JP2003036946A - Structure of connection part of coaxial feeder line and coaxial elbow - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide structure of a connection part of a coaxial feeder line and a coaxial elbow, in which the coaxial elbow can be easily attached to or removed from the coaxial feeder line and excellent waterproof can be obtained. SOLUTION: In the connection part of the straight-line-like coaxial feeder line and the coaxial elbow, the inner conductor tip parts of the straight-line-like coaxial feeder line and the coaxial elbow have 1st connection elements respectively. A 2nd connection element, which is electrically connected to the 1st connection element of the inner conductor tip part of the coaxial elbow, and the 2nd connection element, which is connected to the 1st connection element of the inner conductor tip part of the straight-line-like coaxial feeder line, are electrically connected so that it can be separated. The inner conductor of the coaxial feeder line and the coaxial elbow can be connected and separated easily, and the outer conductor of the straight-line-like coaxial feeder line and the outer conductor of the coaxial elbow can be connected/ separated mechanically/electrically by a flange. Therefore, the coaxial elbow can be attached to or removed from the coaxial feeder line easily, and it is not necessary to divide the outer conductor of the coaxial elbow into two, then, it excels in waterproof and airtight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting a coaxial power feed line and a coaxial elbow for connecting a coaxial power feed line used for feeding high frequency and large power.

[0002]

2. Description of the Related Art A coaxial feed line used for feeding high-frequency and high-power power is coaxial with an inner conductor (for example, a copper pipe) of a cylindrical body via an insulating support member on an outer conductor (for example, a copper pipe) of the cylindrical body. It is used for supplying high frequency high power from a broadcasting transmitter to an antenna built outdoors, and supplying high frequency high power to an electron beam accelerator. In such a coaxial power supply line, the connection part of the coaxial power supply line may be damaged due to discharge or the like, so that it is necessary to inspect the connection part of the coaxial power supply line regularly or temporarily.

By the way, two coaxial feeder lines are connected to the elbow (el).
In the connection part of the coaxial elbow that is connected in a bow) shape, conventionally, the coaxial elbow is attached to one coaxial feed line, and the inner connector of the coaxial elbow with spring action is attached to the end of the cylindrical conductor of the other coaxial feed line. Plug in and connect.
However, the coaxial feed line used for feeding high-frequency high-power has a large diameter, for example, about 2 to 23 cm,
Since the weight is heavy, the wiring of the coaxial power supply line is generally fixed directly or indirectly to a wall or a ceiling of a building or the like in which a transmitter or the like is installed. Further, the coaxial power supply line is composed of a copper pipe or the like as described above, and is not flexible or stretchable.

Therefore, even if it is attempted to remove only the coaxial elbow portion from the coaxial feed line, the coaxial feed line cannot be moved. Therefore, the inner connector of the coaxial elbow is inserted into the cylindrical conductor of the other coaxial feed line. In the conventional connection part, the coaxial elbow cannot be removed from the coaxial power feed line, and therefore it is necessary to disassemble the coaxial elbow and the coaxial power feed line connecting the coaxial elbow every inspection.

For this reason, a coaxial elbow in which an outer conductor is divided into two in the axial direction has been proposed as a coaxial elbow capable of removing only the coaxial elbow portion (actually published 48-420).
No. 97).

[0006]

However, in the coaxial elbow in which the outer conductor is divided into two in the axial direction, the inner conductor and the outer conductor must be separated and assembled, and the site where the coaxial feed line is wired and fixed. In the above, in order to assemble or disassemble the connection portion between the coaxial power feed line and the coaxial elbow, skilled and sophisticated technology is required. Further, the coaxial elbow in which the outer conductor is divided into two in the axial direction has a structure in which the outer conductor is divided into two, and therefore is not excellent in waterproofness and airtightness and cannot be used outdoors.

The present invention has been made to solve the above problems, and the coaxial elbow can be easily attached to or detached from the coaxial feed line, and the coaxial feed line and the coaxial elbow are excellent in waterproofness and airtightness. It is intended to provide a connecting portion structure with.

[0008]

According to a first aspect of the present invention, there is provided a first outer conductor formed of a linear cylindrical body, and a first outer conductor coaxially supported inside the first outer conductor via an insulator. A straight coaxial power supply line having an inner conductor, a second outer conductor formed of two cylindrical bodies joined and integrated in an elbow shape, and coaxially with an insulator inside the second outer conductor. A connecting portion structure between a coaxial elbow and a coaxial elbow for connecting a coaxial elbow provided with a supported second inner conductor, the first portion being attached to an end portion of the first inner conductor of the coaxial feeder. A connector, a second connector attached to an end of the second inner conductor of the coaxial elbow, and both ends connected to the first connector and the second connector, respectively. A connection relay member for connecting the first and second connectors, and an end of the first outer conductor of the coaxial feeder. The provided projecting outward in 1
And a second flange provided on the end of the second outer conductor of the coaxial elbow so as to project outward, and the connection relay connected between the first and second connectors. The first inner conductor and the second inner conductor are connected to each other via a member, and the first flange portion and the second flange portion are butted against each other so that the first outer conductor and the second outer conductor are connected to each other.
There is provided a connecting portion structure for connecting a coaxial feeder and a coaxial elbow, which is formed by connecting the outer conductor of FIG.

In the structure for connecting the coaxial feed line and the coaxial elbow having the above structure, the inner conductor of the linear coaxial feed line and the inner conductor of the coaxial elbow are connected by a connection relay member to form a straight line. The connection between the inner conductor of the coaxial power feed line and the connection relay member is performed by the first connector attached to the end of the inner conductor of the linear coaxial power feed line, and the connection between the inner conductor of the coaxial elbow and the connection relay member. Is performed by a second connector attached to the end of the inner conductor of the coaxial elbow. Therefore, the inner conductor of the linear coaxial power feed line and the inner conductor of the coaxial elbow are connected / separably connected via the connection relay member.

In addition, the flange of the linear coaxial feeder line (first
And a flange (second flange) of the coaxial elbow are butted against each other and connected. Therefore, the outer conductor of the linear coaxial feed line and the outer conductor of the coaxial elbow are connected and detachably connected by their respective flanges. Thus, according to the first aspect, it is possible to easily connect / separate the linear coaxial feed line and the coaxial elbow.

According to claim 2, the connection relay member is
An insulative support member fitted to the inner peripheral surface of the abutting portion of the flange of the linear coaxial feed line and the flange of the coaxial elbow supports the linear coaxial feed line and the outer conductor of the coaxial elbow coaxially. A structure for connecting a coaxial feed line and a coaxial elbow is provided. Therefore, high-frequency power can be favorably fed between the linear coaxial feed line and the coaxial elbow.

According to a third aspect of the present invention, one of the connector at the inner conductor end of the linear coaxial feeder, the connector at the inner conductor end of the coaxial elbow, and the connection relay member connecting these connectors is coaxial. It has a bottomed cylindrical shape, and the other has an axial shape that fits inside the cylindrical body portion from each other in the axial direction. Therefore, by moving the connection relay member in the axial direction with respect to the connector of the inner conductor end of the linear coaxial feeder or / and the connector of the inner conductor end of the coaxial elbow, The inner conductor and the inner conductor of the coaxial elbow can be connected and separated.

According to a fourth aspect of the present invention, the connection relay member comprises third and fourth connectors coaxially joined to each other by joining members on both sides of the insulating support. Therefore, the inner conductor of the linear coaxial feed line and the inner conductor of the coaxial elbow can be connected and separated by joining or separating the third and fourth connectors to the insulating support. In Claim 5, the operation in which the joining member penetrates the through hole of the outer conductor of the coaxial elbow, the through hole of the inner conductor of the coaxial elbow, and the through hole of the second connector at the inner conductor end of the coaxial elbow, respectively. A structure for connecting a coaxial feed line and a coaxial elbow, which are joined and operated by means, is provided. Therefore, from the outside of the coaxial elbow,
By connecting / disconnecting the connector of No. 4 and the connector of No. 4 with the operating means, the connection / disconnection of the inner conductor of the linear coaxial feeder and the inner conductor of the coaxial elbow can be easily operated. ,
Combined with the fact that the flange of the linear coaxial power supply line and the flange of the coaxial elbow can be easily connected / separated, the connection / separation of the linear coaxial power supply line and the coaxial elbow can be easily performed.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A structure of a connecting portion between a coaxial feeder and a coaxial elbow according to the present invention will be described below with reference to the drawings. FIG. 1 is a partially sectional assembly view showing a structure of a coaxial elbow according to an embodiment of a connecting portion structure between a coaxial feeder and a coaxial elbow according to the present invention.

The coaxial elbow 1 has an L-shaped inner conductor 3 formed by connecting two cylindrical bodies at a right angle to an L-shaped outer conductor 2 formed by connecting two cylindrical bodies at a right angle. Inner conductor 3
Both ends of are supported by an insulating support plate 4, and the L-shaped inner conductor 3 and the L-shaped inner conductor 3 are coaxially arranged. Specifically, as shown in FIG. 1A, the L-shaped inner conductor 3 is inserted inside the L-shaped outer conductor 2. At this time, the L-shaped inner conductor 3 is inserted from the end portion of the L-shaped outer conductor 2 with the center line of each cylindrical body intersecting the center line of the L-shaped outer conductor 2 at an angle of approximately 45 degrees ( From the outside of the end of the L-shaped outer conductor 2 is inserted in the direction of arrow A in the figure). When the L-shaped inner conductor 3 is inserted up to the vicinity of the right angle portion of the L-shaped outer conductor 2, the L-shaped inner conductor 3 is rotated in the direction in which the center line of the L-shaped inner conductor 3 coincides with the center line of the L-shaped outer conductor 2 (see the same figure). As shown in the arrow B) and FIG. 1B, the L-shaped outer conductor 2 and the L-shaped inner conductor 3 are arranged coaxially.

From both ends of the L-shaped inner conductor 3,
Since the operation rod 100 described later is penetrated, the through hole 5 is L
It is provided at the center of the character-shaped inner conductor 3. This through hole 5
A window 6 for inserting the operating rod 100 is provided at a position (two locations) where the center line of the crosses the L-shaped outer conductor 2. Then, flanges 7 to be described later are provided at both ends of the L-shaped outer conductor 2.
Is provided.

FIG. 2 is a cross-sectional view showing the structure of the connecting portion on the coaxial elbow 1 side. The insulating support plate 4 coaxially supports the L-shaped inner conductor 3 with respect to the L-shaped outer conductor 2. It is sectional drawing of the flange 7 and the flange connection ring 10 mentioned later. Specifically, on the end surface of the L-shaped inner conductor 3,
A terminal plate 20 having the same diameter as the character-shaped inner conductor 3 and having a substantially disk shape is welded by, for example, brazing, and an outer connector 30 described later is attached to the terminal plate 20, and the terminal plate 20 and the outer connector 30 are attached.
Are supported by the insulating support plate 4. In this way
The L-shaped inner conductor 3 is coaxially supported and attached to the inside of the L-shaped outer conductor 2.

Further, on the flange surface 7a of the flange 7 formed over the entire circumference at both ends of the L-shaped outer conductor 2, an insulating support plate fitting insertion portion 8 for fitting an insulating support plate 70 described later is formed from the flange surface 7a. It is formed inward. The inner diameter of the insulating support plate fitting insertion portion 8 is slightly larger than the outer diameter of the insulating support plate 70, and the depth of the insulating support plate fitting insertion portion 8 (depth from the flange surface 7a of the flange 7). Is deeper than the thickness of the insulating support plate 70, and the insulating support plate 70 fitted into the insulating support plate fitting portion 8 is slidable in the axial direction. A flange 9 is further formed on the outer peripheral surface of the flange 7. The flange surface 9a of the flange 9 is retracted from the flange surface 7a by a distance that is slightly shorter than ½ of the thickness of the packing 80 described later from the flange surface 7a. The flange surface 9a holds the packing 80 together with the packing insertion groove 69 of the flange 67 described later.

The flange connecting ring 10 has a bottomed cylinder whose height is approximately twice the thickness of the flange 9, and the inner diameter of the bottomed cylindrical inner surface 10a is slightly larger than the outer diameter of the flange 9. The flange 9 is adapted to be loosely inserted into the peripheral surface 10a of the bottomed cylindrical body, and the depth to the bottom surface 10a of the bottomed cylindrical body is slightly deeper than the thickness of the flange 9 and Is a through hole 10c having an inner diameter through which the flange 7 freely penetrates.
Has been drilled. Further, the flange connecting ring 10 is provided with bolt through holes 12 at two centrally symmetrical positions facing a bolt through hole 64 of a flange 67 described later. Before attaching the flanges 7 to both ends of the coaxial elbow 1 (by fusion bonding or the like), the L-shaped outer conductor 2 is loosely inserted into the through hole 10c of the flange connecting ring 10.

FIG. 3 shows the coaxial elbow 1 side,
Terminal plate 20 and insulating support plate 4 fused to the L-shaped inner conductor 3
3 is an exploded sectional view showing the structure of the outer connector 30. FIG. The L-shaped inner conductor 3 is formed of a cylindrical body, the end plate 20 is fused to the end of the cylindrical body 3, and the through hole 5 is formed inside the cylindrical body 3. In addition,
In a portion where the two cylindrical bodies are orthogonal to the L-shape, the cylindrical body 3 has an elliptical cross section having an angle of 45 degrees with respect to the center line, and the through hole 5 is formed at the center of the elliptical surface. Has been formed.

A circumferential portion 21 fitted into the fitting hole 4a of the insulating support plate 4 projects from the end surface 20a of the terminal plate 20 on the side supported by the insulating support plate 4. The outer diameter of the circumferential portion 21 is slightly smaller than the inner diameter of the fitting hole 4a, and the height of the circumferential portion 21 is slightly lower than half the thickness of the insulating support plate 4. A positioning ring 4b, which will be described later, is provided inside the end of the circumferential portion 21.
Is provided with a positioning ring insertion hole 22. The inner diameter of the positioning ring insertion hole 22 is slightly larger than the outer diameter of the positioning ring 4b, and the depth thereof is slightly shallower than 1/2 of the thickness of the positioning ring 4b. The bottom surface 23 on the inner peripheral side of the positioning ring insertion hole 22 is located closer to the end of the L-shaped inner conductor 3 than the end surface 20a, and is connected to the through hole 5 of the L-shaped inner conductor 3 at the center thereof. A through hole 24 is formed, and a plurality of screw holes 25 arranged at equal intervals on the circumference are formed in the peripheral portion of the through hole 24.

An outer connector 30 mounted on the terminal plate 20 and supported by the insulating support plate 4 together with the terminal plate 20.
Has a bottomed cylindrical body, and the outer diameter of the bottomed cylindrical body is preferably the same as the outer diameter of the L-shaped inner conductor 3. An inner connector 40 described later is slidably connected to the peripheral surface of the bottomed cylindrical body. The outer surface of the bottomed cylindrical body of the outer connector 30 has an outer diameter and an inner diameter that are the same as those of the circumferential portion 21 at a position facing the circumferential portion 21 of the terminal plate 20, and has the same height. A circumferential portion 31 having is projected. In the circumferential portion 31,
A positioning ring insertion hole 32 having the same inner diameter and depth as the positioning ring insertion hole 22 is provided at a position facing the positioning ring insertion hole 22 of the terminal plate 20. In addition, the outer connector 30 has a through hole 34 formed in the through hole 24.
And a screw hole 35 is provided so as to face the screw hole 25.

As described above, the insulating support plate 4 is press-fitted from both ends of the L-shaped outer conductor 2, and the circumferential portion 21 of the terminal plate 20 is fitted into the fitting hole 4a of the insulating support plate 4 as shown in FIG. Fit in. At this time, the press-fitting position of the insulating support plate 4 in the axial direction is such that, with the outer connector 30 mounted on the terminal plate 20, the inner connector 40 and the bolt 50 are screwed together as described later to connect the outer connector 30 to the outer connection. The inner connector 40 and the bolt are positioned so as not to project from the flange surface 7 a of the coaxial elbow 1 when the inner connector 40 is inserted deepest into the connector 30.

After the L-shaped inner conductor 3 is mounted on the L-shaped outer conductor 2 as described above, the outer connector 30 is attached to the terminal plates 20 brazed to both ends of the L-shaped inner conductor 3 by the bolts 3.
Attached and joined by 6. This mounting / joining is performed by positioning ring insertion holes 22 in the circumferential portion 21 of the terminal plate 20 and positioning ring insertion holes 32 in the circumferential portion 31 of the outer connector 30.
It is performed after inserting the positioning ring 4b made of a conductive member into the. Since the thickness of the positioning ring 4b is slightly thinner than twice the depth of the positioning ring insertion hole 22, when it is inserted into the positioning ring insertion hole 22, about 1/2 of the thickness thereof projects. The protruding positioning ring 4b is used as a positioning ring insertion hole 32 for the outer connector 30.
The outer connector 30 and the L-shaped inner conductor 3 are aligned by inserting the outer connector 30 into the outer connector 30 so that the outer connector 30 is aligned with the outer connector 30.
And will be located coaxially.

Thereafter, the bolt 36 is attached to the outer connector 30.
By screwing into the screw hole 25 of the terminal plate 20 through the screw hole 35 of the L-shaped inner conductor 3 and the outer connector 30.
Are mechanically and electrically mounted and connected via the terminal board 20. The detent 37 is for preventing rotation of the inner connector 40 described later. By performing the above work on both ends of the coaxial elbow 1, the assembly of the coaxial elbow 1 side is completed.

As shown in FIG. 1, the window 6 has a hole 6a provided in the L-shaped outer conductor 2, a cylinder 6b arranged outside the hole 6a, and an end portion of the cylinder 6b. A disc 6d that closely adheres to the flange 6c formed on the side wall and seals the window hole;
4 bolts 6e for joining d to the flange 6c (see FIG.
Has two of the four bolts 6e) and a packing 6f inserted between the end face of the flange 6c and the disc 6d. The hole 6a and the cylinder 6b are the operating rod 100.
Have an inner diameter that allows free passage, and are continuous. The operating rod 100 can be inserted into the coaxial elbow 1 by removing the disc 6d from the flange 6c. The window 6 is waterproofed by closely contacting and joining the disk 6d with the packing 6f to the end surface of the flange 6c with the bolt 6e.

Next, the structure of the inner connector 40 will be described. The inner connectors having the same shape are the outer connectors 30 at both ends of the L-shaped inner conductor 3 and the outer connectors 3 at the ends of the linear inner conductors 63 of the linear coaxial feed line 61.
0 and 0 respectively. The inner connector 40 shown in FIG. 4 has a bottomed cylindrical body, and after a bolt 50 described later is screwed into a screw hole 41 formed at the center of the bottomed cylindrical body, the outer connector 30 is attached to the inner connector 40. It is slid and inserted to electrically connect to the outer connector 30.

Here, the outer periphery of the cylindrical body portion of the inner connector 40 has a first outer peripheral surface 42a and a second outer peripheral surface 42b. The outer diameter of the first outer peripheral surface 42a is preferably the same as the outer diameter of the cylindrical body portion of the outer connector 30, and the second outer peripheral surface 42b has an outer diameter slightly smaller than the inner diameter of the outer connector 30 cylindrical portion. Have A plurality of slits 42c are axially formed on the outer peripheral surface 42b of the cylindrical body portion of the inner connector 40, and irregularities are spirally formed on the outer peripheral surface of the cylindrical body portion. A conductor 43 is wound around. The conductor 43 has, for example, a substantially semicircular cross section and an outer peripheral surface having a substantially semicircular shape. Then, when the inner connector 40 is inserted into the inner peripheral surface of the cylindrical body portion of the outer connector 30, the inner connector 40 is spring-loaded by the diameter of the cylindrical body portion of the inner connector 40 being reduced by the action of the slit 42c. 40 and outer connector 30
The electrical connection with is secured.

A circumferential portion 45 projects from the outer surface 44 of the bottomed cylindrical body of the inner connector 40. The outer diameter of the circumferential portion 45 is slightly smaller than the inner diameter of a later-described fitting hole 70b of the insulating support plate 70, and the circumferential portion 45 is fitted into the fitting hole 70b. The inner diameter of the circumferential portion 45 is slightly larger than the outer diameter of the circumferential portion 71a of the positioning ring 71 described later, and the inner circumferential surface 45a of the circumferential portion 45 has the circumferential portion 71a of the positioning ring 71. Is inserted. The height of the circumferential portion 45 is slightly higher than the height of the circumferential portion 71a.

A male screw is formed on the tip 51 of the bolt 50, a head 53 is formed on the side facing the tip 51, and a regular hexagonal recess 54 is formed on the end face 53a of the head 53. ing. A screw hole 55 is formed in the center of the recess 54, and the operating rod 100 is inserted into the screw hole 55.
The male screw 102a formed at the tip of the operation rod 102 is screwed. An intermediate portion 52 having no male screw is formed between the tip portion 51 and the head portion 53 with a diameter slightly smaller than that of the tip portion 51. A C ring 56 is attached to the intermediate portion 52.

The tip portion 51 of the bolt 50 is screwed into the screw hole 41 of the inner connector 40, and the bolt 50 is screwed in until the tip portion 51 passes through the screw hole 41. In this way, the bolt 50 and the inner connector 40 are screwed together. In the screwed state,
The inner connector 40 is connected to the outer connectors 30 at both ends of the L-shaped inner conductor 3. In this connection, the upper end of the cylindrical body portion of the outer connector 30 is the outer peripheral surface 42 of the inner connector 40.
The inner connector 40 is inserted into the outer connector 30 until it comes into contact with the boundary between the a and the outer peripheral surface 42b.

FIG. 5 is a sectional view of the structure of the connecting portion on the side of the linear coaxial feeder line 61. The connecting portion structure on the side of the linear coaxial feed line 61 is configured such that the linear inner conductor 63 is coaxially supported by the insulating support plate 4 with respect to the linear outer conductor 62. Specifically, the terminal plate 20 is welded to the end of the linear inner conductor 63, the outer connector 30 is connected to the terminal plate 20, and the linear inner conductor 63 is supported by the insulating support plate 4. There is.
The linear outer conductor 62 has the same inner diameter as the L-shaped outer conductor 2, and the linear inner conductor 63 is a cylindrical body having the same outer diameter as the cylindrical body 3 of the L-shaped inner conductor 3. With regard to the structure of this connecting portion, the same reference numerals are given to the constituent elements having the same structure and function as the end portion of the coaxial elbow 1, and the description thereof will be omitted.

A flange 67 is formed at the end of the linear coaxial feeder line 61 side. Flange surface 6 of flange 67
An insulating support plate fitting insertion portion 68 is formed at a position of the flange 7 facing the insulating support plate fitting insertion portion 8 and has the same inner diameter and depth as the insulating support plate fitting insertion portion 8. . The outer diameter of the flange 67 is larger than the outer diameter of the flange 7, a substantially concave packing insertion groove 69 is formed in the outer periphery in the vicinity of the insulating support plate fitting insertion portion 68, and a center is formed outside the packing insertion groove 69. Bolt through holes 64 are provided at two symmetrical positions. Here, the packing insertion groove 69 is formed at a position facing the flange 9,
Along with the packing 80 is sandwiched. Packing insertion groove 6
The width of 9 is slightly wider than the width of the packing 80, and the depth of the groove is slightly shallower than 1/2 of the thickness of the packing 80.

FIG. 6 shows a coaxial elbow 1 and a linear coaxial feeder line 6.
FIG. 3 is an exploded cross-sectional view of the structure of the connecting portion with 1. An insulating support plate 70 fitted between the flange 7 and the flange 67 in a state where the coaxial elbow 1 and the linear coaxial feed line 61 are connected.
Via the positioning ring 71, its two end faces 7
Two inner connectors 40 are joined to 0a. Here, the insulating support plate 70 is a disk-shaped insulating support plate, the outer diameter of which is slightly smaller than the diameter of the inner peripheral surfaces of the insulating support plate fitting portions 68 and 8, and the central portion of the insulating support plate 70 is A fitting hole 70b into which the circumferential portion 45 of the inner connector 40 is fitted is formed. The insulating support plate 70 is provided with a plurality of holes 70c in order to improve air flowability inside the coaxial feeder.

The positioning ring 71 which defines the mounting positions of the two inner connectors 40 is made of a conductive member. The outer diameter of the positioning ring 71 is equal to the fitting hole 70 of the insulating support plate 70.
The positioning ring 71 has a diameter slightly smaller than the inner diameter of b and is fitted into the fitting hole 70b. Positioning ring 71
Since a circumferential portion 71a is formed at both ends of the inner circumferential surface of the inner connector 40, the outer diameter of the circumferential portion 71a is equal to that of the circumferential portion 45a. The diameter is slightly smaller than the inner diameter, and the height of the circumferential portion 71a is 4
Slightly below the height of 5.

First, the inner connector 40 is slid and connected to the outer connector 30 mounted on the linear inner conductor 63 of the linear coaxial feeder line 61. Next, for example, a rubber packing 80 having elasticity is attached to the packing insertion groove 69 of the flange 67, and the insulating support plate 70 is attached to the flange 6.
7 into the insulating support plate fitting insertion portion 68. At this time, the inner connector 40 is inserted into the fitting hole 70b of the insulating support plate 70.
Next, the positioning ring 71 is fitted in the fitting hole 70b so that the circumferential portion 45 of the fitting hole is fitted. At this time, the circumferential portion 71 a of the positioning ring 71 is inserted into the circumferential portion 45 of the inner connector 40.

Then, the end surface 70a of the insulating support plate 70 is
The end surface of the circumferential portion 71a of the positioning ring 71 is the same as the flange surface 67a of the flange 7, and the flange surface 6a
From 7a, the packing 80 is only slightly exposed to the outside. The above work is performed for the two linear coaxial feeders 61 connected to both ends of the coaxial elbow 1.

On the other hand, in the coaxial elbow 1, as described above, the inner connector 40 screwed with the bolt 50 is connected to the outer connectors 30 at both ends of the L-shaped inner conductor 3. In such a state, the linear coaxial feeder line 61
And the coaxial elbow 1 are connected. Here, FIG. 7 is a partial cross-sectional view of the connecting portion structure between the coaxial elbow 1 and the linear coaxial feed line 61.

The connection between the coaxial elbow 1 and the linear coaxial feed line 61 is performed by using the flange connecting ring 10 after the flange 7 and the flange 67 are brought into contact with each other. As described above, the flange 7 is attached to the end of the linear coaxial feeder line 61.
Since the packing 80 only slightly protrudes from the surface of the above, if the coaxial elbow 1 is pressed against the elasticity of the packing 80, the flange 7 of the linear coaxial feed line 61 and the flange 67 of the coaxial elbow 1 can be easily contacted with each other. You can touch.

After abutting both flanges in this manner, the flange connecting ring 10 is abutted on the flange 9. Then, the bolt through hole 64 of the flange 67 and the bolt through hole 12 of the flange connecting ring 10 are opposed to each other, and the bolt 110
The flange 67 and the flange connecting ring 10 are connected by the nut 111. At this time, the connection between the two is still in a loose state.

In the above state, first, the linear coaxial feeder line 6
1 straight inner conductor 63 and coaxial elbow 1 L-shaped inner conductor 3
Make a connection with. This connection is made by the linear inner conductor 6 supported by the insulating support plate 70 and positioned by the positioning ring 71.
Inner connector 40 mounted on 3 side and coaxial elbow 1
The inner connector 40 mounted on the L-shaped inner conductor 3 side is joined to each other with bolts 50.

This joint is made up of the window 6 provided on the L-shaped outer conductor 2.
The operation rod 100 is inserted from the above to operate the operation rod 100. As shown in FIG. 8, the operating rod 100 includes a sheath 101 and an operating rod 102 that penetrates the inside of the sheath 101 and is rotatably / removably operated. The distal end portion 101a of the sheath 101 is a bolt. Hexagonal recess 5 of head 53 of 50
It has a hexagonal shape so that the bolt 50 can be rotated by being fitted into No. 4. Further, a male screw 102 a that is screwed into the screw hole 55 of the bolt 50 is formed at the tip of the operation rod 102.

As described above, the operating rod 100 is inserted into the coaxial elbow 1 through the window 6. At this time, the male screw 102a at the tip of the operating rod 102 is immersed inside the sheath 101. The operating rod 100 is provided in the L-shaped inner conductor 3 of the coaxial elbow 1, the through hole 5, the terminal plate 20.
Through the through hole 24 provided in the outer connector 30 and the through hole 34 provided in the outer connector 30, and the sheath 1 is inserted into the hexagonal recess 54 of the bolt 50.
The tip 101a of No. 01 is inserted. At this time, bolt 5
As described above, 0 is screwed into the inner connector 40 on the coaxial elbow 1 side. By further pushing in the sheath 101, the inner connector 40 on the coaxial elbow 1 side is pushed and moved to the side of the linear coaxial feeder line 61, and is moved to the inner peripheral surface 45a of the circumferential portion 45 of the inner connector 40. The circumferential portion 71a of the positioning ring 71 is inserted, and the linear coaxial feeder line 6 is inserted.
The inner connector 40 on the first side can be joined.

Further, while pushing the sheath 101, the operating rod 102 is projected from the tip portion 101a of the sheath 101, and the male screw 102a at the tip portion of the operating rod 102 is screwed into the screw hole 55 of the bolt 50. 102 is rotated.
After the male screw 102a and the screw hole 55 are screwed together, the operating rod 102 is further rotated to push in the sheath 101, and eventually,
The tip portion 51 of the bolt 50 passes through the screw hole 41 of the inner connector on the coaxial elbow 1 side, and the middle portion of the bolt 52 has a smaller diameter than the tip portion 51.
Touches the inner surface of the bottomed cylindrical body of the inner connector 40 on the coaxial elbow 1 side. Further, when the bolt 50 is pushed in with the operation rod 102 and screwed in, the female screw of the tip end portion 51 is screwed into the screw hole 41 of the inner connector 40 on the side of the linear coaxial feeder line 61. In addition, the operating rod 102
When is screwed in, the inner connector 40 on the side of the coaxial elbow 1 and the inner connector 40 on the side of the linear coaxial feed line 61 abut on the positioning ring 71 and are also electrically connected by the positioning ring 71.

There is a risk that the inner connectors 40 will rotate due to the rotation of the bolt 50. As described above, the rotation stopper 37 is provided to prevent the inner connectors 40 from rotating, and the bolts 50 connect both inner connectors. The child 40 is surely joined. Here, the detent 37 is screwed into a screw hole formed in the bottom of the bottomed cylindrical body of the outer connector 30, and the detent 37 and the outer connector 3
The inner end of the inner connector 40 and the inward flange 42d provided over the entire inner surface of the inner connector 40 are sandwiched between the inner connector 40 and the inner surface of the inner connector 40, and the inner connector 40 is prevented from rotating. It

After performing the above-described connecting work at both ends of the coaxial elbow 1, the flange 7 on the side of the linear coaxial feed line 61, the flange 67 on the side of the coaxial elbow 1, and the flange connecting ring 1
0 is connected with the bolt 110 and the nut 111 to connect the linear coaxial power supply line 61 and the coaxial elbow 1, and the packing 80 is provided with the flange 7 and the flange 6.
The waterproof function and airtightness of the connecting part with 7. Then, by closing the window 6 as described above, the waterproofness and airtightness of the window 6 are secured.

Thus, the inner connector 40 on the coaxial elbow 1 side and the inner connector 40 on the linear coaxial feeder line 61 side.
By joining and, the L-shaped inner conductor 3 of the coaxial elbow 1 and the linear inner conductor 63 of the linear coaxial feed line 61 are electrically and mechanically connected, and the L-shaped outer conductor 2 of the coaxial elbow 1 is connected. By connecting the linear outer conductor 62 of the linear coaxial feeder line 61 to the flange, both outer conductors are electrically / mechanically connected / coupled. The inner connector 40 on the coaxial elbow 1 side and the inner connector 40 on the linear coaxial feeder line 61 side are coaxially supported by the insulating support plate 70, so that high-frequency large power is satisfactorily supplied and transmitted. It Moreover, the connection part and the window are excellent in waterproof effect and airtightness.

When the coaxial elbow 1 is removed from the linear coaxial feed line 61, the removal work is performed in the reverse order of the above-mentioned assembly work. That is, the operating rod 100 is inserted through the window 6, and the bolt 50 is removed from the inner connector 40 on the side of the linear coaxial power feeding line 61 by the operation, and the two inner connectors 40 are disconnected from each other. After that, by separating the flanges 7, 67 and the flange connecting ring 10, the coaxial elbow 1 and the linear coaxial feeder line 61 are separated.

First, the tip portion 1 of the sheath 101 of the operating rod 100.
01a is fitted into the hexagonal recess 54 of the bolt 50,
The male screw 102a formed at the tip of the operating rod 102 is screwed into the screw hole 55. After performing this screwing, the sheath 101 is rotated in the direction in which the bolt 50 is pulled out. At this time, the operation rod 100 is used to connect the inner connector 40 to the linear coaxial feeder line 6.
Remove the bolt 50 while pushing it to the 1 side. In this way, the tip portion 51 of the bolt 50 is pulled out from the inner connector 40 on the side of the linear coaxial feeder line 61. When the tip portion 51 of the bolt 50 is pulled out in this way, the tip portion 51 is not yet screwed into the screw hole 41 of the inner connector 40 on the coaxial elbow 1 side.

In this way, when the operation rod 102 is pulled out after the bolt 50 is pulled out from the inner connector 40 on the side of the linear coaxial power feed line 61, the male screw 1 at the tip of the operation rod 102 is pulled out.
02a is screwed into the screw hole 55 of the bolt 50,
The male screw of the tip portion 51 of the bolt 50 contacts the screw hole 41 of the inner connector 40 on the coaxial elbow 1 side. Then, by rotating the operating rod 102 in the direction of pulling out the bolt 50, the bolt 50 is screwed onto the inner connector 40 on the coaxial elbow 1 side. After this screwing, when the operating rod 100 is pulled out, the inner connector 40 on the coaxial elbow 1 side is pulled toward the coaxial elbow 1 side, separated from the insulating support plate 70 and the positioning ring 71, and the inner connector 40 of the inner connector 40 is removed. The circumference 45 of the lower surface of the cylinder is closer to the inner conductor on the coaxial elbow 1 side than the position of the flange surface 7a of the flange 7 of the coaxial elbow 1. After that, the male screw 1 at the tip of the operating rod 102
02a is pulled out from the screw hole 55 of the bolt 50,
Pull out the operating rod 100 from the coaxial elbow 1.

By performing this work on the inner connectors at both ends of the coaxial elbow 1, the inner conductors at both ends of the coaxial elbow 1 and the inner conductor of the linear coaxial feed line 61 are electrically and mechanically separated from each other. It Next, at both ends of the coaxial elbow 1, the bolt 110 and the nut 111 of the flange connecting ring 10 connecting the flange 7 of the linear coaxial feed line 61 and the flange 67 of the coaxial elbow 1 are removed to remove the linear shape. The flange 7 of the coaxial feed line 61 and the flange 67 of the coaxial elbow 1 are separated.

Thus, the coaxial elbow 1 can be separated from the straight coaxial feed line 61. The connection structure between the coaxial feeder and the coaxial elbow according to the present invention is not limited to the case where the linear coaxial feeder is connected at a right angle,
It is widely applicable to the connection of two intersecting coaxial feeder lines.

[0053]

As described above, according to the connecting portion structure of the coaxial feeder and the coaxial elbow of the present invention, the coaxial elbow for connecting the linear coaxial feeder and the linear coaxial feeder can be easily connected. -Because it can be separated, the connection between the coaxial elbow and the linear coaxial feeder can be easily inspected, and even if the connection is damaged due to discharge, etc., the coaxial elbow and the linear coaxial Since the connection part with the power supply line can be easily separated, the effect of being able to perform repairs etc. quickly is exhibited, and it is not necessary to divide the outer conductor of the coaxial elbow into two parts, and the flange part and the window part are packed. Since it is excellent in waterproofness and airtightness, it can be used outdoors.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional assembly view showing the structure of a coaxial elbow according to an embodiment of a structure for connecting a coaxial feeder and a coaxial elbow according to the present invention.

FIG. 2 is a cross-sectional view showing a structure of a connecting portion on a coaxial elbow side in an embodiment of a connecting portion structure between a coaxial feeder and a coaxial elbow according to the present invention.

FIG. 3 is an exploded cross-sectional view showing structures of a terminal plate, an insulating support plate and an outer connector at an end portion of the L-shaped inner conductor of FIG.

FIG. 4 is a cross-sectional view showing a structure of an inner connector connected to an outer connector at an end portion of an inner conductor of a coaxial feeder and a coaxial elbow.

5 is a cross-sectional view of a connecting portion structure on the side of a linear coaxial power supply line connected to the coaxial elbow shown in FIG.

FIG. 6 is an exploded cross-sectional view of the structure of the connecting portion between the coaxial elbow and the coaxial feeder in the embodiment of the structure of the connecting portion between the coaxial feeder and the coaxial elbow according to the present invention.

FIG. 7 is a partial cross-sectional view of the connecting portion structure between the coaxial elbow and the linear coaxial feeding line in the embodiment of the connecting portion structure between the coaxial feeding line and the coaxial elbow according to the present invention.

8 is a schematic configuration diagram of a main part of an operating rod for operating the bolt (connecting means) of FIG.

[Explanation of symbols]

1 coaxial elbow 2 L-shaped outer conductor 3 L-shaped inner conductor 4 Insulation support plate 5 L-shaped inner conductor through hole 6 Coaxial elbow window 7 flange 20 terminal board 24 Through hole of terminal board 30 Outer connector 40 Inner connector 61 Linear coaxial feeder 62 straight outer conductor 63 Straight inner conductor 67 Flange 70 Insulation support plate 71 Positioning ring 100 operation rod

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Minoru Kawaguchi             2-6-1, Marunouchi, Chiyoda-ku, Tokyo             Kawa Electric Industry Co., Ltd. (72) Inventor, Kubota Chika             2-3-8 Sakura, Tsukuba-shi, Ibaraki (72) Inventor Hiroshi Nakanishi             3-12-14 Hanabata, Tsukuba City, Ibaraki Prefecture

Claims (5)

[Claims] 1. A first outer conductor comprising a linear cylindrical body,
And a linear coaxial feed line having a first inner conductor coaxially supported via an insulator inside the first outer conductor, and two cylindrical bodies joined and integrated in an elbow shape. Second
And a coaxial elbow having a second inner conductor coaxially supported via an insulator inside the second outer conductor for connecting the coaxial feed line and the coaxial elbow. And a first connector attached to the end of the first inner conductor of the coaxial feed line, and a second connector attached to the end of the second inner conductor of the coaxial elbow. A connection relay member having both ends connected to the first connector and the second connector to connect between the first and second connectors, and the first outer conductor of the coaxial feeder. A first flange provided on an end portion of the coaxial elbow so as to project outward, and a second flange provided on an end portion of the second outer conductor of the coaxial elbow protruding to the outside, the first and The first inner conductor and the second inner conductor are connected via the connection relay member connected between the second connectors. And a coaxial feed line, characterized in that the first outer conductor and the second outer conductor are connected to each other by connecting the first outer flange and the second outer flange to each other. Coaxial elbow connection structure. 2. The connection relay member includes the first and / or second insulating support member fitted to an inner peripheral surface of an abutting portion of the first flange portion and the second flange portion.
2. The structure for connecting the coaxial feeder and the coaxial elbow according to claim 1, wherein the connecting part is coaxially supported by the outer conductor. 3. The first and second connectors, and one of the connection relay members for connecting both ends of the first and second connectors to one another of the first and second inner conductors. 2. A cylindrical shape having a bottom and a coaxial shape, and the other shape having an axial shape that fits inside thereof from the axial direction.
The structure of the connection between the coaxial feeder and the coaxial elbow described in. 4. The coaxial feed line and the coaxial elbow according to claim 1, wherein the connection relay member includes third and fourth connectors coaxially joined to each other from both sides of the insulating support member by a joining member. Connection structure. 5. The joining member includes a through hole of the second outer conductor, a through hole of the second inner conductor, and a through hole of a second connector attached to an end portion of the second inner conductor. The connecting portion structure between the coaxial feeder and the coaxial elbow according to claims 1 to 4, which is joined by operating means penetrating the holes.