EP0767474A2 - Push button device - Google Patents

Push button device Download PDF

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Publication number
EP0767474A2
EP0767474A2 EP96111576A EP96111576A EP0767474A2 EP 0767474 A2 EP0767474 A2 EP 0767474A2 EP 96111576 A EP96111576 A EP 96111576A EP 96111576 A EP96111576 A EP 96111576A EP 0767474 A2 EP0767474 A2 EP 0767474A2
Authority
EP
European Patent Office
Prior art keywords
guide
button
slots
parts
scissor
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
EP96111576A
Other languages
German (de)
French (fr)
Other versions
EP0767474B1 (en
EP0767474A3 (en
Inventor
Gerhard Hochgesang
Andrea Grosse
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 EP0767474A2 publication Critical patent/EP0767474A2/en
Publication of EP0767474A3 publication Critical patent/EP0767474A3/en
Application granted granted Critical
Publication of EP0767474B1 publication Critical patent/EP0767474B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/02Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12Push-buttons
    • H01H3/122Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
    • H01H3/125Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor using a scissor mechanism as stabiliser

Definitions

  • the invention relates to a push button device for a larger button covering several contacts according to the preamble of claim 1.
  • Such a pushbutton is disclosed in DE 33 29 698 A1, where it says: Individual pushbuttons of typing keyboards are significantly larger than the other keys and large in comparison to the contact to be actuated.
  • two scissors are provided as a guide device between the movable and the immovable button part. The two axes are aligned with each other. The four bearing points of the upper free ends of the arms enclose a rectangular area which largely coincides with the actuating area.
  • the invention is therefore based on the object of finding measures in a generic pushbutton device with which deformation of the guide slot is avoided and, in addition, easier assembly is possible.
  • Fig. 1 shows a view of a keypad 1 with 4 contacts 2, which is to be covered by a single large button 3, which has, for example, only one switch cam (not shown).
  • a contact 2 can now be selected which is intended for a specific function.
  • the device has a scissor device 4 which exists between the movable button 3 and immovable button parts 6 arranged on a base plate 5.
  • the scissor device 4 has scissor arms 7 guide pins 8 which are mounted in guide slots 9 of the button 3 and in guide slots 10 of the immovable button parts 6.
  • the scissor device 4 ensures that when the button 3 is pressed off-center, the other areas are taken parallel, so that key 3 is not tilted.
  • the switching behavior of the contact 2 is not influenced by the guide device 4.
  • the scissor arms 7, the guide pins 8 of which are mounted in the guide slots 10 of the immovable key parts 6, are designed to be resilient and deflect by sloping surfaces 11 on the guide pin end walls, which are supported when inserted on the guide slot walls 12, until the Snap the pin 8 into the slots 10.
  • the guide slots 10 in the immovably arranged button parts 6 can be designed as a closed guide slot 10, as shown in FIG. 3 on the left, uncut, since the guide pin 8 in any position relative to the guide slot 10 after overcoming the guide slot wall 12, as in shown in Fig. 4, can snap.
  • the scissor device 4 is composed of two identical frame parts 13, each pair of scissor arms being connected in an axle bearing 14 shown in FIG. 5, which consists of an axle pin 15 of one frame part 13 and an axle bearing hole 16 of the other and is secured in the axial direction by a clip attachment 17 of the pin 15.
  • the resilient property of the scissor arms 7 can be achieved by a U-shaped design of the frame parts 13, possibly. with a frame wall 18 in the central region, as shown in dash-dot lines, or can be achieved by a U-shaped frame loop 19, also shown in dash-dot lines.
  • Frame wall 18 or frame loop 19 increase the torsional rigidity of the frame part 13 without unduly reducing the spring action of the scissor arms 7.

Landscapes

  • Push-Button Switches (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Details Of Garments (AREA)

Abstract

2.1 Diese Tasten werden häufig von den unbeweglich angeordneten Tastenteilen abgehoben und so wieder aufgesetzt, daß ein anderer Kontakt betätigt wird. Hierbei kann durch Fehlbedienung der Eintrittsbereich der Führungsschlitze verformt und die gesamte Einrichtung unbrauchbar werden. 2.2 Hiergegen sieht die neue Einrichtung vor, daß die Scherenarme 7, deren Führungszapfen 8 in den Führungsschlitzen 10 der festen unbeweglichen Tastenteile 6 gelagert sind, federnd ausgeführt sind und durch schräge Flächen 11 an den Führungszapfenstirnwänden, die sich beim Einsetzen an Führungsschlitzwänden 12 abstützen, einfedern, bis die Zapfen 8 in die Schlitze 10 einrasten. 2.3 Mit der neuen Einrichtung wird eine Verformung des Führungsschlitzes vermieden und zusätzlich eine erleichterte Montage möglich. <IMAGE>2.1 These keys are often lifted from the immovable parts of the keys and put back on so that another contact is actuated. Incorrect operation can deform the entry area of the guide slots and render the entire device unusable. 2.2 Against this, the new device provides that the scissor arms 7, the guide pins 8 of which are supported in the guide slots 10 of the fixed, immovable button parts 6, are designed to be resilient and are deflected by inclined surfaces 11 on the guide pin end walls, which are supported when inserted on guide slot walls 12 until the pins 8 snap into the slots 10. 2.3 With the new device, deformation of the guide slot is avoided and, in addition, easier assembly is possible. <IMAGE>

Description

Die Erfindung betrifft eine Drucktasteneinrichtung für eine größere, mehrere Kontakte abdeckende Taste nach dem Oberbegriff des Anspruches 1.The invention relates to a push button device for a larger button covering several contacts according to the preamble of claim 1.

Eine derartige Drucktaste ist in der DE 33 29 698 A1 offenbart, wo es heißt: Einzelne Drucktasten von Schreibtastaturen sind wesentlich größer als die anderen Tasten und groß im Vergleich zu dem zu betätigenden Kontakt. Um ein Verkanten bei außermittiger Betätigung zu vermeiden, sind als Führungseinrichtung zwischen dem beweglichen und dem unbeweglichen Tastenteil zwei Scheren vorgesehen. Deren beide Achsen sind zueinander fluchtend ausgerichtet gehalten. Die vier Lagerstellen der oberen freien Enden der Arme schließen eine Rechteckfläche ein, die sich mit der Betätigungsfläche weitgehend deckt.Such a pushbutton is disclosed in DE 33 29 698 A1, where it says: Individual pushbuttons of typing keyboards are significantly larger than the other keys and large in comparison to the contact to be actuated. In order to avoid tilting when actuated off-center, two scissors are provided as a guide device between the movable and the immovable button part. The two axes are aligned with each other. The four bearing points of the upper free ends of the arms enclose a rectangular area which largely coincides with the actuating area.

Um das Einsetzen zu erleichtern, ist in der DE 37 19 839 C1 vorgeschlagen, daß die Führungseinrichtung durch eine Rasteinrichtung in einer Raststellung gehalten wird, in der Anschläge der Führungseinrichtung vor Führungsschlitzen liegen. Durch Niederdrücken der Taste geht die Führungseinrichtung in Betriebsstellung über. Die Anschläge gelangen dabei in die Führungsschlitze.In order to facilitate insertion, it is proposed in DE 37 19 839 C1 that the guide device is held in a latching position by a latching device, in which stops of the guide device lie in front of guide slots. By pressing the button, the guide device goes into the operating position. The stops come into the guide slots.

Es kommt in der Praxis häufig vor, daß die großen Tasten von den unbeweglich auf der Grundplatte angeordneten Tastteilen abgehoben und so wieder aufgesetzt werden, daß ein anderer Kontakt betätigt wird. Hierbei kann durch Fehlbedienung der Eintrittsbereich der Führungsschlitze verformt und die gesamte Einrichtung unbrauchbar werden.It often happens in practice that the large buttons are lifted from the immovable buttons on the base plate and put back on so that another contact is actuated. Incorrect operation can deform the entry area of the guide slots and render the entire device unusable.

Hiervon ausgehend liegt der Erfindung daher die Aufgabe zugrunde, bei einer gattungsgemäßen Drucktasteneinrichtung Maßnahmen aufzufinden, mit denen eine Verformung des Führungsschlitzes vermieden und zusätzlich eine erleichterte Montage möglich werden.Proceeding from this, the invention is therefore based on the object of finding measures in a generic pushbutton device with which deformation of the guide slot is avoided and, in addition, easier assembly is possible.

Diese Aufgabe ist durch die im Kennzeichen des Anspruches 1 angegebenen Merkmale gelöst worden. Vorteilhafte Weiterbildungen sind mit den Unteransprüchen angegeben.This object has been achieved by the features specified in the characterizing part of claim 1. Advantageous further developments are specified in the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben.An embodiment of the invention is shown in the drawing and is described below.

Die Zeichnung zeigt:

  • Fig. 1
    eine Ansicht eines Tastenfeldes, das durch eine große Taste abgedeckt werden soll,
  • Fig. 2 und 3
    eine Seitenansicht der Fig. 1 mit den beiden Stellungen der Schereneinrichtung,
  • Fig. 4 und 5
    Einzelheiten aus Fig. 1 - 3,
  • Fig. 6
    ein Rahmenteil als Einzelteil.
The drawing shows:
  • Fig. 1
    a view of a keypad that is to be covered by a large key,
  • 2 and 3
    2 shows a side view of FIG. 1 with the two positions of the scissor device,
  • 4 and 5
    Details from FIGS. 1-3,
  • Fig. 6
    a frame part as a single part.

Fig. 1 zeigt eine Ansicht eines Tastenfeldes 1 mit 4 Kontakten 2, das durch eine einzige große Taste 3 abgedeckt werden soll, die z.B. nur einen Schaltnocken (nicht dargestellt) aufweist. Durch Verdrehen der Taste 3 kann nun eine Auswahl eines Kontaktes 2 erfolgen, der für eine bestimmte Funktion vorgesehen ist. Um ein Verkanten der Taste 3 bei außermittiger Betätigung zu verhindern, weist die Einrichtung eine Schereneinrichtung 4 auf, die zwischen der beweglichen Taste 3 und unbeweglichen, auf einer Grundplatte 5 angeordneten Tastenteilen 6 besteht. Die Schereneinrichtung 4 weist an Scherenarmen 7 Führungszapfen 8 auf, die in Führungsschlitzen 9 der Taste 3 und in Führungsschlitzen 10 der unbeweglichen Tastenteile 6 gelagert sind. Die Scherenein-richtung 4 stellt sicher, daß dann, wenn die Taste 3 außermittig gedrückt wird, die anderen Bereiche parallel mitgenommen werden, so daß also die Taste 3 nicht verkantet. Das Schaltverhalten des Kontaktes 2 wird durch die Führungseinrichtung 4 nicht beeinflußt.Fig. 1 shows a view of a keypad 1 with 4 contacts 2, which is to be covered by a single large button 3, which has, for example, only one switch cam (not shown). By turning the button 3, a contact 2 can now be selected which is intended for a specific function. In order to prevent the button 3 from tilting when it is actuated off-center, the device has a scissor device 4 which exists between the movable button 3 and immovable button parts 6 arranged on a base plate 5. The scissor device 4 has scissor arms 7 guide pins 8 which are mounted in guide slots 9 of the button 3 and in guide slots 10 of the immovable button parts 6. The scissor device 4 ensures that when the button 3 is pressed off-center, the other areas are taken parallel, so that key 3 is not tilted. The switching behavior of the contact 2 is not influenced by the guide device 4.

Erfindungsgemäß ist nun vorgesehen, daß die Scherenarme 7, deren Führungszapfen 8 in den Führungsschlitzen 10 der unbeweglichen Tastenteile 6 gelagert sind, federnd ausgeführt sind und durch schräge Flächen 11 an den Führungszapfenstirnwänden, die sich beim Einsetzen an den Führungsschlitzwänden 12 abstützen, einfedern, bis die Zapfen 8 in die Schlitze 10 einrasten.According to the invention, it is now provided that the scissor arms 7, the guide pins 8 of which are mounted in the guide slots 10 of the immovable key parts 6, are designed to be resilient and deflect by sloping surfaces 11 on the guide pin end walls, which are supported when inserted on the guide slot walls 12, until the Snap the pin 8 into the slots 10.

Durch diese Maßnahmen entfällt die aus dem Stand der Technik bekannte Rasteinrichtung für die Montage der Tasten.These measures eliminate the latching device known from the prior art for the assembly of the keys.

Die Führungsschlitze 10 in den unbeweglich angeordneten Tastenteilen 6 können als geschlossener Führungsschlitz 10 ausgeführt werden, wie in Fig. 3 links, ungeschnitten dargestellt ist, da die Führungszapfen 8 in jeder beliebigen Stellung zum Führungs-schlitz 10 in diesen nach Überwindung der Führungsschlitzwand 12, wie in Fig. 4 dargestellt, einrasten kann. In einer vorteilhaften Weiterbildung ist vorgesehen, daß die Schereneinrichtung 4 aus zwei identischen Rahmenteilen 13 zusammengesetzt ist, wobei jedes Scherenarmpaar in einem in Fig. 5 dargestellten Achslager 14 verbunden ist, das aus einem Achszapfen 15 des einen Rahmenteils 13 und einem Achslagerloch 16 des anderen besteht und in Axialrichtung durch einen Verklippsansatz 17 des Zapfens 15 gesichert ist. Hierdurch ist eine leichte Montage der Schereneinrichtung 4 möglich geworden.The guide slots 10 in the immovably arranged button parts 6 can be designed as a closed guide slot 10, as shown in FIG. 3 on the left, uncut, since the guide pin 8 in any position relative to the guide slot 10 after overcoming the guide slot wall 12, as in shown in Fig. 4, can snap. In an advantageous further development it is provided that the scissor device 4 is composed of two identical frame parts 13, each pair of scissor arms being connected in an axle bearing 14 shown in FIG. 5, which consists of an axle pin 15 of one frame part 13 and an axle bearing hole 16 of the other and is secured in the axial direction by a clip attachment 17 of the pin 15. As a result, easy assembly of the scissor device 4 has become possible.

Wie aus Fig. 6 entnehmbar ist, in der ein Rahmenteil als Einzelteil dargestellt ist, kann die federnde Eigenschaft der Scherenarme 7 durch eine U-förmige Ausbildung der Rahmenteile 13 erreicht werden, u.U. mit einer Rahmenwand 18 im Mittelbereich, wie strichpunktiert dargestellt ist, oder durch eine U-förmige Rahmenschleife 19 erreicht werden, ebenfalls strichpunktiert dargestellt. Rahmenwand 18 oder Rahmenschleife 19 erhöhen die Verwindungssteifheit des Rahmenteils 13, ohne die Federwirkung der Scherenarme 7 übermäßig zu vermindern.As can be seen from Fig. 6, in which a frame part is shown as a single part, the resilient property of the scissor arms 7 can be achieved by a U-shaped design of the frame parts 13, possibly. with a frame wall 18 in the central region, as shown in dash-dot lines, or can be achieved by a U-shaped frame loop 19, also shown in dash-dot lines. Frame wall 18 or frame loop 19 increase the torsional rigidity of the frame part 13 without unduly reducing the spring action of the scissor arms 7.

Claims (3)

Drucktasteneinrichtung für eine größere, mehrere Kontakte abdeckende Taste, mit einer Verkanten bei außermittiger Betätigung verhindernden Schereneinrichtung zwischen der beweglichen Taste und unbeweglichen, auf einer Grundplatte angeordneten Tastenteilen durch an Scherenarmen angeordnete, in Führungsschlitzen der Taste und der Tastenteile gelagerte Führungszapfen, dadurch gekennzeichnet, daß die Scherenarme (7), deren Führungszapfen (8) in den Führungsschlitzen (10) der unbeweglichen Tastenteile (6) gelagert sind, federnd ausgeführt sind und durch schräge Flächen (11) an den Führungszapfenstirnwänden die sich beim Einsetzen an Führungsschlitzwänden (12) abstützen, einfedern, bis die Zapfen (8) in die Schlitze (10) einrasten.Pushbutton device for a larger, multi-contact button, with a tilting scissor device preventing eccentric actuation between the movable button and immovable button parts arranged on a base plate by guide pins arranged on scissor arms, mounted in guide slots of the button and the button parts, characterized in that the Scissor arms (7), the guide pins (8) of which are mounted in the guide slots (10) of the immovable button parts (6), are spring-loaded and are deflected by inclined surfaces (11) on the guide pin end walls, which are supported when inserted on the guide slot walls (12) until the pins (8) snap into the slots (10). Drucktasteneinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schereneinrichtung (4) aus zwei identischen Rahmenteilen (13) zusammengesetzt ist, wobei jedes Scherenarmpaar in einem Achslager (14) verbunden ist, das aus einem Achszapfen (15) des einen Rahmenteils (13) und einem Achslagerloch (16) des anderen besteht und in Axialrichtung durch einen Verklippsansatz (17) des Zapfens (15) gesichert ist.Pushbutton device according to Claim 1, characterized in that the scissor device (4) is composed of two identical frame parts (13), each pair of scissor arms being connected in an axle bearing (14) which consists of an axle pin (15) of one frame part (13) and there is an axle bearing hole (16) of the other and is secured in the axial direction by a clip (17) of the pin (15). Drucktasteneinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die federnde Eigenschaft der Scherenarme (7) durch eine U-förmige Ausbildung der Rahmenteile (13) oder durch eine U-förmige Rahmenschleife (19) erreicht wird.Pushbutton device according to claim 1 or 2, characterized in that the resilient property of the scissor arms (7) is achieved by a U-shaped design of the frame parts (13) or by a U-shaped frame loop (19).
EP96111576A 1995-09-28 1996-07-18 Push button device Expired - Lifetime EP0767474B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19536071 1995-09-28
DE19536071A DE19536071C1 (en) 1995-09-28 1995-09-28 Pushbutton device for large multi-contact pushbutton

Publications (3)

Publication Number Publication Date
EP0767474A2 true EP0767474A2 (en) 1997-04-09
EP0767474A3 EP0767474A3 (en) 1998-04-01
EP0767474B1 EP0767474B1 (en) 1999-02-03

Family

ID=7773411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96111576A Expired - Lifetime EP0767474B1 (en) 1995-09-28 1996-07-18 Push button device

Country Status (4)

Country Link
US (1) US5747758A (en)
EP (1) EP0767474B1 (en)
DE (1) DE19536071C1 (en)
ES (1) ES2128812T3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10223085A (en) * 1997-02-10 1998-08-21 Brother Ind Ltd Long key support device
US5947616A (en) * 1998-08-24 1999-09-07 Liang; Hui-Hu Key structure for computer keyboards
JP2001143562A (en) * 1999-11-11 2001-05-25 Alps Electric Co Ltd Key switch and its manufacturing method
US6660948B2 (en) * 2001-02-28 2003-12-09 Vip Investments Ltd. Switch matrix
DE102005025301B4 (en) * 2005-06-02 2008-12-18 Preh Keytec Gmbh Device for manual input and display of data
DE202005011033U1 (en) * 2005-07-13 2005-11-03 Trw Automotive Electronics & Components Gmbh & Co. Kg Multiple input key pad for automobiles has a housing with guide elements for movable electrical contacts
DE102009021821A1 (en) 2008-11-14 2010-05-20 Prehkeytec Gmbh Glass keyboard with feel
DE102009009773A1 (en) 2009-02-20 2010-08-26 Prehkeytec Gmbh Keyboard with means for displaying security features of banknotes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329698A1 (en) * 1983-08-17 1985-03-07 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt PRINT BUTTON
DE3719839C1 (en) * 1987-06-13 1988-10-13 Preh Elektro Feinmechanik Push button setup

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Publication number Priority date Publication date Assignee Title
GB2077195B (en) * 1980-06-07 1984-05-16 Burroughs Corp Stabilised button for an electrical keyboard
US5278372A (en) * 1991-11-19 1994-01-11 Brother Kogyo Kabushiki Kaisha Keyboard having connecting parts with downward open recesses
US5278371A (en) * 1992-02-14 1994-01-11 Brother Kogyo Kabushiki Kaisha Keyswitch assembly with support mechanism coupled to support plate beneath printed circuit board
JP2590622Y2 (en) * 1992-03-30 1999-02-17 ブラザー工業株式会社 Key switch device
US5504283A (en) * 1992-10-28 1996-04-02 Brother Kogyo Kabushiki Kaisha Key switch device
JP2800617B2 (en) * 1993-01-06 1998-09-21 ブラザー工業株式会社 Key switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329698A1 (en) * 1983-08-17 1985-03-07 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt PRINT BUTTON
DE3719839C1 (en) * 1987-06-13 1988-10-13 Preh Elektro Feinmechanik Push button setup

Also Published As

Publication number Publication date
DE19536071C1 (en) 1996-08-29
US5747758A (en) 1998-05-05
ES2128812T3 (en) 1999-05-16
EP0767474B1 (en) 1999-02-03
EP0767474A3 (en) 1998-04-01

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