JP2595815Y2 - Coaxial multi-core connector for connection between boards - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-core connector for mutually connecting circuit boards used in an electronic device.

[0002]

2. Description of the Related Art Generally, a plurality of circuit boards are used in electronic equipment. When electrical connection is made between circuit boards, a so-called flat cable in which a required number of covered electric wires are arranged and joined in a belt shape is widely used.

FIG. 10 shows a specific example of electrical connection between circuit boards in an electronic device. 1, 1 'are circuit boards, respectively, and 2 and 2' are circuit boards 1, 1 '.
(Hereinafter referred to as “substrate”) is a rectangular multi-core receptacle connector (hereinafter referred to as “receptacle”) attached to and fixed to
Reference numeral 3 'denotes a rectangular multicore plug connector (hereinafter referred to as a plug) which fits into the receptacles 2 and 2'. Here, the receptacle 2 and the plug 3 are in a fitted state, and the receptacle 2 ′ and the plug 3 ′ are in a removed state.
4 is a flat cable connecting the plug 3 and the plug 3 '.

[0004]

[Problems to be Solved by the Invention] In the technology of connecting the required number of insulated wires between the substrates with a flat cable in which the required number of insulated wires are simply arranged in a strip shape, under the recent high-frequency transmission technology,
There are the following issues. (1) Transmission characteristics are degraded. (2) Radiation noise frequently occurs. Therefore, in response to this problem, as a cable connecting between the substrates, instead of the above-described coated electric wire, a metal foil for shielding is wound around the outside of the small-diameter coaxial coated wire or the insulated coated core wire,
A flat cable has been used in which a metal wire is attached to the inside or outside of the metal foil winding layer, and a plurality of small-diameter drain wires provided with a coating layer are arranged and joined in a belt shape.

However, when connecting the substrates with a flat cable formed of a coaxial line or a drain line, there are the following problems to be solved. (1) In the conventional rectangular multi-core connector, the contacts are simply arranged in a line and are not coaxial.
Even if the cable connecting between the substrates is a coaxial line or a drain line, radiated noise is picked up at the connector portion or transmission characteristics are deteriorated. (2) If the conventional coaxial connector is used as it is, the shape is too large, the number of parts is large, and the number of assembly steps is increased. , And the cost is high.

The present invention has been made in view of such a situation, and provides a multi-core connector for connection between boards which is small in size, has a small number of parts, has excellent transmission characteristics, and can reduce radiation noise. It is the purpose.

[0007]

The above object can be attained by taking the following means. (1) As illustrated in FIG. 1, a cylindrical external conductor 14 is provided in a required number of holes provided in the electrically insulating flat block 11.
A coaxial contact 12 holding a central conductor 13 is fitted and fixed therein via an insulator 15.
The outer conductor 14 is formed by forming a metal plate into a cylindrical shape,
Bend part 2 so that at least the upper end is opened outward
0 and project it above the insulating block 11
(Claim 1). (2) Also, as exemplified in FIG.
The external conductor 14 of the
It consists of a plating layer applied to the wall of the contact mounting hole.
Mating side open end of contact mounting hole with plated layer
The earth member 21 may be attached to the
(Claim 2). (3) Further, in the above structures (1) and (2),
2, as shown in FIG. 4, etc.
The tact consists only of the center conductor 16 and the plug side
When the connector is mated with the socket side connector,
A position where it contacts the bent portion 20 or the ground member 21 at the upper end.
Is provided with a ground circuit 17 '
(Claim 3).

[0008]

(1) The contact fitted to the block is connected to the center conductor 13 via the insulator 15 inside the cylindrical outer conductor 14.
Is a so-called coaxial type contact having a structure in which the transmission characteristics are maintained, so that the transmission characteristics are excellent and it is hardly affected by radiation noise. (2) As described in claim 1, above the block 11
When the bent portion 20 protrudes, this portion has elasticity.
Therefore, as shown in FIG.
Is only the center conductor 16 directly projecting from the substrate, and
A ground circuit 17 'is provided around the
When connected, the bent portion 20 is connected to the ground circuit 1.
7 ', a structure of making electrical contact can be realized. (3) As in the second aspect of the present invention,
When used, as shown in FIG.
The tact is applied only to the center conductor 16 that directly projects from the substrate.
And a ground circuit 17 'is provided around it,
When the connector is connected, the bent portion 20 is
Circuit 17 'can realize a structure of making electrical contact.
You.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG.
(A) shows the appearance of one specific example of the socket side of the multicore connector according to the present invention. In the figure, 1
1 is a suitably thick flat plate made of electrically insulating material
A block, 12 is a coaxial type Kokutakuto fitted to the block 11, the coaxial contact 12
Consists of a center conductor 13 and an outer conductor 14.

FIG. 1B shows an example of the BB cross section of FIG. 1A. In the block 11, a socket type center conductor 13 is held by an outer conductor 14 via an insulator 15. The fitted coaxial contact is fitted.

The outer conductor 14 is, for example, stamped from a metal plate.
It was made by sheet metal processing. Specifically, an example
For example, as shown in FIG. 3, a metal plate is formed into a cylindrical shape,
Make a cut in the upper and lower ends of the body, for example, and open this part outward
By bending (20 is the bent part)
can do. FIG. 3A is a plan view, and FIG.
The BB cross section is shown in (b). Bend at upper and lower ends of cylindrical body
20 fits the outer conductor 14 into the block 11,
You may bend. The bent part 20 is formed by bending.
Spring properties. The bent portion 20 at the upper end is
So that it slightly protrudes from the upper surface of the block 11.
To The bent portion 20 at the lower end projects below the block 11.
It may or may not be put out.

FIG . 1 shows the fitting of this coaxial contact.
As a mating member, a pin is connected to the outer conductor 17 via an insulator 18.
Also shown is a coaxial plug 19 in which the center conductor 16 of the mold is retained.
Have been.

In FIG. 1B, when the center conductor 16 of the coaxial plug 19 is inserted into the center conductor 13 of the coaxial contact 12, the outer conductor 17 of the coaxial plug 19 and the outer conductor 14 of the coaxial contact 12 are connected. Mating while touching.

FIG. 2 shows another specific example different from that shown in FIG. 1B. In this case, the structure of the socket-side connector is the same as that of FIG. 1, but the structure of the plug-side connector is different. In the multi-core connector shown in FIG. 2, the center conductor 16 of the plug-side connector is directly attached to the surface of the board 1. In addition ,
A ground circuit 17 'is provided on the substrate 1 around the body 16.
You. When the plug and socket are connected by a connector,
The external conductor 1 on the socket side is connected to the ground circuit 17 '.
The four bent portions 20 make contact.

With this configuration, the plug side connector is
Only the center conductor 16 is provided, and the outer conductor 17 and the insulator 13 are compared with the multi-core connector according to the present invention shown in FIG.
Can be omitted, and the number of components can be reduced. Further, since the outer conductor 14 of the coaxial contact 12 can be manufactured from a metal material by stamping or the like, it can be manufactured in large quantities at low cost.

FIG. 4 shows another specific example of the multicore connector according to the present invention. 4, in the multi-fiber connector according to the present invention, the outer conductor 14 of the coaxial contact 12 is formed by applying electroless plating of, for example, gold, silver or the like to the surface of the insertion hole of the outer conductor 14 of the block 11. can do.

[0017] In this case, graph from the outer conductor 14 of the substrate 1
The ground connection to the ground circuit 17 ' can be made by attaching a ground member 21 as shown by a chain line in FIG. The ground member 21 can be attached by, for example, fitting into the opening of the plated outer conductor 14 as shown in FIG.

The ground member 21 may be of any shape as long as it can be fitted into the opening of the external conductor 14. For example, those shown in FIGS. 6 and 7 can be used. FIG. 6 shows a metal plate material formed in a tubular shape, a cut made in one end of the tubular body, and a bending process in which this portion is opened outward. FIG. 7 shows a metal plate strip formed into an annular shape with corrugation.

In the multi-fiber connector according to the present invention, as shown in FIGS.
When directly attaching to the substrate 1, as shown in FIG.
A fixing block 23 having a hole 22 capable of holding the center contact 16 in a positional relationship to be mounted on
Then, the center contact 16 is inserted at a predetermined position on the surface of the substrate 1, and the center contact 16 is fixed to the surface of the substrate 1 by heating or the like by brazing or the like. Fixing block 23
May be removed immediately after brazing the center contact 16, but may be left as a protective member for the center contact 16 until the next step of the substrate 1. When the fixing block is removed immediately after brazing, as shown in FIG. 8, it is preferable to provide a protection frame 24 for protecting the center contact 16 mounted on the substrate.

[0020]

[Effect of the invention] (1) The present invention of claim 1, 2, following
Has the effect of Since the fitted central conductors are coaxially surrounded by the outer conductor, it is possible to prevent a decrease in transmission characteristics and to reduce radiation noise. Surface mounting is possible.
The socket-side connector fitted into the hole of the flat block can be made thin (reduced height).
You. (2) In particular, according to the present invention of claim 1, the contact of the plug-side connector can be only the center conductor. That is, this center conductor is made to protrude directly from the substrate, and a ground circuit is provided around it,
When the connector is connected, the upper protruding portion of the external conductor made of a metal plate formed in a cylindrical shape on the socket side can be brought into contact with the ground circuit. In addition, the height can be further reduced by doing so. Since the outer conductor can be manufactured from a metal plate by punching or the like, it can be continuously obtained in large quantities at low cost. (3) In particular, according to the present invention, the contact of the plug-side connector can be only the center conductor. That is, this center conductor is made to protrude directly from the substrate, and a ground circuit is provided around it,
When the connector is connected, the earth member on the socket side can be brought into contact with the ground circuit. In addition, the height can be further reduced by doing so.
By using an earth member that can be manufactured by sheet metal processing, the outer conductor can be plated, so that the number of parts can be further reduced, the number of assembly steps can be reduced, and the cost can be reduced. .

[Brief description of the drawings]

FIGS. 1A and 1B show a socket side of a multicore connector according to the present invention, in which FIG. 1A is a schematic diagram of an external appearance, and FIG. 1B is an explanatory diagram showing an example of a cross section taken along line BB of FIG.

FIG. 2 is an explanatory view showing another example of the multicore connector according to the present invention.

FIG. 3 is an explanatory view showing an example of an external conductor of the multicore connector shown in FIG. 2;

FIG. 4 is an explanatory view showing still another example of the multicore connector according to the present invention.

FIG. 5 is an explanatory view showing an example of mounting a ground member of the multicore connector shown in FIG. 4;

FIG. 6 is an explanatory view of an example of a ground member of the multicore connector shown in FIG. 4;

FIG. 7 is an explanatory view of another example of the ground member of the multicore connector shown in FIG. 4;

FIG. 8 is an explanatory diagram of a protective frame of a center conductor attached to a substrate.

FIG. 9 is an explanatory view of a jig for mounting a center conductor on a substrate.

FIG. 10 is an explanatory view of a conventional board-to-board connection connector.

[Explanation of symbols]

 1, 1 'board 11 block 12 coaxial contact 13 socket-type center conductor 14 outer conductor 15 insulator 16 pin-type center conductor 17 plug-side outer conductor 18 plug-side insulator 19 coaxial plug 20 cylindrical outer conductor 21 grounding member 23 Fixing block (jig) 24 Protective frame

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 17/04-17/12

Claims (3)

(57) [Scope of request for utility model registration] 1. A cylindrical outer conductor 14 is held in each of a plurality of contact mounting holes provided in an electrically insulating flat block 11 via an insulator 15 in the outer conductor 14. Coaxial contact 12 consisting of central conductor 13
A socket-side connector in which is fitted, a plug-side connector that fits into the socket-side connector,
In the coaxial multi-core connector for board-to-board connection, the outer conductor 14 is formed of a metal plate material in a cylindrical shape.
At least the upper end of the shape is bent outward to open
A bent portion 20 is formed, and the bent portion 20 at the upper end is formed by the insulation.
A coaxial multicore connector for connection between boards , which protrudes above the flexible block 11 . 2. An electric insulating plate-shaped block 11
Each of the multiple contact mounting holes
The conductor 14 and the inside of the outer conductor 14 are held through an insulator 15.
Coaxial contact 12 comprising a held central conductor 13
A socket-side connector is fitted, the plug connector that mates with the socket connector,
In the coaxial multi-core connector for board-to-board connection, the outer conductor 14 of the coaxial contact is formed of a plating layer provided on a wall surface of a contact mounting hole provided in the block 11, and the plating layer is A coaxial multicore connector for connection between boards, wherein a ground member 21 is attached to the fitting-side opening end of the provided contact attachment hole. 3. The contact of the plug-side connector comprises only a center conductor , and the plug-side connector has
When fitted with the socket-side connector, the bent portion 2 at the upper end
0 or a ground circuit
The first or second claim, wherein 17 'is provided.
The coaxial multi-core connector for connection between boards described above.