JPH04296005A - Lead wire connecting structure for winding - Google Patents

Abstract

PURPOSE:To contrive accomplishment of both improvement in workability and simplification of connecting work in which the lead wires 1a1 and 1b1 of a plurality of flat wires 1a and 1b are connected with each other. CONSTITUTION:For example, two planar coils 11a and 11b are opposingly arranged concentrically, and a magnetic body 12 is closely interposed between the two coils 11a and 11b. A notch 13, into which the lead-out wires 11a1 and 11b1 of both planar coils 11a and 11b will be press-insered, are provided on the magnetic body 12.

Description

[Detailed description of the invention]

[Object of the invention]

0002

[Industrial Application Field] The present invention is applicable to power supplies, inverters,
This relates to a winding lead wire connection structure suitable for use in inductance elements such as transmitters, and in particular, a winding lead wire connection structure that easily and reliably connects the lead wires of a plurality of small and thin windings. Regarding.

0003

2. Description of the Related Art In recent years, planar coils have been proposed in response to demands for smaller and thinner windings for inductance elements, transformers, and the like.

[0004] These devices include inductance elements and sliced coils in which a conductor is printed in a coiled or spiral shape on a printed circuit board.

[0005] A sliced coil is first made by overlapping an insulating sheet on a conductive thin strip having a desired width, then winding this in a spiral to form a spiral cylinder, and then rotating this spiral cylinder in the axial direction. It is constructed by slicing it to the required length.

FIG. 4 shows a plan view of an example of such a planar coil 1, which is a coated conductive wire 2 coated with an electrically insulating film and spirally wound on one plane.

Furthermore, this planar coil 1 has conventionally been assembled into a planar inductance element 3 as shown in FIGS. 5 and 6.

In other words, the conventional planar inductance element 3 of this type has a pair of upper and lower planar coils 1a and 1b arranged concentrically and facing each other, and a magnetic material 4 made of an amorphous alloy or the like is placed between them 1a and 1b. It is closely mediated.

[0009]

However, in such conventional planar coils 1a and 1b, as shown in FIGS. 5 and 6, these lead wires 1a1 and 1b1 are once placed outside the ends of the magnetic body 3. After being pulled out, the insulating film of the covered conductor wire 2 is partially peeled off to expose the conductor wire, and the exposed portions are brought together and soldered to make an electrical connection.

For this purpose, when connecting the two lead wires 1a1 and 1b1 of both the planar coils 1a and 1b, the work of drawing these lead wires 1a1 and 1b1 outward from the planar coils 1a and 1b, respectively, Both leader lines 1a1
, 1b1, it is necessary to peel off part of the insulation coating to expose the conductor, to bring these two exposed parts together, and to solder this brought together part, and these works are not necessarily easy. Moreover, since the number of operations is not small, there is a problem that the connection operation efficiency is not good.

[0011]The present invention has been made in consideration of these circumstances, and its purpose is to simplify the work of connecting the lead wires of a plurality of windings and to improve the workability. The purpose of the present invention is to provide a winding leader wire connection structure that can be used. [Structure of the invention]

0012

[Means for Solving the Problems] In order to solve the above problems, the present invention is constructed as follows.

That is, in the present invention, a magnetic body is interposed between a plurality of windings arranged to face each other, a notch is made at the end of the magnetic body, and each lead wire of the plurality of windings is inserted into the notch. A feature of the present invention is that these lead wires are electrically connected to each other by press-fitting them.

[0014]

[Operation] The lead wires drawn out from, for example, two winding wires arranged opposite to each other are press-fitted into the notches of the magnetic material.

[0015] Then, both lead wires are sandwiched by the notches and fixed on the magnetic body, and are electrically connected to each other via the notches in the magnetic body.

In other words, according to the present invention, the lead wires of both windings can be electrically connected to each other very quickly and easily by the simple operation of press-fitting each lead wire into the notch of the magnetic material. , it is possible to simplify the work of connecting both lead wires, and also to improve the workability.

[0017]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings.

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a front view of FIG. A rectangular thin plate-like magnetic material 12 made of amorphous alloy or the like is closely interposed between the two 11a and 11b.

Both planar coils 11a and 11b are as follows:
Leading lines 11a1 and 11b1 are drawn outward from each of them.

[0020] The magnetic body 12 has a notch 13 of a predetermined length at one corner thereof, and this notch 13 forms a V-shaped groove 13a that is concave inward in a V-shape at the entrance end thereof. At the same time, notches 13 are formed on both the front and back sides of the magnetic body 12.
An X-shaped groove 13b is formed which opens in a V-shape in both the front and back directions about the central axis of the groove.

Therefore, both planar coils 11a, 11
When both the lead wires 11a1 and 11b1 of b are press-fitted into the cut 13 from the entrance end of the V-shaped groove 13a,
Both lead lines 11a1 and 11b1 of this press-fitted part
Since each insulating coating is cut out by the tip of the X-shaped groove 13b and the conductive wire inside is exposed,
a1 and 11b1 are electrically connected to each other through the notch 13 and are held together at the same time.

For this purpose, both planar coils 11a, 11
Both leader lines 11a1 and 11b1 of b are cut 13
The two lead wires 11a1 and 11b1 can be electrically connected to each other by a simple operation of simply press-fitting them inside, thereby simplifying the connection operation and improving workability.

[0023] Furthermore, a V-shaped groove 1 is provided at the entrance end of the cut 13.
3a is formed, both leader lines 11a1, 11
b1 can be easily press-fitted into the notch 13 by hooking it on this V-shaped groove 13a.

Furthermore, since the X-shaped groove 13b is formed on both the front and back sides of the peripheral part of the cut 13, and the wall thickness of the peripheral part is made thinner, the cut 13 of the leader lines 11a1 and 11b1 is made thinner.
Press-fitting into the wire becomes easier and smoother, and it is therefore possible to prevent the lead wires 11a1 and 11b1 from being broken due to excessive external force being applied during press-fitting.

[0025]

[Effects of the Invention] As explained above, in the present invention, each of the lead wires of a plurality of windings can be electrically connected to each other by press-fitting the lead wires into the notches of the magnetic material. It is possible to both simplify the connection work and improve workability.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the first invention of the present application.

FIG. 2 is a front view of FIG. 1.

FIG. 3 is an enlarged view of part III in FIG. 1.

FIG. 4 is a plan view of an example of a planar coil.

FIG. 5 is a front view of the planar inductance configured by the planar coil shown in FIG. 4.

FIG. 6 is a plan view of FIG. 5;

[Explanation of symbols]

11a, 11b A pair of planar coils 11a1, 1
1b1 Pair of leader wires 12 Magnetic body 13 Notch 13a V-shaped bevel

Claims (1)

[Claims] Claim 1: A magnetic body is interposed between a plurality of windings arranged to face each other, a notch is made at the end of the magnetic body, and each lead wire of the plurality of windings is press-fitted into the notch. A winding leader wire connection structure characterized in that these leader wires are electrically connected to each other.