EP3651173A1 - Switching assembly with secure attaching solution for emergency stop device - Google Patents

Switching assembly with secure attaching solution for emergency stop device Download PDF

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Publication number
EP3651173A1
EP3651173A1 EP19204028.5A EP19204028A EP3651173A1 EP 3651173 A1 EP3651173 A1 EP 3651173A1 EP 19204028 A EP19204028 A EP 19204028A EP 3651173 A1 EP3651173 A1 EP 3651173A1
Authority
EP
European Patent Office
Prior art keywords
contact
movable
control
bridge
switching assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19204028.5A
Other languages
German (de)
French (fr)
Other versions
EP3651173B1 (en
Inventor
Patrice Thizon
Eric Perard
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 EP3651173A1 publication Critical patent/EP3651173A1/en
Application granted granted Critical
Publication of EP3651173B1 publication Critical patent/EP3651173B1/en
Active 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
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/68—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having two operating members, one for opening and one for closing the same set of contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • 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
    • 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
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/20—Driving mechanisms
    • 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
    • H01H13/04—Cases; Covers
    • 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
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • 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
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/503—Stacked switches
    • 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
    • H01H3/0253—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch two co-operating contacts actuated independently
    • 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"
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/01—Spiral spring

Definitions

  • the present invention relates to a switching assembly.
  • the invention relates more particularly to a switching assembly intended to be assembled on a control assembly to form a switching device of the emergency stop type.
  • an emergency stop device comprises a control assembly carrying an actuating member and a switching assembly also called a contact block intended to be mounted at the rear of the control assembly.
  • the switching assembly comprises at least one main movable bridge supporting movable contacts actuated by the actuating member with respect to fixed contacts from a closed position to an open position to open an electrical circuit in the event of 'emergency.
  • the main contacts are therefore of the normally closed type.
  • the control assembly and the switching assembly are often mechanically mounted on either side of a wall.
  • the switching assembly is therefore invisible to the user. It is therefore impossible for the user to know permanently whether the control assembly is correctly mounted on the switching assembly. However, a dropout of one of the assemblies relative to the other no longer allows the device to function correctly. Since an emergency stop device is intended to perform a safety function, it is necessary that this device function properly. For this, it is therefore necessary to ensure that the switching assembly is properly hooked to the control assembly when the emergency stop device is brought to operate.
  • the switching assembly uses two nested pushers and a movable support with two independent connection plates, each carrying a movable control contact intended to cooperate with a fixed contact of the switching assembly and a detection contact. It also includes a movable bridge carrying two movable detection contacts intended to come into contact with the detection contacts of the connection plates to establish an electrical connection between the two connection plates when the operational attachment of the control and the switching assembly is completed.
  • the object of the invention is to propose a new solution making it possible to ensure that the control assembly is correctly mounted on the switching assembly. This solution is simple to operate and is carried out in a limited space.
  • the first movable contact bridge is movable in translation along a control axis between a first closed position and a second open position and its first movable control contact is able to be in contact with the first fixed contact in the first closed position and away from the first fixed contact in the second open position.
  • the second movable contact bridge is movable in translation along said control axis between a first open position and a second closed position and its first movable monitoring contact is able to be distant from the second fixed contact in the first open position and to be in contact with the second fixed contact in the second closed position.
  • the second mobile monitoring contact and the second mobile control contact are arranged to be in contact when the first mobile contact bridge is in its first closed position and the second mobile contact bridge is in its second position closing.
  • the first movable contact bridge is able to move in translation along said control axis in a first direction and, from its open position to its position closing, the second movable contact bridge moves along said control axis, in a second direction which is opposite to said first direction.
  • the switching assembly comprises a first stop produced on the body and arranged to cooperate with the first movable contact bridge in its first closed position, this first stop being positioned off-axis relative to the axis of median translation of the first movable contact bridge and opposite its first movable control contact relative to said axis.
  • the switching assembly comprises a second stop produced on the housing and arranged to cooperate with the second movable contact bridge in its first closed position, this second stop being positioned off-axis relative to the axis of median translation of the second bridge (41) of mobile contact and opposite to its first mobile monitoring contact (42a) relative to said axis.
  • the first movable contact bridge is mounted in slide connection on the control pusher and the switching assembly comprises a first contact pressure spring arranged between the control pusher and the first movable contact bridge.
  • the switching assembly comprises a closing spring arranged between the body and the control pusher.
  • the second movable contact bridge is mounted in slide connection on the monitoring pusher and the switching assembly comprises a second contact pressure spring arranged between the monitoring pusher and the second movable contact bridge.
  • the switching assembly comprises an opening spring arranged between the body and the monitoring plunger.
  • the invention also relates to a switching device comprising a control assembly comprising an actuating member capable of assuming a rest position and an actuating position, said switching device comprising a switching assembly as defined above.
  • an emergency stop type device also called a punch switch, comprises two separate sets 1, 2 formed by a control assembly, also designated first assembly 1, and by a switching assembly, designated also second set 2.
  • the first set 1 (visible on the figure 5 ) comprises an actuating member 10 intended to be pressed in an emergency by the operator along a control axis (X) to open an electrical circuit.
  • the actuating member 10 can thus take a rest position, in which it is not depressed, leaving the electrical circuit closed and an actuation position in which it is depressed to open the electrical circuit.
  • the second set 2 is a contact block for controlling the electrical circuit. This is represented on the Figures 1A to 5 attached.
  • This second assembly 2 comprises a body or housing 20, for example of plastic, comprising attachment means 21a, 21b to the first assembly 1.
  • the second assembly 2 comprises a control switch making it possible to control the circuit electric according to the position of the actuating member 10. It also includes a monitoring switch making it possible to monitor that the second set 2 is securely attached to the first set 1 while keeping the electrical circuit open as long as the first set 1 is disconnected mechanically from the second set 2.
  • the second assembly 2 comprises a first contact terminal 22a and a second contact terminal 22b. It comprises a first fixed contact 23a electrically connected to its first terminal 22a and a second fixed contact 23b electrically connected to its second terminal 22b.
  • the two terminals are for example conventional screw terminals.
  • the control switch comprises a control pusher 30 which can be actuated in translation along the axis (X) and a first bridge 31 of mobile contacts carrying a first set of two so-called mobile control contacts 32a, 32b, said bridge 31 being mounted in connection slide on the control pusher 30. It also includes a contact pressure spring R1 mounted between a stop 33 of the pusher 30 and the first bridge 31 of movable contact. It also includes a closing spring R2 mounted in a housing along the axis (X) between the control button 30 and the body 20 of the switching assembly 2. The closing spring R2 and the contact pressure spring R1 are of helical type and have their axis oriented along the axis (X).
  • the surveillance switch comprises a surveillance pusher 40 which can be actuated in translation along the axis (X) and a second bridge 41 of mobile contacts carrying a second set of two so-called surveillance mobile contacts 42a, 42b, said second bridge 41 of mobile contacts being mounted in slide connection on the monitoring plunger.
  • It comprises a contact pressure spring R3 mounted along the axis (X) between a stop 43 of the monitoring plunger 40 and the bridge 41 of movable contacts.
  • It also includes an opening spring R4 mounted in a housing along the axis (X) between the monitoring plunger 40 and the body 20 of the switching assembly.
  • the contact pressure spring R3 and the opening spring R4 are of the helical type and have their axis oriented along the axis (X).
  • the first movable contact bridge 31 is movable in translation between a first closed position and a second open position. It carries a first movable control contact 32a arranged to cooperate with the first fixed contact 23a and a second movable control contact 32b.
  • the second movable contact bridge 41 is also movable in translation between a first open position and a second closed position. It carries a first mobile monitoring contact 42a arranged to cooperate with the second fixed contact 23b and a second mobile monitoring contact 42b.
  • the first bridge 31 of movable contacts and the second bridge 41 of movable contacts are made of metallic material and allow an electrical connection to be made between their two movable contacts.
  • the solution of the invention has the particularity that the second mobile control contact 32b is arranged to cooperate with the second mobile monitoring contact 42b.
  • the second mobile control contact 32b and the second mobile monitoring contact 42b are in contact, thus closing the electrical circuit.
  • the cooperation of the two mobile contacts requires reverse actuation of the first bridge 31 of mobile contacts and of the second bridge 41 of mobile contacts.
  • the first movable contact bridge 31 moves along the axis (X) in one direction and, from its open position to its closed position, the second bridge 41 of movable contacts moves along the axis (X), but in the opposite direction.
  • the first fixed contact 23a and the second fixed contact 23b each have their contact face oriented in opposite directions to cooperate each with the first mobile control contact 32a and with the first mobile monitoring contact 42a respectively.
  • the second assembly 2 also includes a first stop 34 produced on the body 20 and arranged to cooperate with the first bridge 31 of movable contacts.
  • This first stop 34 is positioned offset from the median translation axis of the first movable contact bridge 31 and opposite its first movable control contact 32a relative to this axis, so as to maintain the bridge 31 in its axis when it is in the closed position and the second bridge 41 of movable contacts is then in the open position.
  • the second assembly 2 comprises a second stop 44 produced on the body 20 and arranged to cooperate with the second 41 movable contact bridge.
  • This second stop 44 makes it possible to block the second bridge 41 of contacts movable in translation when the latter comes into its closed position.
  • This second stop 44 is positioned offset from the median translation axis of the second movable contact bridge 41 and opposite its first movable monitoring contact 42a relative to said axis, so as to maintain the bridge 41 in its axis when it is in the closed position and to avoid coming off-center the contact established between the second mobile control contact 32b and the second mobile monitoring contact 42b.
  • the switching assembly 2 and the control assembly 1 are separated.
  • the control button 30 is in its closed position and the monitoring button 40 is in its open position.
  • the head of the monitoring pusher 40 is offset upwards relative to the head of the control pusher 30.
  • the first mobile monitoring contact 42a of the second mobile contact bridge 41 is therefore not connected to the second fixed contact 23b and its second mobile monitoring contact 42b is not connected to the second mobile control contact 32b of the first bridge 31 of mobile contacts.
  • the electrical circuit is therefore open.
  • the control pusher 30 bears against a stop 35 of the housing 20 and the first bridge 31 of movable contacts is pressed against the first stop 34 defined above, making it possible to stress the contact pressure spring R1 arranged between the first movable contact bridge 31 and the control pusher 30.
  • the first stop 34 can be positioned on the housing to allow a slight rotation of the first movable contact bridge 31 clockwise .
  • the control assembly 1 (not shown) is hooked to the switching assembly 2.
  • the attachment causes the monitoring pusher 40 to translate from its open position to its closed position and forms an upper upper stop for the monitoring pusher 40.
  • the first mobile monitoring contact 42a comes into contact with the second fixed contact 23b and the second mobile monitoring contact 42b comes into contact with the second mobile control contact 32b.
  • the opening spring R4 is thus stressed in compression during the translation of the monitoring plunger 40.
  • the contact pressure spring R3 is also stressed in compression, making it possible to apply a contact pressure of the first movable monitoring contact 42a against the second fixed contact 23b and the second bridge 41 of movable contacts against the second stop 44.
  • a translation of the control pusher 30 also occurs, releasing it from its stop 35, this translation being absorbed by the closing spring R2.
  • the first movable contact bridge 31 remains in its closed position under the action of the contact pressure spring R1.
  • the second stop 44 is positioned to maintain a sufficient contact pressure between the second mobile monitoring contact 42b and the second mobile control contact 32b when the two bridges 31, 41 are in the closed position.
  • each contact pressure spring R1, R3 at these two movable contacts 32b, 42b makes it possible to compensate for the slight rotation of the first bridge 31 of movable contacts (slight rotation present in the absence of the control unit - see above) and replace it in the axis.
  • the electrical circuit is therefore closed and the switching device formed by assembling the control assembly 1 on the switching assembly 2 is operational.
  • the actuator 10 that is to say the head of the emergency stop, is actuated.
  • the actuating member 10 forms a lower upper stop for the two pushers,
  • the actuation of the head therefore causes both the translation of the control pusher 30 and the translation of the monitoring pusher 40.
  • the second bridge 41 of movable contacts being in the closed position and locked in translation by the second stop 44, the latter cannot translate.
  • the translation of the monitoring plunger 40 is therefore absorbed by the opening spring R4 and by the contact pressure spring R3.
  • the control pusher 30 In its translational movement, the control pusher 30 causes, thanks to a stop 36 made on its rod, the translation of the first bridge 31 of movable contacts from its closed position to its open position.
  • the translation of the control pusher 30 is allowed by compression of the closing spring R2, causing the release of the contact pressure spring R1 and the ascent of the first movable contact bridge 31 against said stop 36.
  • the first movable control contact 32a is then removed from the first fixed contact 23a and the second movable control contact 32b is removed from the second movable monitoring contact 42b, thus opening the electrical circuit.
  • This figure 5 illustrates the operation of the invention when the control assembly 1 is found to be poorly attached to the switching assembly 2.
  • the monitoring pusher 40 can thus be in an intermediate position situated between its position corresponding to the non-hooked control assembly 1 ( Figures 2A to 2C ) and its position corresponding to the operationally attached control assembly 1 ( Figures 3A to 3C ).
  • this intermediate position the translation of the monitoring plunger 40 is allowed by compression of the opening spring R4 but it is insufficient to drive the second bridge 41 of movable contacts to its closed position.
  • the electrical circuit then remains open, as long as the mechanical coupling is not correctly carried out between the two assemblies, which guarantees a high level of security.
  • the device In the event of complete ejection of the control assembly 1 relative to the switching assembly, that is to say in the event of complete detachment of the head, the device automatically returns to the first operating state described here. -above. In this situation, as the control assembly is no longer attached to the switching assembly at all, the monitoring plunger 40 returns to its initial position, urged by the two springs R3 and R4.
  • the main switching assembly 2 when the switching device is provided with several adjacent switching assemblies, the so-called main switching assembly, corresponding to that of the invention described above, can be provided with mechanical means capable of acting on each adjacent switching assembly to ensure their operational mechanical latching. It is thus a matter of securing the attachment of at least one other switching assembly using the main switching assembly, the attachment of which is already monitored using the solution of the invention described above.
  • the main switching assembly 2 therefore makes it possible to secure the assembly of one or two auxiliary switching assemblies on the control assembly 1.
  • each auxiliary switching assembly must be positioned adjacent to it. to the main switching assembly 2. If the device comprises two auxiliary switching assemblies, these assemblies must be positioned on either side of the main switching assembly 2.
  • These mechanical securing means may include a projecting part made on the housing 20 of the assembly and cooperating with a rear face of the adjacent auxiliary switching assembly when the main switching assembly 2 is mechanically hooked on the control assembly 1.
  • This projecting part may consist of a fin 220 made perpendicular to the main axis. It is visible in the attached figures.

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Abstract

L'invention concerne un ensemble de commutation (2) destiné à être assemblé sur un ensemble de commande (1) doté d'un organe d'actionnement (10), ledit ensemble de commutation comportant un corps (20), un circuit électrique comportant deux contacts fixe (23a, 23b), ledit circuit électrique étant commandable à la fois par un commutateur de commande de type normalement fermé et par un commutateur de surveillance de type normalement ouvert, relié en série avec ledit commutateur de commande. Le commutateur de surveillance permet de surveiller que l'ensemble de commutation (2) est bien accroché sur l'ensemble de commande (1) en maintenant le circuit électrique ouvert tant que l'ensemble de commande (1) est déconnecté mécaniquement de l'ensemble de commutation (2).The invention relates to a switching assembly (2) intended to be assembled on a control assembly (1) provided with an actuating member (10), said switching assembly comprising a body (20), an electrical circuit comprising two fixed contacts (23a, 23b), said electrical circuit being controllable both by a normally closed type control switch and by a normally open type monitoring switch, connected in series with said control switch. The monitoring switch makes it possible to monitor that the switching assembly (2) is properly hooked to the control assembly (1) by keeping the electrical circuit open as long as the control assembly (1) is mechanically disconnected from the switching assembly (2).

Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention se rapporte à un ensemble de commutation. L'invention concerne plus particulièrement un ensemble de commutation destiné à être assemblé sur un ensemble de commande pour former un dispositif de commutation de type arrêt d'urgence.The present invention relates to a switching assembly. The invention relates more particularly to a switching assembly intended to be assembled on a control assembly to form a switching device of the emergency stop type.

Etat de la techniqueState of the art

En règle générale, un dispositif d'arrêt d'urgence comporte un ensemble de commande portant un organe d'actionnement et un ensemble de commutation appelé également bloc de contacts destiné à être monté à l'arrière de l'ensemble de commande. L'ensemble de commutation comporte au moins un pont mobile principal supportant des contacts mobiles actionnés par l'organe d'actionnement par rapport à des contacts fixes d'une position de fermeture vers une position d'ouverture pour ouvrir un circuit électrique en cas d'urgence. Dans un dispositif d'arrêt d'urgence, les contacts principaux sont donc de type normalement fermé.As a general rule, an emergency stop device comprises a control assembly carrying an actuating member and a switching assembly also called a contact block intended to be mounted at the rear of the control assembly. The switching assembly comprises at least one main movable bridge supporting movable contacts actuated by the actuating member with respect to fixed contacts from a closed position to an open position to open an electrical circuit in the event of 'emergency. In an emergency stop device, the main contacts are therefore of the normally closed type.

Lors du montage du dispositif, l'ensemble de commande et l'ensemble de commutation sont souvent montés mécaniquement de part et d'autre d'une paroi. L'ensemble de commutation est donc invisible à l'utilisateur. Il est donc impossible pour l'utilisateur de savoir en permanence si l'ensemble de commande est bien monté sur l'ensemble de commutation. Or un décrochage de l'un des ensembles par rapport à l'autre ne permet plus au dispositif de fonctionner correctement. Etant donné qu'un dispositif d'arrêt d'urgence est destiné à exercer une fonction de sécurité, il est nécessaire que ce dispositif fonctionne correctement. Pour cela, Il faut donc s'assurer que l'ensemble de commutation est bien accroché à l'ensemble de commande lorsque le dispositif d'arrêt d'urgence est amené à fonctionner.When mounting the device, the control assembly and the switching assembly are often mechanically mounted on either side of a wall. The switching assembly is therefore invisible to the user. It is therefore impossible for the user to know permanently whether the control assembly is correctly mounted on the switching assembly. However, a dropout of one of the assemblies relative to the other no longer allows the device to function correctly. Since an emergency stop device is intended to perform a safety function, it is necessary that this device function properly. For this, it is therefore necessary to ensure that the switching assembly is properly hooked to the control assembly when the emergency stop device is brought to operate.

Il est notamment connu des brevets US 6,198,058 et DE4101493 des dispositifs permettant de surveiller l'accrochage de l'ensemble de commande sur l'ensemble de commutation. Dans ces deux brevets, un jeu de contacts normalement fermés et un jeu de contacts normalement ouverts sont mis en série sur le circuit électrique à commander. Tant que l'ensemble de commutation est déconnecté mécaniquement de l'ensemble de commande, les contacts normalement ouverts restent ouverts et lors du montage de l'ensemble de commutation sur l'ensemble de commande, ces contacts normalement ouverts se ferment. En fonctionnement normal, lors d'une pression sur l'organe d'actionnement, les contacts normalement fermés s'ouvrent.It is known in particular from patents US 6,198,058 and DE4101493 devices for monitoring the attachment of the control assembly to the switching assembly. In these two patents, a set of normally closed contacts and a set of normally open contacts are placed in series on the electrical circuit to be controlled. As long as the switch assembly is mechanically disconnected from the control assembly, the normally open contacts remain open and when mounting the switch assembly on the control assembly, these contacts normally open close. In normal operation, when the actuator is pressed, the normally closed contacts open.

D'autres solutions permettant de résoudre le même problème technique sont également décrites dans les brevets EP2332158B1 et EP2564408B1 . Other solutions for solving the same technical problem are also described in the patents. EP2332158B1 and EP2564408B1 .

Dans ce dernier brevet EP2564408B1 , l'ensemble de commutation utilise deux poussoirs imbriqués et un support mobile à deux plaques de connexion indépendantes, portant chacune un contact mobile de commande destiné à coopérer avec un contact fixe de l'ensemble de commutation et un contact de détection. Il comporte également un pont mobile portant deux contacts mobiles de détection destinés à venir en contact avec les contacts de détection des plaques de connexion pour établir une liaison électrique entre les deux plaques de connexion lorsque l'accrochage opérationnel de l'ensemble de commande et de l'ensemble de commutation est réalisé.In this latest patent EP2564408B1 , the switching assembly uses two nested pushers and a movable support with two independent connection plates, each carrying a movable control contact intended to cooperate with a fixed contact of the switching assembly and a detection contact. It also includes a movable bridge carrying two movable detection contacts intended to come into contact with the detection contacts of the connection plates to establish an electrical connection between the two connection plates when the operational attachment of the control and the switching assembly is completed.

Le but de l'invention est de proposer une nouvelle solution permettant de s'assurer que l'ensemble de commande est bien monté sur l'ensemble de commutation. Cette solution est d'un fonctionnement simple et est réalisée dans un encombrement limité.The object of the invention is to propose a new solution making it possible to ensure that the control assembly is correctly mounted on the switching assembly. This solution is simple to operate and is carried out in a limited space.

Exposé de l'inventionStatement of the invention

Ce but est atteint par un ensemble de commutation destiné à être assemblé sur un ensemble de commande doté d'un organe d'actionnement pouvant prendre une position de repos et une position d'actionnement, ledit ensemble de commutation comportant :

  • Un corps, un circuit électrique comportant deux contacts fixe, ledit circuit électrique étant commandable à la fois par un commutateur de commande de type normalement fermé comportant un premier pont de contacts mobile portant un premier contact mobile de commande et un deuxième contact mobile de commande et par un commutateur de surveillance de type normalement ouvert, relié en série avec ledit commutateur de commande et comportant un deuxième pont de contacts mobile portant un premier contact mobile de surveillance et un deuxième contact mobile de surveillance,
  • Le premier contact mobile de commande étant agencé pour coopérer avec le premier contact fixe et le premier contact mobile de surveillance étant agencé pour coopérer avec le deuxième contact fixe,
  • Le deuxième contact mobile de commande étant agencé pour coopérer directement avec le deuxième contact mobile de surveillance.
This object is achieved by a switching assembly intended to be assembled on a control assembly provided with an actuating member capable of assuming a rest position and an actuating position, said switching assembly comprising:
  • A body, an electrical circuit comprising two fixed contacts, said electrical circuit being controllable at the same time by a normally closed type control switch comprising a first movable contact bridge carrying a first movable control contact and a second movable control contact and by a normally open type surveillance switch, connected in series with said control switch and comprising a second mobile contact bridge carrying a first mobile surveillance contact and a second mobile surveillance contact,
  • The first mobile control contact being arranged to cooperate with the first fixed contact and the first mobile monitoring contact being arranged to cooperate with the second fixed contact,
  • The second mobile control contact being arranged to cooperate directly with the second mobile monitoring contact.

Selon une particularité, le premier pont de contact mobile est déplaçable en translation suivant un axe de commande entre une première position de fermeture et une deuxième position d'ouverture et son premier contact mobile de commande est apte à être en contact avec le premier contact fixe dans la première position de fermeture et éloigné du premier contact fixe dans la deuxième position d'ouverture.According to one feature, the first movable contact bridge is movable in translation along a control axis between a first closed position and a second open position and its first movable control contact is able to be in contact with the first fixed contact in the first closed position and away from the first fixed contact in the second open position.

Selon une autre particularité, le deuxième pont de contact mobile est déplaçable en translation suivant ledit axe de commande entre une première position d'ouverture et une deuxième position de fermeture et son premier contact mobile de surveillance est apte à être éloigné du deuxième contact fixe dans la première position d'ouverture et à être en contact avec le deuxième contact fixe dans la deuxième position de fermeture.According to another particularity, the second movable contact bridge is movable in translation along said control axis between a first open position and a second closed position and its first movable monitoring contact is able to be distant from the second fixed contact in the first open position and to be in contact with the second fixed contact in the second closed position.

Selon une autre particularité, le deuxième contact mobile de surveillance et le deuxième contact mobile de commande sont agencés pour être en contact lorsque le premier pont de contact mobile est dans sa première position de fermeture et le deuxième pont de contact mobile est dans sa deuxième position de fermeture.According to another particular feature, the second mobile monitoring contact and the second mobile control contact are arranged to be in contact when the first mobile contact bridge is in its first closed position and the second mobile contact bridge is in its second position closing.

Selon une autre particularité, de sa position d'ouverture vers sa position de fermeture, le premier pont de contacts mobile est apte à se déplacer en translation suivant ledit axe de commande dans un premier sens et, de sa position d'ouverture vers sa position de fermeture, le deuxième pont de contacts mobile se déplace suivant ledit axe de commande, dans un deuxième sens qui est opposé audit premier sens.According to another particular feature, from its open position to its closed position, the first movable contact bridge is able to move in translation along said control axis in a first direction and, from its open position to its position closing, the second movable contact bridge moves along said control axis, in a second direction which is opposite to said first direction.

Selon une autre particularité, l'ensemble de commutation comporte une première butée réalisée sur le corps et agencée pour coopérer avec le premier pont de contacts mobile dans sa première position de fermeture, cette première butée étant positionnée de manière désaxée par rapport à l'axe de translation médian du premier pont de contact mobile et à l'opposé de son premier contact mobile de commande par rapport audit axe.According to another particularity, the switching assembly comprises a first stop produced on the body and arranged to cooperate with the first movable contact bridge in its first closed position, this first stop being positioned off-axis relative to the axis of median translation of the first movable contact bridge and opposite its first movable control contact relative to said axis.

Selon une autre particularité, l'ensemble de commutation comporte une deuxième butée réalisée sur le boîtier et agencée pour coopérer avec le deuxième pont de contacts mobile dans sa première position de fermeture, cette deuxième butée étant positionnée de manière désaxée par rapport à l'axe de translation médian du deuxième pont (41) de contact mobile et à l'opposé de son premier contact mobile de surveillance (42a) par rapport audit axe.According to another particular feature, the switching assembly comprises a second stop produced on the housing and arranged to cooperate with the second movable contact bridge in its first closed position, this second stop being positioned off-axis relative to the axis of median translation of the second bridge (41) of mobile contact and opposite to its first mobile monitoring contact (42a) relative to said axis.

Selon une autre particularité, le premier pont de contacts mobile est monté en liaison glissière sur le poussoir de commande et l'ensemble de commutation comporte un premier ressort de pression de contact agencé entre le poussoir de commande et le premier pont de contacts mobile.According to another particular feature, the first movable contact bridge is mounted in slide connection on the control pusher and the switching assembly comprises a first contact pressure spring arranged between the control pusher and the first movable contact bridge.

Selon une autre particularité, l'ensemble de commutation comporte un ressort de fermeture agencé entre le corps et le poussoir de commande.According to another particular feature, the switching assembly comprises a closing spring arranged between the body and the control pusher.

Selon une autre particularité, le deuxième pont de contacts mobile est monté en liaison glissière sur le poussoir de surveillance et l'ensemble de commutation comporte un deuxième ressort de pression de contact agencé entre le poussoir de surveillance et le deuxième pont de contacts mobile.According to another particular feature, the second movable contact bridge is mounted in slide connection on the monitoring pusher and the switching assembly comprises a second contact pressure spring arranged between the monitoring pusher and the second movable contact bridge.

Selon une autre particularité, l'ensemble de commutation comporte un ressort d'ouverture agencé entre le corps et le poussoir de surveillance.According to another particular feature, the switching assembly comprises an opening spring arranged between the body and the monitoring plunger.

L'invention concerne également un dispositif de commutation comprenant un ensemble de commande comportant un organe d'actionnement pouvant prendre une position de repos et une position d'actionnement, ledit dispositif de commutation comportant un ensemble de commutation tel que défini ci-dessus.The invention also relates to a switching device comprising a control assembly comprising an actuating member capable of assuming a rest position and an actuating position, said switching device comprising a switching assembly as defined above.

Brève description des figuresBrief description of the figures

D'autres caractéristiques et avantages vont apparaître dans la description détaillée qui suit, faite en regard des dessins annexés dans lesquels :

  • Les figures 1A et 1B représentent, sous deux angles de vue différents et en éclaté partiel, la partie interne de l'ensemble de commutation de l'invention.
  • Les figures 2A, 2B et 2C représentent l'ensemble de commutation de l'invention, dans une position dite libre, c'est-à-dire ensemble de commande absent.
  • Les figures 3A, 3B et 3C représentent l'ensemble de commutation de l'invention, dans une position dite opérationnelle, c'est-à-dire ensemble de commande monté sur l'ensemble de commutation.
  • Les figures 4A, 4B et 4C représentent l'ensemble de commutation de l'invention, dans une position dite opérationnelle actionnée, c'est-à-dire ensemble de commande monté et tête de commande actionnée.
  • La figure 5 représentent le dispositif de commutation de l'invention, dans une position dite non-opérationnelle, correspondant à une association mécanique défaillante entre ensemble de commande et ensemble de commutation.
Other characteristics and advantages will appear in the detailed description which follows, made with reference to the appended drawings in which:
  • The Figures 1A and 1B represent, from two different viewing angles and in partial exploded view, the internal part of the switching assembly of the invention.
  • The Figures 2A, 2B and 2C represent the switching assembly of the invention, in a so-called free position, that is to say absent control assembly.
  • The Figures 3A, 3B and 3C represent the switching assembly of the invention, in a so-called operational position, that is to say a control assembly mounted on the switching assembly.
  • The Figures 4A, 4B and 4C represent the switching assembly of the invention, in a so-called actuated operational position, that is to say mounted control assembly and actuated control head.
  • The figure 5 represent the switching device of the invention, in a so-called non-operational position, corresponding to a faulty mechanical association between control unit and switching unit.

Description détaillée d'au moins un mode de réalisationDetailed description of at least one embodiment

De manière connue, un dispositif de type arrêt d'urgence, appelé également interrupteur coup de poing, comporte deux ensembles 1, 2 distincts formés d'un ensemble de commande, désigné aussi premier ensemble 1, et d'un ensemble de commutation, désigné aussi second ensemble 2.In known manner, an emergency stop type device, also called a punch switch, comprises two separate sets 1, 2 formed by a control assembly, also designated first assembly 1, and by a switching assembly, designated also second set 2.

Le premier ensemble 1 (visible sur la figure 5) comporte un organe d'actionnement 10 destiné à être enfoncé en cas d'urgence par l'opérateur suivant un axe de commande (X) pour ouvrir un circuit électrique. L'organe d'actionnement 10 peut ainsi prendre une position de repos, dans laquelle il n'est pas enfoncé, laissant le circuit électrique fermé et une position d'actionnement dans laquelle il est enfoncé pour ouvrir le circuit électrique.The first set 1 (visible on the figure 5 ) comprises an actuating member 10 intended to be pressed in an emergency by the operator along a control axis (X) to open an electrical circuit. The actuating member 10 can thus take a rest position, in which it is not depressed, leaving the electrical circuit closed and an actuation position in which it is depressed to open the electrical circuit.

Le second ensemble 2 est un bloc de contacts destiné à la commande du circuit électrique. Celui-ci est représenté sur les figures 1A à 5 annexées. Ce second ensemble 2 comporte un corps ou boîtier 20, par exemple en matière plastique, comportant des moyens d'accrochage 21a, 21b au premier ensemble 1. Selon l'invention, le second ensemble 2 comporte un commutateur de commande permettant de commander le circuit électrique selon la position de l'organe d'actionnement 10. Il comporte également un commutateur de surveillance permettant de surveiller que le second ensemble 2 est bien accroché sur le premier ensemble 1 en maintenant le circuit électrique ouvert tant que le premier ensemble 1 est déconnecté mécaniquement du second ensemble 2.The second set 2 is a contact block for controlling the electrical circuit. This is represented on the Figures 1A to 5 attached. This second assembly 2 comprises a body or housing 20, for example of plastic, comprising attachment means 21a, 21b to the first assembly 1. According to the invention, the second assembly 2 comprises a control switch making it possible to control the circuit electric according to the position of the actuating member 10. It also includes a monitoring switch making it possible to monitor that the second set 2 is securely attached to the first set 1 while keeping the electrical circuit open as long as the first set 1 is disconnected mechanically from the second set 2.

Le second ensemble 2 comporte une première borne de contact 22a et une deuxième borne de contact 22b. Il comporte un premier contact fixe 23a relié électriquement à sa première borne 22a et un deuxième contact fixe 23b relié électriquement à sa deuxième borne 22b. Les deux bornes sont par exemple des bornes à vis classiques.The second assembly 2 comprises a first contact terminal 22a and a second contact terminal 22b. It comprises a first fixed contact 23a electrically connected to its first terminal 22a and a second fixed contact 23b electrically connected to its second terminal 22b. The two terminals are for example conventional screw terminals.

Le commutateur de commande comporte un poussoir de commande 30 actionnable en translation suivant l'axe (X) et un premier pont 31 de contacts mobiles portant un premier jeu de deux contacts mobiles dits de commande 32a, 32b, ledit pont 31 étant monté en liaison glissière sur le poussoir 30 de commande. Il comporte également un ressort de pression de contact R1 monté entre une butée 33 du poussoir de commande 30 et le premier pont 31 de contact mobile. Il comporte également un ressort de fermeture R2 monté dans un logement suivant l'axe (X) entre le poussoir de commande 30 et le corps 20 de l'ensemble de commutation 2. Le ressort de fermeture R2 et le ressort de pression de contact R1 sont de type hélicoïdal et ont leur axe orienté suivant l'axe (X).The control switch comprises a control pusher 30 which can be actuated in translation along the axis (X) and a first bridge 31 of mobile contacts carrying a first set of two so-called mobile control contacts 32a, 32b, said bridge 31 being mounted in connection slide on the control pusher 30. It also includes a contact pressure spring R1 mounted between a stop 33 of the pusher 30 and the first bridge 31 of movable contact. It also includes a closing spring R2 mounted in a housing along the axis (X) between the control button 30 and the body 20 of the switching assembly 2. The closing spring R2 and the contact pressure spring R1 are of helical type and have their axis oriented along the axis (X).

Le commutateur de surveillance comporte un poussoir de surveillance 40 actionnable en translation suivant l'axe (X) et un deuxième pont 41 de contacts mobiles portant un deuxième jeu de deux contacts mobiles dits de surveillance 42a, 42b, ledit deuxième pont 41 de contacts mobile étant monté en liaison glissière sur le poussoir de surveillance. Il comporte un ressort de pression de contact R3 monté suivant l'axe (X) entre une butée 43 du poussoir de surveillance 40 et le pont 41 de contacts mobiles. Il comporte également un ressort d'ouverture R4 monté dans un logement suivant l'axe (X) entre le poussoir de surveillance 40 et le corps 20 de l'ensemble de commutation. Le ressort de pression de contact R3 et le ressort d'ouverture R4 sont de type hélicoïdal et ont leur axe orienté suivant l'axe (X).The surveillance switch comprises a surveillance pusher 40 which can be actuated in translation along the axis (X) and a second bridge 41 of mobile contacts carrying a second set of two so-called surveillance mobile contacts 42a, 42b, said second bridge 41 of mobile contacts being mounted in slide connection on the monitoring plunger. It comprises a contact pressure spring R3 mounted along the axis (X) between a stop 43 of the monitoring plunger 40 and the bridge 41 of movable contacts. It also includes an opening spring R4 mounted in a housing along the axis (X) between the monitoring plunger 40 and the body 20 of the switching assembly. The contact pressure spring R3 and the opening spring R4 are of the helical type and have their axis oriented along the axis (X).

Le premier pont 31 de contacts mobile est déplaçable en translation entre une première position de fermeture et une deuxième position d'ouverture. Il porte un premier contact mobile de commande 32a agencé pour coopérer avec le premier contact fixe 23a et un deuxième contact mobile de commande 32b.The first movable contact bridge 31 is movable in translation between a first closed position and a second open position. It carries a first movable control contact 32a arranged to cooperate with the first fixed contact 23a and a second movable control contact 32b.

Le deuxième pont 41 de contacts mobile est également déplaçable en translation entre une première position d'ouverture et une deuxième position de fermeture. Il porte un premier contact mobile de surveillance 42a agencé pour coopérer avec le deuxième contact fixe 23b et un deuxième contact mobile de surveillance 42b.The second movable contact bridge 41 is also movable in translation between a first open position and a second closed position. It carries a first mobile monitoring contact 42a arranged to cooperate with the second fixed contact 23b and a second mobile monitoring contact 42b.

Le premier pont 31 de contacts mobile et le deuxième pont 41 de contacts mobiles sont réalisés en matériau métallique et permettent de réaliser une liaison électrique entre leur deux contacts mobiles.The first bridge 31 of movable contacts and the second bridge 41 of movable contacts are made of metallic material and allow an electrical connection to be made between their two movable contacts.

La solution de l'invention présente la particularité que le deuxième contact mobile de commande 32b est agencé pour coopérer avec le deuxième contact mobile de surveillance 42b. Ainsi lorsque le premier pont 31 de contacts mobile et le deuxième pont 41 de contacts mobile sont dans leur position de fermeture respective, le deuxième contact mobile de commande 32b et le deuxième contact mobile de surveillance 42b sont en contact, fermant ainsi le circuit électrique.The solution of the invention has the particularity that the second mobile control contact 32b is arranged to cooperate with the second mobile monitoring contact 42b. Thus, when the first mobile contact bridge 31 and the second mobile contact bridge 41 are in their respective closed position, the second mobile control contact 32b and the second mobile monitoring contact 42b are in contact, thus closing the electrical circuit.

La coopération des deux contacts mobiles nécessite un actionnement inversé du premier pont 31 de contacts mobile et du deuxième pont 41 de contacts mobile. Autrement dit, de sa position d'ouverture vers sa position de fermeture, le premier pont 31 de contacts mobile se déplace suivant l'axe (X) dans un sens et, de sa position d'ouverture vers sa position de fermeture, le deuxième pont 41 de contacts mobile se déplace suivant l'axe (X), mais dans le sens opposé. De même, le premier contact fixe 23a et le deuxième contact fixe 23b présentent chacun leur face de contact orientée dans des sens opposés pour coopérer chacun respectivement avec le premier contact mobile de commande 32a et avec le premier contact mobile de surveillance 42a.The cooperation of the two mobile contacts requires reverse actuation of the first bridge 31 of mobile contacts and of the second bridge 41 of mobile contacts. In other words, from its open position to its closed position, the first movable contact bridge 31 moves along the axis (X) in one direction and, from its open position to its closed position, the second bridge 41 of movable contacts moves along the axis (X), but in the opposite direction. Likewise, the first fixed contact 23a and the second fixed contact 23b each have their contact face oriented in opposite directions to cooperate each with the first mobile control contact 32a and with the first mobile monitoring contact 42a respectively.

Le deuxième ensemble 2 comporte également une première butée 34 réalisée sur le corps 20 et agencée pour coopérer avec le premier pont 31 de contacts mobile. Cette première butée 34 est positionnée de manière désaxée par rapport à l'axe de translation médian du premier pont 31 de contact mobile et à l'opposé de son premier contact mobile de commande 32a par rapport à cet axe, de manière à maintenir le pont 31 dans son axe lorsqu'il est en position de fermeture et que le deuxième pont 41 de contacts mobile est alors en position d'ouverture.The second assembly 2 also includes a first stop 34 produced on the body 20 and arranged to cooperate with the first bridge 31 of movable contacts. This first stop 34 is positioned offset from the median translation axis of the first movable contact bridge 31 and opposite its first movable control contact 32a relative to this axis, so as to maintain the bridge 31 in its axis when it is in the closed position and the second bridge 41 of movable contacts is then in the open position.

Le deuxième ensemble 2 comporte une deuxième butée 44 réalisée sur le corps 20 et agencée pour coopérer avec le deuxième 41 pont de contacts mobile. Cette deuxième butée 44 permet de bloquer le deuxième pont 41 de contacts mobile en translation lorsque celui-ci vient dans sa position de fermeture. Cette deuxième butée 44 est positionnée de manière désaxée par rapport à l'axe de translation médian du deuxième pont 41 de contact mobile et à l'opposé de son premier contact mobile de surveillance 42a par rapport audit axe, de manière à maintenir le pont 41 dans son axe lorsqu'il est en position de fermeture et d'éviter de venir désaxer le contact établi entre le deuxième contact mobile de commande 32b et le deuxième contact mobile de surveillance 42b.The second assembly 2 comprises a second stop 44 produced on the body 20 and arranged to cooperate with the second 41 movable contact bridge. This second stop 44 makes it possible to block the second bridge 41 of contacts movable in translation when the latter comes into its closed position. This second stop 44 is positioned offset from the median translation axis of the second movable contact bridge 41 and opposite its first movable monitoring contact 42a relative to said axis, so as to maintain the bridge 41 in its axis when it is in the closed position and to avoid coming off-center the contact established between the second mobile control contact 32b and the second mobile monitoring contact 42b.

Partant de cette architecture, le principe de fonctionnement du dispositif est décrit ci-dessous plus en détails en liaison avec les figures 2A à 5 :Starting from this architecture, the operating principle of the device is described below in more detail in conjunction with the Figures 2A to 5 :

Figures 2A à 2C - Premier état de fonctionnement Figures 2A to 2C - First operating state

L'ensemble de commutation 2 et l'ensemble de commande 1 sont désolidarisés.The switching assembly 2 and the control assembly 1 are separated.

Le poussoir de commande 30 est dans sa position de fermeture et le poussoir de surveillance 40 est dans sa position d'ouverture.The control button 30 is in its closed position and the monitoring button 40 is in its open position.

La tête du poussoir de surveillance 40 est décalée vers le haut par rapport à la tête du poussoir de commande 30.The head of the monitoring pusher 40 is offset upwards relative to the head of the control pusher 30.

Le premier contact mobile de surveillance 42a du deuxième pont 41 de contacts mobile n'est donc pas connecté sur le deuxième contact fixe 23b et son deuxième contact mobile de surveillance 42b n'est pas connecté au deuxième contact mobile de commande 32b du premier pont 31 de contacts mobile.The first mobile monitoring contact 42a of the second mobile contact bridge 41 is therefore not connected to the second fixed contact 23b and its second mobile monitoring contact 42b is not connected to the second mobile control contact 32b of the first bridge 31 of mobile contacts.

Le circuit électrique est donc ouvert.The electrical circuit is therefore open.

Dans cet état, sollicité par le ressort de fermeture R2, le poussoir de commande 30 vient en appui contre une butée 35 du boîtier 20 et le premier pont 31 de contacts mobile est en appui contre la première butée 34 définie ci-dessus, permettant de solliciter le ressort de pression de contact R1 agencé entre le premier pont 31 de contacts mobile et le poussoir de commande 30. La première butée 34 peut être positionnée sur le boîtier pour autoriser une légère rotation du premier pont 31 de contacts mobile dans le sens horaire.In this state, urged by the closing spring R2, the control pusher 30 bears against a stop 35 of the housing 20 and the first bridge 31 of movable contacts is pressed against the first stop 34 defined above, making it possible to stress the contact pressure spring R1 arranged between the first movable contact bridge 31 and the control pusher 30. The first stop 34 can be positioned on the housing to allow a slight rotation of the first movable contact bridge 31 clockwise .

Figures 3A à 3C - Deuxième état de fonctionnement Figures 3A to 3C - Second operating state

L'ensemble de commande 1 (non représenté) est accroché à l'ensemble de commutation 2.The control assembly 1 (not shown) is hooked to the switching assembly 2.

L'accrochage entraîne la translation du poussoir de surveillance 40 de sa position d'ouverture vers sa position de fermeture et forme une butée supérieure haute pour le poussoir de surveillance 40.The attachment causes the monitoring pusher 40 to translate from its open position to its closed position and forms an upper upper stop for the monitoring pusher 40.

En position de fermeture, le premier contact mobile de surveillance 42a vient en contact avec le deuxième contact fixe 23b et le deuxième contact mobile de surveillance 42b vient en contact avec le deuxième contact mobile de commande 32b.In the closed position, the first mobile monitoring contact 42a comes into contact with the second fixed contact 23b and the second mobile monitoring contact 42b comes into contact with the second mobile control contact 32b.

Le ressort d'ouverture R4 est ainsi sollicité en compression lors de la translation du poussoir de surveillance 40. Le ressort de pression de contact R3 est également sollicité en compression, permettant d'appliquer une pression de contact du premier contact mobile de surveillance 42a contre le deuxième contact fixe 23b et du deuxième pont 41 de contacts mobile contre la deuxième butée 44.The opening spring R4 is thus stressed in compression during the translation of the monitoring plunger 40. The contact pressure spring R3 is also stressed in compression, making it possible to apply a contact pressure of the first movable monitoring contact 42a against the second fixed contact 23b and the second bridge 41 of movable contacts against the second stop 44.

Une translation du poussoir de commande 30 se produit également, le libérant de sa butée 35, cette translation étant absorbée par le ressort de fermeture R2. Le premier pont 31 de contacts mobile reste dans sa position de fermeture sous l'action du ressort de pression de contact R1.A translation of the control pusher 30 also occurs, releasing it from its stop 35, this translation being absorbed by the closing spring R2. The first movable contact bridge 31 remains in its closed position under the action of the contact pressure spring R1.

La deuxième butée 44 est positionnée pour maintenir une pression de contact suffisante entre le deuxième contact mobile de surveillance 42b et le deuxième contact mobile de commande 32b lorsque les deux ponts 31, 41 sont en position de fermeture.The second stop 44 is positioned to maintain a sufficient contact pressure between the second mobile monitoring contact 42b and the second mobile control contact 32b when the two bridges 31, 41 are in the closed position.

Dans cet état, la pression de contact appliquée par chaque ressort de pression de contact R1, R3 au niveau de ces deux contacts mobiles 32b, 42b permet de compenser la légère rotation du premier pont 31 de contacts mobile (légère rotation présente en l'absence de l'ensemble de commande - voir ci-dessus) et de replacer celui-ci dans l'axe.In this state, the contact pressure applied by each contact pressure spring R1, R3 at these two movable contacts 32b, 42b makes it possible to compensate for the slight rotation of the first bridge 31 of movable contacts (slight rotation present in the absence of the control unit - see above) and replace it in the axis.

Le circuit électrique est donc fermé et le dispositif de commutation formé par l'assemblage de l'ensemble de commande 1 sur l'ensemble de commutation 2 est opérationnel.The electrical circuit is therefore closed and the switching device formed by assembling the control assembly 1 on the switching assembly 2 is operational.

Figures 4A à 4C - Troisième état de fonctionnement Figures 4A to 4C - Third operating state

L'organe d'actionnement 10, c'est-à-dire la tête de l'arrêt d'urgence, est actionné. En position actionnée, l'organe d'actionnement 10 forme une butée supérieure basse pour les deux poussoirs,The actuator 10, that is to say the head of the emergency stop, is actuated. In the actuated position, the actuating member 10 forms a lower upper stop for the two pushers,

L'actionnement de la tête entraîne donc à la fois la translation du poussoir de commande 30 et la translation du poussoir de surveillance 40.The actuation of the head therefore causes both the translation of the control pusher 30 and the translation of the monitoring pusher 40.

Le deuxième pont 41 de contacts mobile étant en position de fermeture et bloquée en translation par la deuxième butée 44, celui-ci ne peut pas se translater. La translation du poussoir de surveillance 40 est donc absorbée par le ressort d'ouverture R4 et par le ressort de pression de contact R3.The second bridge 41 of movable contacts being in the closed position and locked in translation by the second stop 44, the latter cannot translate. The translation of the monitoring plunger 40 is therefore absorbed by the opening spring R4 and by the contact pressure spring R3.

Dans son mouvement de translation, le poussoir de commande 30 entraîne, grâce à une butée 36 réalisée sur sa tige, la translation du premier pont 31 de contacts mobile de sa position de fermeture vers sa position d'ouverture. La translation du poussoir de commande 30 est permise par compression du ressort de fermeture R2, entraînant la libération du ressort R1 de pression de contact et la remontée du premier pont 31 de contacts mobile contre ladite butée 36. Le premier contact mobile de commande 32a est alors éloigné du premier contact fixe 23a et le deuxième contact mobile de commande 32b est éloigné du deuxième contact mobile de surveillance 42b, entraînant ainsi l'ouverture du circuit électrique.In its translational movement, the control pusher 30 causes, thanks to a stop 36 made on its rod, the translation of the first bridge 31 of movable contacts from its closed position to its open position. The translation of the control pusher 30 is allowed by compression of the closing spring R2, causing the release of the contact pressure spring R1 and the ascent of the first movable contact bridge 31 against said stop 36. The first movable control contact 32a is then removed from the first fixed contact 23a and the second movable control contact 32b is removed from the second movable monitoring contact 42b, thus opening the electrical circuit.

Figure 5 - Quatrième état de fonctionnement Figure 5 - Fourth operating state

Cette figure 5 illustre le fonctionnement de l'invention lorsque l'ensemble de commande 1 se trouve être mal accroché à l'ensemble de commutation 2.This figure 5 illustrates the operation of the invention when the control assembly 1 is found to be poorly attached to the switching assembly 2.

Dans cette situation, le poussoir de surveillance 40 peut ainsi être dans une position intermédiaire située entre sa position correspondant à l'ensemble de commande 1 non accroché (figures 2A à 2C) et sa position correspondant à l'ensemble de commande 1 accroché de manière opérationnelle (figures 3A à 3C). Dans cette position intermédiaire, la translation du poussoir de surveillance 40 est permise par compression du ressort d'ouverture R4 mais elle est insuffisante pour entraîner le deuxième pont 41 de contacts mobile jusqu'à sa position de fermeture. Le circuit électrique reste alors ouvert, tant que l'accrochage mécanique n'est pas correctement réalisé entre les deux ensembles, ce qui permet de garantir un haut niveau de sécurité.In this situation, the monitoring pusher 40 can thus be in an intermediate position situated between its position corresponding to the non-hooked control assembly 1 ( Figures 2A to 2C ) and its position corresponding to the operationally attached control assembly 1 ( Figures 3A to 3C ). In this intermediate position, the translation of the monitoring plunger 40 is allowed by compression of the opening spring R4 but it is insufficient to drive the second bridge 41 of movable contacts to its closed position. The electrical circuit then remains open, as long as the mechanical coupling is not correctly carried out between the two assemblies, which guarantees a high level of security.

En cas d'éjection complète de l'ensemble de commande 1 par rapport à l'ensemble de commutation, c'est-à-dire en cas de décrochage complet de la tête, le dispositif revient automatiquement dans le premier état de fonctionnement décrit ci-dessus. Dans cette situation, comme l'ensemble de commande n'est plus du tout accroché à l'ensemble de commutation, le poussoir de surveillance 40 revient vers sa position initiale, sollicité par les deux ressorts R3 et R4.In the event of complete ejection of the control assembly 1 relative to the switching assembly, that is to say in the event of complete detachment of the head, the device automatically returns to the first operating state described here. -above. In this situation, as the control assembly is no longer attached to the switching assembly at all, the monitoring plunger 40 returns to its initial position, urged by the two springs R3 and R4.

Par ailleurs, on peut noter que lorsque le dispositif de commutation est doté de plusieurs ensembles de commutation adjacents, l'ensemble de commutation dit principal, correspondant à celui de l'invention décrite ci-dessus, peut être doté de moyens mécaniques aptes à agir sur chaque ensemble de commutation adjacent pour assurer leur accrochage mécanique opérationnel. Il s'agit ainsi de sécuriser l'accrochage d'au moins un autre ensemble de commutation à l'aide de l'ensemble de commutation principal dont l'accrochage est déjà surveillé grâce à la solution de l'invention décrite ci-dessus. Selon l'invention, l'ensemble de commutation principal 2 permet donc de sécuriser l'assemblage d'un ou deux ensembles de commutation auxiliaires sur l'ensemble de commande 1. Pour cela, chaque ensemble de commutation auxiliaire doit être positionné de manière adjacente à l'ensemble de commutation principal 2. Si le dispositif comporte deux ensembles de commutation auxiliaires, ces ensembles doivent être positionnés de part et d'autre de l'ensemble de commutation principal 2.Furthermore, it can be noted that when the switching device is provided with several adjacent switching assemblies, the so-called main switching assembly, corresponding to that of the invention described above, can be provided with mechanical means capable of acting on each adjacent switching assembly to ensure their operational mechanical latching. It is thus a matter of securing the attachment of at least one other switching assembly using the main switching assembly, the attachment of which is already monitored using the solution of the invention described above. According to the invention, the main switching assembly 2 therefore makes it possible to secure the assembly of one or two auxiliary switching assemblies on the control assembly 1. For this, each auxiliary switching assembly must be positioned adjacent to it. to the main switching assembly 2. If the device comprises two auxiliary switching assemblies, these assemblies must be positioned on either side of the main switching assembly 2.

Ces moyens mécaniques de sécurisation peuvent comporter une partie saillante réalisée sur le boîtier 20 de l'ensemble et coopérant avec une face arrière de l'ensemble de commutation auxiliaire adjacent lorsque l'ensemble de commutation principal 2 est accroché mécaniquement sur l'ensemble de commande 1. Cette partie saillante peut être constituée d'une ailette 220 réalisée perpendiculairement à l'axe principal. Elle est visible sur les figures annexées.These mechanical securing means may include a projecting part made on the housing 20 of the assembly and cooperating with a rear face of the adjacent auxiliary switching assembly when the main switching assembly 2 is mechanically hooked on the control assembly 1. This projecting part may consist of a fin 220 made perpendicular to the main axis. It is visible in the attached figures.

On comprend de ce qui précède que l'invention présente de nombreux avantages, parmi lesquels :

  • Elle permet de maintenir le circuit électrique ouvert et le dispositif non opérationnel, tant que l'accrochage mécanique entre les deux ensembles n'est pas correctement réalisé ;
  • Elle est d'un fonctionnement simple et fiable, faisant appel à un minimum de composants supplémentaires ;
  • Elle est d'un encombrement particulièrement limité, car les deux ponts de contact sont connectés directement en série, via les deux contacts centraux ;
  • Elle propose également une solution permettant de surveiller l'accrochage mécanique des blocs adjacents.
It is understood from the above that the invention has many advantages, including:
  • It keeps the electrical circuit open and the device non-operational, as long as the mechanical coupling between the two assemblies is not properly performed;
  • It is simple and reliable to operate, requiring a minimum of additional components;
  • It is particularly compact, because the two contact bridges are connected directly in series, via the two central contacts;
  • It also offers a solution for monitoring the mechanical attachment of adjacent blocks.

Claims (12)

Ensemble de commutation (2) destiné à être assemblé sur un ensemble de commande (1) doté d'un organe d'actionnement (10) pouvant prendre une position de repos et une position d'actionnement, ledit ensemble de commutation comportant : - Un corps (20), un circuit électrique comportant deux contacts fixe (23a, 23b), ledit circuit électrique étant commandable à la fois par un commutateur de commande de type normalement fermé comportant un premier pont (31) de contacts mobile portant un premier contact mobile de commande (32a) et un deuxième contact mobile de commande (32b) et par un commutateur de surveillance de type normalement ouvert, relié en série avec ledit commutateur de commande et comportant un deuxième pont (41) de contacts mobile portant un premier contact mobile de surveillance (42a) et un deuxième contact mobile de surveillance (42b), - Caractérisé en ce que : - Le premier contact mobile de commande (32a) est agencé pour coopérer avec le premier contact fixe (23a) et le premier contact mobile de surveillance (42a) est agencé pour coopérer avec le deuxième contact fixe (23b), - Le deuxième contact mobile de commande (32b) est agencé pour coopérer directement avec le deuxième contact mobile de surveillance (42b). Switching assembly (2) intended to be assembled on a control assembly (1) provided with an actuating member (10) capable of assuming a rest position and an actuating position, said switching assembly comprising: - A body (20), an electrical circuit comprising two fixed contacts (23a, 23b), said electrical circuit being controllable at the same time by a normally closed type control switch comprising a first bridge (31) of movable contacts carrying a first mobile control contact (32a) and a second mobile control contact (32b) and by a normally open type monitoring switch, connected in series with said control switch and comprising a second bridge (41) of mobile contacts carrying a first mobile monitoring contact (42a) and a second mobile monitoring contact (42b), - Characterized in that : The first movable control contact (32a) is arranged to cooperate with the first fixed contact (23a) and the first movable monitoring contact (42a) is arranged to cooperate with the second fixed contact (23b), - The second mobile control contact (32b) is arranged to cooperate directly with the second mobile monitoring contact (42b). Ensemble de commutation selon la revendication 1, caractérisé en ce que le premier pont (31) de contact mobile est déplaçable en translation suivant un axe de commande (X) entre une première position de fermeture et une deuxième position d'ouverture et en ce que son premier contact mobile de commande (32a) est apte à être en contact avec le premier contact fixe (23a) dans la première position de fermeture et éloigné du premier contact fixe (23a) dans la deuxième position d'ouverture.Switch assembly according to claim 1, characterized in that the first movable contact bridge (31) can be displaced in translation along a control axis (X) between a first closed position and a second open position and in that its first movable control contact (32a) is capable of being in contact with the first fixed contact (23a) in the first closed position and away from the first fixed contact (23a) in the second open position. Ensemble de commutation selon la revendication 2, caractérisé en ce que le deuxième pont (41) de contact mobile est déplaçable en translation suivant ledit axe de commande (X) entre une première position d'ouverture et une deuxième position de fermeture et en ce que son premier contact mobile de surveillance (42a) est apte à être éloigné du deuxième contact fixe (23b) dans la première position d'ouverture et à être en contact avec le deuxième contact fixe (23b) dans la deuxième position de fermeture.Switching assembly according to claim 2, characterized in that the second movable contact bridge (41) is displaceable in translation along said control axis (X) between a first open position and a second closed position and in that its first mobile monitoring contact (42a) is capable of being moved away from the second fixed contact (23b) in the first position opening and to be in contact with the second fixed contact (23b) in the second closing position. Ensemble de commutation selon la revendication 3, caractérisé en ce que le deuxième contact mobile de surveillance (42b) et le deuxième contact mobile de commande (32b) sont agencés pour être en contact lorsque le premier pont (31) de contact mobile est dans sa première position de fermeture et le deuxième pont (41) de contact mobile est dans sa deuxième position de fermeture.Switching assembly according to claim 3, characterized in that the second movable monitoring contact (42b) and the second movable control contact (32b) are arranged to be in contact when the first movable contact bridge (31) is in its first closed position and the second movable contact bridge (41) is in its second closed position. Ensemble de commutation selon la revendication 4, caractérisé en ce que, de sa position d'ouverture vers sa position de fermeture, le premier pont (31) de contacts mobile est apte à se déplacer en translation suivant ledit axe de commande (X) dans un premier sens et en ce que, de sa position d'ouverture vers sa position de fermeture, le deuxième pont (41) de contacts mobile se déplace suivant ledit axe de commande (X), dans un deuxième sens qui est opposé audit premier sens.Switching assembly according to claim 4, characterized in that , from its open position to its closed position, the first bridge (31) of movable contacts is able to move in translation along said control axis (X) in a first direction and in that , from its open position to its closed position, the second movable contact bridge (41) moves along said control axis (X), in a second direction which is opposite to said first direction . Ensemble de commutation selon l'une des revendications 3 à 5, caractérisé en ce qu'il comporte une première butée (34) réalisée sur le corps (20) et agencée pour coopérer avec le premier pont (31) de contacts mobile dans sa première position de fermeture, cette première butée (34) étant positionnée de manière désaxée par rapport à l'axe de translation médian du premier pont de contact mobile et à l'opposé de son premier contact mobile de commande par rapport audit axe.Switching assembly according to one of claims 3 to 5, characterized in that it comprises a first stop (34) produced on the body (20) and arranged to cooperate with the first movable contact bridge (31) in its first closed position, this first stop (34) being positioned offset from the median axis of translation of the first movable contact bridge and opposite its first movable control contact relative to said axis. Ensemble de commutation selon la revendication 6, caractérisé en ce qu'il comporte une deuxième butée (44) réalisée sur le corps (20) et agencée pour coopérer avec le deuxième pont (41) de contacts mobile dans sa première position de fermeture, cette deuxième butée étant positionnée de manière désaxée par rapport à l'axe de translation médian du deuxième pont (41) de contact mobile et à l'opposé de son premier contact mobile de surveillance (42a) par rapport audit axe.Switching assembly according to claim 6, characterized in that it comprises a second stop (44) produced on the body (20) and arranged to cooperate with the second movable contact bridge (41) in its first closed position, this second stop being positioned offset from the median translation axis of the second movable contact bridge (41) and opposite its first movable monitoring contact (42a) relative to said axis. Ensemble de commutation selon l'une des revendications 1 à 7, caractérisé en ce que le premier pont (31) de contacts mobile est monté en liaison glissière sur un poussoir de commande (30) et en ce que l'ensemble de commutation (2) comporte un premier ressort de pression de contact (R1) agencé entre le poussoir de commande (30) et le premier pont (31) de contacts mobile.Switching assembly according to one of Claims 1 to 7, characterized in that the first movable contact bridge (31) is mounted in sliding connection on a control pushbutton (30) and in that the switching assembly (2 ) comprises a first contact pressure spring (R1) arranged between the control pusher (30) and the first bridge (31) of movable contacts. Ensemble de commutation selon la revendication 8, caractérisé en ce qu'il comporte un ressort de fermeture (R2) agencé entre le corps (20) et le poussoir de commande (30).Switch assembly according to claim 8, characterized in that it comprises a closing spring (R2) arranged between the body (20) and the control pusher (30). Ensemble de commutation selon la revendication 8 ou 9, caractérisé en ce que le deuxième pont (41) de contacts mobile est monté en liaison glissière sur un poussoir de surveillance (40) et en ce que l'ensemble de commutation (2) comporte un deuxième ressort de pression de contact (R3) agencé entre le poussoir de surveillance et le deuxième pont de contacts mobile.Switching assembly according to claim 8 or 9, characterized in that the second movable contact bridge (41) is mounted in sliding connection on a monitoring plunger (40) and in that the switching assembly (2) comprises a second contact pressure spring (R3) arranged between the monitoring pusher and the second movable contact bridge. Ensemble de commutation selon la revendication 10, caractérisé en ce qu'il comporte un ressort d'ouverture (R4) agencé entre le corps (20) et le poussoir de surveillance (40).Switching assembly according to claim 10, characterized in that it comprises an opening spring (R4) arranged between the body (20) and the monitoring plunger (40). Dispositif de commutation comprenant un ensemble de commande (1) comportant un organe d'actionnement (10) pouvant prendre une position de repos et une position d'actionnement, caractérisé en ce qu'il comporte un ensemble de commutation (2) tel que défini dans l'une des revendications 1 à 11.Switching device comprising a control assembly (1) comprising an actuating member (10) capable of assuming a rest position and an actuating position, characterized in that it comprises a switching assembly (2) as defined in one of claims 1 to 11.
EP19204028.5A 2018-11-07 2019-10-18 Switching assembly with secure attaching solution for emergency stop device Active EP3651173B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1860252A FR3088135B1 (en) 2018-11-07 2018-11-07 SWITCHING KIT WITH SECURE HANGING SOLUTION FOR EMERGENCY STOP DEVICE

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EP3651173A1 true EP3651173A1 (en) 2020-05-13
EP3651173B1 EP3651173B1 (en) 2020-11-25

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US (1) US11101084B2 (en)
EP (1) EP3651173B1 (en)
CN (1) CN111161963B (en)
BR (1) BR102019022381B1 (en)
FR (1) FR3088135B1 (en)

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CN114975009A (en) * 2021-02-26 2022-08-30 霍尼韦尔国际公司 Switch component with redundant contact pads

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US6198058B1 (en) 1999-09-27 2001-03-06 Rockwell Technologies, Llc Switch contact mechanism
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BR102019022381B1 (en) 2022-10-25
BR102019022381A2 (en) 2020-05-26
FR3088135A1 (en) 2020-05-08
EP3651173B1 (en) 2020-11-25
CN111161963A (en) 2020-05-15
CN111161963B (en) 2024-04-05
BR102019022381A8 (en) 2022-07-26
US11101084B2 (en) 2021-08-24
US20200144005A1 (en) 2020-05-07
FR3088135B1 (en) 2020-10-09

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