JPH04304005A - Antenna system - Google Patents

Abstract

PURPOSE:To realize the antenna system in which assembling adjustment is facilitated. CONSTITUTION:Rough adjustment is implemented in the azimuth direction by a 1st stationary part 3, and then fine adjustment is implemented by a 2nd stationary part 4, the rough adjustment is implemented in the elevating angle direction by selecting a mount position of a jack 8 toward an antenna support member 5 and fine adjustment is implemented by the adjustment of the jack 8 itself. Thus, the assembling adjustment time is reduced by the selection and rotation of the mount part.

Description

[Detailed description of the invention]

[Purpose of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device suitable for use on, for example, a vehicle.

0002

[Prior Art] For example, parabolic antennas are used to communicate with artificial satellites, but to take advantage of satellite communications, earth stations often carry antenna devices such as parabolic antennas on vehicles and move around with them. It is possible to assemble, adjust, send and receive at any time and place.

[0003] Conventional mobile antenna devices include those that are fixedly mounted on a vehicle, and those that are disassembled into main constituent units and mounted on the vehicle, and then installed at the destination. Some are assembled and installed on the ground. However, the problem with any antenna device is how to quickly assemble and adjust it on the spot and timely point the antenna in the direction of a specific satellite and make it ready for communication.
The challenge was to shorten the assembly time as well as the time to adjust the antenna's azimuth and elevation angles. Therefore, conventional antenna devices read the direction of the antenna using an electrical rotation angle.
The angle was adjusted using the rotational driving force of the motor. However, with such an antenna device, it is necessary to set a reference value for angle adjustment each time, which is troublesome.
Since it has a complicated structure that uses a motor drive mechanism, it has the drawback of being prone to failure, and improvements have been desired.

0004

[Problems to be Solved by the Invention] Conventional antenna devices employ a complicated structure to adjust the pointing direction of the antenna, so they require a lot of time to assemble and adjust, and they also have drawbacks such as being prone to failure. there were.

SUMMARY OF THE INVENTION An object of the present invention is to provide an antenna device that has a simple configuration, allows easy adjustment of the antenna direction, and is suitable for being carried on a vehicle or the like.

[Configuration of the invention]

[0007]

[Means for Solving the Problems] An antenna device according to the present invention includes a rotary table rotatably placed on a fixed table;
a first fixing part that can be roughly adjusted to an arbitrary rotational position while engaging with the rotary base and then tightened and fixed to the fixed base;
a second fixing part that finely adjusts and fixes the relative position between the fixing part and the rotary table; an antenna support member having one end rotatably attached to the rotary table and mounting an antenna and an antenna power supply part; One end of the antenna support member is configured to be selectively attachable and detachable at a plurality of different positions, and the other end is provided with a jack attached to the rotating table.

[0008]

[Operation] In the antenna device according to the present invention, the adjustment of the azimuth direction of the antenna is divided into coarse adjustment by operating the first fixed part and fine adjustment by the second fixed part. Adjustments can be easily and quickly made manually while viewing the monitor screen. In addition, the jack for adjusting and setting the elevation direction of the antenna is installed between the rotary table and the antenna support member, and one end thereof is configured to be selectively attachable and detachable to a plurality of positions on the antenna support member. First, rough adjustment of the elevation angle is performed by selecting and setting that position. Next, since fine adjustment is performed by adjusting the jack itself, it is possible to quickly adjust the angle in the elevation direction through a procedure from coarse adjustment to fine adjustment.

Furthermore, the inclination of the antenna support member can be changed by selecting the mounting position of one end of the jack on the antenna support member side, so that the jack can be folded and stored compactly.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an antenna device according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an antenna device according to the present invention.

That is, a fixing ring 11 having a U-shaped cross section and an annular rail shape is mounted on the fixing base 1, and a table-like rotating base is mounted on top of the fixing ring 11, as shown in FIG. 2 is rotatably mounted. The fixing ring 11 is shown in Figure 3.
As also shown in FIG. 4, the U-shaped opening has a flange 11.
As shown in enlarged view in FIGS. 3 and 4, the mounted rotary table 2 has a flange 11a in the U-shaped upper opening, and has a flange 11a in the circumferential direction of the rotary table 2. A long hole 21 is formed along. The first fixing portion 3 is inserted through the elongated hole 21 and the opening, and the rotary table 2 is configured to be able to select any rotational position. A second fixing part 4 is attached between the first fixing part 3 and the rotary table 2, and is configured so that the relative position can be finely adjusted.

Further, as shown in FIG. 1, an antenna support member 5 is attached to the rotary table 2, and an antenna 6 and an antenna power supply section 7 are mounted on the antenna support member 5. The antenna support member 5 is rotatably attached at one end to the column 22 on the rotary table 2, and has a plurality of (three in this embodiment) fixing metal fittings 51 (in this embodiment, three pieces) pointing downward at different positions along its length. 51a, 51b, 51c) are provided.

To explain in detail the angle adjustment in the azimuth direction of the antenna, as shown in FIG. 3 and FIG. The screw rod 32 is inserted all the way into the screw rod 32, and a fastening metal fitting 33 at the tip thereof is configured to be able to move up and down without rotating as the threaded rod 32 rotates. Furthermore, since an annular tightening plate 34 that is in contact with the top surface of the fixing ring 11 is attached to the threaded rod 32, when the knob 31 is rotated to the right, the threaded rod 32 rotates and tightens along the thread. The metal fitting 33 rises, and the collar portion 11a is held between the fastening metal fitting 33 and the fastening plate 34.

A second fixing part 4 is attached between the knob 31 of the first fixing part 3 and the top surface of the rotary table 2. This second fixing part 4 has a function of finely adjusting the relative position between the fixed base 1 and the rotary base 2 set by the first fixing part 3 in the azimuthal and angular direction. That is, the support shaft 41 of the second fixing part 4 is inserted into the threaded rod 32, and the adjustment screw 42 is rotatably connected to the support shaft 41 as shown in FIG. Since it is pivotally supported by a bearing fitting 43 that is also fixedly attached to the rotary table 2, the adjustment screw 4
2 rotates the rotary table 2 in the direction of the elongated hole 21, that is, in the azimuth direction. As a result, by controlling the rotation of the adjustment screw 42, the relative position between the rotary table 2 and the fixed table 1 can be finely adjusted.

As shown in FIG. 2, fixing parts 3' having the same structure as the first fixing part 3 are provided at two locations around the ring base 11. Those fixed parts 3'
is for securely fixing the turntable 1 to the fixed base 2 when the adjustment of the first and second fixing parts 3 and 4 is completed, and 2 is omitted, and the rotary table 2 is also fixed at the same time.

To adjust the angle in the azimuth direction of the antenna device of the present invention, first, with the first fixing part 3 loosened by the knob 31, rotate the rotary base 2, and while watching the monitor image, adjust the angle relative to the fixed base 1. After setting the approximate angle of the rotary table 2 and fixing the first fixing part 3 to the fixing ring 11 by rough adjustment using the knob 31, fine adjustment is made by rotating the adjustment screw 42 of the second fixing part 4. It will be done. Therefore, in the azimuth direction, the antenna pointing direction can be easily and quickly adjusted from coarse adjustment to fine adjustment by operating the first and second fixing parts 3 and 4. The second fixed part 4 was attached to the first fixed part 3 so as to move along the long hole 21 of the rotary table 2, but in short, the first solid part 3 was moved along the long hole 21. For example, as shown in FIG.
It may also be installed so that it moves parallel to the

Next, the angle adjustment in the elevation direction of the antenna device will be explained in detail. As shown in FIG. 1, the antenna support member 5 is provided with three fixing fittings 51 (51a, 51b, 51c) facing downward at different positions in the length direction. One end of the jack 8 is configured to be detachably attached, and the other end of the jack 8 is rotatably attached to the stopper 23 of the rotating table 2. Since the plurality of fixing fittings 51 are provided at intervals along the length direction of the antenna support member 5, if the length of the jack 8 is now constant, the antenna can be fixed by selecting the plurality of fixing fittings 51. The inclination of the support member 5 changes stepwise, and the elevation directivity angle of the antenna 6 changes roughly. That is, by selecting the fixture 5 with which the jack 8 engages, the elevation angle of the antenna 6 changes stepwise, allowing for coarse adjustment. After this rough adjustment, the length of the jack 8 itself can be finely adjusted while looking at the monitor screen, making it possible to adjust the elevation angle with high accuracy.

As described above, in the antenna device according to the present invention, the jack 8 installed between the rotary table 2 and the antenna support member 5 and adjusting and setting the elevation angle direction of the antenna 6 is
Since one end of the antenna support member 5 is configured to be selectively attachable to and detachable from a plurality of positions, by selecting one of them, a rough adjustment of the elevation angle is first performed, and after the coarse adjustment, the elevation angle is roughly adjusted. Since fine adjustment is performed by adjusting the jack 8, rapid adjustment from coarse adjustment to fine adjustment is also possible in the elevation angle direction.

As shown in FIG. 6, by selecting the mounting position of the jack 8, for example, by selecting the farthest fixture 51c from the stopper 23, the antenna support member 5 can be placed in a nearly horizontal state, and the overall volume can be reduced. It is small and compactly stored, making it convenient for transportation. Further, in this case, the screw 52 in the antenna support member 5 can be removed and the antenna power feeding section 7 can also be folded and stored.

As described above, the present invention can provide an antenna device with a simple configuration that is easy to assemble and adjust, and is convenient for use when mounted on a vehicle or the like.

[0021]

The antenna device according to the present invention has a simple structure and is easy to assemble and adjust, and can be used as a satellite communication antenna with remarkable effects.

[Brief explanation of the drawing]

FIG. 1 is a side view of an antenna device according to the invention.

FIG. 2 is an enlarged perspective view of a fixed table and a rotary table of the apparatus shown in FIG. 1;

FIG. 3 is an enlarged cross-sectional view of the main part of the apparatus shown in FIG. 2 taken along line A-A.

FIG. 4 is an enlarged cross-sectional view of the main part of the device shown in FIG. 2 taken along line BB.

FIG. 5 is a plan view showing another attachment state of the second fixing part of the antenna device shown in FIG. 1;

FIG. 6 is a side view of the device shown in FIG. 1 in a folded state;

[Explanation of symbols]

1...Fixed stand 2... Rotating table 3...First fixed part 4...Second fixed part 5...Antenna support member 6...Antenna 7...Antenna power supply section 8...Jack

Claims (1)

[Claims] 1. A rotary table rotatably placed on a fixed table, and a first fixing member that engages with the rotary table and can be roughly adjusted to an arbitrary rotational position and then tightened and fixed to the fixed table. Department and
a second fixing part that finely adjusts and fixes the relative position of the first fixing part and the rotary table; and an antenna support having one end rotatably attached to the rotary table and mounting an antenna and an antenna power feeding part. An antenna device comprising: a member; and a jack, one end of which is configured to be selectively attachable and detachable at a plurality of different positions of the antenna support member, and the other end of which is attached to the rotary table. .