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EP1220255B1 - Electromechanical contactor having a contact bridge with independant spring - Google Patents

Electromechanical contactor having a contact bridge with independant spring Download PDF

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Publication number
EP1220255B1
EP1220255B1 EP01403376A EP01403376A EP1220255B1 EP 1220255 B1 EP1220255 B1 EP 1220255B1 EP 01403376 A EP01403376 A EP 01403376A EP 01403376 A EP01403376 A EP 01403376A EP 1220255 B1 EP1220255 B1 EP 1220255B1
Authority
EP
European Patent Office
Prior art keywords
contact
compartment
armature
contact bridge
spring
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.)
Expired - Lifetime
Application number
EP01403376A
Other languages
German (de)
French (fr)
Other versions
EP1220255A1 (en
Inventor
Antoine Peron
Pierre Résidence les Hauts d'Antibes Koch
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.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SA
Legrand SNC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Legrand SA, Legrand SNC filed Critical Legrand SA
Publication of EP1220255A1 publication Critical patent/EP1220255A1/en
Application granted granted Critical
Publication of EP1220255B1 publication Critical patent/EP1220255B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts

Definitions

  • a contactor of this type is known from FR-2 756 092 in the name of the applicant.
  • the contact bridges are embedded on the actuator with their contact spring.
  • the contact spring of an opening contact bridge therefore acts against the return spring of the movable armature since it pushes it towards its working position while the return spring pushes it towards its rest position.
  • the document FR-2 652 947 provides for constituting a fixed support for the contact springs by means of a wafer fixedly mounted in the housing.
  • the invention aims to provide a contactor of the aforementioned type, which is both reliable and easy to implement, and which works as well with contact bridges of the "open” type with contact bridges of the type "Closed".
  • This contact spring is thus independent of the actuator, so that it does not act against the return spring in the rest position of the moving armature.
  • the contactor is thus faster, more accurate and more reliable.
  • the actuator comprises a contact block having at least one compartment capable of receiving a closing contact bridge.
  • This compartment is delimited longitudinally by two opposite transverse faces, one of which forms said first abutment surface, while the other forms a bearing surface for the spring of the contact bridge so that the contact bridge assembly - Spring is embedded in said contact block.
  • the compartment is for example closed, on the side of said bearing surface of the housing, by a partition having two opposite faces, one of which, turned towards the inside of the compartment, forms the first abutment surface, while the other forms the second abutment surface.
  • the contact block may comprise a second compartment superimposed on the first and separated from it by said partition, this second compartment being capable of receiving an opening contact bridge.
  • This second compartment can be separated from said bearing surface of the housing by a wall in which is formed a through hole forming a passage for the spring of the opening contact bridge.
  • this spring has, excluding stress, a pitch of a helix whose value is greater than that of the thickness of the wall in which the through hole is made.
  • the actuator comprises a contact block comprising at least one compartment capable of receiving a closing contact bridge or an opening contact bridge.
  • This compartment is for example delimited longitudinally by two opposite faces, one of which forms said first abutment surface and the other forms said second abutment surface, said compartment being separated from said bearing surface of the casing by a wall of which one face , turned towards the inside of the compartment, forms said first bearing surface, and in which is formed a through hole forming a passage for the spring of the opening contact bridge.
  • the actuator is U-shaped section flanking the fixed armature, and has a transverse base forming said door block contact, and two longitudinal branches facing, projecting from the contact block, and each fixed at one end to said movable armature.
  • the return spring is located between the contact block and the housing, on which it bears.
  • the return spring is supported on the bearing surface of the housing.
  • the return spring is firstly inserted into a well of the contact block, and secondly fitted on a protruding stud of the housing.
  • this well is between two contact door of the contact block, each contact door having at least one compartment as described above.
  • the contactor 1 comprises a housing 2 in which is housed an electromagnet 3 whose power control the operation of the electrical apparatus.
  • the housing 2 comprises a housing body 4 intended to be removably attached to a rail of an electrical cabinet (not shown) by means of a fastening system consisting of a pair of claws 5, 6 facing each other, at least one of which is sliding, and is urged towards the other 6 by a return spring 7.
  • the casing 2 further comprises a cover 8 which overcomes the casing body 4 while being both snapped and snapped into this one.
  • the cover 8 is in the form of a cap and has a nose 9 intended to be engaged in the window of a plastron (not shown) of the electrical cabinet, to provide at least visual access to the contactor 1.
  • the electromagnet 3 comprises, on the one hand, a fixed part 10 including a coil 11 supported by a casing 12 fixed to the casing 2 as well as a fixed armature 13 associated with the coil 11, and, on the other hand, a mobile armature 14 located opposite the fixed armature 13.
  • the movable armature 14 is adapted to take a rest position (FIGS. 2, 3, 6, 8, 9, 12, 14) in which it is spaced apart from the fixed armature 13 while being situated at an air gap distance from that and a working position (FIGS. 4, 5, 7, 10, 11, 13) in which it is pressed against the fixed armature 13.
  • the moving armature 14 is biased towards its rest position by a return spring 15 which bears against the casing body 4.
  • An actuator 16 is coupled to the moving armature 14 to drive a contact bridge 17, 17 'adapted to establish an electrical connection between a first and a second conductor 18, 19, mounted in the housing body 4, and located in look.
  • the contactor 1 of the bipolar type comprises two first conductors 18 and two second conductors 19.
  • the contactor 1 For its connection to the electrical network, the contactor 1 comprises two first power terminals 20 arranged on the same side of the housing 2, one of which is intended to connect one of the first conductors 18 to a pole of the network, while that the other is intended to connect the other first conductor 18 to another pole of the network.
  • Two second power terminals 21 are also provided for similarly connecting the second conductors 19 to the electrical apparatus.
  • each power terminal 20, 21 is arranged to clamp a stripped electrical wire of the power grid.
  • each terminal 20, 21 comprises a movable connecting element 22 slidably mounted in the housing body 4, the sliding of this element 22 being controlled by a clamping screw 23 engaged in a hole 24 of the cover 8, and which , bearing on the conductor 18, 19, causes by its rotation the pinching of the stripped wire between the connection element 22 and the conductor 18, 19, on which the connection element 22 is engaged.
  • Each power terminal 20, 21 is mounted in the housing body 4 opposite a window 25 formed therein for the passage of the corresponding stripped wire of the electrical network.
  • connection element 22 has a projection 26 forming a flap capable of closing the window 25 during the sliding of the the element 22 ( Figure 2).
  • the contactor 1 further comprises two control terminals 27 for connecting the coil to a power control circuit thereof.
  • Each first conductor 18 has an end portion 28 whose end carries or forms a fixed contact 29, while each second conductor 19 has an end portion 30 disposed facing the end portion 28 of the first conductor 18, this end portion 30 carrying or also forming a fixed contact 31.
  • Each contact bridge 17, 17 ' is in turn itself in the form of a conductive strip whose ends carry or form a movable contact 32, 33 may be applied against a fixed contact 29, 31 to connect them conductors 18, 19.
  • the contact bridge 17, 17 ' is able to occupy a closed position in which it establishes an electrical connection between the fixed contacts 29, 31 via, respectively, movable contacts 32, 33, and an open position in which it is at a distance from the conductors 18, 19, these movable contacts 32, 33 then being spaced apart from the fixed contacts 29, 31.
  • the contact bridge 17 is arranged to occupy its closed position, that is to say connect the fixed contacts 29, 31, in the working position of the mobile armature 14, as shown in FIGS. 4 and 5, as well as in FIG. 7.
  • Such a contact bridge 17 is said to be of the "closed" type.
  • the contact bridge In the open mode of operation, the contact bridge, referenced 17 'for the sake of clarity, is arranged to occupy its closed position, that is to say to connect the fixed contacts 29, 31, in the position of rest of the mobile armature 14, as shown in Figures 8 and 9, as well as in Figure 12.
  • Such a contact bridge 17 ' is said to type "open".
  • the contactor 1 is arranged to operate both on opening and on closing, as is apparent from what follows.
  • the actuator 16 has a U-shaped section and comprises a transverse base forming a contact block 34 which project two parallel parallel branches 35 which each have an end 36 engaged on the end of a transverse rod 37 passing through a bore of the mobile armature 14, so that the actuator 16 is coupled to the movable armature 14.
  • the contact block 34 comprises two paired contact doors 38 located substantially in the extension of the branches 35.
  • Each contact door 38 comprises two superimposed compartments, namely an upper compartment 39 adapted to receive a contact bridge 17 of the closing type, and a lower compartment 40 adapted to receive a contact bridge 17 'of the opening type.
  • the upper compartment 39 and the lower compartment 40 are separated from each other by a partition 41 having two opposite faces respectively forming a first abutment surface 42 looking towards the movable armature 14, and a second abutment surface 43 looking at to the opposite.
  • the upper compartment 39 is delimited longitudinally on the one hand by the first abutment surface 42, on the other by a transverse face 44 facing it, and, transversely, by two upper longitudinal walls 75, facing each other.
  • a contact bridge 17 of the closing type is inserted in the upper compartment 39 being biased towards its closed position by a contact spring 45 operating at the compression, which is associated with it, which is supported on the one hand on the contact bridge 17, and on the other hand against the transverse face 44, so that the contact bridge assembly 17- spring 45 is embedded in the contact block 34.
  • the contact block 34 moves longitudinally in a space 46 formed between, on the one hand the electromagnet 3, more particularly the fixed armature 13, and on the other hand a bottom wall 47 of the casing body 4.
  • the lower compartment 40 is itself delimited longitudinally, on the one hand by the partition 41, and on the other hand by a wall 48 substantially parallel to the partition 41, forming a free end of the actuator 16, and separating the compartment lower 40 of the bottom wall 47.
  • the lower compartment 40 is defined transversely by two lower walls 78, longitudinal, opposite.
  • a contact bridge 17 'with opening is inserted in the lower compartment 40.
  • the wall 48 makes it possible in particular to stiffen the contact block 34, while the through hole 51, which here has a diameter slightly greater than that of the spring 49, avoids any bending and inadvertent escape thereof.
  • the spring 49 has, without stress, a pitch of a helix, that is to say a distance between two successive turns, of value less than that of the thickness of the partition 48, so as to avoid any risk of engagement of the spring 49 with the partition 48 between two successive turns.
  • the electromagnet 3 is now described in more detail.
  • the carcass 12 is substantially I-shaped section, and comprises a base 54 and a plate 55 connected by a hollow central core 56 around which is wound the coil 11 which is trapped between the base 54 and the plate 55.
  • Each armature 13, 14 has an E-shaped section, and has two end branches 57 flanking the coil 11 and its carcass 12, as well as a central branch 58 engaged inside the core 56.
  • the carcass 12 has four feet 59 which project from the base 54 in the direction of the bottom wall 47 of the casing body 4.
  • the latter comprises four tabs 60 disposed opposite the feet 59.
  • the tabs 60 protrude from the bottom wall 47 with which they are integral with respect to the carcass 12.
  • each conductor 18, 19 is immobilized while being tight, close to the fixed contact 29, 31, between a first jaw belonging to the housing 2 and formed by one of the legs 60, and a second jaw belonging to the carcass 12, and formed by the foot 59 corresponding.
  • the assembly of the casing 12 to the casing body 4 and the tightening of the end portions 28, 30 of the conductors 18, 19 are provided by two screws 61.
  • Each screw 61 is inserted into a through hole 62 formed in the bottom wall 47 of the housing body 4, and forming a passage for the screw 61, the latter being further engaged in a threaded bore 63 of the base 54, located in view of the through hole 62 and coaxial with it.
  • the through hole 62 is formed in a chimney 64 projecting from the bottom wall 47 towards the casing 12.
  • the bore 63 is in turn made in a barrel 65 protruding from the base 54 towards the bottom wall 47, opposite the chimney 64.
  • the clearance J is the distance that separates the chimney 64 from the drum 65 when the assembly of the carcass 12 to the casing body 4 is made, at least before the tightening of the conductors 18, 19 is achieved.
  • the bottom wall 47 has the ability to flex when the screws 61 are tightened, towards the carcass 12.
  • the actuator 16 is guided in its movement by grooves provided for this purpose in the housing body, while it is biased towards the rest position by the return spring 15 which is compressed, in the space 46, between the contact block 34 and the bottom wall 47 of the casing body 4.
  • the return spring 15 is firstly inserted into the bore of a cylindrical well 66 made in the contact block 34 and located between the contact holders 38.
  • the return spring 15 is further fitted on a stud 53 forming a stop for the spring 15, and protruding from the bottom wall 47 with which it came from material.
  • the contactor 1 comprises other constituent elements, which are briefly described at present.
  • the plate 67 also forms a guide for a lever 69, one end of which is fitted on the rod 37, whereas the other end forms a retractable sight 70 which can appear or disappear, depending on the position of the mobile armature 14, facing a window 71 closed by a flap 72 allowing access to the pusher 68.
  • the base 54 of the carcass 12 has, between two adjacent feet 59 situated on the same side of the base 54, a housing 73 into which the fixed armature 13 is introduced.
  • This housing 73 has a transverse abutment surface 74 extending between the feet 59, looking towards the bottom wall 47 of the casing body 4, and against which the fixed armature 13 is pressed in the working position of the armature 14.
  • each contact door 38 comprises a single compartment of the type of the lower compartment 40 described above and adapted to receive both a closure type contact bridge and a contact bridge of the type to opening.
  • first abutment surface 42 is carried by the wall 48 of the compartment, while the second abutment surface 43 is formed by an upper transverse face of the compartment, facing the first abutment surface 42.
  • the conductors are immobilized by being clamped between the jaws 59, 60, elsewhere than at their ends, according to the configuration of the contactor, the shape or arrangement of the conductors.
  • the contactor is multipole, for example of the quadrupole type, the contact block comprising for this purpose two pairs of contact door, one of these pairs operating for example at the opening, while the other of these pairs works on closing.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Contacts (AREA)
  • Breakers (AREA)
  • Valve Device For Special Equipments (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Electromagnets (AREA)
  • Push-Button Switches (AREA)

Abstract

The electromechanical command contact has a fixed unit. There is a contactor (1) presenting a fixed surface on the fixed unit. There is a second stop surface for the drive (16) and a free space receiving a contact spring with a push part against the contact bridge (17) opening out and the other against the container push surface.

Description

L'invention concerne un contacteur à commande électromécanique, du type comportant, dans un boîtier fixe :

  • au moins une paire de conducteurs portant chacun un contact fixe ;
  • au moins un pont de contact apte à occuper une position de fermeture dans laquelle il établit une connexion électrique entre les contacts fixes, et une position d'ouverture dans laquelle il se trouve à distance desdits contacts fixes ;
  • un ressort de contact associé audit pont de contact pour exercer, en position de fermeture, une pression entre ledit pont et lesdits contacts fixes ;
  • un électro-aimant comprenant :
    • une bobine ;
    • une armature fixe associée à ladite bobine ;
    • une armature mobile, située en regard de l'armature fixe, et apte à prendre une position de repos dans laquelle elle est située à distance d'entrefer de l'armature fixe, et une position de travail dans laquelle elle se trouve plaquée contre l'armature fixe, l'armature mobile étant sollicitée vers sa position de repos par un ressort de rappel ;
  • un actionneur couplé de façon bidirectionnelle à ladite armature mobile, ledit actionneur comportant :
    • une première surface de butée regardant vers l'armature mobile ;
    • une deuxième surface de butée regardant vers l'opposé de l'armature mobile ;

ledit actionneur étant adapté à entraîner ledit pont de contact vers sa position d'ouverture :
  • au moyen de la première surface de butée si ledit pont de contact est du type « à fermeture », c'est-à-dire agencé pour connecter les contacts fixes en position de travail de l'armature mobile ;
  • au moyen de la deuxième surface de butée et à l'encontre du ressort de rappel si ledit pont de contact est du type « à ouverture », c'est-à-dire agencé pour connecter les contacts fixes en position de repos de l'armature mobile.
The invention relates to a contactor with electromechanical control, of the type comprising, in a fixed housing:
  • at least one pair of conductors each carrying a fixed contact;
  • at least one contact bridge adapted to occupy a closed position in which it establishes an electrical connection between the fixed contacts, and an open position in which it is at a distance from said fixed contacts;
  • a contact spring associated with said contact bridge for exerting, in the closed position, a pressure between said bridge and said fixed contacts;
  • an electromagnet comprising:
    • a coil ;
    • a fixed armature associated with said coil;
    • a movable armature, located opposite the fixed armature, and adapted to take a rest position in which it is located at a distance from the gap of the fixed armature, and a working position in which it is pressed against the fixed armature, the movable armature being biased towards its rest position by a return spring;
  • an actuator bidirectionally coupled to said movable armature, said actuator comprising:
    • a first stop surface facing the movable armature;
    • a second abutment surface facing away from the movable armature;

said actuator being adapted to drive said contact bridge towards its open position:
  • by means of the first abutment surface if said contact bridge is of the "closed" type, that is to say arranged to connect the fixed contacts in the working position of the movable armature;
  • by means of the second abutment surface and against the return spring if said contact bridge is of the "open" type, that is to say arranged to connect the fixed contacts in the rest position of the mobile frame.

Un contacteur de ce type est connu du document FR-2 756 092 au nom de la demanderesse.A contactor of this type is known from FR-2 756 092 in the name of the applicant.

Bien que les contacteurs connus de ce type donnent entière satisfaction, l'on souhaite leur apporter quelque amélioration.Although known contactors of this type are entirely satisfactory, it is desired to provide them with some improvement.

En effet, qu'ils soient du type « à fermeture » ou du type « à ouverture », les ponts de contact sont embarqués sur l'actionneur avec leur ressort de contact.In fact, whether they are of the "closed" type or of the "open" type, the contact bridges are embedded on the actuator with their contact spring.

Le ressort de contact d'un pont de contact à ouverture agit donc à l'encontre du ressort de rappel de l'armature mobile puisqu'il la pousse vers sa position de travail tandis que le ressort de rappel la pousse vers sa position de repos.The contact spring of an opening contact bridge therefore acts against the return spring of the movable armature since it pushes it towards its working position while the return spring pushes it towards its rest position. .

Ceci nuit d'une part au bon positionnement de l'armature mobile en position de repos, et peut entraîner d'autre part un dysfonctionnement du contacteur en cas d'usure prématurée du ressort de rappel, l'armature mobile ayant alors des difficultés à retrouver sa position de repos.This affects firstly the good positioning of the armature in the rest position, and can also cause a malfunction of the contactor in case of premature wear of the return spring, the armature mobile then having difficulty in return to his rest position.

Le document FR-2 652 947 prévoit de constituer un appui fixe pour les ressorts de contact au moyen d'une plaquette montée fixement dans le boîtier.The document FR-2 652 947 provides for constituting a fixed support for the contact springs by means of a wafer fixedly mounted in the housing.

Cette disposition, dont la mise en oeuvre est délicate, bouleverserait l'agencement interne d'un contacteur du type décrit ci-dessus.This provision, the implementation of which is delicate, would upset the internal arrangement of a contactor of the type described above.

L'invention vise à fournir un contacteur du type prémentionné, qui soit à la fois fiable et de mise en oeuvre aisée, et qui fonctionne aussi bien avec des ponts de contact du type « à ouverture » qu'avec des ponts de contact du type « à fermeture ».The invention aims to provide a contactor of the aforementioned type, which is both reliable and easy to implement, and which works as well with contact bridges of the "open" type with contact bridges of the type "Closed".

A cet effet, l'invention propose un contacteur à commande électromécanique du type précité, caractérisé en ce que :

  • le boîtier présente une surface d'appui regardant vers ladite armature mobile ;
  • il existe, entre cette surface d'appui et ladite deuxième surface de butée de l'actionneur, un espace libre adapté à recevoir un dit ressort de contact, avec celui-ci en appui d'une part contre un pont de contact à ouverture, et d'autre part contre la surface d'appui du boîtier.
For this purpose, the invention proposes a contactor with electromechanical control of the aforementioned type, characterized in that:
  • the casing has a bearing surface facing towards said movable armature;
  • there exists, between this bearing surface and said second abutment surface of the actuator, a free space adapted to receive a said contact spring, with the latter bearing on the one hand against an opening contact bridge, and secondly against the bearing surface of the housing.

Ce ressort de contact est ainsi indépendant de l'actionneur, de sorte qu'il n'agit pas à l'encontre du ressort de rappel en position de repos de l'armature mobile.This contact spring is thus independent of the actuator, so that it does not act against the return spring in the rest position of the moving armature.

Le contacteur est ainsi plus rapide, plus précis et plus fiable.The contactor is thus faster, more accurate and more reliable.

Selon un mode de réalisation, l'actionneur comporte un bloc porte contact comportant au moins un compartiment susceptible de recevoir un pont de contact à fermeture.According to one embodiment, the actuator comprises a contact block having at least one compartment capable of receiving a closing contact bridge.

Ce compartiment est délimité longitudinalement par deux faces transversales en regard, dont l'une forme ladite première surface de butée, tandis que l'autre forme une surface d'appui pour le ressort du pont de contact de sorte que l'ensemble pont de contact - ressort se trouve embarqué dans ledit bloc porte contact.This compartment is delimited longitudinally by two opposite transverse faces, one of which forms said first abutment surface, while the other forms a bearing surface for the spring of the contact bridge so that the contact bridge assembly - Spring is embedded in said contact block.

Le compartiment est par exemple fermé, du côté de ladite surface d'appui du boîtier, par une cloison présentant deux faces opposées dont l'une, tournée vers l'intérieur du compartiment, forme la première surface de butée, tandis que l'autre forme la deuxième surface de butée.The compartment is for example closed, on the side of said bearing surface of the housing, by a partition having two opposite faces, one of which, turned towards the inside of the compartment, forms the first abutment surface, while the other forms the second abutment surface.

En outre, le bloc porte contact peut comporter un deuxième compartiment superposé au premier et séparé de lui par ladite cloison, ce deuxième compartiment étant susceptible de recevoir un pont de contact à ouverture.In addition, the contact block may comprise a second compartment superimposed on the first and separated from it by said partition, this second compartment being capable of receiving an opening contact bridge.

Ce deuxième compartiment peut être séparé de ladite surface d'appui du boîtier par une paroi dans laquelle est pratiqué un trou traversant formant un passage pour le ressort du pont de contact à ouverture.This second compartment can be separated from said bearing surface of the housing by a wall in which is formed a through hole forming a passage for the spring of the opening contact bridge.

De préférence, ce ressort présente, hors contrainte, un pas d'hélice dont la valeur est supérieure à celle de l'épaisseur de la paroi dans laquelle est pratiqué le trou traversant.Preferably, this spring has, excluding stress, a pitch of a helix whose value is greater than that of the thickness of the wall in which the through hole is made.

Selon un autre mode de réalisation, l'actionneur comporte un bloc porte contact comportant au moins un compartiment susceptible de recevoir un pont de contact à fermeture ou un pont de contact à ouverture.According to another embodiment, the actuator comprises a contact block comprising at least one compartment capable of receiving a closing contact bridge or an opening contact bridge.

Ce compartiment est par exemple délimité longitudinalement par deux faces opposées dont l'une forme ladite première surface de butée et l'autre forme ladite deuxième surface de butée, ledit compartiment étant séparé de ladite surface d'appui du boîtier par une paroi dont une face, tournée vers l'intérieur du compartiment, forme ladite première surface d'appui, et dans laquelle est pratiqué un trou traversant formant un passage pour le ressort du pont de contact à ouverture.This compartment is for example delimited longitudinally by two opposite faces, one of which forms said first abutment surface and the other forms said second abutment surface, said compartment being separated from said bearing surface of the casing by a wall of which one face , turned towards the inside of the compartment, forms said first bearing surface, and in which is formed a through hole forming a passage for the spring of the opening contact bridge.

Par exemple, l'actionneur est à section en forme de U encadrant l'armature fixe, et comporte une base transversale formant ledit bloc porte contact, ainsi que deux branches longitudinales en regard, saillant du bloc porte contact, et fixée chacune par une extrémité à ladite armature mobile.For example, the actuator is U-shaped section flanking the fixed armature, and has a transverse base forming said door block contact, and two longitudinal branches facing, projecting from the contact block, and each fixed at one end to said movable armature.

Par ailleurs, et selon un mode de réalisation, le ressort de rappel est situé entre le bloc porte contact et le boîtier, sur lesquels il prend appui.Furthermore, and according to one embodiment, the return spring is located between the contact block and the housing, on which it bears.

De préférence, le ressort de rappel prend appui sur la surface d'appui du boîtier.Preferably, the return spring is supported on the bearing surface of the housing.

Par exemple, le ressort de rappel est d'une part inséré dans un puits du bloc porte contact, et d'autre part emmanché sur un téton saillant du boîtier.For example, the return spring is firstly inserted into a well of the contact block, and secondly fitted on a protruding stud of the housing.

Selon un mode de réalisation, ce puits se trouve entre deux porte contact du bloc porte contact, chaque porte contact comportant au moins un compartiment tel que décrit ci-dessus.According to one embodiment, this well is between two contact door of the contact block, each contact door having at least one compartment as described above.

D'autres objets et avantages de l'invention apparaîtront à la lumière de la description qui va suivre de modes de réalisation de l'invention, fournis à titre d'exemples non limitatifs, description faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective éclatée d'un contacteur conforme à l'invention ;
  • la figure 2 est une vue en perspective d'un contacteur conforme à l'invention, assemblé, et dont le corps de boîtier est partiellement arraché pour laisser entrevoir des éléments constitutifs du contacteur ; ce dernier est représenté suivant un mode de fonctionnement du type « à fermeture », en position de repos de l'armature mobile de son électro-aimant ;
  • la figure 3 est une représentation du contacteur de la figure 2 suivant un autre angle de vue ;
  • la figure 4 est une vue similaire à la figure 2, sur laquelle le contacteur est représenté en position de travail de l'armature mobile ;
  • la figure 5 est une représentation du contacteur de la figure 4 suivant le même angle de vue qu'à la figure 3 ;
  • la figure 6 est une représentation schématique en coupe partielle du contacteur des figures 2 à 5, dans la position des figures 2 et 3 ;
  • la figure 7 est une représentation schématique du contacteur de la figure 6, dans la position des figures 4 et 5 ;
  • les figures 8 à 11 sont des vues analogues respectivement aux figures 2 à 7, le contacteur étant représenté suivant un mode de fonctionnement du type « à ouverture » ;
  • les figures 12 et 13 sont des représentations schématiques analogues respectivement aux figures 6 et 7, du contacteur représenté sur les figures 8 à 11 ;
  • la figure 14 est une vue en perspective en arraché du contacteur de la figure 2, suivant un autre angle de vue ; et
  • la figure 15 est une représentation partielle du contacteur de la figure 14, suivant un autre angle de vue.
Other objects and advantages of the invention will become apparent in the light of the following description of embodiments of the invention, provided by way of non-limiting examples, a description given with reference to the appended drawings in which:
  • Figure 1 is an exploded perspective view of a contactor according to the invention;
  • Figure 2 is a perspective view of a contactor according to the invention, assembled, and the housing body is partially torn to reveal the constituent elements of the contactor; the latter is represented according to a mode of operation of the "closing" type, in the rest position of the movable armature of its electromagnet;
  • Figure 3 is a representation of the contactor of Figure 2 according to another angle of view;
  • Figure 4 is a view similar to Figure 2, wherein the switch is shown in the working position of the movable armature;
  • Figure 5 is a representation of the contactor of Figure 4 according to the same angle of view as in Figure 3;
  • Figure 6 is a schematic representation in partial section of the contactor of Figures 2 to 5, in the position of Figures 2 and 3;
  • Figure 7 is a schematic representation of the switch of Figure 6, in the position of Figures 4 and 5;
  • Figures 8 to 11 are views similar respectively to Figures 2 to 7, the switch being shown in an operating mode of the type "opening";
  • Figures 12 and 13 are diagrammatic representations respectively in Figures 6 and 7, the contactor shown in Figures 8 to 11;
  • Figure 14 is a cutaway perspective view of the contactor of Figure 2, according to another angle of view; and
  • Figure 15 is a partial representation of the contactor of Figure 14, according to another angle of view.

Sur les figures est représenté un contacteur 1 à commande électromécanique du type conçu notamment pour connecter au réseau de distribution électrique un appareil électrique (non représenté).In the figures is shown a contactor 1 with electromechanical control of the type designed in particular for connecting to the electrical distribution network an electrical device (not shown).

Le contacteur 1 comporte un boîtier 2 dans lequel est logé un électro-aimant 3 dont l'alimentation pilote le fonctionnement de l'appareil électrique.The contactor 1 comprises a housing 2 in which is housed an electromagnet 3 whose power control the operation of the electrical apparatus.

Le boîtier 2 comprend un corps de boîtier 4 destiné à être fixé de manière amovible sur un rail d'une armoire électrique (non représentés) au moyen d'un système d'accrochage composé d'une paire de griffes 5, 6 en regard, dont l'une 5 au moins est coulissante, et est sollicitée vers l'autre 6 par un ressort de rappel 7. Le boîtier 2 comprend en outre un couvercle 8 qui surmonte le corps de boîtier 4 en étant à la fois emboîté et encliqueté dans celui-ci. Le couvercle 8 est en forme de chapeau et présente un nez 9 destiné à être engagé dans la fenêtre d'un plastron (non représenté) de l'armoire électrique, pour ménager un accès au moins visuel au contacteur 1.The housing 2 comprises a housing body 4 intended to be removably attached to a rail of an electrical cabinet (not shown) by means of a fastening system consisting of a pair of claws 5, 6 facing each other, at least one of which is sliding, and is urged towards the other 6 by a return spring 7. The casing 2 further comprises a cover 8 which overcomes the casing body 4 while being both snapped and snapped into this one. The cover 8 is in the form of a cap and has a nose 9 intended to be engaged in the window of a plastron (not shown) of the electrical cabinet, to provide at least visual access to the contactor 1.

L'électro-aimant 3 comprend d'une part, une partie fixe 10 incluant une bobine 11 supportée par une carcasse 12 fixée au boîtier 2 ainsi qu'une armature fixe 13 associée à la bobine 11, et, d'autre part, une armature mobile 14 située en regard de l'armature fixe 13.The electromagnet 3 comprises, on the one hand, a fixed part 10 including a coil 11 supported by a casing 12 fixed to the casing 2 as well as a fixed armature 13 associated with the coil 11, and, on the other hand, a mobile armature 14 located opposite the fixed armature 13.

L'armature mobile 14 est apte à prendre une position de repos (figures 2, 3, 6, 8, 9, 12, 14) dans laquelle elle est écartée de l'armature fixe 13 en étant située à distance d'entrefer de celle-ci, et une position de travail (figures 4, 5, 7, 10, 11, 13) dans laquelle elle se trouve plaquée contre l'armature fixe 13. L'armature mobile 14 est sollicitée vers sa position de repos par un ressort de rappel 15 qui prend appui contre le corps de boîtier 4.The movable armature 14 is adapted to take a rest position (FIGS. 2, 3, 6, 8, 9, 12, 14) in which it is spaced apart from the fixed armature 13 while being situated at an air gap distance from that and a working position (FIGS. 4, 5, 7, 10, 11, 13) in which it is pressed against the fixed armature 13. The moving armature 14 is biased towards its rest position by a return spring 15 which bears against the casing body 4.

En position de repos, l'armature mobile 14 se trouve escamotée dans le nez 9 du couvercle 8, qui forme ainsi un logement pour la recevoir (figures 2, 8).In the rest position, the mobile armature 14 is retracted into the nose 9 of the cover 8, which thus forms a housing for receiving it (FIGS. 2, 8).

Un actionneur 16 se trouve couplé à l'armature mobile 14 pour entraîner un pont de contact 17, 17' apte à établir une liaison électrique entre un premier et un deuxième conducteurs 18, 19, montés dans le corps de boîtier 4, et situés en regard.An actuator 16 is coupled to the moving armature 14 to drive a contact bridge 17, 17 'adapted to establish an electrical connection between a first and a second conductor 18, 19, mounted in the housing body 4, and located in look.

Tel qu'il apparaît sur la figure 1, le contacteur 1, du type bipolaire, comprend deux premiers conducteurs 18 et deux deuxièmes conducteurs 19.As it appears in FIG. 1, the contactor 1, of the bipolar type, comprises two first conductors 18 and two second conductors 19.

Pour sa connexion au réseau électrique, le contacteur 1 comporte deux premières bornes de puissance 20 disposées d'un même côté du boîtier 2, et dont l'une est destinée à raccorder l'un des premiers conducteurs 18 à un pôle du réseau, tandis que l'autre est destinée à raccorder l'autre premier conducteur 18 à un autre pôle du réseau.For its connection to the electrical network, the contactor 1 comprises two first power terminals 20 arranged on the same side of the housing 2, one of which is intended to connect one of the first conductors 18 to a pole of the network, while that the other is intended to connect the other first conductor 18 to another pole of the network.

Deux deuxièmes bornes de puissance 21 sont également prévues pour raccorder de la même manière les deuxièmes conducteurs 19 à l'appareil électrique.Two second power terminals 21 are also provided for similarly connecting the second conductors 19 to the electrical apparatus.

Tel qu'il apparaît sur la figure 1, chaque borne de puissance 20, 21 est agencée pour pincer un fil électrique dénudé du réseau électrique.As shown in Figure 1, each power terminal 20, 21 is arranged to clamp a stripped electrical wire of the power grid.

A cet effet, chaque borne 20, 21 comporte un élément de connexion mobile 22 monté coulissant dans le corps de boîtier 4, le coulissement de cet élément 22 étant commandé par une vis de serrage 23 engagée dans un trou 24 du couvercle 8, et qui, prenant appui sur le conducteur 18, 19, provoque par sa rotation le pincement du fil dénudé entre l'élément de connexion 22 et le conducteur 18, 19, sur lequel est engagé l'élément de connexion 22.For this purpose, each terminal 20, 21 comprises a movable connecting element 22 slidably mounted in the housing body 4, the sliding of this element 22 being controlled by a clamping screw 23 engaged in a hole 24 of the cover 8, and which , bearing on the conductor 18, 19, causes by its rotation the pinching of the stripped wire between the connection element 22 and the conductor 18, 19, on which the connection element 22 is engaged.

Chaque borne de puissance 20, 21 est montée dans le corps de boîtier 4 en regard d'une fenêtre 25 pratiquée dans celui-ci pour le passage du fil dénudé correspondant du réseau électrique.Each power terminal 20, 21 is mounted in the housing body 4 opposite a window 25 formed therein for the passage of the corresponding stripped wire of the electrical network.

Afin de détromper l'utilisateur du contacteur 1 lors de la connexion de celui-ci au réseau ou à l'appareil électrique, l'élément de connexion 22 présente une saillie 26 formant un volet susceptible d'obturer la fenêtre 25 lors du coulissement de l'élément 22 (figure 2).In order to deter the user of the contactor 1 when the latter is connected to the network or electrical apparatus, the connection element 22 has a projection 26 forming a flap capable of closing the window 25 during the sliding of the the element 22 (Figure 2).

Le contacteur 1 comprend en outre deux bornes de commande 27 pour le raccordement de la bobine à un circuit de commande d'alimentation de celle-ci.The contactor 1 further comprises two control terminals 27 for connecting the coil to a power control circuit thereof.

Chaque premier conducteur 18 présente une partie extrême 28 dont le bout porte ou forme un contact fixe 29, tandis que chaque deuxième conducteur 19 présente une partie extrême 30 disposée en regard de la partie extrême 28 du premier conducteur 18, cette partie extrême 30 portant ou formant également un contact fixe 31.Each first conductor 18 has an end portion 28 whose end carries or forms a fixed contact 29, while each second conductor 19 has an end portion 30 disposed facing the end portion 28 of the first conductor 18, this end portion 30 carrying or also forming a fixed contact 31.

Chaque pont de contact 17, 17' se présente quand à lui sous la forme d'une lamelle conductrice dont les bouts portent ou forment un contact mobile 32, 33 susceptible d'être appliqué contre un contact fixe 29, 31 pour relier entre eux les conducteurs 18, 19.Each contact bridge 17, 17 'is in turn itself in the form of a conductive strip whose ends carry or form a movable contact 32, 33 may be applied against a fixed contact 29, 31 to connect them conductors 18, 19.

Le pont de contact 17, 17' est apte à occuper une position de fermeture dans laquelle il établit une connexion électrique entre les contacts fixes 29, 31 par l'intermédiaire, respectivement, des contacts mobiles 32, 33, et une position d'ouverture dans laquelle il se trouve à distance des conducteurs 18, 19, ces contacts mobiles 32, 33 étant alors écartés des contacts fixes 29, 31.The contact bridge 17, 17 'is able to occupy a closed position in which it establishes an electrical connection between the fixed contacts 29, 31 via, respectively, movable contacts 32, 33, and an open position in which it is at a distance from the conductors 18, 19, these movable contacts 32, 33 then being spaced apart from the fixed contacts 29, 31.

Les positions du pont de contact 17, 17' sont commandées par l'électro-aimant 3, et plus spécifiquement par le mouvement de l'armature mobile 14.The positions of the contact bridge 17, 17 'are controlled by the electromagnet 3, and more specifically by the movement of the mobile armature 14.

On distingue deux modes de fonctionnement du contacteur 1, à savoir un mode de fonctionnement dit « à fermeture », et un mode de fonctionnement dit « à ouverture ».There are two modes of operation of the contactor 1, namely a mode of operation called "closing", and a mode of operation said "open".

Dans le mode de fonctionnement du type à fermeture, le pont de contact 17 est agencé pour occuper sa position de fermeture, c'est-à-dire connecter les contacts fixes 29, 31, en position de travail de l'armature mobile 14, tel qu'il apparaît sur les figures 4 et 5, ainsi que sur la figure 7. Un tel pont de contact 17 est dit du type « à fermeture ».In the operating mode of the closing type, the contact bridge 17 is arranged to occupy its closed position, that is to say connect the fixed contacts 29, 31, in the working position of the mobile armature 14, as shown in FIGS. 4 and 5, as well as in FIG. 7. Such a contact bridge 17 is said to be of the "closed" type.

En position de repos de l'armature mobile 14, le pont de contact 17 occupe sa position d'ouverture, tel qu'il apparaît sur les figures 2 et 3, ainsi que sur la figure 6.In the rest position of the mobile armature 14, the contact bridge 17 occupies its open position, as it appears in FIGS. 2 and 3, as well as in FIG.

En position de travail de l'armature mobile 14, le pont de contact 17 occupe sa position de fermeture, tel qu'il apparaît sur les figures 4, 5, ainsi que sur la figure 7.In the working position of the movable armature 14, the contact bridge 17 occupies its closed position, as it appears in FIGS. 4, 5 and 7.

Dans le mode de fonctionnement à ouverture, le pont de contact, référencé 17' à des fins de clarté, est agencé pour occuper sa position de fermeture, c'est-à-dire pour connecter les contacts fixes 29, 31, en position de repos de l'armature mobile 14, tel qu'il apparaît sur les figures 8 et 9, ainsi que sur la figure 12. Un tel pont de contact 17' est dit du type « à ouverture ».In the open mode of operation, the contact bridge, referenced 17 'for the sake of clarity, is arranged to occupy its closed position, that is to say to connect the fixed contacts 29, 31, in the position of rest of the mobile armature 14, as shown in Figures 8 and 9, as well as in Figure 12. Such a contact bridge 17 'is said to type "open".

En position de travail de l'armature mobile 14, le pont de contact 17' occupe sa position d'ouverture, tel qu'il apparaît sur les figures 10 et 11, ainsi que sur la figure 13.In the working position of the mobile armature 14, the contact bridge 17 'occupies its open position, as it appears in FIGS. 10 and 11, as well as in FIG. 13.

Le contacteur 1 est agencé pour fonctionner tant à l'ouverture qu'à la fermeture, tel qu'il ressort de ce qui va suivre.The contactor 1 is arranged to operate both on opening and on closing, as is apparent from what follows.

L'actionneur 16 présente une section en forme de U et comprend une base transversale formant un bloc porte contact 34 dont saillent deux branches parallèles en regard 35 qui présentent chacune une extrémité 36 engagée sur le bout d'une tige 37 transversale passant dans un alésage de l'armature mobile 14, de sorte que l'actionneur 16 se trouve couplé à l'armature mobile 14.The actuator 16 has a U-shaped section and comprises a transverse base forming a contact block 34 which project two parallel parallel branches 35 which each have an end 36 engaged on the end of a transverse rod 37 passing through a bore of the mobile armature 14, so that the actuator 16 is coupled to the movable armature 14.

Le bloc porte contact 34 comprend deux porte contact 38 jumelés situés sensiblement dans le prolongement des branches 35.The contact block 34 comprises two paired contact doors 38 located substantially in the extension of the branches 35.

Chaque porte contact 38 comprend deux compartiments superposés, à savoir un compartiment supérieur 39 adapté à recevoir un pont de contact 17 du type à fermeture, ainsi qu'un compartiment inférieur 40 adapté à recevoir un pont de contact 17' du type à ouverture.Each contact door 38 comprises two superimposed compartments, namely an upper compartment 39 adapted to receive a contact bridge 17 of the closing type, and a lower compartment 40 adapted to receive a contact bridge 17 'of the opening type.

Le compartiment supérieur 39 et le compartiment inférieur 40 sont séparés l'un de l'autre par une cloison 41 présentant deux faces opposées formant respectivement une première surface de butée 42 regardant vers l'armature mobile 14, et une deuxième surface de butée 43 regardant vers l'opposé.The upper compartment 39 and the lower compartment 40 are separated from each other by a partition 41 having two opposite faces respectively forming a first abutment surface 42 looking towards the movable armature 14, and a second abutment surface 43 looking at to the opposite.

Le compartiment supérieur 39 est délimité longitudinalement d'une part par la première surface de butée 42, d'autre part par une face transversale 44 en regard de celle-ci, et, transversalement, par deux parois supérieures 75, longitudinales, en regard.The upper compartment 39 is delimited longitudinally on the one hand by the first abutment surface 42, on the other by a transverse face 44 facing it, and, transversely, by two upper longitudinal walls 75, facing each other.

En mode de fonctionnement à fermeture, un pont de contact 17 du type à fermeture se trouve inséré dans le compartiment supérieur 39 en étant sollicité vers sa position de fermeture par un ressort de contact 45 fonctionnant à la compression, qui lui est associé, et qui prend appui d'une part sur le pont de contact 17, et d'autre part contre la face transversale 44, de sorte que l'ensemble pont de contact 17- ressort 45 se trouve embarqué dans le bloc porte contact 34.In the closed operating mode, a contact bridge 17 of the closing type is inserted in the upper compartment 39 being biased towards its closed position by a contact spring 45 operating at the compression, which is associated with it, which is supported on the one hand on the contact bridge 17, and on the other hand against the transverse face 44, so that the contact bridge assembly 17- spring 45 is embedded in the contact block 34.

Afin d'éviter tout débattement du ressort de contact 45, son extrémité située du côté de la face transversale 44 est emmanchée sur un téton 76 saillant de celle-ci, tandis que son extrémité opposée est logée dans une réserve en creux 77 ménagée dans le pont de contact 17, en s'y trouvant maintenue par l'intermédiaire des parois supérieures 75.In order to avoid any displacement of the contact spring 45, its end located on the side of the transverse face 44 is fitted on a pin 76 projecting from it, while its opposite end is housed in a recessed reserve 77 formed in the contact bridge 17, being maintained therein through the upper walls 75.

Accompagnant l'armature mobile 14, le bloc porte contact 34 se déplace longitudinalement dans un espace 46 ménagé entre, d'une part l'électro-aimant 3, plus particulièrement l'armature fixe 13, et d'autre part une paroi de fond 47 du corps de boîtier 4.Accompanying the movable armature 14, the contact block 34 moves longitudinally in a space 46 formed between, on the one hand the electromagnet 3, more particularly the fixed armature 13, and on the other hand a bottom wall 47 of the casing body 4.

En position de travail de l'armature mobile 14, tel qu'il apparaît sur les figures 4, 5, 7, le pont de contact 17 se trouve plaqué contre les conducteurs 18,19 et maintenu dans cette position par l'intermédiaire du ressort de contact 45 qui se trouve comprimé entre le pont de contact 17 et la face 44.In the working position of the mobile armature 14, as shown in FIGS. 4, 5, 7, the contact bridge 17 is pressed against the conductors 18, 19 and held in this position via the spring contact 45 which is compressed between the contact bridge 17 and the face 44.

Lorsque l'armature mobile 14 reprend sa position de repos, vers laquelle elle est sollicitée par le ressort de rappel 15, le pont de contact 17 se trouve décollé du conducteur 18, 19 en étant entraîné vers sa position d'ouverture par l'actionneur 16, au moyen de la première surface de butée 42, contre laquelle se trouve plaqué le pont de contact 17 par la détente du ressort de contact 45 (figures 2, 3, 6).When the armature 14 resumes its rest position, to which it is urged by the return spring 15, the contact bridge 17 is detached from the conductor 18, 19 being driven to its open position by the actuator 16, by means of the first abutment surface 42, against which the contact bridge 17 is pressed by the expansion of the contact spring 45 (FIGS. 2, 3, 6).

Le compartiment inférieur 40 est quant à lui délimité longitudinalement, d'une part par la cloison 41, et d'autre part par une paroi 48 sensiblement parallèle à la cloison 41, formant une extrémité libre de l'actionneur 16, et séparant le compartiment inférieur 40 de la paroi de fond 47. Le compartiment inférieur 40 est délimité transversalement par deux parois inférieures 78, longitudinales, en regard.The lower compartment 40 is itself delimited longitudinally, on the one hand by the partition 41, and on the other hand by a wall 48 substantially parallel to the partition 41, forming a free end of the actuator 16, and separating the compartment lower 40 of the bottom wall 47. The lower compartment 40 is defined transversely by two lower walls 78, longitudinal, opposite.

Dans le mode de fonctionnement à ouverture du contacteur 1, un pont de contact 17' à ouverture se trouve inséré dans le compartiment inférieur 40.In the open mode of the contactor 1, a contact bridge 17 'with opening is inserted in the lower compartment 40.

En position de repos de l'armature mobile 14, tel qu'il apparaît sur les figures 8, 9, 12, le pont de contact 17' se trouve collé contre les conducteurs 18, 19 en étant maintenu dans cette position par un ressort de contact 49 à compression qui prend appui d'une part sur le pont de contact 17', et d'autre part sur une surface d'appui 50 de la paroi de fond 47 du corps de boîtier 4, tournée vers l'armature mobile 14.In the rest position of the movable armature 14, as it appears in FIGS. 8, 9, 12, the contact bridge 17 'is glued against the conductors 18, 19 while being held in this position by a spring of contact 49 at compression which is supported on the one hand on the contact bridge 17 ', and on the other hand on a bearing surface 50 of the bottom wall 47 of the housing body 4, turned towards the mobile armature 14.

Afin de permettre cette disposition, il existe entre la deuxième surface de butée 43 et cette surface d'appui 50 un espace adapté à recevoir le ressort de contact 49.In order to allow this arrangement, there exists between the second abutment surface 43 and this bearing surface 50 a space adapted to receive the contact spring 49.

Il est ainsi pratiqué dans la paroi 48 du compartiment inférieur 40, un trou traversant 51 dans lequel est engagé le ressort de contact 49, de sorte que celui-ci ne se trouve pas embarqué dans le bloc porte contact 34, mais est indépendant de ce dernier.It is thus practiced in the wall 48 of the lower compartment 40, a through hole 51 in which is engaged the contact spring 49, so that it is not embedded in the contact block 34, but is independent of this latest.

Ainsi, en position de repos, l'armature mobile 14 ne se trouve sollicitée vers cette position que par son ressort de rappel 15.Thus, in the rest position, the movable armature 14 is only urged towards this position by its return spring 15.

Lorsque l'armature mobile 14 passe dans sa position de travail, tel qu'il apparaît sur les figures 10, 11, 13, l'actionneur 16 entraîne le pont de contact 17' vers sa position d'ouverture à l'encontre de son ressort de contact 49, au moyen de la deuxième surface de butée 43 et à l'encontre du ressort de rappel 15.When the moving armature 14 passes into its working position, as it appears in FIGS. 10, 11, 13, the actuator 16 drives the contact bridge 17 'towards its open position against its contact spring 49, by means of the second abutment surface 43 and against the return spring 15.

La paroi 48 permet notamment de rigidifier le bloc porte contact 34, tandis que le trou traversant 51, qui présente ici un diamètre légèrement supérieur à celui du ressort 49, permet d'éviter toute flexion et tout échappement intempestif de celui-ci.The wall 48 makes it possible in particular to stiffen the contact block 34, while the through hole 51, which here has a diameter slightly greater than that of the spring 49, avoids any bending and inadvertent escape thereof.

Et, afin d'éviter tout débattement du ressort de contact 49, son extrémité située du côté de la paroi de fond 47 est emmanchée sur un pion 52 saillant de la paroi de fond 47 du corps de boîtier 4 (figures 8, 9), tandis que son extrémité opposée est logée dans la réserve en creux 77 ménagée dans le pont de contact 17', en s'y trouvant maintenue par l'intermédiaire des parois inférieures 78.And, in order to avoid any displacement of the contact spring 49, its end located on the side of the bottom wall 47 is fitted on a pin 52 projecting from the bottom wall 47 of the casing body 4 (FIGS. 8, 9), while its opposite end is housed in the recessed reserve 77 formed in the contact bridge 17 ', being maintained there by means of the lower walls 78.

Par ailleurs, le ressort 49 présente, hors contrainte, un pas d'hélice, c'est-à-dire une distance entre deux spires successives, de valeur inférieure à celle de l'épaisseur de la cloison 48, de sorte à éviter tout risque d'engagement du ressort 49 avec la cloison 48 entre deux spires successives.Furthermore, the spring 49 has, without stress, a pitch of a helix, that is to say a distance between two successive turns, of value less than that of the thickness of the partition 48, so as to avoid any risk of engagement of the spring 49 with the partition 48 between two successive turns.

L'on décrit à présent l'électro-aimant 3 de manière plus détaillée.The electromagnet 3 is now described in more detail.

La carcasse 12 est à section sensiblement en forme de I, et comprend un socle 54 ainsi qu'un plateau 55 reliés par une âme centrale 56 creuse autour de laquelle est enroulée la bobine 11 qui se trouve emprisonnée entre le socle 54 et le plateau 55.The carcass 12 is substantially I-shaped section, and comprises a base 54 and a plate 55 connected by a hollow central core 56 around which is wound the coil 11 which is trapped between the base 54 and the plate 55.

Chaque armature 13, 14 présente une section en forme de E, et présente deux branches d'extrémité 57 encadrant la bobine 11 et sa carcasse 12, ainsi qu'une branche centrale 58 engagée à l'intérieur de l'âme 56.Each armature 13, 14 has an E-shaped section, and has two end branches 57 flanking the coil 11 and its carcass 12, as well as a central branch 58 engaged inside the core 56.

La carcasse 12 comporte quatre pieds 59 qui saillent du socle 54 en direction de la paroi de fond 47 du corps de boîtier 4.The carcass 12 has four feet 59 which project from the base 54 in the direction of the bottom wall 47 of the casing body 4.

Ce dernier comprend quant à lui quatre pattes 60, disposées en regard des pieds 59. Les pattes 60 saillent de la paroi de fond 47 avec laquelle ils sont venus de matière, en direction de la carcasse 12.The latter comprises four tabs 60 disposed opposite the feet 59. The tabs 60 protrude from the bottom wall 47 with which they are integral with respect to the carcass 12.

La partie extrême 30, 31 de chaque conducteur 18, 19 se trouve immobilisée en étant serrée, à proximité du contact fixe 29, 31, entre une première mâchoire appartenant au boîtier 2 et formée par l'une des pattes 60, et une deuxième mâchoire appartenant à la carcasse 12, et formée par le pied 59 correspondant.The end portion 30, 31 of each conductor 18, 19 is immobilized while being tight, close to the fixed contact 29, 31, between a first jaw belonging to the housing 2 and formed by one of the legs 60, and a second jaw belonging to the carcass 12, and formed by the foot 59 corresponding.

L'assemblage de la carcasse 12 au corps de boîtier 4 et le serrage des parties extrêmes 28, 30 des conducteurs 18, 19 sont assurés par deux vis 61.The assembly of the casing 12 to the casing body 4 and the tightening of the end portions 28, 30 of the conductors 18, 19 are provided by two screws 61.

Chaque vis 61 est insérée dans un trou traversant 62 pratiqué dans la paroi de fond 47 du corps de boîtier 4, et formant un passage pour la vis 61, celle-ci étant par ailleurs engagée dans un alésage fileté 63 du socle 54, situé en regard du trou traversant 62 et coaxial avec celui-ci.Each screw 61 is inserted into a through hole 62 formed in the bottom wall 47 of the housing body 4, and forming a passage for the screw 61, the latter being further engaged in a threaded bore 63 of the base 54, located in view of the through hole 62 and coaxial with it.

Afin d'assurer le guidage de la vis lors de l'assemblage de la carcasse 12 au corps de boîtier 4, le trou traversant 62 est pratiqué dans une cheminée 64 saillant de la paroi de fond 47 vers la carcasse 12.In order to ensure guiding of the screw during the assembly of the carcass 12 to the casing body 4, the through hole 62 is formed in a chimney 64 projecting from the bottom wall 47 towards the casing 12.

L'alésage 63 est quant à lui pratiqué dans un fût 65 saillant du socle 54 vers la paroi de fond 47, en regard de la cheminée 64.The bore 63 is in turn made in a barrel 65 protruding from the base 54 towards the bottom wall 47, opposite the chimney 64.

Lorsque la carcasse 12 se trouve assemblée au corps de boîtier 4, les parties extrêmes 28, 30 des conducteurs 18, 19 étant disposées entre les mâchoires 59, 60, il existe entre le corps de boîtier 4 et la carcasse 12, au niveau de la vis 61, un jeu J apte à permettre le serrage des parties extrêmes 28, 30 entre les mâchoires 59, 60 au moyen des vis 61.When the casing 12 is assembled to the casing body 4, the end portions 28, 30 of the conductors 18, 19 being disposed between the jaws 59, 60, exist between the casing body 4 and the casing 12, at the level of the casing. 61, a clearance J adapted to allow the clamping of the end portions 28, 30 between the jaws 59, 60 by means of the screws 61.

Ici, le jeu J est la distance qui sépare la cheminée 64 du fût 65 lorsque l'assemblage de la carcasse 12 au corps de boîtier 4 est réalisé, au moins avant que ne soit réalisé le serrage des conducteurs 18, 19.Here, the clearance J is the distance that separates the chimney 64 from the drum 65 when the assembly of the carcass 12 to the casing body 4 is made, at least before the tightening of the conductors 18, 19 is achieved.

En outre, afin de maintenir sur les vis 61 une tension permettant d'éviter leur desserrage, la paroi de fond 47 présente une capacité à fléchir lors du serrage des vis 61, en direction de la carcasse 12.In addition, in order to maintain a tension on the screws 61 which makes it possible to prevent their loosening, the bottom wall 47 has the ability to flex when the screws 61 are tightened, towards the carcass 12.

Ainsi, par son élasticité propre, la paroi de fond 47 exerce sur les vis 61 une traction qui freine leur libre rotation.Thus, by its own elasticity, the bottom wall 47 exerts on the screws 61 a traction that brakes their free rotation.

Lorsque le serrage des conducteurs 18, 19 est réalisé, le jeu J peut s'annuler, notamment par flexion de la paroi de fond 47, la cheminée 64 et le fût 65 venant alors en contact. On évite ainsi un serrage trop fort des vis 61, qui pourrait endommager, voire briser le corps de boîtier 4.When the tightening of the conductors 18, 19 is performed, the clearance J can be canceled, in particular by bending the bottom wall 47, the chimney 64 and the barrel 65 then coming into contact. This prevents too tight screws 61, which could damage or break the housing body 4.

Par ailleurs, l'actionneur 16 est guidé dans son mouvement par des rainures prévues à cet effet dans le corps de boîtier, tandis qu'il est sollicité vers la position de repos par le ressort de rappel 15 qui se trouve comprimé, dans l'espace 46, entre le bloc porte contact 34 et la paroi de fond 47 du corps de boîtier 4.Furthermore, the actuator 16 is guided in its movement by grooves provided for this purpose in the housing body, while it is biased towards the rest position by the return spring 15 which is compressed, in the space 46, between the contact block 34 and the bottom wall 47 of the casing body 4.

Afin d'assurer son guidage, le ressort de rappel 15 est d'une part inséré dans l'alésage d'un puits cylindrique 66 réalisé dans le bloc porte contact 34 et situé entre les porte contact 38.To ensure its guidance, the return spring 15 is firstly inserted into the bore of a cylindrical well 66 made in the contact block 34 and located between the contact holders 38.

Le ressort de rappel 15 est d'autre part emmanché sur un téton 53 formant une butée pour le ressort 15, et saillant de la paroi de fond 47 avec laquelle il est venu de matière.The return spring 15 is further fitted on a stud 53 forming a stop for the spring 15, and protruding from the bottom wall 47 with which it came from material.

Le contacteur 1 comporte d'autres éléments constitutifs, que l'on décrit succinctement à présent.The contactor 1 comprises other constituent elements, which are briefly described at present.

Il est prévu, entre autres, une platine 67 encliquetée dans le corps de boîtier 4, sur laquelle est monté coulissant un poussoir 68 mobile entre trois positions stables, à savoir une position de fonctionnement automatique, une position de fonctionnent forcé, ainsi qu'une position de mise hors service.Amongst others, there is provided a plate 67 snapped into the casing body 4, on which is slidably mounted a pusher 68 movable between three stable positions, namely an automatic operating position, a forced operating position, as well as a off position.

La platine 67 forme également un guide pour un levier 69 dont une extrémité est emmanchée sur la tige 37, tandis que l'autre extrémité forme un voyant 70 escamotable susceptible d'apparaître ou de disparaître, suivant la position de l'armature mobile 14, en regard d'une fenêtre 71 obturée par un volet 72 permettant un accès au poussoir 68.The plate 67 also forms a guide for a lever 69, one end of which is fitted on the rod 37, whereas the other end forms a retractable sight 70 which can appear or disappear, depending on the position of the mobile armature 14, facing a window 71 closed by a flap 72 allowing access to the pusher 68.

Par ailleurs, le socle 54 de la carcasse 12 présente, entre deux pieds 59 adjacents situés d'un même côté du socle 54, un logement 73 dans lequel est introduite l'armature fixe 13.Furthermore, the base 54 of the carcass 12 has, between two adjacent feet 59 situated on the same side of the base 54, a housing 73 into which the fixed armature 13 is introduced.

Ce logement 73 présente une surface de butée 74 transversale étendue entre les pieds 59, regardant vers la paroi de fond 47 du corps de boîtier 4, et contre laquelle est plaquée l'armature fixe 13 en position de travail de l'armature 14.This housing 73 has a transverse abutment surface 74 extending between the feet 59, looking towards the bottom wall 47 of the casing body 4, and against which the fixed armature 13 is pressed in the working position of the armature 14.

Par contre, en position de repos de cette dernière, il existe un jeu entre l'armature fixe 13 et cette surface de butée 73, tandis que le bloc porte contact 34 se trouve plaqué contre une nervure 79 du socle 54 (figures 6, 15 notamment).On the other hand, in the rest position of the latter, there is a clearance between the fixed armature 13 and this abutment surface 73, while the contact block 34 is pressed against a rib 79 of the base 54 (FIGS. especially).

Selon une première variante de réalisation non illustrée, chaque porte contact 38 comprend un unique compartiment du type du compartiment inférieur 40 décrit ci-dessus et adapté à recevoir aussi bien un pont de contact du type à fermeture qu'un pont de contact du type à ouverture.According to a first non-illustrated embodiment, each contact door 38 comprises a single compartment of the type of the lower compartment 40 described above and adapted to receive both a closure type contact bridge and a contact bridge of the type to opening.

Dans ce cas, la première surface de butée 42 est portée par la paroi 48 du compartiment, tandis que la deuxième surface de butée 43 est formée par une face transversale supérieure du compartiment, en regard de la première surface de butée 42.In this case, the first abutment surface 42 is carried by the wall 48 of the compartment, while the second abutment surface 43 is formed by an upper transverse face of the compartment, facing the first abutment surface 42.

Par ailleurs, il est possible, selon la configuration du contacteur 1, de n'employer qu'une seule vis de serrage 61, ou d'en employer un nombre strictement supérieur à deux.Moreover, it is possible, according to the configuration of the switch 1, to use only one clamping screw 61, or to use a number strictly greater than two.

En outre, afin de simplifier la fabrication du contacteur 1, il peut être avantageux de réaliser le filetage de l'alésage 63 lors de l'assemblage, au moyen de la vis 61 elle-même, cette dernière exerçant alors une fonction supplémentaire de taraud.In addition, to simplify the manufacture of the switch 1, it may be advantageous to thread the bore 63 during assembly, by means of the screw 61 itself, the latter then performing an additional tap function .

Et, selon une deuxième variante de réalisation non représentée, il est également possible de remplacer les vis 61 par d'autres moyens de serrage analogues permettant d'aboutir au même résultat. On pourra notamment employer des rivets ou des clous.And, according to a second alternative embodiment not shown, it is also possible to replace the screws 61 by other similar clamping means to achieve the same result. In particular, rivets or nails may be used.

Selon une troisième variante de réalisation, les conducteurs se trouvent immobilisés en étant serrés entre les mâchoires 59, 60, ailleurs qu'au niveau de leurs extrémités, selon la configuration du contacteur, la forme ou la disposition des conducteurs.According to a third embodiment, the conductors are immobilized by being clamped between the jaws 59, 60, elsewhere than at their ends, according to the configuration of the contactor, the shape or arrangement of the conductors.

Selon une quatrième variante non représentée, le contacteur est multipolaire, par exemple du type quadripolaire, le bloc porte contact comprenant à cet effet deux paires de porte contact, l'une de ces paires fonctionnant par exemple à l'ouverture, tandis que l'autre de ces paires fonctionne à la fermeture.According to a fourth variant not shown, the contactor is multipole, for example of the quadrupole type, the contact block comprising for this purpose two pairs of contact door, one of these pairs operating for example at the opening, while the other of these pairs works on closing.

Il est bien entendu possible de combiner entre elles les différentes variantes sans sortir du cadre de l'invention.It is of course possible to combine the various variants with each other without departing from the scope of the invention.

Claims (14)

  1. An electromechanically actuated contactor comprising in a fixed casing (2):
    - at least one pair of conductors (18, 19) each carrying a fixed contact (29, 31);
    - at least one contact bridge (17, 17') capable of occupying a closure position in which it establishes an electrical connection between the fixed contacts (29, 31) and an open position in which it is disposed at a spacing from said fixed contacts (29, 31);
    - a contact spring (45, 49) associated with said contact bridge (17, 17') for applying in the closure position a pressure between said bridge (17, 17') and said fixed contacts (29, 31);
    - a solenoid (3) comprising:
    - a coil (11);
    - a fixed armature (13) associated with said coil (11); and
    - a movable armature (14) disposed in facing relationship with the fixed armature (13) and capable of assuming a rest position in which it is disposed at an air-gap spacing from the fixed armature (13) and a working position in which it is caused to bear against the fixed armature (13), the movable armature (14) being urged towards its rest position by a return spring (15);
    - an actuator (16) bidirectionally coupled to said movable armature (14), said actuator (16) comprising:
    - a first abutment surface (42) facing towards the movable armature (14); and
    - a second abutment surface (43) facing in the opposite direction to the movable armature (14);

    said armature (16) being adapted to entrain said contact bridge (17, 17') towards its open position:
    - by means of the first abutment surface (42) if said contact bridge (17) is of the 'closure' type, that is to say arranged to connect the fixed contacts (29, 31) in the working position of the movable armature (14); and
    - by means of the second abutment surface (43) and against the return spring (15) if said contact bridge (17') is of the 'opening' type, that is to say arranged to connect the fixed contacts (29, 31) in the rest position of the movable armature (14); said contactor (1) being characterised in that:
    - the casing (2) has a support surface (50) facing towards said movable armature (14); and
    - between said support surface (52) and said second abutment surface (43) of the actuator (16) there is a free space adapted to receive a said contact spring (49) with same in contact on the one hand against an opening-type contact bridge (17') and on the other hand against the support surface (50) of said casing (2).
  2. A contactor according to claim 1 characterised in that said actuator (16) comprises a contact carrier block (34) comprising at least one compartment (39) capable of receiving a closure-type contact bridge (17).
  3. A contactor according to claim 2 characterised in that said compartment (39) is delimited longitudinally by two facing transverse faces of which one forms said first abutment surface (42) while the other forms a support surface (44) for the spring (45) of the contact bridge (17) in such a way that the contact bridge (17) - spring (45) assembly is disposed in said contact carrier block (34).
  4. A contactor according to claim 3 characterised in that said compartment (39) is formed at the side of said support surface (50) of the casing (2) by a partition (41) having two opposite faces of which one which faces towards the interior of the compartment (39) forms the first abutment surface (42) while the other forms the second abutment surface (43).
  5. A contactor according to claim 4 characterised in that said contact carrier block (34) further comprises a second compartment (40) in superposed relationship with the first compartment (39) and separated therefrom by said partition (41), said second compartment (40) being capable of receiving an opening-type contact bridge (17').
  6. A contactor according to claim 5 characterised in that said second compartment (40) is separated from said support surface (50) of the casing (2) by a wall (48) in which there is provided a through hole (51) forming a passage for the spring (49) of the opening-type contact bridge (17').
  7. A contactor according to claim 6 characterised in that said spring (49) of the opening-type contact bridge (17') has in the unstressed condition a coil pitch, the value of which is greater than that of the thickness of said wall (48).
  8. A contactor according to claim 1 characterised in that said actuator (16) comprises a contact carrier block (34) comprising at least one compartment capable of receiving a closure-type contact bridge (17) or an opening-type contact bridge (17').
  9. A contactor according to claim 8 characterised in that said compartment is delimited longitudinally by two opposite faces of which one forms said first abutment surface (42) and the other forms said second abutment surface (43), said compartment being separated from said support surface of the casing by a wall of which a face which is directed towards the interior of the compartment forms said first support surface and in which there is provided a through hole forming a passage for the spring (49) of the opening-type contact bridge (17').
  10. A contactor according to one of claims 2 to 9 characterised in that said actuator (16) is of a U-shaped section embracing the fixed armature and comprises a transverse base forming said contact carrier block (34) as well as two mutually facing arms (35) projecting from the contact carrier block (34), each being fixed by an end (36) to said movable armature (14).
  11. A contactor according to one of claims 2 to 10 characterised in that said return spring (15) is disposed between the contact carrier block (34) and the casing (2), against which it bears.
  12. A contactor according to claim 11 characterised in that said return spring (15) is supported against said support surface (50).
  13. A contactor according to claim 12 characterised in that said return spring (15) is on the one hand inserted into a hole (66) in said contact carrier block (34) and on the other hand engaged on to a projection (53) protruding from the casing (2).
  14. A contactor according to claim 13 characterised in that said hole (66) is between two contact carriers (38) of the contact carrier block (34), each contact carrier (38) comprising at least one said compartment.
EP01403376A 2000-12-28 2001-12-27 Electromechanical contactor having a contact bridge with independant spring Expired - Lifetime EP1220255B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0017217A FR2819096B1 (en) 2000-12-28 2000-12-28 CONTACTOR WITH ELECTROMECHANICAL CONTROL COMPRISING AN OPENING CONTACT BRIDGE OF WHICH THE SPRING IS INDEPENDENT
FR0017217 2000-12-28

Publications (2)

Publication Number Publication Date
EP1220255A1 EP1220255A1 (en) 2002-07-03
EP1220255B1 true EP1220255B1 (en) 2006-03-01

Family

ID=8858337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01403376A Expired - Lifetime EP1220255B1 (en) 2000-12-28 2001-12-27 Electromechanical contactor having a contact bridge with independant spring

Country Status (6)

Country Link
EP (1) EP1220255B1 (en)
AT (1) ATE319182T1 (en)
DE (1) DE60117512T2 (en)
ES (1) ES2258518T3 (en)
FR (1) FR2819096B1 (en)
PL (1) PL199356B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108620865B (en) * 2017-03-22 2024-03-08 浙江正泰电器股份有限公司 Contactor production line

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1831287U (en) * 1956-11-13 1961-05-18 Licentia Gmbh SUSPENSION OF THE MAGNETIC ARMATURE ON THE MOVABLE SWITCH HEAD OF A MAGNETIC SWITCH, MADE OF INSULATING MATERIAL.
DE1239752B (en) * 1964-09-12 1967-05-03 Continental Elektro Ind Ag Detachable connection of a device unit
CH429943A (en) * 1966-02-09 1967-02-15 Maier & Cie C Magnet coil with contact
EP0645792B1 (en) * 1993-09-27 1995-06-07 Hager Electro S.A. Arc chambers defining unit

Also Published As

Publication number Publication date
DE60117512D1 (en) 2006-04-27
PL351299A1 (en) 2002-07-01
ES2258518T3 (en) 2006-09-01
FR2819096B1 (en) 2003-03-28
FR2819096A1 (en) 2002-07-05
DE60117512T2 (en) 2006-10-19
EP1220255A1 (en) 2002-07-03
ATE319182T1 (en) 2006-03-15
PL199356B1 (en) 2008-09-30

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