DE759440C - Method to prevent the formation of peaks and craters through fine migration at contacts - Google Patents
Method to prevent the formation of peaks and craters through fine migration at contactsInfo
- Publication number
- DE759440C DE759440C DES134598D DES0134598D DE759440C DE 759440 C DE759440 C DE 759440C DE S134598 D DES134598 D DE S134598D DE S0134598 D DES0134598 D DE S0134598D DE 759440 C DE759440 C DE 759440C
- Authority
- DE
- Germany
- Prior art keywords
- contacts
- formation
- peaks
- prevent
- craters
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
Landscapes
- Manufacture Of Switches (AREA)
Description
Bei der Betätigung von Kontakten ist' es bekannt, daß durch die sogenannte Feinwanderung (s. »Wissenschaftliche Veröffent- - Mohuttgen aus den Siemens-Werken«, Bd. 14, 1935, Heft i, S...30) Spitzen und Krater entstehen können, ohne daß- deshalb, wie bei der Grobwanderung, Lichtbogen oder Glimmentladungen entstehen. Diese Verformungen der Kontakte haben bei Relais- und sonstigenWhen actuating contacts, it is known that by the so-called fine migration (see "Scientific publications - Mohuttgen from the Siemens works", Vol. 14, 1935, issue i, p ... 30) peaks and craters arise can, without that, as with coarse migration, arcs or glow discharges develop. These deformations of the contacts have with relay and other
to Steuerkontakten eine ungenaue Kontaktgabe zur Folge. Sie führen zu Kurzschlüssen, so daß die Kontakte geringe Lebensdauer haben und laufende Wartung benötigen.to control contacts result in inaccurate contact. They lead to short circuits, like that that the contacts have a short service life and require ongoing maintenance.
Gemäß der Erfindung werden diese durch die Feinwanderung entstehenden Verformungen dadurch verhindert, daß der wandernde Stoff durch eine zusätzliche Kraft aus dem Gebiet der jeweils kontaktgebenden Stelle entfernt wird. Die zusätzliche Kraft brauchtAccording to the invention, these deformations caused by the fine migration are eliminated this prevents the migrating material from being exerted by an additional force Area of the respective contacting point is removed. That takes extra strength
ao dabei nicht mit Rücksicht auf irgendwelche Funken- oder Lichtbogenbildung· bemessen zu werden, die ja, wie oben erwähnt, bei der Feinwanderung überhaupt nicht auftreten.ao not dimensioned with regard to the formation of sparks or arcing which, as mentioned above, do not occur at all during the fine hike.
In der Figur ist ein Ausführungsbeispiel der Erfindung für ein Relais dargestellt.In the figure, an embodiment of the invention for a relay is shown.
Auf einer Achse 1 ist eine Platte 2 befestigt, die einen Elektromagneten 3 trägt. Der Anker des Magneten ist um eine Achse 4 schwenkbar, die senkrecht zur Achse 1 verläuft. Der Anker 5 betätigt gegen die Wirkung der Feder 6 den Kontakt 7 gegen, 8. Durch eine Stellschraube 9 ist der Kontaktspalt einstellbar. Die Zuleitung zu den Kontaktgliedern und zur Magnetspule erfolgt durch Schleifringe 10. Es sei nun angenommen, daß durch den Kontakt 7, 8 ein Gleichstrom verhältnismäßig hoher Leistung oft, z. B. zu Regelzwecken, ein- und ausgeschaltet werden soll. Die Materialwanderung zwischen den Kontaktgliedern wird dabei durch die Wirkung der beim Umlauf der Achse 1 auftretenden Zentrifugalkraft unwirksam gemacht, indem die wandernden Teilchen aus dem Kontaktspalt in Richtung auf das Gehäuse π weggeschleudert werden. Die Teilchen brauchen nicht vollständig aus. dem Kontaktspalt entfernt zu werden. Es genügt, sie von der augenblicklich kontaktgebenden Stelle an andere Stellen der Kontaktoberfläche zu bewegen. Eine Krater- und Spitzenbildung kann so vermieden werden.A plate 2, which carries an electromagnet 3, is fastened on an axle 1. The armature of the magnet can be pivoted about an axis 4 which is perpendicular to axis 1. The armature 5 actuates the contact 7 against the action of the spring 6, 8. The contact gap can be adjusted by means of an adjusting screw 9. The lead to the contact members and to the magnet coil is carried out by slip rings 10. It is now assumed that that through the contact 7, 8 a direct current of relatively high power often, z. B. for control purposes, should be switched on and off. The migration of material between the contact members are thereby caused by the effect of the rotation of the axis 1 Centrifugal force made ineffective by moving the migrating particles out of the contact gap towards the housing π be thrown away. The particles do not need completely. to the Contact gap to be removed. Suffice it to do with the instantly contacting them Place to move to other places on the contact surface. A crater and peak formation can thus be avoided.
Aus der Literatur sind zwar Anordnungen bekannt, bei denen Kontakte ähnlich angeordnet sind wie bei dem obenerwähnten Ausführungsbeispiel. Jedoch erwähnt keine der Literaturstellen eine solche Bemessung der zusätzlichen Kraft, daß auch die bei Feinwanderung entstehenden Teilchen entfernt werden.Arrangements are known from the literature in which contacts are arranged similarly are as in the above-mentioned embodiment. However, none of that mentions References such a dimensioning of the additional force that also with fine migration resulting particles are removed.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES134598D DE759440C (en) | 1938-11-12 | 1938-11-13 | Method to prevent the formation of peaks and craters through fine migration at contacts |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2272315X | 1938-11-12 | ||
DES134598D DE759440C (en) | 1938-11-12 | 1938-11-13 | Method to prevent the formation of peaks and craters through fine migration at contacts |
Publications (1)
Publication Number | Publication Date |
---|---|
DE759440C true DE759440C (en) | 1953-02-16 |
Family
ID=25999055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES134598D Expired DE759440C (en) | 1938-11-12 | 1938-11-13 | Method to prevent the formation of peaks and craters through fine migration at contacts |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE759440C (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE45430C (en) * | Dr. ST. DOUBRAVA in Brünn, Neugasse 95 | Transformer for electrical currents | ||
CH102403A (en) * | 1922-10-13 | 1923-12-01 | Oerlikon Maschf | Electrical contact for DC circuit breaker. |
GB440505A (en) * | 1933-08-26 | 1936-01-01 | British Thomson Houston Co Ltd | Improvements in and relating to electric rectifiers or inverters |
-
1938
- 1938-11-13 DE DES134598D patent/DE759440C/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE45430C (en) * | Dr. ST. DOUBRAVA in Brünn, Neugasse 95 | Transformer for electrical currents | ||
CH102403A (en) * | 1922-10-13 | 1923-12-01 | Oerlikon Maschf | Electrical contact for DC circuit breaker. |
GB440505A (en) * | 1933-08-26 | 1936-01-01 | British Thomson Houston Co Ltd | Improvements in and relating to electric rectifiers or inverters |
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