WO1994019817A1 - Commutateur electrique a voyant lumineux - Google Patents

Commutateur electrique a voyant lumineux Download PDF

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Publication number
WO1994019817A1
WO1994019817A1 PCT/DE1994/000200 DE9400200W WO9419817A1 WO 1994019817 A1 WO1994019817 A1 WO 1994019817A1 DE 9400200 W DE9400200 W DE 9400200W WO 9419817 A1 WO9419817 A1 WO 9419817A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical switch
circuit board
switch according
light
reflector
Prior art date
Application number
PCT/DE1994/000200
Other languages
German (de)
English (en)
Inventor
Markus Leuschner
Original Assignee
Eaton Controls Gmbh & Co. Kg
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 Eaton Controls Gmbh & Co. Kg filed Critical Eaton Controls Gmbh & Co. Kg
Priority to EP94908263A priority Critical patent/EP0685108B1/fr
Priority to DE59403660T priority patent/DE59403660D1/de
Publication of WO1994019817A1 publication Critical patent/WO1994019817A1/fr

Links

Classifications

    • 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
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • 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
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • H01H2013/026—Light-emitting indicators with two or more independent lighting elements located inside the push button switch that illuminate separate zones of push buttons

Definitions

  • the invention relates to an electrical switch with light indicator, which has a spring-loaded PS switching element which can be actuated by a pushbutton, the switching contacts of which act on connecting contacts arranged in the base of the switch housing, the connecting contacts being connected to at least one lighting element facing the pushbutton.
  • switches have been known for a long time. It is important with these switches that they form a compact assembly, which contain contacts and light source integrated, can be assigned in a small space and, above all, are easy to assemble and ensure reliable operation over a long period of time with little effort.
  • a key with a light indicator for keyboards in office and remote typewriters is known, in which a side opening for a light-emitting diode is arranged on the front of the key button in the viewing area of an operator.
  • a circuit board is provided which contains the plug-in device and the power supply for the light-emitting diode and is blown into the button.
  • the power supply takes place via flexible power supply cables from a keyboard circuit board, for the implementation of which recesses are provided in the key base, the power supply cables being guided between the recesses and the circuit board in the form of a pivoted loop.
  • the two power supply cables require a relatively large installation space.
  • US-PS 34 67 802 shows a push button switch with an electrical connector between the movable push button provided with one or more indicator lamps and the housing with the associated
  • the connecting link here has the shape of a flat, flexible, non-conductive plastic strip with embedded electrically conductive strips, which sags in a controlled arc, which does not change its position, between the movable parts to be connected.
  • a flexible conductor foil is used in a movable actuator provided with lighting elements. The assembly effort is considerable.
  • the pushbutton arrangement comprises two printed circuit boards which are spaced apart from one another and which are electrically coupled to one another by electrical conductors of high mechanical strength, which simultaneously take on the function of mechanically supporting the two circuit boards to one another. Since the LEDs are thus fixed, an additional space is required for the required actuation area of the push button.
  • the invention has for its object to provide an electrical switch of the type mentioned that the contacts and light source in a compact assembly contains the push button, which is modular and easy to assemble and avoids the susceptibility to contact, even with frequent switch operations.
  • This object is achieved in that a circuit board with the preassembled lighting element is plugged onto the upper free end of the connection contacts.
  • the switch With this modular construction of the switch, it can be manufactured in a manner that is easy to assemble and reliable in its function, with the printed circuit board and light element forming a preassembled structural unit.
  • the switch is preferably equipped with functional lighting and search lighting.
  • the search lighting consists of an incandescent lamp and the functional lighting consists of an LED. Both lamps are located with their pins in the soldering eyes of the plated-through circuit board and form a preassembled solder. Assembly.
  • the circuit board also has plug contacts into which the externally accessible connection contacts of the plug protrude and ensure the secure electrical connection. Alternatively, it is also possible to omit the holes in the printed circuit board without the plug contacts and to plug the connection contacts into these.
  • a switching element Before plugging on the circuit board on the contacts, a switching element is guided over the contact holder, which is arranged in two end positions in the housing and has resilient contacts on opposite sides, which tap the contacts depending on the shift position of the switching element.
  • the contact On one side of the switching element, the contact consists of a contact roller lying transversely to the direction of displacement and on the other side te from a set of several contact springs.
  • Incandescent lamp in the further assembly sequence, a reflector is guided over each light source, which advantageously consists of a common molded part made of light-reflecting plastic.
  • the upper end of the electrical switch is a pushbutton, which covers the housing with its outer edge and which is positively connected to the switching element by means of several, evenly distributed locking clips and has translucent inserts on the cover side in the area of the incandescent lamp and LED underneath, so that the light can penetrate to the outside.
  • the circuit board has a resistor network on its side with the conductor tracks, which can be easily adapted to the respective application with a bridge.
  • This resistor network is preferably realized with SMD resistors that do not require any additional space.
  • the switch can be used for recognizable different functions. For example, the luminous color of the LED indicates a certain function.
  • the assembled printed circuit board is connected to the reflector by means of latching clips, so that the printed circuit board and reflector form a preassembled assembly.
  • Fig. 1 is an overall view of the switch with light indicator and with a longitudinal section through the upper part of the switch with push button and the pre-assembled circuit board with
  • Fig. 2 shows a longitudinal section through the switch
  • FIG. 1 shows a side view of FIG. 1
  • Fig. 3 is a partial section of the switch according to the
  • FIG. 4 is a side view IV of FIG. 3 with engagement of the switching element in the housing
  • Fig. 5 is an enlarged view of the pre-assembled
  • FIG. 6 is a plan view of the enlarged view of the circuit board according to view VI in Fig. 5,
  • FIG. 7 is an illustration of the circuit board with the plug contacts and the connections for LED and incandescent lamp according to view VII of FIG. 5,
  • FIG. 8 shows a representation of the printed circuit board according to FIG. 7 with a special resistance network in the printed circuit for various LEDs
  • Fig. 9 shows the connection of the reflector with the circuit board as a pre-assembled assembly
  • FIG. 10 is a plan view of the pre-assembled circuit board according to view X of FIG. 9,
  • Fig. 11 shows a detail of the locking connection between
  • the electrical switch shown in Fig. 1 and 2 with light indicator consists of the push button 1 with the translucent inserts 2 and 3, a housing 4 with the clamping brackets 5 arranged on the outside in a chassis for mounting the switch and a base 6, which has several latches 7 is attached to the housing 4.
  • a contact switch 8 with embedded connection contacts 9, the upper ends of which protrude into the plug contacts 10 of a printed circuit board 11.
  • a switching element 12 which can be displaced into two end positions and has spring contacts 13 opposite one another and a contact roller 14.
  • the contact roller 14 and the spring contacts 13 press on the contact holder 8 and, depending on the shift position of the switching element 12, establish the electrical connection for the switching function and also for the associated light source.
  • the switching element 12 is in permanent connection with the pushbutton 1 and is brought into the various desired positions against the action of the compression springs 15 and known switching means.
  • the printed circuit board 11 has an incandescent lamp 18 for the search lighting and a light-emitting diode 17 for the functional lighting.
  • the reflector 16 is placed on the printed circuit board 11 before the pushbutton 1 is installed and secured to the housing 4 by means of latching means.
  • the reflector 16 for the LED 17 and for the incandescent lamp 18 preferably consists of a common molded part made of a light-reflecting plastic.
  • the reflector 16 has a locking guide 20 which is formed in a wedge shape and which interacts with the resilient locking clips 21 formed on the housing 4.
  • locking lugs 22 can be seen, which are resiliently fastened to the switching element 12 and are preferably integrally formed for a positive connection with the pushbutton 1.
  • the switching element 12 has two lateral pins 24 which are guided in elongated holes 23 by tabs 25 attached to the housing 4.
  • FIGS. 5 and 6 Details of the printed circuit board are shown in FIGS. 5 and 6.
  • the lamp connections 26 of the incandescent lamp 18 and the LED 17 are connected to the printed circuit board 11, preferably by soldering in solder eyes, and thus form a preassembled assembly.
  • the plug contacts 10 take up the connecting contacts 9 and secure them electrical continuity.
  • the line diagram shown in Fig. 7 shows the enlarged circuit board from the bottom with the pads 26 for the connection of the LED and the pads 27 for the connection of the incandescent lamp 18.
  • the LED is connected upstream of a resistor 28, which is preferably a SMD-Wi resistor .
  • the series resistor 28 is a resistor network with a plurality of connection points 29 for an electrical bridge 30.
  • FIGS. 9 to 11 shows a mounting of the reflector 16 on the printed circuit board 11 as a preassembled assembly.
  • the reflector 16 has additional latching clips 31 which snap into a recess 32 in the printed circuit board 11.

Landscapes

  • Push-Button Switches (AREA)

Abstract

Un commutateur électrique à voyant lumineux comprend un organe commutateur (12) sollicité par un ressort et actionnable par un bouton-poussoir (1). L'organe commutateur (12) coopère avec des contacts de raccordement (9) qui mènent à l'extérieur du commutateur électrique. Le commutateur électrique comprend au moins un élément lumineux en face du bouton-poussoir (1). Une plaquette de circuits imprimés (11), sur laquelle est prémonté l'élément lumineux (17, 18), est enfichée sur l'extrémité supérieure libre des contacts de raccordement (9). Une diode luminescente (17) est montée sur la plaquette de circuits imprimés (11) pour assurer la fonction d'éclairage et une lampe à incandescence (18) sert d'éclairage de repérage. Le bouton-poussoir (1) du commutateur comprend des insertions transparentes (2 et 3) dans la zone des éléments lumineux.
PCT/DE1994/000200 1993-02-20 1994-02-19 Commutateur electrique a voyant lumineux WO1994019817A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP94908263A EP0685108B1 (fr) 1993-02-20 1994-02-19 Commutateur electrique a voyant lumineux
DE59403660T DE59403660D1 (de) 1993-02-20 1994-02-19 Elektrischer schalter mit leuchtanzeige

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4305349.1 1993-02-20
DE4305349A DE4305349A1 (de) 1993-02-20 1993-02-20 Elektrischer Schalter mit Leuchtanzeige

Publications (1)

Publication Number Publication Date
WO1994019817A1 true WO1994019817A1 (fr) 1994-09-01

Family

ID=6481010

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1994/000200 WO1994019817A1 (fr) 1993-02-20 1994-02-19 Commutateur electrique a voyant lumineux

Country Status (3)

Country Link
EP (1) EP0685108B1 (fr)
DE (2) DE4305349A1 (fr)
WO (1) WO1994019817A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410771B4 (de) * 1994-03-28 2006-08-24 Trw Automotive Electronics & Components Gmbh & Co. Kg Schalter, insbesondere in die Armaturentafel eines Kraftfahrzeuges einbaubarer Schalter, sowie Verfahren zum Herstellen eines Schalters
DE19520243A1 (de) * 1995-06-02 1996-12-05 Abb Patent Gmbh Elektrischer Tastschalter
EP2045656A1 (fr) 2007-10-01 2009-04-08 Siemens Aktiengesellschaft Commutateur doté d'un affichage étendu

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191871A (en) * 1978-09-12 1980-03-04 Westinghouse Electric Corp. Push-button assembly
DE3014490A1 (de) * 1980-04-16 1981-10-22 SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen Elektrischer schalter mit such- und/oder funktionsbeleuchtung
DE3131832A1 (de) * 1981-08-12 1983-03-03 SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen Elektrischer schalter
US4683359A (en) * 1986-03-13 1987-07-28 Eaton Corporation Illuminated switch assembly with combined light and light shield
GB2242572A (en) * 1990-03-30 1991-10-02 Barcrest Ltd Switch assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191871A (en) * 1978-09-12 1980-03-04 Westinghouse Electric Corp. Push-button assembly
DE3014490A1 (de) * 1980-04-16 1981-10-22 SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen Elektrischer schalter mit such- und/oder funktionsbeleuchtung
DE3131832A1 (de) * 1981-08-12 1983-03-03 SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen Elektrischer schalter
US4683359A (en) * 1986-03-13 1987-07-28 Eaton Corporation Illuminated switch assembly with combined light and light shield
GB2242572A (en) * 1990-03-30 1991-10-02 Barcrest Ltd Switch assembly

Also Published As

Publication number Publication date
EP0685108A1 (fr) 1995-12-06
DE59403660D1 (de) 1997-09-11
EP0685108B1 (fr) 1997-08-06
DE4305349A1 (de) 1994-08-25

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