JP2624611B2 - Satellite dish receiving parabolic antenna with polar mount - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite broadcast receiving parabolic antenna having a polar mount for receiving radio waves from a plurality of broadcast satellites in a geosynchronous orbit.

[0002]

2. Description of the Related Art When a single parabolic antenna receives radio waves from a plurality of broadcasting (communication) satellites located in a geosynchronous orbit, the elevation angle and azimuth of an arbitrary geostationary satellite from the receiving point are geometric. Since it is accurately obtained by the calculation, the elevation angle and the azimuth of the parabolic antenna are adjusted, and the radio wave from the geostationary satellite is received. In this state, the parabola antenna is directly facing south, and the polar mount is rotated with the polar axis of the polar mount as a support axis, so that radio waves from a plurality of broadcast satellites in geosynchronous orbit can be sequentially received. At this time, an actuator is used to rotate the parabolic reflector.

When a small-sized parabolic antenna tries to receive radio waves from a plurality of broadcasting satellites at home with the start of CS broadcasting, a wheel worm gear and an actuator are required to rotationally drive a parabolic reflector mounted on a polar mount. Is required. FIGS. 5 and 6 show a conventional satellite dish receiving parabolic antenna. Parabolic reflector
101 is a bolt that can be adjusted and fixed at the top of the mast 102
A mast mount 103 to which is mounted a 109 is provided, and the wheel worm gear unit 104 and the actuator 105 are separated and three-dimensionally interposed with the mast mount 103 interposed therebetween.

The wheel worm gear unit 104 includes:
An elevation adjustment bracket 109 adjusts the elevation of a protruding piece that is pivotally mounted on the upper portion of the mast mount 103 and that protrudes from the middle of the mast mount 103 with the pivoted shaft as a support shaft. Further, a parabolic reflector mounting fixture 107 is provided on the upper surface of the wheel worm gear unit 104. As the actuator unit 105, a motor, a speed reducer, a gear, a sensor, and a limit switch are integrally formed, and the limit switch operates via a gear.

[0005] A converter with a primary radiator is provided at the focal position of the parabolic reflector via a support arm.

[0006]

As described above, the conventional polar mount of the satellite dish receiving parabolic antenna is as follows.
The wheel worm gear unit section 104 and the actuator section 105 are arranged in a three-dimensionally intersecting manner, have a large number of parts, are extremely complicated in structure, heavy in weight, costly, take a long time to assemble, and The corners are mounted on the upper surface of the wheel worm gear unit 104.
With 107, there was no room for engraving the angle indication on the housing.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention provides a satellite broadcast receiving parabolic antenna having a polar mount that is large and heavy in a combination of a wheel worm gear unit 104 and an actuator 105. Because it has a complicated structure, the wheel worm gear unit and actuator are integrated to make it compact and easy to assemble and install.
A satellite broadcast receiver having a pole mount provided with an azimuth adjusting means at the upper end of a standing pole, and a polar mount having a polar mount for rotating and driving the parabolic reflector between the parabolic reflector and the pole mount. In a parabolic antenna for use, a motor and a worm gear are housed in the main body of a polar mount driving section composed of a cover and a main body, and a polar axis for rotating a parabolic reflector in the direction of a stationary satellite via an arm is erected. A wheel worm gear externally fitted and fixed to the polar shaft is arranged so as to mesh with the worm gear, a reduction gear is interposed between the motor and the worm gear, the main body is covered with a cover, and the polar shaft is put on the cover. This is a satellite dish receiving parabolic antenna having a protruding polar mount.

[0008]

[Function] A wheel worm gear unit and an actuator unit are accommodated in a housing, and a parabolic reflector is directed in the direction of each geostationary satellite via an arm by rotating a polar shaft protruding from an upper surface of the housing. Can receive.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to specific embodiments shown in FIGS. FIG. 1 shows an overall outline of a satellite dish receiving parabolic antenna. In the offset type parabolic reflector 1, an antenna mounting bracket 6 is attached to the back of the reflector, and a polar mount is provided behind it.
11 is rotatably provided, and is mounted below the pole 2 at the upper end of the pole 2 with a pole mounting portion 3 rotatable in the azimuth direction. Reference numeral 4 denotes a converter having a primary radiator. The primary radiator and the converter 4 are attached to the parabolic reflector 1 via a support arm 7 and are located at the focal point of the parabolic reflector 1. Reference numeral 5 denotes a pole mounting part 3 for adjusting the direction.
Is a U-bolt for fixing the pole to the pole.

In this parabolic reflector 1, in order to receive radio waves from a plurality of broadcast satellites or communication satellites in a geosynchronous orbit above the equator, they must be accurately opposed to each broadcast satellite. A wheel worm gear, an actuator, and the like are accommodated in the housing of the polar mount 11, and the arm 13 connected to the parabolic reflector mounting fixture 6 is rotated by the rotation of the polar shaft 12 to move the parabolic reflector 1 on a geosynchronous orbit. Point to each broadcast satellite. Reference numeral 14 denotes an elevation adjustment tool, and reference numeral 15 denotes a depression angle adjustment tool.

FIG. 2 is an enlarged perspective view of the polar mount 11, and FIG. 3 is an exploded perspective view of the polar mount 11 containing a wheel worm gear, an actuator and the like. As shown in FIG. 3, the housing of the polar mount 11 is composed of a main body 21 and a cover 22, both of which are container-shaped having peripheral walls 23 and 24, and the upper surface of the peripheral wall 23 of the main body 21 and the peripheral wall 24 of the cover 22. The lower surface is brought into contact with the lower surface and screwed with the screw 25.

As shown in FIG. 4, a motor 26 and a worm gear 27 are accommodated in the lower housing 21 in a parallel and parallel manner.
A wheel worm gear 28 that is fixed to the polar shaft 12 by standing up the polar shaft 12 is arranged so as to mesh with the worm gear 27, and the housing space is reduced so that the motor 26
The reduction gear 29 is interposed between the worm gear 27 and the
21 is covered with a cover 22, and the polar shaft 12 is projected onto the cover 22. With this arrangement, the rotating shaft of the motor 26 and the worm gear 27 are parallel in a horizontal plane, and the wheel worm gear 28 can be arranged on the same horizontal plane. Therefore, the lower housing for accommodating these drive unit structures can have a thin planar inner volume of the housing, and furthermore, it is easy to arrange the control system functional units.

Reference numeral 31 denotes a bearing plate of the polar shaft 12, reference numeral 32 denotes a worm gear mount, reference numeral 33 denotes a limit switch for limiting the rotation angle of the polar shaft 12, reference numeral 34 denotes a sensor unit, and reference numeral 35 denotes an engraved rotation angle scale. When the rotation signal is detected by the sensor of the sensor unit 34, the motor 26 starts and the worm gear 27 is driven by the reduction gear 29, then the wheel worm gear 28 rotates, and the arm 13 rotates around the polar shaft 12. The moving parabolic reflector 1 can be directed to a predetermined broadcasting satellite.

In order to drive the polar mount, a control signal generator (not shown) is connected to the control terminal section 36 via a control signal cable, and the control signal generator is operated to generate a control signal. Perform a predetermined rotation.

[0015]

As described above, according to the present invention, the pole mounting portion provided with the azimuth adjusting means is mounted on the upper end of the standing pole, and the parabolic reflecting mirror is rotationally driven between the parabolic reflecting mirror and the pole mounting portion. In a satellite broadcast receiving parabolic antenna having a polar mount with a polar mount interposed, a motor and a worm gear are accommodated in the main body in a housing of a polar mount driving section including a cover and a main body, and a parabolic reflector is provided. A polar shaft that rotates through the arm in the direction of the geostationary satellite is erected, and a wheel worm gear externally fitted to and attached to the polar shaft is arranged so as to mesh with the worm gear, and a reduction gear is provided between the motor and the worm gear. A satellite broadcast receiving parameter having a polar mount in which the main body is covered with a cover and the polar axis is projected above the cover Since the antenna is a conventional antenna, the wheel worm gear unit and the actuator are separated and three-dimensionally intersected. The number of parts can be reduced, the number of parts is reduced, the structure is extremely simple, the weight is low, the cost is low, the assembly time is short, and the rotation angle display can be stamped on the outside of the housing. Was. This display clarifies the position where the parabolic antenna has been driven and stopped, and is convenient because the name and communication status of the receiving satellite can be confirmed. Furthermore, since the motor, gear, worm gear, and wheel worm gear of the drive unit are arranged in parallel and parallel, the motor drive force does not cause loss in each transmission unit, it can be transmitted at the shortest distance, and the polar shaft It can be provided vertically. Thus, the antenna can be mounted on the top of the antenna mounting mast in a smart and compact housing shape.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the general outline of a satellite dish receiving parabolic antenna according to the present invention.

FIG. 2 is an enlarged perspective view of a polar mount section of the present invention.

FIG. 3 is an exploded perspective view of a polar mount accommodating a wheel worm gear, an actuator, and the like.

FIG. 4 is a plan view showing a state where a motor, a worm gear, a wheel worm gear, a polar shaft, and the like are housed in the main body of the present invention.

FIG. 5 is a perspective view showing the general outline of a conventional satellite dish receiving parabolic antenna.

FIG. 6 is a perspective view of a conventional satellite dish receiving parabolic antenna.

[Explanation of symbols]

 2 ... Pole 3 ... Pole mounting part 1 ... Parabolic reflector 11 ... Polar mount 21 ... Body 27 ... Worm gear 13 ... Arm 12 ... Polar shaft 28 ... Wheel worm gear 29 ... Reduction gear

Claims (1)

(57) [Claims] 1. A polar mount having a pole mounting portion provided with an azimuth adjusting means mounted on an upper end of a standing pole, and a polar mount for rotating and driving the parabolic reflector interposed between the parabolic reflector and the pole mounting portion. In a satellite dish for receiving satellite broadcasting, a motor and a worm gear are housed in a body of a polar mount driving unit including a cover and a body, and a parabolic reflector is turned in the direction of a stationary satellite via an arm. Erecting the polar shaft to be moved, and disposing the wheel worm gear fitted and pivotally fitted on the polar shaft so as to mesh with the worm gear,
A satellite dish receiving parabolic antenna having a polar mount in which a reduction gear is interposed between a motor and a worm gear, a main body is covered with a cover, and a polar shaft is projected above the cover.