JPH1021977A - Cable connection structure for electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable connection structure for an electric connector in which multi-conductor cables separated from each other are formed as a sub-assembly to be easily connected to terminals. SOLUTION: Braided wires of plural coaxial cables 100 are soldered to a grounding member 30, and signal conductors are coated with inner insulation bodies 110 to pass under the grounding member 30 to be extended forward. On the grounding member 30, grounding plates 32 are protruded from one side edge. The grounding plates 32 and the inner insulation bodies 110 are dislocated from each other by about a half pitch. In this condition, a cable sub-assembly is composed. In the cable sub-assembly, the grounding plates 32 and the signal conductors coated with the inner insulation bodies 110 are totally pressureconnected to corresponding pressure contact type terminals 20a, 20b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable connection structure of an electric connector, and more particularly to a cable connection structure of an electric connector suitable for connecting multiple coaxial cables.

[0002]

2. Description of the Related Art Conventionally, as an electrical connector for a multi-conductor cable, an electrical connector 200 shown in FIG. 11 is known. The electric connector 200 has a signal line 202 and a ground line 204, and is connected to a flat cable 220 located on a holding frame 222. Electrical connector 2
00 has an insulating base 206 and ground plates 208 disposed on both sides thereof. At the rear end of the ground plate 208, an electric wire connection portion having a slot 212 is protruded. The ground wire 204 and the signal wire 202 of the flat cable 220 are connected to the above-described slot 212 and a press-contact-type terminal (not shown) by pressing.

[0003]

Since the flat cable 220 is connected to the above-mentioned electrical connector, the ground wire 20 is
4, and it is easy to extend the ends of the signal lines 202 in parallel. However, in the case of individually separated electric cables, it is difficult to align the cable ends in parallel, and to maintain the ground lines and signal lines at predetermined intervals. Therefore, it is difficult to press-connect the end to the terminal. In order to avoid such a problem, in the case of connection, a time-consuming operation such as soldering is required. Also, in the case of soldering, there is a possibility that a problem of deterioration of the housing material due to heat may occur.

[0004] In view of the above, it is an object of the present invention to provide a cable connection structure of an electric connector that can be easily assembled even with a separated cable.

[0005]

A cable connection structure for an electric connector according to the present invention includes an insulating housing for holding a plurality of grounding and signal terminals, and the terminal corresponding to a ground line and a signal line of an electric cable. In the cable connection structure of the electrical connector, the terminal is a pressure contact type terminal, a grounding member having a plurality of grounding plates protruding along one side edge of the plate-shaped main body is provided, and the grounding wire is provided. A cable sub-assembly connected to the ground plate and arranged so that the signal line is shifted from the ground plate by substantially a half pitch,
The ground plate and the signal line of the cable sub-assembly are connected by pressure connection to the corresponding ground and signal terminals, respectively.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a plan view showing an external appearance of an electric connector (hereinafter simply referred to as a connector) using a cable connection structure of an electric connector of the present invention. FIG. 2 is a front view as viewed from an arrow A in FIG.

Referring to FIG. 1, an electric connector 1 has a two-piece resin cover 4 used for facing each other,
4 ', and at both ends of the covers 4, 4', there are screw portions 6 for attaching to mating connectors (not shown).
In the figure, reference numeral 150 denotes a number of coaxial cables 100 (see FIG. 3).
(Hereinafter simply referred to as a cable) indicates an insulating jacket, and 152 indicates a heat-shrinkable tube for sealing an end of the jacket. The covers 4 and 4 'are latched to each other, or fixed together by screws or the like. From the front end 8 of the cover 4, a metal shell 10 that fits with the mating connector protrudes.

[0010] Next, referring to FIG.
The connector 1 as viewed from above will be described. The shell 10 has an elongated and substantially rectangular shape, and has terminals 20 arranged in two rows. In the figure, reference numeral 14 denotes a screw to be screwed with the mating connector.

Next, referring to FIG. 3 and FIG.
Will be described in more detail. FIG. 3 is a plan view similar to FIG. 1 with the covers 4, 4 'removed. FIG. 4 is a partially enlarged plan view of the inside of the connector 1. FIG.
Referring to, a metallic braided wire 156 for shielding extends from the end 154 of the jacket 150, and further a number of independent cables 100 extend. A braided wire 156 surrounds the bundle of cables 100. The cable 100 has its insulator 101 peeled off at its tip and the inner insulator 110
(FIG. 4) are exposed and connected to corresponding terminals 20. Details of this configuration will be described later. The front of each terminal 20 is surrounded by a shell 10 for electromagnetic shielding. Similarly, the rear part of the cable 100 and the terminal 20 exposed from the front end of the braided wire 156 is covered by the shield cover 22 having a two-piece structure. The shield cover 22 is fixed to the braided wire 1 by locking claws 24, 24 'provided at the rear portion.
The front portion 23 of the shield cover 22 is attached by engaging with the outer periphery of the shell 10.

It is desirable that a filler such as ethylene vinyl acetate is sealed in the shield cover 22 to improve the impact resistance of the connection structure. The heat-shrinkable tube 152 is moved from the position shown in the figure in the direction indicated by the arrow X, and then shrunk by heat so that the end 154 of the jacket 150 and the braided wire 15
Seal 6

Referring to FIG. 4, cable 100 and terminal 2
A connection portion with 0 will be described. The insulator 101 outside the cable 100 is peeled off to expose a metal braided wire (ground wire) 108, and the braided wire 108 is unwrapped and bundled to one side and soldered to the ground member 30. An inner insulator 110 of the cable 100 including a signal conductor, that is, a signal line (not shown) extends under the ground member 30 and forward. The ground plate 32 protruding from the ground member 30 is connected to the ground terminal 20a, and
0 is connected to the signal terminal 20b. Details of these connections will be further described with reference to FIGS.

FIG. 5 is a plan view showing a state in which the grounding members 30 and 30 ′ are connected to the carrier strip 34. Grounding members 30, 30 'and carrier strip 34
Is stamped and formed integrally from a metal strip. In the figure, the grounding members 30, 30 'each have a length arranged in the connector 1. Grounding member 30 and grounding member 3
Since 0 'is the same, the grounding member 30 will be described below. On the side edge (one side edge) 36 of the plate-shaped main body 31 of the grounding member 30, a grounding plate 32 is integrally protruded along the longitudinal direction of the plate-shaped main body 31. Ground plate 3
Reference numeral 2 denotes a rectangular flat plate that is punched integrally with the plate-shaped main body portion 31 and then twists 90 ° so that its plate surface is orthogonal to the plate surface of the grounding member 30. The distance between the ground plates 32 matches the distance between the ground terminals 20a. The other side edge 38 of the plate-shaped main body 31 is connected to the carrier strip 34 at a plurality of locations via a connecting portion 40. A notch 42 is formed near the side edge 38 of the connecting portion 40 so that the ground member 30 can be easily cut off from the carrier strip 34.

FIG. 6 shows the grounding member 30 shown in FIG.
It is the side view seen from. From this figure, the shape of the ground plate 32 can be easily understood.

Next, FIG.
0 is a plan view showing a state where the cable sub-assembly 120 is configured by connecting 0. FIG. Each cable 100 is exposed to approximately the same length from the braided wire 156 and is adjacent to the aforementioned ground plate 3.
2 with respect to the ground member 30. As described with reference to FIG. 4, when the braided wire 108 is connected to the plate-shaped main body 31, the insulator 110 inside the cable 100 extends from substantially the middle of the adjacent ground plate 32 in the plan view. That is, the ground plate 32 and the insulator 11
0s are alternately arranged at predetermined intervals. This interval is equal to the interval between the ground terminal 20a and the signal terminal 20b. Immediately after the cable 100 is arranged, the tip of the insulator 110 has an arc shape as shown in the figure, but when pressed against the terminal, the tip is cut and aligned.

A side view of the end of the cable subassembly 120 is shown in FIG. It can be easily understood that the inner insulator 110 extends below the plate-shaped main body 31. The end of the cable subassembly 120 has a shape that is extremely flat. The ground member 30 and the signal line are connected to the inner insulator 11.
Since it is insulated by 0, there is no possibility of short circuit.

Next, the cable subassembly is connected to the connector 1.
FIG. 9 is a cross-sectional view showing a state of connection with the IX-IX line of FIG. An opening 48 into which a mating connector is inserted is formed in a front portion 47 of the shell 10, and a rear portion 4 is formed.
9, an insulating front housing 50 is held at both longitudinal ends of the shell 10 by claws (not shown). The holding method may be other means such as uneven engagement. The front housing 50 has a base portion 52 held by the shell and a holding plate 54 integrally and protruding forward from substantially the center of the base portion 52. The holding plate 54 has terminals 20
Grooves 58 for arranging the contact portions 56a and 20b are formed on both surfaces. The tip of the groove 58 has a bag shape, and the tip 62 of the contact portion 56 of the terminal 20a, 20b is held therein. An insulating rear housing 60 is provided at the rear of the front housing 50 at both longitudinal ends thereof.
And latched (not shown) to be fixed. The front housing 50 and the rear housing 60 are collectively referred to as an insulating housing 70. Terminal 2 is provided on rear housing 60.
0a and 20b are arranged in advance. Terminals 20a and 20
In b, the positions of the press contact portions 62a and 62b are displaced forward and backward, respectively. Therefore, the terminals 20a and 20b are staggered (staggered) along the longitudinal direction of the rear housing 60.

In the rear portion of the rear housing 60, a number of arms 68 having wedge-shaped protrusions 66 at the tip end are arranged so as to be located between the adjacent terminals 20a and 20b. The ground plate 32 and the inner insulator 110 of the cable subassembly 120 are pressed between the corresponding arms 68 and are collectively press-connected to the press-contact portions 62a, 62b of the corresponding terminals 20a, 20b, respectively. Is done. Thus, the connection can be made extremely easily without going through complicated steps such as soldering. Further, the heat at the time of soldering does not adversely affect the insulating housing 70.

FIG. 10 shows that the ground plate 32 is
The state of press-fitting into the slot 64a of 2a is shown. The ground plate 32 has a thickness of about 0.25 mm and an engagement margin of about 0.07 mm. Ground plate 3 in slot 64a
2, the slot 64a slightly expands, the ground plate 32 slides on the slot 64a so as to be pressed and sandwiched from both side edges of the slot 64a, and the portion of the ground plate 32 that contacts the slot 64a is cold-welded. You. The grounding member 30 is preferably made of a relatively soft metal such as pure copper or tough pitch copper. Therefore, the ground plate 32 is firmly held at the press contact portion. In the present embodiment, the cross-sectional shape of the ground plate 32 is substantially rectangular, but may be an elliptical shape, or may be a shape with a pointed lower portion in order to smoothly press-fit the slot.

Although the preferred embodiment of the present invention has been described in detail, the present invention is not limited to this embodiment.
It goes without saying that various modifications and changes are possible.
For example, the braided wire 108 may be soldered to the plate-shaped main body 31 of the ground member 30 without unraveling. In that case the inner insulator 1
10 extends above the plate-shaped main body 31.

[0020]

According to the present invention, there is provided a cable connecting structure for an electrical connector, comprising a grounding member having a plurality of grounding plates protruding along one side edge of a plate-shaped main body, and connecting a grounding wire of the cable to the grounding member. The signal line is even a half pitch with the ground plate to form a cable sub-assembly, and the ground plate and the signal line are press-connected to the corresponding press-contact type terminals of the electrical connector, and the following effects are obtained.

That is, the electric cable can be easily terminated by merely pressing the end of the cable sub-assembly to the electric connector without performing a complicated operation such as soldering.
There is no concern that the insulation housing will be degraded by the heat of soldering.

[Brief description of the drawings]

FIG. 1 is a plan view showing an external appearance of an electric connector using a cable connection structure for an electric connector of the present invention.

FIG. 2 is a front view of the electrical connector of FIG.

FIG. 3 is a plan view similar to FIG. 1 with a cover removed.

FIG. 4 is a partially enlarged plan view of the inside of the electrical connector.

FIG. 5 is a plan view showing a state in which a grounding member is connected to a carrier strip.

FIG. 6 is a side view of the grounding member shown in FIG.

FIG. 7 is a plan view of an end of the cable subassembly.

FIG. 8 is a side view of the end of the cable subassembly.

FIG. 9 is a sectional view taken along line IX-IX of FIG. 4;

FIG. 10 is a front view showing a relationship between a ground plate and a press contact portion.

FIG. 11 is a perspective view showing a cable connection structure of a conventional electrical connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrical connector 20a Grounding terminal 20b Signaling terminal 30 Grounding member 31 Plate body 32 Grounding plate 36 One side edge 70 Insulating housing 108 Grounding line 110 Signal line 120 Cable subassembly

Continuation of front page (72) Inventor Toru Kugita 3-5-8 Hisamoto, Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture Japan MP Co., Ltd.

Claims (1)

[Claims] 1. A cable connection structure for an electrical connector comprising: an insulating housing for holding a plurality of grounding and signal terminals; and connecting a ground wire and a signal wire of an electrical cable to the corresponding terminals. Is a pressure contact type terminal, a grounding member having a plurality of grounding plates protruding along one side edge of the plate-shaped main body is provided, the grounding line is connected to the grounding plate, and the signal line is connected to the grounding plate. Wherein the cable subassembly is disposed so as to be shifted from the cable subassembly by approximately a half pitch, and the grounding plate and the signal line of the cable subassembly are press-connected to the corresponding grounding and signal terminals, respectively. Connector cable connection structure.