EP0252449B1 - Push-button switch especially key switch - Google Patents
Push-button switch especially key switch Download PDFInfo
- Publication number
- EP0252449B1 EP0252449B1 EP87109591A EP87109591A EP0252449B1 EP 0252449 B1 EP0252449 B1 EP 0252449B1 EP 87109591 A EP87109591 A EP 87109591A EP 87109591 A EP87109591 A EP 87109591A EP 0252449 B1 EP0252449 B1 EP 0252449B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locating
- switch
- end turn
- return spring
- edge
- 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
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
Definitions
- the invention relates to a push button switch, in particular a push button switch according to the preamble of claim 1.
- a push button switch is known from US-A-4,525,613.
- the general rule for pushbutton switches is that the spring force of the return spring increases continuously as the switch-on stroke increases. With a relatively large switching stroke, the switching process can still be felt relatively easily due to the increase in the actuating force. However, if the switching stroke is small, e.g. one to two millimeters, this feeling is lost, especially if relative movements take place between the operator and the switch, e.g. in a motor vehicle such as a car, or also e.g. when operated with a glove.
- a switching process only occurs when the cam-like projections or at least their highest point have been moved past the two spring legs of the hairpin-shaped spring. However, this goes hand in hand with a noticeable decline in operating power.
- the actuator can be depressed further to effect or complete the shift, which results in a slight increase in actuation force, but less than the maximum actuation force.
- This previously known pushbutton switch is more complex than a pushbutton switch without this special pressure point during operation due to the use of an additional spring which is complex to manufacture and requires a special design of the switch cover.
- the push button switch is designed in accordance with the preamble of claim 1 in accordance with the characterizing part of this claim.
- This push button switch comes with a single spring, and yet it offers the comfort of a special, easy-to-feel pressure point even with a relatively short actuation distance.
- the contact is made only after overcoming the resistance that the sections of the end turn of the helical compression spring oppose to the displacement of the contact actuator.
- the return spring is strong enough to move the latching edge or edges past the sections of the end turn again after releasing the contact actuator and to return the contact actuator to the starting position.
- the pressure point can be clearly felt in a known manner; even when operating in the dark and / or wearing gloves.
- the stroke ie the path of the key actuating element
- s which is approximately 1 to 4 mm, in particular 1 to 2 mm.
- the increase in the force p is steep, and after the detent is triggered at point E, the force drops steeply in order to then increase continuously in accordance with the spring constant of the return spring and possibly the friction of the detent spring on the actuator.
- the switching point P is expedient after the unlatching point E on the sloping branch of the curve.
- the path e to the unlocking point E is about 3 to 30% of the stroke s of the actuator.
- an actuating member 1 designed as a switching plunger is provided with a circumferential recess 2, for example in the form of a groove, the edge of which facing the actuating side 3 is designed as an oblique latching edge 4.
- at least one spring wire section 5 which acts as a latching element, engages in the groove 2.
- the length 6 of the locking edge 4 corresponds to the path e to the unlocking point E of FIG. 1.
- the one or more spring wire sections 5 slide on the locking edge 4 and are laterally deflected. The force required for this depends from the angle b of the locking edge 4, as shown in FIGS. 3 and 4 for two forces p1, p2, and from the force which is required to be able to laterally deflect the spring wire section 5.
- the actuator 1 After overcoming the locking edge 4, the actuator 1 is unlocked, and the spring wire section 5 lies against the smooth outer wall 8 of the actuator 1. As a result, the high initial pressure is overcome, and only the restoring force of a return spring (not shown here) and the friction between the spring wire section (s) 5 and the smooth outer wall 8 act.
- the locking edge 4 does not have to be formed by a circumferential groove 2. It can also be formed by a corresponding recess in the outer wall 8 or a reduced cross section of the actuating member 1, as shown in FIGS. 3 and 4.
- FIGS. 5 to 7 A particularly simple construction to achieve the pressure point is shown in FIGS. 5 to 7, the use of the return spring 9 as a latching element, in that the winding 10 is deformed inward on two opposite sections 11, 12 or only on one section 11 or 12 are and can rest on the locking edge 4.
- the sections 11, 12 are pressed outwards by the oblique latching edge 4 and finally the unlatching is brought about as described above.
- the non-deformed part or parts 13 rest on a fixed bearing 14 of the switch.
- the or the inwardly deformed parts 11 or / and 12 can be slightly curved outwards, straight or curved inwards.
- FIG. 8 The use of such a return spring 9 in a key switch is illustrated in FIG. 8.
- two opposing contact springs 18, 19 are mounted with bevels 20 and can be contacted from the outside on the connecting elements 21.
- the upper edge of the recess 17 serves as a fixed bearing 14 for the end turn parts 13 of the end turn 10 of the return spring 9.
- the inner wall 22 of the recess 17 serves for the displaceable mounting of the actuating member 1, which is provided at the top with a push button 23 designed as a disk.
- Two latching tabs 24 are attached to the side, which can snap into corresponding sliding slots 25 in the inner wall 26 of the housing 25.
- the hollow cylindrical actuator 1 is penetrated by an insulating separating web 27 which, after overcoming the catch, meets the run-up bevels 20 of the contact springs 18, 19 and presses them apart when the actuator is pressed further, thus separating the contact.
- a contact spring set can also be opened in a similar manner.
- a circumferential groove 2 need not be provided, but two indentations 28, 29 are sufficient, as shown in FIG. 9.
- the remaining cross section the actuator 1 is then approximately elliptical. If only a section 11 or 12 of the end turn is deformed inward, then only one depression 30 is required. This can be formed according to FIG. 10 by a straight wall part or according to FIG. 11 by a curved wall part 31.
Landscapes
- Push-Button Switches (AREA)
- Mechanisms For Operating Contacts (AREA)
Description
Die Erfindung bezieht sich auf einen Drucktastenschalter, insbesondere einen Tastschalter gemäß dem Oberbegriff des Anspruchs 1. Ein solcher Drucktastenschalter ist durch die US-A-4 525 613 bekannt geworden.The invention relates to a push button switch, in particular a push button switch according to the preamble of claim 1. Such a push button switch is known from US-A-4,525,613.
Generell gilt bei Drucktastenschaltern, daß die Federkraft der Rückholfeder mit zunehmenden Einschalthub kontinuierlich größer wird. Bei relativ großem Schalthub kann aufgrund der Zunahme der Betätigungskraft der Schaltvorgang noch verhältnismäßig leicht ertastet werden. Wenn jedoch der Schalthub gering ist, bspw. ein bis zwei Millimeter beträgt, so geht dieses Gefühl verloren, insbesondere wenn zwischen der Bedienungsperson und dem Schalter Relativbewegungen stattfinden, z.B. in einem Kraftfahrzeug wie einem PKW, oder auch z.B. bei Betätigung mit einem Handschuh.The general rule for pushbutton switches is that the spring force of the return spring increases continuously as the switch-on stroke increases. With a relatively large switching stroke, the switching process can still be felt relatively easily due to the increase in the actuating force. However, if the switching stroke is small, e.g. one to two millimeters, this feeling is lost, especially if relative movements take place between the operator and the switch, e.g. in a motor vehicle such as a car, or also e.g. when operated with a glove.
Dieses Problem tritt auch bei modernen Instrumenten wie bspw. einem Computer-Keybord auf. Aus diesem Grunde wird in der US-A-4 525 613 ein Schalter vorgeschlagen, der bevorzugterweise in Verbindung mit einem Computer-Keyboard verwendet werden soll, und der zusätzlich zur Rückholfeder auch noch eine haarnadelförmige Feder aufweist. Am Betätigungsglied dieses Schalters sind gegenüberliegend zwei nockenartige Vorsprünge vorgesehen, wobei jeder einem Schenkel der haarnadelförmigen Feder zugeordnet ist. In der Ausgangslage befinden sich die nockenartigen Vorsprünge oberhalb der haarnadelförmigen Feder. Beim Betätigen des Schalters müssen sie an den beiden Schenkeln der haarnadelförmigen Feder vorbeibewegt werden, wobei diese Schenkel federelastisch nach entgegengesetzten Richtungen ausweichen. Letzteres ist vom Benutzer in Form einer erhöhten Betätigungskraft feststellbar. Zu einem Schaltvorgang kommt es indessen erst dann, wenn die nockenartigen Vorsprünge oder zumindest ihr höchster Punkt an den beiden Federschenkeln der haarnadelförmigen Feder vorbeibewegt worden sind. Dies geht aber mit einem fühlbaren Rückgang der Betätigungskraft einher. Das Betätigungsglied kann noch weiter eingedrückt werden, um den Schaltvorgang zu bewirken oder zu vollenden, was einen leichten Wiederanstieg der Betätigungskraft zur Folge hat, der aber geringer ist als die maximale Betätigungskraft.This problem also occurs with modern instruments such as a computer keyboard. For this reason, a switch is proposed in US-A-4,525,613, which is preferably used in connection with a computer keyboard should, and which also has a hairpin-shaped spring in addition to the return spring. On the actuator of this switch, two cam-like projections are provided opposite, each of which is assigned to one leg of the hairpin-shaped spring. In the starting position, the cam-like projections are located above the hairpin-shaped spring. When the switch is actuated, they have to be moved past the two legs of the hairpin-shaped spring, these legs deflecting elastically in opposite directions. The latter can be determined by the user in the form of an increased actuation force. A switching process, however, only occurs when the cam-like projections or at least their highest point have been moved past the two spring legs of the hairpin-shaped spring. However, this goes hand in hand with a noticeable decline in operating power. The actuator can be depressed further to effect or complete the shift, which results in a slight increase in actuation force, but less than the maximum actuation force.
Dieser vorbekannte Drucktastenschalter ist durch die Verwendung einer zusätzlichen, aufwendig herzustellenden und eine besondere Ausbildung des Schalterdeckels erfordernden Feder aufwendiger als ein Drucktastenschalter ohne diesen speziellen Druckpunkt bei der Betätigung.This previously known pushbutton switch is more complex than a pushbutton switch without this special pressure point during operation due to the use of an additional spring which is complex to manufacture and requires a special design of the switch cover.
Es liegt die Aufgabe vor, einen Drucktastenschalter gemäß dem Oberbegriff des Anspruchs 1 so weiterzubilden, daß er zwar die Vorteile des gattungsgemäßen Drucktastenschalters bietet, andererseits aber mit geringerem Aufwand hergestellt und montiert werden kann.It is the task of a push button switch according to the Develop the preamble of claim 1 so that it offers the advantages of the generic push button switch, but on the other hand can be manufactured and assembled with less effort.
Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, daß der Drucktastenschalter gemäß dem Oberbegriff des Anspruchs 1 entsprechend dem kennzeichnenden Teil dieses Anspruchs ausgebildet ist. Dieser Drucktastenschalter kommt mit einer einzigen Feder aus, und er bietet trotzdem den Komfort eines besonderen, leicht erfühlbaren Druckpunkts auch bei relativ kurzem Betätigungsweg. Die Kontaktgabe erfolgt erst nach Überwindung des Widerstands, den die Abschnitte der Endwindung der Schraubendruckfeder der Verschiebung des Kontaktbetätigungsglieds entgegensetzen. Andererseits ist die Rückholfeder aber stark genug, um nach dem Loslassen des Kontaktbetätigungsglieds die Rastkante oder -kanten an den Abschnitten der Endwindung wieder vorbeizubewegen und das Kontaktbetätigungsglied in die Ausgangslage zurückzustellen. In bekannter Weise ist der Druckpunkt deutlich zu erfühlen; auch bei Betätigung in der Dunkelheit und/oder mit Handschuhen.To achieve this object, it is proposed according to the invention that the push button switch is designed in accordance with the preamble of claim 1 in accordance with the characterizing part of this claim. This push button switch comes with a single spring, and yet it offers the comfort of a special, easy-to-feel pressure point even with a relatively short actuation distance. The contact is made only after overcoming the resistance that the sections of the end turn of the helical compression spring oppose to the displacement of the contact actuator. On the other hand, the return spring is strong enough to move the latching edge or edges past the sections of the end turn again after releasing the contact actuator and to return the contact actuator to the starting position. The pressure point can be clearly felt in a known manner; even when operating in the dark and / or wearing gloves.
Weitere vorteilhafte Einzelheiten der Erfindung ergeben sich anhand der in den Figuren der Zeichnung veranschaulichten Ausführungsbeispiele. Es zeigen:
- Figur 1
- eine mögliche Einschaltkennlinie eines erfindungsgemäßen Schalters;
- Figur 2
- einen Schaltstößel mit Rastfederstäben und umlaufender Rastkante,
- Figuren 3 und 4
- je eine Rastkante mit voneinander verschiedener Steigung;
- Figuren 5, 6 und 7
- drei Ansichten einer Ausführung einer Ausführung einer Rückholfeder als Rastfeder;
Figur 8- einen Taster, mit Rückholfeder als Rastfeder in einer Explosionsdarstellung;
- Figuren 9-11
- mögliche Ausbildungen der Rückholfederendwindung.
- Figure 1
- a possible switch-on characteristic of a switch according to the invention;
- Figure 2
- a switching plunger with locking spring bars and all-round locking edge,
- Figures 3 and 4
- one locking edge each with a different slope;
- Figures 5, 6 and 7
- three views of an embodiment of an embodiment of a return spring as a detent spring;
- Figure 8
- a button with return spring as a detent spring in an exploded view;
- Figures 9-11
- possible training of the return spring end turn.
In Fig. 1 ist mit s der Hub, also der Weg des Tastenbetätigungsgliedes bezeichnet, der etwa 1 bis 4 mm insbesondere 1 bis 2 mm beträgt. Im ersten Viertel des Hubes ist der Anstieg der Kraft p steil, und nach Auslösung der Rastung im Punkt E fällt die Kraft steil ab, um dann entsprechend der Federkonstante der Rückholfeder und ggf. der Reibung der Rastfeder am Betätigungsglied stetig zuzunehmen. Der Schaltpunkt P liegt zweckmäßig nach dem Entrastpunkt E auf dem abfallenden Ast der Kurve.In Fig. 1, the stroke, ie the path of the key actuating element, is designated by s, which is approximately 1 to 4 mm, in particular 1 to 2 mm. In the first quarter of the stroke, the increase in the force p is steep, and after the detent is triggered at point E, the force drops steeply in order to then increase continuously in accordance with the spring constant of the return spring and possibly the friction of the detent spring on the actuator. The switching point P is expedient after the unlatching point E on the sloping branch of the curve.
Der Weg e bis zum Entrastpunkt E beträgt etwa 3 bis 30% des Hubes s des Betätigungsgliedes.The path e to the unlocking point E is about 3 to 30% of the stroke s of the actuator.
In Fig. 2 ist ein als Schaltstößel ausgebildetes Betätigungsglied 1 mit einer umlaufenden Vertiefung 2, z.B. in Form einer Nut, versehen, deren der Betätigungsseite 3 zugewandter Rand als schräge Rastkante 4 ausgebildet ist. In die Nut 2 greift in Ruhestellung des Schalters wenigstens ein als Rastglied wirkender Federdrahtabschnitt 5 ein. Die Länge 6 der Rastkante 4 entspricht dem Weg e bis zum Entrastpunkt E der Fig. 1. Beim Druck auf das Betätigungsglied 1 in Richtung des Pfeiles 7 gleitet dieses in einer geeigneten Führung im Drucktasten- oder Tastschalter nach unten. Dabei gleiten der oder die Federdrahtabschnitte 5 auf der Rastkante 4 und werden seitlich ausgelenkt. Die hierzu erforderliche Kraft hängt vom Winkel b der Rastkante 4 ab, wie in Fig. 3 und 4 für zwei Kräfte p1, p2 dargestellt, und von der Kraft, die erforderlich ist, um die Federdrahtabschnitt 5 seitlich auslenken zu können.2, an actuating member 1 designed as a switching plunger is provided with a circumferential recess 2, for example in the form of a groove, the edge of which facing the actuating side 3 is designed as an oblique latching edge 4. In the rest position of the switch, at least one spring wire section 5, which acts as a latching element, engages in the groove 2. The length 6 of the locking edge 4 corresponds to the path e to the unlocking point E of FIG. 1. When the actuating element 1 is pressed in the direction of the
Nach Überwindung der Rastkante 4 ist das Betätigungsglied 1 entrastet, und der Federdrahtabschnitt 5 liegt an der glatten Außenwand 8 des Betätigungsgliedes 1 an. Dadurch ist der hohe Anfangsdruck überwunden, und es wirkt nur noch die Rückstellkraft einer hier nicht dargestellten Rückholfeder und die Reibung zwischen der bzw. den Federdrahtabschnitten 5 und der glatten Außenwand 8.After overcoming the locking edge 4, the actuator 1 is unlocked, and the spring wire section 5 lies against the smooth
Die Rastkante 4 muß nicht durch eine umlaufende Nut 2 gebildet sein. Sie kann auch durch eine entsprechende Vertiefung der Außenwand 8 oder einen verminderten Querschnitt des Betätigungsgliedes 1 gebildet sein, wie in den Fig. 3 und 4 dargestellt.The locking edge 4 does not have to be formed by a circumferential groove 2. It can also be formed by a corresponding recess in the
Eine besonders einfache Konstruktion zur Erzielung des Druckpunktes bildet gemäß den Fig. 5 bis 7 die Verwendung der Rückholfeder 9 als Rastglied, indem deren Enwindung 10 an zwei einander gegenüberliegenden Abschnitten 11, 12 oder auch nur an einem Abschnitt 11 oder 12 nach innen verformt ist bzw. sind und an der Rastkante 4 anliegen können. Bei Betätigung des Betätigungsgliedes 1 werden die Abschnitte 11, 12 durch die schräge Rastkante 4 nach außen gedrückt und schließlich die Entrastung herbeigeführt wie oben beschrieben. Der nicht verformte Teil bzw. die Teile 13 liegen auf einem Festlager 14 des Schalters auf.A particularly simple construction to achieve the pressure point is shown in FIGS. 5 to 7, the use of the
Der oder die nach innen verformten Teile 11 oder/und 12 können leicht nach außen gewölbt, geradlinig oder nach innen gewölbt ausgebildet sein.The or the inwardly
Die Anwendung einer solchen Rückholteder 9 in einem Tastschalter ist in Fig. 8 veranschaulicht. Innerhalb des buchsenartigen Gehäuse 15 sind in der Aussparung 17 des Bodens 16 zwei gegeneinanderliegende Kontaktfedern 18, 19 mit Auflaufschrägen 20 angebracht und an den Anschlußelementen 21 von außen kontaktierbar.The use of such a
Der obere Rand der Aussparung 17 dient als Festlager 14 für die Endwindungsteile 13 der Endwindung 10 der Rückholfeder 9. Diese umgibt ein hier als hohlzylindrischer Gleitschaft ausgebildetes Betätigungsglied 1 mit geringem Spiel. Dieses ist mit einer Nut 2 versehen, durch die die Rastkante 4 gebildet wird und in die die nach innen verformten Abschnitte 11, 12 der Rückholfeder 9 einrasten.The upper edge of the
Die Innenwand 22 der Aussparung 17 dient zur verschiebbaren Lagerung des Betätigungsgliedes 1, das oben mit einem als Scheibe ausgebildeten Druckknopf 23 versehen ist. Daran sind seitlich zwei Rastlaschen 24 angebracht, die in entsprechende Gleitschlitze 25 der Innenwand 26 des Gehäuses 25 einrasten können.The
Das hohlzylindrische Betätigungsglied 1 ist von einem isolierenden Trennsteg 27 durchsetzt, der nach Überwindung der Rast auf die Auflaufschrägen 20 der Kontaktfedern 18, 19 trifft und diese beim Weiterdrücken des Betätigungsgliedes auseinanderdrückt und damit den Kontakt trennt. Auf ähnliche Weise kann auch ein Kontaktfedersatz geöffnet werden.The hollow cylindrical actuator 1 is penetrated by an insulating separating
Wie bereits angedeutet, braucht keine umlaufende Nut 2 vorgesehen zu sein, sondern es genügen zwei Vertiefungen 28, 29, wie in Fig. 9 dargestellt. Der verbleibende Querschnitt des Betätigungsgliedes 1 ist dann etwa elliptisch ausgebildet. Ist nur ein Abschnitt 11 oder 12 der Endwindung nach innen verformt, so ist auch nur eine Vertiefung 30 erforderlich. Diese kann gemäß Fig. 10 durch einen geraden oder gemäß Fig. 11 durch einen gebogenen Wandteil 31 gebildet sein.As already indicated, a circumferential groove 2 need not be provided, but two
Claims (4)
- A pushbutton switch, especially a key switch, with a member (1), especially a contact-actuating member, movable in the direction of pressure, and with a return spring (9) which is tensioned when the movable member (1) is pressed and moves this into the rest position when the movable member (1) is released, wherein at least one fixedly disposed and laterally elastically deflectable locating member and at least one locating edge (4, 31) which is in or can be brought into an operative connection with the locating member and is formed on the surface (8) of the movable member (1), constructed like a shank,is provided in such a way that, when the key button (23) is pressed, first the locating member strikes against the locating edge (4, 31) and is laterally deflectable by the locating edge (4, 31) until the locating connection disengages and wherein thereafter the movable member (1) can be moved further against the force of the return spring (9), and that at least one contact (18, 19) is not actuatable until after or shortly before the disengagement, characterized in that the locating member or members is/are fabricated in one piece with the return spring (9) constructed as a spiral compression spring and disposed on the end turn (10) thereof distant from the key button (23), the locating member or members being formed by at least one section (11 and/or 12) of the end turn (10) which can come into an operative connection with the locating edge or edges (4, 31), and that the end turn (10) or an undeformed part (13) thereof rests on a solid support (14).
- Switch as claimed in Claim 1, characterized in that the at least one section (11, 12) of the end turn (10) of the return spring (9) is deformed inward and runs at least approximately in a straight line.
- Switch as claimed in Claim 1 or 2, characterized in that two opposite sections (11, 12) of the end turn (10) of the return spring (9) are deformed inwards.
- Switch as claimed in Claim 2 or 3, characterized in that there is disposed on the movable member (1), for each section (11, 12) of the end turn (10), an inclined locating edge (31) of a depression (28,29,30) or a groove (2) running round it and forming the inclined locating edge (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3622962 | 1986-07-09 | ||
| DE19863622962 DE3622962A1 (en) | 1986-07-09 | 1986-07-09 | PUSH BUTTON SWITCHES, IN PARTICULAR BUTTON SWITCHES |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0252449A2 EP0252449A2 (en) | 1988-01-13 |
| EP0252449A3 EP0252449A3 (en) | 1989-10-25 |
| EP0252449B1 true EP0252449B1 (en) | 1992-09-30 |
Family
ID=6304676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87109591A Expired - Lifetime EP0252449B1 (en) | 1986-07-09 | 1987-07-03 | Push-button switch especially key switch |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4751355A (en) |
| EP (1) | EP0252449B1 (en) |
| JP (1) | JPH0628124B2 (en) |
| CA (1) | CA1312896C (en) |
| DE (2) | DE3622962A1 (en) |
| ES (1) | ES2034994T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19951556A1 (en) * | 1999-10-27 | 2001-06-21 | Itt Mfg Enterprises Inc | Pressure switch used as a touch contact has a spring element that interacts with a bevel formed on a ram, and a damping device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0339209B1 (en) * | 1988-03-31 | 1995-05-17 | Oki Electric Industry Company, Limited | Push-button switch |
| DE4330576C1 (en) * | 1993-09-09 | 1994-11-10 | Preh Elektro Feinmechanik | Momentary-contact switch (push-button switch) |
| US5566710A (en) * | 1994-09-29 | 1996-10-22 | Dana Corporation | Pre-detent tactile feedback assembly for a fluid control valve |
| DE10341750A1 (en) * | 2003-09-08 | 2005-03-31 | Leopold Kostal Gmbh & Co Kg | Arrangement for generating a haptic of a manual linearly moveable control member having a spring arm moveable radially relative to linear movement of a link body |
| CN101312101B (en) * | 2007-05-25 | 2010-09-08 | 惠州市Tcl电脑科技有限责任公司 | Press key possessing balancing device |
| DE112009001656T5 (en) * | 2008-07-09 | 2011-07-07 | OMRON DUALTEC Automotive Electronics Inc., Ontario | Switch mounting structure |
| JP5740337B2 (en) * | 2012-03-29 | 2015-06-24 | 京セラドキュメントソリューションズ株式会社 | Paper feeding device and image forming apparatus |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3549846A (en) * | 1969-04-30 | 1970-12-22 | Scantlin Electronics Inc | Releasable fastener for actuator element of snap switch,or the like |
| GB1472851A (en) * | 1973-04-09 | 1977-05-11 | Alphameric Keyboards Ltd | Keyboards |
| JPS5650647Y2 (en) * | 1976-02-20 | 1981-11-27 | ||
| FR2420834A1 (en) * | 1978-03-24 | 1979-10-19 | Suisse Horlogerie | PUSHBUTTON SWITCH FOR WATCH PART |
| GB2023933A (en) * | 1978-03-29 | 1980-01-03 | Plessey Co Ltd | Push button switch |
| CH632112A5 (en) * | 1978-07-07 | 1982-09-15 | Sodeco Compteurs De Geneve | Push-button keypad and use of the same as a dialling keypad of a public telephone station |
| JPS5690326U (en) * | 1979-12-14 | 1981-07-18 | ||
| JPS5819432U (en) * | 1981-07-31 | 1983-02-05 | 沖電気工業株式会社 | push button switch |
| US4525613A (en) * | 1984-01-20 | 1985-06-25 | Apple Computer, Inc. | Spiral spring keyboard switch with hairpin spring tactile feedback |
-
1986
- 1986-07-09 DE DE19863622962 patent/DE3622962A1/en not_active Withdrawn
-
1987
- 1987-07-03 DE DE8787109591T patent/DE3781954D1/en not_active Expired - Lifetime
- 1987-07-03 ES ES198787109591T patent/ES2034994T3/en not_active Expired - Lifetime
- 1987-07-03 EP EP87109591A patent/EP0252449B1/en not_active Expired - Lifetime
- 1987-07-08 CA CA000541593A patent/CA1312896C/en not_active Expired - Fee Related
- 1987-07-08 JP JP62170840A patent/JPH0628124B2/en not_active Expired - Lifetime
- 1987-07-08 US US07/070,985 patent/US4751355A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19951556A1 (en) * | 1999-10-27 | 2001-06-21 | Itt Mfg Enterprises Inc | Pressure switch used as a touch contact has a spring element that interacts with a bevel formed on a ram, and a damping device |
| DE19951556B4 (en) * | 1999-10-27 | 2005-03-10 | Itt Mfg Enterprises Inc | Pressure switch, in particular push-button switch |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3781954D1 (en) | 1992-11-05 |
| ES2034994T3 (en) | 1993-04-16 |
| DE3622962A1 (en) | 1988-01-21 |
| EP0252449A2 (en) | 1988-01-13 |
| EP0252449A3 (en) | 1989-10-25 |
| US4751355A (en) | 1988-06-14 |
| CA1312896C (en) | 1993-01-19 |
| JPS6366808A (en) | 1988-03-25 |
| JPH0628124B2 (en) | 1994-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0100936B1 (en) | Push button switch | |
| DE4030030C2 (en) | Key switch | |
| DE19853438A1 (en) | Multi-directional push button switch arrangement | |
| DE2224555C3 (en) | Switching mechanism with snap action for switches and electrical signal generators | |
| DE19734997C2 (en) | Push button switch with scissor-like arm elements | |
| DE2260346A1 (en) | PUSH BUTTON | |
| DE2229406A1 (en) | CAPACITIVE SWITCH BUTTON AS ELECTRIC SIGNAL GENERATOR | |
| EP0222106B1 (en) | Push button switch | |
| EP0252449B1 (en) | Push-button switch especially key switch | |
| DE3140199C2 (en) | Push-button switches, in particular push-button switches with low key presses for input keyboards | |
| DE3112328A1 (en) | Push-button switch having a pushbutton in the form of a cap | |
| DE2942720C2 (en) | Snap action push button | |
| EP0301413B1 (en) | Electrical switch, especially for motor vehicles | |
| EP1467390B1 (en) | Key-pad for the control panel of a household appliance | |
| EP0643408A1 (en) | Push button switch | |
| DE2651376C2 (en) | Push button arrangement for actuating at least one switching contact of an electrical switch | |
| DE3442173A1 (en) | ELECTRIC SWITCH, SQUARE DESIGN | |
| EP1912106B1 (en) | Multifunctional operating element | |
| DE4243991C2 (en) | Switch actuation device | |
| DE3308989C2 (en) | ||
| DE2246714A1 (en) | SWITCH BUTTON WITH A SNAP MECHANIC | |
| DE2730659C2 (en) | Push button switch | |
| EP0238899A1 (en) | Push-button switch | |
| DE2257983A1 (en) | PUSH BUTTON SWITCH | |
| DE3324253A1 (en) | Push-button switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE ES FR GB IT SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE ES FR GB IT SE |
|
| 17P | Request for examination filed |
Effective date: 19891019 |
|
| 17Q | First examination report despatched |
Effective date: 19810903 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT SE |
|
| ITF | It: translation for a ep patent filed |
Owner name: BUGNION S.P.A. |
|
| REF | Corresponds to: |
Ref document number: 3781954 Country of ref document: DE Date of ref document: 19921105 |
|
| ET | Fr: translation filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2034994 Country of ref document: ES Kind code of ref document: T3 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| EAL | Se: european patent in force in sweden |
Ref document number: 87109591.5 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20060717 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20060726 Year of fee payment: 20 Ref country code: GB Payment date: 20060726 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20060731 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20060831 Year of fee payment: 20 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 |
|
| EUG | Se: european patent has lapsed | ||
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20070704 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20070702 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20070704 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20060727 Year of fee payment: 20 |