JPH0541258A - High density multicore coaxial connector for substrate - Google Patents

Abstract

PURPOSE:To make it possible to form a contact in a high density. CONSTITUTION:Contact insertion holes 34 are formed lining up on the front side of a housing 33, a metallic tubular body 36 is fitted to each contact insertion hole 34, grooves 35 communicating to the contact insertion holes 34 are formed on the rear side surface of the housing 33 along the lining up direction of the holes 34 between the lineups of them, metallic gland plates 37 are pressed in along the grooves 35, the gland contact pins 36a of the tubular bodies 36 at both sides are contacted elastically to both sides of the gland plates 37, and all the tubular bodies are made at the same potential. Gland pins 36b are formed only on the tubular bodies 36 to the outer side of the lineup of the contact insertion holes 34. When this connector 38 is installed to a substrate 30, signal pins 31 are positioned on the axes of the tubular bodies 36, and the gland pins 36b are connected to the through holes of the substrate 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-density multi-fiber coaxial connector for a substrate, which is used by being contacted with a printed circuit board so as to accommodate a plurality of signal pins projecting from the printed circuit board, and is coupled with a coaxial contact. ..

[0002]

2. Description of the Related Art FIG. 4 shows a conventional coaxial connector. First
An opening 12 is formed in the front surface of the connector 11, and in the opening 12, a plurality of pin contacts 13 extending in the front-rear direction are arranged and housed on the two sides at right angles to the paper surface and are held by the first connector 11. The front portion of the second connector 14 can be fitted and inserted into the opening 12 of the first connector 11, and the contact receiving holes 15 are formed in two rows in the front surface at right angles to the paper surface. Are the same as the arrangement of the pin contacts 13. Contact receiving hole 15
The two opposite columns of the two are communicated with each other at the rear part of the second connector 14 to form one hole 16, and one end of the coaxial cable 17 is inserted and fixed in each hole 16, and the center conductor 18 and the outer conductor 19 and 19 are connected to the socket contacts 21 respectively accommodated in the two contact accommodation holes 15.

When the second connector 14 is inserted and coupled into the opening 12 of the first connector 11, the corresponding pin contact 13 and the socket contact 21 elastically contact each other.

[0004]

In the conventional coaxial connector, as shown in FIG. 4B, the pin contact 1 of the center conductor (signal pin) is provided on the substrate on which the connector 11 is mounted.
The signal through holes 22 into which 3 is to be inserted have the pitch a.
The signal through holes 22 are arranged at intervals of a, and the ground through holes 23 into which the pin contacts 13 of the outer conductor (ground pin) are to be inserted are provided for the respective signal through holes 22. It is formed by being shifted by a / 2. In this way, the signal through hole 22
The number of through holes 23 for ground and the number of through holes 23 for ground are the same as the number of coaxial cables 17, respectively, and the number of through holes is large as a whole, wiring between these through holes is difficult, and high density, that is, the pitch of the coaxial contacts is small. It was difficult to do.

[0005]

According to the present invention, a plurality of contact insertion holes are formed on the front surface of the housing in the same arrangement as the signal pins, and on the back surface of the housing,
Grooves are formed between the contact insertion holes that are adjacent to and in communication with the contact insertion holes. A metal cylindrical body is coaxially fitted in each of the contact insertion holes, and a metal ground plate is fitted in the grooves. Is inserted, and the cylindrical ground contact pieces on both sides are elastically contacted on both sides thereof.

[0006]

FIG. 1 shows an embodiment of the present invention. A plurality of signal pins 31 are arranged in a protruding manner on the substrate 30. In this example, the signal pins 31 are projected on the substrate 30 in three rows at right angles to the paper surface. The pitch of the signal pins 31 is a, and the spacing between adjacent arrays is also a. The signal pins 31 may be directly fixed to the substrate 30, or the signal pins 31 may be arrayed and held on a sub-holding plate, and the sub-holding plate may be fixed to the substrate 30 so as to be in contact with the sub-holding plate. It may be projected through the small hole. Further, in this example, the signal pin 31 protruding from the substrate 30
This is the case where the insulating layer 32 is formed from the substrate 31 to the outer periphery up to the intermediate portion.

As shown in FIGS. 1 and 2C, the housing 33
A plurality of contact insertion holes 34 on the front surface of the signal pin 31
It is formed with the same sequence as the sequence of. Therefore, in this example, the contact insertion holes 34 are formed in three columns, and the arrangement pitch is a in both rows and columns. On the back surface of the housing 33, a groove 35 is formed along the arrangement direction of adjacent contact insertion holes 34, and the groove 35 and the contact insertion holes 34 on both sides are in contact with each other and communicate with each other. ..

A metallic cylindrical body 36 is coaxially fitted and inserted into each contact insertion hole 34. As shown in FIG. 2A, the tubular body 36 has a cylindrical shape, and two cut grooves are formed in parallel with the axis from the rear end thereof, and a tongue-shaped portion is formed between these cut grooves. The tongue-shaped portion is bent into a dogleg shape so that an intermediate portion is projected from the peripheral surface of the tubular body 36 to form a ground contact piece 36a. The ground contact piece 36a faces the ground contact piece 36a and is rearward from the tubular body 36. The ground pin 36b is integrally projected on the. The cylindrical body 36 having the ground pin 36b is inserted into both outer sides of the array of contact insertion holes 34, and the ground pin 36b is located outside the array of holes 34.

As the cylindrical body 36, as shown in FIG. 2B,
In some cases, a ground contact piece 36a is formed in place of the ground pin 36b, that is, two ground contact pieces 36a are formed at intervals of 180 degrees. And the ground contact pieces 36a are arranged in the direction perpendicular to the contact insertion hole arrangement. Further, in any of the embodiments, any of the tubular bodies 36 shown in FIGS. 2A and 2B is extended forward to the joint with the mating coaxial contact, and the outer conductor contact piece 36c is slightly cut and raised inward at the front extension. There is. The connecting portion is located forward of the free end of the outer conductor contact piece 36c. Such a tubular body 36 is made by bending a metal plate.

As shown in FIG. 1, the groove 35 of the housing 33.
The metal ground plate 37 extended along this is press-fitted and held. As shown in FIG. 3A, the ground plate 37 has a claw 37 a formed on the plate surface, and when the claw 37 a is pressed into the groove 35,
a acts as a retainer. The ground contact pieces 36a of the tubular bodies 36 on both sides of the ground plate 37 elastically contact the plate surface of the ground plate 37.

As described above, the connector 38 of the present invention comprises the housing 33, the cylindrical body 36 and the ground plate 37.
The connector 38 is brought into contact with the substrate 30 to connect the signal pins 3
1 is located at the axial center of each tubular body 36, and the ground pin 36
b is inserted and connected to the ground through hole 23 of the substrate 30. At this time, all the tubular bodies 36 are ground contact pieces 36.
The ground potential of the substrate 30 is set via the a and the ground plate 37 in sequence. When the coaxial contact 39 is inserted into the contact insertion hole 34 in this state, the signal pin 31 is inserted into and connected to the socket contact formed of the central conductor of the coaxial contact 39, and the outer conductor is fitted into the tubular body 36 to make contact with the outer conductor. The piece 36c elastically contacts the outer peripheral surface of the coaxial contact 39.

[0012]

As described above, according to the present invention, the tubular body 36 is accommodated in the contact insertion hole 34, and the tubular body 3 is provided.
All the tubular bodies 36 are set to the same potential via the ground contact piece 36a of 6 and the ground plate 37. Therefore, the ground pin 36b may be provided only on the cylindrical bodies 36 in the outer row. Therefore, the signal through hole 2 formed on the substrate 30
2A and the ground through-holes 23, the ground through-holes 23 may be formed outside a plurality of arrays of the signal through-holes 22 as shown in FIG. 4A. 4B), the wiring can be made much easier, the density of through holes can be increased, and the contact pitch can be reduced. This effect increases as the number of contact insertion hole arrays increases. The ground pin 36b may be provided only on a part of the cylindrical bodies 36 in the outer row and / or the middle row, or may be provided on the ground plate 37. Also in this case, the same effect as described above can be obtained.

Further, when the coaxial contact 39 is to be inserted into the tubular body 36, each part from the coaxial contact 39 to the coupling part and the substrate 30 has a coaxial structure, and impedance matching is good.

[Brief description of drawings]

FIG. 1 is a sectional view showing a state in which an embodiment of the present invention is attached to a substrate.

2A is a perspective view showing an example of the tubular body 36, B is a cross-sectional view showing another example of the tubular body 36, and C is a view showing a part of the back surface of the housing 33. FIG.

FIG. 3A is a perspective view showing a ground plate 37, and B is a sectional view showing a conventional multi-core coaxial connector.

FIG. 4A is a diagram showing an example of a through hole of a substrate used for the connector of the present invention, and B is a diagram showing an example of a through hole of a substrate used for a conventional connector.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Goro Haga 1-21-6, Dogenzaka, Shibuya-ku, Tokyo Japan Aviation Electronics Industry Limited

Claims (1)

[Claims] 1. A coaxial connector, which is used by confronting a board having a plurality of signal pins arranged in a protruding manner so as to accommodate the signal pins, wherein a plurality of contact insertion holes are formed on the front surface of the board. A housing which is formed in the same arrangement and has a groove formed on its rear surface so as to communicate with them in the adjacent arrangement of the contact insertion holes, and is housed coaxially therewith in the contact insertion holes;
A metal cylinder having an integrally formed ground contact piece, and a metal ground inserted along the groove into the groove and elastically contacting the ground contact pieces of the cylinder bodies on both sides. A high-density multi-core coaxial connector for a board, which includes a board.