JPH056711Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] This is a front plate with a printed board attached to the front side of each printed board in order to block the printed board insertion/extraction opening in a box-shaped housing in which a large number of printed boards are installed in parallel. , bend one side edge of the front board at right angles to the back side of the printed board to provide an adhesive part, and then bend the tip of the desired part of the adhesive part inward.
Bend 180 degrees and provide a fixed seat. By bringing this fixing seat into close contact with the back surface of the printed board, and in that state attaching the fixing portion to the printed board using riveting means, the work of attaching the front board is easy, and
To provide a low-cost front plate with a printed board.

[Industrial application field]

The present invention relates to a front plate with a printed board attached to the front side of each printed board in order to close the printed board insertion/extraction opening of a box-shaped housing.

In an electronic device that uses a large number of printed boards, the individual printed boards are placed vertically in a box-shaped housing, and the large number of printed boards are mounted horizontally in parallel. Then, ventilation windows are provided in parallel on each of the lower and upper plates of the housing to force the cool air to circulate upward or downward.
It is common practice to cool printed boards.

A rectangular front plate is attached to the front side of each of the printed boards inserted in parallel to the housing, and with the printed boards installed in parallel to the housing, the printed board insertion/extraction opening of the housing is blocked, and cool air is removed. The cooling performance is improved by preventing the leakage of liquid to the outside through the printed board insertion/extraction opening.

[Prior Art] FIG. 4 is a diagram of a conventional example, in which a is a perspective view and b is a plan view. In Fig. 4, reference numeral 1 is a box-shaped housing with an opening on the front side and a printed board insertion/extraction port, and a backboard printed board 2 with many connectors arranged in parallel is mounted on the back bottom side, and the left and right sides are side panels. It is surrounded by

On the other hand, the printed board 3 to be attached to the housing 1 has a connector mounted on the side edge on the depth side, a mounted component 5 mounted on the mounting surface 3A, and the tip of the terminal 6 of the mounted component 5 inserted into the through hole. The mounted component 5 is fixed by protruding toward the back surface 3B side and soldering the terminal 6 and the through hole.

Guides are provided in parallel on the upper and lower plates of the housing 1, and a pair of upper and lower guides are selected to connect the printed board 3.
By inserting the upper and lower side edges of the printed board 3 and inserting the connectors mounted on the printed board 3 into the connectors on the backboard printed board 2, a large number of printed boards 3 are mounted horizontally in parallel on the housing 1. .

Ventilation windows (not shown) are arranged in parallel on each of the upper and lower plates to allow cool air to pass through from the bottom to the top, thereby cooling the individual printed boards 3.

4 is a rectangular front plate made of, for example, a metal plate, whose height is equal to the height of the printed board 3 and whose width is approximately equal to the parallel pitch of the printed board 3; In the corner, this front plate 4
There is a hole for attaching.

A side edge of the front plate 4 facing the back side 3B of the printed board 3 is bent at right angles to form a fixed part 4A, and holes corresponding to the holes in the printed board 3 are formed near the upper and lower ends of the fixed part 4A. A hole is provided in which the neck of the machine screw 7 is inserted.

After placing the fixed part 4A on the printed board 3 with a spacer 8 having a thickness almost equal to the thickness of the front plate 4 sandwiched between the inner surface of the fixed part 4A and the back surface 3B, screw the small screws 7 into each Insert into the hole. A washer 9A is inserted into the screw portion of the small screw 7 that protrudes toward the mounting surface 3A, and a nut 9 is further screwed to fix the front plate 4 to the printed board 3.

As mentioned above, on the front side of each printed board 3, a rectangular front plate 4 is provided perpendicularly to the mounting surface 3A.
Since it is fixed, when the printed board 3 is inserted into the housing 1 in parallel, the printed board insertion/extraction opening of the housing 1 is
The leakage of cold air toward the front side of the housing 1, as shown by the dotted line in FIG. 1a, is blocked by the parallel front plates 4.
Flow is significantly reduced and cooling is improved.

Note that the terminals 6 of the mounted components 5 protrude from the back surface 3B side of the printed board 3 and are soldered thereto, but the protruding height is equal to or slightly larger than the thickness of the front plate 4. .

Therefore, with only the thickness of the fixed portion 4A, when the printed board 3 is inserted or removed, there is a risk that the tip of the terminal 6 may get caught on the side edge of the front plate of the adjacent printed board. Furthermore, if the width of the front plates 4 is made small to prevent them from getting caught, a large gap will be created between the front plates, which will reduce the cooling efficiency.

In order to prevent the above problem, conventionally, a spacer 8 is interposed between the fixed portion 4A and the printed board 3.

[Problem that the invention attempts to solve]

However, the above conventional front plate mounting structure is
There were problems such as a large number of parts, poor work efficiency, and high costs.

The present invention was created in view of these points, and aims to provide a low-cost front plate with a printed board that has a reduced number of parts.

[Means for solving problems]

In FIG. 1, reference numeral 10 indicates the front side of the printed board 3 so as to be perpendicular to the mounting surface 3A in order to close the printed board insertion/extraction opening of the housing when the printed board 3 is inserted in parallel into the box-shaped housing. It is a rectangular front plate attached to the side edge of the

In order to solve the above conventional problems, the present invention provides a front plate 10 facing the back side 3B of the printed board 3.
Form the fixed part 11 by bending the side edges of the fixed part 11 at right angles toward the printed board 3, and then fold the tips of the tongue pieces formed by extending at least part of the upper and lower parts of the fixed part 11 inward. A fixed seat 12 is provided by bending 180 degrees.

Then, the surface of the fixed seat 12 is brought into close contact with the back surface 3B of the printed board 3, and the rivet holes 13 provided in the fixed seat 12 part and the rivet holes 14 provided in the upper and lower corners of the front side of the printed board 3 are connected. Align.

A rivet 15 is inserted into this rivet hole, and the tip of the rivet 15 is caulked to fix the front plate 10 to the printed board 3.

[Effect]

According to the above means of the present invention, the fixed portion 11 includes:
Since the fixing seat 12 is bent in half and has a thick plate, the terminal 6 portion protruding toward the back surface 3B of the printed board 3 does not become an obstacle to inserting and removing the printed board into and from the housing.

Therefore, there is no need for a spacer as in the conventional case, and since it is fixed by rivets, there is no need for nuts or the like. That is, the number of parts for fixing is small and the cost is low.

Note that rivet caulking work has better workability than screw screwing work, so fixing can be completed in a shorter time and costs are lower.

〔Example〕

The present invention will be specifically explained below with reference to the drawings. Note that the same reference numerals indicate the same objects throughout the figures.

Fig. 1 is a diagram of one embodiment of the present invention, a is a perspective view, b is a plan view, Fig. 2 is a perspective view of the main part of the embodiment of the present invention, and Fig. 3 is another embodiment of the present invention. FIG.

In FIG. 1, when the printed board 3 is inserted into the box-shaped housing in parallel, there is a hole on the front side edge of the printed board 3 so as to close the printed board insertion/extraction opening of the housing.
A rectangular front plate 10 made of a metal plate is fixed by rivets.

To be more specific, the side edge of the front plate 10, which faces the back side 3B of the printed board 3, is bent at right angles toward the printed board 3 to form the fixing part 11.

As shown in FIG. 2a, this fixing part 11 has a part of the upper and lower parts extending in a tongue shape parallel to the back surface 3B of the printed board 3, and the fixing seat 1 in the unfolded state.
2 is provided. Rivet holes 13 are provided at the base and tip of the tongue.

The tip of this tongue piece is inserted into the two rivet holes 13.
It is bent 180 degrees inward so that they overlap, and a fixed seat 12 is provided as shown in FIG. 2b.

Then, the surface of the fixed seat 12 is brought into close contact with the back surface 3B of the printed board 3, and the rivet holes 13 provided in the fixed seat 12 part and the rivet holes 14 provided in the upper and lower corners of the front side of the printed board 3 are connected. Align the position, insert the rivet 15 from the fixing seat 11 side, caulk it with the mounting surface 3A of the printed board 3, and attach the front plate 10.
is fixed to the printed board 3.

This rivet 15 is, for example, a blind rivet, which can be caulked from the side into which the rivet is inserted.

As mentioned above, since the rectangular front plate 10 is fixed to the front side of each printed board 3 perpendicular to the mounting surface 3A, when the printed board 3 is inserted in parallel to the housing, the print on the housing 1 is The board insertion/extraction openings are closed by the parallel front boards 10. Therefore, leakage and outflow of cold air to the front side of the housing is significantly reduced, and cooling performance is improved.

In addition, since the fixed portion 11 is provided with a fixed seat 12 which is folded in half and has a thick board, the printed board 3
The height of the tip of the terminal 6 protruding toward the back surface 3B side is smaller than the sum of the plate thicknesses of the fixing part 11 and the fixing seat 12, so that there is no problem in inserting and removing the printed board 3 into and from the housing, and The gap between the front plate fixed to the adjacent printed board can be reduced.

As described above, the present invention requires only the rivet 15 as a part to fix the front plate 10, so the number of parts for fixing is small and the cost is low.

The shape of the fixing seat is obtained by extending part of the upper and lower parts of the fixing part 11 into a tongue shape parallel to the back surface of the printed board, as shown in FIGS. 3a and 3b.
The tip thereof is cut out in a U-shape to provide a fixed seat 122 in an expanded state. A rivet hole 13 is then formed in the center of the root portion of the fixed seat 122.

Then, by bending the tip of this tongue piece 180 degrees inward and providing a fixed seat 122 as shown in Fig. 3b, the rivet holes 13 can be overlapped, unlike the case shown in Fig. 2. There is no need to pay attention to this, and the work of forming the fixing seat is easier than that shown in FIG.

[Effect of idea]

As explained above, the present invention provides a fixed seat corresponding to a spacer by bending it to the fixed part of the front plate.
In addition, it is fixed to the printed board using riveting means, and has excellent practical effects such as easy attachment of the front panel and low cost due to the small number of parts.

[Brief explanation of the drawing]

Fig. 1 is a diagram of an embodiment of the present invention, in which a is a perspective view, b is a plan view, Figs. 2 a and b are perspective views of main parts of an embodiment of the present invention, and Figs. FIG. 4 is a perspective view of a main part of another embodiment of the invention, and FIG. 4 is a diagram of a conventional example, in which a is a perspective view and b is a plan view. In the figure, 1 is a housing, 3 is a printed board, 4,
10 is a front plate, 4A, 11 is a fixed part, 5 is a mounting component, 6 is a terminal, 12, 122 is a fixed seat, 13, 1
4 indicates a hole for a rivet, and 15 indicates a rivet.

Claims (1)

[Claims for Utility Model Registration] When a plurality of printed boards 3 are inserted in parallel into a box-shaped housing, each of the printed boards 3 is inserted perpendicularly to the mounting surface 3A so as to close the printed board insertion/extraction opening of the housing. A rectangular front plate 10 is attached to the front side edge of the printed board 3, and one side edge of the front plate 10 is bent at right angles to the back side 3B of the printed board 3. Part 1
1, and a fixing seat 12 in which at least the upper and lower tips of the fixing part 11 are bent inward by 180 degrees, and with the fixing seat 12 in close contact with the back surface 3B,
A front plate with a printed board, characterized in that the fixing part 11 is fixed to the printed board 3 by rivet means.