JP2618141B2 - Receiving antenna - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving antenna for satellite broadcasting or communication satellites.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional satellite broadcasting receiving antenna includes a satellite 1 having a parabolic or flat antenna 2 whose azimuth and elevation are properly adjusted, and a supporting column 3 as shown in FIG.
There is something that is made to support. In the case of a flat antenna, the diameter D is as shown in FIGS.
In 10 mm, to form a receiving coil 5 formed by winding a conductor in 1 _^1/6-turn so that the height H ₁ is 4 mm, the receiver coil 5
Between the metal plates 6 and 7 as shown in FIGS.
More than 60 are arranged to collect radio waves from the lower part of the metal plate 6.

[0003]

However, conventionally, it is important to correctly point the antenna to the satellite even in the case of the parabolic type, including the flat type antenna shown in FIGS. Therefore, when the antenna is installed on the wall, roof surface or veranda, etc. that compose the house, the antenna is oriented at its own azimuth (220.9 to 216.2 ゜ in Japan) and elevation (29.1 to 53.6 ゜ in Japan). In addition, the wind pressure, snowfall, accumulation of garbage, and other factors of reception impediment also increased, and it was difficult to say that this was a preferable form from the viewpoint of the house landscape and balance.

[0004] In view of the above problems, the present invention has been developed in consideration of wind pressure, snow cover,
It is an object of the present invention to provide a satellite broadcasting antenna having a small form of reception obstruction such as accumulation of garbage and a preferable form in view of a house and a balance.

[0005]

The technical solution of the present invention for solving this technical problem is to provide a pair of metal plates 16 and 17.
And a large number of spheres 19 having a receiving coil 20 provided therein.A large number of spheres 19 are sandwiched between the pair of metal plates 16 and 17, and each sphere 19 is rolled between the metal plates 16 and 17. One metal plate 17 is connected to the other metal plate 16 so that the orientation of the receiving coil 20 of each sphere 19 can be variably adjusted.
Is movable in the direction of the plate surface with respect to the inner surface of the sphere 19,
An internal conductor 23 is provided so as to be connected to the receiving coil 20,
On the outer surface of the sphere 19, on the side of the other metal plate 16, an external conductor
24, the inner conductor 23 and the outer conductor 24 are connected to each other, and a connection conductor 27 is provided on the surface of the other metal plate 16 on the sphere 19 side so as to contact the outer conductor 24. The point is that a current collecting cable 28 is connected to the conductor 24.

[0006]

When mounting the antenna on a veranda or the like, as shown in FIG. 6, by moving one metal plate 17 in the direction of the plate surface, a number of spheres 19 roll simultaneously between the metal plates 16 and 17, and each sphere 19 The direction of the 19 receiving coils 20 is variably adjusted, so that each receiving coil 20 can be correctly oriented toward the satellite. Therefore, it is not necessary to adjust the azimuth and the elevation angle of the antenna itself, it is sufficient to simply mount and fix it on a veranda or the like, and the antenna can be easily and reliably attached to the veranda or the like.

[0007] Even if the sphere 19 rolls between the metal plates 16 and 17, the outer conductor 24 is connected to the connection conductor 27 as shown in FIG.
, But to maintain contact,
The receiving coil 20 includes an inner conductor 23, an outer conductor 24, and a connection conductor 27.
Maintain the state connected to the current collecting cable 28 through
At this time, the current collecting cable 28 is not pulled by the receiving coil 20 to the sphere 19, and there is no fear that the current collecting cable 28 is cut or a contact failure occurs.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the illustrated embodiment. In FIGS.
A box shape having a circular bottom wall portion 12, a side wall portion 13 rising from the outer periphery of the bottom wall portion 12, and an upper wall portion 14 inclined upward inward at an angle of 30 ° to 35 ° from the upper end of the side wall portion 13. The case 11 is provided with a circular opening 15 at the upper end thereof. 16 is a lower metal plate made of duralumin etc.
It is stored and fixed at the bottom of 11. Reference numeral 17 denotes an upper metal plate made of duralumin or the like, which is arranged so as to cover the opening 15 of the antenna case 11.

In FIGS. 1 to 3, reference numeral 19 denotes a sphere, which is disposed in large numbers on a lower metal plate 16, and an upper metal plate 17 is placed on each sphere 19 to form a pair of metal plates 16,1.
Many spheres 19 are sandwiched between the seven. The receiving coil 20 is housed in each sphere 19, and is fixed to the inner surface of the sphere 19 with an adhesive or the like. The receiving coil 20 has, for example, a diameter D
1 _^1/6 conductors so but the height H ₁ becomes about 4mm at 10mm
It consists of winding. The upper metal plate 17 is movable in the plate surface direction with respect to the lower metal plate 16, that is, in the X-axis and Z-axis directions shown in FIG. 1, and by moving the upper metal plate 17 in the plate surface direction, Sphere 19 on metal plate 16,1
The direction of the receiving coil 20 of each sphere 19 can be variably adjusted by rolling between the spheres.

An inner conductor 23 is bonded to the inner surface of each sphere 19,
When the lower end of the receiving coil 20 comes into contact with the inner conductor 23, the inner conductor 23 is connected to the receiving coil 20. An outer conductor 24 is adhered to the lower metal plate 16 side of the outer surface of the sphere 19, and the inner conductor 23 and the outer conductor 24 are connected to each other by a connection conductor 25 penetrating through the sphere 19. An insulating material 26 is fixed on the upper surface of the lower metal plate 17 over substantially the entire surface, and a connection conductor 27 is fixed on the insulating material 26 in correspondence with the external conductor 24 of each sphere 19. The connection conductor 27 and the outer conductor 24 have a size that covers the rolling range of the sphere 19,
The connection between the connection conductor 27 and the external conductor 24 is always maintained regardless of the rolling of the sphere 19. This outer conductor 24
The current collecting cable 28 is connected to the lower metal plate 16 in the thickness direction, taken out from the lower surface, and connected to a converter (not shown).

A fixed coil 31 is provided around the metal plates 16 and 17 in the antenna case 11 over the entire circumference, and each fixed coil 31 extends outward on the lower surface of the upper wall portion 14 of the antenna case 11. The azimuth of each fixed coil 31 is sequentially changed by a small angle. The received signal of each fixed coil 31 is input to the control unit 32 shown in FIG. The control unit 32 controls the stepping motors 33 and 34 shown in FIGS. 4 and 5, and controls the upper metal plate 17 to maximize the reception gain of the receiving coil 20 by controlling the stepping motors 33 and 34. Move to become. That is, the stepping motor 33 moves the upper metal plate 17 in the X-axis direction via the link mechanism 35 by forward / reverse drive, and the stepping motor 34 moves the upper metal plate 17 via the link mechanism 36 via the link mechanism 36 by forward / reverse drive. The control unit 32 drives the stepping motors 33 and 34 to move the upper metal plate 17 in the direction of the fixed coil 31 having the maximum gain of reception among the fixed coils 31. When the reception gain of each reception coil 20 becomes maximum, the driving of the stepping motors 33 and 34 is stopped, whereby the reception coil 20 of each sphere 19 is automatically adjusted in the direction of the satellite.

FIG. 12 shows a comparative example with the present invention.
While inserting the current collecting cable 28 into the lower metal plate 16 through the insertion hole 41, and inserting the current collection cable 28 into the sphere 19 through the insertion hole 42,
The current collecting cable 28 is directly connected to the end of the receiving coil 20. In this case, the upper metal plate 17 is moved in the plate surface direction as shown in FIG.
When the direction of the receiving coil 20 is adjusted, the current collecting cable 28 is pulled toward the receiving coil 20 to the sphere 19 side as the sphere 19 rolls.
However, there is a high possibility that the wire may be disconnected or damaged, or a contact failure may occur.

The receiving antenna according to the present invention is not limited to a satellite broadcasting receiving antenna, and can be applied to other receiving antennas for communication satellites.

[0014]

According to the present invention, a pair of metal plates 1
6, 17 and a number of spheres 19 having a receiving coil 20 provided therein, and a number of spheres between the pair of metal plates 16, 17 are provided.
One metal plate 17 is fixed to the other metal plate 16 so that each sphere 19 is rolled between the metal plates 16 and 17 so that the direction of the receiving coil 20 of each sphere 19 can be variably adjusted. On the other hand, since it is free to move in the direction of the plate surface, by moving one metal plate 17 in the direction of the plate surface, each receiving coil can be correctly oriented toward the satellite. The antenna can be mounted and fixed on the veranda or other places, which increases the factors of reception obstruction such as wind pressure, snowfall, accumulation of garbage, and becomes a favorable form from the viewpoint of housing landscape and balance. . In addition, the direction of the receiving coil can be easily adjusted by moving one of the metal plates 17, and the mounting and the direction of the antenna can be easily and reliably adjusted.

An inner conductor 23 is provided on the inner surface of the sphere 19 so as to be connected to the receiving coil 20, and an outer conductor 24 is provided on the outer surface of the sphere 19 on the other metal plate 16 side. And the external conductor 24 are connected to each other, and a connection conductor 27 is provided on the surface of the other metal plate 16 on the sphere 19 side so as to contact the external conductor 24.
Since the current collecting cable 28 is connected to the
Due to the rolling of the sphere 19 when the direction of the sphere 20 is variably adjusted, the current collecting cable 28 is not pulled toward the receiving coil 20 or the sphere 19 side, and the receiving coil 20 is an internal conductor.
23, current collecting cable by outer conductor 23 and connecting conductor 27
Because it is kept connected to the sphere 28, the radio waves received by the receiving coil 20 are collected without the current collecting cable 28 being cut or poor contact despite the rolling of each sphere 19. Can be reliably transmitted to the communication cable 28.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing one embodiment of the present invention.

FIG. 2 is a plan view.

FIG. 3 is a side sectional view.

FIG. 4 is a plan view.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a side sectional view for explaining the operation.

FIG. 7 is a perspective view showing a conventional example.

FIG. 8 is a plan view of a receiving coil.

FIG. 9 is a side view of the receiving coil.

FIG. 10 is a side view showing a conventional example.

FIG. 11 is a plan view.

FIG. 12 is a side sectional view showing a comparative example with the present invention.

FIG. 13 is a side sectional view showing a comparative example with the present invention.

[Explanation of symbols]

 16 Lower metal plate 17 Upper metal plate 19 Sphere 20 Receiving coil

Claims (1)

(57) [Claims] A pair of metal plates (16), (17), and a number of spheres (19) provided with a receiving coil (20) therein, between the pair of metal plates (16), (17). A large number of spheres (19) are sandwiched, and each sphere (19) is rolled between metal plates (16) (17) so that the orientation of the receiving coil (20) of each sphere (19) can be variably adjusted. In addition, one metal plate (17) is movable in the plate surface direction with respect to the other metal plate (16), and a sphere (19)
On the inner surface of the inner conductor (2), connect to the receiving coil (20).
3) provided with the other metal plate on the outer surface of the sphere (19)
On the (16) side, an outer conductor (24) is provided, and the inner conductor (23) is provided.
And the external conductor (24) are connected to each other, and on the surface of the other metal plate (16) on the sphere (19) side, a connection conductor (27) is provided so as to contact the external conductor (24), Outer conductor (24)
A receiving cable (28) is connected to the receiving antenna.