Core component

Abstract

A core component is disclosed. In an embodiment, the core component includes at least one edge that has a transition, wherein the transition is asymmetrical.

Claims

1. A core component being a cylinder comprising: a first surface and a second surface of the cylinder; and at least one edge having a non-symmetrical transition of the cylinder, wherein the edge is arranged between the first surface and the second surface, wherein the second surface extends along a height direction of the cylinder and the first surface extends perpendicular to the height direction, and wherein the non-symmetrical transition encloses an angle larger than 20° and smaller than 90° with a mathematical extension of the second surface within a material of the core component.

2. The core component according to claim 1, wherein the non-symmetrical transition in dissimilar directions has dissimilar edge dimensions (x, y).

3. The core component according to claim 1, wherein the core component comprises a face side comprising a clearance, and wherein the edge with the non-symmetrical transition is provided in the clearance.

4. The core component according to claim 1, wherein the non-symmetrical transition is configured to reduce mechanical stresses in the core component.

5. The core component according to claim 2, wherein a ratio of the edge dimensions (x, y) of the non-symmetrical transition in a first direction in comparison to a second direction is equal to or more than 1.2.

6. The core component according to claim 1, wherein a first edge dimension (x) of the non-symmetrical transition in the height direction is smaller than a second edge dimension (y).

7. The core component according to claim 1, wherein the core component comprises regions with dissimilar heights, and wherein the edge is located between regions of dissimilar heights.

8. The core component according to claim 1, wherein the non-symmetrical transition at least in portions has a rectilinear contour.

9. The core component according to claim 1, wherein the non-symmetrical transition at least in portions has an inwardly bulging shape.

10. The core component according to claim 1, wherein the non-symmetrical transition at least in portions has an elliptic contour.

11. The core component according to claim 1, wherein the non-symmetrical transition is free of sharp edges.

12. The core component according to claim 1, wherein the edge is located on a face side of the core component.

13. The core component according to claim 1, wherein the core component is configured to receive a further component.

14. The core component according to claim 1, wherein the edge is configured to route through a wire.

15. A component arrangement comprising: the core component according to claim 1; and a further component located in the core component.

16. The component arrangement according to claim 15, wherein the further component is a wire-wound component, and wherein a wire is routed out through the edge of the core component.

17. The core component according to claim 1, wherein the non-symmetrical transition at least in portions has a parabolic contour.

18. The core component according to claim 1, wherein the non-symmetrical transition encloses an angle smaller than 5° with a mathematical extension of the first surface within the material of the core component.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The subject matter described herein will be explained in more detail hereunder by means of schematic exemplary embodiments which are not to scale.

(2) In the figures:

(3) FIG. 1 shows a fragment of a core component with a non-symmetrical transition in a simplified sectional illustration;

(4) FIG. 2A shows a first embodiment of a core component with a non-symmetrical transition in a lateral view;

(5) FIG. 2B shows the core component of FIG. 2A in a perspective view;

(6) FIG. 3A shows a second embodiment of a core component with a non-symmetrical transition in a lateral view;

(7) FIG. 3B shows the core component of FIG. 3A in a perspective view;

(8) FIG. 4 shows a third embodiment of a core component with a non-symmetrical transition in a perspective view.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

(9) In the figures hereunder, same reference signs preferably indicate functionally or structurally equivalent parts of the various embodiments.

(10) FIG. 1 in a sectional illustration shows a fragment from a core component 1. The core component 1 is preferably configured as a ferrite core. The core component 1 is sintered, for example. The core component 1 may interact with a further core component. The further core component may be configured as a coil core, for example, and be wound with a coiling wire. The present core component 1 may be free of windings. Wires of the coil core may be routed out of the present core component 1 and be electrically connected. The core component 1 has outer dimensions in the range from 6 mm to 12 mm, for example.

(11) The core component 1 has an edge 2. The edge is configured as an inner edge, for example. The edge 2 is configured in a clearance, for example, in order for electrical wires to be routed out. The edge 2 is formed by the convergence of two surfaces 3, 4 of dissimilar gradients. A first surface 3 is disposed in a horizontal manner; a second surface 4 is disposed in a vertical manner. Both surfaces 3, 4 run so as to be perpendicular to the image plane. If the surfaces 3, 4 were to converge in a transition-free manner, the core component 1 would have a sharp edge 5, the latter being indicated by a dashed line herein. Presently, this sharp edge 5 would be at an angle of 90°, running into the image plane. A sharp edge 5 is often a potential weak spot and may be the point of origin of fissures, in particular following mechanical or thermal loading.

(12) In order for the robustness of the core component 1 to be increased, the edge 2 has a transition 7. The transition 7 is configured so as to be non-symmetrical. In particular, the transition 7 is not axially symmetrical in relation to a bisectrix of the imaginary sharp edge 5, or when viewed in a three-dimensional manner in relation to a bisectrix plane is configured so as not to be symmetrical in terms of area, respectively.

(13) In particular, the transition 7 has dissimilar first and second edge dimensions x, y which in the picture run in a vertical or horizontal direction, respectively. The first edge dimension x in the vertical direction is smaller than the second edge dimension y in the horizontal direction. It has been established to be advantageous for the edge dimension to be chosen to be particularly large in that direction in which large tensile stresses arise, i.e. presently in the horizontal direction. The ratio of the edge dimensions y, x is preferably more than 1.1; particularly preferably said ratio is at least 1.2. For example, the ratio is more than 1.0 and smaller than or equal to 2.0. The exact value of the edge dimensions x, y depends inter alia on the dimensions of the core component 1. For example, the edge dimension x in the vertical direction is 1.0 mm.

(14) The transition 7 has an inwardly bulging shape. The contour 15 of the transition has a parabolic profile. In relation to a mathematical extension of the second surface 4, the contour line of the contour 15 forms an acute angle α of more than 20°. The contour line approaches the first surface 3 in an approximately asymptotic manner, at the intersection point forming as small an angle as possible with the surface 3, for example an angle β of less than 5°.

(15) The transition 7 according to the invention may have another profile and an another orientation than is shown in FIG. 1. In particular, the transition 7 may also be rotated arbitrarily by 0° to 360° about the central axis thereof or about an arbitrary axis.

(16) Alternatively or additionally, the core component 1 may have an outer edge with a non-symmetrical transition. In the case of an outer edge, the term “removal” may also be used instead of the term “transition”.

(17) FIG. 2A in a lateral view shows a first embodiment of a core component 1 with a non-symmetrical transition 7. FIG. 2B shows this core component 1 in a perspective view. The core component 1 has the basic shape of a cylinder, in particular of a circular cylinder. The core component 1 is configured as a hollow cylinder. A face side 8 of the core component 1 is configured so as to be structured. In particular, a clearance 9 through which wires may be routed, for example, is provided. By virtue of the clearance 9 the core component 1 has regions of dissimilar heights. In particular, the core component 1 within the clearance 9, in particular on the surface 3 in the clearance 9, has a smaller height than on a region of the face side 8 in which no clearance 9 is configured.

(18) The circular or annular base area of the cylinder is merely intended to be an example. The base area may also be of rectangular, oval, or any other shape, for example. For example, the core component has the basic shape of a cuboid. The core component may also have a shape other than a cylindrical shape. For example, the core component has an ellipsoid basic shape.

(19) The core component 1 within the clearance 9 has an edge 2 with a transition 7. The transition has a first edge dimension x which is smaller than a second edge dimension y. The second larger edge dimension y runs in the plane of a cross section of the core component 1. In the present picture, this would be a horizontal plane through the core component 1 of FIG. 2A. It has been demonstrated that the robustness of the core component 1 may be increased by way of a larger edge dimension y in the plane of the cross section.

(20) The transition 7 has a contour 15 with two rectilinear portions 10, 11. It can be seen in the perspective view of the core component 1 in FIG. 2B that the rectilinear portions 10, ii of the contour 15 represent the contours of two level planar regions 16, 17. The rectilinear portions 10, 11 have dissimilar gradients. In particular, the gradient of the first rectilinear portion 10 is less than the gradient of the second rectilinear portion. Accordingly, the two level planar regions 16, 17 are dissimilarly inclined. The transition regions 12, 13, 14 between the rectilinear portions 10, 11 and the adjoining first and second surfaces 3, 4 are in each case rounded.

(21) For example, the first rectilinear portion 10 may run up to the bisectrix, and the second rectilinear portion 11 may adjoin thereto.

(22) The geometry of the transition 7 may be optimized as follows, for example. A core component 1 which is configured like the core component 1 of FIGS. 2A and 2B but has a symmetrical transition, in particular a symmetrical chamfer, is manufactured. The core component 1 may be manufactured for real or by way of a simulation. The chamfer has a rectilinear contour, for example, and with the two surfaces 3, 4 forms an angle of 45°. The precise position of the intersection points of the contour line and the surfaces 3, 4 depends on the geometric realities of the core component 1. The mechanical stresses in the core component 1 are subsequently established, for example by way of a simulation or in a physical drop test. Thereafter, that edge dimension of the transition that lies on the same side of the bisectrix of the imaginary sharp edge as the largest mechanical stresses in the region of the transition is enlarged. The new transition in one direction now has the previous edge dimension, and in the other direction has an extended edge dimension. The new contour of the transition may be configured so as to be rectilinear, for example. Alternatively, the new contour may be assembled from a plurality of rectilinear portions, for example. The contour on that side of the bisectrix that is assigned to the edge dimension to be retained is retained, for example. Then, proceeding from the intersection point of the contour line and the bisectrix on that side of the bisectrix that is assigned to the extended edge dimension, a further straight portion is configured such that the transition in this direction now has the second edge dimension.

(23) FIG. 3A in a lateral view shows a second embodiment of a core component 1 with a non-symmetrical transition 7. FIG. 3B shows this core component 1 in a perspective view. The core component 1 shown here is configured so as to be substantially identical to the core component 1 of FIGS. 2A and 2B; however, the former has another geometry of the non-symmetrical transition 7.

(24) The transition 7 has an elliptic contour 15. The edge dimension x in the height direction corresponds to the minor semiaxis of the ellipse, and the edge dimension y corresponds to the major semiaxis of the ellipse.

(25) The stability of a core component 1 having a non-symmetrical transition as shown in FIGS. 2A and 2B was established by a drop test. For comparison, a drop test was carried out with core components in which the transition was configured as a symmetrical chamfer. The core components 1 with a non-symmetrical transition displayed higher stability in the drop test.

(26) FIG. 4 in a perspective view shows a third embodiment of a core component 1 with a non-symmetrical transition 7. The core component 1 is configured as a cuboid. A cuboid may be considered to be a cylinder with a rectangular, for example a square, base area. The core component 1 has a closed bottom 18. The core component 1 forms a housing, for example. The core component has two edges 2, each with a non-symmetrical transition 7. The transition 7 is configured as in FIGS. 2A and 2B.