JPS5821158Y2 - ignition transformer - Google Patents

Description

【考案の詳細な説明】 本考案は複数個のバーナーを備えた燃焼器具の点火装置
に使用する点火トランスの構造的改良に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structural improvement of an ignition transformer used in an ignition device for a combustion appliance equipped with a plurality of burners.

複数個のバーナーの近傍に放電電極対を各別に設け、該
電極対に生ずる火花放電によって各バーナーに点火する
ようにした点火装置は、第１図に例示するように乾電池
等の低電圧直流電源に発振トランス及びトランジスタ等
を接続して構成した電源装置１から供給される交流電流
を整流素子２で整流してコンデンサ３に充電し、該充電
電荷をスイッチング素子４のブレークオーバーにより点
火トランス５の一次コイル６に放電し該−次コイル６に
対応して巻装した複数個の二次コイル７・・・・・・に
誘起される高電圧二次電流を放電電極対１４・・・・・
・に印加して火花放電を生じさせる構成になり、前記各
放電電極対１４・・・・・・は一方の電極を接地して他
方の電極に各二次コイル７の巻き終り端７ｂを接続し、
二次コイル７の巻き始め端７ａ・・・・・・を−次コイ
ル６の接地端６ａに接続する結線にしたものである。An ignition device in which a pair of discharge electrodes is separately provided in the vicinity of a plurality of burners, and each burner is ignited by the spark discharge generated in the pair of electrodes, uses a low voltage DC power source such as a dry cell battery, as illustrated in Fig. 1. An alternating current supplied from a power supply 1 configured by connecting an oscillation transformer, a transistor, etc. to a rectifying element 2 is used to charge a capacitor 3, and the charged charge is transferred to an ignition transformer 5 by breakover of a switching element 4. A high-voltage secondary current is discharged into the primary coil 6 and is induced in a plurality of secondary coils 7 wound around the secondary coil 6.
・The configuration is such that a spark discharge is caused by applying an electric current to the discharge electrode pair 14, and one electrode of each of the discharge electrode pairs 14 is grounded, and the winding end 7b of each secondary coil 7 is connected to the other electrode. death,
The winding start end 7a of the secondary coil 7 is connected to the ground end 6a of the negative secondary coil 6.

然るに従来の点火トランス５は、第２図に示すように長
い棒状磁心８に巻装された一次コイル６の外周に、夫々
に二次コイル７・・・・・・を巻いた複数個のボビン９
・・・・・・を間隙１２を生じさせて縦列に嵌め、各二
次コイル７・・・・・・の巻き始め端７ａ・・・・・・
を各ボビン９の外端端面から間隙１２内に通して半径方
向に引出し、それを各ボビン９の外周を走行する共通線
に接続した上でその共通線を一次コイル６の接地端６ａ
に接続するか、或は巻き始め端７ａ・・・・・・を各ボ
ビン９の外周で引揃え状にし前記接地端６ａに結線して
いるものであって、各巻き終り端７ｂ・・・・・・も間
隙１２から引出されるので゛、接地側の巻き始め端７ａ
と、隣り合ったボビン９の巻き終り端７ｂの、極性が相
反する二線が短絡するおそれがあり、このため間隙１２
を大きくし且つ巻き始め端７ａと巻終り端７ｂに、高電
圧に耐える特別な絶縁被覆処理を施しているものであっ
て、間隙１２の増大のために嵩高になり、がっ製造コス
トを上昇する欠陥をもつ。However, the conventional ignition transformer 5, as shown in FIG. 9
. . . are fitted in a vertical line with a gap 12 between them, and the winding start end 7a . . . of each secondary coil 7 .
is drawn out in the radial direction from the outer end face of each bobbin 9 through the gap 12, connected to a common line running around the outer periphery of each bobbin 9, and then connected to the ground end 6a of the primary coil 6.
Alternatively, the winding start ends 7a... are aligned around the outer periphery of each bobbin 9 and connected to the ground end 6a, and each winding end end 7b... ... is also pulled out from the gap 12, so that the winding start end 7a on the grounding side
There is a risk that the two wires with opposite polarities at the winding ends 7b of adjacent bobbins 9 may be short-circuited.
The winding start end 7a and the winding end end 7b are treated with a special insulation coating that can withstand high voltage. It has a defect.

本考案はかかる従来の点火トランスの欠点を取除くこと
を目的とするものであって、その一実施例を第３図につ
いて説明する。The present invention aims to eliminate the drawbacks of the conventional ignition transformer, and one embodiment thereof will be described with reference to FIG.

図中８はフェライト等の磁性材料からなる長い棒状磁芯
であって、−次コイル６を略全長にわたって巻装して接
地端６ａを磁芯８の一端がら軸方向に引出し、スイッチ
ング素子４（第１図参照）に接続する巻き終り端を磁芯
８の他の一端から引出す。In the figure, reference numeral 8 denotes a long rod-shaped magnetic core made of a magnetic material such as ferrite, which is wound around the negative coil 6 over almost its entire length, and the ground end 6a is pulled out in the axial direction from one end of the magnetic core 8, and the switching element 4 ( The end of the winding connected to the magnetic core (see FIG. 1) is pulled out from the other end of the magnetic core 8.

９・・・・・・は絶縁材料からなる複数個の円筒形のボ
ビンであって、複数の間隔鍔１１・・・・・・によって
軸方向に分割された数個の巻装溝１０・・・・・・とそ
れら巻装溝１０間の細溝とを有する。9... is a plurality of cylindrical bobbins made of an insulating material, and has several winding grooves 10 divided in the axial direction by a plurality of spacing flanges 11... ... and narrow grooves between the winding grooves 10.

二次コイル７はボビン９の一端の巻装溝１０の外周から
巻き始めて外周に重ね、所定の高さまで巻き上げてがら
細溝に通して順次隣接する巻装溝１０，１０・・・・・
・に巻装して巻き終り端７ｂをボビン９の端面から半径
方向に引出し、巻き始め端７ａをボビン９の一端に形成
した切込溝１３等に通して内周側に引出す。The secondary coil 7 starts winding from the outer periphery of the winding groove 10 at one end of the bobbin 9, overlaps the outer periphery, and winds it up to a predetermined height while passing it through the narrow groove and successively adjacent winding grooves 10, 10...
- The winding end 7b is pulled out in the radial direction from the end surface of the bobbin 9, and the winding start end 7a is passed through the cut groove 13 etc. formed at one end of the bobbin 9 and pulled out to the inner circumferential side.

前記のように二次コイル７を巻装した複数個のボビン９
・・・・・・は−次コイル６の外周に従来通りに順に縦
列させて嵌め込み、各二次コイル７の巻き始め端７ａを
各ボビン９の内周と一次コイル６の外周の間で磁芯８の
軸方向に通して一側端に引出し、それらの引揃えられた
巻き始め端７ａ・・・・・・を外側において一次コイル
６の接地端６ａに接続する。A plurality of bobbins 9 are wound with secondary coils 7 as described above.
. . . are fitted onto the outer periphery of the secondary coil 6 in tandem in the conventional manner, and the winding start end 7a of each secondary coil 7 is magnetically inserted between the inner periphery of each bobbin 9 and the outer periphery of the primary coil 6. It is passed through the core 8 in the axial direction and pulled out to one end, and the aligned winding start ends 7a are connected to the ground end 6a of the primary coil 6 on the outside.

前記において、二次コイルの巻き始め端７ａと一次コイ
ル６とがボビン９内において短絡するのを防止するため
に両者の間に絶縁処理を施す必要があるが、巻き始め端
７ａは同一極性であるから簡単な絶縁処理で充分である
。In the above, in order to prevent the winding start end 7a of the secondary coil and the primary coil 6 from short-circuiting in the bobbin 9, it is necessary to apply insulation treatment between them, but the winding start end 7a has the same polarity. A simple insulation treatment is sufficient.

本考案は前記の説明によって明らがなように、長い磁芯
８に巻装した一次コイル６の外周に縦列に嵌める複数個
のボビン９・・・・刊こ巻装した各二次コイル７・・・
・・・の接地側である巻き始め端７ａを一次コイル６の
外周に接するボビン９の中心孔の内面に通して引出した
上で一次コイル６の挾坤端６ａに接続し、放電電極１４
・・・・・・の各−極に接続する巻き終り端６ｂ・・・
・・・だけを各ボビン９・・・・・・の外周に存在させ
たもので、巻き始め端７ａはボビン９の内周にはじまり
、巻き終り端７ｂはボビン９の外周で終るものであるか
ら隣り合ったボビン９の端面で隣り合った二次コイル７
の巻き始め端７ａと巻き終り端７ｂが交ることは全くな
く、このため両端間で短絡する機会がないから、ボビン
９の前記嵌め込みによって生ずる間隙１２をせいぜい小
さなエヤーギャップが構成されるように狭くしても、隣
り合った二次コイル７の極性が異なる巻き始め端７ａと
巻き終り端７ｂの電気的絶縁を有効に保持することがで
きるものであって、この点火トランスは殆んどの場合絶
縁ケースに納められるから、小嵩に、しかも電気的トラ
ブルを生じさせないようにすることができる効果をもつ
ものである。As is clear from the above description, the present invention includes a plurality of bobbins 9 fitted in tandem around the outer periphery of the primary coil 6 wound around a long magnetic core 8... Each secondary coil 7 is wound around a long magnetic core 8. ...
The winding start end 7a, which is the ground side, of
The end winding end 6b connected to each negative pole of...
... are present on the outer periphery of each bobbin 9. The winding start end 7a starts at the inner periphery of the bobbin 9, and the winding end 7b ends at the outer periphery of the bobbin 9. The secondary coils 7 adjacent to each other on the end faces of the bobbins 9 adjacent to each other
The winding start end 7a and winding end end 7b of the winding end 7a never intersect, and therefore there is no chance of a short circuit between the two ends. Therefore, the gap 12 created by the fitting of the bobbin 9 is configured so that at most a small air gap is formed. Even if it is narrow, it is possible to effectively maintain electrical insulation between the winding start end 7a and the winding end end 7b of the adjacent secondary coils 7, which have different polarities, and this ignition transformer is used in most cases. Since it is housed in an insulating case, it is small in bulk and has the effect of preventing electrical troubles.

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

第１図は本考案の点火トランスを備えた点火装置の電気
配線図、第２図は従来の点火トランスの縦断面図、第３
図は本考案の一実施例の縦断面図である。 ６→−次コイル、６ａ→接地端、７→二次コイル、７ａ
→巻き始め端、７ｂ→巻き終り端、８→棒状磁芯、９→
ボビン、１２→間隙。Figure 1 is an electrical wiring diagram of an ignition device equipped with the ignition transformer of the present invention, Figure 2 is a vertical cross-sectional view of a conventional ignition transformer, and Figure 3 is a longitudinal cross-sectional view of a conventional ignition transformer.
The figure is a longitudinal sectional view of an embodiment of the present invention. 6→-secondary coil, 6a→ground end, 7→secondary coil, 7a
→ Winding start end, 7b → Winding end, 8 → Rod-shaped magnetic core, 9 →
Bobbin, 12 → gap.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 長い棒状磁心８に一次コイル６を巻装するとともに二次
コイル７を巻装した複数個のボビン９を前記−次コイル
６の外周に縦列に嵌め、二次コイルの各巻き始め端７ａ
・・・・・・を−次コイル６の接地端６ａに接続し、各
巻き終り端７ｂ・・・・・・を複数個の放電電極１４・
・・・・・の−極に接続する点火トランスにおいて、前
記二次コイル７・・・・・・の極性が均等な巻き始め端
７ａ・・・・・・の各々を夫々のボビン９の端部から隣
り合ったボビン９の内周と一次コイル６の外周の間に絶
縁処理を施して通して引出した上、−次コイル６の接地
端６ａに接続し、各ボビン９の外周に巻き始め端７ａ・
・・・・・を所在させず、放電電極対１４・・・；・・
の各−極に接続する巻き終り端７ｂ・・・・・・のみを
外周に所在させてなる点火トランス。A primary coil 6 is wound around a long rod-shaped magnetic core 8, and a plurality of bobbins 9 each having a secondary coil 7 wound thereon are fitted in tandem around the outer periphery of the secondary coil 6, and each winding start end 7a of the secondary coil is wound.
. . . is connected to the ground end 6a of the negative coil 6, and each winding end 7b is connected to a plurality of discharge electrodes 14.
In the ignition transformer connected to the negative pole of . . . , each of the winding start ends 7a . After applying insulation treatment between the inner periphery of the adjacent bobbin 9 and the outer periphery of the primary coil 6 and pulling it out, connect it to the ground end 6a of the secondary coil 6 and start winding it around the outer periphery of each bobbin 9. End 7a・
. . . is not located, and the discharge electrode pair 14 . . .
An ignition transformer in which only winding end ends 7b connected to each negative pole of are located on the outer periphery.