JP3488422B2 - Rotating 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 rotary coaxial plug mounted on the tip of a coaxial cable and capable of rotating the coaxial cable.

[0002]

2. Description of the Related Art A receiving device such as a television or a satellite broadcast tuner is equipped with a coaxial connector, and a received signal is inputted by attaching a coaxial plug attached to the end of a coaxial cable to this coaxial connector. I am trying. FIG. 18 shows the structure of a conventional coaxial plug attached to the tip of such a coaxial cable.

The coaxial plug 300 shown in FIG. 18 comprises a plug body 311 and a rotary mounting body 312 rotatably mounted on the plug body 311. The rotary mounting body 312 is configured by a nut having a hexagonal shape, and a female screw for screwing to the coaxial connector is cut on the inner peripheral surface thereof. The plug body 311 has a ring-shaped portion 311c.
And a protruding portion 3 formed to protrude from one side surface of the ring-shaped portion 311c and rotatably supporting the rotary mounting body 312.
11f and a cable insertion portion 311a formed so as to project from the other side surface of the ring-shaped portion 311c. The cable insertion portion 311a is a portion that is inserted between the inner insulator of the coaxial cable and the braided wire, and has a serrated cross-section retaining portion 311b for locking the tip of the cable insertion portion 311a so as not to come out of the coaxial cable. Are formed.

To mount such a coaxial plug 300 on a coaxial cable, first, the outer jacket at the tip of the coaxial cable is removed to expose the inner insulator for a predetermined length. Further, the inner insulator is removed to expose the core wire for a predetermined length. The core wire and the internal insulator of the coaxial cable processed in this way are inserted from the rear end of the cable insertion portion 311a of the plug body 311, and the core wire is arranged at the approximate center of the rotary mounting body 312. At this time, the cable insertion portion 311a is inserted between the inner insulator of the coaxial cable and the braided wire, and the tip of the jacket of the coaxial cable is inside the cable contact groove 311d formed on the other side surface of the ring-shaped portion 311c. Abut. In this state, the caulking ring 302 is positioned around the coaxial cable located between the ring-shaped portion 311c and the retaining portion 311b, and the caulking ring 302 is caulked. As a result, the coaxial cable is crimped to the cable insertion portion 311a by the crimping ring 302, and due to the action of the retaining portion 311b, the cable insertion portion 311a is fixed so as not to come out of the coaxial cable.

[0005]

A conventional coaxial plug 300 mounted on the tip of a coaxial cable has a rotary mounting body 31.
It is attached to the coaxial connector by screwing 2 onto the coaxial connector. By the way, the conventional coaxial plug 300
In, the tip of the protrusion 311f abuts the tip of the shell of the coaxial connector, thereby connecting the braided wire forming the ground of the coaxial cable and the coaxial connector. The shell of the abutted coaxial connector constitutes the ground.
However, when the rotary mounting body 312 is screwed to the coaxial connector and the tip of the protruding portion 311f is brought into contact with the tip of the shell of the coaxial connector, friction between the tip of the protruding portion 311f and the shell of the coaxial connector causes the plug to move. The body 311 is prevented from rotating with respect to the coaxial connector. Then,
When stress is generated in the coaxial cable due to twist or the like, the stress remains applied to the coaxial cable, adversely affecting the coaxial cable, and causing damage or looseness of the coaxial plug 300 or the coaxial connector. was there.
If the coaxial plug 300 becomes loose, the ground connection between the coaxial connectors becomes incomplete, and the coaxial plug 300
However, the insertion loss characteristic and the reflection loss characteristic of are deteriorated, which causes a problem that the transmission and reception of signals is hindered.

Therefore, an object of the present invention is to provide a coaxial plug capable of rotating a coaxial cable in a mounted state.

[0007]

In order to achieve the above object, the first rotary coaxial plug of the present invention is a coaxial plug which is mounted on the tip of a coaxial cable, and which has a ring-shaped portion and the ring-shaped portion. A cylindrical curl portion formed so as to protrude from one side surface, and formed so as to protrude from the other side surface of the ring-shaped portion, and can be inserted between the inner insulator and the braided wire of the coaxial cable. A plug main body having a cable insertion portion, a disk-shaped spring housed in a spring housing groove formed on one side surface of the ring-shaped portion, and a substantially cylindrical shape, the inner peripheral surface of which is substantially An inwardly projecting rotary engaging portion and a mounting screw portion formed in the central portion, a main body accommodating portion accommodating the ring-shaped portion formed at one end portion of the inner peripheral surface, and the other end portion of the inner peripheral surface. With a spring housing formed on The curl-processed portion, which includes a mounting body and a ring-shaped spring accommodated in the spring accommodating portion, is rotatably engaged with the rotary engaging portion, and the plug body is rotationally mounted. It is rotatable with respect to the body and is curled so that when the rotary mounting body is mounted on the coaxial connector, a gap is formed between the tip of the coaxial connector and the curled portion. . In the first rotary coaxial plug of the present invention, the ring-shaped spring may be formed by bending a belt-shaped elastic metal plate into a ring shape.

Next, a second rotary coaxial plug of the present invention that can achieve the above object is a coaxial plug that is attached to the tip of a coaxial cable, and has a ring-shaped portion and one side surface of the ring-shaped portion. A cylindrical curl portion formed so as to protrude from the cable, and a cable insertion portion formed so as to protrude from the other side surface of the ring-shaped portion and insertable between the inner insulator of the coaxial cable and the braided wire. A plug main body having a substantially cylindrical shape, a rotational engagement portion protruding inwardly formed in a substantially central portion of an inner peripheral surface of the plug main body, and a mounting screw portion, and formed at one end portion of the inner peripheral surface. A rotary mounting body including a main body storage portion and a spring storage portion formed at the other end of the inner peripheral surface, and a first mounting portion that is stored in the main body storage portion while being fitted into the ring-shaped portion. Ring-shaped spring and the spring storage section A second ring-shaped spring housed in the plug, the curled portion being rotatably engaged with the rotary engaging portion, and the plug body being rotatable with respect to the rotary mounting body. In addition, when the rotary mounting body is mounted on the coaxial connector, it is curled so that a gap is created between the tip of the coaxial connector and the curled portion. Further, in the first rotary coaxial plug or the second rotary coaxial plug of the present invention, the locking projection for locking the spring housed in the spring housing so as not to slip out is provided at the tip of the spring housing. It may be formed in.

Next, a third rotary coaxial plug of the present invention that can achieve the above object is a coaxial plug that is mounted on the tip of a coaxial cable, and has a ring-shaped portion and one side surface of the ring-shaped portion. A cylindrical curl portion formed so as to protrude from the cable, and a cable insertion portion formed so as to protrude from the other side surface of the ring-shaped portion and insertable between the inner insulator of the coaxial cable and the braided wire. A plug main body having a substantially cylindrical shape, a rotational engagement portion protruding inwardly formed in a substantially central portion of an inner peripheral surface of the plug main body, and a spring accommodating portion, and formed at one end portion of the inner peripheral surface. A rotary mount having a main body storage part and a mounting screw part formed on the other end of the inner peripheral surface, and a first mounting part that is stored in the main body storage part while being fitted into the ring-shaped part. Ring-shaped spring and the spring storage section And a second ring-shaped spring is housed in the curling part which is curled processing,
The plug main body is rotatably engaged with the rotary engaging portion so that the plug body is rotatable with respect to the rotary mounting body, and when the rotary mounting body is mounted on the coaxial connector, the coaxial connector Is curled so that a gap is formed between the tip of the curl and the curled portion. In the second rotary coaxial plug or the third rotary coaxial plug of the present invention, the ring-shaped spring may be formed by bending a band-shaped elastic metal plate into a ring shape. . Further, in the second rotary coaxial plug or the third rotary coaxial plug of the present invention, the collar portion that is locked so that the first ring-shaped spring fitted in the ring-shaped portion does not come out is the ring. It may be formed so as to project from one end of the shaped portion.

Next, a fourth rotary coaxial plug of the present invention that can achieve the above object is a coaxial plug that is attached to the tip of a coaxial cable, and has a ring-shaped portion and one side surface of the ring-shaped portion. A cylindrical ring-shaped protrusion that is formed so as to protrude from the other side, and a cable insert that is formed so as to protrude from the other side surface of the ring-shaped portion and that can be inserted between the inner insulator of the coaxial cable and the braided wire. A plug main body having a cylindrical portion, a protruding step portion and a mounting screw portion that are formed in a substantially cylindrical shape, and into which the ring-shaped protruding portion formed at a substantially central portion of the inner peripheral surface is inserted, and an inner peripheral surface A rotary mount having a main body storage formed at one end, a spring storage formed at the other end of the inner peripheral surface, and a caulking portion formed to extend from the main storage. With it inserted into the ring-shaped part The body includes a first ring-shaped spring housed in the housing section and a second ring-shaped spring housed in the spring housing section, and the caulked portion is caulked at the rear end of the ring-shaped portion. The plug body is rotatably engaged to be rotatable with respect to the rotary mounting body, and when the rotary mounting body is mounted on the coaxial connector, the tip of the coaxial connector and the ring shape are attached. A gap is formed between the protrusion and the protrusion.

According to the present invention as described above, the curl processing portion is rotatably engaged with the rotary engaging portion so that the plug body is rotatable with respect to the rotary mounting body and the rotary mounting body is When it is attached to the coaxial connector, it is curled so that a gap is created between the tip of the coaxial connector and the curled portion. This allows the plug body to rotate even when the rotary coaxial plug is screwed onto the coaxial connector. Therefore, even if a stress is generated in the coaxial cable, the stress is removed by the rotation of the coaxial cable together with the plug body, no adverse effect remains on the coaxial cable, and it is possible to prevent the rotating coaxial plug from loosening. become. Further, even if the plug body is rotatable with the rotary coaxial plug attached in this manner, the disc-shaped spring or ring-shaped spring can reliably connect the ground, so that the electrical characteristics of the rotary coaxial plug can be improved. The characteristics do not deteriorate.

As described above, the earth connection is made by using the disk-shaped spring and the ring-shaped spring, or by using the two ring-shaped springs, so that the earth connection is prevented from being incomplete by a simple structure. You can Therefore, the increase in cost can be suppressed as much as possible. Further, since the total length of the rotary mounting body becomes long, it becomes easy to operate the rotary mounting body with a finger, and the rotary coaxial plug can be easily mounted on the coaxial connector embedded in the wall or the like.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first configuration example of an embodiment of a coaxial plug of the present invention is shown in FIG. 1 and its exploded view is shown in FIG. Further, FIG. 3 shows a sectional view of the coaxial plug according to the first embodiment of the present invention when it is screwed onto the coaxial connector. Furthermore, the configuration of each component of the coaxial plug according to the first embodiment of the present invention is shown in FIGS. Hereinafter, a first configuration example of the embodiment of the coaxial plug of the present invention will be described based on these drawings.

As shown in FIG. 1, the first coaxial plug 1 according to the embodiment of the present invention comprises a plug body 11 and a rotary mounting body 12 rotatably mounted on the plug body 11. There is. Plug body 11 made of metal
2 and 4, a ring-shaped portion 11c formed in a ring shape, and a curl processing portion 11f formed to project from one side surface of the ring-shaped portion 11c to rotatably support the rotary mounting body 12. And a cable insertion portion 11a formed so as to project from the other side surface of the ring-shaped portion 11c. Further, a through hole is formed throughout the plug body 11 substantially along the central axis. Further, the cable insertion portion 11a is formed so that its diameter becomes smaller toward the front, and is a portion to be inserted between the inner insulator of the coaxial cable and the braided wire. A ring-shaped retaining portion 11b having a serrated cross section is formed at the tip of the cable insertion portion 11a so as to prevent the coaxial cable from coming off. A spring housing groove 11e for housing a disk-shaped disc-shaped spring 13 is formed on one side surface of the ring-shaped portion 11c, and the coaxial housing mounted on the other side surface of the ring-shaped portion 11c. A cable contact groove 11d with which the tip of the cable contacts is formed.

The rotary mounting body 12 made of metal is formed in a cylindrical shape, and its outer periphery is knurled to prevent slippage. As shown in FIGS. 2 and 5, a mounting screw portion 12b to be screwed to the coaxial connector is cut at a substantially central portion of the inner peripheral surface of the rotary mounting body 12. Further, a body housing portion 12a for housing the ring-shaped portion 11c of the plug body 11 is formed at one end of the inner peripheral surface of the rotary mounting body 12. A rotary engagement portion 12d that protrudes inward is formed between the main body storage portion 12a and the mounting screw portion 12b. The rotation engaging portion 12d is the curl processing portion 1 of the plug body 11.
When 1f is curled, it becomes a portion that is rotatably engaged with the curled portion 11f. Further, a spring housing portion 12 in which a ring-shaped spring 14 formed in a ring shape is housed in the other end portion of the inner peripheral surface of the rotary mounting body 12.
c is formed. Further, the spring storage portion 12c
A ring-shaped locking projection 12e is formed at the tip of the locking projection 12e for locking the stored ring-shaped spring 14 so as not to slip out.

Then, as shown in FIG. 2, the disc-shaped spring 13 is accommodated in the spring accommodating groove 11e of the plug body 11 shown in FIG. 4 and is inserted into the rotary mounting body 12 from the curl processing portion 11f side. By this, the main body storage unit 1
The ring-shaped portion 11c is fitted into 2a. In this state, if the curl processing portion 11f is subjected to curl processing so as to be expanded in diameter, the curl processing portion 11f is expanded in diameter as shown in FIG. It will engage so that there is no. Then, by mounting the ring-shaped spring 14 in the spring housing portion 12c of the rotary mounting body 12, the coaxial plug 1 having the configuration shown in FIG. 3 can be assembled.

Such a coaxial plug 1 is connected to a coaxial cable 3
In order to mount it on the inner cable 32, the outer jacket 31 at the tip of the coaxial cable 3 is removed to expose the inner insulator 32 by a predetermined length as shown in FIG. Further, the inner insulator 32 is removed to expose the core wire 33 for a predetermined length. The core wire 33 and the internal insulator 32 of the coaxial cable 3 processed in this way are inserted from the rear end of the cable insertion portion 11a of the plug body 11, and the core wire 33 is arranged substantially at the center of the rotary mounting body 12. The core conductor of the coaxial plug 1 is constituted by the core wire 33. At this time, as shown in FIG. 3, the cable insertion portion 11a is inserted between the inner insulator 32 and the braided wire 34 of the coaxial cable 3 to electrically connect the braided wire 34 and the cable insertion portion 11a. . In addition, as shown in FIG.
The tip of the outer cover 31 contacts the cable contact groove 11d formed on the other side surface of the ring-shaped portion 11c. In this state, the caulking ring 2 is positioned around the coaxial cable 3 located between the ring-shaped portion 11c and the retaining portion 11b, and the caulking ring 2 is caulked. As a result, FIG.
Further, as shown in FIG. 4, the coaxial cable 3 is crimped to the cable insertion portion 11a by the crimping ring 2, and the retaining portion 11b is fixed so as not to come out of the coaxial cable 3.

The coaxial plug 1 according to the first embodiment of the present invention
In FIG. 3, the characteristic configuration is such that when the coaxial plug 1 is screwed onto the coaxial connector 50 as shown in FIG.
That is, there is a gap d between the front end surface of 0 and the curled portion 11f. As a result, even if the rotary mounting body 12 is screwed to the coaxial connector 50 and fixed non-rotatably, the plug body 11 is rotatable with respect to the rotary mounting body 12, so that the coaxial cable 3 is coaxial. It becomes rotatable with respect to the connector 50. That is, when the coaxial cable 3 is twisted or the like and stress is applied, the coaxial cable 3 rotates together with the plug body 11 to remove the stress.

As described above, when the coaxial plug 1 is screwed to the coaxial connector 50, even if there is a gap d between the tip end surface of the coaxial connector 50 and the curl processing portion 11f, the ring-shaped portion 11c is not formed. The electrical connection with the rotary mount 12 is made by the disc-shaped spring 13 interposed therebetween. As a result, the braided wire 34 of the coaxial cable 3 is reliably connected to the coaxial connector 50 via the plug body 11 and the disc-shaped spring 13. That is, the ground connection can be made completely. Since the disc-shaped spring 13 is housed in the spring housing groove 11e, it is not crushed until it becomes flat, and the spring action is not lost.

Here, the detailed structure of the disc-shaped spring 13 is shown in FIGS. 6 (a) and 6 (b). However, FIG. 6A is a plan view of the disc-shaped spring 13, and FIG. 6B is a side view thereof. As shown in these figures, the disc-shaped spring 13 is formed by punching out a thin metal plate having elasticity such as phosphor bronze. The disk-shaped spring 13 has, for example, eight spring-shaped bent pieces 13b that are slightly erected, and these spring pieces 13b are formed integrally with the ring-shaped joint portion 13a. ing.

When the coaxial plug 1 is attached to the coaxial connector 50 as shown in FIG. 3, the rotary mounting body 12 is rotated so that the mounting screw portion 12b of the rotary mounting body 12 is attached to the outer peripheral surface of the coaxial connector 50. It is performed by screwing the formed male screw. In this case, since the rotary mounting body 12 is formed to have a long length, even if the coaxial connector 50 is provided in a serial unit embedded in a wall or the like, it is easy to securely grip the rotary mounting body 12 with a finger. You will be able to screw it on. When the coaxial plug 1 is attached to the coaxial connector 50, the rotary mounting body 12 and the coaxial connector 50 are also electrically connected by the ring-shaped spring 14 housed in the spring housing portion 12c.

The detailed structure of the ring-shaped spring 14 is shown in FIGS. 7 (a) (b) (c). However, FIG. 7 (a) is a plan view of the ring-shaped spring 14, FIG. 7 (b) is a side view thereof, and FIG. 7 (c) shows a strip-shaped metal plate for forming the ring-shaped spring. Shows. As shown in these figures, the ring-shaped spring 14 is formed by punching a thin elastic metal plate such as phosphor bronze into a band shape as shown in FIG. 7C. Then, as shown in FIGS. 7 (a) and 7 (b), it is formed by performing a bending process in a ring shape. The ring-shaped spring 14 is formed with a plurality of spring pieces 14d by forming a plurality of punched portions 14c. These spring pieces 14
d is formed so as to connect the first joint piece 14a and the second joint piece 14b. The spring piece 14d is slightly bent inward so that the spring piece 14d has an arc-shaped cross section when bent in a ring shape.

By the way, even if the rotary mounting body 12 is loosened with respect to the coaxial connector 50 for some reason, the braided wire 34 of the coaxial cable 3 and the coaxial connector 50 are as follows: the braided wire 34-the plug body 11-the disk spring. 13-rotary mounting body 12-ring spring 14-coaxial connector 5
The 0 path ensures reliable connection. Therefore, even if the coaxial plug 1 is loosened, its insertion loss characteristic and reflection loss characteristic can be improved over a wide band.

Next, a second configuration example of the embodiment of the coaxial plug of the present invention will be described. However, the appearance of the coaxial plug according to the second embodiment is the same as the appearance of the coaxial plug according to the first embodiment shown in FIG.
FIG. 8 shows an exploded view of the coaxial plug according to the second embodiment of the present invention. Further, FIG. 9 shows a sectional view when the coaxial plug according to the second embodiment of the present invention is securely attached to the coaxial connector. Furthermore, FIGS. 10 and 11 show the configurations of the plug body and the rotary mounting body that constitute the coaxial plug according to the second embodiment of the present invention. A second configuration example of the embodiment of the coaxial plug of the present invention will be described below with reference to these drawings.

The coaxial plug 1 according to the second embodiment of the present invention
00 is a metal plug body 111, and a rotary mount 1 rotatably mounted on the plug body 111.
It is composed of 12 and. The plug body 111 is shown in FIG.
As shown in FIG. 10, a ring-shaped portion 111c formed in a ring shape, a curl processing portion 111f formed to project from one side surface of the ring-shaped portion 111c and rotatably supporting the rotary mounting body 112, and a ring-shaped portion. The cable insertion portion 111a is formed so as to project from the other side surface of the portion 111c. In addition, a through hole is formed throughout the plug body 111 substantially along the central axis. further,
The cable insertion portion 111a is formed so that its diameter becomes smaller toward the front, and is a portion to be inserted between the inner insulator of the coaxial cable and the braided wire. A ring-shaped retaining portion 111b having a serrated cross-section is formed at the tip of the cable insertion portion 111a so as to prevent the coaxial cable from coming off. In addition, a flange portion 111e protruding in a ring shape is formed on one end edge of the outer peripheral surface of the ring portion 111c. The collar portion 111e is a collar portion for locking the first ring-shaped spring 113 fitted on the outer peripheral surface of the ring-shaped portion 111c so as not to slip out. Further, on the other surface of the ring-shaped portion 111c, a cable contact groove 111d with which the tip of the mounted coaxial cable abuts is formed.

The rotary mount 112 made of metal is formed in a cylindrical shape, and its outer periphery is knurled to prevent slippage. As shown in FIGS. 8 and 11, a mounting screw portion 112b to be screwed to the coaxial connector is cut at a substantially central portion of the inner peripheral surface of the rotary mounting body 112. In addition, the first ring-shaped spring 113 is housed at one end of the inner peripheral surface of the rotary mounting body 112, and the plug body 1
The main body storage portion 11 in which the ring-shaped portion 111c
2a is formed. A rotation engaging portion 112 protruding inward is provided between the main body housing portion 112a and the mounting screw portion 112b.
d is formed. The rotational engagement portion 112d is a portion that rotatably engages with the curl processing portion 111f when the curl processing portion 111f of the plug body 111 is curled so as to be expanded in diameter. Further, the second ring-shaped spring 1 is attached to the other end of the inner peripheral surface of the rotary mount 112.
A second spring storage portion 112c for storing 14 is formed. A ring-shaped locking projection 112e for locking the stored second ring-shaped spring 114 so as not to slip out is formed at the tip of the second spring storage portion 112c.

Then, with the first ring-shaped spring 113 fitted on the outer peripheral surface of the ring-shaped portion 111c of the plug body 111 before curling shown in FIG.
The first ring-shaped spring 11 is inserted into the main body storage portion 112a by being inserted into the curl processing portion 111f from the side.
The ring-shaped part 111c to which 3 is fitted is inserted. In this state, when the curl processing portion 111f is subjected to the curl processing so that the diameter of the curl processing portion 111f is increased, the processed curl processing portion 111f is engaged with the rotation engaging portion 112d so as not to come out, as shown in FIG. Will come together. Next, by fitting the second ring-shaped spring 114 into the second spring housing portion 112c of the rotary mount 112, the coaxial plug 100 shown in FIG. 9 can be assembled.

The process of mounting such a coaxial plug 100 on the coaxial cable 3 is the same as that of the coaxial plug 1 of the first embodiment of the present invention described above, and therefore its explanation is omitted. The coaxial plug 100 according to the second embodiment of the present invention has a characteristic configuration as shown in FIG.
That is, when 00 is screwed onto the coaxial connector 50, a gap d exists between the tip end surface of the coaxial connector 50 and the curled portion 111f. As a result, the rotary mount 11
Even if 2 is screwed to the coaxial connector 50 and fixed non-rotatably, since the plug body 111 is rotatable with respect to the rotary mounting body 112, the coaxial cable 3 rotates with respect to the coaxial connector 50. It will be possible. That is, when twist is generated in the coaxial cable 3 and stress is applied,
The coaxial cable 3 can rotate together with the plug body 111 to remove stress.

As described above, when the coaxial plug 100 is screwed onto the coaxial connector 50, even if the gap d exists between the tip end surface of the coaxial connector 50 and the curled portion 111f, the ring-shaped portion 111c and The electrical connection with the rotary mount 112 is made by interposing the first ring-shaped spring 11 interposed therebetween.
3 will be performed. As a result, the braided wire 34 of the coaxial cable 3 is reliably connected to the coaxial connector 50 via the plug body 111 and the first ring-shaped spring 113. That is, it is possible to reliably connect the ground. This first ring-shaped spring 113
Is stored in the space formed by the flange portion 111e and the inner peripheral surface of the main body storage portion 112a, so that it is not crushed until it becomes flat and the spring action is not lost.

Further, the coaxial plug 10 of the second embodiment.
0 is attached to the coaxial connector 50 as shown in FIG. When the coaxial plug 100 is attached to the coaxial connector 50, the rotary mounting body 112 is rotated so that the mounting screw portion 112 b of the rotary mounting body 112 is attached to the coaxial connector 5.
It is carried out by screwing on a male screw formed on the outer peripheral surface of No. 0. In this case, since the rotary mounting body 112 is formed to be long, even if the coaxial connector 50 is provided in a serial unit embedded in a wall or the like, the rotary mounting body 1 can be finger-operated.
It becomes possible to surely grip 12 and screw it easily. At this time, the rotary mount 112 and the coaxial connector 50
Is also electrically connected by the second ring-shaped spring 114 housed in the second spring housing portion 112c. This second ring-shaped spring 114
Since the first ring-shaped spring 113 has the same structure as the ring-shaped spring 14 shown in FIG. 7, detailed description thereof will be omitted.

By the way, even if the rotary mount 112 is loosened with respect to the coaxial connector 50 for some reason, the braided wire 34 of the coaxial cable 3 and the coaxial connector 50 are as follows: the braided wire 34-the plug body 111-the first ring shape. Spring 113-Rotating mounting body 112-Second ring-shaped spring 1
The path of the 14-coaxial connector 50 ensures a reliable connection. Therefore, even if the coaxial plug 100 is loosened, its insertion loss characteristic and reflection loss characteristic can be improved over a wide band.

Next, a third configuration example of the embodiment of the coaxial plug of the present invention will be described. However, the appearance of the coaxial plug of the third embodiment is similar to that of the coaxial plug of the first embodiment shown in FIG.
FIG. 12 shows an exploded view of the coaxial plug according to the third embodiment of the present invention. Further, FIG. 13 shows a sectional view when the coaxial plug of the third embodiment of the present invention is securely attached to the coaxial connector. Further, FIG. 14 shows the structure of the rotary mounting body that constitutes the coaxial plug according to the third embodiment of the present invention. Hereinafter, a third configuration example of the embodiment of the coaxial plug of the present invention will be described based on these drawings.

Coaxial plug 2 of the third embodiment of the present invention
00 is a metallic plug body 211, and a rotary mount 2 rotatably mounted on the plug body 211.
It is composed of 12 and. The plug body 211 is shown in FIG.
0 has the same structure as the plug body 111 according to the second embodiment shown in FIG. 0, and as shown in FIG. 12, a ring-shaped portion 211c and a ring-shaped portion 211c.
A curl processing portion 211f that is formed to project from one side surface of c and rotatably supports the rotary mounting body 212, and a cable insertion portion 211a that is formed to project from the other side surface of the ring-shaped portion 211c. In addition, the plug body 21
Through-holes 1 are formed over the entire surface substantially along the central axis. Further, the cable insertion portion 211a is formed so that the diameter becomes smaller toward the front, and is a portion to be inserted between the inner insulator of the coaxial cable and the braided wire. A ring-shaped retaining portion 211b having a serrated cross-section is formed at the tip of the cable insertion portion 211a so as to prevent the coaxial cable from coming off. A flange portion 211e protruding in a ring shape is formed on one end edge of the outer peripheral surface of the ring-shaped portion 211c. The collar portion 211e is a collar portion for locking the first ring-shaped spring 213 fitted on the outer peripheral surface of the ring-shaped portion 211c so as not to come out. Further, on the other side surface of the ring-shaped portion 211c, a cable contact groove 211d with which the tip of the mounted coaxial cable abuts is formed.

The rotary mounting body 212 made of metal has a cylindrical shape, and its outer periphery is knurled to prevent slippage. As shown in FIGS. 12 and 14, the rotary mounting body 212 is provided with a second
A second spring accommodating portion 212c for accommodating the ring-shaped spring 214 is formed. The second ring-shaped spring 2 stored in the second spring storage portion 212c.
An engaging step portion 212e is formed so as to prevent 14 from slipping out, and is formed as a ring-shaped groove portion. Further, the first end is attached to one end of the inner peripheral surface of the rotary mount 212.
A ring-shaped spring 213 is stored, and a main body storage portion 212a for storing the ring-shaped portion 211c of the plug main body 211 is formed. A rotation engaging portion 212d protruding inward is formed between the main body storage portion 212a and the second spring storage portion 212c. The rotational engaging portion 212d is the curl processing portion 211f of the plug body 211.
Is a portion that is rotatably engaged with the curl processing portion 211f when the curl processing is performed so as to increase the diameter. Further, a mounting screw portion 212b that is screwed to the coaxial connector is formed on the other end of the inner peripheral surface of the rotary mounting body 212.

Then, with the first ring-shaped spring 213 fitted to the outer peripheral surface of the ring-shaped portion 211c of the plug main body 211 before curling shown in FIG.
When the first ring-shaped spring 21 is inserted into the main body accommodating portion 212a by inserting the curl processing portion 211f into the main body 12 from the side.
The ring-shaped part 211c to which 3 is fitted is inserted. In this state, when the curl processing portion 211f is subjected to curl processing so as to be expanded in diameter, the processed curl processing portion 211f is engaged with the rotation engaging portion 212d so as to be rotatable and not come out, as shown in FIG. Come to do. Next, by fitting the second ring-shaped spring 214 into the second spring accommodating portion 212c of the rotary mounting body 212, as shown in FIG.
The coaxial plug 200 shown in can be assembled.

The process of mounting such a coaxial plug 200 on the coaxial cable 3 is the same as that of the coaxial plug 1 of the first embodiment of the present invention described above, and therefore its explanation is omitted. In the coaxial plug 200 according to the third embodiment of the present invention, the characteristic configuration is also shown in FIG. 13, and when the coaxial plug 200 is screwed onto the coaxial connector 50, the tip end surface of the coaxial connector 50 and the curl processing portion. Gap d between the 2
Is that there is. As a result, the rotary mount 2
Even if 12 is screwed to the coaxial connector 50 and fixed non-rotatably, since the plug body 211 is rotatable with respect to the rotary mounting body 212, the coaxial cable 3 rotates with respect to the coaxial connector 50. It will be possible. That is, when the coaxial cable 3 is twisted or the like and stress is applied, the coaxial cable 3 rotates together with the plug body 211 to remove the stress.

As described above, when the coaxial plug 200 is screwed to the coaxial connector 50, even if there is a gap d between the tip end surface of the coaxial connector 50 and the curled portion 211f, the ring-shaped portion 211c and The electrical connection with the rotary mounting body 212 is made by interposing the first ring-shaped spring 21 interposed therebetween.
3 will be performed. As a result, the braided wire 34 of the coaxial cable 3 is reliably connected to the coaxial connector 50 via the plug body 211 and the first ring-shaped spring 213. That is, it is possible to reliably connect the ground. This first ring-shaped spring 213
Is stored in the space formed by the flange portion 211e formed at the rear end of the ring-shaped portion and the inner peripheral surface of the main body storage portion 212a, so it is not crushed until it becomes flat, and the spring action is achieved. It is designed so as not to lose.

Also, the coaxial plug 20 of the third embodiment.
0 is attached to the coaxial connector 50 as shown in FIG. When the coaxial plug 200 is attached to the coaxial connector 50, by rotating the rotary attachment body 212,
This is performed by screwing the mounting screw portion 212b of the rotary mounting body 212 onto a male screw formed on the outer peripheral surface of the coaxial connector 50. In this case, since the rotary mounting body 212 is formed to be long, even if the coaxial connector 50 is provided in a serial unit embedded in a wall or the like, it is easy to securely grip the rotary mounting body 212 with a finger. You will be able to screw it on. At this time, the rotary mount 212 and the coaxial connector 5
It is also electrically connected to 0 by the second ring-shaped spring 214 housed in the second spring housing portion 212c. This second ring-shaped spring 21
The fourth and first ring-shaped springs 213 have the same structure as the ring-shaped spring 14 shown in FIG. 7, and thus detailed description thereof will be omitted.

By the way, even if the rotary mount 212 is loosened with respect to the coaxial connector 50 for some reason, the braided wire 34 of the coaxial cable 3 and the coaxial connector 50 are as follows: the braided wire 34-the plug body 211-the first ring shape. Spring 213-rotary mounting body 212-second ring-shaped spring 2
The path of the 14-coaxial connector 50 ensures a reliable connection. Therefore, even if the coaxial plug 200 is loosened, its insertion loss characteristic and reflection loss characteristic can be improved over a wide band.

Next, a fourth structural example of the embodiment of the coaxial plug of the present invention will be described. However, the appearance of the coaxial plug according to the fourth embodiment is the same as the appearance of the coaxial plug according to the first embodiment shown in FIG.
FIG. 15 shows an exploded view of the coaxial plug according to the fourth embodiment of the present invention. Further, in the coaxial plug of the fourth embodiment of the present invention, a cross-sectional view showing a state during assembly is shown in FIG. 16, and when the coaxial plug of the fourth embodiment of the present invention is securely attached to the coaxial connector. FIG. 17 shows a sectional view of FIG. Hereinafter, a fourth configuration example of the embodiment of the coaxial plug of the present invention will be described based on these drawings.

The coaxial plug 2 according to the fourth embodiment of the present invention
Reference numeral 50 denotes a plug main body 261 made of metal, and a rotary mounting body 2 rotatably attached to the plug main body 261.
And 62. The plug body 261 is shown in FIG.
0 has a configuration partially different from that of the plug body 111 according to the second embodiment, and has a ring-shaped portion 261c formed in a ring shape as shown in FIGS.
A ring-shaped protruding portion 261f that is formed by protruding from one side surface of the ring-shaped portion 261c and into which the rotary mounting body 262 is fitted and inserted.
And a cable insertion portion 261a formed so as to project from the other side surface of the ring-shaped portion 261c. Further, a through hole is formed throughout the plug body 261 substantially along the central axis. Furthermore, the cable insertion portion 261
The a is formed so that the diameter becomes smaller toward the front, and is a portion to be inserted between the inner insulator of the coaxial cable and the braided wire. A ring-shaped retaining portion 261b having a serrated cross-section is formed at the tip of the cable insertion portion 261a so as to prevent the coaxial cable from coming off. A flange portion 261e protruding in a ring shape is formed on one end edge of the outer peripheral surface of the ring-shaped portion 261c. This collar part 2
The reference numeral 61e is a flange portion for locking the first ring-shaped spring 263 fitted on the outer peripheral surface of the ring-shaped portion 261c so as not to slip out. A cable contact groove 261d with which the tip of the mounted coaxial cable abuts is formed on the other side surface of the ring-shaped portion 261c.

The rotary mounting body 262 made of metal has a cylindrical shape, and the outer periphery thereof is knurled to prevent slipping. As shown in FIGS. 15 to 17, the rotary mounting body 262 has a first inner surface provided with a first
A ring-shaped spring 263 is stored, and a main body storage portion 262a for storing the ring-shaped portion 261c of the plug main body 261 is formed. Also, the rotary mount 262
A second spring accommodating portion 262c for accommodating the second ring-shaped spring 264 is formed at the other end of the inner peripheral surface of the. The second spring storage portion 262c is formed with a locking protrusion 262e for locking the stored second ring-shaped spring 264 so as not to slip out, and is formed into a ring-shaped groove.

Further, a protruding step portion 262d is formed adjacent to the main body accommodating portion 262a so as to protrude inward in a ring shape. The ring-shaped protruding portion 261f of the plug body 261 is fitted and inserted so as to be in sliding contact with the inner peripheral surface of the protruding step portion 262d, whereby both can be rotated. Furthermore,
A mounting screw portion 262b that is screwed into the coaxial connector is formed at the center of the inner peripheral surface of the rotary mounting body 212. Furthermore, as shown in FIG. 16, a caulking portion 262f extending rearward of the main body accommodating portion 262a is formed. The caulking portion 262f is caulked so as to have a reduced diameter as shown in FIG.
By engaging with the rear end of the ring-shaped portion 261c in No. 1, the rotary mounting body 262 is prevented from coming out of the plug body 261. As a result, the plug body 261 is rotated by the rotary mount 26.
It is rotatable with respect to 2.

Then, the ring-shaped portion 2 of the plug body 261.
In the state where the first ring-shaped spring 263 is fitted on the outer peripheral surface of 61c, the rotary mounting body 2 before caulking shown in FIG.
When the first ring-shaped spring 26 is inserted into the main body storage portion 262a by inserting the ring-shaped protruding portion 261f into the 62.
The ring-shaped part 261c to which 3 is fitted is inserted. In this state, the swaged portion 2 of the rotary mount 262 is
When caulking is applied to 62f, caulking portion 2 after machining
As shown in FIG. 17, 62f is adapted to engage with the ring-shaped portion 261c so as to be rotatable and not to slip out. Then, the second spring accommodating portion 262 of the rotary mounting body 2612.
By fitting the second ring-shaped spring 264 in c, the coaxial plug 25 of the fourth embodiment shown in FIG.
0 can be assembled.

The process of mounting such a coaxial plug 250 on the coaxial cable 3 is the same as that of the coaxial plug 1 of the first embodiment of the present invention described above, and therefore its explanation is omitted. In the coaxial plug 250 of the fourth embodiment of the present invention, a characteristic configuration is that when the coaxial plug 250 is screwed onto the coaxial connector 50 as shown in FIG. That is, a gap d exists between the portion 261f and the portion 261f. As a result, even if the rotary mounting body 262 is screwed to the coaxial connector 50 and fixed non-rotatably, the plug body 261 is rotatable with respect to the rotary mounting body 262, so that the coaxial cable 3 is coaxial. It becomes rotatable with respect to the connector 50. That is,
When the coaxial cable 3 is twisted or the like and stress is applied, the coaxial cable 3 rotates together with the plug body 261 to remove the stress.

As described above, when the coaxial plug 250 is screwed to the coaxial connector 50, even if the gap d exists between the tip end surface of the coaxial connector 50 and the ring-shaped protruding portion 261f, the ring-shaped portion 261c. The electrical connection between the rotary mounting body 262 and the rotary mounting body 262 is performed by the first ring-shaped spring 21 interposed therebetween.
6 will be performed. As a result, the braided wire 34 of the coaxial cable 3 is reliably connected to the coaxial connector 50 via the plug body 261 and the first ring-shaped spring 263. That is, it is possible to reliably connect the ground. This first ring-shaped spring 263
Is housed in the space formed by the collar portion 261e formed at the rear end of the ring-shaped portion and the inner peripheral surface of the main body housing portion 262a, so that it is not crushed until it becomes flat and has a spring action. It is designed so as not to lose.

Further, the coaxial plug 25 of the fourth embodiment
0 is attached to the coaxial connector 50 as shown in FIG. When the coaxial plug 250 is attached to the coaxial connector 50, by rotating the rotary attachment body 216,
This is performed by screwing the mounting screw portion 262b of the rotary mounting body 262 onto a male screw formed on the outer peripheral surface of the coaxial connector 50. In this case, since the rotary mounting body 262 is formed to be long, even if the coaxial connector 50 is provided in the serial unit embedded in the wall or the like, it is easy to securely grip the rotary mounting body 262 with a finger. You will be able to screw it on. At this time, the rotary mount 262 and the coaxial connector 5
Zero is also electrically connected by the second ring-shaped spring 264 housed in the second spring housing portion 262c. This second ring-shaped spring 26
The fourth and first ring-shaped springs 263 have the same structure as the ring-shaped spring 14 shown in FIG. 7, and thus detailed description thereof will be omitted.

By the way, even if the rotary mount 262 is loosened with respect to the coaxial connector 50 for some reason, the braided wire 34 of the coaxial cable 3 and the coaxial connector 50 are formed by the braided wire 34-the plug body 261-the first ring shape. Spring 263-rotary mount 262-second ring-shaped spring 2
The path of the 64-coaxial connector 50 ensures reliable connection. Therefore, even if the coaxial plug 250 is loosened, its insertion loss characteristic and reflection loss characteristic can be improved over a wide band.

As described above, in the coaxial plug according to the present invention, when the coaxial plug is screwed onto the coaxial connector, the gap d exists between the tip end surface of the coaxial connector and the curled portion. Become. Therefore, when the coaxial plug according to the present invention is attached to the coaxial connector, if stress due to twisting or the like is applied to the coaxial cable, the plug body rotates together with the coaxial cable with respect to the fixed rotary attachment body, and Can be removed. Further, in the coaxial plug according to the present invention, the plug body and the rotary mounting body are electrically connected by the disc spring or the ring spring interposed therebetween. Furthermore, the rotary attachment and the coaxial connector are electrically connected by a ring-shaped spring interposed therebetween. Accordingly, even if the plug body is rotatable while the coaxial plug is attached to the coaxial connector, the ground connection between the coaxial plug and the coaxial connector can be reliably performed.

Further, even if the rotary mounting body is loosened with respect to the coaxial connector for some reason, the coaxial connector and the plug body can be reliably electrically connected by the disc-shaped spring or the ring-shaped spring. It is possible to prevent the electrical characteristics from deteriorating. The spring that is interposed between the coaxial connector and the plug body to electrically connect the two is not limited to a disc-shaped spring or a ring-shaped spring, but a spring having another shape that can be interposed therebetween. May be

[0051]

As described above, according to the present invention, the curl processing portion is rotatably engaged with the rotary engaging portion so that the plug body is rotatable with respect to the rotary mounting body, and the rotary mounting body is rotatable. Is attached to the coaxial connector, it is curled so that a gap is created between the tip of the coaxial connector and the curled portion. This allows the plug body to rotate even when the rotary coaxial plug is screwed onto the coaxial connector. Therefore, even if a stress is generated in the coaxial cable, the stress is removed by the rotation of the coaxial cable together with the plug body, no adverse effect remains on the coaxial cable, and it is possible to prevent the rotating coaxial plug from loosening. become. Further, even if the plug body is rotatable with the rotary coaxial plug attached in this manner, the disc-shaped spring or ring-shaped spring can reliably connect the ground, so that the electrical characteristics of the rotary coaxial plug can be improved. The characteristics do not deteriorate.

As described above, the earth connection is made by using the disk-shaped spring and the ring-shaped spring, or by using the two ring-shaped springs, so that the earth connection is not incomplete with a simple structure. You can Therefore, the increase in cost can be suppressed as much as possible. Further, since the total length of the rotary mounting body becomes long, it becomes easy to operate the rotary mounting body with a finger, and the rotary coaxial plug can be easily mounted on the coaxial connector embedded in the wall or the like.

[Brief description of drawings]

FIG. 1 is a diagram showing a first configuration example of an embodiment of a coaxial plug of the present invention.

FIG. 2 is an exploded view of the coaxial plug according to the first embodiment of this invention.

FIG. 3 is a diagram showing a state in which the coaxial plug according to the first embodiment of the present invention is attached to a coaxial connector.

FIG. 4 is a diagram showing a detailed configuration of a plug body in the coaxial plug according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a detailed configuration of a rotary mounting body in the coaxial plug according to the first embodiment of the present invention.

FIG. 6 is a diagram showing a detailed configuration of a disc-shaped spring in the coaxial plug according to the first embodiment of the present invention.

FIG. 7 is a diagram showing a detailed configuration of a ring-shaped spring in the coaxial plug according to the first embodiment of the present invention.

FIG. 8 is an exploded assembly view of the coaxial plug according to the second embodiment of the present invention.

FIG. 9 is a diagram showing a state in which a coaxial plug according to a second embodiment of the present invention is attached to a coaxial connector.

FIG. 10 is a diagram showing a detailed configuration of a plug body in a coaxial plug according to a second embodiment of the present invention.

FIG. 11 is a diagram showing a detailed configuration of a rotary mounting body in the coaxial plug according to the second embodiment of the present invention.

FIG. 12 is an exploded view of the coaxial plug according to the third embodiment of the present invention.

FIG. 13 is a diagram showing a state in which the coaxial plug according to the third embodiment of the present invention is attached to a coaxial connector.

FIG. 14 is a diagram showing a detailed configuration of a rotary mounting body in a coaxial plug according to a third embodiment of the present invention.

FIG. 15 is an exploded view of the coaxial plug according to the fourth embodiment of the present invention.

FIG. 16 is a diagram showing a state before caulking in the coaxial plug according to the fourth embodiment of the present invention.

FIG. 17 is a diagram showing a state in which the coaxial plug according to the fourth embodiment of the present invention is attached to a coaxial connector.

FIG. 18 is a diagram showing a configuration of a conventional coaxial plug.

[Explanation of symbols]

1 coaxial plug, 2 caulking, 3 coaxial cable, 11 plug body, 11a cable insertion part, 11
b retaining portion, 11c ring-shaped portion, 11d cable contact groove, 11e spring storage groove, 11f curl processing portion, 12 rotary mounting body, 12a main body storage portion, 12b
Mounting screw part, 12c spring storage part, 12d rotational engagement part, 12e locking protrusion, 13 disk spring,
13a ring-shaped joint, 13b spring piece, 14
Ring-shaped spring, 14a first joining piece, 14b
2nd joining piece, 14c punching part, 14d spring piece, 31 jacket, 32 internal insulator, 33 core wire, 34
Braided wire, 50 coaxial connector, 100 coaxial plug,
111 plug body, 111a cable insertion part, 11
1b retaining portion, 111c ring-shaped portion, 111d cable contact groove, 111e flange portion, 111f curl processing portion,
112 rotation mounting body, 112a main body storage section, 112b
Mounting screw part, 112c Spring storage part, 112d
Rotary engaging part, 112e locking protrusion, 113 first ring-shaped spring, 114 second ring-shaped spring, 2
00 coaxial plug, 211 plug body, 211a cable insertion part, 211b retaining part, 211c ring-shaped part, 211d cable contact groove, 211e collar part, 21
1f Curl processing part, 212 Rotating mount, 212a
Main body storage part, 212b mounting screw part, 212c spring storage part, 212d rotational engagement part, 212e locking step part, 213 first ring-shaped spring, 214 second ring-shaped spring, 250 coaxial plug, 216 plug body, 261a cable Insertion part, 261b retaining part,
261c ring-shaped portion, 261d cable contact groove, 2
61e Collar part, 261f Ring-shaped protruding part, 262 Rotating mount, 262a Main body storing part, 262b Mounting screw part, 262c Spring storing part, 262d Rotating engaging part, 262e Locking protrusion, 262f Caulking part, 2
63 first ring-shaped spring, 264 second ring-shaped spring, 300 coaxial plug, 302 caulking ring, 311 plug body, 311a cable insertion portion,
311b retaining portion, 311c ring-shaped portion, 311d
Cable contact groove, 311f protrusion, 312 rotary mount

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01R 17/04 H01R 9/05 H01R 103: 00

Claims (8)

(57) [Claims] 1. A coaxial plug attached to the tip of a coaxial cable, comprising: a ring-shaped portion, a cylindrical curled portion formed so as to protrude from one side surface of the ring-shaped portion, and the ring-shaped portion. A plug body that is formed so as to project from the other side surface and that includes a cable insertion portion that can be inserted between the inner insulator of the coaxial cable and the braided wire, and a spring housing formed on one side surface of the ring-shaped portion. A disk-shaped spring housed in the groove, a rotation engagement portion and a mounting screw portion that are formed in a substantially cylindrical shape and that are formed in a substantially central portion of the inner peripheral surface and project inward, and an inner peripheral surface. A main body accommodating part for accommodating the ring-shaped part formed at one end thereof, and a spring accommodating part for accommodating a spring accommodating part formed at the other end of the inner peripheral surface; and accommodating in the spring accommodating part. With ring-shaped spring The curled portion is rotatably engaged with the rotary engaging portion, the plug body is rotatable with respect to the rotary mounting body, and the rotary mounting body is coaxial. A rotary coaxial plug, which is curled so that a gap is formed between the tip of the coaxial connector and the curled portion when attached to the connector. 2. The rotary coaxial plug according to claim 1, wherein the ring-shaped spring is formed by bending a band-shaped elastic metal plate into a ring shape. 3. A coaxial plug attached to the tip of a coaxial cable, comprising: a ring-shaped portion, a cylindrical curled portion formed so as to project from one side surface of the ring-shaped portion, and the ring-shaped portion. A plug body that is formed so as to project from the other side surface and that includes a cable insertion portion that can be inserted between the inner insulator of the coaxial cable and the braided wire, and is formed into a substantially cylindrical shape, and the inner peripheral surface thereof The inwardly projecting rotary engagement portion and mounting screw portion formed in the substantially central portion of the main body, the main body storage portion formed at one end portion of the inner peripheral surface, and the spring storage portion formed at the other end portion of the inner peripheral surface. And a first ring-shaped spring accommodated in the main body accommodating portion in a state of being fitted into the ring-shaped portion, and a second ring-shaped spring accommodated in the spring accommodating portion. Prepared, curled before When the curl processing portion is rotatably engaged with the rotary engagement portion, the plug body is rotatable with respect to the rotary mounting body, and the rotary mounting body is mounted on the coaxial connector. The rotary coaxial plug is curled so that a gap is formed between the tip of the coaxial connector and the curled portion. 4. The locking protrusion that locks the spring stored in the spring storage portion so as not to slip out, is formed at the tip of the spring storage portion. The rotary coaxial plug described in 3. 5. A coaxial plug attached to the tip of a coaxial cable, comprising: a ring-shaped portion, a cylindrical curl processing portion formed so as to project from one side surface of the ring-shaped portion, and the ring-shaped portion. A plug body that is formed so as to project from the other side surface and that includes a cable insertion portion that can be inserted between the inner insulator of the coaxial cable and the braided wire, and is formed into a substantially cylindrical shape, and the inner peripheral surface thereof The inwardly projecting rotary engaging portion and the spring accommodating portion formed in the substantially central portion of the main body, the main body accommodating portion formed at one end of the inner peripheral surface, and the mounting screw formed at the other end of the inner peripheral surface. And a first ring-shaped spring accommodated in the main body accommodating portion in a state of being fitted into the ring-shaped portion, and a second ring-shaped spring accommodated in the spring accommodating portion. Prepared, curled before When the curl processing portion is rotatably engaged with the rotary engagement portion, the plug body is rotatable with respect to the rotary mounting body, and the rotary mounting body is mounted on the coaxial connector. The rotary coaxial plug is curled so that a gap is formed between the tip of the coaxial connector and the curled portion. 6. The rotary coaxial plug according to claim 3, wherein the ring-shaped spring is formed by bending a band-shaped elastic metal plate into a ring shape. 7. A collar portion for locking the first ring-shaped spring fitted in the ring-shaped portion so as not to slip out is formed so as to project from one end of the ring-shaped portion. The rotary coaxial plug according to claim 3 or 5. 8. A coaxial plug attached to the tip of a coaxial cable, comprising: a ring-shaped portion, a cylindrical ring-shaped protruding portion formed to protrude from one side surface of the ring-shaped portion, and the ring-shaped portion. A plug body that is formed so as to project from the other side surface and that has a cable insertion portion that can be inserted between the inner insulator of the coaxial cable and the braided wire; A protruding step portion and a mounting screw portion into which the ring-shaped protruding portion formed in the substantially central portion of the surface is inserted, a main body storage portion formed at one end portion of the inner peripheral surface, and the other end portion of the inner peripheral surface. A rotary mounting body including a formed spring storage portion and a caulking portion formed so as to extend from the main body storage portion; and a rotary mounting body that is stored in the main body storage portion while being fitted into the ring-shaped portion. 1 ring-shaped spring and the spring A second ring-shaped spring housed in the housing part, wherein the crimped part is rotatably engaged with a rear end of the ring-shaped part, and the plug body is attached to the rotary mounting body. In addition to being rotatable with respect to each other, when the rotary mounting body is mounted on the coaxial connector, a gap is formed between the tip of the coaxial connector and the ring-shaped protrusion. And a rotating coaxial plug.