JPH036019Y2

JPH036019Y2 -

Info

Publication number: JPH036019Y2
Application number: JP19695087U
Authority: JP
Priority date: 1987-12-25
Filing date: 1987-12-25
Publication date: 1991-02-15
Also published as: JPH01100517U

Description

【考案の詳細な説明】 (イ) 産業上の利用分野この考案は各種通信機器に用いられる周波数変
換回路に使用されるダブルバランスドミキサの構
造に関するもので１個のブロツクとして小形軽量
にまとめたものである。[Detailed explanation of the invention] (a) Industrial application field This invention relates to the structure of a double-balanced mixer used in frequency conversion circuits used in various communication equipment, and is compact and lightweight as a single block. It is something.

(ロ) 従来の技術従来この種のダブルバランスドミキサは、機器
のプリント基板上に、またはそのユニツト基板上
に、２つの伝送トランスとダイオードをある程度
距離をおいて平面的に配置されスペースをとつて
いた。この伝送トランスは柱状コアにメガネ状の
２つの貫通孔をもちこの貫通孔を通して直に被覆
導線の巻線を施した物であつた。(b) Conventional technology Conventionally, this type of double-balanced mixer has two transmission transformers and diodes arranged in a plane with a certain distance between them on the printed circuit board of the equipment or on its unit board to save space. It was on. This transmission transformer had two eyeglass-shaped through holes in a columnar core, and a coated conducting wire was wound directly through the through holes.

(ハ) 考案が解決しようとする問題点ダブルバランスドミキサは、その扱う周波数が
非常に高いため、伝送トランスのリード線の長さ
やダイオードのリード線の長さの寸法的な少しの
アンバランスがあると変換損失等のミキサの電気
的特性が一定とならず、使用可能な特性を得るこ
とが困難であつた。また伝送トランスには貫通穴
付きのフエライトコアに直接被覆導線を巻線する
ためその角角で導線の被覆が傷付けられしばしば
シヨートする欠点があつた。またそれらの基板へ
の配線やコアの固定もたいへん手間のかかるもの
であり、その占めるスペースも大きいものであつ
た。(c) Problems that the invention aims to solve Because the double-balanced mixer handles extremely high frequencies, it is difficult to avoid slight dimensional imbalances in the lengths of the transmission transformer lead wires and the lengths of the diode lead wires. If this happens, the electrical characteristics of the mixer such as conversion loss will not be constant, making it difficult to obtain usable characteristics. In addition, the transmission transformer has the disadvantage that since the covered conductor wire is directly wound around a ferrite core with a through hole, the sheath of the conductor is damaged at the corners and often shoots. Furthermore, wiring and fixing the core to the board is very time-consuming and takes up a large amount of space.

(ニ) 問題点を解決するための手段本考案はこれらの欠点を解決する構造を提供す
るものである。以下図面について説明する。第１
図は本考案の１実施例を示す巻線前の分解斜視図
で第２図はその完成したブロツクの上面図、第３
図は底面図、第４図はその結線図である。図にお
いて、１はブリツジ型ダイオードで、２はその端
子である。３はフエライトからなる柱状コアでそ
れには４つの貫通孔４が直交線上に設けられてい
る。５は端子板で合成樹脂からなりその底面には
端子ピン６が植設されその底面および側面には巻
線溝７をもうけ、その上面には上記フエライトコ
アの側面を覆う環状壁８とその貫通孔４の内壁を
覆う柱状突壁９とその巻線用貫通孔１０がもうけ
られていてその高さは柱状フエライトコアの高さ
より若干高くしてある。なお１１は巻線部分であ
る。(d) Means for solving the problems The present invention provides a structure to solve these drawbacks. The drawings will be explained below. 1st
The figure is an exploded perspective view of one embodiment of the present invention before winding, Figure 2 is a top view of the completed block, and Figure 3 is a top view of the completed block.
The figure is a bottom view, and FIG. 4 is a wiring diagram. In the figure, 1 is a bridge diode and 2 is its terminal. Reference numeral 3 denotes a columnar core made of ferrite, in which four through holes 4 are provided on orthogonal lines. Reference numeral 5 denotes a terminal plate made of synthetic resin, with a terminal pin 6 planted on its bottom surface, a winding groove 7 formed on its bottom and side surfaces, and an annular wall 8 covering the side surface of the ferrite core and an annular wall 8 extending therethrough on its top surface. A columnar projecting wall 9 covering the inner wall of the hole 4 and a through hole 10 for the winding are provided, and the height thereof is slightly higher than that of the columnar ferrite core. Note that 11 is a winding portion.

(ホ) 作用と考案の効果本考案の構造はこのようになつているので、各
素子が立体的に積層されスペースが節約され、従
つてそれらの間の配線も短く一定となり安定な電
気的特性が得られ、またフエライトコアの取付け
も上記環状壁８と柱状突壁９とで保持されかつこ
れらの壁によつて被覆導線も直接コアに接触せず
巻線のシヨートが防止される。さらに従来の２個
の伝送トランスも１個のフエライトコアに出来た
ので小形軽量となり、そのうえ巻線用貫通孔１０
と端子板５の配線溝７によつて殆どコアに直接巻
線したのと同効果がえられた。(E) Function and Effects of the Invention Since the structure of the present invention is as described above, each element is stacked three-dimensionally to save space, and the wiring between them is also short and constant, resulting in stable electrical characteristics. Furthermore, the attachment of the ferrite core is held by the annular wall 8 and columnar projecting wall 9, and these walls prevent the covered conductor from coming into direct contact with the core, thereby preventing the winding from shorting. Furthermore, the two conventional transmission transformers can now be made into one ferrite core, making them smaller and lighter.
By using the wiring groove 7 of the terminal board 5, almost the same effect as winding the wire directly around the core was obtained.

以上説明したように本考案の実用上の効果は極
めて大なるものがある。 As explained above, the practical effects of the present invention are extremely large.

[Brief explanation of drawings]

第１図は本考案の１実施例を示す巻線前の分解
斜視図で第２図はその完成したブロツクの上面
図、第３図は底面図、第４図はその結線図であ
る。１……ブリツジ型ダイオード、２……端子、３
……柱状フエライトコア、４……貫通孔、５……
端子板、６……端子ピン、７……配線溝、８……
環状壁、９……柱状突壁、１０……巻線用貫通
孔、１１……巻線部分。 FIG. 1 is an exploded perspective view of an embodiment of the present invention before winding, FIG. 2 is a top view of the completed block, FIG. 3 is a bottom view, and FIG. 4 is a wiring diagram thereof. 1... Bridge type diode, 2... Terminal, 3
...Columnar ferrite core, 4...Through hole, 5...
Terminal board, 6...Terminal pin, 7...Wiring groove, 8...
Annular wall, 9... Column-shaped projecting wall, 10... Through hole for winding, 11... Winding portion.

Claims

[Scope of utility model registration request]

In a double balanced mixer consisting of two pairs of transmission transformers using ferrite cores and four diodes, four
A ferrite core with two through holes, a terminal pin planted on the bottom surface, an annular wall covering the side surface of the ferrite core on the top surface, a projecting wall with four through holes covering the inner surface of the through hole, and a side surface and a bottom surface. A double-balanced mixer block that three-dimensionally combines a terminal plate with a winding groove molded into one body and a bridge-type diode made up of four diodes.