EP2339602A1 - Dispositif de commutation et guide optique - Google Patents

Dispositif de commutation et guide optique Download PDF

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Publication number
EP2339602A1
EP2339602A1 EP09175227A EP09175227A EP2339602A1 EP 2339602 A1 EP2339602 A1 EP 2339602A1 EP 09175227 A EP09175227 A EP 09175227A EP 09175227 A EP09175227 A EP 09175227A EP 2339602 A1 EP2339602 A1 EP 2339602A1
Authority
EP
European Patent Office
Prior art keywords
optical waveguide
switching device
housing cover
air gap
button
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
EP09175227A
Other languages
German (de)
English (en)
Other versions
EP2339602B1 (fr
Inventor
Ralf Siegler
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.)
Rafi GmbH and Co KG
Original Assignee
Rafi GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rafi GmbH and Co KG filed Critical Rafi GmbH and Co KG
Priority to EP09175227.9A priority Critical patent/EP2339602B1/fr
Publication of EP2339602A1 publication Critical patent/EP2339602A1/fr
Application granted granted Critical
Publication of EP2339602B1 publication Critical patent/EP2339602B1/fr
Active 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
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/06—Reflector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H01H2219/0622—Light conductor only an illuminated ring around keys

Definitions

  • the invention relates to a switching device according to the preamble of claim 1 and to an optical waveguide for use in such a switching device.
  • the switch panel consists of at least one such switching device whose inserted into the opening of the housing cover button is axially movable deliverable to a switch contact.
  • an annular sleeve whose inner contour rests against the outer contour of the probe and consequently supports it laterally.
  • the sleeve is made of a material through which no light waves penetrate.
  • an annular air gap between the outside of the sleeve and the housing cover is provided.
  • the light waves emitted by the LED should be bundled and directed in the direction of the housing cover. This is accomplished by providing an outer ferrule such that the respective LED is disposed between the outer and inner ferrules. Accordingly, the annular air gap, in which the light waves extend in the direction of the housing cover, arises between the two sleeves.
  • the outside of the housing cover is covered by a film through which the two sleeves and the air gap between them and the button are closed.
  • a disadvantage of this embodiment has been found that the light waves emitted by the LEDs illuminate the air gap in an inhomogeneous manner, since the light waves emit punctiform in the direction of the housing cover. Even through the film, a homogeneous illumination of the existing air-annular gap can not be achieved, since the refraction of the light waves through the thin-walled film is not sufficient to break the punctual illumination of the respective LED evenly.
  • a plurality of light sources in particular LEDs, to be mounted on the circuit board.
  • this increases energy consumption;
  • the respective bulbs generate heat through which the individual components can be damaged, as they warp, for example due to increased and longer heat retention periods.
  • a simple and inexpensive to produce switching device should be provided.
  • the light waveguide used in the air gap at the same time as a guide member for the probe in its axial feed movements as well as Light mixer for the light waves emitted by the bulbs are assigned to the optical waveguide two functions, so that on the one hand components that are necessary in the cited prior art to form the air gap, can be saved and on the other reduced by reducing the components of the Required space, so that several such switching devices can be installed side by side on the same surface of a housing cover.
  • the optical waveguide is shielded to the outside by a reflection aperture or a color coating, so that the light waves emitted by the light sources are reflected in the direction of the housing cover. Due to the structural design of the optical waveguide, in particular when refractive particles are used in this light waves, the punctual light waves in the region of the respective bulbs are further broken, so that a homogeneous light field is formed around the probe and from the outside is no longer recognizable, of which used Bulb the respective light wave was emitted. Through these measures, the number of bulbs can be reduced to a minimum. This reduces the necessary energy consumption. Furthermore, the heat radiation of the lamps is reduced, whereby the life of the entire switching device is increased.
  • a switching device 1 for generating one or more switching signals refer.
  • these switching devices 1 are installed in a housing cover 2 and together form a switching field through which an electrically operated device, such as a coffee machine or a medical examination device, can be operated. It is necessary for the individual switching devices 1 to be illuminated in order to be able to recognize, for example, their operating state by corresponding coloring. Also, the respective switching device 1 can be illuminated by an intelligent control device in order to inform the user that the respectively illuminated switching device 1 is now to be actuated in the corresponding sequence.
  • the switching device 1 consists essentially of a T-shaped button 4, which is held axially movably guided in the manner of a plunger in the housing cover 2.
  • the button 4 is flush with the housing cover 2 from.
  • the outside of the housing cover 2 is covered by a thin-walled elastically deformable film 10.
  • the button 4 is attached to the inside of the film 10, so that upon actuation of the button 4, the film 10 tracks the movement of the button 4.
  • a printed circuit board 5 is mounted on the one hand, one or more lamps 6, preferably an LED light and the other an electrically operated switching contact 8 is arranged.
  • the switching contact 8 can be constructed such that a restoring force acts on the button 4 by a metallic snap disc to move it back to the starting position when the manually applied actuating force no longer acts on the button 4.
  • annular air gap 7 is provided between the outer periphery of the button 4 and the opening 3 of the housing cover 2.
  • the mounted on the circuit board 5 bulbs 6 emit the emitted light waves in the annular air gap 7.
  • the air gap 7 thus extends from the Leuchtmittein 6 to the outside of the housing cover 2.
  • the air gap 7 is therefore aligned parallel to the longitudinal axis 9 of the probe 4.
  • an optical waveguide 11 which is supported on the housing cover 2 and can be fixed or detachably mounted on this and flush with the housing cover 2 to the outside.
  • a reflection aperture 13 is mounted on the outside of the optical waveguide 11. This can be for example a color coating or a shielding sleeve 14, as in particular the FIG. 2 can be seen.
  • the surface of the printed circuit board 5 is also provided with a reflection aperture 13, so that the light waves emitted by the light sources 6 are reflected by the reflection apertures 13 and extend exclusively through the channel formed by the optical waveguide 11 in the direction of the housing cover 2.
  • each of the light sources 6 generates punctiform light circles which are visible on the outside of the optical waveguide 11 in the region of the housing cover 2 are on the shielding sleeve 14, as in particular Figures 2 and 4a to 4c can be removed, a reflector 21 attached.
  • the reflector 21 may be configured rectangular or roof-shaped and mounted in alignment with the horizontal or from this inclined to the shielding sleeve 14.
  • the reflector 21 serves to distribute the light waves emitted by the illuminant 6, so that they do not impinge directly on the optical waveguide 11.
  • a recess 22 are incorporated in the free end face 18 of the optical waveguide 11 in the region of the lamp 6.
  • the air gap 17 is provided to ensure that the light waves pass through several different media to break the light waves upon passage of the media. This is in the right half of the FIG. 2 shown. By this measure it is ensured that the optical waveguide 11 receives light waves in its entire peripheral surface and forwards them in the direction of the housing cover 2.
  • the light waves emitted by the light means 6 are thus homogenized refraction and reflection.
  • a multiplicity of particles 12 are integrated in the optical waveguide 11, through which the light waves are broken. Consequently, the outside of the optical waveguide 11 is uniformly illuminated in the region of the housing cover 2.
  • the upper end face 19 of the optical waveguide 11 is equipped with different planes 20 ', 20 ", whereby the plane 20" facing the pushbutton 4 runs at the same height level as the outside of the housing cover 2 and thus closes flush with it.
  • the plane 20 ' is arranged below the housing cover 2.
  • These different height levels of the upper end face 19 of the optical waveguide 11 cause that in this area the emerging from the optical waveguide 11 light waves are refracted again to improve the homogeneous radiation between the key 4 and the housing cover 2.
  • a groove or slit may be incorporated, so that the optical waveguide 11 is designed in part U-shaped in cross-section and therefore an air gap for refraction of the light waves is formed.
  • the slot extends from the lower end face 18 to slightly below the housing cover 2 and the plane 20 'and extends parallel to the longitudinal axis thirteenth
  • the film 10 is arranged in alignment with the optical waveguide 11 and formed in this region 23 transparent or at least semitransparent, so that the light waves penetrate through this region 23. Laterally next to the optical waveguide 11, the film 10 is coated in a region indicated by the reference numeral 24, so that no light waves penetrate this region 24 of the film 10.
  • FIG. 2 can be seen that the lower end face 18 of the optical waveguide 11 is formed trough-shaped and formed by this encapsulation of the bulb 6.
  • the trough 22 can be replaced by the reflector 21, as shown in the FIGS. 4a to 4c is shown.
  • FIG. 1 It is shown that between the surface of the bulb 6 and the lower end face 18 of the optical waveguide 11, an air gap 17 is provided to increase the number of medium transitions that have to undergo the light waves. This causes a refraction of the light waves and this results in a homogeneous illumination of the optical waveguide 11.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
EP09175227.9A 2009-11-06 2009-11-06 Dispositif de commutation comprenant un reflecteur Active EP2339602B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09175227.9A EP2339602B1 (fr) 2009-11-06 2009-11-06 Dispositif de commutation comprenant un reflecteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09175227.9A EP2339602B1 (fr) 2009-11-06 2009-11-06 Dispositif de commutation comprenant un reflecteur

Publications (2)

Publication Number Publication Date
EP2339602A1 true EP2339602A1 (fr) 2011-06-29
EP2339602B1 EP2339602B1 (fr) 2013-05-22

Family

ID=41790644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09175227.9A Active EP2339602B1 (fr) 2009-11-06 2009-11-06 Dispositif de commutation comprenant un reflecteur

Country Status (1)

Country Link
EP (1) EP2339602B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013015450A1 (fr) * 2011-07-27 2013-01-31 Yazaki Corporation Structure d'éclairage de commutateur
WO2013180015A1 (fr) * 2012-05-31 2013-12-05 Yazaki Corporation Dispositif de commutation d'affichage d'éclairage
CN106024464A (zh) * 2016-07-04 2016-10-12 宁波方太厨具有限公司 一种触摸开关
CN112635219A (zh) * 2020-12-29 2021-04-09 广东虹勤通讯技术有限公司 按键模组、电子设备及加工方法
US11449153B1 (en) * 2022-04-21 2022-09-20 Muted LLC Computer peripheral devices and methods of using the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690502A1 (fr) 1992-04-22 1993-10-29 Otis Elevator Co Bouton lumineux à flux de lumière canalisé et diffusé.
EP0749136A2 (fr) * 1995-06-14 1996-12-18 Elektro-Apparatebau Olten AG Commutateur pour ouvrir une porte
EP0976972A2 (fr) * 1998-07-30 2000-02-02 Preh-Werke GmbH & Co. KG Bouton tournant pour dispositif de commande
EP1389788A1 (fr) * 2002-08-13 2004-02-18 Vestel Elektronik Sanayi ve Ticaret A.S. Indicateur de fonction pour la visualisation de l'état d'un dispositif
EP1685579A1 (fr) * 2003-11-20 2006-08-02 Bernecker & Rainer Industrie-Elektronik Gesellschaft m.b.H. Panneau de distribution comprenant au moins un commutateur
US20080037277A1 (en) * 2006-08-09 2008-02-14 Kabushiki Kaisha Tokai Rika Denki Seisakusho Operation Device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235295B (en) * 1989-08-24 1993-09-08 Technophone Ltd Light guide

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690502A1 (fr) 1992-04-22 1993-10-29 Otis Elevator Co Bouton lumineux à flux de lumière canalisé et diffusé.
EP0749136A2 (fr) * 1995-06-14 1996-12-18 Elektro-Apparatebau Olten AG Commutateur pour ouvrir une porte
EP0976972A2 (fr) * 1998-07-30 2000-02-02 Preh-Werke GmbH & Co. KG Bouton tournant pour dispositif de commande
EP1389788A1 (fr) * 2002-08-13 2004-02-18 Vestel Elektronik Sanayi ve Ticaret A.S. Indicateur de fonction pour la visualisation de l'état d'un dispositif
EP1685579A1 (fr) * 2003-11-20 2006-08-02 Bernecker & Rainer Industrie-Elektronik Gesellschaft m.b.H. Panneau de distribution comprenant au moins un commutateur
EP1685579B1 (fr) 2003-11-20 2007-06-06 Bernecker & Rainer Industrie-Elektronik Gesellschaft m.b.H. Panneau de distribution comprenant au moins un commutateur
US20080037277A1 (en) * 2006-08-09 2008-02-14 Kabushiki Kaisha Tokai Rika Denki Seisakusho Operation Device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013015450A1 (fr) * 2011-07-27 2013-01-31 Yazaki Corporation Structure d'éclairage de commutateur
WO2013180015A1 (fr) * 2012-05-31 2013-12-05 Yazaki Corporation Dispositif de commutation d'affichage d'éclairage
US9484165B2 (en) 2012-05-31 2016-11-01 Yazaki Corporation Illumination display switching device
CN106024464A (zh) * 2016-07-04 2016-10-12 宁波方太厨具有限公司 一种触摸开关
CN112635219A (zh) * 2020-12-29 2021-04-09 广东虹勤通讯技术有限公司 按键模组、电子设备及加工方法
US11449153B1 (en) * 2022-04-21 2022-09-20 Muted LLC Computer peripheral devices and methods of using the same
US11880512B1 (en) * 2022-04-21 2024-01-23 Muted LLC Computer peripheral devices and methods of using the same

Also Published As

Publication number Publication date
EP2339602B1 (fr) 2013-05-22

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