JP2532257Y2 - High frequency coaxial cable connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a high-frequency coaxial cable connector used for connecting a coaxial cable, an amplifier, a distributor and the like in a coaxial cable transmission system.

<Prior Art> As shown in FIG. 4, a coaxial cable 1 in a coaxial transmission system usually employs wiring using an overhead wire 2, and an amplifier and a distributor 3 connected to this coaxial cable 1 also use an overhead wire 2 or The coaxial cable 1 is suspended on a pillar, and the coaxial cable 1 is connected to the amplifier and the distributor 3 using a connector 4 as shown in FIG.

FIGS. 6 and 7 show the above-mentioned conventional connector 4, in which a fastening member 5 fixed to the coaxial cable 1 is screwed and connected to a shell 7 serving as a male connector. An O-ring 9 and a gasket 10 are incorporated in the fastener 5 for waterproofing.

The shell 7 is provided with a contact flange portion 11 for screwing operation on an outer peripheral surface, and a connection screw 12 is coupled to a tip portion thereof,
Screw hole 14 of female connector seat 13 provided in amplifier and distributor 3
Then, the coaxial cable 1 is connected to the amplifier or the distributor 3 by screwing the connection screw 12 of the shell 7.

By the way, the coaxial cable 1 and the amplifier and the distributor 3 suspended on the overhead wire 2 are slightly tied to the screw connection portion of the connector with the lapse of time after the connector is fastened due to the swaying, vibration and the wiring of the cable due to the wind. The torque acts in a direction to loosen the torque, and if vibration is applied to the torque, the torque is accelerated.

As shown in the connection state in FIG. 6, the clamp 5 compresses the O-ring 9 and the gasket 10, and this is the clamp 5
And the torque in the direction of loosening the screw of the threaded portion of the shell 7 and effectively acts on vibration.

It is also taken into consideration that the shell 7, the clamp 5, and the coaxial cable 1 are covered with a series of heat-shrinkable tubes or taping 15, so that the clamp 5 itself can be screwed by tightening to a specified torque. The torque in the direction of loosening can be cleared.

<Problem to be solved by the invention> However, the contact portion between the shell 7 and the female connector seat 13 is
Since the contact flange portion 11 only presses against the end face of the female connector seat 13, the connection screw 12 and the screw hole 14 of the shell 7 are provided.
Has no resistance to vibration and loosening, so when torque in the loosening direction acts, the shell 7 and the female connector seat 13
This causes a problem that frequent occurrence of troubles such as leakage and noise mixing due to poor contact occur.

In view of the above, an object of the present invention is to provide a connector for a high-frequency coaxial cable capable of preventing loosening of a screw connecting a shell and a female connector seat with a simple structure in order to solve the above problems. It is assumed that.

<Means for Solving the Problems> In order to solve the above-described problems, the present invention proposes that the contact flange portion of the male connector screwed to the female connector seat is closer to the outer periphery than the outer diameter of the connection screw of the male connector. And a set screw for tightening the female connector seat is provided so as to be parallel to the axis of the connector.

<Operation> After the male connector is screwed into the female connector seat and connected, tighten the set screw provided on the contact flange so that it presses against the end face of the female connector seat, and the male connector is fixed to the female connector seat. As a result, the screws can be securely prevented from loosening.

<Embodiment> Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
Description will be made based on the drawings.

Note that the same parts as those in the conventional example shown in FIGS. 6 and 7 are denoted by the same reference numerals and description thereof will be omitted.

As shown in FIGS. 1 to 3, the contact flange portion 11 of the shell 7 constituting the male connector is, as shown in FIGS. 1 to 3, closer to the outer periphery than the outer diameter of the connection screw 12 of the male connector. A screw hole 16 parallel to the axis of the connector is provided in a penetrating manner, and a set screw 17 is screwed into the screw hole 16.

The more the set screw 17 is provided farther from the center of the shell 7, the more effectively the effect of preventing loosening works. In the illustrated case, the set screw 17 is provided at two places on the outer periphery of the contact flange portion 11. If you can choose freely and want to firmly prevent loosening, you can increase the number.

The connector of the present invention is configured as described above, and the connection screw 12 of the shell 7 is screwed into the screw hole 14 of the female connector seat 13 so that the contact flange portion 11 comes into contact with the end face of the female connector seat 13. The shell 7 is screwed to the mold connector seat 13.

After the above screw fastening, screw the set screw 17 screwed into the screw hole 16 of the contact flange portion 11 toward the female connector seat 13,
When the set screw 17 is tightened so that the tip of the set screw 17 is pressed against the end face of the female connector seat 13, the female connector seat 13 and the shell 7 are joined in a detent shape, and the set screw 17 is connected to the female connector seat 13 and the shell 7.
It resists the rotational torque in the loosening direction between them, and effectively works to prevent the screw connection portion from being loosened.

<Effects> As described above, according to the present invention, a simple structure in which a set screw is provided at the male connector contact flange portion can securely prevent the female connector seat and the male connector from being loosened, and the screw connection can be achieved. Obstacles such as leakage and noise mixing due to loose parts can be prevented.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of the connector according to the present invention, FIG. 2 is a side view of the connector, FIG. 3 is an enlarged sectional view of a main part of the connector, and FIG. FIG. 5 is an explanatory view showing a connection state of the coaxial cable and the distributor in the connector of the above, FIG. 6 is a partially cutaway front view showing a conventional connector, and FIG. 7 is a side view of the same. DESCRIPTION OF SYMBOLS 1 ... Coaxial cable, 4 ... Connector 5 ... Tightening bracket, 7 ... Shell 11 ... Connection flange part, 12 ... Connection screw 13 ... Female connector seat, 16 ... Screw hole 17 ... Set screw

Continuation of the front page (72) Inventor Akinobu Ohara 1-3-1 Shimaya, Konohana-ku, Osaka-shi, Osaka Sumitomo Electric Industries, Ltd. Osaka Works (56) References Really open Sho-63-3608 (JP, U) Really open Showa 57-171281 (JP, U) Actually open Showa 58-79988 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] In a connector used for connecting a coaxial cable to a device, a female connector seat is provided on a contact flange portion of a male connector screwed to a female connector seat, closer to the outer periphery than the connection screw outer diameter of the male connector. A high-frequency coaxial cable connector, wherein a set screw for tightening the connector is provided so as to be parallel to an axis of the connector.