JP4749038B2 - Antenna mounting structure - Google Patents

Description

  The present invention relates to an antenna mounting structure in which an antenna body can be mounted in either a horizontal or vertical direction on, for example, a veranda or a mast that is erected in a vertical direction. The present invention relates to an antenna mounting structure including mounting brackets that can cope with either horizontal polarization or vertical polarization of a UHF television reception wave for broadcasting and that can change the direction of the antenna according to the direction of arrival of the reception wave.

As a prior art related to this type of antenna mounting structure, for example, a cross-shaped groove having a circular cross section is formed in the back surface of the antenna body, and the adjacent outer ends thereof are communicated by arc-shaped holes. A protruding edge is formed on the periphery, and a receiving bracket in which four protruding column (mast) receiving grooves and a notch groove for storage are formed on the protruding edge in parallel with the cross groove, and the arcuate hole of the receiving bracket is inserted. A U-bolt for inserting the base into the cross groove, a pressing metal that is inserted into the U-bolt and clamps the support column with the receiving metal, and a holding metal and a receiving metal that are screwed into both side screw parts of the U-bolt. There has been proposed an antenna fixture including a pair of nuts that fasten the support via a support (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 49-106242 (pages 1 to 3 and FIGS. 1 to 3)

However, the conventional antenna fixture has the following problems to be solved. That is, for example, in a state where the antenna is attached to the mast fixed to the veranda, the antenna generally protrudes forward from the lattice of the veranda and the like, while the screw portions on both sides of the U bolts are on the veranda. It protrudes inward (see FIG. 3 of Patent Document 1).
Therefore, when passing through the veranda, drying the laundry, or playing with the child, it is very dangerous, such as being injured by the screw portions on both sides of the protruding U-bolt. In addition, since the threaded parts on both sides of the U-bolt protrude inward along with the presser fitting, it does not look good in appearance, and there is a risk that the threaded parts will rust or deteriorate in a short period of time, especially when exposed to wind and rain. There is.

  The present invention has been made in view of the above points, and can be attached to the antenna body in either the horizontal or vertical direction according to the polarization direction (horizontal or vertical) of the radio wave to be received, In addition, the direction of the antenna can be changed according to the direction of arrival of the radio wave, and bolts and fasteners do not protrude when attached to the mast, etc., which is excellent in safety and appearance and appearance. Therefore, it is intended to provide an antenna mounting structure that can be used stably for a long time even when exposed to wind and rain or sunlight.

  In order to achieve the above object, the antenna mounting structure according to the present invention is an antenna mounting structure capable of mounting the antenna body in either the horizontal or vertical direction with respect to the mast supported in the vertical direction, A mounting bracket provided on the back side of the antenna body, and having two sets of opposing concave engaging portions that engage the mast with a gap in the longitudinal direction thereof so that a straight line connecting the two intersects in a cross shape And the mast is inclined by approximately 45 ° with respect to the longitudinal direction of the mounting bracket and the mast in a state where one surface of the mast is engaged with a pair of opposing concave engaging portions of the mounting bracket, respectively. The other surfaces facing each other are pressed and engaged with each other at an interval in the longitudinal direction, and a pair of mutually adjacent engaging recesses are provided opposite to each other in parallel, on both sides of the mounting bracket. Before crossing and straddling A presser fitting that clamps and fixes the mast between the engaging recesses, and bolt holes provided at both ends of the presser fitting are inserted and screwed into the screw holes on the antenna body side or the mounting bracket side, and tightened. And a pair of bolts (main bolts for fixing the antenna).

  According to the mounting structure of the antenna according to the present invention having the above-described configuration, for example, when mounting to a mast erected in the vertical direction on the veranda, the antenna is matched to the polarization direction (horizontal or vertical) of the received wave. With the main body oriented horizontally or vertically, a set of mounting brackets (up and down or left and right) is pressed against the front surface of the mast, and in this state, the holding bracket is inclined by approximately 45 ° with respect to the vertical direction of the mast. A pair of bolts are clamped by holding the pair of bolts while pressing the gap between the engagement recesses intersecting both sides of the antenna against the rear surface of the mast and turning the antenna body horizontally in the direction of arrival of the received wave. The antenna main body can be attached by being inserted into the hole, screwed into the screw hole on the antenna main body side or the mounting bracket side, and tightened. In this mounted state, the pressing metal comes into contact with the rear surface (rear surface) of the mast, and only the heads of the pair of bolts protrude behind the mounting metal. Therefore, unlike the conventional mounting structure, both side thread portions of the U-bolt do not protrude greatly into the veranda, so that the safety is high, the appearance is good, and the appearance is good.

  A pair of bolt holes that cover the presser fitting and are attached to the mounting bracket together with the presser fitting with the pair of bolts and are inserted into the bolt holes of the presser fitting in a series are provided. It is preferable to comprise a pressing metal cover.

  According to the mounting structure of the antenna according to claim 2, since the pressing metal fitting disposed on the rear surface (back surface) of the mast is covered with the pressing metal cover in a state in which the antenna is mounted on the mast, the appearance is further improved. It is good, and since the presser fitting is not directly exposed to wind and rain or sunlight, it is hard to deteriorate and has high durability.

  According to a third aspect of the present invention, the pressing metal fitting has a pair of adjacent engaging recesses opposed to each other on opposite sides of the opposite sides with a U-shaped cross section, and the bolts are inserted therethrough. It is preferable that a pair of long holes be formed on the plate surface between the refracting sides as the bolt holes.

  According to the antenna mounting structure of claim 3, the structure of the presser fitting is simple, light and compact, and the position of the presser fitting in the longitudinal direction can be adjusted when fixing with a pair of bolts. It can be reduced and manufacturing becomes easy.

  According to a fourth aspect of the present invention, in the antenna mounting structure according to the third aspect, the pressing metal cover includes a concave portion facing each concave engaging portion of the mounting metal, and the pressing metal is attached to the pressing metal cover. It can be fixed diagonally inside.

  According to the mounting structure of the antenna according to claim 4, since the presser fitting is integrally provided inside the presser cover, both can be handled as one part, and the both sides of the presser fitting are crossed so as to be convenient. When engaging the engagement recess over the back of the mast and fixing with a pair of bolts, even if the presser bracket is not visible with the cover, the long hole allows the position of the presser bracket in the longitudinal direction to some extent, The screw thread tip can be easily aligned with the screw hole. Also, since the concave part provided on the presser bracket cover covers the mast together with the concave engagement part of the mounting bracket, when the mast is viewed from the presser bracket cover side, the part corresponding to the mast presser bracket cover Is almost covered with the same cover, and the appearance is beautiful.

  As described in claim 5, in the antenna mounting structure according to claim 3 or 4, the antenna main body incorporates an antenna element in a resin casing, and the mounting bracket is disposed in the casing on the back surface of the casing. The mounting plate is fixed with a plurality of fixing screws so as to sandwich the rear surface of the housing, and the pressing metal cover is also made of resin, and the bolts are inserted through the bolt holes and the long holes of the pressing metal in series. The bolt can be attached to the mast by being screwed and tightened into a screw hole formed in the mounting bracket or the mounting plate.

  According to the antenna mounting structure according to claim 5, the antenna element is built in the resin casing, and the mounting bracket and the pressing metal are also covered with the resin casing and the resin pressing metal cover and exposed metal. Because the part is only the bolt head, it is beautifully attached to the mast, and the main part of the mounting structure including the antenna element is difficult to be exposed to wind and rain and sunlight, so it is durable and can be used stably for a long time Become.

The antenna mounting structure according to the present invention has the following excellent effects. That is,
The antenna body can be mounted in either the horizontal or vertical direction according to the polarization direction (horizontal or vertical) of the radio wave to be received, and the antenna direction can be adjusted according to the direction of arrival of the radio wave. Bolts and fasteners do not protrude when attached to a mast, etc., and are highly safe, have a good appearance, are durable, and are durable even when exposed to wind and rain or sunlight. It can be used stably.

  The best mode for carrying out an antenna mounting structure according to the present invention will be described below with reference to the drawings.

  FIG. 1 is an exploded perspective view of an antenna mounting structure according to an embodiment of the present invention as seen from the back side (rear side), in which antenna elements are omitted. Fig. 2 is an exploded perspective view showing a mode in which an antenna is attached to a mast erected in a vertical direction on a veranda or the like, and Fig. 3A is a horizontal view of attaching an antenna body to a mast erected in a vertical direction. The perspective view seen from the back side which shows the state, FIG.3 (b) is the perspective view seen from the back side which similarly shows the state which attached the antenna main body vertically. FIG. 4 is a cross-sectional view of the antenna body at the center in the longitudinal direction, showing a state where the antenna body is attached along the longitudinal direction of the mast.

  As shown in FIG. 1, the antenna body 1 is mounted in a resin casing 2 having a streamline shape in which, for example, a UHF television broadcast antenna element (not shown) is gradually inclined toward the front (front), and the back is opened. The resin lid plate 3 is mounted on the back opening 2 a of the housing 2. On the outer surface of the cover plate 3, a concave storage portion 3a for fitting a mounting bracket 5 to be described later is formed integrally with a resin at the center in the longitudinal direction, and is open toward the back (rear). The periphery of the concave storage portion 3a is formed by a vertical wall 3b extending in the back direction. In the present example, three connection terminals 12 for input / output are provided near the rear end of the bottom surface of the antenna body 1 as shown in FIG.

  The mounting bracket 5 is formed of a shallow dish having a substantially square shape when viewed from the back, and has a vertical wall 5a whose periphery extends in the back direction as shown in FIG. A cross-engaged protrusion in which a concave engaging portion 5b is formed at the center in the longitudinal direction of each vertical wall 5a, and a wide protrusion that linearly connects the opposing concave engaging portions 5b intersects in a cross-shape at the center in the longitudinal direction. 5c (see FIG. 1) is formed on the bottom surface of the mounting bracket 5. Further, bolt insertion holes 5d are formed in the respective corners that form a diagonal line of the mounting bracket 5, and bolt insertion holes 3d corresponding to the bolt insertion holes 5d are also formed in the four corners of the bottom surface of the concave storage portion 3a. ing. Furthermore, a bolt insertion hole 5e of a long main bolt 10 (for fixing the pressing metal 8), which will be described later, is drilled slightly near the corner that forms a diagonal line of the mounting bracket 5, and these bolt insertion holes 5e are formed in the bolt insertion holes 5e. Corresponding bolt insertion holes 3e are also formed in the bottom surface of the concave storage portion 3a. Note that an arcuate concave portion 3c is formed at a position corresponding to the concave engaging portion 5b of the mounting bracket 5 on the four vertical walls 3b forming the concave accommodating portion 3a.

As shown in FIGS. 1 and 4, a mounting plate 6 made of a square metal plate corresponding to the shape of the mounting bracket 5 is arranged at the center in the longitudinal direction on the front side of the lid plate 3, and is shown in FIGS. 2 and 4. the mounting bracket 5 as fitted into the concave housing portion 3a of the cover plate 3, the four mounting short bolt 7 is passed through the bolt insertion hole 3d of the bolts holes 5d and recessed accommodating portion 3a of the mounting bracket 5, the mounting plate The mounting bracket 5 is mounted so as to sandwich the lid plate 3 integrally with the mounting plate 6 by being screwed into and tightened into the screw holes 6a drilled at the four corners of the plate 6. The mounting plate 6 is formed with a screw hole 6b for the long main bolt 10 at a position corresponding to the insertion hole 5e and the insertion hole 3e.

  On the other hand, the holding metal fitting 8 for attaching the antenna main body 1 to the mast (post) M in a pair with the attachment metal fitting 5 has a U-shaped refraction side 8b and 8b facing each other in a U-shaped cross section as shown in FIGS. A pair of bolt holes through which the main bolts 10 are inserted into both ends of the plate surface 8a between the refracting sides 8b, and a pair of engaging recesses 8c and 8d adjacent to each other are formed parallel to each other. (Insertion holes) 8e and 8e are formed, and these bolt holes 8e and 8e correspond to the bolt insertion hole 5e of the mounting bracket 5, the bolt insertion hole 3e of the concave storage portion 3a, and the like. A pair of adjacent engaging recesses 8c and 8d on each of the refraction sides 8b and 8b are provided at the upper ends of the holding metal fittings 8 when the antenna body 1 is mounted horizontally on a mast M erected in the vertical direction as shown in FIG. The side is inclined approximately 45 ° to the left side with respect to the mast M, and is engaged with the back surface of the mast M across the upper right engaging recess 8c and the lower left engaging recess 8d. When the antenna body 1 is mounted vertically, the upper end side of the presser fitting 8 is inclined to the right side by about 45 ° with respect to the mast M, and between the upper left engaging recess 8c and the lower right engaging recess 8d. Engage with the back of the mast M (see FIG. 5).

  The pressing metal cover 9 for covering the pressing metal 8 is made of resin, and has a substantially square dish-like body provided with a vertical wall 9b around the vertical wall 3b corresponding to the vertical wall 3b of the concave storage portion 3a as shown in FIGS. Consists of. An arcuate concave portion 9c is formed in the middle in the longitudinal direction of each vertical wall 9b so as to face the arcuate concave portion 3c of the concave storage portion 3a. On the inner surface of the pressing metal cover 9, the pressing metal 8 is fixed diagonally by mounting screws 11 passing through the pair of small holes 8f on the plate surface 8a as shown in FIG. Further, a bolt hole 9 d for inserting the main bolt 10 is formed in the presser metal cover 9 so as to correspond to the bolt insertion hole 8 e of the presser metal 8. The two bolt insertion holes 9d are formed with stepped portions 9e that are one step lower than the outer surface of the pressing metal cover 9 facing each other.

  The antenna mounting structure of the present embodiment is configured as described above. The usage mode of this antenna mounting structure will be described in detail.

  When the antenna body 1 is horizontally mounted on the mast M erected in the vertical direction corresponding to the received wave for horizontal polarization, for example, as shown in FIG. With the upper and lower concave engaging portions 5b (see FIG. 1) pressed against the front surface of the mast M, the presser fitting 8 in the presser cover 9 is pressed against the back of the mast M, and the pair of main bolts 10 are The bolt holes 9d and the bolt holes 8e of the presser fitting 8 are respectively inserted in series. Further, it is inserted into the bolt hole 5e of the mounting bracket 5 and the bolt hole 3e of the cover plate 3, and screwed into the respective screw holes 6a of the mounting plate 6, and the tips of the screw portions 10a of the two main bolts 10 are screwed together. And tighten loosely. Then, the antenna body 1 is turned horizontally with respect to the mast M, and the two main bolts 10 are further tightened and tightened with the front surface of the antenna body 1 aligned with the arrival direction of the received wave.

  In this state, the upper left engaging concave portion 8c and the lower right engaging concave portion 8d of the presser fitting 8 inclined upward to the left are fitted over the back side of the mast M, and are approximately 45 ° in the longitudinal direction of the mast M. Engage in an inclined state. Further, the upper and lower or left and right concave engaging portions 5b of the mounting bracket 5 are engaged with the front surface of the mast M in a direction perpendicular to the longitudinal direction of the mast M, and are firmly sandwiched between the pressing bracket 8 and the mast M. Therefore, the antenna body 1 is not displaced along the mast M or turned. Further, on the back side of the antenna main body 1, that is, on the back side of the mast M, a resin presser cover 9 is covered on the presser base 8, and only the head 10 b of the main bolt 10 is a bolt of the presser cover 9. Although protruding from the insertion hole 9d, the bolt head 10b is in a position 9e that is one step lower than the outer surface of the presser cover 9. Therefore, the bolt head 10b is not in contact with the bolt head 10b and is extremely safe.

  On the other hand, FIG. 3 (b) shows a case where the antenna body 1 is vertically attached to the mast M erected in the vertical direction in correspondence with the received wave for vertical polarization. On the back side, the upper right engaging recess 8c and the lower left engaging recess 8d of the presser fitting 8 inclined upward are fitted so as to be engaged with each other while being inclined by approximately 45 ° in the longitudinal direction of the mast M. Is different. The antenna body 1 in the vertical direction is swung horizontally with respect to the mast M in accordance with the arrival direction of the received wave, and tightened with the two main bolts 10 so as to receive the received wave at the front of the antenna body 1. Since this aspect is common, detailed description is omitted.

  Although the embodiment of the antenna mounting structure of the present invention has been described above, it can be implemented as follows.

-A screw hole into which the threaded portion 10a of the main bolt 10 can be screwed may be provided at the position of the bolt insertion hole 5e of the mounting bracket 5 and tightened.
In order to simplify the structure, the presser cover 9 can be omitted and the main bolt 10 can be tightened and attached using only the presser 8.

  FIG. 5 shows another embodiment of the presser fitting 8. The bolt insertion holes 8e at both ends of the plate surface 8a of the presser fitting 8 are elongated holes 8e 'and 8e extending in the longitudinal direction as shown in FIG. It may be ', and one end of one long hole 8e' may be opened. In this way, the main bolt 10 can be easily and reliably screwed into the screw hole 6 b of the mounting plate 6 even if there is a slight misalignment with the bolt insertion hole 9 d of the presser cover 9.

  -Although illustration is abbreviate | omitted, since this invention makes object the antenna element incorporated in the antenna main body 1 receive either horizontal polarization or vertical polarization, it is antenna main body 1 like the said Example. Needless to say, the shape of the antenna body 1 is not limited to a substantially rectangular shape when viewed from the front, and can be similarly applied to the antenna body 1 having a cubic or spherical shape, for example.

The antenna element is abbreviate | omitted with the exploded perspective view seen from the back side (back) which shows the attachment structure of the antenna which concerns on the Example of this invention. It is the disassembled perspective view seen from the back side which shows the aspect which attaches an antenna to the mast standing upright on the veranda. FIG. 3A is a perspective view seen from the rear side showing a state where the antenna body is horizontally mounted on a mast erected in the vertical direction, and FIG. 3B is a state where the antenna body is also vertically mounted. It is the perspective view seen from the back side shown. It is sectional drawing in the longitudinal direction center part of the antenna main body which shows the state which attached the antenna main body along the longitudinal direction of a mast. FIG. 5 (a) is a plan view and FIG. 5 (b) is a perspective view in a state facing the back side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antenna main body 2 Resin housing | casing 2a Back opening 3 Resin cover board 3a Concave accommodation part 3b Vertical wall 3c Arc-shaped concave part 5 Mounting bracket 5a Vertical wall 5b Concave-engagement part 5c Cross protrusion 5d / 5e bolt hole (bolt Insertion hole)
6 Mounting plate 6a, 6b screw hole 7 Short bolt 8 Holding bracket 8a Plate surface 8b Refraction side 8c / 8d Engaging recess 8e Bolt hole (bolt insertion hole)
8f Small hole 9 Presser bracket cover 9b Vertical wall 9c Arc-shaped concave part 9d Bolt hole (bolt insertion hole)
9e Step 10 Main bolt 11 Mounting screw 12 Connection terminal M Mast (support)

Claims (5)

An antenna mounting structure that allows the antenna body to be mounted either horizontally or vertically on a mast supported in a vertical direction,
A mounting bracket provided on the back side of the antenna body, and having two sets of opposing concave engaging portions that engage the mast with a gap in the longitudinal direction thereof so that a straight line connecting the two intersects in a cross shape When,
The masts face each other at an angle of approximately 45 ° with respect to the longitudinal direction of the mounting bracket and the mast in a state where one surface of the mast is engaged with a pair of opposing concave engagement portions of the mounting bracket, respectively. The other surface is pressed and engaged with a distance in the longitudinal direction, and a pair of mutually adjacent engaging recesses are provided opposite to each other in parallel, intersecting the mounting bracket on both sides. A pressing metal fitting that clamps and fixes the mast between the engaging recesses straddling it,
An antenna mounting structure comprising: a pair of bolts that are inserted into bolt holes provided at both ends of the presser fitting and screwed into a screw hole on the antenna body side or the mounting bracket side to be tightened.   A presser bracket cover that covers the presser bracket, is attached to the mounting bracket together with the presser bracket with the pair of bolts, and has a pair of bolt holes that are continuously inserted through the bolt holes of the presser bracket; The antenna mounting structure according to claim 1.   The holding metal fitting has a pair of adjacent engaging recesses facing each other on opposite sides of the refraction side facing each other in a U-shaped cross section, and a pair of elongated holes through which the bolts are inserted as the bolt holes. The antenna mounting structure according to claim 1, wherein the antenna mounting structure is formed on a plate surface between the refraction sides.   The said pressing metal cover is provided with the recessed part which opposes each concave engaging part of the said mounting metal fitting, and is fixing the said pressing metal metallurgy diagonally inside the said pressing metal cover. Antenna mounting structure.   The antenna body incorporates an antenna element in a resin casing, and a plurality of fixing screws are used to hold the mounting bracket on the rear surface of the casing with a mounting plate disposed in the casing. The retainer cover is also made of resin, and each bolt is screwed into a screw hole drilled in the mounting bracket or the mounting plate with the bolt through which the bolt hole and the long hole of the retainer bracket are inserted in series. The antenna mounting structure according to claim 3 or 4, wherein the antenna is attached to the mast by tightening together.

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