JPH0563019U - Transformer coil - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify winding work in a transformer coil. [Structure] A bobbin 2 on an iron core 1 is wound with a single shared wire 4 in which insulated wires of a primary winding and a secondary winding are twisted together, and an outer peripheral insulator 3 is applied.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transformer coil.

[0002]

[Prior Art]

 In the conventional transformer coil, as shown in FIG. 4, the secondary winding 9 is wound around the bobbin 2 outside the iron core 1, and the primary winding 8 is wound via the inter-winding insulator 11 and then the outer circumference insulation is performed. The item 3 is applied. Alternatively, as shown in FIG. 5, in the case of a coil having multiple windings, an nth winding 10, a secondary winding 9, a primary winding 8 and an interwinding insulator 11 are inserted each time the winding is wound. ..

[0003]

[Problems to be solved by the device]

 In the conventional transformer coil, the primary winding and the secondary winding or the multiple winding must be divided and wound, and the leakage reactance between the windings becomes large. An object of the present invention is to provide a transformer coil in which winding work is easy and leakage reactance between windings is small.

[0004]

[Means for Solving the Problems]

 In the present invention, an electric wire in which a plurality of insulated electric wires are twisted together is used as an electric wire of a transformer coil, and after winding this into a coil, the end of the electric wire is divided into two parts, one of which is the primary end and the other is Secondary side terminal. When using multiple windings, divide the end of the wire into multiple terminals.

[0005]

[Action]

 With the configuration according to the present invention, it is possible to simultaneously wind the primary winding and the secondary winding or the multiple winding with a shared electric wire in which a plurality of insulated electric wires are twisted together. Also, since the interwinding distance of each of the primary, secondary, and multi-order windings is reduced, the leakage flux between the windings is reduced, and as a result, the leakage reactance is reduced.

[0006]

【Example】

 FIG. 1 shows one embodiment of the present invention, in which a bobbin 2 on the outside of an iron core 1 is wound with a shared electric wire 4 in which a plurality of insulated electric wires are twisted together to form a coil, and an outer peripheral insulator 3 is applied. In the case of a two-winding transformer coil, the end of the shared wire 4 is divided into a primary winding terminal 5 and a secondary winding terminal 6 as shown in FIG. Similarly, in the case of a multi-winding transformer coil, as shown in FIG. 3, the end of the shared wire 4 is divided into a primary winding terminal 5, a secondary winding terminal 6, and an n-th winding terminal 7.

[0007]

[Effect of the device]

 According to the present invention, the following effects can be obtained. (1) In the winding work of the transformer coil, since it is not necessary to separately wind the primary winding and the secondary winding or the multi-winding winding, the winding work is facilitated and the inter-winding insulator is used. It becomes unnecessary, and an inexpensive transformer coil can be provided. (2) Since the primary winding and the secondary winding or the multi-dimensional winding are shared by a single electric wire, the leakage magnetic flux is reduced and a transformer coil with a small leakage reactance can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a transformer coil of the present invention.

FIG. 2 is an enlarged view of an end portion of the electric wire.

FIG. 3 is an enlarged view of a wire end portion of another example of the transformer coil of the present invention.

FIG. 4 is a sectional view showing an example of a conventional transformer coil.

FIG. 5 is a sectional view showing another example of a conventional transformer coil.

[Explanation of symbols]

 1 iron core 2 bobbin 3 outer insulation 4 shared wire 5 primary winding terminal 6 secondary winding terminal 7 nth winding terminal 8 primary winding 9 secondary winding 10 nth winding 11 inter-winding insulation

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A transformer coil comprising a plurality of insulated wires twisted together to form a common wire, which is then wound into a coil. The ends of the common wire are divided into primary, secondary, and multi-dimensional windings.