JPS6134830Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coaxial cable terminal structure on the premise that gas maintenance will be performed.

Conventionally, this type of terminal has been created by using a specially designed airtight connector or by combining a commercially available airtight connector and an airtight box.

The former may be in demand in large quantities, but if the amount used is small, the price may be high, or in some cases it may not be available.

In the latter case, the overall material cost including the airtight box is high, the structure is large and complicated, and a high level of skill is required to create the airtight end.

In view of the above, it is an object of the present invention to provide an airtight terminal for a coaxial cable that is inexpensive, compact, and has a simple structure.

That is, the present invention is characterized by the formation of a connecting part between coaxial cores, and the center conductor of the coaxial core is connected by a center conductor sleeve having a center conductor insertion hole at both ends, and a split-shaped rubber sleeve is sequentially attached to the outer periphery of the center conductor sleeve. And an outer conductor sleeve is attached and crimped from the outer surface of the outer conductor sleeve to form a coaxial core connection part.

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic explanatory diagram of the whole, in which 1 is a coaxial cable, 2 is a coaxial core, and 3 is a coaxial core on the extraction side. The coaxial cores 2 and 3 are connected by a connecting portion 4, and a housing 5 is provided to surround the connecting portion 4. The housing 5 is filled with an adhesive mixture 6 such as an epoxy resin. There is.

The detailed structure of the connecting portion 4 is as shown in FIG. 7 is a center conductor sleeve, and the coaxial core 2,
Hole 2 into which the center conductors 21 and 31 of No. 3 are inserted and crimped
3 and 33, and these holes 23 and 33 are provided independently without penetrating the holes 23 and 33, respectively.

Reference numeral 8 denotes a split-back type rubber sleeve, which, as shown in FIG. 3, has a cylindrical shape and is provided with a split back in the longitudinal direction. The split-back rubber sleeve has an inner diameter equal to the outer diameter of the center conductor sleeve 7, and is attached tightly to the outer periphery of the center conductor sleeve 7 by widening the back split 12.

An outer conductor sleeve 9 is provided on the outer periphery of the split rubber sleeve 8, and the outer conductor sleeve 9 and the outer conductors 22, 32 of the coaxial cores 2, 3 are crimped and connected using a collar 10 and a bushing 11.

Finally, by crimping the center conductor sleeve 7 from the outer surface of the outer conductor sleeve 9, gaps between the contact surfaces between the center conductor sleeve 7 and the rubber sleeve 8 and between the rubber sleeve 8 and the outer diameter conductor sleeve 9 are eliminated to ensure airtightness. get.

In particular, the rubber sleeve 8 is deformed by crimping the outer conductor sleeve 9, and its elasticity ensures sufficient airtightness.

Therefore, it can function as a sufficient gas dam against the pressure of gas maintenance exerted from the coaxial cable 1 side.

As explained above, the present invention is to obtain an airtight terminal by using a coaxial core connection part with excellent airtightness using inexpensive and easily available members. This is very advantageous when the quantity is small or for on-site construction.

[Brief explanation of the drawing]

Fig. 1 is an overall explanatory diagram of one embodiment of the present invention;
The figure is an explanatory view of the coaxial center connection part, and FIG. 3 is an explanatory view of the split-back type rubber sleeve. 1: Coaxial cable, 2: Coaxial core, 3: Coaxial pull-out core, 4: Coaxial core connection part, 5: Housing, 6: Adhesive mixture, 7: Center conductor sleeve, 8: Split rubber sleeve, 9 : Outer conductor sleeve, 21, 31: Coaxial center conductor, 22, 32: Coaxial center outer conductor.

Claims (1)

[Scope of utility model registration request] Connect the center conductor of the coaxial core on the coaxial cable side and the center conductor of the coaxial core on the pull-out side using a center conductor sleeve that has center conductor insertion holes at both ends, and attach a split-back rubber sleeve to the outer periphery of this sleeve in close contact with the center conductor sleeve. Then, an outer conductor sleeve is attached to the outer periphery of the outer conductor sleeve, and the center conductor sleeve portion is crimped from the outer surface of the outer conductor sleeve to form a coaxial core connection portion.
An airtight terminal for a coaxial cable, characterized in that the casing that encloses the connection portion is filled with an adhesive mixture.