EP0531222A1 - Process for making a contact carrying blade of a switch by cutting a band and blade made by this process - Google Patents
Process for making a contact carrying blade of a switch by cutting a band and blade made by this process Download PDFInfo
- Publication number
- EP0531222A1 EP0531222A1 EP92402422A EP92402422A EP0531222A1 EP 0531222 A1 EP0531222 A1 EP 0531222A1 EP 92402422 A EP92402422 A EP 92402422A EP 92402422 A EP92402422 A EP 92402422A EP 0531222 A1 EP0531222 A1 EP 0531222A1
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- EP
- European Patent Office
- Prior art keywords
- blade
- tongues
- switch
- cutting
- joint
- 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
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- 238000005520 cutting process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 210000002105 tongue Anatomy 0.000 claims description 42
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 3
- 244000273256 Phragmites communis Species 0.000 abstract 2
- 235000014676 Phragmites communis Nutrition 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- 229910000510 noble metal Inorganic materials 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910002535 CuZn Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs
Definitions
- the present invention relates, originally, to a contact-carrying blade of a switch with two output terminals and an input terminal, or common, and comprising a pusher for pushing one of the ends of the blade and thus move its other contact-carrying end from one of the output terminals to the other, to finally switch the common of one of the output terminals to the other.
- the blade provides the electrical connection between the common and one or the other of the output terminals, on the one hand, and the blade is pivotally mounted on a joint integral with the common, on the other hand.
- the contact-carrying blade 1 is mounted on the articulation 2 by two central tongues 3, 4 engaged by their free ends 5, 6 in two opposite notches 7, 8 of the articulation 2, the tongues 3, 4 being connected, respectively, to the end 9 of cooperation with the pusher and to the contact carrier end 10 which are joined together by a pair of lateral arms 11 between which extend with play the tabs 3, 4.
- the arming force of the blade on the joint generated by the elastic buckling of one of the two tongues slightly spaced from the other, not being sufficient for this, the common and the central tabs of the blade are coated with a layer of a noble metal, for example gold or silver.
- the contact-carrying blade of the switch is produced by cutting with a press, or shearing, from a ribbon, then by dipping the coating metal in an electrolytic bath.
- the central tongues are coated with a layer of noble metal on their five free faces, that is to say their four longitudinal faces parallel in pairs and their edge, or transverse face d 'end.
- a layer of noble metal on their five free faces, that is to say their four longitudinal faces parallel in pairs and their edge, or transverse face d 'end.
- the blades have a very small thickness, of the order of a hundred microns, and that, in the soaking tank, they can consequently deform and stick to each other, to prevent it from n 'results in an irregular metallization and therefore insufficient in some places, it is still preferred that the deposit of noble metal, in the electrolytic bath, is everywhere superabundant, which strikes the realization of the blade, and therefore of the switch, fresh additional.
- the present invention aims to overcome all these drawbacks and is based on a double finding in itself already inventive.
- the noble metals of the coatings of electrical connection between the common and the central tongues have a good ductility and the anchoring of the free ends of the tongues in the notches of the joint, during the use of the switch and because of this ductility and of the pivoting of the tongue ends, is accentuated but so as not to exceed a ultimately relatively shallow depth on either side of the transverse edge of pivoting of the tongue ends.
- the depth of anchoring of the tongues in the joint, when the switch is new is about 1 ⁇ m and, after use, it does not exceed 5 ⁇ m on average.
- the present invention therefore relates to a process for producing, by cutting from a ribbon, a contact-carrying blade of a switch arranged to electrically connect an input terminal to one or the other of two output terminals of the switch and comprising two tongues which, by their free ends, joined before cutting, are pivotally mounted on a joint integral with the input terminal, the electrical connection between the joint and the tongues being provided by coatings of a ductile metal, process characterized by the fact that the blade is cut from the strip which has previously been coated with a layer of metal.
- the edge of the pivoting end of a tongue is coated with the electrical bonding metal, which is ductile in nature, by stretching and transfer, to a perfectly perfect depth. sufficient, of part of the surface covering of the tape adjacent to the cut edge of the tongue. From the cut blade, it can be mounted on the joint before the other stages of the switch manufacturing process are continued.
- the ribbon is sheared between a fixed die, at an edge and a cutting face, on which rests a part of the ribbon intended to become one of the two tongues, and a movable punch which is moved parallel to the cutting face of the die.
- the present invention also relates to the switch contact-holder blade, produced according to the method of the invention, comprising two tongues with free ends, arranged to be pivotally mounted on an articulation of the switch and carrying a coating of ductile metal of electrical connection with the joint, on the surface and on the edge of their free end, characterized in that the coating of the edge of the tongues extends only in part thereon.
- the blade has been cut, and we will come back to this later, in a coated ribbon, on its two faces, corresponding to those mentioned above and carrying the studs 13, 14, of two layers of ductile conductive metal 20, 21.
- L the joint 2 is also coated with a layer of ductile conductive metal 22.
- the layers of metal 20-22 provide the good electrical connection between the joint 2 and the tongues 3, 4.
- the edges 23, 24, that is ie the transverse end faces of the tongues 3, 4 also have a metal coating 27, 25 but which only extends part on these edges, from their transverse edge 28, 26 of pivoting in the notches 7, 8.
- silver which is an excellent conductor, can be used for large currents, and gold, which has good corrosion resistance, for low currents.
- the blade was cut from a CuBeyll cuBeyll ribbon 14 mm wide and 100 ⁇ m thick coated on both sides with a layer of silver Ag 0.3 ⁇ m thick.
- the joint made of CuZn brass, was coated with a silver layer 3 to 5 ⁇ m thick, here particularly thin.
- the silver layer, on the edge of the tongues, extends substantially over a thickness of 20 ⁇ m, more than enough to ensure good contact Ag on Ag during pivoting of the end 6 of the tongue 4, of approximately 2 degrees.
- the cutting of a contact-carrying blade of the invention is carried out by means of a fixed matrix, composed of several elements corresponding to the different parts of the blade, and of a series of associated movable punches. This cutting is carried out in a perfectly conventional manner; as regards the free ends of the tongues, assembled before cutting, a metal transfer is carried out along the pivoting edge of the tongues.
- a die element 29 is used, with support face 37, cutting face 31, perpendicular to the face 37, and cutting edge 30, and a punch 32.
- the punch 32 is mounted to be moved parallel to the cutting face 31 of the die 29, in the direction of the arrow 36.
- the punch 32 has a cutting edge 33 and a cutting face 34 parallel to the direction of movement 36.
- the face front 35 of the punch is, conventionally, released from the plane perpendicular to the direction of movement 36 passing through the cutting edge 33.
- the ribbon is cut to form the two free ends 5, 6, the free end 5, with a edge 23, and the free end 6, with a edge 24 formed by the cutting edge 30 and the face 31 of the die 29.
- the first transverse edge 28 of the free end 5 of the tongue 3, intended to become the pivoting edge, is rounded convexly by the punch with stretching and transfer of part 27 of the metal of the layer 20 on the wafer 23.
- the second edge created in the vicinity of the cutting edge 30 of the die, it is also rounded but concave, with point drawing of part of the metal of the layer 21.
- the first transverse edge 26, intended to become the he pivoting edge is convexly rounded with stretching and transfer of part 25 of the metal of layer 21 onto the edge 24.
- the edge 28 of the tongue 3 is much less important than the edge 26 of the tongue 4.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacture Of Switches (AREA)
Abstract
Description
La présente invention est relative, à l'origine, à une lame porte-contacts d'un interrupteur à deux bornes de sortie et une borne d'entrée, ou commun, et comportant un poussoir pour pousser l'une des extrémités de la lame et déplacer ainsi son autre extrémité porte-contacts d'une des bornes de sorties à l'autre, pour finalement commuter le commun d'une des bornes de sortie sur l'autre. Pour cela, la lame assure la liaison électrique entre le commun et l'une ou l'autre des bornes de sortie, d'une part, et la lame est montée pivotante sur une articulation solidaire du commun, d'autre part.The present invention relates, originally, to a contact-carrying blade of a switch with two output terminals and an input terminal, or common, and comprising a pusher for pushing one of the ends of the blade and thus move its other contact-carrying end from one of the output terminals to the other, to finally switch the common of one of the output terminals to the other. For this, the blade provides the electrical connection between the common and one or the other of the output terminals, on the one hand, and the blade is pivotally mounted on a joint integral with the common, on the other hand.
Plus précisément, et en référence à la figure 1, la lame porte-contacts 1 est montée sur l'articulation 2 par deux languettes centrales 3, 4 engagées par leurs extrémités libres 5, 6 dans deux encoches opposées 7, 8 de l'articulation 2, les languettes 3, 4 étant reliées, respectivement, à l'extrémité 9 de coopération avec le poussoir et à l'extrémité porte-contacts 10 qui sont réunies entre elles par une paire de bras latéraux 11 entre lesquels s'étendent avec jeu les languettes 3, 4.More specifically, and with reference to FIG. 1, the contact-carrying blade 1 is mounted on the
Pour assurer une bonne liaison électrique entre eux, la force d'armement de la lame sur l'articulation, engendrée par le flambage élastique d'une des deux languettes faiblement écartée de l'autre, n'étant pas suffisante pour cela,le commun et les languettes centrales de la lame sont revêtus d'une couche d'un métal noble, comme par exemple l'or ou l'argent.To ensure a good electrical connection between them, the arming force of the blade on the joint, generated by the elastic buckling of one of the two tongues slightly spaced from the other, not being sufficient for this, the common and the central tabs of the blade are coated with a layer of a noble metal, for example gold or silver.
La lame porte-contacts de l'interrupteur est réalisée par découpe à la presse, ou cisaillage, dans un ruban, puis par trempage dans un bain électrolytique du métal de revêtement.The contact-carrying blade of the switch is produced by cutting with a press, or shearing, from a ribbon, then by dipping the coating metal in an electrolytic bath.
Naturellement, les lames sont réalisées par grandes quantités.Naturally, the blades are produced in large quantities.
Selon le procédé de réalisation ci-dessus, les languettes centrales sont revêtues d'une couche de métal noble sur leurs cinq faces libres, c'est-à-dire leurs quatre faces longitudinales parallèles deux à deux et leur tranche, ou face transversale d'extrémité. Pour le seul besoin de la liaison électrique, c'est trop, mais une métallisation sélective serait encore plus onéreuse.According to the above production method, the central tongues are coated with a layer of noble metal on their five free faces, that is to say their four longitudinal faces parallel in pairs and their edge, or transverse face d 'end. For the sole need of the electrical connection, it is too much, but a selective metallization would be even more expensive.
En outre, le trempage des pièces découpées et le stockage en vrac des lames interrompt le flux de production des interrupteurs.In addition, the soaking of the cut pieces and the bulk storage of the blades interrupts the production flow of the switches.
Enfin, comme les lames ont une épaisseur très faible, de l'ordre de la centaine de microns, et que, dans le bac de trempage, elles peuvent par conséquent se déformer et se coller les unes aux autres, pour éviter qu'il n'en résulte une métallisation irrégulière et donc insuffisante à certains endroits, on préfère encore que le dépôt de métal noble, dans le bain électrolytique, soit partout surabondant, ce qui grève la réalisation de la lame, et donc de l'interrupteur, de frais supplémentaires.Finally, as the blades have a very small thickness, of the order of a hundred microns, and that, in the soaking tank, they can consequently deform and stick to each other, to prevent it from n 'results in an irregular metallization and therefore insufficient in some places, it is still preferred that the deposit of noble metal, in the electrolytic bath, is everywhere superabundant, which strikes the realization of the blade, and therefore of the switch, fresh additional.
La présente invention vise à pallier tous ces inconvénients et se fonde sur une double constatation en soi déjà inventive.The present invention aims to overcome all these drawbacks and is based on a double finding in itself already inventive.
Les métaux nobles des revêtements de liaison électrique entre le commun et les languettes centrales ont une bonne ductilité et l'ancrage des extrémités libres des languettes dans les encoches de l'articulation, au cours de l'utilisation de l'interrupteur et du fait de cette ductilité et du pivotement des extrémités de languette, s'accentue mais pour ne pas dépasser une profondeur finalement relativement faible de part et d'autre du bord transversal de pivotement des extrémités de languette.The noble metals of the coatings of electrical connection between the common and the central tongues have a good ductility and the anchoring of the free ends of the tongues in the notches of the joint, during the use of the switch and because of this ductility and of the pivoting of the tongue ends, is accentuated but so as not to exceed a ultimately relatively shallow depth on either side of the transverse edge of pivoting of the tongue ends.
Pour fixer les idées, et pour une épaisseur de languette de lame, c'est-à-dire une largeur de face transversale d'extrémité de languette, d'environ 100 µm, la profondeur d'ancrage des languettes dans l'articulation, lorsque l'interrupteur est neuf, est d'environ 1 µm et, après usage, elle ne dépasse pas 5 µm en moyenne.To fix the ideas, and for a thickness of the blade tongue, that is to say a width of the transverse face of the tongue end, of approximately 100 μm, the depth of anchoring of the tongues in the joint, when the switch is new, is about 1 µm and, after use, it does not exceed 5 µm on average.
La présente invention concerne donc un procédé de réalisation, par découpe dans un ruban, d'une lame porte-contacts d'un interrupteur agencée pour relier électriquement une borne d'entrée à l'une ou l'autre de deux bornes de sortie de l'interrupteur et comportant deux languettes qui, par leurs extrémités libres, réunies avant découpe, sont montées pivotantes sur une articulation solidaire de la borne d'entrée, la liaison électrique entre l'articulation et les languettes étant assurée par des revêtements d'un métal ductile, procédé caractérisé par le fait qu'on découpe la lame dans le ruban qui a préalablement été revêtu d'une couche du métal.The present invention therefore relates to a process for producing, by cutting from a ribbon, a contact-carrying blade of a switch arranged to electrically connect an input terminal to one or the other of two output terminals of the switch and comprising two tongues which, by their free ends, joined before cutting, are pivotally mounted on a joint integral with the input terminal, the electrical connection between the joint and the tongues being provided by coatings of a ductile metal, process characterized by the fact that the blade is cut from the strip which has previously been coated with a layer of metal.
Grâce au procédé de l'invention, la tranche de l'extrémité de pivotement d'une languette est revêtue du métal de liaison électrique, par nature ductile, par étirage et transfert, sur une profondeur parfaitement suffisante, d'une partie du revêtement de surface du ruban adjacente au bord découpé de la languette. Dès la lame découpée, elle peut être montée sur l'articulation avant que ne soient poursuivies les autres étapes du procédé de fabrication de l'interrupteur.Thanks to the process of the invention, the edge of the pivoting end of a tongue is coated with the electrical bonding metal, which is ductile in nature, by stretching and transfer, to a perfectly perfect depth. sufficient, of part of the surface covering of the tape adjacent to the cut edge of the tongue. From the cut blade, it can be mounted on the joint before the other stages of the switch manufacturing process are continued.
Dans la mise en oeuvre préférée du procédé de l'invention, pour réaliser les languettes avec leurs extrémités libres, on cisaille le ruban entre une matrice fixe, à une arête et une face de coupe, sur laquelle repose une partie du ruban destinée à devenir l'une des deux languettes, et un poinçon mobile qu'on déplace parallèlement à la face de coupe de la matrice.In the preferred implementation of the method of the invention, to produce the tongues with their free ends, the ribbon is sheared between a fixed die, at an edge and a cutting face, on which rests a part of the ribbon intended to become one of the two tongues, and a movable punch which is moved parallel to the cutting face of the die.
La présente invention concerne aussi la lame porte-contacts d'interrupteur, réalisée selon le procédé de l'invention, comportant deux languettes à extrémité libre, agencées pour être montées pivotantes sur une articulation de l'interrupteur et portant un revêtement de métal ductile de liaison électrique avec l'articulation, en surface et sur la tranche de leur extrémité libre, caractérisée par le fait que le revêtement de la tranche des languettes ne s'étend qu'en partie sur celle-ci.The present invention also relates to the switch contact-holder blade, produced according to the method of the invention, comprising two tongues with free ends, arranged to be pivotally mounted on an articulation of the switch and carrying a coating of ductile metal of electrical connection with the joint, on the surface and on the edge of their free end, characterized in that the coating of the edge of the tongues extends only in part thereon.
L'invention sera mieux comprise à l'aide de la description suivante du procédé de réalisation de la lame porte-contacts de l'invention et de la lame elle-même, en référence au dessin annexé sur lequel :
- la figure 1 représente une vue latérale de la lame porte-contacts de l'invention, montée sur son articulation ;
- la figure 2 représente une vue en plan de la lame de la figure 1 ;
- la figure 3 représente, à plus grande échelle, une vue latérale de l'extrémité libre d'une des languettes de la lame de la figure 1 dans l'encoche de réception associée de l'articulation et
- les figures 4A et 4B illustrent la réalisation par découpe des extrémités libres des languettes de la lame de la figure 1.
- FIG. 1 represents a side view of the contact-carrying blade of the invention, mounted on its articulation;
- Figure 2 shows a plan view of the blade of Figure 1;
- FIG. 3 represents, on a larger scale, a side view of the free end of one of the tongues of the blade of FIG. 1 in the associated receiving notch of the joint and
- FIGS. 4A and 4B illustrate the production by cutting of the free ends of the tongues of the blade of FIG. 1.
Les caractéristiques de la lame de l'invention introduites ci-dessus, dans le préambule de cette description, ne seront pas reprises ici. Précisons quand même que le jeu 12, entre les languettes centrales 3, 4 et les bras latéraux 11 de la lame, est bien visible sur la figure 2. L'extrémité 10 de la lame porte, sur ses faces parallèles hors des plans desquelles les languettes peuvent faire saillie, des plots de contact 13, 14, ici soudés électriquement, pour que la lame, par l'intermédiaire de l'articulation 2, relie électriquement la borne d'entrée 15, de laquelle l'articulation 2 est solidaire, à l'une ou l'autre des deux bornes de sortie 16, 17 de l'interrupteur portant chacune un plot de contact 18, 19 en regard respectivement des plots 13, 14 de la lame.The characteristics of the blade of the invention introduced above, in the preamble to this description, will not be repeated here. However, it should be noted that the
La lame a été découpée, et on y reviendra plus loin, dans un ruban revêtu, sur ses deux faces, correspondant à celles évoquées ci-dessus et portant les plots 13, 14, de deux couches de métal conducteur ductile 20, 21. L'articulation 2 est également revêtue d'une couche de métal conducteur ductile 22. Les couches de métal 20-22 assurent la bonne liaison électrique entre l'articulation 2 et les languettes 3, 4. Les tranches 23, 24, c'est-à-dire les faces transversales d'extrémité, des languettes 3, 4 comportent également un revêtement de métal 27, 25 mais qui ne s'étend qu'en partie sur ces tranches, depuis leur bord transversal 28, 26 de pivotement dans les encoches 7, 8.The blade has been cut, and we will come back to this later, in a coated ribbon, on its two faces, corresponding to those mentioned above and carrying the
Comme métal de liaison électrique, on peut employer, pour des courants importants, l'argent qui est un excellent conducteur et, pour des courants faibles, l'or qui a une bonne résistance à la corrosion.As an electrical bonding metal, silver, which is an excellent conductor, can be used for large currents, and gold, which has good corrosion resistance, for low currents.
A titre d'exemple, et pour considérer une réalisation effective, la lame a été découpée dans un ruban de cuprobéryllium CuBe₂ de 14 mm de large et 100 µm d'épaisseur revêtu, sur ses deux faces, d'une couche d'argent Ag de 0,3 µm d'épaisseur. L'articulation, en laiton CuZn, a été revêtue d'une couche d'argent de 3 à 5 µm d'épaisseur, ici particulièrement faible. La couche d'argent, sur la tranche des languettes, s'étend sensiblement sur une épaisseur de 20 µm, amplement suffisante pour assurer un bon contact Ag sur Ag lors des pivotements de l'extrémité 6 de la languette 4, d'environ 2 degrés.By way of example, and to consider an effective implementation, the blade was cut from a
Le découpage d'une lame porte-contacts de l'invention est réalisé au moyen d'une matrice fixe, composée de plusieurs éléments correspondant aux différentes parties de la lame, et d'une série de poinçons mobiles associés. Ce découpage est réalisé de façon parfaitement classique; pour ce qui concerne les extrémités libres des languettes, réunies avant découpe, il est procédé à un transfert de métal le long du bord de pivotement des languettes.The cutting of a contact-carrying blade of the invention is carried out by means of a fixed matrix, composed of several elements corresponding to the different parts of the blade, and of a series of associated movable punches. This cutting is carried out in a perfectly conventional manner; as regards the free ends of the tongues, assembled before cutting, a metal transfer is carried out along the pivoting edge of the tongues.
Pour la découpe des extrémités libres 5, 6 des languettes 3, 4, et en référence d'abord à la figure 4A, on utilise un élément de matrice 29, à face d'appui 37, face de coupe 31, perpendiculaire à la face 37, et arête de coupe 30, et un poinçon 32. Le poinçon 32 est monté pour être déplacé parallèlement à la face de coupe 31 de la matrice 29, dans la direction de la flèche 36. Le poinçon 32 possède une arête de coupe 33 et une face de coupe 34 parallèle à la direction de déplacement 36. Enfin, la face frontale 35 du poinçon est, de façon classique, dégagée du plan perpendiculaire à la direction de déplacement 36 passant par l'arête de coupe 33.For the cutting of the
En référence à la figure 4B, en déplaçant le poinçon 32 dans la direction de la flèche 36, et après avoir posé sur la face 37 de la matrice 29 la partie de ruban qui correspondra à la languette 3, le ruban est découpé pour former les deux extrémités libres 5, 6, l'extrémité libre 5, avec une tranche 23, et l'extrémité libre 6, avec une tranche 24 formée par l'arête de coupe 30 et la face 31 de la matrice 29. Le premier bord transversal 28 de l'extrémité libre 5 de la languette 3, destiné à devenir le bord de pivotement, est arrondi de façon convexe par le poinçon avec étirage et transfert d'une partie 27 du métal de la couche 20 sur la tranche 23. Quant au deuxième bord, créé au voisinage de l'arête de coupe 30 de la matrice, il est aussi arrondi mais de façon concave, avec étirage en pointe d'une partie du métal de la couche 21. Il en est de même pour l'extrémité libre 6 de l'autre languette 4. Le premier bord transversal 26, destiné à devenir le bord de pivotement, est arrondi de façon convexe avec étirage et transfert d'une partie 25 du métal de la couche 21 sur la tranche 24. Quant au deuxième bord, proche du second bord de la première languette 3, il est aussi arrondi de façon concave avec étirage en pointe d'une partie du métal de la couche 20.With reference to FIG. 4B, by moving the
On remarquera que, comme environ 10 % seulement du courant passe à travers la languette 3 et les bras 11, au plan électrique, le bord 28 de la languette 3 est beaucoup moins important que le bord 26 de la languette 4.Note that, as only about 10% of the current flows through the
On soulignera aussi que, comme le pivotement de la languette 4 est faible, de l'ordre de 2 degrés, son bord 26 est d'autant plus important que le contact de la languette 4 avec la couche de métal 22 de l'articulation 2, lors du fonctionnement de l'interrupteur, s'effectue exclusivement par ce bord 26.It will also be emphasized that, as the pivoting of the
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9110992A FR2681184B1 (en) | 1991-09-05 | 1991-09-05 | METHOD FOR PRODUCING, BY CUTTING FROM A TAPE, A CONTACTOR SWITCH BLADE AND A BLADE MADE ACCORDING TO THE PROCESS. |
| FR9110992 | 1991-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0531222A1 true EP0531222A1 (en) | 1993-03-10 |
| EP0531222B1 EP0531222B1 (en) | 1996-12-18 |
Family
ID=9416667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92402422A Expired - Lifetime EP0531222B1 (en) | 1991-09-05 | 1992-09-04 | Process for making a contact carrying blade of a switch by cutting a band and blade made by this process |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0531222B1 (en) |
| DE (1) | DE69216012T2 (en) |
| FR (1) | FR2681184B1 (en) |
| HK (1) | HK1000224A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0614203A1 (en) * | 1993-03-05 | 1994-09-07 | CROUZET Automatismes | Articulation for the reed of a microswitch |
| CN111525260A (en) * | 2020-04-22 | 2020-08-11 | 深圳市广和通无线股份有限公司 | Antenna device |
| CN113035614A (en) * | 2021-03-12 | 2021-06-25 | 宁波华科汽车零部件有限公司 | Movable contact piece cutting mechanism for combined switch and using method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1390344A (en) * | 1964-01-14 | 1965-02-26 | Process for obtaining pads for contactors | |
| GB2088133A (en) * | 1980-11-03 | 1982-06-03 | Crouzet Sa | Snap-action Switch |
| EP0395810A2 (en) * | 1989-05-05 | 1990-11-07 | Alco Electronic Products, Inc. | Snap action switch |
-
1991
- 1991-09-05 FR FR9110992A patent/FR2681184B1/en not_active Expired - Fee Related
-
1992
- 1992-09-04 DE DE1992616012 patent/DE69216012T2/en not_active Expired - Lifetime
- 1992-09-04 EP EP92402422A patent/EP0531222B1/en not_active Expired - Lifetime
-
1997
- 1997-09-06 HK HK97101735A patent/HK1000224A1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1390344A (en) * | 1964-01-14 | 1965-02-26 | Process for obtaining pads for contactors | |
| GB2088133A (en) * | 1980-11-03 | 1982-06-03 | Crouzet Sa | Snap-action Switch |
| EP0395810A2 (en) * | 1989-05-05 | 1990-11-07 | Alco Electronic Products, Inc. | Snap action switch |
Non-Patent Citations (1)
| Title |
|---|
| IBM TECHNICAL DISCLOSURE BULLETIN vol. 18, no. 10, Mars 1976, NEW YORK pages 3405 - 3406 W. M. DAVIS 'wafer switch' * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0614203A1 (en) * | 1993-03-05 | 1994-09-07 | CROUZET Automatismes | Articulation for the reed of a microswitch |
| CN111525260A (en) * | 2020-04-22 | 2020-08-11 | 深圳市广和通无线股份有限公司 | Antenna device |
| CN111525260B (en) * | 2020-04-22 | 2021-10-08 | 深圳市广和通无线股份有限公司 | Antenna device |
| CN113035614A (en) * | 2021-03-12 | 2021-06-25 | 宁波华科汽车零部件有限公司 | Movable contact piece cutting mechanism for combined switch and using method thereof |
| CN113035614B (en) * | 2021-03-12 | 2022-09-13 | 宁波华科汽车零部件有限公司 | Movable contact piece cutting mechanism for combined switch and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69216012D1 (en) | 1997-01-30 |
| FR2681184B1 (en) | 1995-03-31 |
| EP0531222B1 (en) | 1996-12-18 |
| FR2681184A1 (en) | 1993-03-12 |
| HK1000224A1 (en) | 1998-02-06 |
| DE69216012T2 (en) | 1997-06-12 |
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