JPH04133501A - Antenna system - Google Patents

Abstract

PURPOSE:To simplify a structure for attaching an antenna to a pole by providing a coupling member provided with a member for supporting a converter in a state where the converter can turn in the vertical direction around a reference point at the upper section and a cylindrical or frame-like member which is engaged with the pole and supports the converter at the lower section. CONSTITUTION:A coupling member 90 is integrally formed with side plates 92 and 93 for fitting a converter 70 to one end of a cylindrical section 91. At the time of adjusting the elevation of a reflecting mirror 60, the mirror 60 is fixed by tightening bolts 94a, 94b, 99a, and 99b after the bolts 94a, 94b, 99a, and 99b are loosened and the angle of the converter 70 is adjusted within the extents of circular-arc holes 97 and 98. At the time of adjusting the azimuth of the mirror 60, the mirror 60 is fixed to a pole 80 by means of bolts 100 after the bolts 100 are loosened and the member 90 is around the pole 80. When this antenna is constituted in such a manner, the coupling member 90 for coupling the converter 80 to the pole 80 can be integrally formed by press working, etc., and the number of used parts can be made smaller and structure can be made simpler as compared with a conventional antenna system.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an antenna device used for satellite broadcasting, satellite communication, etc., and in particular, to simplify the structure for attaching a converter to a ball. It was made so that it could be done.

(Prior Art) Conventionally, for example, a reflecting mirror of a parabolic antenna device is rotatably attached to a ball via a mount.

As shown in FIG. 9, such an antenna device has a parabolic plate-shaped reflecting mirror 10 and a primary radiator 20 that receives radio waves converged by the reflecting mirror 10 as main elements. be done. -order radiator 20 is integrated with a frequency converter.

The overall external shape of the reflecting mirror 10 is a bowl shape with the opening side being concave, and the back surface of the reflecting mirror 10 has a mount 40.
It is attached to the ball 30 via.

Further, the -order radiator 20 is disposed on the surface side of the reflecting mirror 10 by an arm 50 extending from the mount 40.

FIG. 10 is an enlarged view showing the mount 40. As shown in FIG.

The mount 40 is constructed by placing a substantially U-shaped metal fitting 42 on the inside of a metal fitting 41 having a U-shaped cross section, and attaching a pole fixing metal fitting 45 to the metal fitting 41. Side surfaces 41a, 41b of metal fitting 41 and side surfaces 42a, 4 of metal fitting 42
2b has left and right bolts 43 and 43 as centers of rotation, and the metal fitting 42 is rotatable relative to the metal fitting 41.

Further, an arm 50 is attached to the metal fitting 42.

Furthermore, circular arc holes 41c and 41c (the right side not shown) are formed in the side surfaces 41a and 41b of the metal fitting 41, respectively, and the bolts 44 and 44 (the right side not shown) are inserted through these circular holes 41c and 41c. It is screwed into a threaded hole (not shown) on the side of the metal fitting 42.

On the other hand, a curved surface 41 for receiving the ball 30 is provided on the back side of the metal fitting 41.
d is formed, and the ball fixing fitting 45 is also provided with a curved surface 45d corresponding to this. The metal fittings 41 and the metal fittings 45 can be fixed by tightening the balls 30 present between the metal fittings 41 and the metal fittings 45 with bolts 46. Metal fittings 4
1 is provided with a plurality of bent portions 44e for attaching the reflecting mirror 10 (see FIG. 9). A through hole 44f is provided in this bent portion 44e. A screw is passed through the through hole 44f, and the metal fitting 41 is screwed to the back surface of the reflector 1°.
When adjusting the elevation angle of 0, loosen bolts 43 and 44,
After adjusting the angle of the metal fitting 42, tighten the bolts 43 and 44 to fix the metal fitting 42. To adjust the azimuth of the reflector 10, loosen the bolt 46 and rotate the mount 40 around the ball 30. Then, tighten the bolt 46 to secure the mount 40.

According to such an antenna device, the mount 40 has a large number of parts, and each of the metal fittings 41.45 has a curved surface 41d,
45d, the shape is also complicated.

This has led to an increase in manufacturing costs. Further, in the case where the -order radiator 20 is disposed on the surface side of the reflecting mirror 10 as in this conventional example, the cost increases by the arm 50.

On the other hand, among antenna devices for satellite broadcasting, there is also a planar antenna device configured with an array antenna (antenna element).

FIGS. 11 and 12 are a perspective view and a sectional view showing such a planar antenna device.

As shown in FIG. 11, the planar antenna device includes a planar antenna 11 formed by arranging a large number of antenna elements on a printed circuit board and connecting them with a feed line, and processes electrical signals from the feed line of the planar antenna 11. The main element is the converter 12.

A converter 12 is provided on the back of the planar antenna 11, and this converter 12 connects the ball 1 via a mount 14.
It is attached to 3. The structure of the mount 14 for adjusting the direction of the planar antenna 11 is similar to that of the mount 40 shown in FIG.

According to such an antenna device, in addition to the disadvantage that the mount 40 has a large number of parts and is complicated, the converter 12 is attached close to the back of the planar antenna 11 as shown in FIG. However, when connecting a signal cable to the connector 12a of the converter 12 and taping it for waterproofing, there are drawbacks such as difficulty in performing the taping.

(Problems to be Solved by the Invention) Conventional antenna devices have the disadvantage that the mount for attaching the antenna to the ball has a large number of parts and has a complicated structure.

An object of the present invention is to provide an antenna device that can eliminate the above-mentioned problems and simplify the structure for attaching the antenna to the ball.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes an antenna that receives radio waves from a satellite and converts them into electrical signals, and an antenna that is housed in a housing and that is attached to the antenna and receives signals from the antenna. A converter for receiving electrical signals, a ball for supporting the converter to which the antenna is attached, and a means for connecting the converter and the ball, the upper portion being configured to rotate the converter in the vertical direction about a reference point. and a connecting member having a cylindrical or frame-like member provided at the lower part to engage with the ball and to support the converter rotatably in the left and right directions about the ball axis. It is characterized by the following:

(Function) According to the present invention, when connecting a converter with an antenna attached to a ball, the azimuth can be set by connecting the ball to the cylindrical or frame-shaped member of the connecting member and fixing it with bolts. The elevation angle can be set by fixing the converter to the top of the connecting member with bolts. Azimuth and elevation angle adjustments can be easily made by tightening bolts. By using such a connecting member, the structure for attaching the antenna to the ball can be simplified.

(Example) Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

1 to 4 show an embodiment of the antenna device according to the present invention, FIG. 1 is an exploded perspective view, FIG. 2 is a perspective view of the assembled state, and FIG. 3 is an enlarged view of the mount part. FIG. 4 is a perspective view of the connection cable.

In FIG. 1, the antenna device includes a reflecting mirror 60 and a backfire type primary radiator 71 that is attached to the back of the reflecting mirror 60 and receives radio waves converged by the reflecting mirror 60 by a backfire type primary radiator 71 that protrudes from the surface of the reflecting mirror 60. converter 7
0 and a connecting member 90 that connects the converter 70 to the ball 80.

The reflecting mirror 60 is formed into a plate shape with a parabolic curved surface, has a hole 61 in the center, and has four threaded portions 62 (only two are shown) on the back surface for assembling the structure on the back surface. ing. The converter 70 has a cylindrical shape and houses a converter circuit therein, and has a power supply line 72 at one end.
A backfire type primary radiator 71 is provided through the reflector 60, an output connector 73 is provided at the other end, and the primary radiator 71 is passed through the hole 61 of the reflector 60. It is arranged on the surface of 60. The feed line 72 is composed of a coaxial line or the like, and is configured to electrically connect the primary radiator 71 and the converter circuit.

Further, at one end of the converter 70, a metal fitting 74 is provided for mounting the reflecting mirror corresponding to the threaded portion 62 of the reflecting mirror 60. Reflector 60 is attached to converter 70 by fixing with screws.

Female screw portions 76 and 77 are provided on the side surface of the housing of the converter 70 .

The connecting member 90 is integrally formed with side plates 92 and 93 for attaching the converter 70 to one end of the cylindrical portion 91. The side plates 92, 93 are formed with through holes 95, 96 for inserting bolts 94a, 94b. (the right side is not shown).

Furthermore, circular arc holes 97.98 (the right side is not shown) are formed in the side plates 92, 93 of the converter 70, respectively, and the bolts 99a and 99b pass through the circular arc holes 97.98, and the bolts 99a and 99b pass through the circular arc holes 97. It is screwed into the female threaded portion 77 (the right side is not shown).

The cylindrical part 91 has bolts 100, 100 for fixing the ball.
A through hole (not shown) into which is screwed is formed.

When such an antenna device is assembled, as shown in FIG. 2, the converter 70 is attached from the back side of the reflecting mirror 60, and the converter 70 is connected to the ball 80 via the connecting member 90.

Further, as shown in FIG. 3, the side plate 92 is formed in an arc shape on the output connector 73 side, and an elevation scale 110 is provided on the arc-shaped portion, and an indicator 78 is provided on the converter 70. It is set up.

Furthermore, a plug 102 provided at one end of a connection cable 101 as shown in FIG. 4 is attached to the output connector 73, and the signal from the output connector 73 is supplied to the receiver. It is becoming more and more.

In such an antenna device, when adjusting the elevation angle of the reflecting mirror 60, the bolts 94a, 94b, 99
Loosen a99b and adjust the angle of the converter 70 to the circular arc hole 97.
Move and adjust the range of 98, then tighten the reflector 60 with bolt 9.
Tighten and fix 4a, 94b, 99a, and 99b. To adjust the azimuth, loosen the bolt 100, rotate the connecting member 90 around the ball 80, and then tighten the bolt 100.
Tighten and fix to the ball 80.

According to such an antenna device, the connecting member 90 for connecting the converter 70 and the ball 80 can be integrally formed by press working or the like, so the number of parts can be reduced compared to the conventional example shown in FIG. possible and the structure is simple.

FIGS. 5 and 6 are an exploded perspective view and an assembled perspective view showing another embodiment of the present invention.

In this embodiment, the present invention is applied to a planar antenna device, and a U-bolt is used as a means for fixing a ball to a connecting member.

As shown in FIG. 5, the planar antenna device includes a planar antenna 111, a converter 121 that processes electrical signals from the planar antenna 111, and this converter 12.
1 and a ball 141, and upper and lower U-bolts 151 and 161 that attach the ball 141 to the linking member 131.

The converter 121 has a cylindrical shape, and the planar antenna 111 is attached to one end via a metal fitting 122, and the output connector 12 is attached to the other end.
There are 3.

The connecting portion 131 is a metal plate formed into a U-shape by bushing, and a side plate 133134 for attaching the converter 121 is integrally formed at one end of the U-shaped portion 132. These side plates 133 and 134 have bolts 1
Through hole 13 for inserting 37a and 137b
5, 136, and this through hole 135136
The bolts 137 a and 137 b inserted into the converter 121 are screwed into the female threaded portion 124 (not shown on the right side) of the converter 121 .

Further, arc holes 138 are provided in the side plates 133 and 134, respectively.
139 is formed, and bolts 140a, 14
0b passes through these circular arc holes 138 and 139, and is screwed into a female threaded portion 125 (not shown on the right side) of the converter 121.

The U-shaped portion 132 of the connecting portion 131 has a U-shaped portion for fixing the ball.
Through hole 171 into which one end and the other end of bolt 151 are screwed
171 is formed, and a through hole 172° 172 into which one end and the other end of the U bolt 161 are screwed is formed.

The U-bolts 151 and 161 are formed in a U-shape with the same curvature as the outer circumference of the ball, and when fitted to the outer circumference of the ball 141, the through holes 171 and 172 are formed, and a nut 173 is attached to the protruding bolt end. . This nut 1
By tightening 73, the U-shaped portion 132 is fixed to the ball 141, as shown in FIG.

According to the embodiment described above, the metal fitting 45 (see FIG. 10) can be omitted compared to the conventional example shown in FIG.
Since it is located behind 1, there is a large space for joining cables, and work efficiency is improved.

FIGS. 7 and 8 are an exploded perspective view and an assembled perspective view showing another embodiment of the present invention.

In FIG. 7, a planar antenna 161, a converter 162, and a ball 163 of the antenna device have the same configuration as the conventional example shown in FIG. As a means, a U-shaped connecting member 164 is used, and the connecting member 164 is attached to the ball 163 using U bolts 165, 166 and a plurality of nuts 167. The structure for attaching the converter 162 to the connecting member 164, as shown in FIG. 8, is similar to the conventional example shown in FIG. 11.

According to such a structure, the metal fitting 45 (see FIG. 10) can be omitted compared to the conventional example shown in FIG. 9, and the compactness of the antenna device is not impaired.

[Effects of the Invention] As explained above, according to the present invention, the number of parts of the antenna device can be reduced and the structure can be simplified.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the antenna device according to the present invention, FIG. 2 is a perspective view of the antenna device in FIG. 1 in an assembled state, and FIG. 3 is an enlarged view of the mount part in FIG. 2. figure,
4 is a perspective view of a connection cable used in the antenna device of FIG. 3, FIG. 5 is an exploded perspective view showing another embodiment of the antenna device of the present invention, and FIG. 6 is a perspective view of the antenna device of FIG. 5. FIG. 7 is an exploded perspective view showing another embodiment of the antenna device of the present invention in an assembled state; FIG. 8 is a perspective view of the antenna device in FIG. 7 in an assembled state;
The figure is a perspective view showing a conventional antenna device, and FIG.
FIG. 11 is a perspective view of another conventional antenna device, and FIG. 12 is a sectional view of the antenna device of FIG. 11. 60.Reflector, 70.Converter, 80.Ball, 90.Connecting member, 71.Primary radiator, 98.Archive hole, 100.Volt. Agent Patent Attorney Norio Chika Kensuke) Tsukasa Uji HiroshiFigure 2Figure 3Figure 4Figure 6Figure 7Figure 10 Country 1I I! 1 Figure 12

Claims (1)

[Scope of Claims] An antenna that receives radio waves from a satellite and converts them into electrical signals; a converter that is housed in a housing and is attached to the antenna and receives electrical signals from the antenna; and the antenna is attached. a ball that supports the converter; and a means for connecting the converter and the ball, wherein an upper part is provided with a member that supports the converter so as to be rotatable in the vertical direction about a reference point, and a lower part is provided with a member that supports the converter so as to be rotatable in the vertical direction, and a ball is provided in the lower part. An antenna device comprising: a connecting member provided with a cylindrical or frame-shaped member that engages with the converter and rotatably supports the converter in the left-right direction about the pole axis.