JPS5943692Y2 - high frequency transformer - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a high frequency transformer.

An example of a conventional high frequency transformer 1 is shown in FIG.

In FIG. 1, a conventional high frequency transformer 1 includes two cores 2, 3, two substrates 4, 5, two vibros, 7, windings 8, and the like.

A vibro 1 is fitted into each of the cores 2 and 3, and the ends of these vibros 1 are attached to a substrate by a soldering or caulking process (in this example, a soldering). 4.5 is fixedly attached.

That is, one end of the vibro 1 is fixed to an oval conductive part provided on the board 4 by soldering or caulking, and is in a conductive state, and the other end of the vibro 1 is connected to the board 4. They are each fixed to conductive portions 12 and 11 provided in 5 by soldering or caulking.

In addition, these vibro. A winding 8 is wound so as to pass through the wire 7.

The ends of the winding 8 are attached to the conductive foils 9, 10 of the substrate 4 by soldering.

In this case, the path of conductive foil 11 - pipe I - conductive part of substrate 4 - pipe 6 - conductive foil 12 and the winding 8 are arranged so that they become the primary winding and the secondary winding (or vice versa). used.

Therefore, the conductive portions 11, 12 and the conductive portions 9, 10, etc. serve as primary and secondary side terminals, respectively.

By the way, as mentioned above, in order to attach the vibro 1 to the board 4.5, soldering work or caulking work is required, making the work complicated.

Well,. It is necessary to perform soldering to connect the ends of the windings 8 to the conductive foils 9, 10 of the substrate 4, which makes the work complicated.

Furthermore, since the conductive foils 9.10.11.12 of the substrates 4 and 5 are partially used as mounting terminals, it is necessary to make the conductive foils 9.10.11.12 of the substrates 4 and 5 thicker. be.

Therefore, since special substrates are used as the substrates 4 and 5, the cost increases.

This invention was made in consideration of such circumstances, and aims to provide a high-frequency transformer that is easy to manufacture, has a small number of parts, and has high image quality.

An embodiment of this invention will be described below.

FIG. 2 shows an embodiment of the high frequency transformer 20, and FIG. 3 shows the cores 21, 22 of this high frequency transformer 20.
and a conductive member 23.

In FIG. 2, this high frequency transformer 20 is composed of two cores 21 and 22, a conductive member 23 (see FIG. 3), and a winding 24.

As shown in FIG. 3, the conductive member 23 includes two attachment parts 25, 26, three terminal parts 27, 28.degree. 29, and a connecting part 30.

This conductive member 23 is made of copper, and is punched and then bent to form a square shape.

The cores 21,22 are well-known special ferrite cores with low loss and high magnetic permeability, and are cylindrical in shape.

The terminal portions 27.28 of the conductive member 23 are inserted into the through holes 31.32 of the cores 21.22 as shown by the arrows in FIG.
Pass through the terminal section 25 and mounting section 25 and 26, and then pass through the terminal section 27.
．． 28 as shown by the dashed line in FIG.

Thus, core 21. 22 can be fixed in parallel.

The winding 24 is made of a covered wire, and is wound so as to pass through each cavity of the mounting portion 25, 26 of the conductive member 23.

By bending the winding 240 and the conductive member 23, the core 21.22 the conductive member 23 button and the winding 24 are bent.
are fixed together.

The conductive member 23 and the winding 24 are used as a primary winding and a secondary winding (or vice versa).

In this manner, in the high frequency transformer 20 of this embodiment, the mounting portions 25 and 26 and the terminal portions 27 and 28 are integrally configured as the conductive member 23.

Therefore, as in the past (see Figure 1), vibro,
There is no need to connect γ and the substrates 4, 5 by caulking, soldering, etc., and the outer substrates 4, 5 themselves are also unnecessary.

The ends of the windings 24 are directly connected to a mounting printed circuit board (not shown) or the like.

Therefore, there is no need to connect the ends of the winding 24 to the conductive foils 9, 10 of the substrate 4, as in the conventional case.

In this embodiment, the idle terminal section 29 can provide mechanical strength, so there is no problem in directly connecting the end of the winding 24 to a printed circuit board or the like.

Furthermore, this embodiment does not require a substrate.

As described above with respect to one embodiment, according to the present invention, it is possible to realize a high frequency transformer that is easy to manufacture and has a small number of parts, and therefore can reduce costs.

[Brief explanation of the drawing]

Figures 1A, B, C, and D show a conventional high-frequency transformer; a partially sectional plan view, a front view, a left surface view, a right side view, and Figures 2A, B, Ci-, and Figure 3 shows an embodiment of this invention; Figures 2A, B, and C are a front view, a left side view, and a right side view, and Figure 3 is a perspective view showing an assembled state. It is. 21.22... Core, 23... Conductive member, 24... Winding wire, 25.26...
Mounting part, 27.28...Terminal part, 31.32.
...Through hole.

Claims (1)

[Scope of utility model registration request] 1. A core portion is provided with a pair of through holes arranged in parallel around which the first winding is wound, and two
A book mounting part and a connecting part that commonly connects one end of the book mounting part are integrally formed to form a second winding, and each other end of the mounting part is bendable. High frequency transformer. 2. The high frequency transformer according to claim 1, wherein each of the mounting portions is formed of a pipe, and the first winding is wound in a hole of each pipe.