JP3047860B2 - Antenna mounting 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 mounting device for satellite communication, satellite broadcast reception, and terrestrial communication.
More particularly, the present invention relates to a device for attaching an antenna having a rotating mechanism to a moving body.

[0002]

2. Description of the Related Art Various methods have been known for attaching an antenna to a moving body. For example, Japanese Unexamined Utility Model Publication No. 61-42104 discloses the following technology of an antenna mounting device.

Next, a conventional antenna mounting device will be described with reference to the drawings. FIG. 10 is a perspective view of a conventional antenna mounting device. In FIG. 10, a conventional antenna mounting device mounts an electric telescopic antenna 101 via a cushioning material 104. The electric telescopic antenna 101 is fixed to the metal fitting 103 by a screw 102. The metal fitting 103 is fitted into the groove of the cushioning material 104, and is fixed to the metal fitting 105 and the metal fitting 106 by a bolt 107 and a washer 108 in a sandwich shape. Hardware 106
Is fixed to an arbitrary position of a mobile body such as an automobile or a ship on which the antenna is mounted, by a screw 109 and a nut 110.

FIG. 11 is a detailed cross-sectional view around the cushioning member 104 shown in FIG. The metal fitting 103 is covered with a cushioning material 104, is sandwiched between metal fittings 105 and 106 from both sides, and is fixed by a bolt 107 and a washer 108.

[0005]

The above-mentioned prior art antenna mounting apparatus has a problem that vibration transmission is large. That is, in FIG. 10, there is a possibility that the metal fitting 103 for mounting the antenna and the bolt 107 sandwiching the cushioning material 104 physically contact each other.
There is a problem that vibration is very easily transmitted because the metal comes into contact with a hard material.

Further, even if the metal fitting with the antenna and the bolt sandwiching the cushioning material are not in contact with each other, the metal fitting with the antenna can move up and down due to the deterioration of the cushioning material and the vertical load. In this case, there is a problem that the metal fittings and the bolts come into contact with each other, so that vibrations are easily transmitted.

Further, from the structure shown in FIG. 11, when a strong vertical force is applied to the metal fitting 103, only the vertical frictional force between the cushioning material 104 and the metal fitting 103 holds the metal fitting 103. Although the tip of the metal fitting 103 has a slightly bent structure, it cannot receive a vertical force.

Therefore, when a strong vertical force is applied, it is the bolt 107 that prevents the metal fitting 103 from being displaced. At this time, the vibration is transmitted through the bolt 107, so that the vibration transmission can be reduced. Have problems that cannot be achieved.

As described above, an object of the present invention is to prevent vibration generated from an antenna mounted on an antenna mounting device from being transmitted to a mobile body side on which an antenna mounting device is installed as much as possible and to generate the vibration from the mobile body. An object of the present invention is to provide an antenna mounting device that can minimize transmission of vibration to the mounted antenna.

[0010]

According to the present invention, there is provided an antenna mounting apparatus, comprising: a carrier bar having an elongated shape in which the mounting base is filled with a second buffer via a first buffer under a mounting base for mounting the antenna. And the carrier bar is attached to a moving body, the antenna mounting device comprising:
A support filled with the first cushioning material around the bottom surface
It is characterized by attaching

[0011] The mounting base may include one or a plurality of hook-shaped supports each having a bent tip in the first cushioning material.

Further, the first and second cushioning members are the same or different cushioning members. The antenna mounting device according to claim 1, wherein the first and second cushioning members are a foam material or a sponge.

The carrier bar may have a square, rectangular, polygonal, circular, or elliptical cross section, a metal or plastic material on the outer periphery, and a cavity inside and filled with the second cushioning material. Features.

The metal fitting which is vertically lowered to the lower part of the mounting base and whose tip is bent outward is formed of a metal or plastic material having a hollow inside and filled with a cushioning material through a cushioning material. It joins the part where the wall has been removed. In this case, since only the joining via the cushioning material occurs, almost no vibration is transmitted.

[0015]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a perspective view of the best mode for carrying out the present invention. FIG. 2 is a side view of the antenna mounting device 10 of FIG.

Referring to FIG. 1, an antenna mounting device 10 according to the present invention is formed of an elongated rod having a rectangular cross section filled with a cushioning material such as foam or sponge. Carrier bar 1, a side support 2 which is a metal wall on a side surface of a portion where the upper and lower metal walls are removed at an arbitrary position of the carrier bar 1, a mounting base 3 for mounting an antenna, and a mounting base 3. And the side support 2.

Further, in order to explain the structure of the joint between the side support 2, the mounting base 3, and the cushioning material 4, the structure shown in FIG.
FIG. 3 shows a detailed sectional view of A '.

At the approximate center of the mounting base 3, there are provided two supports 5 arranged in parallel, and the tips thereof are bent outward to form hooks 6. The cushioning material 4 is filled between the support 5, the hook 6 and the side support 2,
It joins with the buffer material 4 interposed.

FIG. 4 is a detailed sectional view taken along the line BB 'of FIG. 2 for explaining the internal structure of the carrier bar 1. As shown in FIG.
The inside of the carrier bar 1 is hollow, and the cushioning material 7
Is filled.

The cushioning member 7 in FIG. 4 and the cushioning member 4 in FIG. 3 are desirably connected continuously from the point of strength, but may be independent.

Therefore, the structure is such that the mounting base 3 is joined with as large an area as possible so that the mounting base 3 can sufficiently withstand a strong force. Also, in the event that a very strong force is applied to the mounting base 3 and the cushioning material 4 is crushed,
Since the hook 6 and the side support 2 are attached to the carrier bar 1, there is no danger that the mounting base 3 will come off the carrier bar 1.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an antenna mounting device 10 according to the present invention will be described with reference to FIGS. Carrier bar 1
For the purpose of installation in a car, it is usually effective to have a length of about 1.5 m, a width of about 4 cm and a height of about 3 cm.

As the material, metal is used to maintain strength, but the effect is the same with plastic or the like.

The inside of the carrier bar 1 is
As shown in FIG. 4, a foam material or the like is filled as a cushioning material. At an arbitrary position of the carrier bar, a vertical wall surface of the carrier bar is removed, and there is a portion that becomes only the side support 2. The mounting base 3 is inserted into this part, and its cross-sectional structure is as shown in FIG.

The mount 3, the support 5, and the hook 6 are made of metal or plastic, and are joined to the side support 2 via the cushioning material 4.

In FIG. 2, the length S1 of the side support 2 in the longitudinal direction and the length S2 of the hook 6 in the longitudinal direction are shown.
Have a relationship of S1> S2. Therefore, the transmission of vibration is
In any case, the vibration is transmitted only through the cushioning material, and the vibration transmission is minimized. In terms of strength,
As can be seen from FIG. 3, first, for a downward force,
The cushioning material 4 is filled up to the root of the mounting base 3, so that a large holding force can be obtained. Hook 6
Is firmly fixed. Further, also in the lateral direction, there is no problem because the side support 2 is in contact with the cushioning material over a wide area. Also, even if the cushioning material is damaged by a strong impact, the width of both ends of the hook 6 is equal to the outermost width of the side support 2, so that the hook 6 does not come off and is skipped and a secondary disaster occurs. There is no possibility.

Next, an embodiment in which the antenna mounting device 10 of the present invention is applied to a moving body will be described with reference to the drawings.

FIG. 5 is an external view of the case where the tracking antenna 11 is mounted on the automobile 8 using the antenna mounting device 10. Two main antenna mounting devices 10 are mounted on the side surface of the roof of the automobile 8 using four metal fittings 9, and a circular tracking antenna 11 is mounted on the main antenna mounting device 10.

If the tracking antenna 11 has, for example, a rotating mechanism inside, the vibration generated from the tracking antenna 11 is transmitted to the inside of the vehicle by transmitting the antenna mounting device, so that the driver or the passenger can hear an unpleasant vibration sound. Must. Further, the vibration of the automobile is also transmitted to the tracking antenna 11 via the antenna mounting device, which deteriorates the operating environment of the tracking antenna 11 and increases the failure rate.

However, the present antenna mounting device has a structure as shown in FIG. 3, and the vibration generated from the tracking antenna 11 is transmitted to the support 5 and the hook 6 but is transmitted to the side support 2 when transmitted. Since it passes through the cushioning material 4, it is greatly attenuated here. Therefore, almost no vibration is transmitted to the side support 2 side.

This means that the transmission of vibration from the side support 2 to the mounting base 3 is similarly absorbed by the cushioning material 4 and is not transmitted.

Here, the tracking antenna 11 is an antenna for satellite communication or satellite broadcast reception, and has a rotating mechanism such as a motor, a gear, a belt, etc. inside, and constantly generates mechanical vibration. The antenna is targeted. The vibration generated by such a tracking antenna 11 is usually 10 k
There are many audible sound components below Hz, which may be unpleasant for drivers and passengers in the vehicle. In addition, as a target vehicle,
In addition to normal passenger cars, special vehicles such as ambulances and police cars, buses and trucks can be considered to be relatively harsh and have large swings and shocks.If the tracking antenna has a precise mechanism, It is desirable that a structure that does not transmit the signal to the tracking antenna 11 be used.

As described above, in the embodiment of the present invention, the shape of the carrier bar 1 and the shape of the support 5 are as shown in FIG.

However, the present invention is not limited to the shape shown in FIG. 3. For example, as shown in FIGS. 6 to 9, as another embodiment, the cross section of the carrier bar 1 is circular or polygonal. , A rectangular or elliptical shape, or a plurality of supports 5 having a T-shaped shape.

It should be noted that the same effect can be obtained even when the cross section of the carrier bar is a polygon other than a rectangle, a circle, or an ellipse.

As described in detail above, the present antenna mounting device has a structure as shown in FIG. 3 or FIG. 6 to FIG.
Nothing other than the cushioning material 4 exists between them. Therefore, all transmitted vibrations and shocks pass through the cushioning material 4. At this time, most of the vibration and shock components are absorbed by the cushioning material 4 and are not transmitted.

[0037]

According to the antenna mounting apparatus of the present invention, it is possible to suppress the transmission of the vibration generated from the antenna mounted on the antenna mounting apparatus to the moving body only by having the simple structure described above. It also has the effect of preventing the vibration generated from the moving body from being transmitted to the attached antenna side.

[Brief description of the drawings]

FIG. 1 is a perspective view of an antenna mounting device according to the present invention.

FIG. 2 is a side view of the antenna mounting device of the present invention.

FIG. 3 is a detailed sectional view taken along line AA ′ of FIG. 2;

FIG. 4 is a detailed sectional view taken along line BB ′ of FIG. 2;

FIG. 5 is a perspective view when the antenna mounting device of the present invention is mounted on an automobile.

FIG. 6 is a cross-sectional view of an embodiment when the cross-sectional shape of the carrier bar of the antenna mounting device of the present invention is circular.

FIG. 7 is a cross-sectional view of an embodiment when the cross-sectional shape of the carrier bar of the antenna mounting device of the present invention is octagonal.

FIG. 8 is a cross-sectional view of an embodiment when the antenna mounting device of the present invention has three supports.

FIG. 9 is a cross-sectional view of one embodiment in which the carrier bar of the antenna mounting device of the present invention has an elliptical cross-sectional shape.

FIG. 10 is a perspective view of a conventional antenna mounting device.

FIG. 11 is a sectional view of a conventional antenna mounting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carrier bar 2 Side support 3 Mounting stand 4 Buffer material 5 Support 6 Hook 7 Buffer material 8 Automobile 9 Metal fitting 10 Antenna mounting device 11 Tracking antenna 101 Electric telescopic antenna 102 Screw 103 Metal fitting 104 Buffer material 105 Metal fitting 106 Metal fitting 107 Bolt 108 Washer 109 Screw 110 nut

Claims (7)

(57) [Claims] 1. A first mounting member under a mounting base for mounting an antenna.
An antenna mounting device in which the mounting base is joined to an elongated carrier bar filled with a second buffer material via a buffer material, and the carrier bar is mounted on a moving body,
The periphery of the mounting base was filled with the first cushioning material.
An antenna mounting device having a support mounted thereon. 2. The antenna mounting device according to claim 1, wherein the mounting base has one or a plurality of hook-shaped supports with their tips bent in the first cushioning material. 3. The antenna mounting device according to claim 1, wherein the first and second cushioning members are the same or different cushioning members. 4. The antenna mounting device according to claim 1, wherein the first and second cushioning members are a foam material or a sponge. 5. The carrier bar has a square, rectangular, polygonal, circular or elliptical cross section, a metal or plastic material on the outer periphery, and a hollow inside, and is filled with the second cushioning material. The antenna mounting device according to claim 1, wherein: 6. A side support is provided on a side surface of the carrier bar, and the inside of the side support is filled with the first cushioning material to prevent the hook-shaped portion of the mounting base from coming off by the side support. The antenna mounting device according to claim 2 . 7. The antenna according to claim 1, wherein the antenna mounting device mounts one or more antenna mounting devices on a moving body using a predetermined metal fitting, and further mounts an antenna on the mounting base. Mounting device.