JPH0888513A - Paraboloidal antenna - Google Patents

Abstract

PURPOSE: To easily assemble a paraboloidal antenna for BS/CS by eleiminating a bolt to mount a paraboloidal part on a back face mounting part and reducing the number of parts. CONSTITUTION: This parabol antenna which receives by collecting a wave from a BS or CS on a primary radiator placed at the focaus of a reflecting mirror by using the reflecting mirror consisting of paraboloid of revolution is constituted in such a way that the paraboloidal part 1 which comprises the paraboloid of revolution and the back face mounting part 1a placed on the back face of the paraboloidal part and to mount the paraboloidal part 1 on a holding tool 2 are integrally molded. The paraboloidal part 1 and the back face mounting part 1a are formed of aluminum alloy. Otherwise, the back face mounting part and a boss for screw-tightening are integrally molded on the back face of the paraboloidal part, and a tap is provided on the boss, and the paraboloidal part is fixed with a nut by passing the boss through a paraboloidal part mounting hole opened on a back face part. Otherwise, the paraboloidal part which comprises the paraboloid of revolution is formed separately from the back face mounting part on the back face of the paraboloidal part, and the parabolic part is adhered with the back face mounting part and fixed when they are assembled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a reflecting mirror composed of a paraboloid of revolution to transmit a radio wave sent from a BS (broadcast satellite) or a CS (communication satellite) to a primary focus of the reflecting mirror. The present invention relates to a rear mounting portion of a BS / CS parabolic antenna that collects and receives a radiator.

[0002]

2. Description of the Related Art A back mounting portion of a conventional BS / CS parabolic antenna is shown in FIG. 4A is a side view,
(B) is a top view. Here, 21 is a parabolic part made of an aluminum alloy material, 22a, 22b and 22c are made of synthetic resin, and 22a is a rear mounting part for mounting the parabola to holders 22b and 22c for mounting the parabola on the pole 23 or the like. The parabolic part 21 includes a rear mounting part 22a and a bolt 24.
a, fixed with nut 24b. On the other hand, the rear mounting portion 22a is rotatably mounted on the pole 23 by a holder 22b and a rotating shaft portion 22d, and the elevation angle of the parabolic portion 21 is set.
Fix with e. The holder 22b for the pole 23 is the holder 2
The pole 23 is pressed together with 2c and fixed with the screw portion 22f. Thus, the parabolic portion 21 made of aluminum alloy and the rear mounting portion 22a made of synthetic resin are fixed by bolts and nuts 24. Since the bolt 24a has its head exposed on the parabolic reflecting mirror surface that reflects radio waves, it is necessary to use a bolt having a special structure that cannot hold the head of the bolt when tightening the bolt. Further, since bolts are used, the number of fastening parts is increased, and there is a problem that assembly man-hours are required.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a parabolic antenna for BS / CS, which has a small number of parts in a rear mounting portion and is easy to assemble.

[0004]

A parabolic antenna that receives radio waves from a BS or CS by collecting them into a primary radiator placed at the focal point of a reflecting mirror by using a reflecting mirror composed of a rotating paraboloid A parabolic portion forming a parabolic surface and a back surface attaching portion for attaching the parabolic portion to a holder, which are on the back surface of the parabolic portion, are integrally formed.

The parabolic portion and the back mounting portion are made of aluminum alloy.

On the back surface of the parabolic portion, a boss for screwing with the back mounting portion is integrally formed, a tap is cut on the boss, and a nut is inserted through a parabolic portion mounting hole formed in the back portion.

The parabola portion and the back surface mounting portion which are on the back surfaces of the parabolic portion and the parabolic portion forming the paraboloid of revolution are formed separately, and the parabolic portion and the back surface mounting portion are bonded and fixed during assembly.

[0008]

[Operation] By integrally molding the parabolic part and the back mounting part with an aluminum alloy, the bolts and nuts for stopping the parabolic part and the back mounting part are unnecessary. By integrally forming the boss for fixing the parabolic part, the back mounting part and the screw with the parabolic part, a bolt with a special structure that cannot hold the head of the bolt becomes unnecessary. Also, by attaching the parabolic portion and the back mounting portion with an adhesive, a special boss is not required.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A parabolic antenna according to the present invention will be described in detail below with reference to the drawings. FIG. 1A is a side view of the antenna of one embodiment, FIG. 1B is a top view of the same, 1 is a parabolic portion, 1 a is a rear mounting portion, 2 is a holder for a pole,
3 is Paul. The parabolic part 1 and the back mounting part 1a are made of aluminum alloy and are integrally molded. The parabolic portion with a rear mounting portion having such a structure is rotatably attached by the holder 2 with the pole 3 and the rotating shaft portion 1b, and the elevation angle of the antenna is set and then fixed by the screw portion 1c. The holder 2 holds the pole 3 with the portion 2a attached to the back face attaching portion 1a of the parabolic portion and the pole holding portion 2b, and fixes it with the screw portion 2c.

FIG. 2 is a side view of another embodiment of the parabolic antenna according to the present invention. On the back surface of the parabolic portion 1 made of an aluminum alloy, a boss 4 standing substantially vertically is integrally formed with the parabolic portion 1, and a tap is provided on the outer periphery of the boss 4. The boss 4 on the back surface of the parabolic portion 1 passes through the hole of the back surface mounting portion 5 and is fixed by the nut 6. Rear mounting part 5 and pole 3
The holders 2a and 2b are fixed by setting the elevation angle of the parabolic portion 1 and fixed to the pole 3 as well.

FIG. 3 is a side view of another embodiment of the parabolic antenna according to the present invention. The parabolic portion 1 made of an aluminum alloy and the rear mounting portion 7 are individually formed as in the conventional example, and an adhesive is applied to the adhesive surface 1a at the time of assembly and fixed by pressure. The holder 2 for the rear mounting portion 7 and the pole 3 is fixed after the elevation angle of the antenna is set in the same manner as described above.
Fixed to.

[0012]

EFFECT OF THE INVENTION In a parabolic antenna for receiving radio waves from a BS or CS by using a reflecting mirror composed of a paraboloid of revolution, and collecting them into a primary radiator placed at the focal point of the reflecting mirror, a parabolic part and a rear mounting part. By integrally molding the aluminum alloy with aluminum alloy, bolts and nuts for stopping the parabolic part and the rear mounting part are unnecessary, and the assembly is easy. By integrally molding the parabolic part, the rear mounting part, and the boss for screwing together with the parabolic part, a bolt with a special structure that cannot hold the head of the bolt is unnecessary, and the assembly becomes easy. Also, by adhering the parabolic portion and the back mounting portion with an adhesive, a special boss is not required and the assembly can be facilitated.

[Brief description of drawings]

FIG. 1A is a side view and FIG. 1B is a top view of a parabolic antenna according to an embodiment of the present invention.

FIG. 2 is a side view of another embodiment of the parabolic antenna according to the present invention.

FIG. 3 is a side view of another embodiment of the parabolic antenna according to the present invention.

FIG. 4A is a side view of a conventional parabolic antenna,
(B) is a top view.

[Explanation of symbols]

 1 Parabolic Part 1a Rear Mounting Part 2 Holding Tool 3 Pole 4 Boss 5 Rear Mounting Part 6 Nut 7 Rear Mounting Part 21 Parabolic Part 22a Rear Mounting Part 22b Holding Tool 22c Holding Tool 23 Pole 24a Bolt 24b Nut

Claims (4)

[Claims] 1. A parabolic antenna for receiving radio waves from BS or CS by using a reflecting mirror composed of a paraboloid of revolution to collect to a primary radiator placed at the focal point of the reflecting mirror,
A parabolic antenna in which a parabolic part forming a paraboloid of revolution and a back mounting part for mounting the parabolic part on a back surface of the parabolic part are integrally molded. 2. The parabolic antenna according to claim 1, wherein the parabolic portion and the back mounting portion are formed of an aluminum alloy. 3. The parabolic antenna according to claim 1, wherein a boss which stands substantially vertically on the back surface of the parabolic portion is integrally formed with the parabolic portion, and the parabolic portion is fixed to the back mounting portion by the boss. 4. A parabolic antenna for receiving radio waves from BS or CS by using a reflector composed of a paraboloid of revolution to collect to a primary radiator placed at the focus of the reflector,
A parabolic antenna formed by bonding a parabolic portion forming a paraboloid of revolution and a back mounting portion for mounting the parabolic portion to a holder on the back surface of the parabolic portion.