JPH0343755B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a coaxial cable connector, and more particularly to a coaxial cable formed at one end of a coaxial cable having a mutually insulated center conductor and a braided outer conductor within a jacket. The present invention relates to a connector for use in the industry and a method for manufacturing the same. This coaxial cable connector is particularly suitable for electrically interconnecting high frequency signal paths formed on the same or separate printed circuit boards.

(Prior Art) This type of coaxial cable connector is disclosed in, for example, Japanese Utility Model Application Publication No. 62-6618. This outline is shown in Figures 9A and 9B. In this connector, the center conductor (core wire) 2 of a coaxial cable 1 is welded to a contact 3, the periphery of the contact 3 is covered with a cylindrical outer conductor 4 via an insulator, and the outer conductor of the coaxial cable 1 is connected to the outer conductor of the coaxial cable 1. , by covering the exposed portion of the coaxial cable 1 with a shrink tube 5. Connection between the cylindrical outer conductor 4 and the outer conductor of the coaxial cable 1 is performed by inserting a ferrule and crimping from the outside (see FIG. 9A).

(Problems to be Solved by the Invention) However, in such a conventional coaxial cable connector, the coaxial cable 1 and the contact 3 are connected only by welding, and therefore the connection strength is weak. In addition, the insulating material around the outer periphery of the contact 3 is composed of two halves of the insulating material that have a recess for receiving the contact 3 and are connected by a hinge, so the structure is complicated and assembly work is difficult. The drawback was that it was unsuitable for assembly.

In view of these problems in the prior art, an object of the present invention is to provide a coaxial cable connector that has a robust and highly reliable structure, a simple manufacturing process, and can be automatically assembled, and a method for manufacturing the same. It is something.

(Means for Solving the Problems) A coaxial cable connector according to the present invention includes: a metal cylindrical body that is crowned on the outer periphery of one end of the coaxial cable, and with which the exposed braided outer conductor of the coaxial cable is folded back and comes into contact; a pin connection contact connected to the center conductor of the one end of the coaxial cable; an insert mold portion that covers and fixes the connection portion of the pin connection contact with the center conductor and the one end of the coaxial cable; and the pin. The present invention is characterized by comprising the pin connection contact insulated from the connection contact, the insert mold part, and a shield cover that is covered with the metal cylinder and is crimped to the metal cylinder.

Further, the method for manufacturing a coaxial cable connector according to the present invention includes: cutting off the outer sheath of one end of the coaxial cable to expose the braided outer conductor; and placing a metal on the outer sheath of the one end of the coaxial cable. capping a cylindrical body; folding back the exposed braided outer conductor on the side of the metal cylindrical body; connecting a pin connection contact to the center conductor at the one end of the coaxial cable; and making the pin connection. insert-molding an insulator to cover the connection portion between the contact for the pin connection and the center conductor and the one end of the coaxial cable; It is characterized in that it is covered with a shield cover insulated from the contacts and crimped onto the metal cylinder.

(Effects of the Invention) According to the present invention, since the connection (welding) part of the center conductor of the contact and one end of the coaxial cable are fixed by insert molding, the possibility of disconnection trouble etc. is eliminated and strength and reliability are improved. . Further, since the manufacturing method of the present invention consists of only simple operations, workability is good and automatic assembly is possible. In recent years, there has been a strong demand for coaxial cables to be smaller and more dense.
Although the diameters of coaxial cables are becoming smaller and smaller, the present invention is applicable to extremely small diameter coaxial cables and has extremely high operational value.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1 to 5 show each step of the manufacturing method of the present invention.

As shown in FIG. 1, at the tip of the coaxial cable 10, the center conductor 11 is exposed, and the braided outer conductor 14 for shielding, which is on the insulating layer 12 immediately above it, is folded back onto the jacket 13. At this time, the metal cylinder 15 is covered with the metal cylinder 15 so as to be in contact with the bottom of the folded braided outer conductor 14, and one part of the metal cylinder 15 is placed on top of the folded braided external conductor 14. The cylindrical bodies 15 and 16 are crimped onto the braided outer conductor 14.
The shape of this metal cylindrical body 15 is indicated by the - line in FIG.
This is shown in more detail in the sectional view along the line - FIGS. 7 and 8.

In this way, the braided outer conductor 14 is attached to the metal cylinder 1.
5.

Next, as shown in FIG. 2, the exposed center conductor 11 is welded to the pin connection contact 20 at the arrow A section. Pin connection contact 20
As shown in FIG. 6, this is a metal part having a pin receiving part 21 consisting of a pair of spring parts facing each other, and this pin receiving part 21 is for inserting a pin from a printed circuit board.

After welding, as shown in FIG. 3, the coaxial cable 10 and its tip end are wrapped and fixed with a resin part 17 formed by insert molding from above the welded part. At this time, the insert mold resin part 17 also covers the part where the braided outer conductor 14 is folded back, so as to completely wrap around this part.

Next, as shown in FIG. 4, the insulating housing 18 is placed over the contact 20 to remove the contact 20.
Furthermore, as shown in FIG. 5, a metal shield cover 19 is placed over the entirety of the metal shield cover 19, and this is crimped onto the metal cylinder 15 at the position of arrow B to form the braided outer conductor 14. is electrically connected (grounded) to the shield cover 19.

Finally, as shown in Figure 5, the coaxial cable 10
The parts other than the shield cover 19 are covered and protected with a heat shrink tube 30.

The connector of the present invention configured as described above is
This cable assembly is suitable for connecting printed circuit boards through pins, but it can also be used to create multipolar circuits by combining multiple boards, and has excellent shielding effects, making it a signal transmission cable assembly with a high level of electromagnetic shielding effect. It can also be applied to

[Brief explanation of drawings]

Figures 1 to 5 are side views sequentially showing each step of the manufacturing method of the present invention, Figure 6 is a partial plan view showing the state in Figure 2, and Figure 7 is a view taken along the line of Figure 1. A sectional view, FIG. 8 is a sectional view taken along the line of FIG. 1,
9A and 9B are a plan view and a sectional view, respectively, showing an example of this type of connector according to the prior art. 10... Coaxial cable, 11... Center conductor, 12... Insulating layer, 13... Outer cover, 14...
Braided outer conductor, 15...metal cylinder, 17...insert mold resin part, 18...insulation housing, 19...shield cover, 20...contact.

Claims (1)

[Claims] 1. Substantially surrounding the braided outer conductor at one end of which the jacket of a coaxial cable having a center conductor and a braided outer conductor has been cut, and surrounding at least a portion of the folded braided outer conductor and crimping. a metal cylindrical body, a pin connection contact connected to the center conductor of the one end of the coaxial cable, a connection portion of the pin connection contact with the center conductor, and a folded portion of the braided outer conductor. an insert mold portion for enclosing the pin connection contact, the pin connection contact insulated from the pin connection contact, and a shield cover that is covered with the insert mold portion and the metal cylinder and is crimped to the metal cylinder. Characteristic coaxial cable connector. 2. A method for manufacturing a coaxial cable connector formed at one end of a coaxial cable having a mutually insulated center conductor and a braided outer conductor in the outer sheath, comprising: cutting off the outer sheath at one end of the coaxial cable to remove the braided outer conductor; exposing an outer conductor; folding back the exposed braided outer conductor; and substantially surrounding the braided outer conductor at the one end of the coaxial cable and at least partially surrounding the folded braided outer conductor. capping and crimping a metal cylindrical body on the outer jacket as described above; connecting a pin connection contact to the center conductor of the one end of the coaxial cable; insert-molding an insulating material around the connection part with the conductor and the folded part of the braided outer conductor; A method of manufacturing a coaxial cable connector, comprising: covering the metal cylinder with a shield cover, and crimping the metal cylinder with a shield cover.