JPH0570955B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a printed board storage device that can be used when assembling television receivers, video tape recorders, viewfinders for video cameras, and the like.

Conventional configurations and their problems In general, when assembling small devices such as video camera viewfinders, the internal configuration is an important point, especially when miniaturization of the external size is required.

The method of construction is to efficiently place the necessary parts on several printed boards, and to
They are constructed by combining them into a letter shape or a U shape as shown in Figure 1, and then stored in a box.

Each printed board is connected in a circuit, and one method for this is to provide terminal a on the middle printed board 5, insert it into the upper printed board 4 and the lower printed board 6, and solder it as shown in Figure 2. be. Also, the third
As shown in the figure, protrusions b corresponding to the number of circuit connections between the printed boards are provided on the middle printed board 8, and the same number of protrusions b as the number of protrusions b on the middle printed board 8 are provided on the upper printed board 7 and the lower printed board 9. There is a method in which a hole c is provided, the parts are fitted together, and a piece of foil stretched over the protrusion b and the hole c is used for soldering. Alternatively, as shown in FIG. 4, the upper printed board 10, the middle printed board 11, and the lower printed board 1
2 are connected with lead wires, a plurality of protrusions b' are provided above and below the middle printed board 11, and the upper printed board 10
and the protrusion of the middle printed board 11 on the lower printed board 12
There is also a method of assembling each printed board by making a hole c' that fits into hole b' and butting each printed board against each other.

However, with the method shown in Figure 2 or 3,
It is difficult to assemble the upper printed board and the middle printed board, or the middle printed board and the lower printed board, so that special materials such as metal fittings are required as shown in Fig. 5. Furthermore, if distortion occurs between the upper printed board and the middle printed board, or between the middle printed board and the lower printed board due to external stress, the soldered parts for connecting the printed boards will peel off, so it will be difficult to place the boards in the box. Very difficult to work with.

In addition, in the method shown in Figure 4, if a clearance is provided at the fitting part between the printed boards, there will be no effect of distortion between the printed boards, but the springiness of the lead wires makes it easy for the butt parts to come off, making assembly work very difficult. There was a difficult problem.

Furthermore, if each printed board has electrical adjustment points, the methods shown in Figures 2 and 3 would impose too severe restrictions on adjustment, and the method shown in Figure 4 would not allow each printed board to move easily. There was a problem that it was difficult to adjust because it easily came off.

Purpose of the Invention The present invention eliminates such conventional drawbacks, and has a simple printed board structure, no peeling of printed boards, and distortion between printed boards can be absorbed, making it easy to assemble and box. This provides an excellent printed board storage device.

Structure of the Invention In the printed board storage device of the present invention, a lower printed board, an upper printed board, and a middle printed board placed between them are butted against each other in a U-shape and fitted into the lower case, and the upper case is placed over this. It is designed to store three printed boards, and at the butt portions of the lower printed board, the middle printed board, and the middle printed board and the upper printed board, one printed board has a protrusion and the other printed board has a protrusion. A hole is provided in each of the protrusions to fit into the protrusion, and a protrusion facing the side is provided at the tip of the protrusion to attach the printed boards to each other in a removable manner. Between the free end side of the plate,
The upper end is in contact with electronic components fixed on the upper printed board, and the lower end is provided with a spacer that the lower printed board comes into contact with, and the lower printed board is inserted into the engagement hole formed in the lower end of the spacer. The tip of the protrusion provided on the lower case is engaged with the hole formed in the lower case.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 6A, a hook d facing the side is provided on the protrusion of the middle printed board 14, and a hole f into which the hook d can be fitted is provided in the upper printed board 13 and the lower printed board 15. establish.

Next, as shown in FIG. 6B, fit the upper printed board 13 and the lower printed board 15 onto the middle printed board 14,
Either slide the middle printed board 14 in the direction of the hook d, or slide the upper printed board 13 and lower printed board 15.
Slide the hook d in the opposite direction. By doing this, the three printed boards 13, 14, 15
is temporarily fixed and will not come off.

Moreover, as shown in FIG. 7, each printed board 13,
14 and 15 in a box (case) divided into upper case k and lower case 1, upper printed board 3
In order to keep the lower printed board 15 at a required predetermined distance, the following holding means is provided at a position away from the mounting portion of the middle printed board 14. That is,
A boss g that projects upward is provided on the inner surface of the lower case 1, and a hole m that fits into the boss g is provided in the lower printed board 15 inserted into the lower case 1.
After fitting the boss g into the hole m, lower printed board 15
Fit the spacer h into the boss g from the top. Part i of the printed board 13 is received by this spacer.
Furthermore, the upper printed board 13 and the lower printed board 15 are connected to several ribs j provided on the upper case k and the lower case 1.
By receiving the upper printed board 13 and the lower printed board 15 at a required predetermined distance, the upper printed board 13 and the lower printed board 15 can be maintained at a required predetermined distance.

Therefore, the distortion of the printed board caused by the external force applied to the upper case k, the lower case 1, etc. is eliminated by the positional misalignment of the spacer h and the electronic components on the upper printed board 13, so that the deformation of each print is reduced. To obtain a device that can prevent quality defects such as peeling at the soldered part of pattern wiring whose adhesive strength has decreased due to the heat during soldering caused by the deformation of the wiring, and which is easy to work with when assembling and repairing products. It is something that can be done.

Effects of the Invention As described above, according to the printed board storage device of the present invention, the lower printed board, the upper printed board, and the middle printed board placed between them are butted against each other in a U-shape, and A spacer is provided at the free end side of the lower printed board and upper printed board, which are located opposite the middle printed board, so that the upper end contacts the electronic components of the upper printed board and the lower end contacts the lower printed board. As a result, the distance between the lower printed board and the upper printed board is maintained.

Furthermore, since the tip of the protrusion provided on the lower case that penetrates the hole formed on the lower printed board is engaged with the engaging hole formed at the lower end of the spacer, the spacer and the lower printed board The positions of each printed board can be easily regulated, and the distortion of each printed board caused by external force applied to the upper case, lower case, etc. is eliminated by the positional shift between the spacer and electronic components, so the deformation of each printed board is eliminated. It is possible to prevent quality defects such as peeling at the soldered part of the pattern wiring where the adhesive strength has decreased due to the heat during soldering caused by the deformation of the printed circuit board. When configured, the lower printed board can be easily mounted at an appropriate position by guidance and position regulation by the protrusion.

Further, since the upper end of the spacer is brought into contact with the electronic component of the upper printed board, there is no need to set a space in which the space is brought into contact with the upper printed board.

Further, since the spacer and the upper printed board are not fixed, the printed board can be easily unfolded by removing the upper case, which is also useful for improving the workability of adjustment and service.

[Brief explanation of the drawing]

Figure 1 is a front view of three printed boards, Figures 2 A and B are developed front views and assembled front views of the conventional printed board storage device, and Figures 3 A and B are the conventional printed board storage device. FIG. 4 is an exploded perspective view of a conventional printed board storage device, FIG. 5 is a front view of an example of countermeasures against distortion between printed boards, and FIG.
Figures A and B are an exploded side view and an assembled side view of a printed board storage device according to an embodiment of the present invention, Figure 7 is an assembled cross-sectional view after putting it in a box, and Figure 8 is a perspective view of a spacer in the device. be. a...Pin for board connection, b and b'...protrusion of p-plate, c and c'...hole that fits into b and b', d...
A hook provided on the protrusion of the P plate, e...Lead wire group,
f...Hole that fits into the protrusion of P plate with hook d, g...Boss, h...Spacer, i and i'...
Parts, j...rib, k...upper case, l...lower case, m...hole in the p plate that fits into the boss g.

Claims (1)

[Claims] 1. A printed board storage device that stores three printed boards by aligning a lower printed board, an upper printed board, and a middle printed board placed between them in a U-shape, fitting them into the lower case, and covering this with the upper case. At the butting portions of the lower printed board and the middle printed board, and the middle printed board and the upper printed board, one printed board has a protrusion, and the other printed board has a hole that fits into the protrusion. , and a protrusion facing sideways is provided at the tip of the protrusion so that the printed boards can be detachably attached to each other, and the free end side of the upper printed board and the free end side of the lower printed board are In between, a spacer is provided, one end of which comes into contact with the electronic component on the upper printed board, and the other end of which comes into contact with the lower printed board, and the spacer is inserted into the engagement hole formed in the other end of the spacer. A printed board storage device characterized in that a tip of a protrusion provided on the lower case that passes through a hole formed in the lower printed board is fitted into the hole.