JPH0442997A - Printed board guide rail structure for shelf - Google Patents

Abstract

PURPOSE:To place printed boards of different thicknesses in the same shelf by forming the width of the groove of a guide rail in size adapted for a printed board of largest thickness to be placed in the shelf, and bringing a rotary guide having groove type passages of different widths and intersecting in a cross state into contact with the bottom plate of the shelf and a region between the guide rail of a ceiling plate and a back board. CONSTITUTION:A guide rail 12 having a width (a) of size matched to the thickness of a thicker printed board 16a. Rotary guides 13 are provided on a region between the rear end of the rail 12 and a back board 10 at a bottom plate and a ceiling plate. The guide 13 is formed in shape in which a pin 15 protrudes under a disc 14, and two groove shaped passages 13a, 13b having different thicknesses are intersected in a cross state on the disc 14. The guide 13 is rotated and so positioned that the passage 13a is moved to the extension line of the rail 12, A printed board 16a is introduced into the shelf along the rail 12 as usual.

Description

[Detailed Description of the Invention] [Summary] This invention relates to the structure of a guide rail for guiding each printed board to the back of the shelf when a large number of printed boards are mounted in parallel on the shelf of an electronic device. The purpose of this guide rail is to provide a guide rail structure that uses standardized parts to allow printed boards of different thicknesses to be mounted on the same shelf, and is installed in parallel on the bottom and top plates of the shelf. In a shelf configured such that a large number of printed boards are introduced into the shelf along a groove, and a connector of each printed board is fitted with a backboard side connector provided in the shelf,
The groove width of the guide rail is set to a size that is compatible with the thickest printed board mounted on the shelf, and
A one-turn guide having crisscross groove-shaped passages of different widths is installed in the area between each guide rail and the backboard of the bottom plate and top plate of the shelf.

[Industrial application field]

The present invention relates to a guide rail structure for guiding each printed board to the back of the shelf when a large number of printed boards are mounted in parallel on the shelf of an electronic device.

(Prior Art) In electronic devices, as shown in FIG. The printed board 5 is inserted in the depth direction from 4, and the connector 6 fixed to the rear edge of each printed board 5 is fitted into the connector 2 on the backboard side.

Recent electronic devices have become more densely packaged in order to improve processing speed and downsize the device itself, and the amount of wiring within the printed circuit boards that make up these devices has also become enormous. In order to cope with this, there is a tendency for printed boards to be multi-layered, and their thicknesses are increasing.

On the other hand, contrary to this, printed boards with a small amount of wiring,
The trend is to reduce the number of laminated sheets and reduce the thickness of the sheets, thereby making the electronic device as a whole smaller and lighter. For this reason,
It is increasingly common for multiple types of printed boards with different thicknesses to be installed together on the same shelf.

In such a case, the problem is how to properly fit the connector on the printed board to the connector on the backboard side.

In the case of conventional shelves in which the printed circuit boards were all the same thickness, the connectors on the backboard side were installed at regular intervals. On the other hand, on both the bottom plate and the top plate of the shelf, there are guide rails prepared as separate parts that have the same spacing as the installation spacing of the connectors on the backboard side and have a certain groove width to prevent the printed circuit board from wobbling. It was fixed. Therefore, if the printed board was inserted into the shelf along this guide rail, the connector on the printed board side and the connector on the backboard side would naturally match, allowing for easy fitting. However, when printed boards of various thicknesses coexist, this conventional method cannot be used.

In order to solve these problems, for example, as shown in FIG.
b, and print boards 5a and 5b that fit this groove width.
be inserted into each of the guide rails 3a and 3b, or as shown in FIG. 3c is installed to match the position of the connector 2 on the backboard side, and all printed boards of different thicknesses are inserted into this.

(Problem to be Solved by the Invention) In the case of the method shown in FIG. 5, it is necessary to change the positions of the guide rails 3a, 3b, etc. according to the arrangement order of printed boards in the shelf, making the assembly work complicated. There are drawbacks to it.

In addition, in the case of the method shown in Figure 6, only one type of guide rail is required, so fewer types of parts are needed.
When a thin printed board is used, there is a drawback that it has a large backlash and is difficult to fit with a connector on the backboard side.

The purpose of the present invention is to solve the problems of the prior art and provide a guide rail structure that allows printed boards of different thicknesses to be mounted on the same shelf using a small number of standardized parts. shall be.

[Means to solve the problem]

The purpose of this is to introduce a large number of printed boards into the shelf along the grooves of guide rails provided in parallel on the bottom and top plates of the shelf, and connect the connectors of each printed board to the backboard provided inside the shelf. In a shelf configured to mate with a side connector, the groove width of the guide rail is set to a size that is compatible with the thickest printed circuit board mounted on the shelf, and In the area between each guide rail of the board and the backboard,
This is achieved by the structure of the printed board guide rail, which is characterized by installing a rotating guide having groove-shaped passages of different widths crisscrossing each other.

[Effect]

Before introducing the printed circuit board into the shelf, the rotary guide is rotated around the intersection of its grooves, so that a groove-shaped passage suitable for the thickness of the printed circuit board to be introduced is formed on the extension of the groove of the guide rail. Adjust so that they are arranged. Since the groove width of the guide rail is wider than the thickness of the thickest printed circuit board, the printed board can be easily inserted into any guide rail. In the case of a thin printed board, there may be a lot of wobbling in the area of the guide rail, but once it reaches the rotation guide, its left and right movement is restricted by a groove-shaped passageway with a groove width that matches the thickness of the printed board. is,
Correctly positioned with respect to the connector on the backboard side. This allows for accurate mating of the connectors.

Hereinafter, the present invention will be explained in more detail based on preferred embodiments shown in the drawings.

〔Example〕

FIG. 1 shows two types of printed boards 16a and 1 with different thicknesses.
An example in which the present invention is applied to a shelf accommodating 6b is shown.

Connectors 11 are arranged at predetermined intervals on a backboard 10 fixed to the rear surface of the shelf. Guide rails 12 are installed on the bottom plate and top plate of the shelf corresponding to each connector 11.

One of the features of the present invention is that the groove width a of the guide rail 12 has a dimension that matches the thickness of the thicker printed board 16a. A rotation guide 13 having a shape as shown in FIG. 2 is provided on the bottom plate and the top plate in an area between the rear end of the guide rail 12 and the backboard 10.

The rotation guide 13 has a shape with a pin 15 protruding from the bottom of a disk 14, and the disk 14 is provided with two groove-shaped passages 13a and 13b having different thicknesses and crisscrossing each other. Then, the bin 15 is fitted into a hole (not shown) drilled in the bottom plate of the shelf and is rotatably attached.

One of the groove-shaped passages 13a has the same groove width as the groove width a of the guide rail 12, and the other groove-shaped passage 13b has a groove width that fits the thinner printed board 16b. That is, the groove widths a are different from each other.

The passages 13a and 13b of b have an intersecting shape.

To insert the thicker printed board 16a into the shelf, first rotate the rotation guide 13 and position it so that the passage 13a is on the extension of the guide rail 12. Then, the printed board 16a is introduced into the shelf along the guide rail 12 as usual. The printed board 16a that has reached the rotation guide 12 enters the wider groove-shaped passage 13a and is smoothly fitted into the backboard side connector 11.

To insert the thinner printed circuit board 16b into the shelf, the rotary guide 13 is rotated and positioned so that the passage 13b is on the extension of the guide rail 12. and,
The printed board 16b is introduced into the shelf along the guide rail 12. The printed board 16b is connected to the guide rail 12
Inside, the groove width is too wide, so it is guided with some wobbling, but when it reaches the rotation guide 13, it is guided without wobbling due to the passage 13b that matches the thickness, and is properly mated with the connector 11. I can do it.

The shape of the passage of the rotation guide 13 may be one with a slightly widened entrance as shown in FIG.
As shown in b), one with a taper that gradually narrows toward the center, and as shown in FIG. 3(c), one in which the passage is regulated at intervals of four cylinders can be considered.

In the above example, two types of printed boards with different thicknesses were stored in the shelf, but in order to accommodate even more types of printed boards, it is necessary to combine multiple types of printed boards with different widths. It is sufficient to prepare different types of rotation guides and to use them by replacing them as appropriate.

〔Effect of the invention〕

According to the present invention, there is one guide rail attached to the shelf.
Since only one type is required, parts management becomes easier and labor during assembly can be significantly reduced. Furthermore, by employing a rotating guide, the backlash caused by mismatched groove widths when inserting a printed board is eliminated, and connectors can be mated together smoothly and reliably. Furthermore, even if the thickness of the printed board changes due to a change in function or the addition of a function, the groove width of the guide rail can be quickly adjusted by simply rotating the rotary guide.

[Brief explanation of drawings]

FIG. 1(a) is a plan view showing the main parts of the guide rail structure according to the present invention, FIG. 1(b) is a side view, and FIG. 2 is a general view of the rotating guide used in the present invention. 3(a) to 3(c) are plan views showing other examples of rotating guides; FIG. 4 is a perspective view showing a boat fishing shelf and a printed board mounted thereon; FIG. 5 and 6 are plan views showing the guide rail structure of a conventional shelf. Shelf 0 - Backboard - Connector 2 - Guide rail 3 - Rotation guide 3a, 13b - Groove passage 4 - Disc 5 - Pin 6a, 16b - Printed board Figure 2 (Q) (b ) A plan view showing the essential parts of the guide rail structure of the present invention (FIG. 1 (C)) A plan view showing another example of the rotating guide (FIG. 3) A perspective view showing a shelf and a printed board on which one of the shelves is mounted (FIG. C) FIG. 5 is a plan view showing the guide rail structure of a conventional shelf. FIG. 6 is a plan view showing the guide rail structure of a conventional shelf.

Claims (2)

[Claims] 1. A large number of printed boards are introduced into the shelf along the grooves of the guide rails provided in parallel on the bottom plate and top plate of the shelf, and the connectors of each printed board are connected to the connectors on the backboard side provided inside the shelf. In the shelf configured to fit, the groove width of the guide rail (12) is set to a size that matches the thickest printed board (16a) mounted on the shelf (1), and Each guide rail (16a) on the bottom plate and top plate of the shelf (1)
, 16b) and the backboard (10), a rotating guide (13) having cross-shaped groove-shaped passages (13a, 13b) of different widths is installed. structure. 2. The rotation guide (13) and the guide rail ( 12) The structure of the printed board guide rail according to claim 1, wherein: