JP2002246121A - Connector for differential signal transmission - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent crosstalk between a plurality of signal contact pairs without increasing the arrangement interval of the signal contact pairs. SOLUTION: Each of them is arranged at a constant interval.
A plurality of signal contact pairs 110 and 120 including the signal contacts 111 are provided. The plurality of signal contact pairs are arranged at a predetermined interval on a straight line, and the arrangement direction of the two signal contacts 111 alternates between a direction orthogonal to the arrangement direction and the same direction as the arrangement. And an insulator 150 arranged and held in the housing. Of the plurality of contact pairs, the intermediate position of two adjacent signal contact pairs 110 in the group in the arrangement direction orthogonal to the arrangement and the adjacent two in the group in the same arrangement direction as the arrangement.
A plurality of grounding contacts located in the middle of one signal contact pair 120 and held by insulator 150
130,140. These form the connector 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for transmitting a differential signal, and more particularly to a connector for transmitting a differential signal between two circuits.

[0002]

2. Description of the Related Art When a plurality of differential signals are transmitted between two circuits, a plurality of signal contact pairs using two signal contacts for one differential signal are arranged and held in an insulator. A differential signal transmission connector is used. Such a differential signal transmission connector of the related art
Are shown in FIGS. 2A and 2B. In this first example,
It is configured as a pair of male and female, including a connector 100x and a connector 200x that are fitted to each other, and details thereof are as follows.

First, each of the connectors 100x has
A plurality of signal contact pairs 1 each including two male signal contacts 111 arranged at a fixed interval D1.
10 and the plurality of signal contact pairs 110 are arranged on a preset straight line at a predetermined interval D2, and the arrangement direction of each of the two signal contacts 111 is determined by the signal contact pair 110. And an insulator 150x that is arranged and held in a direction orthogonal to the arrangement direction.

[0004] Each of the connectors 200x has
Connector 1 that is arranged at a fixed interval (D1) and fits
A plurality of signal contact pairs 210 including two female signal contacts 211 corresponding to and in contact with the two signal contacts 111 of the plurality of signal contact pairs 110 of 00x, and the plurality of signal contacts The pair 210 is connected to its two signal contacts 211
Are two signal contacts 111 of each of a plurality of signal contact pairs 110 of the connector 100x to be fitted.
The two signal contacts 2 are arranged on a straight line at predetermined intervals so as to make contact and contact.
The insulator 250x is arranged and held so that the arrangement direction of 11 is orthogonal to the arrangement direction of the signal contact pairs 210.

[0005] In the first example, the distance D1 between the two signal contacts 111 of the signal contact pair 110 is:
The plurality of signal contact pairs 110 are arranged and arranged to be smaller than the arrangement interval D2, so that crosstalk between adjacent signal contact pairs 110 is reduced. Further, the adjacent signal contact pair 110
There is also an example in which the conductors are arranged and arranged so as to be smaller than the gap between the conductors (for example, see FIG. 1 of JP-A-11-185886).

[0006] In the connector 200x, a plurality of signal contact pairs 210 each composed of two signal contacts 211 are arranged and arranged on the insulator 250x as in the connector 100x.

In the first example, as the arrangement interval D2 of the plurality of signal contact pairs 110 (210) increases,
Although the crosstalk between the adjacent signal contact pairs 110 (210) can be reduced, the overall size increases accordingly. Therefore, as shown in FIGS. 3A and 3B, the arrangement direction of the two signal contacts 111 (211) is changed in the direction orthogonal to the arrangement direction of the plurality of signal contact pairs while keeping the arrangement interval. (110, 210) and those in the same direction as the array (12
0, 220) are alternately repeated, and
There is a second example in which an arrangement in the same direction as the arrangement is arranged and arranged on the central axis of the arrangement in an arrangement orthogonal to the arrangement so as to further reduce crosstalk (for example, Japanese Patent Application Laid-Open No. -185886).

In the second example, adjacent signal contact pairs 110 (210) and signal contact pairs 120
(220) are orthogonal to each other, and (120, 220) in the same direction as the array are arranged and arranged on the central axis of the array (110, 210) orthogonal to the array. Since the crosstalk between them can be made almost zero, and the distance between the arrangements orthogonal to the arrangement and between the arrangements in the same direction as the arrangement is doubled,
Crosstalk between them can be significantly reduced.

[0009]

In the above-described conventional differential signal transmission connector, in the first example, two signal contacts 111 (21) are arranged at regular intervals.
1), a plurality of signal contact pairs 110 (21)
0) are arranged on a straight line at regular intervals, and the direction in which the two signal contacts 111 (211) are arranged is orthogonal to the direction in which the signal contact pairs 110 (210) are arranged. 150x (25
0x).
The problem is that the crosstalk between adjacent signal contact pairs 110 (210) increases, and if the distance between adjacent signal contact pairs is increased so as to reduce the crosstalk, the overall size increases. Without widening the arrangement interval, the arrangement direction of each of the two signal contacts 111 (211) can be changed in the direction orthogonal to the arrangement direction of these signal contact pairs and in the same direction as the arrangement. Are alternately arranged and arranged in the second example. In the second example, the crosstalk between adjacent ones in the direction orthogonal to the arrangement and those in the same direction as the arrangement is substantially zero. The distance between adjacent ones in the direction orthogonal to the array and between those in the same direction as the array is doubled,
Although the crosstalk can be reduced, the crosstalk corresponding to the interval still remains, which is an important problem particularly in a connector handling a high-frequency signal such as high-speed transmission.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, it is an object of the present invention to prevent crosstalk between a plurality of signal contact pairs without widening the arrangement interval of the plurality of signal contact pairs and to maintain good high-frequency characteristics. It is an object of the present invention to provide a differential signal transmission connector capable of transmitting a differential signal.

[0011]

SUMMARY OF THE INVENTION A differential signal transmission connector of the present invention mates with a mating mating connector to electrically connect two circuits and to transmit a differential signal between the two circuits. A differential signal transmission connector for transmitting, having the following configurations. (A) a plurality of signal contact pairs each including two signal contacts arranged at a fixed interval; (b) the plurality of signal contact pairs are predetermined on a predetermined straight line. The two signal contacts are arranged so that the direction perpendicular to the direction of arrangement of the plurality of signal contact pairs and the same direction as the arrangement are alternately arranged. (C) In the arrangement of the plurality of signal contact pairs,
An intermediate position between two adjacent signal contact pairs in the signal contact pair group in the arrangement direction orthogonal to the arrangement direction, and two adjacent signal contacts in the signal contact pair group in the same arrangement direction as the arrangement direction A plurality of grounding contacts arranged at intermediate positions of the pair and held by the insulator;

The plurality of grounding contacts may correspond to signal contact pair groups in an arrangement direction perpendicular to the arrangement direction, and may be arranged between two adjacent signal contact pairs between two adjacent signal contact pairs. A plurality of signal contact pairs arranged at the respective positions and arranged in the same arrangement direction as the arrangement direction, and arranged at an intermediate position between two adjacent signal contact pairs on the arrangement line; Each of the contacts for use has a configuration that is formed of the same material and the same shape and size as the signal contacts included in each of the plurality of signal contact pairs.

Further, the differential signal transmission connector and a mating connector mating with the differential signal transmission connector are combined to form a pair of differential signal transmission connectors. The mating connector has the following configuration. (A) Each of the plurality of signal contact pairs of the differential signal transmission connector, which are arranged at regular intervals and include two signal contacts correspondingly connected to the two signal contacts. A plurality of signal contact pairs of the differential signal transmission connector, the two signal contacts of which are fitted with the two signal contacts, respectively. The two signal contacts are arranged on a straight line at predetermined intervals so as to correspond to and contact the two signal contacts, and the arrangement direction of each of the two signal contacts corresponds to the arrangement direction of the plurality of signal contact pairs. , Orthogonal directions,
An insulator that is arranged and held so that the same direction as the arrangement is alternately held. (C) In the arrangement of the plurality of signal contact pairs,
An intermediate position between two adjacent signal contact pairs in the signal contact pair group in the arrangement direction orthogonal to the arrangement direction, and two adjacent signal contacts in the signal contact pair group in the same arrangement direction as the arrangement direction A plurality of ground contacts, corresponding to and connected to a plurality of ground contacts of the differential signal transmission connector which is disposed at an intermediate position of the pair and held by the insulator to be fitted;

In the mating connector, each of the plurality of grounding contacts is formed of the same material and in the same shape and size as the signal contacts included in each of the plurality of signal contact pairs. , The configuration.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a first embodiment of the present invention, two circuits are electrically connected by fitting with a mating connector, and a differential signal is transmitted between the two circuits. A differential signal transmission connector having the following components. (A) a plurality of signal contact pairs each including two signal contacts arranged at a fixed interval; (b) the plurality of signal contact pairs are predetermined on a predetermined straight line. The two signal contacts are arranged so that the direction perpendicular to the direction of arrangement of the plurality of signal contact pairs and the same direction as the arrangement are alternately arranged. (C) In the arrangement of the plurality of signal contact pairs,
An intermediate position between two adjacent signal contact pairs in the signal contact pair group in the arrangement direction orthogonal to the arrangement direction, and two adjacent signal contacts in the signal contact pair group in the same arrangement direction as the arrangement direction A plurality of grounding contacts arranged at an intermediate position of the pair and held by the insulator;

With such a configuration and structure,
The grounding contacts can be arranged without widening the arrangement interval of the plurality of signal contact pairs, and thus without increasing the overall size, so that crosstalk between the signal contact pairs can be prevented, and high-speed transmission can be performed. In such a case, an effect that good high-frequency characteristics can be maintained can be obtained.

Also, the mating mating connector which is mated with the differential signal transmission connector to form a pair also has the same arrangement as the differential signal transmission connector for the arrangement of the plurality of signal contact pairs. By providing a structure and a structure in which a plurality of grounding contacts are provided so as to be in contact with a plurality of grounding contacts of the differential signal transmission connector, the differential signal transmission connector (the mating partner Cross-talk between signal contacts (including connectors) can be prevented.

[0018]

Next, embodiments of the present invention will be described with reference to the drawings. FIGS. 1A and 1B are a perspective view and a plan view of a pair of differential signal transmission connectors before the connector is fitted, showing an embodiment of the present invention. This embodiment mates with each other to provide an electrical connection between the two circuits,
A pair of differential signal transmission connectors comprising two differential signal transmission connectors 100 and 200 for transmitting a differential signal between these two circuits. The details of the connectors 100 and 200 are as follows.

First, the connector 100 has two male signal contacts 1 arranged at regular intervals.
11, a plurality of signal contact pairs 110,
120 (the difference between 110 and 120 depends on the difference in the arrangement direction of the two signal contacts 111 with respect to the arrangement direction, as will be described later) and the plurality of signal contact pairs 110 and 120 are set to a preset The two signal contacts 111 are arranged on the line at a predetermined interval, and the arrangement direction of each of the two signal contacts 111 is perpendicular to the arrangement direction of the signal contact pairs 110 and 120.
An insulator 150 arranged and held so as to be alternately repeated between the same direction as the arrangement and a signal contact pair 110 in an arrangement direction orthogonal to the arrangement direction in the arrangement of the plurality of signal contact pairs 110 and 120. Two adjacent signal contact pairs 110 of a group
And a plurality of grounding contacts arranged and held by the insulator 150 at an intermediate position between two adjacent signal contact pairs 120 in a group of the signal contact pairs 120 in the same arrangement direction as the arrangement direction thereof. 130 and 140 (130 for the signal contact pair 110 and 140 for the signal contact pair 120).

Each of the connectors 200 is arranged at regular intervals, and is connected to the two signal contacts 111 of the plurality of signal contact pairs 110 and 120 of the mating connector 100 in a corresponding manner. A plurality of signal contacts 210 and 220 (210 corresponds to the above-mentioned 110 and makes a contact connection, and 220 corresponds to the above-mentioned 120 and makes a contact connection).
And a plurality of signal contacts 210, 220, and a plurality of signal contact pairs 110, 1 of the connector 100 into which the respective two signal contacts 211 are fitted.
The two signal contacts 2 are arranged in a straight line at predetermined intervals so as to correspond to and contact the two signal contacts 111 of each of the two.
11, the signal contact pair 210,
An insulator 250 arranged and held so as to be alternately repeated between a direction orthogonal to the arrangement direction and the same direction as the arrangement direction, and an arrangement of the plurality of signal contact pairs 210 and 220 in the arrangement. Two adjacent signals in the group of the signal contact pairs 210 in the arrangement direction orthogonal to the direction, the intermediate position between the two adjacent signal contact pairs 210, and the group of the signal contact pairs 220 in the same arrangement direction as the arrangement direction. A plurality of ground contacts 230, 240 corresponding to the plurality of ground contacts 130, 140 of the connector 100, which are disposed at the intermediate position of the contact pair 220, are held by the insulator 250, and are fitted, and are in contact therewith. Configuration and structure.

The ground contacts 130 and 140 of the connector 100 are connected to the signal contacts 11 thereof.
The grounding contacts 130 having the same material, shape and dimensions as those of No. 1 and arranged at an intermediate position of the signal contact pairs 110 in the arrangement direction orthogonal to the arrangement direction are opposed to each other between two adjacent signal contact pairs 110. The grounding contact 140 which is arranged at each intermediate position of the signal contacts 111 to be arranged and which is arranged at the intermediate position of the signal contact pair 120 in the same arrangement direction as the arrangement direction is connected to two adjacent signal contacts on the arrangement line. It is arranged at an intermediate position of the pair 120.

The ground contacts 230 and 240 of the connector 200 are connected to the signal contacts 21.
1 has the same material, shape, and dimensions as those of the connector 100, and the arrangement relationship is the same as that of the connector 100. Further, these grounding contacts 130, 140, 230, and 240 are provided on the board on which the connectors 100 and 200 are mounted, and on the connector 10
It is connected to the ground terminal of the system through a cable connected to 0,200.

With such a configuration and structure,
A plurality of signal contact pairs 110, 120, 210, 2
The crosstalk component for the group of signal contact pairs 110 and 210 in the arrangement direction orthogonal to the arrangement direction of the 20 is:
Ground contact 13 arranged for the group
0, 230, crosstalk between the signal contact pairs 110, 210 in this group can be prevented, and the signal contact pairs 120 in the same arrangement direction as the arrangement direction of the plurality of signal contact pairs. , 2
Since the crosstalk components in the 20 groups are absorbed by the ground contacts 140 and 240 provided for the group, it is possible to prevent crosstalk between the signal contact pairs 120 and 220 in this group. Yes, and naturally, the crosstalk between the signal contact pairs 110 and 210 in the arrangement direction orthogonal to the arrangement direction and the signal contact pairs 120 and 220 in the same arrangement direction as the arrangement direction is almost zero. Thus, crosstalk between the plurality of signal contact pairs 110, 120, 210, 220 can be prevented, and good high-frequency characteristics can be secured.

In this embodiment, the example of the differential signal transmission connector including the two connectors 100 and 200 fitted to each other has been described.
Even if each is in a single state, the operation and effect do not change.

[0025]

As described above, according to the present invention, a plurality of signal contact pairs are alternately arranged in a direction orthogonal to the arrangement direction and alternately in the same direction as the arrangement. In the signal contact pair group arranged in the insulator and orthogonal to each other, a ground contact is arranged at an intermediate position between two adjacent signal contact pairs, and the signal contact pair in the same direction is arranged. In the group, a grounding contact is arranged at a middle position between two adjacent signal contact pairs in the group, whereby the grounding contact absorbs a crosstalk component generated in each group. Of the group within the group without increasing the spacing between the arrays and thus without increasing the overall dimensions. Stork course, it is possible to prevent crosstalk between the plurality of signal contacts each other being arranged, it is possible to ensure excellent high-frequency characteristics, there is an effect that.

[Brief description of the drawings]

FIG. 1 is a perspective view and a plan view from the mating surface side of a pair of differential signal transmission connectors before being mated, showing one embodiment of the present invention.

FIG. 2 is a perspective view of a first example of a conventional pair of differential signal transmission connectors before fitting and a plan view seen from a fitting surface side.

FIG. 3 is a perspective view of a second example of a conventional pair of differential signal transmission connectors before fitting and a plan view seen from the fitting surface side.

[Explanation of symbols]

 100, 100x, 100y Connector 110 Signal contact pair 111 Signal contact 120 Signal contact pair 130, 140 Grounding contact 150, 150x, 150y Insulator 200, 200x, 200y Connector 210 Signal contact pair 211 Signal contact 220 Signal contact pair 230, 240 Ground Contacts 250,250x, 250y insulator

Claims (5)

[Claims] 1. A differential signal transmission connector for mating with a mating mating connector to electrically connect two circuits and transmitting a differential signal between the two circuits. A differential signal transmission connector having a configuration. (A) a plurality of signal contact pairs each including two signal contacts arranged at a fixed interval; (b) the plurality of signal contact pairs are predetermined on a predetermined straight line. The two signal contacts are arranged so that the direction perpendicular to the direction of arrangement of the plurality of signal contact pairs and the same direction as the arrangement are alternately arranged. (C) In the arrangement of the plurality of signal contact pairs,
An intermediate position between two adjacent signal contact pairs in the signal contact pair group in the arrangement direction orthogonal to the arrangement direction, and two adjacent signal contacts in the signal contact pair group in the same arrangement direction as the arrangement direction A plurality of grounding contacts arranged at an intermediate position of the pair and held by the insulator; 2. A method according to claim 1, wherein the plurality of ground contacts correspond to a signal contact pair group in an arrangement direction orthogonal to the arrangement direction, and a middle of the signal contacts opposed to each other between two adjacent signal contact pairs. 2. The difference according to claim 1, wherein the signal contact pair group arranged at each of the positions and having the same arrangement direction as the arrangement direction is arranged at an intermediate position between two adjacent signal contact pairs on the arrangement line. Connector for transmitting motion signals. 3. The difference according to claim 1, wherein each of the plurality of grounding contacts is formed of the same material and the same shape and size as the signal contacts included in each of the plurality of signal contact pairs. Connector for transmitting motion signals. 4. The differential signal transmission connector according to claim 1 and a mating connector mating with the differential signal transmission connector are combined with each other, and the mating connector is configured as follows. A pair of differential signal transmission connectors characterized by having each configuration. (A) Each of the plurality of signal contact pairs of the differential signal transmission connector, which are arranged at regular intervals and include two signal contacts correspondingly connected to two signal contacts. A plurality of signal contact pairs of the differential signal transmission connector into which each of the two signal contacts is fitted. The two signal contacts are arranged on a straight line at a predetermined interval so as to correspond to and contact the signal contacts, and the arrangement direction of each of the two signal contacts is aligned with the arrangement direction of the plurality of signal contact pairs. , Orthogonal directions,
An insulator that is arranged and held so that the same direction as the arrangement is alternately held. (C) In the arrangement of the plurality of signal contact pairs,
An intermediate position between two adjacent signal contact pairs in a signal contact pair group in an arrangement direction orthogonal to the arrangement direction, and two adjacent signal contacts in a signal contact pair group in the same arrangement direction as the arrangement direction A plurality of grounding contacts, corresponding to and connected to a plurality of grounding contacts of the differential signal transmission connector arranged and held at the insulator and fitted to the middle position of the pair; 5. The mating connector, wherein each of the plurality of grounding contacts is formed of the same material and in the same shape and dimensions as the signal contacts included in each of the plurality of signal contact pairs. , Claim 4
A differential signal transmission connector forming the pair described.