JP6812837B2 - Directional coupler and fixed structure - Google Patents

Description

The present invention relates to a directional coupler and a fixed structure, and more particularly to a directional coupler and a fixed structure fixed to a cylindrical coaxial tube feeder.

In a transmitter or the like installed in a broadcasting station, a cylindrical coaxial tube feeder is used as a main line portion, and a directional coupler of a type fixed to the outer conductor of the coaxial tube feeder is used. This type of directional coupler is disclosed, for example, in Patent Document 1.

The directional coupler disclosed in Patent Document 1 includes a feeder mount mounted on the outer conductor of the feeder, an inner conductor mount mounted on the feeder mount, and an inner conductor mounted on the inner conductor mount. The feeder mount includes a fixing portion fixed to the outer conductor of the feeder and a joint portion on which the inner conductor mount is placed. The joint is formed in a cylindrical shape, one main surface is fixed to the fixed portion, and the other main surface is provided with a pair of studs arranged to face each other on the same diameter of the joint. The inner conductor mount includes a rotating portion that is mounted on the joint portion and a mounting portion on which the inner conductor is mounted. The rotating portion is formed in a cylindrical shape, has a pair of through holes movably fitted to the stud on one main surface, and has a mounting portion arranged therein. The mounting portion is formed in a cylindrical shape having an outer diameter slightly smaller than the outer diameter of the rotating portion, and two slits and a slit are formed in the length direction. The inner conductor is formed in a columnar shape having a diameter slightly smaller than the inner diameter of the mounting portion, and is provided with a coupling loop inside and two guides formed so as to be slidably fitted with a slit on the side surface. The mounting portion and the inner conductor are fixed by tightening a band on the side surface of the mounting portion on which the slit is formed. When adjusting the position of the inner conductor, the user loosens the band, moves the inner conductor with the slit and the guide fitted, and tightens the band again at the desired position. When adjusting the orientation of the inner conductor, the user loosens the nut, rotates the inner conductor mount with the stud penetrating the through hole, and tightens the nut again in the desired position.

Japanese Unexamined Patent Publication No. 2000-49510

In the structure of Patent Document 1 described above, when adjusting the position of the inner conductor in the vertical direction, the ease of movement of the inner conductor in the vertical direction differs depending on the degree of loosening the band, and it is difficult to make fine adjustments. .. With the configuration of Patent Document 1, it cannot be said that the operability and workability at the time of adjusting the electrical characteristics of the directional coupler are good.

The present invention solves the above-mentioned problems, and is a directional coupler fixed to a cylindrical coaxial tube feeder, which has good operability and workability in adjusting electrical characteristics. Its main purpose is to provide a fixed structure.

The directional coupler according to one side surface of the present invention has an inner conductor having a cylindrical outer peripheral surface, an inner conductor fixing portion fixed to the outer conductor of the coaxial tube feeder, and the inner conductor fixing into which the inner conductor is inserted. It has a band that tightens the outer periphery of the portion to fix the inner conductor, and a spacer that has a cylindrical shape, the inner conductor is inserted and inserted into the inner conductor fixing portion, and has a flange structure and a screw structure.

The fixing structure according to the other side surface of the present invention includes an inner conductor fixing portion fixed to the outer conductor of the coaxial tube feeder and the inner conductor fixing portion into which the inner conductor having a cylindrical outer peripheral surface of the directional coupler is inserted. It has a band that tightens the outer periphery of the inner conductor to fix the inner conductor, and a spacer that has a cylindrical shape, the inner conductor is inserted and inserted into the inner conductor fixing portion, and has a flange structure and a screw structure. There is.

According to the present invention, operability and workability in adjusting the electrical characteristics of the directional coupler fixed to the cylindrical coaxial tube feeder are improved.

FIG. 1 is a side view showing the configuration of the first embodiment. FIG. 2 is a side view showing the configuration of the second embodiment. FIG. 3 is an exploded view showing the configuration of the second embodiment. FIG. 4 is a side view showing the configuration of the mount portion of the second embodiment. FIG. 5 is a side view showing the configuration of the spacer of the second embodiment. FIG. 6 is a side view showing the configuration of the third embodiment. FIG. 7 is an exploded view showing the configuration of the third embodiment. FIG. 8 is a side view showing the configuration of the mount portion of the third embodiment. FIG. 9 is a side view showing the configuration of the spacer of the third embodiment.

Hereinafter, the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing the configuration of the first embodiment. As shown in FIG. 1, the directional coupler 1 of the present embodiment includes an inner conductor 30 having a cylindrical shape and an inner conductor fixing portion 20 fixed to the outer conductor 10 of the coaxial tube feeder, and the inner conductor 30. The band 40 tightens the outer periphery of the inner conductor fixing portion 20 into which the inner conductor 30 is inserted to fix the inner conductor 30. Further, the directional coupler 1 of the present embodiment has a cylindrical shape, and includes a spacer 50 into which the inner conductor 30 is inserted and inserted into the inner conductor fixing portion 20. Further, the spacer 50 has a flange structure and a screw structure as a structure supported by the inner conductor fixing portion 20 and supporting the inner conductor 30. That is, the fixing structure of the inner conductor 30 of the present embodiment is the inner conductor fixing portion 20 fixed to the outer conductor 10 of the coaxial tube feeder and the inner conductor fixing into which the cylindrical inner conductor 30 of the directional coupler 1 is inserted. A band 40 for tightening the outer periphery of the portion 20 to fix the inner conductor 30 is provided. Further, the fixing structure of the inner conductor 30 of the present embodiment has a cylindrical shape, and the inner conductor 30 is inserted and inserted into the inner conductor fixing portion 20, and includes a spacer having a flange structure and a screw structure.

The inner conductor fixing portion 20 is fixed, for example, by fixing a fixing portion (not shown) coupled to the inner conductor fixing portion 20 to the outer conductor 10 of the coaxial tube feeder.

The inner conductor 30 includes a coupling loop inside for extracting a signal from a radio signal passing through a coaxial tube feeder. Further, the inner conductor 30 is provided with a coaxial connector on the upper part of the cylindrical shape for detecting the extracted signal.

The band 40 is, for example, a stainless band made of stainless steel.

The above-mentioned flange structure includes a flange portion protruding from the outer peripheral surface of a cylindrical or cylindrical component body in a direction perpendicular to the central axis of the cylindrical or cylindrical shape, and an inner diameter substantially equal to or larger than the outer diameter of the cylindrical or cylindrical shape. Refers to a structure consisting of a support portion that has an inner peripheral surface having a flange portion and rotatably supports the flange portion on a cylinder or a surface perpendicular to the central axis of the cylindrical shape of the component having the flange portion. The screw structure refers to a structure consisting of a male screw portion formed on a cylindrical or cylindrical outer peripheral surface and a female screw portion that engages with the male screw portion. The spacer 50 includes one of a flange portion and a support portion, and one of a male screw portion and a female screw portion. The inner conductor 30 and the inner conductor fixing portion 20 include the other of the flange structure or the other of the screw structure.

Next, the adjustment of the insertion amount and the angle of the directional coupler 1 of the present embodiment and the fixing work to the coaxial tube feeder will be described. First, the spacer 50 into which the inner conductor 30 is inserted is inserted into the inner conductor fixing portion 20, and the insertion amount is adjusted by the operator. Specifically, the inner conductor 30 moves in the vertical direction of FIG. 1 along the inner conductor fixing portion 20 by the rotating work of the screw structure of the operator, and the insertion amount is adjusted.

Next, the angle of the directional coupler 1 is adjusted. Specifically, the angle of the inner conductor 30 with the coaxial tube feeder is adjusted while the amount of insertion into the inner conductor fixing portion 20 is kept constant by the rotation work of the flange portion by the operator.

Finally, the outer circumference of the inner conductor fixing portion 20 is tightened by the band 40, and the inner conductor 30 is fixed to the inner conductor fixing portion 20 together with the spacer 50.

As described above, according to the present embodiment, the spacer is supported by the inner conductor fixing portion and has a screw structure as a structure for supporting the inner conductor, so that the insertion amount can be easily finely adjusted. , The operability and workability at the time of adjusting the electrical characteristics of the directional coupler are improved. Further, since the spacer has a flange structure, the insertion amount of the inner conductor can be kept constant even in the rotation operation at the time of adjusting the angle of the inner conductor with the coaxial tube feeder. Further, when the spacer is provided with a spacer having a flange structure and a screw structure, it is possible to independently perform the two adjustment processes of the insertion amount of the inner conductor and the angle adjustment with the coaxial tube feeder. As a result, the operation accuracy at the time of adjusting the directional coupler can be improved, and the work time required for the adjustment work can be shortened.

Next, the second embodiment will be described. FIG. 2 is a side view showing the configuration of the second embodiment of the present invention. Further, FIG. 3 is an exploded view showing the configuration of the second embodiment of the present invention. In the present embodiment, the inner conductor 31 is provided with the flange portion (first flange portion) of the above-mentioned flange structure, the spacer 51 is provided with the above-mentioned flange structure support portion (first support portion), and the spacer 51 is the above-mentioned. This is an example in which the male screw portion having the screw structure of the above is provided, and the inner conductor fixing portion 21b is provided with the female screw portion having the screw structure described above.

As shown in FIG. 2, the directional coupler 2 of the present embodiment has a mount portion 21 fixed to the outer conductor 11 of the coaxial tube feeder, and a band 41 fixing the mount portion 21 to the outer conductor 11 of the coaxial tube feeder. It includes a spacer 51 that fits with the mount portion 21, an inner conductor 31 that is inserted into the spacer 51, an inner conductor 31 and an inner conductor fixing portion 21b, and a band 42 for fixing the spacer 51.

As shown in FIG. 2, the inner conductor 31 has a cylindrical outer peripheral surface 31a. The outer diameter of the outer peripheral surface 31a of the inner conductor 31 is equal to or slightly smaller than the inner diameter of the cylindrical inner peripheral surface 51a of the spacer 51. Further, the inner conductor 31 has a flange portion 31b at the upper end portion protruding from the cylindrical outer peripheral surface of the inner conductor 31 in a direction perpendicular to the central axis of the cylindrical shape. When the band 42 is loosened, the flange portion 31b is rotatably supported by the support portion 51b provided at the upper end of the spacer 51 on a plane perpendicular to the cylindrical central axis of the inner conductor 31. Is rotatably supported inside the spacer 51. Further, the inner conductor 31 is provided with a coupling loop for extracting a signal from a radio signal passing through the coaxial tube feeder inside. Further, the inner conductor 31 is provided with a coaxial connector on the upper part of the cylindrical shape for detecting the extracted signal.

FIG. 4 is a side view of the mount portion 21 of the second embodiment. The mount portion 21 includes a feeder fixing portion 21a fixed to the outer conductor 11 of the coaxial tube feeder, and an inner conductor fixing portion 21b which is joined to the feeder fixing portion 21a to fix the inner conductor 31 and the spacer 51. The feeder fixing portion 21a of the mount portion 21 is a part of a cylindrical shape formed so as to be arranged along the outer circumference of the outer conductor 11 of the coaxial tube feeder, and is fixed to the outer conductor 11 of the coaxial tube feeder by the band 41. ..

The inner conductor fixing portion 21b is formed in a cylindrical shape. A female screw portion 21c is provided on the inner surface of the cylindrical portion of the inner conductor fixing portion 21b so as to engage with the male screw portion 51c provided by the spacer 51. The pitch of the threads of the female thread 21c of the inner conductor fixing portion 21b and the male thread 51c of the spacer 51 is designed according to the adjustment accuracy. If the required accuracy is not high, the amount of movement in the vertical direction with respect to the rotation of the spacer 51 can be increased by widening the pitch of the threads, and the speed can be adjusted at high speed. When the required accuracy is high, the amount of movement in the vertical direction with respect to the rotation of the spacer 51 can be reduced by narrowing the pitch of the threads, and can be precisely adjusted. As shown in FIG. 4, a slit 21d is formed in the cylindrical portion of the inner conductor fixing portion 21b in the length direction. The number of slits 21d may be one, but it may also be formed at positions facing each other in the cylindrical portion, and two slits 21d may be formed in the cylindrical portion of the inner conductor fixing portion 21b.

The band 41 is, for example, a stainless band made of stainless steel. The feeder fixing portion 21a in contact with the outer conductor 11 of the coaxial tube feeder is tightened and fixed together with the outer conductor 11 of the coaxial tube feeder by the band 41.

FIG. 5 is a side view showing the configuration of the spacer of the second embodiment. As shown in FIG. 5, the spacer 51 has a cylindrical shape, and the inner peripheral surface 51a of the spacer 51 has a cylindrical shape like the outer peripheral surface 31a of the inner conductor 31 to be inserted. The inner diameter of the cylindrical inner peripheral surface 51a of the spacer 51 is equal to or slightly larger than the outer diameter of the outer peripheral surface 31a of the inner conductor 31. Further, the spacer 51 is provided with a support portion 51b at the upper end thereof, which is in contact with the flange portion 31b of the inner conductor 31 and supports the inner conductor 31. Further, the spacer 51 is provided with a male screw portion 51c on the outer surface of the cylindrical portion so as to engage with the female screw portion 21c on the inner circumference of the inner conductor fixing portion 21b to be inserted. Further, as shown in FIG. 5, a slit 51d is formed in the cylindrical portion of the spacer 51 in the length direction of the cylinder. For example, two slits 51d are formed at positions facing each other of the cylinder.

The band 42 has substantially the same configuration as the band 41. With the spacer 51 into which the inner conductor 31 is inserted inserted into the inner conductor fixing portion 21b, the band 42 tightens the outer circumference of the inner conductor fixing portion 21b so that the spacer 51 and the inner conductor 31 are attached to the inner conductor fixing portion 21b. It is fixed. This is an example in which the spacer 51 is provided with the male screw portion having the above-mentioned screw structure, and the inner conductor fixing portion 21b is provided with the female screw portion having the above-mentioned screw structure.

Next, the adjustment of the insertion amount and the angle of the directional coupler 2 of the present embodiment and the fixing work to the coaxial tube feeder will be described.

First, the feeder fixing portion 21a of the mount portion 21 is fixed to the outer conductor 11 of the coaxial tube feeder by the band 41, so that the mount portion 21 is fixed to the coaxial tube feeder. Next, the insertion amount of the directional coupler 2 is adjusted. After the spacer 51 is screwed into the inner conductor fixing portion 21b of the mount portion 21, the spacer 51 is rotated clockwise and counterclockwise so that the spacer 51 moves in the vertical direction of FIG. 2 along the inner conductor fixing portion 21b. ..

Due to the vertical movement of the spacer 51, the inner conductor 31 moves in the vertical direction along the inner conductor fixing portion 21b. The rotation operation of the spacer 51 is temporarily stopped at a position where the insertion amount of the inner conductor 31 of the directional coupler 2 reaches a desired insertion amount.

Next, the angle of the directional coupler 2 is adjusted. The flange portion 31b of the inner conductor 31 is rotatably supported by the support portion 51b at the upper end of the spacer 51, and the inner conductor 31 is rotated while the spacer 51 is fixed to the inner conductor fixing portion 21b. The angle of the inner conductor 31 with the coaxial tube feeder is adjusted while keeping the amount of insertion into the fixed portion 21b constant.

Finally, in the band 42, the slits formed in the spacer 51 and the inner conductor fixing portion 21b are tightened together with the inner conductor fixing portion 21b, and the inner conductor fixing portion 21b, the spacer 51, and the inner conductor 31 are fixed. ..

As described above, according to the present embodiment, the directional coupler 2 includes a male screw portion 51c on the outer circumference of the spacer 51 and a female screw portion 21c on the inner circumference of the inner conductor fixing portion 21b. With this screw structure, by rotating the spacer 51, the main body of the inner conductor 31 can be moved in the vertical direction, and the amount of insertion of the inner conductor 31 into the inner conductor fixing portion 21b can be easily finely adjusted. Further, this screw structure can prevent fluctuations in the insertion amount of the inner conductor 31 when tightening and releasing the band 42.

Further, the inner conductor 31 is provided with a flange portion 31b protruding from the cylindrical outer peripheral surface of the inner conductor 31 in a direction perpendicular to the central axis of the cylindrical shape, and the spacer 51 is perpendicular to the central axis of the cylindrical inner peripheral surface of the spacer 51. A support portion 51b that supports the flange portion 31b on a surface is provided. This structure prevents the inner conductor 31 from falling out inside the spacer 51, and also reduces the amount of the inner conductor 31 inserted into the spacer 51 even during the rotation operation when adjusting the angle of the inner conductor 31 with the coaxial tube feeder. Can be constant. From this, adjusting the insertion amount of the spacer 51 into the inner conductor fixing portion 21b can be synonymous with adjusting the insertion amount of the inner conductor 31 into the inner conductor fixing portion 21b. Further, when the inner conductor 31 is replaced due to breakage or the like, the insertion amount is substantially fixed by the spacer 51, so that the reproducibility of the electrical characteristics of the inner conductor 31 before the replacement can be made very high. can get.

Further, with these configurations, it is possible to independently perform the two adjustment processes of the insertion amount of the inner conductor 31 and the angle adjustment with the coaxial tube feeder. As a result, the operation accuracy at the time of adjusting the directional coupler can be improved, and the work time required for the adjustment work can be shortened.

Next, a third embodiment of the directional coupler of the present invention will be described. FIG. 6 is a side view showing the configuration of the third embodiment. Further, FIG. 7 is an exploded view showing the configuration of the third embodiment. In the present embodiment, as shown in FIG. 7, the inner conductor 32 has a male screw portion having the above-mentioned screw structure, the spacer 51 has the female screw portion having the above-mentioned screw structure, and the spacer 52 has the flange having the above-mentioned flange structure. This is an example in which a portion (second flange portion) is provided, and the inner conductor fixing portion 22b is provided with the support portion (second support portion) of the above-mentioned flange structure.

As shown in FIG. 7, the directional coupler 3 of the present embodiment has a mount portion 22 fixed to the outer conductor 11 of the coaxial tube feeder, and a band 41 fixing the mount portion 22 to the outer conductor 11 of the coaxial tube feeder. It includes a spacer 52 that fits with the mount portion 22, an inner conductor 32 that is inserted into the spacer 52, an inner conductor 32, an inner conductor fixing portion 22b, and a band 42 for fixing the spacer 52.

As shown in FIG. 7, the inner conductor 32 is provided with a male threaded portion 32a that engages with the female threaded portion 52a on the inner surface of the spacer 52. Similar to the second embodiment, the inner conductor 32 includes a coupling loop for extracting a signal from the radio signal passing through the coaxial tube feeder inside, and the coaxial upper part of the cylindrical shape for detecting the extracted signal. It has a connector.

FIG. 8 is a side view of the mount portion 22 of the directional coupler 3 of the third embodiment. The mount portion 22 includes a feeder fixing portion 22a fixed to the outer conductor 11 of the coaxial tube feeder, an inner conductor fixing portion 22b joined to the feeder fixing portion 22a to fix the inner conductor 32 and the spacer 52. Similar to the second embodiment, the feeder fixing portion 22a of the mount portion 22 is a part of a cylindrical shape formed so as to be arranged along the outer circumference of the outer conductor 11 of the coaxial tube feeder, and the coaxial tube feeder is formed by the band 41. It is fixed to the outer conductor 11 of.

The inner conductor fixing portion 22b of the mount portion 22 is formed in a cylindrical shape, and the inner peripheral surface 22c of the inner conductor fixing portion 22b of the present embodiment is not threaded and has a cylindrical surface. The inner conductor fixing portion 22b of the present embodiment is provided with a support portion 22d at the upper end portion which is in contact with the flange portion 52c of the spacer 52 and supports the spacer 52. Further, as in the second embodiment, a slit 22e is formed in the cylindrical portion of the inner conductor fixing portion 22b in the length direction. The number of slits 22e may be one, but it may also be formed at positions facing each other in the cylindrical portion, and two slits 22e may be formed in the cylindrical portion of the inner conductor fixing portion 22b.

As the band 41, as in the second embodiment, for example, a stainless band made of stainless steel is used, and the feeder fixing portion 22a in contact with the outer conductor 11 of the coaxial tube feeder is attached together with the outer conductor 11 of the coaxial tube feeder. Tighten and fix.

FIG. 9 is a side view showing the configuration of the spacer of the third embodiment. As shown in FIG. 9, the spacer 52 has a cylindrical shape, and is provided with a female screw portion 52a on the inner surface of the cylindrical portion so as to engage with the male screw portion 32a on the outer peripheral surface of the inner conductor 32. There is. The outer peripheral surface 52b of the spacer 52 is a cylindrical surface. Further, the spacer 52 has a flange portion 52c at the upper end thereof, which projects perpendicularly to the central axis of the cylindrical outer peripheral surface 52b of the spacer 52. The flange portion 52c of the spacer 52 is supported by a support portion 22d provided at the upper end portion of the inner conductor fixing portion 22b on a plane perpendicular to the cylindrical central axis of the spacer 52. Further, as in the second embodiment, a slit 52d is formed in the cylindrical portion of the spacer 52 in the length direction of the cylinder as shown in FIG. In the present embodiment as well, the number of slits 52d may be one, but it may also be formed at positions facing each other of the cylinders, and two slits 52d may be formed in the cylindrical portion of the spacer 52.

Next, the adjustment of the insertion amount and the angle of the directional coupler 3 of the present embodiment and the fixing work to the coaxial tube feeder will be described.

First, as in the second embodiment, the feeder fixing portion 22a of the mount portion 22 is fixed to the outer conductor 11 of the coaxial tube feeder by the band 41, so that the mount portion 22 is fixed to the coaxial tube feeder. Next, the insertion amount of the inner conductor 32 of the directional coupler 3 is adjusted. In the present embodiment, when the inner conductor 32 is screwed into the spacer 52 and then rotated clockwise and counterclockwise, the inner conductor 32 of the directional coupler 2 moves inside the spacer 52 in the vertical direction of FIG. .. The rotation operation of the inner conductor 32 is temporarily stopped at a position where the insertion amount of the inner conductor 32 of the directional coupler 3 reaches a desired insertion amount.

Next, in the present embodiment, the inner conductor 32 is rotated by rotating the spacer 52. The rotation of the spacer 52 also rotates the inner conductor 32, and the coaxial tube of the inner conductor 32 keeps the insertion amount into the inner conductor fixing portion 22b constant without changing the insertion amount into the inner conductor fixing portion 22b. The angle with and is adjusted.

Finally, when the outer circumference of the inner conductor fixing portion 22b is tightened by the band 42, the spacer 52 and the inner conductor 32 are fixed to the inner conductor fixing portion 22b.

As described above, according to the present embodiment, the directional coupler 3 is provided with a male screw portion on the outer circumference of the inner conductor 32 and a female screw portion on the inner circumference of the spacer 52. With this screw structure, by rotating the inner conductor 32, the main body of the inner conductor 32 can be moved in the vertical direction, and it is possible to easily realize a fine adjustment of the insertion amount of the inner conductor 32 into the inner conductor fixing portion 22b. .. Further, it is possible to prevent fluctuations in the insertion amount of the inner conductor 32 when the band 42 is released from tightening.

Further, the spacer 52 is provided with a flange portion that protrudes from the cylindrical outer peripheral surface of the spacer 52 in a direction perpendicular to the cylindrical central axis, and the inner conductor fixing portion 22b is flanged on a surface perpendicular to the cylindrical central axis of the spacer 52. It has a support part that supports the part. This structure prevents the spacer 52 from falling out inside the inner conductor fixing portion 22b, and keeps the insertion amount of the inner conductor 32 constant even during the rotation operation when adjusting the angle of the inner conductor 32 with the coaxial tube feeder. be able to.

Further, it is possible to independently perform the two adjustment processes of the insertion amount of the inner conductor 31 and the angle adjustment with the coaxial tube feeder. As a result, the operation accuracy at the time of adjusting the directional coupler can be improved, and the work time required for the adjustment work can be shortened.

Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made within the scope of the present invention in terms of the structure and details of the present invention.

1, 2, 3 Directional couplers 10, 11 Coaxial tube feeder outer conductor 21, 22 Mount part 21a, 22a Feeder fixing part 20, 21b, 22b Inner conductor fixing part 21c Female thread part 21d, 22e Slit 22c Inner peripheral surface 22d Supporting part 30, 31, 32 Inner conductor 31a Outer peripheral surface 31b Flange part 32a Male threaded part 41, 42 Band 50, 51, 52 Spacer 51a Inner peripheral surface 51b Supporting part 51c Male threaded part 51d, 52d Slit 52a Female threaded part 52b Outer surface 52c Flange

Claims (6)

An inner conductor with a cylindrical outer peripheral surface and
The inner conductor fixing part fixed to the outer conductor of the coaxial tube feeder,
A band for fixing the inner conductor by tightening the outer circumference of the inner conductor fixing portion into which the inner conductor is inserted,
A spacer having a cylindrical shape, the inner conductor being inserted and inserted into the inner conductor fixing portion, and having a flange structure and a screw structure.
Directional coupler with. The screw structure is
A male screw portion provided on the outer peripheral surface of the cylindrical shape of the spacer,
A female screw portion that engages with the male screw portion provided on the inner conductor fixing portion and
The flange structure is composed of
A first flange portion of the inner conductor protruding from the outer peripheral surface of the cylindrical shape in a direction perpendicular to the central axis of the cylindrical shape, and a first flange portion.
A first support portion provided on the spacer to support the first flange portion, and a first support portion.
Consists of
The directional coupler according to claim 1. The screw structure is
A male screw portion provided on the outer peripheral surface of the cylindrical shape of the inner conductor, and
A female threaded portion provided on the spacer and engaging with the male threaded portion,
Consists of
The flange structure is
A second flange portion of the spacer projecting from the outer peripheral surface of the cylindrical shape in a direction perpendicular to the central axis of the cylindrical shape,
The inner conductor fixing portion includes a second support portion that supports the second flange portion and a second support portion.
Consists of
The directional coupler according to claim 1. The directional coupler according to any one of claims 1 to 3, wherein the spacer has a cylindrical slit in the central axis direction. The directional coupler according to claim 4, wherein the spacer is cylindrical and includes two slits at positions facing each other. The inner conductor fixing part fixed to the outer conductor of the coaxial tube feeder,
A band for fixing the inner conductor by tightening the outer circumference of the inner conductor fixing portion into which the inner conductor having a cylindrical outer peripheral surface of the directional coupler is inserted.
A spacer having a cylindrical shape, the inner conductor being inserted and inserted into the inner conductor fixing portion, and having a flange structure and a screw structure.
Fixed structure with.

Images