EP2174330B1 - Microswitch - Google Patents
Microswitch Download PDFInfo
- Publication number
- EP2174330B1 EP2174330B1 EP08759336A EP08759336A EP2174330B1 EP 2174330 B1 EP2174330 B1 EP 2174330B1 EP 08759336 A EP08759336 A EP 08759336A EP 08759336 A EP08759336 A EP 08759336A EP 2174330 B1 EP2174330 B1 EP 2174330B1
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- EP
- European Patent Office
- Prior art keywords
- contact
- microswitch
- contact bridge
- ram
- contacts
- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2083—Bridging contact surfaces directed at an oblique angle with respect to the movement of the bridge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
Definitions
- the invention relates to a microswitch having at least two contact points, each having a movable contact and a fixed contact, wherein the movable contacts are arranged on a contact bridge, the contact bridge by means of a plunger movable and from a first switching position, in which the contact points are opened, in a second Switching position in which the contact points are closed, can be transferred.
- microswitches have been in use for some time and are used in applications with low currents, such as control currents or fault currents, in the milliampere range. It is known that the contacts of these microswitches can become dirty in use, so that in the worst case in the closed position no current flow between the contacts takes place more.
- the contact bridge is mounted on the spring floating in the plunger. As a result, the position of the contact bridge and the transmitted force during switching, d. H. when closing and opening the contact points, not clearly defined. The sequence of movement at the opposite contacts of the contact points when opening and closing is also not specified.
- an improved micro-switch according to the preamble of claim 1, as disclosed in US-A-2 758 169 to provide, with a safe self-cleaning of the contacts when closing or when switching is achieved.
- the invention provides as disclosed in claim 1, that the contact bridge is mounted so that the contact bridge performs a rotational movement about a parallel to its longitudinal axis of rotation when closing and opening the contacts, whereby between the opposing contacts each pad a positively driven Frictional movement takes place transversely to the longitudinal extent of the contact bridge.
- the plunger has an upper abutment against which the contact bridge in the closed position, and a lower abutment against which the contact bridge rests in the open position, wherein the upper abutment is arranged obliquely to the lower abutment ,
- the contact bridge is transferred in a movement of the plunger from a position in which the contact bridge is arranged substantially perpendicular to the plunger in a position in which contact bridge is arranged obliquely to the plunger.
- the rotational or tilting movement is generated, which is necessary so that the contacts rub against each other transversely to the longitudinal extent of the contact bridge.
- it can be ensured that with the plunger movement sufficient pressure for the self-cleaning of the contacts is generated.
- a further variant provides that the contact bridge has at least one first, arranged transversely to the longitudinal extent of the contact bridge lever which is mounted in a receptacle in the plunger.
- the contact bridge is thus defined in a position defined in the receptacle of the plunger, there is a defined pivot point for the rotational movement of the contact bridge, by which the frictional movement is generated transversely to the longitudinal extent of the contact bridge to the contacts.
- the first lever is arranged centrally between the two movable contacts on the contact bridge. This makes it possible to ensure that approximately equal forces act at both contact points.
- a further preferred embodiment provides that the contact bridge has a further lever, which is arranged opposite to the first lever and in a guide guided in the ram. As a result, a centering of the contact bridge when closing and opening the contacts can be achieved.
- the contact bridge is rotatably mounted about an axis extending transversely to the longitudinal axis of the ram and transversely to the longitudinal extent of the contact bridge. This allows the contact bridge perform a rocking motion, whereby vertical inaccuracies between the two contact points can be compensated. If the two fixed contacts are not arranged at the same height, this is compensated.
- the contact bridge is also rotatably mounted about the ram longitudinal axis. This allows a rotational movement of the contact bridge, whereby a horizontal offset of the two fixed contacts can be compensated for each other.
- a favorable embodiment provides that the upper abutment of the plunger has a rounded contact surface for the contact bridge. As a result, the rocking motion and the rotational movement are facilitated, are compensated by the slight misalignments of the two fixed contacts to each other.
- the microswitch may comprise at least one further contact bridge, which is constructed and supported substantially identically to the first contact bridge. In this way, a switch with double break and galvanic isolation can be realized.
- each of the contact bridges is supported in ram longitudinal direction by means of a spring on the plunger, wherein one end of the spring is connected to the contact bridge and the other end of the spring is arranged in a receptacle in the plunger.
- the resilient mounting corresponds to the distance between the contact bridges on the plunger not exactly the distance of the fixed contact pairs in the housing to each other, these differences can be compensated by the resilient mounting.
- a further expedient embodiment provides that a centering projection for the spring is arranged on each contact bridge. As a result, a simple attachment of the spring to the contact bridge is possible.
- the fixed contacts may have a substantially V-shaped cross section and the movable contacts may have a substantially semicircular cross section.
- the microswitch comprises a housing and the plunger is guided in the housing, wherein the housing has a centering part which guides a centering element of the plunger. As a result, the plunger is held in the housing on the desired trajectory.
- Fig. 1 shows a plan view of a microswitch 1, wherein the housing cover of the microswitch 1 has been removed.
- the microswitch 1 comprises a housing 2, in which a plunger 3 is arranged.
- two contact bridges 4, 5 are mounted.
- On each of the contact bridges 4, 5 are two movable contacts 6.1, 6.2; 7.1, 7.2 arranged.
- the movable contacts 6.1, 6.2; 7.1, 7.2 each act with fixed contacts 8.1, 8.2; 9.1, 9.2 together, wherein the fixed contacts 8.1, 8.2; 9.1, 9.2 are arranged in the housing 2.
- the microswitch 1 thus comprises two double interrupts, whereby a galvanic isolation is realized and different circuits, or load and control currents, can be switched.
- the double interruption distributes the voltage applied to the switch to two fixed contacts. As a result, in contrast to the simple interruption with the same contact distance higher voltages and power can be applied. It is realized a higher electrical life and a higher contact reliability.
- the plunger 3 is guided in the housing 2 in a guide 12 and can be transferred from a first position in which the contact points 10.1, 10.2, 11.1, 11.2 are opened, in a second position in which the contact points 10.1, 10.2, 11.1 , 11.2 are closed.
- Fig. 1 the plunger 3 is shown in the first position with open contact points 10.1, 10.2, 11.1, 11.2.
- the housing 2 further has a centering part 13, which interacts with a arranged on the plunger 3 centering element 14 and the plunger 3 in the guide 12 centered.
- the centering part 13 and the centering element 14 have chamfered contact surfaces, which lie against one another in the open position of the contact points 10.1, 10.2, 11.1, 11.2 and position the plunger 3 centrally in the guide 12.
- plunger 3 is in an intermediate position during the closing process.
- the actuation of the plunger 3 for transferring the contact points 10.1, 10.2, 11.1, 11.2 from the open position into a closed position can take place via a snap element, for example a bistable spring (not shown). But there are also other actuation mechanisms conceivable.
- Fig. 3 is the microswitch 1 in the closed position of the contact points 10.1, 10.2; 11.1, 11.2 shown.
- the plunger 3 was by the actuator (not shown) in moves the position in which the centering part 13 and the centering element 14 are farthest from each other.
- the force exerted by the actuator on the plunger 3 switching force is transmitted to the contact bridges 4, 5, so that the movable contacts 6.1, 6.2; 7.1, 7.2 with maximum switching force to the fixed contacts 8.1, 8.2; 9.1, 9.2 are pressed.
- the contact points 10.1, 10.2; 11.1, 11.2 are thus in the closed position.
- the contact bridges 4, 5 are arranged obliquely to the plunger 3.
- Fig. 4 is a side view of the plunger 3 with the therein mounted contact bridges 4, 5 shown.
- the contact bridges 4, 5 are in an open position of the contact points.
- the contact bridges 4, 5 each at a lower abutment 15, 16 of the plunger 3 at.
- Adjacent to each contact bridge 4, 5, an upper abutment 17, 18 is furthermore arranged in the plunger 3.
- Each of the upper abutments 17, 18 is arranged obliquely to the corresponding lower abutment 15, 16.
- each of the contact bridges 4, 5 abuts on the respective upper abutment 17, 18 and thus assumes an oblique position with respect to the open position. Opening planes spanned by the contact bridges 4, 5 in the open position therefore form an angle with closure levels spanned by the contact arms 4, 5 in the closed state.
- Each of the contact bridges 4, 5 also has on one of its longitudinal sides a lever 19, 20 which is received in each case in a receptacle 21, 22 which is arranged in the plunger 3.
- a further lever 23, 24 are arranged at each of the contact bridges 4, 5 on the respective lever 19, 20 opposite longitudinal side.
- the levers 23, 24 are each guided in a guide 25, 26 of the plunger 3, wherein the guides 25, 26 have a length which is greater than the width of the lever 23, 24, so that these levers 23, 24 during transfer of the contact bridges 4, 5 from the open position into the closed position in these guides 25, 26 can slide along.
- a centering of the contact bridges 4, 5 is achieved in the plunger 3.
- Fig. 5 is a partial sectional view of the plunger 3 is shown. Also in Fig. 5 the contact bridges 4, 5 are shown in the open position. In this case, the contact bridges 4, 5 are located on the respective lower abutments 15, 16. As shown, the upper run Abutment 17, 18 obliquely to the lower abutments 15, 16, so that the contact bridges 4, 5 perform a tilting movement when transferring from the open position to the closed position.
- the surface of the upper abutment 17, 18 is further rounded, so that a rotational movement of the contact bridges 4, 5 about the ram longitudinal axis and a rocking movement of the contact bridges 4, 5 about an axis transverse to the ram longitudinal axis and transverse to the longitudinal axis of the contact bridges 4, 5 is possible ,
- Each of the contact bridges 4, 5 is mounted in the plunger 3 via a spring 27, 28.
- Each of the springs 27, 28 is fixed at one end on a centering projection 29, 30 of the contact bridges 4, 5.
- the respective other end of the springs 27, 28 is received in a recess 31, 32, which are arranged in the plunger 3.
- the springs 27, 28 are guided during the closing operation of the microswitch 1 in the respective recess 31, 32.
- the springs 27, 28 can deviations in the distance of the contact bridges 4, 5 from each other and at a distance of the arranged in the housing 2 fixed contact pairs 8.1, 8.2; 9.1, 9.2 are balanced.
- Fig. 6 shows a plan view of contact bridge 4.
- the other contact bridge 5 is identical to this contact bridge 4 constructed, the description therefore applies to both contact bridges.
- the centering projection 29 for the spring 27 is arranged centrally.
- the first lever 19 is arranged. This lever 19 is preferably located centrally between the two movable contacts 6.1, 6.2. The transmitted by the plunger 3 when switching the microswitch 1 on the contact bridge 4 switching force is transmitted evenly through this arrangement of the lever 19 to both contact points 10.1, 10.2.
- the lever 19 is arranged in a receptacle 21 in the plunger 3.
- the second lever 23 is arranged, which is received in a guide 25 in the plunger 3 and serves to center the contact bridge 4.
- Fig. 7 shows a side view of the contact bridge 4. There are again the centering projection 29 and the upper lever 23 can be seen. On the underside of the contact bridge 4, the movable contacts 6.1, 6.2 are arranged.
- the microswitch 1 has an actuating element (not shown), preferably a bistable spring, by means of which the plunger 3 is transferred from a first position, the open position of the microswitch 1, into a second position, the closed position of the microswitch 1 can.
- the in Fig. 1 is shown, are arranged on the contact bridges 4, 5 movable contacts 6.1, 6.2, 7.1, 7.2 separated from the arranged in the housing 2 fixed contacts 8.1, 8.2, 9.1, 9.2, so that there is an air gap between them.
- the contact points 10.1, 10.2, 11.1, 11.2 are therefore open.
- Each of the contact bridges 4, 5 abuts the respective lower abutment 15, 16 of the plunger 3.
- the actuating element If the actuating element is actuated, a switching force is transmitted to the plunger 3 and the plunger 3 is moved in the guide 12, so that the microswitch 1 is transferred into the closed position.
- the closed position is in Fig. 3 shown.
- the contact points 10.1, 10.2, 11.1, 11.2 are closed, arranged on the contact bridges 4, 5 movable contacts 6.1, 6.2, 7.1, 7.2 are firmly against the opposite fixed contacts 8.1, 8.2, 9.1, 9.2.
- the contact bridges 4, 5 are now at the upper abutments 17, 18 of the plunger 3 at. Since the surface of the upper abutments 17, 18 is inclined relative to the surface of the lower abutments 15, 16, now also the contact bridges 4, 5 are inclined in the microswitch. 1
- the contact bridges 4, 5 When transferring the contact bridges 4, 5 from the open position to the closed position, the contact bridges 4, 5 first together with the plunger 3 perform a translational movement until the movable contacts 6.1, 6.2; 7.1, 7.2 at the opposite fixed contacts 8.1, 8.2; 9.1, 9.2 abut. If this is the case, the contact bridges 4, 5 can no longer be moved translationally. However, the plunger 3 is not yet in its end position and is moved further translational. The contact bridges 4, 5 are now rotated, wherein the respective pivot point is the lower end of the respective first lever 19, 20 of the contact bridges 4, 5. The rotation thus takes place essentially about a rotation axis extending parallel to the longitudinal extent of the contact bridges 4, 5.
- a second lever 23, 24 is provided on the contact bridges 4, 5, which is guided in a respective guide 25, 26 in the plunger 3 and in this guide 26 at the rotational movement of the contact bridges 4, 5 translationally moved.
- the first levers 19, 20 of the contact bridges 4, 5 are preferably centered between the arranged on the contact bridges movable contacts 6.1, 6.2; 7.1, 7.2 arranged.
- it can be ensured that act at both contact points in approximately the same forces and thus an equally strong friction occurs.
- the fixed contact pairs 8.1, 8.2; 9.1, 9.2 are slightly vertically offset.
- the contact bridges 4, 5 are each rotatably mounted about an axis which extends transversely to the longitudinal direction of the ram and transversely to the longitudinal extent of the contact bridges 4, 5, whereby a rocking movement of the contact bridges 4, 5 is made possible.
- the fixed contacts 8.1, 8.2; 9.1, 9.2 are offset in a horizontal plane. This offset is compensated by the fact that the contact bridges 4, 5 are rotatably mounted around the pushrod longitudinal direction. In order to facilitate these rocking or rotational movements of the contact bridges 4, 5, the upper abutments 17, 18 of the plunger 3 are provided with a rounded bearing surface.
- the distance of the fixed contact pairs 8.1, 8.2 of the fixed contact pairs 9.1, 9.2 does not correspond to the distance of the contact bridges 4, 5 from each other. This can be compensated by the springs 27, 28.
- the movable contacts 6.1, 6.2; 7.1, 7.2 a semi-circular cross section.
- the fixed contacts 8.1, 8.2; 9.1, 9.2 are preferably formed with a V-shaped cross section.
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Abstract
Description
Die Erfindung betrifft einen Mikroschalter mit mindestens zwei Kontaktstellen mit je einem beweglichen Kontakt und einem Festkontakt, wobei die beweglichen Kontakte auf einer Kontaktbrücke angeordnet sind, die Kontaktbrücke mittels eines Stößels bewegbar und von einer ersten Schaltstellung, in der die Kontaktstellen geöffnet sind, in eine zweite Schaltstellung, in der die Kontaktstellen geschlossen sind, überführbar ist.The invention relates to a microswitch having at least two contact points, each having a movable contact and a fixed contact, wherein the movable contacts are arranged on a contact bridge, the contact bridge by means of a plunger movable and from a first switching position, in which the contact points are opened, in a second Switching position in which the contact points are closed, can be transferred.
Solche Mikroschalter sind schon seit Längerem in Gebrauch und werden bei Anwendungen mit geringen Strömen, beispielsweise Steuerströmen oder Fehlerströmen, im Milliamperebereich eingesetzt. Es ist bekannt, dass die Kontakte dieser Mikroschalter im Gebrauch verschmutzen können, so dass im schlimmsten Fall in der Schließstellung kein Stromfluss zwischen den Kontakten mehr stattfindet.Such microswitches have been in use for some time and are used in applications with low currents, such as control currents or fault currents, in the milliampere range. It is known that the contacts of these microswitches can become dirty in use, so that in the worst case in the closed position no current flow between the contacts takes place more.
Es ist daher bekannt, die Kontaktbrücke über Federn an dem Schaltstößel des Mikroschalters zu lagern, so dass beim Schalten eine Relativbewegung zwischen den beweglichen Kontakten und den Festkontakten auftreten kann, wodurch Verschmutzungen an den Kontakten entfernt werden.It is therefore known to mount the contact bridge via springs on the switch plunger of the microswitch, so that when switching a relative movement between the movable contacts and the fixed contacts may occur, whereby contaminants are removed at the contacts.
Die Kontaktbrücke ist über die Feder schwimmend in dem Stößel gelagert. Dadurch ist die Position der Kontaktbrücke sowie die übertragene Kraft beim Schalten, d. h. beim Schließen und Öffnen der Kontaktstellen, nicht eindeutig definiert. Der Bewegungsablauf an den einander gegenüberliegenden Kontakten der Kontaktstellen bei Öffnen und Schließen ist ebenfalls nicht festgelegt.The contact bridge is mounted on the spring floating in the plunger. As a result, the position of the contact bridge and the transmitted force during switching, d. H. when closing and opening the contact points, not clearly defined. The sequence of movement at the opposite contacts of the contact points when opening and closing is also not specified.
Es ist daher die Aufgabe der vorliegenden Erfindung, einen verbesserten Mikroschalter , gemäss dem Oberbegriff des Anspruchs 1, wie offenbart in
Hierzu ist erfindungsgemäß, wie im Anspruch 1 offenbart, vorgesehen, dass die Kontaktbrücke so gelagert ist, dass die Kontaktbrücke beim Schließen und Öffnen der Kontakte eine Drehbewegung um eine parallel zu ihrer Längserstreckung verlaufende Drehachse durchführt, wodurch zwischen den einander gegenüberliegenden Kontakten jeder Kontaktstelle eine zwangsgeführte Reibbewegung quer zur Längserstreckung der Kontaktbrücke stattfindet.For this purpose, the invention provides as disclosed in
Durch die Lagerung der Kontaktbrücke ist die Drehbewegung der Kontaktbrücke beim Öffnen und Schließen festgelegt. Daher werden die beweglichen Kontakte bei jedemDue to the mounting of the contact bridge, the rotational movement of the contact bridge during opening and closing is fixed. Therefore, the moving contacts at each
Schaltvorgang auf derselben Kreisbahn geführt, wodurch die Reibbewegung zwischen den beweglichen Kontakten und den Festkontakten immer im wesentlichen derselben Bahn, quer zur Längserstreckung der Kontaktbrücke, folgt und somit zwangsgeführt ist. Bei jedem Schaltvorgang erfolgt also eine im Wesentlichen identische Bewegung an den Kontaktstellen. Dadurch, dass beim Schalten eine Reibbewegung quer zur Längserstreckung der Kontaktbrücke erfolgt, werden die einander gegenüberliegenden Kontakte ferner fest aneinander vorbei gewischt, so dass Verschmutzungen sicher aus den Kontaktstellen gerieben bzw. gewischt werden und in der Schließstellung Stromfluss garantiert wird.Switching performed on the same circular path, whereby the rubbing movement between the movable contacts and the fixed contacts always follows substantially the same path, transverse to the longitudinal extent of the contact bridge, and thus positively driven. In each switching operation thus takes place a substantially identical movement at the contact points. The fact that when switching a friction movement takes place transversely to the longitudinal extent of the contact bridge, the opposing contacts are also firmly past each other wiped, so that dirt is reliably rubbed or wiped from the contact points and in the closed position current flow is guaranteed.
In einer bevorzugten Ausführungsform ist dabei vorgesehen, dass der Stößel ein oberes Widerlager, an dem die Kontaktbrücke in der Schließstellung anliegt, und ein unteres Widerlager, an dem die Kontaktbrücke in der Offenstellung anliegt, aufweist, wobei das obere Widerlager schräg zum unteren Widerlager angeordnet ist. Somit wird also die Kontaktbrücke bei einer Bewegung des Stößels von einer Stellung, in der Kontaktbrücke im Wesentlichen senkrecht zum Stößel angeordnet ist, in eine Stellung überführt, in der Kontaktbrücke schräg zum Stößel angeordnet ist. Dadurch wird die Dreh- bzw. Kippbewegung erzeugt, die notwendig ist, damit die Kontakte quer zur Längserstreckung der Kontaktbrücke aneinander reiben. Zusätzlich kann sichergestellt werden, dass mit der Stößelbewegung ausreichend Druck für die Selbstreinigung der Kontakte erzeugt wird.In a preferred embodiment, it is provided that the plunger has an upper abutment against which the contact bridge in the closed position, and a lower abutment against which the contact bridge rests in the open position, wherein the upper abutment is arranged obliquely to the lower abutment , Thus, therefore, the contact bridge is transferred in a movement of the plunger from a position in which the contact bridge is arranged substantially perpendicular to the plunger in a position in which contact bridge is arranged obliquely to the plunger. Thereby, the rotational or tilting movement is generated, which is necessary so that the contacts rub against each other transversely to the longitudinal extent of the contact bridge. In addition, it can be ensured that with the plunger movement sufficient pressure for the self-cleaning of the contacts is generated.
Eine weitere Variante sieht vor, dass die Kontaktbrücke mindestens einen ersten, quer zur Längserstreckung der Kontaktbrücke angeordneten Hebel aufweist, der in einer Aufnahme im Stößel gelagert ist. Die Kontaktbrücke ist somit an einer Stelle definiert in der Aufnahme des Stößels gelagert, es entsteht ein definierter Drehpunkt für die Drehbewegung der Kontaktbrücke, durch die die Reibbewegung quer zur Längserstreckung der Kontaktbrücke an den Kontakten erzeugt wird. Über die Entfernung des Drehpunkts von den Kontaktstellen kann eingestellt werden, wie groß die Reibbewegung zwischen den Kontakten ist. Die Reibbewegung sollte dabei nicht zu groß sein, da sonst zu starke Reibung und damit zu starker Verschleiß an den Kontakten auftritt.A further variant provides that the contact bridge has at least one first, arranged transversely to the longitudinal extent of the contact bridge lever which is mounted in a receptacle in the plunger. The contact bridge is thus defined in a position defined in the receptacle of the plunger, there is a defined pivot point for the rotational movement of the contact bridge, by which the frictional movement is generated transversely to the longitudinal extent of the contact bridge to the contacts. By the distance of the fulcrum of the contact points can be adjusted, how large the rubbing motion between the contacts. The friction movement should not be too large, otherwise too strong friction and thus excessive wear on the contacts occurs.
Bevorzugt ist der erste Hebel mittig zwischen den beiden beweglichen Kontakten an der Kontaktbrücke angeordnet. Damit kann sichergestellt werden, dass an beiden Kontaktstellen in etwa gleich große Kräfte wirken.Preferably, the first lever is arranged centrally between the two movable contacts on the contact bridge. This makes it possible to ensure that approximately equal forces act at both contact points.
Eine weitere bevorzugte Ausbildung sieht vor, dass die Kontaktbrücke einen weiteren Hebel aufweist, der gegenüber von dem ersten Hebel angeordnet ist und in einer Führung im Stößel geführt ist. Dadurch kann eine Zentrierung der Kontaktbrücke beim Schließen und Öffnen der Kontakte erreicht werden.A further preferred embodiment provides that the contact bridge has a further lever, which is arranged opposite to the first lever and in a guide guided in the ram. As a result, a centering of the contact bridge when closing and opening the contacts can be achieved.
In einer günstigen Ausgestaltung kann vorgesehen werden, dass die Kontaktbrücke um eine quer zur Stößellängsachse und quer zur Längserstreckung der Kontaktbrücke verlaufende Achse drehbar gelagert ist. Dadurch kann die Kontaktbrücke eine Wippbewegung ausführen, wodurch vertikale Ungenauigkeiten zwischen den beiden Kontaktstellen ausgeglichen werden können. Sind die beiden Festkontakte nicht auf derselben Höhe angeordnet, so wird dies ausgeglichen.In a favorable embodiment, it can be provided that the contact bridge is rotatably mounted about an axis extending transversely to the longitudinal axis of the ram and transversely to the longitudinal extent of the contact bridge. This allows the contact bridge perform a rocking motion, whereby vertical inaccuracies between the two contact points can be compensated. If the two fixed contacts are not arranged at the same height, this is compensated.
Zweckmäßigerweise ist die Kontaktbrücke auch um die Stößellängsachse drehbar gelagert. Dies ermöglicht eine Drehbewegung der Kontaktbrücke, wodurch ein horizontaler Versatz der beiden Festkontakte zueinander ausgeglichen werden kann.Conveniently, the contact bridge is also rotatably mounted about the ram longitudinal axis. This allows a rotational movement of the contact bridge, whereby a horizontal offset of the two fixed contacts can be compensated for each other.
Eine günstige Ausgestaltung sieht vor, dass das obere Widerlager des Stößels eine abgerundete Anlagefläche für die Kontaktbrücke aufweist. Dadurch werden die Wippbewegung und die Drehbewegung erleichtert, durch die leichte Versätze der beiden Festkontakte zueinander ausgeglichen werden.A favorable embodiment provides that the upper abutment of the plunger has a rounded contact surface for the contact bridge. As a result, the rocking motion and the rotational movement are facilitated, are compensated by the slight misalignments of the two fixed contacts to each other.
In einer Variante kann der Mikroschalter mindestens eine weitere Kontaktbrücke umfassen, die im Wesentlichen identisch zur ersten Kontaktbrücke aufgebaut und gelagert ist. Auf diese Weise kann ein Schalter mit Doppelunterbrechung und galvanischer Trennung realisiert werden.In a variant, the microswitch may comprise at least one further contact bridge, which is constructed and supported substantially identically to the first contact bridge. In this way, a switch with double break and galvanic isolation can be realized.
Dabei kann vorgesehen werden, dass jede der Kontaktbrücken in Stößellängsrichtung mittels einer Feder am Stößel abgestützt ist, wobei ein Ende der Feder mit der Kontaktbrücke verbunden ist und das andere Ende der Feder in einer Aufnahme im Stößel angeordnet ist. Entspricht der Abstand der Kontaktbrücken an dem Stößel nicht genau dem Abstand der Festkontaktpaare im Gehäuse zueinander, so können diese Unterschiede durch die federnde Lagerung ausgeglichen werden.It can be provided that each of the contact bridges is supported in ram longitudinal direction by means of a spring on the plunger, wherein one end of the spring is connected to the contact bridge and the other end of the spring is arranged in a receptacle in the plunger. Corresponds to the distance between the contact bridges on the plunger not exactly the distance of the fixed contact pairs in the housing to each other, these differences can be compensated by the resilient mounting.
Eine weitere zweckmäßige Ausführungsform sieht vor, dass auf jeder Kontaktbrücke ein Zentriervorsprung für die Feder angeordnet ist. Dadurch ist eine einfache Befestigung der Feder an der Kontaktbrücke möglich.A further expedient embodiment provides that a centering projection for the spring is arranged on each contact bridge. As a result, a simple attachment of the spring to the contact bridge is possible.
In einer zweckmäßigen Ausführungsform können die Festkontakte einen im Wesentlichen V-förmigen Querschnitt aufweisen und die beweglichen Kontakte einen im Wesentlichen halbkreisförmigen Querschnitt aufweisen. Dadurch wird die Reibbewegung in Längsrichtung der Kontaktbrücke beim Schließen der Kontakte unterstützt, es findet eine effektive Selbstreinigung der Kontakte statt.In an expedient embodiment, the fixed contacts may have a substantially V-shaped cross section and the movable contacts may have a substantially semicircular cross section. As a result, the friction movement in Supported longitudinal direction of the contact bridge when closing the contacts, there is an effective self-cleaning of the contacts instead.
Eine weitere Ausbildung sieht vor, dass der Mikroschalter ein Gehäuse umfasst und der Stößel im Gehäuse geführt ist, wobei das Gehäuse ein Zentrierteil aufweist, das ein Zentrierelement des Stößels führt. Dadurch wird der Stößel im Gehäuse auf der gewünschten Bewegungsbahn gehalten.Another embodiment provides that the microswitch comprises a housing and the plunger is guided in the housing, wherein the housing has a centering part which guides a centering element of the plunger. As a result, the plunger is held in the housing on the desired trajectory.
Im Folgenden werden Ausführungsformen der Erfindung anhand einer Zeichnung näher erläutert. Es zeigen:
- Fig. 1
- Draufsicht auf einen geöffneten Mikroschalter mit zwei Kontaktbrücken in Offenstellung,
- Fig. 2
- Draufsicht auf einen geöffneten Mikroschalter mit zwei Kontaktbrücken in einer Zwischenstellung während des Schließvorgangs,
- Fig. 3
- Draufsicht auf einen geöffneten Mikroschalter mit zwei Kontaktbrücken in Schließstellung,
- Fig. 4
- Seitenansicht des Stößels des Mikroschalters mit zwei darin angeordneten Kontaktbrücken,
- Fig. 5
- Draufsicht auf eine teilweise Schnittdarstellung des Stößels mit zwei darin angeordneten Kontaktbrücken,
- Fig. 6
- Draufsicht auf eine Kontaktbrücke und
- Fig. 7
- Seitenansicht einer Kontaktbrücke.
- Fig. 1
- Top view of an open microswitch with two contact bridges in the open position,
- Fig. 2
- Top view of an open microswitch with two contact bridges in an intermediate position during the closing operation,
- Fig. 3
- Top view of an open microswitch with two contact bridges in the closed position,
- Fig. 4
- Side view of the plunger of the microswitch with two contact bridges arranged therein,
- Fig. 5
- Top view of a partial sectional view of the plunger with two contact bridges arranged therein,
- Fig. 6
- Top view on a contact bridge and
- Fig. 7
- Side view of a contact bridge.
Der Stößel 3 wird in dem Gehäuse 2 in einer Führung 12 geführt und kann von einer ersten Position, in der die Kontaktstellen 10.1, 10.2, 11.1, 11.2 geöffnet sind, in eine zweite Position überführt werden, in der die Kontaktstellen 10.1, 10.2, 11.1, 11.2 geschlossen sind. In
In
In der in
In
In
In der Schließstellung der Kontaktstellen liegt jede der Kontaktbrücken 4, 5 am jeweiligen oberen Widerlager 17, 18 an und nimmt somit in Bezug auf die Offenstellung eine schräge Position ein. Durch die Kontaktbrücken 4, 5 in der Offenstellung aufgespannte Öffnungsebenen schließen also mit durch die Kontakthrücken 4, 5 im Schließzustand aufgespannten Schließebenen einen Winkel ein.In the closed position of the contact points, each of the contact bridges 4, 5 abuts on the respective
Jede der Kontaktbrücken 4, 5 weist ferner an einer ihrer Längsseiten einen Hebel 19, 20 auf, der jeweils in einer Aufnahme 21, 22, die im Stößel 3 angeordnet ist, aufgenommen ist.Each of the contact bridges 4, 5 also has on one of its longitudinal sides a
Ferner ist an jeder der Kontaktbrücken 4, 5 an der dem jeweiligen Hebel 19, 20 gegenüberliegenden Längsseite ein weiterer Hebel 23, 24 angeordnet. Die Hebel 23, 24 sind jeweils in einer Führung 25, 26 des Stößels 3 geführt, wobei die Führungen 25, 26 eine Länge aufweisen, die größer ist als Breite der Hebel 23, 24, so dass diese Hebel 23, 24 beim Überführen der Kontaktbrücken 4, 5 aus der Offenstellung in die Schließstellung in diesen Führungen 25, 26 entlang gleiten können. Dadurch wird eine Zentrierung der Kontaktbrücken 4, 5 in dem Stößel 3 erreicht.Further, at each of the contact bridges 4, 5 on the
In
Jede der Kontaktbrücken 4, 5 ist über eine Feder 27, 28 in dem Stößel 3 gelagert. Jede der Federn 27, 28 ist mit einem Ende auf einem Zentriervorsprung 29, 30 der Kontaktbrücken 4, 5 befestigt. Das jeweils andere Ende der Federn 27, 28 ist in einer Ausnehmung 31, 32 aufgenommen, die in dem Stößel 3 angeordnet sind. Dadurch werden die Federn 27, 28 beim Schließvorgang des Mikroschalters 1 in der jeweiligen Ausnehmung 31, 32 geführt. Durch die Federn 27, 28 können Abweichungen im Abstand der Kontaktbrücken 4, 5 voneinander und im Abstand der in dem Gehäuse 2 angeordneten Festkontaktpaare 8.1, 8.2; 9.1, 9.2 voneinander ausgeglichen werden.Each of the contact bridges 4, 5 is mounted in the
Auf der Oberseite der Kontaktbrücke 4 ist mittig der Zentriervorsprung 29 für die Feder 27 angeordnet. An der unteren Längsseite 33 der Kontaktbrücke 4 ist der erste Hebel 19 angeordnet. Dieser Hebel 19 befindet sich vorzugsweise mittig zwischen den beiden beweglichen Kontakten 6.1, 6.2. Die durch den Stößel 3 beim Schalten des Mikroschalters 1 auf die Kontaktbrücke 4 übertragene Schaltkraft wird durch diese Anordnung des Hebels 19 gleichmäßig auf beide Kontaktstellen 10.1, 10.2 übertragen. Wie bereits beschrieben, ist der Hebel 19 in einer Aufnahme 21 im Stößel 3 angeordnet. Auf der dem Hebel 19 gegenüberliegenden Längsseite 34 der Kontaktbrücke 4 ist der zweite Hebel 23 angeordnet, der in einer Führung 25 im Stößel 3 aufgenommen wird und zur Zentrierung der Kontaktbrücke 4 dient.On the upper side of the
Im Folgenden wird nun das Funktionsprinzip des Mikroschalters anhand der Figuren erläutert.The functional principle of the microswitch will now be explained with reference to the figures.
Wie bereits beschrieben, weist der Mikroschalter 1 ein Betätigungselement (nicht dargestellt) auf, bevorzugt eine bistabile Feder, durch die der Stößel 3 aus einer ersten Position, der Offenstellung des Mikroschalters 1, in eine zweite Position, der Schließstellung des Mikroschalters 1, überführt werden kann. In der Offenstellung des Mikroschalters 1, die in
Beim Überführen der Kontaktbrücken 4, 5 von der Offenstellung in die Schließstellung führen die Kontaktbrücken 4, 5 zuerst zusammen mit dem Stößel 3 eine translatorische Bewegung aus, bis die beweglichen Kontakte 6.1, 6.2; 7.1, 7.2 an den jeweils gegenüberliegenden Festkontakten 8.1, 8.2; 9.1, 9.2 anliegen. Ist dies der Fall, so können die Kontaktbrücken 4, 5 nicht mehr translatorisch bewegt werden. Der Stößel 3 befindet sich allerdings noch nicht in seiner Endlage und wird weiter translatorisch bewegt. Die Kontaktbrücken 4, 5 werden nun gedreht, wobei der jeweilige Drehpunkt das untere Ende des jeweils ersten Hebels 19, 20 der Kontaktbrücken 4, 5 ist. Die Drehung erfolgt also im Wesentlichen um eine parallel zur Längserstreckung der Kontaktbrücken 4, 5 verlaufende Drehachse. Durch die Länge dieses Hebels 19, 20 und somit durch den Abstand des Drehpunkts von den Kontaktstellen 10.1, 10.2; 11.1, 11.2 kann das Ausmaß der Drehbewegung bestimmt werden. Die Kontaktbrücken 4, 5 werden gedreht, bis sie an den jeweils oberen Widerlagern 17, 18 des Stößels 3 anliegen. Durch diese Drehbewegung der Kontaktbrücken 4, 5 wird in den Kontaktstellen 10.1, 10.2, 11.1, 11.2 eine Reibbewegung erzeugt, die quer zur Längserstreckung der Kontaktbrücken stattfindet. Da jede Kontaktbrücke 4, 5 über den jeweils ersten Hebel 19, 20 an einer definierten Stelle, der jeweiligen Aufnahme 21, 22, im Stößel 3 gelagert ist, ist die Drehbewegung der Kontaktbrücken 4, 5 festgelegt. Somit ist auch die Reibbewegung an den Kontaktstellen 10.1, 10.2, 11.1, 11.2 festgelegt bzw. zwangsgeführt. Durch diese zwangsgeführte Reibbewegung wird eventuell in den Kontaktstellen 10.1, 10.2, 11.1, 11.2 befindlicher Schmutz entfernt, eventuell verschmutzte Kontakte werden gereinigt und es findet in der Schließstellung des Mikroschalters 1 sicherer Stromfluss statt.When transferring the contact bridges 4, 5 from the open position to the closed position, the contact bridges 4, 5 first together with the
Um eine Zentrierung der Kontaktbrücken 4, 5 während dieser Drehbewegung zu ermöglichen, ist an den Kontaktbrücken 4, 5 jeweils ein zweiter Hebel 23, 24 vorgesehen, der in je einer Führung 25, 26 im Stößel 3 geführt wird und sich in dieser Führung 26 bei der Drehbewegung der Kontaktbrücken 4, 5 translatorisch bewegt.In order to allow a centering of the contact bridges 4, 5 during this rotational movement, a
Die ersten Hebel 19, 20 der Kontaktbrücken 4, 5 sind bevorzugt mittig zwischen den auf den Kontaktbrücken angeordneten beweglichen Kontakten 6.1, 6.2; 7.1, 7.2 angeordnet. Somit kann sichergestellt werden, das an beiden Kontaktstellen in etwa gleiche Kräfte wirken und somit eine gleich starke Reibbewegung auftritt. Wie bereits beschrieben, kann über die Länge dieser Hebel 19, 20 eingestellt werden, wie stark die an den Kontaktstellen wirkende Reibkraft ist. Dabei muss darauf geachtet werden, dass die Reibkraft nicht zu groß wird, da durch zu starke Reibung zu starker Verschleiß an den beweglichen Kontakten 6.1, 6.2; 7.1, 7.2 und den jeweils gegenüberliegenden Festkontakten 8.1, 8.2; 9.1, 9.2 auftritt.The first levers 19, 20 of the contact bridges 4, 5 are preferably centered between the arranged on the contact bridges movable contacts 6.1, 6.2; 7.1, 7.2 arranged. Thus, it can be ensured that act at both contact points in approximately the same forces and thus an equally strong friction occurs. As already described, can be adjusted over the length of these
Durch den Stößel 3 wird beim Schaltvorgang ein Moment auf die Kontaktbrücken 4, 5 übertragen, das die Reibkraft in den Kontaktstellen 10.1, 10.2; 11.1, 11.2 erzeugt.By the
Bei der Fertigung des Mikroschalters 1 kann ein kleiner Versatz in der Anordnung der Festkontakte und der beweglichen Kontakte auftreten. So ist es zum Beispiel möglich, dass die Festkontaktpaare 8.1, 8.2; 9.1, 9.2 leicht vertikal versetzt sind. Um diesen Versatz auszugleichen, sind die Kontaktbrücken 4, 5 jeweils drehbar um eine Achse gelagert, die quer zur Stößellängsrichtung und quer zur Längserstreckung der Kontaktbrücken 4, 5 verläuft, wodurch eine Wippbewegung der Kontaktbrücken 4, 5 ermöglicht wird. Es ist aber auch möglich, dass die Festkontakte 8.1, 8.2; 9.1, 9.2 in einer horizontalen Ebene versetzt sind. Dieser Versatz wird dadurch ausgeglichen, dass die Kontaktbrücken 4, 5 um die Stößettängsrichtung drehbar gelagert sind. Um diese Wipp- bzw. Drehbewegungen der Kontaktbrücken 4, 5 zu erleichtern, sind die oberen Widerlager 17, 18 des Stößels 3 mit einer abgerundeten Auflagefläche versehen.In the manufacture of the
Weiterhin kann es möglich sein, dass der Abstand der Festkontaktpaare 8.1, 8.2 von den Festkontaktpaaren 9.1, 9.2 nicht dem Abstand der Kontaktbrücken 4, 5 voneinander entspricht. Dies kann durch die Federn 27, 28 ausgeglichen werden.Furthermore, it may be possible that the distance of the fixed contact pairs 8.1, 8.2 of the fixed contact pairs 9.1, 9.2 does not correspond to the distance of the contact bridges 4, 5 from each other. This can be compensated by the
Wie aus den Figuren ersichtlich, weisen die beweglichen Kontakte 6.1, 6.2; 7.1, 7.2 einen halbkreisförmigen Querschnitt auf. Die Festkontakte 8.1, 8.2; 9.1, 9.2 sind bevorzugt mit einem V-förmigen Querschnitt ausgebildet. Durch diese Form der beweglichen Kontakte und der Festkontakte wird die Reibbewegung erleichtert.As can be seen from the figures, the movable contacts 6.1, 6.2; 7.1, 7.2 a semi-circular cross section. The fixed contacts 8.1, 8.2; 9.1, 9.2 are preferably formed with a V-shaped cross section. By this form of the movable contacts and the fixed contacts, the friction movement is facilitated.
Claims (12)
- Microswitch (1) comprising at least two contact points (10.1, 10.2; 11.1, 11.2) each with a movable contact (6.1, 6.2, 7.1, 7.2) and a fixed contact (8.1, 8.2, 9.1, 9.2), the movable contacts (6.1, 6.2, 7.1, 7.2) being arranged on a contact bridge (4, 5), it being possible to move the contact bridge (4, 5) by means of a ram (3) and it being possible to transfer the contact bridge from a first switching position, in which the contact points (10.1, 10.2; 11.1, 11.2) are open, into a second switching position, in which the contact points (10.1, 10.2; 11.1, 11.2) are closed, the contact bridge (4, 5) comprising at least one first lever (19, 20) arranged transversely to the longitudinal extension of the contact bridge (4, 5) and being mounted in such a way that when the contacts (6.1, 8.1; 6.2, 8.2; 7.1, 9.1; 7.2, 9.2) are being closed and opened the contact bridge (4, 5) executes a rotational movement about an axis of rotation running parallel to its longitudinal extension, characterised in that the at least one first lever (19, 20) of the contact bridge is mounted in a receiver (21, 22) in the ram (3), so the contact bridge (4, 5) is mounted at a defined point in the ram, the rotational movement of the contact bridge (4, 5) is fixed and therefore a frictional movement produced by the rotational movement at the mutually opposing contacts (6.1, 8.1; 6.2, 8.2; 7.1, 9.1; 7.2, 9.2) of each contact point (10.1, 10.2; 11.1, 11.2) transversely to the longitudinal extension of the contact bridge (4, 5) is forcibly actuated.
- Microswitch (1) according to claim 1, characterised in that the ram (3) comprises at least one upper abutment (17, 18), on which the contact bridge (4, 5) rests in the closed position, and at least one lower abutment (15, 16), on which the contact bridge (4, 5) rests in the open position, the upper abutment (17, 18) being arranged obliquely to the lower abutment (15, 16).
- Microswitch (1) according to claim 1 or 2, characterised in that the first lever (19, 20) is arranged centrally on the contact bridge (4, 5) between the two movable contacts (6.1, 6.2, 7.1, 7.2).
- Microswitch (1) according to any one of claims 1 to 3, characterised in that the contact bridge (4, 5) comprises an additional lever (23, 24) which is arranged opposite the first lever (19, 20) and is guided in the ram (3) in a guide (25, 26).
- Microswitch (1) according to any one of claims 1 to 4, characterised in that the contact bridge (4, 5) is mounted so as to be rotatable about an axis running transversely to the ram longitudinal axis and transversely to the longitudinal extension of the contact bridge (4, 5).
- Microswitch (1) according to any one of claims 1 to 5, characterised in that the contact bridge (4, 5) is mounted so as to be rotatable about the ram longitudinal axis.
- Microswitch (1) according to any one of claims 1 to 6, characterised in that the upper abutment (17, 18) of the ram (3) has a rounded supporting surface.
- Microswitch (1) according to any one of claims 1 to 7, characterised in that the microswitch (1) comprises at least one further contact bridge (5; 4) which is substantially identically constructed and mounted to the first contact bridge (4; 5).
- Microswitch (1) according to claim 8, characterised in that each of the contact bridges (4, 5) is supported on the ram (3) in the longitudinal direction thereof by means of a spring (27, 28), one end of the spring (27, 28) being connected to the contact bridge (4, 5) and the other end of the spring (27, 28) being arranged in a recess (31, 32) in the ram (3).
- Microswitch (1) according to any one of claims 8 or 9, characterised in that a centring protrusion (29, 30) for the spring (27, 28) is arranged on each contact bridge (4, 5).
- Microswitch (1) according to any one of claims 1 to 10, characterised in that the fixed contacts (8.1, 8.2, 9.1, 9.2) have a substantially V-shaped cross-section and the movable contacts (6.1, 6.2, 7.1, 7.2) have a substantially semi-circular cross-section.
- Microswitch (1) according to any one of claims 1 to 11, characterised in that the microswitch (1) comprises a housing (2) and the ram (3) is guided in the housing (2), the housing (2) comprising a centring part (13) which guides a centering element (14) of the ram (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007034989A DE102007034989B3 (en) | 2007-07-26 | 2007-07-26 | microswitch |
PCT/EP2008/005160 WO2009012858A1 (en) | 2007-07-26 | 2008-06-25 | Microswitch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2174330A1 EP2174330A1 (en) | 2010-04-14 |
EP2174330B1 true EP2174330B1 (en) | 2012-04-11 |
Family
ID=39682745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08759336A Active EP2174330B1 (en) | 2007-07-26 | 2008-06-25 | Microswitch |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP2174330B1 (en) |
JP (1) | JP2010534903A (en) |
KR (1) | KR101146175B1 (en) |
CN (1) | CN101816055B (en) |
AT (1) | ATE553490T1 (en) |
DE (1) | DE102007034989B3 (en) |
HK (1) | HK1143242A1 (en) |
TW (1) | TWI382435B (en) |
WO (1) | WO2009012858A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102074388A (en) * | 2009-11-20 | 2011-05-25 | 朱平远 | Switch with contact automatically cleaning function |
CN101950873B (en) * | 2010-09-19 | 2012-04-25 | 戴丁志 | Movable contact bridge member |
CN103681059B (en) * | 2012-09-21 | 2016-12-21 | 深圳市海洋王照明工程有限公司 | Lamp switch |
CN103681057A (en) * | 2012-09-21 | 2014-03-26 | 深圳市海洋王照明工程有限公司 | Emergency luminaire switch assembly structure |
CN103578842B (en) * | 2013-10-22 | 2014-11-26 | 国家电网公司 | Synchronous multistage breaker |
KR200480158Y1 (en) | 2014-05-20 | 2016-04-20 | 주식회사 우진기전 | Auxiliary switches having self-cleaning function |
CN104392850A (en) * | 2014-11-26 | 2015-03-04 | 宁波嘉林电子有限公司 | Multifunctional circuit changeover switch |
CN107068460A (en) * | 2017-03-14 | 2017-08-18 | 江苏高博锐电气有限公司 | A kind of microswitch |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US2758169A (en) | 1954-03-15 | 1956-08-07 | Gen Motors Corp | Electrical switch |
DE1738663U (en) * | 1955-06-07 | 1957-01-31 | Siemens Ag | CONTACT DEVICE FOR MULTIPLE BREAKERS. |
JPS43736Y1 (en) * | 1966-05-02 | 1968-01-17 | ||
FR1510980A (en) * | 1966-12-12 | 1968-01-26 | Unelec | Double-cut electrical device |
JPS4330981Y1 (en) * | 1967-04-14 | 1968-12-17 | ||
DE2132658A1 (en) * | 1971-06-30 | 1973-01-18 | Marquardt J & J | ELECTRIC SWITCH |
JPS5180673U (en) * | 1974-12-23 | 1976-06-26 | ||
DE2525467C3 (en) * | 1975-06-07 | 1983-04-21 | Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen | Contact arrangement |
JPS5929307Y2 (en) * | 1979-12-17 | 1984-08-23 | 三菱電機株式会社 | switchgear |
JPS6343323U (en) * | 1986-09-05 | 1988-03-23 | ||
JPH01121229U (en) * | 1988-02-12 | 1989-08-17 | ||
KR960025066U (en) * | 1994-12-28 | 1996-07-22 | Micro switch | |
DE19858755C1 (en) * | 1998-12-18 | 2000-06-08 | Euro Matsushita Electric Works | Contact unit, for an electromagnetic safety relay, comprises an undivided contact spring with a flexible torsion region between its fixed end and its contact points |
JP2000306460A (en) * | 1999-04-19 | 2000-11-02 | Hitachi Ltd | Panel and display device |
US6837729B2 (en) * | 2002-09-10 | 2005-01-04 | Tyco Electronics Corporation | High power electrical contactor with improved bridge contact mechanism |
DE10315243B3 (en) * | 2003-04-03 | 2004-08-26 | Siemens Ag | Electromechanical switching system for relays, switches and pushbuttons has main contact bridge providing contact path between pairs of fixed contacts |
-
2007
- 2007-07-26 DE DE102007034989A patent/DE102007034989B3/en not_active Expired - Fee Related
-
2008
- 2008-06-25 AT AT08759336T patent/ATE553490T1/en active
- 2008-06-25 KR KR1020107003693A patent/KR101146175B1/en not_active IP Right Cessation
- 2008-06-25 JP JP2010517284A patent/JP2010534903A/en active Pending
- 2008-06-25 EP EP08759336A patent/EP2174330B1/en active Active
- 2008-06-25 WO PCT/EP2008/005160 patent/WO2009012858A1/en active Application Filing
- 2008-06-25 CN CN200880100402.1A patent/CN101816055B/en not_active Expired - Fee Related
- 2008-07-22 TW TW097127869A patent/TWI382435B/en not_active IP Right Cessation
-
2010
- 2010-10-12 HK HK10109640.3A patent/HK1143242A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TW200905707A (en) | 2009-02-01 |
JP2010534903A (en) | 2010-11-11 |
CN101816055B (en) | 2013-04-10 |
CN101816055A (en) | 2010-08-25 |
HK1143242A1 (en) | 2010-12-24 |
WO2009012858A1 (en) | 2009-01-29 |
DE102007034989B3 (en) | 2009-03-12 |
EP2174330A1 (en) | 2010-04-14 |
KR20100034047A (en) | 2010-03-31 |
KR101146175B1 (en) | 2012-05-24 |
ATE553490T1 (en) | 2012-04-15 |
TWI382435B (en) | 2013-01-11 |
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