EP0965899A2 - Tableau frontal pour un appareil électronique - Google Patents

Tableau frontal pour un appareil électronique Download PDF

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Publication number
EP0965899A2
EP0965899A2 EP99110566A EP99110566A EP0965899A2 EP 0965899 A2 EP0965899 A2 EP 0965899A2 EP 99110566 A EP99110566 A EP 99110566A EP 99110566 A EP99110566 A EP 99110566A EP 0965899 A2 EP0965899 A2 EP 0965899A2
Authority
EP
European Patent Office
Prior art keywords
front unit
unit according
cap
membrane
front cap
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
EP99110566A
Other languages
German (de)
English (en)
Other versions
EP0965899A3 (fr
EP0965899B1 (fr
Inventor
Karsten Kirchhoff
Rudolf Arndt
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0965899A2 publication Critical patent/EP0965899A2/fr
Publication of EP0965899A3 publication Critical patent/EP0965899A3/fr
Application granted granted Critical
Publication of EP0965899B1 publication Critical patent/EP0965899B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H13/84—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 ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • H01H13/85—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 ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback characterised by tactile feedback features
    • 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
    • H01H13/705—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 construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0081—Apparatus 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/008—Part of substrate or membrane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/09—Flexible integral part of housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/044—Injection moulding
    • H01H2229/046—Multi-colour or double shot injection moulding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/026—Car

Definitions

  • the invention relates to a front unit for an electronic device, especially a car radio.
  • buttons that are in corresponding recesses of a front cap are arranged.
  • the key tappets operate switches which, like light-emitting diodes (LEDs), are used for back lighting the buttons are arranged on a circuit board behind the front cap.
  • LEDs light-emitting diodes
  • To generate the necessary restoring force is usually for everyone Key provided an associated return spring that the key according to their Actuation returns to its starting position.
  • the front unit according to the invention for an electronic device, in particular a Car radio with the features of claim 1 has the advantage that the Front cap together with the controls for operating the device as well the flexible membranes for resetting the controls integrally in one Piece can be made. This will reduce the effort and therefore the Cost of assembling the electronic device is significantly reduced. Further establishes the direct connection of the controls with the front cap a membrane without additional tuning a smooth movement of the Controls safe relative to the front cap. Another advantage is that The fact that an opaque membrane any stray light when Backlights of the controls of the front unit are effectively prevented. The completely closed front of the front unit also protects the electronics behind it from moisture or dirt.
  • the front cap and the Controls made of a polycarbonate and the membrane made of an elastomer manufactured. These materials enable an inexpensive and simple Manufacturing in two-component injection molding. To do this, either Tool with multiple nests used or the component is under Sprayed using two different tools.
  • the front cap and the controls are preferably crystal clear Makrolon. The optical properties and the finish of the front cap and the controls can then be determined by the paint used.
  • the underside of the Control elements with an electrically conductive paint.
  • the push button on the Printed circuit board can be dispensed with, which leads to a further considerable cost reduction leads in the manufacture of the front unit.
  • the front unit of an electronic device shown in Fig. 1 enables Operation of an associated electronic device (not shown), especially a car radio.
  • the front unit is usually located on the Front of the car radio and includes elements for controlling the various functions, such as station selection, start / stop playback of a Music cassette / CD etc.
  • Four exemplary control elements are shown in FIG. 1 keys 20 of different sizes are shown, but two or two are also possible Quadruple rockers that combine several functions in one control.
  • the shape of the buttons depends only on the desired design.
  • an elastic membrane 30 Between The keys 20 and the front cap 10 are each according to the invention an elastic membrane 30.
  • the elastic membrane 30 preferably fulfills several functions. On the one hand it allows a movement of the button 20 in a to the front cap 10 in essential vertical direction. On the other hand, it generates when actuated the button 20 the necessary restoring force to return it to the starting position to move back when it is relieved by the operator. Of the mechanical resistance when pressing the button 20 is determined by the shape of the Membrane 30 and the flexibility of the material used is determined. Prefers the membrane 30 is U-shaped in cross section (see FIG. 2). However, a bellows-like design is also conceivable. Since the membrane 30 encloses the key 20 all around, thereby moving the key 20 in the plane of the front cap 10 difficult, while the movement perpendicular to Level of the front cap 10 is facilitated.
  • the front cap 10, the keys 20 and the membrane 30 are preferred in the Injection molding process made from two components. This is done first in one Tool injected the front cap 10. Then the component is in a Another tool implemented and the individual keys injected. Should for Front cap 10 and buttons 20 of the same plastic are used the two steps can be done using a single tool, which has branches in the sprue, perform in one pass. In a further step is the membrane surrounding the keys between the buttons 20 and the front cap 10 are injected and the two buttons thereby integrally connected. The method shown can be used for further spraying operations expand if e.g. the symbols on the buttons or also graphic elements on the cover cap made of a different plastic should be considered as the surrounding material.
  • Polycarbonates are preferably used for the front cap 10 and the keys 20 and preferably used for the membrane 30 elastomers.
  • polycarbonate transparent Makrolon is preferred, so that the light transmission the components are only determined by the paint used, or targeted transparent areas can be set.
  • the front cap 10 and the buttons 20 first eroded, e.g. according to VDI level 24, before a white base coat is applied.
  • the color of the top coat depends on the respective Design requirements, but mostly a black top coat (e.g. available under the trade name RAL 9005).
  • RAL 9005 For illustration the symbols on the keys 20 and possibly the front cap 10 one Glaze (RAL 9002) applied. This ensures that at these points the light for backlighting of the controls can penetrate outwards.
  • connections 43 which are inserted into recesses 11 of the front panel, a Printed circuit board 40 attached, which is aligned parallel to the plane of the front cap 10 is.
  • the connections 42 shown only schematically in Fig. 3 can by Screw connections, rivets, pinning or the like can be realized.
  • On the circuit board 40 are preferably arranged pushbutton switches 41, which by the Backs of the keys 20 (the key tappets) are operated.
  • further light-emitting diodes 42 are provided for backlighting the keys 20, which also enable the device to be operated in the dark.
  • the key switches 41 and the light-emitting diodes 42 are preferably SMD components ("surface mounted device ") to enable a flat design of the front unit. Since the column between the buttons 20 and the front cap 10 by the Diaphragm 30 are covered, the light from the light emitting diodes 42 only falls through - Depending on the design - the translucent areas in the buttons provided for this purpose 20 and the front cap 10.
  • a lamp floods a light guide (block of transparent PC) with light that is coupled out behind the button symbols.
  • This Variant can be more economical depending on the number and location of the buttons.
  • Covering the column with membrane 30 also protects the circuit board 40 and the underlying electronics and mechanics of the device Moisture and pollution.
  • the front unit according to the invention can therefore especially used for radios that are often exposed to the weather are exposed, e.g. in motorcycles or vehicles with removable hood.
  • the Back of the keys 20 on the key plunger an electrically conductive layer of paint preferably applied by printing.
  • the button tappet When operating the button tappet and thus pressed the conductive lacquer layer against two contact surfaces, which are provided on the circuit board 40. This way it becomes immediate an electrical contact is established between the two contact surfaces. Since the Keys together with the circuit board itself the switching function take over, in this embodiment the push button switches 41 are omitted Another cost saving is an even flatter design entire front unit possible.
EP19990110566 1998-06-16 1999-06-01 Tableau frontal pour un appareil électronique Expired - Lifetime EP0965899B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19826851 1998-06-16
DE1998126851 DE19826851A1 (de) 1998-06-16 1998-06-16 Fronteinheit für ein elektronisches Gerät

Publications (3)

Publication Number Publication Date
EP0965899A2 true EP0965899A2 (fr) 1999-12-22
EP0965899A3 EP0965899A3 (fr) 2003-03-26
EP0965899B1 EP0965899B1 (fr) 2007-12-12

Family

ID=7871079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990110566 Expired - Lifetime EP0965899B1 (fr) 1998-06-16 1999-06-01 Tableau frontal pour un appareil électronique

Country Status (4)

Country Link
EP (1) EP0965899B1 (fr)
JP (1) JP2000057868A (fr)
DE (2) DE19826851A1 (fr)
ES (1) ES2296354T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10062554B4 (de) * 2000-12-15 2004-07-01 Robert Bosch Gmbh Verfahren zur Herstellung eines Bedienelements und Bedienelement
DE10224267A1 (de) * 2002-05-31 2003-12-11 Kostal Leopold Gmbh & Co Kg Lichtleitkörper
ITMI20070397A1 (it) * 2007-03-01 2008-09-02 Campagnolo Srl Dispositivo di comando per bicicletta e bicicletta che lo comprende

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831314A1 (de) 1988-09-15 1990-03-29 Hagenuk Telecom Gmbh Abdeckmatte fuer schaltungstraeger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2037079A (en) * 1978-12-05 1980-07-02 Standard Telephones Cables Ltd Modular keyboard
FR2523365B1 (fr) * 1982-03-11 1988-05-13 Mektron France Sa Clavier tactile monolithique et plat
FR2562320B1 (fr) * 1984-03-28 1988-03-25 Telemecanique Electrique Element modulaire constructif pour la realisation d'appareils de dialogue entre un operateur et un systeme de traitement d'informations
DE9106424U1 (fr) * 1990-07-19 1991-07-18 Silitek Corp., Taipeh/T'ai-Pei, Tw
US5311656A (en) * 1991-03-12 1994-05-17 Mitel Corporation Keypad method of manufacture
DE9302229U1 (fr) * 1993-02-16 1993-04-01 Silitek Corp., Taipeh/T'ai-Pei, Tw

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831314A1 (de) 1988-09-15 1990-03-29 Hagenuk Telecom Gmbh Abdeckmatte fuer schaltungstraeger

Also Published As

Publication number Publication date
DE19826851A1 (de) 1999-12-23
JP2000057868A (ja) 2000-02-25
EP0965899A3 (fr) 2003-03-26
DE59914575D1 (de) 2008-01-24
EP0965899B1 (fr) 2007-12-12
ES2296354T3 (es) 2008-04-16

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