JPS6121811Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coaxial contactor used in communication equipment and the like.

A conventional coaxial contact includes an outer conductor 1, an insulator 2, and a center conductor 3, as shown in FIG. central conductor 3 and elastic insulator 2
For example, the center conductor 3 is inserted into the center conductor insertion hole drilled in the insulator 2 by press-fitting, etc., from position B, and the tapered protrusion 4 provided approximately in the center of the outer periphery of the center conductor is inserted. They are held together by press fitting. The stepped portion 5 of the center conductor 3 is a stopper portion during press-fitting. Next, the assembled insulator 2 and center conductor 3 are inserted into the outer conductor 1, but in this case, insert from position A and press in the insertion direction until the insulator stops. After installation, it is necessary to perform work such as caulking the tip A' of the outer conductor to prevent the insulator 2 from slipping out to the A side. Generally, in addition to caulking, punching, attachment of a locking ring (not shown), etc. may also be used. As explained above, the conventional structure requires post-processing in order to hold the external conductor and insulator together, making the construction work complicated. In addition, the depth of the punch and the amount of caulking have a large impact on reliability.

The object of the invention is to provide a coaxial contact which eliminates the above-mentioned drawbacks.

According to the present invention, in a coaxial contact that connects a coaxial cable and a coaxial connector, a small diameter part that has elasticity and a small outer diameter, a large diameter part with a large outer diameter that is connected to the small diameter part by a step, and a center axis a stepped insulator having a through hole formed in the first cylindrical hollow part, a first cylindrical hollow part, a second cylindrical hollow part, and a stepped insulator having a through hole formed in the first cylindrical hollow part; a cylindrical outer conductor having a tapered portion having a decreasing inner diameter and having the inner diameter smaller than the diameter of the small diameter portion of the stepped insulator and arranged along a central axis and fixing the stepped insulator with the tapered portion; a center conductor formed with a tapered protrusion having an outer diameter larger than the outer diameter of the through hole of the stepped insulator, the small diameter portion of the stepped insulator being press-fitted with the tapered portion of the cylindrical outer conductor; a coaxial contactor in which the central conductor is press-fitted onto the central axis of the stepped insulator in such a direction that the direction in which the tapered protrusion extends is opposite to the direction in which the tapered part of the cylindrical outer conductor extends; can get.

Next, the present invention will be explained in detail with reference to the drawings.

FIGS. 2a to 5 are cross-sectional views for explaining one embodiment of the present invention.

FIG. 2a is a cross-sectional view showing the cylindrical outer conductor 6, which protrudes in the central axis direction to prevent the insulator from falling out and the insulator from the insulator receiving hole 7 to the coaxial cable receiving hole at its tip. The coaxial cable accommodating hole 9 has a tapered stopper part 8 that is a tapered part that widens toward 9, and a coaxial cable receiving hole 9 having a diameter larger than the diameter of the tapered stopper part 8.

FIG. 2b is a cross-sectional view showing the stepped cylindrical insulator 10 accommodated in the cylindrical outer conductor 6, and is press-fitted and fixed into the large diameter portion 11 inscribed in the insulator housing hole 7 and the tapered stopper portion 8. It has a small diameter portion 12 and a center conductor accommodating hole 13 for accommodating the center conductor.

FIG. 3 is a cross-sectional view showing a state in which the stepped cylindrical insulator 10 is press-fitted and fixed to the outer conductor 6. The small diameter portion 12 of the insulator 10 is inserted through the insulator receiving hole 7 until it abuts against the stepped portion 8'. At this time, the small diameter portion 12 has a tapered stopper portion 8.
The coaxial cable is held and fixed in place, and is restored within the coaxial cable accommodation hole 9 due to the slight elasticity of the insulator, thereby preventing it from coming off in the direction of the opening.

FIG. 4 is a cross-sectional view showing a state in which the center conductor 14 is inserted. , is fixed to the opening side by the tapered protrusion 15. At this time, since the tapered protrusion 15 spreads the insulator small diameter part 12, the insulator 10 is It is firmly fixed in the direction of the opening.

FIG. 5 shows a state in which a cylindrical insulator 18 is press-fitted in this embodiment to improve the fit between the plug and the center conductor when the plug is inserted. Note that reference numeral 17 is a tapered protrusion provided on the center conductor 14' to prevent the cylindrical insulator 18 from coming off in the direction of the opening.

As explained above, the present invention can be assembled by simply inserting the center conductor and insulator from one open end of the outer conductor, and does not require punching or caulking, so it has excellent assembly workability and reliability. It has the advantage of improving.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional example, and FIGS. 2a, b, 3, 4 and 5 are sectional views illustrating an embodiment of the present invention. In the figure, 1, 6... cylindrical outer conductor, 2,
10, 18... Insulator, 3, 14, 14'... Center conductor, 4, 15, 17... Tapered protrusion,
5, 16...Center conductor stopper part, 7...Insulator housing hole, 8...Outer conductor stopper part, 9...
Coaxial cable accommodation hole, 11...Insulator large diameter part, 1
2... Insulator small diameter part, 13... Center conductor accommodation hole.

Claims (1)

[Scope of claim for utility model registration] In a coaxial contact that connects a coaxial cable and a coaxial connector, there is a small diameter part that has elasticity and has a small outer diameter, and a large diameter part that is connected to the small diameter part by a step. a stepped insulator having a through hole formed on a central axis; a first cylindrical hollow part; a second cylindrical hollow part; and a stepped insulator having a through hole formed on a central axis;
a tapered part having an inner diameter that decreases toward the cylindrical hollow part and whose inner diameter is smaller than the diameter of the small diameter part of the stepped insulator are arranged along the center part, and the stepped insulator is connected to the stepped insulator at the tapered part. a cylindrical outer conductor to be fixed; and a center conductor formed with a tapered projecting portion having an outer diameter larger than the outer diameter of the through hole of the stepped insulator, and the small diameter portion of the stepped insulator is connected to the cylindrical part. The central conductor is press-fitted onto the tapered portion of the stepped insulator, and the central conductor is placed on the central axis of the stepped insulator such that the expanding direction of the tapered projecting portion is opposite to the expanding direction of the tapered portion of the cylindrical external conductor. Press-fitted coaxial contact.