JPH0537116A - Laminate circuit board device - Google Patents

Abstract

PURPOSE:To provide a title device wherein the cost is reduced and a circuit board is effectually prevented from being separated without reduction of a mounting area to realize a high density laminate circuit board. CONSTITUTION:A convex portion 11a of a sub-circuit board 11 is fitted in an elongated hole 13a in a circuit board fixing frame 13, and a convex portion 11b of the sub-circuit board 11 is fitted in an elongated hole 14a in a circuit board fixing frame 14. Further, opposite portions of the circuit board fixing frame 13 are fitted to concave portions 12a, 12b in a main circuit board 12 while opposite portions of the circuit board fixing frame 14 is fitted in the concave portions 12c, 12d in the main circuit board 12, whereby the sub-circuit board 11 is separated and fixed to the main circuit board 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated circuit board device used in electronic devices.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional laminated circuit board device.

In FIG. 4, 1 is a sub-circuit board,
2 is a main circuit board. Connector 1 on sub-board 1
a, 1b are provided, and the connector 2 is provided on the main circuit board 2 so as to face and connect to the connectors 1a, 1b.
a and 2b are provided.

3a and 3b are spacers, and the sub-board 1
Between the main circuit board 2 and the screw 4
a and 4b are fixed to the sub-board 1, and screws 5a and 5b
It is fixed to the main circuit board 2.

Reference numeral 6 denotes a shield case, which fixes the laminated sub-board 1 and main circuit board 2 inside with a screw 7.

Next, the function of the above configuration will be described.
The sub circuit board 1 and the main circuit board 2 are connectors 1
a and 1b and the connectors 1a and 1b are connected,
The spacers 3a and 3b are separated from each other and fixed by screws 4a and 4b and screws 5a and 5b.

As described above, even in the above-mentioned conventional laminated circuit board device, even if a direct vibration or impact is applied after the assembly is completed, it is fixed by the spacers 3a, 3b and the screw screws 4a, 4b and the screws 5a, 5b. The detachment of the circuit board 1 can be prevented.

[0008]

However, in the above-mentioned conventional laminated circuit board device, since the spacers 3a and 3b are fixed in the sub circuit board 1 and the main circuit board 2,
The mounting area of the component is reduced only in this portion, and it becomes impossible to cope with the recent dense packaging of the circuit board. Further, the screw screws 4a and 4b and the screws 5a and 5b are required, which causes a problem that the number of assembling steps increases and the cost increases.

The present invention is intended to solve the above-mentioned problems, and it is possible to effectively prevent the circuit board from being detached from the circuit board without reducing the cost and the mounting area, and to achieve a high-density laminated circuit board and to stabilize the circuit board. It is an object of the present invention to provide an excellent laminated circuit board device that can achieve the above operation.

[0010]

In order to achieve the above object, the laminated circuit board device of the present invention has first and second convex portions and two concave portions provided on at least two side surfaces.
Along with the circuit board and the opening is fitted into the convex part,
Both side portions are fitted in the two recesses, and a fixing frame for fixing the first circuit board and the second circuit board with a space therebetween is provided.

[0011]

Therefore, according to the laminated circuit board device of the present invention, the convex portions of the first circuit board or the second circuit board are separated from each other and are fitted into the openings of the fixing frame, and the first circuit board or Since the two concave portions of the second circuit board are spaced apart and are fitted into both side portions of the fixed frame to be fixed,
The cost is reduced and the mounting area is not reduced, so that the circuit board can be effectively prevented from coming off and a high-density laminated circuit board can be achieved, and stable operation can be obtained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a laminated circuit board device of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows the configuration of the embodiment. In FIG. 1, reference numeral 11 denotes a sub-circuit board, which has convex portions 11 at both ends.
a and 11b are provided.

Reference numeral 12 denotes a main circuit board, which has two recesses 12a, 12b, 12c at the center of both sides in the longitudinal direction.
12d is formed. Connector 11 on sub-board 11
m and 11n are arranged, and the connectors 12m and 12n are arranged on the main circuit board 12 so as to face and connect to the connectors 11m and 11n.

Reference numerals 13 and 14 denote circuit board fixing frames, and the circuit board fixing frames 13 and 14 are elongated holes 13a and 1 respectively.
4a is provided. Slot 13 of circuit board fixing frame 13
The convex portion 11a of the sub-circuit board 11 is fitted in a, and the sub-circuit board 1 is inserted into the long hole 14a of the circuit-board fixing frame 14.
The convex portion 11b of No. 1 is fitted. Further, the portions on both sides of the circuit board fixing frame 13 are provided in the concave portion 1 of the main circuit board 12.
2a, 12b, and similarly, the circuit board fixing frame 14
The parts on both sides of the concave portions 12c of the main circuit board 12 are
It is fitted in 2d.

Reference numeral 16 denotes a shield case, in which the laminated sub-board 11 and main circuit board 12 are housed inside and fixed by screws 17.

FIG. 2 shows a long hole 14a of the circuit board fixing frame 14.
The convex portion 11b of the sub-circuit board 11 is fitted in, and the portions on both sides of the circuit board fixing frame 14 are fitted in the concave portions 12c and 12d of the main circuit board 12.

In this way, the circuit board fixing frame 13 is fixed to the main circuit board 12. The above members are
It can be manufactured from a single substrate material.

FIG. 3 shows the structure when the substrate is manufactured from this one substrate material. The sub-board 11 and the main circuit board 1 are shown in FIG.
2 and the circuit board fixing frames 13 and 14 are divided by perforations.

In this case, a desired member can be manufactured at once with one substrate material. Next, the function of the above configuration will be described.

Sub circuit board 11 and main circuit board 12j
Are connectors 11m and 11n and connectors 12m and 12n
Are connected and fixed by the circuit board fixing frames 13 and 14. In this case, it is possible to prevent the circuit board fixing frames 13 and 14d from coming off from the sub circuit board 1 even if a direct vibration or impact is applied after the assembly is completed.

As described above, according to the above-described embodiment, the convex portion 11a of the sub-circuit board 11 has the elongated hole 1 of the circuit board fixing frame 13.
3a, and the convex portion 1 of the sub circuit board 11
Since the sub circuit board 11 is fixed to the main circuit board 12 only by fitting 1b into the elongated hole 14a of the circuit board fixing frame 14, the sub circuit board 11 and the main circuit board 1
Spacers and the like are not arranged in the circuit pattern of No. 2, and the dense mounting can be achieved without reducing the component mounting area.
Furthermore, by utilizing the marginal portions of the sub circuit board 11 and the main circuit board 12, it is possible to suppress cost increase without the need for dedicated parts such as spacers. Further, according to the above-mentioned embodiment, the connectors 11m and 11n and the connector 1 for fixing the sub-circuit board 11, the main circuit board 12, and the circuit board fixing frames 13 and 14 are fixed by the clearances.
No load is applied to the joint portions of 2 m and 12 n, and the reliability of the joint portions is improved.

Further, since metal such as screws is not used, the high-frequency equipment can operate stably without being affected by the pattern change of the grounding portion and the high-frequency wraparound.

The sub-circuit board 11 has convex portions 11a,
11b is provided, and the main circuit board 12 is provided with recesses 12a, 12a.
Although b, 12c, and 12d are provided, the invention is not limited to this, and any combination may be provided.

[0025]

As is apparent from the above description, in the laminated circuit board device of the present invention, the convex portions of the first circuit board or the second circuit board are spaced apart from each other and are fitted into the openings of the fixing frame. Since the two concave portions of the first circuit board or the second circuit board are spaced apart and are fitted and fixed to both side portions of the fixing frame, the cost is reduced and the mounting area is not reduced. It is possible to effectively prevent the disconnection, achieve a high-density laminated circuit board, and obtain stable operation.

[Brief description of drawings]

FIG. 1 is a diffusion perspective view showing a configuration in an embodiment of a laminated circuit board device of the present invention.

FIG. 2 is a perspective view showing a main part of the embodiment.

FIG. 3 is a plan view for explaining a manufacturing process according to the embodiment.

FIG. 4 is a diffusion perspective view showing a configuration of a conventional laminated circuit board device.

[Explanation of symbols]

 11 Sub Circuit Board 11a, 11b Convex Part 12 Main Circuit Board 12a, 12b, 12c, 12d Recess 11m, 11n, 12m, 12n Connector 13, 14 Circuit Board Fixing Frame 13a, 14a Long Hole

Claims (1)

Claims: 1. First and second circuit boards having at least two side surfaces provided with one convex portion and two concave portions, and an opening portion fitted into the convex portion and two A laminated circuit board device comprising: a fixing frame having both side portions fitted in a recess and fixing the first circuit board and the second circuit board so as to be separated from each other.