JPS60140904A - Parabolic antenna - Google Patents

Abstract

PURPOSE:To attain an antenna with ease of forming and handling, small size and low manufacture cost by projecting a connecting projected ridge to a rear part of a circumferential ridge of a reflection unit body having a shape of a parabola curved shape divided equally, combining a desired number of the reflection unit bodies and tightening the butted connecting projected ridges so as to connect them. CONSTITUTION:Each reflection unit body 1 is formed as a parabola curved face and the circumferential ridge has the connecting projected ridge 3 prolonged to the rear side respectively. Moreover, the reflection unit body 1 has a circular-arcuate notch to form a ventilation hole 5 at the center and the projection ridge 7 is formed to the notch. A conductor 9 has a ring 13 supported by a link piece 11 therearound and the ring 13 is connected to the butting projected ridge 7 at the center of the reflection unit body 1. In assembling the parabolic antenna, the butting projected ridge 7 of each reflection unit body 1 is butted to the ring 13 and each reflection unit body is connected to the ring 13 by a tightening means such as a bolt and the connecting projected ridges 3, 3 of the adjacent reflection bodies 1, 1 are connected by a tightening means such as a bolt.

Description

[Detailed description of the invention] The present invention relates to a parabolic antenna.

Conventionally, in relatively small-sized barabot antennas, the reflector having a parabolic curved surface was formed by press molding as an integrally formed piece of a highly reflective metal plate. However, in this case, the overall diameter becomes too small, making it inconvenient to handle, and also requires a large-scale mold, which increases production costs.

This invention was made in view of such conventional problems, and involves connecting a plurality of reflective units obtained by equally dividing a parabolic curved surface to form a parabolic curved surface. The desired parabolic curved surface is obtained by using the same method, and the abutting parts of each unit are connected with each other using bolts or other fastening means to form the whole, which is easy to handle, and the manufacturing cost is low because the mold used is small. The purpose is to provide parabolic antenna gold.

Hereinafter, this invention will be explained in detail based on embodiments shown in the drawings.

FIG. 1 shows an assembly diagram of an embodiment of the present invention, in which a reflecting unit 1 having a shape obtained by equally dividing a parabolic curved surface of a desired diameter.
A parabolic antenna obtained by combining a desired number of antennas, six in this example, is shown. Each reflective unit 1 has a parabolic curved surface, and has a connecting protrusion 3 extending toward the back at its peripheral edge. Further, this reflective unit 1 has an arcuate notch in order to form a ventilation hole 5 in the center, and a butting ridge 7 is also formed in that part.

Further, as shown in FIG. 1, the waveguide 9 is provided with a ring 13 around the periphery supported by a connecting piece 11, and this ring 13 is connected to the abutting ridge 7 at the center of the reflecting unit 1. I'm here because it's done.

When assembling a parabolic antenna using the reflecting unit 1 and the waveguide 9f having the above configuration, the abutting ridge 7 of each reflecting unit 1 is butted against the ring 13, and the ring 13 is tightened with a fastening means such as a bolt. The reflective units 1 are connected to each other, and the connecting edges 3 are connected between adjacent reflectors 1.
, 3 are connected and joined together using fastening means such as bolts. Here, by placing the reflecting unit 1 in a desired manner, a parabolic antenna 15 having a perfectly parabolic curved surface as shown in FIG. 3 can be obtained, for example.
Further, as shown in FIG. 4, if only three antennas are used, it is also possible to obtain a parabolic antenna 17 having a half-parabolic curved surface. The number of reflective units 1 to be used can be arbitrarily determined depending on the purpose, installation location, and other conditions.

Furthermore, as shown in FIG. 5, if a parallel trapezoidal auxiliary reflection unit 19 bent into a circular arc is connected to the outer periphery of the reflection unit 1, a parabolic antenna with a desired diameter can be obtained. can be formed freely.

As described above, this invention extends a connecting ridge to the peripheral edge of a reflecting unit having a shape obtained by equally dividing a parabolic curved surface, and combines a desired number of reflecting units and the connecting ridges abut against each other. Since they are fastened together, each reflecting unit itself can be made small and an antenna with a large diameter parabolic curved surface can be assembled.It is easy to mold, and it is also small for transportation and other purposes. It can be transported as a reflective unit and is easy to handle.
Furthermore, when forming by pressing or other processing means, the main mold can be small, and the manufacturing cost is also low.

Furthermore, if an air vent hole is provided in the center of the waveguide, a ring is provided around the hole, and the ridges on the center side of each reflector are connected to the ring, the wind can be easily removed and rain can be removed. Another feature is that it is difficult for snow to accumulate, which further improves durability.

[Brief explanation of drawings]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a perspective view of a reflective unit used in the above, Fig. 3 is a plan view of the same embodiment, and Fig. 4 is a combination of three reflective units. FIG. 5 is a plan view of an embodiment of a parabolic antenna formed using the same method, and FIG. 5 is a plan view of still another embodiment. DESCRIPTION OF SYMBOLS 1... Reflection unit, 3... Connection ridge, 5... Air vent hole, 7... Butting ridge, 9... Waveguide, 13
...Ring, 15...Parabola antenna, 17...
- Parabolic antenna, 19... Auxiliary unit. -5= Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1) A connecting protrusion is extended to the back of the periphery of a reflective unit having a shape obtained by equally dividing a parabolic curved surface, and a desired number of these reflective units are combined and the connecting protrusions abut against each other. A parabolic antenna whose edges are connected by a fastening means. 2) The parabolic antenna according to claim 1, characterized in that an air vent hole is provided in the center portion, and a waveguide is provided in the portion of the air vent hole.