JP2855103B2 - Antenna mounting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna attachment for mounting an antenna element radially on a support.

[0002]

2. Description of the Related Art Conventionally, an antenna element is mounted on a support of an antenna while maintaining a predetermined distance radially from the support of the antenna.

[0003]

However, in such an antenna, there is a problem that the mounting of the antenna element is not easy, and therefore, the installation work of the antenna is also not easy. Therefore, the present invention provides an antenna that can perform the antenna installation work very easily, can perform the installation work by one person, and can prevent the antenna element from falling to the ground during the installation work or due to wind and rain. It is intended to provide a fixture.

[0004]

According to a first aspect of the present invention, there is provided a boss connected to a support of an antenna, and a tubular member connected radially to the boss and connected to an antenna element. A plurality of overhangs to be attached, and a head projection formed by projecting upward from each overhang so that one end of a tubular member to be attached to each overhang can be contacted above the boss. A fixing bolt passed through a bolt insertion hole formed in the cylindrical member ,
When attaching the tubular member to the overhang, the fixing bolt
One end of the tubular member inserted into the bolt insertion hole of the member
When the part comes into contact with the side of the head projection, the tip of the fixing bolt
A fixing bolt insertion hole is provided at each overhang so that the end can be inserted.

According to a second aspect of the present invention, there is provided a boss connected to a support of an antenna, and a plurality of protrusions for mounting a cylindrical member for connecting the antenna element by projecting radially sideways to the boss. And a head projection formed on the upper part of the boss so as to protrude above the cylindrical member mounting surface of each projection, and a side face of the head projection in a direction in which each projection extends. A projection for positioning is provided so that the one end opening of the tubular member can be inserted, a fixing bolt passed through a bolt insertion hole formed in the tubular member, and When installing
Fixing bolt inserted into bolt insertion hole of tubular member
One end opening of the cylindrical member is inserted into the positioning protrusion in a state,
When it comes into contact with the side of the head projection, the tip of the fixing bolt
An antenna fixture comprising: a fixing bolt insertion hole provided in each overhanging portion so as to be insertable.

According to the present invention, when a cylindrical member for connecting an antenna element is mounted on a column of an antenna, a boss portion of an antenna mounting member is mounted on the column of the antenna, and one end opening of the cylindrical member is mounted on the antenna. The cylindrical member is inserted into the positioning protrusion of the tool and the tubular member is placed on the overhang. Then, the tubular member is temporarily fixed to the antenna fixture, and the fixing bolt of the tubular member faces the fixing bolt hole of the overhanging portion.
By tightening the fixing bolts, the tubular member is permanently fixed to the antenna attachment.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an external configuration of an antenna according to the present embodiment, and reference numeral 21 denotes a column attached to an installation surface 22. A lightning rod 24 is vertically attached to the head of the column 21 via an arm fixing bracket 23 as an antenna mounting member.

As shown in FIG. 2, one end of each of the four mounting arms 25 is attached to the arm fixing bracket 23, and the other end is formed so as to form a cross in a radial direction toward the side of the support column 21. Is extended. At the tip of each mounting arm 25, an antenna element 26 is mounted
Mounted through.

The electric wires 28 connected to the antenna elements 26 are connected to wiring boxes 29 attached to the columns 21, respectively, and are connected to the antenna cords of connected devices such as transceivers in the wiring boxes 29.

As shown in FIGS. 3 to 5, the arm fixing bracket 23 has a boss 31 which can be inserted into the upper end of the column 21 and a boss 31 which extends radially from the boss 31. It comprises a rib 32 for attaching an arm and a cap-shaped head projection 33 provided above the boss 31 and protruding from the upper surface of the rib 32 for attaching the arm. Note that the arm fixing bracket 23 may be made of metal, plastic, or the like, as long as it can hold the mounting arm 25 and the antenna element 26.

The head projection 33 of the arm fixing bracket 23 has, on its side surface, a positioning projection 3 for positioning the end of the mounting arm, which protrudes radially in the same direction as the arm mounting rib 32.
4 are provided. The positioning projection 34 may be integrally formed with the arm fixing bracket 23, or another one may be fixed by screws or the like.

The positioning projection 34 is attached to the mounting arm 25.
A gap X is made from the mounting surface A of the arm mounting rib 32 to such an extent that the one end opening can be easily inserted. That is, the gap X is set so that the inner thickness of the tube of the mounting arm 25 can be inserted without difficulty when the mounting arm 25 is inserted into the positioning projection 34 from diagonally above as shown in FIG. . The shape of the positioning protrusion 34 may be any shape such as a round shape or a square shape, as long as the mounting arm 25 can be inserted.

In the middle of each arm mounting rib 32,
On the mounting surface A of the arm mounting rib 32, two locking claws 35 and 36 projecting upward from this surface are provided separately from each other. The locking claws 35 and 36 are for positioning and temporarily fixing the mounting arm 25 with respect to each arm mounting rib 32.

In the middle of each arm mounting rib 32, screw holes 41, 42 for screwing final locking bolts 37, 38 for fixing the mounting arm 25 to each arm mounting rib 32 are provided. It is provided penetrating downward.

The mounting arm 25 has a square cross section.
It is formed in a tubular shape. The mounting arm 25 is made of metal or plastic. The mounting arm 25
Is not limited to the above as long as the material has a strength capable of holding the antenna element 26.

The shape of the mounting arm 25 is not limited, such as a square, a round, or a polygon. However, in consideration of construction and economy, a square pipe is preferable.

At one end of the mounting arm 25, a through hole 4 for loosely inserting the fixing bolts 37 and 38 of the mounting arm 25 is provided.
3, 44 are provided. Before the antenna is installed, two fixing bolts 37 and 38 are inserted into the through holes 43 and 44 in the mounting arm 25 in advance. When the mounting arm 25 is mounted, the fixing bolts 37 and 38 come off. In order to prevent such a situation, bolt removal washers 47 and 48 are mounted inside the mounting arm 25 of the final locking bolts 37 and 38.

On the mounting surface of the mounting arm 25, positioning locking holes 45, 46 for inserting and locking the locking claws 35, 36 of the arm mounting rib 32 are formed. . A reinforcing U-shaped plate 49 is attached to a tightening portion of the fixing bolts 37, 38 of the mounting arm 25, and the final fixing bolts 37, 38 are tightened via the reinforcing U-shaped plate 49. The reinforcing U-shaped plate 49 does not need to be attached if the thickness of the attachment arm 25 has sufficient strength.

In this embodiment having such a structure, when the mounting arm 25 is mounted on the arm fixing bracket 32, one end opening of the mounting arm 25 is obliquely mounted from above as shown in FIG. Into the positioning projection 34 of the rib 32.

Subsequently, the mounting arm 25 is moved in the direction of the solid arrow B in the drawing to be horizontal with respect to the arm mounting rib 32, and the positioning locking holes 45, 46 of the arm mounting rib 32 are Fit into the locking claws 35 and 36. Then, FIG.
As shown in (b), the final fixing bolts 37, 38 enter the screw holes 41, 42 of the arm mounting rib 32.

Thus, the mounting arm 25 is temporarily fixed to the arm mounting rib 32. That is, the reaction force of the fulcrum below the positioning protrusion 34 of the arm mounting rib 32 is caused by the bending moment generated in the direction of the solid arrow B shown in FIG. Will fit.

Next, the final fixing bolts 37, 38 are tightened and fixed to the screw holes 41, 42 of the arm mounting rib 32. Thus, the mounting arm 25 is connected to the arm mounting rib 32.
It is finally stopped at. This operation is repeated, and each mounting arm 25 is permanently fixed to the arm mounting rib 32, whereby the mounting of the mounting arm 25 to the arm fixing bracket 32 is completed.

As described above, the mounting arm 25 is inserted obliquely from above into the positioning protrusion 34 of the arm mounting rib 32 and fitted into the locking claws 35, 36, so that positioning and temporary fixing can be easily performed. It can be carried out. As a result, the mounting arm 25 with respect to the
It is not necessary to adjust the perpendicularity θ and to hold the mounting arm 25. Therefore, even in a work situation such as a bad scaffold, the mounting work can be easily performed by one worker.

The positioning hole 4 of the mounting arm 25
5 and 46 are the locking claws 35 and 36 of the arm mounting rib 32.
Then, the final fixing bolts 37 and 38 enter the screw holes 41 and 42 of the arm mounting rib 32. This eliminates the need to adjust the position of the mounting arm 25 while checking the insertion positions of the permanent fixing bolts 37 and 38 as in the related art. Therefore, the mounting arm 25 to which the antenna element 26 is mounted is fixed to the fixing bolts 37 and 3.
The mounting arm 25 can be mounted safely and securely without dropping to the ground during the tightening operation of Step 8.

Further, bolt removal washers 47, 48 are provided on the inner side of the mounting arm 25 of the final locking bolts 37, 38.
Is attached, the final locking bolts 37 and 38 can be prevented from coming off when the mounting arm 25 is mounted.

Further, by forming the locking claws 35 and 36 at two places on the mounting surface of the mounting arm 25 of the arm mounting rib 32, the accuracy of the mounting angle θ of the mounting arm 25 can be further improved. it can.

Further, the final fixing bolt 3 of the mounting arm 25 is provided.
Since the reinforcing U-shaped plate 49 is attached to the tightening portions of the locks 7, 38, it is possible to prevent the tube of the mounting arm 25 from being collapsed by tightening the fixing bolts 37, 38.

Further, the mounting arm 25 is temporarily fixed to the arm mounting rib 32, and the fulcrum reaction force below the positioning projection 34 of the arm mounting rib 32 depends on the weight of the mounting arm 25 and the weight of the antenna element. In order to balance with the bending moment generated in the direction of the solid arrow B shown in FIG. , 38 can be prevented from falling down.

In this embodiment, the case where the four antenna elements 26 are fixed to the arm fixing bracket 32 via the mounting arm 25 has been described. However, three or less or five or more antenna elements 26 are fixed. May be attached to the arm fixing bracket 32 via the attachment arm 25.
In this case, as many as the number of antenna elements 26, the arm mounting ribs 32 and the positioning protrusions 34 are provided on the arm fixing bracket 32.
Are provided on the arm mounting ribs 32, and the locking claws 35, 3 are provided.
6 may be provided.

Since the mounting angle becomes more important in appearance as the number of the antenna elements 26 mounted on the arm fixing bracket 32 increases, the effect of eliminating the need for adjusting the mounting angle is great. Further, the greater the number of antenna elements 26, the greater the effect of shortening the mounting time.

The arm fixing bracket of the antenna may be the one shown in FIGS. 7 and 8 in addition to the above-described one. That is, a boss 3 that can be inserted into the upper end of the column 2, four arm mounting ribs 4 extending radially from the boss 3, and an upper part of the arm mounting rib 4 above the boss 3. Cap-shaped head 5 provided to protrude
Consists of

The arm mounting rib 4 is provided with two bolt screw holes 6 and 7 spaced apart from each other, and the end of each mounting arm 8 is provided with a bolt through hole 9 and 10.
Are provided through.

Each mounting arm 8 is attached to this arm fixing bracket 1.
When mounting, one end of the mounting arm 8 is placed on the upper surface of the arm mounting rib 4. And arm mounting rib 4
The through holes 9 and 10 for bolts are positioned at positions opposing the screw holes 6 and 7 for bolts. In this state, the bolts 11 and 12 are passed through the bolt holes, and the mounting arms 8 are tightened and fixed to the arm fixing bracket 1.

[0034]

As described above in detail, according to the present invention, one end opening of the cylindrical member is inserted into the positioning projection of the antenna mounting tool, and the positioning locking hole of the cylindrical member is stretched. By locking the protruding portion to the positioning claw portion, the fixing bolt can be temporarily fixed in a state facing the fixing bolt hole, so that the positioning of the tubular member can be easily performed. Thereby, the antenna installation work can be performed very easily.

Further, since the positioning work of the tubular member can be made unnecessary, the installation work of the antenna can be performed by one person. In addition, since the tubular member is temporarily fixed to the antenna mounting fixture by the positioning claw and the positioning protrusion, even if the fixing bolts are loosened during installation work or due to weather, the antenna element remains on the ground. Falling can be prevented.

[Brief description of the drawings]

FIG. 1 is a front view showing an external configuration of an antenna according to an embodiment of the present invention.

FIG. 2 is an exemplary top view showing an external configuration of the antenna according to the embodiment;

FIG. 3 is an enlarged view showing a configuration of an arm fixing bracket shown in FIG. 2;

FIG. 4 is a front view showing a configuration when a mounting arm is not mounted on the arm fixing bracket shown in FIG. 2;

FIG. 5 is a front view showing a configuration when a mounting arm is mounted on the arm fixing bracket shown in FIG. 4;

FIG. 6 is a view for explaining the operation of the embodiment.

FIG. 7 is a top view of a modified example of the arm fixing bracket of the embodiment.

FIG. 8 is a side view of a modified example of the arm fixing bracket of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 ... Prop 23 ... Arm fixing bracket (antenna mounting) 25 ... Mounting arm (cylindrical member) 26 ... Antenna element 32 ... Arm mounting rib (protruding part) 33 ... Head projection 34 ... Positioning projection 35, 36 ... locking claw (positioning claw) 37, 38 ... final locking bolt (fixing bolt) 41 ... screw hole (fixing bolt hole) 45, 46 ... positioning locking hole

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masahiko Ozawa 1406 Hasunuma, Omiya City, Saitama Prefecture Yagi Antenna Co., Ltd. Omiya Plant (72) Inventor Kazuo Uezawa 1406 Hasunuma, Omiya City, Saitama Prefecture Yagi Antenna Omiya Corporation In-plant (56) References JP-A-62-101101 (JP, A) JP-A-54-49463 (JP, U) JP-A-53-45845 (JP, U) JP-A-53-17140 (JP, U) ) Jikyo Sho 34-4310 (JP, Y1) Jigyo Sho 45-30886 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01Q 1/12-1/26

Claims (2)

(57) [Claims] 1. A boss connected to a support of an antenna, a plurality of protrusions for radially projecting laterally from the boss and attaching a cylindrical member for connecting an antenna element, and the boss. One end of the tubular member to be attached to each overhang is mounted on the top of the head so that it can protrude upward from each overhang so that one end of the tubular member can abut, and a bolt inserted into the tubular member The fixing bolt passed through the hole and the cylindrical member
When mounting on the part, the fixing bolt is
One end of the cylindrical member inserted into the bolt insertion hole
Abuts against the side surface of the head projection, the fixing bolt
A fixing bolt insertion hole provided in each of the overhanging portions so that a tip of the antenna can be inserted. 2. A boss portion connected to a column of an antenna, a plurality of projecting portions for projecting radially sideways to the boss portion and attaching a cylindrical member for connecting an antenna element, and the boss portion. A head projection formed on the upper part of the projection so as to protrude above the cylindrical member mounting surface of each projection, and protruding on a side surface of the head projection in a direction in which the respective projection extends. A positioning projection provided so that the one-end opening of the tubular member can be inserted, a fixing bolt passed through a bolt insertion hole formed in the tubular member, and the tubular member attached to the overhang. Install
When the fixing bolt is in the bolt insertion hole of the cylindrical member
When the cylindrical member is inserted into the
It is inserted into the positioning projection and abuts against the side of the head projection.
Then, a fixing bolt insertion hole provided in each of the projecting portions is provided so that the tip of the fixing bolt can be inserted.