JPH0533052Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a parabolic antenna, and more particularly to a means for attaching a phase plate in a parabolic antenna.

<Prior Art> Generally, a plate-shaped phase plate is incorporated in a cylindrical feedphone of a parabolic antenna, and conventionally, this phase plate is fixed to the feedphone using an adhesive.

<Problems to be solved by the invention> The adhesive can be applied to the contact area after the phase plate is inserted along the guide groove provided in the feedphone, or after the adhesive has been applied to the phase plate. This is done by inserting it into a feedphone, etc., but in any case, the work of applying the adhesive is troublesome, and the workability is poor because it cannot be moved until the adhesive hardens. In addition, since the joint is hidden inside the feedphone, it is difficult to visually confirm whether the joint is secure.

Therefore, the main object of the present invention is to provide a mechanism that allows a phase plate to be easily and securely fixed by simply inserting it into a feedphone, thereby solving the above-mentioned problems.

<Means for solving the problem> In order to achieve the above object, in the present invention, a guide groove for slidably receiving a plate-shaped phase plate is provided on the opposing inner surfaces of a cylindrical feedphone,
An engaging hole is provided in either one of the guide grooves, and an engaging claw is provided on one edge of the phase plate to elastically protrude, and the phase plate is inserted into the feedphone along the guide groove to enable engagement. The matching claws fit into the engagement holes to fix the phase plate.

<Function> Since the present invention is constructed as described above, by simply inserting the phase plate into the feedphone, the engaging pawls fit into the engaging holes, without using adhesives as in the past, and the engagement claws fit into the engaging holes, allowing one-touch and reliable operation. This can greatly improve the workability of assembly and processing, and reduce production costs by simplifying the work process.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a parabolic antenna, and a feedphone 3 and a BS converter 4 are installed in front of a disc-shaped antenna reflector 2.

The present invention is based on the phase plate 5 in this feedphone 3.
Regarding the mounting mechanism, guide grooves 6, 6 for slidably receiving a plate-shaped phase plate 5 are provided on the opposing inner surfaces of the cylindrical feedphone 3, and either one of the guide grooves 6 An engagement hole 7 is provided in the.

Further, an engaging pawl 8 is provided on one edge of the phase plate 5, and the engaging pawl 8 is inserted into the feedphone 3 along the guide grooves 6, 6. It is configured to fit into the engagement hole 7 and fix the phase plate 5.

As shown in the figure, it is preferable for manufacturing to form the engaging claw 8 integrally with the phase plate 5, and its shape should be designed so that once it is fitted into the engaging hole 7, it cannot easily come out. would be necessary. Furthermore, as shown in the drawings, if the engaging hole 7 is formed through the wall of the feedphone 3, in the event that the phase plate needs to be removed, the engaging claw 8 can be removed from the outside of the feedphone 3 using a thin rod. It can be easily removed by pushing up to release the engagement.

<Effects of the invention> As described above, the present invention provides guide grooves for slidably receiving the plate-shaped phase plate on the opposing inner surfaces of the cylindrical feedphone, and provides an engagement hole in either side of the guide grooves. At the same time, an engaging pawl that elastically projects is provided on one edge of the phase plate, and by inserting this phase plate into the feedphone along the guide groove, the engaging pawl fits into the engaging hole and the phase plate Since the phase plate is configured to be fixed in place, it can be fixed to the feedphone easily and securely by simply inserting the phase plate into the feedphone, without using adhesives like in the past.This improves the work efficiency of assembly processing. Not only can this be greatly improved, but it also has the effect of reducing production costs by simplifying the work process.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a parabolic antenna according to the present invention, FIG. 2 is an exploded perspective view of the main parts, and FIG. 3 is a sectional view showing the process of incorporating a phase plate into a feedphone.
Fig. 4 is a cross-sectional view showing the state in which the phase plate is incorporated into a feedphone, Fig. 5 is a cross-sectional view taken along line A-A in Fig. 3, and Fig. 6 is a cross-sectional view taken along line B-B in Fig. 4. FIG. 1... Parabolic antenna, 3... Feedphone, 5... Phase plate, 6... Guide groove, 7... Engagement hole, 8... Engagement claw.

Claims (1)

[Scope of utility model registration request] A guide groove for slidably receiving a plate-shaped phase plate is provided on the opposing inner surfaces of the cylindrical feedphone, an engaging hole is provided in either one of the guide grooves, and a resilient The phase plate is provided with a protruding engagement claw, and by inserting the phase plate into the feedphone along the guide groove, the engagement claw fits into the engagement hole and fixes the phase plate. parabolic antenna.