JPH09148818A - Driving device of tracking antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving device which is excellent in accuracy and inexpensive even when the automatic tracking operation of a tracking antenna for receiving the radio waves of a satellite broadcasting is performed only by an azimuth direction. SOLUTION: A rotational frame 2 on which a plane antenna 11 and a motor 10 for azimuth adjustment are mounted is freely rotatably supported with a rotary shaft part 3 for azimuth adjustment as a center. The plane antenna 11 is freely rotatably supported by a supporting base 13 in an elevation direction with a rotary shaft part 12 for elevation adjustment as a center. The rotational force in the elevation direction is added so that an antenna surface may be turned up by a spring 14. The upper end part of the plane antenna 11 is provided with a supporting part 15. The whole of the device of the constitution is covered with a radome 16. In the radome, a conical movable table 17 whose height is variable in the vertical direction is provided coaxially with the rotary shaft part 3 for azimuth adjustment. The height of the movable table 17 can be adjusted by a manual rotation operation of the handle 19 having a screw axis 18. In this case, the supporting part 15 is arranged so as to be supported along the upper surface of the movable table 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device for a tracking antenna used for receiving satellite broadcast radio waves and communication radio waves on a moving body such as an automobile.

[0002]

2. Description of the Related Art Conventionally, as a drive device for a tracking antenna used for receiving satellite broadcast radio waves on a moving body such as an automobile, disclosed in Japanese Patent Application Laid-Open No. 4-359304 previously filed by the present applicant. There is something to be done. This is a plane antenna,
An elevation angle adjusting motor for rotationally driving the plane antenna around the elevation angle rotating shaft portion to adjust the elevation angle of the plane antenna,
A rotating frame that mounts a plane antenna and a motor for adjusting the elevation angle and rotates around the rotating shaft for adjusting the azimuth angle, and an azimuth angle adjustment that drives the rotating frame to adjust the azimuth angle of the plane antenna. Motor, and a fixed base on which the rotating frame is mounted to rotatably support the rotating frame, and the drive of the elevation angle adjusting motor and the azimuth adjusting motor is constantly controlled to control the planar antenna. The posture is controlled.

The driving device for the tracking antenna is mounted on the moving body by a mounting plate for mounting on the moving body such as an automobile. Further, the entire driving device for the tracking antenna shields flying objects, rain and wind, etc. It is covered by a radome for low radio wave transmission loss.

[0004]

However, in the tracking antenna driving device having the above-described structure, the attitude of the plane antenna is always controlled by the elevation angle adjusting motor and the azimuth angle adjusting motor in order to track the satellite. Therefore, two motors and a control circuit unit for controlling them have been required.

The present invention has been made in view of the above points, and it is an object of the present invention to perform an automatic tracking operation of a tracking antenna for receiving satellite broadcast radio waves only in the azimuth direction. Another object of the present invention is to provide a highly accurate and inexpensive tracking antenna driving device.

[0006]

According to the first aspect of the present invention,
A planar antenna, an elevation angle adjusting rotary shaft portion that pivotally supports the planar antenna in the elevation angle direction, and an azimuth angle adjusting pivot shaft portion that pivotally supports the planar antenna in the azimuth angle direction. And a rotating frame for mounting the planar antenna and rotating around the rotating shaft for adjusting the azimuth angle, and for adjusting the azimuth angle of rotating the rotating frame for adjusting the azimuth angle of the planar antenna. A tracking antenna driving device having a motor and a fixed base on which the rotating frame is mounted to rotatably support the rotating frame, and the entire structure is covered with a cover, in which the cover is provided. A movable base having a variable height, and an adjusting unit exposed to the outside of the cover and adjusting the height of the movable base are added, and the end of the planar antenna extends along the upper surface of the movable base. The support part that is movably supported by adding the adjustment part. By changing the height of the movable table to work, it is characterized in that to adjust the elevation of the planar antenna.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic cross-sectional view of a driving device for a tracking antenna according to an embodiment of the present invention as seen from a side, and FIG. 1A shows a state in which a movable table 17 is lowered,
(B) shows a state in which the movable table 17 is raised. FIG.
FIG. 3 is a schematic view of the tracking antenna driving device according to the present embodiment as seen from the rear side with the radome 16 removed, and FIG.
4 is a plan view of the tracking antenna driving device according to the present embodiment as seen from above with the radome 16 removed, and FIG.
Shows the entire configuration of the tracking antenna driving device of the present embodiment, (a) is a plan view, and (b) is a schematic sectional view.

An annular fixed base 1 arranged in the center
On the upper side, a flat plate-shaped rotating frame 2 formed of sheet metal
The rotating frame 2 is configured to be rotatable around the azimuth angle adjusting rotating shaft portion 3. A circular opening 4 is opened in the center of the rotating frame 2, and a rotating base 5 is provided on the lower surface side of the edge of the opening 4 with a fixed base 1.
It is mounted rotatably via a bearing 6. A support pillar 7 is provided upright on the upper surface side of the opening 4 edge, and a brush 8 is attached to the support pillar 7. A slip ring 9 is provided so as to project upward from the fixed base 1 so that the center thereof is located on the azimuth adjusting rotary shaft portion 3, and the brush 8 is slidably brought into contact with the slip ring 9. Then, the electric power supplied from the power cord is passed through the slip ring 9 to the brush 8
Can be sent to.

An azimuth adjusting motor 10 is mounted on the rotating frame 2, and the azimuth adjusting motor 10 is rotated to drive the rotating frame 2 so that the azimuth can be adjusted. It has become.

The plane antenna 11 is supported by a support base 13 so as to be rotatable in the elevation angle direction about an elevation angle adjusting rotation shaft portion 12. Further, the planar antenna 11 is applied with a rotational force in the elevation angle direction by the spring 14 so that the antenna surface faces upward. A support portion 15 is provided on the upper end of the planar antenna 11 so as to be supported along the upper surface of a moving table 17, which will be described later, and the entire driving device for the tracking antenna is covered with a radome 16.

The radome 16 is provided with a frusto-conical moving base 17 whose height can be changed in the vertical direction and the axis of which is the same as that of the azimuth adjusting rotary shaft 3, and the moving base 17 is a screw. The height can be adjusted by manually rotating the handle 19 including the shaft 18.

In general, since the plane antenna 11 has a wide directivity in the elevation angle direction, it is not necessary to constantly move the elevation angle adjusting motor (not shown). If the optimum elevation angle setting is made in the area, the automobile etc. The slope of the vehicle at the time of turning or turning does not affect the reception of satellite broadcast waves.

Therefore, in this embodiment, the screw shaft 1
The height of the movable base 17 is adjusted by manually rotating the handle 19 including the movable base 17, and the height of the support portion 15 supported along the upper surface of the movable base 17 is changed accordingly. The upper end of 11 is pushed up or pulled downward by the spring 14. That is, by changing the height of the movable table 17, the planar antenna 1
The elevation angle of 1 can be adjusted.

In this embodiment, the moving table 17
Although a truncated cone shape is used as the above, the shape is not limited to this, and the shape of the moving table 17 can be changed along the upper surface of the moving table 17 by changing the height of the moving table 17. Any shape may be used as long as the height of the supporting portion 15 to be supported is changed. For example, the surface on which the supporting portion 15 is supported may be curved or stepped, or the movable table 17 may be flat. The part 15 may be constantly supported on the upper surface of the movable table 17.

[0015]

According to the first aspect of the present invention, the plane antenna, the elevation angle adjusting pivot portion for pivotally supporting the plane antenna in the elevation angle direction, and the plane antenna in the azimuth angle direction are rotatable. Azimuth adjusting pivot for pivoting, a pivot frame for mounting the plane antenna to pivot around the pivot for adjusting the azimuth, and a pivot frame for pivoting the plane antenna. Driving a tracking antenna that has an azimuth adjusting motor that adjusts the angle and a fixed base that mounts a rotating frame and rotatably supports the rotating frame, and is entirely covered with a cover. In the device, the cover is provided with a movable base whose height is variable and an adjusting unit which is exposed to the outside of the cover and which adjusts the height of the movable base. Since the support part that is supported so as to be movable along is added, the adjustment part can be operated. By changing the height of the moving table by using this, the height of the support that moves along the upper surface of the moving table can be changed, and the elevation angle of the planar antenna will be adjusted accordingly. If you adjust the height of the table and adjust the optimal elevation angle in that area, it is accurate even when the automatic tracking operation of the tracking antenna for satellite broadcast reception is performed only in the azimuth direction, In addition, it is possible to provide an inexpensive tracking antenna drive device.

[Brief description of the drawings]

1A and 1B are schematic cross-sectional views of a driving device for a tracking antenna according to an embodiment of the present invention as seen from a side, where FIG. 1A is a state in which a movable table is lowered, and FIG. It is in a state.

FIG. 2 is a schematic view of the tracking antenna driving device according to the present embodiment as seen from the rear side with the radome removed.

FIG. 3 is a plan view of the tracking antenna driving device according to the present embodiment seen from above with the radome removed.

4A and 4B show an overall configuration of a tracking antenna driving device of the present embodiment, FIG. 4A is a plan view, and FIG. 4B is a schematic sectional view.

[Explanation of symbols]

 1 Fixed Base 2 Rotation Frame 3 Azimuth Adjustment Rotation Shaft 4 Opening 5 Rotation Base 6 Bearing 7 Support Pillar 8 Brush 9 Slip Ring 10 Azimuth Adjustment Motor 11 Planar Antenna 12 Elevation Adjustment Rotation Shaft 13 Support Base 14 Spring 15 Support 16 Radome 17 Moving Base 18 Screw Shaft 19 Handle

Claims (1)

[Claims] 1. A planar antenna, an elevation angle adjusting rotation shaft portion that pivotally supports the planar antenna in the elevation angle direction, and an azimuth angle adjustment that pivotally supports the planar antenna in the azimuth angle direction. Rotating shaft part, and a rotating frame that mounts the planar antenna and rotates about the azimuth angle adjusting rotating shaft part.
An azimuth angle adjusting motor for rotating the rotating frame to adjust the azimuth angle of the planar antenna, and a fixed base for mounting the rotating frame and rotatably supporting the rotating frame are provided. In a tracking antenna driving device having a structure in which the whole is covered with a cover, a movable base having a variable height is provided on the cover, and adjustment for exposing the outside of the cover and adjusting the height of the movable base. And a support portion movably supported along the upper surface of the movable table at the end of the planar antenna, and operating the adjusting portion to change the height of the movable table. The tracking antenna drive device is characterized in that the elevation angle of the planar antenna is adjusted.