JPH06151010A - Connector for high speed signal - Google Patents

Abstract

PURPOSE:To reduce inconsistency of impedance and mutual interference between signals by providing structure for bringing a signal contact into linear contact and for shielding the surroundings of the signal contact when a connector is connected. CONSTITUTION:A projection 11 is formed in the center of an opening of a connector on a cable side. Signal contacts 12 and grounding contacts 13 are disposed face to face each other and alternately arranged in the lateral direction on the upper and lower surfaces of the projection 11. Shield plates 14 are provided on both sides of the signal contact 12. One end of the shield plate 14 is brought into contact with the grounding contact 13, to thus generate a ground potential. The signal contact 12 is surrounded and shielded by the shield plates 14 and the grounding contact 13. A signal line and a ground line of a connection cable are connected to the other end of each of the signal contact 12 and the grounding contact 13, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high speed signal connector, and more particularly to a high speed signal connector for connecting a cable (for example, a ribbon cable) composed of a plurality of coaxial signal lines for a high speed signal to a printed board.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing an example of a conventional high-speed signal connector mounted on the printed board side. As can be seen from the figure, a plurality of L-shaped pin contacts 41 are simply arranged. One end side of this pin contact 41 contacts the contact of the connector on the cable side and the other end side thereof is a printed board. Are bound to. Here, as shown in FIG. 5, the contact 42 of the cable side connector has a spring property and contacts the pin contact 41 of the board side connector. Further, in order to reduce mutual interference between signal lines, a ground line is connected to a pin contact adjacent to a pin contact that connects the signal lines.

[0003]

As described above, the conventional board-side connector has a structure in which the pin contacts are simply arranged. Further, as shown in FIG. 5, the contact of the conventional cable-side connector is a pin. Since it is bent in an S shape at the contact portion with the contact, impedance discontinuity occurs. Further, even if the pin contact adjacent to the pin contact of the signal line becomes the ground, it is impossible to sufficiently reduce the mutual interference between the signals. Therefore, there is a problem that the signal quality is deteriorated due to the disturbance of the signal waveform and the crosstalk.

An object of the present invention is to provide a high speed signal connector capable of reducing signal quality deterioration due to signal waveform disturbance and crosstalk.

[0005]

A high-speed signal connector of the present invention comprises a cable side connector connected to a cable composed of a plurality of coaxial signal lines and a board side mounted on a printed board and coupled to the cable side connector. In the high-speed signal connector including a connector, the cable-side connector has a protrusion provided at the center of the opening and an inner conductor of the coaxial signal line connected to the other end alternately on the upper and lower surfaces of the protrusion. A plurality of first signal contacts and a plurality of first signal contacts arranged alternately on the upper and lower surfaces of the protrusion so as to face the signal contacts, and connected to the other end of the outer conductor of the coaxial signal line, respectively. A ground contact and a plurality of first shield plates arranged so as to partition both sides of the signal contact; The connector includes an opening into which the protrusion is inserted, and a plurality of second signal contacts arranged around the inside of the opening so as to face and contact the first signal contact. A plurality of second ground contacts arranged to face and contact the first ground contact around the inside of the opening, and the first ground contacts arranged behind the signal contacts. And a plurality of second shield plates that come into contact with the second shield plate. Further, when the cable side connector and the board side connector are coupled, the first signal contact and the second signal contact are formed so as to come into linear contact with each other.

[0006]

The present invention will be described below with reference to the drawings.

FIG. 1 is a view showing an embodiment of a cable side connector of the present invention, and FIG. 2 is a view showing an embodiment of a board side connector to be combined with the cable side connector shown in FIG. Here, in FIGS. 1 and 2, (a) is a plan view, (b) is a front view, and (c) is a cross-sectional view taken along the line AA. 3 is a perspective view showing a connection state between the cable side connector shown in FIG. 1 and the ribbon cable.

First, the cable side connector will be described with reference to FIGS.

As shown in FIG. 3, the ribbon cable 31 connected to the cable side connector is formed by arranging a plurality of signal lines covered with an outer conductor in a strip shape. In addition, each outer conductor includes a ground wire for wiring.

As shown in FIG. 1, a protrusion 11 is provided in the lateral direction at the center of the opening of the cable side connector, and the signal contacts 12 and the ground are provided on both upper and lower surfaces of the protrusion 11. Contacts 13 are alternately arranged in the lateral direction so as to face each other. The signal lines and the ground lines of the ribbon cable 31 are connected to the other ends of the signal contacts 12 and the ground contacts 13, respectively.

Further, the shield plate 14 is arranged so as to partition both sides of the signal contact 12, and one end of the shield plate 14 is brought into contact with the ground contact 13 to be at the ground potential. Therefore, each signal contact 12 is shielded by being surrounded by the ground contact 13 and the shield plate 14 in a U-shape.

Next, as shown in FIG. 2, the board-side connector has an opening 21 into which the protrusion 11 of the cable-side connector is inserted, and a signal contact is provided around the inside of the opening 21. 22, a ground contact 23, and a shield plate 24 are arranged. Here, the shield plate 24 is provided in parallel with the rear surface of the rear surface of each signal contact 22.

Here, when the cable side connector and the board side connector are connected, the signal contact 12, the ground contact 13 and the shield plate 14 of the cable side connector are respectively the signal contact 22 and the ground of the board side connector. The contact 23 and the shield plate 24 are in contact with each other. Also,
Since the signal contacts 12 and 22 are in linear contact with each other to form a microstrip line, it is possible to maintain the impedance continuity and set it to a predetermined characteristic impedance. Further, since the shield plate 14 contacts the shield plate 24, each signal contact 1
2, 22 can be shielded by being surrounded by the ground contacts 13 and 23 and the shield plates 14 and 24 in a square bracket shape, and mutual interference between signals can be reduced.

[0014]

As described above, according to the present invention, when the cable-side connector and the board-side connector are coupled, both signal contacts make a linear contact, and
By providing a structure in which each signal contact is surrounded by the “B” shape and shielded by the ground contact and the shield plate, mutual interference between signals can be reduced and impedance mismatch can be reduced. Therefore, it is possible to reduce signal quality deterioration due to signal waveform disturbance and crosstalk.

[Brief description of drawings]

1A and 1B are views showing an embodiment of a cable-side connector of the present invention, in which FIG. 1A is a top view, FIG. 1B is a front view, and FIG. 1C is a sectional view taken along the line AA. Shows.

2A and 2B are views showing an embodiment of a board-side connector to be combined with the cable-side connector shown in FIG. 1, in which FIG. 2A is a top view, FIG. 2B is a front view, and FIG. The cross-sectional view when cut at is shown.

FIG. 3 is a perspective view showing a connection state between the cable side connector shown in FIG. 1 and a ribbon cable.

FIG. 4 is a perspective view showing an example of a connector mounted on the printed board side of a conventional high-speed signal connector.

5 is a diagram showing a contact state between a pin contact of the board side connector shown in FIG. 4 and a contact of a conventional cable side connector.

[Explanation of symbols]

 11 Cable-side connector protrusion 12, 22 Signal contact 13, 23 Ground contact 14, 24 Shield plate 21 Board-side connector opening 31 Ribbon cable

Claims (2)

[Claims] 1. A high-speed signal connector comprising a cable-side connector connected to a cable composed of a plurality of coaxial signal lines, and a board-side connector mounted on a printed board and coupled to the cable-side connector, wherein the cable side is provided. The connector includes a protrusion provided in the center of the opening, a plurality of first signal contacts arranged alternately on the upper and lower surfaces of the protrusion, and connected to the other end of the inner conductor of the coaxial signal line, respectively. A plurality of first ground contacts, which are alternately arranged on the upper and lower surfaces of the protrusion so as to face the signal contacts, and to which the outer conductors of the coaxial signal lines are respectively connected to the other ends, and both sides of the signal contacts. A plurality of first shield plates arranged so as to partition the board; the board-side connector has an opening into which the protrusion is inserted. A plurality of second signal contacts arranged around the inside of the opening so as to face and contact the first signal contact; and a plurality of second ground contacts around the inside of the opening. A plurality of second ground contacts that are arranged so as to face and contact the contacts, and a plurality of second shield plates that are arranged behind the signal contacts and are in contact with the first shield plate. A connector for high-speed signals, comprising: 2. The high-speed signal connector according to claim 1, wherein the first signal contact and the second signal contact are straight when the cable-side connector and the board-side connector are joined together. A high-speed signal connector, which is formed so as to come into contact with each other.