JP3512501B2 - Transformer coil - Google Patents
Transformer coilInfo
- Publication number
- JP3512501B2 JP3512501B2 JP33156294A JP33156294A JP3512501B2 JP 3512501 B2 JP3512501 B2 JP 3512501B2 JP 33156294 A JP33156294 A JP 33156294A JP 33156294 A JP33156294 A JP 33156294A JP 3512501 B2 JP3512501 B2 JP 3512501B2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- wire
- groove
- coil
- transformer
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
- H01F2005/043—Arrangements of electric connections to coils, e.g. leads having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
- H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits
Landscapes
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、各種の映像機器、音響
機器、産業機器、電話器関連機器等に使用されるトラン
ス用コイルに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil for a transformer used in various video equipment, audio equipment, industrial equipment, telephone-related equipment and the like.
【０００２】[0002]
【従来の技術】近年の電子技術の発展は、目ざましいも
のがある。とりわけ、トランスを応用した電子機器、例
えば、多機能化電話装置、ＤＣ−ＤＣコンバータ等で
は、機器の小型、軽量化を果たすべく、トランスの動作
周波数は高周波化され、トランスそのものも小型化が実
現されるようになった。小型化に伴って、ＩＥＣ規格、
又はＵＬ規格に合格することが重要となってくる。これ
らの規格に合格し、かつ小型で高性能で、しかも安全
性、信頼性に優れたトランス用コイルが要求される。2. Description of the Related Art Recent advances in electronic technology have been remarkable. In particular, in electronic devices using transformers, for example, multifunctional telephone devices, DC-DC converters, etc., the operating frequency of the transformers is increased and the transformers themselves are also downsized in order to reduce the size and weight of the devices. Came to be. With the miniaturization, IEC standard,
Or, it becomes important to pass the UL standard. There is a demand for a transformer coil that passes these standards, is compact, has high performance, and is excellent in safety and reliability.
【０００３】図３（ｃ）の斜視図に見られるように、従
来のトランスに使用されるコイルボビンは、電気絶縁材
よりなる筒状巻心１４の両端部に外方に張り出した、上
溝１８を有する上鍔２と、下溝１９を有する下鍔３が設
けられ、一方の下鍔３には巻線端末を引き出すための引
き出し溝１５が設けられ、さらに、四辺形状の対向辺に
沿って、それぞれ複数のピン端子４が下鍔３の外側の面
から細孔に植設されたものである。As can be seen from the perspective view of FIG. 3 (c), the coil bobbin used in the conventional transformer has upper grooves 18 projecting outward at both ends of a cylindrical core 14 made of an electrically insulating material. An upper flange 2 and a lower flange 3 having a lower groove 19 are provided, and one lower flange 3 is provided with a pull-out groove 15 for pulling out a winding terminal, and further, along the opposite sides of the quadrilateral shape, respectively. A plurality of pin terminals 4 are planted in the pores from the outer surface of the lower collar 3.
【０００４】従来のトランスは、次のように組み立てら
れる。前記のようなコイルボビンの巻芯１４にワイヤー
で巻き回す。一次巻線を巻いた上に絶縁テープを巻いて
一次巻線を絶縁する。その絶縁テープ上に３層絶縁電線
を用いて二次巻線を巻き回し、その二次巻線の端末を、
図３（ａ）、図３（ｂ）に示すように、ピン端子４にか
らげる。一次巻線、絶縁テープ巻き、二次巻線、又、絶
縁テープ巻きを施したものを半田槽に浸漬し、からげ部
１７を半田付けする。The conventional transformer is assembled as follows. A wire is attached to the winding core 14 of the coil bobbin as described above.
Turn up at. Insulating the primary winding by winding an insulating tape over the primary winding. 3-layer insulated wire on the insulating tape
The secondary winding is wound using, and the end of the secondary winding is
As shown in FIGS. 3 (a) and 3 (b), the pin terminals 4 are twisted. The primary winding, the insulating tape winding, the secondary winding, and the insulating tape winding are dipped in a solder bath to solder the barbed portion 17.
【０００５】次に、図３（ｄ）に示すように、Ｅ字状コ
ア７の中央の磁脚を巻芯の図３（ｃ）の中心孔９に通
し、反対側に対となるＥ字状（またはＩ字状）コア８を
突き合わせる。その後、両コアの表面にコア固定用のテ
ープを巻いて対のコアを密着させ、組立てが完了する。Next, as shown in FIG. 3 (d), the central magnetic leg of the E-shaped core 7 is passed through the center hole 9 in FIG. 3 (c) of the winding core, and an E-shaped pair is formed on the opposite side. The shape (or I-shaped) cores 8 are butted. Thereafter, a core fixing tape is wrapped around the surfaces of both cores to bring the pair of cores into close contact with each other, thus completing the assembly.
【０００６】基板への取付けは、ピン端子を基板の装着
孔に差し込み、半田付けにより行われる。The mounting on the board is performed by inserting the pin terminals into the mounting holes of the board and soldering.
【０００７】[0007]
【発明が解決しようとする課題】しかし、従来のトラン
スでは、半田付けする際に、半田付けされた箇所から前
記３層絶縁電線の絶縁皮膜が溶ける。例えば、この３層
絶縁電線の絶縁皮膜は、１０ｍｍ以上も溶けて、図３
（ａ），図３（ｂ）の裸線１６のような状態になってし
まう。ＩＥＣ９５０規格によると、一次巻線から二次巻
線の半田付け箇所までの間に６．４ｍｍ以上の裸線があ
ってはならない。又、ＩＥＣ６５規格では、６．０ｍｍ
以上、ＵＬ規格では３．２ｍｍ以上の裸線があってはな
らない。このように、裸線の長さを十分小さくしなけれ
ばならないのに、絶縁皮膜がとけた分、裸線の長さが大
きくなるという欠点があった。即ち、図３（ａ），図３
（ｂ）に示すように、コイルボビン１３の巻芯１４にコ
イルを巻いて巻線の端末を下鍔３のピン端子４にからげ
た後、半田付けすると、その巻線の端末は絶縁皮膜がな
くなる。又、下鍔３の引き出し溝１５の巻線の端末の絶
縁皮膜も溶けてしまうので、裸線の長さＡ1又はＡ2は、
矢印に示す距離になる。従って、この裸線の長さＡ1又
はＡ2は大きくなり、十分に裸線の長さを小さくするこ
とができず、上記規格に不合格となっていた。However, in the conventional transformer, when soldering, the insulating film of the three-layer insulated wire is melted from the soldered portion. For example, the insulating film of this three-layer insulated wire melts by 10 mm or more,
(A), the state like the bare wire 16 of FIG. 3 (b) will result. According to the IEC950 standard, there must be no bare wire of 6.4 mm or more between the primary winding and the soldering point of the secondary winding. In addition, the IEC65 standard is 6.0 mm
As mentioned above, there should be no bare wire of 3.2 mm or more in the UL standard. As described above, although the length of the bare wire must be made sufficiently small, the length of the bare wire becomes large as the insulating film is melted. That is, FIG.
As shown in (b), when a coil is wound around the winding core 14 of the coil bobbin 13 and the end of the winding is twisted to the pin terminal 4 of the lower collar 3 and then soldered, the end of the winding has no insulating film. . Further, since the insulating film at the end of the winding of the pull-out groove 15 of the lower collar 3 is also melted, the bare wire length A 1 or A 2 is
It becomes the distance shown by the arrow. Therefore, the length A 1 or A 2 of the bare wire becomes large, the length of the bare wire cannot be made sufficiently small, and the above standard was not satisfied.
【０００８】本発明は、前記裸線の長さを十分に小さく
することができ、かつ信頼性の高いトランス用コイルを
提供することを目的とする。It is an object of the present invention to provide a highly reliable transformer coil capable of sufficiently reducing the length of the bare wire.
【０００９】[0009]
【課題を解決するための手段】本発明は、鍔の巻線引き
出し部（溝や穴）を狭く形成し、ピン端子植設面側を広
く形成するものである。即ち、本発明は、（１）絶縁材
よりなる筒状巻芯と、該巻芯の両端に形成された鍔とか
らなり、該鍔に巻線を引き出すための引き出し溝と、巻
線と接続するピン端子を有するコイルボビンを用いたト
ランス用コイルにおいて、前記引き出し溝の幅寸法を前
記巻線が通過する程度に小さくし、前記ピン端子を設け
た面から内側に向かい前記溝を広げた空隙を形成すると
ともに、該空隙の前記ピン端子を設けた面からの高さと
前記巻線の半田付け後の裸線の前記ピン端子を設けた面
からの長さを等しく形成したことを特徴とするトランス
用コイルであり、（２）絶縁材よりなる筒状巻芯と、該
巻芯の両端に形成された鍔とからなり、該鍔に巻線を引
き出すための引き出し穴と、巻線と接続するピン端子を
有するコイルボビンを用いたトランス用コイルにおい
て、前記引き出し穴の径寸法を前記巻線が通過する程度
に小さくし、前記ピン端子を設けた面から内側に向かい
前記穴を広げた空隙を形成するとともに、該空隙の前記
ピン端子を設けた面からの高さと前記巻線の半田付け後
の裸線の前記ピン端子を設けた面からの長さを等しく形
成したことを特徴とするトランス用コイルである。According to the present invention, a winding lead-out portion (groove or hole) of a collar is narrowly formed, and a pin terminal installation surface side is widened. That is, the present invention includes (1) a cylindrical winding core made of an insulating material, and flanges formed at both ends of the winding core, a drawing groove for drawing the winding into the flange, and a connection with the winding. in transformer coil using the coil bobbin having a pin terminal that, before the width of the lead-out trenches
If the winding is made small enough to pass through , and a gap is formed in which the groove is widened inward from the surface provided with the pin terminal.
Both the height of the gap from the surface provided with the pin terminal and
The surface of the bare wire after the winding is soldered, on which the pin terminals are provided
A coil for a transformer characterized in that the lengths from the core are formed to be equal . (2) A cylindrical winding core made of an insulating material, and flanges formed at both ends of the winding core, and wound around the flange. In a coil for a transformer using a coil bobbin having a drawing hole for drawing a wire and a pin terminal connected to the winding, the extent to which the winding passes the diameter dimension of the drawing hole
To the inner side from the surface with the pin terminals
To form a void that spread the bore, said voids
Height from the surface where the pin terminals are provided and after soldering the winding
Make the length of the bare wire from the surface on which the pin terminals are provided equal.
It is a coil for a transformer characterized by being formed .
【００１０】[0010]
【作用】下鍔の両端に巻線を引き出すための引き出し溝
は、下鍔の厚さ方向に、上面からピン端子を設けた底面
に向けて、同じ寸法幅の垂設する複数の溝からなってい
る。しかし、この溝は、一次又は二次巻線の端末をピン
端子にからげるための案内溝で、巻芯から自由自在に引
き出すことができ、又、巻線が充分通過できるように、
２〜３ｍｍの寸法幅で垂設されているのが一般的であ
る。The pull-out groove for pulling out the winding wire at both ends of the lower flange is composed of a plurality of grooves vertically extending in the thickness direction of the lower flange from the upper surface to the bottom surface provided with the pin terminals. ing. However, this groove is a guide groove for entwining the end of the primary or secondary winding with the pin terminal, and it can be freely pulled out from the core, and the winding can pass sufficiently,
It is common that they are vertically installed with a width of 2 to 3 mm.
【００１１】このような溝であると、半田付けされる際
に、半田槽の中へコイルボビンのからげ部が浸漬され
て、半田液がこの引き出し溝を伝わり、上昇して、溝を
通過したワイヤーが裸線となるため、裸線の寸法を半田
上げ時間や半田液の温度によりコントロールすることが
難しくなる。With such a groove, when soldering is performed, the barbed portion of the coil bobbin is immersed in the solder bath, the solder solution is transmitted through the lead-out groove, rises, and passes through the groove. Since the wire is a bare wire, it is difficult to control the dimensions of the bare wire by the soldering time and the temperature of the solder solution.
【００１２】そのため、この裸線の長さをコントロール
するために、溝の幅をＵＥＷが通過できるぎりぎりの、
例えば、０.５ｍｍ等の寸法にし、又、溝に、例えば、
円錐台状、又は円錐状等に広げた空隙を設け、この広げ
た空隙に半田液が入りやすいようにした。Therefore, in order to control the length of this bare wire, the width of the groove should be as small as possible so that the UEW can pass through it.
For example, the size is 0.5 mm, and the groove is, for example,
A void that is expanded in a truncated cone shape or a cone shape is provided so that the solder liquid can easily enter the expanded void.
【００１３】しかし、トランス用コイルのコイルボビン
が、例えば、１０ｍｍ以上下鍔の底面が半田液の中に沈
む状態になっても、溝幅の広げた空隙の高さを３ｍｍ以
下に設定しておけば、半田液は、溝が巻線の太さぎりぎ
りの寸法に設計されているので、半田液は上昇しにく
く、３ｍｍ以下の裸線の長さにおさまる。However, even if the coil bobbin of the transformer coil is, for example, 10 mm or more in the state in which the bottom surface of the lower collar is submerged in the solder solution, the height of the widened groove should be set to 3 mm or less. For example, since the groove of the solder solution is designed to have a dimension almost equal to the thickness of the winding wire, the solder solution does not easily rise, and the length of the bare wire is 3 mm or less.
【００１４】又、同様に、溝位置に引き出し溝ではな
く、穴を設け、下鍔の底面部に、例えば、円錐状、又は
円錐台状に広げた空隙を設けておけば、前記広げた空隙
の高さに半田液面の上昇が抑えられるので、裸線の長さ
をコントロールすることに効果がある。上述したよう
に、一つは溝を細く絞ってあり、底面部に広げた空隙を
設け、又、もう一つは穴が形成されていて、その穴が底
面に向かって広がった空隙を設けて、前記空隙には半田
液が入りやすく、溝では３層絶縁電線を通すために半田
液が遮断されて、３層絶縁電線の巻線が裸線となる部分
が短くなり、裸線の長さを十分に小さくできる。Similarly, if a hole is provided at the groove position instead of the pull-out groove, and a bottom portion of the lower brim is provided with a void that is expanded, for example, in a conical shape or a truncated cone shape, the expanded void is provided. Since the rise of the solder liquid level can be suppressed to the height of, it is effective in controlling the length of the bare wire. As mentioned above, one is that the groove is narrowed down and a wide space is provided on the bottom surface, and the other is that a hole is formed and the hole is widened toward the bottom surface. , the gap easily enter the solder liquid, in the grooves is cut off solder liquid to pass three insulated wires, becomes shorter part windings of a three-layer insulated wire is bare, the length of the bare wire Can be made small enough.
【００１５】[0015]
【実施例】以下、本発明の実施例について図面を参照し
て詳述する。図１は、本発明の第一の実施例のトランス
用コイルを示す図である。図１（ａ）は正面図で、図１
（ｂ）は側面図である。図２は、本発明の第二の実施例
のトランス用コイルを示す図である。図２（ａ）は正面
図で、図２（ｂ）は側面図である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a transformer coil according to a first embodiment of the present invention. FIG. 1A is a front view and FIG.
(B) is a side view. FIG. 2 is a diagram showing a transformer coil according to a second embodiment of the present invention. 2A is a front view and FIG. 2B is a side view.
【００１６】図１（ａ）、図１（ｂ）に示すように、本
発明のトランス用コイルに使用されるコイルボビン１３
は、筒状の巻芯１４とその両端部に設けられた上鍔２、
下鍔３とからなっている。上鍔２の上面には、Ｅ字状コ
アの装着を容易にするために、上溝１８が設けられてい
る。又、下鍔３には、Ｅ字状コアの閉磁路部磁脚の嵌入
が容易にできるように、コア幅より広い下溝１９が上溝
１８と対称的に設けられている。さらに、下鍔３には、
下溝１９が設けられていない方の、対向する両辺にはピ
ン端子４ａ，４ｂと、このピン端子４ａ，４ｂを挟むよ
うに、ピン端子４ｃ，４ｄが取り付けられている。この
うち、ピン端子４ａ，４ｂは、下鍔３にあけられた挿入
孔の中に圧入によって挿入されている。また、ピン端子
４ｃ，４ｄは、ピン端子４ａ，４ｂを挿入するそれぞれ
の対向両端に近い位置に設けられた挿入孔の中に圧入す
ることによって、植設されるようになっている。As shown in FIGS. 1A and 1B, the coil bobbin 13 used in the transformer coil of the present invention.
Is a cylindrical winding core 14 and upper collars 2 provided at both ends thereof,
It consists of lower tsuba 3. An upper groove 18 is provided on the upper surface of the upper collar 2 to facilitate mounting of the E-shaped core. Further, the lower flange 3 is provided with a lower groove 19 wider than the core width symmetrically with the upper groove 18 so that the magnetic leg of the closed magnetic circuit portion of the E-shaped core can be easily fitted. Furthermore, the lower collar 3 has
The pin terminals 4a and 4b, and the pin terminals 4c and 4d are attached so as to sandwich the pin terminals 4a and 4b, on both sides facing each other where the lower groove 19 is not provided. Of these, the pin terminals 4a and 4b are inserted into the insertion holes formed in the lower collar 3 by press fitting. Moreover, the pin terminals 4c and 4d are planted by being press-fitted into the insertion holes provided at positions near the opposite ends into which the pin terminals 4a and 4b are inserted.
【００１７】なお、前記ピン端子４ａ，４ｂは、巻線と
接続するピン端子４ｃ，４ｄと同じ外形をしている。ピ
ン端子４ａ，４ｂ，４ｃ，４ｄは、いずれを固定端子、
又は、からげ端子として用いてもよい。The pin terminals 4a and 4b have the same outer shape as the pin terminals 4c and 4d connected to the winding. Any of the pin terminals 4a, 4b, 4c, 4d is a fixed terminal,
Alternatively, it may be used as a barbed terminal.
【００１８】ここで、第一の実施例では、下鍔３のピン
端子側の巻線の３層絶縁電線の引き出し溝を下記の形状
に変更した。図１（ａ），図１（ｂ）に示すように、下
鍔３の上面から底面へ垂設している溝２０は、溝幅を細
く絞り、外径φ０.４ｍｍの３層絶縁電線が、ぎりぎり
通過できる幅、例えば、０.５ｍｍ等の幅に細く絞った
形状にし、ピン端子を植設してある下鍔の底面に近い所
定の位置で、溝２０の部分を円錐台状に広げた空隙２１
を設けた。前記空隙は、円錐状や直方体状や円柱状等で
もよい。Here, in the first embodiment, the lead-out groove of the three-layer insulated wire of the winding on the pin terminal side of the lower collar 3 is changed to the following shape. As shown in FIGS. 1 (a) and 1 (b), the groove 20 vertically extending from the upper surface to the bottom surface of the lower collar 3 has a narrow groove width, and a three-layer insulated wire with an outer diameter of 0.4 mm is used. The width of the groove 20 is narrowed to a width that allows it to pass through, for example, 0.5 mm, and the groove 20 is expanded into a truncated cone shape at a predetermined position near the bottom surface of the lower brim where the pin terminals are planted. Open void 21
Was set up. The void may have a conical shape, a rectangular parallelepiped shape, a cylindrical shape, or the like.
【００１９】コイルボビンが半田槽の半田液の中に浸漬
されて沈み、下鍔３の底面１２側から半田液面に入る
と、上述した図１に示す溝の形であることにより、半田
液面は、溝の円錐台状に広がった空隙にはすぐ入るが、
細く絞られた溝２０の幅には、外径φ０.４ｍｍの３層
絶縁電線が装着されていて、半田液が溝に入らないの
で、細い溝２０の部分に装着されている３層絶縁電線の
絶縁皮膜は溶けることがない。このため、前記円錐台状
に広がった空隙２１を満たした半田液でピン端子にから
げた３層絶縁電線の皮膜は溶けて裸線となるので、前記
円錐台状に広がった空隙の高さをコントロールすること
により、裸線の長さをコントロールできる。実際、上述
したコイルボビンを使用して、半田槽にピン端子４ａ，
４ｂ，４ｃ，４ｄのからげ部分を浸漬して半田付けを行
うと、巻線の３層絶縁電線の絶縁皮膜が溶けて裸線とな
る。第一の実施例のトランス用コイルに用いられるコイ
ルボビンでは、裸線の長さＢ1又はＢ2は従来の裸線の長
さＡ1又はＡ2より小さくなる。When the coil bobbin is immersed in the solder liquid in the solder bath and sinks, and enters the solder liquid surface from the bottom surface 12 side of the lower collar 3, the shape of the groove shown in FIG. Will soon enter the void that has expanded like a truncated cone of the groove,
A three-layer insulated wire with an outer diameter of φ0.4 mm is installed in the narrowed width of the groove 20, and since the solder solution does not enter the groove, the three-layer insulated wire installed in the narrow groove 20 portion. The insulating film of does not melt. Therefore, the coating of the three-layer insulated wire entwined on the pin terminals with the solder solution filling the frustoconical void 21 is melted to form a bare wire, so that the height of the frustoconical void is reduced. By controlling, the length of bare wire can be controlled. In fact, using the coil bobbin described above, the pin terminals 4a,
When the barbed portions of 4b, 4c, and 4d are immersed and soldered, the insulating film of the three-layer insulated wire of the winding is melted to form a bare wire. In the coil bobbin used in the transformer coil of the first embodiment, the bare wire length B 1 or B 2 is smaller than the conventional bare wire length A 1 or A 2 .
【００２０】次に、第二の実施例では、前記下鍔のピン
端子側の巻線の３層絶縁電線の引き出し溝を下記の形状
に変形した。図２（ａ），図２（ｂ）に示すように、第
二の実施例のトランス用コイルに用いられるコイルボビ
ンは、下鍔３の上面から底面へ垂設している溝ではな
く、前記３層絶縁電線が通る穴２２になり、半田付け後
の裸線の長さとほぼ等しい所定の寸法の高さからなる円
錐台状の広がった空隙２３を底面付近に有するものであ
る。前記空隙は、円錐状や直方体状や円柱状等でもよ
い。Next, in the second embodiment, the lead-out groove of the three-layer insulated wire of the winding on the pin terminal side of the lower collar was deformed into the following shape. As shown in FIGS. 2 (a) and 2 (b), the coil bobbin used in the transformer coil of the second embodiment is not a groove vertically extending from the upper surface to the bottom surface of the lower collar 3, but the above-mentioned 3 It becomes a hole 22 through which the layer-insulated electric wire passes, and has a frustoconical widened space 23 having a height of a predetermined dimension almost equal to the length of the bare wire after soldering, near the bottom surface. The void may have a conical shape, a rectangular parallelepiped shape, a cylindrical shape, or the like.
【００２１】上記の第二の実施例では、外径φ０.４ｍ
ｍの３層絶縁電線を通す穴２２が、従来の下鍔の溝位置
に設けられている。この穴２２を通してピン端子に３層
絶縁電線がからげられる。コイルボビンが、半田槽の半
田液の表面に浸漬されると、前記円錐台状に広がった空
隙２３には、すぐ半田液が入って、その部分の３層絶縁
電線の絶縁皮膜を溶かすが、穴の中には電線が通ってい
るので、半田液の上昇は停止し、電線の絶縁皮膜を溶か
すことがない。In the second embodiment, the outer diameter is 0.4 m.
A hole 22 through which the three-layer insulated wire of m is inserted is provided in the groove position of the conventional lower brim. Through this hole 22, the three-layer insulated wire is twisted to the pin terminal. When the coil bobbin is dipped in the surface of the solder solution in the solder bath, the solder solution immediately enters the void 23 that spreads in the shape of a truncated cone, and melts the insulating film of the three-layer insulated wire at that portion, but Since the electric wire passes through the inside, the rise of the solder liquid stops and the insulating film of the electric wire is not melted.
【００２２】従って、前記円錐台状に広がった空隙２３
の高さを所定の寸法にすることにより、この高さが電線
の裸線となる長さとほぼ等しくなるので、前記空隙の高
さをコントロールすることにより、電線の裸線の長さを
コントロールできるものである。Therefore, the void 23 which spreads in the shape of a truncated cone is formed.
By setting the height of the wire to a predetermined value, this height becomes substantially equal to the length of the bare wire of the electric wire. Therefore, by controlling the height of the void, the length of the bare wire of the electric wire can be controlled. It is a thing.
【００２３】図２（ａ）、図２（ｂ）に示すように、こ
の裸線の長さＣ1又はＣ2は、図３（ａ）、図３（ｂ）の
従来の裸線の長さＡ1又はＡ2より小さくなる。As shown in FIGS. 2 (a) and 2 (b), the length C 1 or C 2 of the bare wire is equal to that of the conventional bare wire of FIGS. 3 (a) and 3 (b). It becomes smaller than A 1 or A 2 .
【００２４】なお、本実施例では、一次巻線の例を示し
たが、二次巻線も、上述のような巻線を施されて、半田
付けされる。Although the example of the primary winding is shown in the present embodiment, the secondary winding is also soldered after the winding as described above is applied.
【００２５】その後、Ｅ字状のコア７の中央磁脚を巻芯
の中心孔９［図３（ｃ）参照］に挿入し、反対側からＥ
字状コアを突き合わせた後、これらのコアの上からテー
プを巻き付けることによって、トランスが完成する。
又、本実施例では、縦型のトランスについてのみ説明し
たが、本発明は横型のトランスにも応用できる。Thereafter, the central magnetic leg of the E-shaped core 7 is inserted into the central hole 9 [see FIG. 3 (c)] of the winding core, and E is inserted from the opposite side.
The transformer is completed by abutting the letter cores and then wrapping the tape over the cores.
Further, in the present embodiment, only the vertical type transformer has been described, but the present invention can be applied to the horizontal type transformer.
【００２６】[0026]
【発明の効果】以上述べたように、本発明の第一及び第
二の実施例によれば、裸線の長さを十分に小さくするこ
とができ、より信頼性の高い安定したトランス用コイル
を提供することができた。As described above, according to the first and second embodiments of the present invention, the length of the bare wire can be made sufficiently small, and the coil for transformer with higher reliability and stability can be obtained. Could be provided.
【図１】本発明の第一の実施例であるトランス用コイル
を示す図。図１（ａ）は正面図。図１（ｂ）は側面図。FIG. 1 is a diagram showing a transformer coil according to a first embodiment of the present invention. FIG. 1A is a front view. FIG. 1B is a side view.
【図２】本発明の第二の実施例であるトランス用コイル
を示す図。図２（ａ）は正面図。図２（ｂ）は側面図。FIG. 2 is a diagram showing a transformer coil that is a second embodiment of the present invention. FIG. 2A is a front view. FIG. 2B is a side view.
【図３】従来のトランス用コイル及びボビンを示す図。
図３（ａ）はトランス用コイルの正面図。図３（ｂ）は
トランス用コイルの側面図。図３（ｃ）はボビンの斜視
図。図３（ｄ）はトランスの斜視図。FIG. 3 is a diagram showing a conventional transformer coil and bobbin.
FIG. 3A is a front view of the transformer coil. FIG. 3B is a side view of the transformer coil. FIG. 3C is a perspective view of the bobbin. FIG. 3D is a perspective view of the transformer.
１ トランス ２ 上鍔 ３ 下鍔 ４，４ａ，４ｂ，４ｃ，４ｄ ピン端子 ５ テープ ６ 巻線 ７，８ コア ９ 中心孔 １２ （下鍔の）底面 １３ コイルボビン １４ 巻芯 １５ 引き出し溝 １６ 裸線 １７ からげ部 １８ 上溝 １９ 下溝 ２０ 溝 ２１，２３ 空隙 ２２ 穴 Ａ1，Ａ2 （従来の）裸線の長さ Ｂ1，Ｂ2，Ｃ1，Ｃ2 （本発明の）裸線の長さ1 transformer 2 upper collar 3 lower collar 4, 4a, 4b, 4c, 4d pin terminal 5 tape 6 winding 7, 8 core 9 center hole 12 (lower collar) bottom surface 13 coil bobbin 14 winding core 15 lead groove 16 bare wire 17 Barb 18 Upper groove 19 Lower groove 20 Grooves 21, 23 Voids 22 Holes A 1 , A 2 (conventional) bare wire lengths B 1 , B 2 , C 1 , C 2 (inventive) bare wire lengths
Claims (2)
端に形成された鍔とからなり、該鍔に巻線を引き出すた
めの引き出し溝と、巻線と接続するピン端子を有するコ
イルボビンを用いたトランス用コイルにおいて、前記引
き出し溝の幅寸法を前記巻線が通過する程度に小さく
し、前記ピン端子を設けた面から内側に向かい前記溝を
広げた空隙を形成するとともに、該空隙の前記ピン端子
を設けた面からの高さと前記巻線の半田付け後の裸線の
前記ピン端子を設けた面からの長さを等しく形成したこ
とを特徴とするトランス用コイル。1. A cylindrical winding core made of an insulating material and flanges formed at both ends of the winding core, and a lead-out groove for drawing a winding wire into the collar and a pin terminal connected to the winding wire. In a transformer coil using a coil bobbin having, the width dimension of the lead-out groove is made small to the extent that the winding passes , and a gap is formed in which the groove is widened toward the inside from the surface provided with the pin terminal , The pin terminal in the void
Of the bare wire after soldering the winding and the height from the surface
A coil for a transformer, characterized in that the length from the surface on which the pin terminals are provided is made equal .
端に形成された鍔とからなり、該鍔に巻線を引き出すた
めの引き出し穴と、巻線と接続するピン端子を有するコ
イルボビンを用いたトランス用コイルにおいて、前記引
き出し穴の径寸法を前記巻線が通過する程度に小さく
し、前記ピン端子を設けた面から内側に向かい前記穴を
広げた空隙を形成するとともに、該空隙の前記ピン端子
を設けた面からの高さと前記巻線の半田付け後の裸線の
前記ピン端子を設けた面からの長さを等しく形成したこ
とを特徴とするトランス用コイル。2. A cylindrical winding core made of an insulating material and flanges formed at both ends of the winding core. An extraction hole for extracting a winding wire to the flange and a pin terminal connected to the winding wire are provided. in transformer coil using the coil bobbin with the pull
The diameter of the exposed hole is small enough to allow the winding to pass through.
And, to form the voids spread <br/> the hole toward the inside from the surface provided with the pin terminals, the pin terminals of said void
Of the bare wire after soldering the winding and the height from the surface
A coil for a transformer, characterized in that the length from the surface on which the pin terminals are provided is made equal .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33156294A JP3512501B2 (en) | 1994-12-08 | 1994-12-08 | Transformer coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33156294A JP3512501B2 (en) | 1994-12-08 | 1994-12-08 | Transformer coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08162336A JPH08162336A (en) | 1996-06-21 |
| JP3512501B2 true JP3512501B2 (en) | 2004-03-29 |
Family
ID=18245052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33156294A Expired - Fee Related JP3512501B2 (en) | 1994-12-08 | 1994-12-08 | Transformer coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3512501B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104488043A (en) | 2012-08-01 | 2015-04-01 | 株式会社村田制作所 | Transformer coil |
-
1994
- 1994-12-08 JP JP33156294A patent/JP3512501B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08162336A (en) | 1996-06-21 |
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