JPH025373A - Connection structure for connector - Google Patents

Abstract

PURPOSE:To reduce inductance, reduce GND noise, and use all signal pins for signal connection by connecting ground layers of two printed circuit boards together with wide conductors or the like. CONSTITUTION:A conductor 19 at the lower side end face of the first printed circuit board 11 is connected to a ground layer 13 via a through hole 15 and a connection pattern 20. A signal pattern 17 connected to perpendicularly bent pins 22 and 23 of a connector 21 is provided on the surface. On the other hand, a conductor 24 on the second printed circuit board 12 has the spring property and is connected to a ground layer 14 via a through hole 16 and a connection pattern 18. A connector pin 26 is connected to a signal pattern 18. When connector pins 26 and 27 are inserted into the connector 21, the ground layers can be connected together by small inductance along with signal patterns of the first and second printed circuit boards.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a connector connection structure, and particularly to a connector connection structure suitable for use in signal transmission in digital equipment operating at high speed.

[Conventional technology]

FIG. 2 is a diagram showing a conventional connector connection structure. 1st
A printed board 1 is arranged vertically on a second printed board 2, and a connector 3 is provided on the first printed board 1. Further, the bin 4 is connected to the signal pattern, ground, and power supply pattern of the first printed board 1. On the other hand, the bin 5 provided on the second printed board 2
are similarly connected to the signal pattern, ground, and power supply pattern of the second printed circuit board 2.

By inserting the connector 3 into the bin 5, the first and second
The signal pattern, ground, and power supply pattern of the printed board 1.2 are electrically connected to enable signal transmission between the first and second printed boards 1 and 20.

[Problem to be solved by the invention]

As described above, in the conventional connector connection structure, the signal, ground, and power patterns between the first and second printed boards 1.2 are connected via the pins 4.5. This can be expressed as an electric circuit as shown in Figure 3. Figure 3 shows logic gate 6
The case where signals are transmitted from logic gate 8 to logic gate 7 and from logic gate 8 to logic gate 9 is shown. The connector is equivalently represented as an inductance.

Since the pin 4.5 is generally long, the inductance of this pin 4.5 is also large (direct).If this inductance L becomes large, it will cause problems in signal transmission between the first and second printed boards 1.2. .

In other words, assume that the output of the logic gate 6 is changing from LOW level to HIG (high) level, and the logic gate 8 remains stationary.Then, the GND (ground) pin 10 of the connector section A current l flows through the current l. This current l generates a GND noise of V between the grounds of the first and second printed circuit boards 1 and 2. Noise also appears in the output, and the state is equivalent to that of a signal ``■'' being sent to the logic gate 9. Also, as the inductance L increases, the GND noise ``■'' also increases,
Logic gate 9 may also receive erroneous signals.

By connecting the ground using pin 4.5 of the conventional structure, the inductance L increases,
For this reason, the GND noise (2) is also large, which causes the inconvenience that the logic gate 9 may receive an erroneous signal.

The object of the present invention has been made in view of the above-mentioned drawbacks.
It is an object of the present invention to provide a connector connection structure capable of reducing GND noise.

[Means to solve the problem]

In order to achieve the above object, a connector connection structure according to the present invention has a first printed board and a second printed board, and the first printed board is arranged perpendicularly on the second printed board. In the mounting structure for electrically connecting the first and second printed boards, the first printed board is provided at a side end thereof facing the second printed board, and the ground or power source of the first printed board is provided. A first conductor connected to the pattern, and a second conductor provided at a portion of the second printed board corresponding to the first conductor and connected to the ground or power supply pattern of the second printed board. , the first conductor and the second conductor
The conductors of the first and second printed boards are electrically connected, and the signal backs of the first and second printed boards are connected by the connector provided on the front or back surface of the first printed board and the connector provided on the front or back surface of the second printed board. It was designed to connect.

[Effect]

In this way, in the present invention, since the ground layers of the first and second printed boards are connected to each other via a conductor, etc., the connection can be made shorter than before, and the conductor can be made thinner than before. Since the width can be formed wider than that of the pin, the inductance L in this portion can be made extremely small. As a result, GND noise can be made extremely small.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

FIG. 1 is a longitudinal sectional view showing an embodiment of a structure employing a connector connection structure according to the present invention. The first printed board 11 is arranged perpendicularly to the second printed board 12-hi. A ground l13.14 is provided at the center of each of the first and second prints tffllll, 12 in the thickness direction. Moreover, this eleventh second printed board 11.
Through holes 15 and 16 are formed in each of the first and second printed boards 12 in the thickness direction.
A signal pattern 17.18 is provided on the surface of 1.12. Furthermore, the conductor 19 provided on the lower end surface of the first printed board 11 is connected to the ground l1313 via the through hole 15 and the connection pattern 20. Note that a connector 21 is provided on the surface of the first printed board 11.
A pair of bins 22 and 23 from this connector 21 are bent at right angles to form the first pudding) If
It is held through the ll. Note that one of the bins 22 is electrically connected to the signal pattern 17.

On the other hand, the conductor 24 disposed on the surface of the second pudding 12 has spring properties and is connected to the ground layer 14 via the through hole 16 and the connection pattern 25. Further, signal connector pins 2B and 27 are held through the second print (reverse 12), and one connector pin 26 is electrically connected to the signal pattern 18.

In the above configuration, the signal connector pin 26
．． 27 into the connector 21, the signal patterns 17.18 of the first and second printed boards 11.12 are connected, and at the same time, the conductors 19.24 are also connected, and eventually the first
, second printed board II, 12 ground layers 13.14
Comrades are also connected.

〔Effect of the invention〕

As explained above, according to the connector connection structure according to the present invention, the ground layers of the first and second printed boards are connected via a conductor, etc., and this connection method is different from the conventional one. The connection can be made shorter than the method using a bottle. Furthermore, since the conductor can be made wider than the conventional narrow bottle, the inductance L in this portion can be made very small. Therefore, the above-described effect is that the GND noise (2) can be made very small. Furthermore, since the structure does not use signal bins for ground layer connections, all signal bins can be used for signal connections, which is very advantageous in terms of logic design.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of a mounting structure employing a connector connection structure according to the present invention, Fig. 2 is an exploded perspective view of a mounting structure employing a conventional connector connection structure, and Fig. 3 is a GND FIG. 3 is a diagram for explaining the generation of noise. 11...First printed board, 12...Second printed board, 13.14...Ground layer, 15.16...Through hole, 17.18...
...Signal pattern, 19.24...Conductor, 21...Connector. Figure 1 Applicant: NEC Corporation Agent
Patent attorney Umeo Yamauchi Figure 3

Claims (1)

[Claims] It has a first printed board and a second printed board, and the first printed board is arranged vertically on the second printed board,
In the mounting structure for electrically connecting the first and second printed boards, the ground or power pattern of the first printed board is provided at a side end of the first printed board facing the second printed board. a first conductor connected to a second conductor;
a second conductor provided on a portion of the printed board corresponding to the first conductor and connected to the ground or power supply pattern of the second printed board, and the first conductor and the second conductor are electrically connected to each other. and connect the signal patterns of the first and second printed boards by a connector provided on the front or back surface of the first printed board and a connector provided on the front or back surface of the second printed board. A connector connection structure characterized by: