JP2526139Y2 - Connection structure of electric circuit board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a connection structure for an electric circuit board, and more particularly, to a high-frequency circuit formed in the same housing and mounted in a partitioned space part that is electrically shielded from each other. The present invention relates to a connection structure such as a substrate.

(Prior art) As a mounting structure of this kind of high-frequency circuit board, conventionally,
As shown in FIGS. 3 (a) and 3 (b), the inside of one housing 3 closed by the lid 1 is partitioned by the partition 2, and the partition spaces 8 and 9 are electrically shielded from each other. Necessary electric circuit boards 5 and 6 are installed so that the surface heights thereof are the same, and both boards 5 and 6 are connected by connecting cord 4 penetrating partition wall 2.
Was connected. The connection cord 4 was inserted into the groove 7 formed in the center of the partition 2 from the lid side.

(Problem to be Solved by the Invention) In the above-described conventional mounting structure, care is taken so that the electric circuit board in the housing space is electrically shielded by the lid and the partition wall. In order to connect the electric circuit boards in each partitioned space, a groove for passing the connection cord is made to pass through the partition, so that the shielding effect of the housing is impaired due to this groove, and complete electrical There was a problem that it was difficult to keep the shield.

The present invention provides a connection structure for an electric circuit board that can be effectively connected without impairing the shielding effect of the housing, in contrast to the connection between two electric circuit boards that need to be electrically shielded from each other, which has conventionally been a problem. What you want to do.

(Means for Solving the Problems) In the connection structure for an electric circuit board according to the present invention, partitioned space portions that are electrically shielded from each other by a partition wall are formed in a housing, and the surface height is the same in each space portion. First and second
The electric circuit board is installed, and a hole is formed in the housing at the position of the partition wall from the side opposite to the mounting side of the first and second electric circuit boards. 1. A third electric circuit board is accommodated and fixed so as to have the same surface height as the second electric circuit board, and these first, second and third electric circuit boards are electrically connected. Things.

(Embodiment) Next, the present invention will be described by way of an embodiment with reference to the drawings.

1 (a) and 1 (b) show a mounting structure of an electric circuit board according to a first embodiment of the present invention. FIG. 1 (a) is a side sectional view along a connection direction, and FIG. FIG. 2B is a sectional view taken along line AA of FIG. 1A. The casing 13 is closed by the lid 10, and the inside of the casing is divided into two partitioned spaces by the partition walls 12.
18, 19, each of which is a first electric circuit board which requires an electric shield from each other.
15, the second electric circuit board 16 is installed on the bottom wall of the housing at the same surface height as the conventional example shown in FIG. 3, but in the present invention, these first and second electric circuits are provided. An electric circuit board for third connection between the boards 15 and 16 so as to straddle the partition wall 12
20 are provided so as to have the same surface height.
In the embodiment of FIGS. 1 (a) and 1 (b), a counterbore-shaped hole 21 is drilled from the side of the housing 13 opposite to the side on which the electric circuit boards 15 and 16 are mounted. A fixing base 22 on which the electric circuit board 20 is installed is fixed by fixing screws 23 and 24 so as to close the hole. The partition wall 12 is formed with a small hole 17 for preventing contact with a signal line on the circuit board, and between the first electric circuit board 15 and the third electric circuit board 20 and between the second electric circuit board 16 and the second electric circuit board 16. The connection with the third electric circuit board 20 is made by connection conductors 11 and 14, respectively.

FIG. 2 is a side sectional view showing a second embodiment of the present invention. In this embodiment, the third electric circuit board 20 is directly fixed to the partition 12 by the fixing screw 25 through the hole 21 formed in the housing 13, and the assembling work is easier than in the case of FIG. And the number of parts is small. In this embodiment as well,
The first, second, and third electric circuit boards 15, 16, 20 have the same surface height, and these boards are connected by connection conductors 11, 14. In some cases, a third electric circuit board
After the 20 is fixed to the partition 12, the hole 21 of the housing 13 may be closed with a plate-like member.

(Effects of the Invention) As described above, according to the present invention, it is not necessary to form a long groove for passing a connection cord between circuit boards in the partition partitioning the inside of the housing as in the related art. It is sufficient to form a small hole to avoid contact with the signal lines of the first and second lines. Also, since the bottom of the partition is at the same height as the first and second electric circuit board surfaces, the first and the second The third electric circuit board can be adhered at the same surface height as the circuit board,
Further, since the fixing member of the third electric circuit board can be fixed to the housing by means such as a screw, the hole portion of the housing can be electrically closed, thereby preventing the electric shield effect from being impaired. 1. There is an effect that the second electric circuit board can be effectively connected.

[Brief description of the drawings]

FIG. 1A is a side cross-sectional view of a connection structure for an electric circuit board according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A. FIG. 2 is a side sectional view of a second embodiment of the present invention, and FIGS. 3A and 3B are a side sectional view and a BB line sectional view of a conventional electric circuit board connection structure. 10 ... lid, 11, 14 ... connecting conductor, 12 ... partition, 13 ...
... Housing, 15... First electric circuit board, 16... Second electric circuit board, 17... Small hole, 18, 19.
Third electric circuit board, 21 ... hole, 22 ... fixed base, 23, 2
4,25 …… Fixing screw.

Claims (1)

(57) [Scope of request for utility model registration] A first and second electric circuit boards are provided in a housing so as to form partitioned space portions electrically shielded from each other by partition walls, and to have the same surface height in each space portion; At the position of the partition wall, a hole is drilled in the housing from the side opposite to the mounting side of the first and second electric circuit boards, the hole spans both spaces, and the first and second electric circuit boards are A third electric circuit board is accommodated and fixed so as to have the same surface height as that of the first and second electric circuit boards, and the first, second, and third electric circuit boards are electrically connected to each other. .