JP2001189180A - Coaxial connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coaxial connector for high frequency which can take matching with the characteristic impedance and firmly connect coaxial cables. SOLUTION: A plug 20 and a jack 40 of a coaxial connector include a core conductor connection means for tying exposed leading ends 8a of core conductors 8 in state surrounded with insulators 5 of a coaxial cables D1, D2 to which the plug and the jack are mounted, a connection means of an outer conductor 4 for connecting the outer conductors 4 using interposed tubing members 21, 22, 23 with a given distance to the core conductors 8 maintained identical with that to the coaxial cables of chacteristic impedances (e.g. 75 Ω) of the coaxial cables D1, D2, and an engagement means for engaging a recess 28 to a convex portion 48a of the jack 40 to fix the plug 20 to the jack 40 as a taper T of fittings 30 in the plug 20 is slid in Z direction by screws 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial connector, and more particularly to a high-frequency coaxial connector that can be easily and firmly connected with ideal characteristic impedance matching.

[0002]

2. Description of the Related Art In general, for transmitting a high-frequency signal, a center conductor composed of a single conductor, an insulator such as Teflon or phenol resin surrounding the center conductor, and a mesh-shaped outer conductor surrounding the insulator are generally used. , An insulating sheath, and a coaxial cable. The characteristic impedance of the coaxial cable is determined by the diameter of the center conductor, the inner diameter of the outer conductor, and the dielectric constant of an insulator therebetween. The characteristic impedance of a general coaxial cable is roughly classified into two types, 50Ω and 75Ω. There are seeds.

In order to connect the coaxial cables, a coaxial connector composed of a plug and a jack provided at each end thereof is generally used. One example of the general-purpose plug 1 shown in FIG. A is a cylindrical instrument main body made of a conductor, and one end of the instrument main body A is formed as a receiving port B for conductive connection to a jack (not shown). C is a clamp extending from the other end of the instrument body, and the instrument body A can be held at one end of the coaxial cable D by caulking (sometimes soldering) the clamp C to an external conductor. . On the other hand, the instrument body A
Has a connection terminal E protruding from one end thereof via an insulator.
(Contact pin) is fixed, and a cap F surrounding the clamp C is connected to the other end.

The plug 1 is connected to a jack fixed to a chassis of an electric device such as a television receiver or a video deck or a jack provided at an end of another coaxial cable. At this time, the connection terminal E is inserted into the jack, and the socket B of the instrument main body is fitted to the outer periphery of the conductive member of the jack. The structure of the jack is the same except that the jack has a shape suitable for fitting corresponding to the connection terminal E and the socket B of the plug 1.

As described above, both the plug and the jack of the conventional coaxial connector have a form in which the center conductor of the coaxial cable D is soldered to a connection terminal (contact pin) which is thicker than itself, and the connection terminals are in conductive contact with each other. I am taking it.

[0006] This also applies to high-frequency high-grade coaxial connectors. The connection procedure for the jack shown in the sectional views of FIGS. 7 and 8 will be described. As shown in FIG. 7A, the insulating sheath 3 of the coaxial cable D is cut and the fastener 12, the bushing 13, and the band 14 are cut. After inserting a clamp 6 between the outer conductor 4 and the insulating sheath 3 as shown in FIG. 7B, the outer conductor 4 is folded back to provide a gap between the outer conductor 4 and the insulator 5. And insert the collar 7. Next, as shown in FIG. 7 (c), the outer conductor 4 is cut with a cutter at the end of the clamp 6 at the boundary of the collar 7, and the insulator 5 is cut at the end face of the collar 7 so as not to damage the center conductor 8. I do. Next, as shown in FIG. 8 (d), the one shown in FIG. 7 (c) is connected to the first cylindrical body 9 of the conductor in which the connection terminal 16 is disposed via an insulator (phenol resin or the like) 15. The outer conductor 4 is soldered to the first cylindrical body 9 by matching the slit of the first cylindrical body 9 with the slit of the clamp 6 (the portion indicated by reference numeral H1), and a soldering iron is inserted through the window of the first cylindrical body 9. Then, the connection terminal 16 and the tip end of the center conductor 8 are soldered (the portion indicated by reference numeral H2). Next, the band 14 is applied to the flange of the clamp 6 and caulked as shown in FIG. Finally, as shown in FIG. 8 (f), the bushing 13 is inserted into the second cylindrical body 18 of the conductor and the fastener 12 is tightened tightly.
Is a configuration in which the band 14 is pressed and tightened so as to be pressed against the outer conductor 4.

[0007]

As described above, in the above conventional coaxial connectors, the center conductors 8 are all connected via connection terminals (contact pins), and the center conductors 8 are connected through the windows of the plug and the jack. It had to be soldered to the terminals. This is a very troublesome operation, and there is a problem that the insulator 15 is melted by the heat of the solder to cause a short circuit between the outer conductor 4 and the center conductor 8.

Further, it is difficult to process the above plugs and jacks, which causes an increase in cost.

Further, in the case of a high-frequency signal transmission line, reflection always occurs when passing through lines having different impedances. Therefore, it is essential to avoid such reflection as much as possible in order to increase transmission efficiency. Since the coaxial connector also constitutes a part of the line, it is important to design the connector itself so as to have the same characteristic impedance as the coaxial cable (usually 50Ω or 75Ω).

[0010] That is, there is a coaxial connector which requires matching of the characteristic impedance and has been conventionally matched.
Sufficient matching has not been obtained. As described above, the characteristic impedance of the coaxial cable D is determined by the diameter of the center conductor 8, the inner diameter of the outer conductor 4, and the permittivity of the insulator 5 therebetween. Therefore, the connection terminal 16 becomes thicker and there is a region around the connection terminal 16 where there is no insulator (a region of air and a dielectric constant different from that of the insulator 5). In this case, the diameter of the coaxial connector must be increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object the purpose of making the end faces of the central conductors of coaxial cables directly facing each other without conductive connection terminals for high frequency use by conducting contact. Another object of the present invention is to provide an easy-to-use coaxial connector that achieves ideal characteristic impedance matching of a structure that is conductively connected by interposing a tubular member that connects outer conductors without substantially changing their inner diameters. .

[0012]

In order to achieve the above object, the present invention provides: (1) a coaxial structure comprising a center conductor, an insulator surrounding the center conductor, an outer conductor surrounding the insulator, and an insulating sheath. A coaxial connector comprising a cylindrical plug and a jack for connecting the ends of a cable, wherein the plug and the jack are connected to each other at the ends of central conductors whose front end surfaces are exposed while being surrounded by the insulator of the coaxial cable to which both are attached. And a central conductor connecting means for connecting the external conductors by direct conductive contact, and an external conductor in which the external conductors are conductively connected by an interposed cylindrical member while maintaining a constant distance to the central conductor so as to be equal to the characteristic impedance of the coaxial cable. An object of the present invention is to provide a coaxial connector comprising: conductor connecting means; and fastening means for fastening and fixing the plug to the jack. (2) In a preferred embodiment, the plug has a cable insertion hole having a diameter substantially equal to the outer diameter of the coaxial cable on the non-connection end side of the plug and the jack as a central conductor connecting means of the plug and the jack. A split groove is formed on the connection end side of the jack and a concave portion for exposing only the end portion of the center conductor and the end portion of the center conductor through a hole in the bottom portion, and the coaxial cable insulator is formed on the connection end side of the jack. An insulator having a through-hole having a diameter equal to the outer diameter of the coaxial cable to be connected to the coaxial cable and an end portion of the center conductor are inserted into the through-hole to be fastened in the hole, and an insulator of the coaxial cable at the plug side is provided. A coaxial connector according to (1), characterized in that the coaxial connector has a convex portion that fits into the concave portion while allowing an end portion of the central conductor to pass through an opening of the insertion hole. (3) In a preferred aspect, the present invention provides, as an external conductor connecting means for the plug and the jack, a spring disposed in the plug and the jack and inserted around the insulating sheath of the coaxial cable, and one end pressed against the spring. A shield member that is inserted around the outer conductor that is exposed while the insulating outer skin is peeled off, and a toothed washer that presses the outer conductor whose end is folded back to the shield cover, and a cylindrical member including a tubular member. The present invention provides a coaxial connector according to the above (1) or (2). (4) In a further preferred aspect, the present invention provides an external conductor connecting means for connecting the plug and the jack, which is disposed inside the plug and the jack and which is exposed by peeling off the insulating sheath around the coaxial cable and the insulating sheath. A shield cover which is inserted around the conductor and presses the folded portion of the end of the outer conductor of the coaxial cable at one open end against the inner surface of the plug or jack and has a tapered inner surface at the other open end;
(1) The above-mentioned (1) or, further comprising: a holding member having an insertion portion provided with a split groove which is inserted around the insulating sheath of the coaxial cable and press-fitted into the taper of the shield cover. A coaxial connector according to (2) is provided. (5) In a preferred aspect, the present invention provides, as a fastening means for fastening the plug to the jack, a recessed conductive member having a split groove on the connection end side of the plug, and the plug on the connection end side of the jack. The plug has a convex conductive member fitted with the concave conductive member, a cylindrical main body provided with a female screw mounted on the outer periphery of the plug, and a tapered portion on the inner peripheral surface for tightening the outer peripheral surface of the concave conductive member. (1) or (2), comprising: a collet cap serving as a base.
Alternatively, the present invention provides a coaxial connector according to (3) or (4).

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The present embodiment relates to a coaxial connector comprising a cylindrical plug and a jack for connecting the ends of coaxial cables. FIG. 1 shows the connection of the plug 20 of the coaxial connector according to the present invention to the coaxial cable D1. FIG. 2 is a sectional view showing a state where the jack 40 is attached to the end side, and FIG. 2 is a sectional view showing a state where the jack 40 is attached to the connection end side of another coaxial cable D2. FIG. 3 is a sectional view showing a state in which coaxial cables are connected to each other using the plug and jack of the coaxial connector.

The plug 20 and the jack 40 are connected to the center of the coaxial cables D1 and D2 to which both ends are mounted by being in direct conductive contact with the ends of the center conductors 8 whose end surfaces 8a are exposed while being surrounded by the insulator 5 of the coaxial cables D1 and D2. Conductor connection means and characteristic impedance of coaxial cables D1 and D2 (for example, 75Ω)
External conductor connecting means for electrically connecting the external conductors to each other by means of an interposed tubular member while maintaining the distance to the center conductor 8 equal to the coaxial cable so as to be equal to;
Fastening means for fastening the plug 20 to the jack 40. Hereinafter, the structure of the plug and the jack of FIGS. 1 and 2, which are preferred examples of the center conductor connecting means, the outer conductor connecting means, and the fastening means, will be described.

The plug 20 in FIG. 1 has, as a center conductor connecting means, a first cylindrical tube having a cable insertion hole 25 having a diameter substantially equal to the outer diameter of the coaxial cable D1 and a male screw threaded into a screw portion 31. A shell 26 and the first shell 2
And a second shell 27 having a concave portion 28 formed by an annular wall 27a provided with a split groove on the connection end side and screwed with the male screw with a female screw of a screw portion 31.
The concave portion 28 has an inner diameter larger than the diameter of the insulator 5 of the coaxial cable D1. Only about several millimeters (X in FIG. 1) of the insulator 5 on the side to which the coaxial cable D1 is connected and the end portion of the center conductor 8 are provided. Project through a hole 27b having the same diameter as the insulator 5 provided at the bottom.

On the other hand, the jack 40 shown in FIG. 2 includes a first shell 46 having a cable insertion hole 45 having a diameter substantially equal to the outer diameter of the coaxial cable D2, similarly to the plug 20, as the center conductor connecting means. 46, which is screwed with a screw portion 51, and has a through hole 52 having a diameter equal to the outer diameter of the insulator 5 of the coaxial cable D2 at the connection end side, and a convex portion 48a which fits into the concave portion 28 of the plug 20. And a second shell 48 comprising: The first shells 26 and 46 and the second shells 27 and 48 are conductors such as brass.

According to the center conductor connecting means, as shown in FIG. 3, the insulator 5 on the side to which the coaxial cable D2 is connected and the end portion of the center conductor 8 are connected to the insertion hole 52 from the opposite side. The plug 2 is inserted into the hole and retained inside the hole by a few millimeters (X in FIG. 2) from the opening of the insertion hole 52, so that the plug 2
The concave portion 28 and the convex portion 48a are substantially tightly fitted while the insulator 5 of the coaxial cable D1 and the end portion of the center conductor 8 projecting into the concave portion 28 on the 0 side are inserted through the opening of the insertion hole 52 of the jack 40. be able to. And the coaxial cable D
The end surfaces of the center conductors 1 and 2 are bonded and conductively connected in the insertion hole 52 of the projection 48. At the same time, the end faces of the insulator 5 are also aligned and adhered to each other, so that the center conductor 8
Since there is no exposed region, no change occurs in the dielectric constant at the bonding portion. In other words, as if the coaxial cables D1, D
2 is connected to one. At this time, in order to ensure conductive connection between the center conductors 8, the end faces of the center conductors 8 are flattened to be in surface contact, and the coaxial cables D 1, D 2
It is important that they be firmly fixed by pressing them together.

Next, as the cylindrical member in the external conductor connecting means, the plug 20 and the jack 40 shown in FIGS.
Inside, a spring 21 inserted around the insulating sheath 3 of the coaxial cables D1 and D2, and a shield cover inserted around the outer conductor 4 whose one end is pressed by the spring 21 and the insulating sheath 3 is peeled off and exposed. 22, and a toothed washer 23 for holding the outer conductor 4 whose end is folded back on the shield cover 22 are provided.

Thus, the first shell 2 of the plug 20
When the second shell 27 and the second shell 27 are screwed together with the screw portion 31, the spring 21 and the shield cover 22 narrowly provided between the two.
The toothed washer 23 is pressed to tighten and fix the outer conductor 4. The shield cover 22 and the toothed washer 23 are metal conductors, and the inner diameter of the toothed washer 23 and the hole 27b at the bottom of the concave portion 28 of the second shell 27 are substantially equal to the outer diameter of the insulator 5. The center conductor 8 is maintained at a fixed distance equal to the distance between the outer conductor 4 of the coaxial cable D1 and the center conductor 8. The toothed washer 23
These teeth are inclined in the direction of the connecting portion of the center conductor 8 so that the coaxial cable D1 is easily inserted when inserted, and conversely, the teeth do not bite the outer periphery of the insulator 5 in the exit direction. According to this, the coaxial cable D1 can be firmly connected and fixed to the plug 20 while the external conductor 4 is fixed.

Further, the outer shell 4 of the coaxial cable D2 is firmly connected and fixed to the jack 40 by screwing the first shell 46 and the second shell 48 of the jack 40 with the screw portion 51 in the same structure as described above. Can be.

The plug 20 and the jack 4 to which the outer conductors 4 of the coaxial cables D1 and D2 are respectively connected and fixed as described above.
In the case of 0, the external conductors 4 conduct when the concave portions 28 and the convex portions 48a of both are fitted by the center conductor connecting means.

Next, the central conductor 8 and the external conductor 4 of the coaxial cables D1 and D2 connected by the central conductor connecting means and the external conductor connecting means are simply brought into conductive contact by fitting the concave portion 28 and the convex portion 48a. Only if the coaxial cables D1 and D2 are pulled apart. Therefore, a fastening means for firmly fixing the fitting between the concave portion 28 and the convex portion 48a must be provided. As the fastening means, the coaxial connector shown in FIGS. 1 and 2 has a second shell as a concave conductive member formed of an annular wall 27a (having a shape like a collet) provided with a split groove on the connection end side of the plug 20. 27, a second shell 48 as a convex conductive member fitted on the connection end side of the jack 40 with the concave portion 28 of the second shell 27 of the plug 20, and a threaded portion 32 And a collet cap 33 having a base 30 having a tapered portion T for tightening the annular wall 27a of the recessed conductive member on the inner peripheral surface thereof. .

In FIG. 3, after the concave portion 28 of the plug 20 and the convex portion 48a of the jack 40 are fitted so that the center conductors 8 make conductive contact with each other, the main body portion 29 of the collet cap 33 of the plug 20 is connected to the second shell 27. When the screw 30 is turned, the base 30 retreats in the direction of arrow Z, and the tapered portion T tightens the annular wall 27a to strongly press the outer periphery of the convex portion 48a of the jack 40. Become. Thus, the concave portion 28 on the plug 20 side and the convex portion 48a on the jack 40 side are firmly fixed and there is no possibility of loosening. As a result, by using the plug 20 and the jack 40 of the present coaxial connector, the connection of the coaxial cable can achieve high reliability and ideal characteristic impedance matching by a simple operation that does not require soldering.

Next, FIG. 4 is a sectional view showing a state in which a plug of a coaxial connector according to another embodiment of the present invention is attached to a connection end side of a coaxial cable, and FIG. FIG. 2 is a cross-sectional view showing a state where a jack of a connector is attached to a connection end side of a coaxial cable.

In this embodiment, coaxial cables D1 (D1 and D2) are provided inside the plug 50 and the jack 60 as external conductor connecting means between the plug 50 and the jack 60.
2) is inserted around the insulating sheath 3 and around the outer conductor 4 where the insulating sheath 3 is peeled off and exposed, and the folded portion 4a of the end of the outer conductor 4 of the coaxial cable D1 (D2) is opened at one open end. A shield cover 53 pressed against the inner surface of the plug or jack and provided with a taper t on the inner surface of the other open end;
A structure comprising a cylindrical member comprising a retaining ring 55 having an insertion portion provided with a split groove which is inserted around the insulating sheath 3 of the coaxial cable D1 (D2) and press-fit into the taper t of the shield cover 53. The structure of the cylindrical members (the shield cover 53 and the retaining ring 55) in the external conductor connecting means is further simplified and the coaxial cable D1 (D2) is more strongly connected to the plug 50 and the jack 60 than in the previous embodiment. Will be connected.

Referring to the plug 50, in FIG. 4, the tip of the insertion portion at one end where a split groove of the retaining ring 55 is provided in the gap of the taper t of the shield cover 53 (the tapered portion has a gently tapered portion). The first shell 26 is screwed into the second shell 27 by the screw portion 31 to push the other end of the press-stop ring 55 into the inside of the plug.
Inserts the shield cover 53 toward the inner wall of the second shell 27 and inserts the taper t
As a result, the diameter decreases toward the center conductor 8, and the outer periphery of the insulating sheath 3 of the coaxial cable D1 is strongly tightened. In other words, the holding ring 55 is inserted between the taper t of the shield cover 53 and the insulating sheath 3 of the coaxial cable D1 as a wedge, so that the coaxial cable D1 is firmly fixed.
Is fixed in the second shell 27 of the plug 50.

As shown in FIG. 5, the jack 60 has the same cylindrical member (shield cover 53 and retaining ring 55) as the plug 50, and the coaxial cable D2 is firmly connected to the second portion of the jack 60. It is fixed in the shell 48.

In this embodiment, the spring 21 and the toothed washer 23 of the previous embodiment are not required. Instead, a holding ring 55 is added, and the shield cover 53 is provided with a taper t. Thus, the strength of fixing the connection of the coaxial cables D1 and D2 to the plug 50 and the jack 60 by the wedge effect is also excellent.

Note that the end surface 8a of the center conductor 8 of the coaxial cables D1 and D2 from which the insulating sheath 3 has been peeled off is a conductive material that can reliably project (about 0.5 mm) from the end surface of the surrounding insulator 5 slightly. Preferred for connection.

It is needless to say that the coaxial cables D1 and D2 can be applied not only to flexible cables but also to semi-rigid cables and also to coaxial cables having characteristic impedances other than 50Ω and 75Ω. .

[0032]

As is apparent from the above description, according to the coaxial connector of the present invention, (1) the central conductors of the coaxial cables are brought into direct conductive contact, and the insulator and the outer conductor have the same diameter. Because they are connected continuously, the characteristic impedance is ideally matched,
The reflection generated at the coaxial connector during transmission of a high-frequency signal can be reduced. (2) Further, the coaxial cables are firmly connected to each other, and there is no possibility of the cables coming off, so that the reliability is high. (3) Further, the connection of the coaxial cable to the plug and the jack is simply performed by inserting the cylindrical member, turning the screw portion, and tightening after stripping the insulating sheath, and does not require soldering. . (4) Further, the connection is made only by inserting the plug and the jack into each other and then turning and tightening the screw, so that soldering becomes unnecessary, and the connection work is simple.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state in which a plug of a coaxial connector according to the present invention is attached to a connection end side of a coaxial cable.

FIG. 2 is a cross-sectional view showing a state where the jack of the coaxial connector according to the present invention is attached to the connection end side of the coaxial cable.

FIG. 3 is a sectional view showing a state in which coaxial cables are connected to each other using a plug and a jack of the coaxial connector.

FIG. 4 is a cross-sectional view showing a state where a plug of a coaxial connector according to another embodiment of the present invention is attached to a connection end side of a coaxial cable.

FIG. 5 is a sectional view showing a state in which a jack of a coaxial connector according to another embodiment of the present invention is attached to a connection end side of a coaxial cable.

FIG. 6 is a partial sectional view showing the structure of a plug of a conventional general-purpose coaxial connector.

FIG. 7 is a diagram illustrating a method of connecting jacks of a conventional high-frequency coaxial connector.

FIG. 8 is a diagram illustrating a method of connecting jacks of a conventional high-frequency coaxial connector.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 insulating outer cover 4 outer conductor 4 a folded portion of outer conductor 5 insulator 8 center conductor 8 a tip end surface 20, 50 plug 21 spring 22, 53 shield cover 23 toothed washer 24, 52 insertion hole 26, 46 Second shell 27a Annular wall 27b Hole 28 Recess 29 Body 30 Cap 31, 51 Screw 33 Collet cap 40, 60 Jack 45 Cable insertion hole 48a Convex 55 Press-down ring A Instrument body B Receptor C Clamp D, D1, D2 Coaxial cable E Connection terminal (contact pin) F Cap T Taper part t Taper

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[Procedure amendment]

[Submission date] June 1, 2000 (2006.1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

Claims (5)

[Claims] 1. A center conductor, an insulator surrounding the center conductor,
An outer conductor surrounding the insulator, an insulating sheath, and a coaxial connector including a cylindrical plug and a jack for connecting ends of the coaxial cable including the plug and the jack. The distance between the center conductor connecting means, which connects the ends of the center conductors whose exposed end faces are exposed directly while being surrounded by the insulator, and the center conductor so as to be equal to the characteristic impedance of the coaxial cable, is fixed. A coaxial connector comprising: external conductor connecting means for electrically connecting external conductors to each other by a tubular member interposed while being held; and fastening means for fastening and fixing the plug to the jack. 2. As a means for connecting the center conductor of the plug and the jack, a cable insertion hole having a diameter substantially equal to the outer diameter of the coaxial cable is provided on the non-connection end side of the plug and the jack, and a split groove is provided on the connection end side of the plug. A recess formed to expose only the end portion of the center conductor and the insulator on the side to which the coaxial cable is connected, and having a diameter equal to the outer diameter of the insulator of the coaxial cable at the connection end side of the jack. The end of the insulator and the center conductor on the side to be connected to the coaxial cable having a hole is inserted into the insertion hole to be fixed in the hole, and the end of the insulator and the center conductor of the coaxial cable on the plug side is 2. The coaxial connector according to claim 1, further comprising a convex portion that fits into the concave portion while being inserted through an opening of the insertion hole. 3. 3. A spring disposed inside the plug and jack and inserted around the insulating sheath of the coaxial cable as an external conductor connecting means of the plug and jack, one end of which is pressed by the spring and the insulating sheath is peeled off. 3. A cylindrical member comprising: a shield cover inserted around the exposed outer conductor; and a toothed washer for pressing the outer conductor whose end is folded back to the shield cover. The coaxial connector according to 1. 4. As an external conductor connecting means for the plug and the jack, one of the coaxial cables is disposed inside the plug and the jack, and is inserted around the insulating outer sheath of the coaxial cable and around the outer conductor exposed by peeling the insulating outer sheath. A shield cover in which the folded portion of the end of the outer conductor of the coaxial cable is pressed against the inner surface of the plug or jack at the open end and a taper is formed on the inner surface of the other open end; And a press-stop ring having an insertion portion provided with a split groove which is press-fitted into the taper.
The coaxial connector according to 1. 5. As a fastening means for fastening and fixing a plug to a jack, a recessed conductive member provided with a split groove on the connection end side of the plug and a recessed conductive member of the plug are fitted on the connection end side of the jack. A collet cap comprising a convex conductive member, a cylindrical main body having a female screw mounted on the outer periphery of the plug, and a base having a tapered portion for tightening the outer peripheral surface of the concave conductive member on the inner peripheral surface; The coaxial connector according to claim 1, wherein the coaxial connector comprises: