DE890992C - Electromagnet - Google Patents
ElectromagnetInfo
- Publication number
- DE890992C DE890992C DES4634D DES0004634D DE890992C DE 890992 C DE890992 C DE 890992C DE S4634 D DES4634 D DE S4634D DE S0004634 D DES0004634 D DE S0004634D DE 890992 C DE890992 C DE 890992C
- Authority
- DE
- Germany
- Prior art keywords
- parts
- magnetic
- electromagnet
- armature
- electromagnet according
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
- H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F29/146—Constructional details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/01—Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field
Description
Es sind bereits Auslöser für Schalter und ähnliche Verwendungszwecke angegeben worden, bei denen ein Magnetkörper mit einem Halteanker versehen ist, wobei der Anker etwa parallel zu einem Luftspalt liegt, über den sich ein Teil des Magnetflusses schließen kann. Derartige Magnete haben insbesondere den Vorteil, daß die auf den Anker ausgeübte Haltekraft schon bei sehr geringem Ankerweg erheblich abnimmt, so daß auch bei kurzzeitigen Flußschwankungen sicher eine Auslösung erfolgt, ohne daß .die Gefahr besteht,- daß der Anker wieder zurückgezogen würde.They are already triggers for switches and similar uses have been specified in which a magnetic body is provided with a retaining anchor, wherein the anchor lies approximately parallel to an air gap over which a part of the Magnetic flux can close. Such magnets have the particular advantage that the holding force exerted on the armature is considerable even with a very small armature travel decreases, so that even with short-term fluctuations in the flow, a trip is guaranteed, without the risk of the anchor being withdrawn again.
Derartige Auslösemagnete haben eine eigenartige Charakteristik der Zugkraft in Abhängigkeit vom Strom zur Folge, die es schwierig macht, bei einem einmal festgelegten Magnetsystem den Grenzwert des Erregerstromes, bei dessen Unterschreitung der Anker abfällt, auf verschiedene Werte einzustellen. Insbesondere ist die sonst bei Auslösern übliche Stromeinstellung durch Verstellung der Vorspannung einer auf den Anker einwirkenden Zugfeder hierfür wenig geeignet. Nach der .Erfindung kann für derartige Auslöser eine besonders einfache Einstellunge der Stromwerte dadurch erfolgen, daß der magnetische Leitwert .des Streupfades (parallel zum Anker) verändert wird. Dies kann beispielsweise .durch Verschieben eines Teiles des Eisenkörpers des Magneten erfolgen. Besondere Vorteile bietet eine derartige Steuerung bei Auslösern, bei .denen .der Haltefluß durch Änderung der Sättigung in Teilen des magnetischen Kraftweges von dem Halteanker abgedrängt wird.Such release magnets have a peculiar characteristic of Pulling force depending on the current, which makes it difficult for one Once the magnet system has been determined, the limit value of the excitation current is exceeded when it is undershot the anchor drops to adjust to different values. In particular, it is otherwise The usual current setting for releases by adjusting the preload on the tension spring acting on the armature is not very suitable for this. According to the invention a particularly simple setting of the current values as a result for such triggers take place that the magnetic conductance .of the scattering path (parallel to the armature) changes will. This can be done, for example, by moving part of the iron body of the magnet. Such a control offers particular advantages for triggers, with .those .the holding flux by changing the saturation in parts of the magnetic Force path is displaced from the retaining anchor.
Ein Ausführungsbeispiel der Erfindung ist in den Fig. a und 2 dargestellt. Mit i ist der Eisenkörper des Magnetkreises bezeichnet, dessen beide Schenkel 2 durch Ausnehmungen in je ein Schenkelpaar unterteilt sind, wobei die Wicklung des Auslösers 5 durch die Ausnehmungen 3 hindurchgefädelt ist. Zur Erzeugung des Hauptflusses ist ein permanenter Magnete 15 verwendet. 16 stellt, einen Luftspälf dar, über den sich ein Teil des Kraftlinienflusses schließen kann. 14 stellt einen Auslöseanker dar, der gegen den -Einfluß einer nicht gezeichneten Feder von dem Fluß gehalten wird, solange in der Wicklung 5 kein Strom fließt. Der Eisenweg des Magnetkreises wird an der Stelle des Luftspaltes 16-aus zwei besonderen Teilen 17 und i"8 gebildet, deren witlcsamerAbstanid geändert werden kann. Dies kann beispielsweise dadurch erfolgen, daß einer der beiden Teile in der Richtung auf -den anderen zu beweglich ausgeführt ist, oder daß in dem Lufspalt ein verschiebbarer Keil untergebracht ist, .durch dessen Verschiebung der wirksame Abstand geändert werden kann. Eine besonders einfache Anordnung ergibt sich, wenn die beiden Teile 117 und 18 zueinander zu einem mechanisch festen drehbaren Block vereinigt sind. Durch Verdrehung dieses Blockes kann hierbei, wie dies in Fig.2 angedeutet ist, der wirksame Wert des Lufspältes beliebig geändert werden. Bei einer derartigen Ausbildung ist es beispielsweise möglich, an dem Block unmittelbar eine Skala anzubringen, an der die Ansprechstromstärke eingestellt werden kann.An embodiment of the invention is shown in FIGS. The iron body of the magnetic circuit is denoted by i, the two legs 2 of which are each divided into a pair of legs by recesses, the winding of the release 5 being threaded through the recesses 3. A permanent magnet 15 is used to generate the main flux. 16 represents an air gap, over which part of the flow of force lines can close. 14 shows a trip armature which is held against the influence of a spring (not shown) by the flux as long as no current flows in the winding 5. The iron path of the magnetic circuit is formed at the location of the air gap 16 from two special parts 17 and i "8, the precise spacing of which can be changed. This can be done, for example, by making one of the two parts movable in the direction towards the other or that a movable wedge is accommodated in the air gap, the displacement of which can change the effective spacing.A particularly simple arrangement results when the two parts 117 and 18 are combined to one another to form a mechanically fixed, rotatable block In this case, the effective value of the air gap can be changed as desired in this block, as is indicated in FIG.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES4634D DE890992C (en) | 1940-12-23 | 1942-04-14 | Electromagnet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE223136X | 1940-12-23 | ||
DES4634D DE890992C (en) | 1940-12-23 | 1942-04-14 | Electromagnet |
Publications (1)
Publication Number | Publication Date |
---|---|
DE890992C true DE890992C (en) | 1953-09-24 |
Family
ID=25763477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES4634D Expired DE890992C (en) | 1940-12-23 | 1942-04-14 | Electromagnet |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE890992C (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1059093B (en) * | 1955-12-30 | 1959-06-11 | Optische Anstalt C P Goerz Ges | Holding magnet protection relay |
DE1094865B (en) * | 1957-05-08 | 1960-12-15 | Texas Instruments Inc | Overcurrent switch |
DE1134232B (en) * | 1957-11-22 | 1962-08-02 | Ampex | Device for moving a magnetic tape step by step |
DE1173184B (en) * | 1958-04-22 | 1964-07-02 | Hugh Shaler Knowles | Electromechanical converter, especially for hearing aids |
DE1194056B (en) * | 1961-02-06 | 1965-06-03 | Unilek Ets | Highly sensitive electromagnetic relay |
DE1240165B (en) * | 1961-06-23 | 1967-05-11 | Telefonbau | Electromagnetic pulse switch with a permanent magnet in the iron circuit to generate the contact force in the de-energized state |
DE1247487B (en) * | 1960-03-30 | 1967-08-17 | Comp Generale Electricite | Sensitive relay |
DE1278293B (en) * | 1960-06-10 | 1968-09-19 | Siemens Ag | Contactless position indicator for conveyor systems |
DE1279185B (en) * | 1964-06-03 | 1968-10-03 | Wtz Elektroapp Dresden Wissens | Electromagnet with adjustable pulling force |
DE1639389B1 (en) * | 1968-01-15 | 1971-04-01 | Siemens Ag | PROTECTIVE RELAY WITH BLOCKING MAGNET |
-
1942
- 1942-04-14 DE DES4634D patent/DE890992C/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1059093B (en) * | 1955-12-30 | 1959-06-11 | Optische Anstalt C P Goerz Ges | Holding magnet protection relay |
DE1094865B (en) * | 1957-05-08 | 1960-12-15 | Texas Instruments Inc | Overcurrent switch |
DE1134232B (en) * | 1957-11-22 | 1962-08-02 | Ampex | Device for moving a magnetic tape step by step |
DE1173184B (en) * | 1958-04-22 | 1964-07-02 | Hugh Shaler Knowles | Electromechanical converter, especially for hearing aids |
DE1247487B (en) * | 1960-03-30 | 1967-08-17 | Comp Generale Electricite | Sensitive relay |
DE1278293B (en) * | 1960-06-10 | 1968-09-19 | Siemens Ag | Contactless position indicator for conveyor systems |
DE1194056B (en) * | 1961-02-06 | 1965-06-03 | Unilek Ets | Highly sensitive electromagnetic relay |
DE1240165B (en) * | 1961-06-23 | 1967-05-11 | Telefonbau | Electromagnetic pulse switch with a permanent magnet in the iron circuit to generate the contact force in the de-energized state |
DE1279185B (en) * | 1964-06-03 | 1968-10-03 | Wtz Elektroapp Dresden Wissens | Electromagnet with adjustable pulling force |
DE1639389B1 (en) * | 1968-01-15 | 1971-04-01 | Siemens Ag | PROTECTIVE RELAY WITH BLOCKING MAGNET |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE890992C (en) | Electromagnet | |
DE2501629B2 (en) | Electromagnetic release device | |
DE1198455B (en) | Electromagnetic relay with adhesive characteristics | |
DE734040C (en) | Polarized relay | |
DE1029640B (en) | Electromagnetically controlled valve | |
DE506067C (en) | Electromagnetic switch with two armatures belonging to a common magnet system | |
DE1172774B (en) | Impulse operated, polarized direct current electromagnet | |
DE658555C (en) | Electromagnetic-thermal short-circuit and overcurrent release | |
DE949502C (en) | Controllable magnetic circuit | |
DE887540C (en) | Electromagnetic relay with permanent auxiliary magnet | |
DE911042C (en) | Electromagnet | |
AT206509B (en) | Polarized protection tube changeover contact | |
DE562192C (en) | Train protection device | |
DE416090C (en) | Self-excited direct current machine with strongly variable magnetic flux | |
AT143957B (en) | Current direction-sensitive tripping device for high-speed switches. | |
DE538651C (en) | Influence relay for electrical train protection devices | |
DE1011524B (en) | Electromagnetic relay | |
DE457615C (en) | Overcurrent thermal time release | |
DE912362C (en) | Current-sensitive relay when voltage fluctuates | |
DE1513564C (en) | Magnetic release for circuit breakers | |
DE635347C (en) | Combined regulator and automatic switch, especially for alternators on motor vehicles | |
AT117678B (en) | Balanced magnet system for converting electrical vibrations into acoustic ones. | |
DE1001768B (en) | Change in armature dropout time for electromagnetic relays | |
DE1282182B (en) | Holding magnet release of high sensitivity with permanent magnet and layered yoke body | |
DE947250C (en) | Relays for telecommunications technology purposes |