FR2813996A1 - Electrical contact device, for use in e.g. electric commutators, comprises molded element incorporating at least one pastille with convex rounded contact surface - Google Patents
Electrical contact device, for use in e.g. electric commutators, comprises molded element incorporating at least one pastille with convex rounded contact surface Download PDFInfo
- Publication number
- FR2813996A1 FR2813996A1 FR0011644A FR0011644A FR2813996A1 FR 2813996 A1 FR2813996 A1 FR 2813996A1 FR 0011644 A FR0011644 A FR 0011644A FR 0011644 A FR0011644 A FR 0011644A FR 2813996 A1 FR2813996 A1 FR 2813996A1
- Authority
- FR
- France
- Prior art keywords
- contact surface
- electrically conductive
- pastille
- contacting
- rounded convex
- 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
Links
Classifications
-
- 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
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
- H01R13/2414—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means conductive elastomers
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- Contacts (AREA)
Abstract
Description
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La présente invention concerne le domaine des dispositifs de contactage électrique. <Desc / Clms Page number 1>
The present invention relates to the field of electrical contacting devices.
La présente invention peut trouver notamment, mais non exclusivement, application dans la conception de commutateurs électriques sous volant, pour véhicule automobile. The present invention can find in particular, but not exclusively, application in the design of electrical switches under the steering wheel, for a motor vehicle.
La présente invention s'applique par exemple à la réalisation de contact poussoir à position instable, par exemple pour la commande d'autoradio. The present invention applies for example to the production of an unstable push-button contact, for example for the control of a radio.
De nombreux dispositifs de contactage électrique ont déjà été proposés. Many electrical contacting devices have already been proposed.
On a proposé en particulier de nombreux dispositifs de contactage à base d'une membrane souple, par exemple en matériau silicone, munie d'une pastille électriquement conductrice, à base de poudre de carbone, voire de poudre de carbone dopée à l'argent ou à l'or. Un exemple d'un tel dispositif est illustré sur la figure 1 annexée. In particular, numerous contacting devices have been proposed based on a flexible membrane, for example made of silicone material, provided with an electrically conductive patch, based on carbon powder, or even carbon powder doped with silver or so. An example of such a device is illustrated in Figure 1 attached.
Par déformation d'une membrane silicone 10 sous l'effet de la sollicitation de tout moyen mécanique associé, une pastille 12 peut être déplacée en appui contre un élément conducteur placé en regard sur un support, ou plus généralement contre deux de tels éléments conducteurs associés séparés, afin de modifier un état de contactage électrique, par exemple la liaison entre les deux éléments précités placés en regard. By deformation of a silicone membrane 10 under the effect of the stress of any associated mechanical means, a pellet 12 can be moved in abutment against a conductive element placed opposite on a support, or more generally against two of such associated conductive elements separated, in order to modify an electrical contact state, for example the connection between the two aforementioned elements placed opposite.
Les dispositifs de contactage électrique du type précité ont déjà rendu de grands services. Electric contacting devices of the aforementioned type have already rendered great services.
Cependant, ils ne donnent pas toujours satisfaction. However, they are not always satisfactory.
En particulier, l'état de liaison électrique résultant n'est pas toujours satisfaisant quand l'élément conducteur prévu sur le support présente un défaut de planéité et/ou de parallélisme par rapport aux pastilles 12. In particular, the resulting state of electrical connection is not always satisfactory when the conductive element provided on the support has a flatness and / or parallelism defect with respect to the pellets 12.
Le but de la présente invention est de proposer de nouveaux moyens de contactage électrique permettant de garantir une fonction de commutation électrique. The object of the present invention is to propose new electrical contacting means making it possible to guarantee an electrical switching function.
Ce but est atteint dans le cadre de la présente invention grâce à un dispositif de contactage électrique caractérisé par le fait qu'il comprend un élément de contactage réalisé au moins partiellement par moulage en This object is achieved in the context of the present invention by means of an electrical contacting device characterized in that it comprises a contacting element produced at least partially by molding in
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matériau plastique électriquement conducteur et comportant une pastille présentant une surface de contact convexe arrondie. electrically conductive plastic material comprising a pellet having a rounded convex contact surface.
D'autres caractéristiques, buts et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre, et en regard des dessins annexés, donnés à titre d'exemple non limitatif et sur lesquels - la figure 1 précédemment décrite sommairement illustre un dispositif conforme à l'état de la technique, - la figure 2 représente une vue schématique en perspective d'une plaquette de contactage conforme à la présente invention, et - la figure 3 représente schématiquement, selon une vue en coupe, la coopération de cette plaquette de contactage conforme à la présente invention avec un élément de contactage complémentaire. Other characteristics, objects and advantages of the present invention will appear on reading the detailed description which follows, and with reference to the appended drawings, given by way of nonlimiting example and in which - FIG. 1 previously described briefly illustrated a device according to the state of the art, - Figure 2 shows a schematic perspective view of a contact plate according to the present invention, and - Figure 3 shows schematically, in a sectional view, the cooperation of this contact plate according to the present invention with a complementary contact element.
On a illustré sur les figures 2 et 3 annexées un ensemble de contactage électrique comprenant deux organes de contactage : un premier organe 20 comportant une plaquette réalisée conformément à la présente invention d'une part et un second organe 30 comprenant deux éléments électriquement conducteurs 32, 34 sur un support 36 d'autre part. Illustrated in FIGS. 2 and 3 annexed is an electrical contacting assembly comprising two contacting members: a first member 20 comprising a plate produced in accordance with the present invention on the one hand and a second member 30 comprising two electrically conductive elements 32, 34 on a support 36 on the other hand.
La plaquette 20 est réalisée conformément à la présente invention. II s'agit de préférence d'une plaquette globalement plane délimitée par deux flancs longitudinaux rectilignes et parallèles 21, 22 et deux calottes d'extrémité 23, 24 convexes vers l'extérieur, formées de préférence de secteur cylindrique et assurant la liaison entre les flancs longitudinaux 21, 22. La plaquette 20 est réalisée par moulage en matériau électriquement conducteur. The wafer 20 is produced in accordance with the present invention. It is preferably a generally flat plate delimited by two rectilinear and parallel longitudinal sides 21, 22 and two end caps 23, 24 convex towards the outside, preferably formed of cylindrical sector and ensuring the connection between the longitudinal sides 21, 22. The plate 20 is made by molding in an electrically conductive material.
En outre, conformément à l'invention, la plaquette 20 est munie, venue de moulage, de deux bossages 26, 28, en forme de calotte sphérique. In addition, in accordance with the invention, the plate 20 is provided, coming from molding, with two bosses 26, 28, in the form of a spherical cap.
Selon un mode de réalisation non limitatif - la largeur de la plaquette 20 entre les flancs longitudinaux 21, 22 est de l'ordre de 2,5 mm, - le rayon de courbure des calottes d'extrémité 23, 24 est de l'ordre de 4 mm, According to a nonlimiting embodiment - the width of the plate 20 between the longitudinal sides 21, 22 is of the order of 2.5 mm, - the radius of curvature of the end caps 23, 24 is of the order 4 mm,
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- le rayon de courbure des bossages 26, 28 est de l'ordre de 1 mm, - la hauteur en dépassement des calottes 26, 28 par rapport à la surface plane de la plaque de base 20 est de l'ordre de 0,2 mm, - l'épaisseur de la plaque de base 20 est de l'ordre de 0,5 mm, et - l'entraxe entre les bossages 26, 28 est de l'ordre de 2,5 mm. L'organe électriquement conducteur 30 conçu pour coopérer avec la plaquette 20 et conforme à la présente invention comprend un support 36 en matériau électriquement isolant muni de deux pistes 32, 34 électriquement conductrices séparées, de préférence en métal. De préférence, le support 36 est surmoulé sur les deux lames 32, 34. L'entraxe entre les deux lames 32, 34 est du même ordre que l'entraxe entre les bossages 26, 28. - the radius of curvature of the bosses 26, 28 is of the order of 1 mm, - the height beyond the caps 26, 28 relative to the flat surface of the base plate 20 is of the order of 0.2 mm, - the thickness of the base plate 20 is of the order of 0.5 mm, and - the distance between the bosses 26, 28 is of the order of 2.5 mm. The electrically conductive member 30 designed to cooperate with the wafer 20 and according to the present invention comprises a support 36 made of electrically insulating material provided with two separate electrically conductive tracks 32, 34, preferably made of metal. Preferably, the support 36 is molded onto the two blades 32, 34. The center distance between the two blades 32, 34 is of the same order as the center distance between the bosses 26, 28.
Au repos, l'un au moins des bossages 26, 28 est séparé de la lame 32, 34 placée en regard. At rest, at least one of the bosses 26, 28 is separated from the blade 32, 34 placed opposite.
Par contre, en position travail, les deux bossages 26, 28 reposent respectivement contre une lame 32, 34, pour relier celle-ci. On the other hand, in the working position, the two bosses 26, 28 rest respectively against a blade 32, 34, to connect the latter.
Le dispositif conforme à la présente invention présente de nombreux avantages par rapport à la technique antérieure. II permet notamment de garantir un bon contact électrique en s'affranchissant totalement, comme on le comprend notamment à l'examen de la figure 3, des défauts de planéité, de parallélisme, et de présence éventuelle de bavures pour les contacts homologues 32, 34, en raison de la forme bombée des contacts obtenus par moulage. The device according to the present invention has many advantages over the prior art. It makes it possible in particular to guarantee good electrical contact by completely eliminating, as is understood in particular on examining FIG. 3, defects in flatness, parallelism, and the possible presence of burrs for the homologous contacts 32, 34 , due to the domed shape of the contacts obtained by molding.
La présente invention permet également un assemblage simple et un processus de fabrication facilement automatisable. The present invention also allows simple assembly and an easily automated manufacturing process.
De préférence, dans le cadre de l'invention, le matériau composant l'élément de contactage 20 est réalisé en un matériau polyamide. Par ailleurs, il est de préférence chargé en fibre de carbone pour le rendre électriquement conducteur. Ainsi, il s'agit avantageusement de polyamide 6.6 chargé à 30% de fibre de carbone. Preferably, in the context of the invention, the material making up the contact element 20 is made of a polyamide material. Furthermore, it is preferably loaded with carbon fiber to make it electrically conductive. Thus, it is advantageously polyamide 6.6 loaded with 30% carbon fiber.
Bien entendu, la présente invention n'est pas limitée au mode de réalisation particulier qui vient décrit, mais s'étend à toute variante conforme à son esprit. Of course, the present invention is not limited to the particular embodiment which has just been described, but extends to any variant in accordance with its spirit.
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Claims (9)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0011644A FR2813996B1 (en) | 2000-09-13 | 2000-09-13 | ELECTRIC CONTACT DEVICE |
| EP01402356A EP1191563A1 (en) | 2000-09-13 | 2001-09-13 | Electrical contact device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0011644A FR2813996B1 (en) | 2000-09-13 | 2000-09-13 | ELECTRIC CONTACT DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2813996A1 true FR2813996A1 (en) | 2002-03-15 |
| FR2813996B1 FR2813996B1 (en) | 2003-12-12 |
Family
ID=8854232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0011644A Expired - Fee Related FR2813996B1 (en) | 2000-09-13 | 2000-09-13 | ELECTRIC CONTACT DEVICE |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1191563A1 (en) |
| FR (1) | FR2813996B1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3879586A (en) * | 1973-10-31 | 1975-04-22 | Essex International Inc | Tactile keyboard switch assembly with metallic or elastomeric type conductive contacts on diaphragm support |
| US3973099A (en) * | 1974-11-11 | 1976-08-03 | American Micro-Systems, Inc. | Push button switch for electronic watch |
| US4264477A (en) * | 1978-02-21 | 1981-04-28 | Chomerics, Inc. | Keyboard |
| DE3044414A1 (en) * | 1980-11-26 | 1982-06-24 | Licentia Gmbh | Electrical switch operated by key pressure - consists of embossed dome bulging from parent plastics sheet |
| JPS6145518A (en) * | 1984-08-07 | 1986-03-05 | 株式会社デンソー | Linear switch |
| EP0226904A2 (en) * | 1985-12-27 | 1987-07-01 | Hans Widmaier Fabrik für Apparate der Fernmelde- und Feinwerktechnik | Printed circuit, in particular for keyboards, and method for manufacturing such a printed circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5213715A (en) * | 1989-04-17 | 1993-05-25 | Western Digital Corporation | Directionally conductive polymer |
| US5636996A (en) * | 1994-06-28 | 1997-06-10 | The Whitaker Corporation | Anisotropic interposer pad |
-
2000
- 2000-09-13 FR FR0011644A patent/FR2813996B1/en not_active Expired - Fee Related
-
2001
- 2001-09-13 EP EP01402356A patent/EP1191563A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3879586A (en) * | 1973-10-31 | 1975-04-22 | Essex International Inc | Tactile keyboard switch assembly with metallic or elastomeric type conductive contacts on diaphragm support |
| US3973099A (en) * | 1974-11-11 | 1976-08-03 | American Micro-Systems, Inc. | Push button switch for electronic watch |
| US4264477A (en) * | 1978-02-21 | 1981-04-28 | Chomerics, Inc. | Keyboard |
| DE3044414A1 (en) * | 1980-11-26 | 1982-06-24 | Licentia Gmbh | Electrical switch operated by key pressure - consists of embossed dome bulging from parent plastics sheet |
| JPS6145518A (en) * | 1984-08-07 | 1986-03-05 | 株式会社デンソー | Linear switch |
| EP0226904A2 (en) * | 1985-12-27 | 1987-07-01 | Hans Widmaier Fabrik für Apparate der Fernmelde- und Feinwerktechnik | Printed circuit, in particular for keyboards, and method for manufacturing such a printed circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1191563A1 (en) | 2002-03-27 |
| FR2813996B1 (en) | 2003-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PLFP | Fee payment |
Year of fee payment: 17 |
|
| PLFP | Fee payment |
Year of fee payment: 18 |
|
| PLFP | Fee payment |
Year of fee payment: 19 |
|
| ST | Notification of lapse |
Effective date: 20200910 |