JP2012221888A - Coaxial terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a coaxial terminal from easily coming off a coaxial plug seat even if a force is applied in an axial direction when it is attached to the coaxial plug seat.SOLUTION: A front part of a lock member 11e facing a square hole 10a of a plug outside conductor 10 faces a square window 13d of a mold part 13 as well when the mold part 13 is slid backward, allowing a coaxial plug 1 to be inserted in a plug seat 2. When the mold part 13 is slid frontward, an upper surface of the lock member 11e facing the square hole 10a abuts with the inner peripheral surface of a front cylinder part 13c of the mold part 13 and is moved downward, so that a lower surface of the lock member 11e is positioned in a large diameter part 10b of the plug outside conductor 10. By sliding the mold part 13 frontward after the coaxial plug 1 is inserted in the plug seat 2, the lower surface of the lock member 11e is brought into press contacted with the outer peripheral surface of the plug seat 2 and locked. As a result, the coaxial plug 1 is hard to come off even if a force is applied in an axial direction.

Description

  The present invention relates to a coaxial terminal provided at an end of a coaxial cable or a shielded cable.

A coaxial terminal such as an F-type plug is provided at the end of the coaxial cable that transmits a high-frequency signal having a high frequency. The coaxial terminal is attached to a coaxial connector seat provided in an electronic device that receives and outputs high-frequency signals.
Examples of the configuration of a coaxial plug to be attached to a conventional F-type coaxial connector are shown in FIGS. 24 is a side view showing the configuration of the conventional coaxial plug, FIG. 25 is a side view showing the configuration of the conventional coaxial plug in a sectional view, and FIG. 26 is an exploded view of the conventional coaxial plug. .

  The conventional coaxial plug 100 shown in these drawings includes a mold part 111 made of resin and a metal plug outer conductor 112, and a coaxial cable 113 is drawn from the mold part 111. In the coaxial plug 100, a plug pin 115 is disposed substantially on the central axis in the plug outer conductor 112 to have a coaxial configuration, and an internal spring 116 is disposed along the inner peripheral surface of the plug outer conductor 112. The internal spring 116 is a spring for elastically holding the plug external conductor 112 to the coaxial connector and making a stable electrical connection when the plug external conductor 112 is inserted into the coaxial connector. Further, an insulating ring portion 114 is disposed on the inner upper portion of the plug outer conductor 112.

  The coaxial cable 113 with the coaxial plug 100 attached to one end includes a core wire 113a, an internal insulator 113b that holds the core wire 113a along the substantially central axis of the coaxial cable 113, and an aluminum tape on the internal insulator 113b. And a braided wire 113d disposed on the sheath portion 113c so as to cover the sheath portion 113c, and a jacket molded on the braided wire 113d. As described above, the coaxial cable 113 has a double sheath structure including the sheath portion 113c and the braided wire 113d so that the high frequency characteristics are improved. The outer jacket at the tip of the coaxial cable 113 is removed, and this portion is placed in the U-shaped groove 112d. The exposed braided wire 113d is drawn from the opposite side through the U-shaped groove 112d and soldered to the outer peripheral surface of the plug outer conductor 112.

  The internal insulator 113b provided with the sheath portion 113c located inside the braided wire 113d is bent in an L shape, and the tip thereof is inserted into the insertion hole from the U-shaped groove portion 112d. The inner insulator 113b is removed at the tip of the coaxial cable 113 to expose the core wire 113a, and the plug pin 115 is fixed to the tip of the core wire 113a. In this case, since the inner insulator 113b is inserted into the insertion hole of the plug outer conductor 112 and the position thereof is regulated, the plug pin 115 fixed to the tip of the core wire 113a is substantially on the central axis of the plug outer conductor 112. Will be placed in. The mold portion 111 is configured by molding except for the front portion of the lower conductor 112c in the plug outer conductor 112.

  The assembly of the conventional coaxial plug 100 configured as described above will be described with reference to FIG. 26. The outer sheath at the tip of the coaxial cable 113 is removed, and the exposed braided wire 113d is removed from the internal insulator 113b. To summarize. Next, the tip of the internal insulator 113b is removed to expose the core wire 113a having a predetermined length. Then, the plug pin 115 of the coaxial plug 100 is attached to the exposed end of the core wire 113a. On the other hand, the insulating ring portion 114 made of the ring main body 114a is housed in the insertion space of the lower conductor 112c in the plug outer conductor 112, and an internal spring 116 bent in a cylindrical shape is formed under the insulating ring portion 114. Store. The internal spring 116 is formed by processing an elastic strip-like thin plate such as phosphor bronze, and a plurality of spring pieces 116b are formed by forming a plurality of notches 116a. A through hole 114b is formed in the ring main body 114a of the insulating ring portion 114. The core cable 113a of the coaxial cable 113 is mounted in the insertion hole communicating with the U-shaped groove portion 112d formed on the upper surface of the plug outer conductor 112 in which the insulating ring portion 114 and the inner spring 116 are housed. The plug pin 115 is inserted.

  In this case, the internal insulator 113b provided with the sheath portion 113c of the coaxial cable 113 is inserted into the insertion hole 112e. As a result, the core wire 113a is inserted into the through hole 114b in the insulating ring portion 114, and the position of the plug pin 115 attached to the tip of the core wire 113a is regulated by the through hole 114b. As a result, the plug pin 115 is disposed substantially on the central axis of the lower conductor 112c. Here, the coaxial cable 113 is bent in the extending direction of the U-shaped groove 112d so that the tip of the coaxial cable 113 is accommodated in the U-shaped groove 112d. Thereby, the front-end | tip part of the braided wire 113d put together comes to protrude from the U-shaped groove part 112d. Next, the protruding end of the braided wire 113 d is bent downward and soldered to the outer peripheral surface of the plug outer conductor 112. As a result, the braided wire 113d is connected to the outer peripheral surface of the plug outer conductor 112. Next, the end portion of the coaxial cable 113 is molded with the front portion of the lower conductor 112c in the plug outer conductor 112 remaining. Thereby, the coaxial plug 100 molded by the mold part 111 is assembled.

JP 2002-298994 A

When the conventional coaxial plug 100 is attached to the coaxial connector, the plug outer conductor 112 can be elastically held by the coaxial connector and can be stably connected to the inner peripheral surface of the plug outer conductor 112 in order to make a stable electrical connection. An internal spring 116 is disposed. The internal spring 116 is formed by processing an elastic band-shaped thin plate such as phosphor bronze, and a plurality of spring pieces 116b are formed by forming a plurality of notches 116a. As described above, in the conventional coaxial terminal, the internal spring is an essential component, and there is a problem that the internal spring is required and a structure for preventing the internal spring from falling off is required.
In addition, the conventional coaxial plug 100 has a push-on coupling method in which the coaxial plug is inserted into the coaxial connector, so that the specification is easy to handle. However, since the push-on coupling method is held only by the spring pressure of the internal spring 116 when mounted on the coaxial connector of the electronic device, it is easy to come off when a force is applied in the axial direction of the coaxial plug. There was a point. If the coaxial plug easily comes off in the axial direction after being mounted on the coaxial connector seat, the following dangers arise.
1. It comes off when touching the connected coaxial plug for cleaning electronic equipment.
2. When the connected coaxial cable is touched when cleaning the room, it comes off.
3. The connected coaxial plug comes off when the electronic device is moved.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a coaxial terminal that does not easily fall out of a coaxial connector seat when a force is applied in the axial direction when it is attached to the coaxial connector seat.

  The present invention provides a coaxial terminal that is attached to the end of a coaxial cable, has a cylindrical shape, has a large-diameter enlarged portion formed on the front side, and a small diameter that allows the cable to be inserted on the rear side. A metal plug outer conductor in which a diameter portion is formed and a plurality of holes are formed in the diameter-expanded portion; Forms a coaxial structure with the diameter portion, and is formed by extending forward from the outer periphery of the metal plug pin fixed to the tip of the core wire of the cable and the holding portion arranged in the enlarged diameter portion of the plug external conductor A plurality of locking pieces having a front portion facing the hole formed in the plug outer conductor, an insertion hole for holding a rear portion of the inserted plug pin, and a rear portion, and the cable Between the braided wire and the internal insulator An insulating support made of resin that is inserted into the front portion of the reduced diameter portion from the back of the enlarged diameter portion of the plug outer conductor, and the first cylindrical portion on the front side is connected to the outside of the plug. A diameter-increasing hole into which the diameter-expanded portion of the conductor is slidably inserted is formed, and a first insertion hole into which the diameter-reduced portion of the plug outer conductor is slidably inserted into the second cylindrical portion on the rear side And a second insertion hole through which the cable is slidably inserted, and a plurality of windows corresponding to the positions of the holes in the first cylindrical portion on the front side. A resin mold part formed up to, and when the mold part is slid rearward, the front part of the lock piece facing the hole comes to face the window, When the mold part is slid forward, the upper surface of the lock piece facing the hole is The main feature is that the bottom surface of the lock piece is positioned in the enlarged diameter portion of the outer conductor of the plug so that the lock portion is moved downward in contact with the inner peripheral surface of the first cylindrical portion. .

  According to the present invention, when the mold part is slid rearward, the front part of the lock piece facing the hole of the plug external conductor also faces the window of the mold part. It can be attached by inserting it into the stopper seat. Then, when the mold part is slid forward, the upper surface of the lock piece facing the hole is moved downward in contact with the inner peripheral surface of the first cylindrical part in the mold part, and the lower surface of the lock piece is It comes to be located in the enlarged diameter part of a plug outer conductor. As a result, after inserting the coaxial terminal into the coaxial connector seat, the lower surface of the lock piece is pressed against the outer peripheral surface of the coaxial connector seat and locked by sliding the mold part forward. Become. As a result, it is possible to obtain a coaxial terminal that is difficult to come off even when a force is applied in the axial direction. Further, if the flat portion is formed in the enlarged diameter portion of the plug outer conductor, the spring property is imparted, so that the inner spring can be omitted. Accordingly, a drop-off preventing structure that prevents the internal spring from falling off the plug external conductor can be omitted. Therefore, the coaxial terminal according to the present invention is difficult to come out even when a force is applied in the axial direction, and can be a coaxial terminal that can be manufactured at low cost without requiring an internal spring. become.

It is the side view and front view which show the structure of the 1st state of the coaxial plug concerning 1st Example of this invention. It is a side view which shows the structure of the 1st state of the coaxial plug concerning 1st Example of this invention with sectional drawing. It is a side view which shows the structure of the 2nd state of the coaxial plug concerning 1st Example of this invention. It is the front view which shows the structure of the 2nd state of the coaxial plug concerning 1st Example of this invention, and a side view shown with sectional drawing. It is the side view and front view which show the structure of the mold part of the coaxial plug concerning 1st Example of this invention. It is the front view which shows the structure of the mold part of the coaxial plug concerning 1st Example of this invention by AA sectional drawing, and is a side view shown by BB sectional drawing. It is the side view, front view, and rear view which show the structure of the plug external conductor of the coaxial plug concerning 1st Example of this invention with a semi-sectional view. It is the front view, side view, and rear view which show the structure of the plug pin of the coaxial plug concerning 1st Example of this invention. It is a figure which shows the structure which attached the plug pin of the coaxial plug concerning 1st Example of this invention to the coaxial cable. It is the side view which shows the structure of the insulation support body of the coaxial plug concerning 1st Example of this invention, and a side view shown with sectional drawing. It is the rear view and front view which show the structure of the insulation support body of the coaxial plug concerning 1st Example of this invention. It is a side view which shows the structure of the 1st state which mounted | wore the receptacle seat with the coaxial plug concerning 1st Example of this invention with sectional drawing. It is a side view which shows the structure of the 2nd state which mounted | wore the receptacle seat with the coaxial plug concerning 1st Example of this invention with sectional drawing. It is a side view which shows the structure of the 1st state of the coaxial plug concerning 2nd Example of this invention with sectional drawing. It is a side view which shows the structure of the 2nd state of the coaxial plug concerning 2nd Example of this invention with sectional drawing. It is the side view, front view, and back view which show the structure of the plug external conductor of the coaxial plug concerning 2nd Example of this invention. It is the side view which shows the structure of the plug outer conductor of the coaxial plug concerning 2nd Example of this invention by sectional drawing, and is a front view shown by CC sectional drawing. It is the side view and front view which show the structure of the mold part of the coaxial plug concerning 2nd Example of this invention. It is the front view which shows the structure of the mold part of the coaxial plug concerning 2nd Example of this invention, and a side view shown with sectional drawing. It is a side view which shows the structure of the insulation support body of the coaxial plug concerning 2nd Example of this invention, and a side view shown with sectional drawing. It is the rear view and front view which show the structure of the insulation support body of the coaxial plug concerning 2nd Example of this invention. It is a side view which shows the structure of the 1st state which mounted | wore the connector seat with the coaxial plug concerning 2nd Example of this invention with sectional drawing. It is a side view which shows the structure of the 2nd state which mounted | wore the connector seat with the coaxial plug concerning 2nd Example of this invention with sectional drawing. It is a side view which shows the structure of the conventional coaxial plug. It is a side view which shows the structure of the conventional coaxial plug with sectional drawing. It is a disassembled perspective view which shows the aspect which assembles the conventional coaxial plug.

1 to 4 show the configuration of a coaxial plug 1 which is a first embodiment of the coaxial terminal according to the present invention. FIG. 1A is a side view showing the configuration of the first state of the coaxial plug 1 of the first embodiment of the present invention, and FIG. 1B is a front view showing the configuration of the coaxial plug 1 in the first state. FIG. 2 is a side view showing the configuration of the coaxial plug 1 in the first state in a sectional view, FIG. 3 is a side view showing the configuration of the coaxial plug 1 in the second state, and FIG. FIG. 4A shows a front view showing the configuration of the state, and FIG. 4B shows a side view showing the configuration of the second state of the coaxial plug 1 in a sectional view. The first state is a free state in which the mold part 13 is slid rearward in the coaxial plug 1, and the second state is a locked state in which the mold part 13 is slid forward in the coaxial plug 1. .
The coaxial plug 1 of the first embodiment of the present invention shown in these drawings is an F-type coaxial plug that is attached to an F-type coaxial connector. The coaxial plug 1 according to the first embodiment includes a molded portion 13 made of synthetic resin, a metal plug outer conductor 10, an insulating support 11 disposed in the plug outer conductor 10, and a coaxial structure with the plug outer conductor 10. The coaxial cable 14 is drawn out from the rear part of the mold part 13. In the coaxial plug 1, the plug pin 12 is held in the plug outer conductor 10 by the insulating support 11, so that the coaxial plug 1 is arranged on the substantially central axis of the coaxial plug 1 to have a coaxial configuration. The enlarged diameter portion 10b of the plug outer conductor 10 is made of a thin metal having elasticity, and four rectangular holes 10a formed at intervals of about 90 ° and four flats that are recessed inwardly. Part 10f is formed. When the plug outer conductor 10 including the flat portion 10f is inserted into the plug seat, the coaxial plug 1 can be elastically held on the plug seat by the action of the flat portion 10f of the plug outer conductor 10. .

Here, the structure of the mold part 13 is shown in FIG. 5 and FIG. 5A is a side view showing the configuration of the mold portion 13, FIG. 5B is a front view showing the configuration of the mold portion 13, and FIG. 6A shows the configuration of the mold portion A- FIG. 6B is a side view showing the configuration of the mold part 13 in the BB sectional view.
As shown in these drawings, the mold portion 13 is made of a slightly hard vinyl chloride, polyethylene, synthetic resin such as AES (Acrylonitrile-Ethylene-Styrene resin), and the front cylindrical portion 13c having a large inner diameter is formed at the front portion. The outer conductor holding portion 13a is formed at the rear portion of the front cylindrical portion 13c, and the cable holding portion 13b having a reduced inner diameter is formed at the rear portion of the outer conductor holding portion 13a. The front cylindrical portion 13c is formed with an enlarged hole 13i having a large inner diameter, and four rectangular windows 13d communicating with the enlarged hole 13i at intervals of about 90 ° are formed on the outer peripheral surface. A rectangular groove 13e is formed in front of and behind the rectangular window 13d on the inner peripheral surface of the enlarged diameter hole 13i. The rectangular groove 13e serves as a groove for guiding a lock piece 11e of the insulating support 11 described later when the mold portion 13 is slid. Further, a flat portion 13f having a flat surface is formed on the inner peripheral surface of the four enlarged diameter holes 13i substantially in the middle between the rectangular window 13d and the rectangular window 13d. The flat portion 13f has a function of preventing rotation of the slidable mold portion 13 with respect to the plug outer conductor 10.

The outer conductor holding portion 13a has a front side connected to the front cylindrical portion 13c and a rear side connected to the cable holding portion 13b. For this reason, an enlarged diameter hole 13i is formed in the front side of the outer conductor holding portion 13a, and the diameter is reduced by a tapered hole formed in communication with the rear side of the enlarged diameter hole 13i. An outer conductor insertion hole 13h having a reduced inner diameter is formed in communication with the hole. An enlarged diameter portion 10b, which will be described later, of the plug external conductor 10 is slidably fitted into the enlarged diameter hole 13i of the front cylindrical portion 13c and the outer conductor holding portion 13a, and the outer conductor insertion hole 13h of the outer conductor holding portion 13a. A reduced diameter portion 10c described later of the plug outer conductor 10 is slidably fitted therein.
The cable holding portion 13b is connected to the outer conductor holding portion 13a, and an outer conductor insertion hole 13h is formed therein, and the cable insertion hole 13g further reduced in diameter is connected to the outer conductor insertion hole 13h. Is formed. A plurality of ring-shaped projecting pieces are formed on the outer peripheral surface of the cable holding portion 13b so as to be easily gripped without sliding with a finger. The coaxial cable 14 led out from the reduced diameter portion 10c of the plug outer conductor 10 is slidably inserted into the cable insertion hole 13g.

Next, the configuration of the plug external conductor 10 is shown in FIG. 7. FIG. 7A is a side view showing the configuration of the plug external conductor 10 in a half sectional view, and FIG. FIG. 7C is a front view showing the configuration, and FIG. 7C is a rear view showing the configuration of the plug outer conductor 10.
The plug outer conductor 10 shown in these drawings is formed by pressing a flat plate made of phosphor bronze for spring or stainless steel. The plug outer conductor 10 has a cylindrical diameter-enlarged portion 10b having a large diameter, a cylindrical diameter-reduced portion 10c having a small diameter, and a step portion 10d composed of a slope that smoothly connects the diameter-expanded portion 10b and the diameter-reduced portion 10c. It consists of and. A through hole 10e is formed over the entire plug outer conductor 10, and the inner diameter of the through hole 10e of the enlarged diameter portion 10b is substantially equal to the outer diameter of the plug seat on which the coaxial plug 1 is mounted. The inner diameter of the portion 10 c is substantially equal to the outer diameter of the coaxial cable 14 drawn from the coaxial plug 1.

Four rectangular holes 10a are formed at intervals of about 90 ° on the outer peripheral surface of the enlarged diameter portion 10b. This rectangular hole 10a is formed corresponding to the position of the rectangular window 13d formed in the mold part 13, and the shape thereof is substantially the same as the rectangular window 13d formed in the mold part 13. Yes. Furthermore, the flat part 10f which has a flat surface in the middle of the rectangular hole 10a and the rectangular hole 10a is formed by denting four enlarged diameter parts 10b inside. The flat portion 10f abuts against the flat portion 13f formed on the mold portion 13 into which the plug outer conductor 10 is slidably inserted, and rotates so that the mold portion 13 does not rotate with respect to the plug outer conductor 10. Stopping. Further, the flat portion 10f imparts spring properties to the enlarged diameter portion 10b. That is, when the coaxial plug 1 is attached to the plug seat, the expanded portion 10b of the plug external conductor 10 is elastically formed on the outer peripheral surface of the plug seat by the action of the flat portion 10f formed on the expanded portion 10b. Press contact. As a result, the coaxial plug 1 can be elastically held in the plug seat, and stable electrical contact can be obtained.
When the plug outer conductor 10 is fitted into the mold part 13 and the mold part 13 is slid rearward, the rectangular window 13d of the mold part 13 substantially overlaps the rectangular hole 10a of the plug outer conductor 10. . Further, when the mold part 13 is slid forward, the rectangular hole 10 a of the plug outer conductor 10 is blocked by the inner peripheral surface of the front cylindrical part 13 c of the mold part 13. Further, the thickness of the enlarged diameter portion 10b in the plug outer conductor 10 is about 0.2 mm so that sufficient spring strength can be obtained, but the thickness is about 0.1 mm to about 0.3 mm. Is preferred.

Next, the configuration of the plug pin 12 is shown in FIG. 8. FIG. 8 (a) is a front view showing the configuration of the plug pin 12, and FIG. 8 (b) is a side view showing the configuration of the plug pin 12. FIG. 4C is a rear view showing the configuration of the plug pin 12.
The plug pins 12 shown in these drawings are configured by bending a metal plate into an elongated pin shape. As shown in FIG. 8C, the pin portion 12a of the plug pin 12 is formed into a thin pin shape by bending both sides of the metal plate until the end faces come into contact with each other, and a sharp tip portion 12c is formed at the tip. Yes. A base portion 12b having a U-shaped cross section is formed on the rear side of the pin portion 12a, and a U-shaped tip edge is formed in a sawtooth shape. The core wire 14a of the coaxial cable 14 can be electrically fixed to the plug pin 12 by disposing the core wire 14a of the coaxial cable 14 in the base 12b and caulking the U-shaped portion inside. A tapered slope is formed at a portion connecting the pin portion 12a and the base portion 12b.

A configuration in which the core wire 14a of the coaxial cable 14 is mechanically and electrically fixed to the plug pin 12 is shown in FIG.
As shown in this figure, the coaxial cable 14 includes a core wire 14a, an internal insulator 14b that holds the core wire 14a along the substantially central axis of the coaxial cable 14, and a cover that covers the internal insulator 14b. The braided wire 14c is arranged, and a jacket 14d molded on the braided wire 14c. A core wire 14a is disposed on substantially the central axis of the braided wire 14c to form a coaxial structure. The core wire 14a is a stranded wire, and is disposed within the U-shaped base portion 12b. The core wire 14a is mechanically and electrically fixed to the base portion 12b by crimping the base portion 12b inward.

Next, the configuration of the insulating support 11 is shown in FIGS. 10 and 11. FIG. 10 (a) is a side view showing the configuration of the insulating support 11, and FIG. 10 (b) is the configuration of the insulating support 11. FIG. 11A is a front view showing the configuration of the insulating support 11, and FIG. 11B is a rear view showing the configuration of the insulating support 11.
The insulating support 11 shown in these drawings is formed by molding a synthetic resin such as polypropylene, and has a holding section 11a having a circular cross section and a large outer diameter, and a cylindrical fitting section 11b having a small outer diameter. And an inclined portion 11c that smoothly connects the holding portion 11a and the insertion portion 11b having a small outer diameter, and a cylindrical insertion portion 11d that has an outer diameter slightly smaller than the insertion portion 11b. . A first insertion hole 11g is formed in the insertion part 11d formed on the rear side of the fitting part 11b, and the inner diameter of the first insertion hole 11g is substantially equal to the outer diameter of the inner insulator 14b of the coaxial cable 14. ing. A second insertion hole 11h having an inner diameter smaller than that of the first insertion hole 11g is formed from the fitting part 11b to the holding part 11a via the inclined part 11c. The inner diameter of the second insertion hole 11h is substantially equal to the outer diameter of the base 12b having the largest outer diameter of the plug pin 12, and the outlet of the second insertion hole 11h is formed in a tapered shape and gradually decreases in diameter toward the outlet. Is formed. A tapered slope connecting the pin portion 12a and the base portion 12b of the plug pin 12 inserted into the second insertion hole 11h from the first insertion hole 11g side to the outlet of the tapered second insertion hole 11h. The base 12b is fitted into the second insertion hole 11h without coming into contact with the second insertion hole 11h. Further, a ring groove is formed on the front surface of the holding portion 11a so as to surround the second insertion hole 11h, and the thickness around the second insertion hole 11h in the holding portion 11a is reduced to have elasticity. .

The shape of the outer peripheral surface of the fitting portion 11b from the holding portion 11a through the inclined portion 11c is the inner peripheral surface from the back of the enlarged diameter portion 10b of the plug outer conductor 10 to the front portion of the reduced diameter portion 10c through the step portion 10d. It is almost equal to the shape. Further, four lock pieces 11e are formed at intervals of about 90 ° by extending forward from the outer periphery of the holding portion 11a slightly obliquely upward. The lock piece 11e is formed in an elongated rectangular shape and is supported by the holding portion 11a so as to be elastically movable up and down, and the diameter on the distal end side is larger than the outer diameter of the holding portion 11a. On the inner peripheral surface of the lock piece 11e, irregularities of a sawtooth portion 11f are formed, and when the insulating support 11 is inserted into the plug outer conductor 10, four rectangular holes 10a of the plug outer conductor 10 are formed. The front portions of the lock pieces 11e are positioned inside.
The cylindrical insertion portion 11d is inserted between the braided wire 14c of the coaxial cable 14 and the internal insulator 14b, and the diameter of the braided wire 14c at the inserted portion is increased so as to follow the outer peripheral surface of the insertion portion 11d. Is done. The outer diameter of the braided wire 14 c into which the insertion portion 11 d is inserted is an outer diameter that is slightly larger than the inner diameter of the reduced diameter portion 10 c of the plug outer conductor 10.

  Returning to FIG. 1 to FIG. 4, an insulating support 11 having a circular cross section made of synthetic resin is fitted into the through hole 10 e of the plug outer conductor 10. The insulating support 11 is disposed from the back of the enlarged diameter portion 10b to the front portion of the reduced diameter portion 10c via the stepped portion 10d, and the metal plug pin 12 supported by the insulating support 11 is provided with the enlarged diameter portion 10b. It is arrange | positioned on the center axis | shaft of this, and is set as the coaxial structure. Further, the front portions of the lock pieces 11e formed in the holding portion 11a of the insulating support 11 are respectively exposed from the four rectangular holes 10a formed in the enlarged diameter portion 10b of the plug outer conductor 10. Further, an insertion portion 11d formed at the rear portion of the insulating support 11 is inserted between the braided wire 14c and the internal insulator 14b in the coaxial cable 14 to which the coaxial plug 1 is attached at one end. Thereby, the braided wire 14c of this part is expanded in diameter and comes into pressure contact with the inner peripheral surface of the reduced diameter portion 10c, so that both are electrically connected. The tip of the core wire 14 a is fixed to the base portion 12 b of the plug pin 12. The plug pin 12 is held by the insulating support 11 by the rear portion of the plug pin 12 being inserted into a second insertion hole 11 h formed substantially on the central axis of the insulating support 11. And the mold part 13 is slidably inserted in the plug external conductor 10 from the rear side.

  In the first state where the mold part 13 is slid rearward in the coaxial plug 1, as shown in FIGS. 1 and 2, 4 formed on the front cylindrical part 13 c of the mold part 13. The three rectangular windows 13d overlap with the four rectangular holes 10a formed in the enlarged diameter portion 10b of the plug outer conductor 10. And the front part of the lock piece 11e formed in the holding | maintenance part 11a of the insulation support body 11 comes to face this rectangular hole 10a and rectangular window 13d which overlapped. As a result, the position of the lower surface of the lock piece 11e is substantially the position of the inner peripheral surface of the enlarged diameter portion 10b of the plug outer conductor 10, and the serrated portion 11f on the lower surface of the lock piece 11e does not protrude into the enlarged diameter portion 10b. At the same time, it is free to move up and down.

Here, when the mold part 13 is slid forward in the coaxial plug 1 in the first state, the lock piece of the insulating support 11 is moved as the front cylindrical part 13c of the mold part 13 moves forward. 11e is guided by a rectangular groove 13e formed on the inner peripheral surface of the front cylindrical portion 13c. Thereby, the upper surface of the lock piece 11e in the rectangular hole 10a is pressed down by the rectangular groove 13e, and the lock piece 11e moves downward (inward). In this second state, as shown in FIGS. 3 and 4, the tip of the front cylindrical portion 13 c of the mold portion 13 substantially coincides with the tip of the enlarged diameter portion 10 b of the plug outer conductor 10. Four rectangular holes 10 a formed in the enlarged diameter portion 10 b of the outer conductor 10 are covered with the inner peripheral surface of the front cylindrical portion 13 c of the mold portion 13. As a result, the position of the upper surface of the lock piece 11e is substantially restricted and locked to the position of the outer peripheral surface of the enlarged diameter portion 10b of the plug outer conductor 10, and the serrated portion 11f on the lower surface of the lock piece 11e is the enlarged diameter portion. It protrudes into 10b.
In addition, the flat part 13f formed in the inner peripheral surface of the front cylindrical part 13c of the mold part 13 is formed in the enlarged diameter part 10b of the plug outer conductor 10 irrespective of the first state and the second state. It comes into contact with the flat portion 10f. As a result, the mold part 13 is slidable on the plug outer conductor 10, but the rotation of the mold part 13 relative to the plug outer conductor 10 is prevented, and the relative position of the rectangular window 13d is not displaced from the rectangular hole 10a. Become.

A mode in which the coaxial plug 1 according to the first embodiment of the present invention described above is mounted on the spigot seat 2 is shown in FIGS. FIG. 12 is a side view showing the configuration of the first state in which the coaxial plug 1 of the first embodiment is mounted on the plug seat 2 in a sectional view, and FIG. 13 shows the coaxial plug 1 of the first embodiment in the plug seat. It is a side view which shows the structure of the 2nd state with which 2 was mounted | worn with sectional drawing.
The connector seat 2 shown in these drawings includes a shell 20 having a cylindrical shape made of metal and having a threaded outer peripheral surface, and an insulating support portion 22 that holds a central conductor 21 is fitted in the shell 20. Configured. The insulating support part 22 is divided into two parts, a front part and a rear part, and a hole into which the plug pin 12 in the coaxial plug 1 can be inserted is formed on the front surface of the front insulating support part 22. Further, a fitting insertion hole is formed along the central axis of the rear insulating support portion 22, and the central conductor 21 is fitted and fixed in the fitting insertion hole. The center conductor 21 is made of metallic material having elasticity such as phosphor bronze, and a plurality of divided spring pieces for elastically holding the plug pins 12 are formed at the front part, and a connection piece is formed at the rear part. ing. This spring piece is disposed in a storage space inside the insulating support portion 22.

  When the coaxial plug 1 according to the first embodiment provided at the tip of the coaxial cable 14 is attached to the plug seat 2, the coaxial plug 1 is a push-on coupling method, so that the coaxial plug 1 is plugged. Insert it into seat 2. At this time, the shell 20 is inserted into the enlarged diameter portion 10b of the plug outer conductor 10 of the coaxial plug 1, and the shell 20 is elastically held by the action of the flat portion 10f formed in the enlarged diameter portion 10b. . Further, the serrated portion 11 f at the front portion of the lock piece 11 e located in the rectangular window 13 d of the mold portion 13 is free with respect to the outer peripheral surface of the shell 20. A first state in which the coaxial plug 1 is inserted into the connector seat 2 is shown in FIG.

The user grasps the mold part 13 with his / her finger and inserts the coaxial plug 1 into the plug seat 2, but when the front surface of the shell 20 comes into contact with the front surface of the holding part 11 a of the insulating support 11, the coaxial plug 1 is further removed. 1 is prevented from being inserted into the plug seat 2. Then, the mold part 13 held by the user's finger comes to slide forward, and the tapered hole formed in the mold part 13 comes into contact with the step part 10d of the plug external conductor 10. At that time, the sliding stops. This state is the second state shown in FIG. 13, and the front part of the lock piece 11 e located in the rectangular window 13 d of the mold part 13 is formed on the inner peripheral surface of the front cylindrical part 13 c of the mold part 13. The rectangular groove 13e is pushed down to be locked. Then, the unevenness of the serrated portion 11 f formed on the lower surface of the front portion of the lock piece 11 e comes into pressure contact with the screw formed on the outer peripheral surface of the shell 20. At this time, since the unevenness of the sawtooth portion 11f enters and closely contacts between the screw grooves, even if an axial force (force in the pulling direction) is applied to the coaxial plug 1 in the state of FIG. Does not easily fall out of the connector seat 2.
When removing the coaxial plug 1 from the connector seat 2, the user applies a force in a direction in which the user grasps the mold part 13 with a finger and pulls it out. As a result, the mold part 13 slides rearward and the coaxial plug 1 is in the first state shown in FIG. In this first state, the lock piece 11e is free with respect to the outer peripheral surface of the shell 20, and since a force is applied in the pulling direction, the coaxial plug 1 can be pulled out from the plug seat 2 and removed. It becomes like this.

  The coaxial plug 1 according to the first embodiment of the present invention described above is different from the coaxial plug 1 according to the first embodiment in that the lock piece 11e facing the rectangular hole 10a formed in the enlarged diameter portion 10b of the plug outer conductor 10 is It is formed in the holding part 11a of the insulating support 11, and the lock part 11e is made free or pushed downward (inward) by sliding the mold part 13 back and forth. In the first state in which the lock piece 11e is free, the coaxial plug 1 can be attached to or removed from the plug seat. When the lock piece 11e is pushed downward (inward), the lower surface of the lock piece 11e is in contact with the lock piece 11e. The coaxial plug 1 is pressed against the outer peripheral surface of the stopper seat and locked so as not to easily come out of the stopper seat. Further, by forming the flat portion 10f in the plug outer conductor 10, the plug outer conductor 10 also serves as an internal spring. That is, the coaxial plug 1 of the first embodiment can be elastically held and stably connected by the plug outer conductor 10 without using an internal spring. Furthermore, since an internal spring is not required, the number of parts can be reduced, and an inexpensive coaxial plug 1 can be obtained.

Next, FIGS. 14 and 15 show the configuration of a coaxial plug 3 which is a second embodiment of the coaxial terminal according to the present invention. FIG. 14 is a side view showing the configuration of the first state of the coaxial plug 3 according to the second embodiment of the present invention in a sectional view, and FIG. 15 is a side view showing the configuration of the second state of the coaxial plug 3 in the sectional view. Shown in The first state is a free state in which the mold part 33 is slid rearward in the coaxial plug 3, and the second state is a locked state in which the mold part 33 is slid forward in the coaxial plug 3. .
Before describing the coaxial plug 3 of the second embodiment, the configuration of each part constituting the coaxial plug 3 will be described. First, the configuration of the plug external conductor 30 is shown in FIGS. 16 and 17. FIG. 16A is a side view showing the configuration of the plug external conductor 30, and FIG. 16B is the configuration of the plug external conductor 30. 16 (c) is a rear view showing the configuration of the plug outer conductor 10, FIG. 17 (a) is a side view showing the configuration of the plug outer conductor 30 in a cross-sectional view, and FIG. b) is a front view showing the configuration of the plug outer conductor 30 in a CC cross-sectional view.

  The plug outer conductor 30 shown in these drawings is formed by pressing a flat plate made of phosphor bronze for spring or stainless steel. The plug outer conductor 30 has a cylindrical diameter-enlarged portion 30b having a large diameter, a cylindrical diameter-reduced portion 30c having a small diameter, and a step portion 30d composed of a slope that smoothly connects the diameter-expanded portion 30b and the diameter-reduced portion 30c. It consists of and. A through hole 30e is formed over the entire plug outer conductor 30, and the inner diameter of the through hole 30e of the enlarged diameter portion 30b is substantially equal to the outer diameter of the plug seat on which the coaxial plug 3 is mounted. The inner diameter of the portion 30 c is approximately equal to the outer diameter of the coaxial cable 14 drawn from the coaxial plug 3.

Four engaging portions 30a are formed on the outer peripheral surface of the enlarged diameter portion 30b at intervals of about 90 ° by denting the enlarged diameter portion 30b into a serrated uneven shape, on the rear side of the engaging portion 30a. By flattening the enlarged diameter portion 30b, a flat portion 30f having a flat surface is formed. The engaging portion 30a and the flat portion 30f are formed on the inner side that is one step lower than the inner peripheral surface of the enlarged diameter portion 30b, and are engaged at the rear end of the flat portion 30f with the same height as the inner peripheral surface of the enlarged diameter portion 30b. A step portion 30g is formed. The engaging portion 30a and the flat portion 30f are formed corresponding to the position of a protruding portion 33f formed on the mold portion 33 described later. The flat portion 30f abuts on the upper surface of the protruding portion 33f formed on the mold portion 33 into which the plug outer conductor 30 is slidably inserted, and the mold portion 33 does not rotate with respect to the plug outer conductor 30. To prevent rotation. In addition, the engagement portion 30a and the flat portion 30f impart spring properties to the enlarged diameter portion 30b. That is, when the coaxial plug 3 is mounted on the plug seat, the enlarged portion of the plug external conductor 30 is formed on the outer peripheral surface of the plug seat by the action of the engaging portion 30a and the flat portion 30f formed on the enlarged portion 30b. 30b is elastically pressed. As a result, the coaxial plug 3 can be elastically held in the plug seat, and stable electrical contact can be obtained.
When the plug outer conductor 30 is fitted into the mold portion 33 and the mold portion 33 is slid rearward, the protruding portion 33f of the mold portion 33 is positioned on the flat portion 30f of the plug outer conductor 30. Become. Further, when the mold part 33 is slid forward, the protruding part 33 f of the mold part 33 is positioned on the engaging part 30 a of the plug outer conductor 30. Further, the thickness of the enlarged diameter portion 30b in the plug outer conductor 30 is about 0.2 mm so that sufficient elasticity can be obtained, but the thickness is preferably about 0.1 mm to about 0.3 mm. Is done.

Next, the structure of the mold part 33 is shown in FIG. 18 and FIG. 18A is a side view showing the configuration of the mold portion 33, FIG. 18B is a front view showing the configuration of the mold portion 33, and FIG. 19A is a rear view showing the configuration of the mold portion 13. FIG. 19B is a side view showing the structure of the mold part 33 in a cross-sectional view.
As shown in these drawings, the mold part 33 is made of a slightly hard synthetic resin such as vinyl chloride, polyethylene, AES, etc., and a front cylindrical part 33c having a large inner diameter is formed at the front part. An outer conductor holding portion 33a is formed at the rear portion of the cylindrical portion 33c, and a cable holding portion 33b having a reduced inner diameter is formed at the rear portion of the outer conductor holding portion 33a. The front cylindrical portion 33c is formed with an enlarged hole 33i having a large inner diameter, and four protrusions 33f are formed at intervals of about 90 ° on the inner peripheral surface of the enlarged hole 33i. The protruding portion 33f is positioned on the engaging portion 30a or the flat portion 30f formed on the plug outer conductor 30 when the mold portion 33 is slid with respect to the plug outer conductor 30. Further, the projecting portion 33 f serves to prevent the sliding of the slidable mold portion 33 with respect to the plug outer conductor 30.

The outer conductor holding portion 33a has a front side connected to the front cylindrical portion 33c and a rear side connected to the cable holding portion 33b. For this reason, an enlarged diameter hole 33i is formed in the front side inside the outer conductor holding portion 33a, and the diameter is reduced by a tapered hole formed in communication with the rear side of the enlarged diameter hole 33i. An outer conductor insertion hole 33h having a reduced diameter is formed in communication with the shaped hole. An enlarged diameter portion 30b (described later) of the plug external conductor 30 is slidably fitted into the enlarged diameter hole 33i of the front cylindrical portion 33c and the outer conductor holding portion 33a, and the outer conductor insertion hole 33h of the outer conductor holding portion 33a is slidably fitted. A reduced diameter portion 30c of the plug outer conductor 30 is slidably fitted therein.
The cable holding portion 33b is connected to the outer conductor holding portion 33a, and an outer conductor insertion hole 33h is formed therein, and the cable insertion hole 33g further reduced in diameter is connected to the outer conductor insertion hole 33h. Is formed. A plurality of ring-shaped protrusions are formed on the outside of the cable holding portion 33b so as to be easily gripped without sliding with a finger. The coaxial cable 14 led out from the reduced diameter portion 30c of the plug outer conductor 30 is slidably inserted into the cable insertion hole 33g.

Next, the configuration of the insulating support 31 is shown in FIGS. 20 and 21. FIG. 20A is a side view showing the configuration of the insulating support 31, and FIG. 20B is the configuration of the insulating support 31. FIG. 21A is a front view showing the configuration of the insulating support 31, and FIG. 21B is a rear view showing the configuration of the insulating support 31.
The insulating support 31 shown in these drawings is formed by molding a synthetic resin such as polypropylene, and has an enlarged portion 31a having a circular cross section and a large outer diameter, and a cylindrical fitting portion 31b having a small outer diameter. And an inclined portion 31c that smoothly connects the enlarged portion 31a and the fitting portion 31b having a small outer diameter, and a cylindrical insertion portion 31d that has a slightly smaller outer diameter than the fitting portion 31b. . A first insertion hole 31e is formed in the insertion part 31d formed on the rear side of the fitting part 31b, and the inner diameter of the first insertion hole 31e is substantially equal to the outer diameter of the inner insulator 14b of the coaxial cable 14. ing. A second insertion hole 31f having an inner diameter smaller than that of the first insertion hole 31e is formed from the fitting part 31b through the inclined part 31c to the enlarged part 31a. The inner diameter of the second insertion hole 31f is substantially equal to the outer diameter of the base 12b having the largest outer diameter of the plug pin 12, and the outlet of the second insertion hole 31f is formed in a tapered shape and gradually decreases in diameter toward the outlet. Is formed. A tapered slope connecting the pin portion 12a and the base portion 12b of the plug pin 12 fitted into the second insertion hole 31f from the first insertion hole 31e side is provided at the outlet of the tapered second insertion hole 31f. The base 12b is fitted into the second insertion hole 31f without coming into contact with the second insertion hole 31f.

The shape of the outer peripheral surface of the fitting portion 31b through the inclined portion 31c from the enlarged portion 31a is the inner peripheral surface from the back of the enlarged diameter portion 30b of the plug outer conductor 30 to the front portion of the reduced diameter portion 30c through the step portion 30d. It is almost equal to the shape. In addition, a ring groove 31g is formed on the front surface of the enlarged portion 31a so that the thickness around the second insertion hole 31f in the enlarged portion 31a is reduced to have elasticity. Furthermore, the step part 31h is formed in the ring shape in the outer peripheral surface of the enlarged part 31a, and the front side of the enlarged part 31a is one step lower.
The cylindrical insertion portion 31d is inserted between the braided wire 14c of the coaxial cable 14 and the internal insulator 14b, and the diameter of the braided wire 14c at the inserted portion is increased so as to follow the outer peripheral surface of the insertion portion 31d. Is done. The outer diameter of the braided wire 14 c into which the insertion portion 31 d is inserted is an outer diameter that is slightly larger than the inner diameter of the reduced diameter portion 30 c of the plug outer conductor 30.

  Returning to FIGS. 14 and 15, an insulating support 31 having a circular cross section made of synthetic resin is inserted into the through hole 30 e of the plug outer conductor 30. At this time, the step portion 31 h formed in the enlarged portion 31 a of the insulating support 31 is engaged with the inside of the locking step portion 30 g formed in the back of the enlarged diameter portion 30 b of the plug outer conductor 30. Become. As a result, the insulating support 31 does not come out of the enlarged diameter portion 30 b of the plug outer conductor 30. The insulating support 31 is disposed from the back of the enlarged diameter portion 30b to the front portion of the reduced diameter portion 30c via the stepped portion 30d, and the metal plug pin 12 supported by the insulating support 31 is provided with the enlarged diameter portion 30b. It is arrange | positioned on the center axis | shaft of this, and is set as the coaxial structure. An insertion portion 31d formed at the rear portion of the insulating support 31 is inserted between the braided wire 14c and the internal insulator 14b in the coaxial cable 14 to which the coaxial plug 3 is attached at one end. Thereby, the braided wire 14c of this part is expanded in diameter and comes into pressure contact with the inner peripheral surface of the reduced diameter portion 30c, so that both are electrically connected. The tip of the core wire 14 a is fixed to the base portion 12 b of the plug pin 12. The plug pin 12 is held by the insulating support 31 by fitting the rear portion of the plug pin 12 into a second insertion hole 31f formed substantially on the central axis of the insulating support 31. The plug outer conductor 30 is slidably fitted with a mold portion 33 from the rear side.

In the first state in which the mold part 33 slides rearward in the coaxial plug 3, as shown in FIG. 14, the four projecting parts 33 f formed in the front cylindrical part 33 c of the mold part 33. However, it comes to be located on the four flat parts 30f formed in the enlarged diameter part 30b of the plug outer conductor 30, and the engaging part 30a becomes a free state which can move up and down.
Here, when the mold part 33 is slid forward in the coaxial plug 3 in the first state, the front cylinder part 33c is formed in the front cylinder part 33c as the front cylinder part 33c of the mold part 33 moves forward. The protruding portion 33f that has been slid on the flat portion 30f formed on the enlarged diameter portion 30b is in a second state located on the engaging portion 30a. In this second state, as shown in FIG. 15, the engaging portion 30a formed one step lower (inward) in the enlarged diameter portion 30b is locked by being restricted from moving upward (outside). become.
The protrusion 33f formed on the inner peripheral surface of the front cylindrical portion 33c of the mold portion 33 is in contact with the flat portion 30f in the first state, and is in contact with the engaging portion 30a in the second state. Get in touch. As a result, the mold portion 33 can slide on the plug outer conductor 30, but the rotation of the mold portion 33 relative to the plug outer conductor 30 is prevented.

A mode in which the coaxial plug 3 according to the second embodiment of the present invention described above is mounted on the connector seat 2 is shown in FIGS. FIG. 22 is a side view showing the configuration of the first state in which the coaxial plug 3 of the second embodiment is mounted on the plug seat 2, and FIG. 23 is a side view showing the configuration of the coaxial plug 3 of the second embodiment. It is a side view which shows the structure of the 2nd state with which 2 was mounted | worn with sectional drawing.
Since the stopper seat 2 shown in these drawings is as described above, the description thereof is omitted. When the coaxial plug 3 according to the second embodiment provided at the tip of the coaxial cable 14 is attached to the plug seat 2, the coaxial plug 3 is a push-on coupling system. Insert it into seat 2. At this time, the shell 20 is inserted into the enlarged diameter portion 30b of the plug outer conductor 30 of the coaxial plug 3, and the shell 20 is elastic by the action of the engaging portion 30a and the flat portion 30f formed in the enlarged diameter portion 30b. Retained. A first state in which the coaxial plug 3 is inserted into the connector seat 2 is shown in FIG.

The user grasps the mold part 33 with a finger and inserts the coaxial plug 3 into the plug seat 2, but when the front surface of the shell 20 comes into contact with the front surface of the enlarged portion 31 a of the insulating support 31, the coaxial plug 3 is further removed. 3 cannot be inserted into the plug seat 2. Then, the mold part 33 held by the user's finger comes to slide forward, and the tapered hole formed in the mold part 33 comes into contact with the step part 30d of the plug external conductor 30. At that time, the sliding stops. This state is the second state shown in FIG. 23, and the protruding portion 33f formed on the front cylindrical portion 33c of the mold portion 33 is positioned on the engaging portion 30a. 23 is in a locked state because the concave and convex portions enter between the thread grooves formed on the outer peripheral surface of the shell 20 to be engaged, and in the state of FIG. 23, axial force (force in the pulling direction) is applied to the coaxial plug 3 Even if it is applied, the coaxial plug 3 does not easily come off the connector seat 2.
When removing the coaxial plug 3 from the connector seat 2, the user applies a force in a direction in which the user grasps the mold portion 33 with a finger and pulls it out. Thereby, the mold part 33 slides backward, and the coaxial plug 3 is in the first state shown in FIG. In this first state, a force is applied to the mold portion 33 in the pulling direction, so that the coaxial plug 3 is pulled out from the plug seat 2 and can be removed.

  The coaxial plug 3 according to the second embodiment of the present invention described above restricts (locks) the engagement portion 30a so that it cannot be moved freely or moved upward (outside) by sliding the mold portion 33 back and forth. ing. In the first state in which the engaging portion 30a is free, the coaxial plug 3 can be attached to or detached from the plug seat, and when the engaging portion 30a is restricted from moving upward (outside), The lower surface of the portion 30a is pressed against the outer peripheral surface of the plug seat, and the coaxial plug 3 is locked so as not to easily come out of the plug seat. In the coaxial plug 3 of the second embodiment, the plug outer conductor 30 also serves as an internal spring by forming the engaging portion 30a and the flat portion 30f on the plug outer conductor 30. That is, the coaxial plug 3 of the second embodiment can be elastically held and stably connected by the plug outer conductor 30 without using an internal spring. Moreover, since an internal spring is not required, the number of parts can be reduced, and an inexpensive coaxial plug 3 can be obtained.

The coaxial terminal according to the present invention described above is a push-on connection type coaxial terminal that is attached by being inserted into the coaxial connector, rather than being screwed into the coaxial connector seat. As described above, the coaxial terminal according to the present invention can be locked or free with respect to the attached spigot seat by sliding the mold part back and forth. Even if a force is applied to it, it will not come out easily. Further, the coaxial terminal according to the present invention has a structure in which an internal spring for elastically holding the outer peripheral surface of the coaxial connector seat to be mounted is omitted. For this reason, a structure that prevents the internal spring from falling off from the plug external conductor and the internal spring are not required, and thus a coaxial terminal that can be manufactured at low cost can be obtained.
The number of rectangular holes and flat portions formed in the plug outer conductor in the present invention described above is not limited to four, and at least two opposing faces may be formed, and three or five or more may be formed. Good. In this case, the lock pieces are formed in a number corresponding to the number of rectangular holes to be formed. The same applies to the engaging portions formed on the plug outer conductor, as long as at least two opposing portions are formed, and three or five or more may be formed. Further, the depth of the flat portion and the engaging portion is about 0.1 mm to about 0.5 mm, and the spring-like holding force can be adjusted by the material and the number of the plug outer conductors. In the coaxial terminal of the present invention, it is preferable that the coaxial cable is fixed by applying a caulking process to the reduced diameter portion of the plug external conductor after the coaxial cable is drawn out from the plug external conductor. In this case, the thickness of the reduced diameter portion of the plug outer conductor is preferably slightly larger than the thickness of the enlarged diameter portion so as to be about 0.25 mm to about 0.7 mm.

DESCRIPTION OF SYMBOLS 1 Coaxial plug, 2 Plug seat, 3 Coaxial plug, 10 Plug outer conductor, 10a Rectangular hole, 10b Expanded part, 10c Reduced diameter part, 10d Step part, 10e Through-hole, 10f Flat part, 11 Insulation support body, 11a Holding portion, 11b insertion portion, 11c inclined portion, 11d insertion portion, 11e lock piece, 11f serrated portion, 11g first insertion hole, 11h second insertion hole, 12 plug pin, 12a pin portion, 12b base portion, 12c tip portion, 13 Mold part, 13a External conductor holding part, 13b Cable holding part, 13c Front cylindrical part, 13d Rectangular window, 13e Rectangular groove, 13f Flat part, 13g Cable insertion hole, 13h External conductor insertion hole, 13i Diameter expansion hole, 14 Coaxial cable, 14a core wire, 14b inner insulator, 14c braided wire, 14d jacket, 20 shell, 21 center conductor 22 Insulating support portion, 30 plug outer conductor, 30a engaging portion, 30b expanded diameter portion, 30c reduced diameter portion, 30d stepped portion, 30e through hole, 30f flat portion, 30g locking stepped portion, 31 insulating support, 31a enlarged Part, 31b fitting part, 31c inclined part, 31d insertion part, 31e first insertion hole, 31f second insertion hole, 31g ring groove, 31h step part, 33 molding part, 33a outer conductor holding part, 33b cable holding part, 33c Front cylindrical part, 33f Projection part, 33g Cable insertion hole, 33h External conductor insertion hole, 33i Diameter expansion hole, 100 Coaxial plug, 111 Mold part, 112 Plug external conductor, 112c Lower conductor, 112d-shaped groove part, 112e Insertion hole , 113 Coaxial cable, 113a Core wire, 113b Internal insulator, 113c Sheath part, 113d Braided wire 114 insulating ring portion, 114a ring body, 114b through hole 115 plug pins, 116 inside the spring, 116a cutout, 116 b spring piece

Claims (4)

There is a coaxial terminal attached to the end of a coaxial cable,
It has a cylindrical shape, a large diameter enlarged portion is formed on the front side, a small diameter reduced portion through which the cable is inserted is formed on the rear side, and a plurality of holes are formed in the large diameter portion. A metal plug outer conductor,
A metal plug pin that is disposed substantially on the central axis of the diameter-enlarged portion of the plug outer conductor to form a coaxial structure with the diameter-enlarged portion, and is fixed to the end of the core wire of the cable;
A plurality of locking pieces formed by extending forward from the outer periphery of the holding portion disposed in the enlarged diameter portion of the plug outer conductor, the front portion facing the hole formed in the plug outer conductor; An insertion hole for holding a rear portion of the inserted plug pin; and an insertion portion formed at the rear portion and inserted between a braided wire of the cable and an internal insulator; An insulating support made of resin inserted into the front of the reduced diameter portion from the back of the enlarged diameter portion;
A diameter expansion hole is formed in the front first cylindrical portion so that the diameter expansion portion of the plug outer conductor is slidably inserted, and the diameter reduction portion of the plug outer conductor slides in the rear second cylinder portion. A first insertion hole that is movably inserted and a second insertion hole through which the cable is slidably inserted are formed so as to correspond to the position of the hole in the first cylindrical portion on the front side. And a resin mold part in which a plurality of windows are formed up to the diameter expansion hole,
When the mold part is slid rearward, the front part of the lock piece facing the hole comes to face the window, and when the mold part is slid forward, The upper surface of the lock piece facing the hole is moved downward in contact with the inner peripheral surface of the first cylindrical portion in the mold portion, and the lower surface of the lock piece is in the enlarged diameter portion of the plug outer conductor. Coaxial terminal characterized by becoming located.   A plurality of first flat portions are formed inwardly in the enlarged diameter portion of the plug outer conductor, and correspond to the arrangement position of the first flat portion in the front cylindrical portion of the mold portion. A plurality of second flat portions are formed on the inner peripheral surface of the enlarged-diameter hole, and the second flat portion is brought into contact with the first flat portion, so that the mold portion is outside the plug. 2. The coaxial terminal according to claim 1, wherein the coaxial terminal is prevented from rotating with respect to the conductor. There is a coaxial terminal attached to the end of a coaxial cable,
It has a cylindrical shape, a large-diameter enlarged portion is formed on the front side, and a reduced-diameter portion with a small diameter through which the cable is inserted is formed on the rear side. A metal plug outer conductor in which an engaging portion recessed in a concavo-convex shape is formed on the inside;
A metal plug pin that is disposed substantially on the central axis of the diameter-enlarged portion of the plug outer conductor to form a coaxial structure with the diameter-enlarged portion, and is fixed to the end of the core wire of the cable;
An insertion hole formed substantially along the central axis and holding the rear part of the inserted plug pin, and an insertion formed in the rear part and inserted between the braided wire of the cable and the internal insulator An insulating support made of resin that is inserted into the front portion of the reduced diameter portion from the back of the enlarged diameter portion of the plug outer conductor,
A diameter expansion hole is formed in the front first cylindrical portion so that the diameter expansion portion of the plug outer conductor is slidably inserted, and the diameter reduction portion of the plug outer conductor slides in the rear second cylinder portion. A first insertion hole that is movably inserted and a second insertion hole through which the cable is slidably inserted are formed to be connected to each other on the inner peripheral surface of the first cylindrical portion on the front side. A resin mold part in which a protrusion corresponding to the part is formed,
When the mold part is slid rearward, the position of the projecting part comes to be located behind the engaging part, and when the mold part is slid forward, the position of the projecting part is A coaxial terminal, wherein the coaxial terminal is positioned on the engaging portion.   A flat portion is formed on the rear side of the engaging portion formed in the enlarged diameter portion of the plug outer conductor by denting the enlarged diameter portion inward, and the mold portion is slid rearward. When moved, the position of the protruding portion is located on the flat portion, the mold portion is prevented from rotating with respect to the plug outer conductor, and when the mold portion is slid forward, 4. The coaxial terminal according to claim 3, wherein the protruding portion is positioned on the engaging portion, and the mold portion is prevented from rotating with respect to the plug outer conductor.

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