JPS5915095Y2 - Wiring board equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a circuit board device for mounting electrical components.

Conventionally, for example, electrical components that make up the leakage detection circuit of an earth leakage breaker are attached to a wiring board, and in order to prevent short circuits, damage, and condensation on these electrical components, the electrical components are housed in a case, and insulation is installed in the gap. It was filled with filling material.

However, such products have problems such as being troublesome and time-consuming to fill with the filler, and requiring a large amount of filler, which is uneconomical.

The present invention was devised based on the above circumstances, and its purpose is to provide a wiring board device that can be manufactured simply and in a short time, and that requires less filler.

The present invention will be explained below according to an embodiment applied to an earth leakage breaker shown in the drawings.

In the figure, 1 is a base, and on this base 1 are provided a wiring board device 2 housing electrical components constituting an earth leakage detection circuit, an opening/closing mechanism 3, a drive mechanism 4, a tripping mechanism 5, etc. .

Note that 6 is an operating handle and 7 is a cover.

The wiring board device 2 has a case 8 made of an electrically insulating material such as synthetic resin, and has a box-like shape with an open top surface.

A stepped portion 10 is formed at the inner edge of the opening 9 over the entire circumference.

Further, 11 is a wiring board such as a printed circuit board.

Electrical components 12 . . . are attached to one surface of the wiring board 11 with solder 13 .

And this wiring board 11 and electrical components 12...
are immersed in an insulating filler 14, for example, an epoxy resin paint, so that their surfaces are coated with a film of the insulating filler 14 made of the above-mentioned epoxy resin or the like.

The wiring board 11 is fitted into the opening 9 of the case 8 so as to close the opening 9 of the case 8, with the electrical component 12 bonded to one surface facing inside.

The peripheral edge of this wiring board 11 is connected to the step 1 of the case 8.
0 and is integrally bonded to the case 8 by a filler 11 that is the same as the insulating filler 14 described above.

The electrical components 12 in the case 8 have a part of the insulating filler 14 adhered to the outer surface of the electrical components 12 in the case 8.
It is fixed to the case 8 by adhering it to the inner surface of the case 8.

In order to manufacture such a product, the wiring board 11 and the electrical components 12 are dipped in the insulating filler 14 and pulled up, and the wiring board is prepared while the filler 14 is still wet. 11 is fitted into the opening 9 of the case 8, an undried filler 14 is interposed between the insulation of the wiring board 11 and the edge of the opening of the case 8, and this is dried to form a bond.

One embodiment of the present invention configured as described above has an insulating filler 1 on the surfaces of the wiring board 11 and the electrical components 12.
4 is coated, so insulation defects due to dew condensation will not occur.

Further, the electrical components 12... are housed in a case 8, and a filler 14 is adhered to the case 8 in a film form.
Since it is directly bonded to the board, it does not move within the case 8, and since the opening 9 of the case 8 is closed by the wiring board 11, entry of foreign matter and damage are prevented.

And inside the case 8, the electrical components 12...
and the case 8 are bonded together by the filler 14 applied in a film form to the electrical components 12.
Since the filler 14 is no longer interposed in the area other than the bonded area and a gap is formed, the amount of the filler 14 used can be reduced.

Furthermore, in order to manufacture this, a wiring board 11 and an electric component 1 are required.
2... in the insulating filler 14, pull it up, and fit it into the opening 9 of the case 8.
It can be manufactured extremely easily and in a short time, and since there is no need to fill the case 8 with the insulating filler 14, only a small amount of the filler 14 is required.

Note that the present invention is not limited to the above embodiment.

For example, the stepped portion at the edge of the case opening may not necessarily be provided.

Furthermore, the present invention is not limited to the one used in the earth leakage detection circuit of the earth leakage breaker as in the above-mentioned embodiment, but can also be used to house a wiring board device on which electrical components constituting various other circuits are mounted in a case. Of course, it can be applied when

As described above, the present invention includes a case having an opening, a wiring board that closes the opening, an electrical component mounted on the wiring board and housed in the case, and a film-like coating on the outer surface of the electrical component. and an insulating filler which is adhered to the case and a part of which is interposed between the case and the electrical component to fix the electrical component to the case.

Therefore, according to this article, electrical parts are protected from short circuits and dew condensation by the film-like insulating filler applied to them, and are also protected by the case and prevented from being damaged. In addition, since the electrical components and the case are fixed together with the insulating filler inside the case, problems such as the electrical components moving within the case are prevented, and damage to the electrical components is also prevented. Ru.

Moreover, since the electrical components and the case are fixed together by the film-like insulating filler that adheres to the electrical components, a void is formed within the case where no filler exists, which reduces the amount of filler used. .

Since this product can be obtained by simply dipping the wiring board and electrical components into an insulating filler, pulling it up, and fitting it into the case opening, it is easy to manufacture and takes a short time. The above effect is significant.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is an overall cross-sectional view, FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1, and FIG. 3 is an exploded perspective view of a wiring board device. Figure 4 is the IV of Figure 3.
It is a sectional view along the -IV line. 8...Case, 9...Opening, 11...
...Wiring board, 12...Electrical parts, 14...
...Insulating filler.

Claims (1)

[Scope of utility model registration request] A case having an opening surface, a wiring board that closes the opening surface, an electrical component mounted on the wiring board and housed in the case, and a film attached to the outer surface of the electrical component. A wiring board device, characterized in that a portion thereof includes an insulating filler interposed between the case and the electrical component and fixing the electrical component to the case.