JPS5924557B2 - Electrical component wiring equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical component wiring device applied to a controller of an electric heating carpet, etc.

Conventional electrical component wiring devices have a configuration in which a predetermined landing pattern is formed on the copper foil on the back side of the board, electrical component leads are inserted into holes in the board from the front side, and connections are made by soldering etc. on the back side. . However, when applying this electrical component wiring device to a circuit with a large current capacity, the copper foil of a general printed circuit board has a thickness of about 35 to 70 μm, and considering problems such as its allowable current and heat generation, it is necessary to As the line width of the pattern becomes wider, the area occupied by the pattern becomes larger, and the distance between the lines and the distance between the control circuit patterns is required for insulation purposes, which results in a larger printed circuit board and, as a result, the entire unit becomes larger. There was a problem. For this reason, as means for achieving miniaturization, there have been two methods: connecting the power components to each other using lead wires, etc., and using a printed circuit board having copper foil on both sides.

However, the former has the disadvantage that assembly is troublesome and work efficiency is reduced, and the latter has better workability for component mounting than the former, but requires through-hole processing to connect the upper and lower copper foils. Not only is it expensive, but if the current capacity becomes particularly large, the reliability of the connection becomes poor, so it has the disadvantage that large currents cannot be passed through it. Furthermore, in order to solve this latter problem, conventionally, as shown in FIG. 1, there is a method in which soldering 5 is performed on the copper foils 3 and 4 on both sides of the board 2 using connection terminals 1 and the like.

6 is an electronic component.

Although this type can be made relatively inexpensive compared to the above, it has the disadvantage that it requires soldering on both sides, which takes a long time. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electrical component wiring device that is small in size, has a large current capacity, and can improve workability.

An embodiment of the invention is shown in FIGS. 2 to 6. That is, this electrical component wiring device for an electric heating circuit mounts the circuit (controller for electric heating carpet) A shown in FIG. 2 on the board 1 with the component arrangement as shown in FIG. 3. In these figures, P is a power source, H1 and H2 are planar heaters for the electric carpet, and Thb is a temperature detection sensor. Further, in circuit A, 51 is a power switch, 52 is a load changeover switch, and R
y is a control relay, F is a current or temperature fuse, is a terminal block, M is a power line, and L is a control circuit that controls relay Ry on/off by receiving a control signal from temperature detection sensor Th, transformer T, It includes a temperature control volume VR, a capacitor C, a resistor R, a transistor Q, and an integrated circuit component 1C. Now, the wiring device is formed by laminating a printed circuit board 7, a copper foil 8, a conductive plate 9, and an insulating layer 10, as shown in FIG.

The printed circuit board 7 has connection holes 11 punched at predetermined positions. The copper foil 8 mainly has a circuit pattern of the control circuit L formed thereon by printing and etching. The conductive plate 9 is made of copper, iron, brass, aluminum, etc., and is punched or etched to form a circuit pattern for power supply to the heaters H1 and H2, and has electrical connections or mechanical fixings at predetermined locations. For this purpose, a connecting protrusion 12 is formed (Fig. 5).
, and is inserted into the hole 11 of the printed circuit board 7 and soldered to a predetermined portion of the copper foil 8 (FIG. 6). The insulating layer 10 is made of vinyl chloride resin, polyethylene, polyester, or other plastic film, and portions of the circuit components and the conductive plate 9 where insulation is not required can be removed. In order to mount each circuit component in a predetermined position, an insulating layer 10 and a conductive plate 9 are prepared in advance.
The leads of the circuit components are inserted into the through holes formed in the printed circuit board 7 (see FIG. 6), and soldered from the copper foil 8 side (13).

In this case, at the insertion position of the control circuit components, either a large hole is formed in advance in the conductive plate 9 or a gap 9 where no pattern is located.
a to prevent the leads of the component 15 from being soldered to the conductive plate 9. On the other hand, the copper foil 8 is not located at the mounting position of the power component 15'. In FIG. 6, 16 is a lead wire connected to the carpet sensor Th. With this configuration, this electrical component wiring device has the following effects. That is, (1) since the conductive plate 9 can be selected according to the current capacity, the allowable current, heat generation, etc. can be reduced while downsizing. (2) For example, by using the copper foil 8 side of the printed circuit board 7 mainly as a control circuit pattern and using the conductive plate 9 mainly as a power pattern, miniaturization and simplification are possible. (3) All connections and fixings, including the protrusions 12, can be made by soldering from the copper foil 8 side, resulting in good workability.

(4) There is no need to secure space for components and space for wiring separately, making it possible to save space.

As described above, the electrical component wiring device of the present invention includes a conductive plate having a predetermined circuit pattern and connection protrusions at predetermined locations on the opposite side of a copper foil circuit pattern such as a single-sided copper foil laminate, and further Since an insulating layer is provided on the upper surface, the current capacity can be increased while being small and space-saving, and it has the effect of being excellent in workability.

[Brief explanation of drawings]

Fig. 1 is an enlarged sectional view of a conventional example, Fig. 2 is a circuit diagram of an electric heating carpet to which an embodiment of the present invention is applied, Fig. 3 is a plan view of a component wiring device, and Fig. 4 is an enlarged sectional view of main parts. , FIG. 5 is an exploded perspective view of the main parts, and FIG. 6 is a cutaway perspective view of the component mounted state. 7... Printed circuit board, 8... Copper foil, 9... Conductive plate, 10... Insulating plate, 12... Protrusion.

Claims (1)

[Claims] 1 a substrate, a copper foil laminated on one side of the substrate to form a predetermined circuit pattern, and a copper foil laminated on the other side of the substrate to form a predetermined circuit pattern and penetrating through the substrate to form a predetermined circuit pattern. An electrical component wiring device comprising a conductive plate with protrusions to be soldered to copper foil, and an insulating layer covering the conductive plate.