JP2008166302A - Thin transformer - Google Patents

Thin transformer Download PDF

Info

Publication number
JP2008166302A
JP2008166302A JP2006350505A JP2006350505A JP2008166302A JP 2008166302 A JP2008166302 A JP 2008166302A JP 2006350505 A JP2006350505 A JP 2006350505A JP 2006350505 A JP2006350505 A JP 2006350505A JP 2008166302 A JP2008166302 A JP 2008166302A
Authority
JP
Japan
Prior art keywords
terminal
winding
binding
binding terminal
horizontal protrusion
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.)
Granted
Application number
JP2006350505A
Other languages
Japanese (ja)
Other versions
JP4807793B2 (en
Inventor
Yutaka Ikeda
豊 池田
Hideyuki Akiyama
英之 秋山
Jun Hironaka
純 廣中
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.)
FDK Corp
Original Assignee
FDK 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 FDK Corp filed Critical FDK Corp
Priority to JP2006350505A priority Critical patent/JP4807793B2/en
Publication of JP2008166302A publication Critical patent/JP2008166302A/en
Application granted granted Critical
Publication of JP4807793B2 publication Critical patent/JP4807793B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Coils Of Transformers For General Uses (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To realize an essentially reliable structure capable of simultaneously solving the problem of disconnection due to solder dip heat and that of disconnection due to the application of outer force to a terminal. <P>SOLUTION: A thin transformer has a bobbin 14, having a drum section 10 and a terminal holding section 12, where a winding section is formed by winding a winding material around the drum section, a winding terminal is connected to a tangle terminal 24 held so that it projects laterally from the terminal holding section, and a magnetic core (E-type core 16) is arranged so that a magnetic circuit is formed inside and outside the winding section. At the terminal holding section, a horizontal projection 30 projecting from a side face along the upper surface of the winding terminal and a vertical projection 32 projecting from the bottom surface at a base end position of the tangle terminal are formed. The coil terminal is wound for a plurality of times so that the horizontal projection, tangle terminal, and vertical projection are surrounded together, and the coil terminal and the winding terminal are connected electrically by soldering the tangle terminal and the horizontal projection together. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、インバータ機器や高圧放電回路等に使用する面実装タイプの薄型トランスに関し、更に詳しく述べると、巻線端末を絡げ端子に巻き付けて半田付けにより電気的に接続する際の端末接続構造に関するものである。   The present invention relates to a surface mount type thin transformer used for an inverter device, a high-voltage discharge circuit, and the like, and more specifically, a terminal connection structure when a winding terminal is wound around a winding terminal and electrically connected by soldering. It is about.

例えば液晶ディスプレイ装置におけるバックライト光源としては、一般に、冷陰極放電管が用いられており、高圧を発生するインバータトランスで点灯駆動される。インバータトランスは、ボビンの巻胴部に巻線材を巻き回すことで１次巻線部と２次巻線部を形成すると共に、端子固定部に突設した複数の端子に巻線端末を接続し、閉磁路となるように磁気コアを装着した構造である。ここで、１次巻線部には比較的大きな電流が流れるので、ポリウレタン被覆ワイヤを複数本撚り合わせた線径０．１ｍｍ以上の電線（太線と呼ばれる）が用いられるのに対して、２次巻線部は高電圧が生じるものの流れる電流は少ないので、線径０．１ｍｍ以下のポリウレタン被覆ワイヤ（例えば銅の線径が０．０３〜０．０４ｍｍ程度）の単線（細線と呼ばれる）が用いられている。これらの線材からなる各巻線端末は、端子に絡げて半田付けされる。半田付けは半田上げとも呼ばれ、溶融半田にディップ（浸漬）することにより行われるが、通常、上記太線と細線とではディップ温度・時間が異なり、それぞれ最適な条件で行われる。   For example, a cold cathode discharge tube is generally used as a backlight light source in a liquid crystal display device, and is lit by an inverter transformer that generates a high voltage. The inverter transformer forms a primary winding portion and a secondary winding portion by winding a winding material around a bobbin winding body portion, and connects winding terminals to a plurality of terminals protruding from the terminal fixing portion. A structure in which a magnetic core is mounted so as to provide a closed magnetic path. Here, since a relatively large current flows in the primary winding portion, an electric wire (called a thick wire) having a wire diameter of 0.1 mm or more obtained by twisting a plurality of polyurethane-coated wires is used, whereas a secondary wire is used. Although a high voltage is generated in the winding portion, the flowing current is small, so a single wire (called a thin wire) of a polyurethane-coated wire having a wire diameter of 0.1 mm or less (for example, a copper wire diameter of about 0.03 to 0.04 mm) is used. It has been. Each winding terminal made of these wires is entangled with a terminal and soldered. Soldering is also referred to as soldering and is performed by dipping (immersing) in molten solder. Usually, the thick line and the thin line have different dip temperatures and times, and are performed under optimum conditions.

太い撚り線の端子への接続については殆ど問題は生じないが、細い単線の端子への接続には２つの大きな問題があり障害が発生し易い。その１つは、巻線材が細い上に、半田上げ時に溶融半田の熱によるストレスを受けて線材が更に細くなり断線し易いという問題、他の１つは、半田上げ後に端子先端部に予期せぬ外力が加わり曲げ変形が生じると、根元の線材絡げ部分も変形して局所的に線材が伸び、それによって断線する恐れがあるという問題である。   There is almost no problem with the connection to a thick stranded wire terminal, but there are two major problems with the connection to a thin single wire terminal and a failure is likely to occur. One of the problems is that the winding material is thin and the wire material is further thinned due to the stress caused by the heat of the molten solder when the solder is raised, and the other is expected to break at the terminal tip after soldering. When an external force is applied and bending deformation occurs, the wire-entangled portion at the base is also deformed and the wire is locally stretched, which may cause disconnection.

前者の半田上げ時の溶融半田の熱による断線の問題については、絡げ端子近傍に熱伝導度の大きな放熱部材を添設する解決手法が提案されている（特許文献１参照）。これは、絡げ端子の片方の側面に放熱部材を添設し、絡げ端子と放熱部材に一緒に巻線端末を巻き付け、放熱部材の少なくとも一部が溶融半田に触れないように露出した状態で半田上げすることにより、溶融半田の熱の一部が放熱部材に移動し、半田熱に起因する線材の断線を回避しようとするものである。   Regarding the problem of disconnection due to the heat of the molten solder at the time of soldering, there has been proposed a solution technique in which a heat dissipating member having a high thermal conductivity is provided in the vicinity of the binding terminal (see Patent Document 1). This is a state in which a heat dissipation member is attached to one side of the binding terminal, the winding terminal is wound around the binding terminal and the heat dissipation member, and at least a part of the heat dissipation member is exposed so as not to touch the molten solder. By soldering up, a part of the heat of the molten solder moves to the heat radiating member, and an attempt is made to avoid disconnection of the wire due to the solder heat.

しかし、このような端末接続構造は、放熱部材の一部が溶融半田に触れないようにする必要があるため、溶融半田の液面に対する放熱部材の位置を厳密に制御する必要があり、肉厚の薄い放熱部材を高速に且つ正確に半田ディップする作業は、容易とは言い難い。   However, since such a terminal connection structure needs to prevent a part of the heat radiating member from touching the molten solder, it is necessary to strictly control the position of the heat radiating member with respect to the liquid surface of the molten solder. It is difficult to say that solder dip of a thin heat dissipation member at high speed and accurately is easy.

また、このような端末接続構造では、後者の端子先端部への予期せぬ外力印加に伴う断線の問題については、必ずしも完全に解決できるとは限らない。一部が溶融半田に触れないようにする必要があるため、放熱部材は絡げ端子の片方の側面に添設しているからである。ボビンの巻胴部に巻線を施しただけの状態（磁気コアを未だ装着していない状態）では、取り扱いが難しく、組み立て作業中に絡げ端子の先端近傍に予期せぬ外力が作用することがあり、それによって絡げ端子が変形して、線材の断線が生じる恐れがある。絡げ端子の片方の側面に添設されている放熱部材では、この変形を防止し難い。
特開平１１−３２９８６４号公報 In such a terminal connection structure, the problem of disconnection due to unexpected application of external force to the terminal tip of the latter cannot always be completely solved. This is because a part of the heat dissipating member is attached to one side surface of the binding terminal because it is necessary to prevent a part from touching the molten solder. Handling is difficult when the bobbin winding body is simply wound (when the magnetic core is not yet mounted), and unexpected external force acts near the tip of the binding terminal during assembly. As a result, the binding terminal may be deformed, and the wire may be disconnected. With the heat dissipating member attached to one side surface of the binding terminal, it is difficult to prevent this deformation.
JP 11-329864 A

本発明が解決しようとする課題は、溶融半田の熱による線材の細りの問題と端子への外力印加に伴う線材の伸びの問題を同時に解決でき、それによって断線を防止できるような本質的に信頼性の高い構造を実現することである。   The problem to be solved by the present invention is that the problem of thinning of the wire due to the heat of the molten solder and the problem of the elongation of the wire accompanying the application of external force to the terminal can be solved at the same time, so that the disconnection can be prevented. It is to realize a highly structured structure.

本発明は、巻胴部と端子保持部を備えたボビンを有し、前記巻胴部に巻線材を巻き回すことで巻線部が形成され、前記端子保持部から横方向に突出するように保持されている絡げ端子に巻線端末が接続され、巻線部の内外で磁路を形成するように磁気コアを配置する面実装構造のトランスにおいて、前記端子保持部に、絡げ端子の上面に沿って側面から突出する水平突起と、絡げ端子の基端位置で底面から突出する垂直突起とを形成し、巻線端末が水平突起と絡げ端子と垂直突起を一緒に囲むように複数回巻き付けられ、絡げ端子を水平突起と一緒に半田上げすることで巻線端末と絡げ端子とが電気的に接続されるようにしたことを特徴とする薄型トランスである。   The present invention has a bobbin having a winding drum portion and a terminal holding portion, and a winding portion is formed by winding a winding material around the winding drum portion, and protrudes laterally from the terminal holding portion. In a transformer having a surface mounting structure in which a winding terminal is connected to the held binding terminal and a magnetic core is arranged so as to form a magnetic path inside and outside the winding portion, the terminal holding portion is connected with the binding terminal. Form a horizontal protrusion that protrudes from the side surface along the top surface and a vertical protrusion that protrudes from the bottom surface at the base end position of the binding terminal so that the winding terminal surrounds the horizontal protrusion, the binding terminal, and the vertical protrusion together A thin transformer characterized in that the winding terminal and the binding terminal are electrically connected by being wound a plurality of times and soldering the binding terminal together with the horizontal protrusion.

本発明では、例えば、巻線端末が水平突起と絡げ端子と垂直突起を一緒に囲むように複数回巻き付けられ、更に水平突起と絡げ端子を囲むように複数回巻き付けられて、絡げ端子が水平突起と一緒に半田上げされている構造とする。ここで、水平突起は、その断面形状が、幅は絡げ端子の幅以下で、上側縁が丸め面取りされた形状をなしているのが好ましい。   In the present invention, for example, the winding terminal is wound a plurality of times so as to surround the horizontal protrusion, the binding terminal, and the vertical protrusion together, and is further wound a plurality of times so as to surround the horizontal protrusion and the binding terminal. Is structured to be soldered together with horizontal protrusions. Here, it is preferable that the horizontal protrusion has a cross-sectional shape in which the width is equal to or less than the width of the binding terminal and the upper edge is rounded and chamfered.

本発明の薄型トランスでは、端子保持部に、巻線端末の絡げ端子の上面に沿って側面から突出する水平突起と、絡げ端子の基端位置で底面から突出する垂直突起とが形成され、巻線端末が水平突起と絡げ端子と垂直突起を一緒に囲むように複数回巻き付けられて、絡げ端子を水平突起と一緒に半田上げすることで巻線端末と絡げ端子とが電気的に接続される構造であり、線材が複数本束ねられていることと、溶融半田の熱の一部が垂直突起側へと逃げることのため、半田熱による線細りが軽減され、断線を防止できる。半田上げ作業は、絡げ端子及び水平突起の全体が溶融半田にディップされればよいため、厳密な位置制御は不要であり、容易に実施できる。   In the thin transformer of the present invention, the terminal holding part is formed with a horizontal protrusion protruding from the side surface along the top surface of the binding terminal of the winding terminal and a vertical protrusion protruding from the bottom surface at the base end position of the binding terminal. The winding terminal is wound a plurality of times so as to surround the horizontal protrusion and the tangled terminal and the vertical protrusion together, and the winding terminal and the tangled terminal are electrically connected by soldering the tangled terminal together with the horizontal protrusion. The structure is connected to each other, and since multiple wires are bundled and part of the heat of the molten solder escapes to the vertical projection side, wire thinning due to solder heat is reduced and disconnection is prevented. it can. The soldering operation only needs to dip the entire binding terminal and the horizontal protrusion into the molten solder, so that strict position control is unnecessary and can be easily performed.

また本発明の薄型トランスでは、絡げ端子の上面に水平突起が位置しているため、絡げ端子の折れ強度（反り強度）が向上し、線材の局部的な伸びによる断線を防止できる。なお、水平突起は、絡げ端子の上面のみに接しているだけであるため、端子と線材（巻線端末）との半田上げ面積が過度に低下することは無く、安定した半田上げが可能となる。   In the thin transformer of the present invention, since the horizontal protrusion is located on the upper surface of the binding terminal, the bending strength (warping strength) of the binding terminal is improved, and disconnection due to local elongation of the wire can be prevented. In addition, since the horizontal protrusion is only in contact with only the upper surface of the binding terminal, the soldering area between the terminal and the wire (winding terminal) does not decrease excessively, and stable soldering is possible. Become.

図１は本発明に係る薄型トランスの一実施例を示す一部破断斜視図であり、Ａは上面側から見た状態を、Ｂは底面側から見た状態を表している。また、図２はその薄型トランスの説明図であり、Ａは平面、Ｂは正面、Ｃは底面をそれぞれ表しており、Ｄは要部の拡大図である。これは、放電管点灯用として好適なインバータトランスの例である。   FIG. 1 is a partially broken perspective view showing an embodiment of a thin transformer according to the present invention, in which A shows a state seen from the top surface side and B shows a state seen from the bottom surface side. FIG. 2 is an explanatory view of the thin transformer, wherein A is a plane, B is a front, C is a bottom, and D is an enlarged view of a main part. This is an example of an inverter transformer suitable for lighting a discharge tube.

この薄型トランスは面実装タイプであり、巻胴部１０と該巻胴部１０の両端に位置する巻枠兼用の端子保持部１２を備えたボビン１４を有し、前記巻胴部１０に巻線材を巻き回すことで巻線部が形成され（なお、各図では巻線材は省略して描いてある）、前記端子保持部１２から横方向に突設されている一部の端子に巻線端末を絡げて半田上げされ、巻線部の内外で磁路を形成するように磁気コアが配置される構造である。   This thin transformer is a surface mount type, and has a bobbin 14 provided with a winding drum portion 10 and a terminal holding portion 12 serving as a winding frame located at both ends of the winding drum portion 10. Is wound to form a winding portion (note that the winding material is omitted in each drawing), and a winding terminal is connected to a part of the terminal protruding in the lateral direction from the terminal holding portion 12 In this structure, the magnetic core is disposed so as to form a magnetic path inside and outside the winding portion.

磁気コアは、フェライトなどからなる２個のＥ型コア１６の組み合わせからなる。ここでＥ型コア１６の中脚部、両方の外脚部、及びそれらの連結部はいずれも断面矩形状であり、それらＥ型コア同士の各脚部の先端面を対向配置することで閉磁路構造となる。   The magnetic core is composed of a combination of two E-type cores 16 made of ferrite or the like. Here, the middle leg portion of the E-type core 16, both outer leg portions, and their connecting portions are all rectangular in cross section, and the end surfaces of the leg portions of the E-type cores are arranged opposite to each other to close the magnet. It becomes a road structure.

ボビン１４は、筒状の巻胴部１０の両端に巻枠２０を形成し、該巻枠２０の下方に連続して端子保持部１２が形成されている構造である。巻胴部１０は、前記Ｅ型コア１６の中脚部が丁度嵌入可能な四角筒状であり、両方の外脚部が巻線部の外側を取り囲むように配置される構造である。端子保持部１２の側面から横方向に突設されている複数の端子は、クランク状の折れ曲がっている長い端子と水平に突出しているだけの短い端子の２種類がある。長い端子は、１次巻線用、固定専用、２次巻線用の実装端子２２であり、短い端子は２次巻線の絡げ端子２４である。図１のＡでは、右側の長い実装端子２２が１次巻線用と固定専用、左側の長い実装端子２２が２次巻線用（絡げ端子２４の隣りの端子）と固定専用である。なお、短い絡げ端子２４は、その隣りの長い２次巻線用の実装端子２２と連続一体の金属部材であり、それらの連続部分で端子保持部１２により保持されている。   The bobbin 14 has a structure in which a winding frame 20 is formed at both ends of a cylindrical winding body portion 10 and a terminal holding portion 12 is formed continuously below the winding frame 20. The winding drum portion 10 has a rectangular tube shape in which the middle leg portion of the E-type core 16 can be just inserted, and has a structure in which both outer leg portions surround the outside of the winding portion. There are two types of terminals protruding in the lateral direction from the side surface of the terminal holding part 12, a long terminal that is bent in a crank shape and a short terminal that only protrudes horizontally. The long terminal is the mounting terminal 22 for the primary winding, only for fixing, and the secondary winding, and the short terminal is the binding terminal 24 of the secondary winding. In FIG. 1A, the right long mounting terminal 22 is for primary winding and fixing only, and the left long mounting terminal 22 is for secondary winding (terminal adjacent to the binding terminal 24) and fixing only. Note that the short binding terminal 24 is a metal member that is continuously integrated with the mounting terminal 22 for the adjacent long secondary winding, and is held by the terminal holding portion 12 at these continuous portions.

巻胴部１０には１次巻線と２次巻線が巻き付けられる。巻胴部１０に複数のセパレータ２６を配設し、巻線領域を区分している。例えば、１次巻線としてφ０．３５ｍｍのポリウレタン被覆電線（撚り線）を用い、２次巻線にはφ０．０３ｍｍのポリウレタン被覆電線（単線）を用いる。太線である１次巻線の端末は、１次巻線用の実装基板端子の基部に直接絡げて半田上げされる。他方、２次巻線の端末は、絡げ端子２４に絡げて半田上げされる。   A primary winding and a secondary winding are wound around the winding body 10. A plurality of separators 26 are disposed on the winding body 10 to divide the winding region. For example, a polyurethane-coated electric wire (stranded wire) of φ0.35 mm is used as the primary winding, and a polyurethane-coated electric wire (single wire) of φ0.03 mm is used as the secondary winding. The end of the primary winding, which is a thick line, is directly tangled to the base of the mounting board terminal for the primary winding and soldered. On the other hand, the end of the secondary winding is soldered to the binding terminal 24.

本発明の特徴は、絡げ端子２４近傍の形状と巻線端末の接続構造にある。前記端子保持部１２には、２次巻線端末の絡げ端子２４の上面に沿って側面から突出する水平突起３０と、絡げ端子２４の基端位置で底面から突出する垂直突起３２とが形成されている。絡げ端子２４は、短く水平に突出し、絡げた巻線端末が外れないように先端が逆三角形状に広がった形状である。水平突起３０は、端子保持部１２と一体であり、絡げ端子２４の基部（逆三角形状の先端を除く部分）上面に沿うような長さで設けられている。その断面形状は、幅が絡げ端子２４の幅以下で、上側縁が面取りされた形状をなしている。垂直突起３２も端子保持部１２と一体であり、絡げ端子２４の基端側の幅が該絡げ端子２４の幅以下となり、平面的に見て絡げ端子２４から続くような細長状である。即ち、水平突起３０や垂直突起３２を含めて、端子保持部１２や巻胴部１０などからなるボビン１４は、合成樹脂の一体成型品である。巻線部の外周は絶縁部材（絶縁カバーあるいは絶縁テープなど）３４で覆われ、磁気コアとの絶縁が図られている。   The feature of the present invention lies in the shape in the vicinity of the binding terminal 24 and the connection structure of the winding terminal. The terminal holding part 12 includes a horizontal protrusion 30 protruding from the side surface along the upper surface of the binding terminal 24 of the secondary winding terminal, and a vertical protrusion 32 protruding from the bottom surface at the base end position of the binding terminal 24. Is formed. The binding terminal 24 has a shape that protrudes short and horizontally, and has a tip that spreads in an inverted triangle shape so that the wound winding terminal does not come off. The horizontal protrusion 30 is integral with the terminal holding part 12 and is provided with a length along the upper surface of the base of the binding terminal 24 (part excluding the tip of the inverted triangle). The cross-sectional shape is a shape in which the width is equal to or smaller than the width of the binding terminal 24 and the upper edge is chamfered. The vertical protrusion 32 is also integrated with the terminal holding portion 12, and the width of the binding terminal 24 on the base end side is equal to or less than the width of the binding terminal 24, and is elongated so as to continue from the binding terminal 24 in plan view. is there. That is, the bobbin 14 including the terminal holding part 12 and the winding drum part 10 including the horizontal protrusions 30 and the vertical protrusions 32 is an integrally molded product of synthetic resin. The outer periphery of the winding part is covered with an insulating member (insulating cover or insulating tape) 34 to insulate it from the magnetic core.

巻線端末を絡げた状態を図２のＤに拡大して示す。細い（線径０．０３ｍｍ程度）ポリウレタン被覆電線（単線）からなる２次巻線の端末３６は、水平突起３０と絡げ端子２４と垂直突起３２を一緒に取り囲むように複数回（３回以上、例えば１０回程度）巻き付けられて束ねられ、更に水平突起３０と絡げ端子２４を一緒に取り囲むように複数回束ねて巻き付けられる。このような多少複雑な巻線端末巻き回し構造であるが、絡げ端子２４が短いため、自動巻線機等により容易に絡げ作業が行える。この状態で、絡げ端子２４が水平突起３０と共に、端子保持部１２の側面まで（従って、水平突起３０のほぼ全体が）半田上げされる。即ち、図２のＢあるいはＤにおいて、薄型トランス全体を９０°反時計回りに回転させて立てた状態で、溶融半田にディップする。これにより半田上げが行われ、２次巻線の端末３６と絡げ端子２４とが電気的に接続されることになる。   A state in which the winding terminal is entangled is shown enlarged in FIG. The terminal 36 of the secondary winding made of a thin (wire diameter of about 0.03 mm) polyurethane-coated electric wire (single wire) is plural times (three times or more) so as to surround the horizontal protrusion 30, the binding terminal 24 and the vertical protrusion 32 together. (For example, about 10 times) is wound and bundled, and is further bundled and wound a plurality of times so as to surround the horizontal protrusion 30 and the binding terminal 24 together. Although this is a somewhat complicated winding terminal winding structure, since the binding terminal 24 is short, the binding operation can be easily performed by an automatic winding machine or the like. In this state, the binding terminal 24 is soldered up to the side surface of the terminal holding portion 12 together with the horizontal protrusion 30 (therefore, almost the entire horizontal protrusion 30). That is, in B or D of FIG. 2, the entire thin transformer is rotated 90 ° counterclockwise and dip in the molten solder. As a result, soldering is performed, and the terminal 36 of the secondary winding and the binding terminal 24 are electrically connected.

このような構造では、半田上げ処理する際の溶融半田の液面は端子保持部１２の側面までであり、細い２次巻線の端末３６は束ねられているので、単線状態となっている巻線引出し部分は溶融半田には触れない。従って、２次巻線の端末の半田熱による線細りは生じず、断線の恐れはない。なお、２次巻線の端末は、垂直突起３２を取り巻くように複数回互いに密着して巻き付けられるので、半田熱が作用しても垂直突起３２で熱が吸収され線材が細くなり難く、たとえ細くなっても束ねられているので断面積が減ることの問題や、強度的な問題は生じない。更に、絡げ端子２４の上面には水平突起３０が添設されているため、トランス組立時に予期せぬ上向きの外力が作用したとしても、絡げ端子２４が変形し難く（反り難く）、従って線材に延び力が作用しないため、それによる断線の恐れもない。更に、絡げ端子２４の上面にのみ水平突起３０が接し、絡げ端子２４の両側面と下面は露出し線材と接している状態であり、絡げ端子２４と線材との半田付け面積を十分に確保することが可能であり、安定した半田上げを実施できる。   In such a structure, the liquid level of the molten solder at the time of the soldering process is up to the side surface of the terminal holding part 12, and the terminals 36 of the thin secondary winding are bundled. Do not touch the molten solder in the wire drawing part. Therefore, no wire thinning due to solder heat at the end of the secondary winding occurs, and there is no fear of disconnection. Since the end of the secondary winding is wound in close contact with each other a plurality of times so as to surround the vertical protrusion 32, even if soldering heat is applied, heat is absorbed by the vertical protrusion 32 and the wire rod is not easily thinned. Since they are bundled, there is no problem of reduction in cross-sectional area or strength problems. Further, since the horizontal protrusion 30 is attached to the upper surface of the binding terminal 24, even if an unexpected upward external force is applied during assembly of the transformer, the binding terminal 24 is not easily deformed (not easily warped). Since no force acts on the wire, there is no fear of disconnection. Further, the horizontal protrusion 30 is in contact only with the upper surface of the binding terminal 24, and both side surfaces and the lower surface of the binding terminal 24 are exposed and in contact with the wire, so that the soldering area between the binding terminal 24 and the wire is sufficient. Therefore, stable soldering can be performed.

本発明に係る薄型トランスの一実施例を示す一部破断斜視図。The partially broken perspective view which shows one Example of the thin transformer which concerns on this invention. その薄型トランスの説明図。Explanatory drawing of the thin transformer.

符号の説明Explanation of symbols

１０ 巻胴部
１２ 端子保持部
１４ ボビン
１６ Ｅ型コア
２４ 絡げ端子
３０ 水平突起
３２ 垂直突起 DESCRIPTION OF SYMBOLS 10 Winding body part 12 Terminal holding part 14 Bobbin 16 E type core 24 Tying terminal 30 Horizontal protrusion 32 Vertical protrusion

Claims (3)

巻胴部と端子保持部を備えたボビンを有し、前記巻胴部に巻線材を巻き回すことで巻線部が形成され、前記端子保持部から横方向に突出するように保持されている絡げ端子に巻線端末が接続され、巻線部の内外で磁路を形成するように磁気コアを配置する面実装構造のトランスにおいて、
前記端子保持部に、絡げ端子の上面に沿って側面から突出する水平突起と、絡げ端子の基端位置で底面から突出する垂直突起とを形成し、巻線端末が水平突起と絡げ端子と垂直突起を一緒に囲むように複数回巻き付けられ、絡げ端子を水平突起と一緒に半田上げすることで巻線端末と絡げ端子とが電気的に接続されるようにしたことを特徴とする薄型トランス。 A bobbin having a winding drum portion and a terminal holding portion is formed, and a winding portion is formed by winding a winding material around the winding drum portion, and is held so as to protrude laterally from the terminal holding portion. In the transformer of the surface mount structure in which the winding terminal is connected to the binding terminal and the magnetic core is arranged so as to form a magnetic path inside and outside the winding portion,
The terminal holding portion is formed with a horizontal protrusion protruding from the side surface along the top surface of the binding terminal and a vertical protrusion protruding from the bottom surface at the base end position of the binding terminal, and the winding terminal is bound to the horizontal protrusion. Wrapped multiple times to surround the terminal and vertical projection together, and the winding terminal and soldering terminal are electrically connected by soldering the binding terminal together with the horizontal projection. A thin transformer. 巻線端末が水平突起と絡げ端子と垂直突起を一緒に囲むように複数回巻き付けられ、更に水平突起と絡げ端子を囲むように複数回巻き付けられて、絡げ端子が水平突起と一緒に半田上げされている請求項１記載の薄型トランス。   The winding terminal is wound a plurality of times so as to surround the horizontal protrusion and the binding terminal and the vertical protrusion together, and further wound a plurality of times so as to surround the horizontal protrusion and the binding terminal. The thin transformer according to claim 1, which is soldered. 水平突起は、その断面形状が、幅は絡げ端子の幅以下で、上側縁が丸め面取りされた形状をなしている請求項１又は２記載の薄型トランス。   The thin transformer according to claim 1 or 2, wherein the horizontal protrusion has a cross-sectional shape having a width equal to or smaller than the width of the binding terminal and a rounded chamfered upper edge.
JP2006350505A 2006-12-26 2006-12-26 Thin transformer Active JP4807793B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006350505A JP4807793B2 (en) 2006-12-26 2006-12-26 Thin transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006350505A JP4807793B2 (en) 2006-12-26 2006-12-26 Thin transformer

Publications (2)

Publication Number Publication Date
JP2008166302A true JP2008166302A (en) 2008-07-17
JP4807793B2 JP4807793B2 (en) 2011-11-02

Family

ID=39695440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006350505A Active JP4807793B2 (en) 2006-12-26 2006-12-26 Thin transformer

Country Status (1)

Country Link
JP (1) JP4807793B2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62177017U (en) * 1986-04-30 1987-11-10
JPH0476018U (en) * 1990-11-16 1992-07-02
JPH0536809U (en) * 1991-10-17 1993-05-18 株式会社トーキン Bobbin with pin terminal
JPH08203763A (en) * 1995-01-30 1996-08-09 Seikosha Co Ltd Connection structure of coil terminal in coil bobbin
JPH11329864A (en) * 1998-05-14 1999-11-30 Fuji Elelctrochem Co Ltd Winding component and manufacture thereof
JP2001307929A (en) * 2000-04-27 2001-11-02 Tamura Seisakusho Co Ltd Small transformer and method of tying its lead wire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62177017U (en) * 1986-04-30 1987-11-10
JPH0476018U (en) * 1990-11-16 1992-07-02
JPH0536809U (en) * 1991-10-17 1993-05-18 株式会社トーキン Bobbin with pin terminal
JPH08203763A (en) * 1995-01-30 1996-08-09 Seikosha Co Ltd Connection structure of coil terminal in coil bobbin
JPH11329864A (en) * 1998-05-14 1999-11-30 Fuji Elelctrochem Co Ltd Winding component and manufacture thereof
JP2001307929A (en) * 2000-04-27 2001-11-02 Tamura Seisakusho Co Ltd Small transformer and method of tying its lead wire

Also Published As

Publication number Publication date
JP4807793B2 (en) 2011-11-02

Similar Documents

Publication Publication Date Title
TWI315075B (en)
KR100672914B1 (en) Leakage transformer
US9299491B2 (en) Transformer coil
US8648685B2 (en) Transformer and flat panel display device including the same
US20120038448A1 (en) Transformer and display device using the same
US20110260820A1 (en) Bobbin and transformer having such bobbin
JP2008112753A (en) Lateral low-profile coil part, and soldering method of its winding terminal
WO2005117039A1 (en) Transformer
JP4737621B2 (en) Winding parts
JP4584040B2 (en) Coil terminal
JP4807793B2 (en) Thin transformer
JP5151432B2 (en) Winding bobbins
JP7186446B2 (en) Resin mold solenoid coil and solenoid valve with the same
JP2009054875A (en) Inverter transformer
JP5070848B2 (en) Trance
JP2007208228A (en) Compound winding transformer and lamp lighting device
KR20150045880A (en) Electric-element mount seat
US7456718B1 (en) Wire-arranging pin and winding frame and transformer having same
JP2007266639A (en) Transformer
JP2009212128A (en) Wound component
JP5120169B2 (en) Inductance component manufacturing method
KR200415094Y1 (en) A Bobbin of Inverter Transformer
JP7341745B2 (en) Coil parts and bobbins
CN109841396B (en) Electronic device and method for manufacturing electronic device
JP2024019724A (en) Device having winding carrier and magnetic core, and manufacturing method thereof

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20091029

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110427

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110511

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110701

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110810

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110811

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140826

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4807793

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R255 Notification that request for automated payment was rejected

Free format text: JAPANESE INTERMEDIATE CODE: R2525

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250