JPH10242613A - Composite part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the insulation both between terminal pins with a high voltage applied across them and between the terminal pin and any wiring pattern, by making the diameter of the through hole for inserting thereinto the predetermined terminal of an insulating transformer larger than the diameters of the insertion holes for inserting thereinto the terminals of the electronic parts of a boards, and by so cutting the predetermined terminal as not to protrude from it through hole, and further by insulating it from the circuits of the board. SOLUTION: Mounting on an insulating board 13 such electronic parts 12 as an insulating transformer 11 and a coil, there are provided in the insulating board 13 both insertion holes 14 for inserting thereinto the terminal pins of the electronic parts 12 wherefrom the predetermined terminal pins of the insulating transformer 11 are excluded and through holes 17 for inserting thereinto the predetermined terminal pins of the insulating transformer 11 to make the diameters of the through holes 17 larger than the ones of the insertion holes 14. Then, when a high voltage is applied across the terminal pins 11A, 11D of the insulating transformer 11 and the terminal pin 11A becomes the pin of high-voltage side, the terminal pin 11D of low-voltage side is so cut that its length is smaller than the thickness of the insulating board 13, and it is insulated from circuits.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a composite component in which an electronic component including an insulating transformer is mounted on a substrate.

[0002]

2. Description of the Related Art FIG. 5 is a top view of a conventional composite part, FIG. 6 is a partial cross-sectional view of FIG. 5, and FIG. 7 is a bottom view of the conventional composite part during manufacture. A conventional composite component includes an insulating transformer 51 having a plurality of terminal pins, an electronic component 52 such as a coil having a plurality of terminal pins, and an insulating substrate 53 on which the insulating transformer 51 and the electronic component 52 such as a coil are mounted. Some have been provided. The insulating substrate 53 has a plurality of insertion holes 54 formed therein.
B (only a part is shown) is formed. Round pattern 5
5A is formed so as to surround the insertion hole 54,
A predetermined round pattern is connected by the wiring pattern 55B. Note that only a part of the wiring pattern 55B in FIG. 7 is shown. Then, the insulating substrate 53
An electronic component 5 such as an insulating transformer 51 and a coil
2 is implemented. The insulating transformer 51 includes six terminal pins 51A, 51B, 51C, 51D, 51E, and 51F. The six terminal pins are inserted into predetermined insertion holes 54 of the insulating substrate 53, respectively. Are respectively connected to the round pattern 55A by soldering. The electronic component 52 such as a coil includes four terminal pins 52A, 52B, 52C, and 52D.
The terminal pins are inserted into predetermined insertion holes 54 of the insulating substrate 53, and the portions projecting from the back surface of the insulating substrate 53 are connected to the round patterns 55A by soldering.

[0003]

In such a composite component, an insulating transformer 51 to which a high voltage is applied or a high voltage may be applied is mounted on an insulating substrate 53. Therefore, when a high voltage is applied to the insulating transformer 51 or when a high voltage is applied, a high voltage is applied between terminal pins (for example, between the terminal pins 51A and 51D) to which a high voltage is applied on the back surface of the insulating substrate 53. Between the terminal pin and the wiring pattern (for example, the terminal 51F and the wiring pattern 55)
B) has a problem that dielectric breakdown occurs due to discharge or the like. In addition, when the insulating transformer 51 to which a high voltage is applied or a high voltage is likely to be applied and another electronic component are mounted adjacent to each other, the discharge occurs between the insulating transformer 51 and the other electronic component as described above. And the like, and there is a problem of dielectric breakdown. In order to solve such a problem, it is conceivable to improve the withstand voltage characteristics by increasing the distance between the terminal pins to which a high voltage is applied or the distance between the terminal pins and the wiring pattern. However, this type of composite component is desired to be miniaturized, and electronic components mounted on this composite component are being miniaturized. Therefore, between a terminal pin to which a high voltage is applied, and between a terminal pin and a wiring pattern. Is not enough distance. Also,
In order to solve the above-described problem, an insulating coating is applied to the back surface of the insulating substrate, particularly, between terminal pins to which a high voltage is applied, or between the terminal pin and the wiring pattern, but the insulating coating tends to have unevenness. Therefore, a sufficient effect could not be obtained.

According to the present invention, a high voltage is applied between terminal pins,
It is an object of the present invention to provide a composite component capable of improving insulation between a terminal pin and a wiring pattern and improving dielectric strength characteristics.

[0005]

According to the present invention, there is provided a composite component having an electronic component including an insulating transformer mounted on a substrate.
The board is provided with an insertion hole for inserting the terminal of the electronic component and a through hole larger than the insertion hole, and the insulating transformer is cut so that a predetermined terminal does not protrude from the through hole and is insulated from the circuit. is there.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A composite component according to the present invention has an insertion hole for inserting a terminal of an electronic component on a substrate on which an electronic component including an insulation transformer is mounted, and a predetermined size of the insulation transformer formed to be larger than the insertion hole. A through hole into which the terminal is inserted is provided. The insulating transformer is cut shorter than the substrate thickness so that predetermined terminals do not protrude from the through holes of the substrate. Therefore,
A predetermined terminal of the insulating transformer is insulated from the substrate, and a gap serving as an insulating layer or an insulating layer formed by the injected insulating material is formed, so that an insulation resistance value between the predetermined terminal of the insulating transformer and the substrate increases. .

[0007]

FIG. 1 shows an embodiment of a composite part according to the present invention.
This will be described with reference to FIGS. FIG. 1 is a side view of a first embodiment of a composite component according to the present invention, FIG. 2 is a partial cross-sectional view of FIG. 1, and FIG. 3 is a bottom view in a state where terminal pins of the electronic component are inserted into a substrate. 1 to 3, reference numeral 11 denotes an insulating transformer,
12 is an electronic component such as a coil, and 13 is an insulating substrate. The insulating transformer 11 has six terminal pins 11A, 11B, 1
1C, 11D, 11E and 11F. Also, the electronic component 12 such as a coil has four terminal pins 12A, 12B,
12C and 12D are provided. The insulating transformer 11 and the electronic component 12 such as a coil are mounted on an insulating substrate 13. The insulating substrate 13 has an insertion hole 14 into which a terminal pin excluding a predetermined one of the insulating transformer 11 and a terminal pin of an electronic component 12 such as a coil, and a through hole into which a predetermined terminal pin of the insulating transformer 11 is inserted. 17 are provided. The through hole 17
It is formed larger than the insertion hole 14. On the back surface of the insulating substrate 13, a round pattern 15A and a wiring pattern 15B are provided.
Is formed. The round pattern 15A has the insertion hole 14
Is formed to surround the periphery of the wiring pattern 15B.
A predetermined round pattern is connected. In the insulating transformer 11, of the terminal pins to which a high voltage is applied, one of the terminal pins on the high potential side or the low potential side is cut shorter than the thickness of the insulating substrate 13. For example, when a high voltage is applied between the terminal pins 11A and 11D, the terminal pin 1
When 1A is on the high potential side, the terminal pin 11 on the low potential side
D is cut shorter than the thickness of the insulating substrate 13. Also, the terminal pins 11F of the insulating transformer 11 and the wiring patterns 15B
When a high voltage is applied therebetween, the terminal pin 11F is cut shorter than the thickness of the insulating substrate 13. This insulating transformer 11
The terminal pins 11A, 11B, 11C, and 11E are inserted into the insertion holes 14, respectively, and the terminal pins 11D and 11F are inserted so as to be located substantially at the centers of the through holes 17, respectively. Then, the terminal pins 11A, 11
In B, 11C, and 11E, portions protruding from the back surface of the insulating substrate 13 are connected to the round pattern 15A with solder. The terminal pins 11D and 11F are insulated from the insulating substrate and are not fixed. In the electronic component 12 such as a coil, the terminal pins 12A, 12B, 12C, and 12D are respectively inserted into the insertion holes 14, and portions protruding from the back surface of the insulating substrate 13 are connected to the round pattern 15A by solder.

FIG. 4 is a partial sectional view of a composite component according to a second embodiment of the present invention. The insulating substrate 43 includes an insulating transformer 4
Electronic components 4 such as terminal pins and coils other than those specified in 1.
An insertion hole 44 into which the second terminal pin is inserted, and a through hole 47 formed to be larger than the insertion hole 44 to insert a predetermined terminal pin of the insulating transformer 41 are provided, and a round pattern and a wiring pattern are formed on the back surface. Is done. Insulation transformer 4
1 is cut so that the terminal pins 41D and 41F do not protrude from the through hole 47 of the insulating substrate 43, and the other portions protruding from the insertion holes 44 of the terminal pins are connected to a round pattern by solder. Then, the through hole 47 of the insulating substrate 43
An insulating resin 48 is injected into the inside. The terminal pins of the electronic component 42 such as coils are protruded from the insertion holes 44 and connected to the round pattern with solder.

Although the embodiments of the composite part of the present invention have been described above, the present invention is not limited to these embodiments.
For example, the number of terminal pins of an electronic component such as an insulating transformer and a coil may be any number. Further, the wiring patterns may be provided on both surfaces of the insulating substrate and connected through predetermined insertion holes.

[0010]

As described above, the composite component of the present invention is cut short so that at least one of the terminals to which a high voltage is applied or to which a high voltage may be applied is located in the through hole of the insulating substrate. Between terminals to which high voltage is applied,
The withstand voltage characteristics between the terminal to which a high voltage is applied and the wiring pattern can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a first embodiment of a composite part according to the present invention.

FIG. 2 is a partial sectional view of FIG.

FIG. 3 is a bottom view showing a state where terminal pins of an electronic component are inserted into a substrate.

FIG. 4 is a partial sectional view of a second embodiment of the composite part of the present invention.

FIG. 5 is a top view of a conventional composite part.

FIG. 6 is a partial sectional view of FIG. 5;

FIG. 7 is a bottom view of a conventional composite part in the process of being manufactured.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Insulation transformer 12 Electronic component such as coil 13 Insulating substrate

Claims (2)

[Claims] In a composite component having an electronic component including an insulating transformer mounted on a substrate, the substrate is provided with an insertion hole for inserting a terminal of the electronic component and a through hole larger than the insertion hole. A composite component characterized in that a predetermined terminal is cut so as not to protrude from the through hole and is insulated from a circuit. 2. The composite component according to claim 1, wherein an insulating material is injected into the through hole.