JPH05218612A - Printed-wiring-board assembly body - Google Patents

Abstract

PURPOSE:To execute a high-density mounting operation by a method wherein a U-shaped part is formed in the side face of a printed wiring board and the connecting part of an electronic component inserted into the U-shaped part is connected and fixed to a wiring pattern on the face of the printed wiring board. CONSTITUTION:A cutout 6 to which an electronic component 2 is mounted is formed in the side face of a printed wiring board 1. It is preferable that the depth H of the cutout 6 is made larger than the thickness of the electronic component 2a in order to avoid that the electronic component is short-circuited with a member situated at the outside of the printer wiring board 1. Then, the electronic component 2a which is rod-shaped is inserted into the cutout part 6; connecting parts 4 as input/output parts installed on both sides of the electronic component 2a and a wiring pattern 5 formed on the face of the printed wiring board 1 are brought into contact via a solder layer 3; they are connected and fixed by the solder layer 3. Thereby, a high-density mounting operation can be executed to the printed wiring board 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed wiring board assembly, and more particularly to a stack type printed wiring board assembly in which a plurality of printed wiring boards are three-dimensionally assembled via a support member.

[0002]

2. Description of the Related Art FIGS. 3 (a) and 3 (b) are a partial side view and a partially enlarged perspective view showing a printed wiring board assembly in a conventional example. Conventionally, as shown in FIG. 3, a printed wiring board assembly of this type includes printed wiring boards 1a and 1b having a plurality of electronic components 2 which are connected to a wiring pattern 5 formed on one surface by soldering and mounted. It is assembled by fastening with a screw 10 via a support rod 9. The cable 8 electrically connects the printed wiring boards 1a and 1b.

Such a printed wiring board assembly has a structure that is adopted when the wiring pattern is relatively rough and there are many electronic parts to be mounted, and it is widely used in the control part of general electric machines. It was

[0004]

The conventional printed wiring board assembly described above is mechanically connected by using a support rod to stack and assemble a plurality of printed wiring boards three-dimensionally and electrically connected by a cable. Therefore, there is a drawback in that the support bar on the printed wiring board cannot mount electronic parts on the peripheral area opening. This has a problem that it hinders the improvement of the mounting density of the printed wiring board.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printed wiring board assembly in which the area occupied by the mounting portion is reduced and electronic components can be mounted at a higher density in order to solve such a problem.

[0006]

A printed wiring board assembly of the present invention is a printed wiring board assembly in which a plurality of printed wiring boards are stacked and assembled via an intermediate member, and the printed wiring board assembly corresponds to each of the printed wiring boards. It is characterized in that a rod-shaped electronic component is inserted into a recess formed in a side edge portion of the printed wiring board, and both ends of the electronic component are connected to the wiring pattern of the printed wiring board.

[0007]

The present invention will be described below with reference to the drawings.

1 (a) to 1 (c) show a printed wiring board assembly according to an embodiment of the present invention, in which (a) is a side view and (b) and (c) are parts A of FIG. It is an expansion perspective view. This printed wiring board assembly is provided with a notch 6 at the corresponding side edge portion, a rod-shaped electronic component 2a is fitted in the notch 6, and its input / output portion is connected to the wiring pattern 5 of the printed wiring boards 1a and 1b. That is, they are connected by the solder layer 3.

Next, the assembly of this printed wiring board assembly will be described. First, the printed wiring boards 1a and 1
The electronic component 2 is placed on the wiring pattern 5 drawn on one surface of b, brought into contact with the wiring pattern 5 through the connection portion 4, and the electronic component 2 is mounted on the surface of the printed wiring board 1 by the solder layer 3. Next, the notch 6 for mounting the electronic component 2 is formed on the side surface of the printed wiring board 1. The notch 6 may be formed in advance. Further, the depth H of the notch 6 may be made larger than the pressure h of the electronic component 2a. This is to avoid a short circuit with a member outside the printed wiring boards 1a and 1b. As an example, if the thickness h of the electronic component is 5 mm, the depth of the recess is about 7 mm. Next, the electronic component 2 is inserted into the notch 6, and the solder layer 3 is formed by connecting the input / output portions provided at both ends of the electronic component 2 and the wiring pattern 5 provided on the surface of the printed wiring board 1. And contact them.

In this way, the printed wiring boards 1a and 1b can be mechanically and electrically connected only by the electronic component 2a. This means that the electronic component 2a conventionally mounted outside the mounting portion area is transferred into the mounting portion area, and is mounted also in the area conventionally occupied for mounting. The mounting density on the printed wiring board can be improved.

FIG. 2 is a partial perspective view for explaining a printed wiring board assembly according to another embodiment of the present invention.
In this printed wiring board assembly, as shown in FIG. 2, projections 7 are provided on both sides instead of the notches in the above-described embodiment, and a recess is provided in the center. Other than that, it is the same as the above-mentioned embodiment. That is, electronic parts are mounted in the recesses between the protrusions 7.

In the case of this embodiment, as compared with the above-mentioned embodiment, since the projection 7 can be fixed by adhesion at an arbitrary position, there is an advantage that the mounting portion can be freely selected.

[0013]

As described above, according to the present invention, the side surface of the printed wiring board is provided with a recess for inserting an electronic component, and the connection portion of the electronic component inserted in the recess is brought into contact with the wiring pattern on the surface of the printed wiring board. Then, by fixing the connection with the solder layer, mechanical and electrical connection can be performed at the same time. Therefore, since the electronic components can be mounted in the area occupied by the mounting portion in the related art, there is an effect that a printed wiring board assembly capable of higher density mounting can be obtained.

[Brief description of drawings]

FIG. 1 shows a printed wiring board assembly according to an embodiment of the present invention, in which (a) is a side view and (b) and (c) are enlarged perspective views of a portion A of (a).

FIG. 2 is a partial perspective view illustrating a printed wiring board assembly according to another embodiment of the present invention.

FIG. 3 shows an example of a conventional printed wiring board assembly,
(A) is a side view and (b) is a partially enlarged perspective view.

[Explanation of symbols]

 1a, 1b Printed wiring board 2, 2a Electronic component 3 Solder layer 4 Connection part 5 Wiring pattern 6 Notch 7 Protrusion

Claims (1)

[Claims] 1. A printed wiring board assembly in which a plurality of printed wiring boards are stacked and assembled via an intermediate member, and a rod-shaped electronic component is formed in a recess formed in a side edge portion corresponding to each of the printed wiring boards. And a wiring pattern of the printed wiring board is connected to both ends of the electronic component.