DE877212C - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- DE877212C DE877212C DEZ2065A DEZ0002065A DE877212C DE 877212 C DE877212 C DE 877212C DE Z2065 A DEZ2065 A DE Z2065A DE Z0002065 A DEZ0002065 A DE Z0002065A DE 877212 C DE877212 C DE 877212C
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- wire
- gap
- magnetic head
- magnetic core
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/23—Gap features
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets
- G11B5/1475—Assembling or shaping of elements
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Description
Magnetkopf Die Erfindung betrifft einen zur Aufnahme, Wiedergabe und Löschung magnetischer Aufzeichnungen dienenden Magnetkopf, der im wesentlichen aus einem mit Erregerspulen versehenen Magnetkern besteht, der im Bereich seines Spaltes den Tonträger einseitig berührt.Magnetic head The invention relates to a recording, reproducing and Erasure of magnetic records serving magnetic head, which essentially consists of consists of a magnetic core provided with excitation coils in the area of its gap touches the sound carrier on one side.
Es war bisher üblich, den Magnetkern aus einem lamellierten Blechpaket herzustellen, das aus einzelnen übereinand@ergeschichteten Eisenblechen, wie bei Übertragern üblich, beistand.Up until now it was customary to make the magnetic core out of a laminated core to produce that from individual iron sheets stacked on top of one another, as in Transmitters usual, assisted.
Diese Herstellung erfordert ein eigenes Werkzeug, mit dem die :einzelnen Bleche ausgestanzt werden m@ußten. Formänderungen von Magnetköpfen, beispielsweise zur jeweiligen Anpassung an die vorhandenen Einbaumaße, mußten infolge zu ändernder Schnittwerkzeuge aus Fertigungsgründen unterbleiben. Ferner bedingt dieser Aufbau des Blechpaketes eine Mindestbauhöhe des Magnetkopfes, die nicht immer mit den vorhandenen Einbaumaßen in Übereinstimmung zu bringen war.This production requires its own tool with which the: individual Sheets had to be punched out. Changes in shape of magnetic heads, for example for the respective adaptation to the existing installation dimensions, had to be changed as a result Cutting tools are omitted for manufacturing reasons. This structure also requires of the laminated core has a minimum height of the magnetic head that does not always match the existing The installation dimensions were to be brought into agreement.
Zur Beseitigung dieser Nachteile besteht nach der Erfindung der Magnetkern aus geformtem Draht, dessen sich überlappende Enden unter Zwischenfü,gen- einer die Spaltbreite bestimmenden, nicht magnetischen Schicht den zur Übertragung ,des Magnetfeldes erforderlichen Spalt bilden.According to the invention, the magnetic core is used to eliminate these disadvantages made of shaped wire, the overlapping ends of which are interposed with one another the non-magnetic layer determining the gap width for the transmission, des Form magnetic field required gap.
Die zur Aufnahme der Erregerspulen bedingte und durch die Einbauverhältnisse geforderte Formgebvng des Drahtes sowie gegebenenfalls seine Aufteilung in mehrere Teilstücke wird zweckmäßig vor der bei Verwendung von Mu-Material notwendigen Vergütung durchgeführt.The one required to accommodate the excitation coils and the installation conditions Required shape of the wire and, if necessary, its subdivision into several Sections are expedient before the remuneration required when using Mu-Material carried out.
Der geringe Querschnitt .eines solchen Drahtes als Magnetkei-n läßt nur geringe. Hysteresisverluste zu, deren dadurch bedingte Aufzeichnungs- oder Wiedergabeverzerrung durch die bekannten, der ErregerwckiungnachgeschaltetenEntzerrungsglieder beseitigt werden kann.The small cross-section of such a wire does not allow it to be magnetized only minor. Hysteresis losses, the resulting recording or playback distortion by the known, the Downstream equalization elements can be eliminated.
D-e den Spalt bildenden Flächen der Drahtenden werden zwecks ;genauer Einhaltung der geforderten Spaltbreite parallel zur Drahtlängsachse ebengeschliffen. Bei Verwendung von Rundmaterial als Magnetkern wird ;es dabei zweckmäßig sein, diese Drahtenden ;auf ;etwa ihren halben Durchmesser abzuarbeiten, so, daß die übereinandergelegten Enden vorzugsweise den Durchmesser des Ausgangsannateriials aufweisen.The surfaces of the wire ends forming the gap become more precise Compliance with the required gap width, ground level parallel to the longitudinal axis of the wire. When using round material as the magnetic core, it will be useful to use this Wire ends; on; to work off about half their diameter so that the superimposed Ends preferably have the diameter of the starting material.
Die ;gemäß diesen Merkmalen hergestellten Mggrnetkeine weisen einen im wesentlichen parallel zur Drahtschleife liegenden Spalt auf, so daß bei anzuwendender üblicher Längsmagnetisierung des Tonträgers dieser senkrecht zur Ebene der Drahtschleife verlaufen muß.The magnesium compounds produced according to these characteristics do not have a substantially parallel to the wire loop lying gap, so that to be applied usual longitudinal magnetization of the sound carrier this perpendicular to the plane of the wire loop must run.
Erfordern die Einbauverhältnisse .eine andere Lage .der Drahtschleife zum Tonträger, so@ können gemäß der Erfindung die Drahtenden winklig abgebogen werden, Juni den Spalt des Magnetkopfes in die ,durch die Anordnung des Tonträgers bedingte Lage zu bringen. Wird beispielsweise ,eine parallel zur Bewegung des Tonträgers geforderte Lage der Drahtschleife verlangt so können die sich Überlapp:end&en , Drahtenden. rechtwinklig abgebogen wenden.If the installation conditions. Require a different position of the wire loop to the sound carrier, so @ the wire ends can be bent at an angle according to the invention, June the gap of the magnetic head in the one caused by the arrangement of the sound carrier Able to bring. For example, one parallel to the movement of the sound carrier required position of the wire loop so the overlap: end & en , Wire ends. turn at right angles.
Die Herstellung eines Magnetkopfes mit diesen erfindungsgemäßen Merkmalen ist ohne Aufwand teurer Werkzeuge möglich und kann daher vorgegebenen Einbauverhältnissen in bequemer Weise angepiaßt werden.The manufacture of a magnetic head with these inventive features is possible without the need for expensive tools and can therefore be installed in the specified installation conditions be pissed off in a convenient manner.
Die Zeichnung stellt mehrere Ausführungsbeispiele @dar. Die Abb. i zeigt. einen Magnetkopf der bisher üblichen Ausführung, dessen Blechpaket aus einzelnen aufeinandergeschichteten, ausgestanzten Blechlliamellen bestand. Dem Magnetkopf gemäß Abb. a a, liegt als Ausgangsmaterial :ein Rundmaterial als Magnetkern zugrunde, dessen Enden auf etwa. einen halben Durchmesser abgearbeitet sind, und zwar derart, daß sie, wie Abb. 2 b zu entnehmen ist, übereinandergelegt dem Durchmesser des Ausgangenaterials entsprechen. Abb.3 zeigt die Verwendung von Vierkantmaterial, dessen den Spalt bildende Flächen zwecks genauer Einhaltung der erforderlichen Spaltbreite eben abgeschliffen wer-.den: Bei diesen Ausführungsbeispielen liegt die Längsausdehnung des Spaltes in der Ebene der Drahtschleife, so daß bei vorzunehmender Längsmagnetisiexung der Tonträger, der ,durch! den ausgezogenen Pfeil dargestellt wird; senkrecht zur Drahtschleife Sam Spalt vorbeigeführt werden muß. Wird .eine Bewegung des Tonträgers parallel zur Ebene der Drahtschleife verlangt, so können, wie Abb. q. zeugt, die sich überlappenden Drahtenden winklig, vorzugsweise rechtwinklig, abgebogen werden. In den gezeigten Ausführungsbeispielen ist die Erregerspule schematisch als eine einzige Spule angedeutet. Selbstverständlich können mehrere Erregersplulen auf dem Magnetkern angeordnet werden. Auch die Aufteilung -des Magnetkerns in mehrere Teile, beispielsweise zwecks leichter Montage, liegt im Rahmen der Erfindung. Der oder die Magnetkerne werden, wie bisher üblich, in, nicht magnetischem Material derart festgelegt, daß insbesondere .die Lage des Spaltes zum Tonträger gesichert ist.The drawing represents several exemplary embodiments. Fig. I shows. a magnetic head of the usual design, whose laminated core consists of individual stacked, punched sheet metal lamellae consisted. The magnetic head according to Fig. a a, the basic material is: a round material as a magnetic core, its ends to about. half a diameter are processed in such a way, that they, as can be seen in Fig. 2b, superimposed on the diameter of the starting material correspond. Fig.3 shows the use of square material, its forming the gap Areas ground down to ensure that the required gap width is precisely maintained wer-.den: In these exemplary embodiments, the longitudinal extent of the gap is in the plane of the wire loop, so that when the longitudinal magnetization is to be carried out Sound carrier, the, through! the solid arrow is shown; perpendicular to the wire loop Sam Spalt has to be brought by. If. A movement of the sound carrier is parallel at the level of the wire loop, as shown in Fig. q. testifies to the overlapping Wire ends are bent at an angle, preferably at right angles. In the shown Embodiments, the excitation coil is indicated schematically as a single coil. Of course, several excitation coils can be arranged on the magnetic core. Also the division of the magnetic core into several parts, for example to make it easier Assembly is within the scope of the invention. The magnetic core or cores will be, as before customary in, non-magnetic material set in such a way that in particular .die Position of the gap to the sound carrier is secured.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ2065A DE877212C (en) | 1951-08-17 | 1951-08-17 | Magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ2065A DE877212C (en) | 1951-08-17 | 1951-08-17 | Magnetic head |
Publications (1)
Publication Number | Publication Date |
---|---|
DE877212C true DE877212C (en) | 1953-05-21 |
Family
ID=7618376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEZ2065A Expired DE877212C (en) | 1951-08-17 | 1951-08-17 | Magnetic head |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE877212C (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1014340B (en) * | 1954-03-25 | 1957-08-22 | Protona Produktionsgesellschaf | Laminated speaking head, especially ring head for magnetic recorders |
DE1037166B (en) * | 1954-01-18 | 1958-08-21 | Standard App Fabrik G M B H | Device for tape recording and / or playback of electrical processes or other processes that can be converted into such with several magnet systems arranged next to one another |
DE1038776B (en) * | 1957-10-21 | 1958-09-11 | Grundig Max | Magnetic head for sound recording and reproducing devices |
DE1055256B (en) * | 1957-05-11 | 1959-04-16 | Telefonbau & Normalzeit Gmbh | Magnetic head for recording or playback with angled pole pieces |
US2967750A (en) * | 1956-04-04 | 1961-01-10 | Sonotone Corp | Magnetic record transducing heads |
DE1172311B (en) * | 1960-09-20 | 1964-06-18 | Ibm | Magnetic head |
DE1176713B (en) * | 1960-03-10 | 1964-08-27 | Telefunken Patent | Magnetic tape device with a multiplicity of magnetic heads arranged adjacent in the direction of tape travel |
DE1219704B (en) * | 1955-09-14 | 1966-06-23 | Bernard Lowe | Magnetic head arrangement for devices with recording in both tape directions |
WO1989004535A1 (en) * | 1987-10-30 | 1989-05-18 | Ampex Corporation | Magnetic transducer |
-
1951
- 1951-08-17 DE DEZ2065A patent/DE877212C/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1037166B (en) * | 1954-01-18 | 1958-08-21 | Standard App Fabrik G M B H | Device for tape recording and / or playback of electrical processes or other processes that can be converted into such with several magnet systems arranged next to one another |
DE1014340B (en) * | 1954-03-25 | 1957-08-22 | Protona Produktionsgesellschaf | Laminated speaking head, especially ring head for magnetic recorders |
DE1219704B (en) * | 1955-09-14 | 1966-06-23 | Bernard Lowe | Magnetic head arrangement for devices with recording in both tape directions |
US2967750A (en) * | 1956-04-04 | 1961-01-10 | Sonotone Corp | Magnetic record transducing heads |
DE1055256B (en) * | 1957-05-11 | 1959-04-16 | Telefonbau & Normalzeit Gmbh | Magnetic head for recording or playback with angled pole pieces |
DE1038776B (en) * | 1957-10-21 | 1958-09-11 | Grundig Max | Magnetic head for sound recording and reproducing devices |
DE1176713B (en) * | 1960-03-10 | 1964-08-27 | Telefunken Patent | Magnetic tape device with a multiplicity of magnetic heads arranged adjacent in the direction of tape travel |
DE1172311B (en) * | 1960-09-20 | 1964-06-18 | Ibm | Magnetic head |
WO1989004535A1 (en) * | 1987-10-30 | 1989-05-18 | Ampex Corporation | Magnetic transducer |
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