JPH05135825A - Electric connector for multicore coaxial cable - Google Patents

Abstract

PURPOSE: To sufficiently ensure soldered strength by forming a plurality of through holes at the upper end part of an earthing contact. CONSTITUTION: In an electric connector for multi-conductor, coaxial cable having a contact 150 for signal and a contact 160 for earthing, a plurality of circular through holes 110 corresponding to portions where the coaxial cable is soldered are arranged at the upper end part C of the contact 160 for earthing. Since solder is filled to the inside of the through hole 110, solder peeling off strength in the termination treatment of the shield wire of the coaxial cable is ensured, and reliability in soldering is enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector for a multi-core coaxial cable used for interconnection of electronic circuits, and more particularly to the structure of its ground contact and soldering of a coaxial cable between a signal contact and a ground contact. The present invention relates to an electric connector for a multi-core coaxial cable having a structure.

[0002]

2. Description of the Related Art FIG. 5 is a perspective view of a conventional structure, and FIG. 6 is a sectional view of the vicinity of the center of FIG. In the figure, 10 is a body, 20 is a molded product for contact alignment, 30 is a ground contact mating plate, 40 is a signal contact, 50 is a header mating side grounding contact, 61 is a cable pressure contact side grounding contact, 62a and 62b are soldering portions, 70A and B are shells, 80 is a cable fixing plate, and 85
Is an integrally molded portion, 90 is a coaxial cable, and 91 is a coaxial cable wire. An example of the electrical connector for a multi-core coaxial cable shown in these figures is disclosed in Japanese Patent Laid-Open No. 3-8277.

[0003]

The above-mentioned conventional electrical connector can meet the demand for higher density in the market, but has the following problems. In this connector, the soldering points are 62a, 62
Since b is included, there are inevitably two assembling steps, and there is a problem of an increase in product price due to an increase in man-hours.

In the above structure, the ground contact is composed of two parts. That is, in the above-mentioned connector, the grounding contact is the header side grounding contact 50.
And the grounding contact 61 on the cable assembly side, when these contacts are subjected to solder plating or the like, contact failure may occur depending on environmental conditions such as violent vibration, which may cause problems in contact reliability. May occur.

An object of the present invention is to shorten the soldering process by forming the grounding contact as an integral structure and to provide a plurality of through holes at the upper end of the grounding contact so that the solder is filled therein. By doing so, it is possible to provide an electrical connector with high contact reliability that is capable of sufficiently securing soldering strength.

[0006]

The present invention solves the conventional problems by adopting the following structure. The grounding contact has an integrated structure having a contact side that fits with the header connector and a solder side that performs a soldering terminal treatment of the shield wire of the cable. In this case, a plurality of circular or polygonal through holes 110 are provided at the upper end of the ground contact at periodic positions. The soldering can be made strong by flowing the solder into the through holes.

The connection structure is improved so that the process of soldering end of the ground contact and the cable shield wire can be shortened, and a coating is provided between the ground contact and the ground strips arranged on both sides thereof. Remove the cable and insert the cable with the shielded wire exposed, and solder it to the inserted part. With such a structure, soldering can be performed at once. Then, it is possible to sufficiently flow the solder between the ground contact and the ground strips arranged on both sides of the contact including the through hole described above.

[0008]

1 is a sectional view showing an embodiment of an electric connector for a multi-core coaxial cable according to the present invention, FIG. 2 is a side view of a grounding contact shown in FIG. 1, and FIG. 3 is a soldering according to the present invention. It is explanatory drawing of a structure. 1-4, 120 is a body, 130 is a wire guide, 140 is a shell, 1
50 is a signal contact, 160 is a ground contact,
170 is a contact alignment molded product, 180 is a ground strip, 190 is a soldering portion, 200 is a shell, 210
Is a cable fixing plate, 200 is a shell, 220 is an integrally molded product, 230 is a cable, 231 is a cable shield wire,
250A and B are heaters for soldering.

As is clear from the overall configuration of FIG. 1, the present invention has a structure in which soldering can be performed in one step. Further, as shown in FIG. 2, the ground contact 160 of the present invention has a plurality of circular through holes 110 arranged in three rows at its upper end portion C corresponding to the location where the coaxial cable is soldered. There is. Then, these through holes are periodically arranged in conformity with the contact pitch, and solder can be sufficiently flowed to both sides of the ground contact including inside these through holes.

Further, as shown in FIG. 3, the soldering structure of the present invention includes a ground strip 180 and a coaxial cable 23.
0 and the ground contact 160 between the rod-shaped solder 190
Heater chip 2 for solder melting from both sides after inserting
By making 50A and B contact the outer surface of the ground strip 180 at the same time, the rod-shaped solder is melted and the soldering process is performed.

FIG. 4 is an enlarged view of an essential part of the BB cross section of FIG. Further, FIG. 7 is an enlarged view of a main part of a conventional BB cross section. As shown in FIGS. 2 and 4, the ground contact 16
By providing a plurality of through holes 110 at the upper end portion of 0, the solder is filled into the through holes, which is sufficient as compared with the conventional example of FIG. 7 in which the ground contact 160 is not provided with the through holes 110. The peeling strength of the solder can be secured.

[0012]

As described above, according to the present invention,
By providing the through hole at the upper end of the grounding contact, the solder can be sufficiently flowed and filled into the through hole, so that the solder peeling strength in the terminal treatment of the shielded wire of the coaxial cable can be secured. The reliability of soldering can be remarkably improved as compared with the conventional contact. By adopting a structure in which soldering can be performed collectively, the assembly process can be shortened as compared with the conventional connector, so that the number of assembly steps can be reduced and the cost of the product can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of an electric connector for a multi-core coaxial cable according to the present invention.

FIG. 2 is a side view of the ground contact shown in FIG.

FIG. 3 is an explanatory diagram of a soldering structure of the present invention.

FIG. 4 is an enlarged view of an essential part of a BB cross section of FIG.

FIG. 5 is a perspective view of a conventional configuration.

6 is a cross-sectional view near the center of FIG.

FIG. 7 is an enlarged view of a main part of a conventional BB cross section.

[Explanation of symbols]

 10 ... Body 20 ... Contact alignment molded product 30 ... Grounding contact mating plate 40 ... Signal contact 50 ... Header mating side grounding contact 61 ... Cable crimping side grounding contact 70A, B ... Shell 80 ... Cable fixing plate 85 ... Integrated molding part 90 ... Coaxial cable 120 ... Body 130 ... Wire guide 140 ... Shell 150 ... Signal contact 160 ... Grounding contact 170 ... Contact alignment molded product 180 ... Grounding strip 210 ... Cable fixing plate 200 ... Shell 220 … Integrally molded product 230… Coaxial cable 231… Cable shield wire

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI Technical display location // H01R 13/04 Z 7331-5E (72) Inventor Kei Toyama 5500 Wakaki, Higashine, Yamane Prefecture Yamagata 3M Co., Ltd.

Claims (2)

[Claims] 1. An electrical connector for a multi-core coaxial cable having a signal contact and a ground contact, wherein the ground contact (160) is the coaxial cable (23).
An electrical connector for a multi-core coaxial cable, characterized in that a plurality of through holes (110) are periodically provided in an upper end portion (C) on the side where the shielded wire of (0) is connected. 2. The grounding contact (160) and grounding strips (1) located on opposite sides of the grounding contact (160).
The coaxial cable (230) between which a coating is removed to expose a shielded wire is sandwiched between 80), and the sandwiched portion is soldered so as to electrically connect to each other. Electrical connector for multi-core coaxial cable.