Metal working – Method of mechanical manufacture – Electrical device making
Patent
1997-01-29
2000-03-21
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
219676, 26427219, H01F 4106
Patent
active
060387602
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to the field of fabrication of inductors and in particular fabrication of flat coils or windings of electric wires intended for the production of induction sources, for example utilized for the cooking of foodstuffs.
PRIOR ART
It is already known in the prior art to produce such flat windings by utilizing electric wires which are coated with a thermo-adhesive layer. When the winding is completed, an electric current passes through the electric wire in order to heat it and thus procure an adherence of each winding with, on the one hand, an adjacent winding and, on the other hand, with its support. The rigid assembly can then be easily handled without risk of undoing the successive windings. Such a maintenance operation precedes in general an encapsulating operation in which the assembly constituted notably by the winding is impregnated with a resin the purpose of which is to assure the final and homogeneous maintenance of the assembly. The use of such a technique is burdensome and costly because the electrically isolated electrical wire is coated with a supplementary thermo-adhesive layer after having been traversed by an electric current. All of these operations result in a fabrication process which is costly and complicated.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a fabrication process for windings of electrical wires or flat coils for the production of inductors permitting manipulation after the winding operation of, as well as an inductor, said windings with their support without risking undoing or harming the compactness of said windings.
Another object of the present invention is to utilize retention means which are inexpensive and whose utilization is extremely simple in order to assure a provisional retention of the windings on their support before an encapsulating operation, which is intended to assure a definitive retention.
The objects according to the present invention are achieved with the aid of a process for fabricating an inductor for induction sources consisting in winding on a support an electric conductor coated with an electrically isolating material and utilizing a resin to maintain the windings obtained in a compact form after an encapsulating operation, characterized in that it consists of: their support (5) before the baking operation.
The objects of the present invention are equally achieved with the aid of an inductor for an induction source comprising a support on which is wound a series of windings coated with an electrical insulation material characterized in that openings are arranged in the support opposite the windings to permit the passage of cementing means assuring the retention of the windings on the support.
BRIEF DESCRIPTION OF THE DRAWINGS
The characteristics and advantages of the invention will appear more clearly from a reading of the description given hereafter with reference to the attached drawings given by way of non-limiting examples in which:
FIG. 1 represents a partial view in cross-section of the winding and its support mounted on a winding device utilized in the process according to the invention;
FIG. 2 represents a front view of a support utilized in the process according to the invention;
FIG. 3 represents a mounting detail of the process according to the invention.
BEST MANNER OF CARRYING OUT THE INVENTION
The process according to the invention is performed with the aid of a lathe 1, furnished with a chuck 2, which are shown in FIG. 1. The chuck 2 presents an appropriate configuration to permit the mounting of a support 5 on which will be effectuated the windings 10 of wires that constitute an inductor. The support 5 is for example a disc having on its rear face and in its central part a flange 5a intended to be introduced into the chuck 2 and to serve as a base to support the first of the windings 10. The support 5 is supported by its flange 5a against the chuck 2 and thus creates a space 8 between said chuck 2 and the rear face of the support 5 in order to acc
REFERENCES:
patent: 4547962 (1985-10-01), deWalle et al.
patent: 4629843 (1986-12-01), Kato et al.
patent: 4770355 (1988-09-01), Mori et al.
patent: 4833774 (1989-05-01), Jacob-Grinschgl et al.
patent: 5197180 (1993-03-01), Mihalko
Patent Abstracts of Japan, vol. 018, No. 324 (E-1564) Jun. 20, 1994 & JP A 06 076931.
Patent Abstracts of Japan, vol. 004, No. 162 (E-033) Nov. 12, 1980 & JP A 55 110021.
Antoine Dominique
Hantz Dominique
Hall Carl E.
Seb S.A.
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