JP3280535B2 - Coaxial cable connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial cable connector used for a power supply line for broadcasting and communication.

[0002]

2. Description of the Related Art As shown in FIG. 8, a high-frequency coaxial cable 1 used for a power supply line for broadcasting and communication generally has a hollow, tubular or tubular cable inner conductor 2 and a cable inner conductor 2 inside the cable core. A cylindrical or tubular cable outer conductor 4 is provided on the outer periphery of the conductor 2 with an insulating layer 3 interposed therebetween, and a sheath 5 as an outermost shell is provided on the outer periphery of the cable outer conductor 4.
And a compound 6 interposed therebetween. Then, when connecting the connector 7 to the end of such a coaxial cable 1, it is attached in the following procedure.

As shown in the figure, a predetermined length of a sheath 5 serving as an outer shell of the coaxial cable 1 is stripped, a compound 6 exposed from the inside is removed, and a predetermined length of the cable outer conductor 4 is exposed. The exposed outer periphery of the cable outer conductor 4 and the sheath 5 forming the end of the coaxial cable 1 are covered with a predetermined length to reinforce the end of the cable outer conductor 4 and to support the connector 7. The cylindrical body 8 is fitted and attached. After the body 8 is fitted to the end of the coaxial cable 1, the body 8 is attached by being tightened with a tightening nut or a belt. The distal end of the cable outer conductor 4 is tapered so as to be bent outward in the radial direction as shown in FIG. 9, and the distal end of the connector outer conductor 11 is abutted and joined to the tapered portion 9. Will be.

On the other hand, since the cable inner conductor 2 is formed in a cylindrical shape or a tubular shape, as shown in FIG. In addition to engraving the portion 12, the threaded portion 14 of the connector internal conductor 13 is threadedly engaged with the threaded portion 12 of the cable internal conductor 2. Will be joined.

After the connector outer conductor 11 is abutted against the cable outer conductor 4 and the connector inner conductor 13 is screwed into the screw portion 12 of the cable inner conductor 2, the connector outer conductor 11 is attached to the outer periphery of the cable outer conductor 4. The fastening bolt 17 is inserted through the flange portion 15 of the body 8 and the flange portion 16 formed on the outer peripheral portion of the connector outer conductor 11 and tightened to complete the mounting of the connector 7.

[0006]

By the way, when the connector 7 is attached to the high-frequency coaxial cable 1 used for the power supply line for broadcasting and communication, as described above, the tapered portion 9 is applied to the joint end of the cable outer conductor 4. In this case, a special tool is used, and applying the tapered portion 9 in a short time requires a skilled technique. Further, it is the same as forming a helical screw portion 12 of a predetermined length along the axial direction on the outer peripheral wall of the connection end portion of the cable internal conductor 2 and screwing the connector internal conductor 13 to the screw portion 12. In addition to the use of special tools, it required skilled skills. In particular, when connecting the connector 7, it is necessary to taper the cable outer conductor 4 and thread the cable inner conductor 2 and to screw the cable inner conductor 2 and the connector inner conductor 13 together. Thereafter, since the tightening operation is performed by the tightening bolt 17, there is a problem that the mounting of the connector 7 becomes complicated.

An object of the present invention is to provide a coaxial cable connector to which a connector can be easily and easily attached.

[0008]

According to a first aspect of the present invention, there is provided a coaxial cable having a cable inner conductor at an axial center portion and a corrugated tubular cable outer conductor at an outer periphery of the cable inner conductor via an insulating layer. In a coaxial cable connector having a connector outer conductor connected to a cut end and joined to a cable outer conductor formed at the cut end, a connector outer conductor abutted on the cable outer conductor has A cutting blade collar member having a plurality of cutting blades on an end surface of a ring member for providing electrical conductivity and cutting into the cutting end surface of the cable outer conductor for joining; and the cutting blade collar member and the connector outer conductor. And a tightening member for moving and tightening the cable outer conductor side .

According to a second aspect of the present invention, there is provided a coaxial cable having a hollow and cylindrical cable inner conductor at an axis portion and a corrugated tubular cable outer conductor at an outer peripheral portion of the inner conductor via an insulating layer. A coaxial cable connector having a connector inner conductor connected to the cut end and joined to the hollow portion of the cable inner conductor forming the cut end, and having a connector outer conductor abutted and joined to the cable outer conductor; An elastic connecting member provided on the connector inner conductor inserted into the hollow portion in the cable inner conductor and urged to expand radially outward; and a tip end of the connector outer conductor abutted on the cable outer conductor , Which has conductivity and cuts the cable outer conductor
Duplicate the end face of the ring member to cut into the end face and join.
A cutting blade collar member having a number of cutting blade portions, and a tightening member for moving and tightening the cutting blade collar member and the connector outer conductor so as to abut against the cable outer conductor side .

A first aspect of the present invention relates to a coaxial cable outside the cable.
The cut edge of the conductor, the tip of the connector outer conductor co the match by positioning the cutting collar member, tightening it
By moving the cutting edge collar member in the butting direction, the plurality of cutting edge portions provided on the end surface of the ring member of the cutting edge collar member bite into the cutting end surface of the cable outer conductor and are electrically connected closely. Will be.

[0011]

According to a second aspect of the present invention , when the connector internal conductor is further inserted into the hollow portion of the cable internal conductor, the elastic connection member provided on the connector internal conductor is urged within the cable internal conductor to radially move outside. As the diameter increases , the inner conductor of the connector and the inner conductor of the cable are also electrically and simultaneously connected at the same time .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the first invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, high-frequency coaxial cable 2
Reference numeral 1 designates a hollow or tubular cable inner conductor 22 at the shaft core and a tubular or tubular cable outer conductor 2 on the outer periphery of the cable inner conductor 22 via an insulating layer 23.
And a compound 25 on the outer periphery of the cable outer conductor 24. The sheath 25 as the outermost shell is coated on the compound 25. .

In order to cut the coaxial cable 21 constructed as described above and connect the connector 27 to the cut end 26, an O-ring 28 is interposed on the sheath 5 as the outermost shell to cover a predetermined length. Cut end 26 of coaxial cable 21
And a cylindrical body 29 for connecting and supporting the connector 27 is fitted and attached.
The body 29 has a threaded portion 31 formed at the distal end thereof for biting the outer peripheral portion of the coaxial cable 21, and a slit 32 having a predetermined length in the axial direction from the distal end side, and surrounding the slit 32. , Two fastening belts 33 are attached. A tightening bolt 35 for generating a tightening force in a direction in which both ends of the tightening belt 33 abut against each other is attached to the belt 34.

On the other hand, the connector 27 is provided with a connector outer conductor 36 which is abutted with and coupled to the cable outer conductor 24 formed on the cut end 26 so that the cut end 26 of the coaxial cable 21 can be inserted and connected. A connector inner conductor 39 is provided in the connector outer conductor 36 via insulators 37 and 38. The connector inner conductor 39 is inserted into the hollow cable inner conductor 22 for a predetermined length to be coupled.

In particular, the distal end of the connector outer conductor 36 has conductivity for cutting into and joining the cable outer conductor 24 forming the cut end 26 of the coaxial cable 1 as shown in FIGS. A cutting edge collar member 41 is provided. As shown in FIGS. 3 and 4, the cutting blade collar member 41 has a ring member 42, and the butting surfaces of the ring member 42 have substantially the same cross-sections protruding toward the cable outer conductor 24 at equal intervals. It has six triangular cutting blades 43 (43a to 43f).

As shown in FIG. 1, the connector outer conductor 36 and the cutting edge collar member 41 are connected to the cable outer conductor 2.
A tightening member 45 that is moved to abut against the connector 4 is fitted to the connector outer conductor 36. One end of the fastening member 45 is locked to the outer peripheral portion of the connector external conductor 36, and the other end is locked to the outer peripheral portion of the body 29. That is, the outer diameter of the outer conductor 36 of the connector is increased radially outward so that the fastening member 45 is
A flange portion 46 is formed to be engaged with an inner peripheral portion of one end of the body 29, and a screw portion 47 is formed on an outer peripheral portion of the body 29 so as to mesh with an inner peripheral portion of the fastening member 45. Therefore, the connector outer conductor 36 and the cutting edge collar member 41 are integrally formed by screwing the fastening member 45 to the outer peripheral portion of the body 29 and moving it in the axial direction.
The cutting edge cover member 41 moves to the side 4 and abuts the cable outer conductor 24.

Next, the operation of the above embodiment will be described.

The connector outer conductor 36 of the connector 27 is joined to the cable outer conductor 24 formed at the cut end 26 of the high-frequency coaxial cable 21 by the following procedure.

As shown in FIG. 1, after cutting the coaxial cable 21 to form a cut end, a body 29 is attached to the outer peripheral portion of the coaxial cable 21 and the body 29 is fixed by tightening with a tightening belt 33. .

On the other hand, the connector inner conductor 39 is inserted into the connector outer conductor 36 with the insulators 37 and 38 interposed therebetween, and the cutting edge collar member 41 is attached to the end of the connector outer conductor 36 to form the connector 27. I do. In order to abut the connector outer conductor 36 of the connector 27 and the cutting edge collar member 41 at the distal end thereof to the cable outer conductor 24 formed on the cut end 26 of the coaxial cable 21,
The fastening member 45 is engaged with the flange portion 46 formed on the connector outer conductor 36 and screwed into the screw portion 47 formed on the outer peripheral portion of the body 29. By screwing the fastening member 45 and moving it in the axial direction, FIG.
As shown in FIG. 4 and FIG. 4, the cutting blade collar member 41 moves toward the cable outer conductor 24 and is abutted, and the tightening force of the tightening member 45 gradually increases, so that the cutting blade cover member
The cutting edge portion 43 formed at 1 is cut into the cable outer conductor 24 and the compound 25 formed outside thereof. The cutting blade 43 cuts the connector outer conductor 24 in the circumferential direction while cutting the outer conductor 24 into the cable outer conductor 2.
4

As described above, the cutting edge collar member 41 bites into the cable outer conductor 24 by the tightening force of the tightening member 45, and the electrical connection between the cable outer conductor 24 and the connector outer conductor 36 is formed densely. Therefore, unlike the related art, it is unnecessary to provide the tapered portion 9 at the joint end of the cable outer conductor 24. In the present invention, the cutting blade collar member 41 is cut into the energized state only by fastening with the fastening member 45. The connector external conductors 36 can be easily formed because they can be formed and at the same time, the energized state is maintained. Further, since the cutting blade collar member 41 is moved in the joining direction and cuts the compound 25 to be electrically joined to the cable outer conductor 24, after cutting the cable 21 to form a cut end, There is no need to largely separate the sheath 5 and the compound 25 as an insulating layer,
The connector can be connected. In the present embodiment, the cutting blade collar member 41 cuts out only the compound 25, but the sheath 5 may be cut out together with the compound 25.

An embodiment according to the second invention will be described with reference to FIGS. 1, 5, 6, and 7.

Since the configurations of the coaxial cable 21 and the connector outer conductor 36 of the connector 27 have already been described, description thereof will be omitted.

As shown in FIG. 1, the connector 27 is provided with a connector inner conductor 39 which is inserted into the hollow portion 22a of the cable inner conductor 22 for a predetermined length and joined thereto. As shown in FIG. 5, a conductive elastic connecting member 51 is attached to the distal end of the connector internal conductor 39 so as to cover the distal end. The elastic connecting member 51 is made of an elastic plate material 5 having conductivity.
2 and is formed in such a manner that it is formed radially outward from the end portion to the center portion from the end portion, and a plurality of slits 53 are formed in the axial direction or the longitudinal direction. A concave portion 54 for holding the elastic connection member 51 is formed at the tip of the connector internal conductor 39 so as to hold the elastic connection member 51.

Then, by inserting the connector inner conductor 39 to which the elastic connecting member 51 is attached into the hollow portion 22a of the cable inner conductor 22, the elastic connecting member 51 is urged radially outward in the hollow portion 22a. As a result, it comes into contact with the inner wall in the cable inner conductor 22. In this manner, electrical connection can be achieved only by inserting the connector inner conductor 39 into the cable inner conductor 22.

Therefore, the connection of the connector 27 can be completed only by inserting the connector inner conductor 39 into the cable inner conductor 22 and tightening it with the tightening member 45.

FIGS. 6 and 7 show another embodiment of the elastic connecting member 51. FIG. The elastic connecting member 51 is formed of a conductive and elastic plate material into a cylindrical shape having an outer diameter larger than the inner diameter of the cable inner conductor 22 to be joined, similarly to the above embodiment. The elastic connecting member 51 has a cylindrical insertion portion 56 which is formed in the distal end portion of the connector internal conductor 39 in the axial direction with a predetermined depth in the axial direction and is inserted into the cable internal conductor 22. A plurality of slits 57 having a predetermined length are formed in the axial direction from the distal end portion. Therefore, the insertion portion 56 is connected to the hollow portion 2 of the cable inner conductor 22.
By inserting the insertion portion 56 with the diameter reduced, the insertion portion 56 expands in the radially outward direction, and comes into contact with the inner wall of the hollow portion 22a of the cable internal conductor 22 to be electrically connected.

[0029]

In summary, according to the present invention, the following excellent effects are exhibited.

(1) In the first aspect of the present invention, since the cutting outer collar member is provided for connecting the outer conductor of the cable to the outer conductor of the connector, the electrical connection between the outer conductor of the connector and the outer conductor of the cable can be easily performed. I can do it.

(2) According to the second aspect of the present invention, since the connector inner conductor is provided with the elastic connecting member which is urged radially outward,
The connection between the connector inner conductor and the cable inner conductor can be made easily and the electrical connection can be made dense.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing a coaxial cable connector of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a cable outer conductor is bitten and connected.

FIGS. 3A and 3B are views showing a cutting blade collar member, wherein FIG. 3A is a front view, and FIG. 3B is a view taken along line AA of FIG.

FIG. 4 is a perspective view showing a cutting state of a cutting blade collar member.

FIG. 5 is a sectional view showing a connector internal conductor.

FIG. 6 is a sectional view showing another embodiment of the connector internal conductor.

FIG. 7 is a perspective view showing a distal end portion of the elastic connection member.

FIG. 8 is a partial sectional view showing a conventional coaxial cable connector.

FIG. 9 is an enlarged view showing a conventional taper processing.

FIG. 10 is an enlarged view showing a main part of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Coaxial cable 22 Cable inner conductor 22a Hollow part 24 Cable outer conductor 26 Cutting end 27 Connector 36 Connector outer conductor 39 Connector inner conductor 41 Cutting blade collar member 45 Fastening member 51 Elastic connection member

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Naoto Akita 2-2-1 Jinnan, Shibuya-ku, Tokyo Inside the Japan Broadcasting Corporation Broadcasting Center (72) Inventor Akira Ishii 2-2-1 Jinnan, Shibuya-ku, Tokyo Japan Inside the Broadcasting Corporation Broadcasting Center (72) Inventor Shinichi Fujiwara 2-2-1 Jinnan, Shibuya-ku, Tokyo Japan Broadcasting Corporation Broadcasting Center (72) Inventor Makoto Otani 2-2-1 Jinnan, Shibuya-ku, Tokyo Japan Broadcasting Corporation Inside the Broadcasting Center (72) Inventor Tomohiko Sugimoto 2-2-1 Jinnan, Shibuya-ku, Tokyo Inside the Japan Broadcasting Corporation Broadcasting Center (56) References JP-A-5-275144 (JP, A) JP-A-3-101882 ( JP, U) Japanese Utility Model Showa 60-149074 (JP, U) Japanese Utility Model Application Hei 3-82570 (JP, U) Japanese Utility Model Utility Model 4-81383 (JP, U) Japanese Utility Model Utility Model Showa 58-120581 (JP U) JitsuHiraku Akira 60-184278 (JP, U) JitsuHiraku flat 3-103577 (JP, U) (58 ) investigated the field (Int.Cl. ^7, DB name) H01R 17/04 H02G 15/02 H02G 15 / 08

Claims (2)

(57) [Claims] 1. A cutting end of a coaxial cable having a cable inner conductor at a shaft center portion and having a corrugated tubular cable outer conductor at an outer periphery of the cable inner conductor via an insulating layer. In a coaxial cable connector having a connector outer conductor that is joined to a cable outer conductor formed at an end thereof, the connector is provided at a distal end of the connector outer conductor that is brought into contact with the cable outer conductor, and has electrical conductivity. Cutting cable outer conductor
Duplicate the end face of the ring member to cut into the end face and join.
A cutting blade collar member having a number of cutting blade portions, and a tightening member for moving and tightening the cutting blade collar member and the connector outer conductor so as to abut against the cable outer conductor side. Coaxial cable connector. 2. A cut end of a coaxial cable having a hollow and cylindrical cable inner conductor at an axis portion and having a corrugated tubular cable outer conductor at an outer periphery of the inner conductor via an insulating layer. A coaxial cable connector having a connector inner conductor joined to the hollow portion of the cable inner conductor forming the cut end and having a connector outer conductor abutted and joined to the cable outer conductor. An elastic connection member provided on the connector inner conductor inserted into the hollow portion inside and urged to expand radially outward, and provided on a distal end portion of the connector outer conductor abutting on the cable outer conductor. A plurality of cutting blades on the end face of the ring member to have electrical conductivity and cut into the cut end face of the cable outer conductor for joining;
A connector for a coaxial cable, comprising: a cutting blade collar member having a cutting member; and a tightening member for moving and tightening the cutting blade collar member and the connector outer conductor so as to abut the cable outer conductor side. .