JPH1028007A - Antenna system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna system which can be easily handled by simplifying the constitution of the system so that the system can be transported easily. SOLUTION: An elevating/lowering section 12 is installed to an antenna support body 11 so that the section 12 can be moved freely in the vertical direction and a pedestal 15 is mounted on the section 12 so that the pedestal 15 can be turned freely in the azimuth direction, and then, a reflector 20 is provided to the pedestal 15 through the first to third link members 16-18 and the first and second elongating and contracting mechanisms 26 and 28 so that the reflector 20 can be raised to a standby position from a housed position by means of the section 12 and guided upward to an expanded position by rotation from the standby position by means of the first elongating and contracting mechanism 26 and the link members 16-18, and then, the angle of elevation of the reflector 20 can be adjusted by means of the second elongating and contracting mechanism 28 at the expanded position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device suitable for being mounted on a mobile vehicle such as a satellite broadcast vehicle.

[0002]

2. Description of the Related Art Generally, an antenna device of this type is installed on a mounting member called a shelter mounted on a moving vehicle, moved to an operation place together with the moving vehicle, and used for satellite broadcasting or the like. In such an antenna device, components such as a reflector and a horn are required to be formed in a certain shape and size in order to secure desired antenna characteristics and to ensure operation.

On the other hand, in a mobile vehicle equipped with the above-described antenna device, there are restrictions on the size of the vehicle body, the size of the cargo, and the like, when traveling on a public road, due to the safety standards of the road transport vehicle. . For this reason, in the case of an antenna device for a mobile vehicle, when the installation location is changed, components such as a reflector and a horn are disassembled to satisfy the above security standards and transported to the installation location (operating location). Then, after reaching the installation location (operating location), a method of assembling and operating the component parts on the moving vehicle again is adopted.

However, in the above-described antenna device, the components must be disassembled and separated from the vehicle every time the moving vehicle moves, or the separated components must be mounted on the vehicle again. -There is a problem that handling including assembly work is very troublesome.

Also, there is a problem that the disassembly / assembly work environment is relatively on a vehicle having a poor scaffold or the like, and the work content is forced to be complicated.

[0006]

As described above, the conventional antenna device has a problem that handling is very troublesome because it must be disassembled and assembled at the time of transportation. The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an antenna device that has a simple configuration, can simplify transportation, and has easy handling.

[0007]

According to the present invention, there is provided a linearly moving portion disposed on a mounting body so as to be linearly movable, and the linearly moving portion is linearly moved with respect to the mounting body so as to be in a storage position and a standby position. And a base mounted rotatably about an azimuth angle with respect to the linear moving part, and one end of the base is rotatable about the elevation angle of the reflector via a first shaft. A first link member rotatably linked to a second end of the first link member, the first link member being rotatably linked around a second axis substantially parallel to the one end of the first link member; A second link member coaxially linked to the other end of the member, and one end rotatably linked to the base via a third axis substantially parallel to the first axis; An end is rotatably linked to the other end of the second link member via a fourth shaft. A third link member, one end of which is rotatably linked to the base via a fifth axis substantially parallel to the first and third axes, and the other end via the second axis. A first telescopic mechanism, which is rotatably linked to the reflector and is extendable and contractible at a standby position of the reflector, and which is capable of being telescopically driven to guide the reflector to a deployed position; A second link rotatably linked to the reflector via a sixth axis substantially parallel to the second axis, wherein the other end is rotatably linked to the reflector via a sixth axis substantially parallel to the second axis; A second telescopic mechanism that is telescopically driven to set the elevation angle of the reflector at a deployed position to be controlled, and an azimuth adjustment mechanism that adjusts the azimuth of the reflector by driving the base to rotate around an azimuth. And the first link member An antenna device comprising: a locking means for locking to a base, allowing the linear moving portion to be stored and deployed in the mounting body, and locking to the other end of the second and third link members. It is.

According to the above construction, the reflector is guided to the storage position or the standby position together with the base via the linear moving portion, and from the standby position, furthermore, the reflector is rotated substantially linearly via the first telescopic mechanism. The second telescopic mechanism adjusts the elevation angle, and adjusts the azimuth angle by the azimuth adjustment mechanism. As a result, the shape of the guide mechanism for linear movement of the reflector is kept to a minimum, and the transfer path from the storage position to the unfolding position can be widened. In addition, the storage and deployment configuration can be realized, and the handling during transportation can be simplified.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an antenna device according to an embodiment of the present invention. FIG. 1 shows a reflector storage position, FIG. 2 shows a reflector standby position, and FIG. 3 shows a reflector deployment position. Show.

That is, the mounting body 10 is referred to as a shelter, and is installed on a moving vehicle such as an automobile (not shown).
The antenna support 11 is attached to the predetermined position. A linear moving unit, for example, an elevating unit 12 called a pedestal is accommodated in the antenna support 11 so as to be movable in the directions of arrows A and B.

On the antenna support 11, a plurality of rotatable sprockets 13 constituting a lifting mechanism are arranged at predetermined intervals corresponding to the lifting distance. Is wrapped around freely. The chain 14 has both ends attached to the elevating section 12 and is wound around the sprocket 13 in an annular shape.

When a rotational force from, for example, a rotary drive unit (not shown) is transmitted, the proket 13 is driven to rotate to move and guide the chain 14 from one end to the other end or from the other end to the one end. 12 is guided up and down in the direction of arrow A or B.

The base 15 is moved in the azimuth direction (arrows C and D) via the azimuth adjustment drive unit (not shown).
Direction). And this base 15
, A pair of first to third link members 16 to 18 are respectively disposed so as to sandwich the base 15 (however,
In the drawing, only one side of the base 15 is shown for convenience of illustration, but both sides are attached and arranged in the same manner with respect to the base 15 so that only one side will be representative thereafter. explain).

The first link member 16 has one end thereof connected to the shaft 1.
9, the other end is linked to the back side of the reflector 20 via a shaft 21 so as to be freely rotatable in the directions of arrows E and F. . One end of a second link member 17 is rotatably linked to the shaft 21, and the other end of the third link member 18 is connected to the other end of the second link member 17 via a shaft 22. Linked. One end of the third link member 18 is rotatably linked via a shaft 23 in the directions of arrows E and F.

At the intermediate portion of the first link member 16,
A lock mechanism 24 is provided. This lock mechanism 24
Is provided so as to be able to move in and out of the first link member 16 via a spring mechanism (not shown).

The base 15 is provided with a locked portion 25 (see FIG. 2) for locking the storage and standby positions corresponding to the lock mechanism 24 of the first link member 16. The locked mechanism 25 of the first link member 16 is engaged with the locked portion 25 at the storage position and the standby position of the reflector 20, and the first to third link members 1 are engaged.
Positions 6 to 18 are locked at the storage and standby positions.
The lock mechanism 24 is released when the lock is released from the locked portion 25 against the urging force of the spring mechanism (not shown).

The shaft 23 for linking the third link member 18 to the base 15 is provided with a locked portion (not shown for the sake of illustration) for locking the developed position. The locked mechanism 24 of the first link member 16 is engaged with the locked portion (not shown) in the deployed position of the reflector 20 to move the first to third link members 16 to 18 to the deployed position. Lock the position (see Fig. 3). The lock mechanism 24 is configured such that the lock is made by the spring mechanism (not shown).
Is released by detaching from the locked portion (not shown) against the urging force of.

One end of a first expansion / contraction mechanism 26 for deploying and driving is supported at a substantially central portion of the base 15 via a support shaft 27 so as to be rotatable in the directions of arrows E and F. The first telescoping mechanism 26 has an intermediate portion provided to be freely expandable and contractible in the direction of the arrow, and the other end rotatably supported by the shaft 21.
Accordingly, the first telescopic mechanism 26 is urged to rotate in the directions of arrows F and E about the support shaft 27 in cooperation with the first to third link members 16 to 18 in conjunction with the expansion and contraction. Then, the reflector 20 is rotated in the same direction to guide the reflector 20 to the deployed position (see FIG. 3).

On the back side of the reflector 20, one end of a second telescopic mechanism 28 for adjusting the elevation angle is supported via a support shaft 29 so as to be rotatable in the directions of arrows E and F. The support shaft 29 is disposed substantially parallel to the shaft 21 supporting the other end of the first link member 16 at a predetermined interval.

The second telescoping mechanism 28 has an intermediate portion provided so as to be freely expandable and contractible in the direction of the arrow, and the other end rotatably supported by the shaft 22. It is urged to rotate in the directions of arrows E and F as the center.

In the above configuration, when the reflector 20 is stored, the sprocket 13 is driven to rotate counterclockwise in the drawing as shown in FIG. 1, and the elevating unit 12 is moved downward most in the direction of arrow B. At this time, the reflector 20
In a state in which the second telescopic mechanism 28 is driven to contract and is most urged to rotate in the direction of arrow F, the first telescopic mechanism 26 is driven to contract, and the first telescopic mechanism 26 drives the arrow F to the maximum.
It is in a state of being urged to rotate in the direction. Here, the lock mechanism 24 is locked by the locked portion 25 of the base 15 and is locked at the storage position.

When the reflector 20 is deployed in this stored state, the sprocket 13 is driven to rotate clockwise in the drawing. Then, the chain 14 is rotated in the same direction, and the elevating unit 12 moves the antenna support 1 as shown in FIG.
1 and is moved in the direction of arrow A to the standby position.

In this standby position, the lock mechanism 24
Is unlocked, and the first telescopic mechanism 26 is driven to extend. Then, the first expansion / contraction mechanism 26 applies the extension force to the first to third link members 16 to 18, respectively, and the support shaft 27 is centered on the base 15 in the clockwise direction in the drawing. It is turned.

Here, the reflector 20 is pivoted in the same direction and guided upward to the developed position as shown in FIG. At this time, the first link member 16 is
Is operated to be engaged with a locked portion (not shown) provided on the shaft 22, and is positioned and locked at the developed position, and is positioned and locked here together with the second and third link members 17 and 18.

In this deployed position, when the second telescopic mechanism 28 is driven to expand and contract as shown in FIG. 4, the reflector 20 moves in the direction of arrow E or F around the shaft 21 in conjunction with the expansion and contraction. The elevation angle is variably adjusted by being rotationally biased. In this deployed position, the reflector 2
0 is the base 1 by the azimuth adjustment drive unit (not shown).
5 is rotated about the azimuth with respect to the elevating unit 12, and the azimuth is variably adjusted.

When the reflector 20 in the deployed position is housed in the antenna support 11, first, the second telescopic mechanism 28 and the azimuth adjustment drive unit (not shown) are driven and controlled. Is set to move to the development reference position shown in FIG.

Next, the lock mechanism 24 is operated to operate the shaft 23.
The first link member 16 is released from the locked portion (not shown). Here, the first telescopic mechanism 26 is driven to contract. Then, the first telescopic mechanism 26
The first to third link members 16 to 18
, Respectively, and is rotated counterclockwise with respect to the base 15 around the support shaft 27 in the drawing, and the reflector 20 is
It is rotated in the same direction about 1 and guided to the standby position.

In the standby position, the first link member 16 is positioned and locked by the locking mechanism 24 thereof being engaged with the locked portion 25 of the base 15, and the second and third link members 17, 18 are locked. At the same time, it is locked in the standby position.

Next, the elevating drive unit (not shown) is driven, and the sprocket 13 is rotated counterclockwise in the figure. Then, the chain 14 is moved and guided by the sprocket 13 in the same direction, and urges the elevating unit 12 to move in the direction of the arrow B to move it to the storage position in the direction of the arrow B.
Here, the reflector 20 is guided to the storage position of the antenna support 11, and the storage operation is completed.

As described above, in the antenna device, the elevating unit 12 is provided on the antenna support 11 so as to be able to move up and down, and the base 15 is mounted on the elevating unit 12 so as to be rotatable in the azimuth direction. The reflector 20 is mounted on the base 15 with first to third reflectors.
Link members 16 to 18, first and second telescopic mechanisms 2
6 and 28, the reflector 20
Is moved up from the storage position to the standby position via the elevating unit 12, and the reflector 20 is pivotally deployed at the standby position via the first telescopic mechanism 26 and the first to third link members 16 to 18. It is configured to be guided up to the position and to adjust the elevation angle by the second telescopic mechanism 28 in the deployed position.

According to this, the movement path for the vertical movement of the reflector 20 is minimized, and
0 can be moved up and down over a wide range from the stowed position to the deployed position. For example, it is possible to secure the downsizing until the safety standard of the road transport vehicle is satisfied. Therefore, since the components including the reflector 20 can be stored and deployed in the mounting body 10 without disassembling and assembling as in the related art, the handling including transportation can be simplified. I can do it.

Further, according to this, the reflector 20 on the base 15 raised to the standby position is moved upward by the first telescopic mechanism 26 about the shaft 19 relative to the base 15. Since the reflector 20 is guided to the unfolded position, the reflector 20 can be arranged at a substantially central position of the base 15 at the unfolded position, so that the output of the azimuth adjustment drive unit (not shown) can be output. As a result, the azimuth angle adjustment system can be reduced in size, and power saving can be promoted.

In the above-described embodiment, a case has been described in which the arrangement is such that the arrangement is made in combination with the mounting body 10 provided on the moving vehicle. However, the arrangement is not limited to this, and the arrangement may be made such that the arrangement is made in a fixed station. It is also possible.

Further, in the above-described embodiment, a case has been described in which the elevating unit 12 is configured to move up and down using the sprocket 13 and the chain 14. However, the present invention is not limited to this. It is possible.

Further, in the above-described embodiment, the case has been described in which the base 15 is configured to be able to move up and down with respect to the antenna support 11 via the elevating unit 12. However, the present invention is not limited to this.
The base may be configured to be movable linearly in a horizontal direction or the like.

Further, in the above-described embodiment, the case has been described where the lock mechanism portion 24 is integrally mounted on the first link member 16. However, the present invention is not limited to this.
For example, it may be configured to be separable from the first link member 16. Therefore, it is needless to say that the present invention is not limited to the above-described embodiment, and that various modifications can be made without departing from the scope of the present invention.

[0037]

As described above in detail, according to the present invention, it is possible to provide an antenna device which can simplify the transportation with a simple structure and which can simplify the handling. .

[Brief description of the drawings]

FIG. 1 is a diagram showing an antenna device according to an embodiment of the present invention.

FIG. 2 is a view showing a reflector standby position in FIG. 1;

FIG. 3 is a diagram showing a reflector deployed position in FIG. 1;

FIG. 4 is a view for explaining the elevation angle adjustment operation of the reflector at the reflector deployed position in FIG. 3;

[Explanation of symbols]

 10 ... Mounting body. 11 ... antenna support. 12 elevating part. 13 ... Sprocket. 14… Chain. 15 ... Base. 16: First link member. 17: Second link member. 18: Third link member. 19, 21, 22, 23 ... axis. 20 ... Reflector. 24: Lock mechanism section. 25: Locked part. 26 ... First telescopic mechanism. 27, 29 ... Support shaft. 28. Second telescopic mechanism.

Claims (4)

[Claims] 1. A linear moving part disposed linearly movable on a mounting body, a guide mechanism for linearly moving the linear moving part with respect to the mounting body and guiding the linear moving part to a storage position and a standby position;
A base mounted to be rotatable around an azimuth angle with respect to the linear moving part; one end of the base is rotatably linked to a height of a reflector via a first shaft; A first link member rotatably linked to a reflector about a second axis substantially parallel to one end, and one end coaxial with the other end of the first link member on the second shaft. A second link member linked to the base and one end rotatably linked to the base via a third axis substantially parallel to the first axis, and the other end connected to the second link. A third link member rotatably linked to the other end of the member via a fourth shaft, and a fifth axis having one end substantially parallel to the first and third axes on the base. The other end is rotatably linked to the reflector via the second shaft. A than the being stretchable in the standby position of the reflector, the first telescopic mechanism of telescopic drive for guiding the reflector in the deployed position, the one end 4
And the other end is rotatably linked to the reflector via a sixth axis substantially parallel to the second axis, the reflector being rotatably linked to the reflector. A telescopic second telescopic mechanism that is driven to expand and contract at a deployment position controlled by the telescope to set the elevation angle of the reflector; A mechanism and the first link member are locked to the base to allow the linear moving part to be stored and deployed in the mounting body, and to be locked to the other ends of the second and third link members. An antenna device comprising a lock unit. 2. The antenna device according to claim 1, wherein the attachment is provided on a moving vehicle. 3. The antenna device according to claim 1, wherein the linear moving portion is provided so as to be able to move up and down with respect to the mounting body. 4. The antenna device according to claim 1, wherein the guide mechanism is a chain drive mechanism.