JPH071610U - Coaxial cable coupler for communication antenna - Google Patents

Abstract

(57) [Abstract] [Purpose] Positioning of the coaxial cable at the center conductor connection position, electrical connection between the outer conductor of the coaxial cable and the coupler body, and the connection location and the center conductor connection space. The work time required to secure watertightness will be greatly reduced and work efficiency will be improved. [Constitution] The coaxial cable 12 (14) has a center conductor 23.
The fastening metal fitting 31, the washer 32, the gasket 33, and the wedge member 34 are fitted to the exposed outer cover body 30, and then the wedge member 34 is attached to the tape.
The outer conductor 29 is added to the outer surface 35 and inserted into the holes 43 and 46 of the connector body 21. If the outer conductor 29 is sandwiched between the taper surface 35 and the taper hole 44 of the coupler body 21 by tightening the fastening metal fitting 31, the tip of the center conductor 23 is the center conductor of the center conductor connecting space 25. The gasket 33 is positioned at the connection position, and at the same time, the gasket 33 is pressed against the hole 46 and the outer cover body 30 to prevent rainwater from entering the void 25.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a coaxial cable coupler for a communication antenna used for connecting a plurality of communication antennas for transmitting and receiving the same frequency, which are assembled in a stack, and a communication device.

[0002]

[Prior art]

 An example of this type of coaxial cable coupler is a coupler for a communication antenna disclosed in Japanese Utility Model Publication No. 63-48966. This product is equipped with multiple inlets and a single spigot seat around the main body, and the other ends of the multiple coaxial cables whose one end should be connected to multiple communication antennas are The outer conductor is soldered to the inlet, the center conductor is soldered to the center conductor of the connector seat, and the coaxial cable connected to the communication device is detachably attached to the connector seat by the connector provided at its free end. There is.

[0003]

[Problems to be solved by the device]

 However, the coaxial cable to be connected to the communication antenna is troublesome to handle because the tip of the center conductor is positioned at the center conductor connection position of the plug seat and the outer conductor is soldered to the lead-in port. In addition, this is an inefficient work that takes time. Also, with such mounting, rainwater will enter the space for connecting the center conductor from the inlet, so after the coaxial cable is mounted on the main body, complicated infiltration prevention measures such as self-sealing tape will be inevitable. . Therefore, the work time from the positioning of the tip of the center conductor of the coaxial cable to the position of the center conductor of the stopper seat to the completion of the water infiltration prevention process becomes long, and the work is complicated and inefficient. was there. In addition, the coaxial cable cannot be easily attached to and detached from the main body by soldering, and in order to facilitate the attachment and detachment, the main body is provided with a stopper seat and the coaxial cable is provided with a stopper. That is expensive.

Therefore, in the present invention, the work required for positioning the coaxial cable at the center conductor connection position, connecting the outer conductor of the coaxial cable to the coupling body, and ensuring the watertightness of the space for connecting the center conductor. Greatly shortens the time and streamlines work, and all coaxial cables can be easily attached to and detached from the connector body, and no plug is required to attach the coaxial cable to the connector body. An object of the present invention is to provide a coaxial cable coupler for a communication antenna.

[0005]

[Means for Solving the Problems]

 To achieve the above object, in the present invention, each of the other ends of a plurality of coaxial cables connecting one end to each of a plurality of communication antennas, and a coaxial cable connecting one end to a communication device. In the coaxial cable coupler of the communication antenna, which is configured to connect the other end of the coaxial cable to connect the plurality of communication antennas to the communication device, the outer coating of the coaxial cable is A coaxial cable fixture that fits in order of the center conductor protruding from the end, the fastening metal fitting from the outer conductor toward the outer sheath, the watertight material, and the wedge material with the taper surface on the opposite side of the watertight material. A plurality of cores, each of which is formed of a conductive material and has a hollow space for connecting a core conductor therein, can have an exposed central conductor of a coaxial cable inserted therein. Hole and the wedge material and water in each hole. This tape is formed by the hole for guiding the material, the screw hole for screwing the fastening metal, and the taper surface of the wedge material when the tip of the center conductor is at the center conductor connecting position of the center conductor connecting space. -A taper hole is formed to sandwich an outer conductor along the surface of the paper.

[0006]

[Work]

 To the outer sheath of the coaxial cable, from the exposed tip of the central conductor to the outer sheath, tighten the metal fittings, the watertight material, and the wedge material with the taper surface on the opposite side of the watertight material. Insert the coaxial cable with the exposed tip of the outer conductor attached to the taper surface from the exposed tip of the center conductor into the hole in the connector body, and then taper the wedge material and the connector body. Tighten the clamp until the outer conductor is sandwiched between the taper hole and. As a result, electrical connection between the main body of the coupler and the outer conductor is obtained, at the same time, the exposed tip of the center conductor is positioned at the center conductor connection position in the center conductor connection space, and the wedge material and the tightening metal fitting are The water-tight material, which is elastically deformed by being pinched by, is pressed against the hole of the connector body and the outer sheath of the coaxial cable to reach the connection point between the connector body and the outer conductor and the center conductor connection space. Prevent rainwater from entering.

The center conductors of a plurality of coaxial cables fixed to the coupler body connect the tips to each other. For this connection, an integral type or a split center conductor connecting piece having a plurality of through holes for inserting the center conductor may be used.

When the coaxial cable is attached to the main body of the coupler by the fastening metal fitting, a washer may be interposed between the fastening metal fitting and the watertight material to smoothly tighten the fastening metal fitting.

[0009]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, 1 is an antenna mast, 2 is a cross mount attached to the antenna mast 1 by U bolts 3, nuts 4, etc. On the left and right sides of the cross mount 2, the communication antennas 7, 7 for transmitting and receiving the same frequency are horizontally arranged so as to be orthogonal to the arm 5.

Reference numeral 8 is a coaxial cable coupler for a two-row stack, and 10 is a coaxial cable coupler for a four-row stack. The left and right protrusions 11 and 11 of the coaxial cable coupler 8 for stacking two rows are connected to the power feeding portions (not shown) of the communication antennas 7 and 7 by the coaxial cables 12 and 12. The downward projections 13 and 13 of the coaxial cable connectors 8 and 8 (one 8 is not shown) located at both ends of the arm 5 are coaxial cables 14 and 14 for coaxially forming a four-row stack. It is connected to the left and right protrusions 15 and 15 of the cable connector 10. The downward projection 16 of the coaxial cable coupler 10 for a four-row stack is connected to a communication device (not shown) by a coaxial cable 17. The coaxial cables 12, 12, 14, 14 are attached to the arm 5 and the coaxial cable 17 is attached to the antenna pole 1 by a vinyl tape 19, respectively.

In the above embodiment, the communication antennas 7, 7, 7, 7 assembled in a stack and one communication device are connected to seven coaxial cables 12, 12, 14, 12, 12, 14, 14. 17 and three coaxial cable couplers 8, 8 and 10 are connected, but two communication antennas 7 and 7 assembled in a stack and one communication device are three coaxial. When connecting the cables 12, 12 and 14 with one coaxial cable coupler 8, the left and right protrusions 11 and 11 of the coaxial cable coupler 8 are connected by the coaxial cables 12 and 12. The downwardly projecting portion 13 of the coaxial cable coupler 8 is connected to the communication device by the coaxial cable 14, which is connected to the power feeding portions of the communication antennas 7, 7.

As shown in FIGS. 3 and 4, the coaxial cable coupler 8 includes a coupler body 21 and a coaxial cable mount for detachably mounting the coaxial cables 12, 12, 14 on the coupler body 21. A central conductor connecting piece 24 for connecting the exposed tips of the central conductors 23, 23, 23 of the coaxial cables 12, 12, 14 in the central conductor connecting voids 25 of the couplings 22, 22, 22 and the coupling body 21. A cover mechanism 26 is provided for covering the center conductor connecting space 25 of the coupler body 21.

The coupling body 21 is formed of a conductive material in a substantially T-shape, and a circular center conductor connecting space 25 is formed at a location where the axes of the projecting portions 11, 11, and 13 projecting in three directions intersect. This central conductor connecting space 25 is communicated with the outside by a circular recess 42 with a screw hole 41 having a larger diameter than this, and further, the coaxial cables 12, 12 are connected to the protrusions 11, 11, 13. , 14 are formed with holes 43, 43, 43 into which the exposed tips of the central conductors 23, 23, 23 of the central conductors 23, 23, 23 can be inserted into the central conductor connecting positions of the central conductor connecting space 25.

In the hole 43, the exposed end of the center conductor 23 of the coaxial cable 12 (14) in the center conductor connecting space 25 is connected to another coaxial cable via the center conductor connecting piece 24. A taper hole 44 for sandwiching the outer conductor 29 along with a taper surface 35 of a wedge member 34, which will be described later, at a position where it is connected to the exposed end of the center conductor 23 of the core. A screw hole 47 for screwing the watertight material, for example, the hole portion 46 for guiding the gasket 33 and the washer 32 and the tightening fitting 31 is formed in communication with the hole 44.

The coaxial cable mount 22 includes a wedge member 34 having a taper surface 35 formed at one end of the outer peripheral surface thereof, a gasket 33, a washer 32 having a diameter slightly smaller than that of the gasket 33, and a tightening metal fitting 31. .

The cover mechanism 26 includes a gasket 48 fitted in the circular recess 42, a washer 49, and a cover 50 with a groove 51 screwed into the screw hole 41 of the recess 42.

In the coaxial cable 12 (14), the outer coating material 30 on the side to be attached to the coupling body 21, the outer conductor 29, and the insulating material 28 are cut out by a predetermined length to expose the central conductor 23, and the outer coating body 30 is further exposed. Cut out a predetermined length. On the outer cover 30 on the cut-out side, a wedge member 34 in which a tightening fitting 31, a washer 32, a gasket 33, and a taper surface 35 which constitute the coaxial cable attachment 22 is provided on the opposite side of the gasket 33 is provided. When the outer conductors 29 are sequentially inserted, the outer conductors 29 are folded back to be attached to the taper surface 35 of the wedge member 34. Incidentally, plugs 38, 38, 39 are attached to the other ends of the coaxial cables 12, 12, 14 as shown in FIG. 2, and the plugs 38, 38 are used for connecting the communication antennas 7, 7. The power supply unit is connected to the communication device with a plug 39.

In order to mount the coaxial cables 12, 12, and 14 on the coupling body 21, the coaxial cable 12 (14) has the outer conductor 29 and the taper surface 35 of the wedge member 34 as described above. Then, the central conductor 23 is inserted into the holes 43 and 46 from the exposed tip end of the central conductor 23, and the fastening fitting 31 is screwed into the screw hole 47. Then, the fastening metal member 31 is tightened until the outer conductor 29 is sandwiched between the taper surface 35 of the wedge member 34 and the taper hole 44 of the connector body 21, so that the outer conductor 29 and the connector body 21 are separated from each other. At the same time, the exposed end of the central conductor 23 is positioned at the central conductor connecting position of the central conductor connecting space 25, and the gasket 33 is pinched by the wedge member 34 and the washer 32 to be externally connected. The cover 30 and the hole 46 are pressed against each other to prevent rainwater from entering.

When the center conductor connecting piece 34 is an integrated type, the tip ends of the center conductors 23 positioned one after another in the center conductor connecting space 25 are inserted into the T-shaped guide holes 36 of the center conductor connecting piece 34. In this way, the center conductor connecting piece 34 is split into two, and the center conductor connecting pieces 34 are fitted into both the T-shaped guide grooves and then clamped by screws, so that the center conductors 23, 23, 23 of the coaxial cables 12, 12, 14, 23 are integrally connected. The center conductors 23, 23, 23 can be directly soldered. When the connection is completed, a gasket 48 and then a washer 49 are fitted into the hole 42, the cover 50 screwed into the screw hole 41 is fastened with a screwdriver fitted into the groove 51, and the lid is closed to prevent rainwater from entering. prevent.

The coaxial cable coupler 10 for a 4-row stack shown in FIG. 1 has the same structure as the coaxial cable coupler 8 for a 2-row stack. Therefore, in the above description, the coaxial cable coupler 8 is the coaxial cable coupler 10, the coaxial cables 12, 12, 14 are the coaxial cables 14, 14, 17 and the coupler body 21. Is replaced with the coupling body 53, and the protrusions 11, 11, 13 of the coupling body 21 are read as the protrusions 15, 15, 16 of the coupling body 53.

[0021]

[Effect of device]

 As described above, according to the present invention, the electrical connection between the outer conductor of the coaxial cable and the coupling body at the time of fixing the coaxial cable to the coupling body by the fastening metal fitting, and the electrical connection point Since it is possible to simultaneously prevent rainwater from entering the space for connecting the center conductor and to position the coaxial cable at the position for connecting the center conductor in the space for connecting the center conductor, these operations can be completed easily and quickly. It has an excellent effect.

Further, the coaxial cable can be easily attached to and detached from the coupler body, and the outer conductor of the coaxial cable and the coupler body are not required to be soldered, and the coaxial cable can be removed. There is an advantage that a water infiltration prevention process after being attached to the coupling body is also unnecessary. Furthermore, since a plug is not required to attach the coaxial cable to the coupler body, it is useful for reducing the cost.

Since the tips of the center conductors of the coaxial cables are connected by the center conductor connecting piece without soldering in the center conductor connecting space, the center conductors can be easily connected to each other.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of the present invention for connecting four communication antennas assembled in a stack to a communication device.

FIG. 2 is a front view of a coaxial cable coupler in which two coaxial cables for a communication antenna and a coaxial cable for a communication device are connected.

FIG. 3 is a partially cutaway cross-sectional view of a coaxial cable coupler.

FIG. 4 is a partially cutaway vertical sectional view of a coaxial cable coupler.

[Explanation of sign]

 7 Communication Antenna 8 Coaxial Cable Coupling 10 Coaxial Cable Coupling 12 Coaxial Cable 14 Coaxial Cable 21 Coupling Body 22 Coaxial Cable Fixing 23 Central Conductor 24 Central Conductor Connecting Piece 25 Central Conductor Connection space 29 Outer conductor 30 Outer sheath 31 Tightening fitting 32 Washer 33 Watertight material 34 Wedge material 35 Taper surface 43 Hole portion 44 Taper hole 46 Hole portion 47 Screw hole 53 Coupling body

Claims (3)

[Scope of utility model registration request] 1. A plurality of coaxial cables connecting one end to each of a plurality of communication antennas and the other end of a coaxial cable connecting one end to a communication device are coupled to each other, In the coaxial cable coupler of the communication antenna for connecting the plurality of communication antennas and the communication device,
The outer cover of the coaxial cable has a central conductor protruding from the other end and exposed, and a fastening metal fitting, a watertight material and a taper surface are provided on the opposite side of the watertight material from the outer conductor toward the outer cover. An exposed center conductor of the coaxial cable is provided around a coupling body which is provided with a coaxial cable fitting which is fitted in order of a wedge material and which is formed of a conductive material and has a cavity for connecting the center conductor therein. A plurality of holes that can be inserted into the central conductor connecting space are formed, and in each hole, a hole for guiding the wedge material and the watertight material, a screw hole for screwing the fastening metal, and a hole for the center conductor are formed. When the tip is located at the center conductor connecting position of the center conductor connecting space, a taper hole is formed between the taper surface of the wedge member and the outer conductor fitted to the taper surface. A coaxial cable coupler for a characteristic communication antenna. 2. Each coaxial cable in a space for connecting a center conductor
The coaxial cable coupler of the communication antenna according to claim 1, further comprising a center conductor connecting piece that integrally connects the ends of the center conductors of the bulls. 3. A coaxial cable for a communication antenna according to claim 1, wherein a washer is interposed between the tightening metal member and the watertight material.
Bull joiner.