DE202013000695U1 - Separating element for a toroidal core choke and toroidal core - Google Patents

Abstract

formed as an insert separating element for a toroidal core choke (13), with - two mutually parallel integrally connected legs (1, 2), - whose parallel outer sides (3, 4) are provided to rest against the inside of the ring core (13), - depending on a transverse to the legs (1, 2) extending end face (6, 7), - at least one of an end face (6, 7) outgoing unilaterally closed slot (8, 12), and with - at each end of the legs (1 , 2) each one outwardly directed retaining lug (5).

Description

The invention is based on a separating element for a toroidal core choke.

Coils or inductors with an annular magnetic core are components that are commonly used in electronics. If several windings are applied to the toroid, there is a need to separate these windings by a release agent from each other.

Thus, a toroidal core choke with a potential separation is already known, which is designed as a hollow cylindrical element with two integrally formed webs which bear against the inside of the toroidal core under tension ( EP 0 258 592 B1 ).

A similar device for potential separation in a toroidal core choke is known which has a central region and two insulating regions which project in the radial direction ( DE 10 2009 054 001 A1 ).

Also known is an insulating plate for insertion into a toroidal core choke that bears against the inside of the toroidal core choke under tension ( DE 30 47 603 A1 ).

It is also known to form the potential separation as a holder which fixes the toroidal core on a base ( DE 10 2010 031 292 A1 ).

The invention is based on the object to provide a separator for a toroidal coil, which is easy to install with a simple structure and facilitates the handling of the toroidal core.

To solve this problem, the invention proposes a separating element with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims. The invention also proposes a toroidal core for a coil with such a separator.

The separation element proposed by the invention has two legs whose outer sides are intended to rest against the inside of the toroidal core. By the outwardly directed retaining lugs on both legs is ensured that the separator, once it is inserted into the toroidal core, is fixed to this and does not fall out again. This facilitates the handling of the toroidal core. The at least one slot makes it possible for the two legs to spring inwards during insertion into the toroidal core, so that the retaining lugs can be pushed through at the front side when inserting.

In a further development of the invention it can be provided that the insert is designed as a plate, which preferably has the same thickness everywhere. It can be very easily manufactured as an injection molded part.

In a further development of the invention can be provided according to a further feature that a slot is arranged centrally between the outer sides of the two legs. In particular, the separator formed as an insert may be formed symmetrically to a center line between the two legs.

In a further embodiment of the invention it can be provided that the separating element has two outgoing from an end side symmetrically arranged to a center line between the outer sides of the legs slots. The provision of a plurality of slots distributes the deformation when inserting the separating element in the toroidal core to larger areas. In addition, material can be saved.

In the event that two symmetrically arranged to a center line slots and a centrally disposed slot are present, it can be provided in a further embodiment of the invention that the central slot emanates from the other end side than the two lateral slots.

In a further embodiment of the invention can be provided that the width of at least the middle slot corresponds to the thickness of the plate of the insert.

It can also be provided in a development that the length of at least one slot, preferably all slots, is greater than half the distance between the two end faces of the insert from each other.

The invention also proposes a toroidal core having a separator as described herein.

The separating element can be inserted into the toroidal core such that at least the edges of the outer sides bear against the inner sides of the toroidal core, wherein the axial position is determined by the retaining lugs taking over the axial securing.

The retaining lugs can in particular be shaped so that they act on the transition of the cross section of the toroidal core to its two end faces, ie not on the end faces themselves. The toroidal cores have an approximately rectangular cross section with rounded edges, so that the Hold tabs at the location of the rounded edges can attack.

It can also be provided that the end faces of the insert do not project beyond the planes of the mutually remote end faces of the toroidal core.

It can thereby be achieved that the toroidal core provided with the separating element does not require more space than the toroidal core without the separating element and thus never protrudes beyond the outer dimensions of the overall part, that is to say the toroidal core with the direction of the coil.

It has been mentioned that the separating element is inserted into the toroidal core in such a way that the outer sides of its legs bear against the inside of the toroidal core. This can also happen under tension.

In a further embodiment of the invention can be provided that two separating elements are plugged together to form a cross-shaped double partition element, which is thereby made possible that the separating elements have a central slot which corresponds to the thickness of the plate and at least to the middle of the distance between the End faces is enough. As a result, a cross-shaped separating element can be realized by plugging together, in which it is also ensured that the separating elements do not protrude beyond the planes of the end faces of the toroidal core.

Further features, details and advantages of the invention will become apparent from the claims and the abstract, the wording of which is incorporated by reference into the content of the description, the following description of preferred embodiments of the invention and with reference to the drawing. Hereby show:

1 the view of a separating element according to the invention;

2 the perspective view of the separating element of 1 ;

3 a cross section through a toroidal core with inserted separating element;

4 the top view of the arrangement of 3 ;

5 a perspective view of a toroidal core with inserted separating element;

6 schematically a cross section through a coil assembly;

7 one of the 3 corresponding section through a provided with a coil toroidal core;

8th the view of a component.

The 1 shows a view of a proposed by the invention separating element, which is designed as an insert for a toroidal core. The separator contains two legs 1 . 2 that run parallel to each other and also parallel to each other outside 3 . 4 exhibit. The two outer sides 3 . 4 are straight and have at their ends in each case a projection in the form of a retaining lug 5 on. The retaining lugs 5 protrude over the outsides 3 . 4 out before, and their sides facing each other obliquely at an angle of about 60 ° relative to the respective outer side 3 . 4 , wherein an angle between about 30 ° and 80 ° is possible.

The separator has transversely to the outsides 3 . 4 the two thighs 1 . 2 arranged end faces 6 . 7 on. The basic shape of the separator is a rectangle. Both ends 6 . 7 run in the side view of 1 straightforward, as well as the outsides 3 . 4 the two thighs 1 . 2 ,

How to get a perspective view of 2 Both sides are outsides 3 . 4 as well as the front sides 6 . 7 not only in the side view of 1 straightforward, but also just.

From the in 1 top edge shown above 6 go a slot 8th out, its direction 9 parallel between the outsides 3 . 4 lies and in the middle between the two outer sides 3 . 4 is arranged. The slot 8th has parallel side edges 10 up and ends in a rounded end 11 , It extends to just before the opposite end 7 ,

From the opposite in 1 bottom side drawn 7 go two slots 12 out, which is also parallel to the outsides 3 . 4 the two thighs 1 . 2 run. Also these slots 12 have parallel side edges 10 , where the side edges 10 not necessarily be parallel, and extend to just before the opposite end 6 , The slots 12 are arranged in the example shown, that they each center between the closer outer side 3 . 4 and the middle slot 8th run.

The width of the between the slots 12 . 8th . 12 remaining parts of the separating element is approximately the same everywhere.

The following ones 3 shows a section through a toroidal core 13 with an inserted separating element. The ring core has a cross section in the form of a rectangle with rounded edges. The separator is so in the toroidal core 13 used that retaining lugs 5 at the rounded edges of the toroidal core 13 attack and thereby the separating element in the axial direction, ie in 3 up or down, position. The separator is so to the toroidal core 13 adjusted that the distance of the outsides 3 . 4 about the inner distance of the toroidal core 13 is the same, and that the distance of the end faces 6 . 7 from each other the distance of the planes of the end faces 14 of the toroidal core 13 equivalent. This causes the end faces 6 . 7 of the separating element lie in the same plane as the end faces 14 of the toroidal core 13 , In other words, the toroidal core decreases 13 with the separating element no more space than the toroidal core 13 without the separator.

In the presentation of the 3 the separator is used in the same orientation in which it is in 1 is designated. The reverse position is possible in the same way, so that the separating element before its insertion into the toroidal core 13 does not have to be specially aligned.

The 4 shows a plan view of the arrangement of 3 from above. It can also be seen here that the end faces 14 of the toroidal core 13 stay clear of the separator.

The 5 shows in perspective the arrangement of the separating element in the toroidal core 13 ,

In the 6 is a schematic section through the arrangement of 5 with two coil windings 15 shown. It can also be seen that the separating element, the two coil windings 15 keeps separated, although the separator the end faces 14 of the toroidal core 13 leaves free.

7 shows again one of the 3 corresponding section through one with coil windings 15 provided toroidal core 13 , Again, you can see that the front ends 6 . 7 of the separating element lie in the same plane as the end faces 14 of the toroidal core 13 ,

The 8th to which reference is now made, shows a finished coil component in which on a support plate 16 a toroidal core 13 is attached with two coil windings. The ends of the coil windings 15 to lead. through notches in the bracket side 16 downward. The two coil windings 15 are through that in the interior of the toroidal core 13 inserted separating element separated from each other.

In the 1 shown slots 9 . 12 allow it, that the thighs 1 . 2 feathers inside, so when inserting the separating element in the insertion direction respectively front retaining lugs 5 on the inside of the toroidal core 13 can be pushed past until they feather at the opposite end and there at the rounded edges of the toroidal core 13 can attack.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0258592 B1 [0003]
• DE 102009054001 A1 [0004]
• DE 3047603 A1 [0005]
• DE 102010031292 A1 [0006]

Claims (12)

insert designed as a separating element for a toroidal core choke ( 13 ), with - two mutually parallel connected legs ( 1 . 2 ), - whose parallel outer sides ( 3 . 4 ) to the plant on the inside of the toroidal core ( 13 ) are provided, - one transverse to the legs ( 1 . 2 ) extending end face ( 6 . 7 ), - at least one of an end face ( 6 . 7 ) outgoing unilaterally closed slot ( 8th . 12 ), as well as with - at each end of the thighs ( 1 . 2 ) one outwardly directed retaining lug ( 5 ). A separator according to claim 1, wherein the insert has the same thickness throughout. Separating element according to claim 1 or 2, wherein a slot ( 8th ) in the middle between the outsides ( 3 . 4 ) of the thighs ( 1 . 2 ) is arranged. Separating element according to one of the preceding claims, with two of the same end face ( 7 ) outgoing symmetrically to a center line ( 9 ) between the outer sides ( 3 . 4 ) of the thighs ( 1 . 2 ) slots ( 12 ). Separator according to claim 3 or 4, wherein the width of at least the central slot ( 8th ) corresponds to the thickness of the insert. Separating element according to one of the preceding claims, wherein the length of at least one slot ( 8th . 12 ) is greater than half the distance of the two end faces ( 6 . 7 ) of the use of each other. Separator according to one of Claims 3 to 6, in which the middle slot ( 8th ) from another end face ( 6 ) as the two symmetrical to the thighs ( 1 . 2 ) slots ( 12 ). Toroidal core with a separator according to one of the preceding claims. Toroidal core according to Claim 8, in which the end faces ( 6 . 7 ) of the insert and / or the retaining lugs ( 5 .) not on the levels of the opposite end faces ( 14 ) of the toroidal core ( 13 ) protrude. Toroidal core according to Claim 9, in which the end faces ( 6 . 7 ) of the insert and / or the retaining lugs ( 5 ) in the same plane as the opposite end faces ( 14 ) of the toroidal core ( 13 ) lie. Toroidal core according to one of claims 8 to 10, wherein the separating element on the inside of the toroidal core ( 13 ) is energized. Toroidal core according to one of claims 8 to 11 with two separating elements according to one of claims 3 to 7, which are inserted into one another to form a cross.

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