JP2743867B2 - Antenna drive mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna driving mechanism for adjusting the azimuth of a satellite communication antenna with a jack, and more particularly to an antenna driving mechanism capable of easily moving and adjusting a fixing position of a jack fixing portion.

[0002]

2. Description of the Related Art Conventionally, when adjusting the azimuth of an antenna for satellite communication, an antenna is generally installed on a turntable that is rotatable about a rotation axis, and this turntable is extended and retracted by a jack. This is done by driving with.

FIG. 4 shows a driving mechanism of a general antenna of this kind. As shown in FIG. 1, a conventional antenna driving mechanism includes a satellite communication antenna 10 installed on a turntable 11 that rotates about a rotation axis 12, and a turntable 11 having one end fixed to the turntable 11. And a fixing portion 2 for fixing the other end of the jack 1 to a predetermined position. A fixing portion 2 for fixing the other end of the jack 1 is fixed to one of a plurality of fixing bases 3 previously installed at an arbitrary position by a fixing bolt 6.

According to the conventional antenna driving mechanism having such a configuration, the jack 1 fixed at a predetermined position by the fixing portion 2 expands and contracts, so that the antenna 10 expands and contracts about the rotating shaft 12. Driven in the range,
The azimuth can be adjusted arbitrarily. Further, by moving the fixing portion 2 for fixing the jack 1, the antenna can be driven outside the initially set driving range.

When adjusting the azimuth of the antenna outside the initial driving range by moving the fixed part 2, the fixing bolt 6 is loosened to remove the fixed part 2 from the fixed base 3, and then it is desired to move the fixed part 2. This is performed by moving to another fixed base 3 installed at an arbitrary position and fixing it.

Normally, the operation of moving the fixed part 2 is
The fixing portion 2 is lifted and moved by several persons, and is positioned and fixed to the fixed base 3 at the moving destination.

[0007]

However, an antenna for satellite communication is generally very heavy, and a fixing portion for fixing a jack for driving the antenna is also necessarily heavy. For this reason, the movement of the fixed portion for adjusting the driving range of the jack in the above-described conventional antenna driving mechanism is a large operation that requires a lot of manual work.

Further, as shown in FIG. 4, in the conventional antenna driving mechanism, there is no such thing as a handle, a notch or the like for a person to hold and move in the fixed portion, and the fixed portion is not provided. The worker who intends to move is lifted up holding the fixed part, inserting his hand on the bottom, moving it, aligning it with the fixed base of the destination, and carefully lowering it so as not to pinch the hand, That was a very time-consuming task. For this reason, there has been a problem that the working efficiency is extremely poor and the workers are also at risk.

Further, since the positioning of the fixed portion and the fixed base of the moving destination must be performed while holding the heavy-weight fixed portion, it is largely dependent on the visual and intuition of the operator, and accurate positioning is performed. There was also a problem that it became difficult.

In order to avoid such difficulty in adjusting the position of the jack of the conventional antenna drive mechanism, Japanese Utility Model Laid-Open Publication No. Sho 57-115714 discloses a truck (fixing portion) for fixing the jack. There has been proposed an antenna driving device in which a driving range of a jack is adjusted by detachably sliding on a guide rail.

However, in the antenna driving device described in this publication, a guide rail is formed on the same radius around the antenna, so that a certain space is always required for installing the antenna, and the installation layout of the antenna is significantly restricted. There is a problem that space is wasted depending on the driving direction of the antenna.

Also, a main drive mechanism for moving the jack for driving the antenna and an auxiliary drive mechanism for moving the bogie supporting the antenna are required, so that the drive structure becomes complicated.
In addition to the increase in size, there is a problem that it cannot cope with instantaneous movement. Further, since the guide rails also serve as fixing means, the guide rails need to have a certain strength, which complicates the structure of the guide rails and complicates the fixing work.

The present invention has been proposed in order to solve such problems of the prior art, and the fixing position of the jack for driving the antenna can be easily and safely, reliably, and quickly by using only a simple structure. The purpose of the present invention is to provide an antenna drive mechanism that can be moved freely and the installation layout can be freely set.

[0014]

In order to achieve the above object, an antenna driving mechanism according to the present invention is provided on a turntable and rotates a satellite communication antenna about a rotation axis, and an azimuth for rotating the antenna. In an antenna driving mechanism including a jack for adjustment and a fixing portion for fixing a tip of the jack, a bendable arm portion for horizontally supporting the fixing portion is provided rotatably with respect to the fixing portion. There is a configuration.

Preferably, guide means are provided on the fixed portion and the fixed base, and a handle is provided on the fixed portion.

[0016] More preferably, the arm portion is provided with a lifting means for lifting the fixed portion.

[0017]

According to the antenna driving mechanism of the present invention having the above-described structure, the fixed portion is horizontally supported by the arm portion and the arm portion can be bent freely, so that the moving operation of the fixed portion is extremely difficult. The antenna can be easily and safely mounted, and the fixed base can be appropriately arranged at an arbitrary position around the antenna, so that the layout of the antenna can be freely set and no unnecessary installation space is required.

Further, by providing guide means on the fixed portion and the fixed base, the positioning between the fixed portion and the fixed base of the moving destination can be easily performed. Further, by providing the handle, the work can be carried out by simply holding the fixing portion in the hand, so that the work efficiency and safety can be further improved.

Further, by providing the arm with lifting means for lifting the fixed portion, the fixed portion can be lifted very easily, so that the fixed portion can be moved more efficiently and safely.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the antenna driving mechanism according to the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the antenna driving mechanism of the present invention, (a) is a plan view,
(B) is a front view.

In the antenna driving mechanism of the present embodiment shown in FIG. 1, a satellite communication antenna 10 is installed on a turntable 11 that rotates about a rotation shaft 12. A jack 1 for driving the antenna 10 at an azimuth angle is attached to the turntable 11.
Thus, the turntable 11 is driven to rotate in the azimuth direction.

The jack 1 is extendable and contractible in the axial direction, and one side is attached to the turntable 11 so as to be rotatable in the horizontal direction. The other end of the jack 1 is
As will be described later, it is attached to the fixing portion 2 and is fixed by fixing the fixing portion 2 to the fixing base 3.

The mounting portion of the other end of the jack 1 to the fixed portion 2 is rotatable in the horizontal direction similarly to the mounting portion to the turntable 11 on one side. In addition, this jack 1
There is no particular limitation as long as it is a telescopic type. For example, various types such as a turn bag type and a worm wheel type can be used.

The fixing part 2 for fixing the other end of the jack 1
It is fixed to one of a plurality of fixed bases 3 previously set at an arbitrary position near the outer periphery of the turntable 11 by fixing bolts 6.

Further, on the upper surface of the fixing portion 2, an arm portion 4 for always supporting the fixing portion 2 in the horizontal direction is provided.
One end of the arm unit 4 is rotatably attached to the upper surface of the fixed unit 2, and the other end is rotatably attached to a turntable 11 on which the antenna 10 is mounted. The fixed unit 2 is mounted on the fixed base 3. In the absence state, the fixed portion 2 is always supported in the horizontal direction.

As shown in FIG. 1, the arm 4 has a link mechanism in the middle of the longitudinal direction, and can be bent horizontally around the link. Thereby, even if the jack 1 expands and contracts, and the turntable 11 rotates, the arm unit 4 can flexibly follow the movement of the turntable 11.

Further, by making the arm portion 4 bendable at the intermediate portion, the moving range of the fixed portion 2 can be widened to some extent, so that the fixed base 3 is installed at the same radius around the turntable 11. The layout of the fixed base 3 can be freely set without being limited to the above.

Note that the arm 4 and the fixed part 2, the turntable 11
Fig. 1 (b)
As shown in (1), each pin can be freely bent in the horizontal direction by the pin structure. However, other means may be used. For example, a shaft coupling structure using a ball bearing can be used, and in this case, it can be bent not only in the horizontal direction but also in the vertical direction.

Further, a handle 5 for lifting the fixing portion 2 is provided at an end of the arm portion 4 on the fixing portion 2 side. The handle 5 functions as a gripping part for the worker when moving the fixed part 2, and includes a shaft part 5 a protruding vertically from an end of the arm part 4 on the fixed part 2 side, and a work part. The handle portion 5b is formed by bending the distal end side of the shaft portion 5a in the horizontal direction so that a user can hold the shaft portion 5a.

Next, the manner of use of the antenna driving mechanism of the present embodiment having such a configuration will be described. First,
Normally, the fixed part 2 is fixed to a predetermined fixed base 3, one end of which is fixed to the fixed part 2, the jack 1 expands and contracts, drives the turntable 11, and adjusts the azimuth of the antenna 10. I have.

If it is desired to change the azimuth of the antenna 10 out of the driving range of the jack 1 in this state, the following is performed. First, the fixing bolt 6 is loosened or removed, and the fixing portion 2 is held by holding the handle portion 5b of the handle 5 with the hand.

Next, the fixed part 2 held by the hand is
While rotating in accordance with the direction of rotation 1, the user moves the fixed base 3 to be moved. At this time, since the fixing portion 2 is supported in the horizontal direction by the arm portion 4, the operator can easily move the fixing portion 2. Also, the positioning of the fixed portion 2 with the fixed base 3 at the moving
It is easy to do because it is supported.

After the fixed part 2 is moved onto the fixed base 3 at the destination, the handle 5 is operated to move the fixed part 2 to the fixed base 3.
Lower it. Then, after final positioning is performed, the fixing bolt 6 is tightened to complete the fixing.

As described above, according to the antenna driving mechanism of the present embodiment, the fixing portion 2 is supported in the horizontal direction by the arm portion 4 and the arm portion 4 is bendable by the link mechanism. The moving operation of the part 2 can be performed extremely easily and safely, and the fixed base 3 can be appropriately arranged at any position around the antenna, so that the layout for installing the antenna can be freely performed and no unnecessary installation space is required. In addition, by providing the handle 5, the fixing portion can be easily operated, so that the work efficiency and safety can be further improved.

Next, a second embodiment of the antenna driving mechanism of the present invention will be described with reference to FIG. FIG. 2 shows a second embodiment of the antenna drive mechanism of the present invention, (a)
Is a bottom view of the fixing portion, (b) is a plan view of the fixing base,
(C) is a front view of a fixed part and a fixed base.

As shown in these figures, in the present embodiment, guide means are provided on the fixed part 2 and the fixed base 3. That is, as shown in FIG. 2A, a guide pin 2a protrudes from the bottom surface of the fixed portion 2, and as shown in FIG. A guide groove 3a with which the 2a is engaged is formed.

By providing the guide means as described above, the positioning of the fixed portion 2 and the fixed base 3 can be more easily performed, and the labor of the operator during the movement can be greatly reduced. Efficiency and safety can be improved.

The above-described guide means is an example of a preferred embodiment, and is not limited to this as long as it is a guide means for aligning the fixed portion 2 and the fixed base 3. For example, a guide groove may be formed on the fixed portion side, and a guide pin may be protruded from the fixed base side.

Next, a third embodiment of the antenna driving mechanism of the present invention will be described with reference to FIG. FIG. 3 is an enlarged front view of a main part showing a fixing part, an arm part and a handle of a third embodiment of the antenna driving mechanism of the present invention.

As shown in the figure, in this embodiment,
The arm part 4 is configured as a lifting means for lifting the fixed part 2 in the vertical direction. That is, the shaft 5 of the handle 5
In a, a screw which is screwed into the distal end side of the arm portion 4 is formed substantially at the center, and the distal end is fixed to the upper surface of the fixing portion 2 so that it is rotatable in the axial direction.

Thus, the handle portion 5b of the handle 5
Is rotated in the horizontal direction, so that the shaft portion 5a moves up and down around the screw portion with the arm portion 4 with the fixing portion 2.

According to the arm 4 of this embodiment having the above-described structure, the fixed base 2 is freely lifted and lowered by rotating the handle 5b of the handle 5 to move the shaft 5a up and down. be able to.

This eliminates the need for the worker to support the fixed part 2 when raising and lowering the fixed part 2.
By simply operating the handle 5, the fixing part 2 can be easily formed.
Can be moved to another fixed base 3.

As described above, the lifting and lowering work of the fixed part 2 can be performed very easily by using the arm part 4 as the lifting means of the fixed part 2, so that the movement and the fixing work of the fixed part 2 can be performed more efficiently and safely. Can be performed.

In this embodiment, as shown in FIG.
The fixing portion 2 and the fixing base 3 are formed in a hollow frame shape, thereby reducing the weight. As shown in the figure, the end of the jack 1 is pivotally mounted on the side surface of the fixed portion 2 and is rotatable in the horizontal direction.

[0046]

As described above, according to the antenna driving mechanism of the present invention, the fixed position of the jack for driving the antenna can be easily, safely, reliably and quickly moved with only a simple structure, and the installation layout is also free. Can be performed.

[Brief description of the drawings]

1A and 1B show a first embodiment of an antenna driving mechanism of the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a front view.

FIGS. 2A and 2B show a second embodiment of the antenna driving mechanism of the present invention, wherein FIG. 2A is a bottom view of a fixed portion, FIG. 2B is a plan view of a fixed base, and FIG. FIG.

FIG. 3 shows a third embodiment of the antenna driving mechanism according to the present invention;
It is a principal part enlarged front view which shows a fixing part, an arm part, and a handle.

4A and 4B show a conventional antenna driving mechanism, wherein FIG. 4A is a plan view and FIG. 4B is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Jack 2 ... Fixed part 2a ... Guide pin 3 ... Fixed base 3a ... Guide groove 4 ... Arm part 5 ... Handle 5a ... Shaft part 5b ... Handle part 6 ... Fixing bolt 10 ... Antenna 11 ... Turntable 12 ... Rotation axis

Claims (4)

(57) [Claims] 1. A satellite communication antenna installed on a turntable and rotating about a rotation axis, an expandable and contractible jack for adjusting an azimuth for rotating the antenna, and a fixing provided at a tip of the jack. And a fixed base on which the fixed portion is mounted and fixed, wherein a bendable arm for horizontally supporting the fixed portion is rotatable with respect to the turntable and the fixed portion. An antenna driving mechanism provided in the antenna. 2. The antenna driving mechanism according to claim 1, wherein guide means are provided on the fixed portion and the fixed base. 3. The antenna driving mechanism according to claim 1, wherein a handle is provided on the fixing portion. 4. The antenna drive mechanism according to claim 1, wherein said arm portion is provided with a lifting means for lifting said fixed portion.