EP0780863B1 - Dispositif pour l'établissement d'une connexion électrique - Google Patents

Dispositif pour l'établissement d'une connexion électrique Download PDF

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Publication number
EP0780863B1
EP0780863B1 EP96120451A EP96120451A EP0780863B1 EP 0780863 B1 EP0780863 B1 EP 0780863B1 EP 96120451 A EP96120451 A EP 96120451A EP 96120451 A EP96120451 A EP 96120451A EP 0780863 B1 EP0780863 B1 EP 0780863B1
Authority
EP
European Patent Office
Prior art keywords
circuit board
pressure
contact
pressure pins
pressure dome
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
EP96120451A
Other languages
German (de)
English (en)
Other versions
EP0780863A3 (fr
EP0780863A2 (fr
Inventor
Werner Mayer
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.)
Harman Becker Automotive Systems GmbH
Original Assignee
Becker GmbH
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 Becker GmbH filed Critical Becker GmbH
Publication of EP0780863A2 publication Critical patent/EP0780863A2/fr
Publication of EP0780863A3 publication Critical patent/EP0780863A3/fr
Application granted granted Critical
Publication of EP0780863B1 publication Critical patent/EP0780863B1/fr
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
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00—Venting
    • H01H2213/002—Venting with external pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble

Definitions

  • the present invention relates to a device for producing an electrical Connection between adjacent conductor points of a circuit board with a Contact mat made of an essentially flat part, one flat side of which Circuit board is arranged, and molded into the flat part, over the other flat side protruding print domes, each on their non-protruding Side with a contact surface facing the circuit board and relative to that flat part of the contact mat against an elastic restoring force between one Rest position and one of the adjacent conductor points of the circuit board electrically connecting contact position are displaceable.
  • Such devices are increasingly used for electrical switching operations used because these devices are inexpensive to manufacture and directly on the Switch plate can be switched, so that external switching and connecting means omitted. It is important with these devices that they have a high level of operational safety and have a long service life, especially when used in motor vehicle installations such as car radios.
  • the invention is therefore based on the object of the device mentioned type so that these disadvantages do not occur.
  • the functionality can be improved in that a suction of Contamination in the contact area between the pressure dome and the circuit board is largely prevented.
  • This object is achieved in that the space between the Contact surface of a pressure dome and the circuit board via a ventilation channel with the is connected to the side of the contact mat facing away from the circuit board.
  • the ventilation duct is preferably formed in the pressure dome, and in particular in the form of a central recess, which in the of the Circuit board opens the way to the top of the pressure dome.
  • the ventilation duct can be formed with a large cross section and a long length. Because of this large volume of the ventilation duct, it is ensured that the Venting actually takes place largely via the venting channel and suction of air from the area between the contact mat and the circuit board is prevented.
  • the pressure domes are on their top provided with a protruding spring element, which for supporting a Actuator for the pressure dome is used.
  • a protruding spring element which for supporting a Actuator for the pressure dome is used.
  • These spring elements also prevent between the pressure dome and the actuating device a rattling of the device by hitting the actuator on the Pressure dome when actuated.
  • the spring elements are preferably formed on the pressure dome without an undercut. On in this way, a one-piece production of the spring elements with the pressure dome and in particular the entire contact mat. The manufacturing cost of the Devices are kept low in this way.
  • the shaping of the spring elements also has the advantage that separate unfolding elements are eliminated.
  • the spring elements are as Spring tabs formed between the mouth for the Form ventilation duct.
  • the pressure domes are on their top provided with a central elevation projecting above the top.
  • This increase can in particular by dome or wave-shaped or by bevelled roof-like Formation of the top of the pressure domes must be formed.
  • this configuration there is a non-flat contact surface between the pressure dome and the actuating element.
  • this has the advantage that the contact surface of the actuating element rolls on the associated contact surface of the pressure dome. This ensures that the force input into the pressure dome is always in the takes place essentially centrally and therefore shear forces are avoided, as they are at flat Design of the surface of the pressure domes occur.
  • This configuration of the pressure domes of such a pair makes one Tilting of the pressure dome due to shear forces that occur when the seesaw-like element can be prevented. This will make one proper actuation of the pressure dome, including the one usually used with it connected tactile feedback guaranteed.
  • Another advantage of this embodiment is that it is a simple key Usual force-displacement diagram also observed with rocker-type actuators can be, even if the pivot point of the rocker is one has a large distance from the circuit board.
  • the pressure dome 1 shown in FIGS. 1 and 2 essentially has the shape of a Cylinder with an oval base and is provided with a central recess 2.
  • two spring tabs 4 are formed, which in essentially have a semi-dome-like shape and an opening 5 between them form, which is connected to the central recess 2 of the pressure dome 1.
  • the pressure dome 1 In the lower area of the pressure dome 1 there is an apron 6 running around it molded, which the pressure dome with the flat part 7 of the whole is not shown contact mat connects.
  • the bottom 8 of the pressure dome 1 is as Contact surface formed and with respect to the bottom 9 of the flat part 7 of the Contact mat set back. In this way, the contact surface 8 has a Circuit board seated bottom 9 of the contact mat a distance from the circuit board on.
  • the apron 6 in the lower region of the pressure dome 1 is elastic and acts as a reset element, which holds the pressure dome 1 in its rest position, in which the contact surface 8 is at a distance from the circuit board, not shown here.
  • By exerting a downward pressure on the pressure dome 1 it becomes against the restoring force generated by the apron 6 in the direction of the Switch plate moves until the contact surface 8 sits on the circuit board.
  • the restoring force is overcome, a tactile feedback is usually given generated to the user.
  • the spring tabs 4 on the top 3 of the pressure dome 1 are free of undercuts trained and can therefore in one piece with the pressure dome 1 and the contact mat getting produced. Due to their elasticity, the spring tabs 4 act on the one hand as Tolerance compensation between the actuator and pressure dome and prevent on the other hand a rattling when operating the pressure dome.
  • the pressure domes are 1 and 2 formed.
  • the seesaw-like is shown in more detail here Actuating element 11, which has a section 12 in a guide receptacle 13 sits.
  • Section 12 is supported on the two pressure domes 1 and is at Actuation of the rocker 11 via the section 14 in one direction or the other tilted relative to the guide receptacle 13.
  • a projection 15 which with the actuation of the rocker supports a curved section on a support 16 and rolls on this.
  • the two pressure domes 1 are on their Top 3 provided with a curvature formed by the spring tabs 4 on which engages an attack surface 17 of the rocker 11.
  • the contact surface 17 rolls on the spring tabs 4 of the Pressure domes 1, whereby the generation of shear forces on the pressure domes 1 is largely prevented.
  • This and the oval design of the pressure domes 1, tilting of the pressure domes 1 when actuated by the rocker 11 is prevented and proper operation combined with tactile feedback Overcoming the restoring force of the apron 6 ensured.
  • the force-displacement diagram the pressure dome 1 in the rocker 11 therefore corresponds to the force-displacement diagram by a simple push-button operated dome, and with it the feel.
  • Silicone is preferably used for the contact mat, which is in terms of Manufacturing, durability and operational safety has proven advantageous.

Landscapes

  • Push-Button Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (12)

  1. Dispositif pour l'établissement d'une connexion électrique entre des points conducteurs voisins d'une plaque de circuit avec une nappe de contact comprenant une partie (7) essentiellement plane dont un côté plan (9) est prévu sur la plaque de circuit et des dômes de pression (1), formés dans la partie plane (7), venant en saillie par rapport à l'autre face et ayant sur leur face non en saillie, des surfaces de contact (8) tournées vers la plaque de circuit et qui peuvent coulisser par rapport à la partie plane (7) de la nappe de contact, contre une force de rappel élastique entre une position de repos et une position de contact reliant électriquement les points conducteurs voisins de la plaque de circuit,
    caractérisé en ce que
    l'espace (10) entre la surface de contact (8) d'un dôme de pression (1) et la plaque de circuit est relié par un canal de ventilation (2) au côté de la nappe de contact à l'opposé de la plaque de circuit.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    le canal de ventilation (2) est réalisé chaque fois dans le dôme de pression (1).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que
    le canal de ventilation est réalisé sous la forme d'une cavité centrale (2).
  4. Dispositif selon les revendications 2 ou 3,
    caractérisé en ce que
    le canal de ventilation (2) débouche dans le côté supérieur (3) du dôme de pression (1) à l'opposé de la plaque de circuit.
  5. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    les dômes de pression (1) comportent, sur leur face supérieure (3), un élément élastique (4) venant en saillie, servant à l'appui d'un dispositif d'actionnement (11) du dôme de pression.
  6. Dispositif selon la revendication 5,
    caractérisé en ce que
    l'élément de ressort (4) est formé sur le dôme de pression (1) sans contre-dépouille.
  7. Dispositif selon l'une quelconque des revendications 5 ou 6,
    caractérisé en ce que
    l'élément de ressort est constitué par des pattes élastiques (4) laissant entre elles l'orifice de sortie (5) du canal de ventilation (2).
  8. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    les dômes de pression (1) sont munis sur leur face supérieure (3) d'un bossage central (4) dépassant de la face supérieure (3).
  9. Dispositif selon la revendication 8,
    caractérisé en ce que
    la face supérieure (3) du dôme de pression (1) a une forme ondulée ou une forme de coupole.
  10. Dispositif selon la revendication 8,
    caractérisé en ce que
    la face supérieure du dôme de pression (1) est inclinée en forme de dièdre.
  11. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé par
    des paires de dômes de pression (1) qui sont actionnées alternativement par l'intermédiaire d'un élément (11) en forme de bascule et les dômes de pression (1) d'une telle paire sont en coupe de forme essentiellement ovale, l'axe longitudinal (I) de la forme ovale étant dirigé respectivement dans la direction de la ligne de liaison des dômes de pression de chaque paire.
  12. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la nappe de contact est essentiellement en silicone.
EP96120451A 1995-12-20 1996-12-19 Dispositif pour l'établissement d'une connexion électrique Expired - Lifetime EP0780863B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19547566 1995-12-20
DE19547566A DE19547566C1 (de) 1995-12-20 1995-12-20 Vorrichtung zum Herstellen einer elektrischen Verbindung

Publications (3)

Publication Number Publication Date
EP0780863A2 EP0780863A2 (fr) 1997-06-25
EP0780863A3 EP0780863A3 (fr) 1998-07-22
EP0780863B1 true EP0780863B1 (fr) 2001-09-12

Family

ID=7780645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96120451A Expired - Lifetime EP0780863B1 (fr) 1995-12-20 1996-12-19 Dispositif pour l'établissement d'une connexion électrique

Country Status (3)

Country Link
EP (1) EP0780863B1 (fr)
AT (1) ATE205631T1 (fr)
DE (2) DE19547566C1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002056746A (ja) * 2000-08-07 2002-02-22 Alps Electric Co Ltd 可動接点付きシート及びシートスイッチ
US6765158B1 (en) * 2003-05-08 2004-07-20 Lear Corporation Low profile switch with flat wire harness

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603756A (en) * 1970-01-29 1971-09-07 Sperry Rand Corp Snap action switch
CH656018A5 (de) * 1983-09-19 1986-05-30 Siemens Ag Albis Tastschalter.
FR2576450A1 (fr) * 1985-01-22 1986-07-25 Hutchinson Clavier a elements de commande integres et auto-centres par rapport a sa face avant
US4654488A (en) * 1986-03-26 1987-03-31 Northern Telecom Limited Push and rocker action switch
DE3831314A1 (de) * 1988-09-15 1990-03-29 Hagenuk Telecom Gmbh Abdeckmatte fuer schaltungstraeger

Also Published As

Publication number Publication date
EP0780863A3 (fr) 1998-07-22
ATE205631T1 (de) 2001-09-15
DE19547566C1 (de) 1997-04-17
EP0780863A2 (fr) 1997-06-25
DE59607677D1 (de) 2001-10-18

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