JPH0658612U - Antenna drive - Google Patents

Abstract

(57) [Abstract] [Purpose] An antenna drive device in which the gear motor portion is made compact by using a spur gear or a belt for connecting the gear motor and the worm gear. [Structure] 1 is a gear motor, and a shaft of the gear motor 1 is provided with a first spur gear 2. Reference numeral 3 denotes a worm gear, and a second spur gear is provided on the shaft of the worm gear 3. The gear motor 1 and the worm gear 3 have the first spur gear 2 and the second gear 4 provided on the respective shafts. Are arranged so that they mesh with each other. Further, a worm wheel 5 is provided at a position that meshes with the worm gear 3. This worm wheel 5 has an antenna body 6
Is installed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drive device for an antenna for receiving satellite broadcasting, and more particularly to a drive device for an antenna that receives electric waves from a plurality of satellites with a single antenna.

[0002]

[Prior art]

 In an antenna driving device for broadcast reception that receives radio waves from multiple satellites with a single antenna, the elevation angle direction of the antenna is set on the antenna body in order to receive radio waves from multiple satellites. The antenna is adjusted and fixed in advance in a predetermined direction, and the azimuth angle direction of the antenna is adjusted by rotating the driving device provided in the antenna body parallel to the equatorial plane. In this drive device, the rotation of the gear motor 1 is transmitted to the worm wheel 5 via the worm gear 3 as shown in FIG. 2, and the antenna body 6 fixed to the worm wheel 5 rotates. However, since the gear motor 1 is arranged outside the worm gear box in which the worm wheel 5 and the worm gear 3 are housed, there is a problem in that it cannot be downsized or have a waterproof structure. .

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and it is possible to reduce the size of an antenna drive device for broadcast reception in which radio waves from a plurality of satellites are received by one antenna, and an integrated waterproof structure is provided. It provides an antenna drive device that can

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a worm gear on the shaft of a gear motor for broadcast reception that receives radio waves from a plurality of satellites with a single antenna, and places it in a position meshing with the worm gear In an antenna drive device in which a worm wheel is provided to rotate the main body of the antenna fixed to the worm wheel, a first spur gear is provided on the shaft of the gear motor, and the first spur gear is provided on the shaft of the worm gear. The second spur gear is provided at a position where the worm gear is meshed with the worm wheel, and the worm wheel is provided at a position where the worm gear is meshed with the worm gear.

[0005]

[Action]

 Since the antenna driving device according to the present invention is configured as described above, the power of the gear motor is transmitted to the worm gear via the first spur gear and the second spur gear, so that the size can be reduced. The worm wheel, worm gear, and gear motor can be housed in the same box for a waterproof structure.

[0006]

【Example】

 Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of the essential parts of an embodiment of an antenna driving device according to the present invention. In the figure, 1 is a gear motor, and a shaft of the gear motor 1 is provided with a first spur gear 2. Reference numeral 3 is a worm gear, and a second spur gear is provided on the shaft of the worm gear 3. The gear motor 1 and the worm gear 3 have the first spur gear 2 and the second gear provided on the respective shafts. 4 are arranged at positions where they mesh with each other. Further, a worm wheel 5 is provided at a position where it meshes with the worm gear 3, and an antenna body 6 is attached to the worm wheel 5. Although not shown, the worm wheel 5, the worm gear 3, the gear motor 1, and the first and second spur gears 2 and 4 may be housed in the same box to provide a waterproof structure. Further, even if a belt or the like is used instead of the first gear 2 and the second gear 4 to transmit the rotation of the gear motor 1 to the worm gear 3, the same effect can be expected.

[0007]

[Effect of device]

 As described above, in the antenna drive device according to the present invention, the power of the gear motor is transmitted to the worm gear via the first spur gear and the second spur gear, so that the size can be reduced. The worm wheel, worm gear, and gear motor can be housed in the same box for a waterproof structure.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part of an embodiment of an antenna driving device according to the present invention.

FIG. 2 is a main part configuration diagram of an example of a conventional antenna driving device.

[Explanation of symbols]

 1 Gear Motor 2 1st Spur Gear 3 Worm Gear 4 2nd Spur Gear 5 Worm Wheel 6 Antenna Body

Claims (1)

[Scope of utility model registration request] 1. A worm gear is provided on a shaft of a broadcast receiving gear motor adapted to receive radio waves from a plurality of satellites with a single antenna, and a worm wheel is provided at a position meshing with the worm gear. In an antenna drive device in which an antenna body fixed to the worm wheel is rotated, a first spur gear is provided on a shaft of a gear motor, and a second spur gear is provided on a shaft of the worm gear at a position meshing with the first spur gear.
An antenna drive device comprising a spur gear and a worm wheel provided at a position meshing with the worm gear.