JPS62239505A - Transformer - Google Patents

Abstract

PURPOSE:To form the transformer of excellent quality which can be assembled easily by a method wherein an insulating plate and the conductive plate, with which the insulating plate will be pinched from both sides, are inserted into the hole of a magnetic core. CONSTITUTION: The title transformer is formed by inserting an insulating plate 2 into the hole of a magnetic core 1 in such a manner that the insulating plate 2 will be pinched from both sides with conductive plates 3 and 4, they are inserted into the holes 6 and 7 of the main body of a printed substrate 5, and they are electrically wired by performing soldering connections 11 and 12 using conductive patterns 8, 9 and 10. When a high frequency signal is applied to the conductive pattern 8, an electromagnetic induction coupling is generated on the solder-connected conductive plates 3 and 4, and the high frequency signal is divided and outputted to the conductive patterns 9 and 10. On the other hand, when the high frequency signal is applied to the conductive patterns 9 and 10, a back coupling is generated on the conductive patters 9 to 10 and the conductive patterns 10 to 9, because the conductive plates 3 and 4 are electrically wired in opposite phase, and the high frequency signal is attenuated substantially.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a transformer that distributes and combines high frequency signals over a wide band in an electric circuit.

(Prior Art) Conventionally, this type of transformer has had a configuration as shown in FIG. FIG. 8 is an equivalent circuit diagram thereof.

In FIG. 7, two conductive wires 21 and 22 (hereinafter referred to as conductive wires) with insulation coating are inserted into two holes of the magnetic core 23, one end of the conductive wire 21 is connected to a terminal 24, and one end of the conductive wire 22 is connected to a terminal 25. , connect the connecting parts of the conductors 21 and 22 to the intermediate tap terminal 26
As such, the insulating coating is removed from the tips of the terminals 24 and 25, and the conductive wires 21 and 22 are wired in opposite phases.

When a high frequency signal is applied to the intermediate tap terminal 26, the high frequency signal is distributed to the terminals 24 and 25 and outputted by electromagnetic inductive coupling. - When a high frequency signal is applied to the right terminal 24 or the terminal 25, anti-coupling occurs from the terminal 24 to the terminal 25 and from the terminal 25 to the terminal 24, and the high frequency signal has a characteristic of being greatly attenuated.

(Problems to be Solved by the Invention) In the above configuration, during assembly, it is difficult to insert and hold the core wire into the hole of the magnetic core, twist the center tap terminal, and remove the insulation coating by soldering each terminal. In addition, the insulating coating of the conductive wires peels off at the edges of the holes in the magnetic core, resulting in short circuits between the conductive wires.

The purpose of the present invention is to eliminate the drawbacks of the prior art, and to improve the ease of assembly.
The objective is to provide a transformer with excellent quality and characteristics.

(Means for Solving the Problems) The transformer of the present invention includes an insulating plate and conductive plates sandwiching the insulating plate from both sides into a hole of a magnetic core.

(Function) The above configuration eliminates the need for wiring using conductive wires as in conventional examples, and allows for easy assembly with the magnetic core, insulating plate, and conductive plate, and electrical wiring using the conductive pattern on the main body printed circuit board that is pre-attached. By doing so, a transformer can be formed.

(Example) An example of the present invention will be described based on FIGS. 1 to 6.

FIG. 1 is an assembled view of the transformer of the present invention, and FIG. 2 is a sectional view thereof. 3 to 6 are configuration diagrams of the same parts.

In FIG. 1, 1 is a magnetic core, and the magnetic core 1
The insulating plate 2 is sandwiched between the conductor plates 3 and 4 from both sides into the hole, and the insulating plate 2 is inserted into the holes 6 and 7 of the main body printed circuit board 5, and the conductor patterns 8 and 9°10 are formed as shown in Fig. 2. Electrical wiring is provided by soldered connections 11, 12 to form a transformer.

3 is a perspective view of the magnetic core 1, FIG. 4 is a perspective view of the insulating plate 2 sandwiched between conductor plates 3 and 4 from both sides, and FIG. 5 is a perspective view of the hole 6 of the printed circuit board 5. .

The operation of the transformer configured as above will be explained.

When a high frequency signal is applied to the conductor pattern 8, electromagnetic inductive coupling occurs between the conductor plates 3 and 4 which are connected by soldering, and the high frequency signal is distributed to each conductor pattern 9°lO and output. On the other hand, when a high frequency signal is applied to the conductor pattern 9 or 10, anti-coupling occurs from the conductor pattern 9 to the IO1 conductor patterns 10 to 9 because the conductor plates 3゜4 are electrically wired in opposite phases, and the high frequency signal is The signal has a characteristic of being greatly attenuated.

As described above, according to this embodiment, the transformer has the same transformer characteristics as the conventional example, and is easy to assemble and has excellent quality without the need for winding conductors or removing insulation coatings. can be formed.

In this embodiment, two conductor plates are used, but by using one or three conductor plates, it is possible to form a transformer according to the purpose.

(Effect of the invention) According to the invention, by winding of a conventional conductor.

Since the formed structure can be formed by simply inserting an insulating plate and a conductive plate, it is extremely easy to manufacture, and automatic assembly is also possible, which has great practical effects.

[Brief explanation of drawings]

FIG. 1 is an assembled perspective view of a transformer according to an embodiment of the present invention;
Fig. 2 is a sectional view of the same, Fig. 3 is a perspective view of the magnetic core, and Fig. 4 is a sectional view of the same.
Figure 5 is a perspective view of the insulating plate and conductor plate, Figure 5 is a perspective view of the printed circuit board, Figure 6 is an assembled perspective view of the magnetic core, insulating plate, and conductor plate, and Figure 7 is a perspective view of a conventional transformer. 8 are equivalent circuit diagrams. DESCRIPTION OF SYMBOLS 1... Magnetic material, 2... Insulating board, 3, 4... Conductor board, 5... Printed circuit board, 6, 7... Hole. 8.9.10... Conductor pattern, 11.12...
Soldered connection. Patent Applicant: Matsushita Electric Industrial Co., Ltd. Bunmini 7 Figure 1 Figure 2 11.12--Ichimuta Immunization Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A transformer characterized by inserting an insulating plate and conductive plates sandwiching the insulating plate from both sides into a hole in a magnetic core.