EP0178452A2 - Bouton-poussoir - Google Patents

Bouton-poussoir Download PDF

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Publication number
EP0178452A2
EP0178452A2 EP85111394A EP85111394A EP0178452A2 EP 0178452 A2 EP0178452 A2 EP 0178452A2 EP 85111394 A EP85111394 A EP 85111394A EP 85111394 A EP85111394 A EP 85111394A EP 0178452 A2 EP0178452 A2 EP 0178452A2
Authority
EP
European Patent Office
Prior art keywords
push button
key body
button according
swivel bracket
slot
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.)
Withdrawn
Application number
EP85111394A
Other languages
German (de)
English (en)
Inventor
Bertold Stürmer
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.)
Preh GmbH
Original Assignee
Preh 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 Preh GmbH filed Critical Preh GmbH
Publication of EP0178452A2 publication Critical patent/EP0178452A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12—Push-buttons
    • H01H3/122—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/062—Damping vibrations

Definitions

  • the invention relates to a push button with a key body that is long compared to its width and on which in the area of its two ends on bearing pieces guided driver parts are arranged, on which the two legs of a swivel bracket are articulated, which when actuated on a key body end takes the other end, with a switch tappet which can be actuated by the key body being arranged between the bearing pieces.
  • Such keys are part of a keyboard, for example a typewriter or a data terminal processing plant. In the case of a typewriter keyboard, it is the "space bar”.
  • the object of the invention is to propose a pushbutton of the type mentioned at the outset, in which noise caused by the swivel bracket is suppressed.
  • the above object is achieved with a push button of the type mentioned in that the two driver parts consist of a soft elastic elastomer and have a slot for receiving one leg end of the swivel bracket and that the driver parts form the end stop when the button body is depressed.
  • the driver parts fulfill a double function. On the one hand, they absorb vibrations emanating from the swivel bracket so that they are not transmitted to the key body. On the other hand, they dampen the stroke of the key body. Both have a noise-reducing effect.
  • a further reduction in the development of noise can be achieved by foaming or foaming the key body. This suppresses its resonance properties.
  • Bearing pieces 2 are attached to a plate 1.
  • a switch housing 3 is attached to the plate 1 between the bearing pieces 2.
  • a long, narrow key body 4 is provided, which has receptacle sockets 5 in the region of its two ends.
  • a switching plunger 6 is provided between the receiving sockets 5, which engages in the switch housing 3 and acts on a switching membrane 7 arranged in the switch housing 3.
  • Stops 8 for lugs 9 of the switching plunger 6 are formed on the switch housing 3.
  • Each nose 9 has a slope 10 of approximately 45 °. This reduces the noise that occurs when the bevels 10 meet the stops 8.
  • a pin 11 of a driver part 12 is inserted non-positively.
  • the driver part 12 consists of a rubber-elastic elastomer, as is known for example under the trade name Lupolen.
  • the driver part 12 has a guide block 13 a side web 14 on which slots 15 are formed.
  • a strip 16 runs over the slots 15 on the side of the side web 14 opposite the guide block 13.
  • the underside of the driver part 12 faces the bearing piece 2 and serves as a stop surface 17.
  • the guide block 13 lies between two jaws 18 and 19 of the bearing piece 2.
  • the angled end 20 of a leg 21 of a swivel bracket 22 engages in one of the slots 15.
  • the height of the slot 15 corresponds to the diameter of the swivel bracket 22 bent from wire.
  • the swivel bracket 22 has between its leg 21 and the leg 23 provided at its other end a longitudinal web 24 which extends between the two bearing pieces 2.
  • a nose 25 is formed on each of the bearing pieces 2, which keeps the longitudinal web 24 radially free of play.
  • the right leg 23 (cf. FIG. 1) engages on the driver part 12 inserted into the right receptacle 5.
  • the cavity 26 of the key body 4 can be foamed.
  • the key body 4 can also be made entirely of a foamable material.
  • a bead 27 is formed on the side webs 14 to prevent the legs 21 and 23 from rubbing against the side webs 14 along their length.

Landscapes

  • Push-Button Switches (AREA)
EP85111394A 1984-09-14 1985-09-10 Bouton-poussoir Withdrawn EP0178452A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3433743 1984-09-14
DE19843433743 DE3433743A1 (de) 1984-09-14 1984-09-14 Drucktaste

Publications (1)

Publication Number Publication Date
EP0178452A2 true EP0178452A2 (fr) 1986-04-23

Family

ID=6245378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111394A Withdrawn EP0178452A2 (fr) 1984-09-14 1985-09-10 Bouton-poussoir

Country Status (3)

Country Link
EP (1) EP0178452A2 (fr)
JP (1) JPS61114421A (fr)
DE (1) DE3433743A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0267541A2 (fr) * 1986-11-12 1988-05-18 Smk Co., Ltd. Un clavier
FR2606930A1 (fr) * 1986-11-14 1988-05-20 Radiotechnique Compelec Clavier avec une barre d'espacement a palonnier
US4902862A (en) * 1987-06-13 1990-02-20 Preh Elektrofeinmechanische Werke Jakob Preh Nachf Gmbh & Co. Keyboard switch device for facilitating removal and replacement of push buttons

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2032507T3 (es) * 1987-08-24 1993-02-16 Siemens Nixdorf Informationssysteme Ag Tecla.
DE4220134C2 (de) * 1992-06-16 2000-05-25 Bally Wulff Automaten Gmbh Großflächige Kurzhubtaste
DE4306046C1 (de) * 1993-02-26 1994-04-21 Siemens Nixdorf Inf Syst Tastatur mit wenigstens einer Doppeltaste
US5669723A (en) * 1996-03-26 1997-09-23 Behavior Technical Computer Corp. Key assembly for computer keyboard
JP2002196282A (ja) * 2000-12-27 2002-07-12 Nec Tokin Corp 光アイソレータ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2404895A1 (de) * 1974-02-01 1975-08-14 Standard Elektrik Lorenz Ag Laengs mehrerer einzeltasten sich erstreckende breite taste
DE2522613C2 (de) * 1975-05-22 1978-06-22 Philips Patentverwaltung Aus thermoplasten bestehende teile fuer bedienungselemente von rundfunk- und fernsehempfaengern
DE3209913C2 (de) * 1982-03-18 1986-02-06 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt Drucktastenaggregat

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0267541A2 (fr) * 1986-11-12 1988-05-18 Smk Co., Ltd. Un clavier
EP0267541A3 (en) * 1986-11-12 1990-03-21 Smk Kk A keyboard
FR2606930A1 (fr) * 1986-11-14 1988-05-20 Radiotechnique Compelec Clavier avec une barre d'espacement a palonnier
EP0271124A1 (fr) * 1986-11-14 1988-06-15 Philips Composants Clavier avec une barre d'espacement à palonnier
US4902862A (en) * 1987-06-13 1990-02-20 Preh Elektrofeinmechanische Werke Jakob Preh Nachf Gmbh & Co. Keyboard switch device for facilitating removal and replacement of push buttons

Also Published As

Publication number Publication date
DE3433743A1 (de) 1986-03-27
JPS61114421A (ja) 1986-06-02

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19880401

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Inventor name: STUERMER, BERTOLD