EP1701368B1 - Switching pad for an electric switch - Google Patents

Switching pad for an electric switch Download PDF

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Publication number
EP1701368B1
EP1701368B1 EP05005330A EP05005330A EP1701368B1 EP 1701368 B1 EP1701368 B1 EP 1701368B1 EP 05005330 A EP05005330 A EP 05005330A EP 05005330 A EP05005330 A EP 05005330A EP 1701368 B1 EP1701368 B1 EP 1701368B1
Authority
EP
European Patent Office
Prior art keywords
sensor mat
switch according
actuating element
light
switching
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.)
Revoked
Application number
EP05005330A
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German (de)
French (fr)
Other versions
EP1701368A1 (en
Inventor
Friedhelm Lotz
Ingo Petzhold
Anja Martens
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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
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Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to DE502005007313T priority Critical patent/DE502005007313D1/en
Priority to EP05005330A priority patent/EP1701368B1/en
Priority to US11/369,250 priority patent/US20060219539A1/en
Publication of EP1701368A1 publication Critical patent/EP1701368A1/en
Application granted granted Critical
Publication of EP1701368B1 publication Critical patent/EP1701368B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H13/70—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
    • H01H13/704—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 the layers, e.g. by their material or structure
    • 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
    • H01H13/83—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 characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/068—Properties of the membrane
    • H01H2209/074—Properties of the membrane elastomeric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/068—Properties of the membrane
    • H01H2209/082—Properties of the membrane transparent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/05—Key offset in relation to switch site
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/064—Optical isolation of switch sites

Definitions

  • the invention relates to an electrical switch having a switching mat and a backlit actuating element mounted in a housing for acting on switching contacts according to the preamble of claim 1
  • an actuating element of an electrical switch a safety mat with recorded in Domen contacts for acting on fixed contacts, for example, a corresponding circuit board assigned to the backlighting of the usually a symbol having actuator, the circuit board carries light bulbs, z. B. LEDs, whose light radiates from a transparent or slightly hazy and elastic material made of switching mat. It proves to be problematic that light emitted by the light source as stray light often adversely affects the desired appearance of the switch, the stray light often being visible to a user through a gap between the actuator and a housing supporting the actuator, and thus the visual appearance the switch is unfavorable.
  • the DE 196 41 786 A1 shows a switching mat with individual switching elements, via which a contact is made to a circuit board.
  • the switching elements have cavities into which light is coupled, wherein key surfaces of the switching mat made of an opaque material are translucent. Due to the opacity of the material of the switching mat, the leakage of stray light to a design surface is avoided.
  • the keypad is first painted and then the paint is removed in the key area by means of a laser, which is associated with considerable costs. Furthermore, it is necessary, in particular for stylistic reasons, to arrange a rigid actuating element above the switching mat.
  • a switchboard with pressure switches and an unbreakable membrane is known, which is particularly opaque to light.
  • the membrane sealingly spans the panel and has domes into which LEDs protrude.
  • the switching mat In order to favor a targeted transmission of the switching mat, preferably has to be screened through the wall of the switching mat on the other walls reduced thickness.
  • the switching mat on at least one dome for receiving a switching contact, which is associated with at least one fixed contact.
  • the dome due to its design enables a tactile detection of the switching.
  • the fixed contact is formed on a printed circuit board or by a stamped grid of the switch.
  • a light source within the housing of the switch preferably carries the printed circuit board or the lead frame a light emitting element, in particular an LED.
  • the actuator is translucent in a symbol area.
  • the actuating element is designed as a button and acted upon with a peripheral edge at its free, the switching mat associated end of the dome of the switching mat.
  • the arrangement of additional switching elements for actuating the dome is avoided.
  • the bottom-mounted switching mat on at least one light-emitting element spanning bulge, which projects into the actuating element.
  • the switching mat can be arranged for example on the circuit board or a socket of the housing. The light emitted by the light source penetrates the bulge and enters a region between the switching mat and the actuator to backlight its symbol.
  • the switching mat is made of a silicone.
  • the silicone is relatively easy to color and process and has the required flexibility or elasticity.
  • FIG. 1 shows a sectional view of an electrical switch with a switching mat according to the invention.
  • the switch 1 comprises a housing 2 in which two actuating elements 4 designed as buttons 3 are mounted, each with a translucent symbol 5 on the upper side.
  • the keys 3 have a peripheral edge 6, are arranged under each equipped with a switching contact dome 7 of a switching mat 8.
  • the edge side of a circuit board 9 cross-switching mat 8 made of silicone has protrusions 10 which protrude into the associated key 3. In the bulges 10 are electrically connected to the circuit board 9 lighting elements 11 for backlighting the symbols 5 of the made of an opaque material key.
  • the silicone of the switching mat 8 is dyed with black color pigments whose weight fraction is about 0.1%.

Landscapes

  • Push-Button Switches (AREA)

Description

Die Erfindung bezieht sich auf einen elektrischen Schalter mit einer Schaltmatte und einem in einem Gehäuse gelagerten hinterleuchteten Betätigungselement zur Beaufschlagung von Schaltkontakten nach dem Oberbegriff des Anspruchs 1The invention relates to an electrical switch having a switching mat and a backlit actuating element mounted in a housing for acting on switching contacts according to the preamble of claim 1

Ein derartiger elektrischer Schalter ist aus der US 6 299 320 B1 bekannt.Such an electrical switch is from the US Pat. No. 6,299,320 B1 known.

Aus der Praxis ist es bekannt, einem Betätigungselement eines elektrischen Schalters eine Schaltmatte mit in Domen aufgenommenen Kontakten zur Beaufschlagung von Festkontakten, beispielsweise einer entsprechenden Leiterplatte, zuzuordnen Zur Hinterleuchtung des in der Regel ein Symbol aufweisenden Betätigungselementes trägt die Leiterplatte Leuchtmittel, z. B. LEDs, deren Licht die aus einem transparenten oder leicht trüben und elastischen Werkstoff gefertigte Schaltmatte durchstrahlt. Als problematisch erweist es sich, dass von dem Leuchtmittel emittiertes Licht als Streulicht oftmals das gewünschte Erscheinungsbild des Schalters negativ beeinträchtigt, wobei das Streulicht häufig durch einen zwischen dem Betätigungselement und einem das Betätigungselement lagernden Gehäuse vorhandenen Spalt für einen Benutzer sichtbar ist und demnach das optische Erscheinungsbild des Schalters ungünstig ist.From practice, it is known, an actuating element of an electrical switch, a safety mat with recorded in Domen contacts for acting on fixed contacts, for example, a corresponding circuit board assigned to the backlighting of the usually a symbol having actuator, the circuit board carries light bulbs, z. B. LEDs, whose light radiates from a transparent or slightly hazy and elastic material made of switching mat. It proves to be problematic that light emitted by the light source as stray light often adversely affects the desired appearance of the switch, the stray light often being visible to a user through a gap between the actuator and a housing supporting the actuator, and thus the visual appearance the switch is unfavorable.

Die DE 196 41 786 A1 zeigt eine Schaltmatte mit einzelnen Schaltelementen, über die ein Kontakt zu einer Leiterplatte hergestellt wird. Die Schaltelemente weisen Hohlräume auf, in die Licht eingekoppelt wird, wobei Tastenflächen der aus einem lichtundurchlässigen Material gefertigten Schaltmatte lichtdurchlässig sind. Aufgrund der Lichtundurchlässigkeit des Materials der Schaltmatte ist der Austritt von Streulicht zu einer Designoberfläche vermieden. Um die Lichtundurchlässigkeit des Materials der Schaltmatte bei gleichzeitig lichtdurchlässiger Tastenfläche zu gewährleisten, wird die Schaltmatte zunächst lackiert und anschließend wird der Lack im Bereich der Tastenfläche mittels eines Lasers abgetragen, was mit erheblichen Kosten verbunden ist. Des Weiteren ist es, insbesondere aus stilistischen Gründen, erforderlich, ein starres Betätigungselement oberhalb der Schaltmatte anzuordnen.The DE 196 41 786 A1 shows a switching mat with individual switching elements, via which a contact is made to a circuit board. The switching elements have cavities into which light is coupled, wherein key surfaces of the switching mat made of an opaque material are translucent. Due to the opacity of the material of the switching mat, the leakage of stray light to a design surface is avoided. In order to ensure the opacity of the material of the switching mat while translucent key surface, the keypad is first painted and then the paint is removed in the key area by means of a laser, which is associated with considerable costs. Furthermore, it is necessary, in particular for stylistic reasons, to arrange a rigid actuating element above the switching mat.

Im Weiteren zeigt die US-A-5 491 313 ein elastomeres Tastenfeld mit beleuchtbaren Domen, die durch das von einem Lichtleiter ausgestrahlten Licht beleuchtet werden, wobei das Tastenfeld eine Leiterplatte überspannt und in den Domen Leiterbahnen zugeordnete Schaltkontakte zugeordnet sind.In the following shows the US-A-5,491,313 an elastomeric keypad with illuminable domes, which are illuminated by the light emitted by a light guide light, wherein the keypad spans a circuit board and assigned in the domes conductor tracks associated switch contacts.

Darüber hinaus ist aus der EP 0 920 039 A2 eine Schalttafel mit Druckschaltern und einer unzerbrechlichen Membrane bekannt, die insbesondere opak für Licht ist. Die Membrane überspannt abdichtend die Schalttafel und weist Dome auf, in die LED's ragen.In addition, from the EP 0 920 039 A2 a switchboard with pressure switches and an unbreakable membrane is known, which is particularly opaque to light. The membrane sealingly spans the panel and has domes into which LEDs protrude.

Ferner beschreibt die US-A-5 739 486 eine Schaltmatte für einen elektrischen Schalter mit einem in einem Gehäuse gelagerten Betätigungselement zur Beaufschlagung von Schaltkontakten, wobei mindestens einer der Schaltkontakte der Schaltmatte zugeordnet ist.Furthermore, the describes US-A-5,739,486 a safety mat for an electrical switch with a mounted in a housing actuating element for acting on switching contacts, wherein at least one of the switching contacts of the switching mat is assigned.

Es ist Aufgabe der Erfindung, einen Schalter der eingangs genannten Art zu schaffen, der kostengünstig zu fertigen ist und dessen optisches Erscheinungsbild nicht negativ durch austretendes Streulicht beeinflusst ist.It is an object of the invention to provide a switch of the type mentioned, which is inexpensive to manufacture and its visual appearance is not adversely affected by leaking scattered light.

Erfindungsgemäß wird die Aufgabe durch die Merkmale des Anspruchs 1 gelöst.According to the invention the object is achieved by the features of claim 1.

Aufgrund dieser Maßnahme ist es nicht erforderlich, das Betätigungselement oder die Schaltmatte, wie aus dem Stand der Technik bekannt, mehreren Arbeitschritten, nämlich dem Lackiereh und dem anschließenden Lasern, zu unterwerfen, um zum einen die Hinterleuchtung eines Symbols zu gewährleisten und zum anderen ein unerwünschtes Austreten von Streulicht zu vermeiden. Überraschender Weise stellte sich heraus, dass bei einer definierten dunklen Einfärbung der Schaltmatte, die von einem Fachmann mittels weniger Vergleichsversuche zu ermitteln ist, eine Transluszenz zu erzielen ist, die gleichzeitig eine Absorbtion innerhalb des Gehäuses reflektierter Lichtstrahlen, beispielsweise von unkontrolliert aus dem Schalter austretendem Streulicht, bewirkt und dennoch einen Lichtaustritt zur Hinterleuchtung des Betätigungselementes sicherstellt. Gleichzeitig ist eine gezielte Einstellung der Lichtdämpfung, also der Helligkeit, bei einer gegebenen Lichtquelle möglich. Mit dem geringen Gewichtsanteil des Farbstoffes oder der Farbpigmente am Gesamtbauteilgewicht werden die erforderlichen Effekte erzielt.Due to this measure, it is not necessary to subject the actuating element or the switching mat, as known from the prior art, several working steps, namely the Lackiereh and the subsequent lasers, on the one hand to ensure the backlighting of a symbol and on the other an undesirable Avoid leakage of stray light. Surprisingly, it has been found that in the case of a defined dark coloration of the switching mat, which is to be determined by a person skilled in the art by means of a few comparative tests, a translucency is achieved which simultaneously absorbs light rays reflected inside the housing, for example stray light emerging from the switch in an uncontrolled manner , causes and yet ensures a light leakage to the backlighting of the actuator. At the same time, a targeted adjustment of the light attenuation, ie the brightness, is possible for a given light source. With the small proportion by weight of the dye or the color pigments in the total component weight, the achieved necessary effects.

Um ein gezielte Durchstrahlung der Schaltmatte zu begünstigen, weist vorzugsweise die zu durchleuchtende Wandung der Schaltmatte eine gegenüber den übrigen Wandungen reduzierte Dicke auf.In order to favor a targeted transmission of the switching mat, preferably has to be screened through the wall of the switching mat on the other walls reduced thickness.

Zweckmäßigerweise weist die Schaltmatte mindestens einen Dom zur Aufnahme eines Schaltkontaktes auf, dem wenigstens ein Festkontakt zugeordnet ist. Bei einer Beaufschlagung des Doms mittels des Betätigungselementes knickt dieser ein und es wird ein entsprechender Schaltkreis geschlossen, wobei der Dom aufgrund seiner Gestaltung ein taktiles Erfassen des Schaltens ermöglicht. Bevorzugt ist der Festkontakt auf einer Leiterplatte oder durch ein Stanzgitter des Schalters ausgebildet.Conveniently, the switching mat on at least one dome for receiving a switching contact, which is associated with at least one fixed contact. At an admission of the cathedral by means of the actuating element, this buckles and it is closed a corresponding circuit, the dome due to its design enables a tactile detection of the switching. Preferably, the fixed contact is formed on a printed circuit board or by a stamped grid of the switch.

Zur kostengünstigen Anordnung einer Lichtquelle innerhalb des Gehäuses des Schalters trägt vorzugsweise die Leiterplatte bzw. das Stanzgitter ein Leuchtelement, insbesondere eine LED.For cost-effective arrangement of a light source within the housing of the switch preferably carries the printed circuit board or the lead frame a light emitting element, in particular an LED.

Bevorzugt ist das Betätigungselement in einem Symbolbereich lichtdurchlässig. Nach einer Weiterbildung ist das Betätigungselement als Taste ausgebildet und beaufschlagt mit einem umfangsseitigen Rand an seinem freien, der Schaltmatte zugeordneten Ende den Dom der Schaltmatte. Damit ist die Anordnung zusätzlicher Schaltelemente zur Betätigung des Domes vermieden.Preferably, the actuator is translucent in a symbol area. According to a development, the actuating element is designed as a button and acted upon with a peripheral edge at its free, the switching mat associated end of the dome of the switching mat. Thus, the arrangement of additional switching elements for actuating the dome is avoided.

Nach einer weiteren Ausgestaltung weist die bodenseitig befestigte Schaltmatte mindestens eine das Leuchtelement überspannende Ausbuchtung auf, die in das Betätigungselement ragt. Die Schaltmatte kann beispielsweise auf der Leiterplatte oder einem Sockel des Gehäuses angeordnet werden. Das von der Lichtquelle ausgesandte Licht durchdringt die Ausbuchtung und gelangt in einen Bereicht zwischen der Schaltmatte und dem Betätigungselement, um dessen Symbol zu hinterleuchten.According to a further embodiment, the bottom-mounted switching mat on at least one light-emitting element spanning bulge, which projects into the actuating element. The switching mat can be arranged for example on the circuit board or a socket of the housing. The light emitted by the light source penetrates the bulge and enters a region between the switching mat and the actuator to backlight its symbol.

Zweckmäßigerweise ist die Schaltmatte aus einem Silikon gefertigt. Das Silikon lässt sich verhältnismäßig leicht einfärben und verarbeiten und weist die erforderliche Flexibilität bzw. Elastizität auf.Conveniently, the switching mat is made of a silicone. The silicone is relatively easy to color and process and has the required flexibility or elasticity.

Der Rahmen der Erfindung ist nur durch die Ansprüche definiert.The scope of the invention is defined only by the claims.

Die Erfindung wird im Folgenden anhand eines Ausführungsbeispieles unter Bezugnahme auf die zugehörige Zeichnung näher erläutert. Die einzige Fig. der Zeichnung zeigt eine Schnittdarstellung eines elektrischen Schalters mit einer erfindungsgemäßen Schaltmatte.The invention will be explained in more detail below with reference to an embodiment with reference to the accompanying drawings. The only Fig. The drawing shows a sectional view of an electrical switch with a switching mat according to the invention.

Der Schalter 1 umfasst ein Gehäuse 2, in dem zwei als Tasten 3 ausgebildete Betätigungselemente 4 mit jeweils einem lichtdurchlässigen Symbol 5 auf der Oberseite gelagert sind. An der Unterseite weisen die Tasten 3 einen umlaufenden Rand 6 auf, unter dem mit jeweils einem Schaltkontakt bestückte Dome 7 einer Schaltmatte 8 angeordnet sind. Die randseitig eine Leiterplatte 9 übergreifende Schaltmatte 8 aus Silikon weist Ausbuchtungen 10 auf, die in die zugeordnete Taste 3 ragen. In den Ausbuchtungen 10 befinden sich mit der Leiterplatte 9 elektrisch gekoppelte Leuchtelemente 11 zur Hinterleuchtung der Symbole 5 der aus einem lichtundurchlässigen Werkstoff gefertigten Taste 3.The switch 1 comprises a housing 2 in which two actuating elements 4 designed as buttons 3 are mounted, each with a translucent symbol 5 on the upper side. At the bottom, the keys 3 have a peripheral edge 6, are arranged under each equipped with a switching contact dome 7 of a switching mat 8. The edge side of a circuit board 9 cross-switching mat 8 made of silicone has protrusions 10 which protrude into the associated key 3. In the bulges 10 are electrically connected to the circuit board 9 lighting elements 11 for backlighting the symbols 5 of the made of an opaque material key. 3

Um einen unerwünschten Austritt von Streulicht, insbesondere aus einem zwischen dem Gehäuse 2 und den Tasten 3 vorhandenen Spalt 12, zu vermeiden und dennoch einen Lichtaustritt zur Beleuchtung der Symbole 5 der Tasten 3 sicherzustellen, ist das Silikon der Schaltmatte 8 mit schwarzen Farbpigmenten eingefärbt, deren Gewichtsanteil etwa 0,1 % beträgt. Durch die Einfärbung wird von dem Gehäuse 2 oder den Tasten 3 reflektiertes Streulicht von der Schaltmatte 8 absorbiert und gleichzeitig eine Hinterleuchtung der Tasten 3 erreicht.In order to avoid unwanted leakage of stray light, in particular from an existing between the housing 2 and the keys 3 gap 12, and yet a light exit to To ensure illumination of the symbols 5 of the buttons 3, the silicone of the switching mat 8 is dyed with black color pigments whose weight fraction is about 0.1%. By coloring the light reflected from the housing 2 or the keys 3 scattered light from the switching mat 8 and at the same time reaches a backlighting of the keys 3.

Claims (9)

  1. Electrical switch having a sensor mat and a backlit actuating element (4) mounted in a housing (2) for acting on switching contacts, at least one of the switching contacts being associated with the sensor mat (8), the actuating element (4) being designed as a key (3) and acting on the sensor mat (8), the sensor mat (8) being dark-coloured such that firstly scattered light is absorbed by the sensor mat (8) and secondly light is let through by the sensor mat (8) to backlight the actuating element (4), characterised in that the sensor mat (8) is coloured with a black dye or black colouring pigments and the percentage of dye or colouring pigments is less than 0.5%, in particular 0.1%.
  2. Switch according to claim 1, characterised in that the wall of the sensor mat (8) to be transilluminated has a reduced thickness compared with the other walls.
  3. Switch according to claim 1 or 2, characterised in that the sensor mat (8) has at least one dome (7) for receiving a switching contact with which is associated at least one fixed contact.
  4. Switch according to claim 3, characterised in that the fixed contact is formed on a printed circuit board (9) or by a pressed screen of the switch (1).
  5. Switch according to claim 4, characterised in that the printed circuit board (9) or the pressed screen carries a lighting element (11), in particular a LED.
  6. Switch according to any of claims 1 to 5, characterised in that the actuating element (4) is light-transmitting in a symbol region.
  7. Switch according to any of claims 1 to 6, characterised in that the actuating element (4) which is designed as a key (3) acts by a peripheral edge (6) at its free end associated with the sensor mat (8) on the dome (7) of the sensor mat (8).
  8. Switch according to any of claims 1 to 7, characterised in that the sensor mat (8) attached to the bottom side has at least one indentation (10) which spans the lighting element (11) and which extends into the actuating element (4).
  9. Switch according to any of claims 1 to 8, characterised in that the sensor mat (8) is made from a silicone.
EP05005330A 2005-03-11 2005-03-11 Switching pad for an electric switch Revoked EP1701368B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502005007313T DE502005007313D1 (en) 2005-03-11 2005-03-11 Safety mat for an electric switch
EP05005330A EP1701368B1 (en) 2005-03-11 2005-03-11 Switching pad for an electric switch
US11/369,250 US20060219539A1 (en) 2005-03-11 2006-03-07 Switch mat for an electrical switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05005330A EP1701368B1 (en) 2005-03-11 2005-03-11 Switching pad for an electric switch

Publications (2)

Publication Number Publication Date
EP1701368A1 EP1701368A1 (en) 2006-09-13
EP1701368B1 true EP1701368B1 (en) 2009-05-20

Family

ID=34934204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05005330A Revoked EP1701368B1 (en) 2005-03-11 2005-03-11 Switching pad for an electric switch

Country Status (3)

Country Link
US (1) US20060219539A1 (en)
EP (1) EP1701368B1 (en)
DE (1) DE502005007313D1 (en)

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Publication number Priority date Publication date Assignee Title
US6299320B1 (en) * 1999-07-01 2001-10-09 Alps Electric Co., Ltd. Illuminated switch unit

Also Published As

Publication number Publication date
DE502005007313D1 (en) 2009-07-02
EP1701368A1 (en) 2006-09-13
US20060219539A1 (en) 2006-10-05

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