JPH09148817A - Driving device of tracking antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving device which is excellent in accuracy and is inexpensive also when the automatic tracking operation of a tracking antenna for receiving a satellite broadcasting radio waves is performed by only an azimuth direction. SOLUTION: A rotation frame 2 on which a plane antenna 11 and a motor 10 for azimuth adjustment are mounted is supported freely rotatably on a fixed base 1 with a rotary shaft part 3 for azimuth adjustment as a center. The plane antenna 11 is supported freely rotatably in elevation direction by a supporting base 13 with a rotary shaft part 12 for elevation adjustment as a center. At the inside of a slip ring 9, a first pulley 17 and a second pulley 18 are provided and these two pulleys synchronize and rotate by a belt 19. A third pulley which is coaxial with the second pulley and rotates by synchronizing with the second pulley is provided. By a belt 21, the third pulley rotates by synchronizing with elevation axis pulley 14. The first pulley 17 is connected with a handle 16 and the handle 16 is composed to be exposed from the fixed base 1.

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 which is entirely covered with a cover. A manual elevation angle adjustment unit for adjusting the elevation angle of the device and a power transmission unit for rotating the planar antenna in the elevation direction by operating the elevation angle adjustment unit are added, and the elevation angle adjustment unit is provided with the cover or the fixed base. From either It provided by out is characterized in.

According to a second aspect of the present invention, in the tracking antenna driving device according to the first aspect, a pulley is used as the power transmission section.

[0008]

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 tracking antenna driving device according to an embodiment of the present invention seen from a side with a radome 22 removed, and FIG. 2 is a tracking antenna driving device according to the present embodiment. FIG. 4 is a schematic cross-sectional view as seen from the rear side with the radome 22 removed, FIG. 3 is a plan view of the tracking antenna drive device according to the present embodiment with the radome 22 removed, and FIG. The whole structure of the drive device of the tracking antenna which concerns on a form is shown, (a) is a top view, (b) has shown a schematic sectional view. A flat plate-shaped rotating frame 2 formed of a metal plate is arranged on an annular fixed base 1 arranged at the center, and the rotating frame 2 is a rotating shaft for adjusting an azimuth angle. It is configured to be rotatable around the portion 3. A circular opening 4 is formed in the center of the rotating frame 2, and a rotating base 5 is rotatably mounted on a fixed base 1 via a bearing 6 on the lower surface side of the opening 4 edge. There is. 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 hollow cylindrical 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. The brush 8 is slidably brought into contact with the slip ring 9. is there. The power supplied from the power cord can be sent to the brush 8 via the slip ring 9.

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, an elevation angle shaft pulley 14 which is coaxial with the elevation angle adjusting rotation shaft portion 12 and is similar to the elevation angle rotation is connected to the planar antenna 11.

Here, as a means for transmitting a manual turning force for adjusting the elevation angle, the handle 1 rotatably supported on the lower portion of the support plate 15 disposed inside the slip ring 9.
6, a first pulley 17 connected to the handle 16,
An elevation angle adjusting rotation shaft portion 12 and a second pulley 18 supported by the support column 7 so as to rotate the shaft in parallel are provided, and the first pulley 17 and the second pulley 18 rotate in synchronization. It is connected by a belt 19 so that Further, a third pulley 20 that is coaxial with the second pulley 18 and that rotates in synchronization is provided, and the third pulley 20 is connected by a belt 21 so as to rotate in synchronization with the elevation shaft pulley 14. There is. And the whole drive device of the tracking antenna is
It is covered by the radome 22.

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 the present embodiment, the handle 16 is manually rotated so that the turning force is generated by the first pulley 1.
7. Transmitting to the plane antenna 11 via the second pulley 18, the third pulley 20, and the elevation shaft pulley 14 to rotate the plane antenna 11 in the elevation direction to adjust the optimum elevation angle in the area. You can

In the present embodiment, a handle 16 rotatably supported is provided below the support plate 15 disposed inside the slip ring 9, and the handle 16 is operated from the opening of the fixed base 1. Although the elevation angle of the planar antenna 11 is adjusted by doing so, the present invention is not limited to this. For example, as shown in FIGS.
The pulley 17 and the handle 16 may be provided in the vicinity of the radome 22, the opening 23 may be provided in the radome 22, and the handle 16 may be operated through the opening 23 to adjust the elevation angle of the planar antenna 11. At this time, the opening 23
The opening 23 is provided with a lid 24 to prevent rainwater and the like from entering.
Is closed by

[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, a manual elevation angle adjusting unit for adjusting the elevation angle of the plane antenna and a power transmission unit for rotating the plane antenna in the elevation direction by operating the elevation angle adjusting unit are added, and the elevation angle adjusting unit is covered or fixed base. Exposed from either Since it is provided, the elevation angle of the plane antenna can be adjusted by manually operating the elevation angle adjustment unit and transmitting the rotational power to the plane antenna by the power transmission unit. If the elevation angle is adjusted optimally in that area, the tracking antenna with good accuracy and low cost can be obtained even if the automatic tracking operation of the tracking antenna for satellite broadcast reception is performed only in the azimuth direction. A drive could be provided.

According to a second aspect of the present invention, in the tracking antenna driving device according to the first aspect, since the pulley is used as the power transmission unit, the rotational force due to the manual operation of the elevation angle adjusting unit is generated by the pulley. Can be transmitted to.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view seen from a side of a tracking antenna driving device according to an embodiment of the present invention with a radome removed.

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

FIG. 3 is a plan view of the drive device for the tracking antenna according to the present embodiment with the radome removed.

FIG. 4 shows an overall configuration of a tracking antenna driving device according to the present embodiment, (a) is a plan view, and (b) is a schematic cross-sectional view.

FIG. 5 is a schematic cross-sectional view of a driving device for a tracking antenna according to another embodiment of the present invention as seen from the side surface.

FIG. 6 is a schematic cross-sectional view of the tracking antenna driving device according to the present embodiment as seen from the back side.

7A and 7B show an overall configuration of a driving device for a tracking antenna according to the present embodiment, FIG. 7A is a plan view, and FIG. 7B is a schematic sectional view.

[Explanation of symbols]

 1 Fixed Base 2 Rotating 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 elevation shaft pulley 15 support plate 16 handle 17 first pulley 18 second pulley 19 belt 20 third pulley 21 belt 22 radome 23 opening 24 lid

Claims (2)

[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 driving device for a tracking antenna having a structure in which the entire surface is covered with a cover, a manual elevation angle adjusting unit for adjusting the elevation angle of the plane antenna and rotating the plane antenna in the elevation direction by operating the elevation angle adjusting unit. A drive device for a tracking antenna, further comprising a power transmission unit for moving the elevation angle adjusting unit, which is exposed from either the cover or the fixed base. 2. The tracking antenna driving device according to claim 1, wherein a pulley is used as the power transmission unit.