DE1223473B - Sheath core sheet cut - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN 'MTTMt PATENTAMT Int. α .:

HOIf

DESIGN SCREEN

German class: 21g-31/02

Number: 1223 473

File number: P 26141 VIII c / 21 g

Filing date: November 30, 1960

Opening day: August 25, 1966

Shell sheet metal sections have a center leg, two outer legs and two yokes, which connect the middle and outer legs at their ends. Have one-piece shell core sheet metal cuts in addition, there is a separation in each power flow path in order to enable them to be nested in finished bobbins. The subject of the invention is a one-piece cladding core lamination section, which has particularly favorable magnetic properties with relatively little material expenditure and in Manufacturing and handling is easy. The excellent magnetic properties of the cladding core lamination cut of the invention are used both with electrical steel sheets without a preferred magnetic direction as well as those with one or two magnetic preferred directions in the plane of the sheet and achieved can be achieved for these different electrical sheet materials with a single cut shape.

As is well known, the unfavorable influences of the parting lines, which interrupt the power flow path represent, on the magnetic core properties are reduced by overlapping. A complete Overlapping is achieved when at the point of an interruption in the power flow path in a Sheet metal layer already through the other sheet metal layers uninterrupted at this point of the .full force flow cross-section is provided.

According to the state of the art there is. One-piece shell core sheet metal sections, the joints of which run in a straight line continuation of the two longitudinal edges of the central leg through one yoke. Furthermore, there are cladding core sheet metal cuts, the parting lines of which run over the one yoke symmetrically inwardly inclined towards the center line relative to the straight continuation of the central leg edges. Such core sheet metal cuts are also made with a yoke, the width of which is greater than half the width of the central limb. With the resulting lengthened parting lines, overlaps can be achieved with ever alternating stratification, which - depending on the extent of the parting line inclination - are only complete if the width of the yoke is the same (for straight lines) or at least ψΤ ₄ (for at the yoke outer edge up to joints inclined to the center line) is the width of the center leg. Such wide yokes are too expensive in most cases.

The excessive effort has led to the width of the yoke in the case of conventional cladding core sheet metal cuts only to be enlarged to three quarters of the center leg width and the parting lines symmetrically across the Yoke pointed or almost pointed (on the outside edge of the yoke, cladding core sheet cut

Applicant:

Bernhard Philberth,

Dr. Karl Philberth,

Munich 23, Destouchesstr. 14th

Named as inventor:

Bernhard Philberth,

Dr. Karl Philberth, Munich

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609 657/321

Claims (1)

3 4 different shaped sheet metal strips and has in every iron cross-section of at least the same size Power flow path on several separations, which moreover, as achieved in the middle leg. That way will because the core sheet metal strips in the core package are only possible in it with practically no magnetic disadvantages, The parting lines are arranged in two different positions in a production-related manner can, just simply be mortgaged. 5 widths. Multiple (instead of single) mortised parting lines, since yoke material reinforcements offer advantages in those at the point of a parting line, yoke widths j are up to three quarters of the central interrupted sheet metal layer on average (instead of one leg width k) there are still no unbearable material several uninterrupted sheet metal layers more work, especially if the material has a significantly reduced influence on the parting line. According to only one preferred magnetic direction in the prior art yoke, however, the flux of force flows through at least two different core sheet metal cut forms, generally perpendicular to the preferred direction. The practically optimal ratios or multi-part sheet metal layers for the construction of a core package are required for all magnetic materials with a yoke width y, which is very disadvantageous from two thirds to three quarters of the central limb in terms of production technology. 15 wide k. By contrast, the object of the invention From the Jochaußenkante, the second Trennfuge.a a one-piece jacket core sheet section which is connected to and symmetrically to the first parting line e lying just one-piece sheet metal layers of the same sectional shape imaginary line i an area F is included a jacket core with in each force flow path of the four depending on which enables three mortised butt joints to be layered for an uninhibited transition of the power, ao flow at the separating joints is of great importance. The length of its separating joints can be dimensioned in such a way. However, the imaginary use is also important, so that without otherwise superfluous material bonding line d, which from the second inner overhead also has a window corner B (from which the second gap width is Joints of the butt joint α starting) practically disappears in a straight direction to the kerf influence. 25 point N of the center line nn with the yoke outer edge The cladding core sheet metal section according to the invention runs: In particular in two strongly preferred-oriented windows and two separating joints, which go from the two material (one or two-fold preferred orientation) and window corners at one end of the middle limb - in the area of the magnetic saturation of the middle and over the adjoining yoke towards the yoke ice, the central leg force flow runs up to the outer edge (FIG. 1). The width of the yoke 30 of this imaginary connecting line d practically parallel is greater than half and at most equal to three to the central limb without a significant reduction in quarters of the central limb width. This cladding core - the field density. The power flow, however, is characterized by sufficiently large crystal areas with a reduced field center line nn asymmetrical joints e and α density are available to uninhibited in the (F i g. 3) that the first joint e in continuation 35 others To deflect direction or to be able to pass over essentially vertically in neighboring positions of the central leg edge. Therefore, an imaginary connecting line d enclosed area runs from the yoke to the yoke - approximately exactly perpendicular or slightly to the outer edge, the second parting line α and this center line nn inclined or curved - while the second parting line α runs in such a way that it is advantageous, however, at Significance compared to the point of intersection A with the outer edge of the yoke receding between area F and therefore appropriately smaller than the point of intersection / that of the first separating line e . A size of the area / imaginary line lying symmetrically / and the intersection of about half to three quarters of the area F. point N of the center line nn with the yoke outer edge is advantageous. Leg opposite the middle leg is in The jacket core sheet metal cuts according to the invention can be made to any size by means of corresponding outer legs, as shown in FIG. 2 shown, can be set up in four different widths. Such material cross-sectional layers are in the core package. For simple trans-amplifications, the magnetic Ausfonnatoren, which do not depend on extremely small scatter in the environment and the magnetic single-joint influences, can be used less than scatter from the environment as well as the iron effect of these possible positions, 50 and blind losses significant, so that increased means alternate between 1 and 4. Even the use of only leg induction can be used, which is a type of layer in individual cases; Reduces the ratio of effort to performance. With correspondingly strongly widened gaps together with the complete overlap result, air gap iron can be produced in this way so that these cores are an unusually good maker. If, however, you change at 55 the magnetization function, which is sometimes even more favorable with the core package separation with all four possible than the pure material magnetization function. borrowed documents from that more in the next core is largely optimal for all cases an exterior sheet metal layer, the joints in reversed core Jochen leg width m of four-sevenths are to four-sixth that always / c in the next Kernblech- the center leg width.
the two different separating lines were at 60 interchanged core windows are - for example always in the patent claims:
Cycle 1—2—3—4—1—2—3—4, etc. - so can 1. cladding core sheet metal cut with two windows already with a yoke width / of about two thirds of the and two separating joints that of the two window center leg width k complete overlaps can be achieved at one end of the middle limb, since at. a certain point in each case 65 and over the adjoining yoke, the width of which only every fourth sheet metal layer has a parting line. greater than half and at most equal to three Regardless of the width of the separating joints, a quarter of the width of the middle leg is to the yoke so that an uninterrupted outer edge runs at all points of the yoke, thereby identifying- shows that the first parting line (e) runs in continuation of the middle leg edge essentially perpendicular to the yoke, while the second parting line (a) runs in such a way that its point of intersection (A) with the yoke outer edge between the point of intersection (/) of the first parting line ( e) the imaginary line (?) and the intersection (N) of the center line (nn) with the yoke outer edge lies symmetrically. 2. cladding core lamination section according to claim 1, characterized in that the yoke width (j) is approximately two thirds to a maximum of three quarters of the center leg width (k) . 3. cladding core lamination section according to claim 1 or 2, characterized in that the yoke outer edge, the second parting line (d) and the imaginary connecting line (d) between the second window corner (B) and the intersection (N) of the center line (nn) with the area (J) bounded by the outer edge of the yoke is half to three quarters of the area (F) bounded by the outer edge of the yoke, the second parting line (a) and the imaginary line (i) lying symmetrically to the first parting line (e) . 4. cladding core lamination section according to one of claims 1 to 3, characterized in that the outer leg width (m) is four sevenths to four sixths of the central leg width (k) . Considered publications: German utility model No. 1 719 876;
«5 Swiss patents nos. 47 999, 347 276; U.S. Patent No. 2,896,181;
Manual "Soft Magnetic Materials" from the company Vacuumschmelze, Hanau, 1957, p. 281. 1 sheet of drawings 609 657/321 8.66 © Bundesdruckerei Berlin