JPH051643B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an antenna device that receives or moves to measure satellite broadcasting.

``Prior Art'' Conventionally, as shown in FIG. 1, in the mobile reception/measurement system, an offset parabolic antenna device was set on a tripod stand 1. That is, the base end of the support arm 3 is screwed onto the back surface of the parabolic reflector 2, and the converter 5 (frequency converter) equipped with the primary radiator 4 at the tip of the support arm 3 is positioned at the focal point of the primary radiator 4. It was screwed in this way. In addition, when setting an offset parabolic antenna device on the antenna mast for reception at a fixed position, please refer to Figures 2 and 3.
It was set as shown in the figure. That is, the reflector 2 is mounted on the antenna mast 6 via the support 7, the support arm 3 is attached to the reflector 2 in the same manner as described above, and the converter 5 equipped with the primary radiator 4 is attached to the tip of the support arm 3. It was installed.

"Problems to be Solved by the Invention" The base end of the support arm 3 on the back surface of the reflector 2 is attached as shown in FIG.
Two screws 10 and 11 are inserted into and screwed into the converter 9, and the front end surface of the converter 5 is screwed onto the tips of the two support arms 3 with screws 12. These have the following problems.

(1) When moving, use the reflector 2, support arm 3,
3. All parts such as converter 5 must be disassembled.

(2) It is difficult to reassemble disassembled parts and it takes a long time to assemble them.

(3) Since all parts are disassembled into pieces, there is a risk of losing screws, washers, etc. required for tightening.

(4) When packaging parts in the manufacturing process, if all parts are disassembled into pieces, the packaging cannot be unified, which is unreasonable and costly; It's hard to know which order to go in.

(5) Even when unpacking, assembling, and repackaging, the parts packaging and the entire packaging must be separated, which is complicated.

(6) During packaging, each part must be wrapped and packaged separately, which is time-consuming and costly.

(7) When a user sets up this antenna device, it is difficult to assemble because each part is separated, and it takes a long time to assemble.

An object of the present invention is to make the support arm foldable with respect to the reflector, the converter foldable with respect to the support arm, and to make the antenna device compact, easy to move, and easy to package and package. .

"Means for Solving the Problems" In order to solve the above problems, the present invention provides a reinforcing flange extending diagonally backward and outward over the entire circumference, and two symmetrical vertical ribs are provided at the center of the back surface. The base ends of the two support arms were screwed to the parabolic reflector that had been placed under the two vertical ribs, and the primary radiator equipped with a converter at the tip of the support arm was positioned at the focal point of the parabolic reflector and screwed. In the antenna device, the support arm is formed into a roughly U-shape, and includes a linear and long support part that supports a converter at the tip, a holding part held by a parabolic reflector, and a connecting part connecting the support part and the holding part. A protrusion is provided on the lower edge of the tip of the holding part, and an inverted L-shaped adjustment slot is carved in the holding part, and the holding part is connected to the inner surface of the reinforcing flange, the back surface of the parabolic reflective surface, and the vertical rib. The tip of the holding part abuts the back surface of the reflective surface, and the screw is inserted into the adjustment slot and screwed into the vertical rib, and the adjustment slot is carved. Fix the holder to the converter, slidably fit the adjusting hole of the holder into the screw screwed into the tip of the support part of the support arm, and fold the primary radiator and converter close to the inside of the reflecting surface of the parabolic reflector. This is an antenna device having a configuration.

"Example" As shown in FIG.
Reference numeral 1 denotes a reflecting surface, on which a reinforcing flange 22 protruding obliquely backward and outward is provided over its entire circumference, and on the back surface of the parabolic reflecting mirror 2 there are two vertical ribs 23 symmetrical to the center.
are provided below the vertical rib 23 with screw holes 24 and 25.
to be drilled.

As shown in FIG. 6, the two support arms 30 each include a holding part 31 that is screwed onto the vertical rib of the parabolic reflector 2, a long linear support part 32 that supports the converter 5 at the tip, and a holding part 31. and support part 32
and a connecting portion 33 that connects the connecting portion 33.
are substantially perpendicular to the support portion 32 and the holding portion 31, respectively, and the support arm 30 is formed approximately in a U-shape. The holding portion 31 is set so as to be in contact with the inner surface 22A of the reinforcing flange 22, the back surface 21A of the parabolic reflecting mirror 21, and the side surface 23A of the vertical rib 23, and the tip 31A of the holding portion 31 is set so as to abut against the back surface 21A of the reflecting surface 21. When the primary radiator 4 at the tip of the converter 5 attached to the tip of the support arm 30 is positioned at the focal point of the parabolic reflector 2, when it is screwed onto the vertical rib 23 with a screw 61. Vertical rib 23 side surface 23A and reflective surface 21 back surface 2 of parabolic reflector 2
1A and the inner surface 22A of the reinforcing flange 22, the lower edge 34 of the tip of the supporting arm 31 is fixed to the inner surface 22A of the reinforcing flange 22.
2 inner surface 22A, and a reinforcing flange 22 distal end surface 22B is formed on this lower edge 34.
A protrusion 35 that engages with is provided in a protruding manner. In addition, the holding part 3
1 below the back surface 21A of the parabolic reflector 2, and the converter 5 must be attached to the tip of the support part 32 to position the primary radiator 4 at the focal point of the parabolic reflector 2. In this embodiment, the lower edge 34 is attached to the support part 32. 3
2. It is formed to have a slight inclination angle θ with respect to the upper edge. By configuring the parabolic reflector 2 and the support arm 30 in this manner, the support arm 30 can be fixed so as not to move up and down and back and forth by tightening the screws 61 when setting the antenna. When this support arm 30 is folded, it must be able to rotate approximately 90 degrees so that it can approach the reflecting surface 21 of the parabolic reflector 2. Even if an attempt is made to rotate the support arm 30 by 90 degrees while it is fixed to the side surface 23A of the vertical rib 23, the holding part 31 will collide with the reflective surface 21 and the reinforcing flange 22, making it impossible to rotate the support arm 30. It is sufficient to cut an adjustment slot in a shape that allows the support arm 30 to move backward and upward when the screw 61 is loosened.
However, in this case, since the support arm 30 and the converter 5 are heavy, it becomes difficult to rotate the screw 61 by 90 degrees. Therefore, an inverted L-shaped adjustment slot 36 is cut, and the lower end 36A
is the rotation point, and the upper end portion 36B is the fixed point. The adjustment elongated hole 36 has a longitudinal groove cut perpendicularly to the lower edge 34 and a horizontal groove cut parallel to the lower edge 34. Although the adjustment slot 36 is formed into a right-angled shape, it may also be formed into an arcuate shape or an inverted dogleg shape. When the screw 61 is positioned in the lower end 36A of the adjustment slot 36 and rotated, the rear part of the protrusion 35 of the support arm 30 will just hit the reinforcing flange 22. To avoid this, the inner surface of the connecting part 33 should be turned into the arcuate surface 37. need to be formed. The tip of the support part 32 is formed into an arc shape 38 so that it can be easily attached to the holder 50.

The retainer 50 has screws 62 on the front end surface of the converter 5.
the support part 3 of the support arm 30 so that the primary radiator 4 and converter 5 face the direction of the reflected wave of the parabolic reflector 2 and can be folded.
2. Formed so that it can be fixed at the tip. That is,
As shown in FIGS. 7 and 8, the holder 50 projects diagonally forward and downward from the front end surface of the converter 5 in two directions, and the upper and lower edges of the holder 50 are arranged so that the holder 50 can be fixed to the tip of the support part 32 of the support arm 30. The guide pieces 51 and 52 are formed by bending them inward, respectively.
The tip of the support portion 32 is set to be slidable between the two. A screw 63 is installed in the center of the holder 50 to prevent the converter from wobbling at the tip of the support part 32.
A linear long adjustment hole 53 is cut in the longitudinal direction so that it can slide. The screw 63 is inserted into the adjustment slot 53 and screwed into the screw hole 39 at the tip of the support part 32, and the engagement hole 40 has a protrusion 54 formed by bending the tip of the holder 50 inward and protrudes from the tip of the support part 32. is engaged with and fixed to the support arm 30.

"Function" When the antenna device constructed as described above is installed and is receiving satellite broadcasting, it is fixedly installed and can provide good reception, as shown in FIG. Then, when moving the product or storing it in a package cage at a production factory, as shown in FIG. The converter 5 is folded inwardly against the support arm 30, and the support arm 3
0 is moved upward relative to the parabolic reflector 2 and further retreated so that the screw 61 is located at the lower end 36A so that it does not interfere with the parabolic reflector 2.
It can be folded to the side to create a compact shape. In the folded state, the screw 63 is moved from the fixed position of the adjustment slot 53 when the antenna is installed and is located at the other end. At this time, since the guide piece 52 of the holder 50 is set shorter than the guide piece 51, it does not interfere with the tip of the support arm 30 and the converter 5
It is easy to fold. Since the protrusion 54 engages with the engagement hole 40 of the support part 32 and the guide piece 51 is in contact with the tip of the support part 32, the holder 50
is held without wobbling, and the primary radiator 4 is accurately positioned at the focus of the parabolic reflector 2. moreover,
The guide piece 51 is attached to the support arm 30 in the folded state.
The converter 5 is set so as to be able to come into contact with the tip edge so that the converter 5 can be fixed without wobbling. Also, to install the antenna, reversely extend it, unfold it, and tighten the screws 63 and 61 to fix it. At this time, the screws 63 and 61 are set at the upper end of the adjustment slot 53 and the upper end 36B of the adjustment slot 36, respectively, so by tightening the screws 63 and 61 at these positions, The converter 5 can be fixed at the tip of the support arm 30, and the support arm 30 can be fixed to the parabolic reflector 2. If the screw 61 alone is insufficient when installing the antenna, it is also possible to use a separately removable screw, insert it into the adjustment elongated hole 36A, and screw the support arm 30 through the screw hole 25.

"Effects of the Invention" As described above, the present invention provides a parabolic reflector with a reinforcing flange extending diagonally outward over the entire circumference and two vertical ribs symmetrical about the center of the back surface. This is an antenna device in which the base ends of two support arms are screwed to the bottom of the rib, and a primary radiator equipped with a converter is positioned at the focal point of a parabolic reflector at the tip of the support arm, and the converter is screwed to the tip. The support arm is formed into a roughly U-shape, and includes a linear and long support part that supports the parabolic reflector, a holding part that is held by the parabolic reflector, and a connecting part that connects the support part and the holding part. A protrusion is provided on the lower edge of the tip, an inverted L-shaped adjustment hole is carved in the holding part, and the holding part is set so as to be in contact with the inner surface of the reinforcing flange, the back surface of the parabolic reflective surface, and the side surface of the vertical rib. The tip of the holding part is formed so that it abuts the back surface of the reflective surface,
Insert the screw into the adjustment slot mentioned above and screw it into the vertical rib, fix the holder with the adjustment slot carved into the converter, and screw the adjustment slot of the holder onto the tip of the support part of the support arm. This antenna device has a structure in which the primary radiator and converter can be folded up close to the inside of the reflecting surface of the parabolic reflector.The support arm can be folded against the reflector, and the converter is also foldable against the support arm. Since the antenna device can be folded, the antenna device becomes compact and easy to move, as well as easy to wrap and pack. Further, since the parts are not disassembled into pieces, there is no chance of losing screw parts such as screws and washers. Furthermore, since the packaging can be unified rather than disjointed, it is easy to assemble, and it is also easy to assemble and repackage after taking it out of the packaging. Furthermore, even when a general user sets up the antenna device, it is very easy to assemble because it is a foldable system.

In the present invention, since the reflecting mirror is supported by two support arms, stable support can be achieved. Furthermore, since the holding portion of the support arm is provided with an inverted L-shaped adjustment slot, the primary radiator and converter can be folded smoothly with respect to the reflector. Furthermore, the holding part of the support arm is formed such that the protrusion and the tip of the holding part abut against the back surface of the reflector, so that when the primary radiator is positioned at the focal point of the reflector, the protrusion faces outward. engaging the flange;
It can be positioned stably. Moreover, when folded, it does not collide with the inner surface of the reflecting mirror.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional antenna, FIG. 2 is a front view of an antenna device using a conventional antenna mast, FIG. 3 is a side view of FIG. 2, and FIG. 4 is a perspective view of a conventional support arm. Fig. 5 is a vertical cross-sectional view of the attached state of the support arm of the reflector of the present invention, Fig. 6 is a side view of the support arm, Fig. 7 is a side view of the converter equipped with the primary radiator, and Fig. 8 is the primary radiator. FIG. 9 is a perspective view of a converter equipped with a radiator, FIG. 9 is a side view showing the antenna installation state of the antenna device, and FIG. 10 is a side view showing the antenna device in a folded state. 22... Reinforcement flange, 23... Vertical rib, 2...
... Parabolic reflector, 30 ... Support arm, 4 ...
Primary radiator, 5...Converter, 32...Support part, 31...Holding part, 33...Connecting part, 35...
Projection, 36...adjustment slot.

Claims (1)

[Claims] 1 A reinforcing flange 22 protruding diagonally backward and outward over the entire circumference, and two vertical ribs 2 symmetrical about the center of the back surface.
Two vertical ribs 23 on the parabolic reflector 2 provided with 3
An antenna device in which the base ends of two support arms 30 are screwed downward, and a primary radiator 4 equipped with a converter 5 at the tip of the support arms 30 is positioned at the focal point of a parabolic reflector 2 and screwed. , the support arm 30 is made up of a linear and long support part 32 that supports the converter 5 at its tip, a holding part 31 held by the parabolic reflector 2, and a connecting part 33 that connects the support part 32 and the holding part 31. The holding part 31 is formed into a roughly U-shape, a protrusion 35 is provided protruding from the lower edge of the tip of the holding part 31 , and an inverted L-shaped adjustment slot 36 is carved in the holding part 31 . 22
A. It is set so that it touches the back surface 21A of the parabolic reflective surface 21 and the side surface 23A of the vertical rib 23, and the tip of the holding part 31 is formed so as to abut against the back surface 21A of the reflective surface, and the screw 61 is inserted into the adjustment slot described above. 36 and screwed onto the vertical ribs 23, the holder 50 having an adjustment elongated hole 53 is fixed to the converter 5, and the adjustment elongated hole 53 of the holder 50 is inserted into the support part 3 of the support arm 30.
2. The antenna device has a structure in which the primary radiator 4 and the converter 5 are folded up close to the inside of the reflecting surface 21 of the parabolic reflector 2 by being slidably fitted into a screw 63 screwed onto the tip of the antenna device 2.