JP2968703B2 - Antenna device - 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 device for adjusting the azimuth of an antenna used for satellite communication or the like by a jack, and more particularly, to mounting of the jack while avoiding interference between the jack and an antenna support. The present invention relates to an antenna device whose position can be easily moved and changed.

[0002]

2. Description of the Related Art Heretofore, when adjusting the azimuth of an antenna used for satellite communication or the like, generally, the antenna is rotatably mounted on a support and is expandable and contractable on the support and the antenna. The jack was attached, and the jack was expanded and contracted to rotate and drive the antenna.

FIG. 4 shows a general antenna device of this kind. As shown in FIG. 4, a conventional antenna device includes a support 100, a turntable 200 rotatably mounted on the support 100, and an antenna 300 for satellite communication or the like mounted on the turntable 200. One end is rotatably attached to the turntable 200 on which the antenna 300 is mounted, and the other end is constituted by a telescopic jack 400 which is rotatably attached to the outer periphery of the support 100.

On the outer periphery of the support 100, a jack 400
Is provided with a flange 101 as a mounting portion.
On the upper and lower surfaces of the flange 101, a pair of upper and lower jack mounting means 102 for rotatably mounting the other end of the jack 400 is fixedly projected by bolts 102a.

On the lower end side of the turntable 200, a turntable mounting portion 201, which similarly rotatably mounts one end of a jack 400, is projected. Thereby, the jack 400
The antenna 300 is rotatably supported at both ends in the horizontal direction, and is capable of driving the antenna 300 in the azimuth direction by expanding and contracting in the axial direction.

The flange 101 is provided with a bolt hole 101a into which the bolt 102a is screwed over the entire circumference, and the jack mounting means 400 can be mounted at an arbitrary position on the outer periphery of the flange 101.
The mounting position of the other end of the jack 400 can be changed.

According to the antenna device having such a configuration, the jack 400 rotatably attached to the support 100 and the turntable 200 expands and contracts, so that the turntable 200 is driven to rotate about the support 100. Is done.
This allows the antenna 300 to be adjusted in the azimuth direction within the range of expansion and contraction of the jack 400.

Further, by changing the mounting position of the other end of the jack 400 by moving the jack mounting means 400, the antenna 300 can be rotated out of the initially set driving range.

However, in such an antenna device, when the jack 400 is extended, as shown in FIG. 5, the side portion of the jack 400 and the outer periphery of the flange 101 of the support body 100 come into contact with each other and interfere with each other (see FIG. 5). Interference part 50 shown in FIG.
0), there is a problem that expansion and contraction of the jack 400 is limited to a certain range, and a wide driving range of the antenna 200 cannot be secured.

Therefore, in order to avoid such interference between the jack and the support body so as to allow a wider driving range of the antenna, an antenna device as shown in FIG. 6 has been conventionally proposed.

The antenna device shown in FIG.
The jack mounting means 102 as shown in FIG.
A long jack-fitting means 102 is provided directly on the outer periphery of the support 100 using bolts or the like without providing a flange 101 for fixing the fixing member.

Thus, even when the jack 400 is extended, the side portion of the jack 400 does not come into contact with the outer periphery of the flange.
Can be extended to a range that directly interferes with the support body 100 itself (interference portion 500 shown in FIG. 6), and the driving range of the antenna can be widened.

[0013]

However, in the conventional antenna device in which the end of the jack is directly attached to the support of the antenna as described above, the jack mounting means is smaller than when a flange is provided as a jack mounting portion. There is a problem that the length becomes very long and the rigidity is reduced.

Further, since no flange is provided as a jack mounting portion, the mounting position of the jack end can be changed only within the range of the jack mounting means provided on the support in advance, and the jack mounting position can be changed arbitrarily. There is also a problem that it is not possible to cope with a case where it is necessary to change the position to a different position.

[0015] In order to solve the problem of changing the mounting position of the jack of the conventional antenna device and to secure a wide driving range of the antenna, the actual opening 57-11 is required.
Japanese Patent No. 5714 proposes an antenna driving device in which a truck for fixing an end of a jack is provided, and this is removably slid on a guide rail to change the driving range of the jack. I have.

However, in the antenna driving device described in this publication, a guide rail must be formed on the same radius around the antenna, so that a certain space is always required at a place where the antenna is installed. For this reason, installation of the antenna itself cannot be performed depending on the space, and the installation layout of the antenna is significantly restricted.
There is a problem that space is wasted depending on the driving direction required for the antenna.

Further, this antenna driving device requires a main driving mechanism for moving the mounting position of the jack for driving the antenna and an auxiliary driving mechanism for moving the bogie supporting the antenna, so that the driving structure is complicated and large. In addition to
There was also a problem that it could not cope with instantaneous movement.

Further, in this antenna driving device, since the guide rail also serves as the fixing means, the guide rail needs to have a certain strength, so that the structure of the guide rail is complicated and the fixing work is complicated. Problems also occurred.

The present invention has been proposed in order to solve the problems of the conventional techniques, and eliminates the interference between the jack and the support of the antenna without providing a special mechanism or device. An object of the present invention is to provide an antenna device that can avoid the above problem and easily change the mounting position of the jack while ensuring a wide driving range of the antenna.

[0020]

In order to achieve the above object, an antenna device according to a first aspect of the present invention comprises a support, a turntable rotatably mounted on the support, and a turntable mounted on the turntable. An antenna that is mounted and rotates in an azimuthal direction about the support, and one end is rotatably mounted on a turntable on which the antenna is mounted, and the other end is rotatably mounted on the support. An expandable jack that drives the antenna in the azimuth direction, wherein the jack has a diameter larger than the outer circumference of the support, and is at least thicker than the outer circumference of the support. A pair of upper and lower flanges facing each other with a larger interval than the upper and lower flanges, respectively .
A pair of plate-like members, wherein the other end of the jack is
A pair of upper and lower jack mounting means which are rotatably held and axially attached from a direction, and from the lower end of the turntable to the support.
And project vertically so that it is positioned horizontally with the jack mounting means.
Turntable for pivotally mounting one end of the jack
A mounting portion, wherein the jack extends in a horizontal direction.
When the jack expands and contracts,
It is configured to fit between the pair of flanges .

Further, the antenna device according to the second aspect is configured such that the jack mounting means is formed integrally vertically.

[0022]

According to the antenna device of the present invention having the above-described structure, the end of the jack is clamped by the jack mounting means projecting from the pair of upper and lower flanges provided on the support.
When the jack is extended, the jack enters between the pair of upper and lower flanges, so that interference with the flange on the holding body side does not occur. As a result, the jack can be extended to a range that directly contacts the support itself, and the driving range of the antenna can be widened.

Also, since the jack mounting means is fixed to the flange using bolts or the like, the jack mounting means can be moved or changed to an arbitrary position on the flange to remove the jack from the initial drive range as in the prior art. In addition, the antenna can be driven to rotate freely.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the antenna device according to the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view showing an embodiment of the antenna device of the present invention, and FIG. 2 is a partial sectional plan view of the antenna device shown in FIG.

As shown in these figures, the antenna device of the present embodiment has a support 10, a turntable 20 rotatably mounted on the support 10, and a turntable 20 mounted on the turntable 20. And an antenna 30 that rotates in an azimuth direction about the support 10 and is used for satellite communication or the like. A jack 40 for driving the antenna is composed of the support 10 and the turntable 2.
On both sides, the both ends are rotatably mounted on shafts.

The jack 40 has one end connected to the antenna 30.
The other end is attached to the outer periphery of the flange 11 of the support 10 so as to be rotatable in the horizontal direction, and is freely expandable and contractible in the axial direction.

The expansion and contraction of the jack 40 drives the turntable 20 to rotate in the azimuth direction about the support 10 so that the azimuth angle of the antenna 30 can be adjusted.

The jack 40 is not particularly limited as long as it has a structure capable of extending and contracting in the axial direction. For example, various types such as a turn bag type and a worm wheel type can be used. .

A pair of upper and lower flanges 11 are formed on the outer periphery of the support 10. The flange 11 serves as a mounting portion for the jack 40, has an outer diameter larger than the outer periphery of the support 10, and is opposed to each other with a vertical interval larger than at least the thickness of the jack 40. An end of a jack 40 for driving the antenna is rotatably mounted on the side surface of the flange 11 via jack mounting means 12.

The jack mounting means 12 is a pair of plate-like members protruding from a pair of upper and lower flanges 11, respectively, and the other end of the jack 40 is held by the jack mounting means 12 from above and below to axially attach. As a result, the jack 40 is rotatable in the horizontal direction.

As shown in FIG. 2, the jack mounting means 12 is mounted on the flange 11 by screwing a fixing bolt 12a passing through the jack mounting means 12 into a bolt hole 11a formed in the flange 11. Is being done.

The bolt holes 11a into which the fixing bolts 12a are screwed are formed on the upper and lower surfaces of the pair of flanges 11 of the support 10 over the entire circumference. As a result, the jack mounting means 12 can be mounted on the flange 1 as in the prior art.
1 can be attached to any part of the outer periphery.

The jack mounting means 12 shown in FIG.
The upper and lower plate members are formed separately from each other, but in addition, as shown in FIG. 3, the upper and lower plate members are formed so as to be integrated at a portion that does not interfere with the jack 40. You can also.

As described above, when the jack attaching means 12 is integrated, the jack attaching means 12 can be attached to and detached from the flange 11 at the same time.
There is an effect that the work becomes easier as compared with the case where it is formed separately.

On the other hand, a support 1
Similar 0 jack mounting means 12, Oh Ru turntable mounting portion 21 to which one end of the jack 40 is pivotally attached is provided. This rotation
As is clear from FIGS. 1 and 2, the table mounting portion 21
Vertically projecting from the lower end of the turntable 20 toward the support 10
It is located horizontally with the jack mounting means 12,
Jack 4 whose other end is supported by jack mounting means 12
0 is supported horizontally, and one end of this jack 40 is
It is rotatably mounted on the shaft 20 side. This allows the jack 40 to expand , contract, and rotate in the horizontal direction.

Next, a description will be given of a mode of use of the antenna device of the present embodiment having such a configuration. First, usually, the jack 40 is attached at a predetermined position set in advance by the jack attaching means 12 protruding from the flange 11 of the support 10 and the turntable attaching portion 21 provided on the turntable 20. As the jack 40 expands and contracts, the turntable 20 rotates about the support 10 and the azimuth of the antenna 30 is adjusted.

At this time, when the jack 40 is extended, as shown in FIG. 2, the side portion of the jack 40 enters the space between the upper and lower pairs of the upper and lower flanges 11 so as to come into contact with the outer periphery of the flange 11. Interference does not occur.

Thus, the expansion and contraction of the jack 40 is not restricted to the flange 11, and the driving range of the antenna is
A wide range is ensured up to the extension range in which the jack 40 comes into direct contact with the support 10 itself (the interference portion 50 shown in FIG. 2).

Next, when it is necessary to change the azimuth angle of the antenna 30 outside the driving range of the jack 40 in such a state, the following is performed.

First, the bolt 12a is loosened, and the jack attaching means 12 is removed from the flange 11. Then, the removed jack attaching means 12 is moved to an arbitrary position on the flange 11 which is desired to be changed, and is attached to the destination flange 11.

Since the flange 11 is provided with the bolt holes 11a over the entire periphery of the upper and lower surfaces, the bolts 12a can be screwed at any positions on the flange 11. As a result, the jack attaching means 12 can easily move on the flange 11 as in the related art.

As described above, according to the antenna device of this embodiment, the end of the jack 40 is connected to the jack mounting means 12 protruding from the pair of upper and lower flanges 11 provided on the support 10.
When the jack 40 is extended, the jack 40 enters the space between the pair of upper and lower flanges 11 so that interference with the flange 11 on the support 10 side does not occur. As a result, the jack 40 can be extended to a range that directly contacts the support 10 itself.
The driving range of 0 can be widened.

Since the jack mounting means 12 is fixed by screwing the bolts 12a into the bolt holes 11a formed in the flange 11, the jack mounting means 12 is moved to an arbitrary position on the flange 11 as in the prior art. The antenna 30 can be driven to rotate outside the initial driving range of the jack 40.

[0044]

【The invention's effect】 As described above, the antenna device of the present invention
According to the system, special mechanisms and devices are installed. Without opening
Avoid interference between the jack and the support, and
While ensuring a large enclosure, the jack mounting position can be easily moved.
Can be changed.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a first embodiment of an antenna device according to the present invention.

FIG. 2 is a sectional plan view of a main part of the antenna device shown in FIG.

FIG. 3 is an overall perspective view showing a modified example of the first embodiment of the antenna device of the present invention.

FIG. 4 is an overall perspective view showing a conventional antenna device.

FIG. 5 is a cross-sectional plan view of a main part showing a conventional antenna device.

FIG. 6 is a cross-sectional plan view of a main part showing a conventional antenna device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Support body 11 Flange 12 Jack attaching means 20 Turntable 21 Turntable attaching part 30 Antenna 30 Jack 40 Jack

Claims (2)

(57) [Claims] 1. A support, a turntable rotatably mounted on the support, an antenna mounted on the turntable and rotating in an azimuthal direction about the support, An extendable jack rotatably mounted on a turntable on which the antenna is mounted and the other end rotatably mounted on the support, and driving the antenna in an azimuth direction. A pair of upper and lower flanges projecting from the outer periphery of the support and having a larger diameter than the outer periphery of the support and facing at least with an interval larger than the thickness of the jack; Pair of boards
And the other end of the jack is turned up and down.
A pair of upper and lower jack mounting means which are movably pinched and axially mounted, and project vertically from the lower end of the turntable toward the support.
And is positioned horizontally with the jack mounting means.
A turntable mount for rotatably mounting one end of the jack.
And the jack expands and contracts and rotates in the horizontal direction.
An antenna device characterized by entering between a pair of upper and lower flanges when a key is extended . 2. The antenna device according to claim 1, wherein said jack mounting means is formed integrally vertically.