EP0028000B1 - Interrupteur à bouton-poussoir - Google Patents

Interrupteur à bouton-poussoir Download PDF

Info

Publication number
EP0028000B1
EP0028000B1 EP19800106423 EP80106423A EP0028000B1 EP 0028000 B1 EP0028000 B1 EP 0028000B1 EP 19800106423 EP19800106423 EP 19800106423 EP 80106423 A EP80106423 A EP 80106423A EP 0028000 B1 EP0028000 B1 EP 0028000B1
Authority
EP
European Patent Office
Prior art keywords
push
button
housing
actuating body
switching element
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
Application number
EP19800106423
Other languages
German (de)
English (en)
Other versions
EP0028000A1 (fr
Inventor
Jaroslav Keprda
Eugéne Dellaert
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0028000A1 publication Critical patent/EP0028000A1/fr
Application granted granted Critical
Publication of EP0028000B1 publication Critical patent/EP0028000B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H01H15/10—Operating parts
    • H01H15/102—Operating parts comprising cam devices
    • 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
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0271—Bases, casings, or covers structurally combining a switch and an electronic component

Definitions

  • the invention relates to a pushbutton with a rectilinear in a key housing against the force of a spring element from a key base distant to a key base near position and thereby movable between housing-side actuators and with two leaf spring-like switching elements fixed on one side in the housing with cross pieces, arranged parallel to the key path are and with their free end facing away from the key base, depending on the respective position of the actuating body, are resiliently supported either on a connecting element assigned to the respective switching element and led out of the housing, or on the actuating body or a cam of the actuating body, the connecting elements in the button housing are fixed.
  • each switching element forms a key contact together with the associated connection element, both of which are provided with connections protruding from the key housing, the one key contact e.g. one work contact and the other key contact is a normally closed contact.
  • the actuator body moves, one contact is closed and the other contact is opened. If only one contact is required, the other contact must be left unconnected.
  • keys with only one key contact are required for the construction of keyboards and the like in very large numbers. These keys are soldered side by side in grid holes in a printed circuit board, whereby no solder vapors are allowed to penetrate into the interior of the key housing. It is therefore desirable, particularly in the case of a key with only one contact, to have a key housing that is as tight as possible with respect to the connections and that the key can be manufactured in an uncomplicated manner, without making the function of the key particularly difficult.
  • this object is achieved in that, in the pushbutton of the type mentioned at the outset, the two switching elements are connected to one another via their cross pieces which are designed to be separable from one another.
  • connection elements e.g. can be designed as pins that can be easily anchored in a base plate of the push button so that they are surrounded by the plastic mass of the base plate in the penetration area, the base plate of the push button can be made completely tight.
  • the movable contacts (switching elements) of the pushbutton can be produced independently of the connection elements and are never permanently connected to them, which considerably simplifies their manufacture and their installation in the key housing.
  • each switching element consists of a U-leg of a U-shaped bent spring plate and that the counter leg is provided with the cross piece
  • the button housing consists of an upper part and a housing base plate, and that the cross pieces by locking them Both parts can be clamped together in the housing
  • the leaf-shaped cross pieces are provided with triangular projections at least on their edge facing the housing upper part
  • the actuating body has a cam for each switching element, and that these cams are provided either with a synchronous or mutually displaced effect are that one of the cams is designed such that only a protrusion protruding from the cam acts on the switching element, and that finally the switching elements are arranged only on one side of the actuating body in the button housing, and that on the other side of the actuator supply body in the key housing recesses for the exception of electrical light sources and / or other electrical components are provided.
  • an actuating body 3 is arranged in a button housing consisting of a housing base plate 1 and an upper housing part 2.
  • the actuating body 3 is mounted with a central guide pin 4 in a cylindrical recess 5 of the housing base plate 1 such that it extends in a straight line between a position remote from the key base (as shown in FIG. 1) and a position close to the key base. and can be moved around.
  • the actuator body 3 is supported with stops 7 (FIG. 5) on the upper housing part 2.
  • two leaf spring-like switching elements 8 are arranged in the key housing 1, 2.
  • the switching elements 8 are each formed by one leg of a U-shaped bent spring plate 9 (FIG. 2), the free end 19 of the switching element 8 being located on the side of the switching element 8 that is remote from the key base.
  • Each counter leg of a switching element 8 has a cross piece 10 (FIG. 3), which is clamped in the recess 11 (FIG. 1) of the button housing when connecting the housing base plate 1 and the upper housing part 2 and thereby fixes the assigned switching element 8 in the correct position in the housing.
  • Triangular projections 13 provided on the upper edge 12 of the cross pieces 10 dig into the plastic mass of the upper housing part 2 and ensure a vibration-proof attachment of the switching elements 8.
  • the two switching elements 8 of a button are connected via a detachable section 14 of their associated cross pieces 10 (FIG. 3).
  • a connection element 15 which can be separated from the cross piece is provided on each cross piece 10 of a switching element 8 (FIG. 3).
  • the housing base plate 1 has chimney-like channels 29 (FIG. 1) which, starting from the recess 11, extend to the side of the housing base plate 1 facing away from the housing upper part 2 and are directed parallel to the recess 5. They serve to receive a central section 17 of the connection elements 15.
  • pin-shaped connecting elements 18 are fixed in the housing base plate 1 as fixed contacts of the button and arranged such that the free end 19 of the switching elements 8, which is provided with an arcuate offset 28 to form a clear contact point, always when the actuating body 3 does not act on the respective switching element 8, a section of one of the connecting elements 18 projecting into the housing interior rests resiliently.
  • each switching element 8 is dimensioned such that, in addition to an area of the switching element 8 shaded by the connecting element 18, there is an area of the switching element which extends parallel thereto and in which cams 20 provided on the actuating body 3 can act on the switching element.
  • a cam 20 cf. 4 in particular can be achieved that e.g. during the movement of the actuating body 3, only a hump 21 placed on the cam causes the crank 28 of the switching element 8 to be briefly lifted off the connecting element 18.
  • Such a function is e.g. Desired if only a slight frictional movement between the switching element 8 and the crank 28 for contact cleaning is to be effected in order to ensure reliable contact between these two parts. This is e.g.
  • connection element 18 the circuit to be influenced by the button runs from the one connecting element 18 via a switching element 8, its counter leg 16, the two cross pieces 10 connected to one another, to the counter leg 16 of the other switching element 8 and from there to the other connecting element 18 either in the position of the actuating body 3 remote from the base of the key or close to the base of the base, lifted by the cam 20 from the associated connection element 18, the key thus acts either as a work contact or as a normally closed contact.
  • the connection elements 15 of the cross pieces 10 are not required.
  • the key works e.g. as a changeover switch when the cross pieces 10 are connected to one another and at least one of the two detachable connection elements 15 is used, or with two working contacts if the cross pieces 10 are separated and both detachable connection elements 15 are used.
  • the hump 21 can also with a cam 20a, 20b or 20c can be used to generate a kind of rest (cf. FIG. 1) when moving the actuating body 3 from its position remote from the key base to its position close to the key base. This latching effect is caused by the additional deflection of the switching element 8 caused by the hump 21.
  • the special design of the switching elements 8 used for the key makes it possible to use the key space on one side of the actuating body 3 for accommodating light-emitting diodes 22 and a diode 23.
  • the components mentioned are used in correspondingly shaped recesses in the housing base plate 1 and in these by correspondingly shaped e.g. Lugs 24 of the upper housing part 2 locked when the housing base plate 1 and the upper housing part 2 are joined together.
  • two centering pins 30 are provided which are connected in one piece to the housing base plate 1 and protrude into the printed circuit board.
  • One of the pins is oval to compensate for tolerances, the other is provided on its circumference with three or more triangular projections 31; these approaches are dimensioned such that they dig into the edge of the holes in the printed circuit board provided for the centering pins 30 when the buttons are placed on the printed circuit board, thereby causing the button to jam on the printed circuit board.
  • the button is held in its original position on the PCB during further processing steps (floating up during wave soldering due to the resulting pressure of the flux vapors and the surge is prevented without complex additional measures - such as holding devices).

Landscapes

  • Push-Button Switches (AREA)

Claims (7)

1. Bouton-poussoir qui comprend un corps d'actionnement (3) qui peut être déplacé rectilignement dans un boîtier de bouton-poussoir (1,2), à l'encontre de la force d'un élément à ressorts (6), d'une position éloignée de la base du bouton-poussoir dans une position proche de la base du bouton-poussoir et, ce faisant, entre des butées prévues du côté du boîtier, ainsi que deux éléments de commutation (8), du type de ressorts à lames, qui sont fixés d'un côté dans le boîtier à l'aide de pièces transversales (10) et qui sont disposés parallèlement au trajet du bouton-poussoir et dont l'extrémité libre, opposé à la base du bouton-poussoir, s'appuie élastiquement soit sur un élément de raccordement (18) qui sort du boîtier de bouton-poussoir (1,2) et est associé à l'élément de commutation respectif (8), soit sur le corps d'actionnement (3) ou sur une came (20) du corps d'actionnement (3), et fonction de la position respective du corps d'actionnement (3), les éléments de raccordement (18) étant fixés dans le boîtier de bouton-poussoir (1,2), caractérisé par le fait que les deux éléments de commutation (8) sont réunis par l'intermédiaire de leurs pièces transversales (10) agencées de manière à pouvoir être séparées l'une de l'autre.
2. Bouton-poussoir selon la revendication 1, caractérisé par le fait que chaque élément de commutation (8) est constitué par une branche de U d'une tôle élastique (9) repliée en forme de U, et que la branche antagoniste (16) est munie de la pièce transversale (10).
3. Bouton-poussoir selon la revendication 2, caractérisé par le fait que le boîtier de bouton-poussoir (1,2) est constitué par une partie supérieure (2) et une plaque de base (1) de boîtier, et que les pièces transversales (10) sont serrées l'une avec l'autre dans le boîtier par encliquetage de ces deux parties.
4. Bouton-poussoir selon la revendication 3, caractérisé par le fait que les pièces transversales (10) en forme de lames sont munies d'ergots triangulaires (13), au moins sur leur bord tourné vers la partie supérieure de boîtier.
5. Bouton-poussoir selon l'une des revendications précédentes, caractérisé par le fait que le corps d'actionnement (3) comporte respectivement une came (20) pour chaque élément de commutation (8), et que ces cames fonctionnent soit en synchronisme soit de façon décalée l'une par rapport à l'autre.
6. Bouton-poussoir selon la revendication 5, caractérisé par le fait qu'une des cames est agencée de manière que seule une bosse (21) s'écartant de la came (20) agissesurl'élémentdecommutation (8).
7. Bouton-poussoir selon l'une des revendications précédentes, caractérisé par le fait que les éléments de commutation (8) sont disposés dans le boîtier de bouton-poussoir (1,2) uniquement d'un côté du corps d'actionnement (3), et que de l'autre côté du corps d'actionnement (3) sont prévues dans le boîtier du bouton-poussoir (1,2) des évidements pour recevoir des sources lumineuses électriques (22) et/ou d'autres composants électriques (23).
EP19800106423 1979-10-30 1980-10-21 Interrupteur à bouton-poussoir Expired EP0028000B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2943855 1979-10-30
DE19792943855 DE2943855C2 (de) 1979-10-30 1979-10-30 Drucktaste

Publications (2)

Publication Number Publication Date
EP0028000A1 EP0028000A1 (fr) 1981-05-06
EP0028000B1 true EP0028000B1 (fr) 1983-04-27

Family

ID=6084756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800106423 Expired EP0028000B1 (fr) 1979-10-30 1980-10-21 Interrupteur à bouton-poussoir

Country Status (2)

Country Link
EP (1) EP0028000B1 (fr)
DE (1) DE2943855C2 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3373990D1 (en) * 1982-04-15 1987-11-12 Standard Telephon & Radio Ag Key element
DE3229465A1 (de) * 1982-08-06 1984-02-09 Cherry Mikroschalter Gmbh, 8572 Auerbach Tastenschalter
DE8411745U1 (de) * 1984-04-13 1986-02-06 Siemens AG, 1000 Berlin und 8000 München Drucktaste
ATE33908T1 (de) * 1984-05-15 1988-05-15 Siemens Ag Vorrichtung zur befestigung einer diode in einem tastengehaeuse.
FR2613119A1 (fr) * 1987-03-27 1988-09-30 Jaeger Contacteur electrique de position
DE3713775C2 (de) * 1987-04-24 1996-02-08 Cherry Mikroschalter Gmbh Tastenschalter
JPH073547Y2 (ja) * 1988-07-25 1995-01-30 アルプス電気株式会社 押釦スイツチ
WO1993010546A1 (fr) * 1991-11-21 1993-05-27 Cherry Mikroschalter Gmbh Touche plate
FR2781919B1 (fr) * 1998-07-31 2000-09-01 Itt Mfg Enterprises Inc Interrupteur electrique, du type normalement ferme
FR2785443B1 (fr) * 1998-11-03 2001-01-19 Sc2N Sa Contacteur electromecanique a fiches multiples
FR2818793B1 (fr) * 2000-12-22 2003-08-08 Giat Ind Sa Capteur securitaire de mouvement
WO2017174074A1 (fr) * 2016-04-07 2017-10-12 Cherry Gmbh Coulisseau pour touche d'un clavier et touche pour clavier
DE102017106283A1 (de) * 2017-03-23 2018-09-27 Cherry Gmbh Tastenmodul für eine Tastatur und Verfahren zum Herstellen eines Tastenmoduls für eine Tastatur

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051516B (de) * 1955-04-27 1959-02-26 Duisburger Kupferhuette Verfahren zur Gewinnung von Zink
US3109071A (en) * 1959-12-18 1963-10-29 Bell Telephone Labor Inc Telephone call transmitter
US3163740A (en) * 1962-03-19 1964-12-29 Patent License Corp Push-button switch assembly
GB1139756A (en) * 1965-04-28 1969-01-15 Ericsson Telefon Ab L M Electric contact mechanism
US3708635A (en) * 1971-06-17 1973-01-02 Oak Electro Netics Corp Multiple switch assembly with improved reciprocating leaf spring contact cam actuator
US3715545A (en) * 1971-06-18 1973-02-06 Cherry Electrical Prod Momentary push button switch with improved non-conductive cam for normally retaining movable leaf spring contacts in a non-operative position
DE2140212B2 (de) * 1971-08-11 1974-11-28 Swf-Spezialfabrik Fuer Autozubehoer Gustav Rau Gmbh, 7120 Bietigheim Drucktastenschalter, insbesondere für Kraftfahrzeuge
DE2256279B2 (de) * 1972-11-16 1974-12-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektrischer Schalter
US4004121A (en) * 1974-04-04 1977-01-18 Mechanical Enterprises, Inc. Electrical switch with wire beam spring contact closer
SE402654B (sv) * 1976-12-21 1978-07-10 Ericsson Telefon Ab L M Tryckknappsomkopplare for anvendning vid pa ett kretskort anordnade stromkretsar

Also Published As

Publication number Publication date
DE2943855C2 (de) 1982-10-21
EP0028000A1 (fr) 1981-05-06
DE2943855A1 (de) 1981-05-14

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