Winding arrangement of a coil

Details Winding arrangement of a coil Winding arrangement of a coil

1998-05-22

2001-08-07

Gellner, Michael L. (Department: 2832)

Inductor devices

Coil formed of parallel connected conductors

Crossed or transposed conductors

C336S186000, C336S185000

Reexamination Certificate

active

06271743

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a method for producing a winding arrangement of a coil, to an electric conductor for use with the method and to a winding arrangement produced according to the method.
Winding an electric conductor onto a coil form is a known method of producing a coil, for example, a coil for a transformer. With regard to wired-up winding arrangements, successively winding individual part windings is necessary. The part windings are subsequently wired up to one another. A special type of wired-up winding arrangement is the so-called continuous turn-over winding. Unfortunately, producing a coil having such a winding is very expensive.
The German Patent Publication DE-A1-3214171 discusses such a winding arrangement. The conductor used comprises subconductors which are connected in parallel and series.
The object of the present invention is to specify a method which simplifies the production of a coil. A further object is to provide an electric conductor for use in such a method and to specify the winding arrangement produced according to the method.
SUMMARY OF THE INVENTION
The method of present invention achieves the aforementioned object by joining a plurality of conductor portions such that they at least partially overlap one another but are insulated against one another to form a conductor and winding the conductor. A substantial time saving is achieved by producing a coil in this way. The coil can be wound substantially more quickly by the method of the present invention than heretofore. This is particularly true when a conductor is used in which additional measures, which were heretofore carried out during the winding operation, are performed before the winding operation. This relates, for example, to the insertion of separators for an insulation between windings or an edge protector. The method of the present invention is also suitable for interleaved windings.
In a preferred embodiment of the present invention, at least a part of the conductor is wound onto a winding form with the formation of a disk winding. Particularly large savings in fabrication are possible here, since at least two disk coils are produced during the winding operation. If more than 2 conductor portions overlap in a section of the conductor, a plurality of turns can be produced simultaneously in one rotation of the winding.
A continuous turn-over (i.e., continuously wound) winding step can advantageously follow. In this case, electrically connecting the ends of mutually overlapping conductor portions to one another in a further step is preferred. This eliminates a subsequent step of cutting the conductors to length. As a result, the risk of damage to the already finished winding is reduced. Clean junctions are produced on the coil.
The present invention achieves the aforementioned object of providing a conductor for use in the method by using an electric conductor comprising a plurality of conductor portions, the conductor portions being joined to one another in a partially overlapping manner but insulated from one another. This provides a type of prefabricated conductor which can be processed particularly simply and quickly. The winding time for a coil can thus be reduced depending on the number of parallel conductor portions.
The respective conductor portions can comprise, in this case, a plurality of conductor cores connected in parallel. The conductor portions can also be constructed as transposed conductors. The conductor is therefore also suitable for applications in the energy field, for example for high-voltage transformers.
In a preferred embodiment of the present invention, in each case, two mutually overlapping ends of two conductor portions are constructed to be capable of being electrically connected to one another. The subsequent step of wiring-up the conductor when the coil is finished is particularly facilitated in this way. A subsequent step of adjusting the conductor or cutting the conductor to length is superfluous, or is at least simplified. The joints are thus precisely prescribed.
In a preferred embodiment of the present invention, the conductor portions are separated from one another with spacer inserts. This eliminates the heretofore customary expensive intermediate step of winding of spacer inserts or edge protector rings when winding the transformer. This is particularly true, for the internal region of a coil.
The winding arrangement of the present invention comprises an electric conductor including a plurality of conductor portions. The conductor portions are joined to one another such that they at least partially overlap one another but are insulated from one another. Such a winding arrangement is distinguished by its small boundary dimensions, since the coil can be wound in a substantially more compact manner than heretofore. Moreover, the winding arrangement of the present invention is simpler and quicker to produce.


REFERENCES:
patent: 2453552 (1948-11-01), Stearn
patent: 3221282 (1965-11-01), Brierley et al.
patent: 3246270 (1966-04-01), Stein
patent: 3252117 (1966-05-01), Fischer
patent: 3387243 (1968-06-01), Carpenter et al.
patent: 3528046 (1970-09-01), Sauer
patent: 3569883 (1971-03-01), Van Nice
patent: 3925743 (1975-12-01), Van Nice
patent: 4295071 (1981-10-01), Kaspar

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