EP0938120B1 - Multipole electromagnetic contactor with a bridging contact having an improved insulation between the different poles - Google Patents
Multipole electromagnetic contactor with a bridging contact having an improved insulation between the different poles Download PDFInfo
- Publication number
- EP0938120B1 EP0938120B1 EP19990400389 EP99400389A EP0938120B1 EP 0938120 B1 EP0938120 B1 EP 0938120B1 EP 19990400389 EP19990400389 EP 19990400389 EP 99400389 A EP99400389 A EP 99400389A EP 0938120 B1 EP0938120 B1 EP 0938120B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- insulating
- insulating support
- support
- bridge
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2008—Facilitate mounting or replacing contact bridge and pressure spring on carrier
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances
Definitions
- the present invention relates to a multi-pole electromechanical contactor comprising, in an insulating housing and for each pole, two fixed contacts each arranged on a fixed contact part and a movable contact bridge carrying two contacts each associated with a fixed contact, the contact bridges various poles being housed in an insulating support movable in translation in the housing.
- Document DE-31 46 780 discloses such a gentle support for the contact bridges, which follow one another in the main direction and are oriented perpendicular to it, housings delimited by intermediate partitions transverse to the main direction.
- the support has on one side a wall perpendicular to the partitions and connecting the latter to contribute to ensuring the desired isolation, while on the other side the isolation is provided by a cover or by a wall of the housing against which slides the support.
- the invention aims to increase the interpolar isolation distance achievable with a support of contact bridges in a contactor of the type described, while retaining good rigidity of this support. Another purpose is to simplify such a support.
- the insulating wall elements specific to neighboring housings are provided on either side of a mean longitudinal plane of the support so that these housings open respectively towards large opposite sides of the support.
- the insulating support has a cross section in the form of meanders providing, between the contact bridges whose housings open towards the same wall of the housing, an insulation distance equal to twice the interpolar pitch in the main direction.
- the wall elements are arranged symmetrically with respect to the average longitudinal plane, to alternate in succession in the direction of movement of the support.
- Contactor A is currently quadrupole, but could of course include a number of poles other than four. It comprises an insulating housing 10 which houses a control member not indicated, such as an electromagnet, and a support 20 of contact bridges B1-B4 able to move in translation in a main direction X as a function of the state of the control unit.
- a control member not indicated, such as an electromagnet
- a support 20 of contact bridges B1-B4 able to move in translation in a main direction X as a function of the state of the control unit.
- the support 20 has a general prismatic shape with a rectangular base, the contact bridges being distributed regularly over the height of the prism and extending parallel to the long side of the rectangular base of the prism.
- Each bridge B is placed with a helical return spring R in a housing L of the support, so as to be able to move relative to the support in the direction X against the return spring R; each bridge B carries at its ends two movable contacts Ca, Cb which cooperate with respective fixed contacts C'a, C'b themselves carried by fixed contact parts 11a, 11b held in the housing 10.
- Contact bridges B can be straight; in the illustrated embodiment, they are in the form of an omega having a central core 21 and wings 22, 23 offset relative to the core in the direction X of movement of the support, so as to be able to perform a contact function closing (bridges B1-B3) or opening contacts (bridge B4).
- the choice of their function is carried out as is known by simply reversing the bridge in its housing.
- the fixed contact parts 11a, 11b and the bridges B are oriented along their length in a direction Y orthogonal to X. It will be observed that the housings L are open laterally in the Y direction towards the walls 12, 13 of the housing 10 of the contactor.
- the mean longitudinal plane P of the support, parallel to the long sides of its base, is substantially the plane of longitudinal symmetry of the contact bridges B and is therefore parallel to X and Y.
- the support comprises between the bridges B1, B2; B2, B3; B3, B4 of the respective interpolar transverse partitions 31, 32, 33 which extend in planes perpendicular to the direction X and which contribute to the interpolar isolation; it also includes at its upper and lower ends partitions 34, 35 parallel to the interpolar partitions; the partitions 34, 35 increase the rigidity of the support and contribute to ensuring the isolation of the contacts with respect to the electromagnet.
- Successive wall elements 36,37,38,39 respectively connect the partitions 34,31; 31.32; 32.33; 33.35.
- These wall elements are parallel to X and to the mean longitudinal plane P of the support and are perpendicular to the partitions 31-35. They are located alternately symmetrically with respect to the mean plane P of the support, being in a way staggered, and giving the support, seen in cross section, a meandering shape (see FIG. 1).
- This arrangement ensures, in combination with the walls 12, 13 of the housing connected to the elements 36, 37, 38, 39 and against which these are guided when the support slides, excellent interpolar insulation.
- the bilateral arrangement of the insulating wall elements 36,37,38,39 ensures along the long sides of the support an insulation distance between contact bridges equal to twice the interpolar step p.
Description
La présente invention concerne un contacteur électromécanique multipolaire comprenant, dans un boîtier isolant et pour chaque pôle, deux contacts fixes disposés chacun sur une pièce de contact fixe et un pont de contact mobile portant deux contacts associés chacun à un contact fixe, les ponts de contact des divers pôles étant logés dans un support isolant mobile en translation dans le boîtier.The present invention relates to a multi-pole electromechanical contactor comprising, in an insulating housing and for each pole, two fixed contacts each arranged on a fixed contact part and a movable contact bridge carrying two contacts each associated with a fixed contact, the contact bridges various poles being housed in an insulating support movable in translation in the housing.
Le déplacement du support s'effectue selon une direction principale en fonction de l'état d'un organe de commande tel qu'un électroaimant. On connaît d'après le document DE-31 46 780 un tel support ménageant pour les ponts de contact, qui se succèdent selon la direction principale et sont orientés perpendiculairement à elle, des logements délimités par des cloisons intermédiaires transversales à la direction principale. Le support présente d'un côté une paroi perpendiculaire aux cloisons et reliant celles-ci pour contribuer à assurer l'isolement souhaité, tandis que de l'autre côté l'isolement est assuré par un couvercle ou par une paroi du boîtier contre laquelle glisse le support.The movement of the support takes place in a main direction as a function of the state of a control member such as an electromagnet. Document DE-31 46 780 discloses such a gentle support for the contact bridges, which follow one another in the main direction and are oriented perpendicular to it, housings delimited by intermediate partitions transverse to the main direction. The support has on one side a wall perpendicular to the partitions and connecting the latter to contribute to ensuring the desired isolation, while on the other side the isolation is provided by a cover or by a wall of the housing against which slides the support.
En l'absence de couvercle, le support connu présente une distance d'isolement interpolaire qui s'avère insuffisante dans certains cas.In the absence of a cover, the known support has an interpolar isolation distance which is insufficient in certain cases.
L'invention a pour but d'augmenter la distance d'isolement interpolaire réalisable avec un support de ponts de contact dans un contacteur du type décrit, tout en conservant une bonne rigidité de ce support. Elle a pour autre but de simplifier un-tel support.The invention aims to increase the interpolar isolation distance achievable with a support of contact bridges in a contactor of the type described, while retaining good rigidity of this support. Another purpose is to simplify such a support.
Selon l'invention, les éléments de paroi d'isolement propres à des logements voisins sont prévus de part et d'autre d'un plan longitudinal moyen du support de manière que ces logements s'ouvrent respectivement vers des grands côtés opposés du support. En d'autres termes, le support isolant a une section transversale en forme de méandres ménageant, entre les ponts de contact dont les logements s'ouvrent vers une même paroi du boîtier, une distance d'isolement égale au double du pas interpolaire dans la direction principale.According to the invention, the insulating wall elements specific to neighboring housings are provided on either side of a mean longitudinal plane of the support so that these housings open respectively towards large opposite sides of the support. In other words, the insulating support has a cross section in the form of meanders providing, between the contact bridges whose housings open towards the same wall of the housing, an insulation distance equal to twice the interpolar pitch in the main direction.
De préférence, les éléments de paroi sont disposés symétriquement par rapport au plan longitudinal moyen, pour se succéder de manière alternée dans la direction de déplacement du support.Preferably, the wall elements are arranged symmetrically with respect to the average longitudinal plane, to alternate in succession in the direction of movement of the support.
La description est faite ci-après d'un mode de réalisation non limitatif de l'invention, en regard des dessins annexés.
- La figure 1 représente en élévation latérale le support des ponts de contact dans un contacteur conforme à l'invention.
- La figure 2 montre le même support en élévation de face.
- La figure 3 représente en perspective le support et certains des contacts fixes associés.
- La figure 4 illustre l'introduction d'un pont de contact dans son logement.
- Figure 1 shows in side elevation the support of the contact bridges in a contactor according to the invention.
- Figure 2 shows the same support in front elevation.
- Figure 3 shows in perspective the support and some of the associated fixed contacts.
- Figure 4 illustrates the introduction of a contact bridge in its housing.
Le contacteur A est présentement quadripolaire, mais pourrait bien entendu comprendre un nombre de pôles différent de quatre. Il comporte un boîtier isolant 10 qui loge un organe de commande non indiqué, tel qu'un électroaimant, et un support 20 de ponts de contact B1-B4 apte à se déplacer en translation selon une direction principale X en fonction de l'état de l'organe de commande.Contactor A is currently quadrupole, but could of course include a number of poles other than four. It comprises an insulating housing 10 which houses a control member not indicated, such as an electromagnet, and a support 20 of contact bridges B1-B4 able to move in translation in a main direction X as a function of the state of the control unit.
Le support 20 a une forme générale prismatique à base rectangulaire, les ponts de contact étant répartis régulièrement sur la hauteur du prisme et s'étendant parallèlement au grand côté de la base rectangulaire du prisme. Chaque pont B est placé avec un ressort de rappel hélicoïdal R dans un logement L du support, de manière à pouvoir se déplacer relativement au support dans la direction X à l'encontre du ressort de rappel R ; chaque pont B porte à ses extrémités deux contacts mobiles Ca,Cb qui coopèrent avec des contacts fixes respectifs C'a,C'b eux-mêmes portés par des pièces de contact fixes 11a,11b maintenues dans le boîtier 10.The support 20 has a general prismatic shape with a rectangular base, the contact bridges being distributed regularly over the height of the prism and extending parallel to the long side of the rectangular base of the prism. Each bridge B is placed with a helical return spring R in a housing L of the support, so as to be able to move relative to the support in the direction X against the return spring R; each bridge B carries at its ends two movable contacts Ca, Cb which cooperate with respective fixed contacts C'a, C'b themselves carried by fixed contact parts 11a, 11b held in the housing 10.
Les ponts de contact B peuvent être de forme droite ; dans le mode de réalisation illustré, ils sont en forme d'omega présentant une âme centrale 21 et des ailes 22,23 déportées par rapport à l'âme dans la direction X de déplacement du support, de manière à pouvoir assurer une fonction de contacts à fermeture (ponts B1-B3) ou de contacts à ouverture (pont B4). Le choix de leur fonction s'effectue comme on le sait par simple retournement du pont dans son logement.Contact bridges B can be straight; in the illustrated embodiment, they are in the form of an omega having a central core 21 and wings 22, 23 offset relative to the core in the direction X of movement of the support, so as to be able to perform a contact function closing (bridges B1-B3) or opening contacts (bridge B4). The choice of their function is carried out as is known by simply reversing the bridge in its housing.
Les pièces de contact fixe 11a,11b et les ponts B sont orientés selon leur longueur dans une direction Y orthogonale à X. On observera que les logements L sont ouverts latéralement dans la direction Y vers des parois 12, 13 du boîtier 10 du contacteur. Le plan longitudinal moyen P du support, parallèle aux grands côtés de sa base, est sensiblement le plan de symétrie longitudinal des ponts de contact B et est donc parallèle à X et Y.The fixed contact parts 11a, 11b and the bridges B are oriented along their length in a direction Y orthogonal to X. It will be observed that the housings L are open laterally in the Y direction towards the walls 12, 13 of the housing 10 of the contactor. The mean longitudinal plane P of the support, parallel to the long sides of its base, is substantially the plane of longitudinal symmetry of the contact bridges B and is therefore parallel to X and Y.
Le support comprend entre les ponts B1,B2 ; B2,B3 ; B3,B4 des cloisons transversales interpolaires respectives 31,32,33 qui s'étendent dans des plans perpendiculaires à la direction X et qui contribuent à l'isolement interpolaire ; il comprend aussi à ses extrémités haute et basse des cloisons 34,35 parallèles aux cloisons interpolaires ; les cloisons 34,35 augmentent la rigidité du support et contribuent à assurer l'isolement des contacts vis à vis de l'électroaimant.The support comprises between the bridges B1, B2; B2, B3; B3, B4 of the respective interpolar transverse partitions 31, 32, 33 which extend in planes perpendicular to the direction X and which contribute to the interpolar isolation; it also includes at its upper and lower ends partitions 34, 35 parallel to the interpolar partitions; the partitions 34, 35 increase the rigidity of the support and contribute to ensuring the isolation of the contacts with respect to the electromagnet.
Des éléments de paroi successifs 36,37,38,39 relient respectivement les cloisons 34,31 ; 31,32 ; 32,33 ; 33,35. Ces éléments de paroi sont parallèles à X et au plan longitudinal moyen P du support et sont perpendiculaires aux cloisons 31-35. Ils sont situés en alternance symétriquement par rapport au plan moyen P du support, en étant en quelque sorte quinconcés, et donnant au support, vu en coupe transversale, une forme en méandres (voir figure 1). Cette disposition assure, en combinaison avec les parois 12,13 du boîtier connexes aux éléments 36,37,38,39 et contre lesquelles celles-ci sont guidées lors du coulissement du support, un excellent isolement interpolaire. La disposition bilatérale des éléments de paroi d'isolement 36,37,38,39 assure le long des grands côtés du support une distance d'isolement entre ponts de contact égale au double du pas interpolaire p.Successive wall elements 36,37,38,39 respectively connect the partitions 34,31; 31.32; 32.33; 33.35. These wall elements are parallel to X and to the mean longitudinal plane P of the support and are perpendicular to the partitions 31-35. They are located alternately symmetrically with respect to the mean plane P of the support, being in a way staggered, and giving the support, seen in cross section, a meandering shape (see FIG. 1). This arrangement ensures, in combination with the walls 12, 13 of the housing connected to the elements 36, 37, 38, 39 and against which these are guided when the support slides, excellent interpolar insulation. The bilateral arrangement of the insulating wall elements 36,37,38,39 ensures along the long sides of the support an insulation distance between contact bridges equal to twice the interpolar step p.
Le maintien des ponts B dans leurs logements L est assuré par des formes de retenue appropriées 40 (voir figure 4). L'introduction d'un pont B dans son logement est assurée par une ouverture 41 débouchant vers l'extérieur au moyen d'une rampe ou d'un pan coupé 42 prévu sur une partie centrale 43 du support pour recevoir en biais l'âme 21 du pont, tandis que des rampes 44 sont prévues sur les parties latérales 45 du support pour recevoir en biais les ailes 22,23 du pont. Cette disposition permet de maintenir les ponts de contact sans nécessiter d'adjoindre une pièce spécifique de fermeture ; une telle pièce sera cependant en général prévue, en combinaison avec des formes appropriées de guidage prévues dans les parois 12,13.The maintenance of the bridges B in their housings L is ensured by suitable forms of retention 40 (see FIG. 4). The introduction of a bridge B into its housing is ensured by an opening 41 opening towards the outside by means of a ramp or a cutaway 42 provided on a central part 43 of the support to receive the web at an angle 21 of the bridge, while ramps 44 are provided on the lateral parts 45 of the support to receive the wings 22, 23 of the bridge at an angle. This arrangement makes it possible to maintain the contact bridges without the need to add a specific closure part; such a part will however in general be provided, in combination with suitable forms of guidance provided in the walls 12,13.
Claims (6)
- Multipole electromechanical contactor comprising two fixed contacts for each pole, each arranged on a fixed contact part (11a, 11b) inside an insulating box (10), and a mobile contact bridge (B) supporting two contacts (Ca, Cb) each associated with a fixed contact (C'a, C'b), the contact bridges of the various poles being housed in an insulating support (20) with a generally prismatic contour free to move in translation along a main direction (X) between walls (12, 13) of the box (10) as a function of the state of a control device, and firstly the fixed contact parts and secondly the contact bridges being arranged perpendicular to the main direction and being placed one after the other in this direction, the mobile insulating support (20) forming a housing (L) for each contact bridge defined by intermediate transverse partitions (31 - 33) located transverse to the main direction, and by a perpendicular insulating wall element connecting these partitions, each housing opening up on only one large side of the support,
characterised by the fact that
perpendicular insulating wall elements (36, 37, 37, 38, 38, 39) specific to the adjacent housings (L) and guided by the walls (12, 13) of the box when the insulating support (20) slides, are provided on each side of a mean longitudinal plane (P) of the insulating support (20) such that the adjacent housings open up towards the opposite large sides of the insulating support (20), respectively. - Contactor according to claim 1, characterised by the fact that the wall elements (36-39) are arranged symmetrically with respect to a mean longitudinal plane (P), one behind the other and alternately.
- Contactor according to claim 1, characterised by the fact that:transverse partitions (34, 35) are provided at the ends of the insulating support (20) and are connected to the adjacent intermediate partition (31, 33) by an insulating wall element (36, 39) alternating with the wall element (37, 38) connecting the adjacent intermediate partition (31, 33) to the next partition (32).
- Contactor according to claim 1, characterised by the fact that:the contact bridges (B) have a core (21) loaded by a contact pressure spring (R) and the insulating support (20) has an opening (41) in the central part for each bridge in which the core of the bridge is inserted, opening up towards the outside through a ramp (42) formed in the central part.
- Contactor according to claim 1, characterised by the fact that:the insulating support (20) has ramps (44) in its lateral parts used for the insertion of flanges (22, 23) of the bridge and connecting a transverse partition (31-33) to the adjacent insulating wall element (37-39).
- Multipole electromechanical contactor comprising two fixed contacts for each pole, each arranged on a fixed contact part (11a, 11b) inside an insulating box (10), and a mobile contact bridge (B) supporting two contacts each associated with a fixed contact, the contact bridges of the various poles being housed in an insulating support (20) with a generally prismatic contour free to move in translation along a main direction (X) in the box (10) as a function of the state of a control device, and firstly the fixed contact parts and secondly the contact bridges being arranged perpendicular to the main direction and being placed one after the other in this direction at a pitch (p) between poles, the mobile insulating support forming a housing (L) for each contact bridge defined by intermediate transverse partitions (31 - 33) located transverse to the main direction, and by a perpendicular insulating wall element connecting these partitions.
characterised by the fact that:- the mobile insulating support (20) has a cross section in the shape of meanders (34, 36, 31, 37, 32, 38, 33, 39) guided by the walls of the box (10) when the mobile insulating support (20) slides, forming an insulating distance (2p) thus equal to twice the pitch (p) between poles in the main direction (X), between the mobile contact bridges (B) for which the housings open up towards the same wall (12, 13) of the box (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9802174A FR2775384B1 (en) | 1998-02-20 | 1998-02-20 | MULTIPOLAR ELECTROMECHANICAL CONTACTOR WITH IMPROVED INTERPOLATE ISOLATION CONTACT BRIDGES |
| FR9802174 | 1998-02-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0938120A1 EP0938120A1 (en) | 1999-08-25 |
| EP0938120B1 true EP0938120B1 (en) | 2004-03-31 |
Family
ID=9523269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19990400389 Expired - Lifetime EP0938120B1 (en) | 1998-02-20 | 1999-02-17 | Multipole electromagnetic contactor with a bridging contact having an improved insulation between the different poles |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0938120B1 (en) |
| DE (1) | DE69915912T2 (en) |
| ES (1) | ES2215364T3 (en) |
| FR (1) | FR2775384B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1120806B1 (en) * | 2000-01-28 | 2013-11-13 | ELESTA relays GmbH | Safety relay, the use of such a relay and switching device with it |
| EP1143474B1 (en) | 2000-04-03 | 2009-03-25 | ELESTA relays GmbH | Relay |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3146780C2 (en) * | 1981-11-25 | 1985-10-24 | Siemens AG, 1000 Berlin und 8000 München | Multiple contact arrangement |
| FR2579014B1 (en) * | 1985-03-18 | 1987-04-10 | Telemecanique Electrique | ELECTROMAGNETICALLY CONTROLLED MULTIPOLAR SWITCH WITH OFFSET PARTITIONS |
| GB2229038B (en) * | 1989-03-07 | 1994-01-26 | Matsushita Electric Works Ltd | Electromagnetic contactor |
-
1998
- 1998-02-20 FR FR9802174A patent/FR2775384B1/en not_active Expired - Fee Related
-
1999
- 1999-02-17 ES ES99400389T patent/ES2215364T3/en not_active Expired - Lifetime
- 1999-02-17 EP EP19990400389 patent/EP0938120B1/en not_active Expired - Lifetime
- 1999-02-17 DE DE1999615912 patent/DE69915912T2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69915912D1 (en) | 2004-05-06 |
| FR2775384B1 (en) | 2003-05-30 |
| ES2215364T3 (en) | 2004-10-01 |
| FR2775384A1 (en) | 1999-08-27 |
| DE69915912T2 (en) | 2004-08-19 |
| EP0938120A1 (en) | 1999-08-25 |
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