KR100477389B1 - Cable connection structure of electric connector - Google Patents

Abstract

In the cable connection structure of the present invention, the braids 108 of the plurality of coaxial cables 100 are soldered to the grounding member 30, and the signal conductors are covered by the internal insulation 110 and move forward under the grounding member 30. Extend. The ground plate 32 is formed in the ground member 30 so that the ground plate 32 protrudes from one edge of the ground member 30. Ground plate 32 and internal insulator 110 are offset from each other by approximately ½ pitch. The ground plate 32 and the signal conductor are simultaneously connected to the terminals 20a and 20b by pressing fit.

Description

Cable connector structure of electric connector

The present invention relates to a cable connection structure of an electrical connector, and more particularly to a cable connection structure of an electrical connector suitable for the connection of multiple coaxial cables.

British patent application GB226l328A describes an electrical connector for multiple coaxial cables comprising a signal contact and a ground contact, wherein the ground contact is a cavity having multiple through holes drilled at regular intervals in the area where the shielded wires of the coaxial cable are soldered. Share your reputation. A coaxial cable with the seed stripped away to expose the shielded wire is inserted between the ground contact and a ground strip arranged across the ground contact. The area where the coaxial cable is inserted is soldered to be electrically conductive.

EP-A-O59O796 describes an electrical connector for terminating both side signals and coaxial cables. To maintain the same interface pattern, the signal pins for the coaxial cable include a contact with an angled connection and a ground contact that contacts the shielding braid of the cable that is laterally offset. The housing includes a channel for arranging coaxial cables with respect to the signal contact ends and the ground contact ends.

Typically, the electrical connector 200 shown in FIG. 11 has a ground wire 204 so that a flat cable 200 located in the support frame 222 is connected to the electrical connector 200. This electrical connector 200 has an insulating base 206 and a ground plane 208 disposed on both sides of the base 206. The contact location portions 210 having the slots 212 protrude from the rear end of the ground plane 208. The ground wire 204 and the signal wire 202 of the flat cable 220 are respectively connected to the slot 212 and to a terminal of a press fit type (not shown).

Since the cable connected to the electrical connector described above is a flat cable, the ends of the ground wire 9304 and the signal wire 202 tend to extend in parallel with each other. However, in the case of individually separated circular electrical cables, it is difficult to arrange the ends of the cable such that these ends are parallel to each other and that the ground and signal wires are kept at a certain distance.

As a result, it is difficult to connect the end portions of the electric wire to the terminal. To avoid such problems, it is necessary to perform a separate task, such as when the wires are connected or soldering. In addition, in the case of soldering, deterioration of the housing due to heat is another possible problem.

In view of the above problems, it is an object of the present invention to provide a cable connection structure of an electrical connector that can be easily assembled even in the case of a circular detachable cable.

The cable connection structure of the cable connector provided by the present invention has an insulated housing having a plurality of ground terminals and signal terminals, and the ground and signal wires of the electric cable are connected to the corresponding terminals, and these terminals are press fit type terminals. It is characterized by. The cable assembly is used in which a grounding member having a plurality of protruding ground plates is disposed along one edge of the body. The ground wire is connected to the ground plate and the signal wire is moved approximately ½ pitch from the ground plate.

The present invention will be described with reference to the accompanying drawings.

1 is a plan view illustrating an electrical connector utilizing the cable connection structure of the electrical connector provided by the present invention.

FIG. 2 is a front view of the electrical connector shown in FIG. 1 seen in the direction indicated by arrow A. FIG.

3 is a plan view similar to FIG. 1 with the covers removed;

4 is a partially enlarged plan view showing the interior of an electrical connector.

5 is a plan view showing the connection of the grounding member to the carrier strip.

FIG. 6 is a side view of the grounding member of FIG. 5 as seen from arrow B. FIG.

7 is a plan view of an end portion of the cable sub-assembly.

8 is a side view of the end of the cable sub-assembly.

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

10 is a front view illustrating the relationship between the ground plane and the pressure contact.

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

The present invention will now be described in detail with reference to the accompanying drawings. 1 is a plan view showing the appearance of an electrical connector (hereinafter simply referred to as a "connector") using the cable connection structure of the electrical connector provided by the present invention. FIG. 2 is a front view seen from the direction indicated by arrow A of FIG. 1.

In Fig. 1, the electrical connector 1 is used to be attached to the insulating covers 4, 4 'used as facing each other as a two-part structure, and to a collecting connector (not shown in the figure). 4 ') with screws 6 located at both ends. The cable jacket 150 houses a number of coaxial cables 100 (hereinafter simply referred to as "cables") (see FIG. 3), and a heat shrinkable tube 152 that seals the ends of the cable jacket 150. . These covers 4, 4 ′ are fastened to each other in units by means of interlocking engagements such as screws. The metal shell 10 coupled with the mating connector protrudes from the front end 8 of the cover 4.

Next, the connector 1 seen from the engaging side (ie, viewed from the direction indicated by the arrow A) is described with reference to FIG. 2. The shell 10 has a long, thin rectangular shape, and inside the shell 10, two insulator-excluded contact (IDC) terminals 20 are arranged.

Next, the electrical connector 1 will be described in more detail with reference to FIGS. 3 and 4. FIG. 3 shows a top view similar to FIG. 1, but with the electrical connector 1 with the covers 4, 4 ′ removed. 4 is a partially enlarged plan view of the interior of the electrical connector 1. In FIG. 3, the metal braid 156 used as the shield protrudes from the end portion 154 of the cable jacket 150.

A number of independent cables 100 protrude from this end portion 154. Braid 156 surrounds cable 100. The outer insulator 101 of the cable 100 is also pulled away from the tip such that the inner insulator 110 (FIG. 4) of the cable 100 is exposed, and the cable 100 is connected to the corresponding IDC terminal. Detailed description of this structure will be given later. The front portion of each IDC terminal 20 is surrounded by a shell 10 to provide electromagnetic shielding. Similarly, the exposed cable 100 protruding from the leading end of the blade 156 and the rear of the IDC terminal 20 is covered by a shield cover 22 having a two-part structure. The shield cover 22 is fastened to the braid 156 by a catching hook disposed on the rear portion of the shield cover 22, and the front portion 23 of the shield cover 22 is secured to the periphery of the shell 10. Combined.

If possible, it is necessary to improve the impact resistance of the connection structure by sealing the inside of the shield cover 22 with a filler such as ethylene-vinyl acetate or the like. In addition, after the heat shrinkable tube 152 is moved in the direction of the arrow X from the position shown in the figure, the tube is contracted by heat to seal the outer cable jacket 150 and the blade 156.

A connection area between the cable 100 and the IDC terminal 20 will be described with reference to FIG. 4. The outer insulation 101 on the cable 100 is peeled off to expose the inner metal braid (grounding wire). The inner braid 108 is soldered to the ground member 30 by tangling and twisting one side. An internal insulator 110 of each cable 100 having a signal conductor is placed under the ground member 30 so that the internal insulator extends forward. The ground plate 32 protruding from the ground member 30 is connected to the ground terminal 20a, and the internal insulator 110 is connected to the signal terminal 20b. A detailed description of these connections will be described with reference to FIG. 5 and subsequent figures.

FIG. 5 is a plan view showing grounding members 30 and 30 'connected to carrier strip 34 prior to assembly. These grounding members 30 and 30 'and the carrier strip 34 are formed by punching out of the metal strip as an integral unit. In FIG. 5, the grounding members 30 and 30 'have a length such that the grounding members 30 and 30' are disposed inside each connector 10. As shown in FIG. Since the grounding member 30 and the grounding member 30 'are identical to each other, only the grounding member 30 will be described. The protruding ground plate 30 is formed at one edge of the main body 31 of the ground member 30 along its length as an integral component. The ground flat plate 32 is formed as an integral part of the main body 31 by being punched out of the main body 31 in the form of a rectangular flat flat plate, and at 90 ° such that the surfaces of the ground flat plate 32 are perpendicular to the surface of the main body 31. Twisted The spacing of these ground planes 32 is equal to the spacing of the ground terminals 20a. The other edge 38 of the main body 31 is connected to the carrier strip 34 via the connecting part 40 at a plurality of positions. A notch 42 is formed in the connecting part 40 near the edge 38 so that the ground member 30 can be easily removed from the carrier strip 34.

FIG. 6 is a side view of the grounding member 30 shown in FIG. 5 seen in the direction indicated by the arrow B. FIG. The shape of the ground plate 32 can be easily understood from this figure.

Next, FIG. 7 shows a plan view of the cable sub-assembly 120 assembled by connecting the cable 100 to the ground member 30. Each cable 100 is exposed by the same length from the braid 156 and is connected to the ground member 30 so that the cable 100 is positioned between adjacent ground plates 32. As described with reference to FIG. 4, when the braid 108 is connected to the flat plate forming body 31, the internal insulator 110 of the cable 1000 is interposed between the adjacent ground planes 32 as seen in the plan view. It extends from the position to become.

As described with reference to FIG. 4, when the braid 108 is connected to the flat body 31, the internal insulators 110 of the cable 100 are connected between adjacent ground plates 32 as seen in plan view. It extends from an intervening position. In particular, the ground plate 30 and the insulator 110 are alternately arranged at specific intervals. This spacing is equal to the spacing between the ground terminal 20a and the signal terminal 20b. Immediately upon installation of the cable 100, the ends of the insulator 110 are naturally arranged in an arc-shaped pattern shown in the figures, however, these ends are cut to form an even distribution prior to being connected to the terminal by pressure contact.

8 shows a side view of one end of the cable sub-assembly 120. From this figure, the end portion of the inner cable sub-assembly 120 under the plate-shaped body 31 has a substantially planar shape. The ground member 30 and the signal wires are insulated from each other by the internal insulator 110 so that there is no risk of short circuit.

As shown in FIG. 9, an opening 48 into which the mating connector is inserted is formed in the front portion of the shell 10. The insulated front housing 50 is held in the rear portion 49 by claws (not shown) at both ends of the shell 10. The method used to hold this front housing 50 in place is also possible with other methods such as couplings such as uneven parts. The front housing 50 has a base part 52 held in the shell and a support flat plate 54 protruding forward from an approximately center of the base part 52 as an integral part of the base part 52.

Grooves 58 in which the contact portions 56 of the terminals 20a and 20b are located are formed on both surfaces of the support plate 54. The tip 62 of the contact portion 56 of the terminals 20a and 20b is held at the tip of this groove 58. In the rear portion of the front housing 50, the insulated rear housing 60 is fastened to the front housing 50 by engaging engagement portions (not shown) at both ends of the rear housing 60. The front housing 50 and the rear housing 60 will be referred to collectively as "insulating housing 70". The position of each of the pressure contact portions 62a and 62b of the terminals 20a and 20b is moved forward in the rearward direction. Thus, the terminals 20a and 20b are staggered from each other along the length of the rear housing 60.

In the rear portion of the rear housing 60, a plurality of arms 68 having wedge-shaped projections 66 at their ends are arranged to be located between adjacent terminals 20a and 20b.

The inner insulator 110 and ground plate 32 of the cable subassembly 120 are pushed between the corresponding arms 68 and at the same time pressurized connections 62a and 62b of the corresponding terminals 20a and 20b. Is connected to. As a result, the connection can be easily performed without any complicated procedure such as soldering. Moreover, there is no influence on the insulating housing 70 due to the heat of soldering.

FIG. 10 illustrates the press fit of the ground plane to the slot 64a of the pressure contact 62a. Each ground plane 32 is approximately 0.25 mm thick and the amount "give" to the bond is approximately 0.07 mm. When the ground plate 32 is in the pressed state to the slot 64a, the slot 64a is slightly expanded, and the ground plate 32 is in contact with the slot 64a so that the ground plate 32 is in the slot 64a. The parts of the ground plane 32 which are in contact with) are cold welded to each other. It is appropriate that a relatively soft metal such as pure cooper or tough-pitch cooper be used as the material of the ground plate 32. Thus, the ground plane 32 is reliably held by the pressure connecting portion 62a. In the present embodiment, the cross-sectional shape of the ground plane 32 is rectangular, but this shape may be an ellipse or, in some cases, a shape in which the lower end enables a smooth press of the slot.

As mentioned above, although embodiment of this invention was described in detail, this invention is not limited only to this embodiment, A various deformation | transformation and a change are possible. For example, the braid 108 may be soldered to the flat body 31 of the ground member 30 without loosening the braid 108. In this case, the internal insulator 110 extends over the body 31.

Claims (3)

A plurality of ground terminals 20a for receiving the insulating housing 70, a plurality of signal terminals 20b for receiving a plurality of signal conductors, and respective inner metal blades 108 disposed around each of the signal conductors. In the electrical connector (1) having The cable subassembly 120 has a shape in which it is electrically coupled with the inner metal blade, and has a ground member 30 in which a plurality of protrusion-type ground plates 32 are disposed along one edge of the main body 31. The flat plate 32 extends from the main body 31 to be in engagement with the receiving portion on the ground terminal 20a which is located after the signal terminal 20b, and the signal conductors pass through the main body further and pass through the ground. Are coupled to signal terminals located next to the flat plate 32, and each of the signal terminals 20b has a shape capable of excluding an internal insulator 110 formed around the signal conductor, and The grounding plate 32 extends from the main body 31 and is twisted so as to be perpendicular to the main surface of the main body 31. 2. The cable connecting structure of an electrical connector according to claim 1, wherein each of said inner metal blades (108) is soldered to a main body. 4. The receiver of claim 1 or 3, wherein the receiving portion on the ground terminal 20a is a slot 64a so that the ground plate 32 or the signal conductor is pressed into the slot 64a. Cable connector structure of electric connector