JPH0799120A - Surface-mounting coil - Google Patents
Surface-mounting coilInfo
- Publication number
- JPH0799120A JPH0799120A JP24133093A JP24133093A JPH0799120A JP H0799120 A JPH0799120 A JP H0799120A JP 24133093 A JP24133093 A JP 24133093A JP 24133093 A JP24133093 A JP 24133093A JP H0799120 A JPH0799120 A JP H0799120A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic core
- coil
- cover
- shaped magnetic
- mounting
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、巻枠本体両端に嵌装枠
を有するコイルボビンに中央磁脚及び側磁脚を構成する
磁心を組合わせることにより閉磁路が構成される面実装
型コイルに関し、さらに詳細には、平坦なカバーをコイ
ル上面に覆うように装着させ、自動実装時のマウント吸
着を可能にする低背の面実装型コイルの構造に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface-mounted coil in which a closed magnetic circuit is constructed by combining a coil bobbin having fitting frames at both ends of a winding frame body with magnetic cores constituting a central magnetic leg and side magnetic legs. More specifically, the present invention relates to a structure of a low-profile surface-mounted coil that is mounted so as to cover a coil upper surface with a flat cover and enables mount adsorption during automatic mounting.
【０００２】[0002]
【従来の技術】近年の電子機器の軽薄短小化に伴い、個
々の電子部品においても薄型化（低背化）が求められて
おり、特にコイル（トランス、チョークコイル及びノイ
ズフィルタ等も含む）は大容量化、低背化の要請が強
い。2. Description of the Related Art As electronic devices have become lighter, thinner, shorter, and smaller in recent years, individual electronic parts are required to be thinner (lower in height). In particular, coils (including transformers, choke coils, noise filters, etc.) There is a strong demand for large capacity and low profile.
【０００３】一般に、コイルは、巻線が一次側と二次側
等に分巻されるとともに、該巻線部に磁心による閉磁路
が形成されることにより、前記一次側と二次側とにおい
て該巻数比に相応した電磁エネルギを媒介することによ
り、電圧を昇圧したり、または電流の増減等の回路機能
を発現するように構成されており、元々低背化の難しい
電子部品ではある。Generally, in a coil, a winding is divided into a primary side and a secondary side, and a closed magnetic path is formed by a magnetic core in the winding part, so that the primary side and the secondary side are formed. It is configured so as to exhibit a circuit function such as boosting voltage or increasing / decreasing current by mediating electromagnetic energy corresponding to the turns ratio, and it is an electronic component whose height is originally difficult to reduce.
【０００４】しかしながら、面実装に適した入出力端子
を備えた低背の非磁性コイルボビンに巻線を捲回した
後、磁心を組み合わせるタイプの面実装型コイルが前記
低背化の要請に応えるものとして現在の主流になってい
る。However, a surface-mounting type coil, in which a winding is wound around a low-height non-magnetic coil bobbin having input / output terminals suitable for surface-mounting, and then a magnetic core is combined, meets the above-mentioned demand for lowering the height. Has become the current mainstream.
【０００５】上記従来の面実装型コイルの構造例を図４
〜図５を用いて詳述する。An example of the structure of the above conventional surface mount type coil is shown in FIG.
~ It will be described in detail with reference to FIG.
【０００６】図４において、従来の面実装型コイルに使
用される低背コイルボビン１は、非磁性材料である合成
樹脂（エポキシ樹脂、フェノール樹脂等）を金型等によ
り成形加工することにより形成されている。即ち、四角
柱形状を有する巻枠本体２の外周部には、エナメル線等
の巻線が捲回される巻線部４が設けられており、また内
部には、例えばＥ形形状を有する磁心の中央磁脚が嵌挿
される嵌挿孔３が貫通形成されている。In FIG. 4, a low profile coil bobbin 1 used in a conventional surface mount coil is formed by molding a synthetic resin (epoxy resin, phenol resin, etc.), which is a non-magnetic material, with a mold or the like. ing. That is, a winding portion 4 around which a winding wire such as an enamel wire is wound is provided on the outer peripheral portion of the winding frame body 2 having a quadrangular prism shape, and a magnetic core having, for example, an E shape is provided inside. The insertion hole 3 into which the central magnetic leg is inserted is formed.
【０００７】前記巻枠本体２の図中手前端並びに後方端
には、それぞれ第一嵌装枠５及び第二嵌装枠６が該巻枠
本体２を挟装するように設けられており、然るに前記巻
枠本体２、第一嵌装枠５及び第二嵌装枠６より略糸巻形
状を形成している。A first fitting frame 5 and a second fitting frame 6 are provided at the front end and the rear end of the winding frame main body 2 so as to sandwich the winding frame main body 2, respectively. Therefore, the bobbin main body 2, the first fitting frame 5 and the second fitting frame 6 form a substantially bobbin shape.
【０００８】この際、前記嵌挿孔３は、例えばコイルボ
ビン１が一体成型されることより、第一嵌装枠５及び第
二嵌装枠６にも開口形成される。At this time, the fitting insertion hole 3 is also formed in the first fitting frame 5 and the second fitting frame 6 by integrally molding the coil bobbin 1, for example.
【０００９】更に、前記第一嵌装枠５及び第二嵌装枠６
には、手前側に第一基台７が、また後方側に第二基台８
がそれぞれ延設されており、第一基台７の嵌挿孔方向の
側面９には、嵌挿孔３に平行な位置で該側面に直角に入
出力端子１１が突設されている。Further, the first fitting frame 5 and the second fitting frame 6 are
Has a first base 7 on the front side and a second base 8 on the rear side.
Are extended respectively, and an input / output terminal 11 is provided on a side surface 9 of the first base 7 in the fitting insertion hole direction at a position parallel to the fitting insertion hole 3 and at a right angle to the side surface.
【００１０】また、上記入出力端子１１は、からげ処理
部より先端部分をコイルボビン底面の位置までＳ字状に
折曲させて、実装時に実装基板と接触するように成形さ
れる。Further, the input / output terminal 11 is formed so that its tip end portion is bent in an S shape from the twisting portion to the position of the bottom surface of the coil bobbin so as to come into contact with the mounting board during mounting.
【００１１】第二基台８の後方側面１０においても同様
にして入出力端子１３が突設され、からげ処理部より先
端部分を折曲成形した構造となっている。Similarly, an input / output terminal 13 is also provided on the rear side surface 10 of the second base 8 so that the tip portion is bent and formed from the twisting portion.
【００１２】次に、図５において、従来の面実装型コイ
ル２０は前記コイルボビン１に巻線２６を捲回して入出
力端子１１にからげた後、Ｅ形磁心２１の中央磁脚２２
を前記嵌装孔３に嵌装して側磁脚２３、２４及びＩ形磁
心２５とともに閉磁路を形成している。さらに上記Ｅ形
磁心とＩ形磁心を固定するために接続部分に接着剤２８
を塗布するか、または磁心の周囲にテープを巻いていた
（図示略）。Next, referring to FIG. 5, in the conventional surface mount coil 20, after winding the coil 26 around the coil bobbin 1 and twisting it around the input / output terminal 11, the central magnetic leg 22 of the E-shaped magnetic core 21 is shown.
Is fitted into the fitting hole 3 to form a closed magnetic path together with the side magnetic legs 23 and 24 and the I-shaped magnetic core 25. Further, in order to fix the E-shaped core and the I-shaped core, an adhesive 28 is attached to the connecting portion.
Or a tape was wrapped around the magnetic core (not shown).
【００１３】なお、上記従来のコイル構造においては一
般に、捲回された巻線部４は剥きだし、またはビニルテ
ープにて１〜２回巻いた状態のままである。In the above conventional coil structure, generally, the wound winding portion 4 is left bare or wound with vinyl tape once or twice.
【００１４】この点、上記従来の面実装型コイル２０の
構造では、本面実装型コイル等を搭載対象とする自動部
品搭載装置の吸着部によってマウント吸着を行おうとし
た場合に、巻線断面が円形なことから巻線が捲回された
巻枠本体上部が平坦でない。In this respect, in the structure of the conventional surface mount type coil 20 described above, when an attempt is made to perform mount suction by the suction part of the automatic component mounting apparatus in which the main surface mount type coil or the like is mounted, the winding cross section is Since it is circular, the upper part of the winding frame main body around which the winding is wound is not flat.
【００１５】このためマウント吸着が困難であるととも
に、該巻線部を損傷する恐れがあるので、自動部品搭載
装置による電子回路基板等への自動実装には不向きであ
った。For this reason, it is difficult to attract the mount, and the winding portion may be damaged. Therefore, it is not suitable for automatic mounting on an electronic circuit board or the like by an automatic component mounting apparatus.
【００１６】また、外部環境等から何等の電気的絶縁及
び機械的保護が施されておらず、従って該巻線部の損傷
によって、該コイル機能に物理的損害を被るか、或いは
他の電子部品との電気的短絡を発生する恐れがあった。Further, no electrical insulation or mechanical protection is provided from the external environment, etc. Therefore, the coil function is physically damaged due to the damage of the winding part, or other electronic parts. There was a risk that an electrical short circuit with
【００１７】そこで従来の面実装型コイル、特に高電圧
を発生するコイルにおいては、上記実装方法、使用形態
に鑑みて、自動実装化及び信頼性向上のため、図６のよ
うな巻線部の電気的絶縁が確保されるように巻線部及び
その周囲を覆うような合成樹脂製のカバー２９を巻線が
捲回されたコイルボビン１に装着してから、磁心（側磁
脚２３、２４と中央磁脚２２を有するＥ形磁心２１とＩ
形磁心２５）を嵌装した図７に示されるような構造の面
実装型コイル３０が考案されている。Therefore, in the conventional surface mount type coil, especially in the coil which generates a high voltage, in view of the above mounting method and usage form, in order to realize automatic mounting and reliability improvement, a winding portion as shown in FIG. A synthetic resin cover 29 that covers the winding portion and its periphery so as to ensure electrical insulation is attached to the coil bobbin 1 around which the winding is wound, and then the magnetic core (side magnetic legs 23, 24 E-shaped magnetic core 21 and I having a central magnetic leg 22
A surface mount coil 30 having a structure as shown in FIG. 7 in which a shaped magnetic core 25) is fitted has been devised.
【００１８】[0018]
【発明が解決しようとする課題】一般に、電子部品は電
子基板等の実装基板への自動実装化が進んでおり、コイ
ル等を搭載対象とする自動部品搭載装置は吸引ノズルに
よってノズル先端に当該面実装型コイルを吸着して（マ
ウント吸着と称される。）所定の位置に移動させるので
あるが、従来の巻枠本体上部が平坦でない面実装型コイ
ルでは前述のように吸着力が弱くなって、脱落しやす
い。そのため、従来はリフロー半田時にも所謂手のせマ
ウントを余儀なくされ、他の部品に比べて実装時間が長
くなるという問題点があった。Generally, electronic components are being automatically mounted on a mounting substrate such as an electronic substrate, and an automatic component mounting apparatus in which a coil or the like is mounted is attached to a nozzle tip by a suction nozzle. The mounting type coil is sucked (referred to as mount suction) and moved to a predetermined position. However, in the conventional surface mounting type coil in which the upper part of the bobbin main body is not flat, the suction force becomes weak as described above. , Easy to fall off. Therefore, conventionally, there is a problem in that a so-called hand mount is unavoidable even during reflow soldering, which results in a longer mounting time than other components.
【００１９】また、磁心の固定のための接着剤の塗布な
いしテープの巻き付けが必要な点は従来の面実装コイル
にとっては不可避的な作業であった。Further, the fact that the application of an adhesive or the winding of a tape for fixing the magnetic core is required is an unavoidable task for the conventional surface mount coil.
【００２０】一方、前述の図７の如く巻線部及びその周
囲を覆うような合成樹脂製のカバー２９を巻線が捲回さ
れたコイルボビン１に装着してから、磁心２１、２５を
嵌装してなる構造の面実装型コイル３０は、基台部分に
も合成樹脂製のカバー２９の部分が延設されているの
で、該厚さ分だけ面実装型コイル全体の高さが増すこと
になってしまい低背化に反するという問題点があった。On the other hand, as shown in FIG. 7, the cover 29 made of synthetic resin for covering the winding portion and its surroundings is attached to the coil bobbin 1 around which the winding is wound, and then the magnetic cores 21 and 25 are fitted. In the surface mount coil 30 having the structure described above, since the cover 29 made of synthetic resin is extended to the base part, the height of the entire surface mount coil is increased by the thickness. However, there is a problem that it is against the height reduction.
【００２１】さらに、前記合成樹脂製のカバー２９は磁
心のコイルボビン１への嵌装する前に装着しなければな
らず、従来の面実装型コイルの組立工程の途中に該カバ
ー装着工程を追加しなければならず、組立ラインの変更
が必要である。Further, the cover 29 made of synthetic resin must be attached before fitting the magnetic core to the coil bobbin 1, and the cover attaching step is added in the middle of the assembly process of the conventional surface mount type coil. It is necessary to change the assembly line.
【００２２】本発明は、上記事情に鑑みてなされたもの
であり、非磁性材料を成形してなるマウント吸着用カバ
ーを組立完成後のコイル上面に係止機構によって簡単に
装着させることにより、面実装型コイルの自動実装化
（自動マウント吸着）を実現した面実装型コイルを提供
するものである。The present invention has been made in view of the above circumstances, and a mount suction cover formed by molding a non-magnetic material is simply attached to the upper surface of the assembled coil by a locking mechanism to provide a surface. It is intended to provide a surface mount type coil which realizes automatic mounting of a mount type coil (automatic mount suction).
【００２３】[0023]
【課題を解決するための手段】本発明は、内側に磁心が
嵌挿される嵌挿孔が形成されるとともに外側に巻線が捲
回される巻枠本体と、該巻枠本体を両端にて狭装する嵌
装枠と、前記両端の嵌装枠を支持するとともにそれぞれ
入出力端子が設けられた基台と、を有する低背コイルボ
ビンに巻線を施し、磁性材料からなる中央磁脚とその両
側に配した側磁脚から構成されるＥ形磁心と、Ｉ形磁心
と、を組合わせることにより日形閉磁路が構成される面
実装型コイルにおいて、（１）前記低背コイルボビンの
Ｉ形磁心が配設される側の基台側面に第一の係止部を有
するとともに前記Ｉ形磁心を支持する壁部が立設され、
さらにコイル上面を覆う平坦な覆平面部と、該覆平面部
の前記壁部に沿う縁から実装面側に垂直に延設されると
ともに前記第一の係止部と掛合する第二の係止部を配設
した第一側面と、前記覆平面部のＥ形磁心渡り部側に沿
う縁から実装面側に垂直に延設されるとともに前記Ｅ形
磁心の基台側縁部と掛合する第三の係止部を有する第二
側面とを有し、非磁性材料を成形してなるマウント吸着
用カバーをコイル上面に覆うように装着したことを特徴
とする面実装型コイルを提供することにより、（２）前
記Ｉ形磁心の実装面に垂直な外側の長手面に第一の係止
部を刻設するとともに、コイル上面を覆う平坦な覆平面
部と、該覆平面部のＩ形磁心に沿う縁から実装面側に垂
直に延設されるとともに前記第一の係止部と掛合する第
二の係止部を配設した第一側面と、前記覆平面部のＥ形
磁心渡り部側に沿う縁から実装面側に垂直に延設される
とともに前記Ｅ形磁心の基台側縁部と掛合する第三の係
止部を有する第二側面とを有し、非磁性材料を成形して
なるマウント吸着用カバーをコイル上面に覆うように装
着したことを特徴とする面実装型コイルを提供すること
により、上記目的を達成するものである。According to the present invention, there is provided a winding frame main body in which a fitting insertion hole for inserting a magnetic core is formed, and a winding is wound outside, and a winding frame main body at both ends. A low-profile coil bobbin having a fitting frame to be narrowed and a base supporting the fitting frames at both ends and having input / output terminals respectively provided with a winding, and a central magnetic leg made of a magnetic material and the same. A surface mount coil in which a day-shaped closed magnetic circuit is formed by combining an E-shaped magnetic core composed of side magnetic legs arranged on both sides and an I-shaped magnetic core, wherein: (1) I-shape of the low profile coil bobbin A wall portion that has a first locking portion and that supports the I-shaped magnetic core is provided upright on the side surface of the base on the side where the magnetic core is disposed;
Further, a flat covering flat surface portion that covers the coil upper surface, and a second locking portion that extends vertically from the edge of the covering flat surface portion along the wall portion to the mounting surface side and that engages with the first locking portion. A first side surface on which the portion is disposed, and a portion extending vertically from the edge of the covering flat surface portion along the E-shaped magnetic core crossing portion side to the mounting surface side and engaging with the base side edge portion of the E-shaped magnetic core. By providing a surface mount type coil having a second side surface having three locking portions and mounting a mount suction cover formed of a non-magnetic material so as to cover the upper surface of the coil. (2) A first locking portion is engraved on an outer longitudinal surface perpendicular to the mounting surface of the I-shaped magnetic core, and a flat covering flat surface portion that covers the coil upper surface and an I-shaped magnetic core of the covering flat surface portion are provided. A second locking portion that extends vertically from the edge along the mounting surface side and that engages with the first locking portion is provided. A first side surface, and a third lock extending vertically from the edge of the covering flat surface portion along the E-shaped magnetic core crossing portion side to the mounting surface side and engaging with the base side edge portion of the E-shaped magnetic core. And a second side surface having a portion, and a mount mounting cover formed by molding a non-magnetic material is mounted so as to cover the upper surface of the coil. To achieve.
【００２４】[0024]
【作用】本発明においては、平坦な覆平面部を有するマ
ウント吸着用カバーが、巻線が捲回された巻枠本体上部
を覆っているので、自動部品搭載装置の吸引ノズル先端
は当該面実装型コイルの前記カバーの平坦部にエアーの
漏れがなく吸着し、マウント吸着が確実となる。In the present invention, since the mount suction cover having the flat covering flat surface covers the upper part of the winding frame main body around which the winding is wound, the suction nozzle tip of the automatic component mounting apparatus is surface-mounted. Air is adsorbed onto the flat portion of the cover of the die coil without leakage, and the mount is adsorbed securely.
【００２５】また、前記マウント吸着用カバーに配設さ
れた第二、第三の係止部と低背コイルボビンの壁部ない
しＩ形磁心に配設された第一の係止部とによって構成さ
れる係止機構とマウント吸着用カバー自身の弾性によっ
て、前記マウント吸着用カバーは完成後のコイルに簡単
に係止装着することができる。Further, it is constituted by the second and third locking portions arranged on the mount suction cover and the first locking portion arranged on the wall portion of the low-height coil bobbin or the I-shaped magnetic core. Due to the locking mechanism and the elasticity of the mount suction cover itself, the mount suction cover can be easily locked and attached to the completed coil.
【００２６】また同時に上記係止機構によってＥ形磁心
とＩ形磁心は互いにマウント吸着用カバーで付勢圧着さ
れることになる。At the same time, the locking mechanism causes the E-shaped magnetic core and the I-shaped magnetic core to be pressed and pressed against each other by the mount suction cover.
【００２７】したがって従来要した磁心固定のための接
着剤の接続部への塗布ないしテープの巻き付けの作業が
不要となる。Therefore, it is not necessary to apply the adhesive to the connecting portion or wind the tape for fixing the magnetic core, which is conventionally required.
【００２８】[0028]
【実施例】本発明に係わる実施例を図面に基いて詳細に
説明する。尚、前述の従来例と同等部位については同符
合にて表記する。Embodiments of the present invention will be described in detail with reference to the drawings. Incidentally, the same parts as those of the above-mentioned conventional example are denoted by the same reference numerals.
【００２９】図１は本発明の請求項１に係わる面実装型
コイルの構成を説明するための斜視図であり、図２はマ
ウント吸着用カバーを装着した状態の完成後の図１にお
けるＡーＢ線の断面図である。また、図３は請求項２に
係わる面実装型コイルの構成を説明するための斜視図で
ある。FIG. 1 is a perspective view for explaining the structure of a surface mounting type coil according to claim 1 of the present invention, and FIG. 2 is A- in FIG. 1 after completion of a state where a mount suction cover is attached. It is sectional drawing of a B line. FIG. 3 is a perspective view for explaining the structure of the surface mount coil according to the second aspect.
【００３０】本実施例において使用される低背コイルボ
ビン１８は図４の低背コイルボビン１と同様であるが、
唯、図１に示されるように、Ｉ形磁心が配設される側の
基台側面に第一の係止部１４を有するとともに前記Ｉ形
磁心２５を支持する壁部１５が立設されていることに特
徴がある。The low profile coil bobbin 18 used in this embodiment is the same as the low profile coil bobbin 1 of FIG.
However, as shown in FIG. 1, the first locking portion 14 is provided on the side surface of the base on the side where the I-shaped magnetic core is disposed, and the wall portion 15 that supports the I-shaped magnetic core 25 is provided upright. It is characterized by being
【００３１】本面実装型コイル４０は、上記低背コイル
ボビン１８に図１のように巻線２６を施し、磁性材料か
らなる中央磁脚２２及び側磁脚２３、２４を構成するＥ
形磁心２１の中央磁脚２２を第二基台８側から嵌挿孔３
に嵌挿して両側の側磁脚２３、２４共々第一基台７に載
置されたＩ形磁心と物理的に接合することにより日形閉
磁路が構成され、さらにコイル上面を覆う平坦な覆平面
部３２と、該覆平面部３２の前記壁部１５に沿う縁から
実装面側に垂直に延設されるとともに前記第一の係止部
１４と掛合する第二の係止部１６を配設した第一側面３
３と、前記覆平面部３２のＥ形磁心渡り部側に沿う縁か
ら実装面側に垂直に延設されるとともに前記Ｅ形磁心の
基台側縁部１７と掛合する第三の係止部１９を有する第
二側面３４とを有し、非磁性材料を成形してなるマウン
ト吸着用カバー３５をコイル上面に覆うように装着した
構成となっている。In the surface-mounted coil 40, a winding 26 is formed on the low-profile coil bobbin 18 as shown in FIG. 1 to form a central magnetic leg 22 and side magnetic legs 23 and 24 made of a magnetic material.
The central magnetic leg 22 of the shaped magnetic core 21 is fitted into the second base 8 side through the insertion hole 3
A day-shaped closed magnetic circuit is formed by physically inserting the side magnetic legs 23 and 24 on both sides into the I-shaped magnetic core placed on the first base 7, and a flat cover for covering the upper surface of the coil. A flat portion 32 and a second locking portion 16 extending vertically from the edge of the covering flat portion 32 along the wall portion 15 to the mounting surface side and engaging with the first locking portion 14 are arranged. First side 3
3 and a third locking portion extending vertically from the edge of the covering flat surface portion 32 along the E-shaped magnetic core crossing portion side to the mounting surface side and engaging with the base side edge portion 17 of the E-shaped magnetic core. And a second side surface 34 having 19 and a mount suction cover 35 formed by molding a non-magnetic material so as to cover the upper surface of the coil.
【００３２】上記コイルボビン１８は、フェノール樹
脂、ポリエチレンテレフタレート、ポリブチレンテレフ
タレート等の合成樹脂を材料としており、該合成樹脂を
金型等により成型加工することにより一体形成され、第
一基台７、第二基台８の底面には巻枠本体２とリード端
子１１、１３間に巻線を導出する切り込み溝３６が各入
出力端子間に配設されている。The coil bobbin 18 is made of a synthetic resin such as phenol resin, polyethylene terephthalate or polybutylene terephthalate, and is integrally formed by molding the synthetic resin with a die or the like. On the bottom surface of the two bases 8, cut grooves 36 for leading the winding between the winding body 2 and the lead terminals 11 and 13 are arranged between the input and output terminals.
【００３３】次に、磁心の材料はフェライト、珪素鋼
板、パーマロイ、圧粉磁心等の磁性材料が考えられる
が、通常は加工の容易さ、価格の点でフェライト（ニッ
ケルフェライト、マンガン亜鉛フェライト等）が適当で
ある。Next, magnetic materials such as ferrite, silicon steel plate, permalloy, dust core, etc. can be considered as the material of the magnetic core, but usually ferrite (nickel ferrite, manganese zinc ferrite, etc.) in view of easy processing and price. Is appropriate.
【００３４】また、マウント吸着用カバー３５は非磁性
材料の他は特に材質の指定はないが、通常は前記合成樹
脂またはアルミ合金等の金属製が適当であろう。また、
マウント吸着用カバー３５の幅寸法Ｗはマウント吸着面
として広い方が有利であるから、コイルの幅寸法、即ち
Ｉ形磁心の長手寸法と同等とするのが望ましい。The mount suction cover 35 is not particularly specified as to the material other than the non-magnetic material, but usually a synthetic resin or a metal such as an aluminum alloy will be suitable. Also,
Since it is advantageous that the width W of the mount suction cover 35 is large as a mount suction surface, it is desirable to make it equal to the width of the coil, that is, the longitudinal length of the I-shaped magnetic core.
【００３５】上記マウント吸着カバー３５の厚さｄはマ
ウント吸着の際の吸着力で変形せず吸着状態に不具合が
生じない程度の強度を有していればよく、使用する材料
によっては極めて薄くすることも可能であろう。合成樹
脂製、金属製何れも０．２〜０．５ｍｍ程度で充分と思
われる。The thickness d of the mount suction cover 35 need only be strong enough not to be deformed by the suction force at the time of mounting the mount and cause no trouble in the suction state, and it may be made extremely thin depending on the material used. It would be possible. It seems that about 0.2 to 0.5 mm is sufficient for both synthetic resin and metal.
【００３６】次に、マウント吸着用カバー３５のコイル
への装着については、前記第一の係止部〜第三の係止部
からなる係止機構によって成される。Next, the mounting of the mount suction cover 35 on the coil is performed by a locking mechanism including the first locking portion to the third locking portion.
【００３７】先ず、Ｉ形磁心が配設される側の基台（第
一基台７）側面に立設された壁部１５に配設された第一
の係止部１４は該壁部１５外側に実装面と平行に走る断
面が略半円形の凹溝である。First, the first locking portion 14 provided on the wall portion 15 erected on the side surface of the base (first base 7) on the side where the I-shaped magnetic core is arranged has the wall 15 A cross section that runs outward and parallel to the mounting surface is a substantially semicircular groove.
【００３８】また、マウント吸着用カバー３５の第一側
面３３に配設された第二の係止部１６は前記第一の係止
部である断面が半円形の凹溝と掛合するような同じく断
面が半円形の突起が第一側面３３の内側に壁部１５に沿
う縁２７と平行に連設されているものである。Further, the second locking portion 16 arranged on the first side surface 33 of the mount suction cover 35 is the same as the second locking portion 16 which engages with the groove having a semicircular cross section which is the first locking portion. A projection having a semicircular cross section is continuously provided inside the first side surface 33 in parallel with the edge 27 along the wall portion 15.
【００３９】さらに、マウント吸着用カバー３５の第二
側面３４に配設された第三の係止部１９はＥ形磁心２１
の第二基台８と接する基台側縁部１７の角隅下部３７に
当たって掛合するような矩形状の突起である。Further, the third engaging portion 19 arranged on the second side surface 34 of the mount suction cover 35 is an E-shaped magnetic core 21.
It is a rectangular protrusion that abuts against and engages with the lower corner portion 37 of the base-side edge portion 17 in contact with the second base 8.
【００４０】上記係止機構によってマウント吸着用カバ
ー３５を装着するには、先ず第三の係止部１９をＥ形磁
心２１の角隅下部３７に掛合させて、該掛合カ所を支点
としてマウント吸着用カバー３５の第一側面３３を低背
コイルボビン１８の壁部１５の外側に圧入する。この
際、合成樹脂ないし金属自身の有する弾性によって第二
の係止部（突起）１６は壁部外面に付勢されつつ第一の
係止部（凹溝）１４に嵌入して係止される。尚、上記装
着は組立完成後のコイルに簡単に施すことができること
は勿論である。In order to mount the mount suction cover 35 by the above locking mechanism, first, the third locking portion 19 is engaged with the lower corner portion 37 of the E-shaped magnetic core 21, and the mount adsorption is performed with the engaging point as a fulcrum. The first side surface 33 of the cover 35 is press-fitted to the outside of the wall portion 15 of the low-height coil bobbin 18. At this time, the elasticity of the synthetic resin or the metal itself causes the second locking portion (projection) 16 to be fitted into the first locking portion (concave groove) 14 and locked while being biased to the outer surface of the wall portion. . Needless to say, the above mounting can be easily performed on the coil after the assembly is completed.
【００４１】図２に示される前記マウント吸着用カバー
３５を上述の係止機構にて装着した構成の面実装型コイ
ル４０においては、コイル上面が平坦になって、ここに
自動部品搭載装置の吸着ノズル先端を当てればエアーの
漏れなくマウント吸着が確実に行われることは言うまで
もない。In the surface mount type coil 40 having the structure for mounting the mount suction cover 35 shown in FIG. 2 by the above-mentioned locking mechanism, the upper surface of the coil is flat, and the suction of the automatic component mounting apparatus is performed there. It goes without saying that if the tip of the nozzle is applied, the mount will be securely sucked without air leakage.
【００４２】また同時に前記マウント吸着用カバー３５
が絶縁性を有していれば（多くの合成樹脂が絶縁性であ
る。）、基板実装後のコイルと外部との絶縁保護の役目
も果たすという利点がある。At the same time, the mount suction cover 35 is used.
Has an insulating property (many synthetic resins have an insulating property), there is an advantage that they also serve as insulating protection between the coil mounted on the board and the outside.
【００４３】次に、図３は本発明の請求項２に係わる面
実装型コイルの構成を説明するための斜視図であるが、
図中、面実装型コイル５０は第一の係止部１４′がＩ形
磁心２５′の実装面に垂直な外側の長手面３９に刻設さ
れており、マウント吸着用カバー３５′の第一側面３
３′に配設された第二の係止部１６′と掛合するように
構成されている他は前記請求項１に係わる実施例と同様
である。Next, FIG. 3 is a perspective view for explaining the structure of the surface mount coil according to claim 2 of the present invention.
In the figure, the first mounting portion 14 'of the surface mount type coil 50 is engraved on the outer longitudinal surface 39 perpendicular to the mounting surface of the I-shaped magnetic core 25', and the first mounting cover 35 'of the mount suction cover 35' is formed. Side 3
The second embodiment is the same as the embodiment according to claim 1 except that the second engagement portion 16 'disposed on the 3'is engaged with the second engagement portion 16'.
【００４４】本実施例の係止機構も前述と変わるところ
はないので以下詳細な説明は省略する。但し、Ｉ形磁心
２５′の第一の係止部１４′の加工は低コストで済み、
従来の低背コイルボビン１がそのまま使用できる点でコ
スト的に有利と考えられる。Since the locking mechanism of this embodiment is also the same as the above, detailed description will be omitted. However, the processing of the first locking portion 14 'of the I-shaped magnetic core 25' is low cost,
It is considered to be cost-effective because the conventional low-profile coil bobbin 1 can be used as it is.
【００４５】尚、以上から明らかなように、上記係止機
構によってＥ形磁心とＩ形磁心は互いにマウント吸着用
カバーで付勢圧着され、且つＥ形磁心の中央磁脚はコイ
ルボビンの嵌挿孔に嵌挿されているので、磁心は固定さ
れることになる。As is clear from the above, the E-shaped magnetic core and the I-shaped magnetic core are urged and pressed against each other by the mount suction cover by the locking mechanism, and the central magnetic leg of the E-shaped magnetic core is fitted into the coil bobbin insertion hole. The magnetic core is fixed because it is inserted into.
【００４６】したがって、従来要した磁心固定のための
接着剤の接続部への塗布ないしテープの巻き付け等が不
要となることは明らかである。Therefore, it is apparent that it is unnecessary to apply the adhesive agent for fixing the magnetic core to the connecting portion or to wind the tape, which is conventionally required.
【００４７】[0047]
【発明の効果】本発明に係わる面実装型コイルは、上記
のように構成されているため、以下に記載するような効
果を有する。Since the surface mount coil according to the present invention is constructed as described above, it has the following effects.
【００４８】（１）コイル上面に覆うようにマウント吸
着用カバーが装着されることにより、自動部品搭載装置
によるマウント吸着が確実となるという優れた効果を有
する。(1) Since the mount suction cover is mounted so as to cover the upper surface of the coil, there is an excellent effect that the mount suction by the automatic component mounting apparatus can be ensured.
【００４９】（２）マウント吸着用カバーはコイル組立
完成後に簡単に装着可能なので製造コストが低減される
という優れた効果を有する。(2) Since the mount suction cover can be easily mounted after the coil assembly is completed, it has an excellent effect of reducing the manufacturing cost.
【００５０】（３）磁心固定のための接着剤やテープの
巻き付けが不要になるという優れた効果を有する。(3) It has an excellent effect that it is not necessary to wind an adhesive or tape for fixing the magnetic core.
【図１】 本発明の請求項１に係わる面実装型コイルの
構成を説明するための斜視図である。FIG. 1 is a perspective view for explaining a configuration of a surface mount coil according to claim 1 of the present invention.
【図２】 マウント吸着用カバーを装着した状態の完成
後の上記面実装型コイルのＡーＢ線縦断面図である。FIG. 2 is a vertical sectional view taken along the line AB of the surface-mounted coil after completion of the state where the mount suction cover is attached.
【図３】 本発明の請求項２に係わる面実装型コイルの
構成を説明するための斜視図である。FIG. 3 is a perspective view for explaining the configuration of the surface mount coil according to claim 2 of the present invention.
【図４】 従来の面実装型インダクタに使用されるコイ
ルボビンの斜視図である。FIG. 4 is a perspective view of a coil bobbin used in a conventional surface mount inductor.
【図５】 従来の面実装型インダクタの斜視図である。FIG. 5 is a perspective view of a conventional surface mount inductor.
【図６】 従来の面実装型インダクタに装着されている
合成樹脂製のカバーの斜視図である。FIG. 6 is a perspective view of a synthetic resin cover mounted on a conventional surface mount inductor.
【図７】 従来の合成樹脂製のカバーを装着した面実装
型インダクタの斜視図である。FIG. 7 is a perspective view of a conventional surface mount inductor with a synthetic resin cover attached.
１、１８ コイルボビン ２ 巻枠本体 ３ 嵌挿孔 ４ 巻線部 ５ 第一嵌装枠 ６ 第二嵌装枠 ７ 第一基台 ８ 第二基台 ９ 第一基台の嵌挿孔方向の側面 １０ 第二基台の嵌挿孔方向の側面 １１、１３ 入出力端子 １４、１４′ 第一の係止部 １５ 壁部 １６ 第二係止部 １７ Ｅ形磁心の基台側縁部 １９ 第三係止部 ２０、３０、４０、５０ 面実装型コイル ２１ Ｅ形磁心 ２２ 中央磁脚 ２３、２４ 側磁脚 ２５、２５′ Ｉ形磁心 ２６ 巻線 ２７ 第一側面の内側の壁部に沿う縁 ２８ 接着剤 ２９ 合成樹脂製のカバー ３２ 覆平面部 ３３、３３′ 側壁部 ３４ 係止部 ３５、３５′ マウント吸着用カバー ３６ 切り込み溝 ３７ 角隅下部 ３９ Ｉ形磁心２５′の実装面に垂直な外側の長手
面 Ｗ マウント吸着用カバーの幅寸法 ｄ マウント吸着用カバーの厚さ1, 18 Coil bobbin 2 Winding frame body 3 Fitting insertion hole 4 Winding part 5 First fitting frame 6 Second fitting frame 7 First base 8 Second base 9 Side surface of first base in fitting hole direction 10 Side surface of second base in fitting hole direction 11, 13 Input / output terminals 14, 14 'First locking part 15 Wall part 16 Second locking part 17 Edge part of base of E-shaped magnetic core 19 Third Locking part 20, 30, 40, 50 Surface mount coil 21 E-shaped magnetic core 22 Central magnetic leg 23, 24 Side magnetic leg 25, 25 'I-shaped magnetic core 26 Winding 27 Edge along inner wall of first side 28 Adhesive 29 Synthetic resin cover 32 Covering plane part 33, 33 'Side wall part 34 Locking part 35, 35' Mount adsorption cover 36 Notch groove 37 Corner lower part 39 I Vertical to the mounting surface of magnetic core 25 ' Longitudinal surface on the outside W Width dimension of the mount suction cover d Thickness of the mount suction cover
Claims (2)
れるとともに外側に巻線が捲回される巻枠本体と、該巻
枠本体を両端にて狭装する嵌装枠と、前記両端の嵌装枠
を支持するとともにそれぞれ入出力端子が設けられた基
台と、を有する低背コイルボビンに巻線を施し、磁性材
料からなる中央磁脚とその両側に配した側磁脚から構成
されるＥ形磁心と、Ｉ形磁心と、を組合わせることによ
り日形閉磁路が構成される面実装型コイルにおいて、前
記低背コイルボビンのＩ形磁心が配設される側の基台側
面に第一の係止部を有するとともに前記Ｉ形磁心を支持
する壁部が立設され、さらにコイル上面を覆う平坦な覆
平面部と、該覆平面部の前記壁部に沿う縁から実装面側
に垂直に延設されるとともに前記第一の係止部と掛合す
る第二の係止部を配設した第一側面と、前記覆平面部の
Ｅ形磁心渡り部側に沿う縁から実装面側に垂直に延設さ
れるとともに前記Ｅ形磁心の基台側縁部と掛合する第三
の係止部を有する第二側面とを有し、非磁性材料を成形
してなるマウント吸着用カバーをコイル上面に覆うよう
に装着したことを特徴とする面実装型コイル。1. A winding frame main body having an insertion hole into which a magnetic core is inserted and having a winding wound on the outside, and a mounting frame for narrowing the winding frame main body at both ends. A low-height coil bobbin having a base on which the fitting frames at both ends are supported and input / output terminals are respectively provided, is wound, and a central magnetic leg made of a magnetic material and side magnetic legs arranged on both sides thereof are formed. In a surface-mounted coil in which a day-shaped closed magnetic circuit is formed by combining the configured E-shaped magnetic core and I-shaped magnetic core, the side surface of the base of the low-height coil bobbin on the side where the I-shaped magnetic core is disposed. A wall portion that has a first locking portion and that supports the I-shaped magnetic core is erected, and a flat cover plane portion that covers the upper surface of the coil and a mounting surface from an edge of the cover plane portion along the wall portion. A second locking portion that extends vertically to the side and engages with the first locking portion. A third engaging member that extends perpendicularly to the mounting surface side from the provided first side surface and the edge of the covering flat surface portion along the E-shaped magnetic core crossing portion side, and engages with the base side edge portion of the E-shaped magnetic core. And a second side surface having a stop portion, wherein a mount suction cover formed by molding a non-magnetic material is mounted so as to cover the upper surface of the coil.
れるとともに外側に巻線が捲回される巻枠本体と、該巻
枠本体を両端にて狭装する嵌装枠と、前記両端の嵌装枠
を支持するとともにそれぞれ入出力端子が設けられた基
台と、を有する低背コイルボビンに巻線を施し、磁性材
料からなる中央磁脚とその両側に配した側磁脚から構成
されるＥ形磁心と、Ｉ形磁心と、を組合わせることによ
り日形閉磁路が構成される面実装型コイルにおいて、前
記Ｉ形磁心の実装面に垂直な外側の長手面に第一の係止
部を刻設するとともに、コイル上面を覆う平坦な覆平面
部と、該覆平面部のＩ形磁心に沿う縁から実装面側に垂
直に延設されるとともに前記第一の係止部と掛合する第
二の係止部を配設した第一側面と、前記覆平面部のＥ形
磁心渡り部側に沿う縁から実装面側に垂直に延設される
とともに前記Ｅ形磁心の基台側縁部と掛合する第三の係
止部を有する第二側面とを有し、非磁性材料を成形して
なるマウント吸着用カバーをコイル上面に覆うように装
着したことを特徴とする面実装型コイル。2. A winding frame main body in which a fitting insertion hole into which a magnetic core is inserted is formed and an outer winding is wound, and a fitting frame in which the winding frame main body is narrowed at both ends. A low-height coil bobbin having a base on which the fitting frames at both ends are supported and input / output terminals are respectively provided, is wound, and a central magnetic leg made of a magnetic material and side magnetic legs arranged on both sides thereof are formed. In a surface-mounting type coil in which a day-shaped closed magnetic circuit is formed by combining an E-shaped magnetic core and an I-shaped magnetic core that are configured, a first longitudinal surface on an outer side perpendicular to a mounting surface of the I-shaped magnetic core is provided. The engaging portion is engraved, and the flat covering flat surface portion covers the upper surface of the coil, and the first engaging portion extends vertically from the edge of the covering flat surface portion along the I-shaped magnetic core to the mounting surface side. Along a first side surface provided with a second engaging portion that engages with and a side of the E-shaped magnetic core crossing portion of the covering plane portion. A non-magnetic material having a second side surface extending vertically from the edge to the mounting surface side and having a third engaging portion that engages with the base side edge portion of the E-shaped magnetic core. A surface mount coil, wherein a mount suction cover is mounted so as to cover the upper surface of the coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24133093A JPH0799120A (en) | 1993-09-28 | 1993-09-28 | Surface-mounting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24133093A JPH0799120A (en) | 1993-09-28 | 1993-09-28 | Surface-mounting coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0799120A true JPH0799120A (en) | 1995-04-11 |
Family
ID=17072698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24133093A Pending JPH0799120A (en) | 1993-09-28 | 1993-09-28 | Surface-mounting coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0799120A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0729812U (en) * | 1993-10-29 | 1995-06-02 | 富士電気化学株式会社 | Inductance element |
| JP2003059760A (en) * | 2001-08-09 | 2003-02-28 | Murata Mfg Co Ltd | Composite electronic component equipped with metallic case |
| JP2005505916A (en) * | 2001-09-28 | 2005-02-24 | クーパー・テクノロジーズ・カンパニー | Component core with coil termination |
| JP2005294641A (en) * | 2004-04-01 | 2005-10-20 | Tdk Corp | Electronic component |
| JP2006073783A (en) * | 2004-09-02 | 2006-03-16 | Tdk Corp | Electronic part |
| JP2010073663A (en) * | 2008-09-22 | 2010-04-02 | Alps Electric Co Ltd | Push switch |
| JP2018067674A (en) * | 2016-10-21 | 2018-04-26 | スミダコーポレーション株式会社 | Transformer cover and transformer device |
| JP2019192848A (en) * | 2018-04-27 | 2019-10-31 | Ｎｊコンポーネント株式会社 | Coil component |
| JP2022513313A (en) * | 2019-09-10 | 2022-02-07 | スミダ・コンポーネンツ・アンド・モジュールズ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Inductive component |
-
1993
- 1993-09-28 JP JP24133093A patent/JPH0799120A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0729812U (en) * | 1993-10-29 | 1995-06-02 | 富士電気化学株式会社 | Inductance element |
| JP2003059760A (en) * | 2001-08-09 | 2003-02-28 | Murata Mfg Co Ltd | Composite electronic component equipped with metallic case |
| JP2005505916A (en) * | 2001-09-28 | 2005-02-24 | クーパー・テクノロジーズ・カンパニー | Component core with coil termination |
| JP2005294641A (en) * | 2004-04-01 | 2005-10-20 | Tdk Corp | Electronic component |
| JP2006073783A (en) * | 2004-09-02 | 2006-03-16 | Tdk Corp | Electronic part |
| JP2010073663A (en) * | 2008-09-22 | 2010-04-02 | Alps Electric Co Ltd | Push switch |
| JP2018067674A (en) * | 2016-10-21 | 2018-04-26 | スミダコーポレーション株式会社 | Transformer cover and transformer device |
| JP2019192848A (en) * | 2018-04-27 | 2019-10-31 | Ｎｊコンポーネント株式会社 | Coil component |
| JP2022513313A (en) * | 2019-09-10 | 2022-02-07 | スミダ・コンポーネンツ・アンド・モジュールズ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Inductive component |
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| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20010605 |