JPH1022714A - Mast holder folding structure for antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower a packing height, to make a structure be relatively simple and to reduce packing materials, a transportation cost and the component unit price by connecting the rib of an antenna for reception and the mast holder of a U-shaped cross section by a bolt and making it foldable. SOLUTION: The two ribs 21 are parallelly projectingly provided in the back surface vertical direction of the antenna 2 for satellite broadcasting reception. Also, the mast holder 1 of the U-shaped cross section extended from both sides are joined to the ribs 21 through the bolts and the mast holder 1 is made foldable to the antenna 2 for the reception. That is, an elevation angle center hole 23 is pierced at the upper part of the rib 21 and an elevation angle adjustment circular arcuate oblong hole 22 is pierced at a lower part respectively. In the meantime, a folding circular arcuate oblong hole 16 and a folding center square hole 15 are respectively pierced at the respectively corresponding parts of the mast holder 1, the bolts 51 and 52 are inserted to the respective ones and the mast holder 1 is made foldable to the antenna 2 for the reception. Thus, the packing height is lowered and the packing materials, the transportation cost and the component unit price are reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna mast holder folding structure.

[0002]

2. Description of the Related Art In general, a parabolic reflector antenna is used with a mast sandwiched between a mount and a holding member with a mount interposed on the center rear surface of the antenna and fixed with bolts. For this reason, in the packed state, the mount protrudes from the back surface of the parabolic reflector antenna, so that the packing box for accommodating these mounts is thick.

In order to make the thickness of the packing box as thin as possible,
As shown in FIG. 8, an arc-shaped notch 103 is opened at an end 102 a of the mount 102, not an arc-shaped elongated hole that limits the movement range of the elevation adjustment screw 101 b, and the center of the support screw 101 a is centered. To the mast holder 10 in the direction of arrow A.
4 is rotated by 180 ° and folded.
Reference numeral 105 indicates a parabolic reflector antenna, and reference numeral 10
6 is the mast.

In the example shown in FIG.
01 is not an arc-shaped long hole whose movement range is restricted, but an arc-shaped notch 203 is opened at the end 202a of the mount 202, and the mast holder 202 is turned around the support shaft 200 in the direction of arrow B. Folds by rotating 90 °. In addition,
Reference numeral 205 denotes a parabolic reflector antenna, and reference numeral 206 denotes a mast.

[0005]

As shown in FIGS. 8 and 9, the mount is folded. In the case of FIGS. 8 and 9, the mount is folded by rotating beyond the elevation adjustable range as an extension of the elevation change. I have. Usually, the range in which the elevation angle adjustment screw moves is an arc-shaped long hole, but is formed as an arc-shaped notch because the rotation angle of folding is large. The provision of the arc-shaped notch greatly reduces the strength and reinforces the portion, thereby increasing the component cost. Furthermore, since the mast holder is merely connected to the mount and the support shaft in a folded state, and is not fixed, the parabolic reflector antenna with rattling and other attached parts during transportation may be damaged. For this reason, parts and the like for fixing the mast holder so as not to rattle in the folded state are required.

[0006]

SUMMARY OF THE INVENTION In view of the above circumstances, the invention according to claim 1 reduces the packing height by folding the mast holder, and reduces the packing material with a relatively simple structure.・ In order to reduce transportation costs and unit prices, two ribs are protruded in parallel in the vertical direction on the back side of the satellite broadcast receiving antenna, and have a base piece and side pieces extending from both sides of the base piece. A mast holder folding structure of an antenna in which a mast holder having a U-shaped cross section is externally fitted to the rib, and a mast holder is folded with respect to a satellite broadcast receiving antenna by inserting bolts into the side pieces and the rib, An elevation center hole above the rib of the satellite broadcast receiving antenna,
Elevation angle adjustment arc-shaped long holes are respectively formed in the lower portion, and a folded arc-shaped long hole is provided at a position corresponding to the elevation angle center hole on the side piece of the mast holder, and a folding center is provided at a position corresponding to the elevation angle adjustment arc-shaped long hole. Square holes are respectively formed, bolts are inserted through the folded arc-shaped long holes and the elevation center hole, bolts are inserted into the folded center square holes and the elevation adjustment arc-shaped long holes, and the mast holder is used for receiving satellite broadcasting. The antenna has a mast holder folding structure that can be folded.

According to a second aspect of the present invention, as a specific example, a nut is screwed onto each of the bolts, and the elevation angle of the satellite broadcast receiving antenna is adjusted by screwing the nut. The antenna mast holder is folded. Further, in order to strengthen the positioning of the bolt, the invention according to claim 3 has a structure in which the folding arc-shaped long hole is provided with a fixing projection for positioning the bolt at a position serving as the elevation axis.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a first embodiment of the present invention; FIG. FIG. 1 shows an overall overview. Mast holder 1
A satellite broadcast receiving antenna, for example, a parabolic reflector antenna 2 is attached to the
The mast 5 is sandwiched between and fixed with the bolt 4. The support arm 6 is provided with a screw 7 below the back surface of the parabolic reflector antenna 2.
And a converter with a primary radiator is attached to the tip of the support arm 6. Reference numeral 13 denotes a screw hole into which the bolt 4 is screwed.

As shown in FIG. 2, two ribs 21 are provided in parallel in a vertical direction on the back surface of the parabolic reflector antenna 2. The central portions of the ribs 21 are formed in the wide portions 66, and the elevation center holes 23.2 are formed above the wide portions 66.
3 are formed in the lower portions of the wide portions 66 and 66, and the elevation-adjustment arc-shaped elongated holes 22 and 22 are formed around the elevation-angle central holes 23 and 23.
Drilling.

In order to increase the strength of the ribs 21 and 21, the ribs 21 and 2 are provided by horizontal reinforcing ribs 24, 24, 25 and 25.
1 is connected. The mast holder 1 is made of sheet metal and
1 and side pieces 14, 14 extending on both sides of the base piece 11. The distance between the side pieces 14, 14 is such that the inner surface thereof comes into contact with the outer surfaces of the ribs 21, 21 of the parabolic reflector antenna 2. Formed.

Elevation center holes 23 of the parabolic reflector antenna 2 of the side pieces 14 of the mast holder 1
The folding arc-shaped long holes 16 are drilled at the locations corresponding to the above, and the folding center square holes 15 are drilled at the locations corresponding to the elevation angle adjusting arc-shaped elongated holes 22. An elevation center angle root bolt 51 is inserted into the folding arc-shaped elongated holes 16 and the elevation center holes 23, and a nut 61 is screwed to the end thereof. The prism 67 in the vicinity of the head of the elevation center square root bolt 51 is formed in a size that can pass through the folded arc-shaped elongated hole 16.

On the other hand, the folding center angle root bolt 52 is inserted into the folding center angle holes 15 and the elevation angle adjusting arc-shaped long holes 22, and a nut 62 is screwed to the end thereof. The prism 68 in the vicinity of the head of the folding center square root bolt 52 fits into the folding center square hole 15 and the folding center square root bolt 5
Numeral 2 is formed to have a size that allows passage in the elevation angle adjusting arc-shaped long hole 22.

Here, the elevation adjusting arc-shaped long holes 22 of the parabolic reflector antenna 2 are located on a radius arc centered on the elevation center holes 23, and the elevation adjusting arc-shaped long holes 22 are provided. Is determined based on the range necessary for the elevation angle adjustment. In addition, the folding arc-shaped long holes 16
Are located on a circular arc centered on the folding center square holes 15 and the length of the folding arc-shaped long holes 16 is set based on the range required for folding.

Folded arc-shaped long hole 1 of mast holder 1
When the elevation center angle root bolts 51 are located at the elevation center ends 69, 69, the position fixing protrusions 17, slightly bulge in the outer surface direction so as not to move toward the folding ends 70, 70. Let me out. FIGS. 3 and 4 show the ribs 21 on the rear surface of the parabolic reflector antenna 2, the wide portions 66 and 66 thereof, the elevation center holes 23 and 23, and the elevation adjustment arc-shaped elongated holes 22 and 22.

Rib 2 on the back of parabolic reflector antenna 2
The mast holder 1 is externally fitted to the outer surfaces of the side pieces 14 and 21 so as to abut against the inner surfaces of the side pieces 14 and 14, and the elevation center angle root bolt 51 is folded into the folded arc-shaped long holes 16 and 16 of the side pieces 14 and 14.
And it is inserted into the elevation center holes 23 and screwed with the nut 61. On the other hand, the fold center square root bolt 52 is provided with the fold center square holes 15 and the elevation adjustment arc-shaped long holes 22.
22 and a nut 62 is screwed onto the tip.

FIG. 5 shows a state in which the mast holder 1 is folded with respect to the parabolic reflector antenna 2, and FIG. 6 shows a state in which the mast holder 1 is raised and the elevation angle θ of the parabolic reflector antenna 2 is maximum. FIG. 7 shows a state where the mast holder 1 is rotated and the elevation angle is minimum. Referring to FIG. 5 in detail, FIG. 5 shows a state in which the mast holder 1 is folded down with respect to the parabolic reflector antenna 2 to have the lowest height and is suitable for packing. In this state, the elevation center angle root bolt 51 is located at the folded end portions 70 of the folded arc-shaped long holes 16, and the folding center angle root bolt 52 is located at the elevation adjustment arc-shaped long holes 22. Are located at the folded ends 71, 71.

From the state shown in FIG. 5, the nut 61 and the nut 62 are loosened, and the mast holder 1 is rotated in the direction A about the folding center square root bolt 52. Then, the elevation center angle root bolt 51 is folded into the arc-shaped long hole 16.
Inside, and finally climbs over the position fixing projections 17, 17, and the center of elevation 69 of the folded arc-shaped long holes 16, 16.
・ It is located at 69. This state is shown in FIG.
When the nut 61 is lightly tightened, the elevation center angle root bolt 51 is located at the elevation center end portion 69, and the nut 61 has position fixing protrusions 17 at the folded end portion 70. Bolt 51 is folded end 70
Do not move toward
Is the rotation axis for the elevation adjustment.

When the mast holder 1 is rotated in the direction B from the state shown in FIG. 6, the mast holder 1 rotates about the elevation center angle root bolt 51, and the folding center angle root bolt 52 becomes the elevation adjustment arc-shaped elongated hole. 22 ・ 22 folded end 7
Move from 1.71 to the minimum elevation angle end 72.72. This is the state shown in FIG. After adjusting the elevation angle θ to be received by the parabolic reflector antenna 2, the nut 62
And the nut 61 are tightened.

In the above example, the operation from the time of packing to the setting of the elevation angle has been described. However, when the used parabolic reflector antenna is folded, the above operation may be performed in reverse. Furthermore, in the above example, a parabolic reflector antenna was used, but a planar antenna may be used.

[0020]

According to the first aspect of the present invention, as described above,
Two ribs protrude in parallel in the vertical direction on the back side of the satellite broadcast receiving antenna, and a mast holder having a U-shaped cross section having a base piece and side pieces extending from both sides of the base piece is externally fitted to the rib,
A mast holder folding structure of an antenna in which a bolt is inserted into a side piece and a rib so that a mast holder can be folded with respect to a satellite broadcast receiving antenna, and an elevation center hole is provided above the rib of the satellite broadcast receiving antenna. In the lower part, an elevation angle adjusting arc-shaped long hole is respectively formed, and a folded arc-shaped long hole is provided at a position corresponding to the elevation angle center hole of the side piece of the mast holder, at a position corresponding to the elevation angle adjusting arc-shaped long hole. The folding center square holes are respectively formed, bolts are inserted through the folding arc-shaped long holes and the elevation center hole, bolts are inserted through the folding center square holes and the elevation adjusting arc-shaped long holes, and the mast holder is satellite broadcast. Since the antenna mast holder foldable structure that can be folded with respect to the receiving antenna, the mast holder can be folded,
The packaging height can be reduced, and the packaging material, transportation cost, component unit price, etc. can be reduced with a relatively simple structure.

According to a second aspect of the present invention, there is provided an antenna mast holder folding structure in which a nut is screwed to each of the bolts, and the elevation angle of the satellite broadcast receiving antenna is adjusted by screwing the nut. Therefore, the elevation angle of the satellite broadcast receiving antenna can be adjusted by screwing each nut. According to the third aspect of the present invention, the folding arc-shaped long hole is provided with the fixing protrusion for positioning the bolt at the position serving as the center axis of elevation, so that the bolt can be firmly positioned, and the center axis of elevation is shifted. The elevation angle can be adjusted smoothly without any problem.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the general outline of the present invention.

FIG. 2 is an exploded perspective view of the present invention.

FIG. 3 is a rear view of a main part of the parabolic reflector antenna according to the present invention.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a side view of a mast holder folded into a parabolic reflector antenna when packing.

FIG. 6 is a side view when the mast holder is rotated and the elevation angle is maximum.

FIG. 7 is a side view when the mast holder is rotated to minimize the elevation angle.

FIG. 8 is a side view of a conventional antenna mast holder folding structure.

FIG. 9 is a side view of another conventional antenna mast holder folding structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Mast holder 2 ... Parabolic reflector antenna 3 ... Holder 4 ... Bolt 5 ... Mast 6 ... Support arm 15 ... Folding center square hole 16 ... Folding arc-shaped long hole 17 ... Position fixing protrusion 21 ... Rib 22 ... Elevation angle adjustment Circular long hole 23 ... Elevation center hole 51 ... Elevation center square root bolt 52 ... Folding center square root bolt 61 ... Nut 62 ... Nut 66 ... Wide width part 67 ... Square pillar part 68 ... Square pillar part 69 ... Elevation angle center end part 70 ... Folding End 71 ... Folded end 72 ... Elevation angle minimum end

Claims (3)

[Claims] 1. A mast holder having a U-shaped cross-section having a base and a side piece extending from both sides of the base is provided with two ribs protruding in parallel in a vertical direction on a rear surface of the satellite broadcast receiving antenna. Mast holder folding structure of an antenna in which a mast holder is folded with respect to a satellite broadcast receiving antenna by inserting a bolt into the side piece and the rib, wherein the rib of the satellite broadcast receiving antenna is An elevation center hole is formed in the upper part, and an elevation adjustment arc-shaped long hole is formed in the lower part, and a folded arc-shaped long hole is formed in a portion of the side piece of the mast holder corresponding to the elevation center hole, and the elevation angle adjustment arc-shaped long hole is formed. Drill the center square holes at the locations corresponding to
An antenna in which a bolt is inserted through the folded arc-shaped long hole and the elevation center hole, and a bolt is inserted into the folding center square hole and the elevation adjustment arc-shaped long hole, so that the mast holder can be folded with respect to the satellite broadcast receiving antenna. Mast holder folding structure. 2. The antenna mast holder folding structure according to claim 1, wherein a nut is screwed onto each of the bolts, and the elevation angle of the satellite broadcast receiving antenna is adjusted by screwing the nut. 3. The folded arc-shaped elongated hole according to claim 1,
An antenna mast holder folding structure with a fixing projection that positions the bolt at the position that is the center axis of the elevation angle.