EP1770729A1 - Cover for the screws with means for controlling fastening of the screws - Google Patents

Cover for the screws with means for controlling fastening of the screws Download PDF

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Publication number
EP1770729A1
EP1770729A1 EP05360036A EP05360036A EP1770729A1 EP 1770729 A1 EP1770729 A1 EP 1770729A1 EP 05360036 A EP05360036 A EP 05360036A EP 05360036 A EP05360036 A EP 05360036A EP 1770729 A1 EP1770729 A1 EP 1770729A1
Authority
EP
European Patent Office
Prior art keywords
cover
screw
screws
studs
cage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05360036A
Other languages
German (de)
French (fr)
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EP1770729B1 (en
Inventor
Serge Thomas
Loïc Meyer
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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 Hager Electro SAS filed Critical Hager Electro SAS
Priority to ES05360036T priority Critical patent/ES2308418T3/en
Priority to DE602005006814T priority patent/DE602005006814D1/en
Priority to EP05360036A priority patent/EP1770729B1/en
Priority to AT05360036T priority patent/ATE395711T1/en
Publication of EP1770729A1 publication Critical patent/EP1770729A1/en
Application granted granted Critical
Publication of EP1770729B1 publication Critical patent/EP1770729B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0264—Protective covers for terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5213—Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H01H71/0271—Mounting several complete assembled circuit breakers together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections

Definitions

  • the present invention relates to a removable cap-screw cover intended to equip the housing with electrical appliances, for example, modular type circuit-breakers and differential units comprising connection devices with cage and clamping screw. It also relates to a sliding drawer differential unit provided with connecting conductors to an adjacent circuit breaker type electrical appliance having such a cover.
  • the connecting conductors are in fact arranged in a lateral extension of the drawer, and their ends are positioned to fit into the cages of the adjacent apparatus when closing the drawer.
  • the opening movement of the sliding member is performed in particular for the purpose of releasing the volume potentially occupied by the circuit breaker to be joined, to allow its installation / disassembly.
  • the ends of the connecting conductors are no longer an obstacle to operations to install the two devices side by side.
  • the invention is characterized, in principal, in that the cap-screw cover is provided with means for controlling the tightening of the screws in their cage.
  • This cover which obstructs the orifices made in the front of the products, and gives access to the screw heads, is therefore a component located in the immediate vicinity of said heads.
  • the position of these reflects the degree of tightening of the connecting devices.
  • the control means consist of studs secured to the cover, in number equal to the number of cages of the electrical apparatus, and insertable in the orifices opening into the facade of the latter giving access to the screws. Said pads are then provided in such a length that the lid can not close completely unless all the screws are in the tight state.
  • Closing the lid is impossible when the screws are in the loose position, because the pads are then blocked in their progress inside the housing. There is more obstacle to their penetration only when the screws are tight. An incompletely closed lid therefore immediately indicates a poor tightening in at least one of the cages.
  • the length of said pads is easy to calculate, with reasonable functional play, since the position of the cages in the housings is known, as well as the thickness of the conductors to be tightened and the length of the screws. It is therefore sufficient to subtract first the total length of the screw plus the thickness of the conductor of the distance between the front of the product and the terminal at the base of the cage. A further subtraction of a value for example of about 1 mm to the previous theoretical result, a value that gives an estimate of the functional play, allows to know with a great enough accuracy the length that must be given to the pad.
  • these studs are of cylindrical shape.
  • the cover is preferably provided pivoting, by means of a hinge located at the transverse end edge of the front of the electrical device.
  • the hinge is made by a hinge in one piece with the cover, by means of a film connecting the housing and the cover.
  • the design of the film can be provided in such a way that a certain elasticity is applied to the lid, with a tendency to return it to a rest position, for example in the open position.
  • the present invention also relates to a sliding drawer differential unit provided with connecting conductors to an adjacent circuit breaker type electrical appliance attached to said block. These conductors are then arranged in a lateral extension of the drawer and their ends positioned so as to be inserted into the cages of the adjacent apparatus when closing the drawer. It is provided with a screw cap cover according to the invention, secured to the lateral extension of the slide, and which pivots by means of a hinge located at the upper outer edge of said lateral extension.
  • the differential block association (1) / circuit breaker (2) being after initial assembly considered as a separate unit, it is not necessarily the same person who tightens the screws of the connecting devices (3) and (4). A factor of insecurity therefore exists, since the person in charge of the differential block unit (1) / circuit breaker (2) can very well consider, when handling the product, that the fixation seems correct, which is the case. for example if three of the screws (4) are tightened. During a quick assembly of all the components of a cabinet, it will also tend to concern itself only the input / output screws (3) which it is in principle responsible.
  • the screw-cap cover (5) can not be closed because one of the screws (4) is not tight, because of the existence of a stud (6) which abuts against the screw head (4).
  • the screw (4) is tightened in contact with the connecting end of the conductor (7), and the screw cap (5) can be closed in contact with the front of the housing (B) because the stud (6) does not encounter any obstacle to closing.
  • the hinge of the cover (5) is in one piece with the latter and the drawer: it is in the form of a thinned plastic film whose elastic properties allow the cover (5) to be pulled back in the open position. .
  • Figure 3 clearly shows that it is relatively easy to calculate the length to give the pads (6), knowing the length of the screw (4) and the thickness of the end of the connecting conductor (7). This length is easily deduced from these measurements, while maintaining a functional clearance necessary to protect itself in particular against the dimensional dispersion resulting from the manufacture.
  • the example described above relates to a differential block (1) associated with a circuit breaker (2), involving a somewhat unusual configuration since the cover (5) is integral with a lateral extension of the drawer located in front of the circuit breaker (2).
  • the configuration described is however generalizable to other connection devices (3), with a cover (5) then pivoting directly at the transverse end edge of the product front, and no longer on the lateral extension of the drawer.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Patch Boards (AREA)
  • Connection Of Plates (AREA)
  • Casings For Electric Apparatus (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The cover (5) has a unit controlling a tightening of a binding screw (4) in a screw cage and including studs (6) integrated to the cover and equal to the number of the screw cages inserted in orifices provided in front of an electric device. The studs have length, such that the cover is closed only when the screws are in tightened state. A hinge (8) is provided at a level of a ridge transversal to an end of the front of the electric device and is formed as a single part with the cover using a thin plastic film connecting the cover and an electric device casing (B).

Description

La présente invention concerne un couvercle cache-vis amovible prévu pour équiper le boîtier d'appareils électriques par exemple modulaires du type disjoncteur et bloc différentiel comportant des dispositifs de raccordement à cage et vis de serrage. Elle a également trait à un bloc différentiel à tiroir coulissant muni de conducteurs de raccordement à un appareil électrique adjacent de type disjoncteur doté d'un tel couvercle.The present invention relates to a removable cap-screw cover intended to equip the housing with electrical appliances, for example, modular type circuit-breakers and differential units comprising connection devices with cage and clamping screw. It also relates to a sliding drawer differential unit provided with connecting conductors to an adjacent circuit breaker type electrical appliance having such a cover.

Dans ces derniers appareils, les conducteurs de raccordement sont en fait agencés dans un prolongement latéral du tiroir, et leurs extrémités sont positionnées de manière à s'insérer dans les cages de l'appareil adjacent lors de la fermeture du tiroir. Le déplacement à l'ouverture de l'organe coulissant est réalisé en particulier dans le but de libérer le volume potentiellement occupé par le disjoncteur à accoler, pour permettre son installation / démontage. Les extrémités des conducteurs de raccordement ne constituent alors plus un obstacle aux opérations visant à installer les deux appareils côte à côte.In these devices, the connecting conductors are in fact arranged in a lateral extension of the drawer, and their ends are positioned to fit into the cages of the adjacent apparatus when closing the drawer. The opening movement of the sliding member is performed in particular for the purpose of releasing the volume potentially occupied by the circuit breaker to be joined, to allow its installation / disassembly. The ends of the connecting conductors are no longer an obstacle to operations to install the two devices side by side.

De tels tiroirs coulissants sont déjà connus en tant que tels et décrits en particulier dans le document WO99/63563 au nom de la déposante. La commodité d'utilisation procurée par cette configuration peut cependant, au milieu de nombreux avantages, présenter un inconvénient. Lesdits avantages sont bien connus : gain de temps, facilité de manipulation, rapidité de connexion, etc. Le problème qui peut être vu comme résultant de cette grande simplicité est le suivant : l'automatisation de la première phase du raccordement des deux appareils accolés peut conduire les utilisateurs à fermer machinalement le tiroir et à oublier de serrer une ou plusieurs des vis de raccordement.Such sliding drawers are already known as such and described in particular in the document WO99 / 63563 in the name of the applicant. The convenience of use provided by this configuration can, however, in the midst of many advantages, have a disadvantage. Said advantages are well known: saving time, ease of handling, speed of connection, etc. The problem that can be seen as resulting from this great simplicity is the following: the automation of the first phase of the connection of the two contiguous appliances can lead to users to mechanically close the drawer and forget to tighten one or more of the connecting screws.

Cela est d'autant plus vraisemblable que les tiroirs sont munis d'un couvercle cache-vis mobile entre une position d'ouverture libérant l'accès aux vis et une position de fermeture obturant ledit accès. La norme officielle prévoit d'ailleurs que ces cache-vis puissent être plombés, puisqu'en principe l'association bloc différentiel / disjoncteur ne doit plus pouvoir être démontée une fois qu'elle a été mise en place. Le contrôle de la qualité du serrage, en l'occurrence du vissage, devient alors impossible à effectuer, d'autant qu'une certaine continuité électrique peut parfaitement exister sans vissage.This is all the more likely that the drawers are provided with a movable screw cap cover between an open position releasing access to the screws and a closed position closing said access. The official standard also provides that these screw caps can be sealed, since in principle the differential block / circuit breaker association must no longer be disassembled once it has been put in place. The control of the quality of the tightening, in this case the screwing, becomes impossible to perform, especially since a certain electrical continuity can perfectly exist without screwing.

Or, l'absence de serrage peut entraîner des échauffements excessifs, et avoir des conséquences graves comme provoquer des dysfonctionnements de l'ensemble de l'installation, ou entraîner un risque d'incendie. Ces problèmes surviennent d'autant plus facilement que les produits sont en général livrés cage ouverte, c'est-à-dire avec les vis en position haute, afin que leur mise en oeuvre soit rapide et facile. Dans cette hypothèse, un conducteur simplement introduit dans une cage et non serré peut être en contact avec la paroi de la cage du fait de sa déformation naturelle. La surface de contact, non maîtrisée, sera cependant dans de nombreux cas insuffisante au regard du courant impliqué, et par conséquent le lieu d'un échauffement disproportionné.However, the absence of clamping can cause excessive heating, and have serious consequences such as causing malfunctions of the entire installation, or cause a fire hazard. These problems occur all the more easily as the products are generally delivered open cage, that is to say with the screws in the high position, so that their implementation is quick and easy. In this case, a conductor simply introduced into a cage and not tightened may be in contact with the wall of the cage due to its natural deformation. The contact surface, uncontrolled, will however in many cases be insufficient in view of the current involved, and therefore the place of a disproportionate heating.

C'est cette question qu'aborde la présente invention, qui propose une solution aux oublis de serrage, résultant dans l'exemple ci-dessus des facilités procurées par les configurations basées sur des tiroirs mobiles, mais qui peuvent plus généralement se produire dans tous les types d'appareils électriques munis de cages et vis.It is this question that the present invention addresses, which proposes a solution to the omissions of tightening, resulting in the above example of the facilities provided by the configurations based on mobile drawers, but which can more generally occur in all of them. types of electrical appliances with cages and screws.

L'invention se caractérise, à titre principal, en ce que le couvercle cache-vis est muni de moyens de contrôle du serrage des vis dans leur cage.The invention is characterized, in principal, in that the cap-screw cover is provided with means for controlling the tightening of the screws in their cage.

Ce couvercle, qui vient obstruer les orifices pratiqués dans la façade des produits, et donne accès aux têtes de vis, est par conséquent un composant situé à proximité immédiate desdites têtes. Or, la position de celles-ci reflète le degré de serrage des dispositifs de raccordement. C'est la raison pour laquelle les moyens de contrôle, selon une configuration préférentielle de l'invention, consistent en des plots solidaires du couvercle, en nombre égal au nombre de cages de l'appareil électrique, et insérables dans les orifices débouchant dans la façade de ce dernier donnant accès aux vis. Lesdits plots sont alors prévus de longueur telle que le couvercle ne peut se fermer complètement que si la totalité des vis est à l'état serré.This cover, which obstructs the orifices made in the front of the products, and gives access to the screw heads, is therefore a component located in the immediate vicinity of said heads. However, the position of these reflects the degree of tightening of the connecting devices. This is the reason why the control means, according to a preferred configuration of the invention, consist of studs secured to the cover, in number equal to the number of cages of the electrical apparatus, and insertable in the orifices opening into the facade of the latter giving access to the screws. Said pads are then provided in such a length that the lid can not close completely unless all the screws are in the tight state.

La fermeture du couvercle est impossible lorsque les vis sont en position desserrée, car les plots sont alors bloqués dans leur progression à l'intérieur du boîtier. Il n'y a plus d'obstacle à leur pénétration uniquement lorsque les vis sont serrées. Un couvercle incomplètement fermé témoigne donc immédiatement d'un mauvais serrage dans l'une au moins des cages.Closing the lid is impossible when the screws are in the loose position, because the pads are then blocked in their progress inside the housing. There is more obstacle to their penetration only when the screws are tight. An incompletely closed lid therefore immediately indicates a poor tightening in at least one of the cages.

La longueur desdits plots est facile à calculer, avec un jeu fonctionnel raisonnable, car la position des cages dans les boîtiers est connue, ainsi que l'épaisseur des conducteurs à serrer et la longueur des vis. Il suffit donc de soustraire dans un premier temps la longueur totale de la vis additionnée de l'épaisseur du conducteur de la distance existant entre la façade du produit et la borne à la base de la cage. Une soustraction supplémentaire d'une valeur par exemple d'environ 1 mm au résultat théorique précédent, valeur qui donne une estimation du jeu fonctionnel, permet de savoir avec une précision assez grande la longueur qu'il faut donner au plot.The length of said pads is easy to calculate, with reasonable functional play, since the position of the cages in the housings is known, as well as the thickness of the conductors to be tightened and the length of the screws. It is therefore sufficient to subtract first the total length of the screw plus the thickness of the conductor of the distance between the front of the product and the terminal at the base of the cage. A further subtraction of a value for example of about 1 mm to the previous theoretical result, a value that gives an estimate of the functional play, allows to know with a great enough accuracy the length that must be given to the pad.

Selon une possibilité, ces plots sont d'allure cylindrique.According to one possibility, these studs are of cylindrical shape.

Par ailleurs, le couvercle est de préférence prévu pivotant, au moyen d'une articulation localisée au niveau de l'arête transversale d'extrémité de la façade de l'appareil électrique.Moreover, the cover is preferably provided pivoting, by means of a hinge located at the transverse end edge of the front of the electrical device.

Il s'agit d'une configuration, connue en soi, qui est la plus simple à mettre en oeuvre et à fabriquer.This is a configuration, known in itself, which is the simplest to implement and to manufacture.

A la fermeture, le mouvement circulaire du couvercle se répercute au plot, dont les extrémités libres arrivent à proximité de la façade et de son orifice avec un angle d'attaque tel que, si la forme de l'orifice en question épouse l'extérieur du volume du plot, il constitue un obstacle au moment de l'introduction.When closed, the circular movement of the cover is transmitted to the stud, whose free ends come close to the front and its orifice with an angle of attack such that, if the shape of the orifice in question marries the outside volume of the stud, it is an obstacle at the time of introduction.

C'est la raison pour laquelle les parois externes des plots localisées distalement à l'articulation du couvercle sont tronquées de manière à diminuer progressivement dans cette zone la section transversale du plot en allant vers son extrémité libre. Leur insertion dans les orifices est alors possible dans le cours de la rotation.This is the reason why the outer walls of the studs located distally at the hinge of the cover are truncated so as to gradually decrease in this area the cross section of the stud going towards its free end. Their insertion into the orifices is then possible in the course of the rotation.

Pour simplifier notamment la fabrication industrielle, l'articulation est réalisée par une charnière d'une seule pièce avec le couvercle, au moyen d'un film reliant le boîtier et le couvercle.In particular to simplify the industrial production, the hinge is made by a hinge in one piece with the cover, by means of a film connecting the housing and the cover.

La conception du film peut être prévue de telle manière qu'une certaine élasticité s'applique au couvercle, avec une tendance à le rappeler dans une position de repos, par exemple en position ouverte.The design of the film can be provided in such a way that a certain elasticity is applied to the lid, with a tendency to return it to a rest position, for example in the open position.

En définitive, si une vis n'est pas serrée dans une seule cage, il n'est pas possible de fermer le couvercle dans son entier. Le défaut est donc immédiatement visible, et peut être réparé.Ultimately, if a screw is not tight in a single cage, it is not possible to close the lid in its entirety. The defect is immediately visible, and can be repaired.

Comme mentionné auparavant, la présente invention concerne aussi un bloc différentiel à tiroir coulissant muni de conducteurs de raccordement à un appareil électrique adjacent de type disjoncteur accolé au dit bloc. Ces conducteurs sont alors agencés dans un prolongement latéral du tiroir et leurs extrémités positionnées de manière à s'insérer dans les cages de l'appareil adjacent lors de la fermeture du tiroir. Celui-ci est doté d'un couvercle cache-vis selon l'invention, solidaire du prolongement latéral du tiroir, et qui pivote au moyen d'une articulation localisée au niveau de l'arête externe supérieure dudit prolongement latéral.As mentioned before, the present invention also relates to a sliding drawer differential unit provided with connecting conductors to an adjacent circuit breaker type electrical appliance attached to said block. These conductors are then arranged in a lateral extension of the drawer and their ends positioned so as to be inserted into the cages of the adjacent apparatus when closing the drawer. It is provided with a screw cap cover according to the invention, secured to the lateral extension of the slide, and which pivots by means of a hinge located at the upper outer edge of said lateral extension.

L'invention va à présent être décrite plus en détail, en référence aux dessins, pour lesquels :

  • la figure 1 représente, en perspective, l'association d'un bloc différentiel et d'un disjoncteur quadripolaire ;
  • la figure 2 est une vue en coupe partielle au niveau d'un dispositif de raccordement à cage et vis du disjoncteur, la vis n'étant pas serrée et le couvercle cache-vis par conséquent maintenu en position intermédiaire ; et
  • la figure 3 montre la même coupe, la vis et le couvercle cache-vis étant cette fois en position respectivement de serrage et de fermeture.
The invention will now be described in more detail, with reference to the drawings, for which:
  • Figure 1 shows, in perspective, the combination of a differential block and a quadrupole circuit breaker;
  • Figure 2 is a partial sectional view at a connection device cage and screw circuit breaker, the screw is not tight and the cover screw cap therefore maintained in the intermediate position; and
  • Figure 3 shows the same section, the screw and the cover screw cover being this time in the position of respectively tightening and closing.

L'association d'un bloc différentiel (1) et d'un disjoncteur quadripolaire (2) qui apparaît à la figure 1 met en lumière le fait que, dans cette configuration, il y a en fait plusieurs groupes de dispositifs de raccordement distincts. Ainsi, un ensemble de vis de raccordement d'entrée ou de sortie du disjoncteur différentiel, constitué des deux produits disjoncteurs (2) et bloc différentiel (1), est visible sous la référence (3). Par ailleurs, des dispositifs de raccordement (4) permettent la connexion du bloc (1) et du disjoncteur (2). Ils bénéficient d'un couvercle cache-vis (5).The combination of a differential block (1) and a quadrupole circuit breaker (2) which appears in FIG. 1 highlights the fact that, in this configuration, there are in fact several groups of separate connection devices. Thus, a set of connection screws input or output of the differential circuit breaker, consisting of two circuit breaker products (2) and differential block (1), is visible under the reference (3). Furthermore, connecting devices (4) allow the connection of the block (1) and the circuit breaker (2). They have a screw cap (5).

L'association bloc différentiel (1) / disjoncteur (2) étant après assemblage initial considéré comme une unité distincte, ce n'est pas forcément la même personne qui serre les vis des dispositifs de raccordement (3) et (4). Un facteur d'insécurité existe par conséquent, puisque la personne chargée de l'unité bloc différentiel (1) / disjoncteur (2) peut très bien considérer, lorsqu'elle manipule le produit, que la fixation semble correcte, ce qui est le cas par exemple si trois des vis (4) sont serrées. Au cours d'un montage rapide de l'ensemble des composants d'un coffret, elle aura d'ailleurs tendance à ne se préoccuper que des vis d'entrée/sortie (3) dont elle a en principe la charge.The differential block association (1) / circuit breaker (2) being after initial assembly considered as a separate unit, it is not necessarily the same person who tightens the screws of the connecting devices (3) and (4). A factor of insecurity therefore exists, since the person in charge of the differential block unit (1) / circuit breaker (2) can very well consider, when handling the product, that the fixation seems correct, which is the case. for example if three of the screws (4) are tightened. During a quick assembly of all the components of a cabinet, it will also tend to concern itself only the input / output screws (3) which it is in principle responsible.

Dans nombre de situations, l'opérateur n'aura d'ailleurs aucun moyen de contrôle du serrage correct des vis (4), puisque les couvercles cache-vis (5) sont de plus en plus fréquemment plombés.In many situations, the operator will have no means of controlling the correct tightening of the screws (4), since the screw covers (5) are more and more frequently leaded.

Dans toutes ces hypothèses, un mauvais serrage des vis (4) peut s'avérer fâcheux car les conséquences peuvent être sérieuses, comme mentionné ci-dessus.In all these cases, a poor tightening of the screws (4) can be unfortunate because the consequences can be serious, as mentioned above.

C'est la raison pour laquelle le système de l'invention a été spécifiquement conçu pour prévenir ce genre de problème. En référence à la figure 2, le couvercle cache-vis (5) ne peut pas être fermé, car l'une des vis (4) n'est pas serrée, du fait de l'existence d'un plot (6) qui bute contre la tête de vis (4). A l'inverse, dans l'hypothèse montrée en figure 3, la vis (4) est serrée au contact de l'extrémité de raccordement du conducteur (7), et le couvercle cache-vis (5) peut être fermé au contact de la façade du boîtier (B) car le plot (6) ne rencontre pas d'obstacle à la fermeture. Compte tenu que le couvercle (5) pivote autour d'une charnière (8), il a été nécessaire d'incurver la paroi distale (9) des plots (6), de manière à ce qu'elle ne heurte pas la façade, par réduction progressive de l'épaisseur la paroi du plot (6) vers son extrémité. La charnière du couvercle (5) est d'une seule pièce avec celui-ci et le tiroir : elle se présente comme un film plastique aminci dont les propriétés élastiques permettent d'ailleurs le rappel du couvercle (5) cache-vis en position ouverte.This is the reason why the system of the invention has been specifically designed to prevent this kind of problem. With reference to FIG. 2, the screw-cap cover (5) can not be closed because one of the screws (4) is not tight, because of the existence of a stud (6) which abuts against the screw head (4). Conversely, in the hypothesis shown in FIG. 3, the screw (4) is tightened in contact with the connecting end of the conductor (7), and the screw cap (5) can be closed in contact with the front of the housing (B) because the stud (6) does not encounter any obstacle to closing. Given that the cover (5) pivots around a hinge (8), it was necessary to bend the distal wall (9) of the pads (6), so that it does not hit the front, by gradually reducing the thickness of the wall of the stud (6) towards its end. The hinge of the cover (5) is in one piece with the latter and the drawer: it is in the form of a thinned plastic film whose elastic properties allow the cover (5) to be pulled back in the open position. .

La figure 3 montre clairement qu'il est relativement aisé de calculer la longueur à donner aux plots (6), connaissant la longueur de la vis (4) et l'épaisseur de l'extrémité du conducteur de raccordement (7). Cette longueur se déduit aisément de ces mesures, en maintenant un jeu fonctionnel nécessaire pour se prémunir notamment contre la dispersion dimensionnelle résultant de la fabrication.Figure 3 clearly shows that it is relatively easy to calculate the length to give the pads (6), knowing the length of the screw (4) and the thickness of the end of the connecting conductor (7). This length is easily deduced from these measurements, while maintaining a functional clearance necessary to protect itself in particular against the dimensional dispersion resulting from the manufacture.

L'exemple décrit ci-dessus se rapporte à un bloc différentiel (1) associé à un disjoncteur (2), impliquant une configuration un peu particulière puisque le couvercle (5) est solidaire d'un prolongement latéral du tiroir localisé en face du disjoncteur (2). La configuration décrite est cependant généralisable aux autres dispositifs de raccordements (3), avec un couvercle (5) pivotant alors directement au niveau de l'arête transversale d'extrémité de la façade du produit, et non plus sur le prolongement latéral du tiroir.The example described above relates to a differential block (1) associated with a circuit breaker (2), involving a somewhat unusual configuration since the cover (5) is integral with a lateral extension of the drawer located in front of the circuit breaker (2). The configuration described is however generalizable to other connection devices (3), with a cover (5) then pivoting directly at the transverse end edge of the product front, and no longer on the lateral extension of the drawer.

Claims (9)

Couvercle cache-vis (5) amovible prévu pour équiper le boîtier d'appareils électriques par exemple modulaires du type disjoncteur (2)et bloc différentiel (1) comportant des dispositifs de raccordement (3, 4) à cage et vis de serrage, caractérisé en ce qu'il comporte des moyens de contrôle du serrage des vis (4) dans leur cage.Removable cover cap (5) designed to equip the housing of eg modular electrical devices of the circuit-breaker type (2) and differential block (1) comprising connection devices (3, 4) with cage and clamping screw, characterized in that it comprises means for controlling the tightening of the screws (4) in their cage. Couvercle cache-vis (5) selon la revendication précédente, caractérisé en ce que lesdits moyens de contrôle consistent en des plots (6) solidaires du couvercle (5), en nombre égal au nombre de cages de l'appareil électrique, insérables dans des orifices débouchant dans la façade de ce dernier et donnant accès aux vis (4), lesdits plots (6) étant prévus de longueur telle que le couvercle (5) ne peut se fermer complètement que si la totalité des vis (4) est à l'état serré.Screw cover (5) according to the preceding claim, characterized in that said control means consist of studs (6) integral with the cover (5), in number equal to the number of cages of the electrical apparatus, insertable in openings opening into the front of the latter and giving access to the screws (4), said studs (6) being provided in such a length that the cover (5) can not close completely unless all the screws (4) tight state. Couvercle cache-vis (5) selon la revendication précédente, caractérisé en ce que les plots (6) sont d'allure cylindrique.Screw cover (5) according to the preceding claim, characterized in that the studs (6) are of cylindrical shape. Couvercle cache-vis (5) selon l'une quelconque des revendications précédentes, caractérisé en ce que le couvercle (5) est prévu pivotant au moyen d'une articulation (8) localisée au niveau de l'arête transversale d'extrémité de la façade de l'appareil électrique.Screw cover (5) according to one of the preceding claims, characterized in that the cover (5) is pivotally mounted by means of a hinge (8) located at the transverse end edge of the facade of the electrical apparatus. Couvercle cache-vis (5) selon les revendications 3 et 4, caractérisé en ce que les parois (9) externes des plots (6) localisées distalement à l'articulation (8) sont tronquées de manière à diminuer progressivement dans cette zone la section transversale du plot (6) en allant dans la direction de son extrémité libre.Screw cover (5) according to claims 3 and 4, characterized in that the outer walls (9) of the studs (6) located distally to the articulation (8) are truncated in such a way as to progressively reduce in this zone the section transverse of the stud (6) going in the direction of its free end. Couvercle cache-vis (5) selon l'une des revendications 4 et 5, caractérisé en ce que l'articulation est réalisée par une charnière (8) d'une seule pièce avec le couvercle (5), au moyen d'un film reliant le boîtier (B) et le couvercle (5).Screw cover (5) according to one of claims 4 and 5, characterized in that the hinge is formed by a hinge (8) in one piece with the cover (5), by means of a film connecting the housing (B) and the cover (5). Couvercle cache-vis (5) selon l'une des revendications 2 à 6, caractérisé en ce que les plots (6) ont une longueur sensiblement égale à la différence entre la distance entre la façade et la borne à la base de la cage, et la longueur de la vis (4) additionnée de l'épaisseur du conducteur (7) de raccordement, augmentée d'environ 1 millimètre.Screw cover (5) according to one of claims 2 to 6, characterized in that the studs (6) have a length substantially equal to the difference between the distance between the front and the terminal at the base of the cage, and the length of the screw (4) plus the thickness of the connecting conductor (7), increased by about 1 millimeter. Bloc différentiel (1) à tiroir coulissant muni de conducteurs (7) de raccordement à un appareil électrique adjacent de type disjoncteur (2) accolé au dit bloc (1), lesdits conducteurs (7) étant agencés dans un prolongement latéral du tiroir et leurs extrémités positionnées de manière à s'insérer dans des dispositifs de raccordement (3, 4) à cage et vis de l'appareil adjacent lors de la fermeture du tiroir, lequel est muni d'un couvercle (5) cache-vis mobile entre une position d'ouverture libérant l'accès aux vis et une position de fermeture obturant ledit accès, caractérisé en ce que le prolongement latéral est muni d'un couvercle cache-vis (5) selon l'une quelconque des revendications 1 à 4 et 6 à 7.Differential block (1) with sliding drawer provided with conductors (7) for connection to an adjacent circuit-breaker type electrical appliance (2) attached to said block (1), said conductors (7) being arranged in a lateral extension of the drawer and their ends positioned so as to fit into connection devices (3, 4) with cage and screw of the adjacent apparatus when closing the slide, which is provided with a cover (5) movable screw cap between an open position releasing access to the screw and a closed position closing said access, characterized in that the lateral extension is provided with a screw cap (5) according to any one of claims 1 to 4 and 6 to 7. Bloc différentiel (1) selon la revendication précédente, caractérisée en ce que le couvercle (5) pivote au moyen d'une articulation (8) localisée au niveau de l'arête externe supérieure du prolongement latéral du tiroir.Differential block (1) according to the preceding claim, characterized in that the cover (5) pivots by means of a hinge (8) located at the upper outer edge of the lateral extension of the drawer.
EP05360036A 2005-09-29 2005-09-29 Cover for the screws with means for controlling fastening of the screws Active EP1770729B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES05360036T ES2308418T3 (en) 2005-09-29 2005-09-29 COVER SCREWS WITH MEANS OF CONTROL OF TIGHTENING THE SCREWS.
DE602005006814T DE602005006814D1 (en) 2005-09-29 2005-09-29 Clamping screw cover with a device for controlling the fastening of the screws
EP05360036A EP1770729B1 (en) 2005-09-29 2005-09-29 Cover for the screws with means for controlling fastening of the screws
AT05360036T ATE395711T1 (en) 2005-09-29 2005-09-29 CLAMPING SCREW COVER WITH A DEVICE FOR CONTROLLING THE FIXING OF THE SCREWS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05360036A EP1770729B1 (en) 2005-09-29 2005-09-29 Cover for the screws with means for controlling fastening of the screws

Publications (2)

Publication Number Publication Date
EP1770729A1 true EP1770729A1 (en) 2007-04-04
EP1770729B1 EP1770729B1 (en) 2008-05-14

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EP05360036A Active EP1770729B1 (en) 2005-09-29 2005-09-29 Cover for the screws with means for controlling fastening of the screws

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EP (1) EP1770729B1 (en)
AT (1) ATE395711T1 (en)
DE (1) DE602005006814D1 (en)
ES (1) ES2308418T3 (en)

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CN102543603A (en) * 2012-01-20 2012-07-04 浙江鼎威科技有限公司 Ultrathin minitype breaker
WO2014088715A1 (en) * 2012-12-05 2014-06-12 Eaton Corporation Circuit breaker terminal shield with position indicator
EP3131107A1 (en) * 2015-08-13 2017-02-15 Carling Technologies Inc. Circuit breaker with movable terminal barrier
EP3608935A1 (en) * 2018-08-07 2020-02-12 Gorlan Team, S.L.U. A fuse switch module
EP4266509A1 (en) * 2022-04-19 2023-10-25 Lapp Engineering AG Connector unit and connector

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
KR100854383B1 (en) 2007-03-08 2008-09-02 엘에스산전 주식회사 A case for circuit breaker with a monolithic door
JP5355438B2 (en) * 2010-01-27 2013-11-27 三菱電機株式会社 Circuit breaker

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102543603A (en) * 2012-01-20 2012-07-04 浙江鼎威科技有限公司 Ultrathin minitype breaker
WO2014088715A1 (en) * 2012-12-05 2014-06-12 Eaton Corporation Circuit breaker terminal shield with position indicator
US8859918B2 (en) 2012-12-05 2014-10-14 Eaton Corporation Circuit breaker terminal shield with position indicator
EP3131107A1 (en) * 2015-08-13 2017-02-15 Carling Technologies Inc. Circuit breaker with movable terminal barrier
US9859081B2 (en) 2015-08-13 2018-01-02 Carling Technologies, Inc. Circuit breaker with movable terminal barrier
EP3608935A1 (en) * 2018-08-07 2020-02-12 Gorlan Team, S.L.U. A fuse switch module
US11450501B2 (en) 2018-08-07 2022-09-20 Gorlan Team, S. L. U Fuse switch module
EP4266509A1 (en) * 2022-04-19 2023-10-25 Lapp Engineering AG Connector unit and connector

Also Published As

Publication number Publication date
EP1770729B1 (en) 2008-05-14
ES2308418T3 (en) 2008-12-01
ATE395711T1 (en) 2008-05-15
DE602005006814D1 (en) 2008-06-26

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