JPH04115704A - Reflector for parabolic antenna - Google Patents

Reflector for parabolic antenna

Info

Publication number
JPH04115704A
JPH04115704A JP23524690A JP23524690A JPH04115704A JP H04115704 A JPH04115704 A JP H04115704A JP 23524690 A JP23524690 A JP 23524690A JP 23524690 A JP23524690 A JP 23524690A JP H04115704 A JPH04115704 A JP H04115704A
Authority
JP
Japan
Prior art keywords
reflector
boss
mounting device
points
fixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP23524690A
Other languages
Japanese (ja)
Inventor
Yutaka Yamanaka
豊 山中
Toshihiko Okamoto
利彦 岡本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP23524690A priority Critical patent/JPH04115704A/en
Publication of JPH04115704A publication Critical patent/JPH04115704A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent deformation of a reflector parabolic face when the reflector is fixed to a mount device and to make the mount device compact by arranging a fixed part of the mount device at the rear side of the reflector to three points in a triangle shape. CONSTITUTION:A fixing boss 2 is arranged to three points in a triangle shape. The share of a wind pressure load per one fixed boss is equalized through the arrangement of the bosses 2 in this way. Furthermore, the boss at the upper one point is fitted tentatively to the mount device by using a bolt, then the hole position of the boss and the mount device at the lower two points is matched naturally by the self-weight of the reflector and the mount is facilitated. Moreover, the reference plane formed by the upper face of the bosses 2 at the three points is easily obtained and the mount device is made compact.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、放送衛星または通信衛星からの電波を受信
するパラボラアンテナ用のリフレクターに関し、特に開
口径が400mm以下の小形アンテナに好適なリフレク
ター背面の取付装置の固定部に関するものである。
Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a reflector for a parabolic antenna that receives radio waves from a broadcasting satellite or a communication satellite. This relates to the fixing part of the mounting device.

〔従来の技術〕[Conventional technology]

衛星放送受信用パラボラアンテナのリフレクターは、現
在45形(開口径450mm)が主流となっており、リ
フレクタ−の背面の四角形状に配設された4点の固定用
ボスで取付装置へ固定され、その取付装置を介してベラ
ンダやパラボラアンテナ用専用支柱に取付けられている
。今後コンバーターの一層の性能向上や衛星の高出力化
やスポットビーム化によってさらにリフレクタ−が小形
化されパラボラアンテナ全体がコンパクト化され、ベラ
ンダ取付けも一層容易になるとともに室装置や車載型、
ポータプルタイプ等への用途拡大が期待されている。さ
らには、リフレクタ−が小形化されると風圧荷重が小さ
くなり屋根上に既設の地上波テレビアンテナ用支柱への
取付けも可能となってくる。また、小形アンテナでの受
信エリアの拡大に伴ない、仰角が大きな南の地方で屋根
上支柱に貫通させる使い方が増えると考えられる。従来
の衛星放送受信用パラボラアンテナは、オフセットタイ
プのリフレクターが多く使われており第6図に示すよう
にその背面に4個所の固定用ボス100を配設しである
。また、上下の固定用ボス間の中心位置をリフレクタ−
の上下方向の中心から下側に配置しているのが通例であ
る。このような4個所の固定用ボス100を有するリフ
レクタ−101を用いたパラボラアンテナを地上波テレ
ビアンテナ用の支柱102に、特に仰角が大きな南の地
方で貫通させて取付けようとすると、第7図のように取
付装置103が大きくなってしまったり、第8図のよう
に余分な部品104が必要となるので困難なものになっ
ていた。
Currently, the mainstream reflector for parabolic antennas for satellite broadcasting reception is the 45 type (opening diameter 450 mm), which is fixed to the mounting device with four fixing bosses arranged in a rectangular shape on the back of the reflector. It is attached to a balcony or a special pole for parabolic antennas via the mounting device. In the future, as the performance of converters further improves, the output of satellites increases, and spot beams become available, reflectors will become smaller and the entire parabolic antenna will become more compact, making it easier to install on balconies, as well as for indoor equipment, vehicle-mounted devices, etc.
Applications are expected to expand to portable types, etc. Furthermore, if the reflector is made smaller, the wind pressure load will be reduced, making it possible to attach it to an existing terrestrial TV antenna support on the roof. Additionally, as the reception area of small antennas expands, it is thought that the use of penetrating rooftop supports will increase in southern regions where the angle of elevation is large. In conventional satellite broadcast receiving parabolic antennas, an offset type reflector is often used, and as shown in FIG. 6, four fixing bosses 100 are arranged on the back side of the reflector. In addition, the center position between the upper and lower fixing bosses can be adjusted with a reflector.
It is customary to place it below the center in the vertical direction. If you try to install a parabolic antenna using a reflector 101 having such four fixing bosses 100 through a support 102 for a terrestrial television antenna, especially in the southern region where the angle of elevation is large, the antenna shown in FIG. The mounting device 103 becomes large as shown in FIG. 8, and an extra part 104 is required as shown in FIG. 8, making it difficult.

〔解決しようとする課題〕[Problem to be solved]

従来のリフレクターの背面4個所に固定用ボスを設けた
ものでは、リフレクタ−製造時の精度上の問題でボス4
点の上面から1つの平面が厳密に形成されないこともあ
り、ボス上面を基準とした場合は、リフレクタ−放物面
の面精度測定に精密さを欠きリフレクタ−の品質管理上
問題があった。
In conventional reflectors with fixing bosses provided at four locations on the back, boss 4 was removed due to accuracy issues during reflector manufacturing.
One plane may not be precisely formed from the top surface of a point, and when the top surface of the boss is used as a reference, there is a lack of precision in measuring the surface accuracy of the reflector paraboloid, which causes problems in quality control of the reflector.

このボス4点の上面の同一平面性は、取付装置の設計・
製造上でも大きな意味を持ち、リフレクタ−のボスと取
付装置の形状の相対関係からボスでの取付装置固定の際
に、リフレクタ−放物面に歪みが生じ焦点位置を狂わす
こともあった。また、40形以下の小形リフレクタ−に
ついては、風圧荷重の面から4点ボスでは強度的に品質
過剰であり、取付装置のコンバクを化にも限界があった
The coplanarity of the top surfaces of these four bosses is determined by the design of the mounting device.
This also has great significance in manufacturing, and due to the relative relationship between the shape of the reflector boss and the mounting device, when the mounting device is fixed with the boss, the reflector paraboloid may be distorted and the focus position may be deviated. In addition, for small reflectors of size 40 or smaller, a four-point boss is too strong in terms of wind pressure load, and there is a limit to how easily the mounting device can be assembled.

さらにボスが下側ヘシフトして配設されているた狛取付
装置に固定してパラボラアンテナとして屋根上の地上波
テレビアンテナ用支柱に取付ける場合、取付装置のコン
パクト化が困難であった。即ち、第7図に示すように、
特に仰角の大きな南の地方でリフレクタ−の上端が屋根
上の地上波テレビアンテナ用支柱にぶつからないように
リフレクタ−を支柱から遠ざけることが必要で取付装置
のコンパクト化が困難であった。
Further, when the boss is shifted downward and fixed to a frame mounting device disposed to be attached as a parabolic antenna to a terrestrial TV antenna support on a roof, it is difficult to make the mounting device compact. That is, as shown in FIG.
Particularly in southern regions where the angle of elevation is large, it is necessary to move the reflector away from the terrestrial television antenna support on the roof so that the upper end of the reflector does not hit the support, making it difficult to make the mounting device more compact.

そこで、この発明は、リフレクタ−の背面に3個所取付
装置の固定部を設けることにより、3点の固定部からな
る厳密なl平面を形成し、取付装置に固定した際に生ず
るリフレクタ−放物面の歪みを防止し、取付装置をコン
パクト化し、さらに3点の固定部位置を最適化すること
により屋根上に既設の地上波テレビアンテナ用支柱に取
付ける場合でも取付装置のコンパクト化を図れるパラボ
ラアンテナ用のリフレクターを提供することを目的とす
る。
Therefore, this invention provides fixing parts for the mounting device at three locations on the back of the reflector, thereby forming a strict l-plane consisting of the three fixing parts, and creating a reflector paraboloid when fixed to the mounting device. A parabolic antenna that prevents surface distortion, makes the mounting device more compact, and optimizes the positions of the three fixing points, making it possible to make the mounting device more compact even when installing it on an existing terrestrial TV antenna pole on the roof. The purpose is to provide a reflector for

〔課題を解決するだめの手段〕[Failure to solve the problem]

上述の目的を達成するため、この発明は、リフレクタ−
背面の取付装置の固定部を3角形状に3点配設したもの
である。また、リフレクタ−の背面の3点に配設された
取付装置の固定部の上下の固定部間の中心位置をリフレ
クタ−の上下方向のほぼ中心から上側までの間に配置し
たものである。
In order to achieve the above object, the present invention provides a reflector.
Three fixing parts of the mounting device on the back are arranged in a triangular shape. Moreover, the center position between the upper and lower fixing parts of the fixing parts of the mounting device disposed at three points on the back surface of the reflector is arranged between approximately the vertical center of the reflector and the upper side.

〔作用〕[Effect]

この発明においては、取付装置の固定部を3角形状に3
点配設することで、3点の固定部から形成される1つの
基準平面が厳密に得られることとなり、固定部を基準に
した放物面精度の測定等アンテナとしての実装状態を想
定したリフレクターの品質管理が容易になり、取付装置
に固定した際に生ずるリフレクタ−放物面の歪みを防止
し所定の受信性能を確保できる。特に風圧荷重の小さな
小形リフレクタ−では3点の固定部で十分な取付は強度
を確保でき、取付装置のコンパクト化が可能である。ま
た、リフレクタ−の背面の3点に配設された取付装置の
固定部の上下の固定部間の中心位置をリフレクタ−の上
下方向の中心から上側までの間に配置することで、屋根
上に既設の地上波テレビアンテナ用支柱に取付けた場合
であっても、取付装置の大形化を避けることができ、全
体としてコンパクト化が図れるものである。
In this invention, the fixing part of the mounting device has three triangular shapes.
By arranging the points, it is possible to strictly obtain one reference plane formed by the fixed parts at three points, and it is possible to measure the accuracy of a paraboloid based on the fixed parts, etc., by assuming the reflector is mounted as an antenna. quality control becomes easier, distortion of the reflector-paraboloid that occurs when it is fixed to a mounting device can be prevented, and predetermined reception performance can be ensured. In particular, for small reflectors with small wind pressure loads, sufficient mounting strength can be ensured with three fixing points, and the mounting device can be made more compact. In addition, by locating the center position between the upper and lower fixing parts of the fixing parts of the mounting device arranged at three points on the back of the reflector between the vertical center of the reflector and the upper side, it is possible to Even when it is attached to an existing terrestrial TV antenna support, it is possible to avoid increasing the size of the attachment device, and the overall size can be made more compact.

〔実施例〕 以下に、この発明の好適な実施例を図面を参照にして説
明する。なお、この実施例では背面の取付装置の固定部
としてナツトを内蔵したボスを用いたが、固定部はこれ
に限るものでな(、単なるボスやボルトを内蔵したボス
若しくはボルト穴等も考えられる。
[Embodiments] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In this example, a boss with a built-in nut was used as the fixing part of the mounting device on the back, but the fixing part is not limited to this. (A simple boss, a boss with a bolt built in, a bolt hole, etc. can also be considered.) .

第1図は、オフセットタイプのリフレクター1の背面に
おける固定用ボス(固定部)2の配列を示す。この実施
例では固定用ボス(固定部)2を3角形状に3点配設し
上下の固定用ボス間の中心位置χをリフレクタ−1の長
径りの下から50〜60%、上から40〜50%の位置
とし、ボス間の上下の幅りを長径りの20〜35%とし
、ボス間の左右の幅dをリフレクタ−1の短径lの20
〜35%としである。しかも、上側に1点、下側に2点
の3点の配設としている。このような固定用ボス(固定
部)2の配設により、固定用ボス1個当りの風圧荷重の
負担を平等化でき、換言すれば適正なボス荷重とするこ
とができる。さらに、上側の1点を取付装置にボルトで
仮止めすれば、リフレクタ−の自重で下側の2点でもボ
スと取付装置の穴位置が自然に合い、取付けも容易とな
る。
FIG. 1 shows the arrangement of fixing bosses (fixing parts) 2 on the back surface of an offset type reflector 1. In this embodiment, the fixing bosses (fixing parts) 2 are arranged at three points in a triangular shape, and the center position χ between the upper and lower fixing bosses is 50 to 60% from the bottom and 40% from the top of the long axis of the reflector 1. ~50% position, the vertical width between the bosses is 20 to 35% of the major axis, and the left and right width d between the bosses is 20% of the minor axis l of reflector-1.
~35%. Furthermore, three points are provided, one on the upper side and two on the lower side. By arranging the fixing boss (fixing portion) 2 in this manner, the wind pressure load per fixing boss can be equalized, in other words, an appropriate boss load can be achieved. Furthermore, if one point on the upper side is temporarily fixed with a bolt to the mounting device, the two points on the lower side will also naturally align with the hole positions of the boss and the mounting device, making installation easier.

しかも3点の固定用ボス(固定部)2の上面で形成され
る基準平面が得られやすくなるとともに、取付装置のコ
ンパクト化が可能となる。
Moreover, it becomes easier to obtain a reference plane formed by the upper surfaces of the three fixing bosses (fixing portions) 2, and the mounting device can be made more compact.

次に、リフレクタ−1のサイズと風圧荷重、ボス荷重の
関係を表1に示す。
Next, Table 1 shows the relationship between the size of reflector 1, wind pressure load, and boss load.

表1 これは、第3図に示すグラフのように、リフレクタ−1
が40形以下の場合には固定用ボス(固定部)2が3ケ
所であっても45形サイズで4点ボスの場合とほぼ同等
のボス荷重とすることができる。
Table 1 This reflects the reflector 1 as shown in the graph shown in Figure 3.
If the size is 40 or less, even if there are three fixing bosses (fixing parts) 2, the boss load can be almost the same as in the case of a 45-size boss with four points.

次の表2にこの発明のリフレクターサイズの違いによる
固定用ボスの配設例を示す。
Table 2 below shows examples of the arrangement of fixing bosses for different reflector sizes according to the present invention.

表2 第4図は、アルミまたは鉄製のリフレクター1の裏面に
3点の固定部2を設けた部材4をリベット又は溶接で固
着したものを示す。第5図はアルミまたは鉄製のリフレ
クター1に取付装置3の一部を構成する部材と固定部2
とが一体になったものとをリベット又は溶接で固着した
ものを示す。
Table 2 FIG. 4 shows a reflector 1 made of aluminum or iron, with a member 4 having three fixing parts 2 fixed to the back surface thereof by rivets or welding. Figure 5 shows members forming part of the mounting device 3 and the fixing part 2 on the reflector 1 made of aluminum or iron.
Indicates a product in which the product and the product are fixed together by rivets or welding.

〔効果〕〔effect〕

以上説明したように、この発明によれば、リフレクタ−
背面の成句装置の固定部を3角形状に3点配設したこと
により、3点の固定部で形成される基準平面が厳密に得
られることになる。従って固定部を基準にした放物面精
度の測定等、アンテナとしての実装状態を想定したリフ
レクターの品質管理が容易になり、また、取付装置への
固定の際に生ずるリフレクタ−放物面の歪みを防止し、
所定の受信性能を確保できる。3点の固定部により基準
平面が厳密に得られることは、取付装置の設計・製造・
品質管理上でも大きなメリットである。また、同一の固
定ピッチであれば、4点より3点の固定部の方が取付装
置がコンパクト化できることは明らかである。さらに、
上下の取付装置の固定部間の中心位置をリフレクタ−の
上下方向のほぼ中心から上側までの間に配置したもので
は、屋根上に既設の地上波テレビアンテナ用支柱に取付
ける場合に取付装置のコンパクト化が可能となる。
As explained above, according to the present invention, the reflector
By arranging the three fixing parts of the phrase device on the back in a triangular shape, a reference plane formed by the three fixing parts can be precisely obtained. Therefore, quality control of the reflector assuming its mounting state as an antenna, such as measuring the accuracy of the paraboloid based on the fixed part, becomes easier, and the distortion of the reflector-paraboloid that occurs when fixed to the mounting device is facilitated. prevent,
Predetermined reception performance can be ensured. The fact that a reference plane can be precisely obtained using the three fixing points is due to the design, manufacturing, and design of the mounting device.
This is also a great advantage in terms of quality control. Furthermore, it is clear that the mounting device can be made more compact with three fixing points than with four fixing parts, provided the fixed pitch is the same. moreover,
If the center position between the fixing parts of the upper and lower mounting devices is placed between approximately the vertical center of the reflector and the upper side, the mounting device will be more compact when it is installed on an existing terrestrial television antenna pole on the roof. It becomes possible to

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の好適な実施例を示すオフセットタイ
プのリフレクターの背面図、第2図はこの発明のリフレ
クターを用いたパラボラアンテナを地上波テレビアンテ
ナ用支柱に取付けた状態を示す図、第3図はリフレクタ
ーのサイズと風圧荷重、ボス荷重の関係を示すグラフ、
第6図は従来例を示すリフレクタ−の背面図、第7図及
び第8図は従来のリフレクターを用いたパラボラアンテ
ナを地上波テレビアンテナ用支柱に取付けた状態を示す
図である。 1・・・リフレクタ− 2・・・固定用ボス(固定部)、 3・・・取付装置。
Fig. 1 is a rear view of an offset type reflector showing a preferred embodiment of the present invention, Fig. 2 is a view showing a parabolic antenna using the reflector of the invention attached to a support for a terrestrial television antenna; Figure 3 is a graph showing the relationship between reflector size, wind pressure load, and boss load.
FIG. 6 is a rear view of a conventional reflector, and FIGS. 7 and 8 are diagrams showing a parabolic antenna using a conventional reflector attached to a terrestrial TV antenna support. 1...Reflector 2...Fixing boss (fixing part), 3...Mounting device.

Claims (1)

【特許請求の範囲】 1、背面に設けた固定部を用いて、リフレクターの取付
装置を固定するパラボラアンテナ用のリフレクターにお
いて、取付装置の固定部を3角形状に3点配設したこと
を特徴とするパラボラアンテナ用のリフレクター。 2、リフレクターの背面の3点に配設された取付装置の
固定部の上下の固定部間の中心位置をリフレクターの上
下方向のほぼ中心から上側までの間に配置したことを特
徴とする請求項1に記載のパラボラアンテナ用のリフレ
クター。
[Claims] 1. A reflector for a parabolic antenna that fixes a reflector mounting device using a fixing portion provided on the back surface, characterized in that the fixing portions of the mounting device are arranged at three points in a triangular shape. A reflector for a parabolic antenna. 2. A claim characterized in that the center position between the upper and lower fixing parts of the fixing parts of the mounting device disposed at three points on the back surface of the reflector is arranged between approximately the vertical center of the reflector and the upper side. 1. The reflector for the parabolic antenna described in 1.
JP23524690A 1990-09-05 1990-09-05 Reflector for parabolic antenna Pending JPH04115704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23524690A JPH04115704A (en) 1990-09-05 1990-09-05 Reflector for parabolic antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23524690A JPH04115704A (en) 1990-09-05 1990-09-05 Reflector for parabolic antenna

Publications (1)

Publication Number Publication Date
JPH04115704A true JPH04115704A (en) 1992-04-16

Family

ID=16983242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23524690A Pending JPH04115704A (en) 1990-09-05 1990-09-05 Reflector for parabolic antenna

Country Status (1)

Country Link
JP (1) JPH04115704A (en)

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