JPS6342491Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flyback transformer used as a DC high voltage generator in television receivers and the like.

Conventionally, in this type of flyback transformer, as shown in FIG. 1, a transformer main body 3 is constructed by winding a low voltage coil and a high voltage coil (not shown) around a coil bobbin 2 placed on the leg of a core 1. Then, circuit components 4 such as diodes and capacitors constituting a rectifier circuit are placed on the top surface, one side surface, and the bottom surface of the transformer main body 3.
The upper surface part has a structure in which it is installed in the printed circuit board 5. 6 is a terminal pin implanted in the coil bobbin 2, and 7 is a high voltage lead wire for extracting high voltage, one end of which is connected to a conductive portion of the printed circuit board 5. Further, the printed circuit board 5 is provided with a hole through which the terminal pin 6 passes, and the printed circuit board is arranged on the upper surface of the transformer main body 3 so that the terminal pin 6 passes through the hole. The printed circuit board 5 is fixed to the upper surface of the transformer main body 3 by connecting the conductive portion of the transformer to the terminal pin 6 by soldering.

In such a conventional flyback transformer, when disposing the circuit components 4 on the side and bottom surfaces of the transformer body 3, it was necessary to do it manually, making assembly time-consuming and reducing productivity. It had become low.

The present invention solves these conventional drawbacks and aims to facilitate assembly and increase productivity.

In order to achieve this purpose, in this invention,
The circuit component is assembled into a flexible printed wiring board, and the flexible printed wiring board is bent and disposed on the outer surface of the transformer body along the outer surface. EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the present invention will be explained using the drawings of FIG. 2 and FIG. 3.

In the figure, 10 is a transformer main body, and this transformer main body 10 includes a core 11 as in the conventional case.
It is constructed by winding a low-voltage coil and a high-voltage coil around a coil bobbin 12 arranged on the leg of the motor. Further, a terminal pin 13 is implanted in the collar of the coil bobbin 12. Reference numeral 14 denotes a flexible printed wiring board on which conductive parts of a predetermined circuit pattern are formed, and on this flexible printed wiring board 14, circuit components 15 such as diodes and capacitors constituting a rectifier circuit are soldered to the conductive parts. It is connected and incorporated. Further, a high voltage lead wire 16 and a terminal pin 13 for extracting a high voltage are connected to the conductive portion of the flexible printed wiring board 14. Furthermore, this flexible printed wiring board 14 has the transformer main body 10
It is bent along the outer surface portions of the upper surface, one side surface, and the lower surface.

Although not shown, the transformer main body 10, in which the circuit components 15 incorporated in the flexible printed wiring board 14 are disposed on the outer surface, is housed in a case made of resin, etc. The finished product is filled with

As described above, according to the flyback transformer of the present invention, circuit components can be assembled into a flexible printed wiring board using an automated machine, and the flexible printed wiring board can be assembled with circuit components on the outer surface of the transformer body. All you need to do is place the board.
Assembly is extremely easy and productivity can be greatly improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional flyback transformer, Fig. 2 is a perspective view showing a flyback transformer according to an embodiment of the present invention, and Fig. 3 is a perspective view showing the structure of the main parts of the transformer. be. 10...Transformer body part, 12...Coil bobbin,
14...Flexible printed wiring board, 15...Circuit components.

Claims (1)

[Scope of utility model registration request] The transformer body has a high-voltage coil and a low-voltage coil wound around a coil bobbin, and circuit components such as diodes and capacitors that are connected to the transformer body and constitute a rectifier circuit, and the circuit components are connected to flexible printed wiring. Incorporated into the board,
A flyback transformer in which the flexible printed wiring board is bent and disposed on the outer surface of the transformer body along the outer surface.