JPH051109Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a printed circuit board mounting structure, particularly to a printed circuit board mounting structure for mounting printed circuit boards back-to-back.

(Prior art) Conventionally, electronic circuit units in which multiple printed circuit boards are connected to the back board by connectors are manufactured so that the height of the back board is the same as the width of the printed board, or the height of the back board is larger. The structure is such that all the connection terminals on the printed circuit board are connected to the connection terminals on the back substrate. Therefore, in order to improve mounting efficiency and simplify connections with related circuits, two electronic circuit units are sometimes placed back-to-back, but the necessary connection between the back boards is achieved by having connectors at both ends. It is connected to the connector on each back board using a cable.

(Problem to be solved by the invention) However, in the conventional printed circuit board mounting structure described above, in order to connect the related printed circuit boards of two electronic circuit units arranged back-to-back, it is necessary to Connections must be made via a connector on the board, which increases the number of connection points, resulting in a corresponding deterioration in connection quality and the need for a large number of parts.

The purpose of this invention is to eliminate the above-mentioned problems, reduce the number of parts, and provide a highly reliable printed circuit board mounting structure by connecting printed circuit boards without intervening connectors on the back board. be.

(Means for Solving the Problems) The present invention uses a mounting structure in which electronic circuit units are installed back-to-back, in which multiple printed circuit boards are connected to the back board by connectors, and the height of the back board is made smaller than the width of the printed board. Then, the printed circuit boards inserted into opposite positions of both electronic circuit units are provided with continuous connectors between the terminals of the portions protruding from the rear substrate, and the two printed circuit boards are directly connected.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side sectional view of one embodiment of the present invention.
This shows a case where two electronic circuit units are arranged back-to-back. In the figure, one electronic circuit unit is constructed by inserting a plurality of printed circuit boards 12 into a shelf frame 1 to which a back board 11 is attached, and the other electronic circuit unit is constructed by inserting a plurality of printed circuit boards 12 into a shelf frame 1 to which a back board 11 is attached.
A plurality of printed circuit boards 2 are attached to the shelf frame 2 to which the board 1 is attached.
2 has been inserted. Therefore, a large number of connection terminals are embedded in each back board, and are connected to the connection terminals (sockets) provided on the inserted printed circuit board.
1 and 21 do not cover the entire back surface of each of the shelf frames 1 and 2, but are both of a size that leaves the upper part of the shelf frame open at a certain height. Therefore, the insertion ends of the inserted printed circuit boards are exposed at the top of the back of each shelf frame, and connection terminals (sockets) are connected between the opposing exposed terminals at both ends.
They are connected by a connecting connector 3 with a holder.

FIG. 2 is a perspective view of the embodiment shown in FIG.
The same reference numerals in the figures indicate the same thing. In this figure, the connecting connector 3 is connected only between two of the plurality of printed circuit boards of both electronic circuit units.
However, it is clear that the corresponding printed circuit boards can be connected by the connecting connector 3.

Incidentally, a notch may be provided in each printed circuit board to determine the fitting position between the direct connector 3 and the printed circuit board, and an insertion guide may be provided in the coupling connector to facilitate insertion and connection.

(Effects of the invention) As explained in detail above, according to the invention, when closely related electronic circuit units are arranged back-to-back and printed circuit boards are connected, such as a line control section and a line correspondence section in data exchange, for example. This has the advantage of being extremely easy to connect to.
Furthermore, since the back surface of the shelf frame is not completely covered with the back substrate, a second effect of good ventilation and cooling can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of one embodiment of the present invention;
The figure is a perspective view of the embodiment of FIG. 1. 1, 2...shelf frame, 3...coupling connector, 11,
21... Back board, 12, 22... Printed board.

Claims (1)

[Scope of utility model registration request] In a mounting structure in which multiple printed circuit boards are connected to the back board by connectors and electronic circuit units are mounted back-to-back, the height of the back board is made smaller than the width of the printed board, and the printed circuit boards inserted into both electronic circuit units are A printed circuit board mounting structure characterized in that a connecting connector is provided in a portion protruding from a back substrate for connecting printed circuit boards that face each other back-to-back using a set of connectors.