EP1294000B1 - Un commutateur électrique à couches multiples et à double action brusque - Google Patents

Un commutateur électrique à couches multiples et à double action brusque Download PDF

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Publication number
EP1294000B1
EP1294000B1 EP02019976.6A EP02019976A EP1294000B1 EP 1294000 B1 EP1294000 B1 EP 1294000B1 EP 02019976 A EP02019976 A EP 02019976A EP 1294000 B1 EP1294000 B1 EP 1294000B1
Authority
EP
European Patent Office
Prior art keywords
printed circuit
lamina
switch
snap
action
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
EP02019976.6A
Other languages
German (de)
English (en)
Other versions
EP1294000A2 (fr
EP1294000A3 (fr
Inventor
Marco Barile
Paolo Ballatore
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.)
Bitron SpA
Original Assignee
Bitron SpA
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 Bitron SpA filed Critical Bitron SpA
Publication of EP1294000A2 publication Critical patent/EP1294000A2/fr
Publication of EP1294000A3 publication Critical patent/EP1294000A3/fr
Application granted granted Critical
Publication of EP1294000B1 publication Critical patent/EP1294000B1/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
    • H01H23/003—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with more than one electrically distinguishable condition in one or both positions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • H01H2003/466—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle using a living hinge to connect the levers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H2021/225—Operating parts, e.g. handle with push-pull operation, e.g. which can be pivoted in both directions by pushing or pulling on the same extremity of the operating member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/006—Only mechanical function
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/018—Tumbler

Definitions

  • the present invention relates to an electrical double snap-action switch, for example for controlling car-window regulators or else other facilities present on a motor vehicle.
  • Embedded in pre-defined points within the silicone is electrically conductive material which enables closing of the contacts of the underlying printed circuit once the bubble has "snapped".
  • the switch of the prior art has, however, constructional features that increase the costs for its manufacture, both on account of the larger number of assembly operations, and on account of delicate and hence costly machining operations.
  • the contacts in the bubble are obtained from mixing carbon dusts with silicone or else are co-moulded with the silicone. In either cases, high-technology processes are involved.
  • the purpose of the present invention is to provide a snap-action switch which will be inexpensive and will overcome the aforesaid drawback.
  • number 1 designates as a whole the outer body of a switch, for example for controlling the motors of car-window regulators, formed by a cover or lid 2 and by a base 3 and provided with an oscillating control button 4 connected, in 5, to the lid 2.
  • the body 1 is fixed in position by being snapped on to a part of the passenger compartment of a motor vehicle (not illustrated).
  • the oscillating control button 4 can move between two positions for controlling, in the example illustrated, closing or opening of the car windows.
  • a lamina 10 Located on the base 3 of the body of the switch are the printed circuit 7 and the connectors 8 for its connection to the electrical system.
  • a lamina 10 Anchored on the printed circuit, which is provided with special fixing pins, is a lamina 10.
  • the lamina 10 is made of an elastic metal material, which is a conductor of electric current, and is made, starting from a plane metal strip, by means of a process of blanking and forming.
  • the lamina 10 (see Figures 1 and 2 ), which has a substantially rectangular profile, presents, on the shorter sides, two arched strips per side, with at least one support 2 at the ends of each strip, and at least one central indentation 13 for each support.
  • Each indentation 13 is formed in a position such as to be located, when the switch is assembled, at a point corresponding to one of the silicone bubbles 14 made out of a single elastic element 15, referred to as "mat" in the specific terminology of the technical sector, set in a position overlying the lamina 10.
  • the silicone bubbles have the function of providing the sensation of actuation of the switch. In particular, they follow a non-linear curve of the strength of the bubble versus the travel, the said curve rising up to the point where the bubble reaches an unstable geometrical condition, beyond which there occurs collapse with sudden reduction in the strength and consequent increase in the speed of motion of the system. In this way, the classic snap-action of the switch is obtained.
  • a second function of the silicone bubbles is to provide the compressive strength of the contact elements, in particular the contacts between the lamina 10 and the printed circuit 7, which is necessary for implementation of the electrical function of the switch.
  • the points of contact of the lamina 10 on the printed circuit 7 consist of a pad having a substantially circular shape 15a, with a hole 16 passing through the printed circuit, made at its centre. Both the pads and the holes of each point of contact are coated with electrically conductive material.
  • a pair of rigid bars 17 and 18, is set in a position overlying the mat, and each bar is supported on a pair of silicone bubbles on one and the same side of the mat so as to exert pressure on them as a result of the actuation of the oscillating control 4.
  • the action of said control is transmitted to the rigid bars by means of a pair of prods 19 and 20, each associated to a single bar, in a point that is not equidistant from the points of application of the reactions of the silicone bubbles on the rigid bars, so that the linear motion of the prods pushed downwards (with respect to Figure 1 ) wil be converted into a motion of rotation and translation of said rigid bars (see Figures 3a to 3c ).
  • the prods 19 and 20 are connected to the rigid bars 17 and 18 by hinges, which, in one of the possible embodiments, are represented by flexible elements in the form of S-shaped springs 22.
  • the switch according to the invention functions in the way described hereinafter, with particular reference to Figures 1 and 3a, 3b, 3c .
  • the making of the electrical contact by means of the indentation 13 on the supports 12, enables, at the moment of "snapping" of the silicone bubble, mutual sliding of the surfaces of contact between the lamina and the printed circuit, i.e., a relative movement between the two parts, which enables a self-cleaning effect of the surfaces involved to be obtained, with consequent longer duration of efficient operation of the switch.
  • the central through hole 16 moreover enables removal of any residual impurities that might result from the machining process or that may have been created during use from the surface of contact between the metal lamina and the printed circuit, the said contact being made on the edge and not on the flat surface.

Landscapes

  • Push-Button Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Relay Circuits (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (4)

  1. Interrupteur à double déclic permettant de commander des appareils électriques équipant un véhicule à moteur, comprenant un bouton de commande oscillant (4) et un corps de boîtier dans lequel se déplacent des contacts mobiles (12) conçus pour effectuer une course et atteindre soit une première position d'arrêt, avec la fermeture d'une première partie de contacts fixes d'un circuit imprimé, soit une seconde position d'arrêt, avec la fermeture d'une seconde partie de contacts fixes dudit circuit imprimé, lesdits contacts mobiles étant déplacés par un élément élastique à déclic composé d'un matériau en silicone (15), sur lequel agit une paire de barres rigides (17, 18), chaque barre étant commandée par une pointe (19, 20), chaque pointe agit sur la barre associée avec un désalignement, ce qui provoque l'encliquètement successif de la partie de l'élément élastique à déclic situé sous les extrémités desdites barres (17, 18) avec pour résultat, la fermeture desdits contacts fixes ;
    lesdits contacts mobiles (12) étant composés d'une lamelle métallique (10) placée entre l'élément à déclic composé d'un matériau de silicone et le circuit imprimé ;
    l'interrupteur étant caractérisé en ce que la lamelle métallique (10) présente un profil sensiblement rectangulaire et est munie, sur ses côtés les plus courts, de deux bandes arquées par côté, avec au moins un support (12) aux extrémités de chaque bande et au moins une encoche centrale (13) pour chaque support.
  2. Interrupteur selon la revendication 1, caractérisé en ce que des points de contact permettant de supporter la lamelle (10), constitués d'un patin ayant une forme sensiblement circulaire (15a), munis d'un trou traversant (16) dans le circuit imprimé, prévu dans son centre, sont prévus sur le circuit imprimé (7) en des points correspondants auxdites encoches (13).
  3. Interrupteur selon la revendication 2, caractérisé en ce que les points de contact et les orifices sont revêtus d'un matériau électriquement conducteur.
  4. Interrupteur selon les revendications 1 et 2, caractérisé en ce que le contact entre la lamelle (10) et le circuit imprimé (7) est assuré sur le bord des orifices (16).
EP02019976.6A 2001-09-14 2002-09-05 Un commutateur électrique à couches multiples et à double action brusque Expired - Lifetime EP1294000B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001TO000878A ITTO20010878A1 (it) 2001-09-14 2001-09-14 Interruttore elettrico a lamina a doppio scatto.
ITTO20010878 2001-09-14

Publications (3)

Publication Number Publication Date
EP1294000A2 EP1294000A2 (fr) 2003-03-19
EP1294000A3 EP1294000A3 (fr) 2005-02-09
EP1294000B1 true EP1294000B1 (fr) 2014-04-16

Family

ID=11459193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02019976.6A Expired - Lifetime EP1294000B1 (fr) 2001-09-14 2002-09-05 Un commutateur électrique à couches multiples et à double action brusque

Country Status (4)

Country Link
EP (1) EP1294000B1 (fr)
BR (1) BRPI0203967B1 (fr)
IT (1) ITTO20010878A1 (fr)
MX (1) MXPA02008948A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10341101B4 (de) * 2003-09-05 2006-10-12 Trw Automotive Electronics & Components Gmbh & Co. Kg Kippschalter
CN105931914B (zh) * 2016-06-30 2019-01-18 昌辉汽车电器（黄山）股份公司 一种用于汽车方向盘的开关结构
FR3137207A1 (fr) * 2022-06-22 2023-12-29 Dav Dispositif de commande à bascule à double actionnement dans un même sens avec retour haptique à double détente

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916135A (en) * 1974-07-03 1975-10-28 Hewlett Packard Co Keyboard type switch with rocker type key actuator
US4193181A (en) * 1976-12-06 1980-03-18 Texas Instruments Incorporated Method for mounting electrically conductive wires to a substrate
US5719361A (en) * 1996-08-09 1998-02-17 Packard Hughes Interconnect Company Mechanism for multiple dome dual detent
JP3526775B2 (ja) * 1999-03-11 2004-05-17 アルプス電気株式会社 プッシュスイッチ

Also Published As

Publication number Publication date
EP1294000A2 (fr) 2003-03-19
EP1294000A3 (fr) 2005-02-09
ITTO20010878A0 (it) 2001-09-14
MXPA02008948A (es) 2004-08-19
BR0203967A (pt) 2003-05-20
ITTO20010878A1 (it) 2003-03-14
BRPI0203967B1 (pt) 2016-10-25

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