JPH09180801A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent cross-talk without the solid-crossing of connection portions and provide a miniaturized connector with high productibility. SOLUTION: Plural contact parts 1 are arranged nearly in parallel. One side of adjacent each pair of the contacts 1 is connected to a connection portion 3 at an upper end. Therefore, the cross-talk current generated at a counterpart side connector and the cross-talk current at the contact part 1 is opposite- phased, and the cross-talk current is neutralized each other in a connection state with the contact part 1. In addition, since cross-talk restriction function is realized at the contact part 1, the connection portion does not need to have the cross-talk restriction function, the length of the connection portion 3 can be shortened, and the connection portion 3 leads to miniaturization.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector used mainly for signal transmission to prevent crosstalk.

[0002]

2. Description of the Related Art In recent years, the amount of information to be transmitted has dramatically increased in the field of telecommunications, so that high-speed signal transmission is required. Since it is necessary to use a high-frequency signal for high-speed transmission, the amount of crosstalk between signal lines due to electrostatic coupling becomes large. That is, in order to prevent deterioration of signal quality, it is necessary to reduce the amount of crosstalk, and in order to perform high-speed signal transmission, it is necessary to prevent crosstalk not only in the signal line but also in the connector. To be done.

By the way, a connector generally used for communication has a structure in which two connectors (plug and jack) are connected to each other, and a contact portion connected to the other one and a terminal portion connecting an external electric wire (signal line). A connecting portion for internally connecting the contact portion and the terminal portion is formed of a conductor, and these conductors have portions arranged in parallel with each other in one plane. In such a parallel portion, the crosstalk current flows because the capacitive components between the conductors that transmit other signals to each other become unbalanced. Further, since the signal type allocation and the positional relationship are fixedly determined by the standard in the contact section, there is a problem that the degree of freedom in design is low and it is difficult to reduce crosstalk in the contact section.

Therefore, in this type of connector, it is considered to arrange the connecting portion so that the crosstalk between the terminal portions of the plug and the jack is reduced in a state where the plug and the jack are connected to each other. In this case, the connector on the plug side is smaller in size than the connector on the jack side, and it is difficult to change the arrangement of the connection portion. It is common to devise the arrangement. Further, as described above, there is a restriction on the arrangement of the contact portion and the degree of freedom of arrangement of the terminal portion is also low. Therefore, attempts have been made to reduce crosstalk depending on the arrangement relation of the connection portions.

For example, the electric connector shown in FIG. 6 disclosed in Japanese Patent Laid-Open No. 6-84562 is an 8-pole modular jack type connector, in which a contact portion 1 and an external electric wire which come into contact with the modular plug type connector are connected. It has a configuration in which a part of the connecting portion 3 provided between the terminal portion 2 to be connected is crossed. Specifically, when the contact portion 1 is numbered from the front (left side of the figure),
, And the connecting portions 3 connected to the contact portions 1 of each pair cross each other. The main purpose of this configuration is to prevent crosstalk between pairs of pairs.

[0006]

By the way, in the above-mentioned structure, since a part of the connecting portion 3 arranged on a substantially one plane is crossed three-dimensionally, there is a vertical relation of the connecting portion 3 at the intersecting portion. There is a restriction on the assembly order.
In addition, a bending process of a complicated shape is required due to the three-dimensional intersection. Therefore, the assemblability and the workability are inferior, and as a result, there is a problem that the productivity cannot be improved.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connector with high productivity by preventing crosstalk without having a crossover site. To provide.

[0008]

In order to achieve the above object, the present invention provides a plurality of contact portions arranged substantially parallel to each other so as to make electrical contact with the contact portion of a mating connector, and an external electric wire. A plurality of terminal portions connected to each other, a plurality of connecting portions electrically connecting the corresponding contact portions and the respective terminal portions, and an insulating material holding the contact portions, the terminal portions and the connecting portions. With a base consisting of
One of at least a pair of adjacent contact parts is characterized in that one end side in the longitudinal direction is connected to the connecting part and the other end side is connected to the connecting part at the other end side in the longitudinal direction.

According to this structure, one of the pair of adjacent contact portions is connected to the connecting portion at one end side in the longitudinal direction, and the other is connected to the connecting portion at the other end side in the longitudinal direction. As a result, the crosstalk current generated in the mating connector and the crosstalk current generated in the contact portion have opposite phases, and as a result, the crosstalk current is offset and reduced. Moreover, since crosstalk is suppressed by changing the position at which the connecting portion is connected to the contact portion, there is no crossing site, complicated bending is unnecessary, and restrictions are placed on the assembly sequence. There is no such thing, resulting in high productivity. Further, since crosstalk can be suppressed without increasing the distance between the connecting portions, as a result, the distance between the connecting portions can be reduced, which leads to downsizing.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A modular jack type connector will be shown below as an embodiment, but the embodiment shown here does not prevent the technical idea of the present invention from being applied to another type of connector. As shown in FIG. 5, the connector is an 8-pole modular jack, and is made of an insulating material in which a terminal base 10b is continuously and integrally extended behind a connection base 10a having a plug insertion opening 11 on the front surface. The base 10 is provided. One end of a lever 12 is pivotally attached to the connection base 10a, and the lever 12 opens and closes between a position where it covers the upper surface of the terminal base 10b and a position where the upper surface of the terminal base 10b is opened. In addition, the holding member 1 is provided on the terminal base 10b.
3 is movably arranged in the vertical direction, and the holding member 13 is connected to the lever 12 so that the holding member 13 can move in the vertical direction in association with opening and closing of the lever 12. The mechanism for converting the rotation of the lever 12 into the vertical movement of the holding member 13 has been applied for in advance and is not the subject matter of the present invention, so the description thereof is omitted here.

A connection recess 14 is formed in the connection base 10a, and an opening surface of the connection recess 14 serves as a plug insertion port 11. A modular plug type connector is inserted into the connection recess 14 through the plug insertion port 11, and a plurality of (here, eight) electrically connected to the contact portions provided on the modular plug type connector. Contact part 1
Are arranged parallel to each other in the connection recess 14. Each contact part 1 is a linear spring and is arranged at substantially equal intervals. In addition, a plurality of terminal portions 2 electrically connected to the respective contact portions 1 are provided upright on the terminal base 10b. Each terminal portion 2 is a plate-shaped terminal piece 2a (see FIG.
(Refer to FIG. 3), each terminal piece 2a is formed with a pressure contact slit 2b having an open upper end. As is well known, the terminal piece 2a is formed by press-fitting an insulation-coated wire into a slit 2
By press-fitting into b from the upper end, the insulating coating is cut at both side edges of the pressure contact slit 2b, and the core wire is sandwiched between both side edges of the pressure contact slit 2b.

On the other hand, the holding member 13 is formed hollow and has a partition wall 13a so that the electric wires connected to the terminal pieces 2a can be separately held. An opening window (not shown) is formed in a portion of the holding member 13 corresponding to the terminal piece 2a, and when the lever 12 is closed, a protrusion (not shown) provided on the lower surface side of the lever 12 is opened. By pressing the electric wire through the window, the electric wire can be pushed into the press contact slit 2b.

By the way, the wiring allocation of the contact portion 1 is defined in ANSI / EIA / TIA-568 (commercial building communication wiring standard), and as shown in FIG. When the part 1 is arranged so as to project from the top to the bottom, terminal numbers are assigned in the order of from left to right. At this time, the color code of the electric wire electrically connected to each contact part 1 is defined as follows. To be done. In other words, white-orange, orange, white-
Green, blue, white-blue, green, white-brown, and brown (white-X (X: orange, green, blue, brown) are colored in two colors, white and X, over the entire length. Represents that).
In addition, the electric wires L _{1 to} L ₈ connected to the terminal portion 2 are twisted pair wires, and the electric wires L _{1 to} L ₈ of the contact portion 1 ,.
The connection relationship is defined so that each pair becomes. That is, a pair of twisted-pair wires is a wire in which the insulating coating is a single color and a white ground wire in which the insulating coating is white and two colors of other colors are twisted together. The colors that are not the same are adopted as the colors of the pair of color lines. For example, the white line is 2 for white and green
When it is a color, the color line is paired with the green one. In addition to such color code specifications for electric wires, the near-end crosstalk amount between pairs of wires is also specified.

Here, since the pair of is arranged between the pair of, if the connecting portions 3 are formed on one plane, the capacitance components between the connecting portions 3 become unbalanced. Become. That is, the crosstalk current easily flows between the pair and the pair, and the crosstalk current increases especially when the frequency of the signal becomes high. Also, for other pairs, the crosstalk amount increases as the frequency increases.

According to the present invention, however, as shown in FIGS. 1 to 3, one of the adjacent contact portions 1 is continuous with the connecting portion 3 at the lower end and the other is continuous with the connecting portion 3 at the upper end.
Here, the odd-numbered contact portion 1 has the connecting portion 3 continuous at the upper end, and the even-numbered contact portion 1 has the connecting portion 3 continuous at the lower end. That is, part of the contact portion 1 projects rearward and upward from the lower front end of the connection recess 14, and the remaining contact portion 1 projects forward and downward from the upper rear end of the connection recess 14. As shown in FIG. 2, a locking portion 15 is provided in the connection recess 14 to lock the contact portion 1 at a fixed position against the spring force by locking the tip of each contact portion 1. There is.

A connecting portion 3 continuous with the upper end of the contact portion 1.
Is arranged about several mm above the connecting portion 3 continuous to the lower end of the contact portion 1. The connecting portion 3 and the terminal portion 2 are
A bridging portion 4 is formed to connect with. That is, the conductor portion shown in FIG. 1 is integrally formed by punching out an elastic metal plate having a thickness of about 0.4 mm, and the contact portion 1, the terminal portion 2, the connecting portion 3, and the bridging portion are formed. In the conductor provided with 4, the bent portions are formed at the connecting portion between the connecting portion 3 and the bridging portion 4 and at the bridging portion between the bridging portion 4 and the terminal portion 2. However, since this bent portion is only bent at a right angle, complicated bending work is unnecessary.

As described above, by making the connection relations of the connection portions 3 to the paired contact portions 1 opposite to each other, the crosstalk current generated inside the modular plug type connector and the crosstalk current generated inside the connector. Since and can have opposite phases, the crosstalk current can be manipulated in the connection state of both connectors, and as a result, the crosstalk amount is reduced.

By the way, the terminal portions 2 are arranged in two rows in front and rear as is clear from FIG. That is, each two terminal portions 2 forming a pair are arranged in the front and rear. With this arrangement, the front and rear terminal cormorants 2 can partially overlap each other in the left-right direction. The width can be narrowed, and as a result, the width of the connector can be narrowed. Also, the front and rear terminal pieces 2
It suffices to separate a so that an insulation distance can be secured, and since each terminal piece 2a has a small thickness, the size of the base 10 in the front-rear direction does not increase significantly even if it is arranged in two rows in the front-rear direction. . Further, since the adjacent connection portions 3 are vertically separated from each other, the distance between the adjacent connection portions 3 can be made relatively large even if the left and right distances between the adjacent connection portions 3 are made relatively small. As a result, the overall left and right dimensions can be made relatively small, which leads to downsizing. In addition, since the contact part 1 has most of the function of suppressing the crosstalk, the function of suppressing the crosstalk hardly depends on the connection part 3, and as a result, the length of the connection part 3 can be shortened. This is also possible, which also leads to miniaturization of the connector.

In the above-described embodiment, the connection portion 3 is connected to the upper end of the odd-numbered contact portion 1, but the connection portion 3 is connected to the lower end of the odd-numbered contact portion 1 and the even-numbered contact portion. You may make it the connection part 3 continue to the upper end of 1.

[0020]

According to the present invention, a plurality of contact portions arranged substantially parallel to each other so as to make electrical contact with a contact portion of a mating connector, and a plurality of terminal portions connected to an external electric wire are provided. At least a pair of adjacent connecting parts, each of which has a plurality of connecting parts that electrically connect the corresponding contact part and each terminal part, and a base made of an insulating material that holds the contact parts, the terminal parts, and the connecting parts. One of the contact parts has one end in the longitudinal direction connected to the connecting part, and the other has the other end in the longitudinal direction connected to the connecting part. Therefore, the crosstalk current generated in the mating connector and the contact part occur in the contact part. There is an advantage that the crosstalk current has a phase opposite to that of the crosstalk current, and as a result, the crosstalk current is offset and reduced. Moreover, since crosstalk is suppressed by changing the position at which the connecting portion is connected to the contact portion, there is no crossing site, complicated bending is unnecessary, and restrictions are placed on the assembly sequence. Therefore, there is an advantage that high productivity can be obtained as a result. In addition, crosstalk can be suppressed without increasing the distance between the connection parts, and since the crosstalk suppression function does not depend on the connection part by providing the contact part with most of the crosstalk suppression function, It is possible to shorten the length of the connection portion between the terminal portion and the terminal portion. in this way,
Since the space occupied by the connection part can be reduced,
It has an advantage that it leads to downsizing as a whole.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conductor portion according to an embodiment of the present invention.

2A and 2B are cross-sectional views of the same as above.

FIG. 3 is a plan view of a conductor portion of the above.

FIG. 4 is an explanatory diagram showing an arrangement of contact portions of the same.

FIG. 5 is a perspective view of the same.

FIG. 6 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

 1 Contact part 2 Terminal part 3 Connection part 4 Bridge part 10 Base

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 17, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

By the way, the terminal portions 2 are arranged in two rows in front and rear as is clear from FIG. That is, each two terminal portions 2 forming a pair are arranged in the front and rear. With this arrangement, the front and rear terminal portions 2 can partially overlap each other in the left-right direction, so that the left and right sides of the space in which the terminal portions 2 are arranged can be compared to when the terminal portions 2 are arranged in one row. The width can be narrowed, and as a result, the width of the connector can be narrowed. Also, the front and rear terminal pieces 2
It suffices to separate a so that an insulation distance can be secured, and since each terminal piece 2a has a small thickness, the dimension of the base 10 in the front-rear direction does not increase significantly even if it is arranged in two rows in the front-rear direction. . Further, since the adjacent connection portions 3 are vertically separated from each other, the distance between the adjacent connection portions 3 can be made relatively large even if the left and right distances between the adjacent connection portions 3 are made relatively small. As a result, the overall left and right dimensions can be made relatively small, which leads to downsizing. In addition, since the contact part 1 has most of the function of suppressing the crosstalk, the function of suppressing the crosstalk hardly depends on the connection part 3, and as a result, the length of the connection part 3 can be shortened. This is also possible, which also leads to miniaturization of the connector.

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

[Figure 5]

Front page continued (72) Inventor Masahiko Amano 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Ltd. (72) Inventor Shinji Morino 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Works Ltd. (72) Inventor Hirotoshi Okuno 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works Co., Ltd. (72) Inventor, Takaro Sase, 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Works, Ltd.

Claims (1)

[Claims] 1. A plurality of contact portions arranged substantially in parallel so as to make electrical contact with a contact portion of a mating connector, a plurality of terminal portions connected to an external electric wire, and respective contacts corresponding to each other. A plurality of connecting portions for electrically connecting the terminal portion and each terminal portion, respectively, and a base made of an insulating material for holding the contact portion, the terminal portion and the connecting portion,
One of at least a pair of adjacent contact parts is connected to the connecting part at one end side in the longitudinal direction, and the other is connected to the connecting part at the other end side in the longitudinal direction.