JP3429737B2 - Plug connector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug connector that constitutes an impedance matching type electrical connector, and more particularly to a CPU in which a CPU is mounted in a computer device.
The present invention relates to a plug connector that constitutes an impedance matching type electrical connector applicable to a place where a board is connected to a motherboard.

In a computer system, a plurality of CPU boards as options are prepared, and a desired CP
By connecting the U board to the mother board via an electric connector, it is possible to freely improve the function and the like.

The above-mentioned electrical connector is required to have a structure having impedance characteristics that match the impedance characteristics of the motherboard (generally 50Ω). This is to prevent signal reflection and the like from occurring at the location of the electrical connector.

Here, in order to match the impedance, it is necessary that the electrical connector has a microstrip line structure or a strip line structure. If the impedance matching with the mother board and the CPU board is attempted by the microstrip line structure, there are problems that the impedance becomes unstable and crosstalk becomes high. Therefore, for impedance matching,
It is necessary to obtain a stripline structure.

In addition, the number of terminals of the electric connector is 3 as the number of signals processed by the computer device increases.
There is a tendency of increasing the number of pins to around 00.

On the other hand, the electrical connector is small in size in order to reduce the mounting space on the motherboard,
And it is desired that the cost is low.

[0007]

2. Description of the Related Art FIG. 11 shows an impedance matching type electrical connector 10 disclosed in Japanese Patent Application No. 3-107437.

The electrical connector 10 comprises a plug connector member 11 and a jack connector member 12 with which the plug connector member 11 engages. The jack connector member 12 is the mother board 18
Above, the plug connector member 11 is fixed on the CPU board 19.

As shown in FIGS. 12 and 14, the plug connector member 11 has a main body 13 made of synthetic resin, a first-row male signal terminal group 14 fixed to the main body 13, and a main body 13. 2nd row male signal terminal group 15 and main body 1
A male ground terminal plate 1 that is fixed to No. 3 and is located between the male signal terminal group 14 in the first row and the male signal terminal group 15 in the second row.
6 and a metal ground shell 17 that surrounds the main body 13.

As shown in FIG. 13 and FIG. 14, the jack connector member 12 has a main body 20 made of synthetic resin,
This is a configuration in which the first-row female signal terminal group 21, the female-ground terminal group 22, and the second-row female signal terminal group 23 are incorporated.

In the plug connector member 11, as shown in FIG. 11, the ground shell 17 engages with the periphery of the main body 20, and the male signal terminal group 14 in the first row and the female signal terminal group 21 in the first row. The male signal terminal group 15 of the second row is engaged with the female signal terminal group 22 of the second row, the male ground terminal plate 16 is engaged with the female ground terminal group 22, and the jack connector member 1 is engaged.
2 is electrically connected.

As also shown in FIG. 14, the male signal terminal group 14 in the first row and the female signal terminal group 21 in the first row, the male ground terminal plate 16 (female ground terminal group 22), and the ground shell One side wall 17a of 17 forms a stripline structure.

Similarly, the second row male signal terminal group 15 and the second row female signal terminal group 23, the male ground terminal plate 16 (female ground terminal group 22), and the side wall on the opposite side of the ground shell 17 are provided. 17b forms a stripline structure.

As a result, the electrical connector 10 has an impedance of 50Ω and is impedance matched with the mother board and the CPU board.

[0015]

In order to cope with the increase in the number of pins by following the above two-row structure, the electric connector extends in the length direction and has a narrow width and a considerably long length. , Mechanical strength is weakened.

Therefore, as shown in FIG. 15, while arranging male ground terminal plates (female ground terminal groups) between rows,
A configuration in which the number of columns of the male signal terminal group is increased to four is conceivable.

In this case, the male ground terminal plates (female ground terminal groups) 16, 16-1 and 16-2 are added between the signal terminal group 14 in the first row and the signal terminal group 15 in the second row. hand,
It is arranged also between the signal terminal group 15 of the second row and the signal terminal group 30 of the third row, and between the signal terminal group 30 of the third row and the signal terminal group 31 of the fourth row. .

Therefore, the pitch P1 between adjacent rows becomes as wide as about 2.6 mm, and the width dimension W1 of the plug connector member becomes larger than expected, so that the size cannot be reduced.

Further, the gland shell 17 is made of metal and the cost is high.

Therefore, an object of the present invention is to provide a plug connector that solves the above problems.

[0021]

As shown in FIG. 1, an impedance matching type electrical connector 40 of the present invention comprises a plug connector member 41 and a jack connector member 42 engaging with the plug connector member 41.

The plug connector member 41 includes a plug housing 43 made of an insulating material and a large number of male signal terminals 44 fixed to the plug housing 43 in a plurality of columns and a plurality of rows.
And plate-shaped male conductors 60 to 64.

In FIG. 1, the row in the X direction constitutes one row.

Here, the arrangement in the Y direction is defined as one row.

The number of columns is four and the number of rows is five for convenience.

The large number of male signal terminals 44 includes a male signal terminal group 45 in the first row, a male signal terminal group 46 in the second row, a male signal terminal group 47 in the third row, and a male signal terminal in the fourth row. It is composed of a terminal group 48.

Similarly, the large number of male signal terminals 44 includes a male signal terminal group 50 in the first row, a male signal terminal group 51 in the second row,
Male signal terminal group 52 in the third row and male signal terminal group 5 in the fourth row
3 and the male signal terminal group 54 in the fifth row.

For example, the male signal terminal group 51 in the second row is 4
It consists of one male signal terminal 51-1 to 51-4. The subscript represents the column number.

The male conductors 60 to 64 have a ground lead end (not shown) and are located between adjacent rows so as to partition the male signal terminal group of each row.

The male conductor 61 is the male signal terminal group 5 of the first row.
0 and the male signal terminal group 51 in the second row.

The male conductor 62 is the male signal terminal group 51 of the second row.
And the male signal terminal group 52 in the third row.

The male conductors 60 to 64 face the male signal terminal 44 in the column direction.

The jack connector member 42 comprises a jack housing 70 made of an insulating material, and female signal terminals 71 and female conductor terminals 72 fixed to the jack housing 70.

The female signal terminal 71 is the male signal terminal 44 described above.
It is arranged in an arrangement corresponding to.

The female conductor terminals 72 are the male conductors 60 to 6 described above.
It is arranged in an arrangement corresponding to 4. The plug connector member 41 is engaged with the jack connector member 42 with the male signal terminal 44 engaged with the female signal terminal 71 and the male conductor 62 engaged with the female conductor terminal 72.

Male signal terminals 51-1 to 5-5 forming the second row
Look at 1-4 and the female signal terminal 71 engaged therewith.

Each of the male signal terminals 51-1 to 51-4 and the female signal terminal 71 faces the male conductor 61 on one side,
It faces another male conductor 62 on the other side and forms a strip structure.

The male signal terminals of the other rows similarly form a strip structure.

There is no inclusion between adjacent rows. Therefore, the pitch P2 between the rows is about 1.27 mm, which is about half the pitch P1 between the rows in FIG. 14, and the width dimension W2 of the connector 40 is small.

[0040]

FIG. 2 shows an impedance matching type electrical connector having a plug connector member according to an embodiment of the present invention.

Impedance matching type electrical connector 100
Is a CPU board 1 as shown in FIG. 3 and FIG.
01 and a jack connector member 1 fixed on the mother board 103.
It consists of 04.

First, the plug connector member 102 will be described.

The plug connector member 102 is a plug housing 1 which is a molded product made of synthetic resin having electric insulation.
Have 05.

The plug housing 105 includes the base portion 10.
5a and peripheral side walls 105b-1 and 105b-2.

The portion surrounded by the peripheral side walls 105b-1 and 105b-2 is a recess 105c.

A large number of through holes 10 are formed in the base portion 105a.
5d and slit 105e are provided.

A large number of grooves 1 are formed on the inner wall surface of the peripheral side wall 105b.
05f is formed.

The male signal terminal 106 has a pin shape having a square cross section, is press-fitted and fixed in the through hole 105d, and projects into the recess 105c.

In FIG. 5, the X direction (the plug connector member 10
The arrangement in the longitudinal direction (4) is called “column”, and the arrangement in the Y direction (width direction of the plug connector member 104) is called “row”.

There are 280 male signal terminals 106 in total, and 70 of each are arranged in the first, second, third and fourth columns 1.
07, 108, 109, 110.

Looking at the row, the male signal terminal 10
6 is a first row 111 and a second row 11 in which four rows are arranged.
2. The third row 113, ... The 70th row.

Each male signal terminal 106 has a signal lead end portion 106b at the lower end.

The signal lead ends 106b of the male signal terminals 106 of the first row 107 and the second row 108 are formed on the peripheral side wall 105.
It is led to the b-1 side.

The signal lead ends 106b of the male signal terminals 106 of the third row 109 and the fourth row 110 are formed on the peripheral side wall 105.
It is led to the b-2 side.

The plate-shaped male conductor 114 shown in FIG. 6 is press-fitted and fixed in the slit 105e.

The male conductor 114 is composed of a main body 114a, two plate portions 114b and 114c juxtaposed above the main body 114a, and elongated ears bent in opposite directions from both ends of the main body 114a. Section 114d, 1
14e and ground lead end portions 114f and 114g extending from the lower side of the main body portion 114a.

As shown in FIGS. 2 and 5, the plate portion 114
b and 114c project in the recess 105c and between adjacent rows. The plate portion 114b is a recess 105c of the plug housing 105 of the male signal terminals 106 of the first and second rows 107 and 108 in the "row" direction.
It faces the part that projects inward. Board 114c
Is the third and fourth rows 109, 1 in the “row” direction.
Of the ten male signal terminals 106, the plug housing 105
Facing the portion protruding into the concave portion 105c.
The ears 114d and 114f have grooves 105f-1 and 10f, respectively.
It is fitted in 5f-2.

Since the male conductor 114 has a Z-shape when viewed from above, even when the male conductor 114 is reversed in the left-right direction in FIG. 6, the male conductor 114 is press-fitted into the slit 105e without tilting. It is stable.

The ears 114d and 114f have grooves 105f-
1, 105f-2 are fitted and regulated in position, are buried in the peripheral walls 105b-1, 105b-2, and do not project into the recess 105c.

Ground lead ends 114f and 114g
Are respectively located between the two signal lead end portions 106b arranged side by side, and are aligned with the signal lead end portions 106b.

As can be seen from FIGS. 3 and 4, the upper ends of the plate portions 114b and 114c are located higher than the upper ends of the male signal terminals 106.

The plug connector member 102 having the above structure is
The signal lead end portion 106b is soldered to a signal pad (not shown) on the CPU board 101, and the ground lead end portions 114f and 114g are soldered to a ground pad (not shown) on the CPU board 101. Done, CP
It is fixed on the U board 101.

Next, the jack connector member 104 will be described.

As shown in FIG. 2, the jack connector member 104 has a jack housing 120 which is a molded product made of synthetic resin having electric insulation.

The jack housing 120 has the recess 1 described above.
The fitting portion 120a has a size corresponding to 05c.

The fitting portion 120a has a row of holes 120b shown in FIG. 3 and a slit 120c shown in FIG.
And are formed alternately in the longitudinal direction.

As shown in FIG. 3, the row of holes 120b is composed of four holes 120d, 120e, 120f and 120g.

Fork-shaped female signal terminals 121, 122, 123, and 124 are press-fitted and fixed in the holes 120d to 120g, respectively.

Female signal terminals 121, 122, 123, 1
The arrangement direction of the forks 24 is the Y direction (the direction in which the rows extend).

As shown in FIG. 4, a fork-shaped female conductor terminal 125 is press-fitted and fixed in the slit 120c.

The female conductor terminal 125 is composed of the two plate portions 11 described above.
2 fork-shaped terminal portions 1 corresponding to 4b and 114c
25a and 125b.

The forks of the fork-shaped terminal portions 125a and 125b are arranged in the Y direction (row extending direction).

The above-mentioned female signal terminals 121 to 124 and the female conductor terminal 125 are both manufactured by punching with a press, and are cheaper and thinner than those formed by bending a plate material.

Further, since the female signal terminals 121 to 124 and the female conductor terminal 125 are both oriented such that the fork arrangement direction is the Y direction, the female signal terminal 121 (1
22 to 124) and the female conductor terminal 125 are almost in a state where the two plates are overlapped with each other, and the interval P3 between them is considerably narrowed.

The jack connector member 104 includes the signal lead end portion 12 from which the female signal terminals 121 to 124 extend.
1a to 124a are soldered to a signal pad (not shown) on the mother board 103, and the ground lead end portion 125c extending from the female conductor terminal 125 is connected to the ground pad (not shown) on the mother board 103. It is soldered and fixed on the masser board 103.

Next, a state in which the plug connector member 102 is fitted in the jack connector member 104, that is, a state in which the CPU board 103 is connected to the mother board 101 will be described.

The plug connector member 102 is moved leftward as shown by an arrow 128 in FIGS. 3 and 4, and is connected to the jack connector member 104.

As shown in FIGS. 7, 8 and 9, the recess 1
05c fits around the fitting portion 120a, and the male signal terminal 1
06 is fitted in the holes 120d to 120g, and further the plate portion 1
14b and 114c are guided by the slit 120c and fit into the slit 120c. At this time, the fork-shaped female signal terminals 121, 122, 123, and 124 relatively sandwich the male signal terminal 106, and the one fork-shaped terminal portion 125a of the female conductor terminal 125 relatively sandwiches the one plate portion 114b. , Another fork-shaped terminal portion 125a is another plate portion 1
14c is relatively sandwiched.

As a result, the plug connector member 102 is connected to the jack connector member 104.

The male signal terminal 106 is the female signal terminal 121, 1
The signal lines are connected to 22, 123, and 124. Further, the male conductor 114 is connected to the female conductor terminal 125, and the potentials of the plate portions 114b and 114c are set to the ground level.

Here, as shown in FIGS. 7, 9 and 10, the female signal terminals 121, 122, 123, 124 are the male signal terminals 106-1, 106-2, 1 which form one row.
06-3 and 106-4 are sandwiched from the Y direction.

Further, as shown in FIGS. 8, 9 and 10, the fork-shaped terminal portions 125 a, 1 of the female conductor terminal 125.
25b also sandwiches the plate portions 114b and 114c from the Y direction.

Next, the dimensions of the electric connector 100 will be described.

Width direction (Y direction) (FIG. 2, FIG. 3, FIG. 4,
(I) Plug connector member 102 Nothing exists between the rows 107 to 110 of the male terminals 106, and the pitch between the male signal terminals 106 can be relatively freely reduced.

(Ii) Jack connector member 105 The female signal terminals 121 to 124 have independent holes 120d.
.About.120 g, and the direction of deformation of the fork is the Y direction.

(Iii) Conclusion Therefore, the pitch P4 between columns of the male signal terminals 106 is determined by the jack connector member 105.

[0087] is only partition wall 120h is there between the female signal terminals 121 to 124, female signal terminal 121-12
The dimensions between 4 may be small enough.

As a result, the pitch P4 between columns of the male signal terminals 106 is as small as 1.27 mm.

Therefore, although there are four rows, the width dimension W4 of the plug connector member 102 is as small as 12.7 mm.

Longitudinal direction (X direction) (FIGS. 2 and 5) (i) Plug connector member 102 A male conductor 114 is arranged between each row 111, 112 and the like of the male signal terminal 106.

However, since the male conductor 114 is a plate-shaped member, the pitch between the male signal terminals 106 can be relatively freely reduced.

(Ii) Jack connector member 105 Female signal terminals 121 (to 124) and female conductor terminals 125 are alternately arranged.

Female signal terminal 121 and female signal terminal 125
Are both fork-shaped, and
1, 125 are aligned in the thickness direction.

Therefore, the interval P3 between the terminals 121 and 125 is as small as 1.27 mm.

(Iii) Conclusion For this reason, the inter-row pitch P5 of the male signal terminals 106 is 1.2.
It is as small as 7 mm.

Therefore, even if 70 rows are arranged, the length L of the plug connector member 102 is 165 mm, which is relatively short.

Therefore, the electric connector 100 has 280 terminals, which is considerably larger than the conventional one, but
W2 × L is as small as 12.7 × 165 mm.

Next, referring to FIG. 10, the male signal terminals 106-1 to 106-4 and the female signal terminals 121 to 1 of one row are arranged.
The impedance matching of 24 will be described.

Plates 114-1b, 114-1c, 114
-2b, 114-2c, and ears 114-1d, 114
The potentials of -1e, 114-2d, 114-2e are all at the ground level.

For the male conductor terminal 106-1 and the female conductor terminal 121 which constitute the first row and are fitted to each other, the plate portions 114-1b and 114-2b are close to each other from both sides in the X direction. In addition, the ear portions 114-1d are opposed to each other at the same distance in the Y direction from one side, and the ear portions 114-2e are opposed to each other from the other side though the distance is long, and thus the strip line structure is formed. Are formed.

With respect to the male conductor terminal 106-2 and the female conductor terminal 122 which constitute the second row and are fitted to each other, the plate portions 114-1b and 114-2b are close to each other from both sides in the X direction. The ear portions 114-1d and 114-2e are evenly opposed to each other and are farther from both sides in the Y direction.
Face each other, and these form a stripline structure.

As for the male conductor terminal 106-3 and the female conductor terminal 123 forming the third row, and for the male conductor terminal 106-4 and the female conductor terminal 124 forming the fourth row, the strip line is the same as above. The structure is formed.

In addition, each male conductor 114-1 and female conductor 12
5 are in contact with each other at four points ,. Moreover, the plate portions 114-1b and 114-1c are in contact with each other on both sides in the width direction. Therefore, the contact resistance between the male conductor 114-1 and the female conductor 125 is small.

As a result, the electric connector 100 described above is provided.
Has an impedance of 50Ω for all 280 pins
It has stable characteristics concentrated close together and the impedance is well matched for all 280 pins.

Also, the crosstalk between the terminals is small.

Next, the EMI countermeasure structure will be described.

As shown in FIG. 10, the ears 114-1d,
114-2d, 114-1e, 114-2e are substantially connected to each other and are arranged along the inner walls of the peripheral side walls 105b-1, 105b-2.

The lined ears 114-1d and 114
-2d, 114-1e, 114-2e prevent electromagnetic waves from the outside from entering the connector 100.

In the above embodiment, the male signal terminals are arranged in four rows 70.
Although it is arranged in rows, the number of columns and the number of rows are not limited to the above.

[0110]

As described above, according to the first aspect of the invention, since the plate-shaped male conductors are arranged not between columns but between rows, a stripline structure can be formed. In addition, the number of rows can be increased without increasing the width dimension, and the size can be reduced in spite of the large number of pins. Further, the portion of the plate-shaped male conductor projecting from the one surface of the plug housing is located between the adjacent rows of the male signal terminals projecting from the one surface of the plug housing, and the male conductor in the column direction. Since the projecting part of is facing each projecting part of the male signal terminal, it is possible to prevent the tip of the finger from coming into contact with the male signal terminal when the tip of the finger is inserted into the plug connector by mischief, for example. Therefore, it is possible to prevent the occurrence of an accident in which an electronic component connected to the plug connector is destroyed by static electricity.

According to the second aspect of the present invention, since the upper end of the male conductor is located higher than the upper end of the male signal terminal, for example, when the tip of a finger is inserted into the plug connector by mischief, It can be achieved more reliably that the tip of the finger does not come into contact with the male signal terminal, thus more reliably preventing the occurrence of an accident in which an electronic component connected to the plug connector is destroyed by static electricity. You can do it.

According to the invention of claim 3, the aligned ears function so as to surround the male signal terminal group, so that the EMI countermeasure effect can be obtained without using a metal shell. Moreover, since the ears are part of the male conductor, the number of parts does not increase. Therefore, it is possible to obtain a sufficient EMI countermeasure effect without increasing the number of parts and thus at a lower cost than the conventional one.

According to the invention of claim 4, the mounting can be easily performed without the mounting directionality. Moreover, compared with the case where the ears are oriented in the same direction, the press-fitting into the plug housing can be performed more stably.

According to the invention of claim 5, it is possible to prevent the ears from being bent, to stably maintain the EMI countermeasure effect, and to smoothly fit the plug connector member and the jack connector member. You can do it.

[0115]

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is a diagram showing an impedance matching type electrical connector having a plug connector of the present invention.

FIG. 3 is a sectional view taken along the line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is an enlarged plan view of the plug connector member.

FIG. 6 is a diagram showing a male conductor.

FIG. 7 is a diagram showing a connection state of male signal terminals.

FIG. 8 is a diagram showing a connection state of male conductors.

FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 2 in a state where the plug connector member is connected.

FIG. 10 is a diagram illustrating impedance matching.

FIG. 11 is a diagram showing an example of a conventional impedance matching type electrical connector.

12 is a diagram showing a plug connector member in FIG.

13 is a diagram showing the jack connector member in FIG. 11. FIG.

14 is a diagram illustrating impedance matching of the electrical connector of FIG.

FIG. 15 is a diagram showing a structure in which the basic structure of the conventional example of FIG. 11 is followed to form four rows.

[Explanation of symbols]

40 impedance matching type electrical connector 41,102 Plug connector member 42,104 Jack connector member 44 Male signal terminal 45 to 48 Male signal terminal group of the first to fourth rows 50-54 Male signal terminal group of the 1st-5th rows 60-64,114 Male conductor 70, jack housing 71 Female signal terminal 72 Female conductor terminal 100 impedance matching type electrical connector 101 CPU board 103 Motherboard 104 plug housing 105a base part 105b-1 to 105b-2 peripheral side wall 105c recess 105d through hole 105e, 120c slit 105f-1, 105f-2 groove 106 Male signal terminal 106b signal lead end 107 first row 108 second row 109 third row 110th row 111 first row 112 second row 113 third row 114a main body 14b, 114c Plate part 114d, 114e ear 114f, 114g Ground lead end 120 jack housing 120a fitting part 120b hole 120d-120g hole 120h partition wall 121-124 Female signal terminal 125 female conductor terminal 125a, 125b Fork-shaped terminal portion 125c Ground terminal

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-2-256184 (JP, A) JP-A-60-93780 (JP, A) JP-A-2-148585 (JP, A) JP-A-4-256 294076 (JP, A) JP-A-5-29041 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 13/658 H01R 13/652

Claims (5)

(57) [Claims] And 1. A Puraguhaujin grayed of insulating material, on one side of the plug housing, and the male signal pin which is fixed to the plug housing and protrudes from the one surface while being aligned in a plurality of columns multiple lines, ground It has a lead end, and Oshirube body plate of which is fixed to the plug housing out Ri突 by one side of the plug housing, the protruding portions fraction of the Oshirube body, projecting portion of the upper Kieu signal terminal while positioned between adjacent rows of, in the column direction, one
Of the male signal terminals on one row and the protrusion of the male signal terminals on another row
The size that exists over the projecting part and the male of the one row
A plug connector characterized in that it is configured to face each of the protruding portion of the signal terminal and the protruding portion of the male signal terminal in a different row . 2. A plug connector according to claim 1, the upper end portion of the male conductors is a plug connector, characterized in that where the structure is in a higher position than the upper end portion of the male signal terminal element described above. 3. The plug connector according to claim 1, wherein the male conductor has ear portions formed by bending at both ends in a width direction thereof, and one ear portion is the first of the plurality of rows. Of the male signal terminals that form a row and are arranged along the first row, and the other ear portion faces the individual male signal terminals that form the final row of the plurality of rows. And a plug connector configured to be lined up along the final row. 4. The plug connector according to claim 3, wherein the ears are formed by bending both ends of the male conductor in directions opposite to each other. 5. A according to claim 1 plug connector, the plug housing, the circumferential side wall forming the concave portion on the inside
Has, peripheral side wall has a groove on the inner peripheral surface, the male conductor, in its width direction improves both ends, has a ear portion formed by bending, the ear portion is fitted into the groove A plug connector characterized by a combined structure.