JPH084724Y2 - Housing structure for planar antenna - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a housing structure of a planar antenna used for satellite broadcast reception and the like.

<< Prior Art >> As a conventional housing structure of a planar antenna, for example, one disclosed in Japanese Patent Application No. 1-19477 is known. This will be described with reference to FIG.

In this planar antenna, a waterproof member 8 is sandwiched between an outer peripheral portion of a rear case 2 accommodating an antenna functional component 1 and a radome 3, and then an outer peripheral portion of the rear case 2 and the radome 3 sandwiching the waterproof member 8 is fixed by a frame 12. are doing.

<< Problems to be Solved by the Invention >> However, in the conventional planar antenna as shown in FIG. 7, since the rear case 2 and the radome 3 are fixed by the frame 12 having high rigidity, FIG. As shown in FIG. 8, a linear frame 20 and a corner frame 13 are separately prepared and fixed to each other with screws, or as shown in FIG. 8 (b), a frame 21 is preliminarily bent into a predetermined shape.
Had to be fixed with screws 22.

For this reason, the conventional planar antenna has a problem that not only the number of processing steps for the frame increases but also the number of assembling steps increases.

Further, it is necessary to change the length of the frame, the bending radius, the shape of the corner frame, etc. according to the shape and size of the planar antenna, which causes a problem that the processing cost, the mold cost, etc. become high.

The present invention has been made in order to solve the above problems, and its purpose is to reduce the number of frame processing steps and assembly steps, and to easily change the shape of an antenna. To provide the structure.

<Means for Solving the Problems> In order to achieve the above object, the present invention forms a groove portion by providing a flange surface and an outer peripheral rising surface on the outer periphery of a rear case in a planar antenna, and a flange surface on the outer periphery of a radome. A groove is formed by providing an outer peripheral rising surface, a compressible waterproof member is sandwiched between both flange surfaces, and clips are fitted into a plurality of notches provided on both outer peripheral rising surfaces to form a rear case. The radome is fixed, and a frame, which is a continuous molded body having a C-shaped cross section and having flexibility, is fitted and attached to both the groove portions.

<Operation> In the present invention, since the compressive waterproof member is sandwiched between the rear case and the flange surface of the radome and fixed with the clip, the rear case and the radome can be easily fixed.

Further, since the convex portion can be made smaller than the groove portion by fixing with a clip, the frame can be attached along the groove portion without any trouble.

Furthermore, since the frame has a cross-sectional shape that fits into the groove portion of the rear case and the radome, the appearance of the frame is improved.

<< Embodiment >> An embodiment of the present invention will be described below in detail with reference to the drawings.

It should be noted that the same components as those of the above-mentioned conventional example are designated by the same reference numerals for description.

As shown in FIG. 4, the planar antenna 11 in this embodiment is attached to the tip of a column 15 via a mounting bracket 14 so that the azimuth and elevation can be adjusted.

Therefore, as shown in FIG. 2, the housing of the planar antenna is attached to the rear case 2 and the radome 3 which house the antenna functional component 1 (details not shown), and the outer peripheral mating surfaces of the rear case 2 and the radome 3. It is composed of a frame 6 and the like.

Further, the rear case 2 and the radome 3 respectively have groove portions 17, 17 'formed on the outer circumferences of the respective main body portions by the mutually facing flange surfaces 4, 4'and the outer circumferential rising surfaces 5, 5'.

Further, the rear case 2 and the radome 3 have a compressible waterproof member 8 sandwiched between the flange surfaces 4, 4 ′ facing each other. The compressible waterproof member 8 is preferably a rubber-plastic foam or the like, which is rich in compression and restoration properties, and more preferably one or both surfaces of which is adhesive.

As shown in FIG. 1, a plurality of notches 9 and 9'are provided on the outer peripheral rising surfaces 5 and 5'of the rear case 2 and the radome 3, respectively.
Rear clips 2 by fitting clips 10a to 10c to that part
And the radome 3 is fixed. The number and size of the cutouts 9 and 9'are the same as the size of the plane antenna and the clips 10a to 1a.
It may be appropriately formed according to the strength of 0c and the like. Further, the positions of the notches 9 and 9 ′ are not limited to those shown in the figures, and it is desirable to appropriately provide the notches 9 and 9 ′ within a range that does not hinder the fitting when the frame 6 is fitted into the groove.

As the clip, as shown in FIG. 1, the notch 9,
Clip 10 that sandwiches flange surfaces 4, 4'with 9 '
Alternatively, it is possible to use clips 10b, 10c, etc. that are inserted in the notches 9 and 9'and are laterally displaced to sandwich the rising surfaces. In this case, the shape is not limited to that shown in FIG.

The material of the clips 10a to 10c is preferably a thin material such as a stainless steel plate or a spring steel plate that can bend a metal, but is not limited to these materials.

Further, as another embodiment of the clip, as shown in FIG. 5, a part of the outer peripheral rising portion 5 on the rear case 2 side is raised to the opposite side as a clip 10d, and the notch portion on the radome 3 side is formed. There is also a method of bending so as to sandwich the flange surface 4'of 9 '. The rear case 2 in this case
Is preferably made of metal such as a steel plate.

The frame 6 is a flexible continuous molded body having a C-shaped cross section having projections 7 and 7'fitted in the grooves 17 and 17 'of the rear case 2 and the radome 3, respectively.

Further, the frame 6 is formed of an extruded product of a thermoplastic elastomer such as a vinyl chloride-based, olefin-based, urethane-based, or synthetic rubber, and is cut into an appropriate length according to the outer circumference of the planar antenna to heat the end faces together. They are joined by welding, adhesion or the like.

Further, the frame 6 is attached along the outer circumferences of the rear case 2 and the radome 3 while fitting the projections 7 and 7'into the grooves 17 and 17 '(see FIG. 3). It is to be noted that the frame 6 is manufactured to be shorter than the outer circumference of the planar antenna, and is fit into the frame 6 by utilizing flexibility so that the frame 6 can be stored easily.

Further, it is preferable that the frame 6 has high strength, and if the frame 6 is stiff and the mounting workability becomes poor, the frame 6
The workability of preheating is improved.

If the frame 6 has a thin sectional shape as a whole, it is easier to follow the rounded corners 17 and 17 ′ of the rear case 2 and the radome 3.

If the wall thickness of the protrusions 7 and 7'to be fitted in the grooves 17 and 17 'is larger than that of the "C" -shaped outer peripheral portion, the protrusions will surely fit into the grooves even at the corners, and the wall thickness will be thin. The outer peripheral portion of the has an effect of being well followed by the bending of the corner portion, and has an effect that an evenly bent state can be obtained in terms of appearance and that the opening of the cross-sectional shape peculiar to the bent portion can be eliminated. .

The radome 3 is made of a thermoplastic synthetic resin or the like, and the rear case 2 is made of a thermoplastic synthetic resin or a galvanized steel sheet, an aluminum plated steel sheet or the like.

<Effect of device> As described above, the planar antenna according to the present invention has the groove formed by the flange surface and the outer peripheral rising surface on the outer peripheral portion of the rear case and the radome, respectively. The rear case and radome can be fixed with, and the frame can be attached along the groove, so assembly is very easy.

Also, since a compressible waterproof member is sandwiched between the rear case and the flange surface of the radome, and fixed with clips,
By absorbing the dimensional error of the antenna function member, radome, and rear case, it is possible to easily obtain a planar antenna having excellent waterproofness.

Furthermore, since the frame is a flexible continuous body,
It can be attached by cutting the frame to an appropriate length in advance and connecting the end faces to each other, and it is possible to greatly reduce the number of frame processing steps compared to the conventional one.
Even if the shape and dimensions of the planar antenna are different, it can be mounted simply by changing the length of the frame.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a main part of a planar antenna according to the present invention, FIG. 2 is an explanatory sectional view showing a mounting state of the antenna, and FIG. 3 is a plan view showing a mounting state of the antenna.
FIG. 4 is an explanatory view showing a supporting state of the antenna, FIG. 5 is an exploded perspective view showing another embodiment of the flat antenna according to the present invention, and FIG. 6 is an explanatory sectional view showing a mounting state of the antenna. FIG. 7 is an explanatory sectional view showing a mounting state of a conventional planar antenna, and FIGS. 8 (a) and 8 (b) are plan views of the antenna. 1 …… Antenna functional parts 2 …… Rear case 3 …… Radome 4,4 ′ …… Flange surface 5,5 ′ …… Rise of outer circumference 6 …… Frame 7,7 ′ …… Projection 8 …… Waterproof member 9, 9 '... Notch 10a-10d ... Clip 11 ... Planar antenna 12 ... Frame (conventional product) 13 ... Corner frame 14 ... Mounting bracket 15 ... Strut 16 ... Connection 17,17' ... … Groove

Claims (1)

[Scope of utility model registration request] 1. A rear case is provided with a flange surface and an outer peripheral rising surface to form a groove portion, and a radome is provided with a flange surface and an outer peripheral rising surface to form a groove portion, and a compressive property is provided between both flange surfaces. A waterproof member is sandwiched, and clips are fitted into a plurality of notches provided on both outer peripheral rising surfaces to fix the rear case and the radome, and continuous molding having flexibility in a C-shaped cross section in the both groove portions. A planar antenna housing structure characterized in that a frame, which is a body, is fitted and attached.