EP0767474B1 - Push button device - Google Patents
Push button device Download PDFInfo
- Publication number
- EP0767474B1 EP0767474B1 EP96111576A EP96111576A EP0767474B1 EP 0767474 B1 EP0767474 B1 EP 0767474B1 EP 96111576 A EP96111576 A EP 96111576A EP 96111576 A EP96111576 A EP 96111576A EP 0767474 B1 EP0767474 B1 EP 0767474B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- key
- guiding
- portions
- scissor arms
- button device
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- H01H3/125—Push-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, multiple contacts covering key according to the preamble of claim 1.
- Such a push button is disclosed in DE 33 29 698 A1, where it says: Individual Pushbuttons on typing keyboards are much larger than the other keys and large compared to the contact to be actuated.
- To tilt in the case of off-center Avoid actuation are as a guide between the movable and the immovable button part provided two scissors. Their two axes are mutually related kept aligned.
- the four bearing points of the upper free ends of the arms enclose a rectangular area that largely coincides with the operating area.
- buttons are immovable on the Base plate arranged touch parts lifted off and put back on so that a other contact is activated.
- the entry area of the Guide slots deformed and the entire facility become unusable.
- the invention is therefore based on the object in a generic Push button device to find measures with which a deformation of the guide slot are avoided and in addition easier installation is possible.
- Fig. 1 shows a view of a keypad 1 with 4 contacts 2 by a single large button 3 is to be covered, e.g. only one switching cam (not shown) having.
- a contact 2 can now be selected by turning the button 3, which is intended for a specific function.
- the device has a scissor device 4, the between the movable button 3 and immovable, arranged on a base plate 5 Key parts 6 is made.
- the scissor device 4 has guide pins 8 on scissor arms 7 on in the guide slots 9 of the button 3 and in guide slots 10 of the immovable Key parts 6 are stored.
- 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 determined by the guide device 4 not affected.
- the guide slots 10 in the immovably arranged button parts 6 can be used as closed guide slot 10 are executed, as in Fig. 3 left, uncut is shown since the guide pin 8 in any position to the guide slot 10 in these after overcoming the guide slot wall 12, as shown in FIG. 4, can snap into place.
- the Scissor device 4 is composed of two identical frame parts 13, wherein each pair of scissors arms is connected in an axle bearing 14 shown in FIG an axle 15 of one frame part 13 and an axle bearing hole 16 of the other exists and is secured in the axial direction by a clip 17 of the pin 15. As a result, easy assembly of the scissor device 4 has become possible.
- a frame part is shown as an individual part
- the resilient property of the scissor arms 7 by a U-shaped design of the frame parts 13 can be reached, possibly with a frame wall 18 in the central region, as in dash-dotted lines is shown, or can be achieved by a U-shaped frame loop 19, also shown in dash-dotted lines.
- Frame wall 18 or frame loop 19 increase the Torsional rigidity of the frame part 13 without the spring action of the scissor arms 7 diminish excessively.
Landscapes
- Push-Button Switches (AREA)
- Supports Or Holders For Household Use (AREA)
- Details Of Garments (AREA)
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, multiple contacts covering key 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 push button is disclosed in DE 33 29 698 A1, where it says: Individual Pushbuttons on typing keyboards are much larger than the other keys and large compared to the contact to be actuated. To tilt in the case of off-center Avoid actuation are as a guide between the movable and the immovable button part provided two scissors. Their two axes are mutually related kept aligned. The four bearing points of the upper free ends of the arms enclose a rectangular area that largely coincides with the operating 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.To facilitate insertion, it is proposed in DE 37 19 839 C1 that the Guide device is held by a locking device in a locking position in the Stops of the guide device are in front of guide slots. By depressing the Key moves the guide device into the operating position. The attacks arrive 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 immovable on the Base plate arranged touch parts lifted off and put back on so that a other contact is activated. The entry area of the Guide slots deformed and the entire facility become 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 in a generic Push button device to find measures with which a deformation of the guide slot are avoided and in addition easier installation is possible.
Diese Aufgabe ist durch die im Anspruch 1 angegebenen Merkmale gelöst worden. Vorteilhafte Weiterbildungen sind mit den Unteransprüchen angegeben.This object is achieved by the features specified in claim 1 been solved. 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 below described.
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.
- 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
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
Durch diese Maßnahmen entfällt die aus dem Stand der Technik bekannte Rasteinrichtung für die Montage der Tasten.These measures eliminate the locking device known from the prior art for mounting the buttons.
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
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 an individual part, the
resilient property of the
Claims (3)
- Push-button device for a comparatively large key (3) which covers a plurality of contacts, having a scissors device (4), between the movable key (3) and unmovable portions (6) of the key that are arranged on a base plate, which prevents tilting in the event of off-centre actuation by means of guiding pins (8) arranged on scissor arms and mounted in guiding slots (10) of the key (3) and of the portions (6) of the key, characterised in that the scissor arms (7), the guiding pins (8) of which are mounted in the guiding slots (10) of the unmovable portions (6) of the key, are constructed so as to be resilient and, as a result of sloping surfaces (11) on the end walls of the guiding pins, which sloping surfaces are supported on walls (12) of the guiding slot during insertion, are urged resiliently inwards until the pins (8) engage in the slots (10).
- Push button device according to claim 1,
characterised in that the scissors device (4) is made up of two identical frame portions (13), with each pair of scissor arms being connected by an axle bearing (14) which consists of an axle pin (15) of the one frame portion (13) and an axle-bearing hole (16) of the other, and is secured in the axial direction by a locking shoulder projection (17) of the pin (15). - Push button device according to claim 1 or 2,
characterised in that the resilience of the scissor arms (7) is achieved by a U-shaped construction of the frame portions (13) or by a U-shaped frame loop (19).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19536071A DE19536071C1 (en) | 1995-09-28 | 1995-09-28 | Pushbutton device for large multi-contact pushbutton |
DE19536071 | 1995-09-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0767474A2 EP0767474A2 (en) | 1997-04-09 |
EP0767474A3 EP0767474A3 (en) | 1998-04-01 |
EP0767474B1 true 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)
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 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2077195B (en) * | 1980-06-07 | 1984-05-16 | Burroughs Corp | Stabilised button for an electrical keyboard |
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 |
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 |
-
1995
- 1995-09-28 DE DE19536071A patent/DE19536071C1/en not_active Expired - Fee Related
-
1996
- 1996-07-18 ES ES96111576T patent/ES2128812T3/en not_active Expired - Lifetime
- 1996-07-18 EP EP96111576A patent/EP0767474B1/en not_active Expired - Lifetime
- 1996-09-27 US US08/720,015 patent/US5747758A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19536071C1 (en) | 1996-08-29 |
US5747758A (en) | 1998-05-05 |
ES2128812T3 (en) | 1999-05-16 |
EP0767474A3 (en) | 1998-04-01 |
EP0767474A2 (en) | 1997-04-09 |
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