JP2008177453A

JP2008177453A - Winding structure

Info

Publication number: JP2008177453A
Application number: JP2007011033A
Authority: JP
Inventors: Yoshikazu Tawara; 佳和田原; Masahide Onishi; 正秀大西; Soshiyo Takizawa; 素章滝沢
Original assignee: TDK Lambda Corp
Current assignee: TDK Lambda Corp
Priority date: 2007-01-22
Filing date: 2007-01-22
Publication date: 2008-07-31

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding structure with which insulation distance between windings can be secured. <P>SOLUTION: A coil wining 1 is formed of a metal plate, wherein the winding is obtained by forming a shape in which almost annular winding plates 2, 3 and a half-arc half-winding plate 4 are mutually connected. On the inner radius sides of winding portions 6, 26 and of a half-winding portion 15, tabs 11, 16 and 31 are formed, respectively. When the coil winding 1 is mounted on an E-shaped core 40, tabs 11, 16 and 31 are bumped against the center leg of the E-shaped core 40, resulting in keeping a distance of a size of the tabs 11, etc. between the inner radius portions except the tabs 11, etc. of the winding plates 2, 3 and of the half-winding plate 4 and the center leg, and consequently securing a creeping distance in the horizontal direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、導電性部材を巻き回してなり、コアに装着される巻線構造に関する。 The present invention relates to a winding structure in which a conductive member is wound and attached to a core.

例えばスイッチング電源装置に代表される電源装置には、トランスやチョーク等のインダクタンス素子が使用される。このようなインダクタンス素子は、一般的に磁性体を焼結してなるコアに導電性部材からなる巻線を巻装して構成されるが、環状の金属板単体若しくは複数の環状金属板を螺旋状に連結してなる巻線構造を有したものが周知である。 For example, an inductance element such as a transformer or a choke is used in a power supply device represented by a switching power supply device. Such an inductance element is generally configured by winding a winding made of a conductive member around a core formed by sintering a magnetic material, and a spiral metal plate or a plurality of annular metal plates are spirally wound. One having a winding structure connected in a shape is well known.

例えば、特許文献１には、金属板を、少なくとも１つの円形状部と他の同じ円形状部が接続するように打ち抜き、円形状部と円形状部の接線を山に又は谷に交互に折り曲げるようにした巻線構造が開示されている。当該巻線構造において、巻線同士の絶縁は、円形状部のうち折り返して相互に重なる部分に絶縁板を層間に入れることにより行われ、巻線とコアの中央脚との絶縁は、巻線の中心孔に挿通される中央脚の側周面を絶縁材からなる絶縁筒で覆うことにより行われる。
特開平６−７７０７７号公報 For example, in Patent Document 1, a metal plate is punched out so that at least one circular portion and another same circular portion are connected, and a tangent line between the circular portion and the circular portion is alternately bent into a mountain or a valley. Such a winding structure is disclosed. In the winding structure, the insulation between the windings is performed by putting an insulating plate between the circular portions of the circular portion and overlapping each other, and the insulation between the winding and the central leg of the core is performed by winding. This is done by covering the side peripheral surface of the central leg inserted through the central hole with an insulating cylinder made of an insulating material.
JP-A-6-77077

しかし、上記特許文献１に開示されるような、板状巻線と絶縁板とを積層する場合、とりわけ内径が円であるものにおいては、板状巻線がコア中心の絶縁筒に直接接し、絶縁板を介して隣接する板状巻線間の沿面距離が確保され無いため、その絶縁距離は絶縁板の板厚に略等しくなる。 However, when laminating the plate-like winding and the insulating plate as disclosed in the above-mentioned Patent Document 1, particularly in the case where the inner diameter is a circle, the plate-like winding is in direct contact with the insulating cylinder at the center of the core, Since the creeping distance between the adjacent plate windings is not ensured through the insulating plate, the insulating distance is substantially equal to the thickness of the insulating plate.

そこで本発明は上記問題点に鑑み、巻線間の絶縁距離を確保することができる巻線構造を提供することを目的とする。 In view of the above problems, an object of the present invention is to provide a winding structure that can secure an insulation distance between windings.

本発明における請求項１の巻線構造では、コアに巻装される巻装部を有する巻線体と絶縁部材とを積層してなる巻線構造において、前記巻装部に前記コアに当接する突片を設けている。 In the winding structure according to claim 1 of the present invention, in a winding structure in which a winding body having a winding portion wound around a core and an insulating member are laminated, the winding portion comes into contact with the core. Protrusions are provided.

このようにすると、コアに突片を突き当てることで、巻線体における突片以外の部分は突片のサイズ（突出量）だけ距離が離れ、水平方向で沿面距離を確保することができる。 In this way, by projecting the projecting piece against the core, the portion other than the projecting piece in the winding body is separated by the size (projection amount) of the projecting piece, and the creeping distance can be secured in the horizontal direction.

本発明における請求項２の巻線構造では、前記突片が、別の巻装部に設けられた他の突片と重ならない位置に設けられている。 In the winding structure according to a second aspect of the present invention, the protruding piece is provided at a position that does not overlap with another protruding piece provided in another winding portion.

このようにすると、各突片が重ならず、これらの突片同士に対して垂直方向の沿面距離を確保することができる。 If it does in this way, each protrusion will not overlap and it can ensure the creeping distance of a perpendicular direction with respect to these protrusions.

本発明の請求項１によると、巻線間の絶縁距離を確保することができる巻線構造を提供することができる。 According to claim 1 of the present invention, it is possible to provide a winding structure capable of ensuring an insulation distance between the windings.

本発明の請求項２によると、隣接する巻線に設けられた各突片間の絶縁距離を確保することができる。 According to the second aspect of the present invention, it is possible to secure an insulation distance between the projecting pieces provided in adjacent windings.

以下、添付図面を参照しながら、本発明における巻線構造の好ましい各実施例を説明する。なお、同一箇所には同一符号を付し、共通する部分の説明は重複するため極力省略する。 Preferred embodiments of the winding structure according to the present invention will be described below with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the same location and description of a common part overlaps and it abbreviate | omits as much as possible.

図１は、本第１実施例におけるコイル巻線の組立前における形状を示した平面図である。 FIG. 1 is a plan view showing the shape of the coil winding before assembly in the first embodiment.

コイル巻線１は、例えば銅，真鍮などに代表される導電性を有する金属板から形成され、該金属板を打ち抜き（プレス）あるいはワイヤーカットなどの機械的加工を施すことにより、略環状の巻線板２，３と半弧状の半巻線板４とを連結した形状に形成して得られたものである。巻線板２，３及び半巻線板４が巻線体に相当する。本実施例では、コイル巻線１は、約１ターンの巻線に相当する２つの巻線板２，３と約半ターン（約０．５ターン）の巻線に相当する１つの半巻線板４とを連結しているため、コイル巻線１全体で約２．５ターンの巻線に相当することとなる。 The coil winding 1 is formed of a conductive metal plate represented by, for example, copper, brass, etc., and is subjected to mechanical processing such as punching (cutting) or wire cutting so as to form a substantially annular winding. This is obtained by connecting the wire plates 2 and 3 and the semi-arc-shaped half-winding plate 4 to each other. The winding plates 2 and 3 and the half winding plate 4 correspond to a winding body. In this embodiment, the coil winding 1 includes two winding plates 2 and 3 corresponding to a winding of about one turn and one half winding corresponding to a winding of about a half turn (about 0.5 turns). Since the plate 4 is connected, the coil winding 1 as a whole corresponds to a winding of about 2.5 turns.

巻線板２は、中央に貫通孔５が開口された略環状に形成された巻装部６を主要部とし、この巻装部６の一部に貫通孔５に連通する切り欠き７が巻装部６の中心から放射方向（図１中、右下方向）へ設けられることにより、巻装部６は対向する一対の端部を有する略Ｃ字状の不連続な環状となっている。当該一対の端部のうち、一方の端部には外方へ突出して半巻線板４との連結部８が設けられており、他方の端部は、外方へ若干延出した後に前記一方の端部の延長線方向へ延出してなる端子部９が設けられている。端子部９には、別のコイル巻線１又は他の回路部材と電気的接続するための、例えばネジなどの接続部材が挿通可能な接続孔10，10が開口形成されている。もちろん端子部９は例えば半田付けなどにより他の回路部材と電気的接続することもできる。また、貫通孔５の開口部である巻装部６の内周側には、突片としての２つのタブ11，11が対向して設けられる。 The winding plate 2 has a winding portion 6 formed in a substantially ring shape with a through hole 5 opened in the center as a main portion, and a cutout 7 communicating with the through hole 5 is wound around a part of the winding portion 6. By being provided in the radial direction from the center of the mounting part 6 (in the lower right direction in FIG. 1), the winding part 6 is a substantially C-shaped discontinuous ring having a pair of opposed end parts. Of the pair of end portions, one end portion projects outward and is provided with a connecting portion 8 with the half-winding plate 4, and the other end portion extends slightly outward after A terminal portion 9 is provided that extends in the extension line direction of one end portion. The terminal portion 9 is formed with connection holes 10 and 10 through which a connection member such as a screw can be inserted for electrical connection with another coil winding 1 or another circuit member. Of course, the terminal portion 9 can also be electrically connected to other circuit members by, for example, soldering. Further, two tabs 11, 11 as projecting pieces are provided facing each other on the inner peripheral side of the winding portion 6 that is an opening of the through hole 5.

巻線板３は、中央に貫通孔25が開口された略環状に形成された巻装部26を主要部とし、この巻装部26の一部に貫通孔25に連通する切り欠き27が巻装部26の中心から放射方向（図１中、左下方向）へ設けられることにより、巻装部26は対向する一対の端部を有する略Ｃ字状の不連続な環状となっている。当該一対の端部のうち、一方の端部には外方へ突出して半巻線板24との連結部28が設けられており、他方の端部は、外方へ若干延出した後に前記一方の端部の延長線方向へ延出してなる端子部29が設けられている。端子部29には、別のコイル巻線１又は他の回路部材と電気的接続するための、例えばネジなどの接続部材が挿通可能な接続孔30，30が開口形成されている。また、貫通孔25の開口部である巻装部26の内周側には、突片としての２つのタブ31，31が対向して設けられる。すなわち、巻線板３は、巻線板２の鏡面対称形状となる。 The winding plate 3 has a winding portion 26 formed in a substantially ring shape with a through hole 25 opened in the center as a main portion, and a cutout 27 communicating with the through hole 25 is wound around a part of the winding portion 26. By being provided in the radial direction (the lower left direction in FIG. 1) from the center of the mounting portion 26, the winding portion 26 has a substantially C-shaped discontinuous annular shape having a pair of opposed end portions. Of the pair of end portions, one end portion protrudes outwardly and is provided with a connecting portion 28 with the half-winding plate 24, and the other end portion is slightly extended outwardly after A terminal portion 29 extending in the direction of the extension line of one end portion is provided. The terminal portion 29 is formed with connection holes 30 and 30 through which a connection member such as a screw can be inserted to be electrically connected to another coil winding 1 or another circuit member. Further, two tabs 31, 31 as projecting pieces are provided facing each other on the inner peripheral side of the winding portion 26 that is an opening of the through hole 25. That is, the winding plate 3 has a mirror-symmetric shape of the winding plate 2.

半巻線板４は、略半弧状の半巻装部15が巻線板２の連結部８と巻線板３の連結部28との間に一体形成されてなる。半巻装部15の内周側には、突片としての２つのタブ16，16が対向して設けられる。このタブ16，16は、連結部８，28と結合する半巻装部15の内周側に設けられており、当該位置は、タブ16，16同士を結ぶ直線がタブ11，11又はタブ31，31同士を結ぶ直線に対して直交する位置となる。 The half-winding plate 4 has a substantially semi-arc-shaped half-winding portion 15 formed integrally between the connecting portion 8 of the winding plate 2 and the connecting portion 28 of the winding plate 3. Two tabs 16 and 16 as projecting pieces are provided on the inner peripheral side of the semi-winding portion 15 so as to face each other. The tabs 16 and 16 are provided on the inner peripheral side of the semi-winding portion 15 that is coupled to the connecting portions 8 and 28. The straight line connecting the tabs 16 and 16 is the tab 11 or 11 or the tab 31. , 31 are perpendicular to the straight line connecting the two.

巻線板２と半巻線板４とを連結する連結部８の中間位置には、マーク孔17，17が開口形成されており、マーク孔17，17を結ぶ線が連結部８の折り曲げ線を表す。同様に、巻線板３と半巻線板４とを連結する連結部28の中間位置には、折り曲げ線を表すマーク孔18，18が開口形成されている。そして、当該折り曲げ線で連結部８を山折り、連結部28を谷折りして、巻線板２と半巻線板４と巻線板３とを螺旋を構成するように重ね合せることにより、図２及び図３に示す巻線状態となる。このとき、巻線板２の巻装部６と、半巻線板４の半巻装部15と、巻線板３の巻装部26とは同軸円上で重なるが、これらに形成されたタブ11又はタブ31とタブ16とは重ならない。 Mark holes 17 and 17 are formed at intermediate positions of the connecting portion 8 that connects the winding plate 2 and the half-winding plate 4, and a line connecting the mark holes 17 and 17 is a folding line of the connecting portion 8. Represents. Similarly, mark holes 18 and 18 representing folding lines are formed at intermediate positions of the connecting portion 28 that connects the winding plate 3 and the half winding plate 4. Then, by folding the connecting portion 8 at the folding line, folding the connecting portion 28 at the valley, and superimposing the winding plate 2, the half winding plate 4 and the winding plate 3 so as to form a spiral, The winding state shown in FIGS. 2 and 3 is obtained. At this time, the winding portion 6 of the winding plate 2, the half winding portion 15 of the half winding plate 4, and the winding portion 26 of the winding plate 3 overlap on a coaxial circle, but are formed on these. Tab 11 or tab 31 and tab 16 do not overlap.

図４は、コイル巻線１を備えたチョークコイルの構造を示す分解斜視図である。同図において、チョークコイルは、コイル巻線１と、磁性材料を焼結してなる一対のＥ形コア40，40とから構成される。Ｅ形コア40，40は、扁平板状の主要部41に、円柱状の中央脚42を一側面の中央部に、外壁脚43，43を一側面の両端部にそれぞれ突設して形成される。コイル巻線１においては、巻線板２と半巻線板４との間、半巻線板４と巻線板３との間に、絶縁部材としての絶縁板45をそれぞれ配置して相互の絶縁を行う。絶縁板45は、巻線板２，３の巻装部６，26と略同程度の形状，大きさの環状であり、その内径は巻装部６，26に比べてタブ11，31の長さ分縮径されている。 FIG. 4 is an exploded perspective view showing the structure of the choke coil provided with the coil winding 1. In the figure, the choke coil is composed of a coil winding 1 and a pair of E-shaped cores 40, 40 formed by sintering a magnetic material. The E-shaped cores 40 and 40 are formed by projecting a flat plate-shaped main portion 41, a columnar central leg 42 at the center of one side, and outer wall legs 43 and 43 at both ends of the one side. The In the coil winding 1, an insulating plate 45 as an insulating member is disposed between the winding plate 2 and the half winding plate 4 and between the half winding plate 4 and the winding plate 3. Insulate. The insulating plate 45 has an annular shape that is substantially the same shape and size as the winding portions 6 and 26 of the winding plates 2 and 3, and the inner diameter thereof is longer than that of the winding portions 6 and 26. The diameter is reduced.

チョークコイルを組立てる手順としては、一次巻線１の上下に、絶縁板などを介して、複数の一次巻線１を絶縁状態で重ね合わせて、さらにその上下に例えば絶縁板45を配置する。絶縁材料を筒状に成形してなる絶縁筒46をＥ形コア40の中央脚42に被せる。同軸上に並べられた複数の一次巻線１を、Ｅ形コア40，40で挟み込むように、これらの貫通孔25へ、上下方向からＥ形コア40，40の中央脚42，42をそれぞれ挿入し、対向するＥ形コア40，40の中央脚42，42同士及び外壁脚43，43同士を突き合わせることにより図５に示す組立体となる。図５に示すチョークコイルは、端子部９に形成された接続孔10に挿通されたネジ50により他の回路部材としてのバスバー51に接続されている。 As a procedure for assembling the choke coil, a plurality of primary windings 1 are overlapped in an insulated state on the upper and lower sides of the primary winding 1 via insulating plates, and insulating plates 45 are disposed on the upper and lower sides thereof. An insulating cylinder 46 formed by forming an insulating material into a cylindrical shape is placed on the center leg 42 of the E-shaped core 40. The center legs 42 and 42 of the E-shaped cores 40 and 40 are inserted into the through holes 25 from above and below so that the plurality of primary windings 1 arranged on the same axis are sandwiched by the E-shaped cores 40 and 40, respectively. Then, the center legs 42, 42 of the opposing E-shaped cores 40, 40 and the outer wall legs 43, 43 are brought into contact with each other to obtain the assembly shown in FIG. The choke coil shown in FIG. 5 is connected to a bus bar 51 as another circuit member by a screw 50 inserted through a connection hole 10 formed in the terminal portion 9.

コイル巻線１の特徴的な構造は、巻線板２，３及び半巻線板４の内径の円周縁に、絶縁距離をキープするためのタブ11，16，31を角度を変えた位置に配置し、巻線板２，３及び半巻線板４と絶縁板45とを交互に積層することにある。コイル巻線１にＥ形コア40を装着した場合において、絶縁筒46で覆われた中央脚42の側周面にタブ11，16，31を突き当てることで、巻線板２，３及び半巻線板４におけるタブ11等以外の内径部分はタブ11等のサイズ（突出量）だけ距離が離れ、水平方向で沿面距離を確保することができる。また、積層の上下方向に関しては、タブ11，31とタブ16とが、その角度が異なる位置に配置されることから、上下のタブ位置は重ならず、これらのタブ同士に対して垂直方向の沿面距離を確保することができる。上下に隣接する巻線板２と半巻線板４、半巻線板４と巻線板３自体は、絶縁板45によりその間の絶縁は確保されているため、当該絶縁距離は沿面距離に等しくなる。すなわち、タブサイズの２倍の長さ（タブ11，16又はタブ16，31のそれぞれの突出量を加えた長さ）＋絶縁板45の厚さに相当する絶縁距離が確保される。よって、積層する絶縁板45の厚さに頼らずに、タブサイズにより絶縁距離を確保できる。 The characteristic structure of the coil winding 1 is that the tabs 11, 16, and 31 for keeping the insulation distance are arranged at different positions on the circumference of the inner diameter of the winding plates 2 and 3 and the half winding plate 4. In other words, the winding plates 2 and 3 and the half winding plate 4 and the insulating plate 45 are alternately laminated. When the E-shaped core 40 is mounted on the coil winding 1, the winding plates 2, 3, and half are formed by abutting the tabs 11, 16, 31 against the side peripheral surface of the central leg 42 covered with the insulating cylinder 46. The inner diameter portions other than the tabs 11 etc. in the winding plate 4 are separated by the size (projection amount) of the tabs 11 etc., and a creepage distance can be secured in the horizontal direction. Further, regarding the vertical direction of the stack, the tabs 11 and 31 and the tab 16 are arranged at different angles, so that the upper and lower tab positions do not overlap, and the tabs are perpendicular to each other. Creepage distance can be secured. Since the insulation between the winding plate 2 and the half winding plate 4 and the half winding plate 4 and the winding plate 3 themselves adjacent to each other is secured by the insulating plate 45, the insulation distance is equal to the creepage distance. Become. That is, an insulation distance corresponding to the length of twice the tab size (the length obtained by adding the protruding amount of each of the tabs 11 and 16 or the tabs 16 and 31) + the thickness of the insulating plate 45 is secured. Therefore, the insulation distance can be secured by the tab size without depending on the thickness of the insulating plate 45 to be laminated.

本第１実施例の変形例として、タブ11，16，31を巻装部６，26及び半巻装部15の外周側に設けてもよい。この場合、コイル巻線１にＥ形コア40を装着した場合において、外壁脚43の内側面にタブ11，16，31を絶縁状態で突き当てることで、巻線板２，３及び半巻線板４におけるタブ11等以外の外径部分はタブ11等のサイズ（突出量）だけ距離が離れ、水平方向で沿面距離を確保することができる。 As a modification of the first embodiment, the tabs 11, 16, 31 may be provided on the outer peripheral side of the winding parts 6, 26 and the semi-winding part 15. In this case, when the E-shaped core 40 is mounted on the coil winding 1, the winding plates 2, 3, and half winding are formed by abutting the tabs 11, 16, and 31 against the inner surface of the outer wall leg 43 in an insulated state. The outer diameter portions of the plate 4 other than the tabs 11 and the like are separated by the size (projection amount) of the tabs 11 and the like, and a creeping distance can be secured in the horizontal direction.

以上のように本第１実施例のコイル巻線１では、Ｅ形コア40に巻装される巻装部６，26及び半巻装部15を有する巻線体としての巻線板２，３及び半巻線板４と絶縁部材としての絶縁板45とを積層してなる巻線構造において、巻装部６，26及び半巻装部15にＥ形コア40に当接する突片としてのタブ11，16，31を設けている。 As described above, in the coil winding 1 of the first embodiment, the winding plates 2 and 3 as winding bodies having the winding portions 6 and 26 and the half winding portion 15 wound around the E-shaped core 40. In the winding structure in which the half-winding plate 4 and the insulating plate 45 as an insulating member are laminated, a tab as a projecting piece that abuts the E-shaped core 40 on the winding parts 6, 26 and the half-winding part 15 11, 16, 31 are provided.

このようにすると、Ｅ形コア40にタブ11，16，31を突き当てることで、巻線板２，３及び半巻線板４におけるタブ11，16，31以外の部分はタブ11，16，31のサイズ（突出量）だけ距離が離れ、水平方向で沿面距離を確保することができる。従って、巻線間の絶縁距離を確保することができる巻線構造を提供することができる。 In this way, the tabs 11, 16, 31 are abutted against the E-shaped core 40, so that portions other than the tabs 11, 16, 31 on the winding plates 2, 3 and the half winding plate 4 are tabs 11, 16, 31. The distance is 31 by the size (projection amount), and the creepage distance can be secured in the horizontal direction. Therefore, it is possible to provide a winding structure that can secure an insulation distance between the windings.

本発明における請求項２の巻線構造では、タブ11（タブ16，31）が、別の巻装部26（巻装部６）又は半巻装部15に設けられた他のタブ16又はタブ31（タブ11）と重ならない位置に設けられている。 In the winding structure according to claim 2 of the present invention, the tab 11 (tabs 16 and 31) is another tab 16 or tab provided in another winding part 26 (winding part 6) or half-winding part 15. It is provided at a position that does not overlap 31 (tab 11).

このようにすると、各タブ11，16，31が重ならず、これらのタブ11，16，31同士に対して垂直方向の沿面距離を確保することができる。従って、隣接する巻線板２，３及び半巻線板４に設けられた各タブ11，16，31間の絶縁距離を確保することができる。 If it does in this way, each tab 11,16,31 will not overlap, but the creeping distance of the orthogonal | vertical direction can be ensured with respect to these tabs 11,16,31. Therefore, it is possible to secure an insulation distance between the tabs 11, 16 and 31 provided on the adjacent winding plates 2 and 3 and the half winding plate 4.

図６は、本第２実施例におけるコイル巻線の組立前における形状を示した平面図である。 FIG. 6 is a plan view showing the shape of the coil winding before assembly in the second embodiment.

コイル巻線100は、第１実施例におけるコイル巻線１と基本的な構造を共通にするものであり、端的に言うと半巻線板４の数を増加したものである。コイル巻線１は、略環状の巻線板２，３と半弧状の半巻線板101，111，121とを連結した形状に形成して得られたものであり、本実施例では、コイル巻線100は、約１ターンの巻線に相当する２つの巻線板２，３と約半ターン（約０．５ターン）の巻線に相当する３つの半巻線板101，111，121とを連結しているため、コイル巻線100全体で約３．５ターンの巻線に相当することとなる。 The coil winding 100 has the same basic structure as that of the coil winding 1 in the first embodiment. In short, the number of the half-winding plates 4 is increased. The coil winding 1 is obtained by connecting the substantially annular winding plates 2 and 3 and the semi-arc-shaped half winding plates 101, 111, and 121. In this embodiment, the coil winding 1 The winding 100 includes two winding plates 2 and 3 corresponding to windings of about 1 turn and three half winding plates 101, 111 and 121 corresponding to windings of about half turns (about 0.5 turns). Therefore, the entire coil winding 100 corresponds to a winding of about 3.5 turns.

巻線板２は、第１実施例で説明したものと同様の構成であるが、本第２実施例ではタブ11の位置が９０°異なって設けられている。また、巻線板３も、第１実施例で説明したものと同様の構成である。 The winding plate 2 has the same configuration as that described in the first embodiment, but in the second embodiment, the positions of the tabs 11 are different by 90 °. Further, the winding plate 3 has the same configuration as that described in the first embodiment.

半巻線板101，111，121は、半巻線板４と同様の構成であり、半巻線板101の要部をなす略半弧状の半巻装部102と、半巻線板111の要部をなす略半弧状の半巻装部112と、半巻線板121の要部をなす略半弧状の半巻装部122とを、巻線板２と巻線板３との間に一体形成されてなる。巻線板２と半巻装部102とは連結部８で連結され、半巻装部102と半巻装部112とは連結部104で連結され、半巻装部112と半巻装部122とは連結部106で連結され、半巻装部122と巻線板３とは連結部28で連結される。半巻装部102の内周側には、突片としてのタブ103が設けられ、半巻装部112の内周側には、突片としてのタブ113が設けられ、半巻装部122の内周側には、突片としての２つのタブ123が対向して設けられる。 The half-winding plates 101, 111, and 121 have the same configuration as the half-winding plate 4, and a substantially semi-arc-shaped half-winding portion 102 that forms a main part of the half-winding plate 101 and the half-winding plate 111. Between the winding plate 2 and the winding plate 3, a substantially semi-arc-shaped half-winding portion 112 that forms a main part and a substantially semi-arc-shaped half-winding portion 122 that forms a main portion of the half-winding plate 121. It is integrally formed. Winding plate 2 and half-winding portion 102 are connected by connecting portion 8, half-winding portion 102 and half-winding portion 112 are connected by connecting portion 104, and half-winding portion 112 and half-winding portion 122 are connected. Are connected by a connecting portion 106, and the semi-winding portion 122 and the winding plate 3 are connected by a connecting portion 28. A tab 103 as a protruding piece is provided on the inner peripheral side of the semi-winding portion 102, and a tab 113 as a protruding piece is provided on the inner peripheral side of the semi-winding portion 112. On the inner peripheral side, two tabs 123 as protruding pieces are provided to face each other.

連結部104，106の中間位置には、マーク孔105，105とマーク孔107，107がそれぞれ開口形成されており、マーク孔105，105又はマーク孔107，107を結ぶ線がそれぞれの連結部104，106についての折り曲げ線を表す。そして、当該折り曲げ線で連結部８を山折り、連結部104を谷折り、連結部106を山折り、連結部28を谷折りして、巻線板２と半巻線板101，111，121と巻線板３とを螺旋を構成するように重ね合せることにより、図７に示す巻線状態となる。このとき、巻線板２の巻装部６と、半巻線板101の半巻装部102と、半巻線板111の半巻装部112と、半巻線板121の半巻装部122と、巻線板３の巻装部26とは同軸円上で重なるが、これらに形成されたタブ11，31，103，113，123とは重ならない位置に設けられている。但し、図６及び図７に示すものでは、タブ11とタブ123とは重なる位置に設けられている。 Mark holes 105, 105 and mark holes 107, 107 are formed at intermediate positions between the connecting portions 104, 106, respectively, and a line connecting the mark holes 105, 105 or the mark holes 107, 107 is connected to each connecting portion 104. , 106 represents the fold line. Then, the connecting portion 8 is folded at the folding line, the connecting portion 104 is folded, the connecting portion 106 is folded, the connecting portion 28 is folded, and the winding plate 2 and the half-winding plates 101, 111, 121 are folded. 7 and the winding plate 3 are superposed so as to form a spiral, the winding state shown in FIG. 7 is obtained. At this time, the winding portion 6 of the winding plate 2, the half winding portion 102 of the half winding plate 101, the half winding portion 112 of the half winding plate 111, and the half winding portion of the half winding plate 121. 122 and the winding portion 26 of the winding plate 3 overlap each other on a coaxial circle, but are provided at positions where they do not overlap with the tabs 11, 31, 103, 113, and 123 formed thereon. However, in the case shown in FIGS. 6 and 7, the tab 11 and the tab 123 are provided at the overlapping positions.

以上のように本第２実施例では、Ｅ形コア40に巻装される巻装部６，26及び半巻装部102，112，122を有する巻線体としての巻線板２，３及び半巻線板101，111，121と絶縁部材としての絶縁板45とを積層してなる巻線構造において、コイル巻線100における１ターンの一部を構成する半巻装部102，112，122を有する複数の半巻線板101，111，121が積層連結して構成されている。 As described above, in the second embodiment, the winding plates 2, 3 as winding bodies having the winding portions 6, 26 wound around the E-shaped core 40 and the half winding portions 102, 112, 122, and In a winding structure formed by laminating half-winding plates 101, 111, 121 and an insulating plate 45 as an insulating member, half-winding portions 102, 112, 122 that constitute a part of one turn in the coil winding 100 A plurality of half-winding plates 101, 111, and 121 having stacked layers are connected in a stacked manner.

なお、本発明は、上記実施例に限定されるものではなく、本発明の趣旨を逸脱しない範囲で変更可能である。本発明における巻線構造は、トランス等の巻線を備えるあらゆるインダクタンス素子に適用可能であることは言うまでもない。突片の形状，数，位置，大きさなどは適宜設計すればよい。 In addition, this invention is not limited to the said Example, It can change in the range which does not deviate from the meaning of this invention. It goes without saying that the winding structure in the present invention is applicable to any inductance element having a winding such as a transformer. The shape, number, position, size, etc. of the projecting pieces may be designed as appropriate.

本発明の第１実施例における巻線構造を有するコイル巻線の組立前の状態を示す平面図である。It is a top view which shows the state before the assembly of the coil winding which has a winding structure in 1st Example of this invention. 同上、コイル巻線の組立後の状態を示す平面図である。It is a top view which shows the state after an assembly of a coil winding same as the above. 同上、コイル巻線の組立後の状態を示す斜視図である。It is a perspective view which shows the state after an assembly of a coil winding same as the above. 同上、コイル巻線を備えたチョークコイルの構造を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the choke coil provided with the coil winding same as the above. 同上、コイル巻線を備えたチョークコイルを示す斜視図である。It is a perspective view which shows a choke coil provided with coil winding same as the above. 本発明の第２実施例における巻線構造を有するコイル巻線の組立前の状態を示す平面図である。It is a top view which shows the state before the assembly of the coil winding which has a winding structure in 2nd Example of this invention. 同上、コイル巻線の組立後の状態を示す斜視図である。It is a perspective view which shows the state after an assembly of a coil winding same as the above.

符号の説明Explanation of symbols

１コイル巻線
２，３巻線板（巻線体）
４半巻線板（巻線体）
６，26 巻装部
15 半巻装部
11，16，31 タブ（突片）
40 Ｅ形コア
1 Coil winding 2, 3 Winding plate (winding body)
4 Half-winding plate (winding body)
6,26 Winding part
15 Half-winding part
11, 16, 31 tab (projection)
40 E core

Claims

コアに巻装される巻装部を有する巻線体と絶縁部材とを積層してなる巻線構造において、前記巻装部に前記コアに当接する突片を設けたことを特徴とする巻線構造。 A winding structure in which a winding body having a winding portion wound around a core and an insulating member are laminated, and the winding portion is provided with a projecting piece that contacts the core. Construction.

前記突片が、別の巻装部に設けられた他の突片と重ならない位置に設けられたことを特徴とする請求項１記載の巻線構造。
The winding structure according to claim 1, wherein the projecting piece is provided at a position that does not overlap with another projecting piece provided in another winding part.