EP0409342A1 - Befestigungssystem für eine Schwenktaste und dieses System verwendendes Gerät - Google Patents

Befestigungssystem für eine Schwenktaste und dieses System verwendendes Gerät Download PDF

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Publication number
EP0409342A1
EP0409342A1 EP90201928A EP90201928A EP0409342A1 EP 0409342 A1 EP0409342 A1 EP 0409342A1 EP 90201928 A EP90201928 A EP 90201928A EP 90201928 A EP90201928 A EP 90201928A EP 0409342 A1 EP0409342 A1 EP 0409342A1
Authority
EP
European Patent Office
Prior art keywords
key
support
positioning
rest position
fastening system
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
EP90201928A
Other languages
English (en)
French (fr)
Other versions
EP0409342B1 (de
Inventor
Pierre Societe Civile S.P.I.D. Guilleminot
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.)
Philips Electronique Gran Public
Koninklijke Philips NV
Original Assignee
Philips Electronique Gran Public
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Electronique Gran Public, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Electronique Gran Public
Publication of EP0409342A1 publication Critical patent/EP0409342A1/de
Application granted granted Critical
Publication of EP0409342B1 publication Critical patent/EP0409342B1/de
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
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H01H2221/044—Elastic part on actuator or casing

Definitions

  • the present invention relates to a system for fixing a control key on a support, said key being substantially flat, and having a freedom of movement of the piano type with a rest position and a control position, comprising means positioning to position the key on the support in the rest position, and return means for, after a command operation by pressing the key, recall the key in the rest position.
  • Such control keys are used in audio and video devices, in particular car radios to control the various adjustments: tone, sounds, etc .; such a button acts, for example, on a switch which delivers an impulse each time the button is pressed.
  • the button fixing system is subject to functional and aesthetic constraints, in particular: large number of operations, positioning accuracy relative to the aesthetic facade, possibility of lighting from inside the device, absence of mechanical noise in vibrations.
  • Such keys are often multiple and installed side by side with mounting rods and return springs which is complicated and expensive.
  • the present invention aims to eliminate these drawbacks.
  • a fixing system in accordance with the preamble is particularly remarkable in that the said support is provided with a flat T-shaped opening which crosses its thickness, in that the said key is provided with 3 contiguous strips, located in the same plane perpendicular to the plane of the key and made of an elastic material, the central strip being provided with a spoiler located at a distance from the plane of the key at least equal to the thickness of the support, the assembly being arranged so that after elastic penetration of the central strip in the leg of the T and, simultaneously, of the two lateral strips in the wings of the T, on the one hand the spoiler snaps onto the thickness of the support and thus constitute the said positioning means, on the other hand the two lateral lamellae bear in the wings of the T to constitute the said return means.
  • Such a system based on the principle of the elastic hinge is very simple, inexpensive, easy to assemble and disassemble.
  • it includes constraint means for putting said elastic strips in tension so that the positioning in the rest position does not include any play.
  • said stress means are constituted by an additional thickness disposed on the central strip.
  • the two lateral strips are each provided with a stop for the deep positioning of the key.
  • said button further comprises a lower positioning tab made of elastic material perpendicular to the plane of the button, and provided with a snap-on spoiler for, by cooperating with a support opening, specifying the determination of the said rest position.
  • the key is, in a way, subjected to a second preload which ensures perfect reproducibility of the rest position; this is essential in the general case where the key is a plastic part molded in a mold with several cavities and when several keys are mounted side by side.
  • the support SU has, throughout its thickness, an opening ET in the form of a flattened 'T'.
  • the TO key is operated by pressure exerted on the flat surface SP; this surface can obviously have other aspects than that shown.
  • the key is provided with 3 strips L1, LC, L2 substantially perpendicular to the flat surface and having a thickness thin enough for the strips to be elastic.
  • the thickness of the wings of the support T is slightly greater than the thickness of the side blades L1 and L2 so that they can penetrate it with the minimum of play; to facilitate the introduction of the key, provision may be made for slightly bevelling the end of the strips L1, L2 both in thickness and in width.
  • the central strip LC is provided at its free end with a spoiler BE arranged to snap onto the support SU; for this purpose it is not wider than the leg of the T so that, during assembly of the system, the central strip folds down to pass the spoiler BE then returns to place for snap-fastening.
  • the side slats are here provided with BUT side stops which prevent excessive introduction of the TO key into the support SU, thus the key is well positioned in depth by the spoiler BE and the BUT stops; other arrangements of the stops are also possible.
  • the central strip LC has a slight excess thickness SEP next to the spoiler; after assembly, this extra thickness slightly spreads the central strip LC from the upper wall of the 'T' which has the effect of prestressing the elastic strips.
  • SEP the thickness of the central strip LC
  • Figure 2 shows an actual mounting example while Figure 1 rather shows the principle of operation.
  • an FA facade is shown; it may happen that the facade and the support are one and the same piece without modifying the principle of the positioning system according to the invention.
  • the TO key in Figure 2 has an external appearance - rounded edges with skirt - more 'commercial' than that in Figure 1, but functionally it is the same.
  • the central strip LC with its spoiler BE is snapped into the opening AND of the support SU.
  • the side slats are not visible in Figure 2.
  • the position shown is the rest position.
  • the TEC control pin When the key is pressed, the TEC control pin actuates the SU switch. They are here symbolically represented to show that it only takes a short stroke to perform the function of the piano-type movement.
  • the elastic strips constitute the means for returning the control position to the rest position.
  • the TO key in FIG. 2 also has a lower tab PI which, similar to the spoiler BE, snaps into the support SU.
  • the role of the lug PI is only to precisely fix the rest position because it is arranged to constrain, without excess, the elastic strips.
  • the position of the TO key with respect to the FA facade could be different from one key to another due to manufacturing dispersions, in particular with multi-cavity molds.
  • such a fastening system has been produced with a plastic button 15x15 mm with strips whose thickness is 0.7 mm, the width of 2.5 mm and the length of 6 mm.
  • the fixing system according to the invention occupies little space and, therefore, it is possible to light the button from the rear with, for example, an AM bulb.
  • the area of the support marked LU prefferably be empty, or translucent, for the light emitted by the bulb AM to illuminate the key from the rear to reveal an inscription or a drawing.

Landscapes

  • Push-Button Switches (AREA)
  • Electrophonic Musical Instruments (AREA)
EP90201928A 1989-07-21 1990-07-16 Befestigungssystem für eine Schwenktaste und dieses System verwendendes Gerät Expired - Lifetime EP0409342B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8909884 1989-07-21
FR8909884A FR2650117B1 (fr) 1989-07-21 1989-07-21 Systeme de fixation d'une touche a mouvement piano et appareil l'utilisant

Publications (2)

Publication Number Publication Date
EP0409342A1 true EP0409342A1 (de) 1991-01-23
EP0409342B1 EP0409342B1 (de) 1995-05-24

Family

ID=9384035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90201928A Expired - Lifetime EP0409342B1 (de) 1989-07-21 1990-07-16 Befestigungssystem für eine Schwenktaste und dieses System verwendendes Gerät

Country Status (5)

Country Link
US (1) US5087802A (de)
EP (1) EP0409342B1 (de)
JP (1) JPH0359917A (de)
DE (1) DE69019618T2 (de)
FR (1) FR2650117B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2670949A1 (fr) * 1990-12-21 1992-06-26 Philips Electro Grand Public Systeme de fixation d'une touche a mouvement piano et appareil l'utilisant.

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9001186U1 (de) * 1990-02-02 1990-05-17 S.W.E.C. Schmitt-Walter Engineering Consult, 82008 Unterhaching Leuchttastschalter
US5844203A (en) * 1995-10-06 1998-12-01 Black & Decker Inc. Combined switch actuator and signal light transmitter for an iron
US20040042623A1 (en) * 2002-08-28 2004-03-04 Thomas Allan Zapalski Modular bezel design for an automotive entertainment system
US6933454B2 (en) * 2003-09-19 2005-08-23 Matsushita Electric Industrial Co., Ltd. Switching apparatus and vehicle-mounted electronic apparatus having the switching apparatus assembled therein
JP2006210191A (ja) * 2005-01-28 2006-08-10 Orion Denki Kk 操作ボタンを備えた電子機器
US7320146B2 (en) * 2005-05-12 2008-01-22 Sloan Valve Company Sensor plate for electronic flushometer
US8222549B2 (en) * 2006-03-09 2012-07-17 Lear Corporation Input control module with adaptive actuators
JP5842527B2 (ja) * 2011-10-14 2016-01-13 オムロン株式会社 押ボタンスイッチおよびこれを用いた電子機器
CN107154253A (zh) * 2017-06-29 2017-09-12 得理乐器(珠海)有限公司 用于键盘乐器的防止机震的按钮机构
CN109936760B (zh) * 2019-03-29 2021-07-09 深圳市九洲电器有限公司 一种机顶盒

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2148804B1 (de) * 1971-09-30 1973-01-25 Grundig Emv Drucktastenschalter, insbesondere mehrfach-drucktastenschalter
DE7624166U1 (de) * 1976-07-31 1977-01-27 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Druckschalter
US4387282A (en) * 1981-03-06 1983-06-07 Motorola Inc. Electrical switch assembly
US4689455A (en) * 1985-01-25 1987-08-25 Matsushita Electric Industry Co., Ltd. Snap fitted push-button switch actuator assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800104A (en) * 1972-11-13 1974-03-26 Becton Dickinson Co Low profile keyboard switch assembly with snap action cantilever contact
US4786766A (en) * 1985-08-26 1988-11-22 Canon Kabushiki Kaisha Keyboard apparatus
JP2517932Y2 (ja) * 1988-05-31 1996-11-20 三菱電機株式会社 スイツチ作動用押しボタン装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2148804B1 (de) * 1971-09-30 1973-01-25 Grundig Emv Drucktastenschalter, insbesondere mehrfach-drucktastenschalter
DE7624166U1 (de) * 1976-07-31 1977-01-27 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Druckschalter
US4387282A (en) * 1981-03-06 1983-06-07 Motorola Inc. Electrical switch assembly
US4689455A (en) * 1985-01-25 1987-08-25 Matsushita Electric Industry Co., Ltd. Snap fitted push-button switch actuator assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2670949A1 (fr) * 1990-12-21 1992-06-26 Philips Electro Grand Public Systeme de fixation d'une touche a mouvement piano et appareil l'utilisant.

Also Published As

Publication number Publication date
US5087802A (en) 1992-02-11
FR2650117B1 (fr) 1991-10-11
FR2650117A1 (fr) 1991-01-25
DE69019618T2 (de) 1996-01-18
DE69019618D1 (de) 1995-06-29
JPH0359917A (ja) 1991-03-14
EP0409342B1 (de) 1995-05-24

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