WO2023277092A1

WO2023277092A1 - Differential communication connector and board connector

Info

Publication number: WO2023277092A1
Application number: PCT/JP2022/026060
Authority: WO
Inventors: 宗二朗正田; 主税佐分; 佳吾高橋
Original assignee: 株式会社オートネットワーク技術研究所; 住友電装株式会社; 住友電気工業株式会社
Priority date: 2021-07-02
Filing date: 2022-06-29
Publication date: 2023-01-05
Also published as: JP2023007538A

Abstract

The present invention suppresses a decrease in EMC characteristics.　This differential communication connector comprises a plurality of female-side housings (16) arranged side-by-side parallel to a mounting surface (31S) of a circuit board (31), and a plurality of female terminal fittings (22) accommodated in the plurality of female-side housings (16). A pair of the female terminal fittings (22) accommodated in one female-side housing (16) constitutes one differential pair transmission path (29), and the pair of the female terminal fittings (22) constituting the one differential pair transmission path (29) are arranged side-by-side in a direction perpendicular to the mounting surface (31S).

Description

Differential communication connector and board connector

The present disclosure relates to a differential communication connector and a board connector.

Patent Document 1 discloses a connector for differential communication in which a plurality of pairs of contact elements forming a differential pair are accommodated in a housing. In this differential communication connector, two contact elements forming one contact element pair are arranged side by side in the left-right direction. A plurality of contact element pairs are also arranged side by side in the left-right direction.

Patent Document 2 discloses a board connector including a housing having a hood and a plurality of terminals attached to the housing. Each terminal is made of a rod-shaped material, and has a shape in which a connection terminal portion and a mounting terminal portion are connected in an L shape. The connection terminal portion penetrates the partition wall portion of the housing, and the tip portion of the connection terminal portion is accommodated in the receptacle. The mounting terminal portion extends downward from the rear end of the connection terminal portion behind the partition wall portion and is connected to the horizontal circuit board.

Japanese Patent Publication No. 2015-528625 Japanese Patent Application Laid-Open No. 2020-009708

In the connector disclosed in Patent Document 1, when noise is emitted from one contact element pair of adjacent contact element pairs, the other contact element pair is affected differently by the noise. there is That is, one of the contact elements forming the other contact element pair is close to the noise source, while the other contact element is far from the noise source. This difference in distance from the noise source in one contact element pair increases crosstalk and degrades EMC characteristics.

When trying to make the board connector described in Patent Document 2 multipolar, a plurality of connection terminal portions are arranged in a vertical direction perpendicular to the circuit board with a space therebetween, and a plurality of mounting terminals are arranged perpendicular to the partition wall portion. They are arranged in the front-to-rear direction with a space between them. In this case, the length of the terminal whose connection terminal portion is far from the circuit board and whose mounting terminal is far from the partition wall portion is longer than the length of the terminal whose connection terminal portion is close to the circuit board and whose mounting terminal is close to the partition wall portion. . Therefore, it is necessary to prepare a plurality of types of terminal materials having different lengths, which increases the material cost.

Further, when the substrate connector described in Patent Document 2 is used as a connector for differential communication after being made multipolar, the connection terminal portions are arranged vertically and the mounting terminal portions are arranged forward and backward to form a differential pair. can be considered. In this case, the two terminals forming a differential pair have different lengths of connection terminal portions and different lengths of mounting terminal portions. Therefore, in one differential pair, the transmission length of the transmission line formed by one terminal is different from the transmission length of the transmission line formed by the other terminal, and there is a problem that the EMC characteristics are degraded.

The differential communication connector of the present disclosure has been perfected based on the circumstances described above, and aims to suppress the deterioration of EMC characteristics. The board connector of the present disclosure has been completed based on the above circumstances, and aims to suppress material costs, or to suppress deterioration of EMC characteristics while suppressing material costs.

The differential communication connector of the first disclosure includes:
a plurality of female housings arranged parallel to the mounting surface of the circuit board;
a plurality of female terminal fittings accommodated in the plurality of female housings,
a pair of said female terminal fittings housed in said one said female housing constitutes one differential pair transmission line,
The pair of female terminal fittings constituting one differential pair transmission line are arranged so as to be aligned in a direction perpendicular to the mounting surface.

The board connector of the second disclosure includes:
a board-side housing attached to the mounting surface of the circuit board;
a plurality of first male terminal fittings having an elongated shape as a whole and attached to the board-side housing;
a plurality of second male terminal fittings having an elongated shape as a whole and attached to the board-side housing;
The length of the first male terminal fitting and the length of the second male terminal fitting are set to the same dimension.

According to the first disclosure, deterioration of EMC characteristics can be suppressed. According to the second disclosure, it is possible to suppress the material cost, or suppress the deterioration of the EMC characteristics while suppressing the material cost.

FIG. 1 is a perspective view showing a state in which a board-side module and a harness-side module are separated from each other in the differential communication connector of the first embodiment. FIG. 2 is a perspective view showing a state in which the outer housing and the inner module are separated in the harness side module. FIG. 3 is a perspective view showing a state in which the inner module of the harness-side module is disassembled in the assembled direction. FIG. 4 is a front cross-sectional view of a differential communication connector. FIG. 5 is a side cross-sectional view of a differential communication connector. FIG. 6 is a front view of the board-side module. FIG. 7 is a back view of the board-side module. 8 is a cross-sectional view taken along the line AA of FIG. 7. FIG. 9 is a cross-sectional view taken along the line BB of FIG. 7. FIG. FIG. 10 is a perspective view of a first male terminal fitting and a second male terminal fitting that constitute a differential pair transmission line. FIG. 11 is a front view of a first male terminal fitting and a second male terminal fitting that constitute a differential pair transmission line. FIG. 12 is a side view of a first male terminal fitting and a second male terminal fitting that constitute a differential pair transmission line. FIG. 13 is a graph showing the ANEXT of the example model to which the present Example 1 is applied and the conventional model. FIG. 14 is a graph showing ANEXTDC of the example model to which the present Example 1 is applied and the conventional model. FIG. 15 is a graph showing AFEXT of the embodiment model to which the present embodiment 1 is applied and the conventional model. FIG. 16 is a graph showing AFEXTDC of an example model to which the present Example 1 is applied and a conventional model.

[Description of Embodiments of the Present Disclosure]
First, the embodiments of the present disclosure will be listed and described.
The differential communication connector of the first disclosure includes:
(1) A single female housing comprising a plurality of female housings arranged parallel to a mounting surface of a circuit board, and a plurality of female terminal fittings accommodated in the plurality of female housings. The pair of female terminal fittings housed in the two constitute one differential pair transmission line, and the pair of female terminal fittings constituting one differential pair transmission line are arranged in a direction perpendicular to the mounting surface. They are arranged side by side. According to the configuration of the present disclosure, when noise is generated from one of the female terminal fittings, the pair of female terminal fittings accommodated in the female side housing different from the noise source are affected by the noise to the same extent. receive. Since crosstalk is reduced between the pair of female terminal fittings forming the differential pair transmission line, deterioration of EMC characteristics is suppressed.

(2) It is preferable that the pair of female terminal fittings forming one differential pair transmission line is connected to a twisted pair wire forming one differential cable. According to this configuration, the EMC characteristics of the differential pair transmission line including the female terminal fitting and the differential cable are improved.

(3) A board-side housing attached to the circuit board, and a plurality of male terminal fittings attached to the board-side housing and configuring the differential pair transmission line, thereby forming one differential pair transmission line. It is preferable that the pair of male terminal fittings to be connected are set to have the same length. According to this configuration, in the differential pair transmission line, the transmission line formed by one male terminal fitting and the transmission line formed by the other male terminal fitting have the same length, so that the EMC characteristics are excellent. there is

(4) In (3), the pair of male terminal fittings constituting the differential pair transmission line are arranged in parallel with the tabs arranged in a direction perpendicular to the circuit board and in the direction in which the female housing is arranged. It is preferable to have substrate connection portions arranged so as to be aligned in parallel. According to this configuration, since a plurality of substrate connection portions can be arranged in a row, there is freedom in designing the layout of the circuit and mounted parts in the area other than the connection area of the substrate connection portion on the mounting surface of the circuit board. High degree.

The board connector of the second disclosure includes:
(5) a board-side housing attached to a mounting surface of a circuit board; a plurality of first male terminal fittings having an elongated shape as a whole and attached to the board-side housing; A plurality of second male terminal fittings are attached to the housing, and the length of the first male terminal fittings and the length of the second male terminal fittings are set to the same dimension. According to this configuration, the material cost of the first male terminal fitting and the second male terminal fitting can be suppressed. When the first male terminal fitting and the second male terminal fitting form a differential pair transmission line, EMC characteristics are improved.

(6) The board-side housing has a plate-shaped terminal holding portion perpendicular to the circuit board, and the first male terminal fitting includes a first terminal main body penetrating through the terminal holding portion in the front-rear direction. and a first board connecting portion extending from the rear end of the first terminal main body and connected to the circuit board outside the board-side housing, wherein the second male terminal fitting is adapted to hold the terminal. and a second board connecting portion extending from the rear end of the second terminal body outside the board-side housing and connected to the circuit board. The first board connecting part and the second board connecting part have the same size and shape, and the plurality of first board connecting parts and the plurality of second board connecting parts are arranged in a row. preferably. According to this configuration, there is a high degree of freedom in designing the layout of the circuit and mounted components in the area of the mounting surface of the circuit board other than the connection area of the first board connecting portion and the second board connecting portion.

(7) In (6), the front end portion of the first terminal body portion and the front end portion of the second terminal body portion are arranged side by side with a space therebetween in a height direction orthogonal to the circuit board, The first terminal main body portion has a first inclined portion that is inclined so as to approach the circuit board as it goes rearward, and the second terminal main body portion is inclined so as to be farther away from the circuit board as it goes rearward. It is preferable to have a second inclined portion. According to this configuration, the height difference between the front end portion of the first terminal main body portion and the front end portion of the second terminal main body portion is absorbed by the first inclined portion and the second inclined portion. The total length of the first male terminal fitting can be shortened compared to the case where the rear end portion of the first terminal main body portion and the first board connecting portion are connected by the bent portion at right angles. The total length of the second male terminal fitting can be shortened compared to the case where the rear end portion of the second terminal main body portion and the second board connecting portion are connected by the bent portion at right angles.

(8) In (7), the first terminal main body portion has a first connecting portion that extends rearward from the rear end of the first inclined portion at an obtuse angle and is connected to the first board connecting portion at a right angle. Preferably, the second terminal main body portion has a second connecting portion that extends rearward from the rear end of the second inclined portion at an obtuse angle and is connected to the second board connecting portion at a right angle. . If the second inclined portion and the second substrate connecting portion are directly connected, the second inclined portion and the second substrate connecting portion form an acute angle, and noise is likely to occur at the portion connecting the acute angle, which is preferable. No. According to the above configuration, since the second connecting portion is interposed between the second inclined portion and the second board connecting portion, the second male terminal fitting does not have a portion forming an acute angle, thereby reducing noise. It can suppress the occurrence.

(9) In (7) or (8), the first terminal main body includes: a first base portion wider than the first inclined portion and continuing to a front end of the first inclined portion; and a first press-fitting portion that protrudes forward and is press-fitted into the board-side housing from behind. and a second press-fitting portion having a shape projecting forward from the second base and being press-fitted into the substrate-side housing from behind, wherein the first press-fitting and the first inclined portion are displaced from each other in the width direction, and the second press-fitting portion and the second inclined portion are preferably arranged to be displaced from each other in the width direction. . According to this configuration, since the first inclined portion is displaced in the width direction with respect to the first press-fitting portion, when the first press-fitting portion is press-fitted into the board-side housing, the first tilt portion of the rear surface of the first base portion can be pushed into the substrate-side housing. A jig can be used to press the area immediately behind the press-fit portion. Since the second inclined portion is displaced in the width direction with respect to the second press-fitting portion, when the second press-fitting portion is press-fitted into the substrate-side housing, the area of the rear surface of the second base portion immediately behind the second press-fitting portion is can be pressed with a jig.

[Details of the embodiment of the present disclosure]
[Example 1]
A first embodiment embodying the differential communication connector and board connector of the present disclosure will be described with reference to FIGS. 1 to 16. FIG. The present invention is not limited to these exemplifications, but is indicated by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims. In the first embodiment, the XX direction in FIGS. 1, 2, 5, 8 to 10 and 12 is defined as the front-back direction. The YY direction in FIGS. 1, 2, 4, 6 to 11 is defined as the horizontal direction. The left-right direction and the width direction are used synonymously. The ZZ direction in FIGS. 1, 2, 4 to 7, 10 to 12 is defined as the vertical direction. The directions appearing in FIGS. 1, 2, 4 to 7, and 10 to 12 are defined as upward and downward as they are.

<Differential communication connector>
The differential communication connector of the first embodiment includes a harness side module 10 having a harness connector 11 and a board side module 30 having a board connector 32 . The harness connector 11 and the board connector 32 are fitted together with their fitting surfaces facing each other. As for the front-rear direction in the harness-side module 10, the fitting direction of the harness connector 11 to the board connector 32 is defined as the front. 1 and 2 is the front of the harness-side module 10 . Regarding the front-rear direction in the board-side module 30, the direction in which the board connector 32 is fitted into the harness connector 11 is defined as the front. That is, the diagonal upper right in FIG. 1 and the right in FIG. 5 are the front.

<Harness side module 10>
As shown in FIGS. 1 and 2 , the harness-side module 10 includes one harness connector 11 and four differential cables 25 . The harness connector 11 includes an outer housing 12 made of synthetic resin and an inner module 14 . The outer housing 12 is in the shape of a rectangular tube with both front and rear sides open. The outer housing 12 has a flat shape in which the width dimension in the horizontal direction is larger than the height dimension in the vertical direction. A housing space 13 for housing the inner module 14 is formed inside the outer housing 12 .

As shown in FIG. 3, the inner module 14 includes one inner housing 15 and four pairs of female terminal fittings 22. As shown in FIGS. 2 to 4, the inner housing 15 is constructed by assembling four female side housings 16 and one cover 17. As shown in FIGS. As shown in FIG. 3, the female housing 16 is elongated in the front-rear direction and has a box shape with open sides. The female housing 16 has a front wall portion 18 and a pair of upper and lower terminal accommodating chambers 20 partitioned by a partition wall portion 19 . The front wall portion 18 is formed with a pair of upper and lower through holes 21 that allow the front surface of the female housing 16 to communicate with the pair of terminal accommodating chambers 20 individually.

As shown in FIGS. 3 and 5, the female terminal fitting 22 has an elongated shape in the front-rear direction. The female terminal fitting 22 has a rectangular tubular portion 23 arranged in the front end region of the female terminal fitting 22 and a crimping portion 24 formed at the rear end portion of the female terminal fitting 22 . A pair of female terminal fittings 22 are individually accommodated in the pair of upper and lower terminal accommodating chambers 20 .

The differential cable 25 includes a twisted pair wire 26 obtained by twisting two covered wires 27 together, and a sheath 28 surrounding the twisted pair wire 26 . The crimping portions 24 of the pair of female terminal fittings 22 are individually connected to the front ends of the two covered wires 27 forming the twisted pair wire 26 . The twisted pair wire 26 and the pair of female terminal fittings 22 connected to the twisted pair wire 26 constitute one differential pair transmission line 29 . A pair of female terminal fittings 22 forming one system of differential pair transmission line 29 are accommodated in one female housing 16 .

The four female side housings 16 containing the female terminal fittings 22 are assembled so as to line up in the left-right direction. At the time of assembly, as shown in FIG. 3, each female side housing 16 is turned so that the terminal accommodating chambers 20 are open upward, and the pair of terminal accommodating chambers 20 are separated from each other in each female side housing 16. A pair of female terminal fittings 22 constituting a dynamic pair transmission line 29 are accommodated. Four female side housings 16 containing female terminal fittings 22 are assembled so as to be vertically stacked. A cover 17 closes the opening of the uppermost female housing 16 .

By assembling the four female side housings 16 and the cover 17, the inner module 14 with four pairs of female terminal fittings 22 accommodated in the inner housing 15 is constructed. The assembled inner module 14 is accommodated in the accommodation space 13 of the outer housing 12 with the four female side housings 16 aligned in the left-right direction. In the inner module 14, a pair of female terminal fittings 22 forming one system of differential pair transmission line 29 are arranged with an interval therebetween in the vertical direction. The four differential pair transmission lines 29 are arranged in the horizontal direction. The direction in which the pair of female terminal fittings 22 constituting one system of differential pair transmission lines 29 are arranged and the direction in which the four systems of differential pair transmission lines 29 are arranged are orthogonal to each other.

<Board-side module 30>
As shown in FIGS. 1, 4, 6, and 7, the board-side module 30 includes a circuit board 31 and one board connector 32. As shown in FIG. The circuit board 31 is arranged horizontally with the mounting surface 31S facing upward. The board connector 32 is attached to the circuit board 31 while being placed on the mounting surface 31S. The board connector 32 includes a board-side housing 33 , four first male terminal fittings 40 and four second male terminal fittings 50 .

The board-side housing 33 is a single component having a plate-shaped terminal holding portion 34 perpendicular to the mounting surface 31S and a rectangular tube-shaped hood portion 35 projecting forward from the outer peripheral edge of the terminal holding portion 34 . As shown in FIG. 7, the terminal holding portion 34 has four first press-fit holes 36 arranged in a row at the same height and spaced in the left-right direction, and four first press-fit holes 36 at the same height and spaced in the left-right direction. Four second press-fit holes 37 are formed so as to be arranged in a line with a space between them. The first press-fit hole 36 is arranged at a position higher than the second press-fit hole 37 . The first press-fit hole 36 and the second press-fit hole 37 are arranged side by side with a space therebetween in the vertical direction.

One first male terminal fitting 40 and one second male terminal fitting 50 form a pair and constitute one system of differential pair transmission line 29 . The first male terminal fitting 40 and the second male terminal fitting 50 have portions of the same shape and portions of different shapes. The first male terminal fitting 40 and the second male terminal fitting 50 are formed by bending an elongated metal bar member as a whole. The overall length of the first male terminal fitting 40 and the overall length of the second male terminal fitting 50 are the same.

<First male terminal fitting 40>
As shown in FIGS. 10-12, the first male terminal fitting 40 is a single component having a first terminal body portion 41, a first tab 46, and a first board connecting portion 47. As shown in FIGS. The first terminal body portion 41 has a first base portion 42 , a first press-fitting portion 43 , a first inclined portion 44 and a first connecting portion 45 . In a plan view of the first male terminal fitting 40 in a direction orthogonal to the mounting surface 31S, the first base portion 42 has a rectangular plate shape with a width dimension in the left-right direction that is greater than the dimension in the front-rear direction.

The first press-fit portion 43 is a rod-shaped portion protruding forward at the same height from the front edge of the first base portion 42 . In a plan view, the first press-fit portion 43 has a width dimension smaller than that of the first base portion 42 and is arranged at a position deviated to the right of the center of the first base portion 42 in the width direction. The first tab 46 linearly protrudes forward from the front end of the first press-fit portion 43 . The first press-fit portion 43 and the first tab 46 are arranged at the same position in the height direction and the width direction, and extend linearly in the front-rear direction.

The first inclined portion 44 is a bar-shaped portion extending obliquely downward and rearward from the rear edge of the first base portion 42 . In a side view of the first male terminal fitting 40 in the horizontal direction, the first base portion 42 and the first inclined portion 44 are connected at an obtuse angle. In plan view, the first inclined portion 44 has a width dimension smaller than that of the first base portion 42 and is arranged at a position deviated leftward from the center of the first base portion 42 in the width direction. The first press-fitting portion 43 and the first inclined portion 44 are arranged at positions offset to the left-right opposite side from the center position of the first base portion 42 in the left-right direction. In the width direction, the first inclined portion 44 and the first connecting portion 45 are arranged at positions shifted to the left with respect to the first tab 46 .

The first connecting portion 45 is a bar-shaped portion extending rearward from the rear end of the first inclined portion 44 and is positioned lower than the first base portion 42 . The first connecting portion 45 maintains a constant height over its entire length. In a side view, the first inclined portion 44 and the first connecting portion 45 are connected at an obtuse angle. The first inclined portion 44 and the first connecting portion 45 are arranged at the same position in the width direction and linearly extend in the front-rear direction in plan view. By interposing the first inclined portion 44 between the first base portion 42 and the first connecting portion 45, the first base portion 42 and the first connecting portion 45 have a positional relationship with a height difference in side view. there is In plan view, the first inclined portion 44 and the first connecting portion 45 are displaced to the left with respect to the first press-fitting portion 43 and the first tab 46 .

The first board connecting portion 47 is L-shaped in side view. The first board connecting portion 47 has a first leg portion 48 extending in the vertical direction, and a first mounting portion 49 extending rearward in a cantilever manner from the lower end of the first leg portion 48 . The first leg portion 48 extends downward from the rear end of the first connecting portion 45 . In a side view, the first connecting portion 45 and the first leg portion 48 are connected at right angles. The first connecting portion 45 and the first mounting portion 49 are arranged at the same position in the width direction and linearly extend in the front-rear direction in plan view.

<Second male terminal fitting 50>
As shown in FIGS. 10-12, the second male terminal fitting 50 is a single component having a second terminal body portion 51, a second tab 56, and a second board connecting portion 57. As shown in FIGS. The second terminal body portion 51 has a second base portion 52 , a second press-fitting portion 53 , a second inclined portion 54 and a second connecting portion 55 . In a plan view, the second base portion 52 has a rectangular plate shape with a width dimension in the left-right direction that is larger than the dimension in the front-rear direction. The first base portion 42 and the second base portion 52 are portions having the same shape and size.

The second press-fit portion 53 is a bar-shaped portion protruding forward at the same height from the front edge of the second base portion 52 . In a plan view, the first press-fit portion 43 has a width dimension smaller than that of the first base portion 42 and is arranged at a position deviated leftward from the center of the first base portion 42 in the width direction. The first press-fit portion 43 and the second press-fit portion 53 are portions having the same shape and size. The second tab 56 linearly protrudes forward from the front end of the second press-fit portion 53 . The second press-fit portion 53 and the second tab 56 are arranged at the same position in the height direction and the width direction, and extend linearly in the front-rear direction. The first tab 46 and the second tab 56 are portions having the same shape and size.

The second inclined portion 54 is a bar-shaped portion extending obliquely upward and rearward from the rear edge of the second base portion 52 . In a side view, the second base portion 52 and the second inclined portion 54 are connected at an obtuse angle. In plan view, the second inclined portion 54 has a smaller width dimension than the second base portion 52 and is arranged at a position deviated to the right from the center of the second base portion 52 in the width direction. The second press-fitting portion 53 and the second inclined portion 54 are arranged at positions offset from the center position in the left-right direction of the second base portion 52 to the left-right opposite side. In the width direction, the second inclined portion 54 and the second connecting portion 55 are arranged at positions shifted to the right with respect to the second tab 56 .

The first inclined portion 44 and the second inclined portion 54 are portions having the same shape in plan view and the same length dimension in plan view. The first inclined portion 44 and the second inclined portion 54 are portions having the same length dimension when viewed from the side. In a side view, the first inclined portion 44 and the second inclined portion 54 have the same angle of inclination with respect to the horizontal direction, but the directions of the gradients are opposite to each other.

The second connecting portion 55 is a bar-shaped portion extending rearward from the rear end of the second inclined portion 54 and is positioned higher than the second base portion 52 . The second connecting portion 55 maintains a constant height over its entire length. In a side view, the second inclined portion 54 and the second connecting portion 55 are connected at an obtuse angle. The second inclined portion 54 and the second connecting portion 55 are arranged at the same position in the width direction and linearly extend in the front-rear direction in plan view. By interposing the second inclined portion 54 between the second base portion 52 and the second connecting portion 55, the second base portion 52 and the second connecting portion 55 have a positional relationship with a height difference in side view. In plan view, the second inclined portion 54 and the second connecting portion 55 are shifted to the right with respect to the second press-fitting portion 53 and the second tab 56 . The first connecting portion 45 and the second connecting portion 55 are portions having the same shape and dimensions.

The second board connection portion 57 is L-shaped in side view. The second board connection portion 57 has a second leg portion 58 extending in the vertical direction, and a second mounting portion 59 extending rearward in a cantilever manner from the lower end of the second leg portion 58 . The second leg portion 58 extends downward from the rear end of the second connecting portion 55 . In a side view, the second connecting portion 55 and the second leg portion 58 are connected at right angles. The second connecting portion 55 and the second mounting portion 59 are arranged at the same position in the width direction and linearly extend in the front-rear direction in plan view. The first board connecting portion 47 and the second board connecting portion 57 are parts having the same shape and size.

<Board connector 32>
By assembling the first male terminal fittings 40 and the second male terminal fittings 50 to the board-side housing 33, the board connector 32 is constructed. The first male terminal fitting 40 is assembled to the terminal holding portion 34 from the rear side of the board-side housing 33 and is held in the assembled state by press-fitting the first press-fitting portion 43 into the first press-fitting hole 36 . The second male terminal fitting 50 is assembled to the terminal holding portion 34 from the rear side of the board-side housing 33 and is held in the assembled state by press-fitting the second press-fitting portion 53 into the second press-fitting hole 37 . The first base portion 42 is housed in the first press-fit hole 36 and the second base portion 52 is housed in the second press-fit hole 37 .

The first tab 46 and the second tab 56 protrude forward from the terminal holding portion 34 and are accommodated in the hood portion 35 . All the first tabs 46 are arranged side by side in the width direction at the same height. All second tabs 56 are positioned lower than the first tabs 46 . All the second tabs 56 are arranged in parallel in the width direction at the same height.

The first inclined portion 44 , the first connecting portion 45 , the first board connecting portion 47 , the second inclined portion 54 , the second connecting portion 55 and the second board connecting portion 57 are exposed to the outside of the board-side housing 33 and are connected to the terminals. It is arranged behind the holding portion 34 . All the first connecting portions 45 and all the second connecting portions 55 are arranged at the same positions in the front-rear direction. The first connecting portions 45 and the second connecting portions 55 are arranged in parallel so as to be alternately arranged in the width direction at the same height. All the first board connecting portions 47 and all the second board connecting portions 57 are arranged at the same positions in the front-rear direction. The first board connecting portions 47 and the second board connecting portions 57 are arranged in parallel so as to be alternately arranged in the width direction at the same height.

The board connector 32 to which the first male terminal fittings 40 and the second male terminal fittings 50 are attached is attached to the circuit board 31 with the board-side housing 33 placed on the mounting surface 31S. When the board connector 32 is attached to the circuit board 31, the first mounting portion 49 and the second mounting portion 59 are surface-mounted to the mounting surface 31S by soldering.

When the first male terminal fittings 40 and the second male terminal fittings 50 are assembled to the substrate-side housing 33, the first male terminal fittings 40 and the second male terminals are inserted into the vertically aligned first press-fitting holes 36 and second press-fitting holes 37, respectively. A fitting 50 is press-fitted. The first male terminal fitting 40 and the second male terminal fitting 50 that are press-fitted constitute one differential pair transmission line 29 . The positional relationship and the like between the first male terminal fitting 40 and the second male terminal fitting 50 that constitute one differential pair transmission line 29 will be described.

The first press-fit portion 43 and the second press-fit portion 53 are arranged with a positional relationship that is slightly shifted in the width direction. In plan view, the first press-fit portion 43 and the second press-fit portion 53 are arranged so as to partially overlap. The first press-fit portion 43 is arranged at a position higher than the second press-fit portion 53 . The first tab 46 and the second tab 56 are arranged at the same position in the width direction. The first tab 46 is positioned higher than the second tab 56 .

The first connecting portion 45 is arranged at the same height as the second connecting portion 55, and is arranged on the left side of the second connecting portion 55 with a space therebetween. The first board connecting portion 47 is arranged at the same height as the second board connecting portion 57 and arranged on the left side of the second board connecting portion 57 with a space therebetween.

The first inclined portion 44 is arranged to the left of the second inclined portion 54 with a space therebetween. The front end of the first inclined portion 44 is positioned higher than the front end of the second inclined portion 54 . Since the directions of the gradients of the first inclined portion 44 and the second inclined portion 54 are set to be reversed front to back, the rear end of the first inclined portion 44 and the rear end of the second inclined portion 54 are arranged at the same height. ing. The height difference between the first tab 46 and the second tab 56 is absorbed by the first inclined portion 44 and the second inclined portion 54, and the upper end of the first board connecting portion 47 and the upper end of the second board connecting portion 57 are at the same height. is set to Accordingly, the first board connecting portion 47 and the second board connecting portion 57 are set to have the same shape and the same size.

The harness-side module 10 described above is fitted with the board-side module 30 by accommodating the hood portion 35 . When both

modules

10 and 30 are fitted together, the pair of vertically arranged female terminal fittings 22 are connected to the vertically arranged first male terminal fittings 40 and second male terminal fittings 50 . A single differential cable 25 is composed of a twisted pair wire 26, a pair of female terminal fittings 22, and a first male terminal fitting 40 and a second male terminal fitting 50, which are a pair of male terminal fittings. A dynamic pair transmission line 29 is configured.

<Action and effect of Example 1>
The differential communication connector includes a plurality of female housings 16 arranged parallel to the mounting surface 31S of the circuit board 31, and a plurality of female terminal fittings 22 housed in the female housings 16. ing. A pair of female terminal fittings 22 accommodated in one female housing 16 constitutes one differential pair transmission line 29 . A pair of female terminal fittings 22 forming one differential pair transmission line 29 are arranged so as to be aligned in a direction perpendicular to the mounting surface 31S.

Between the adjacent female housings 16, the distance between the female terminal fittings 22 housed in one female housing 16 and the female terminal fittings 22 housed in the other female housing 16 is approximately the same distance. be. When noise is generated from one of the female terminal fittings 22, the pair of female terminal fittings 22 accommodated in the female side housing 16 different from the noise source is equally affected by the noise. As a result, crosstalk is reduced between the pair of female terminal fittings 22 that constitute the differential pair transmission line 29, so that EMC (Electro-Magnetic,
Compatibility) characteristic deterioration is suppressed.

The graph in FIG. 13 shows the ANEXT (Alien Near End Crosstalk) of the example model to which the present Example 1 is applied and the conventional model. The graph in FIG. 14 shows the ANEXTDC (Alien Near End Cross conversion loss Common to Differential) of the embodiment model and the conventional model. The graph in FIG. 15 shows AFEXT (Alien Far End Crosstalk) of the embodiment model and the conventional model. The graph in FIG. 16 shows AFEXTDC (Alien Far End Cross conversion loss Common to Differential) of the embodiment model and the conventional model. In the graphs of FIGS. 13 to 16, the dashed line indicates the 100MBps Ethernet standard Open Alliance 100Base-T1, the solid line Le indicates the crosstalk of the embodiment model, and the solid line Lc indicates the crosstalk of the conventional model.

In the embodiment model, a plurality of differential pair transmission lines 29 are arranged in the horizontal direction, a pair of female terminal fittings 22 constituting one differential pair transmission line 29 are arranged in the vertical direction, and laterally adjacent differential pairs are arranged. The pitch of the transmission line 29 is 5.6 mm. The direction in which the plurality of differential pair transmission lines 29 are arranged is a direction orthogonal to the direction in which the pair of female terminal fittings 22 constituting the differential pair transmission lines 29 of one system are arranged. Therefore, in the embodiment model, the intervals between the female terminal fittings 22 between the adjacent differential pair transmission lines 29 are approximately the same distance between any of the female terminal fittings 22 .

In the conventional model, the direction in which the plurality of differential pair transmission lines 29 are arranged and the direction in which the pair of female terminal fittings 22 constituting one differential pair transmission line 29 are arranged are both horizontal directions. The minimum interval between the female terminal fittings 22 between the dynamic pair transmission lines 29 is 5.6 mm. In the conventional model, since all the female terminal fittings 22 are arranged in a row at the same height, the interval between the female terminal fittings 22 between adjacent differential pair transmission lines 29 differs depending on the positional relationship between the female terminal fittings 22 . Between the adjacent differential pair transmission lines 29, the distance between the female terminal fittings 22 forming the far end positional relationship is greater than the distance (5.6 mm) between the female terminal fittings 22 forming the near end positional relationship.

For ANEXT shown in the graph of FIG. 13, the difference between the dashed line value and the value Lc of the conventional model is 25.8 dB, and the difference from the value Le of the embodiment model is 24.6 dB. Although the conventional model is slightly better than the embodiment model, the difference is slight, and since ANEXT has a large margin from the standard, the superiority of the conventional model is not so effective in terms of improving EMC characteristics. Regarding ANEXTDC shown in the graph of FIG. 14, the difference between the value of the dashed line at 50 MHz and the value Lc of the conventional model is 5.9 dB, while the difference from the value Le of the example model is 10.9 dB. The embodiment model is greatly improved compared to the conventional model. Since ANEXTDC has a small margin from the standard, the superiority of the embodiment model over the conventional model is effective in improving EMC characteristics.

Regarding AFEXT shown in the graph of FIG. 15, the difference between the dashed line value and the value Lc of the conventional model is 39.6 dB, and the difference from the value Le of the example model is 33.7 dB. The conventional model is better than the embodiment model, but since AFEXT has a large margin from the standard, the superiority of the conventional model is not so effective in improving the EMC characteristics. For AFEXTDC shown in FIG. 16, the difference between the value of the dashed line at 200 MHz and the value Lc of the conventional model is 9.8 dB, while the difference from the value Le of the example model is 11.6 dB. The model is significantly improved over its predecessor. Since ANEXTDC has a small margin from the standard, the superiority of the embodiment model over the conventional model is effective in improving EMC characteristics.

A pair of female terminal fittings 22 forming one differential pair transmission line 29 are connected to twisted pair wires 26 forming one differential cable 25 . With this configuration, the EMC characteristics of the differential pair transmission line 29 including the female terminal fitting 22 and the differential cable 25 are improved.

The differential communication connector includes a board-side housing 33 attached to the circuit board 31, and a plurality of first male terminal fittings 40 and second male terminal fittings attached to the board-side housing 33 and constituting the differential pair transmission line 29. 50. The first male terminal fitting 40 and the second male terminal fitting 50, which are a pair of male terminal fittings constituting one differential pair transmission line 29, are set to have the same length. According to this configuration, in the differential pair transmission line 29, the transmission line formed by the first male terminal fitting 40 and the transmission line formed by the second male terminal fitting 50 have the same length. Excellent for

The first male terminal fitting 40 and the second male terminal fitting 50 that constitute the differential pair transmission line 29 include a first tab 46 and a second tab 56 arranged so as to be aligned in a direction perpendicular to the circuit board 31, and a female terminal fitting. It has a first board connecting portion 47 and a second board connecting portion 57 arranged parallel to the direction in which the side housings 16 are arranged. According to this configuration, the plurality of first board connecting portions 47 and the second board connecting portions 57 can be arranged in a row, so that the first board connecting portions 47 and the second board connecting portions 47 and the second

board connecting portions

47 and 57 on the mounting surface 31S of the circuit board 31 can be arranged in a line. In the area other than the connection area of the board connection portion 57, the degree of freedom in designing the layout of the circuit and mounted parts is high.

The board connector 32 of the first embodiment includes a board-side housing 33 attached to the mounting surface 31S of the circuit board 31, a plurality of first male terminal fittings 40, and a plurality of second male terminal fittings 50. . The first male terminal fitting 40 has an elongated shape as a whole and is attached to the board-side housing 33 . The second male terminal fitting 50 has an elongated shape as a whole and is attached to the board-side housing 33 .

The first male terminal fitting 40 and the second male terminal fitting 50 have bilaterally symmetrical shapes in the unfolded state before bending. In other words, the first male terminal fitting 40 and the second male terminal fitting 50 in the unfolded state have a shape inverted upside down. In other words, the first male terminal fitting 40 and the second male terminal fitting 50 are formed by punching metal members into the same shape. The length of the first male terminal fitting 40 and the length of the second male terminal fitting 50 are set to the same dimension. According to this configuration, the material cost of the first male terminal fitting 40 and the second male terminal fitting 50 can be suppressed. EMC characteristics are improved in the differential pair transmission line 29 by the first male terminal fitting 40 and the second male terminal fitting 50 .

The board-side housing 33 has a terminal holding portion 34 perpendicular to the circuit board 31 . The first male terminal fitting 40 has a first terminal main body portion 41 extending through the terminal holding portion 34 in the front-rear direction, and a first board connecting portion 47 . The first board connecting portion 47 extends from the rear end of the first terminal body portion 41 outside the board-side housing 33 and is connected to the circuit board 31 . The second male terminal fitting 50 has a second terminal body portion 51 extending through the terminal holding portion 34 in the front-rear direction, and a second board connecting portion 57 . The second board connection portion 57 extends from the rear end of the second terminal body portion 51 outside the board-side housing 33 and is connected to the circuit board 31 . The first board connecting portion 47 and the second board connecting portion 57 have the same size and shape. A plurality of first substrate connection portions 47 and a plurality of second substrate connection portions 57 are alternately arranged in a row in the width direction. According to this configuration, in the area of the mounting surface 31S of the circuit board 31 other than the connection area of the first board connecting portion 47 and the second board connecting portion 57, the degree of freedom in designing the layout of the circuit and mounted components is high.

The front end portion of the first terminal main body portion 41 and the front end portion of the second terminal main body portion 51 are arranged side by side with a gap in the height direction perpendicular to the circuit board 31 . The first terminal body portion 41 has a first inclined portion 44 inclined so as to approach the circuit board 31 toward the rear. The second terminal main body portion 51 has a second inclined portion 54 inclined so as to recede from the circuit board 31 toward the rear. According to this configuration, the height difference between the front end portion of the first terminal body portion 41 and the front end portion of the second terminal body portion 51 is absorbed by the first inclined portion 44 and the second inclined portion 54 . The total length of the first male terminal fitting 40 can be shortened compared to the case where the rear end portion of the first terminal main body portion 41 and the first board connecting portion 47 are connected by a bent portion at right angles. The overall length of the second male terminal fitting 50 can be shortened compared to the case where the rear end portion of the second terminal main body portion 51 and the second board connecting portion 57 are connected by a bent portion at right angles.

The first terminal body portion 41 has a first connecting portion 45 . The first connecting portion 45 extends rearward at an obtuse angle from the rear end of the first inclined portion 44 and is connected to the first board connecting portion 47 at right angles. The second terminal body portion 51 has a second connecting portion 55 . The second connecting portion 55 extends rearward at an obtuse angle from the rear end of the second inclined portion 54 and is connected to the second board connecting portion 57 at right angles. When the second inclined portion 54 and the second board connecting portion 57 are directly connected, the second inclined portion 54 and the second board connecting portion 57 form an acute angle, and noise is generated at the portion connecting the acute angle. I don't like it because it's easy. According to the configuration of the first embodiment, the second connecting portion 55 is interposed between the second inclined portion 54 and the second board connecting portion 57, so that the second male terminal fitting 50 forms an acute angle. is no longer present, noise generation can be suppressed.

The first terminal body portion 41 has a first base portion 42 and a first press-fitting portion 43 . The first base portion 42 is wider than the first inclined portion 44 and continues to the front end of the first inclined portion 44 . The first press-fitting portion 43 has a shape protruding forward from the first base portion 42 and is press-fitted into the first press-fitting hole 36 of the board-side housing 33 from behind. The second terminal body portion 51 has a second base portion 52 and a second press-fitting portion 53 . The second base portion 52 is wider than the second inclined portion 54 and continues to the front end of the second inclined portion 54 . The second press-fitting portion 53 has a shape protruding forward from the second base portion 52 and is press-fitted into the second press-fitting hole 37 of the board-side housing 33 from behind. The first press-fit portion 43 and the first inclined portion 44 are arranged with a positional deviation in the width direction. The second press-fit portion 53 and the second inclined portion 54 are arranged with a positional deviation in the width direction.

According to this configuration, since the first inclined portion 44 is displaced in the width direction with respect to the first press-fitting portion 43 , when the first press-fitting portion 43 is press-fitted into the substrate-side housing 33 , the first base portion 42 is A jig (not shown) can be used to press the area directly behind the first press-fit portion 43 on the rear surface. Since the second inclined portion 54 is displaced in the width direction with respect to the second press-fitting portion 53 , when the second press-fitting portion 53 is press-fitted into the substrate-side housing 33 , the second press-fitting portion of the rear surface of the second base portion 52 is positioned at the second press-fitting portion. A region directly behind the portion 53 can be pushed by a jig (not shown).

[Other embodiments]
The invention is not limited to the embodiments illustrated by the above description and drawings, but is indicated by the claims. The present invention includes all modifications within the meaning and equivalents of the claims and the scope of the claims, and is intended to include the following embodiments.
In Embodiment 1, a pair of female terminal fittings forming a differential pair transmission line are connected to a twisted pair wire, but according to the first disclosure, a pair of female terminal fittings forming a differential pair transmission line are Alternatively, it may be connected to an electric wire that is routed without being twisted and is surrounded by a shielding member such as a braided wire.
In Embodiment 1, the pair of male terminal fittings constituting the differential pair transmission line are set to have the same length, but according to the first disclosure, the pair of male terminal fittings constituting the differential pair transmission line may be set to different lengths.
In Embodiment 1, the board connection portions of the pair of male terminal fittings that constitute the differential pair transmission line are arranged so as to be aligned in parallel with the alignment direction of the female housing. The board connection portions of the pair of male terminal fittings forming the differential pair transmission line may be arranged so as to be aligned in a direction perpendicular to the alignment direction of the female housings.
In Embodiment 1, the first male terminal fitting and the second male terminal fitting constitute the differential pair transmission line, but according to the second disclosure, the first male terminal fitting and the second male terminal fitting It may be one that does not form a paired transmission line.
In the first embodiment, the plurality of first substrate connection portions and the plurality of second substrate connection portions are arranged in a line, but according to the second disclosure, the plurality of first substrate connection portions and the plurality of The second board connecting portions may be arranged so as to be divided into two rows.
In the first embodiment, the first terminal body portion has the first inclined portion, but according to the second disclosure, the first terminal body portion may have a shape that does not have the inclined portion.
In the first embodiment, the second terminal body portion has the second inclined portion, but according to the second disclosure, the second terminal body portion may have a shape that does not have the inclined portion.
In the first embodiment, the first connecting portion is interposed between the first inclined portion and the first substrate connecting portion, but according to the second disclosure, the first inclined portion and the first substrate connecting portion form an obtuse angle. They may be directly connected to each other.
In the first embodiment, the second connecting portion is interposed between the second inclined portion and the second board connecting portion, but according to the second disclosure, the second inclined portion and the second board connecting portion form an obtuse angle. They may be directly connected to each other.
In the first embodiment, the first press-fitting portion and the first inclined portion are arranged with displacement in the width direction, but according to the second disclosure, the first press-fitting portion and the first inclined portion are may be arranged at the same position in
In Example 1 above, the second press-fitting portion and the second inclined portion are arranged to be shifted in the width direction, but according to the second disclosure, the second press-fitting portion and the second inclined portion are They may be arranged at the same position.

DESCRIPTION OF SYMBOLS 10... Harness side module 11... Harness connector 12... Outer housing 13... Accommodating space 14... Inner module 15... Inner housing 16... Female side housing 17... Cover 18... Front wall part 19... Partition part 20... Terminal accommodating chamber 21... Through hole 22 Female terminal fitting 23 Rectangular tubular portion 24 Crimping portion 25 Differential cable 26 Twisted pair wire 27 Covered wire 28 Sheath 29 Differential pair transmission line 30 Board-side module 31 Circuit board 31S Mounting surface 32 Board connector 33 Board-side housing 34 Terminal holding portion 35 Hood portion 36 First press-fitting hole 37 Second press-fitting hole 40 First male terminal fitting 41 First terminal body 42 Second 1 base portion 43 first press-fitting portion 44 first inclined portion 45 first connecting portion 46 first tab 47 first board connecting portion 48 first leg portion 49 first mounting portion 50 second male terminal Metal fitting 51 Second terminal main body portion 52 Second base portion 53 Second press-fit portion 54 Second inclined portion 55 Second connecting portion 56 Second tab 57 Second board connecting portion 58 Second leg portion 59 …Second mounting part

Claims

a plurality of female housings arranged parallel to the mounting surface of the circuit board;
a plurality of female terminal fittings accommodated in the plurality of female housings,
a pair of said female terminal fittings housed in said one said female housing constitutes one differential pair transmission line,
A differential communication connector, wherein the pair of female terminal fittings constituting one differential pair transmission line are arranged so as to be aligned in a direction perpendicular to the mounting surface.
The connector for differential communication according to claim 1, wherein the pair of female terminal fittings forming one differential pair transmission line are connected to a twisted pair wire forming one differential cable.
a board-side housing attached to the circuit board;
a plurality of male terminal fittings attached to the board-side housing and constituting the differential pair transmission line,
3. The connector for differential communication according to claim 1, wherein a pair of said male terminal fittings constituting one said differential pair transmission line are set to have the same length.
The pair of male terminal fittings constituting the differential pair transmission line are arranged so as to be arranged parallel to the arrangement direction of the tabs arranged perpendicular to the circuit board and the arrangement direction of the female housing. 4. The connector for differential communication according to claim 3, further comprising a substrate connecting portion.
a board-side housing attached to the mounting surface of the circuit board;
a plurality of first male terminal fittings having an elongated shape as a whole and attached to the board-side housing;
a plurality of second male terminal fittings having an elongated shape as a whole and attached to the board-side housing;
A substrate connector, wherein the length of the first male terminal fitting and the length of the second male terminal fitting are set to the same dimension.
The board-side housing has a plate-shaped terminal holding portion perpendicular to the circuit board,
The first male terminal fitting is
a first terminal main body penetrating through the terminal holding portion in the front-rear direction;
a first board connecting portion extending from a rear end of the first terminal main body and connected to the circuit board outside the board-side housing;
The second male terminal fitting is
a second terminal main body penetrating through the terminal holding portion in the front-rear direction;
a second board connecting portion extending from a rear end of the second terminal main body and connected to the circuit board outside the board-side housing;
the first substrate connection portion and the second substrate connection portion have the same size and shape;
6. The board connector according to claim 5, wherein the plurality of first board connecting portions and the plurality of second board connecting portions are arranged in a row.
a front end portion of the first terminal body portion and a front end portion of the second terminal body portion are arranged side by side with a space therebetween in a height direction perpendicular to the circuit board;
The first terminal main body has a first inclined portion inclined so as to approach the circuit board toward the rear,
7. The board connector according to claim 6, wherein the second terminal main body has a second inclined portion that is inclined so as to recede from the circuit board toward the rear.
the first terminal main body portion has a first connecting portion extending rearward at an obtuse angle from a rear end of the first inclined portion and connected at right angles to the first board connecting portion;
8. The second terminal main body according to claim 7, wherein the second terminal main body has a second connecting portion that extends rearward from the rear end of the second inclined portion at an obtuse angle and is connected to the second board connecting portion at a right angle. PCB connector.
The first terminal main body portion includes a first base portion that is wider than the first inclined portion and continues to a front end of the first inclined portion, and a shape that protrudes forward from the first base portion and has a shape that protrudes forward from the board-side housing. and a first press-fit portion press-fitted from the rear,
The second terminal main body portion includes a second base portion that is wider than the second inclined portion and continues to a front end of the second inclined portion, and a shape that protrudes forward from the second base portion and has a shape that protrudes forward from the board-side housing. and a second press-fitting portion press-fitted from the rear,
the first press-fitting portion and the first inclined portion are arranged to be displaced from each other in the width direction;
9. The board connector according to claim 7, wherein the second press-fitting portion and the second inclined portion are arranged to be displaced from each other in the width direction.