JPS63150875A - Connector mechanism for printed circuit board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to a mechanism for connecting a coaxial connector to a printed circuit board, in which the ground of the coaxial line is connected all at once to the housing of the cable connector in order to achieve high-density mounting of the connector. However, by bringing this housing into contact with the ground plate on the printed circuit board to obtain ground continuity between the cable connector and the printed circuit board, the ground pin inside the connector is not required and the connector is made smaller. be.

[Industrial application field]

The present invention relates to the mounting of a coaxial connector on a printed circuit board, and in particular, the mounting of a coaxial connector on a printed circuit board.
The present invention relates to a mechanism for connecting the cable connector to a connector provided on a printed circuit board. With the increasing density of electronic equipment, there is a demand for smaller connectors, and the present invention addresses this demand.

[Conventional technology]

An example of a method for mounting a conventional coaxial connector on a printed circuit board is shown in FIG. Note that connector covers and the like are omitted from the figure. In the figure, 3a is a printed circuit board, 3b is a board-side connector fixed to the printed circuit board, 3C is a cable-side connector, 3d is a sub-printed board connected to the cable-side connector, and 3e is a large number of coaxial lines arranged horizontally. The flat cable 3f shows a cable clamp for fixing the flat cable to the sub-printed board.Each coaxial line of the flat cable 3e has a signal line in the center and a ground line around it through an insulator, as is well known. They are connected to the sub-printed board 3d by soldering, and the wiring patterns 3g on the surface layer and/or inner layer of the sub-printed board 3d (however, the wiring patterns on the surface layer and the inner layer are not shown). through the cable side connector 3
Connected to C. The signal line and the ground line are connected by connecting the cable-side connector 3c of the coaxial connector configured in this way to the board-side connector 3b. Therefore, for example, the connection terminals (not shown) in one row of the cable side connector 3c are used for the signal line, and the connection terminals (not shown) in the other row 0 are used for the ground wire. Similarly, the connection pins 13a in one row of the board side connector 3b are used for signal lines, and the connection pins 13a in the other row
b was used for the ground wire.

[Problem that the invention seeks to solve]

According to the conventional connector mechanism as described above, the cable side connector 3c requires the same number of ground connection terminals as the number of signal lines, and similarly the board side connector 3b requires the same number of ground connection terminals as the number of signal lines. The ground pin 13b was required. In addition, since the sub-printed board 3d was used, there was a problem in reducing the size of the connector, and there was also a problem in terms of price.

[Means for solving problems]

In order to solve such problems, according to the present invention,
This is a mechanism in which a cable consisting of a large number of insulated coaxial lines with a ground line placed around the signal line through an insulator is connected to a cable connector, and the cable connector is connected to a connector provided on a printed circuit board. A cable connector consists of a housing having a conductive part whose outer periphery is metallized at least, and a number of signal terminals provided inside the housing. The wires are connected all at once to the conductive part of the housing, and the connector on the board consists of a number of signal pins set up on the board and a ground plate with holes that avoid these signal pins. Provided is a connector mechanism for a printed circuit board, characterized in that the inner periphery of the hole of the ground plate can be contacted, and each signal terminal can contact each signal pin.

[For production]

The ground wires of each coaxial line of the cable are connected all at once to the conductive part of the housing, and are electrically connected to the ground plate on the printed circuit board through the outer periphery of the housing. The ground terminal is not required.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG. 1 shows a connector mechanism of a printed circuit board of the present invention, where IO is a printed circuit board, and 11 is a printed circuit board. 12 is a signal pin, 20 is a coaxial connector, and 30 is a cable in which a large number of coaxial wires are integrally connected to each other into one cable. FIG. 2 shows the coaxial connector 20 in FIG. 1 in detail, with reference numeral 21 a connector housing, 22 a ground connection plate spring, and 31 a coaxial wire with a terminal treated.

In FIG. 1, a grid-like ground plate 1 is formed on a printed circuit board 10 to form a ground for the printed circuit board 10.
1 is installed, and this ground plate 11 has a substantially rectangular hole 13. A large number of signal pins 12 are provided upright on the printed circuit board 10 inside the hole 13 . Second
In Figures (1) to (d), the tip of the cable 30 is fixed to the main body of the connector 20 by a metal fitting 23 and a screw 24, and a large number of coaxial wires 31 are separated one by one. Each of the separated coaxial lines 31 is a well-known insulated coaxial line having a signal line 31a at the center and a ground line 31b surrounding the signal line via an insulator.

The housing 21 of the connector 20 has at least its outer periphery formed as a metallized conductive portion, and has a leaf spring 22 for ground connection.

As shown in FIG. 2C, the ground wire 31 of each coaxial line 31
b is connected to the housing 21 of the connector 20 via the spring portion 25.
are connected all together to the conductive parts of.

On the other hand, the signal line 31a of each coaxial line 31 is connected one by one to each of a large number of signal terminals 33 provided inside the housing 21 of the connector 20, as shown in the cross section of FIG. 2d. . In addition, in FIG. 2(d), 26 is a connecting body having a spring portion 25, and 27 is an insulator.

The cable connector 20 having such a structure is inserted into the hole 13 of the ground plate 11 on the printed circuit board 10.

As a result, the outer periphery of the housing 21 comes into contact with the ground plate 11 via the leaf spring 22, and the connector 20
Each signal terminal 33 of is contacted to a respective signal pin 12 on the printed circuit board jlilo.

〔Effect of the invention〕

As described above, according to the present invention, since the ground is connected to both the cable side connector and the printed circuit board side connector at the same time, the number of connector terminals can be reduced, and the connection member such as the sub printed circuit board Since the connector mechanism is not required, the connector mechanism can be downsized.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the connector mechanism of the printed circuit board of the present invention, Fig. 2 shows the coaxial connector in Fig. 1 in detail, Fig. 2 a is a front view of the connector, and Fig. 2 is a connector mechanism. FIGS. 2C and 2d are detailed views of the coaxial line connection, and FIG. 3 is a perspective view of the conventional connector mechanism. In the figure, 10 is a printed circuit board, 11 is a ground plate, 12 is a signal pin, 20 is a coaxial connector, 21 is a connector housing, 22 is a ground connection plate spring, 30
31 represents a cable, 31 represents a coaxial line, and 33 represents a signal terminal.

Claims (1)

[Claims] 1. Connect a cable that integrates a large number of insulated coaxial lines with a ground line around the signal line via an insulator to a cable connector, and connect the cable connector to a connector provided on a printed circuit board. A cable connector is a mechanism that consists of a housing having a conductive part whose outer periphery is metallized at least, and a number of signal terminals provided inside the housing, and the signal wire of each coaxial line of the cable is connected to each signal terminal. , the ground wire is connected all at once to the conductive part of the housing, and the connector on the board consists of a large number of signal pins set up on the board and a ground plate with holes that avoid these signal pins. A connector mechanism for a printed circuit board, wherein the outer periphery of the housing can contact the inner periphery of the hole of the ground plate, and each signal terminal can contact each signal pin.