JPH01308015A - Annular core coil and manufacture thereof - Google Patents

Abstract

PURPOSE:To reduce to the minimum the handworks to be conducted in a coil- forming process by a method wherein a conductor is wound around the circumference of a cylindrical member surrounding a part of an annular core. CONSTITUTION:A cylindrical member 2 is loosely wound on a part of an annular core 1, a coil is formed by winding a conductor 3 on the outer circumference of the cylindrical member 2, or the cores 13 split from both ends of the cylindrical member 11, provided with the coil, are inserted and coupled. As the manufacture of an annular core coil, for which reduction in cost was difficult before due to having many parts depending upon handworks, especially a small type annular core coil, can be automated, the above-mentioned construction is effective for reduction in cost and making uniform the characteristics of the title annular core coil.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a toroidal coil f> Nyoji Shizu → = electric annular core coil structure and its structure. Regarding the manufacturing method.

(Prior art) Annular core coils such as toroidal coils have been widely used in various types of transformers, current sensors, etc., but the core is in the form of a closed loop or a semi-closed loop with a slit in part. Therefore, it is difficult to wind the conductor around the outer circumference of the core to form a coil, and although various efforts have been made, as the core becomes smaller, it is difficult to form a coil. The drawback was that it was extremely difficult to reduce manufacturing costs.

(Objective of the Invention) The present invention was made in order to eliminate the defects of the conventional annular core coil as described above, and to minimize the manual labor in the coil forming process, thereby significantly reducing the manufacturing cost ( An object of the present invention is to provide an annular core coil that can be reduced by 1 (h) and a method for manufacturing the same.

(Summary of the Invention) In order to achieve the above-mentioned objects, the annular fur coil according to the present invention loosely wraps a cylindrical body around a part of the annular core, rotates the cylindrical body, and winds a conducting wire around the outer periphery of the cylindrical body. The method of forming a coil by turning the coil is to insert and couple cores separated from both ends of a cylindrical body in which a coil has been previously formed.

(Examples) The present invention will be described in detail below based on the embodiments shown in the drawings.

FIG. 1 (al to (clti) is an embodiment showing the basic structure of the annular core coil according to the present invention, in which at least one side of a rectangular closed root core l has a circular cross section. Loosely wrap two cylindrical bodies around the outer circumference of the cylindrical body, and wrap the conductive wire 3 around the outer circumference by the required number of turns (b).

In the same figure, (b) is a triangular core 4 with a cylindrical body 2 attached to it. The cylindrical body 6 is made rotatable around the toroidal core 5.

A method for forming a coil having the above-described structure may be, for example, as shown in FIGS. 2(d) to 2(d). - That is, a cylindrical body 2 having the required moxibustion strength and having 7 holes/sifs at both ends and split along the axial direction is mounted on a core 8 having a circular cross section (second (kl (see al)). ), then tighten it loosely with a suitable tightening jig 9 ([hl 1 (see b1)), and then rotate it using the cylindrical body rotation jig 10 via the crankshaft of the cylindrical body 2. It is sufficient to wind the connecting wire 3 (see (c) or (dl) in the figure).

At this time, if slits are cut radially in the crankshaft, there will be no problem in forming the cylindrical body, and when the conducting wire 3 is wound around the outer periphery of the cylindrical body 2, the flange 7 prevents the coil from deforming. It is effective on

It goes without saying that the flange of the cylindrical body is not necessarily essential and may be a simple cylindrical body. Third
1 Bacteria [a) and lb) are exploded views showing other embodiments of the present invention, in which a coil is formed in a cylindrical body 11 in advance, and a divided core 12 or 13 is inserted into the cylindrical body 11. It may be inserted into the body 11 and bonded with a suitable adhesive.

In this way, the cross-sectional shape of the inner surface formed on the outside of the cylindrical body 11 does not need to be limited to a circle, and therefore, the cross-sectional shape of the core 12 or #i13 can also be made to match the inner cross-sectional shape of the cylindrical body 11. Well, the formation of the coil would be quite easy.

(Effects of the Invention) The annular core number coil according to the present invention is made up of <'R4 as explained above, so conventionally it has relied on a certain company, and the cost was 0\, and it was extremely difficult to reduce the cost. Annular core coil, especially small crosspiece 1. Since the production of the annular core e-coil is greatly reduced to 17, it has a remarkable effect on reducing the cost U (U) and making the characteristics uniform.

[Brief explanation of the drawing]

No. 1(a) to 1c) rJ Annular colloid according to the present invention
Configuration 1zo1 showing the basic internal structure bk of the γ coil. au) 2(
Acids 1.1 (a) to (d) 1 showing other manufacturing processes.
3rd do 1(a) and (bl are diagrams showing other embodiments of the present invention.!, 4, 5.8.12 and 13...... annular core. 2. 6.7 and 11...Tubular body. 3...Conductor. Characteristics Applicant: Toyo Tsui Δki Co., Ltd. (α) (b) Figure 3

Claims (3)

[Claims] (1) An annular core coil in which a conducting wire is wound around the outer periphery of a cylindrical body surrounding a part of an annular core. (2) A method for manufacturing an annular core coil, which comprises forming an annular core by inserting and coupling divided cores to both ends of a cylindrical body around which a conducting wire is wound. (3) An annular core characterized in that a member split along the axial direction is loosely wound around an annular core to form a cylindrical body, which is rotated as a bobbin, and a conductor is wound around the outer circumference to form a coil. - Coil manufacturing method.