JP2531476B2 - Caulking ring for coaxial plug - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caulking ring used for connecting a coaxial plug and a coaxial cable, and particularly to a coaxial cable covering and braiding from the outer circumference of the coaxial cable covering to the coaxial connecting plug. The present invention relates to a caulking ring that fixes a coaxial cable and a coaxial connector by tightening.

[0002]

2. Description of the Related Art Conventionally, there has been a coaxial connector having a structure as shown in FIGS. 3 and 4 and being connected by a method of use as shown in both figures. As illustrated, the coaxial plug 10 and the coaxial cable 20 are fixed by a caulking ring 30. The coaxial plug 10 includes an annular member 11 and a flange-shaped member 1.
2 and a nut-shaped member 13.

The inner circumference of the annular member 11 has a coaxial cable 20.
The outer peripheral dimensions of the insulator 22 are matched, and the outer peripheral end of the annular member 11 is formed to have a wedge-shaped cross section. Then, this wedge-shaped portion bites between the insulator 22 and the braid 23 of the coaxial cable 20, pushes up the braid 23 and the cover 24 in the outer peripheral direction, and the annular member 1
1 smoothly penetrates between the insulator 22 and the braid 23 of the coaxial cable 20.

The end portion of the coaxial cable 20 is processed so that the core wire 21 extends long. The reason why the core wire 21 is extended is that the core wire 21 may be used as the center conductor of the coaxial plug. Then, the insulator 22, the braid 23, and the coating 24 are end-face treated at substantially the same position.

Of these, the end surface of the coating 24 abuts the inner surface of the flange-shaped member 12 of the coaxial cable 10 and is used for positioning at the time of insertion. Ring member 1 by insertion
The braid 23 is pressed against the outer periphery of 1 to bring them into contact with each other.

After that, the ring 30 that has been inserted through the outer periphery of the coating 24 is crimped with pliers or the like to braid the coaxial cable 20 and the coating 24 from the outer periphery to the annular member 11.
Press against and fix.

[0007]

The ring 30 is a circular ring, for example, made of aluminum.
If you crimp with pliers, it may slip and you may not be able to crimp well, so workability is poor. It is possible to develop a special tool as a countermeasure, but there is a problem in using a tool that is not versatile.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a ring having good workability in crimping.

[0009]

To achieve the above object, the present invention provides a caulking ring for fixing an end of a coaxial cable connected to a coaxial connector to the coaxial connector according to claim 1. , The inner circumference is almost circular and has a part that protrudes outward in the radial direction, and the outer circumference is slightly circumferentially divided so as to form a pair on both sides with the protruding part sandwiched in between. Characterized in that at least two pairs of projections for tool engagement, which are arranged at a distance from each other, are provided so as to bend the ring by exerting an action force to bring them close to each other. A crimping ring and a crimping ring according to claim 2, wherein the tool engaging projections of the caulking ring according to claim 1 are provided with a tool engaging surface having a concave and convex shape for tool engaging.

[0010]

When the caulking ring is pressed from the outer circumference, the ring is bent and deformed, and the entire outer shape is contracted. Then, in order to press from the outer circumference, an acting force is applied so that at least a pair of protrusions provided on the outer circumference of the ring come close to each other. In applying this acting force, as a tool that can be engaged with the protrusion,
A general-purpose tool typified by pliers may be used.

[0011]

FIG. 1 shows an embodiment of the present invention. For example, an aluminum ring 30 has an annular shape as a whole, and a part thereof has a bent portion 31 protruding outward. are doing. Then, a pair of protrusions 32 are provided at positions sandwiching the bent portion 31.

The projection 32 is shaped so that the gripping surface of the pliers is properly locked when the pliers are applied before the work, and the projection 32 is in good contact with the gripping surface of the pliers even if the degree of pressing is increased thereafter. Is preferably configured.

That is, it is desirable that the outer surface of the projection 32 when viewed from the bent portion 31 has a gentle arc shape. Further, for the same reason, it is advisable to subject the contact surface of the pliers to the knurling or creases on the contact surface.

FIG. 2 shows another embodiment of the present invention. In FIG. 1, the pair of projections is two, whereas the pair of projections 3 is two.
The difference is that 2a and 32b are provided.

[Modification] In the above embodiment, only the example in which the protrusion is provided on the outer circumference of the ring is shown, but a ridge or the like may be provided on the inner circumference of the ring. This makes it possible to penetrate into the coating of the coaxial cable and further strengthen the fixation of the coaxial connector and the coaxial cable. Further, in the above-mentioned embodiment, the inner circumference has a slightly distorted circular shape, but it may have a circular shape.

The caulking ring is efficient if it is manufactured by extruding aluminum and then cutting it into slices.

[0017]

As described above, according to the present invention, at least two pairs of protrusions are provided on the caulking ring, and the protrusions are brought close to each other to bend the ring portion between the protrusions. Even in the case of the coaxial cable and the connector, and the case of the small diameter, the caulking can be similarly performed well. And it is not necessary to use a special tool.

[Brief description of drawings]

1A and 1B are a front view and a bottom view showing an embodiment of the present invention.

2 (a) and 2 (b) are a front view and a bottom view showing another embodiment of the present invention.

FIG. 3 is an explanatory view showing a connection state of a coaxial plug and a coaxial cable, which is a target of the present invention.

FIG. 4 is an explanatory view showing a connection state of a coaxial connector and a coaxial cable, which is a target of the present invention.

[Explanation of symbols]

 10 coaxial plug 11 annular member 12 flange-shaped member 13 nut-shaped member 20 coaxial cable 21 core wire 22 insulator 23 braid 24 coating 30 ring 31 bent portion 32 protrusion

Claims (2)

(57) [Claims] 1. A caulking ring for fixing an end portion of a coaxial cable connected to a coaxial plug to the coaxial plug, wherein an inner circumference is substantially circular and a part thereof projects radially outward. It is a projection for tool engagement that is arranged on the outer periphery with a slight distance in the circumferential direction so as to make a pair on both sides with this protruding portion sandwiched between them. A crimping ring having at least two pairs of projections which are bent to bend the ring when an acting force to bring them close to each other is provided. 2. The caulking ring according to claim 1, wherein the tool engaging projection is provided with a tool engaging concavo-convex pattern on the tool abutting surface.