JPH0213959B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a printed board shelf into which printed boards each having a common bus connector mounted thereon are inserted in parallel.

(b) Background of the technology In recent years, electronic devices have been miniaturized by mounting components on printed boards with high density and by arranging many of these printed boards in parallel on shelves. As a result, each input/output circuit cannot be constructed only from the rear plate side of the shelf, so a connector is mounted on the front edge of the printed board while it is inserted into the shelf.

(c) Conventional technology and problems The conventional shelf into which this type of printed circuit board is inserted has a box-shaped structure with connectors arranged side by side on the rear plate and guides arranged opposite to the upper and bottom plates. be. Then, a printed board is inserted into each guide and connected to the corresponding connector on the rear board.

Furthermore, cable connectors as many as the number of printed circuit boards are mounted in parallel on the long strip-shaped flat cable that serves as the common bus line. Each of these cable connectors is inserted into each of the common bus connectors mounted on the front edge of the printed board after the printed board is inserted into the shelf in parallel.

In addition, in order to prevent the printed circuit board from coming off due to equipment vibration, or from poor connector contact, fix both ends to the front of both side plates with screws, etc. on the opening side of the shield. A long and narrow holding plate is installed. This holding plate is constructed so that the side surface on the printed board side presses the front edge of each printed board.

However, if a problem occurs with the printed board and the printed board is to be removed from the shelf for maintenance or inspection, the holding plate must first be removed. Then, the printed board to be removed and the cable connectors attached to the many printed boards adjacent to it must be removed from the common bus connector, the flat cable must be removed from the opening side of the shelf, and then the printed board must be pulled out. There is such an annoyance.

Furthermore, when the device is in operation, the flat cable hangs down from the front of the shelf, which not only spoils the aesthetic appearance, but also poses a risk of hands etc. getting caught in the flat cable and damaging the device.

(d) Purpose of the Invention The present invention was created in view of the above points, and provides a shelf for printed boards that facilitates maintenance and inspection of individual printed boards arranged in parallel with the shelf and has a good appearance. It is intended to.

(e) Structure of the Invention In order to achieve the above-mentioned object, the present invention provides an external wire connector which is inserted into the connector 7 disposed on the rear plate 5 of the shield main body 20, as illustrated in FIGS. 1 to 3. A plurality of printed boards 14 having connectors 15 mounted on the rear edge and common bus connectors 16 mounted on the front part of the upper edge, and having a height desirably greater than the height of the printed boards 14 are printed on the bottom board 3. A shelf main body 20 in which guides for inserting the lower edge of the board 14 and guides for inserting the rear part of the upper edge of the printed board 14 into the middle board 6 parallel to the bottom plate 3 are arranged, and an upper part of the front edge of each printed board 14. The slits 12 that are inserted into and engage the front plate 10 arranged on the retaining plate part 11 parallel to the bottom plate 3, and the flat cable 17 equipped with the cable connector 18 that is inserted into each common bus connector 16. The structure shall be equipped with the following.

The flat cable 17 is wired in a space above the front part of the printed board row, and the front plate 10 is removably installed on the front upper part of the shelf body 20.

(f) Embodiments of the Invention The present invention will be described in detail below with reference to illustrated embodiments.

FIG. 1 is a perspective view showing a shelf according to an embodiment of the present invention in separated form, FIG. 2 is a perspective view of a printed board, and FIG. 3 is a sectional view of the shelf.

In FIG. 1, a pair of shield main body side plates 1 of a shield main body 20 are metal plates whose height is desirably higher than the height of a printed board (printed board 14 in FIG. 2) and whose depth is approximately equal to the length of the printed board. It is.
At the upper part of the front side of each shelf main body side plate 1, a fixing plate 2 is formed which is cut and raised inward at right angles to form a vertical surface. A convex surface of a front plate 10 (described later) comes into contact with this fixing plate 2, and a locking latch 13
A hole is provided for engagement and fitting.

The bottom plate 3 of the shell body 20 is made of a metal plate,
There are two parallel protrusions on the front surface of the shelf, one on the front and one on the front, which are trapezoidal when viewed from the side. This convex portion is cut at equal pitches to form guide grooves 4 perpendicular to the front surface of the shield. This bottom plate 3 is fixed to the lower part of the shelf main body side plate 1 by spot welding or the like.

A rear plate 5 having a height substantially equal to that of the printed board is fixed to the rear surface of the side plate of the shelf main body, and connectors 7 are arranged in parallel on the inner surface of the rear plate in correspondence with the respective guide grooves 4. Reference numeral 6 denotes a middle plate having a width sufficiently shorter than the length of the printed board, and is provided with a protrusion in the shape of a table when viewed from the side parallel to the front surface of the shelf.
This convex portion is cut at equal pitches to form guide grooves 6a perpendicular to the front surface of the shield. This middle plate 6 is located at the rear of the shelf body side plate 1 at the height of the rear plate 5, parallel to and facing the bottom plate 3.
Both ends are firmly attached to the shelf body side plate 1.

The front plate 10 has a channel-shaped side view and has a height desirably greater than the height difference between the shelf main body side plate 1 and the printed board. A portion 10a is formed. Holes into which locking latches 13 are fitted are provided near the ends of both sides of the convex portion 10a, corresponding to the holes in the fixing plate 2. In addition, the retaining plate portion 11, which is the lower surface of the front plate 10, has a groove that corresponds to the guide groove 4.
Slits 12 are provided in parallel, into which the upper part of the front edge of each printed board inserted into the shelf is inserted and engaged.

After inserting the printed board into the shelf body, this front plate 10 is inserted between the upper parts of the pair of opposing side plates 1 of the shelf body so that the convex surface portion 10a is in contact with the fixing plate 2, and the locking latch 13 is inserted into the hole. It is fitted and fixed to the shelf main body 20. The front plate 10 can be easily removed from the shelf body 20 by pulling out the locking latch 13.

Further, a reinforcing plate 8 having a width approximately equal to the length of a common bus connector 16, which will be described later, is fixed to the upper front side of the shelf main body side plate 1.
This reinforcing plate 8 is fixed by screwing or the like so that fixing plate portions 9 formed on both end faces are parallel to the bottom plate 3 and cover the upper part of the wired flat cable 17.

In FIG. 2, an external line connector 15 that is inserted into the connector 7 of the rear plate 5 is mounted on the rear edge of each printed board 14. As shown in FIG. Further, a common bus connector 16 is mounted on the front portion of the upper edge.

17 is a long strip-shaped flat cable that is a common bus line. As many cable connectors 18 as the number of printed boards are mounted in parallel on the flat cable 17 at pitch intervals that are sufficiently longer than the pitches of the inserted printed boards 14.

When the printed board 14 is inserted into the shelf constructed as described above, the result will be as shown in FIG. 3.

With the front plate 10 removed, print board 1
4 is inserted into the shield main body between the guide groove 4 and the guide groove 6a, and the external line connector 15 is connected to the connector 7 of the rear plate 5. Next, cable connector 1
8 is inserted into the common bus connector 16 of each printed board 14 to connect the flat cable 17 and the printed board 14. Then, the front view 10 is attached to the shelf main body, and the upper part of the front edge of each printed board 14 is inserted into the slit 12 to prevent the printed board 14 from swinging back and forth and from side to side. Note that the printed board 14 does not slip out because its upper front edge is pressed against the bottom surface of the slit 12 of the front board 10.

Furthermore, the upper front surface of this shelf is covered with a front plate 10, and the flat cable 17 is also covered with a reinforcing plate 8, giving it a beautiful appearance.

To remove any one of the printed circuit boards inserted in this manner, the locking latch 13 is pulled out and the front panel 10 is removed. Next, the printed board can be easily removed by simply pulling upward the cable connector inserted into the printed board to be removed.

(g) Effects of the Invention As explained above, the present invention has a front plate that also serves as a holding plate to prevent the printed board from falling off, so the number of parts is small, it is lightweight and low cost, and it is easy to maintain and inspect the printed board. It has excellent practical effects, such as being easy to clean and having a beautiful appearance.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a shelf according to an embodiment of the present invention in separated form, FIG. 2 is a perspective view of a printed board, and FIG. 3 is a sectional view of the shelf. In the figure, 1 is the side plate of the shell body, 3 is the bottom plate, 5 is the rear plate, 6 is the middle plate, 4, 6a are the guide grooves, 8 is the reinforcing plate, 10 is the front plate, 14 is the printed board, 15 is the external line connector, 16 is a common bus connector, 1
7 indicates a flat cable, and 18 indicates a cable connector.

Claims (1)

[Claims] 1. A plurality of prints in which an external line connector 15 to be inserted into the connector 7 provided on the rear plate 5 is mounted on the rear edge, and a common bus connector 16 is mounted on the front of the upper edge. A plate 14 and a guide whose height is desirably larger than the height of the printed board 14 for inserting the lower edge of the printed board 14 into the bottom plate 3 are attached to the middle board 6 parallel to the bottom board 3 above the printed board 14. A shelf main body 20 in which guides for inserting the rear parts of the edges are arranged, and a front plate in which slits 12 into which the upper part of the front edge of each printed board 14 is inserted and engaged are arranged in a retaining plate part 11 parallel to the bottom plate 3. 10, and a flat cable 17 equipped with a cable connector 18 that is inserted into each of the common bus connectors 16. A shelf for a printed board, characterized in that a face plate 10 is removably installed on the front upper part of the shelf main body 20.