JPS6336741Y2 - - Google Patents

Description

[Detailed description of the invention] This invention mainly relates to a pair of antenna reflectors that are attached at an appropriate angle to the boom above and below the rear end of the boom of the antenna that receives external radio waves such as television signals. This makes it possible to reduce the weight of the reflective element, reduce the wind pressure that the reflective element receives during use, maintain the original shape of the reflective element during transportation and handling, and eliminate the need for manual assembly. It is an object of the present invention to provide an antenna reflector that can be operated simply and quickly.

Embodiments of the present application will be described below with reference to the drawings. FIG. 1 shows an antenna 1 for receiving television signals. In this antenna 1, 2 is a post, 3 is a boom attached to this post 2 via a support rod 4, 5 is a large number of waveguide elements arranged in parallel on this boom 3, and 6 is also a boom 3. It is a sub-radiation element fixed to the. Reference numerals 7 and 7 denote a pair of reflectors that are installed above and below the rear end of the boom 3 at appropriate angles to the boom 3, respectively, as shown in Fig. 2, and these reflectors are similarly constructed. There is. Reference numeral 8 designates mounting screws for mounting the above-mentioned upper and lower pair of reflectors 7, 7 above and below the rear end of the boom 3 at appropriate inclinations relative to the boom 3, respectively. 3 to 6 show the reflector 7 described above. In this reflector 7,
Reference numeral 9 denotes a holding frame in the form of a hollow pipe, which is made of an aluminum material such as aluminum. There are many (seven in the drawing) on the side of this holding frame 9.
Through-holes 10 are formed in a longitudinal direction at appropriate intervals. The diameters of these insertion holes 10 are set to be approximately the same as the diameter of a thin reflective element, which will be described later, so that it can be inserted therein with less rattling. Reference numerals 11 and 12 denote two reinforcing frames in the form of hollow pipes, which are arranged parallel to each other at an appropriate interval on the left and right sides of the holding frame 9, and are made of an aluminum material such as aluminum. ing. These reinforcing frames 11,1
Insertion holes 1 are provided on the side surface of No. 2 on the side of the holding frame 9 at positions opposite to the respective insertion holes 10 of the holding frame 9.
3 and 14 are bored in a dead end shape.
15a and 15b are connection frames extending from the end of the reinforcing frame 11 to the end of the holding frame 9, and 16a and 16b are the reinforcing frames 12.
The connecting frame extends from the end of the holding frame 9 to the end of the holding frame 9, and is formed integrally with reinforcing frames 11 and 12, respectively. Reference numeral 17 denotes a large number (seven in the drawing) of reflective elements arranged closely in parallel between the reinforcing frames 11 and 12, and are made of thin wires. The number of reflective elements 17 may be any number. These reflective elements 17 are held by inserting their intermediate portions into the respective insertion holes 10 of the holding frame 9, and both end portions thereof are inserted into the respective insertion holes 13, 1 of the reinforcing frames 11, 12.
4, respectively. And the above-mentioned holding frame and reinforcing frame are
Both of them play a holding role and a reinforcing role, respectively. 18 and 19 are T-shaped connecting pieces attached to one end of the holding frame 9 and the ends of the connecting frames 15a and 16a by rivets 20, respectively; 21 and 22 are T-shaped connecting pieces that are attached to the other end of the holding frame 9 and These are T-shaped connecting pieces attached to the ends of the connecting frames 15b and 16b by rivets 20, and these connect the ends of the holding frame 9 and the connecting frames 15a, 15b, 16a, and 16b, respectively. are doing. 23 is one of the above connecting pieces 22
A mounting piece integrally formed with the boom 3 is provided with a mounting hole 23a, and is fixed to a mounting tool 24 attached to the rear end of the boom 3 with a mounting screw 8. The mounting piece 23 may have any shape as long as it can fix the reflector 7 to the boom 3. Also, this mounting piece 23
may be directly attached to the boom 3, or may be fixedly attached using another means that does not use the attachment hole 23a, such as a locking means.

In the case of the structure described above, when assembling the reflector 7, first the holding frame 9 having a large number of insertion holes 10 on the side surface, the holding frame 9 having a large number of insertion holes 13 on the side surface,
14 and connecting frames 15a, 1 at both ends.
5b, 16a, 16b are integrally provided, two reinforcing frames 11, 12, a large number of thin reflective elements 17... and four connecting pieces 18, 1.
Prepare 9, 21, and 22. Next, holding frame 9
As shown in FIG.
7 to the center of each of these reflective elements 1.
7 is held parallel to the holding frame 9. After that, as shown in FIGS. 5 and 6, each of the reflective elements 17
One end of the insertion hole 13 of one reinforcing frame 11
The other end of each reflective element 17 is inserted into the insertion hole 14 of the other reinforcing frame 12 to be held by this reinforcing frame 11.
Hold it at 2. At this time, both reinforcing frames 11,
12 are arranged in parallel at appropriate intervals on both sides of the holding frame 9, and the ends of the connecting frames 15a, 15b and the connecting frames 16a, 16b are positioned near both ends of the holding frame 9 to form a T-shape. Ru. After that, connecting pieces 1 are attached to both sides of one end of the holding frame 9 and the ends of the connecting frames 15a and 16a.
8 and 19 respectively, and connect these connecting pieces 18,
19 are attached to the holding frame 9 and the connecting frames 15a, 16a by rivets 20, respectively. In addition, the other end of the holding frame 9 and the connecting frame 15b,
Connecting pieces 21 and 22 are attached to both sides of the ends of the frame 16b, and these connecting pieces 21 and 22 are connected to the holding frame 9 and the connecting frames 15b and 1 with rivets 20.
6b, respectively, thereby completing the assembly of the reflector 7. The reflector 7 can be assembled manually without using welding means,
It can be assembled inexpensively by a cottage industry. Next, when transporting or handling the reflector 7,
Surrounding reinforcing frames 11, 12 and connecting frame 1
By holding 5a, 15b, 16a, and 16b, deformation of the reflective element 17 can be prevented. In addition, when using the reflector 7, as shown in Figs. These two reflectors 7, 7 are attached to the rear end of the boom 3 by tightening them by
They are fixedly attached to the bottom of the boom 3 at an appropriate angle and used in this state. In this state of use, since the reflective elements 17, 17 of the reflectors 7, 7 are composed of thin wires, the reflective elements 17, 1
It is possible to reduce the wind pressure applied to the reflector 7, and also to reduce the weight of the reflectors 7, 7, thereby reducing the force applied to the mounting piece 23 of the reflector 7, the boom 3, the post 2, etc. This allows these structures to be simplified.

As mentioned above, this invention has a large number of reflective elements arranged in parallel with each other, so
When receiving radio waves using this, reflected waves can be shielded and good electrical characteristics can be maintained.

Furthermore, even if a device is equipped with a large number of reflective elements as described above, the reflective elements are made of thin wires, so when this is used, the wind pressure applied to the reflective elements can be reduced. This makes it possible to simplify the structure of the reflector mounting piece, boom, post, etc., and also to reduce the weight of the reflective element, reducing the overall weight, making it easier to carry. This has the effect of allowing you to easily carry it around with less force.

Furthermore, even if the reflective elements are made of thin wires as described above, each reflective element is held at its middle and both ends by a hollow pipe-shaped holding frame and a reinforcing frame. When handling it, it can be handled by holding the holding frame or reinforcing frame, which has the advantage of preventing deformation or damage to the reflective element during handling and making it easier to handle.

Furthermore, since the reflecting element is held by being inserted into the insertion hole of the holding frame or reinforcing frame, it can be easily assembled by hand without using a welding machine. It has the advantage of being a structure that can be assembled at a low cost as a cottage industry.

[Brief description of the drawings]

The drawings show an embodiment of the present application. Fig. 1 is a perspective view of the antenna, Fig. 2 is a perspective view of the reflector in use, Fig. 3 is an exploded perspective view of the reflector, and Fig. 4 is the reflector. FIG. 5 is a partially enlarged view of FIG. 4, and FIG. 6 is a sectional view of the reinforcing frame. 7... Reflector, 9... Holding frame, 10,1
3, 14...Insertion hole, 11, 12...Reinforcement frame, 15a, 15b, 16a, 16b...Connection frame, 17...Reflection element, 18, 19, 21,
22... Connection piece, 23... Mounting piece.

Claims (1)

[Scope of utility model registration request] Antenna reflectors 7 are installed above and below the rear end of the boom 3 at appropriate angles to the boom 3.
In this case, the reflector 7 has a hollow pipe-shaped holding frame 9 made of aluminum located in the center thereof, and is arranged in parallel at appropriate intervals on both sides of the holding frame 9. two hollow pipe-shaped reinforcing frames 11 and 12 made of aluminum;
Connecting frames 15a, 15b, 16a, 16b extending from both ends of the two reinforcing frames 11, 12 toward the holding frame 9, respectively.
and a large number of thin wire-shaped reflective elements 1 installed in parallel between the reinforcing frames 11 and 12.
7, one end of the holding frame 9 and each one end of the connecting frames 15a, 16a on the side closer to this, and three at the other end of the holding frame 9 and each other end of the connecting frames 15b, 16b on the side closer to this. It consists of two connecting pieces 19 and 22 formed in a size that overlaps each of the three parts in order to connect the three parts to each other, and the holding frame 9 has a large number of connecting pieces 19 and 22 arranged at appropriate intervals in the longitudinal direction. An insertion hole 10 is provided through the insertion hole 10, and the intermediate portion of each of the reflective elements 17 is passed through the insertion hole 10, and the reinforcing frames 11 and 12 are provided with a hole opposite to each insertion hole 10 of the holding frame 9. Insertion holes 13 and 14 are formed in a dead-end shape at opposite positions, into which both ends of the reflective element 17 are respectively inserted, and each of the connecting pieces 1 is inserted into the holes.
9 and 22 are fixed to each of the above three parts to connect the three parts, and in addition, a mounting piece 23 for attaching to the boom 3 is connected to one of the above connecting pieces 19 and 22. An antenna reflector characterized by: