JPH09167661A - Multiconductor coaxial jack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve reliability in impedance matching or the like in a multiconductor coaxial jack to which a multiconductor coaxial plug is connected. SOLUTION: A multiconductor coaxial plug 36 formed by arranging coaxial terminals 32 composed of a central conductor, an insulating cylinder part to surround the central conductor and a ground cylinder part 36 to surround the insulating cylinder part, is connected to a multiconductor coaxial jack. The multiconductor coaxial jack is provided with a aluminum die-cast-made block 41 having plural coaxial terminal-signal pin holes 41a arranged in response to arrangement of the coaxial terminals 32 of the multiconductor coaxial plug and plural ground pin holes 41b, a housing 42 to cover the block, a printed circuit board 47 to which the block is fixed, plural signal pins 44 and ground pins 45 fixed by penetrating through the printed circuit board and cylindrical spring members 46 fitted to the respective coaxial terminal signal pin holes 41a of the block. The signal pins 44 enter the inside of the cylindrical spring member 46, and are positioned in the center in the coaxial terminal-signal pin holes 41a, and the ground pins 45 are pressed in the ground pin holes 41b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-core coaxial jack to which a multi-core coaxial plug is connected. In recent years, high-speed signals as high as 600 MHz have been used in communication devices such as telephone exchanges. As connectors, in order to match impedance and reduce crosstalk, as shown in FIG. Plug 10 and multi-core coaxial jack 1
A coaxial connector 12 consisting of 1 is used.

The multi-core coaxial jack 11 is a mother board 14
It is fixed to. The multi-core coaxial plug 10 is attached to the front end in the insertion direction of the module board 15 to be inserted and mounted. When the module substrate 15 is inserted and mounted, the multi-core coaxial plug 10 is connected to the multi-core coaxial jack 11.

It is desirable that the multi-core coaxial jack 11 constituting the coaxial connector 14 be easy to assemble and have high reliability.

[0004]

2. Description of the Related Art FIGS. 11 and 12 show a conventional multi-core coaxial jack 20 as an example. This multi-core coaxial jack 20
This is described in JP-A-5-41260, and includes a housing 21, a cylindrical metal body 22 that is aligned and incorporated in the housing 21, and a perforated back cover 23.
A board 24, a signal pin 25 penetrating the board 24 and electrically connected to the signal pattern 27 of the board 24 and fixed to the board 24, and a grounding of the board 24 penetrating the board 24. The ground pin 26 is electrically connected to the pattern 28 and fixed to the substrate 24.

The metal tubular body 22 is formed by pressing a metal plate having a predetermined shape into a tubular shape, and comprises a tubular portion 22a and a pair of arm-shaped contact portions 22b and 22c. Tubular part 22a
Has a leaf spring portion 22d protruding inward. Case back 23
Has a signal pin hole 23a and a ground pin hole 23b.

A metal tubular body 22 is incorporated, and a back cover 23 is provided.
As shown in FIG. 12, in the housing 21 covered with, the signal pin 25 passes through the signal pin hole 23a, and
The ground pin 26 is projected to the center of a and is fixed to the substrate 24 while passing through the ground pin hole 23b and between the contact portions 22b and 22c. As shown in FIG. 13, the contact portions 22b and 22c are spread by the ground pin 26 and are pressed against the outer peripheral surface of the tubular portion 22a of the adjacent metallic tubular body 22. As a result, all the tubular portions 22a of the metallic tubular body 22 are at the ground potential.

Here, the multi-core coaxial plug 30 connected to the above-mentioned multi-core coaxial jack 20 will be described with reference to FIG. The multi-core coaxial plug 30 has a structure in which coaxial terminals 32 are aligned in an insulating housing 31.
The coaxial terminal 32 includes a central conductor 33, a socket contact 34 at the tip of the central conductor 33, an insulating tubular portion 35 surrounding the central conductor 33 and the socket contact 34, and a ground tubular portion 36 surrounding the insulating tubular portion 35. , And a signal pin insertion hole 37 at the center of the tip.

In this multi-core coaxial plug 30, as shown in FIG. 12, a housing 31 is fitted around the housing 21, a coaxial terminal 32 is inserted into the cylindrical portion 22a, and a ground cylindrical portion 36 is a leaf spring. The signal pin 25 is inserted into the hole 37 in contact with the portion 22d, and the socket contact 34 is connected with the tip of the signal pin 25 sandwiched.

[0009]

However, the conventional multi-core coaxial jack 20 has a problem that it is difficult to make all the tubular portions 22a of the metallic tubular members 22 have a stable ground potential. In order to set the tubular portions 22a of all the metallic tubular bodies 22 to the ground potential, the tubular portions of the adjacent metallic tubular body 22 with the contact portions 22b and 22c being spread by the ground pin 26. This is because it is necessary to press against the outer peripheral surface of 22a, and for this purpose, it is necessary to arrange all the metal cylindrical bodies 22 side by side in the housing 21 with high positional accuracy.

Therefore, the conventional multi-core coaxial jack 20
Is difficult to assemble, and the assembly error is prompt, which leads to misalignment of impedance and rise of crosstalk.
Therefore, there was a problem in reliability. Therefore, another object of the present invention is to provide a multi-core coaxial jack that solves the above problems.

[0011]

According to a first aspect of the present invention, there is provided a multi-core coaxial jack to which a multi-core coaxial plug having coaxial terminals having a ground tube portion aligned is connected. It has a plurality of coaxial terminal / signal pin holes arranged corresponding to the above-mentioned coaxial terminals and a plurality of ground pin holes arranged between adjacent coaxial terminals / signal pin holes. A conductive block, a substrate to which the block is fixed, a plurality of signal pins penetrating through the substrate and fixed, and correspondingly arranged in the coaxial terminal / signal pin holes, and the substrate. A plurality of ground pins that are fixed through the holes and are arranged correspondingly to the ground pin holes, and a cylindrical spring member that is fitted in the coaxial terminal / signal pin holes of the block. And the signal pin is connected to the cylindrical spring portion. Of entering inside the heart of the coaxial terminal-signal pin hole of the block, in which the ground pin is configured that is pressed into the ground pin bore of the block.

According to a second aspect of the present invention, there is provided a multi-core coaxial jack to which a multi-core coaxial plug formed by arranging coaxial terminals having spring-shaped ground contacts is connected. In addition, a conductive block having a plurality of coaxial terminal / signal pin holes arranged correspondingly and a plurality of ground pin holes arranged between adjacent coaxial terminal / signal pin holes. A board to which the block is fixed, a plurality of signal pins that are fixed by penetrating the board, and are arranged correspondingly to the coaxial terminal / signal pin holes, and the board It is fixed and is composed of a plurality of ground pins arranged correspondingly to the holes for the ground pin, and the signal pin is located at the center of the coaxial terminal / signal pin hole of the block. Pins are in the block It is obtained by a structure that is pressed into Randopin for hole.

[0013] The invention of claim 3 is claim 1 or claim 2.
The structure further includes an insulating housing that encloses the block.

[0014]

1, 2 and 3 show a first embodiment of the present invention.
1 shows a multi-core coaxial jack 40 according to an embodiment. The multi-core coaxial jack 40 is applied to the multi-core coaxial plug 30 of FIG.

The multi-core coaxial jack 40 has a block 41.
, Housing 42, back cover 43, and a plurality of signal pins 4
4, a plurality of ground pins 45, and a tubular spring member 46.
And The block 41 is an aluminum die-cast component, has conductivity, and has a plurality of coaxial terminal / signal pin holes 41a arranged corresponding to the coaxial terminals 32 of the multi-core coaxial plug 30 and adjacent coaxials. Hole for terminal / signal pin 41
a plurality of ground pin holes 41 arranged in a position between a.
b. The holes 41a are formed in a plurality of rows, three in each row. The holes 41b are formed in a plurality of rows, two in each row. As can be seen from FIGS. 2 and 3, the hole 41a
The holes 41b are both through holes.

The housing 42 is a molded part made of synthetic resin, has an insulating property, has a box-like size and shape that encloses the block 41, and accommodates the block 41. The housing 42 has an opening 42a on the front surface corresponding to the coaxial terminal / signal pin hole 41a of the block 41.

The back cover 43 has an insulating property and is a block 41.
43a corresponding to the coaxial terminal / signal pin hole 41a
And an opening 43b corresponding to the ground pin hole 41b of the block 41. The back cover 43 is fitted into the opening of the housing 42 that encloses the block 41, and
It covers the back of 1.

The tubular spring member 46 has a size and shape corresponding to the hole 41a of the block 41, and has a leaf spring portion 46a cut and raised inward, and as shown in FIG.
It is fitted in all the holes 41a. Here, the tubular spring member 46 is provided with the holes 41 formed in the block 41 in advance.
Since it is sufficient to simply lightly push into the inside of a, and no troublesome work such as positioning is required, the assembling of the cylindrical spring member 46 into the block 41 is performed with good workability. Further, the outer peripheral surface of each of the cylindrical spring members 46 is pressed against the inner peripheral surface of the hole 41a, and is reliably electrically connected to the block 41.

The housing 42 in which the block 41 is incorporated is fixed to the substrate 47. The signal pin 44 is
It is a press-fit pin and has a crushed portion 44a. As shown in FIG. 2, the signal pin 44 is formed in the hole 4 of the board 47.
The crushed portion 44a is press-fitted into the hole 47a so as to penetrate through 7a, is electrically connected to the signal pattern 47b of the substrate 47, and is fixed to the substrate 47. The tip side of the signal pin 44 is
The coaxial terminal / signal pin hole 41 of the block 41 passes through the opening 43a of the back cover 43 and enters the inside of the tubular spring member 46.
It is located in the center of a.

The ground pin 45 is a press fit pin and has two crushed portions 45a and 45b. The size relationship between the crushed portions 45a and 45b is as follows.
When the dimension of a is a and the dimension of the crushed portion 45b on the rear side is b, there is a relationship of a <b. This ground pin 45
3, the hole 47c of the substrate 47 is penetrated, the crushed portion 45b is press-fitted into the hole 47c, and is electrically connected to the ground pattern 47d of the substrate 47.
It is fixed to. The crushed portion 4 on the tip side of the ground pin 45
5 a passes through the hole 47 c without being crushed by the hole 47 c, passes through the opening 43 a of the back cover 43, is press-fitted into the ground pin hole 41 b of the block 41, and is connected to the block 41. Moreover, the electrical connection between each ground pin 45 and the block 41 is ensured, and the entire block 41, which is an aluminum die-cast component, is at the ground potential.

Next, the multi-core coaxial jack 40 having the above structure
Next, a state in which the multi-core coaxial plug 30 shown in FIG. 14 is connected will be described. The multi-core coaxial plug 30 has a structure in which coaxial terminals 32 are aligned in an insulating housing 31. The coaxial terminal 32 includes a center conductor 33 and a center conductor 33.
Socket contact 34 at the tip of the core, and an insulating tubular portion 35 surrounding the central conductor 33 and the socket contact 34.
And a ground tube portion 36 surrounding the insulating tube portion 35 and a signal pin insertion hole 37 at the center of the tip.

In this multi-core coaxial plug 30, as shown in FIG. 4, the housing 31 is fitted around the housing 42, the coaxial terminal 32 passes through the opening 42a, and the block 4 is inserted.
1 into the coaxial terminal / signal pin hole 41a and inserted into the tubular spring member 46, and the gland tubular portion 36 becomes the leaf spring portion 4
6a is pushed out and brought into contact with it, and the signal pin 4
4 is inserted and the socket contact 34 is the signal pin 44.
It is connected with the tip of the.

Here, as shown in FIG. 3, the crushed portion 45a on the tip end side of the ground pin 45 has a ground pin hole 41b.
The ground pin 45 and the block 41 are securely electrically connected to each other, and the entire block 41, which is an aluminum die-cast component, is at the ground potential. The ground tubular portion 36 of the coaxial terminal 32 is pressed against the leaf spring portion 46a, and the tubular spring member 46 is pressed against the inner wall of the coaxial terminal / signal pin hole 41a of the block 41. The member 46 is also surely at the ground potential. The tubular spring member 46 having this ground potential
On the other hand, the ground tubular portion 36 of the coaxial terminal 32 is in contact with the tubular spring member 46 (block 41) via the leaf spring portion 46a, and is electrically and reliably connected to the tubular spring member 46 (block 41).

Therefore, the potentials of the ground tube portions 36 of all the coaxial terminals 32 are surely at the ground potential, and the multicore coaxial plug 30 and the multicore coaxial jack 40 have a mismatch in impedance matching at the connection portion. The connection is more reliable than the conventional one, without causing any increase in crosstalk.

FIGS. 5, 6, and 7 show a multi-core coaxial jack 40A according to a second embodiment of the present invention. This multi-core coaxial jack 40A is applied to the multi-core coaxial plug 50 of FIG. Due to the configuration in which the multi-core coaxial plug 50 of FIG. 8 has a spring-shaped ground terminal, the multi-core coaxial jack 40A has the tubular spring member 46 removed from the multi-core coaxial jack 40 shown in FIG. Other than that, it has substantially the same structure as the multi-core coaxial jack 40 shown in FIG. That is, the multi-core coaxial jack 40 </ b> A has a block 41, a housing 42, a back cover 43, a plurality of signal pins 44, a plurality of ground pins 45, and a board 47. FIG.
In FIGS. 6 and 7, the same components as those shown in FIGS. 1, 2 and 3 are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 8, the multi-core coaxial plug 50 has a structure in which coaxial terminals 52 are aligned in an insulating housing 51. The coaxial terminal 52 has a center conductor 53.
A sandwiching spring-shaped central conductor contact 54 at the tip of the central conductor 53, an insulating tubular portion 55 surrounding the central conductor 53 and the central conductor contact 54, and a ground tubular portion 56 surrounding the insulating tubular portion 35, It has a structure including a spring-shaped ground contact 57 extending from the ground tube portion 56 and a signal pin insertion hole 58 at the center of the tip.

In this multi-core coaxial plug 50, as shown in FIG. 9, a housing 51 is fitted around the housing 42, a coaxial terminal 52 passes through an opening 42a, and a block 4 is inserted.
1 into the coaxial terminal / signal pin hole 41a, the spring-shaped ground contact 57 is slightly narrowed and pressed against the inner peripheral surface of the hole 41a to make contact therewith, and the signal pin 44 is inserted into the hole 58. , The center conductor contact 54 is connected with the tip of the signal pin 44 sandwiched therebetween.

Here, as shown in FIG. 7, the crushed portion 45a on the tip end side of the ground pin 45 has a ground pin hole 41b.
The ground pin 45 and the block 41 are securely electrically connected to each other, and the entire block 41, which is an aluminum die-cast component, is at the ground potential. Further, the spring-shaped ground contact 57 of the coaxial terminal 52 is pressed against the inner wall of the coaxial terminal / signal pin hole 41a of the block 41, and the ground contact 57 is securely electrically connected to the block 41. The ground tube portion 56 of the coaxial terminal 52 is surely at the ground potential.

Therefore, the multi-core coaxial plug 50 and the multi-core coaxial jack 40A are more reliable than the conventional ones without causing a mismatch in impedance matching at the connecting portion and without causing an increase in crosstalk. Well connected. In addition, the multi-core coaxial jacks 40 and 4 of the above embodiments
In block 0A, the block 41, which is an aluminum die-cast component, is covered with a housing 42 having an insulating property so that the operator's hand does not touch the block 41. However, since the potential of the block 41 is the ground potential and there is no danger, the multi-core coaxial jacks 40, 40A may be configured such that the housing 42 is omitted and the block 41 is exposed.

Further, the block 41 may be a molded product made of a special synthetic resin having conductivity, or a molded product made of an ordinary insulating synthetic resin may be plated.

[0031]

As described above, according to the first aspect of the present invention,
A multi-core coaxial jack to which a multi-core coaxial plug formed by aligning coaxial terminals having a ground tube portion is connected, and a plurality of coaxial terminals arranged corresponding to the above-mentioned coaxial terminals of the multi-core coaxial plug. A conductive block having a signal pin hole and a plurality of ground pin holes arranged between adjacent coaxial terminals and signal pin holes; and a substrate to which the block is fixed, A plurality of signal pins, which are fixed through the substrate and are arranged correspondingly to the coaxial terminal / signal pin holes, and a plurality of signal pins which are penetrated through the substrate and fixed, are arranged in the ground pin holes. A plurality of correspondingly arranged ground pins and a tubular spring member fitted in each coaxial terminal / signal pin hole of the block, wherein the signal pin is inside the tubular spring member. Enter the block's coaxial terminal and signal pin. Since the ground pin is located at the center of the hole, and the ground pin is press-fitted into the hole for the ground pin of the block, the block does not need to be specially assembled with the tubular spring member. All the tubular spring members can be surely set to the ground potential via the, so that the assemblability can be improved. Therefore, the manufacturing cost can be made lower than the conventional one. Further, since all the tubular spring members are surely set to the ground potential, the multi-core coaxial plug described above does not cause a mismatch in impedance matching in the connection portion with the multi-core coaxial jack, and
It can be connected to a multi-core coaxial jack without increasing crosstalk. Therefore, it is possible to improve reliability as compared with the related art.

According to a second aspect of the present invention, there is provided a multi-core coaxial jack to which a multi-core coaxial plug formed by arranging coaxial terminals having spring-shaped ground contacts is connected. Conductivity having a plurality of coaxial terminal / signal pin holes arranged corresponding to the terminals and a plurality of ground pin holes arranged between adjacent coaxial terminals / signal pin holes Block, a board to which the block is fixed, a plurality of signal pins that are fixed by penetrating through the board and arranged correspondingly in the coaxial terminal / signal pin holes, and the board Is fixed, and is composed of a plurality of ground pins arranged corresponding to the holes for the ground pin, the signal pin is located at the center of the coaxial terminal / signal pin hole of the block, The ground pin is The cylindrical spring member according to the first aspect of the invention is not required because it is press-fitted into the hole for the ground pin of the plug. Therefore, the assemblability is improved as compared with the invention of the first aspect. You can Therefore, the manufacturing cost can be further reduced. Further, all the coaxial terminal / signal pin holes of the block can be surely set to the ground potential, so that the above-mentioned multi-core coaxial plug causes a deviation of impedance matching in the connection portion with the multi-core coaxial jack. Connection, and without causing an increase in crosstalk, a multi-core coaxial jack can be connected.
Therefore, it is possible to improve reliability as compared with the related art.

According to the third aspect of the present invention, since the block is further provided with an insulative housing that encloses the block, it is possible to prevent the operator's hand from touching the block. Furthermore, the reliability can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a multi-core coaxial jack according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line YZ including line II-II in FIG.

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

FIG. 4 is a diagram showing a state where the multi-core coaxial plug of FIG. 14 is connected to the multi-core coaxial jack of FIG.

FIG. 5 is an exploded perspective view of a multi-core coaxial jack according to a second embodiment of the present invention.

6 is a cross-sectional view taken along the line YZ including line VI-VI in FIG.

7 is a cross-sectional view taken along the line YZ including line VII-VII in FIG.

FIG. 8 is a view showing a multi-core coaxial plug connected to the multi-core coaxial jack of FIG.

9 is a diagram showing a state in which the multi-core coaxial plug of FIG. 8 is connected to the multi-core coaxial jack of FIG.

FIG. 10 is a diagram showing an application example of a multi-core coaxial jack.

FIG. 11 is an exploded view showing an example of a conventional multi-core coaxial jack as seen from the back side.

12 is a cross-sectional view taken along the line YZ including line XII-XII in FIG.

13 is a cross-sectional view of FIG. 12 with a substrate and a back cover removed.
It is the figure seen from the direction.

FIG. 14 is a view showing a multi-core coaxial plug connected to the multi-core coaxial jack of FIG.

[Explanation of symbols]

 30 multi-core coaxial plug 31 housing 32 coaxial terminal 33 center conductor 34 socket contact 35 insulating cylinder part 36 ground cylinder part 37 signal pin insertion hole 40, 40A multi-core coaxial jack 41 aluminum die cast block 41a multiple coaxials Holes for terminals / signal pins 41b Holes for multiple ground pins 42 Housing 42a that is a molded part of synthetic resin 43a Corresponding openings for coaxial terminal / signal pin holes 43 Back cover 43a Opening for coaxial terminal / signal pin holes 43b An opening corresponding to a hole for a ground pin 44 Signal pin 44a Crushed portion 45 Ground pin 45a, 45b Crushed portion 46 Cylindrical spring member 46a Leaf spring portion 47 Substrate 47a, 47c Hole 47b Signal pattern 47d Ground pattern 50 Multi-core coaxial plug 51 Housing 52 Coaxial terminal 53 Middle Core conductor 54 Clamping spring-shaped center conductor contact 55 Insulating cylinder portion 56 Ground cylinder portion 57 Spring-shaped ground contact 58 Signal pin insertion hole

Claims (3)

[Claims] 1. A multi-core coaxial jack to which a multi-core coaxial plug formed by arranging coaxial terminals having a ground tube portion is connected, the multi-core coaxial plug having the coaxial terminals arranged correspondingly. A conductive block having a plurality of coaxial terminal / signal pin holes and a plurality of ground pin holes arranged between adjacent coaxial terminal / signal pin holes, and the block is fixed. And a plurality of signal pins that are fixed through the substrate and are arranged correspondingly in the coaxial terminal / signal pin holes, and through the substrate and are fixed to the ground. The pin holes are arranged correspondingly to each other, and a plurality of ground pins are arranged, and a cylindrical spring member fitted into each coaxial terminal / signal pin hole of the block. The inside of the block-shaped spring member Located in the center of the hole for coaxial terminals and signal pins,
A multi-core coaxial jack characterized in that the ground pin is press-fitted into a hole for a ground pin of the block. 2. A multi-core coaxial jack to which a multi-core coaxial plug formed by arranging coaxial terminals having spring-shaped ground contacts is arranged, the multi-core coaxial plug being arranged corresponding to the coaxial terminals. An electrically conductive block having a plurality of coaxial terminal / signal pin holes and a plurality of ground pin holes arranged between adjacent coaxial terminal / signal pin holes; and A fixed board, a plurality of signal pins arranged corresponding to the coaxial terminal / signal pin holes and fixed through the board, and fixed through the board; The ground pin hole and a plurality of correspondingly arranged ground pins, wherein the signal pin is located in the center of the coaxial terminal / signal pin hole of the block, and the ground pin of the block is For ground pin Multicore coaxial jacks, characterized in that it has a structure that is press-fitted within. 3. A multi-core coaxial jack, further comprising an insulative housing enclosing the block according to claim 1 or 2.