EP1162638A2 - Arrangement for illuminating a control knob of an input device by transparency - Google Patents

Arrangement for illuminating a control knob of an input device by transparency Download PDF

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Publication number
EP1162638A2
EP1162638A2 EP01112668A EP01112668A EP1162638A2 EP 1162638 A2 EP1162638 A2 EP 1162638A2 EP 01112668 A EP01112668 A EP 01112668A EP 01112668 A EP01112668 A EP 01112668A EP 1162638 A2 EP1162638 A2 EP 1162638A2
Authority
EP
European Patent Office
Prior art keywords
light
light guide
arrangement according
partition
input unit
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.)
Granted
Application number
EP01112668A
Other languages
German (de)
French (fr)
Other versions
EP1162638B1 (en
EP1162638A3 (en
Inventor
Christian Dipl.-Ing. Dörrie (FH)
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
Mannesmann VDO AG
Siemens AG
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Filing date
Publication date
Application filed by Mannesmann VDO AG, Siemens AG filed Critical Mannesmann VDO AG
Publication of EP1162638A2 publication Critical patent/EP1162638A2/en
Publication of EP1162638A3 publication Critical patent/EP1162638A3/en
Application granted granted Critical
Publication of EP1162638B1 publication Critical patent/EP1162638B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02Details
    • H01H19/025Light-emitting indicators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0081Apparatus or processes specially adapted for the manufacture of electric switches using double shot moulding, e.g. for forming elastomeric sealing elements on form stable casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00Legends
    • H01H2219/054Optical elements
    • H01H2219/062Light conductor

Definitions

  • the invention relates to an arrangement for illuminating the control knob Input unit by means of transmitted light, the input unit being one has a partition attached rotary switch, the knob reaches through the supporting shaft on the opposite side of the partition and where at least one light source located on the side of the rotary switch is provided.
  • the transmitted light illumination of the control knobs of the input devices a partition should be problematic insofar as in contrast to one commercial and ready-to-install device assembly of input unit, Adjustment button and light guide must be done directly on the partition. Because of the dominance of such lighting at night, there are some uniform illumination of a control knob, be it that it as a whole or should only shine in an edge area or markings or scales of the control button should be made clear to make high demands. On the other hand, in particular for the lighting of the control knob the conditions when using the adjusting unit in the motor vehicle large series production and large series assembly.
  • the object of the present invention was therefore with the lowest possible Effort the control knob of a partition of the generic type to illuminate the assigned input unit by means of transmitted light.
  • the solution to the problem is characterized in that an optical fiber it is provided that on the light guide one to be examined Area of the adjusting knob is designed corresponding light-conducting surface, that the light guide is fastened to the partition on the knob side and that the light guide reaches through the partition onto the light source.
  • a preferred embodiment provides that the rotary switch Printed circuit board is assigned as a light source on the printed circuit board Contacted light-emitting diodes and that the light guide serve as a conical ring with molded in the axial direction and assigned to the light diodes, is formed light-guiding extensions.
  • the decisive advantage that the invention offers is that only a single light-guiding and manufactured by injection molding Component for the light guidance between the light source and the control knob is required and that homogeneous lighting of the control knob, in In the case of the exemplary embodiment, one provided on the adjusting knob revolving, for example the switching steps of the rotary switch optically emulating row of luminous dots, with only three light-emitting diodes can be realized.
  • the The light guide according to the invention in a simple manner, that is to say indirectly when Attach the input unit can be attached.
  • the light guide represents in the particularly advantageous coaxial arrangement, according to the Embodiment, so to speak, an washer, the Flange surfaces are not optically relevant.
  • the light guide provided within the light guide only a few optically effective areas, that is, areas higher Requires surface quality.
  • the light guide in the Interact with the one located in the partition Bulges provided through opening or with the Bores assigned to through holes, which are used for reaching through the light guide channels or the light-guiding extensions of the light guide are provided to prevent rotation of the input unit when a housing is assigned to the rotary switch and the attachment of the Input unit by means of a trained on the housing Thread approach takes place. Due to the anti-rotation function, reduce the fastening torque and in this way for that Input unit accommodating plastic housing a damage-free and achieve creep-resistant fastening.
  • the scale of a rotary switch with limited rotation angle on the same way can be illuminated by transmitted light, for such sectoral lighting, if necessary, only two or only one light-emitting diode must be provided as a light source. Otherwise they are different light rings or scale designs, for example also rows of symbols in the manner according to the invention by means of transmitted light illuminable. The same applies to different types of control knobs.
  • each deflection surface guides the received one Light in an asymmetrical with respect to the ring shape of the light guide Section of the ring, causing an overlap of the light fluxes two neighboring deflection surfaces. This also adds to the benefit achieved differences in brightness between the used LEDs are compensated.
  • the theoretically symmetrical to the radial intersection planes of the deflection surfaces or division planes of the Decreases existing sector-shaped areas of lower light intensity are, as experiments show, due to the arrangement and design of the Deflection surfaces sufficiently flooded with light.
  • FIG. 1 which serves as an overview, shows one on a partition 1 attached input unit 2, with a housing 3 on one side, an adjusting button 4 on the opposite side of the partition 1 are arranged.
  • a connector base is designated, which, as from FIG. 3 shows a circuit board 6 held in the housing 3 connected is.
  • the latter carries a rotary switch or a rotary and axial actuable switch 7, means for power supply and Signal processing and light-emitting diodes, two of which in FIG. 3 are shown and designated 8 and 9.
  • One of the rotary switch 7 assigned, partially D-profiled control shaft on which the control knob 4 is attached, is designated 10. 11 provides a cable 12 final and in the connector socket 5 is the connector.
  • the control knob 4 is, as can be seen from the drawings, stepped shaped, on the annular step face 13 one, for example the Switching steps of the rotary switch 7 corresponding division 14 is formed is.
  • the dividing elements, one of which is denoted by 15, are at the selected embodiment punctiform and by means of transmitted light designed to be illuminated.
  • the control knob 4 is expediently used in the two-component injection molding process manufactured, that is, the knob 4 consists of a relatively hard, light-conducting material made of PMMA Carrier 16 and a relatively soft, made of TPE, Easy-to-grip and opaque coat 17.
  • the carrier 16 On the carrier 16 are a version 18 for connecting the control knob 4 with the Actuating shaft 10 and the number of pins corresponding pins 19, the end faces of which are the dividing elements 15. Accordingly, the jacket 17, which is in a suitable manner with the Carrier 16 is positively toothed, designed such that the End faces of the pin 19 are uncovered.
  • a light guide is designated, which is indirectly by attaching the Housing 3, which with a threaded approach 21 through the partition 1 reaches through, is held on the partition 1.
  • the housing 3 is fastened by means of a nut 22, which a spring washer 23 is assigned.
  • the housing 3 is composed of two housing components is, the parting plane axially intersects the thread projection 21 and on the ledge halves strips and associated recesses as Joining elements are formed.
  • One of the strips is shown in Figure 3 and designated 24.
  • the two housing components by means of bayonet and locking connection means are put together, because they are not essential to the invention, in detail are not designated.
  • the light guide 20, which, like the support 16 of the adjusting button 4, is made of PMMA is made up essentially of one with a conical Shell surface 27 provided, flat ring 28 on which as Extensions 29, 30 and 31 serving as light guide channels are formed.
  • the End faces or the light entry surfaces of the extensions 29, 30, 31 of one of which is denoted by 32 in FIG. 4 can be used for focusing the light also be convex, are polished to avoid light loss.
  • With the same surface quality are the redirecting, as Light-conducting surface effective surface area 27 and in depressions 33, 34 and 35 equipped deflection surfaces 36, 37, 38, 39, 40 and 41 equipped, the depressions 33, 34 and 35 in the extension of the extensions 29, 30, 31 formed on the opposite side of the light guide 20 are.
  • the deflecting surfaces are curved in a suitable manner individual depressions 33, 34 and 35 are not concentric with the lateral surface 27 but formed such that they are each in a radial plane of the Cut the light guide 20.
  • An unspecified annular, the Knob 4 facing light exit surface of the light guide 20 is roughened to be uniform by light scattering To achieve illumination of the division 14.
  • the Threaded projection 21 of the housing 3 corresponding opening in the light guide 20th designated.
  • Reference numerals 43 and 44 denote two of those for the Passage of the extensions 29, 30, 31 in the housing 3 required Holes.
  • FIG. 5 shows that one of the fastening of the Input assembly on the partition 1 serving through opening 45 on the one hand a socket 46 assigned to the threaded connector 21 on the other hand for the passage of the extensions 29, 30, 31 of the light guide 20 provided bulges 47, 48 and 49.
  • the arrow indicated symbolizes the direction of light between a light emitting diode 8 and a dividing element 15 of the adjusting knob 4.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Mechanical Control Devices (AREA)

Abstract

The rotary adjustment knob (4) is used to operate switching elements within a housing (2). The housing is coupled to other equipment by a socket (5) and cable (12). The position of the knob is provided by illumination that is provided by an optical conductor (20) on the surface of a mounting plate (1).

Description

Die Erfindung betrifft eine Anordnung zur Beleuchtung des Stellknopfes eines Eingabeaggregates mittels Durchlicht, wobei das Eingabeaggregat einen an einer Trennwand befestigten Drehschalter aufweist, dessen den Stellknopf tragende Stellwelle auf die Gegenseite der Trennwand durchgreift und wobei wenigstens eine auf der Seite des Drehschalters befindliche Lichtquelle vorgesehen ist.The invention relates to an arrangement for illuminating the control knob Input unit by means of transmitted light, the input unit being one has a partition attached rotary switch, the knob reaches through the supporting shaft on the opposite side of the partition and where at least one light source located on the side of the rotary switch is provided.

Die Durchlicht-Beleuchtung der Stellknöpfe von Eingabeaggregaten, die an einer Trennwand, beispielsweise an einer Armaturentafel angeflanscht werden sollen, gestaltet sich insofern problematisch als im Gegensatz zu einem handelsfähigen und einbaufertigen Gerät eine Montage von Eingabeaggregat, Stellknopf und Lichtleitmitteln unmittelbar an der Trennwand erfolgen muss. Dabei sind wegen der Dominanz einer derartigen Beleuchtung bei Nacht an die gleichmäßige Ausleuchtung eines Stellknopfes, sei es, dass dieser als Ganzes oder nur in einem Randbereich leuchten soll bzw. Markierungen oder Skalen des Stellknopfes kenntlich gemacht werden sollen, hohe Ansprüche zu stellen. Auf der anderen Seite sind für die Beleuchtung des Stellknopfes insbesondere bei einer Anwendung des Einstellaggregates im Kraftfahrzeug die Bedingungen der Großserienfertigung und der Großserienmontage zu beachten.The transmitted light illumination of the control knobs of the input devices a partition, for example flanged to a dashboard should be problematic insofar as in contrast to one commercial and ready-to-install device assembly of input unit, Adjustment button and light guide must be done directly on the partition. Because of the dominance of such lighting at night, there are some uniform illumination of a control knob, be it that it as a whole or should only shine in an edge area or markings or scales of the control button should be made clear to make high demands. On the other hand, in particular for the lighting of the control knob the conditions when using the adjusting unit in the motor vehicle large series production and large series assembly.

Aufgabe der vorliegenden Erfindung war es somit, mit möglichst geringem Aufwand den Stellknopf eines einer Trennwand gattungsgemäß zugeordneten Eingabeaggregates mittels Durchlicht zu beleuchten.The object of the present invention was therefore with the lowest possible Effort the control knob of a partition of the generic type to illuminate the assigned input unit by means of transmitted light.

Die Lösung der Aufgabe ist dadurch gekennzeichnet, dass ein Lichtleiter vorgesehen ist, dass an dem Lichtleiter eine dem zu durchleuchtenden Bereich des Stellknopfes entsprechende Lichtausleitfläche ausgebildet ist, dass der Lichtleiter stellknopfseitig an der Trennwand befestigt ist und dass der Lichtleiter durch die Trennwand auf die Lichtquelle durchgreift.The solution to the problem is characterized in that an optical fiber it is provided that on the light guide one to be examined Area of the adjusting knob is designed corresponding light-conducting surface, that the light guide is fastened to the partition on the knob side and that the light guide reaches through the partition onto the light source.

Eine bevorzugte Ausführungsform sieht vor, dass dem Drehschalter eine Leiterplatte zugeordnet ist, dass als Lichtquelle auf der Leiterplatte kontaktierte Leuchtdioden dienen und dass der Lichtleiter als konischer Ring mit in Achsrichtung angeformten, den Lichtdioden zugeordneten, lichtleitenden Fortsätzen ausgebildet ist.A preferred embodiment provides that the rotary switch Printed circuit board is assigned as a light source on the printed circuit board Contacted light-emitting diodes and that the light guide serve as a conical ring with molded in the axial direction and assigned to the light diodes, is formed light-guiding extensions.

Der entscheidende Vorteil, den die Erfindung bietet, ist darin zu sehen, dass lediglich ein einziges lichtleitendes und im Spritzgießverfahren hergestelltes Bauteil für die Lichtführung zwischen der Lichtquelle und dem Stellknopf erforderlich ist und dass eine homogene Beleuchtung des Stellknopfes, im Falle des Ausführungsbeispiels einer an dem Stellknopf vorgesehenen umlaufenden, beispielsweise die Schaltschritte des Drehschalters optisch nachbildenden Reihe von Leuchtpunkten, mit nur drei Leuchtdioden verwirklicht werden kann. Ferner ist hervorzuheben, dass der erfindungsgemäße Lichtleiter auf einfache Weise, das heißt mittelbar beim Befestigen des Eingabeaggregates befestigt werden kann. Der Lichtleiter stellt bei der besonders vorteilhaften koaxialen Anordnung, gemäß dem Ausführungsbeispiel, sozusagen eine Zwischenlegscheibe dar, wobei die Flanschflächen optisch nicht relevant sind. In diesem Zusammenhang sei hervorgehoben, dass die innerhalb des Lichtleiters vorgesehene Lichtführung nur wenige optisch wirksame Flächen, das heißt, Flächen hoher Oberflächengüte erforderlich macht. Außerdem stellt der Lichtleiter im Zusammenwirken mit der in der Trennwand befindlichen, mit Ausbuchtungen versehenen Durchgangsöffnung oder mit der Durchgangsöffnung zugeordneten Bohrungen, welche für das Durchgreifen der Lichtleitkanäle bzw. der lichtleitenden Fortsätze des Lichtleiters vorgesehen sind, eine Verdrehsicherung des Eingabeaggregates dar, wenn dem Drehschalter ein Gehäuse zugeordnet ist und die Befestigung des Eingabeaggregates mittels eines an dem Gehäuse ausgebildeten Gewindeansatzes erfolgt. Aufgrund der Verdrehsicherungsfunktion läßt sich das Befestigungsmoment reduzieren und auf diese Weise für das das Eingabeaggregat aufnehmende Kunststoffgehäuse eine beschädigungsfreie und kriechfeste Befestigung erzielen.The decisive advantage that the invention offers is that only a single light-guiding and manufactured by injection molding Component for the light guidance between the light source and the control knob is required and that homogeneous lighting of the control knob, in In the case of the exemplary embodiment, one provided on the adjusting knob revolving, for example the switching steps of the rotary switch optically emulating row of luminous dots, with only three light-emitting diodes can be realized. It should also be emphasized that the The light guide according to the invention in a simple manner, that is to say indirectly when Attach the input unit can be attached. The light guide represents in the particularly advantageous coaxial arrangement, according to the Embodiment, so to speak, an washer, the Flange surfaces are not optically relevant. In this context emphasized that the light guide provided within the light guide only a few optically effective areas, that is, areas higher Requires surface quality. In addition, the light guide in the Interact with the one located in the partition Bulges provided through opening or with the Bores assigned to through holes, which are used for reaching through the light guide channels or the light-guiding extensions of the light guide are provided to prevent rotation of the input unit when a housing is assigned to the rotary switch and the attachment of the Input unit by means of a trained on the housing Thread approach takes place. Due to the anti-rotation function, reduce the fastening torque and in this way for that Input unit accommodating plastic housing a damage-free and achieve creep-resistant fastening.

Von grundsätzlicher Bedeutung ist, dass es die Erfindung auf einfache Weise ermöglicht, der Durchlicht-Beleuchtung eines Stellknopfes oder auch der Ausleuchtung einer an einem Stellknopf ausgebildeten Skale dienendes Licht von der einen Seite einer Trennwand, beispielsweise einer Armaturentafel, an der das betreffende Eingabeaggregat angeflanscht ist, auf die andere Seite der Trennwand, an der sich der Stellknopf befindet, zu leiten.It is of fundamental importance that it simplifies the invention Way, the transmitted light illumination of a control knob or also to illuminate a scale formed on an adjusting knob Light from one side of a partition, for example one Dashboard on which the input unit in question is flanged, to the other side of the partition where the control knob is located conduct.

Der Vollständigkeit halber sei außerdem noch darauf hingewiesen, dass auch die Skale eines Drehschalters mit begrenztem Drehwinkel auf die gleiche Weise mittels Durchlicht beleuchtbar ist, wobei für eine derartige sektorielle Beleuchtung gegebenenfalls nur zwei oder nur eine Leuchtdiode als Lichtquelle vorgesehen werden müssen. Im übrigen sind die unterschiedlichsten Lichtkränze oder Skalengestaltungen, beispielsweise auch Symbolreihen, in der erfindungsgemäßen Weise mittels Durchlicht beleuchtbar. Gleiches gilt für verschiedene Bauformen von Stellknöpfen. Außerdem lässt sich, wie im Ausführungsbeispiel dargestellt, eine Anordnung von Lichtleiter und Stellknopf derart treffen, dass der Stellknopf den Lichtleiter umgreift und dadurch Streulicht abgeblendet ist oder der Stellknopf mit einem gewissen Abstand vom Lichtleiter angeordnet ist und somit infolge des austretenden Streulichtes ein Lichthof auf der Trennwand entsteht.For the sake of completeness, it should also be pointed out that also the scale of a rotary switch with limited rotation angle on the the same way can be illuminated by transmitted light, for such sectoral lighting, if necessary, only two or only one light-emitting diode must be provided as a light source. Otherwise they are different light rings or scale designs, for example also rows of symbols in the manner according to the invention by means of transmitted light illuminable. The same applies to different types of control knobs. In addition, as shown in the exemplary embodiment, a Arrange the light guide and control knob in such a way that the control knob encompasses the light guide and is thereby dimmed by stray light or Control knob is arranged at a certain distance from the light guide and thus a halo on the partition as a result of the emerging scattered light arises.

Die mit der erfindungsgemäßen Anordnung, das heißt mit einem Minimum an Leuchtdioden erzielbare Lichtverteilung und gleichmäßige Ausleuchtung des Stellknopfes bzw. des zur Beleuchtung des Stellknopfes vorgesehenen Kranzes von Leuchtpunkten ist in hohem Maße durch die den lichtleitenden Fortsätzen zugeordneten, an den Senkungen des Lichtleiters ausgebildeten Umlenkflächen verursacht. Dabei leitet jede Umlenkfläche das empfangene Licht in einen, bezogen auf die Ringform des Lichtleiters asymmetrischen Abschnitt des Ringes ein, wodurch eine Überlappung der Lichtströme zweier benachbarter Umlenkflächen entsteht. Dadurch wird zusätzlich der Vorteil erzielt, dass Helligkeitsunterschiede zwischen den verwendeten Leuchtdioden ausgeglichen werden. Die theoretisch symmetrisch zu den radialen Verschneidungsebenen der Umlenkflächen bzw. Teilungsebenen der Senkungen bestehenden sektorförmigen Bereiche geringerer Lichtintensität sind, wie Versuche zeigen, aufgrund der Anordnung und Ausbildung der Umlenkflächen ausreichend mit Licht durchflutet.The with the arrangement according to the invention, that is, with a minimum light distribution achievable on LEDs and uniform illumination of the control knob or the one provided for illuminating the control knob Wreath of luminous dots is largely due to the light-guiding Associated with extensions formed on the depressions of the light guide Deflection surfaces caused. Each deflection surface guides the received one Light in an asymmetrical with respect to the ring shape of the light guide Section of the ring, causing an overlap of the light fluxes two neighboring deflection surfaces. This also adds to the benefit achieved differences in brightness between the used LEDs are compensated. The theoretically symmetrical to the radial intersection planes of the deflection surfaces or division planes of the Decreases existing sector-shaped areas of lower light intensity are, as experiments show, due to the arrangement and design of the Deflection surfaces sufficiently flooded with light.

Im folgenden sei die Erfindung anhand von Zeichnungen näher erläutert.The invention is explained in more detail below with reference to drawings.

Es zeigen:

Figur 1
eine Seitenansicht eines an einer Trennwand montierten Eingabeaggregates,
Figur 2
eine Draufsicht des Eingabeaggregates gemäß Figur 1,
Figur 3
eine gegenüber Figur 1 vergrößerte Darstellung des Eingabeaggregates mit mehreren Teilschnitten,
Figur 4
eine perspektivische Darstellung des Lichtleiters,
Figur 5
eine Draufsicht der Trennwand im Bereich einer dem Eingabeaggregat zugeordneten Durchgangsöffnung.
Show it:
Figure 1
2 shows a side view of an input unit mounted on a partition,
Figure 2
2 shows a top view of the input unit according to FIG. 1,
Figure 3
FIG. 1 shows an enlarged representation of the input unit with several partial sections,
Figure 4
a perspective view of the light guide,
Figure 5
a plan view of the partition in the area of a through opening assigned to the input unit.

Die als Übersichtsdarstellung dienende Figur 1 zeigt ein an einer Trennwand 1 befestigtes Eingabeaggregat 2, wobei ein Gehäuse 3 an der einen Seite, ein Stellknopf 4 auf der gegenüberliegenden Seite der Trennwand 1 angeordnet sind. Mit 5 ist ein Steckersockel bezeichnet, welcher, wie aus Figur 3 hervorgeht, mit einer in dem Gehäuse 3 gehalterten Leiterplatte 6 verbunden ist. Letztere trägt einen Drehschalter oder einen dreh- und axial betätigbaren Schalter 7, Mittel zur Spannungsversorgung und Signalaufbereitung sowie Leuchtdioden von denen in Figur 3 zwei dargestellt und mit 8 und 9 bezeichnet sind. Eine dem Drehschalter 7 zugeordnete, teilweise D-profilierte Stellwelle, auf der der Stellknopf 4 befestigt ist, ist mit 10 bezeichnet. 11 stellt einen ein Kabel 12 abschließender und in dem Steckersockel 5 aufgenommener Stecker dar. Der Stellknopf 4 ist, wie aus den Zeichnungen ersichtlich ist, gestuft geformt, wobei an der ringförmigen Stufenstirn 13 eine, beispielsweise den Schaltschritten des Drehschalters 7 entsprechenden Teilung 14 ausgebildet ist. Die Teilungselemente, von denen eines mit 15 bezeichnet ist, sind bei dem gewählten Ausführungsbeispiel punktförmig und mittels Durchlicht beleuchtbar gestaltet. Zweckmäßigerweise wird der Stellknopf 4 im Zwei-Komponenten-Spritzgießverfahren hergestellt, das heißt, der Stellknopf 4 besteht aus einem aus PMMA hergestellten, relativ harten, lichtleitenden Träger 16 und einem aus TPE hergestellten relativ weichen, griffsympathischen und lichtundurchlässigen Mantel 17. An dem Träger 16 sind eine Fassung 18 für die Verbindung des Stellknopfes 4 mit der Stellwelle 10 sowie der Anzahl der Teilungselemente entsprechende Zapfen 19, deren Stirnflächen die Teilungselemente 15 darstellen, ausgebildet. Dementsprechend ist der Mantel 17, der in geeigneter Weise mit dem Träger 16 formschlüssig verzahnt ist, derart ausgebildet, dass die Stirnflächen der Zapfen 19 unbedeckt sind.FIG. 1, which serves as an overview, shows one on a partition 1 attached input unit 2, with a housing 3 on one side, an adjusting button 4 on the opposite side of the partition 1 are arranged. With 5 a connector base is designated, which, as from FIG. 3 shows a circuit board 6 held in the housing 3 connected is. The latter carries a rotary switch or a rotary and axial actuable switch 7, means for power supply and Signal processing and light-emitting diodes, two of which in FIG. 3 are shown and designated 8 and 9. One of the rotary switch 7 assigned, partially D-profiled control shaft on which the control knob 4 is attached, is designated 10. 11 provides a cable 12 final and in the connector socket 5 is the connector. The control knob 4 is, as can be seen from the drawings, stepped shaped, on the annular step face 13 one, for example the Switching steps of the rotary switch 7 corresponding division 14 is formed is. The dividing elements, one of which is denoted by 15, are at the selected embodiment punctiform and by means of transmitted light designed to be illuminated. The control knob 4 is expediently used in the two-component injection molding process manufactured, that is, the knob 4 consists of a relatively hard, light-conducting material made of PMMA Carrier 16 and a relatively soft, made of TPE, Easy-to-grip and opaque coat 17. On the carrier 16 are a version 18 for connecting the control knob 4 with the Actuating shaft 10 and the number of pins corresponding pins 19, the end faces of which are the dividing elements 15. Accordingly, the jacket 17, which is in a suitable manner with the Carrier 16 is positively toothed, designed such that the End faces of the pin 19 are uncovered.

Mit 20 ist ein Lichtleiter bezeichnet, welcher mittelbar durch Befestigen des Gehäuses 3, das mit einem Gewindeansatz 21 durch die Trennwand 1 durchgreift, an der Trennwand 1 festgehalten wird.With 20 a light guide is designated, which is indirectly by attaching the Housing 3, which with a threaded approach 21 through the partition 1 reaches through, is held on the partition 1.

Das Befestigen des Gehäuses 3 erfolgt mittels einer Mutter 22, welcher eine Federscheibe 23 zugeordnet ist. In diesem Zusammenhang sei noch erwähnt, dass das Gehäuse 3 aus zwei Gehäusebauteilen zusammengefügt ist, wobei die Teilungsebene den Gewindeansatz 21 axial schneidet und an den Gewindeansatzhälften Leisten und diesen zugeordnete Vertiefungen als Fügeelemente ausgebildet sind. Eine der Leisten ist in Figur 3 dargestellt und mit 24 bezeichnet. Außerdem sei noch darauf hingewiesen, dass die beiden Gehäusebauteile mittels Renk- und Rastverbindungsmittel zusammengefügt sind, die, weil nicht erfindungswesentlich, im einzelnen nicht bezeichnet sind. Wie aus der Figur 3 ferner noch ersichtlich ist, dienen an den Gehäusebauteilen ausgebildete Halterungen 25 und Rippenelemente 26 der Aufnahme und dem Abstützen der Leiterplatte 6.The housing 3 is fastened by means of a nut 22, which a spring washer 23 is assigned. In this context it is still mentions that the housing 3 is composed of two housing components is, the parting plane axially intersects the thread projection 21 and on the ledge halves strips and associated recesses as Joining elements are formed. One of the strips is shown in Figure 3 and designated 24. It should also be noted that the two housing components by means of bayonet and locking connection means are put together, because they are not essential to the invention, in detail are not designated. As can also be seen from FIG. 3, serve Brackets 25 and rib elements formed on the housing components 26 of receiving and supporting the circuit board 6.

Der Lichtleiter 20, der wie der Träger 16 des Stellknopfes 4 aus PMMA hergestellt ist, besteht im wesentlichen aus einem mit einer konischen Mantelfläche 27 versehenen, flachen Ring 28, an welchem als Lichtleitkanäle dienende Fortsätze 29, 30 und 31 angeformt sind. Die Stirnflächen bzw. die Lichteintrittsflächen der Fortsätze 29, 30, 31 von denen eine in Figur 4 mit 32 bezeichnet ist, können zur Lichtbündelung auch konvex ausgebildet sein, sind, um Lichtverluste zu vermeiden, poliert. Mit der gleichen Oberflächengüte sind auch die umlenkende, als Lichtausleitfläche wirksame Mantelfläche 27 und in Senkungen 33, 34 und 35 ausgebildete Umlenkflächen 36, 37, 38, 39, 40 und 41 ausgerüstet, wobei die Senkungen 33, 34 und 35 in der Verlängerung der Fortsätze 29, 30, 31 an der gegenüberliegenden Seite des Lichtleiters 20 ausgeformt sind. Dabei sind die in geeigneter Weise gekrümmten Umlenkflächen der einzelnen Senkungen 33, 34 und 35 nicht konzentrisch zur Mantelfläche 27 sondern derart ausgebildet, dass sie sich in jeweils einer radialen Ebene des Lichtleiters 20 schneiden. Eine nicht näher bezeichnete ringförmige, dem Stellknopf 4 zugewandte Lichtaustrittsfläche des Lichtleiters 20 ist aufgeraut ausgebildet, um durch Lichtstreuung eine gleichmäßige Ausleuchtung der Teilung 14 zu erzielen. Mit 42 ist die zentrale, dem Gewindeansatz 21 des Gehäuses 3 entsprechende Öffnung im Lichtleiter 20 bezeichnet. Die Bezugszeichen 43 und 44 bezeichnen zwei der für den Durchtritt der Fortsätze 29, 30, 31 in das Gehäuse 3 erforderlichen Bohrungen.The light guide 20, which, like the support 16 of the adjusting button 4, is made of PMMA is made up essentially of one with a conical Shell surface 27 provided, flat ring 28 on which as Extensions 29, 30 and 31 serving as light guide channels are formed. The End faces or the light entry surfaces of the extensions 29, 30, 31 of one of which is denoted by 32 in FIG. 4 can be used for focusing the light also be convex, are polished to avoid light loss. With the same surface quality are the redirecting, as Light-conducting surface effective surface area 27 and in depressions 33, 34 and 35 equipped deflection surfaces 36, 37, 38, 39, 40 and 41 equipped, the depressions 33, 34 and 35 in the extension of the extensions 29, 30, 31 formed on the opposite side of the light guide 20 are. The deflecting surfaces are curved in a suitable manner individual depressions 33, 34 and 35 are not concentric with the lateral surface 27 but formed such that they are each in a radial plane of the Cut the light guide 20. An unspecified annular, the Knob 4 facing light exit surface of the light guide 20 is roughened to be uniform by light scattering To achieve illumination of the division 14. At 42 is the central, the Threaded projection 21 of the housing 3 corresponding opening in the light guide 20th designated. Reference numerals 43 and 44 denote two of those for the Passage of the extensions 29, 30, 31 in the housing 3 required Holes.

Mit der Figur 5 wird verdeutlicht, dass eine der Befestigung des Eingabeaggregates an der Trennwand 1 dienende Durchgangsöffnung 45 einerseits eine dem Gewindestutzen 21 zugeordnete Fassung 46 andererseits für den Durchtritt der Fortsätze 29, 30, 31 des Lichtleiters 20 vorgesehene Ausbuchtungen 47, 48 und 49 aufweist. Ein mit 50 bezeichneter Pfeil symbolisiert die Lichtführung zwischen einer Leuchtdiode 8 und einem Teilungselement 15 des Stellknopfes 4.5 shows that one of the fastening of the Input assembly on the partition 1 serving through opening 45 on the one hand a socket 46 assigned to the threaded connector 21 on the other hand for the passage of the extensions 29, 30, 31 of the light guide 20 provided bulges 47, 48 and 49. One with 50 The arrow indicated symbolizes the direction of light between a light emitting diode 8 and a dividing element 15 of the adjusting knob 4.

Claims (10)

Anordnung zur Beleuchtung des Stellknopfes eines Eingabeaggregates mittels Durchlicht, wobei das Eingabeaggregat einen an einer Trennwand befestigten Drehschalter aufweist, dessen den Stellknopf tragende Stellwelle auf die Gegenseite der Trennwand durchgreift und wobei wenigstens eine auf der Seite des Drehschalters befindliche Lichtquelle vorgesehen ist,
dadurch gekennzeichnet, dass ein Lichtleiter (20 vorgesehen ist,
dass an dem Lichtleiter (20) eine dem zu durchleuchtenden Bereich des Stellknopfes (4) entsprechende Lichtausleitfläche ausgebildet ist,
dass der Lichtleiter (20) stellknopfseitig an der Trennwand (1) befestigt ist und
dass der Lichtleiter (20) durch die Trennwand (1) auf die Lichtquelle durchgreift.
Arrangement for illuminating the control knob of an input unit by means of transmitted light, the input unit having a rotary switch attached to a partition, the control shaft carrying the control knob reaching through to the opposite side of the partition and at least one light source located on the side of the rotary switch being provided,
characterized in that a light guide (20 is provided,
that a light-guiding surface corresponding to the area of the adjusting knob (4) to be illuminated is formed on the light guide (20),
that the light guide (20) is fastened on the knob side to the partition (1) and
that the light guide (20) reaches through the partition (1) onto the light source.
Anordnung nach Anspruch 1,
dadurch gekennzeichnet, dass an dem Lichtleiter (20) ein Lichtleitkanal mit einer der Lichtquelle zugeordneten Lichteintrittsfläche angeformt ist und
dass der Lichtleiter (20) mittelbar beim Befestigen des Eingabeaggregates (2) an der Trennwand (1) befestigbar ist.
Arrangement according to claim 1,
characterized in that a light guide channel with a light entry surface assigned to the light source is formed on the light guide (20) and
that the light guide (20) can be attached indirectly to the partition (1) when the input unit (2) is attached.
Anordnung nach Anspruch 2,
dadurch gekennzeichnet, dass die Befestigung des Eingabeaggregates (2) mittels einer Schraubverbindung erfolgt, wobei an dem Eingabeaggregat (2) ein Gewindeansatz (21) vorgesehen ist und
dass in der Trennwand (1) eine dem Durchmesser des Gewindeansatzes (21) entsprechende Fassung (46) sowie eine der Durchführung des Lichtleitkanals dienende Freisparung ausgebildet sind.
Arrangement according to claim 2,
characterized in that the fastening of the input unit (2) takes place by means of a screw connection, a threaded attachment (21) being provided on the input unit (2) and
that in the partition (1) a socket (46) corresponding to the diameter of the threaded shoulder (21) and a recess serving to pass the light guide channel are formed.
Anordnung nach Anspruch 1,
dadurch gekennzeichnet, dass dem Drehschalter (7) eine Leiterplatte (6) zugeordnet ist und
dass als Lichtquelle eine auf der Leiterplatte (6) kontaktierte Leuchtdiode (8, 9) dient.
Arrangement according to claim 1,
characterized in that a circuit board (6) is assigned to the rotary switch (7) and
that a light-emitting diode (8, 9) contacted on the printed circuit board (6) serves as the light source.
Anordnung nach Anspruch 2,
dadurch gekennzeichnet, dass der Lichtleiter (20) als konischer Ring (28) mit wenigstens einem in Achsrichtung angeformten als Lichtleitkanal dienender Fortsatz (29, 30, 31) ausgebildet ist.
Arrangement according to claim 2,
characterized in that the light guide (20) is designed as a conical ring (28) with at least one extension (29, 30, 31) formed in the axial direction and serving as a light guide channel.
Anordnung nach Anspruch 5,
dadurch gekennzeichnet, dass an dem Lichtleiter (20) im Winkelabstand von 120° Fortsätze (29, 30, 31) ausgebildet sind und
dass jedem Fortsatz (29, 30, 31) eine auf der Leiterplatte (6) angeordnete Leuchtdiode (8, 9) zugeordnet ist.
Arrangement according to claim 5,
characterized in that extensions (29, 30, 31) are formed on the light guide (20) at an angular distance of 120 ° and
that each extension (29, 30, 31) is assigned a light-emitting diode (8, 9) arranged on the printed circuit board (6).
Anordnung nach Anspruch 6,
dadurch gekennzeichnet, dass in Verlängerung der Fortsätze (29, 30, 31) an der den Fortsätzen (29, 30, 31) abgewandten Seite des Lichtleiters (20) teilweise kegelförmig ausgebildete Senkungen (33, 34, 35) vorgesehen sind.
Arrangement according to claim 6,
characterized in that in the extension of the extensions (29, 30, 31) on the side of the light guide (20) facing away from the extensions (29, 30, 31) there are partially conical depressions (33, 34, 35).
Anordnung nach Anspruch 7,
dadurch gekennzeichnet, dass die Senkungen (29, 30, 31) jeweils zwei kegelförmige Umlenkflächen (36, 37, 38, 39, 40, 41) aufweisen, wobei die Umlenkflächen (36, 37, 38, 39, 40, 41) nicht konzentrisch zur lichtausleitenden Mantelfläche (27) des Lichtleiters (20) ausgebildet sind.
Arrangement according to claim 7,
characterized in that the depressions (29, 30, 31) each have two conical deflection surfaces (36, 37, 38, 39, 40, 41), the deflection surfaces (36, 37, 38, 39, 40, 41) not being concentric to the light-conducting outer surface (27) of the light guide (20) are formed.
Anordnung nach Anspruch 6,
dadurch gekennzeichnet, dass dem im wesentlichen aus Drehschalter (7), Leiterplatte (6) und Leuchtdioden (8, 9) bestehendem Eingabeaggregat (2) ein Gehäuse (3) zugeordnet ist und
dass in der Gehäusewand, die mit einer Öffnung für den Austritt der Stellwelle (10) versehen ist, zusätzliche Bohrungen (43, 44) für den Eintritt der Fortsätze (29, 30, 31) ausgebildet sind.
Arrangement according to claim 6,
characterized in that a housing (3) is associated with the input assembly (2) consisting essentially of rotary switch (7), printed circuit board (6) and light emitting diodes (8, 9) and
that additional bores (43, 44) for the entry of the extensions (29, 30, 31) are formed in the housing wall, which is provided with an opening for the exit of the actuating shaft (10).
Anordnung nach Anspruch 1,
dadurch gekennzeichnet, dass der Stellknopf (4) randlich einen Kranz von transparent ausgebildeten Teilungselementen (15) aufweist und
dass an dem Lichtleiter (20) eine ringförmige, der Mantelfläche 27 zugeordnete, lichtstreuend ausgebildete Lichtaustrittsfläche vorgesehen ist.
Arrangement according to claim 1,
characterized in that the adjusting knob (4) has a rim of transparent dividing elements (15) on the edge and
that an annular, light-scattering light exit surface is provided on the light guide (20) and is assigned to the outer surface 27.
EP01112668A 2000-06-09 2001-05-25 Arrangement for illuminating a control knob of an input device by transparency Expired - Lifetime EP1162638B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20010428U 2000-06-09
DE20010428U DE20010428U1 (en) 2000-06-09 2000-06-09 Arrangement for illuminating the control button of an input unit by means of transmitted light

Publications (3)

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EP1162638A2 true EP1162638A2 (en) 2001-12-12
EP1162638A3 EP1162638A3 (en) 2004-04-07
EP1162638B1 EP1162638B1 (en) 2012-01-11

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Also Published As

Publication number Publication date
US6685327B2 (en) 2004-02-03
EP1162638B1 (en) 2012-01-11
US20020075668A1 (en) 2002-06-20
EP1162638A3 (en) 2004-04-07
DE20010428U1 (en) 2000-08-17

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