JPS6039987Y2 - coaxial cable connector - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connector that can reliably and firmly connect the ends of high-frequency coaxial cables without deteriorating their characteristics. Explain.

The inner diameter of the coaxial cable connection tube 1 is smaller at the front section 1b than at the stepped section 1a provided at the center, and larger at the rear section 1c.

A conductive metal fitting 4 is mounted on the axis of the front portion 1b of the connecting tube 1 via an insulator 2.degree. 3, and a female thread 5 is also cut on the inner surface of the rear portion 1c.

A bottomed connection hole 6 is bored on the rear end axis of the conductive metal fitting 4 .

7 is a high frequency coaxial cable, 8 is a core wire, 9 is an insulating layer,
10 is an outer conductor made of knitted conductive thin wires, 11 is an insulating coating, and the front ends of the insulating layer 9 and the insulating coating 11 are cut off to a required length.

The exposed part 8a of the front end of the core wire 8 of the cable 7 inserted into the connection tube 1 from the rear is attached to the connection hole 6 of the conductive metal fitting 4, and the front end of the insulating layer 9 is inserted into the rear part 1c of the connection tube 1. It is fitted inside the conductive washer 12 fitted in the innermost part.

A conductive inner ring 13 is provided at the front end of the insulating sheath 11 of the cable 7.
The inward flange 14 is fitted onto the outside and is connected to the front end of the inner ring 13.
Fitted onto the base end of the exposed portion 10a at the front end of the external conductor 10,
The front end of the inward flange 14 has an exposed portion 10 between it and the washer 12.
An outward facing flange that holds the tube a and is also connected to the rear end is fitted into the rear portion 1c of the connecting tube 1.

The free end of the exposed portion 10a is folded back so as to be in contact with the outer surface of the inner ring 13, and is held between the inner ring 13 and the conductive outer ring 16 fitted inside the rear part 1c of the connecting tube 1. .

The rear part of the outward facing collar 15 and the rear part 1c of the connecting tube 1;
An annular gasket 17 and a washer 18 are fitted between the insulation coatings 11 of the cable 7 in order from the front.

A male thread 20 carved in the front part of a tightening nut 19 which is externally fitted onto the cable 7 is screwed into the female thread 5 on the inner surface of the rear part 1c of the connecting tube 1 from the rear. The department includes
A funnel-shaped portion 21 is provided that gradually expands toward the front end,
The front end of the funnel-shaped portion 21 presses the washer 18 from behind.

Inside the funnel-shaped part 21, a locking ring 22 having a conical outer surface and fitting into the funnel-shaped part 21 is attached to the insulation coating 11 of the cable 7 with a slight gap between it and the washer 18. It is fitted externally.

An inward projection 23 that bites into the insulation coating 11 is provided on the inner surface of the engagement ring 22 .

As mentioned above, to attach the connection tube 1 to the cable 7,
After attaching the inner ring 13, outer fitting 16, gasket 17, washer 18, and locking ring 22 to the front end of the cable 7 on which the tightening nut 19 is fitted, as shown in the figure,
into the rear part 1c of the connecting tube 1 fitted with the cable 7.
The exposed portion 8a of the core wire 8 is fitted into the conductive metal fitting 4.

Next, tighten the tightening nut 19 with the female thread 5 on the rear part 1c of the connecting tube 1.
Screw together and tighten.

The rear end of the connecting nut 24 is fitted onto the front end of the connecting tube 1, and the annular grooves 25 and 26 are cut into the outer surface of the front end of the connecting tube 1 and the inner surface of the rear end of the connecting nut 24, respectively. , by fitting the retaining ring 27, the two are engaged so as to be rotatable around the axis.

Further, a coaxial external conduit 28 facing forward is attached to the front end of the inner surface of the connecting tube 1, and is supported by an annular gasket 29 fitted inside the connecting nut 24.

The conductive metal fitting 4 is connected to the front end of the core wire 8 of the cable 7, and the outer conductor 10 is connected to an external conduit via the inner ring 13, outer ring 16, or washer 12 that is in contact with the exposed portion 10a, and the connecting tube 1. 28 and transmits a signal from the coaxial cable 7 to another cable or device connected by the connecting nut 24.

In the connector of the present invention having the above-mentioned structure, the outer conductor 10 of the cable 7 is folded back onto the outer surface of the inner ring 13, and the outer ring 16 and the washer 12 are connected to each other.
Since it is connected to the connecting tube 1 by sandwiching the wires together, there may be poor contact or the core wire 8 made of thin wire forming the outer conductor 10.
There have been no accidents such as short circuits.

In addition to the method of connecting the external conductor 10 as described above,
□ Since the inward protrusion 23 of the locking ring 22 bites into the insulation coating 11 of the cable 7, even if an abnormal tensile force is applied to the cable 7, it will not be pulled out from the connecting tube 1.

Furthermore, since soldering is not performed to connect the cable 7 and the connector, there is no risk of softening and deforming the insulating layer 9 made of synthetic resin and deteriorating the high frequency characteristics.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional front view of the connector of the present invention. 1... Connection tube, 1a... Step part, 1b.
...Front, 1c...Rear, 2,3...
...Insulating tube, 4...Conductive metal fittings, 5...
・Female thread, 6... Connection hole, 7... Coaxial cable, 8... Core wire, 8a... Exposed part, 9...・Insulating layer, 10...Outer conductor, 10a...Exposed part, 11...Insulating coating, 12...Washer, 13... Inner ring, 1
4...Inward Tsuba, 15...Outward Tsuba, 16
...Outer ring, 17...Gasket, 18
...Washer, 19...Tightening nut, 20
......Male thread, 21...Funnel-shaped part, 22
...... Attachment ring, 23 ...... Inward projection, 24
...Connection nut, 25゜26 ...Annular groove, 27 ... Retention ring, 28 ...External conduit, 29 ...Gas get.

Claims (1)

[Scope of claim for utility model registration] A coaxial cable connecting tube 1 made of a conductive material, in which the inner diameter of the rear portion 1c is smaller than the inner diameter of the front portion 1b, and a female thread 5 is carved on the rear end of the inner surface, and a connecting tube. a connecting nut 24 externally fitted on the front end of the connecting tube 1 so as to be able to rotate coaxially; and an external conduit coaxially attached to the front end of the connecting tube 1 inside the connecting nut 24 28, and the connecting tube 1 such that the front part is located inside the external conduit 2B.
A conductive metal fitting 4 is attached to the front axis of the connecting tube 1 via insulators 2 and 3, and the core wire 8 of the coaxial cable 7 is connected to the rear end of the connecting tube 1. A washer 12 is placed immediately after the metal fitting 4 and is fitted onto the front end of the insulating layer 9 of the coaxial cable 7, and a washer 12 is fitted onto the insulating coating 11 of the coaxial cable 7 and is placed on the front end of the outer conductor 10 of the coaxial cable 7. The outer conductor 10 is provided with an inward flange 14 to be fitted, and an outward flange 15 to be fitted into the rear part 1c of the connecting tube 1 at the rear end, and is folded back to the outer surface. An inner ring 13 is held between the inner ring 13 and a coaxial cable 7 which is folded between the inner ring 13, which is inserted into the rear part 1c of the connecting tube 1 and externally fitted into the inner ring 13 immediately after the washer 12. outer conductor 1 of
0, a gasket 17 that is fitted into the rear part 1c of the connecting tube 1 immediately after the outward facing collar 15 and externally fitted to the insulation coating 11 of the coaxial cable 8, and immediately after the gasket 17. , a washer 18 which is fitted onto the rear part 1c of the connecting tube 1 and fitted onto the insulation sheath 11 of the coaxial cable 7; The front end of the funnel-shaped part 21, which is screwed together from the rear and is provided on the front part of the inner surface and gradually expands toward the front, is connected to the tightening nut 19 that presses the washer 18, and the outer surface has a conical shape. Funnel-shaped part 21 of nut 19
The locking ring 22 has an inward protrusion 23 that bites into the insulation sheath 11 on the inner surface of the coaxial cable 7 and is fitted on the outside of the insulation sheath 11 of the coaxial cable 7. A coaxial cable connector in which at least one of the components is made of a conductive material.