EP2728597B1 - Switchgear with a contact arrangement - Google Patents
Switchgear with a contact arrangement Download PDFInfo
- Publication number
- EP2728597B1 EP2728597B1 EP13191389.9A EP13191389A EP2728597B1 EP 2728597 B1 EP2728597 B1 EP 2728597B1 EP 13191389 A EP13191389 A EP 13191389A EP 2728597 B1 EP2728597 B1 EP 2728597B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- normally closed
- changeover
- normally
- normally open
- 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.)
- Not-in-force
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- 230000003628 erosive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910017727 AgNi Inorganic materials 0.000 description 1
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
-
- 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
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
- H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
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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
- H01H2001/145—Contacts characterised by the manner in which co-operating contacts engage by abutting by crossing each other, the cooperating contacts each having a contact making ridge perpendicular to each other
Definitions
- the invention relates to a switching device with a contact arrangement, which has a preferably fixed normally closed contact, a preferably fixed working contact and arranged between the normally closed contact and the normally open contact, preferably by an actuating element of the switching device, switching contact, in the rest position of the switching device to the normally closed contact and in Working position of the switching device is applied to the normally open contact.
- Such a switching device may in particular be a relay, but also a contactor, switch or button, wherein the switching device preferably has an actuating mechanism with an actuating element which is triggered manually or by an electrical and / or magnetic signal and the switching of the switching device from the rest position in the working position, in which it moves the changeover contact.
- the working position of the switching device is the position in which the changeover contact is brought by concern of the actuating element for abutment against the work contact or will. Accordingly, the rest position of the switching device, or the rest position of the changeover, the position in which the changeover is at a non-actuated actuator and rests against the normally closed contact.
- the actuating mechanism may be formed by a magnetic system, for example with a relay coil with a coil core, a yoke extending from the coil core, and an armature driving the changeover contact as the actuating element.
- the armature can act, for example, on a contact carrier of the changeover contact or be firmly connected to it, so that the contact carrier is moved with the changeover contact on actuation of the actuation element from the rest position into the working position.
- Such switching devices are, for example, known as a contactor, switch or button.
- Relays are often used to switch larger loads, which is closed by the design with a changeover contact both in the rest position and in the working position each a contact circuit.
- a normally open contact or normally open contact is referred to that contact, which is closed in the open position and in the working position.
- normally closed or normally closed that contact which is closed in the rest position and open in the working position.
- the contacts often have (flat) plane formed (large) bearing surfaces, which lie on each other in the contact case and form a flat contact point. Due to the large contact surface of the contact points that come into contact, only a small specific surface pressure arises. This is often not sufficient, for example, to destroy foreign layers formed by oxidations or deposits on the contact surface. However, this is necessary so that the foreign layer otherwise acting as an insulating layer is broken securely and there is a current flow, ie a contact. The breaking up of the foreign layers is also referred to as fringing of the applied voltage.
- the contacts are welded as short, rod-shaped sections on the contact springs or other contact carriers so that they are in the region of the free ends of their contact carrier, wherein the located on the one contact carrier contact along and the contact carrier located on the other contact transversely thereto runs.
- the attachment to the contact carriers which usually takes place by welding, is complicated and problematic because the rod-shaped sections must be precisely aligned during the welding process and may not be permanent in the event of a poor weld seam.
- the DE 31 28 929 C2 as a preferred contact arrangement before a contact with a ring or oval-shaped extending contact line, while the mating contact has a straight and transversely to the longitudinal course of its contact carrier extending contact line.
- these configurations are in FIGS 3 and 4 of the DE 31 28 929 C2 shown.
- a disadvantage here is that the mutually interacting contacts of the normally open contact or the normally closed contact and the changeover contact are formed differently, which in particular requires different manufacturing processes.
- the contact arrangement described is indeed suitable for switching comparatively small currents, because a high surface force is generated.
- the switching arrangement for example, on the quiescent side only low signal currents and on the working side high load currents are switched, the arrangement is disadvantageous because of the small contact area for the switching of large currents, because the switching arrangement is very hot due to the small cross section of the contact points and thus wear the contacts quickly.
- the contact surface of the point contact is formed by a flat surface and a spherical surface, which bear against each other in one point.
- the contact surface of the point contact is formed by a flat surface and a spherical surface, which bear against each other in one point.
- random actual contact forms can form in which a large number of micro-tips (micro-contact points) comes into contact with one another. In a point contact, the distribution of microtips is much more compact.
- the DE 2 226 678 A describes disconnectors in telecommunication systems with intersecting contact elements of two contact-cooperating contact springs, wherein the intersecting contact elements are formed as imprinted directly into the material of the contact spring and the plane of the contact spring superior beads.
- the FR 1,553,062 describes a similar arrangement of contact elements, which are applied as cylindrical rod sections on the contacts themselves. From the EP 1 722 382 A2 is the formation of crown contact heads with a protruding over the contact surface crown for increasing the contact reliability known by a high specific surface pressure is achieved.
- the DE 36 27 459 A1 two intersecting contact lines of a switching device, which consist of a welded micro-profile.
- the micro-profile in the contact-forming tip region has a layer of gold or a gold alloy.
- circuit breaker and residual current circuit breaker is in the DE 81 09 089 U describes a contact device, in each case arranged on a contact carrier, a contact piece made of contact material and connected to an electrical connection line. In the narrower contact area, the contact piece is riveted through the contact carrier and is directly connected to the connecting line.
- WO2008 / 086038 discloses a switching device according to the preamble of claim 1
- Object of the present invention is therefore to propose a switching device with a contact arrangement, which can switch on the one contact side, in particular the normally closed side, signal loads and on the other contact side, for example, the working contact side, compared to the signal loads large work loads, without that in the Production of different special contacts must be used.
- a switching device with the features of claim 1.
- the areal contact point of the surface contact differs from the point-shaped contact point the cross contact by a large compared to the cross-contact surface.
- the contact surface or the contact point is achieved by the point of contact of two line-shaped elevations of the two contacts which come into contact with each other, which touch only at one point.
- This is achieved simply by a (preferred according to the invention) rectilinear formation of the linear increase of the two contacts coming into contact with each other or their contact surfaces, wherein the line-shaped elevation on the two contacts obliquely, i. not parallel, aligned.
- the line-shaped elevation on the two contacts obliquely, i. not parallel, aligned.
- the other, not designed as a cross-contact of the contact arrangement of the switching device proposed by the invention has as a surface contact on two parallel surfaces that contact each other over a large area in contact contact compared to the only point-like contact of the linear elevations of the cross-contact.
- the non-contact surface and the working contact surface at opposite ends of the changeover are arranged.
- the changeover contact may be formed as a continuous contact having on one side of the linear, in particular linear, increase to form a cross-contact and on the other side a large area compared to the linear increase, planar support surface for forming the surface contact ,
- Such a contact is easy to produce and requires only a basic type of contact, which can be used as a changeover contact and is able to form depending on the processing at both contact surfaces or contact points.
- the normally closed contact, the normally open contact and the changeover contact are designed as rivet contacts, which are riveted into openings of a preferably conductive contact carrier.
- the contact carrier may for example be formed from a metal sheet, which is optionally resilient, to adjust the desired surface pressure and / or to switch the changeover between the working position and the rest position.
- the contact carrier of a contact in particular of the changeover contact, can be designed to be adjustable by the actuating element.
- the contact carrier in particular of the changeover contact, can be a contact carrier that is adjustable against a bias or an elastic and / or contact carrier that is biased in one direction, so that the contact carrier always returns to its rest position (ie without attacking the actuating element), even if the actuating element is the one Contact carrier for the switching operation of the switching device had transferred to its working position.
- the contact surface of the normally closed contact or of the normally open contact and the corresponding mating contact surface of the changeover contact ie the normally closed contact surface or the working contact surface of the changeover contact, which are designed as cross contacts
- the contact surface of the normally closed contact or of the normally open contact and the corresponding mating contact surface of the changeover contact can be formed as a cross contact during riveting or have been trained.
- linear recesses may be formed in the rivet dies, so that during pressing in the riveting the linear increase in the contact surface of the normally closed contact (or the normally open contact) and the corresponding mating contact surface of the changeover, ie the normally closed contact surface (or the work contact surface) of the changeover to train.
- the respective other contact surface is formed as a large area surface contact by riveting.
- the basic shape of the contacts can be the same before riveting.
- the inventive design of the contacts as a cross contact on the one contact side and large surface contact on the other contact side in each case during riveting, wherein the base contact the same contact is made of a deformable in the riveting, electrically conductive material.
- the material used is in particular AgSnO or AgNi.
- the contact carrier of the normally open contact and the normally closed contact and preferably also of the changeover contact are constructed identically.
- the dimensions may be the same and the through hole for riveting the contacts may be positioned the same.
- the contact carrier may be formed as a rectangular plate with a narrower compared to the longitudinal side transverse side.
- the through openings for the riveting of the contacts are then preferably arranged offset from the center in the direction of one end of the longitudinal sides of the contact carrier, wherein the passage opening is formed centrally with respect to the transverse side of the contact carrier.
- the normally closed contact or the normally open contact during riveting can be designed as a cross contact, since both contact carriers are identical.
- the riveting can also be done only after the installation of the contact carrier and thereby the desired contact shape can be set on the normally closed side and the working contact side.
- FIG. 1 is a well-known from the prior art contact arrangement 1 of a switching device, in particular a not-shown otherwise relay shown.
- the contact arrangement 1 has a normally closed contact 2 and a contact 3 arranged opposite the normally closed contact 2. Between the normally closed contact 2 and the normally open contact 3, a changeover contact 4 is formed, which has a rest contact surface 5 for abutment against the contact surface 6 of the normally closed contact 2 on the side facing the normally closed contact 2 when the switching device is not actuated.
- the changeover 4 is moved in the direction of the double arrow 7 towards the normally open contact 3, so that a working contact 3 facing working contact surface 8 of the changeover 4 abuts when operating the switching device to the contact surface 9 of the normally-open contact 3.
- the normally closed contact 2, the normally open contact 3 and the changeover contact 4 are fastened in each case to contact carriers 10 fastened or mounted in the switching device by riveting, in that the normally closed contact 2, the normally open contact 3 and the changeover contact 4 pass through FIG. 1 not shown openings of the contact carrier when riveting sections are pressed and pressed flat, so that the normally closed contact 2, the normally open contact 3 and the changeover contact 4 are reliably fixed to the contact carrier 10.
- the movement of the changeover 4 according to double arrow 7 is characterized by a in FIG. 1 not shown actuating member causes, which is part of the switching device.
- a relay as a switching device, this may be a magnetic system with a relay coil and a coil core which transmits a magnetic field in the case of concern of a DC voltage signal via the yoke to an armature which acts on the contact carrier 10 of the changeover 4 to the Contact carrier 10 when operating the switching device from the in FIG. 1 shown rest position to spend in the above-described working position in which the changeover 4 abuts the working contact 3.
- FIG. 2 the contact surfaces 8, 9 of the changeover 4 and the work contact 3 are shown in plan view. These are designed as circular surface contacts, which - as in FIG. 1 to recognize - are aligned substantially parallel. This applies at least to the centers of the circular contact surfaces 8, 9, in which touch the working contact surface 8 and the contact surface 9 of the normally-open contact 3 upon actuation of the switching device.
- This area is also called contact area 11.
- This contact area 11 corresponds to the shape of the contact area, i.
- a large-area surface contact is formed in a circular form, on which form many individual points indicated by dots 12 at the plants by means of microscopic height differences, via which an electrical line between the make contact 3 and changeover contact 4 is reached.
- the voltage frits, so that the entire contact area 11 can be referred to as a contact point.
- FIG. 1 are formed in the same way as described on the working contact page previously.
- the working contact side is also formed in the invention in the same way.
- these large surface contacts of the working contact surface and the contact surface of the normally open contact are disadvantageous on the normally closed contact side, when only a signal load which is substantially smaller than the workload on the normally open side is to be switched on this side.
- the specific surface pressure of the contact surfaces 5, 6 on the normally closed side of the switching arrangement 1 according to the prior art is so small that it is often not sufficient to destroy the foreign layers on the contact surface.
- the contact arrangement 21 proposes a different embodiment of the contact surfaces on the normally closed contact side.
- FIG. 3 Comparable to the contact arrangement 1 according to the prior art ( FIG. 1 ) shows a normally closed contact 22, a normally open contact 23 and a changeover contact 24, wherein the changeover contact 24 as a rest contact surface 25 has a straight line-shaped elevation, which rests against a similarly linear contact surface 26 of the normally closed contact 22.
- the changeover contact 24 Upon actuation of the switching device, the changeover contact 24 is moved in the direction of the double arrow 27 toward the working contact 23, whereby the working contact surface 28 of the changeover 24 on the contact surface 29 of the normally-open contact 23 applies.
- These contact surfaces 28, 29 are corresponding FIG. 2 trained so that in FIG. 2 Also, the reference numerals of this embodiment are listed.
- the contact area 11 and the contact points 12 are formed in the same way.
- the normally closed contact 22, the normally open contact 23 and the changeover contact 24 are riveted to contact carriers 30 in a comparable manner.
- FIG. 4 is a superposition of the normally closed contact surface 25 of the changeover 24 and the contact surface 26 of the normally closed contact 22 shown, which are each formed as a straight line-shaped elevations on the normally closed contact 22 and the changeover 24.
- the linear rest contact surface 25 and the linear contact surface 26 of the normally closed contact 22 are arranged at right angles to each other at right angles to each other, so that the intersection of the contact surfaces 25, 26 is a punctiform contact region 31 with a punctiform contact point 32 which coincides with the contact region 31 , trains.
- Such an arrangement of contact and mating contact is also referred to as a cross contact.
- a switching device with a contact arrangement 21 is thus provided by the proposed contact arrangement 21, which switch weak signal loads reliably at one contact point, in particular the normally closed contact point, and can switch large loads at the other contact point, preferably the work contact point.
- a particular advantage in this case results from the fact that the normally closed contact 22 and the changeover contact 24 and the working contact 23 are riveted to the contact carrier 30.
- the necessary rivet pressure on the contact surface of the normally closed contact 22 or changeover contact 24 applying rivet shapes can be easily by a linear grade depression in the dies be realized individually, so that for the contact arrangement according to the invention for the normally closed contact 22, the working contact 23 and the Umschaltitch 24 basically the same contact basic forms can be used, which are formed by suitable dies in the riveting either as a large area contacts or cross contacts, preferably the Normally closed contact as a cross contact and the normally open contact are designed as a large surface contact. Thus, no special contacts are needed.
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- Push-Button Switches (AREA)
- Manufacture Of Switches (AREA)
Description
Die Erfindung betrifft ein Schaltgerät mit einer Kontaktanordnung, welche einen vorzugsweise feststehenden Ruhekontakt, einen vorzugsweise feststehenden Arbeitskontakt und einen zwischen dem Ruhekontakt und dem Arbeitskontakt angeordneten, vorzugsweise durch ein Betätigungselement des Schaltgeräts bewegbaren, Umschaltkontakt aufweist, der in Ruhestellung des Schaltgeräts an dem Ruhekontakt und in Arbeitsstellung des Schaltgeräts an dem Arbeitskontakt anliegt. Dazu weist der Umschaltkontakt eine Ruhekontaktfläche zum Anliegen an einer bzw. der Kontaktfläche des Ruhekontakts und eine Arbeitskontaktfläche zum Anliegen an einer bzw. der Kontaktfläche des Arbeitskontakts auf.The invention relates to a switching device with a contact arrangement, which has a preferably fixed normally closed contact, a preferably fixed working contact and arranged between the normally closed contact and the normally open contact, preferably by an actuating element of the switching device, switching contact, in the rest position of the switching device to the normally closed contact and in Working position of the switching device is applied to the normally open contact. For this purpose, the changeover contact on a non-contact surface for abutment on one or the contact surface of the normally closed contact and a working contact surface for abutment on one or the contact surface of the normally-open contact.
Ein derartiges Schaltgerät kann insbesondere ein Relais, aber auch ein Schaltschütz, Schalter oder Taster sein, wobei das Schaltgerät vorzugsweise einen Betätigungsmechanismus mit einem Betätigungselement aufweist, das manuell oder durch ein elektrisches und/oder magnetisches Signal ausgelöst wird und das Schalten des Schaltgeräts aus der Ruhestellung in die Arbeitsstellung ausführt, in dem es den Umschaltkontakt bewegt. Die Arbeitsstellung des Schaltgerätes, respektive die Arbeitsstellung des Umschaltkontakts, ist die Stellung, in der der Umschaltkontakt durch Betätigen des Betätigungselements zum Anliegen an dem Arbeitskontakt gebracht ist bzw. wird. Entsprechend ist die Ruhestellung des Schaltgeräts, respektive die Ruhestellung des Umschaltkontakts, die Stellung, in der sich der Umschaltkontakt bei einem nicht betätigten Betätigungselement befindet und an dem Ruhekontakt anliegt.Such a switching device may in particular be a relay, but also a contactor, switch or button, wherein the switching device preferably has an actuating mechanism with an actuating element which is triggered manually or by an electrical and / or magnetic signal and the switching of the switching device from the rest position in the working position, in which it moves the changeover contact. The working position of the switching device, respectively the working position of the changeover contact, is the position in which the changeover contact is brought by concern of the actuating element for abutment against the work contact or will. Accordingly, the rest position of the switching device, or the rest position of the changeover, the position in which the changeover is at a non-actuated actuator and rests against the normally closed contact.
Im Falle eines typischen, als Relais ausgebildeten Schaltgeräts kann der Betätigungsmechanismus durch ein Magnetsystem gebildet sein, beispielsweise mit einer Relaisspule mit Spulenkern, einem sich von dem Spulenkern erstreckenden Joch und einem den Umschaltkontakt antreibenden Anker als Betätigungselement. Der Anker kann dazu beispielsweise an einem Kontaktträger des Umschaltkontakt angreifen oder mit diesem fest verbunden sein, so dass der Kontaktträger mit dem Umschaltkontakt bei Betätigen des Betätigungselements bewegt aus der Ruhestellung in die Arbeitsstellung bewegt wird.In the case of a typical, designed as a relay switching device, the actuating mechanism may be formed by a magnetic system, for example with a relay coil with a coil core, a yoke extending from the coil core, and an armature driving the changeover contact as the actuating element. For this purpose, the armature can act, for example, on a contact carrier of the changeover contact or be firmly connected to it, so that the contact carrier is moved with the changeover contact on actuation of the actuation element from the rest position into the working position.
Derartige Schaltgeräte sind bspw. als Schaltschütz, Schalter oder Taster bekannt. Eine besonders häufige Anwendungsform, auf die sich die vorliegende Erfindung auch bevorzugt bezieht, bilden Relais (Schaltrelais), die durch einen Schaltimpuls auf das Magnetsystem des Relais ein Umschalten des Umschaltkontakts bewirken. Relais werden häufig dazu eingesetzt, größere Lasten zu schalten, wobei durch die Bauart mit einem Umschaltkontakt sowohl in der Ruhestellung als auch in der Arbeitsstellung jeweils ein Kontaktkreis geschlossen ist. Als Arbeitskontakt oder Schließer bezeichnet man dabei denjenigen Kontakt, der in Ruhestellung offen und in Arbeitsstellung geschlossen ist. Entsprechend bezeichnet man als Ruhekontakt oder Öffner denjenigen Kontakt, der in Ruhestellung geschlossen und in Arbeitsstellung offen ist.Such switching devices are, for example, known as a contactor, switch or button. A particularly frequent form of application, to which the present invention also preferably relates, form relays (switching relays), which cause a switching of the changeover by a switching pulse to the magnet system of the relay. Relays are often used to switch larger loads, which is closed by the design with a changeover contact both in the rest position and in the working position each a contact circuit. As a normally open contact or normally open contact is referred to that contact, which is closed in the open position and in the working position. Accordingly referred to as normally closed or normally closed that contact, which is closed in the rest position and open in the working position.
Die Kontakte weisen häufig als plane Ebene ausgebildete (große) Auflageflächen auf, die im Kontaktfall aufeinander liegen und eine flächige Kontaktstelle ausbilden. Aufgrund der großen Auflagefläche der miteinander in Kontakt tretenden Kontaktstellen entsteht nur ein kleiner spezifischen Flächendruck. Dieser reicht oftmals nicht aus, um beispielsweise durch Oxidationen oder Ablagerungen auf der Kontaktoberfläche ausgebildete Fremdschichten zu zerstören. Dies ist jedoch notwendig, damit die ansonsten als Isolationsschicht wirkende Fremdschicht sicher aufgebrochen wird und es zu einem Stromfluss, d.h. einer Kontaktierung, kommt. Das Aufbrechen der Fremdschichten wird auch als Durchfritten der anliegenden Spannung bezeichnet.The contacts often have (flat) plane formed (large) bearing surfaces, which lie on each other in the contact case and form a flat contact point. Due to the large contact surface of the contact points that come into contact, only a small specific surface pressure arises. This is often not sufficient, for example, to destroy foreign layers formed by oxidations or deposits on the contact surface. However, this is necessary so that the foreign layer otherwise acting as an insulating layer is broken securely and there is a current flow, ie a contact. The breaking up of the foreign layers is also referred to as fringing of the applied voltage.
Dieses Problem ist grundsätzlich bekannt und wird beispielsweise in der
Normalerweise sind aber die Kontakte als kurze, stabförmige Abschnitte auf den Kontaktfedern oder sonstigen Kontaktträgern so aufgeschweißt, dass sie sich im Bereich der freien Enden ihrer Kontaktträger befinden, wobei der an dem einen Kontaktträger befindlichen Kontakt längs und der an dem anderen Kontaktträger befindliche Kontakt quer hierzu verläuft. Hierbei wird jedoch als nachteilig empfunden, dass die meist durch Schweißen erfolgende Anbringung an den Kontaktträgern aufwendig und problematisch ist, weil die stabförmigen Abschnitte bei dem Schweißvorgang genau ausgerichtet werden müssen und bei einer schlechten Schweißnaht ggf. nicht dauerhaft sind.Normally, however, the contacts are welded as short, rod-shaped sections on the contact springs or other contact carriers so that they are in the region of the free ends of their contact carrier, wherein the located on the one contact carrier contact along and the contact carrier located on the other contact transversely thereto runs. In this case, however, it is considered to be disadvantageous that the attachment to the contact carriers, which usually takes place by welding, is complicated and problematic because the rod-shaped sections must be precisely aligned during the welding process and may not be permanent in the event of a poor weld seam.
Zur Vermeidung dieser Schwierigkeiten schlägt die
Aus dem Buch Erk/Schmelzle, Grundlagen der Schaltgerätetechnik, Springer-Verlag, 1974 sind in Kapitel 8 als Kontaktstücke, die den elektrischen Kontakt herbeiführen, Flächenkontakte, Linienkontakte und Punktkontakte bekannt. Die Kontaktfläche des Punktkontakts wird dabei durch eine plane Fläche und eine Kugeloberfläche gebildet, die in einem Punkt aneinander anliegen. Insbesondere bei Flächenkontakten können sich aufgrund der mikroskopischen Struktur der Kontaktflächen zufällige tatsächliche Kontaktformen bilden, bei denen eine Vielzahl von Mikrospitzen (Mikrokontaktstellen) miteinander in Kontakt kommt. Bei einem Punktkontakt ist die Verteilung der Mikrospitzen deutlich kompakter.From the book Erk / Schmelzle, Basics of switching device technology, Springer-Verlag, 1974 are in Chapter 8 as contact pieces, which cause the electrical contact, surface contacts, line contacts and point contacts known. The contact surface of the point contact is formed by a flat surface and a spherical surface, which bear against each other in one point. Particularly in the case of surface contacts, due to the microscopic structure of the contact surfaces, random actual contact forms can form in which a large number of micro-tips (micro-contact points) comes into contact with one another. In a point contact, the distribution of microtips is much more compact.
Die
In ähnlicher Weise offenbart die
In allen diesen Fällen sind jeweils sämtliche Kontakte der Schalteinrichtungen gleich aufgebaut.In all these cases, all the contacts of the switching devices are the same structure.
Für Leitungsschutz- und Fehlerstromschutzschalter wird in der
Aufgabe der vorliegenden Erfindung ist es daher, ein Schaltgerät mit einer Kontaktanordnung vorzuschlagen, die auf der einen Kontaktseite, insbesondere der Ruhekontaktseite, Signallasten und auf der anderen Kontaktseite, beispielsweise der Arbeitskontaktseite, im Vergleich zu den Signallasten große Arbeitslasten schalten kann, ohne dass bei der Herstellung unterschiedliche Sonderkontakte verwendet werden müssen.Object of the present invention is therefore to propose a switching device with a contact arrangement, which can switch on the one contact side, in particular the normally closed side, signal loads and on the other contact side, for example, the working contact side, compared to the signal loads large work loads, without that in the Production of different special contacts must be used.
Diese Aufgabe wird erfindungsgemäß durch ein Schaltgerät mit den Merkmalen des Anspruchs 1 gelöst. Bei dem Schaltgerät der eingangs genannten Art ist dabei insbesondere vorgesehen, dass die Kontaktfläche des Ruhekontakts und die entsprechende Ruhekontaktfläche als Gegenkontaktfläche des Umschaltkontakts als Kreuzkontakt ausgebildet sind, während die Kontaktfläche des Arbeitskontakts und die entsprechende Arbeitskontaktfläche als Gegenkontaktfläche des Umschaltkontakts als Flächenkontakt mit einer flächig ausgebildeten Kontaktstelle ausgebildet sind. Die flächig ausgebildete Kontaktstelle des Flächenkontakts unterscheidet sich von der punktförmig ausgebildeten Kontaktstelle des Kreuzkontakts durch eine im Vergleich zu dem Kreuzkontakt große Auflagefläche.This object is achieved by a switching device with the features of
Bei dem Kreuzkontakt wird die Kontaktfläche bzw. die Kontaktstelle durch den Berührungspunkt zweier linienförmiger Erhöhungen der beiden miteinander in Berührung tretenden Kontakte erreicht, die sich nur in einem Punkt berühren. Dies wird einfach durch eine (erfindungsgemäß bevorzugte) geradlinige Ausbildung der linienförmigen Erhöhung der beiden miteinander in Berührung tretenden Kontakte bzw. deren Kontaktflächen erreicht, wobei die linienförmige Erhöhung auf den beiden Kontakten schräg, d.h. nicht parallel, ausgerichtet sind. Bevorzug wird ein Winkel von 90° zwischen den beiden geraden, linienförmigen Erhöhungen.In the cross-contact, the contact surface or the contact point is achieved by the point of contact of two line-shaped elevations of the two contacts which come into contact with each other, which touch only at one point. This is achieved simply by a (preferred according to the invention) rectilinear formation of the linear increase of the two contacts coming into contact with each other or their contact surfaces, wherein the line-shaped elevation on the two contacts obliquely, i. not parallel, aligned. Favor is an angle of 90 ° between the two straight, line-shaped elevations.
Der andere, nicht als Kreuzkontakt ausgebildete Kontakt der Kontaktanordnung des erfindungsgemäß vorgeschlagenen Schaltgeräts weist als Flächenkontakt zwei parallel zueinander ausgerichtete Oberflächen auf, die großflächig miteinander in kontaktierende Berührung treten im Vergleich zu der nur punktförmigen Berührung der linienförmigen Erhöhungen des Kreuzkontaktes.The other, not designed as a cross-contact of the contact arrangement of the switching device proposed by the invention has as a surface contact on two parallel surfaces that contact each other over a large area in contact contact compared to the only point-like contact of the linear elevations of the cross-contact.
Aufgrund von Unebenheiten der Flächenkontakte entstehen an der vergleichsweise großen Auflagefläche in Abgrenzung zu dem Kreuzkontakt bei Anlage zunächst viele einzelne Kontaktierungsstellen, die entsprechend jeweils nur einen kleinen spezifischen Flächendruck aufweist. Bei dem Schalten einer großen Last frittet die Spannung durch eine möglicherweise auf der Kontaktfläche des Flächenkontakts ausgebildete Fremdschicht durch, so dass es zu einem großflächig leitenden Kontakt zwischen der Kontaktfläche des Arbeitskontakts und der die Gegenkontaktfläche des Umschaltkontakts bildenden Arbeitskontaktfläche kommt. Dies entspricht der erfindungsgemäß bevorzugten Ausführung, in der der Arbeitskontakt als Flächenkontakt und der Ruhekontakt als Kreuzkontakt ausgebildet ist. Grundsätzlich ist es erfindungsgemäß natürlich auch möglich, den Flächenkontakt auf der Seite des Ruhekontakts und den Kreuzkontakt auf der Seite des Arbeitskontakts auszubilden.Due to unevenness of the surface contacts arise at the comparatively large contact surface in contrast to the cross contact at plant initially many individual contact points, which has correspondingly only a small specific surface pressure. When switching a large load, the voltage frits through a possibly formed on the contact surface of the surface contact foreign layer, so that there is a large-area conductive contact between the contact surface of the normally open contact and the mating contact surface of the changeover contact forming Arbeitskontaktfläche. This corresponds to the preferred embodiment according to the invention, in which the normally open contact is designed as a surface contact and the normally closed contact is designed as a cross contact. Basically, it is natural in the invention also possible to form the surface contact on the side of the normally closed contact and the cross contact on the side of the normally open contact.
Aufgrund der im Vergleich zu einem punktförmigen Kontakt bei dem Kreuzkontakt großflächigen Kontaktstelle des Flächenkontakts lassen sich auch hohe Lasten auf der Arbeitskontaktseite schalten. Gleichzeitig kann auf der Ruhekontaktseite aufgrund der Verwendung des Kreuzkontaktes auch nur eine kleine Signallast geschaltet werden, da aufgrund der Verwendung des Kreuzkontakts eine nur punktförmige Kontaktstelle mit hohem Flächendruck entsteht, die selbst bei im Vergleich zu der Arbeitslast kleinen Signallast zuverlässig kontaktiert. Dies gilt auch dann, wenn auf der Arbeitskontaktseite eine so große Last geschaltet wird, dass dort ein sogenannter Kontaktabbrand entsteht, bei dem kleine Partikel von der großen Auflagefläche des Flächenkontakts gelöst und auf die Kontaktfläche des Signalkontakts geraten können. Auch derartige, Fremdschichten bildende Partikel werden durch den hohen spezifischen Flächendruck des Kreuzkontakts durchbrochen.Due to the large compared to a point-like contact in the cross contact point of contact of the surface contact can be switched high loads on the working contact side. At the same time, due to the use of the cross contact, only a small signal load can be switched on the normally closed contact side because, due to the use of the cross contact, a punctiform contact point with a high surface pressure arises which reliably contacts even when the signal load is small compared to the workload. This is true even if on the working contact side such a large load is switched that there is a so-called contact erosion, in which small particles can be detached from the large contact surface of the surface contact and advised on the contact surface of the signal contact. Even such, foreign layers forming particles are broken by the high specific surface pressure of the cross-contact.
Gemäß einer besonders bevorzugten Ausführungsform ist vorgesehen, dass die Ruhekontaktfläche und die Arbeitskontaktfläche an entgegengesetzten Enden des Umschaltkontaktes, d.h. voneinander wegweisend und insbesondere im Wesentlichen parallel zu einander, angeordnet sind. In diesem Fall kann der Umschaltkontakt als ein durchgängiger Kontakt ausgebildet sein, der auf der einen Seite die linienförmige, insbesondere geradlinienförmige, Erhöhung zum Bilden eines Kreuzkontakts und auf der anderen Seite eine im Vergleich zu der linienförmigen Erhöhung großflächige, plane Auflagefläche zum Ausbilden des Flächenkontakts aufweist. Ein solcher Kontakt ist einfach herstellbar und erfordert nur einen Grundtypus von Kontakt, der als Umschaltkontakt verwendet werden kann und in der Lage ist, je nach Bearbeitung bei beide Kontaktflächen bzw. Kontaktstellen auszubilden.According to a particularly preferred embodiment it is provided that the non-contact surface and the working contact surface at opposite ends of the changeover, that are pointing away from each other and in particular substantially parallel to each other, are arranged. In this case, the changeover contact may be formed as a continuous contact having on one side of the linear, in particular linear, increase to form a cross-contact and on the other side a large area compared to the linear increase, planar support surface for forming the surface contact , Such a contact is easy to produce and requires only a basic type of contact, which can be used as a changeover contact and is able to form depending on the processing at both contact surfaces or contact points.
In einer besonders bevorzugten Weiterbildung des erfindungsgemäß vorgeschlagenen Schaltgeräts ist vorgesehen, dass der Ruhekontakt, der Arbeitskontakt und der Umschaltkontakt als Nietkontakte ausgebildet sind, die in Öffnungen eines vorzugsweise leitenden Kontaktträgers eingenietet sind. Die Kontaktträger können beispielsweise aus einem Blech gebildet sein, das gegebenenfalls federelastisch ist, um den gewünschten Flächendruck einzustellen und/oder den Umschaltkontakt zwischen der Arbeitsstellung und der Ruhestellung zu schalten.In a particularly preferred development of the switching device proposed according to the invention, it is provided that the normally closed contact, the normally open contact and the changeover contact are designed as rivet contacts, which are riveted into openings of a preferably conductive contact carrier. The contact carrier may for example be formed from a metal sheet, which is optionally resilient, to adjust the desired surface pressure and / or to switch the changeover between the working position and the rest position.
In einer bevorzugten Ausführungsform kann der Kontaktträger eines Kontakts, insbesondere des Umschaltkontakts, durch das Betätigungselement verstellbar ausgebildet sein. Beispielsweise kann der Kontaktträger insbesondere des Umschaltkontakts ein gegen eine Vorspannung verstellbarer Kontaktträger oder ein elastischer und/oder in einer Richtung vorgespannter Kontaktträger sein, so dass der Kontaktträger im Ruhezustand (d.h. ohne Angriff des Betätigungselements) immer in seine Ruhestellung zurückkehrt, auch wenn das Betätigungselement den Kontaktträger für den Schaltvorgang des Schaltgeräts in seine Arbeitsstellung überführt hatte.In a preferred embodiment, the contact carrier of a contact, in particular of the changeover contact, can be designed to be adjustable by the actuating element. For example, the contact carrier, in particular of the changeover contact, can be a contact carrier that is adjustable against a bias or an elastic and / or contact carrier that is biased in one direction, so that the contact carrier always returns to its rest position (ie without attacking the actuating element), even if the actuating element is the one Contact carrier for the switching operation of the switching device had transferred to its working position.
Um die Herstellung und den Aufbau der Schaltanordnung weiter zu vereinfachen können die Kontaktfläche des Ruhekontakts oder des Arbeitskontakts und die entsprechende Gegenkontaktfläche des Umschaltkontakts, d.h. die Ruhekontaktfläche oder die Arbeitskontaktfläche des Umschaltkontakts, die als Kreuzkontakt ausgebildet sind, während des Vernietens als Kreuzkontakt ausgebildet werden bzw. ausgebildet worden sein. Erfindungsgemäß können dazu linienförmige Vertiefungen in den Nietgesenken ausgebildet sein, so dass sich während des Anpressens bei dem Vernieten die linienförmige Erhöhung in der Kontaktfläche des Ruhekontakts (oder des Arbeitskontakts) und die entsprechende Gegenkontaktfläche des Umschaltkontakts, d.h. die Ruhekontaktfläche (beziehungsweise die Arbeitskontaktfläche) des Umschaltkontakts, ausbilden.To further simplify the manufacture and construction of the switching arrangement, the contact surface of the normally closed contact or of the normally open contact and the corresponding mating contact surface of the changeover contact, ie the normally closed contact surface or the working contact surface of the changeover contact, which are designed as cross contacts, can be formed as a cross contact during riveting or have been trained. According to the invention, linear recesses may be formed in the rivet dies, so that during pressing in the riveting the linear increase in the contact surface of the normally closed contact (or the normally open contact) and the corresponding mating contact surface of the changeover, ie the normally closed contact surface (or the work contact surface) of the changeover to train.
Wenn die Gegenfläche bei dem Vernieten keine linienförmige Vertiefung aufweist, sondern eine plane Anlagefläche hat, wird die jeweils andere Kontaktfläche als großflächiger Flächenkontakt durch das Vernieten gebildet.If the mating surface does not have a linear depression during riveting, but instead has a planar contact surface, the respective other contact surface is formed as a large area surface contact by riveting.
Die Grundform der Kontakte kann vor dem Vernieten dabei gleich sein. Somit kann die erfindungsgemäße Ausbildung der Kontakte als Kreuzkontakt auf der einen Kontaktseite und großflächiger Flächenkontakt auf der anderen Kontaktseite jeweils bei dem Vernieten erfolgen, wobei als Grundkontakt derselbe Kontakt aus einem sich bei dem Vernieten verformbaren, elektrisch leitenden Material aufgebaut ist. Als Material kommt insbesondere AgSnO oder AgNi in Frage.The basic shape of the contacts can be the same before riveting. Thus, the inventive design of the contacts as a cross contact on the one contact side and large surface contact on the other contact side in each case during riveting, wherein the base contact the same contact is made of a deformable in the riveting, electrically conductive material. The material used is in particular AgSnO or AgNi.
Eine besonders hohe Flexibilität beim Bestücken des Schaltgeräts mit der Kontaktanordnung lässt sich erreichen, wenn die Kontaktträger des Arbeitskontakts und des Ruhekontakts sowie vorzugsweise auch des Umschaltkontakts identisch aufgebaut sind. Insbesondere können die Abmessungen gleich und die Durchgangsöffnung für das Vernieten der Kontakte gleich positioniert sein. Beispielsweise können die Kontaktträger als rechteckige Plättchen mit einer im Vergleich zur Längsseite schmaleren Querseite ausgebildet sein. Die Durchgangsöffnungen für das Vernieten der Kontakte sind dann vorzugsweise aus der Mitte hin in Richtung eines Endes der Längsseiten des Kontaktträgers versetzt angeordnet, wobei die Durchgangsöffnung bezogen auf die Querseite des Kontaktträgers mittig ausgebildet ist. Je nach Einbau der Kontaktträger können dann der Ruhekontakt oder der Arbeitskontakt beim Vernieten als Kreuzkontakt ausgebildet werden, da beide Kontaktträger identisch sind. Gleiches gilt für den Umschaltkontaktträger, der jeweils um 180° verdreht eingebaut werden kann, je nachdem ob der Ruhekontakt oder der Arbeitskontakt als Kreuzkontakt ausgebildet werden soll. Alternativ kann das Vernieten auch erst nach dem Einbau der Kontaktträger erfolgen und dabei die gewünschte Kontaktform auf der Ruhekontaktseite und der Arbeitskontaktseite eingestellt werden.A particularly high flexibility when equipping the switching device with the contact arrangement can be achieved if the contact carrier of the normally open contact and the normally closed contact and preferably also of the changeover contact are constructed identically. In particular, the dimensions may be the same and the through hole for riveting the contacts may be positioned the same. For example, the contact carrier may be formed as a rectangular plate with a narrower compared to the longitudinal side transverse side. The through openings for the riveting of the contacts are then preferably arranged offset from the center in the direction of one end of the longitudinal sides of the contact carrier, wherein the passage opening is formed centrally with respect to the transverse side of the contact carrier. Depending on the installation of the contact carrier, the normally closed contact or the normally open contact during riveting can be designed as a cross contact, since both contact carriers are identical. The same applies to the Umschaltkontaktträger, which can be installed rotated by 180 °, depending on whether the normally closed contact or the normally open contact is to be designed as a cross contact. Alternatively, the riveting can also be done only after the installation of the contact carrier and thereby the desired contact shape can be set on the normally closed side and the working contact side.
Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung ergeben sich auch aus der nachfolgenden Beschreibung eines Ausführungsbeispiels und der Zeichnung. Dabei bilden alle beschriebenen und/oder bildlich dargestellten Merkmale für sich oder in beliebiger Kombination den Gegenstand der vorliegenden Erfindung, auch unabhängig von ihrer Zusammenfassung in den Ansprüchen oder deren Rückbezügen.Further advantages, features and applications of the present invention will become apparent from the following description of an embodiment and the drawing. All described and / or illustrated features alone or in any combination form the subject matter of the present invention, also independent of their summary in the claims or their back references.
Es zeigen:
- Fig. 1
- eine Kontaktanordnung eines Schaltgeräts aus dem Stand der Technik in der Seitenansicht;
- Fig. 2
- eine Aufsicht auf die Kontaktfläche eines Flächenkontaktes,
- Fig. 3
- eine Kontaktanordnung eines erfindungsgemäßen Schaltgeräts in der Seitenansicht und
- Fig. 4
- übereinandergelegt die Kontaktfläche des Ruhekontakts und die Ruhekontaktfläche des Umschaltkontakts in der Anordnung gemäß
Fig. 3 in einer kombinierten Aufsicht- und Schnittdarstellung.
- Fig. 1
- a contact arrangement of a switching device of the prior art in the side view;
- Fig. 2
- a plan view of the contact surface of a surface contact,
- Fig. 3
- a contact arrangement of a switching device according to the invention in side view and
- Fig. 4
- superimposed on the contact surface of the normally closed contact and the normally closed contact surface of the changeover contact in the arrangement according to
Fig. 3 in a combined supervision and sectional view.
In
Durch eine Betätigung des Schaltgeräts wird der Umschaltkontakt 4 in Richtung des Doppelfeiles 7 hin zu dem Arbeitskontakt 3 bewegt, so dass eine dem Arbeitskontakt 3 zugewandte Arbeitskontaktfläche 8 des Umschaltkontakts 4 bei Betätigen des Schaltgeräts an der Kontaktfläche 9 des Arbeitskontakts 3 anliegt.By an actuation of the switching device, the
Der Ruhekontakt 2, der Arbeitskontakt 3 und der Umschaltkontakt 4 sind jeweils auf in dem Schaltgerät befestigten beziehungsweise gelagerten Kontaktträgern 10 durch Vernieten befestigt, indem der Ruhekontakt 2, der Arbeitskontakt 3 und der Umschaltkontakt 4 durch in
Die Bewegung des Umschaltkontaktes 4 gemäß Doppelfeil 7 wird durch ein in
In
Dieser Bereich wird auch Kontaktbereich 11 genannt. Dieser Kontaktbereich 11 entspricht der Form der Kontaktfläche, d.h. es wird hier ein großflächiger Flächenkontakt in Kreisform gebildet, auf dem sich durch mikroskopische Höhenunterschiede viele einzelne durch Punkte angedeutete Kontaktstellen 12 beim Anlagen ausbilden, über die eine elektrische Leitung zwischen Arbeitskontakt 3 und Umschaltkontakt 4 erreicht wird. Bei einer hinreichen großen Last frittet die Spannung durch, so dass der gesamte Kontaktbereich 11 als Kontaktstelle bezeichnet werden kann.This area is also called contact area 11. This contact area 11 corresponds to the shape of the contact area, i. Here, a large-area surface contact is formed in a circular form, on which form many individual points indicated by
Dies gilt zumindest für den Fall, dass die durch das Schaltgerät geschaltete Arbeitslast so groß ist, dass auf den Kontaktflächen 8, 9 beispielsweise durch Oxidation ausgebildete Fremdschichten aufgrund der anliegenden Spannung zerstört werden. Man spricht in diesem Zusammenhang davon, dass die Spannung durch die Fremdschichten durchfrittet, so dass es zu einem Stromfluss in dem gesamten Kontaktbereich 11 kommt.This applies at least in the event that the switched by the switching device workload is so large that destroyed on the contact surfaces 8, 9, for example, formed by oxidation foreign layers due to the applied voltage. In this connection, it is said that the stress is transmitted through the foreign layers, so that a flow of current occurs in the entire contact region 11.
Neben einer Oxidation kann gerade bei dem Arbeitskontakt 3, wenn eine größere Last geschaltet wird, ein sogenannter Kontaktabbrand entstehen, bei dem kleine Partikel auch auf die Kontaktflächen 5, 6 des Umschaltkontakts 4 und des Ruhekontakts 2 gelangen können und diese Kontaktfläche verunreinigen, so dass auch diese Fremdschichten vor einer wirksamen Kontaktierung durchgefrittet werden müssen.In addition to an oxidation can just at the normally
Die bisherige Beschreibung gilt in gleicher Weise für die nachfolgend beschriebene erfindungsgemäße Ausführungsform einer Kontaktanordnung 21. Alle der genannten Merkmale der einzelnen Komponenten der Kontaktanordnung und ihrer Betätigung während des Schaltvorgangs sind gleich und können übertragen werden, so dass diesbezüglich auf eine genauere Beschreibung verzichtet werden kann. Unterschiedlich ist jedoch die Ausbildung der Kontaktflächen zwischen Umschaltkontakt und Ruhekontakt, die im Stand der Technik gemäß
Die Arbeitskontaktseite ist auch bei der erfindungsgemäßen in gleicher Weise ausgebildet. Diese großflächigen Flächenkontakte der Arbeitskontaktfläche und der Kontaktfläche des Arbeitskontaktes sind auf der Ruhekontaktseite jedoch nachteilig, wenn auf dieser Seite lediglich eine Signallast geschaltet werden soll, die wesentlich kleiner ist als die Arbeitslast auf der Arbeitskontaktseite. Der spezifische Flächendruck der Kontaktflächen 5, 6 auf der Ruhekontaktseite der Schaltanordnung 1 gemäß dem Stand der Technik ist so klein, dass dieser oftmals nicht ausreicht, um die Fremdschichten auf der Kontaktoberfläche zu zerstören.The working contact side is also formed in the invention in the same way. However, these large surface contacts of the working contact surface and the contact surface of the normally open contact are disadvantageous on the normally closed contact side, when only a signal load which is substantially smaller than the workload on the normally open side is to be switched on this side. The specific surface pressure of the contact surfaces 5, 6 on the normally closed side of the
Um dieses Problem zu lösen, schlägt die erfindungsgemäße Kontaktanordnung 21 eine andere Ausbildung der Kontaktflächen auf der Ruhekontaktseite vor.In order to solve this problem, the
Dies wird nachfolgend in Bezug auf
Bei einer Betätigung des Schaltgeräts wird der Umschaltkontakt 24 in Richtung des Doppelpfeils 27 hin zu dem Arbeitskontakt 23 bewegt, wodurch sich die Arbeitskontaktfläche 28 des Umschaltkontakts 24 an der Kontaktfläche 29 des Arbeitskontakts 23 anlegt. Diese Kontaktflächen 28, 29 sind entsprechend
Ferner sind der Ruhekontakt 22, der Arbeitskontakt 23 und der Umschaltkontakt 24 in vergleichbarer Weise an Kontaktträgern 30 vernietet. In
Der Vorteil dieser Kreuzkontakt-Anordnung besteht darin, dass aufgrund der punktförmigen Kontaktstelle 32 ein hoher Flächendruck besteht, der auch bei nur geringen Signallasten zu einer sicheren Kontaktierung führt, da die Fremdschichten auch mechanisch aufgebrochen werden.The advantage of this cross-contact arrangement is that due to the point-shaped contact point 32 there is a high surface pressure, which leads to a secure contact even with only small signal loads, since the foreign layers are also broken up mechanically.
Erfindungsgemäß wird durch die vorgeschlagene Kontaktanordnung 21 also ein Schaltgerät mit einer Kontaktanordnung 21 geschaffen, die an der einen Kontaktstelle, insbesondere der Ruhekontaktstelle, schwache Signallasten zuverlässig schalten, und an der anderen Kontaktstelle, vorzugsweise der Arbeitskontaktstelle, große Lasten schalten kann.According to the invention, a switching device with a
Ein besonderer Vorteil ergibt sich hierbei dadurch, dass der Ruhekontakt 22 und der Umschaltkontakt 24 und der Arbeitskontakt 23 auf die Kontaktträger 30 aufgenietet werden. Die den notwendigen Nietdruck auf die Kontaktfläche von Ruhekontakt 22 beziehungsweise Umschaltkontakt 24 aufbringenden Nietformen können einfach durch eine linienförmige grade Vertiefung in den Gesenken individuell realisiert werden, so dass für die erfindungsgemäße Kontaktanordnung für den Ruhekontakt 22, den Arbeitskontakt 23 und den Umschaltkontakt 24 grundsätzlich die gleichen Kontaktgrundformen verwendet werden können, die durch geeignete Gesenke bei dem Nietvorgang entweder als großflächige Flächenkontakte oder als Kreuzkontakte ausgebildet werden, wobei vorzugsweise der Ruhekontakt als Kreuzkontakt und der Arbeitskontakt als großflächiger Flächenkontakt ausgebildet sind. Somit werden keine Sonderkontakte benötigt.A particular advantage in this case results from the fact that the normally closed
- 11
- KontaktanordnungContact configuration
- 22
- RuhekontaktNormally Closed
- 33
- ArbeitskontaktNormally Open
- 44
- Umschaltkontaktchangeover
- 55
- RuhekontaktflächeContact surface
- 66
- Kontaktfläche des RuhekontaktsContact surface of the normally closed contact
- 77
- Doppelpfeil, Bewegung des UmschaltkontaktsDouble arrow, movement of the changeover contact
- 88th
- ArbeitskontaktflächeWorking contact surface
- 99
- Kontaktfläche des ArbeitskontaktsContact surface of the work contact
- 1010
- Kontaktträgercontact support
- 1111
- Kontaktbereichcontact area
- 1212
- Kontaktstellecontact point
- 2121
- KontaktanordnungContact configuration
- 2222
- RuhekontaktNormally Closed
- 2323
- ArbeitskontaktNormally Open
- 2424
- Umschaltkontaktchangeover
- 2525
- RuhekontaktflächeContact surface
- 2626
- Kontaktfläche des RuhekontaktsContact surface of the normally closed contact
- 2727
- Doppelpfeil, Bewegung des UmschaltkontaktsDouble arrow, movement of the changeover contact
- 2828
- ArbeitskontaktflächeWorking contact surface
- 2929
- Kontaktfläche des ArbeitskontaktsContact surface of the work contact
- 3030
- Kontaktträgercontact support
- 3131
- Kontaktbereichcontact area
- 3232
- Kontaktstellecontact point
Claims (5)
- A switchgear with a contact arrangement (21) having a normally closed contact (22), a normally open contact (23) and a switch contact (24) arranged between the normally closed contact (22) and the normally open contact (23), which switch contact bears on the normally closed contact (22) in the inoperative position and on the normally open contact (23) in the working position, wherein the switch contact (24) has a normally closed contact surface (25) for bearing on the contact surface (26) of the normally closed contact (22) and a normally open contact surface (28) for bearing on the contact surface (29) of the normally open contact (23), characterised in that the contact surface (26) of the normally closed contact (22) and the corresponding normally closed contact surface (25) as the counter-contact surface of the switch contact (24) is constructed as a cross-contact, and the contact surface (29) of the normally open contact (23) and the normally open contact surface (28) as the counter-contact surface of the switch contact (24) is constructed as a surface contact (24) with a planar contact point.
- The switchgear according to claim 1, characterised in that the normally closed contact surface (25) and the normally open contact surface (28) are arranged on opposite ends of the switch contact (24).
- The switchgear according to claim 1 or 2, characterised in that the normally closed contact (22), the normally open contact (23) and the switch contact (24) are in the form of stake contacts which are riveted into openings in the contact carrier (30).
- The switchgear according to claim 3, characterised in that the contact surface (26) of the normally closed contact (22) and the corresponding counter-contact surface (25) of the switch contact (24) have been constructed as a cross-contact during the riveting process.
- The switchgear according to claim 3 or 4, characterised in that the contact carriers (30) of the normally open contact (23) and of the normally closed contact (22) are constructed identically.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012110569.3A DE102012110569B4 (en) | 2012-11-05 | 2012-11-05 | Switching device with a contact arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2728597A1 EP2728597A1 (en) | 2014-05-07 |
EP2728597B1 true EP2728597B1 (en) | 2017-08-16 |
Family
ID=49517372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13191389.9A Not-in-force EP2728597B1 (en) | 2012-11-05 | 2013-11-04 | Switchgear with a contact arrangement |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2728597B1 (en) |
DE (1) | DE102012110569B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6609096B2 (en) * | 2014-08-07 | 2019-11-20 | 株式会社デンソー | Electromagnetic switch |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1553062A (en) * | 1967-11-28 | 1969-01-10 | ||
DE2226678A1 (en) * | 1972-05-31 | 1973-12-13 | Siemens Ag | ELECTRICAL SWITCHING CONTACT |
DE8109089U1 (en) * | 1981-03-27 | 1981-07-09 | Siemens AG, 1000 Berlin und 8000 München | Contact device for installation devices with high switching capacity |
DE3128929A1 (en) | 1981-07-22 | 1983-05-11 | H. Kuhnke Gmbh Kg, 2427 Malente | Contact arrangement for switching apparatuses |
DE3627459A1 (en) * | 1986-06-30 | 1988-01-14 | Schunk Metall & Kunststoff | SWITCHING ELEMENT FOR COMMAND DEVICES FOR FRONT PANEL INSTALLATION |
JP2528083Y2 (en) * | 1989-03-31 | 1997-03-05 | 株式会社東海理化電機製作所 | Switch device |
PL1722382T3 (en) * | 2005-05-10 | 2015-12-31 | Elesta Relays Gmbh | Contact arrangement for a relay |
EP2111627A4 (en) * | 2007-01-10 | 2013-08-21 | Craig R Wildman | Pressure differential switch |
DE102007017366B3 (en) * | 2007-04-12 | 2008-09-18 | Cherry Gmbh | Electric switch |
-
2012
- 2012-11-05 DE DE102012110569.3A patent/DE102012110569B4/en not_active Expired - Fee Related
-
2013
- 2013-11-04 EP EP13191389.9A patent/EP2728597B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
DE102012110569B4 (en) | 2014-09-18 |
DE102012110569A1 (en) | 2014-05-08 |
EP2728597A1 (en) | 2014-05-07 |
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