JPH0817519A - Coaxial cable connector - Google Patents

Abstract

(57) [Abstract] [Purpose] To connect a coaxial cable to a device without applying an external force in the twisting direction. [Structure] The center contact 7 is mounted via a second insulator 9 at the base of the connector body 1 side to be screwed and assembled to the device.
A split clamp 12 that holds the outer conductor Cb of the coaxial cable C is arranged on the outer peripheral side of the ferrule 8 that holds the diameter so that the diameter can be reduced. Ferrule 8 at one end on the outer peripheral side of split clamp 12
The holding main cylinder 10 with which the base portion is engaged is arranged, and the tightening nut 16 for pressing the split clamp 12 toward the base portion is screwed to the other end side of the holding main cylinder 10. Holding main cylinder 10
An assembled screw cylinder 18 having an inner diameter smaller than the outer diameter of the one end of the holding main cylinder 10 is rotatably disposed on the outer peripheral side of the holding main cylinder 10, and a female screw with which the assembled screw cylinder 18 is screwed is attached to the connector body 1. Is provided on the inner peripheral surface of the and the fastening metal fitting 20 is provided on the outer peripheral surface corresponding to the inner peripheral surface.
A male screw is formed by screwing the female screw formed on the inner peripheral surface of the.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a connector body having a male body having a male screw threaded at one end, and a fastening metal fitting screwed to the other end of the connector body. The present invention relates to a coaxial cable connector in which an end of a coaxial cable is arranged in a lumen.

[0002]

2. Description of the Related Art The end of a coaxial cable, which is arranged in an inner cavity composed of a connector body and a fastening metal fitting, connects an inner conductor to a center contact, and the outer conductor is between the outer conductor and the inner insulator. It is generally connected to a connector so as to be held by a inserting clamp portion of a ferrule which has been inserted into a connector and a split clamp, for example, as shown in Japanese Patent Publication No. 59-31193.

[0003]

In the conventional example, when the outer conductor is held between the split clamp and the ferrule, that is,
In order to connect the outer conductor to the connector electrically and mechanically, it is necessary to tighten the connector body attached to the device while tightening the fastening metal fitting to the threaded portion of the connector body to reduce the diameter of the split clamp. Therefore, during the tightening operation of the tightening fitting, friction resistance tends to occur in the coaxial cable, which may twist and affect the electrical characteristics.

The present invention has been made in view of such drawbacks of the conventional example, and an object thereof is to provide a connector for a coaxial cable in which a twisting phenomenon does not occur in the coaxial cable.

[0005]

An inner portion of a coaxial cable is provided in a lumen portion composed of a connector main body having one end screwed into an apparatus for assembly and a fastening metal fitting screwed into the other end of the main body. In a coaxial cable connector that accommodates a center contact that connects to a conductor and a split clamp that connects to an outer conductor, the coaxial cable is attached to the outer periphery of the ferrule that holds the center contact via an insulator at the base of the connector body. A split clamp for holding the outer conductor is arranged so that the diameter can be reduced, and a holding main cylinder having the base of the ferrule engaged at one end is arranged on the outer peripheral side of the split clamp, and the other end side of the holding main cylinder is arranged. And a tightening nut that presses the split clamp toward the base portion is screwed, and an assembled screw cylinder having an inner diameter smaller than the outer diameter of the one end of the holding main cylinder is rotated on the outer peripheral side of the holding main cylinder. Freely Then, a female screw for screwing the assembled screw cylinder is provided on the inner peripheral surface of the connector body, and a male screw for screwing the female screw formed on the inner peripheral surface of the tightening metal fitting is formed on the outer peripheral surface corresponding to the inner peripheral surface. It will be configured.

[0006]

[Operation] When the connector body is screwed to the equipment, the inner conductor of the coaxial cable that has passed through the tightening metal fitting is connected to the center contact, and the tightening nut is screwed into the holding main cylinder, the outer conductor becomes a reinforcing sleeve. Even if the coaxial cable is twisted when it is clamped by the split clamp and the tightening nut is tightened, the holding main cylinder is attached to the coaxial cable side, so the coaxial cable returns to its original state and external force is applied to the coaxial cable. The connector usage status can be obtained by screwing the assembly nut and the tightening metal fitting to the connector body without giving them.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of a coaxial cable connector according to the present invention. FIG. 1 is a partially cutaway front view immediately before assembling each part, and FIG. 2 is a partially cutaway front view in the assembled state. , Fig. 3
1 is a partially enlarged view of FIG. 1, FIG. 4 is a partially cutaway front view of the second embodiment, and FIG. 5 is a partially cutaway front view of the third embodiment.

In the figure, reference numeral 1 is a male screw 2 which is screwed into the device at one end.
And a female thread 3 on the inner peripheral surface of the other end and a male thread 4 on the outer peripheral surface of the connector body, and the first insulator 5 is attached to the inner peripheral side of the one end side of the connector body. Body 5
A through hole 6 is provided on the axis of so that the tip portion 7a of the center contact 7 is supported through.

The center contact 7 is supported by the base cylindrical portion 8b of the ferrule 8 via the second insulator 9 assembled on the inner peripheral side of the ferrule 8, and the ferrule 8 includes the base cylindrical portion 8b and the inserted cylindrical portion 8a. And one end of the holding main barrel 10 is screwed onto the base barrel portion 8b of the ferrule 8 to form a sandwiching gap 11 between the holding main barrel 10 and the sandwiching barrel portion 8a. A split clamp 12 is arranged so as to be mounted in the insertion gap 11 between the outer peripheral side of the ferrule 8, that is, between the inserted insertion tube portion 8a and the holding main tube 10.

The split clamp 12 can be reduced in diameter by a slit 12 'formed on the peripheral surface, and the outer peripheral surface at one end on the side of the central contact 7 is tapered, and the holding main cylinder is adapted to correspond to this tapered shape. Tapered surface 1 on the inner peripheral surface of 10
3 is provided.

In the figure, 14 is a pressing ring disposed inside the main holding cylinder 10 so as to be adjacent to the split clamp 12, and the pressing ring 14 has inner and outer diameters that are always adjacent to the split clamp 12. The holding main cylinder 1 is provided with a male screw portion 17 into which a tightening nut 16 having a pressing edge 15 in contact with 14 is screwed.
The male threaded portion 1 provided at the other end corresponding to the one end of 0
Assembled screw cylinder 18 through which 7 is threadedly passed through is held main cylinder 10,
The outer peripheral side is rotatably assembled.

The assembled screw cylinder 18 is locked to the one end side of the holding main cylinder 10 so that its movement is restricted and has a male screw 19 which is screwed to the female screw 3 of the connector body 1 on the peripheral surface.

Reference numeral 20 denotes the male screw 4 of the connector body 1.
The inner peripheral surface of the internal thread 21 is screwed to the connector body 1, and the connector body 1 accommodates the central contact 7, the split clamp 12, and the like. is there.

Then, the male screw 2 is screwed onto the device to attach the connector body 1, the center contact 7 is attached to the inner conductor Ca of the coaxial cable C which is passed through the tightening fitting 20, and the inserting portion of the ferrule 8 is inserted. When 8a is mounted between the outer conductor Cb and the inner insulator Cc and the tightening nut 16 is tightened, the pressing ring 14 pressed by the pressing edge 15 presses the split clamp 12 toward the base tube portion 8b of the ferrule 8. Then, the split clamp 12 is reduced in diameter by the tapered surface 13 of the holding main cylinder 10 and is pressed against the outer jacket Cd of the coaxial cable C, so that the sandwiching tubular portion 8a of the ferrule 8 and the split clamp 12 are joined to the outer jacket Cd and the outer jacket Cd. Hold the outer conductor Cb inside the Cd to be held, then screw the assembling screw cylinder 18 into the female screw 3 of the connector body 1, and screw the fastening metal fitting 20 into the male screw 4 to use. Than it is.

Incidentally, in the second and third embodiments shown in FIGS. 4 and 5, the front member 20 for screwing the fastening metal fittings 20 to each other is used.
It is composed of a and a rear member 20b.

In the figure, 23 is a watertight rubber ring, and 24 is a gasket.

Further, in the embodiment, by operating the tightening nut, the split clamp is pressed through the pressing ring to reduce the diameter, but the pressing ring is omitted and the tightening nut is omitted. Alternatively, the split clamp may be directly pressed.

[0018]

The present invention has the configuration described above,
Assemble the ferrule and the center contact to the coaxial cable outside the connector body or tightening fitting, and after assembling, place the ferrule inside the connector body without applying external force in the twisting direction to the coaxial cable. It can be arranged, and the assembly work of each part can be done smoothly.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view immediately before assembling each part.

FIG. 2 is a partially cutaway front view of the assembled state.

FIG. 3 is a partially enlarged view of FIG.

FIG. 4 is a partially cutaway front view of the second embodiment.

FIG. 5 is a partially cutaway front view of the third embodiment.

[Explanation of symbols]

 1 Connector Body 7 Center Contact 8 Ferrule 9 Second Insulator 10 Holding Main Cylinder 12 Split Clamp 14 Pressing Ring 16 Tightening Nut 18 Assembled Screw Cylinder 20 Tightening Metal C Coaxial Cable Cb External Conductor

Claims (1)

[Claims] 1. An internal conductor of a coaxial cable is connected to an inner cavity portion having a connector body whose one end is screwed to be assembled to a device and a fastening metal fitting which is screwed to the other end of the body. In a coaxial cable connector that accommodates a split clamp that connects to the center contact or outer conductor, holds the outer conductor of the coaxial cable on the outer periphery of the ferrule that holds the center contact via an insulator at the base of the connector body. A split clamp is arranged so that its diameter can be reduced, and a holding main cylinder with the base of the ferrule engaged at one end is arranged on the outer peripheral side of the split clamp, and the split clamp is provided at the other end side of this holding main cylinder. A tightening nut that presses in the direction of the base is screwed, and an assembly screw cylinder having an inner diameter smaller than the outer diameter of the one end of the holding main cylinder is rotatably arranged on the outer peripheral side of the holding main cylinder. , This assembly screw For a coaxial cable, a female screw for screwing the slave tube is provided on the inner peripheral surface of the connector body, and a male screw for screwing the female screw formed on the inner peripheral surface of the tightening metal fitting is formed on the outer peripheral surface corresponding to the inner peripheral surface. connector.