EP2728597B1 - Appareil de commutation comprenant un agencement de contact - Google Patents

Appareil de commutation comprenant un agencement de contact Download PDF

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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
Application number
EP13191389.9A
Other languages
German (de)
English (en)
Other versions
EP2728597A1 (fr
Inventor
Wilhelm Doster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CR Consulting & Marketing GmbH
Original Assignee
CR Consulting & Marketing GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CR Consulting & Marketing GmbH filed Critical CR Consulting & Marketing GmbH
Publication of EP2728597A1 publication Critical patent/EP2728597A1/fr
Application granted granted Critical
Publication of EP2728597B1 publication Critical patent/EP2728597B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • 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
    • 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.

Landscapes

  • Push-Button Switches (AREA)
  • Manufacture Of Switches (AREA)

Claims (5)

  1. Appareil de commutation avec un dispositif à contacts (21), lequel présente un contact de repos (22), un contact de travail (23) et un contact de commutation (24) disposé entre le contact de repos (22) et le contact de travail (23), lequel repose contre le contact de repos (22) dans la position de repos et contre le contact de travail (23) dans la position de travail, dans lequel le contact de commutation (24) présente une surface de contact de repos (25) pour reposer contre la surface de contact (26) du contact de repos (22) et une surface de contact de travail (28) pour reposer contre la surface de contact (29) du contact de travail (23), caractérisé en ce que la surface de contact (26) du contact de repos (22) et la surface de contact de repos (25) correspondante, en tant que surface de contact opposée du contact de commutation (24), sont réalisées en tant que contact croisé et en ce que la surface de contact (29) du contact de travail (23) et la surface de contact de travail (28), en tant que surface de contact opposée du contact de commutation (24), sont réalisées en tant que contact de surface avec un point de contact réalisé de manière plate.
  2. Appareil de commutation selon la revendication 1, caractérisé en ce que la surface de contact de repos (25) et la surface de contact de travail (28) sont disposées à des extrémités opposées du contact de commutation (24).
  3. Appareil de commutation selon la revendication 1 ou 2, caractérisé en ce que le contact de repos (22), le contact de travail (23) et le contact de commutation (24) sont réalisés en tant que contacts de rivetage, lesquels sont rivetés dans des ouvertures d'un support de contact (30).
  4. Appareil de commutation selon la revendication 3, caractérisé en ce que la surface de contact (26) du contact de repos (22) et la surface de contact opposée correspondante (25) du contact de commutation (24) ont été réalisées en tant que contact croisé pendant le rivetage.
  5. Appareil de commutation selon l'une des revendications 3 ou 4, caractérisé en ce que les supports de contact (30) du contact de travail (23) et du contact de repos (22) sont configurés de façon identique.
EP13191389.9A 2012-11-05 2013-11-04 Appareil de commutation comprenant un agencement de contact Not-in-force EP2728597B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012110569.3A DE102012110569B4 (de) 2012-11-05 2012-11-05 Schaltgerät mit einer Kontaktanordnung

Publications (2)

Publication Number Publication Date
EP2728597A1 EP2728597A1 (fr) 2014-05-07
EP2728597B1 true EP2728597B1 (fr) 2017-08-16

Family

ID=49517372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13191389.9A Not-in-force EP2728597B1 (fr) 2012-11-05 2013-11-04 Appareil de commutation comprenant un agencement de contact

Country Status (2)

Country Link
EP (1) EP2728597B1 (fr)
DE (1) DE102012110569B4 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6609096B2 (ja) * 2014-08-07 2019-11-20 株式会社デンソー 電磁スイッチ

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1553062A (fr) * 1967-11-28 1969-01-10
DE2226678A1 (de) * 1972-05-31 1973-12-13 Siemens Ag Elektrischer schaltkontakt
DE8109089U1 (de) * 1981-03-27 1981-07-09 Siemens AG, 1000 Berlin und 8000 München Kontaktvorrichtung für Installationsgeräte hoher Schaltleistung
DE3128929A1 (de) 1981-07-22 1983-05-11 H. Kuhnke Gmbh Kg, 2427 Malente Kontaktanordnung fuer schaltgeraete
DE3627459A1 (de) * 1986-06-30 1988-01-14 Schunk Metall & Kunststoff Schaltelement fuer befehlsgeraete fuer den frontplatteneinbau
JP2528083Y2 (ja) * 1989-03-31 1997-03-05 株式会社東海理化電機製作所 スイッチ装置
EP1722382B1 (fr) * 2005-05-10 2015-08-19 ELESTA relays GmbH Disposition de contacts pour un relais
EP2111627A4 (fr) * 2007-01-10 2013-08-21 Craig R Wildman Interrupteur a pression differentielle
DE102007017366B3 (de) * 2007-04-12 2008-09-18 Cherry Gmbh Elektrischer Schalter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102012110569B4 (de) 2014-09-18
DE102012110569A1 (de) 2014-05-08
EP2728597A1 (fr) 2014-05-07

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