EP2219196B1 - Pushbutton - Google Patents

Pushbutton Download PDF

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Publication number
EP2219196B1
EP2219196B1 EP10151263.0A EP10151263A EP2219196B1 EP 2219196 B1 EP2219196 B1 EP 2219196B1 EP 10151263 A EP10151263 A EP 10151263A EP 2219196 B1 EP2219196 B1 EP 2219196B1
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EP
European Patent Office
Prior art keywords
pushbutton
locking
slides
actuator
housing
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.)
Active
Application number
EP10151263.0A
Other languages
German (de)
French (fr)
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EP2219196A1 (en
Inventor
Waldemar Hensch
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.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2219196A1 publication Critical patent/EP2219196A1/en
Application granted granted Critical
Publication of EP2219196B1 publication Critical patent/EP2219196B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions

Definitions

  • the invention relates to a push-button with a housing of the actuating head and body, wherein projecting from the actuating head into the body housing guides in which a spring element supports.
  • Such a pushbutton according to the preamble of claim 1 is in the US2003 / 0226747 A1 disclosed.
  • Such pushbuttons are regularly used for command input at so-called machine / human interfaces. Not only a use for the switching of control currents, but also for power circuits is conceivable by the push-button is used as a trigger for circuit breakers. At this push button high demands are made in terms of life, robustness, sealing of the electrical part against water and dirt as cost-effective and process-reliable manufacturability.
  • Command devices are mounted in control panels, control panels, control cabinet doors or enclosure covers.
  • Command devices are generally modular. That is, they consist of an actuator, a fixing member such as a ring nut or a mounting bracket and one or more switching elements, which are designed as normally closed or normally closed switching elements.
  • the actuator is usually guided from the front through a hole in the dash panel and mounted from behind by means of a fastening part.
  • the switching elements are mechanically fastened with screws, snap hooks or bolts on the actuator or on the fastening part. The electrical connection of the switching elements to the controller via terminals.
  • the signal is generated by opening positive-opening contacts. This means that with an unconfirmed emergency stop device the contacts and so that the associated circuit are closed.
  • the normally closed contact is interrupted by striking the emergency stop actuator, which is located in front of the switchboard, and the system or machine is put into a safe state.
  • the emergency stop command device is no longer functional. That is, in an emergency operation, the contacts are not opened, and thus there is no elimination of the dangerous condition. This can lead to fatal damage to man and machine. Therefore, the secure connection between actuator and switching element is essential.
  • the object of the present invention is to provide a push button which locks when actuated in a safe position.
  • this object is achieved by a push-button with a housing of the actuator head and body, wherein the actuator head in the main body housing guides protrude, in which a spring element superimposed.
  • Essential to the invention is that the housing guides are arranged standing on actuation of the actuating head in operative connection with two locking slides.
  • the emergency stop devices usually have very limited installation space for a locking / unlocking system. It is therefore problematic to develop a system with respect to the life of the required actuation-unlocking forces withstands and remains functional.
  • the main problem is the material wear on the working surfaces of moving parts and the secure locking in the locking positions.
  • two slides are installed with their own springs in a plane parallel to each other, both contribute simultaneously to locking or unlocking.
  • the slides themselves and the mounting parts can be made of different materials and designed differently, for example, transparent with recesses for a light channel.
  • both sliders can lock the emergency stop state with double security. This means that if a slider suffers material breakage, such as spring breakage or material wear, the second slider can still lock the system completely safely.
  • material breakage such as spring breakage or material wear
  • Fig. 1 shows a pushbutton 1 according to the invention with a preferably two-part housing of actuator head 2 and body 3.
  • the actuator head 2 is preferably executed like a mushroom and overlaps the base body 3, wherein the base body 3 is attached via clamping elements 4 on the actuating head 3.
  • the housing guides 5 include a spring element 6 a.
  • the housing guides 5 have at the end insertion bevels 7, which are in operative connection with two locking slides 8 upon actuation of the actuating head.
  • the locking slide 8 are preferably arranged in a plane parallel to each other opposite one another. Upon actuation of the actuating head 2, both locking slides 8 simultaneously change into the locking position, that is to say conversely, that both locking slides 8 likewise have the same position in the unactuated state.
  • Fig. 2 the locking slide 8 are shown, wherein each locking slide 8, a spring 9 is assigned, so that in the case of a spring break still a functional spring 9 remains, which can take the locked state.
  • the 3 and 4 show the position of the locking slide 8 in the unactuated or in the actuated state.
  • the pushbutton according to the invention is characterized in that two slides are moved simultaneously in the actuation case, so that in case of material wear still a functional locking slide remains.

Landscapes

  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Die Erfindung betrifft einen Drucktaster mit einem Gehäuse aus Betätigungskopf und Grundkörper, wobei vom Betätigungskopf in den Grundkörper Gehäuseführungen ragen, in denen ein Federelement lagert.The invention relates to a push-button with a housing of the actuating head and body, wherein projecting from the actuating head into the body housing guides in which a spring element supports.

Ein derartiger Drucktaster entsprechend dem Oberbegriff von Anspruch 1 ist in der US2003/0226747 A1 offenbart.Such a pushbutton according to the preamble of claim 1 is in the US2003 / 0226747 A1 disclosed.

Derartige Drucktaster werden zur Befehlseingabe an sogenannten Maschinen/Mensch-Schnittstellen regelmäßig verwendet. Dabei ist nicht nur eine Verwendung zur Schaltung von Steuerströmen, sondern auch für Leistungsschaltungen denkbar, indem der Drucktaster als Auslöser für Leistungsschalter eingesetzt wird. An diese Drucktaster werden hohe Anforderungen bezüglich Lebensdauer, Robustheit, Abdichtung des elektrischen Teiles gegen Wasser und Schmutz sowie möglichst kostengünstige und prozesssichere Herstellbarkeit gestellt.Such pushbuttons are regularly used for command input at so-called machine / human interfaces. Not only a use for the switching of control currents, but also for power circuits is conceivable by the push-button is used as a trigger for circuit breakers. At this push button high demands are made in terms of life, robustness, sealing of the electrical part against water and dirt as cost-effective and process-reliable manufacturability.

Diese Befehlsgeräte werden in Schalttafeln, Bedientableaus, Schaltschranktüren oder Gehäusedeckeln montiert. Befehlsgeräte sind in der Regel modular aufgebaut. Das bedeutet, sie bestehen aus einem Betätiger, einem Befestigungsteil wie zum Beispiel einer Ringmutter oder einem Montagehalter und einem oder mehreren Schaltelementen, die als Öffner- oder Schließerschaltglieder ausgeführt sind. Zur Montage wird der Betätiger in der Regel von vorn durch ein Loch in der Schalttafel geführt und von hinten mittels eines Befestigungsteils montiert. Die Schaltelemente werden mit Schrauben, Schnapphaken oder Riegeln mechanisch am Betätiger oder am Befestigungsteil befestigt. Die elektrische Verbindung der Schaltelemente mit der Steuerung erfolgt über Anschlussklemmen.These command devices are mounted in control panels, control panels, control cabinet doors or enclosure covers. Command devices are generally modular. That is, they consist of an actuator, a fixing member such as a ring nut or a mounting bracket and one or more switching elements, which are designed as normally closed or normally closed switching elements. For installation, the actuator is usually guided from the front through a hole in the dash panel and mounted from behind by means of a fastening part. The switching elements are mechanically fastened with screws, snap hooks or bolts on the actuator or on the fastening part. The electrical connection of the switching elements to the controller via terminals.

Bei Sicherheitsanwendungen, wie zum Beispiel Not-Aus-Befehlsgeräten ist es Vorschrift, dass das Signal durch das Öffnen von zwangsöffnenden Kontakten erzeugt wird. Das heißt, dass bei einem unbetätigten Not-Aus-Befelsgerät die Kontakte und damit der zugehörige Stromkreis geschlossen sind. Im Störungs- oder Notfall wird durch Schlagen auf den Not-Aus-Betätiger, der sich vor der Schaltertafel befindet, der Öffnerkontakt unterbrochen und die Anlage oder Maschine in einen sicheren Zustand versetzt. Dies funktioniert jedoch nur, wenn die räumliche Zuordnung zwischen Betätiger und Schaltelement sichergestellt ist. Durch mangelhafte Montage oder durch Gewalteinwirkung kann es vorkommen, dass die Schaltelemente mechanisch vom Betätiger getrennt werden. In diesem Fall ist das Not-Aus-Befehlsgerät nicht mehr funktionsfähig. Das heißt, bei einer Betätigung im Notfall werden die Kontakte nicht geöffnet, und damit erfolgt auch keine Beseitigung des Gefahrenzustandes. Dies kann zu fatalen Schäden für Mensch und Maschine führen. Daher kommt der sicheren Verbindung zwischen Betätiger und Schaltelement eine wesentliche Bedeutung zu.For safety applications, such as emergency stop devices, it is mandatory that the signal is generated by opening positive-opening contacts. This means that with an unconfirmed emergency stop device the contacts and so that the associated circuit are closed. In the event of a fault or emergency, the normally closed contact is interrupted by striking the emergency stop actuator, which is located in front of the switchboard, and the system or machine is put into a safe state. However, this only works if the spatial assignment between the actuator and the switching element is ensured. Due to poor installation or due to the effects of force, it may happen that the switching elements are mechanically separated from the actuator. In this case, the emergency stop command device is no longer functional. That is, in an emergency operation, the contacts are not opened, and thus there is no elimination of the dangerous condition. This can lead to fatal damage to man and machine. Therefore, the secure connection between actuator and switching element is essential.

Demgemäß besteht die Aufgabe der vorliegenden Erfindung darin, einen Drucktaster zu schaffen, der beim Betätigen in eine sichere Stellung verrastet.Accordingly, the object of the present invention is to provide a push button which locks when actuated in a safe position.

Diese Aufgabe wird durch einen Drucktaster mit den Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte Aus- und Weiterbildungen, welche einzeln oder in Kombination miteinander eingesetzt werden können, sind der Gegenstand der abhängigen Ansprüche.This object is achieved by a push-button with the features of claim 1. Advantageous embodiments and developments, which can be used individually or in combination with each other, are the subject of the dependent claims.

Erfindungsgemäß wird diese Aufgabe durch einen Drucktaster mit einem Gehäuse aus Betätigungskopf und Grundkörper gelöst, wobei vom Betätigungskopf in den Grundkörper Gehäuseführungen ragen, in denen ein Federelement lagert. Erfindungswesentlich ist dabei, dass die Gehäuseführungen bei Betätigung des Betätigungskopfes in Wirkverbindung mit zwei Verriegelungsschiebern stehend angeordnet sind. Die Not-Aus-Geräte haben meistens sehr eingeschränkten Einbauraum für ein Verriegelungs-/Entriegelungs-System zur Verfügung. Es ist daher problematisch, ein System zu entwickeln, das hinsichtlich der Lebensdauer den geforderten Betätigungs-Entriegelungs-Kräften standhält und dabei funktionstüchtig bleibt. Das Hauptproblem ist der Materialverschleiß an den Arbeitsflächen von beweglichen Teilen und das sichere Verrasten in den Verrastpositionen. Im erfindungsgemäßen Schieber-Riegel-Schaltsystem werden zwei Schieber mit eigenen Federn in einer Ebene parallel zueinander eingebaut, wobei beide gleichzeitig zum Verriegeln oder Entriegeln beitragen. Die Schieber selber und die Einbauteile können aus unterschiedlichen Materialen sein und unterschiedlich ausgeführt sein, zum Beispiel durchsichtig mit Aussparungen für einen Lichtkanal. Bei der Platzierung von zwei Schiebern in einer Ebene parallel zueinander können beide Schieber den Not-Aus-Zustand mit doppelter Sicherheit verrasten. Das bedeutet, wenn ein Schieber Materialbruch, wie zum Beispiel Federbruch oder Materialverschleiß erleidet, kann der zweite Schieber das System immer noch vollständig sicher verriegeln. Bei der Betätigung oder Entriegelung werden die Kräfte auf zwei Schieber verteilt, womit ein Vorteil verbunden ist, wenn mit einem sehr starken Kraftaufwand die Betätigung ausgelöst wird. Bei der Betätigung oder Entriegelung werden die Kräfte symmetrisch, d. h. gleichmäßig verteilt und wirken nicht einseitig, womit ein größerer Verschleiß verbunden ist. Parallel zueinander laufende Schieber ermöglichen, einen größeren Schieber einzubauen, was sich günstig auf die Stabilität des Systems auswirkt. Zudem wird eine größere Verrastkraft ermöglicht. Mit der Verwendung zweier parallel zueinander in einer Ebene eingebauter Schieber ergibt sich der Vorteil, dass zwei unabhängige Federn eingebaut werden können, die getrennt voneinander funktionieren. Damit ist eine doppelte Sicherheit im Falle eines Federbruchs gegeben. Vorteilhaft ist auch, dass es zu einer Reduzierung der Baugröße des Befehlsgerätes kommt.According to the invention this object is achieved by a push-button with a housing of the actuator head and body, wherein the actuator head in the main body housing guides protrude, in which a spring element superimposed. Essential to the invention is that the housing guides are arranged standing on actuation of the actuating head in operative connection with two locking slides. The emergency stop devices usually have very limited installation space for a locking / unlocking system. It is therefore problematic to develop a system with respect to the life of the required actuation-unlocking forces withstands and remains functional. The main problem is the material wear on the working surfaces of moving parts and the secure locking in the locking positions. In the slider-latch switching system according to the invention, two slides are installed with their own springs in a plane parallel to each other, both contribute simultaneously to locking or unlocking. The slides themselves and the mounting parts can be made of different materials and designed differently, for example, transparent with recesses for a light channel. When two sliders are placed in a plane parallel to each other, both sliders can lock the emergency stop state with double security. This means that if a slider suffers material breakage, such as spring breakage or material wear, the second slider can still lock the system completely safely. Upon actuation or unlocking the forces are distributed to two slides, which is associated with an advantage when the operation is triggered with a very strong force. When operating or unlocking the forces are symmetrical, ie evenly distributed and do not act on one side, which is associated with greater wear. Parallel slides allow you to install a larger slider, which has a positive effect on the stability of the system. In addition, a larger latching force is enabled. With the use of two parallel in a plane built-in slide there is the advantage that two independent springs can be installed, which work separately. This double security in the event of a spring break is given. It is also advantageous that there is a reduction in the size of the command device.

Weitere Vorteile und Ausführungen der Erfindung werden nachfolgend anhand eines Ausführungsbeispiels sowie anhand der Zeichnung erläutert.Further advantages and embodiments of the invention will be explained below with reference to an embodiment and with reference to the drawing.

Dabei zeigt schematisch:

  • Fig. 1 eine schematische Darstellung eines erfindungsgemäßen Drucktasters mit Verriegelungsschiebern;
  • Fig. 2 eine schematische Darstellung der Verriegelungsschieber nach Fig. 1;
  • Fig. 3 eine schematische Darstellung der Verriegelungsschieber im entriegelten Zustand;
  • Fig. 4 eine schematische Darstellung der Verriegelungsschieber im verriegelten Zustand.
It shows schematically:
  • Fig. 1 a schematic representation of a pushbutton according to the invention with locking slides;
  • Fig. 2 a schematic representation of the locking slide after Fig. 1 ;
  • Fig. 3 a schematic representation of the locking slide in the unlocked state;
  • Fig. 4 a schematic representation of the locking slide in the locked state.

Fig. 1 zeigt einen erfindungsgemäßen Drucktaster 1 mit einem vorzugsweise zweiteiligen Gehäuse aus Betätigungskopf 2 und Grundkörper 3. Der Betätigungskopf 2 ist vorzugsweise pilzartig ausgeführt und überlappt den Grundkörper 3, wobei der Grundkörper 3 über Klemmelemente 4 am Betätigungskopf 3 befestigt ist. Vom Betätigungskopf 2 ragen Gehäuseführungen 5 in den Grundkörper 3. Die Gehäuseführungen 5 schließen ein Federelement 6 ein. Die Gehäuseführungen 5 weisen am Ende Einführungsschrägen 7 auf, die bei Betätigung des Betätigungskopfes 2 in Wirkverbindung mit zwei Verriegelungsschiebern 8 stehen. Die Verriegelungsschieber 8 sind vorzugsweise in einer Ebene, parallel zueinander sich gegenüberliegend angeordnet. Bei Betätigung des Betätigungskopfes 2 wechseln beide Verriegelungsschieber 8 gleichzeitig in die Verriegelungsstellung, das heißt im Umkehrschluss, dass ebenfalls beide Verriegelungsschieber 8 im unbetätigten Zustand die gleiche Stellung aufweisen. Fig. 1 shows a pushbutton 1 according to the invention with a preferably two-part housing of actuator head 2 and body 3. The actuator head 2 is preferably executed like a mushroom and overlaps the base body 3, wherein the base body 3 is attached via clamping elements 4 on the actuating head 3. From the actuator head 2 housing guides 5 protrude into the main body 3. The housing guides 5 include a spring element 6 a. The housing guides 5 have at the end insertion bevels 7, which are in operative connection with two locking slides 8 upon actuation of the actuating head. The locking slide 8 are preferably arranged in a plane parallel to each other opposite one another. Upon actuation of the actuating head 2, both locking slides 8 simultaneously change into the locking position, that is to say conversely, that both locking slides 8 likewise have the same position in the unactuated state.

In Fig. 2 sind die Verriegelungsschieber 8 dargestellt, wobei jedem Verriegelungsschieber 8 eine Feder 9 zugeordnet ist, so dass im Fall eines Federbruches immer noch eine funktionsfähige Feder 9 bleibt, die den verriegelten Zustand einnehmen kann. Die Fig. 3 und 4 zeigen die Stellung der Verriegelungsschieber 8 im unbetätigten beziehungsweise im betätigten Zustand.In Fig. 2 the locking slide 8 are shown, wherein each locking slide 8, a spring 9 is assigned, so that in the case of a spring break still a functional spring 9 remains, which can take the locked state. The 3 and 4 show the position of the locking slide 8 in the unactuated or in the actuated state.

Der erfindungsgemäße Drucktaster zeichnet sich dadurch aus, dass im Betätigungsfall zwei Schieber gleichzeitig bewegt werden, so dass im Falle eines Materialverschleißes immer noch ein funktionsfähiger Verriegelungsschieber verbleibt.The pushbutton according to the invention is characterized in that two slides are moved simultaneously in the actuation case, so that in case of material wear still a functional locking slide remains.

Claims (7)

  1. Pushbutton (1) having a housing formed from operating head (2) and base (3), housing guides (5), in which a spring element (6) is mounted, projecting from the operating head (2) into the base (3),
    characterized in that
    the housing guides (5) are arranged so as to be operatively connected to two locking slides (8) when the operating head (2) is operated.
  2. Pushbutton (1) according to Claim 1,
    characterized in that
    the locking slides (8) are arranged opposite each other.
  3. Pushbutton (1) according to Claim 1 or 2,
    characterized in that
    the locking slides (8) are simultaneously designed for locking.
  4. Pushbutton (1) according to one of the preceding claims, characterized in that
    the locking slides (8) are simultaneously designed for unlocking.
  5. Pushbutton (1) according to one of the preceding claims, characterized in that
    each locking slide (8) has a spring element (9).
  6. Pushbutton (1) according to one of the preceding claims, characterized in that
    the locking slides (8) have transparent cutouts for light channels.
  7. Pushbutton (1) according to one of the preceding claims, characterized in that
    the housing guides (5) have insertion bevels (7) at their ends.
EP10151263.0A 2009-02-11 2010-01-21 Pushbutton Active EP2219196B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910008537 DE102009008537B3 (en) 2009-02-11 2009-02-11 pushbutton

Publications (2)

Publication Number Publication Date
EP2219196A1 EP2219196A1 (en) 2010-08-18
EP2219196B1 true EP2219196B1 (en) 2017-03-08

Family

ID=41567030

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Application Number Title Priority Date Filing Date
EP10151263.0A Active EP2219196B1 (en) 2009-02-11 2010-01-21 Pushbutton

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DE (1) DE102009008537B3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011118178B3 (en) 2011-11-10 2013-05-16 Eao Ag Illuminated, water and dustproof switching element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030226747A1 (en) * 2002-06-06 2003-12-11 Groves Sydney L. Quiet pushbutton switch

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1852468U (en) * 1960-10-22 1962-05-30 Kurt Maecker STRIKING KEY IN WIRES OF ELECTRICAL CONTROLS.
DE1950669U (en) * 1965-02-06 1966-12-01 Schiele Verwaltungsgmbh KEY SWITCHES.
FR2575590B1 (en) * 1984-12-28 1987-01-23 Telemecanique Electrique EMERGENCY SWITCHING APPARATUS
US5345050A (en) * 1993-06-01 1994-09-06 Caterpillar Inc. Switch actuating assembly
JP3644258B2 (en) * 1998-06-25 2005-04-27 オムロン株式会社 switch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030226747A1 (en) * 2002-06-06 2003-12-11 Groves Sydney L. Quiet pushbutton switch

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Publication number Publication date
DE102009008537B3 (en) 2010-02-25
EP2219196A1 (en) 2010-08-18

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