JPH0673908U - Primary radiator for parabolic antenna - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a primary radiator for a parabolic antenna that can reduce the number of parts and improve the airtightness of the antenna. [Structure] The horn unit 2 is provided in the case 20 of the parabolic antenna.
3, the converter section 24, and the output plug section 25 were integrally configured and housed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a primary radiator for a parabolic antenna that receives satellite broadcasting (BS), for example.

[0002]

[Prior art]

 A conventional primary radiator for a Bora antenna for receiving satellite broadcasting will be described with reference to FIG. In FIG. 3, the housing 10 of the primary radiator is composed of an upper housing 11 and a lower housing 12 each made of resin. The housing 10 houses a horn portion 13 and a converter portion 14 which are integrally formed by zinc die casting.

An output plug portion 15 for attaching a coaxial cable for connecting to a BS tuner or the like is provided separately from the horn portion 13 and the converter portion 14 so as to project from a part of the housing 20. In addition, 16 is a helical antenna.

[0004]

[Problems to be solved by the device]

 As described above, the conventional parabolic antenna primary radiator is configured separately from the horn portion 13 and the converter portion 14 and the output plug portion 15 for mounting a coaxial cable for connecting to a BS tuner or the like. Was there.

Therefore, in order to prevent water from entering the inside through the gap between the output plug portion 15 and the housing 10, after attaching / assembling a waterproof plug at the end of the coaxial cable, self-adhesive tape, vinyl The tape was attached in double or triple layers. However, there is a limit to the waterproofing method using adhesive tape, and there is a problem that water may enter the inside of the housing.

Further, in the conventional parabolic antenna, the horn unit 13 and the converter unit 14 and the output plug unit 15 for attaching the coaxial cable for connecting to the BS tuner and the like are configured separately, There was a problem that the number of parts increased, the assembly process became complicated, and the manufacturing cost increased.

The present invention has been made in view of the above points, and an object thereof is to provide a primary radiator for a parabolic antenna, which can reduce the number of parts and improve the airtightness of an antenna.

[0008]

[Means for Solving the Problems]

 The present invention is characterized in that the horn portion, the converter portion, and the output plug portion are integrally formed and housed in the housing of the parabolic antenna.

[0009]

[Action]

 According to the present invention configured as described above, the number of antenna parts can be reduced by integrally forming the horn part, the converter part, and the output plug part in the case of the parabolic antenna. Therefore, the manufacturing cost of the parabolic antenna can be reduced. Moreover, since it is possible to completely prevent water from entering the inside of the antenna from the output connector, airtightness can be significantly improved.

[0010]

【Example】

 Hereinafter, a primary radiator for a parabolic antenna according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a primary radiator for a parabolic antenna, and FIG. 2 is a sectional view of a main part of the primary radiator.

In FIG. 1, the housing 20 of the primary radiator is composed of an upper housing 21 and a lower housing 22 made of resin. A horn portion 23, a converter portion 24, and an output plug portion 25 are integrally formed in the housing 20 by zinc die casting.

A coaxial cable to be connected to a BS tuner or the like is connected to the output plug portion 25, and a small diameter portion 31, a large diameter portion 32, and a flange portion 33 are formed on the outer periphery from the mounting port side. ing. The outer periphery of the flange portion 33 is configured to contact the inner surfaces of the upper casing 21 and the lower casing 22. In addition, 34 is a helical antenna and 35 is a feeder. The outer diameter of the flange portion 33 is set to be larger than the outer diameter of the waterproof cap 41 described later.

As described above, since the horn portion 23, the converter portion 24, and the output plug portion 25 are integrally formed by the zinc die-cast in the housing 20 of the parabolic antenna primary radiator, the primary radiation The number of parts that make up the container can be reduced. Therefore, the manufacturing cost can be reduced.

Further, by forming a small diameter portion 31, a large diameter portion 32 and a flange portion 33 from the mounting port side on the outer periphery of the output plug portion 25, the BS tuner from the direction of the arrow A in FIG. After attaching the coaxial cable to be connected to the etc., fit the end of the waterproof cap 41 into the large diameter portion 32 of the output connector 25, and attach it so that the end of the waterproof cap 41 comes into close contact with the side surface of the flange 33. This prevents water that has entered the housing 20 from entering between the end portion of the waterproof cap 41 and the side surface of the flange 33 and entering the inside of the coaxial cable described above, as indicated by arrow B. be able to. The present invention can be applied not only to the primary radiator of the satellite parabolic antenna but also to other parabolic antennas.

[0015]

[Effect of device]

 As described above in detail, according to the present invention, since the horn part, the converter part, and the output plug part are integrally formed by the zinc die casting in the housing, the number of parts forming the primary radiator is reduced. it can. Therefore, the manufacturing cost can be reduced. Further, since the horn unit, the converter unit and the output plug unit are integrally formed, the airtightness between the horn unit, the converter unit and the output plug unit can be remarkably improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a primary radiator for a parabolic antenna according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the main part of the primary radiator of the same embodiment.

FIG. 3 is a cross-sectional view of a conventional primary radiator for a parabolic antenna.

[Explanation of symbols]

20 ... Housing, 21 ... Upper housing, 22 ... Lower housing, 23 ...
Horn part, 24 ... Converter part, 25 ... Output plug part, 3
1 ... Small diameter part, 32 ... Large diameter part, 33 ... Flange part, 41 ...
Waterproof cap.

Claims (1)

[Scope of utility model registration request] 1. A primary radiator for a parabolic antenna, characterized in that a horn portion, a converter portion, and an output plug portion are integrally formed and housed in a casing of the parabolic antenna.