JP2813136B2 - Printed circuit board device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board device such as a control box for accommodating large and small printed circuit boards of different sizes. Hereinafter, an example of a control box will be described. A large board is described as a one-board board, and a small board is described as an optional board.

[0002]

2. Description of the Related Art FIG . 3 is a cross-sectional plan view showing the structure of a conventional control box of this kind shown in Official Technique No. 88-8987. In FIG. 1 is a one-board board, 2 is an electronic component mounted on the one-board board 1, 3 is an optional board, 4 is a motherboard in which connections between the boards are patterned, and 5 is one of the one-board boards 1 in FIG. The hinge 6 for rotating to the state of the dashed line in 6 is a box-shaped control frame for accommodating them.

Next, the operation will be described. As shown in FIG. 3 , the one-board board 1 is divided into two parts by a hinge 5, and the option board 3 can be inspected by rotating one of the one-board boards 1 to a state shown by a chain line.

[0004]

The conventional apparatus is configured as described above and is miniaturized. However, since the one-board board is divided into two parts, the structure is complicated, and the structure is complicated. Unless the one-board board is opened, the option board cannot be inspected, and therefore the option board cannot be directly inspected.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an apparatus which facilitates maintenance and inspection of all boards without dividing a one-board board into two parts, and which can be downsized. It is an object.

[0006]

According to a first aspect of the present invention, there is provided a printed circuit board device in which a step is provided on a motherboard and a one-board board and an optional board are mounted on the same side of the motherboard.

In a printed circuit board device according to a second aspect of the present invention, a motherboard is disposed at a right angle at an intermediate position of a one-board board, and an optional board is mounted on the motherboard.

[0008]

In the printed circuit board device according to the first aspect of the present invention, the structure in which the steps are provided on the motherboard allows all the boards to be directly and easily inspected, and allows the frame to be made compact and the frame to be compact. The space on the side of the main body in which is stored can be effectively utilized.

In the printed circuit board device according to the second aspect of the present invention, since the motherboard is mounted at an intermediate position of the one-board board, the mounting structure of the motherboard on the frame side is unnecessary, and the structure can be simplified accordingly. Can be short.

[0010]

[Embodiment 1] Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
In the figure, reference numeral 4 denotes a box-shaped control frame provided with a step 6a .
6 and is held by the support 11 in the step 6a.
A motherboard provided with matching steps 4a, on both sides
One board 1 which is a large board on the same side of
And an optional board 3 which is a small board . Reference numeral 12 denotes a window opened on one side of the control frame 6 for inspecting the one-board board 1 and the option board 3.

As shown in FIG . 1, a step 4a is provided on the motherboard 4 on which the one-board board 1 and the option board 3 are mounted , so that the one-board board 1 can be integrated without being divided into two parts. Since the option board 3 is arranged on the same side as the one-board board 1, all the boards can be directly and easily inspected. Further, in FIG. 1 , by providing the step 6a,
Since the control frame 6 can be omitted only in the portion 6b indicated by a circle , the control frame 6 can be made compact and the space on the main body side in which the control box is stored can be effectively utilized. Optional board 3
Are arranged on the same side as the one-board substrate 1,
Easy and direct inspection of all substrates, and C direction
Of single-sided inspection from the front, improving maintainability
Having.

Embodiment 2 FIG. In the above embodiment, the structure in which the motherboard 4 is mounted on the control frame 6 is adopted .
As described above, the motherboard 4 is arranged and mounted in the central portion of the one-board board 1 at right angles, and the option board 3 is mounted on the motherboard 4 in parallel with the one-board board 1. Thus, the one-board board 1 can be integrally formed without being divided into two parts, and since the option board 3 is disposed on the same side as the one-board board 1, all the boards can be directly and easily inspected. Can be. Further , an oblique portion 6c is formed in a part of the control frame 6.
In addition, the size of the control frame 6 can be reduced , and the motherboard 4 can be mounted on the one-board substrate 1. Therefore, the mounting of the motherboard 4 is not required on the control frame 6 side, and the structure of the control frame can be simplified. Further, there is an effect that the length of the motherboard 4 can be reduced.

In the above embodiment, the control box has been described as an example. However, the same effect can be obtained for a relay panel containing printed circuit boards of different sizes and other units.

[0014]

The printed circuit board device according to the first aspect of the present invention has a structure in which a step is provided on the motherboard, so that all the boards can be directly inspected easily and the frame can be made compact. Thus, the space on the main body side in which the frame is stored can be effectively utilized.

In the printed circuit board device according to the second aspect of the present invention, since the structure is such that the motherboard is mounted at the center of the large substrate, the structure for mounting the motherboard on the frame side is unnecessary, and the structure can be simplified. Can be shortened.

[Brief description of the drawings]

FIG. 1 is a sectional plan view showing a first embodiment of the present invention.

FIG. 2 is a sectional plan view showing a second embodiment of the present invention.

FIG. 3 is a sectional plan view showing the structure of a conventional control box.

[Description of Signs] 1 One board board, 3 optional boards, 4 motherboards
Board, 6 control frame, 11 support, 12 board
Window for checking.

Claims (2)

(57) [Claims] 1. Large and small sizes having different sizes in a box-shaped frame.
The above-mentioned box-shaped
When installing a motherboard with steps inside the frame
Large board on the same side of the motherboard
And mount the large and small boards in parallel,
A printed circuit board device provided with a window for inspecting each of the above-mentioned boards on one side . 2. Large and small sizes having different sizes in a box-shaped frame.
The above-mentioned box-shaped
Motherboard at the middle position of the large board placed in the frame
The motherboard at right angles and attach a small board to this motherboard.
And a window for inspecting each of the substrates is provided on one side of the frame.