EP0427139B1 - Switch - Google Patents

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Publication number
EP0427139B1
EP0427139B1 EP90121035A EP90121035A EP0427139B1 EP 0427139 B1 EP0427139 B1 EP 0427139B1 EP 90121035 A EP90121035 A EP 90121035A EP 90121035 A EP90121035 A EP 90121035A EP 0427139 B1 EP0427139 B1 EP 0427139B1
Authority
EP
European Patent Office
Prior art keywords
switch
microcontacts
support
switch according
actuator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90121035A
Other languages
German (de)
French (fr)
Other versions
EP0427139A1 (en
Inventor
Philippe Boulay
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.)
Alcatel CIT SA
Original Assignee
Alcatel Mobile Communication France SA
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 Alcatel Mobile Communication France SA filed Critical Alcatel Mobile Communication France SA
Publication of EP0427139A1 publication Critical patent/EP0427139A1/en
Application granted granted Critical
Publication of EP0427139B1 publication Critical patent/EP0427139B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/63—Contacts actuated by axial cams
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/01—Actuators other then push button also rotatable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/014—Slide selector

Abstract

The invention relates to a mechanically actuated switch. The switch comprises an operating lever (1) provided with an actuating cam (2) and a switching member (8), the latter fixed to a support (4), which contains a plurality of microcontacts (15). It comprises means of moving the operating lever (1) so that the actuating cam (2) can actuate at least two of these microcontacts (15) in succession. <IMAGE>

Description

La présente invention concerne un commutateur à actionnement mécanique.The present invention relates to a mechanically actuated switch.

Les commutateurs de ce type comprennent généralement un levier de commande mobile en rotation ou en translation et un organe de commutation. Cet organe comporte des éléments de contact fixes et un axe actionné par le levier de commande, qui supporte des éléments de contact mobiles susceptibles de s'appliquer sur certains des éléments de contacts fixes. Il occupe un volume qui est imposé par le mécanisme faisant coopérer les deux types d'éléments de contact. Dans certains appareils fortement intégrés, ce volume est incompatible avec les contraintes d'encombrement.Switches of this type generally include a control lever that can move in rotation or in translation and a switching member. This member comprises fixed contact elements and an axis actuated by the control lever, which supports movable contact elements capable of being applied to some of the fixed contact elements. It occupies a volume which is imposed by the mechanism making the two types of contact elements cooperate. In some highly integrated devices, this volume is incompatible with space constraints.

De plus, lorsqu'une bonne étanchéité du commutateur est souhaitée, la traversée de l'axe dans l'organe de commutation nécessite l'emploi de joints qui nuisent à la fiabilité du dispositif.In addition, when a good tightness of the switch is desired, the crossing of the axis in the switching member requires the use of seals which affect the reliability of the device.

Il est ainsi connu, par l'article "Sliding selector switch" paru dans le volume 22, numéro 6 de novembre 1979 de "IBM Technical Disclosure Bulletin" (page 2324), un commutateur répondant à ces impératifs. Cependant, ce commutateur qui comprend, solidaire du levier de commande, une came d'actionnement prévue pour actionner des microcontacts, sous-entend une mobilité relative de cette came dans la direction perpendiculaire au plan défini par les microcontacts. Le sous-ensemble formé du levier de commande et de la came d'actionnement est donc une pièce mécanique répondant à certaines contraintes, notamment d'élasticité.It is thus known, by the article "Sliding selector switch" published in volume 22, number 6 of November 1979 of "IBM Technical Disclosure Bulletin" (page 2324), a switch meeting these requirements. However, this switch which comprises, integral with the control lever, an actuating cam provided for actuating microswitches, implies a relative mobility of this cam in the direction perpendicular to the plane defined by the microswitches. The sub-assembly formed by the control lever and the actuating cam is therefore a mechanical part meeting certain constraints, in particular of elasticity.

La présente invention a ainsi pour objet un commutateur de faible encombrement, présentant une grande étanchéité, dans lequel ce sous-ensemble est sensiblement simplifié.The present invention thus relates to a compact switch, having a large seal, in which this sub-assembly is substantially simplified.

Le commutateur selon l'invention comprend un levier de commande et un organe de commutation fixé sur un support et pourvu d'une pluralité de microcontacts, le levier de commande ayant une came d'actionnement au moins, ce commutateur comprenant de plus des moyens pour mouvoir le levier de commande afin que la came d'actionnement puisse actionner succesivement deux au moins des microcontacts, et se caractérise en ce que l'organe de commutation est réalisé selon la technologie des plastrons à bulles, et en ce que la came d'actionnement évolue en permanence à la même distance du support.The switch according to the invention comprises a control lever and a switching member fixed on a support and provided with a plurality of microswitches, the control lever having at least one actuating cam, this switch further comprising means for move the control lever so that the actuating cam can successively actuate at least two of the microswitches, and is characterized in that the switching member is produced according to the technology of bubble faceplates, and in that the cam actuation is constantly evolving at the same distance from the support.

De plus, dans le commutateur, le support comprend des encoches et le levier de commande comprend un dispositif d'indexation qui coopére avec ces encoches de manière à immobiliser la came d'actionnement sur un des micro-contacts.In addition, in the switch, the support comprises notches and the control lever comprises an indexing device which cooperates with these notches so as to immobilize the actuating cam on one of the micro-contacts.

Dans un premier mode de réalisation du commutateur, le levier de commande est mobile en rotation.In a first embodiment of the switch, the control lever is movable in rotation.

Dans un deuxième mode de réalisation du commutateur le levier de commande est mobile en translation.In a second embodiment of the switch, the control lever is movable in translation.

De plus, dans le commutateur chacun des microcontacts est recouvert d'une bulle.In addition, in the switch each of the microswitches is covered with a bubble.

Dans une variante du commutateur les microcontacts sont recouverts par un seul motif.In a variant of the switch, the microswitches are covered by a single pattern.

Selon une caractéristique additionnelle du commutateur, les conducteurs électriques raccordés aux microcontacts sont réunis en un peigne qui est prévu pour s'insérer dans un connecteur pour circuits souples.According to an additional characteristic of the switch, the electrical conductors connected to the microswitches are combined in a comb which is designed to fit into a connector for flexible circuits.

Les différents objets et caractéristiques de l'invention ressortiront avec plus de précision dans le cadre d'exemples de réalisation donnés à titre non limitatif en se référant aux figures annexées qui représentent :

  • la figure 1, une vue en coupe d'un commutateur rotatif selon l'invention,
  • la figure 2 une vue de dessus du commutateur représenté dans la figure 1,
  • les figures 3A et 3B, un schéma en coupe, respectivement une vue de dessus, d'un motif,
  • la figure 4, une variante de réalisation d'un commutateur rotatif,
  • la figure 5, une vue en coupe d'un commutateur linéaire,
  • la figure 6, une vue de dessus de ce commutateur linéaire.
The various objects and characteristics of the invention will emerge more precisely in the context of exemplary embodiments given without limitation, with reference to the appended figures which represent:
  • FIG. 1, a sectional view of a rotary switch according to the invention,
  • FIG. 2 a top view of the switch represented in FIG. 1,
  • FIGS. 3A and 3B, a sectional diagram, respectively a top view, of a pattern,
  • FIG. 4, an alternative embodiment of a rotary switch,
  • FIG. 5, a sectional view of a linear switch,
  • Figure 6, a top view of this linear switch.

Les éléments présents dans différentes figures porteront une seule référence.The elements present in different figures will bear a single reference.

Le commutateur représenté en coupe dans la figure 1 et vu de dessus dans la figure 2 comprend un levier de commande 1 du type bouton pourvu d'une came d'actionnement 2. Ce bouton est fixé sur un axe 3 par collage, par vissage ou par tout moyen connu, cet axe étant maintenu sur un support 4 au moyen d'un épaulement 5 et pouvant tourner sur lui-même. Il comprend également un dispositif d'indexation du type comportant une bille 6 qui peut s'engager dans l'une des encoches 7 du support 4. Le commutateur comprend aussi un organe de commutation 8 fixé sur le support 4.The switch shown in section in FIG. 1 and seen from above in FIG. 2 comprises a control lever 1 of the button type provided with an actuating cam 2. This button is fixed to an axis 3 by gluing, by screwing or by any known means, this axis being maintained on a support 4 by means of a shoulder 5 and being able to rotate on itself. It also includes an indexing device of the type comprising a ball 6 which can engage in one of the notches 7 of the support 4. The switch also includes a switching member 8 fixed on the support 4.

Dans un premier mode de réalisation, l'organe de commutation est réalisé selon la technologie connue des plastrons à bulles qui est employée notamment pour la fabrication de claviers. Il comprend une couche active 9 recouverte sur sa face supérieure d'une couche externe 10 qui supporte les bulles 11, et sur sa face inférieure d'une couche adhérente 12 qui assure la fixation sur la face supérieure du support 4. Les bulles 11 sont disposées sur un cercle dont le rayon est égal à la distance qui sépare la came d'actionnement 2 de l'axe du bouton de commande 1.In a first embodiment, the switching is carried out according to the known technology of bubble faceplates which is used in particular for the manufacture of keyboards. It comprises an active layer 9 covered on its upper face with an external layer 10 which supports the bubbles 11, and on its lower face with an adhesive layer 12 which ensures the attachment to the upper face of the support 4. The bubbles 11 are arranged on a circle whose radius is equal to the distance which separates the actuating cam 2 from the axis of the control button 1.

La couche active 9 comprend au centre de chaque bulle 11 un micro-contact 15 qui établit la connexion électrique entre deux conducteurs électriques 16, 17 si la bulle est soumise à une pression exercée perpendiculairement au plan du support 4 par la came d'actionnement 2. Lorsque la pression est relachée, le contact s'ouvre sous l'effet de l'élasticité de la bulle. L'ensemble des conducteurs des micro-contacts est réuni en un peigne 18 qui s'insère dans un connecteur pour circuits souples. Ce type de raccordement est également connu dans la fabrication des claviers.The active layer 9 comprises at the center of each bubble 11 a micro-contact 15 which establishes the electrical connection between two electrical conductors 16, 17 if the bubble is subjected to a pressure exerted perpendicular to the plane of the support 4 by the actuating cam 2 When the pressure is released, the contact opens under the effect of the elasticity of the bubble. All of the microswitch conductors are joined together in a comb 18 which is inserted into a connector for flexible circuits. This type of connection is also known in the manufacture of keyboards.

Dans un deuxième mode de réalisation de l'organe de commutation représenté dans la figure 3, l'ensemble des considérations précédentes s'appliquent à l'exception de la constitution de la couche externe 10. Cette couche ne comprend plus de bulles mais un seul motif, une section de tore 20 dont l'axe de symétrie est commun à celui du bouton de commande 11. Les micro-contacts 15 sont disposés sur un cercle dont le rayon est sensiblement égal au rayon médian de la section de tore 20 et dont le centre coïncide avec cet axe de symétrie. Cette section de tore 20, comme les bulles 11, est réalisée par thermoformage.In a second embodiment of the switching member shown in FIG. 3, all of the above considerations apply with the exception of the constitution of the outer layer 10. This layer no longer comprises bubbles but only one pattern, a torus section 20 whose axis of symmetry is common to that of the control button 11. The micro-contacts 15 are arranged on a circle whose radius is substantially equal to the median radius of the torus section 20 and whose the center coincides with this axis of symmetry. This toroid section 20, like the bubbles 11, is produced by thermoforming.

Dans les deux réalisations précédemment décrites l'étanchéité est assurée par le système du type plastron à bulles car, contrairement aux dispostifs connus, l'organe de commutation n'a pas de liaison mécanique avec un composant extérieur. La commutation se réalise par pression. De plus l'encombrement de l'organe de commutation se réduit à l'épaisseur d'un film.In the two embodiments described above, the seal is ensured by the system of the bubble plastron type because, unlike known devices, the switching member has no mechanical connection with an external component. Switching takes place by pressing. In addition, the size of the switching member is reduced to the thickness of a film.

Par ailleurs, l'organe de commutation 8 et le bouton de commande 1 sont situés du même côté du support 4. Dans une variante de réalisation représentée dans la figure 4, ils sont situés de part et d'autre de ce support. Seuls les éléments essentiels du dispositif ont été schématisés. La bille 6 et les encoches 7 se situent indifféremment d'un côté ou de l'autre du support 4.Furthermore, the switching member 8 and the control button 1 are located on the same side of the support 4. In an alternative embodiment shown in FIG. 4, they are located on either side of this support. Only the essential elements of the system have been shown schematically. The ball 6 and the notches 7 are located either on one side or the other of the support 4.

Dans les différents exemples qui précèdent, le bouton de commande est pourvu d'une seule came d'actionnement. Sans sortir du cadre de l'invention, il peut en comporter plusieurs.In the various examples above, the control button is provided with a single actuating cam. Without departing from the scope of the invention, it may include several.

L'invention a été décrite relativement à un commutateur rotatif. Elle s'applique aussi à un commutateur linéaire représenté en coupe dans la figure 5 et vu de dessus dans la figure 6. Le support 4 présente une rainure 30. L'épaulement 5 de l'axe 3 du bouton de commande est disposé de manière à ce que ce bouton soit maintenu sensiblement au contact du support 4 et puisse coulisser dans la rainure 30. Les microcontacts 15, les bulles 11 et les encoches 7 qui ont la même action ici que dans le commutateur rotatif, sont placés parallèlement à la rainure 30 de manière à ce que le bouton de commande 1 qui est immobile en rotation agisse correctement sur chaque contact élémentaire. De même que dans le commutateur rotatif il a été envisagé de remplacer les bulles par une section de tore, on peut ici les remplacer par un motif tel qu'une section de cylindre. La rainure 30 qui est rectiligne dans la figure 6, peut prendre une forme incurvée sans sortir du cadre de l'invention.The invention has been described in relation to a rotary switch. It also applies to a linear switch shown in section in Figure 5 and viewed from above in Figure 6. The support 4 has a groove 30. The shoulder 5 of the axis 3 of the control button is arranged so so that this button is held substantially in contact with the support 4 and can slide in the groove 30. The microswitches 15, the bubbles 11 and the notches 7 which have the same action here as in the rotary switch, are placed parallel to the groove 30 so that the control button 1 which is stationary in rotation acts correctly on each elementary contact. As in the rotary switch, it has been envisaged to replace the bubbles with a section of torus, here it is possible to replace them with a pattern such as a section of cylinder. The groove 30 which is rectilinear in Figure 6, can take a curved shape without departing from the scope of the invention.

Claims (7)

  1. Switch comprising an actuator lever (1) and a switching unit (8) fixed to a support (4) and having a plurality of microcontacts (15), said actuator lever (1) having at least one actuator cam (2), said switch further comprising means for moving said actuator lever (1) so that said actuator cam (2) can actuate successively at least two of said microcontacts (15), characterised in that said switching unit (8) uses the bubble switch technology and in that said actuator cam moves at all times at the same distance from said support.
  2. Switch according to the preceding claim characterised in that said support (4) comprises notches (7) and in that said actuator lever (1) comprises an indexing device (6) which cooperates with said notches (7) to immobilise said actuator cam (2) at least on one of said microcontacts (15).
  3. Switch according to either of the preceding claims characterised in that said actuator lever (1) is rotatable.
  4. Switch according to claim 1 or claim 2 characterised in that said actuator lever (1) is mobile in translation.
  5. Switch according to any one of the preceding claims characterised in that each of said microcontacts (15) is covered by a bubble (11).
  6. Switch according to any one of claims 1 to 4 characterised in that all said microcontacts (15) are covered by a single pattern (20).
  7. Switch according to any one of the preceding claims characterised in that the electrical conductors (16, 17) connected to the microcontacts (15) are combined in a ribbon cable (18) which is adapted to be inserted into a flexible circuit connector.
EP90121035A 1989-11-09 1990-11-02 Switch Expired - Lifetime EP0427139B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8914692 1989-11-09
FR8914692A FR2654250B1 (en) 1989-11-09 1989-11-09 SWITCH.

Publications (2)

Publication Number Publication Date
EP0427139A1 EP0427139A1 (en) 1991-05-15
EP0427139B1 true EP0427139B1 (en) 1995-02-22

Family

ID=9387227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121035A Expired - Lifetime EP0427139B1 (en) 1989-11-09 1990-11-02 Switch

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EP (1) EP0427139B1 (en)
AT (1) ATE118921T1 (en)
DE (1) DE69017147T2 (en)
DK (1) DK0427139T3 (en)
ES (1) ES2069652T3 (en)
FI (1) FI98004C (en)
FR (1) FR2654250B1 (en)
NO (1) NO179429C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10203114A1 (en) * 2002-01-25 2003-07-31 Oliver Voelckers Control element based on a membrane switch for operating an electronically controlled electrical device and method for evaluating the switching pulses triggered by the control element

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377604A (en) * 1967-04-26 1968-04-09 Acton Lab Inc Electrical devices with frictionless flexible contacts
DE3636575A1 (en) * 1986-10-28 1988-05-05 Standard Elektrik Lorenz Ag ROTARY SWITCH
SU1415258A1 (en) * 1987-01-22 1988-08-07 Предприятие П/Я А-3327 Switching device

Also Published As

Publication number Publication date
NO904837L (en) 1991-05-10
DE69017147D1 (en) 1995-03-30
NO904837D0 (en) 1990-11-07
NO179429B (en) 1996-06-24
DE69017147T2 (en) 1995-06-22
DK0427139T3 (en) 1995-06-06
FI98004C (en) 1997-03-25
ATE118921T1 (en) 1995-03-15
NO179429C (en) 1996-10-02
FR2654250B1 (en) 1995-10-13
FI98004B (en) 1996-12-13
FI905524A0 (en) 1990-11-07
EP0427139A1 (en) 1991-05-15
FR2654250A1 (en) 1991-05-10
ES2069652T3 (en) 1995-05-16

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