JPS6342474Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector for connecting a rigid printed circuit board and a flat cable or flexible printed circuit board.

In general, connectors can be roughly divided into single-pole connectors for single-core cables and multi-pole connectors for multi-core cables, and the former is mainly for connecting shielded cables and coaxial cables, and is used to avoid the weight of noise. Used for lines and lines where high frequency characteristics are important. The latter is used for parts with a large number of lines, for example, parallel input/output lines for line computers that supply several types of power, control lines for devices such as machines, etc. Digitalization in recent years has been accompanied by an increase in the number of bits and a faster bit rate, requiring a connector with good high frequency characteristics even though it is a multi-pole connector. Multi-pole connectors require a lot of effort in terminal processing, and to reduce this, products have been commercialized that use flat cables or flexible printed circuit boards as cables, allowing the fixed side connector to be directly mounted on rigid printed circuit boards. However, the high frequency characteristics are not good, and cross talk between adjacent poles has become a problem. Connectors with good high frequency characteristics include coaxial cable connectors, which are usually called plugs.
It is unipolar. There are multi-pole types for coaxial cables, but the number is less than 10. Even if a coaxial cable connector is single-pole, it takes time and effort to process the terminals, and the high-frequency characteristics are affected by how that process is done. Furthermore, the volume of the cable and connector is large, making it difficult to use more than 10 pins.

The present invention improves the above-mentioned drawbacks and is a connector for connecting flat cables or flexible printed circuit boards and rigid printed circuit boards with little terminal processing. A coaxial structure housing with a conductor in the center of each hole and an insulator embedded around it, and a relay terminal board that connects to the rigid printed circuit board using a strip line eliminates the need for troublesome terminal processing. It is a multi-pole connector that obtains good high frequency characteristics.

FIG. 1 is a perspective view showing one embodiment of the present invention, in which 1 is a flexible printed circuit board or a flat cable (hereinafter simply referred to as a cable), 2 is a pin connector housing, and 3 is a flat cable.
4 is a socket connector housing, 4 is a rigid printed circuit board connection terminal, and 5 is a lock screw to prevent the connector from coming off.

FIG. 2 is a structural diagram of the embodiment shown in FIG. 1, where 6 is a cable-side strip line relay board for connecting the cable 1 and the pin connector housing 2, and 7 is the socket connector housing 3 and the terminal 4. 8 is a pin contact, 9 is a ground pin contact, 10 is a socket contact for receiving the pin contact 8, and 11 is a strip line relay board on the relay board 6. ·line,
12 and 13 are coaxial structures provided within the pin connector housing 2 and socket housing 3, respectively.

The cable 1 has a multilayer structure, and each line forms a strip line. The housings 2 and 3 are made of conductive metal and are provided with the same number of coaxial structures 12 and 13, respectively. A pin contact 8 and a socket contact 10, which serve as conductors and contacts for each pole, are provided at the center of the coaxial structures 12 and 13, and an insulator with good high frequency characteristics, such as Teflon, is embedded around them. The ground is common to all poles and housing 2
The housing 3 is provided with a ground pin contact 9 and a corresponding socket contact to prevent dirt from entering between the housings and easily causing poor contact.

Figure 3 shows the relay board 7 on the rigid printed circuit board side.
In the figure, 14 is a strip line connecting the socket contact 10 and the terminal 4.

With the above configuration, the troublesome terminal processing required when using a coaxial cable can be eliminated, multipolarization can be easily achieved, and the strip lines 11 and 14 of the relay boards 6 and 7 and the strip lines in the cable 1 can be easily connected to each other. The characteristic impedance of the line and the coaxial structures 12 and 13 in the connector housings 2 and 3 can be matched, and good high frequency characteristics can be obtained.

In addition, in this embodiment, the strip line relay board 7 on the rigid printed circuit board side is not used;
A similar effect can be obtained by directly attaching it to a rigid board on which electronic circuits and the like are mounted.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a structural diagram of one embodiment of the present invention, and FIG. 3 is a diagram showing a relay terminal board having terminals for making connections on the rigid board side. In the figure, 1 is a flexible printed circuit board (flat cable), 2 is a pin connector housing, 3 is a socket connector housing, 4 is a rigid printed circuit board connection terminal, and 5 is a
is a lock screw, 6 is a strip line relay board on the cable side, 7 is a strip line relay board on the rigid printed circuit board side, 8 is a pin contact, 9 is a ground pin contact, 10 is a socket contact, 11 and 14 is the relay board 6
and 7, 12 and 13 are the coaxial structures of the connector housings 2 and 3.

Claims (1)

[Scope of utility model registration request] A coaxial connector that connects a rigid printed circuit board and a flat cable or flexible printed circuit board, where multiple round holes are drilled in conductive metal, a conductor is placed in the center of each hole, and an insulator is embedded around it. a structural housing;
Connection to rigid printed circuit board side and flat
A connector characterized by having a relay terminal board that connects to a cable or a flexible printed circuit board using a strip line.