JPH0317448Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat treadome for a parabolic antenna which is placed over a plate-like ring b protruding forward from the front edge of the parabolic antenna a.

A conventional seat radome of this type is simply a circular seat c (FIG. 1) whose diameter is larger than the diameter of the plate-shaped ring b, and locking devices d are attached at equal intervals to the periphery thereof. As shown in Fig. 2, this antenna radome is simply placed over the front surface of the plate-shaped ring b and the locking tool d is locked to the locking edge e of the parabolic antenna a, so the periphery between the locking tools d The portion f rose from the outer periphery of the plate-shaped ring b, and as a result, the following various defects occurred.

When wind is received from the front, the wind pressure applied thereto is applied to the locking tool d through the sheet c, and especially when the strength of the wind changes significantly, an impact load is applied to the locking tool. In some cases, the center portion of the seat tread dome may fall inward as shown in FIG.

If the wind is received from the rear direction, the wind will blow in from the raised peripheral edge f between the locking devices and the seat will be greatly agitated, which may cause premature deterioration of the sheet strength or cause a large impact to the locking devices. The load may damage the locking tool or cause the seat to shift.

The present invention is aimed at solving these various difficulties, and will be described in detail below based on one embodiment shown in the drawings.

A flat sheet portion 1 having approximately the same diameter as the diameter of the plate-shaped ring b protruding from the front of the parabolic antenna.
and a cylindrical seat part 2 which protrudes orthogonally rearward from the entire outer periphery so as to be able to be placed over the plate-shaped ring b of the parabolic antenna. The flat sheet part 1 and the cylindrical sheet part 2 are constructed by separately molding the same materials as conventional sheets and sewing them together.

If the diameter of the cylindrical sheet part 2 is too large than the diameter of the plate-shaped ring b, when it is placed over the same ring, a gap will be created between the two, making it easier for wind to blow in, so that the tubular sheet part 2 will be brought into close contact with the outer periphery of the long plate-shaped ring b. Select the dimensions accordingly.

Reference numeral 3 in FIG. 3 denotes locking devices attached at equal intervals to the peripheral edge 4 of the cylindrical seat portion 2, which lock onto the locking edge e of the parabolic antenna.

As mentioned above, in the present invention, the cylindrical sheet part 2 is formed on the outer periphery of the flat sheet part 1 to cover the plate-shaped ring b of the parabolic antenna. It is in close contact with the outer periphery, and therefore, unlike conventional seat radomes, there is no possibility that the seat between the fasteners floats above the plate-shaped ring b. In addition, unlike conventional seat radomes, there is no problem with wind blowing in from the floating part, and the received wind pressure is transmitted to the cylindrical seat part 2 and buffered, and the locking tool 3 is thereby weakened. Since additional wind pressure is applied, the locking tool 3 and the seat are less likely to be damaged, and the seat tread dome is less likely to be displaced.

Furthermore, since the conventional seat radome is simply a circular sheet, it is difficult to position it when it is attached to a parabolic antenna, and this poses problems such as the order in which the locking tools d are locked to the locking edge e. Since there is a cylindrical seat part 2, there is no need for special positioning just by covering the plate ring with the seat part 2, and there is no problem with the order of locking the locking tools 3, so the installation and removal work is very easy. becomes easier.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing an example of the use of a conventional seat radome, Figure 2 is a vertical cross-sectional diagram of the same radome, and Figure 3 is an explanatory diagram showing an example of the use of a conventional seat radome.
The figures show the seat tread dome according to the present invention, with A being a front view and B being a cross-sectional view of A. 1 is a flat sheet portion, 2 is a cylindrical sheet portion, 3 is a locking tool, b is a plate-shaped ring, and e is a locking edge.

Claims (1)

[Scope of utility model registration request] A flat sheet portion formed to have approximately the same size as the cross-sectional shape of the plate ring protruding from the front surface of the parabolic antenna, and a flat sheet portion protruding orthogonally rearward from the entire outer periphery of the flat sheet portion to cover the plate ring. 1. A seat radome for a parabolic antenna, characterized in that the cylindrical seat portion is integrally formed with the cylindrical sheet portion as described above, and the cylindrical sheet portion is covered and locked on the outer periphery of the plate-like ring.