EP3602590A1 - Elektromechanisches schaltgerät mit schaltkontakten - Google Patents
Elektromechanisches schaltgerät mit schaltkontaktenInfo
- Publication number
- EP3602590A1 EP3602590A1 EP18716503.0A EP18716503A EP3602590A1 EP 3602590 A1 EP3602590 A1 EP 3602590A1 EP 18716503 A EP18716503 A EP 18716503A EP 3602590 A1 EP3602590 A1 EP 3602590A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- contact
- switching contact
- closed
- electromechanical
- 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.)
- Pending
Links
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
- H01H1/02—Contacts characterised by the material thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/64—Protective enclosures, baffle plates, or screens for contacts
- H01H1/66—Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2201/00—Contacts
- H01H2201/022—Material
- H01H2201/024—Material precious
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2201/00—Contacts
- H01H2201/022—Material
- H01H2201/026—Material non precious
Definitions
- the present invention relates to an electromechanical switching device with
- Switching contacts for closing an electrical circuit in particular a relay with relay contacts.
- Electromechanical switching devices in particular relays, are used in different types in different applications. Typical applications in the
- the switching arc can be a
- Switching arc has a sufficiently high temperature, it may cause a chemical reaction of the ambient air, which may produce nitric acid.
- the resulting nitric acid can accumulate on the switch contacts and, if necessary, react chemically with the metallic switch contacts.
- the invention is based on the recognition that for reducing an accumulation of liquid between the first switching contact and the second switching contact of an electromechanical switching device, at least one of the switching contacts has cavities in which liquid can be accommodated. By a capillary effect occurring, the liquid advantageously penetrates into the cavities. The cavities within the at least one switch contact make this a sufficient
- CONFIRMATION COPY large volume for the liquid, so that the amount of liquid remaining between the first switching contact and the second switching contact can be significantly reduced.
- the invention relates to an electromechanical switching device with switching contacts for closing an electrical circuit, in particular a relay with relay contacts, wherein the switching contacts have a first switching contact and a second switching contact, wherein the first switching contact and the second
- Switching contact can be brought into contact to close the electrical circuit, wherein at least one of the switching contacts of a plurality of to each other
- closed bodies are arranged cavities for receiving liquid.
- At least one of the switching contacts are formed from a plurality of mutually arranged closed bodies.
- the closed bodies can be different geometric
- Switching contact a layer structure. As a result, a stable electrically conductive structure of the first and / or second switching contact is ensured.
- cavities within the closed bodies arranged one behind the other are hollow spaces
- the cavities serve to receive liquid, whereby the amount of liquid which accumulates between the first switching contact and the second switching contact, can be reduced.
- the arranged closed body that between the first
- the first switching contact has a first switching contact surface and the second switching contact has a second switching contact surface
- the first Switch contact surface and the second switch contact surface are brought into contact to close the electrical circuit, and wherein the first switch contact surface and / or the second switch contact surface at least one rounded surface, at least one edge, at least one tip and / or at least one edge with at least one tip exhibit.
- Switching contact surface reduces the total area of the contact region between the first switching contact and the second switching contact, as a result of which particularly low adhesive forces occur between the switching contacts.
- the closed bodies are formed as pyramids, tetrahedrons, teardrop-shaped bodies, spheroids, macaroon-shaped bodies and / or spherical bodies, in particular spherical bodies.
- the closed bodies are in particular designed as spherical bodies, since in this case a large total volume of the cavities can be provided within the at least one switching contact.
- the closed bodies have body contact surfaces, wherein inside the first switching contact and / or the second switching contact, the body contact surfaces of the closed bodies arranged in contact are in contact to limit the voids between the closed bodies arranged one another.
- the closed bodies form a dense packing of closed bodies, with the body contact surfaces of the closed bodies in contact with the corresponding body contact surfaces of the adjacent closed bodies.
- the body contact surfaces of the closed bodies arranged in the interior of the first and / or second switching contact effectively limit the cavities.
- the cavities between the closed bodies are formed as capillary gaps, wherein the capillary gaps are adapted to retain liquid in the capillary gaps by a capillary effect.
- the capillary effect is determined by the surface tension of the liquid and by the
- the at least one switching contact is designed as a pyramid, which has a pyramid tip for closing the electrical
- the pyramid is formed of a plurality of layers of adjacent closed bodies, wherein the pyramid is formed in particular as a tetrahedron, a square pyramid, a five-sided pyramid or a six-sided pyramid.
- a pyramid ensures effective stacking of the closed bodies in the switch contact, with the pyramid tip providing a reduced switch contact area for closing the electrical circuit.
- the at least one switching contact is formed as a cone, which has a cone tip for closing the electrical circuit, wherein the cone is formed of a plurality of layers of closed bodies arranged one another, or wherein the at least one switching contact is formed as a cone, which a cone cover surface for closing the electrical circuit, wherein the cone is formed of a plurality of layers of closed bodies arranged one another.
- a cone, or cone ensures an effective layer arrangement of the closed body in the at least one switching contact, wherein the cone tip, or Cone top surface, a reduced switching contact surface for closing the electrical circuit provides.
- the at least one switching contact is designed as a double cone, which has a first cone with a first cone tip for closing the electrical circuit and a second cone with a second cone tip for closing the electrical circuit.
- each switching contact is formed of a plurality of closed bodies arranged one against the other, and cavities for receiving liquid are arranged between the closed bodies.
- both the first switching contact and the second switching contact are formed of arranged closed bodies, a large number of cavities for receiving liquid in both the first switching contact and in the second switching contact is provided.
- a single one of the switching contacts is formed of a plurality of mutually arranged closed bodies, wherein between the closed bodies cavities for receiving liquid are arranged, wherein the other of the switching contacts is formed as a solid switching contact, which no cavities for receiving Has liquid, wherein the massive
- Switching contact is designed in particular as a switching contact plate or as a Heidelberg.barren.
- Switching contacts is designed as a solid switching contact without cavities.
- One of the two switching contacts of closed bodies with cavities is sufficient to effectively receive the liquid.
- the solid switching contact has a first contact thickness, and the switching contact formed from a plurality of closed bodies arranged on a second contact thickness, wherein the second Köntakt thickness is greater than the first Köntaktdicke, and wherein the second contact thickness in particular more than twice as large as the first contact thickness.
- the second contact thickness of the switching contact with cavities is greater than the first contact thickness of the solid switching contact without cavities, the volume of the switching contact with cavities is significantly greater than if both switching contacts would have the same contact thickness.
- the first contact thickness is reduced by the same distance by which the second contact thickness is increased, so that a constant total thickness of the first switching contact and of the second
- the closed bodies are formed as closed bodies made of metal or as closed bodies with a metal coating, wherein the metal is in particular selected from the group consisting of copper, silver, gold or mixtures thereof.
- the first switching contact and / or the second switching contact have a gold coating.
- the electro-mechanical switching device on a housing which encloses the first and second switching contact and airtight, in particular hermetically seals against an outer region of the housing, wherein the
- Housing has a housing interior, which in particular with a protective gas is filled, wherein the protective gas is selected in particular from the group comprising nitrogen, sulfur hexafluoride, noble gas or mixtures thereof.
- the filled with inert gas and hermetically sealed to an outside housing reduces the amount of chemical substances formed when a switching arc occurs and thus reduces the amount of switching contacts
- the at least one switching contact in each case has a carrier plate on which the plurality of closed bodies arranged on one another is formed.
- the support plate By the support plate, the arrangement of the closed body in the at least one switching contact is stabilized.
- the carrier plate is deformable to bring the first switching contact and the second switching contact into contact.
- Fig. 2 designed as pyramids switching contacts of an electromechanical switching device according to a first embodiment
- Fig. 1 shows a fluid accumulation of switching contacts of an electromechanical switching device.
- the electromechanical switching device 100 with switching contacts 101 for closing an electrical circuit is in particular as a relay with
- This switching arc has a temperature of between 5000 Kelvin and 15000 Kelvin depending on the disconnected load, on the geometric properties of the switching contacts 101 and the material properties of the switching contacts 101, and the opening speed of the switching contacts 101. Due to this high temperature, there is a chemical reaction of the components of the internal air of the electromechanical
- Switching device 100 in the switching arc oxygen and nitrogen react to nitrogen oxides.
- the nitrogen oxides in turn react with water or water vapor, to nitrous acid and nitric acid.
- the resulting gaseous nitric acid condenses on the metallic switch contacts 101 and reacts with the metallic switch contacts 101 with the formation of metal nitrates.
- Switching contacts 101 used copper the nitric acid reacts with the copper to form copper nitrate and water and at the switch contacts 101 forms a colored layer.
- the nitric acid reacts with the silver to form silver nitrate and water.
- Switch contacts 101 used in gold there is no reaction of nitric acid and gold due to the noble properties of gold, so that the nitric acid precipitates as a liquid precipitate on the switching contacts 101 and on the
- Switching contacts 101 Here, the upper switching contact 101 shown in FIG. 1 in sectional view as a cuboid contact bar with a rectangular
- Cross section formed and the lower switching contact 101 is formed as a round contact bar with a circular cross-section.
- FIG. 2 shows a pyramid-shaped switching contacts of an electromechanical switching device according to a first embodiment in a sectional view.
- the switching contacts 101 include a first switching contact 101-1 with a first switching contact surface 105-1 and a second switching contact 101-2 with a second switching contact surface 105-2.
- the first switching contact surface 105-1 and the second switching contact surface 105-2 are brought into contact with each other by a movement of the first and second switching contacts 101-1, 101-2 facing each other to close an electric circuit.
- a contact gap 107 is formed between the first switching contact surface 105-1 and the second switching contact surface 105-2.
- Both the first switching contact 101-1 and the second switching contact 101-2 are formed from a plurality of adjacent closed bodies 109, wherein between the closed bodies 109 cavities 13 for receiving liquid 03 are formed.
- first switching contact 101-1 or only the second switching contact 101-2 can be formed from a plurality of adjacent closed bodies 109 and the other of the two switching contacts 101-1, 101-2 can be used as a solid switching contact without cavities 13 be formed to receive liquid 103.
- the first and second switching contact 101-1, 101-2 is formed as shown in FIG. 2 each as a pyramid with Pyramidenspitze.
- the first and second switching contact 101-1, 101-2 is formed from a plurality of layers of adjacent closed bodies 109, in particular spherical bodies, wherein the spherical bodies are formed in particular from copper, silver, gold or mixtures thereof, and / or the spherical bodies are coated with copper, silver, gold or mixtures thereof.
- Each of the spherical bodies has a plurality of body contact surfaces 11, wherein the body contact surfaces 11 1 in the interior of the first and second switching contact 101-1, 101-2 are in contact with the body contact surfaces 11 of the adjacent closed bodies 109 and thus between the closed body Bodies 109 cavities 113 for receiving fluid 103 limit.
- the cavities 113 are in this case formed as capillary gaps in which the liquid 103 present in the electromechanical switching device 100, such as, for example, Nitric acid or nitrous acid, collects and is absorbed in the cavities 113 by a capillary effect. This prevents the liquid 103 from collecting between the first switching contact surface 105-1 and the second switching contact surface 105-2.
- the total area of the contacting first switching contact surface 105-1 and the second switching contact surface 105-2 is small due to the rounded surfaces compared to two contacting plates. Consequently, the resulting adhesive forces between the contacting first switching contact surface 105-1 and the second switching contact surface 105-2 are also substantially smaller than in the case of conventional contacts having comparatively large radii of the switching contact surfaces 105-1, 105-2.
- the capillary effect in the cavities 113 is additionally reinforced, so that a viscous liquid 103, such as nitric acid, is also received in the cavities 113 and not the switching contact surfaces 105-1, 105-5. 2 glued.
- a viscous liquid 103 such as nitric acid
- the accumulation of liquid 103, eg, nitric acid or nitrous acid, between the closed first and second switch contact surfaces 105-1, 105-2 can be reduced become.
- the shape of the first and second switching contact surfaces 105-1, 105-2 may be selected so that a very small remaining adhesive force between the first and second switching contact surfaces 105-1, 105-2 occurs.
- FIGS. 3A, B, C, D show switching contacts according to further embodiments.
- the switching contacts 101 shown in FIGS. 3A, B, C, D each show a first switching contact 101-1, wherein the closed bodies 109 in FIGS. 3A, 3C and 3D are formed as spherical bodies 109, wherein the closed bodies 109 are formed in FIG. 3B as macaroon-shaped body 109, and wherein each body 109 has a plurality of body contact surfaces 11 1, wherein the body contact surfaces 1 11 each with adjacent bodies 109 in contact.
- FIG. 3A shows a first switching contact 101-1, which can be brought into contact with a second switching contact 101-2, not shown in FIG. 3A, in order to close the electrical circuit.
- the first switching contact 101-1 is formed from layers 115 of closed bodies 109, in particular spherical bodies 109, arranged next to one another.
- the first switching contact 101-1 is designed as a pyramid, in particular a rectangular pyramid, with an upper edge as the first switching contact surface 105-1.
- FIG. 3B shows a first switching contact 101-1, which can be brought into contact with a second switching contact 101-2, not shown in FIG. 3B, in order to close the electrical circuit.
- the first switching contact 101-1 is formed from layers 115 of closed bodies 109, in particular macaroon-shaped bodies 109, arranged next to one another.
- the first switching contact 101-1 is designed as a pyramid, in particular a rectangular pyramid, with an upper edge as the first switching contact surface 105-1.
- FIG. 3C shows a first switching contact 101-1, which can be brought into contact with a second switching contact 101-2, not shown in FIG Close circuit.
- the first switching contact 101-1 is formed from layers 115 of closed bodies 109, in particular spherical bodies 109, arranged next to one another.
- the first switching contact 101-1 is designed as a double pyramid, which has a first pyramid, in particular a square pyramid, with a first pyramid tip and a second pyramid, in particular a square pyramid, with a second pyramid tip, the first and second pyramid tips the first switching contact surface 105 -1 form.
- FIG. 3D shows a first switching contact 101-1, which can be brought into contact with a second switching contact 101-2, not shown in FIG. 3D, in order to close the electrical circuit.
- the first switching contact 101-1 is formed from layers 115 of closed bodies 109, in particular spherical bodies 109, arranged next to one another.
- the first switching contact 101-1 is designed as a double cone, which has a first cone with a first cone tip and a second cone with a second cone tip, wherein the first and second cone tips form the first switching contact surface 105-1.
Landscapes
- Contacts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017106237.8A DE102017106237B3 (de) | 2017-03-23 | 2017-03-23 | Elektromechanisches Schaltgerät mit Schaltkontakten |
PCT/EP2018/000106 WO2018171938A1 (de) | 2017-03-23 | 2018-03-22 | Elektromechanisches schaltgerät mit schaltkontakten |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3602590A1 true EP3602590A1 (de) | 2020-02-05 |
Family
ID=61913110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18716503.0A Pending EP3602590A1 (de) | 2017-03-23 | 2018-03-22 | Elektromechanisches schaltgerät mit schaltkontakten |
Country Status (6)
Country | Link |
---|---|
US (1) | US11201018B2 (de) |
EP (1) | EP3602590A1 (de) |
JP (1) | JP7176679B2 (de) |
CN (1) | CN110546728B (de) |
DE (1) | DE102017106237B3 (de) |
WO (1) | WO2018171938A1 (de) |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3671314A (en) * | 1970-01-29 | 1972-06-20 | Echlin Mfg Corp The | Tungsten electrical switching contacts |
US4399339A (en) | 1981-03-02 | 1983-08-16 | Cherry Electrical Products Corporation | Electrical contact |
AU3073797A (en) * | 1996-05-17 | 1997-12-05 | Formfactor, Inc. | Wafer-level burn-in and test |
TW341747B (en) * | 1996-05-17 | 1998-10-01 | Formfactor Inc | Techniques of fabricating interconnection elements and tip structures for same using sacrificial substrates |
US5967303A (en) * | 1998-10-30 | 1999-10-19 | Leviton Manufacturing Co., Inc. | Switch activating mechanism |
DE10116894A1 (de) * | 2001-04-04 | 2002-10-17 | Moeller Gmbh | Strombegrenzende Kontaktanordnung |
FR2828890B1 (fr) * | 2001-08-24 | 2004-02-13 | Itt Mfg Enterprises Inc | Dispositif de depot en continu par electrodeposition et composants electriques ou electroniques fabriques en bande comportant une couche de placage par electrodeposition |
DE10261303B3 (de) | 2002-12-27 | 2004-06-24 | Wieland-Werke Ag | Verbundmaterial zur Herstellung elektrischer Kontakte und Verfahren zu dessen Herstellung |
DE102005049235B4 (de) * | 2004-10-20 | 2009-07-09 | Panasonic Corp., Kadoma | Schalter und Verfahren zum Herstellen desselben |
US7321281B2 (en) * | 2005-05-17 | 2008-01-22 | Gigavac Llc | Hermetically sealed relay having low permeability plastic housing |
US7843289B1 (en) * | 2005-08-19 | 2010-11-30 | Scientific Components Corporation | High reliability microwave mechanical switch |
JP2007179999A (ja) * | 2005-09-26 | 2007-07-12 | D D K Ltd | 電気接点及びその電気接点の製造方法 |
US7528337B2 (en) * | 2007-05-15 | 2009-05-05 | Panasonic Corporation | Pressure sensitive conductive sheet and panel switch using same |
CN101359555A (zh) * | 2008-09-28 | 2009-02-04 | 韩玉杰 | 真空开关触头 |
JP2016012505A (ja) * | 2014-06-30 | 2016-01-21 | 富士電機機器制御株式会社 | 接点機構及びこれを使用した電磁接触器 |
DE102014225810B4 (de) * | 2014-12-15 | 2023-03-16 | Siemens Aktiengesellschaft | Kontakteinheit für eine elektromechanische Schalteinrichtung sowie eine solche Schalteinrichtung |
-
2017
- 2017-03-23 DE DE102017106237.8A patent/DE102017106237B3/de active Active
-
2018
- 2018-03-22 EP EP18716503.0A patent/EP3602590A1/de active Pending
- 2018-03-22 JP JP2019547474A patent/JP7176679B2/ja active Active
- 2018-03-22 WO PCT/EP2018/000106 patent/WO2018171938A1/de unknown
- 2018-03-22 CN CN201880019354.7A patent/CN110546728B/zh active Active
- 2018-03-22 US US16/496,629 patent/US11201018B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN110546728B (zh) | 2022-05-10 |
JP2020511738A (ja) | 2020-04-16 |
WO2018171938A1 (de) | 2018-09-27 |
US20200381187A1 (en) | 2020-12-03 |
DE102017106237B3 (de) | 2018-06-21 |
CN110546728A (zh) | 2019-12-06 |
US11201018B2 (en) | 2021-12-14 |
JP7176679B2 (ja) | 2022-11-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH616269A5 (de) | ||
EP1455375A1 (de) | Schmelzsicherungsbauelement mit einer temporär quasi-hermetischen Abdichtung des Innenraums | |
DE2843577A1 (de) | Selbstentlueftende batterie | |
DE19538767A1 (de) | Schalter mit flexibler Leiterfolie als ortsfester Kontakt und Verbindung zu Anschlußkontakten | |
DE2350271C3 (de) | ||
WO2021239460A1 (de) | Schaltvorrichtung | |
DE2350271B2 (de) | Elektrischer kondensator mit einer auf ueberdruck ansprechenden abschaltvorrichtung | |
DE102017106237B3 (de) | Elektromechanisches Schaltgerät mit Schaltkontakten | |
DE102007044348A1 (de) | Anordnung zur gasdichten Durchführung mindestens eines elektrischen Leiters | |
DE1924701A1 (de) | Thermisch ansprechender Schnappschalter | |
DE102006043795B3 (de) | Elektrischer Mikroschalter | |
DE2022178A1 (de) | Kontaktanordnung mit Schaltbruecke | |
DE69934559T2 (de) | Einbau des Einschaltwiderstandes für Hochspannungsanlage | |
DE2036850C3 (de) | Magnetisch betätigbarer Schaltkontakt | |
WO2019219750A1 (de) | Kontaktsystem für einen laststufenschalter | |
DE102012204371A1 (de) | Kontaktanordnung und elektrisches Schaltgerät | |
DE19830878A1 (de) | Elektrisches Bauteil | |
DE102020111765B4 (de) | Elektrische Sicherungsvorrichtung, Verfahren zur Herstellung einer Sicherungsvorrichtung und ein Verfahren zum Betrieb einer elektrischen Sicherungsvorrichtung | |
DE1439132C3 (de) | Halbleiterbauelement | |
DE10048880C2 (de) | Mikroschalter und Verfahren zu dessen Herstellung | |
WO2020025374A1 (de) | Elektrisches bauelement für die oberflächenmontage bzw. elektronische baugruppe mit überwachungsstruktur | |
DE19959450B4 (de) | Elektrische Steckverbindung, welche sich während der Montage der isoliergasbefüllten Schaltanlagenkomponenten selbsttätig mit Isoliergas befüllt | |
DE2532295A1 (de) | Drucksicherung | |
DD247107A1 (de) | Druckgasisolierung fuer metallgekapselte hochspannungsgeraete | |
DE1615940B2 (de) | Elektrischer schalter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190830 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HOFFMANN, RALF Inventor name: GUNDLACH, THOMAS |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20211202 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230512 |