on a push button 2 of the emergency stop type is as follows:
  • Initially, the control head 20 of the emergency stop is in the relaxed position, that is to say rest, and the moving part of the energy generator is in first position, maintained in this first position by the magnetic effect ( figure 5 ).
  • When the process is to be stopped urgently, the control head 20 of the emergency stop is depressed by the operator.
  • Depression of the control head 20 of the emergency stop not only causes the process to stop, but also the displacement of the connecting piece 4 towards the inside of the housing 30 of the detection and signaling device 3. The translation of the connecting piece 4 causes compression of the spring 62 which then stores mechanical energy. The only mechanical force exerted is however not sufficient to take off the moving part 10 from its position. During the translation of the connecting piece 4, the oblong opening 42 slides relative to the lug 102.
  • Continuing the translation, the end of the oblong opening comes into contact with the lug 102 and presses the movable portion 10 to take off from its first position. When the movable part is peeled off sufficiently, the rapid rotation of the moving part 10 towards its second position is ensured thanks to the mechanical energy stored by the spring 62.
  • The movement of the mobile part 10 of the generator 1 generates a quantity of energy usable by the electronic card 5 to send a message to the receiver. The receiver receiving the message then knows the identifier of the push button 2 which has been pressed and can memorize the change of state of this push button 2.
  • As long as the control head 20 of the pushbutton 2 is held in the depressed position, which is often the case of an emergency stop, the mobile part 10 of the generator 1 remains in its second position.
  • When the control head 20 is returned to its rest position, the springs 60, 61 return the connecting piece 4 in the released position, causing the tab 41 of the connecting piece 4. When the oblong opening 42 enters again into contact with the lug 102 of the movable portion 10, the movable portion 10 is then detached from its second position. The rapid rotation of the moving part 10 to its first position is then ensured by the springs 60, 61. The amount of energy generated during the return can be exploited to send a new message to the receiver to indicate the return to the rest position of the control head 20. The receiver can then store the new state of the button.

L'invention sera particulièrement utilisée pour détecter le changement d'état de boutons-poussoirs de type arrêt d'urgence montés en série le long d'un processus à commander. Si le nombre de ces arrêts d'urgence est important, le dispositif 3 de détection et de signalement de l'invention permettra de connaître quel arrêt d'urgence a été actionné.The invention will be particularly used to detect the change of state of emergency stop type pushbuttons connected in series along a process to be controlled. If the number of these emergency stops is important, the device 3 for detection and reporting of the invention will know which emergency stop has been activated.

Claims (14)

  1. Device for detecting and signalling the change of state of a push-button (2), the said push-button comprising a body (21), and a control head (20) mounted on the body and actuable in translation along a principal axis (X) between a plurality of positions so as to impart different states to the push-button in order to control an electrical circuit, the device being in the form of an attachment which can be removed from the push-button (2) and comprising an electrical energy generator (1) housed in the casing (30) and adapted to cooperate with the control head (20) in order to convert mechanical energy into electrical energy, characterized in that the device comprises:
    - a casing (30) through which an opening (302) is formed, the body (21) of the push-button (2) being intended to pass through this opening,
    - a wireless transmitter for sending a message to a remote receiver, the said wireless transmitter being housed in the casing (30) and electrically connected to the electrical energy generator (1).
  2. Device according to Claim 1, characterized in that the electrical energy generator (1) is of the electromagnetic type and comprises a magnetic circuit provided with a fixed part and a mobile part (10) and an electromagnetic coil (11) through which the magnetic circuit passes.
  3. Device according to Claim 2, characterized in that it comprises a connecting piece (4) cooperating with the electrical energy generator (1) and actuable in translation by the control head (20).
  4. Device according to Claim 3, characterized in that the connecting piece (4) comprises a ring (40) mounted on return spring means, coaxially with respect to the opening (302).
  5. Device according to Claim 4, characterized in that it comprises a spring (62) mounted between the connecting piece (4) and the mobile part (10) of the electrical energy generator (1).
  6. Device according to Claim 5, characterized in that the connecting piece (4) comprises a tab (41) integral with the ring (40), the said tab (41) having an oblong opening (42) through which a lug (102) formed on the mobile part (10) passes.
  7. Device according to one of Claims 2 to 6, characterized in that the mobile part (10) of the electrical energy generator (1) can move between a first position and a second position, and in that the energy generator (1) is arranged in order to generate a first amount of energy when the mobile part (10) passes from the first position to the second position and a second amount of energy when the mobile part (10) passes from the second position to the first position.
  8. Device according to one of Claims 1 to 7, characterized in that the device comprises an electronics board (5) housed in the casing (30) and comprising the wireless transmitter, the said wireless transmitter being electrically connected to the electrical energy generator (1).
  9. Device according to one of Claims 1 to 8, characterized in that the transmitter is a radiofrequency transmitter.
  10. Device according to one of Claims 1 to 8, characterized in that the transmitter is of the infrared type.
  11. Control assembly comprising a push-button (2) provided with a body (21), and a control head (20) mounted on the body and actuable in translation along a principal axis (X) between a plurality of positions so as to impart different states to the push-button, characterized in that the control assembly also comprises a device (3) for detecting and signalling the change of state of the push-button (2) as defined in one of Claims 1 to 10, the said device being fitted around the push-button (2) and arranged to cooperate mechanically with the control head (20).
  12. Control assembly according to Claim 11, characterized in that the wireless transmitter is arranged to send a first message when the control head (20) of the push-button is depressed and a second message when the control head (20) of the push-button is released.
  13. Control assembly according to Claim 11 or 12, characterized in that:
    - the control assembly comprises a contact unit (22) assembled on the body (21) of the push-button and adapted to be actuated by the control head (20),
    - the body of the push-button is mounted in an orifice formed through a wall (P), the control head (20) being located on the front side (AV) with respect to the wall (P) and the contact unit (22) on the rear side (AR) with respect to the wall (P),
    - the device (3) for detecting the change of state of the push-button (2) is mounted on the front side (AV) with respect to the wall (P) and arranged between the control head (20) and the wall (P).
  14. Control assembly according to one of Claims 11 to 13, characterized in that the push-button (2) is of the emergency stop type.
EP11737970.1A 2010-08-25 2011-08-01 Device for detection and signalliing of pushbutton's status change Not-in-force EP2609607B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1056741A FR2964241B1 (en) 2010-08-25 2010-08-25 DEVICE FOR DETECTING AND REPORTING THE CHANGE OF STATUS OF A PUSH BUTTON
PCT/EP2011/063185 WO2012025335A1 (en) 2010-08-25 2011-08-01 Device for detecting and signaling a change in the state of a push button

Publications (2)

Publication Number Publication Date
EP2609607A1 EP2609607A1 (en) 2013-07-03
EP2609607B1 true EP2609607B1 (en) 2014-12-31

Family

ID=43743528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11737970.1A Not-in-force EP2609607B1 (en) 2010-08-25 2011-08-01 Device for detection and signalliing of pushbutton's status change

Country Status (10)

Country Link
US (1) US9390874B2 (en)
EP (1) EP2609607B1 (en)
JP (1) JP5502241B2 (en)
CN (1) CN103069522B (en)
AU (1) AU2011295275B2 (en)
BR (1) BR112013004267A2 (en)
CA (1) CA2807067C (en)
FR (1) FR2964241B1 (en)
MX (1) MX2013001479A (en)
WO (1) WO2012025335A1 (en)

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Also Published As

Publication number Publication date
JP5502241B2 (en) 2014-05-28
JP2013536553A (en) 2013-09-19
BR112013004267A2 (en) 2016-08-02
FR2964241B1 (en) 2012-08-17
FR2964241A1 (en) 2012-03-02
US20130134798A1 (en) 2013-05-30
CN103069522B (en) 2016-08-10
CA2807067A1 (en) 2012-03-01
WO2012025335A1 (en) 2012-03-01
EP2609607A1 (en) 2013-07-03
CN103069522A (en) 2013-04-24
AU2011295275A1 (en) 2013-03-14
US9390874B2 (en) 2016-07-12
CA2807067C (en) 2015-12-29
AU2011295275B2 (en) 2014-05-15
MX2013001479A (en) 2013-03-18

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