EP1752853A1 - Hintergrundbeleuchtung eines Betätigungsknopfs mit Lichtleiter - Google Patents

Hintergrundbeleuchtung eines Betätigungsknopfs mit Lichtleiter Download PDF

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Publication number
EP1752853A1
EP1752853A1 EP20060116735 EP06116735A EP1752853A1 EP 1752853 A1 EP1752853 A1 EP 1752853A1 EP 20060116735 EP20060116735 EP 20060116735 EP 06116735 A EP06116735 A EP 06116735A EP 1752853 A1 EP1752853 A1 EP 1752853A1
Authority
EP
European Patent Office
Prior art keywords
light guide
control button
light
control
control device
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
EP20060116735
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English (en)
French (fr)
Other versions
EP1752853B1 (de
Inventor
Djamel Lekmine
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.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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 Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP1752853A1 publication Critical patent/EP1752853A1/de
Application granted granted Critical
Publication of EP1752853B1 publication Critical patent/EP1752853B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • G05G1/10—Details, e.g. of discs, knobs, wheels or handles
    • G05G1/105—Details, e.g. of discs, knobs, wheels or handles comprising arrangements for illumination

Definitions

  • the present invention generally relates to the control buttons, and more particularly to the control buttons with backlighting, in particular to the control buttons for setting a parameter in the field of the automotive industry.
  • the dashboard of the vehicle generally comprises movable control buttons for setting a defined parameter, for example relating to a temperature setpoint and / or air flow powered by a heater, ventilation and / or air conditioner.
  • a defined parameter for example relating to a temperature setpoint and / or air flow powered by a heater, ventilation and / or air conditioner.
  • the control button is preferably illuminated to allow the user to know the position of the control button.
  • the automotive industry uses control devices with a movable control knob and a light guide surrounding the backlit control button, to illuminate the position of the control knob and its possible parameter level indicators. .
  • the patent US 6,685,327 discloses a rotary control knob with a backlit light guide ring which surrounds the control button, the light being provided by a plurality of light sources, preferably three for uniform illumination, the light being guided from the sources to the light sources. output by light guide channels.
  • buttons used to date generally include a movable control button, embedded in a housing facade that may be generally a dashboard, a light guide that surrounds the control button and which serves as a guide for the movement of said button.
  • the backlight of the set is always provided by several light sources, and the position of the light sources corresponds to the periphery of the device, the light sources are therefore facing the light guide surrounding the control button, to illuminate the light guide.
  • the light guide has both the function of guiding the movement of the control knob and that of lighting, which raises several problems.
  • the guiding movement of the control button by the light guide is made difficult by the mechanical incompatibility of material between the light guide made of transparent plastic material and the movable control knob made of plastic material, friction and friction not facilitating the sliding between these two materials in contact.
  • the homogeneity of the illumination is difficult to obtain, by the number and the arrangement of the light sources in the device, which imposes successive adjustment and optimization phases during the assembly of the device, and which is therefore not optimal for cost and production time requirements.
  • the object of the present invention is to improve the guidance of the movement of the movable control button on the one hand, and to optimize and homogenize the backlight on the other hand.
  • the invention proposes for this purpose a control device comprising a movable control button having a part to be inserted into an opening of a housing facade, a light source and light guide means conveying the light of the light source. at a visible part of the light guide means. At least part of the part to be inserted is at least partially the light guide means.
  • the control device thus comprises a movable control button, which comprises an outer portion to the housing facade, for example a portion of a dashboard of a motor vehicle, and an inner portion to be inserted into the opening of said facade of housing.
  • the outer portion is accessible to the driver and / or the passenger to allow the adjustment by the driver or the passenger of a parameter relating to a setpoint, and may have gripping means to allow the user a good grip.
  • the light guide means which convey the light emitted by the light source, comprise a portion visible to the driver / passenger, to locate the control button and the adjustment level of the selected parameter.
  • the visible portion of the backlit light guide means surrounds the control knob.
  • the light guide means may be of standard transparent or translucent plastic material of the desired color.
  • the portion to be inserted into the opening of the movable control knob constitutes at least partially said light guide means
  • light emitted by the light source can be transmitted from the insert portion of the movable button to the visible part of the backlit light guide means.
  • the light source can be positioned inside the insert part of the control button, and not at the periphery as is the case in the devices of the prior art, in which several Light sources are positioned at the periphery of the device, i.e. facing the light guide surrounding the control button, to illuminate the light guide.
  • the backlight of the assembly can be provided by a single light source, the control button then having a function of "light reservoir", and the light is conveyed to the visible part of the light guide means. This may further facilitate the adjustment and homogeneity of the backlight, since only one source is to be considered.
  • the part to be inserted into the opening of the control button may also comprise at least in the constitutive zone of the light guide means a portion of transparent or translucent plastic material standard, of the desired color.
  • a translucent material, PC type white or colored, may be preferred, because this type of material makes it possible to better homogenize the transmitted light.
  • control button may also include visual symbols or pictograms, on the portion of the control button accessible by the driver / passenger.
  • the light emitted inside the control button by the light source can thus backlight the visual symbols.
  • the housing facade may be a part of a dashboard wall of a motor vehicle, which may include different openings, some of which are provided to accommodate different control buttons or other devices.
  • a standard plastic material such as ABS or ABS / PC for example, may be preferred for the facade.
  • said light source is in a substantially central position with respect to said movable control knob.
  • said general symmetry of the control device can be increased, which can facilitate the adjustment of the light source and the backlight, and further improve the homogeneity of the backlight.
  • it is envisaged to use only one light source.
  • the development of the backlight relative to the visible part of the light guide means can be achieved in a single phase, which offers significant time, cost and productivity gains.
  • the light source may be an LED, but any other light source such as a conventional light bulb is also conceivable.
  • the light source is integrated on an electronic card, its substantially central position also has the additional advantage that said light source does not constitute a barrier for the routing of the card.
  • control device further comprises an inner part forming at least one bearing to guide the movement of said control knob relative to the facade.
  • the movement of the control button is guided by the light guide means surrounding the insert portion of the control button.
  • these two components respectively of transparent plastic material and a plastic material, are not mechanically compatible.
  • the inner part can be chosen inter alia for its mechanical properties, so that the guide can be made between two parts having mechanically compatible materials, and to limit as much as possible the friction and the play of the parts with respect to other.
  • the inner part can form at least one bearing to guide the movement of the movable control knob relative to the facade; when the command button is very long or if necessary, it is also possible to provide a recovery for guiding, that is to say that the inner part can form one or more additional guide bearings.
  • said inner part may itself be movable relative to said facade, and its movement may itself be guided by the facade.
  • the inner part can be injected in thermoplastic material, chosen for its friction properties, and in particular to be compatible with the constituent material of the housing facade, and thus ensure better sliding during the movement of the inner part with respect to the facade .
  • the outer surface of the inner part can be provided with an encoder device, for example by means of small notches or ribs, and which can actuate a switch on an electronic card. It is thus possible in particular to locate the position of the control button and change the setpoint of the chosen parameter.
  • the outer surface may comprise notches for actuating a mechanical sensor, or any other position sensing device, potentiometer or sensor, in particular in order to set a setpoint of a given parameter, and for example a temperature setpoint and / or airflow powered by a heater, ventilation and / or air conditioning.
  • said control knob is integral with said inner part.
  • the inner part and the control button are fixed and integral with each other, the inner part being itself movable relative to said facade.
  • the insert portion of the control button at least partially comprises light guide means, and is at least partially made of a translucent or transparent material. Solidarization and thus fixing the control knob relative to the inner part makes it possible to overcome the mechanical conditions between these two components.
  • the control button consists of a single transparent material.
  • the inner part is injected with one and the same plastic material, compatible with that of the facade. Polyoxymethylene would be a good example, the front being ABS or ABS / PC.
  • the fastening of said control button to said inner part can be effected by means of clips between the insert part of the control button and the inner part.
  • This fixing means is simple to implement and inexpensive.
  • said control button is a rotary button, said light guide means comprising at least one piece of substantially annular shape.
  • the control device can therefore have a substantially annular shape, which allows it to easily integrate with many dashboards.
  • the rounded / annular shape considerably increases the symmetry of the system, and consequently improves the settings and tunings of the backlight, while eliminating the problems of centering.
  • the diameters of the insert part of the control button, the visible light guide means and the inner part could then be changed.
  • Said light guide means comprise at least two parts having faces to juxtapose and / or at least one optically treated end surface (s).
  • the light guide means comprise at least one visible part, which may form part of the backlit light guide surrounding the control button for the illumination of the control device, and the part to be inserted into the opening of the control button which at least partially constitutes said light guide means.
  • the faces to be juxtaposed can therefore be the faces in correspondence of the part surrounding the control button of the light guide means and the insert part of the control button.
  • an optical treatment of the surfaces is provided at least at said two faces.
  • the optical treatment of some end surfaces of the visible part of the light guide means allows an exit passage of the light, visible to the driver and the passengers.
  • the treatment may be a roughening in the desired exit areas of the light.
  • said portion to insert said control button is hollow.
  • the cylindrical portion of the control knob is preferably hollow, with a wall of a defined thickness such that the light is effectively transmitted homogeneously to the annular portion of the light guide means, and according to the desired luminance.
  • the maximum thickness can be defined according to the properties of transmission and attenuation of light through the constituent material chosen for the insert part of the control button.
  • the thickness can therefore be of a thickness generally in a range between 0.8 and 1.2 mm, depending on the translucent material used, PC type, for example.
  • Figure 1 shows an exploded view of a control device mounted in a housing facade opening 20, according to the present invention.
  • the housing facade 20 is, in the embodiment shown, a portion of a control panel wall of a motor vehicle.
  • an opening 10 receives the control device according to the present invention.
  • the control knob is rotatable and the opening 10 is circular.
  • the front is made of standard plastic material, such as ABS or ABS / PC.
  • the control device comprises a control button 60, a light guide ring 40, an inner part 80, and a light source 100 on an electronic board 102.
  • the light source 100 is an LED in the illustrated embodiment, but any other light source is conceivable.
  • the control knob 60 includes an insert portion 70 in the opening 10 of the housing face 20, and an accessible portion 65 by a driver or a passenger to allow the adjustment of a given parameter by a passenger.
  • the insert portion 70 in the opening 10 of the housing face 20 is cylindrical in shape. It comprises a system of clips 72 for securing to the inner part 80.
  • the portion 65 of the control button is intended to protrude from the facade to be accessible by a driver or a passenger to allow the adjustment of a given parameter, for example a temperature setpoint and / or air flow of a heating, ventilation and / or air conditioning system.
  • the portion 65 of the control button has gripping means 67 to allow the user a good grip.
  • it includes visual symbols 69 indicating the nature of the setpoint parameter adjustable by the control button, which can thus be backlit by the light source 100.
  • the light guide ring 40 comprises an annular portion 43 with a visible portion 45.
  • a fastening system 42 in this case clips, makes it possible to secure it to the housing facade 20.
  • the light guide ring 40 is injected in transparent or translucent plastic material standard, of the desired color.
  • the inner part 80 is an axis according to a preferred embodiment, when the control knob is a rotary knob.
  • the inner part 80 may have a substantially parallelepiped shape. It comprises an internal part with shoulders 82 on which the insert part 70 of the control knob can be fixed by means of the clips 72.
  • the inner part 80 is injected in thermoplastic material, for example polyoxymethylene, chosen for its friction properties, and in particular to be compatible with the material constituting the housing front 20, supporting the rotary movement, and thus ensure better sliding during some movement.
  • thermoplastic material for example polyoxymethylene
  • the outer surface 85 of the inner part 80 includes notches 84, which allow to switch a switch, to ensure the setting of the setpoint of the defined parameter. Otherwise, the notches 84 of the outer surface 85 can actuate a mechanical sensor, or any other position detection device, potentiometer or sensor, in particular to adjust a setpoint of a given parameter, and for example a setpoint of temperature and / or air flow powered by a heater, ventilation and / or air conditioning.
  • FIG. 2 represents the assembled control device, inserted into the opening 10 of the housing facade 20.
  • the light guide ring 40 is embedded in the opening 10 of the housing front 20, and the inner part 80 is wedged in the facade 20 by a notch system 88 of the facade.
  • the insert portion 70 of the control knob is inserted in the opening 10 of the frontage 20, and secured to the inner part 80 by the clips 72.
  • the rotary control knob 60 is thus integral in rotation with the inner part 80, itself rotatable and guided on the housing front 20.
  • the light source 100 centrally located relative to the axis of the control button 60 on the electronic board 102, emits light into the hollow insert portion 70 of the control button 60, which light is then transmitted to through the wall of the insert portion 70 to the light guide ring 40 and the visible portion 45 of the light guide ring.
  • the light guide means thus comprise the light guide ring 40, the visible portion 45, and at least partially the insert portion 70 of the control button, at least at the zone 44 of cooperation between said insert portion 70 and the light guide ring 40.
  • the faces in correspondence of said insert portion 70 of the control button and said light guide ring 40 at said zone 44 of cooperation can be optically treated.
  • the surface of the visible portion 45 of the light guide ring is optically treated, and here frosted, for better transmission of light.
  • the control button 60 can be injected in plastic material preferably translucent of the desired color chosen for its optical properties.
  • plastic material preferably translucent of the desired color chosen for its optical properties.
  • the use of a translucent material makes it possible to diffuse the light emitted by the light source 100 through the wall towards the light guide ring 40.
  • a transparent material is also conceivable, but the translucency properties allow a better homogeneity of light.
  • the insert portion 70 of the control knob is hollow, with a wall of a defined thickness such that the light is effectively transmitted homogeneously to the light guide ring 40 of the light guide means.
  • the thickness of the portion to be inserted 70 is between 0.8 and 1.2 mm.
  • the various constituent elements of the control device are dimensioned so that the different parts of the control device have optimized mechanical and optical operation.
  • the outer diameter of the portion 65 of the control knob can be adapted to the inside diameter of the visible portion 45 of the light guide ring 40.
  • the outer diameter of the light guide ring 40 is adapted to the size and shape of the housing face 20 of the control device, while the inner diameter of said light guide ring 40 can be adapted to receive the insert part. 70 of the control button.
  • the light guide ring 40 is embedded in the opening 10 of the housing front 20 and the rotary control knob 60 is integral in rotation with the inner portion 80, itself guided on the housing facade 20.
  • light source 100 centrally on the electronic board 102, emits light into the hollow insert portion 70 of the control knob 60, which light is then transmitted through the wall of the insert portion 70 to the ring light guide 40 and the visible portion 45 of the light guide means.
  • the light source 100 thus makes it possible to backlight the light ring 40 surrounding the control button 60 as well as the visual symbols 69 inscribed on the accessible portion 65 of the control button 60.
  • a driver / passenger decides to modify a setpoint parameter, such as the temperature setpoint of a ventilation system, it actuates the control knob 60 mobile in rotation.
  • the inner part 80 and the control knob 60 being secured in rotation, the rotation of the knob 60 is guided by the inner part 80, comprising at least one rotational bearing.
  • the ribs 84 on the outer surface 85 actuate a switch and may allow effective adjustment of the setpoint.
  • the invention provides a control device for mounting in an opening of a housing facade comprising a light source, light guide means conveying light from the light source to a visible portion of the light guide means. and a movable control button having a portion to be inserted into said opening, at least a portion of said insert portion at least partially constituting said light guide means.
  • This device has the advantage that only one light source can be used, positioned inside the insert part of the control button, and not on the periphery, and the focus of the backlight uniformly on the visible part of the light guide means can be performed in a single phase, which offers significant savings in time, cost and productivity.
  • an additional inner part which can form at least one bearing for guiding movement, to guide the movement of the control button, regardless of the length of the guide envisaged.
  • control device has been shown as a rotary type button for automotive applications, other embodiments and applications, such as a sliding control button, are also contemplated.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP06116735.9A 2005-08-11 2006-07-06 Hintergrundbeleuchtung eines Betätigungsknopfs mit Lichtleiter Active EP1752853B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0508509A FR2889767B1 (fr) 2005-08-11 2005-08-11 Retro eclairage d'un bouton de commande avec guide lumiere.

Publications (2)

Publication Number Publication Date
EP1752853A1 true EP1752853A1 (de) 2007-02-14
EP1752853B1 EP1752853B1 (de) 2016-04-13

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EP06116735.9A Active EP1752853B1 (de) 2005-08-11 2006-07-06 Hintergrundbeleuchtung eines Betätigungsknopfs mit Lichtleiter

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EP (1) EP1752853B1 (de)
ES (1) ES2582188T3 (de)
FR (1) FR2889767B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2151806A1 (de) * 2008-08-05 2010-02-10 Alberici S.p.A. Hintergrundbeleuchteter Druckknopf
DE102008042472A1 (de) 2008-09-30 2010-04-01 BSH Bosch und Siemens Hausgeräte GmbH Leuchtring
EP2211249A2 (de) 2009-01-22 2010-07-28 E.G.O. ELEKTRO-GERÄTEBAU GmbH Bedieneinrichtung für ein Elektrogerät und Bedienblende
FR2941543A1 (fr) * 2009-01-29 2010-07-30 Peugeot Citroen Automobiles Sa Manette de commande de fonction(s), a element(s) annulaire(s) de decouplage a faible coefficient de friction
CN103034279A (zh) * 2011-10-06 2013-04-10 现代摩比斯株式会社 多媒体设备的按钮结构体
CN106094974A (zh) * 2016-08-10 2016-11-09 苏龙 一种多功能控制旋钮
CN113613932A (zh) * 2019-03-22 2021-11-05 标致雪铁龙汽车股份有限公司 机动车辆的包括透明壁的内部照明装置，透明壁配备有用于使自身定位在构造成光导的装置上的定位构件

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014222200B3 (de) * 2014-10-30 2016-01-28 Behr-Hella Thermocontrol Gmbh Bedienvorrichtung insbesondere für eine Fahrzeugkomponente

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917367A1 (de) * 1979-04-05 1980-10-16 Feller Ag Tastschalter mit leuchtring
DE8702558U1 (de) * 1987-02-19 1987-06-25 Diemer & Fastenrath, 58511 Lüdenscheid Schalter mit einem Drehknopf
US4930048A (en) * 1987-09-26 1990-05-29 Toyoda Gosei Co., Ltd. Air-conditioning control box
DE19539081A1 (de) * 1995-10-20 1997-04-24 Preh Elektro Feinmechanik Bedienmodul für elektrische Haushaltsgeräte
EP0933792A1 (de) * 1996-10-15 1999-08-04 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Betätigungs vorrichtung mit ziffer blatt
US6224221B1 (en) * 1998-07-30 2001-05-01 Preh-Werke Gmbh & Co. Kg Illuminated rotatable knob
US20030112160A1 (en) * 2001-12-14 2003-06-19 I Hsiung Rotary knob structure
US6685327B2 (en) 2000-06-09 2004-02-03 Siemens Ag Arrangement for illuminating the adjusting knob of an input unit by means of transmitted light

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917367A1 (de) * 1979-04-05 1980-10-16 Feller Ag Tastschalter mit leuchtring
DE8702558U1 (de) * 1987-02-19 1987-06-25 Diemer & Fastenrath, 58511 Lüdenscheid Schalter mit einem Drehknopf
US4930048A (en) * 1987-09-26 1990-05-29 Toyoda Gosei Co., Ltd. Air-conditioning control box
DE19539081A1 (de) * 1995-10-20 1997-04-24 Preh Elektro Feinmechanik Bedienmodul für elektrische Haushaltsgeräte
EP0933792A1 (de) * 1996-10-15 1999-08-04 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Betätigungs vorrichtung mit ziffer blatt
US6224221B1 (en) * 1998-07-30 2001-05-01 Preh-Werke Gmbh & Co. Kg Illuminated rotatable knob
US6685327B2 (en) 2000-06-09 2004-02-03 Siemens Ag Arrangement for illuminating the adjusting knob of an input unit by means of transmitted light
US20030112160A1 (en) * 2001-12-14 2003-06-19 I Hsiung Rotary knob structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2151806A1 (de) * 2008-08-05 2010-02-10 Alberici S.p.A. Hintergrundbeleuchteter Druckknopf
DE102008042472A1 (de) 2008-09-30 2010-04-01 BSH Bosch und Siemens Hausgeräte GmbH Leuchtring
EP2211249A2 (de) 2009-01-22 2010-07-28 E.G.O. ELEKTRO-GERÄTEBAU GmbH Bedieneinrichtung für ein Elektrogerät und Bedienblende
EP2211249A3 (de) * 2009-01-22 2010-08-18 E.G.O. ELEKTRO-GERÄTEBAU GmbH Bedieneinrichtung für ein Elektrogerät und Bedienblende
US7943878B2 (en) 2009-01-22 2011-05-17 E.G.O. Elektro-Geraetebau Gmbh Operating device for an electrical appliance and control panel
FR2941543A1 (fr) * 2009-01-29 2010-07-30 Peugeot Citroen Automobiles Sa Manette de commande de fonction(s), a element(s) annulaire(s) de decouplage a faible coefficient de friction
CN103034279A (zh) * 2011-10-06 2013-04-10 现代摩比斯株式会社 多媒体设备的按钮结构体
CN106094974A (zh) * 2016-08-10 2016-11-09 苏龙 一种多功能控制旋钮
CN113613932A (zh) * 2019-03-22 2021-11-05 标致雪铁龙汽车股份有限公司 机动车辆的包括透明壁的内部照明装置，透明壁配备有用于使自身定位在构造成光导的装置上的定位构件

Also Published As

Publication number Publication date
FR2889767A1 (fr) 2007-02-16
FR2889767B1 (fr) 2011-05-13
EP1752853B1 (de) 2016-04-13
ES2582188T3 (es) 2016-09-09

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