JP4678401B2 - Coil component and manufacturing method thereof - Google Patents

Coil component and manufacturing method thereof Download PDF

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JP4678401B2
JP4678401B2 JP2007313668A JP2007313668A JP4678401B2 JP 4678401 B2 JP4678401 B2 JP 4678401B2 JP 2007313668 A JP2007313668 A JP 2007313668A JP 2007313668 A JP2007313668 A JP 2007313668A JP 4678401 B2 JP4678401 B2 JP 4678401B2
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partition
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coil
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JP2009141004A (en
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悟 去石
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TDK Corp
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Description

本発明は、ＬＡＮ等に用いられる信号用パルストランスとして好適なコイル部品及びその製造方法に関する。 The present invention relates to a process for the preparation of the preferred coil component and its as a signal pulse transformer used in the LAN.

底部（基板対向側）が開放されたケースにトロイダルトランスを収容した表面実装型電子部品パッケージが従来から知られている（下記特許文献１〜６）。ケース内部には側壁間をわたす均一高さの仕切り（特許文献１のFig.10の符号36）が形成されている。
米国特許第6,297,721号公報 米国特許第5,656,985号公報 米国特許第6,297,720号公報 米国特許第6,320,489号公報 米国特許第6,344,785号公報 米国特許第6,662,431号公報 2. Description of the Related Art Conventionally, surface-mounted electronic component packages in which a toroidal transformer is accommodated in a case whose bottom (substrate facing side) is open are known (Patent Documents 1 to 6 below). A uniform-height partition (reference numeral 36 in FIG. 10 of Patent Document 1) is formed between the side walls inside the case.
US Patent No. 6,297,721 U.S. Pat.No. 5,656,985 U.S. Patent No. 6,297,720 U.S. Pat.No. 6,320,489 U.S. Pat.No. 6,344,785 U.S. Pat.No. 6,662,431

ケースに収容されたトロイダルトランスは一般に樹脂等によってケースに接着されるが、従来のような仕切りをケースに形成すると、仕切りの両側にトロイダルトランスを収容して接着する場合に接着剤の流動が仕切りによって妨げられて均一化が図りにくい。そうすると接着剤の偏りやバラツキを防止するためにより多くの接着剤が必要となり好ましくない。   The toroidal transformer housed in the case is generally bonded to the case by resin or the like. However, when a conventional partition is formed on the case, the flow of the adhesive is separated when the toroidal transformer is housed and bonded on both sides of the partition. It is difficult to achieve uniformity by being hindered by In this case, more adhesive is required to prevent unevenness and variation of the adhesive, which is not preferable.

本発明はこうした状況を認識してなされたものであり、その目的は、ケース内部に仕切り部を設けた構成において、インダクタンス素子の接着の際に従来よりも接着剤を流動させやすく均一化を図りやすいコイル部品及びその製造方法を提供することにある。 The present invention has been made in view of such a situation, and an object of the present invention is to make the adhesive easier to flow than in the past when the inductance element is bonded in a configuration in which a partition portion is provided inside the case, and to achieve uniformization. It is to provide a method of manufacturing easy coil component and its.

本発明の第１の態様は、コイル部品である。このコイル部品は、
側壁部と、前記側壁部の上方を覆う天井部とを有し、前記天井部内面に形成された仕切り部によって内部が第１室及び第２室に区画されたケースと、
前記第１室及び前記第２室にそれぞれ収容され、前記天井部内面に接着剤で固定されたインダクタンス素子とを備え、
各々のインダクタンス素子は、環状コアに巻線を施してなるものであり、
前記第１室及び前記第２室は、前記ケース長手方向の異なる位置にあり、
前記第１室と前記第２室との境界の一部において前記天井部内面が露出して前記第１室と前記第２室との連通路を成し、かつ前記仕切り部が前記インダクタンス素子を位置決めし、
前記仕切り部は、前記ケース長手方向の異なる位置に分かれて存在し、一方の仕切り部が前記第１室に面し、他方の仕切り部が前記第２室に面し、
前記一方の仕切り部と前記他方の仕切り部との間の空間領域に電子部品が存在しない。 The first aspect of the present invention is a coil component. This coil component
A case having a side wall and a ceiling that covers the upper side of the side wall, the interior of the case being partitioned into a first chamber and a second chamber by a partition formed on the inner surface of the ceiling;
An inductance element accommodated in each of the first chamber and the second chamber and fixed to the inner surface of the ceiling portion with an adhesive;
Each inductance element is formed by winding a ring core.
The first chamber and the second chamber are at different positions in the case longitudinal direction,
The inner surface of the ceiling portion is exposed at a part of the boundary between the first chamber and the second chamber to form a communication path between the first chamber and the second chamber , and the partition portion includes the inductance element. Positioning,
The partition portion is present at different positions in the case longitudinal direction, one partition portion faces the first chamber, and the other partition portion faces the second chamber,
There is no electronic component in the space region between the one partition and the other partition .

第１の態様のコイル部品において、前記仕切り部の各々は、向かい合う前記側壁部の各々から前記天井部に跨って形成されているとよい。 In the coil component according to the first aspect, each of the partition portions may be formed so as to straddle the ceiling portion from each of the side wall portions facing each other.

第１の態様のコイル部品において、前記連通路が前記第１室と前記第２室との境界の略中央に形成されているとよい。   In the coil component according to the first aspect, it is preferable that the communication path is formed at substantially the center of the boundary between the first chamber and the second chamber.

第１の態様のコイル部品において、前記仕切り部の角部が面取りされているとよい。   In the coil component according to the first aspect, corners of the partition part may be chamfered.

第１の態様のコイル部品において、
前記仕切り部は前記ケース短手方向と略平行であり、
前記インダクタンス素子は、それぞれ環状コアに巻線を施してなるパルストランス及びコモンモードチョークコイルの組であり、
前記パルストランス及び前記コモンモードチョークコイルは、前記環状コアが前記ケース短手方向と略平行になるように前記ケース長手方向に並べて縦置きされ、前記コモンモードチョークコイルが前記パルストランスよりも前記仕切り部側に位置しているとよい。 In the coil component of the first aspect,
The partition portion is substantially parallel to the lateral direction of the case;
The inductance element is a set of a pulse transformer and a common mode choke coil each formed by winding a ring core.
The pulse transformer and the common mode choke coil are vertically arranged side by side in the longitudinal direction of the case so that the annular core is substantially parallel to the lateral direction of the case, and the common mode choke coil is separated from the pulse transformer by the partition. It is good to be located on the part side.

第１の態様のコイル部品において、前記連通路の幅ａは、前記第１室と前記第２室との境界の長さｂに対して ｂ／５≦ａ≦２ｂ／３ の範囲内であるとよい。   In the coil component according to the first aspect, the width a of the communication path is in the range of b / 5 ≦ a ≦ 2b / 3 with respect to the length b of the boundary between the first chamber and the second chamber. Good.

第１の態様のコイル部品において、前記仕切り部は、前記天井部からの高さｈが前記側壁部の高さｇに対して ｇ／３≦ｈ≦２ｇ／３ の範囲内であるとよい。   In the coil component according to the first aspect, the partition portion may have a height h from the ceiling portion in a range of g / 3 ≦ h ≦ 2 g / 3 with respect to a height g of the side wall portion.

本発明の第２の態様は、コイル部品の製造方法である。この方法は、
側壁部と、前記側壁部の上方を覆う天井部とを有し、前記天井部内面に形成された仕切り部によって内部が第１室及び第２室に区画され、前記第１室と前記第２室との境界の一部において前記天井部が露出して前記第１室と前記第２室との連通路を成しているケースを用い、コイル部品を製造する方法であり、
前記第１室及び前記第２室は、前記ケース長手方向の異なる位置にあり、
前記仕切り部は、前記ケース長手方向の異なる位置に分かれて存在し、一方の仕切り部が前記第１室に面し、他方の仕切り部が前記第２室に面し、本方法は、
前記第１室及び前記第２室の各々に、環状コアに巻線を施してなるインダクタンス素子を、前記仕切り部によって位置決めして収容する工程と、
収容した前記インダクタンス素子を接着剤で前記天井部内面に固定する工程とを含み、
前記一方の仕切り部と前記他方の仕切り部との間の空間領域に電子部品を配置しない。 The second aspect of the present invention is a method for manufacturing a coil component. This method
The first chamber and the second chamber are divided into a first chamber and a second chamber by a partition portion formed on the inner surface of the ceiling portion. A method of manufacturing a coil component using a case in which the ceiling portion is exposed at a part of a boundary with a chamber to form a communication path between the first chamber and the second chamber ;
The first chamber and the second chamber are at different positions in the case longitudinal direction,
The partition portion is present at different positions in the case longitudinal direction, one partition portion faces the first chamber, the other partition portion faces the second chamber, and the method includes:
A step of positioning and accommodating an inductance element formed by winding a ring core in each of the first chamber and the second chamber by the partition ;
The accommodating the said inductance element seen including a step of fixing to the ceiling portion inner surface with adhesive,
Electronic components are not arranged in a space region between the one partition part and the other partition part .

なお、以上の構成要素の任意の組合せもまた、本発明の態様として有効である。   It should be noted that any combination of the above components is also effective as an aspect of the present invention.

本発明によれば、天井部内面に形成された仕切り部によってケース内部が第１室及び第２室に区画され、前記第１室と前記第２室との境界の一部において前記天井部内面が露出し又は前記仕切り部の高さが低くなっていて前記第１室と前記第２室との連通路を成しているため、ケース内部に仕切り部を設けた構成において、インダクタンス素子の接着の際に従来よりも接着剤を流動させやすく均一化を図りやすい。   According to the present invention, the inside of the case is partitioned into the first chamber and the second chamber by the partition portion formed on the inner surface of the ceiling portion, and the inner surface of the ceiling portion at a part of the boundary between the first chamber and the second chamber. Is exposed or the height of the partition portion is low and forms a communication path between the first chamber and the second chamber. In this case, it is easier to make the adhesive flow more uniform than in the past, and it is easy to make it uniform.

以下、図面を参照しながら本発明の好適な実施の形態を詳述する。なお、各図面に示される同一または同等の構成要素、部材等には同一の符号を付し、適宜重複した説明は省略する。また、実施の形態は発明を限定するものではなく例示であり、実施の形態に記述されるすべての特徴やその組み合わせは必ずしも発明の本質的なものであるとは限らない。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

図１は、本発明の実施の形態に係るコイル部品１００の底面図である。図２は、図１に示されるコイル部品１００の回路図である。図３は、図１に示されるケース１０の概略斜視図（上側が底面）である。図４は、図１に示されるインダクタンス素子（送信側パルストランス５２Ｔ等）の環状コアの形状説明図（（Ａ）は断面図、（Ｂ）は斜視図）である。図５は、図１のV-V'断面図である。   FIG. 1 is a bottom view of a coil component 100 according to an embodiment of the present invention. FIG. 2 is a circuit diagram of the coil component 100 shown in FIG. FIG. 3 is a schematic perspective view of the case 10 shown in FIG. FIG. 4 is an explanatory view of the shape of the annular core of the inductance element (transmission-side pulse transformer 52T and the like) shown in FIG. 1 ((A) is a cross-sectional view, and (B) is a perspective view). 5 is a cross-sectional view taken along the line VV ′ of FIG.

コイル部品１００は、ケース１０内にインダクタンス素子としてそれぞれ環状コア（図４参照、材質は例えばフェライト）にポリウレタン被覆銅線等の巻線を施してなる送信側パルストランス５２Ｔと、送信側コモンモードチョークコイル５４Ｔと、受信側パルストランス５２Ｒと、受信側コモンモードチョークコイル５４Ｒとを収容したものである。各インダクタンス素子は、図２に示される回路を成すように結線される。   The coil component 100 includes a transmission-side pulse transformer 52T in which a winding such as polyurethane-coated copper wire is applied to an annular core (see FIG. 4, for example, ferrite) as an inductance element in the case 10, and a transmission-side common mode choke. The coil 54T, the reception side pulse transformer 52R, and the reception side common mode choke coil 54R are accommodated. Each inductance element is connected so as to form a circuit shown in FIG.

図１及び図３に示されるように、ケース１０は、方形枠を成す側壁部１２Ａ〜１２Ｄと、側壁部１２Ａ〜１２Ｄの上方を覆う天井部１４とを有し、所定本数（図では１６本）のピン端子２０が設けられている。側壁部１２Ａ，１２Ｃはケース１０長手方向と平行で互いに向かい合い、側壁部１２Ｂ，１２Ｄはケース１０短手方向と平行で互いに向かい合っている。なお、ケース１０は例えば液晶ポリマーを材料とし、ピン端子２０は例えばリン青銅にSnメッキを施したものである。   As shown in FIGS. 1 and 3, the case 10 has side walls 12A to 12D that form a rectangular frame and a ceiling 14 that covers the upper side of the side walls 12A to 12D, and has a predetermined number (16 in the figure). ) Pin terminal 20 is provided. The side wall portions 12A and 12C are parallel to the longitudinal direction of the case 10 and face each other, and the side wall portions 12B and 12D are parallel to the lateral direction of the case 10 and face each other. The case 10 is made of, for example, a liquid crystal polymer, and the pin terminal 20 is made of, for example, phosphor bronze plated with Sn.

天井部１４内面に形成された仕切り部１６Ａ〜１６Ｄ（例えば板状）によってケース１０内部は第１室２１及び第２室２２に区画されている。好ましくは、仕切り部１６Ａ，１６Ｂはケース１０長手方向の異なる位置に側壁部１２Ａから天井部１４に跨ってケース１０短手方向と略平行に形成され、仕切り部１６Ｃ，１６Ｄはケース１０長手方向の異なる位置に側壁部１２Ｃから天井部１４に跨ってケース１０短手方向と略平行に形成される。ここで、仕切り部１６Ａ，１６Ｃはケース１０長手方向位置が同じであり、仕切り部１６Ｂ，１６Ｄもケース１０長手方向位置が同じである。なお、図３に示されるように、仕切り部１６Ａ〜１６Ｄの角部は丸みを帯びるように面取りされている。なお、側壁部１２Ａ〜１２Ｄ、天井部１４及び仕切り部１６Ａ〜１６Ｄは、例えば樹脂成形で一体に形成されている。   The interior of the case 10 is partitioned into a first chamber 21 and a second chamber 22 by partition portions 16A to 16D (for example, plate-like) formed on the inner surface of the ceiling portion 14. Preferably, the partition portions 16A and 16B are formed at different positions in the longitudinal direction of the case 10 from the side wall portion 12A to the ceiling portion 14 and substantially parallel to the lateral direction of the case 10, and the partition portions 16C and 16D are arranged in the longitudinal direction of the case 10. It is formed at a different position from the side wall portion 12 </ b> C to the ceiling portion 14 so as to be substantially parallel to the lateral direction of the case 10. Here, the partition parts 16A and 16C have the same case 10 longitudinal position, and the partition parts 16B and 16D have the same case 10 longitudinal position. In addition, as FIG. 3 shows, the corner | angular part of the partition parts 16A-16D is chamfered so that it may become roundish. Note that the side wall portions 12A to 12D, the ceiling portion 14, and the partition portions 16A to 16D are integrally formed by resin molding, for example.

第１室２１と第２室２２との境界の一部において天井部１４内面が露出しており、この部分が第１室２１と第２室２２との連通路２６となっている。連通路２６は好ましくは図１及び図３に示されるように第１室２１と第２室２２との境界の中央（ケース１０短手方向中央）に位置する。   The inner surface of the ceiling portion 14 is exposed at a part of the boundary between the first chamber 21 and the second chamber 22, and this portion serves as a communication path 26 between the first chamber 21 and the second chamber 22. The communication passage 26 is preferably located at the center of the boundary between the first chamber 21 and the second chamber 22 (center in the lateral direction of the case 10) as shown in FIGS.

図１に示されるように、送信側パルストランス５２Ｔ及び送信側コモンモードチョークコイル５４Ｔは、環状コアがケース１０短手方向と略平行になるように第１室２１にケース１０長手方向に並べて収容（縦置き）され、天井部１４内面に接着剤としての注型樹脂（図１では省略）で固定される。送信側コモンモードチョークコイル５４Ｔは送信側パルストランス５２Ｔよりも仕切り部１６Ａ〜１６Ｄ側に位置する。受信側パルストランス５２Ｒ及び受信側コモンモードチョークコイル５４Ｒは、環状コアがケース１０短手方向と略平行になるように第２室２２にケース１０長手方向に並べて収容され、天井部１４内面に接着剤としての注型樹脂（図１では省略）で固定される。受信側コモンモードチョークコイル５４Ｒは受信側パルストランス５２Ｒよりも仕切り部１６Ａ〜１６Ｄ側に位置する。なお、接着剤としての注型樹脂は例えば、ソフトエポキシ等のエポキシ樹脂、ポリイミド樹脂、ポリアミド樹脂など、流動性があり硬化後に接着性を有する材料が使用できる。これによる接着固定の様子は図５に例示され、送信側パルストランス５２Ｔ、送信側コモンモードチョークコイル５４Ｔ、受信側パルストランス５２Ｒ及び受信側コモンモードチョークコイル５４Ｒは、注型樹脂６０にて天井部１４及び側壁１２Ａ，１２Ｃに固定される。   As shown in FIG. 1, the transmission-side pulse transformer 52T and the transmission-side common mode choke coil 54T are accommodated in the first chamber 21 in the longitudinal direction of the case 10 so that the annular core is substantially parallel to the lateral direction of the case 10. (Vertically placed) and fixed to the inner surface of the ceiling portion 14 with a casting resin (not shown in FIG. 1) as an adhesive. The transmission-side common mode choke coil 54T is located closer to the partitions 16A to 16D than the transmission-side pulse transformer 52T. The reception-side pulse transformer 52R and the reception-side common mode choke coil 54R are accommodated in the second chamber 22 side by side in the longitudinal direction of the case 10 so that the annular core is substantially parallel to the lateral direction of the case 10, and bonded to the inner surface of the ceiling portion 14 It is fixed with a casting resin (not shown in FIG. 1) as an agent. The reception-side common mode choke coil 54R is located closer to the partitions 16A to 16D than the reception-side pulse transformer 52R. As the casting resin as the adhesive, for example, an epoxy resin such as a soft epoxy, a polyimide resin, a polyamide resin, or the like can be used. FIG. 5 illustrates the state of adhesion and fixing by this, and the transmission side pulse transformer 52T, the transmission side common mode choke coil 54T, the reception side pulse transformer 52R, and the reception side common mode choke coil 54R are formed by a casting resin 60 on the ceiling. 14 and side walls 12A and 12C.

本実施の形態のコイル部品１００を製造するには下記の工程を踏む。なお、一連の作業は通常、ケース１０の天井部１４が下になるように保持して行う。   To manufacture the coil component 100 of the present embodiment, the following steps are taken. In addition, a series of work is normally performed with the ceiling portion 14 of the case 10 held downward.

１．収容工程… 図１に示されるように、ケース１０の第１室２１にインダクタンス素子としての送信側パルストランス５２Ｔ及び送信側コモンモードチョークコイル５４Ｔを収容し、ケース１０の第２室２２にインダクタンス素子としての受信側パルストランス５２Ｒ及び受信側コモンモードチョークコイル５４Ｒを収容する。
２．はんだ付け工程… 図１に示されるように、各インダクタンス素子の巻線端末を所定の端子ピン２０に絡げてはんだ付けを行い、図２に示される回路を作成する。なお、はんだ付けには例えばSn系Pbフリー半田を用いる。
３．接着工程… 第１室２１及び第２室２２に収容された各インダクタンス素子を注型樹脂６０（図５参照）にて天井部１４内面に接着固定する。
こうして製造されたコイル部品１００は、ケース１０の天井部１４が上になるようにして基板（不図示）に実装される。 1. Accommodating Step As shown in FIG. 1, the transmission side pulse transformer 52T and the transmission side common mode choke coil 54T as the inductance elements are accommodated in the first chamber 21 of the case 10, and the inductance element is accommodated in the second chamber 22 of the case 10. The receiving side pulse transformer 52R and the receiving side common mode choke coil 54R are accommodated.
2. Soldering Step As shown in FIG. 1, the winding terminal of each inductance element is entangled with a predetermined terminal pin 20 and soldered to create the circuit shown in FIG. For example, Sn-based Pb-free solder is used for soldering.
3. Bonding process: Each inductance element housed in the first chamber 21 and the second chamber 22 is bonded and fixed to the inner surface of the ceiling portion 14 with a casting resin 60 (see FIG. 5).
The coil component 100 manufactured in this way is mounted on a substrate (not shown) with the ceiling portion 14 of the case 10 facing upward.

本実施の形態によれば、下記の効果を奏することができる。   According to the present embodiment, the following effects can be achieved.

(1) 天井部１４内面に形成された仕切り部１６Ａ〜１６Ｄによってケース１０内部は第１室２１及び第２室２２に区画され、第１室２１と第２室２２との境界の一部において天井部１４内面が露出しており、この部分が第１室２１と第２室２２との連通路２６となっているため、従来のような側壁間をわたす均一高さの仕切り（特許文献１のFig.10の符号36）が形成されている場合と比較して、注型樹脂によるインダクタンス素子の接着固定の際に注型樹脂を流動させやすく均一化を図りやすい。したがって、注型樹脂の使用量削減に有利でコスト低下になる。ここで、連通路２６が第１室２１と第２室２２との境界の中央（ケース１０短手方向中央）に位置する場合は、同境界の端に連通路が位置する場合と比較して注型樹脂をより流動させやすく均一化しやすい。 (1) The interior of the case 10 is partitioned into a first chamber 21 and a second chamber 22 by partition portions 16 </ b> A to 16 </ b> D formed on the inner surface of the ceiling portion 14, and at a part of the boundary between the first chamber 21 and the second chamber 22. Since the inner surface of the ceiling portion 14 is exposed and this portion serves as a communication passage 26 between the first chamber 21 and the second chamber 22, a partition having a uniform height across the side walls as in the prior art (Patent Document 1). Compared with the case where the reference numeral 36) in Fig. 10 is formed, the casting resin is easier to flow and uniform when the inductance element is bonded and fixed by the casting resin. Therefore, it is advantageous for reducing the amount of casting resin used, and the cost is reduced. Here, when the communication path 26 is located at the center of the boundary between the first chamber 21 and the second chamber 22 (case 10 in the lateral direction of the case), compared to the case where the communication path is positioned at the end of the boundary. The casting resin can be made to flow more easily and easily.

(2) 仕切り部１６Ａ〜１６Ｄによってケース１０内部にインダクタンス素子の配置領域が２つ区画されるため、仕切り部が存在しない場合と比較してインダクタンス素子の位置決めが容易となる。 (2) Since the partitioning portions 16A to 16D divide the two placement areas of the inductance element inside the case 10, positioning of the inductance element is facilitated as compared with the case where no partitioning portion is present.

(3) 仕切り部１６Ａ，１６Ｂが側壁部１２Ａから天井部１４に跨って形成され、仕切り部１６Ｃ，１６Ｄが側壁部１２Ｃから天井部１４に跨って形成されるため、ケース１０の機械的強度が高められる。 (3) Since the partition portions 16A and 16B are formed from the side wall portion 12A to the ceiling portion 14, and the partition portions 16C and 16D are formed from the side wall portion 12C to the ceiling portion 14, the mechanical strength of the case 10 is increased. Enhanced.

(4) 仕切り部１６Ａ，１６Ｂがケース１０長手方向の異なる位置に形成され、仕切り部１６Ｃ，１６Ｄもケース１０長手方向の異なる位置に形成されるため、少なくとも仕切り部１６Ａ，１６Ｂ間の距離（＝仕切り部１６Ｃ，１６Ｄ間の距離）だけ第１室２１及び第２室２２のインダクタンス素子間の距離を確保でき、干渉を防止することができる。このような構成は、後述の図６に示す第１室２１及び第２室２２間の距離ｃを側壁１２Ａ，１２Ｃの厚さの２倍以上確保する必要がある場合には特に有効といえる。 (4) Since the partition parts 16A and 16B are formed at different positions in the longitudinal direction of the case 10, and the partition parts 16C and 16D are also formed at different positions in the longitudinal direction of the case 10, at least the distance between the partition parts 16A and 16B (= The distance between the inductance elements of the first chamber 21 and the second chamber 22 can be ensured by the distance between the partition portions 16C and 16D), and interference can be prevented. Such a configuration can be said to be particularly effective when the distance c between the first chamber 21 and the second chamber 22 shown in FIG. 6 to be described later needs to be secured at least twice the thickness of the side walls 12A, 12C.

(5) コモンモードチョークコイルよりも干渉が問題となりやすいパルストランスを第１室２１及び第２室２２のそれぞれにおいてコモンモードチョークコイルよりも仕切り部１６Ａ〜１６Ｄから離した配置としているので、送信側パルストランス５２Ｔ及び受信側パルストランス５２Ｒ間の距離が大きく確保されて干渉が防止される。 (5) Since the pulse transformer in which interference is more problematic than the common mode choke coil is arranged in the first chamber 21 and the second chamber 22 away from the partition portions 16A to 16D than the common mode choke coil. A large distance is ensured between the pulse transformer 52T and the reception-side pulse transformer 52R, and interference is prevented.

(6) 側壁部１２Ａ，１２Ｃのそれぞれにおいて仕切り部がケース１０長手方向の異なる位置に２つに分けて形成されているため、第１室２１及び第２室２２のインダクタンス素子間の距離を同じだけ確保しようとする場合に、分厚い仕切り部が１つだけ形成されている場合と比較して仕切り部に使う材料（つまりケース１０に使う材料）を少なくすることができコスト安である。また、注型樹脂とケースとの熱膨張率差などを弾性力でカバーすることも可能となる。 (6) Since each of the side wall portions 12A and 12C is divided into two at different positions in the longitudinal direction of the case 10, the distance between the inductance elements of the first chamber 21 and the second chamber 22 is the same. In the case where only one thick partition portion is formed, the material used for the partition portion (that is, the material used for the case 10) can be reduced as compared with the case where only one thick partition portion is formed. It is also possible to cover the difference in coefficient of thermal expansion between the casting resin and the case with an elastic force.

(7) 第１室２１と第２室２２との境界の一部が連通路２６となっているので、仕切り部が同一高さで両側壁部間に連続している場合と比較して、インダクタンス素子をケースに収容する際（あるいは何らかの理由でケースから取り出す際）の作業性が良い。ここで、仕切り部１６Ａ〜１６Ｄの角部（連通路２６に臨む部分）は丸みを帯びるように面取りされているため、面取りがされない場合と比較してインダクタンス素子を傷つけにくくなり、作業性もいっそう改善される。 (7) Since a part of the boundary between the first chamber 21 and the second chamber 22 is a communication path 26, compared with the case where the partition portion is continuous between both side walls at the same height, The workability when the inductance element is accommodated in the case (or when taken out from the case for some reason) is good. Here, since the corners of the partitions 16A to 16D (portions facing the communication path 26) are chamfered so as to be rounded, the inductance element is less likely to be damaged compared to the case where chamfering is not performed, and the workability is further improved. Improved.

以下、コイル部品１００のケース１０の詳細な形状を実施例により説明する。図６は、実施例に係るコイル部品１００の形状説明図であり、（Ａ）は底面図、（Ｂ）は同底面図のB-B'断面図である。   Hereinafter, the detailed shape of the case 10 of the coil component 100 will be described with reference to examples. 6A and 6B are explanatory views of the shape of the coil component 100 according to the embodiment, in which FIG. 6A is a bottom view and FIG. 6B is a cross-sectional view along the line BB ′ of the bottom view.

本実施例において、仕切り部１６Ａ〜１６Ｄは、天井部１４からの高さｈが側壁部１２Ａ〜１２Ｄの高さｇに対して、ｇ／３≦ｈ≦２ｇ／３の範囲内であるものとする。ｇ／３≦ｈとするのは、ケース１０（特に側壁１２Ａ，１２Ｃ）の機械的強度の補強効果を高く維持するためであり、また仕切り部１６Ａ〜１６Ｄとインダクタンス素子との接触面積を所定量以上確保して仕切りとしての機能を十分に発揮させるためである。ここで、仕切りとしての機能が不十分であるとインダクタンス素子の位置決めの確実性が低下し、これを防ぐためにはより多くの注型樹脂が必要となる。一方、ｈ≦２ｇ／３とするのは、インダクタンス素子を第１室２１及び第２室２２に収容（挿入）する際の作業性を考慮したものである。   In the present embodiment, the partition portions 16A to 16D have a height h from the ceiling portion 14 within a range of g / 3 ≦ h ≦ 2g / 3 with respect to the height g of the side wall portions 12A to 12D. To do. The purpose of g / 3 ≦ h is to maintain a high reinforcing effect on the mechanical strength of the case 10 (particularly the side walls 12A and 12C), and the contact area between the partition portions 16A to 16D and the inductance element is a predetermined amount. This is to ensure the above and to fully exhibit the function as a partition. Here, if the function as a partition is insufficient, the reliability of positioning of the inductance element is lowered, and more casting resin is required to prevent this. On the other hand, h ≦ 2 g / 3 is considered in consideration of workability when the inductance element is accommodated (inserted) in the first chamber 21 and the second chamber 22.

連通路２６の幅ａは、第１室２１と第２室２２との境界の長さｂ（すなわち側壁１２Ａ，１２Ｃの内面間距離）に対して、ｂ／５≦ａ≦２ｂ／３の範囲内であるものとする。ｂ／５≦ａとするのは、注型樹脂の流動性を確保するためである。一方、ａ≦２ｂ／３とするのは、ケース１０（特に天井部１４）の機械的強度の補強効果を高く維持するためであり、また仕切り部１６Ａ〜１６Ｄとインダクタンス素子との接触面積を所定量以上確保して仕切りとしての機能を十分に発揮させるためである。上述のとおり、仕切りとしての機能が不十分であるとインダクタンス素子の位置決めの確実性が低下し、これを防ぐためにはより多くの注型樹脂が必要となる。   The width a of the communication passage 26 is in the range of b / 5 ≦ a ≦ 2b / 3 with respect to the length b of the boundary between the first chamber 21 and the second chamber 22 (that is, the distance between the inner surfaces of the side walls 12A and 12C). It shall be within. The reason for b / 5 ≦ a is to ensure the fluidity of the casting resin. On the other hand, a ≦ 2b / 3 is set in order to maintain a high reinforcing effect on the mechanical strength of the case 10 (particularly the ceiling portion 14), and the contact area between the partition portions 16A to 16D and the inductance element is determined. This is to ensure a certain amount or more and to fully exhibit the function as a partition. As described above, if the function as a partition is insufficient, the certainty of positioning of the inductance element is lowered, and more casting resin is required to prevent this.

第１室２１及び第２室２２間の距離ｃすなわち仕切り部１６Ａ，１６Ｂ間の距離ｃ（仕切り部１６Ｃ，１６Ｄ間の距離と略同一で、仕切り部の厚さも含む）は、第１室２１及び第２室２２のインダクタンス素子間で磁界が互いに干渉しない程度（又は干渉の影響が無視できる程度）の距離以上とし、かつ、第１室及び第２室２２のケース１０長手方向距離ｆがコモンモードチョークコイル５４Ｔ，５４Ｒのコア厚ｄとパルストランス５２Ｔ，５２Ｒのコア厚ｅに対して、ｆ≦（ｄ＋ｅ）×２となるようにする。なお、第１室及び第２室２２のケース１０長手方向距離は同じであってもよいし同じでなくてもよい。また、各インダクタンス素子のコア厚も同じであってもよいし同じでなくてもよい。   The distance c between the first chamber 21 and the second chamber 22, that is, the distance c between the partition portions 16A and 16B (substantially the same as the distance between the partition portions 16C and 16D, including the thickness of the partition portion) is the first chamber 21. In addition, the distance in the longitudinal direction of the case 10 between the first chamber and the second chamber 22 is common so that the magnetic fields do not interfere with each other between the inductance elements in the second chamber 22 (or the influence of interference can be ignored). F ≦ (d + e) × 2 with respect to the core thickness d of the mode choke coils 54T and 54R and the core thickness e of the pulse transformers 52T and 52R. In addition, the case 10 longitudinal direction distance of the 1st chamber and the 2nd chamber 22 may be the same, and does not need to be the same. Further, the core thickness of each inductance element may or may not be the same.

以上、実施の形態を例に本発明を説明したが、実施の形態の各構成要素や各工程には請求項に記載の範囲で種々の変形が可能であることは当業者に理解されるところである。以下、変形例について触れる。   The present invention has been described above by taking the embodiment as an example, but it will be understood by those skilled in the art that various modifications can be made to each component and each step of the embodiment within the scope of the claims. is there. Hereinafter, modifications will be described.

実施の形態では仕切り部１６Ａ，１６Ｃを別体（不連続）とし、仕切り部１６Ｂ，１６Ｄも別体（不連続）とし、第１室２１と第２室２２との境界の一部において天井部１４内面が露出して連通路２６となっている場合を説明した。変形例においては仕切り部１６Ａ，１６Ｃを一体（連続）とし、仕切り部１６Ｂ，１６Ｄも一体（連続）とし、一体とされたそれぞれの仕切り部の一部（好ましくはケース短手方向中央部）の高さを低くして注型樹脂を流動させるための連通路としてもよい。この場合、連通路部分における仕切り部の天井部からの高さは、連通路部分以外における高さの最大値の例えば１／３程度もしくはそれ以下が注型樹脂流動の観点から好ましい。   In the embodiment, the partition portions 16A and 16C are separated (discontinuous), the partition portions 16B and 16D are also separated (discontinuous), and the ceiling portion is part of the boundary between the first chamber 21 and the second chamber 22. The case where the inner surface 14 is exposed to form the communication path 26 has been described. In the modification, the partition portions 16A and 16C are integrated (continuous), and the partition portions 16B and 16D are also integrated (continuous), and a part of each of the integrated partition portions (preferably the central portion in the case short direction). It is good also as a communicating path for making casting resin flow by making height low. In this case, the height from the ceiling part of the partition part in the communicating path part is preferably about 1/3 or less of the maximum height other than the communicating path part from the viewpoint of casting resin flow.

実施の形態では仕切り部１６Ａ，１６Ｂを別体（不連続）としてケース１０長手方向の異なる位置に形成し、仕切り部１６Ｃ，１６Ｄも別体（不連続）としてケース１０長手方向の異なる位置に形成したが、変形例では肉厚の大きな仕切り部としてそれらを一体（連続）としてもよい。例えば第１室２１及び第２室２２間の距離ｃが側壁部１２Ａ，１２Ｃの厚さの２倍未満でよい場合には、本変形例のような構成は例えば仕切り部の強度を確保する点で有効といえる。   In the embodiment, the partition parts 16A and 16B are formed as separate bodies (discontinuous) at different positions in the longitudinal direction of the case 10, and the partition sections 16C and 16D are also formed as separate bodies (discontinuous) at different positions in the longitudinal direction of the case 10. However, in a modified example, they may be integrated (continuous) as a thick partition. For example, when the distance c between the first chamber 21 and the second chamber 22 may be less than twice the thickness of the side wall portions 12A and 12C, the configuration as in this modification example ensures the strength of the partition portion, for example. It can be said that it is effective.

実施の形態では仕切り部１６Ａ〜１６Ｄの角部は丸みを帯びているものとしたが、変形例ではこれに替えて、各仕切り部の角部は直線的に面取りしたものであってもよい。   In the embodiment, the corner portions of the partition portions 16A to 16D are rounded. However, in a modified example, the corner portions of the partition portions may be chamfered linearly instead.

実施の形態ではインダクタンス素子がパルストランスとコモンモードチョークコイルの組であって縦置きされる場合を説明したが、変形例ではこれに替えて、インダクタンス素子は１つのトランスやチョークコイルであってもよく、横置きされていてもよい。   In the embodiment, the case has been described in which the inductance element is a set of a pulse transformer and a common mode choke coil, and the inductance element is vertically arranged. However, in the modification, instead of this, the inductance element may be a single transformer or choke coil. Well, it may be placed horizontally.

実施の形態では向かい合う側壁部の各々から天井部に跨るように仕切り部が形成されたが、変形例では向かい合う側壁部の片方のみから天井部に跨るように仕切り部が形成されてもよい。   In the embodiment, the partition portion is formed so as to straddle the ceiling portion from each of the facing side wall portions. However, in the modified example, the partition portion may be formed so as to straddle the ceiling portion from only one of the facing side wall portions.

実施の形態では仕切り部が側壁部と天井部とに跨って形成されたが、変形例ではこれに替えて、仕切り部は天井部に形成されて側壁部に跨っていなくてもよい。この場合であっても、ケースの機械的強度の確保以外の点では実施の形態と同様の効果を奏することができる。   In the embodiment, the partition portion is formed over the side wall portion and the ceiling portion. However, in the modified example, instead of this, the partition portion may be formed in the ceiling portion and may not straddle the side wall portion. Even in this case, the same effects as those of the embodiment can be obtained except for securing the mechanical strength of the case.

本発明の実施の形態に係るコイル部品の底面図である。It is a bottom view of the coil component which concerns on embodiment of this invention. 図１に示されるコイル部品の回路図である。It is a circuit diagram of the coil component shown by FIG. 図１に示されるケースの概略斜視図（上側が底面）である。It is a schematic perspective view (upper side is a bottom face) of the case shown by FIG. 図１に示されるインダクタンス素子（送信側パルストランス等）の環状コアの形状説明図である。It is shape explanatory drawing of the annular core of the inductance element (transmission side pulse transformer etc.) shown by FIG. 図１のV-V'断面図である。It is VV 'sectional drawing of FIG. 実施例に係るコイル部品の形状説明図であり、（Ａ）は底面図、（Ｂ）は同底面図のB-B'断面図である。It is shape explanatory drawing of the coil components which concern on an Example, (A) is a bottom view, (B) is BB 'sectional drawing of the bottom view.

符号の説明Explanation of symbols

１０ ケース
１２Ａ〜１２Ｄ 側壁部
１４ 天井部
１６Ａ〜１６Ｄ 仕切り部
２１ 第１室
２２ 第２室
２６ 連通路
５２Ｔ 送信側パルストランス
５２Ｒ 受信側パルストランス
５４Ｔ 送信側コモンモードチョークコイル
５４Ｒ 受信側コモンモードチョークコイル
１００ コイル部品 DESCRIPTION OF SYMBOLS 10 Case 12A-12D Side wall part 14 Ceiling part 16A-16D Partition part 21 1st chamber 22 2nd chamber 26 Communication path 52T Transmission side pulse transformer 52R Reception side pulse transformer 54T Transmission side common mode choke coil 54R Reception side common mode choke coil 100 Coil parts

Claims (8)

側壁部と、前記側壁部の上方を覆う天井部とを有し、前記天井部内面に形成された仕切り部によって内部が第１室及び第２室に区画されたケースと、
前記第１室及び前記第２室にそれぞれ収容され、前記天井部内面に接着剤で固定されたインダクタンス素子とを備え、
各々のインダクタンス素子は、環状コアに巻線を施してなるものであり、
前記第１室及び前記第２室は、前記ケース長手方向の異なる位置にあり、
前記第１室と前記第２室との境界の一部において前記天井部内面が露出して前記第１室と前記第２室との連通路を成し、かつ前記仕切り部が前記インダクタンス素子を位置決めし、
前記仕切り部は、前記ケース長手方向の異なる位置に分かれて存在し、一方の仕切り部が前記第１室に面し、他方の仕切り部が前記第２室に面し、
前記一方の仕切り部と前記他方の仕切り部との間の空間領域に電子部品が存在しない、コイル部品。 A case having a side wall and a ceiling that covers the upper side of the side wall, the interior of the case being partitioned into a first chamber and a second chamber by a partition formed on the inner surface of the ceiling;
An inductance element accommodated in each of the first chamber and the second chamber and fixed to the inner surface of the ceiling portion with an adhesive;
Each inductance element is formed by winding a ring core.
The first chamber and the second chamber are at different positions in the case longitudinal direction,
The inner surface of the ceiling portion is exposed at a part of the boundary between the first chamber and the second chamber to form a communication path between the first chamber and the second chamber , and the partition portion includes the inductance element. Positioning,
The partition portion is present at different positions in the case longitudinal direction, one partition portion faces the first chamber, and the other partition portion faces the second chamber,
A coil component in which no electronic component exists in a space region between the one partition and the other partition . 請求項１に記載のコイル部品において、前記仕切り部の各々は、向かい合う前記側壁部の各々から前記天井部に跨って形成されている、コイル部品。 2. The coil component according to claim 1, wherein each of the partition portions is formed so as to straddle the ceiling portion from each of the side wall portions facing each other. 請求項１又は２に記載のコイル部品において、前記連通路が前記第１室と前記第２室との境界の略中央に形成されている、コイル部品。 3. The coil component according to claim 1, wherein the communication path is formed at a substantially center of a boundary between the first chamber and the second chamber. 請求項１から３のいずれかに記載のコイル部品において、前記仕切り部の角部が面取りされている、コイル部品。 The coil component according to any one of claims 1 to 3 , wherein a corner portion of the partition portion is chamfered. 請求項１から４のいずれかに記載のコイル部品において、
前記仕切り部は前記ケース短手方向と略平行であり、
前記インダクタンス素子は、それぞれ環状コアに巻線を施してなるパルストランス及びコモンモードチョークコイルの組であり、
前記パルストランス及び前記コモンモードチョークコイルは、前記環状コアが前記ケース短手方向と略平行になるように前記ケース長手方向に並べて縦置きされ、前記コモンモードチョークコイルが前記パルストランスよりも前記仕切り部側に位置している、コイル部品。 In the coil component according to any one of claims 1 to 4 ,
The partition portion is substantially parallel to the lateral direction of the case;
The inductance element is a set of a pulse transformer and a common mode choke coil each formed by winding a ring core.
The pulse transformer and the common mode choke coil are vertically arranged side by side in the longitudinal direction of the case so that the annular core is substantially parallel to the lateral direction of the case, and the common mode choke coil is separated from the pulse transformer by the partition. Coil parts located on the part side. 請求項１から５のいずれかに記載のコイル部品において、前記連通路の幅ａは、前記第１室と前記第２室との境界の長さｂに対して ｂ／５≦ａ≦２ｂ／３ の範囲内である、コイル部品。 In the coil component according to any of claims 1 to 5, the width a of the communication passage, the first chamber and the length of the boundary between the second chamber b against b / 5 ≦ a ≦ 2b / 3. Coil components that are within the range of 3. 請求項１から６のいずれかに記載のコイル部品において、前記仕切り部は、前記天井部からの高さｈが前記側壁部の高さｇに対して ｇ／３≦ｈ≦２ｇ／３ の範囲内である、コイル部品。 The coil component according to any one of claims 1 to 6 , wherein in the partition portion, a height h from the ceiling portion is in a range of g / 3 ≦ h ≦ 2g / 3 with respect to a height g of the side wall portion. Inside is a coil part. 側壁部と、前記側壁部の上方を覆う天井部とを有し、前記天井部内面に形成された仕切り部によって内部が第１室及び第２室に区画され、前記第１室と前記第２室との境界の一部において前記天井部が露出して前記第１室と前記第２室との連通路を成しているケースを用い、コイル部品を製造する方法であり、
前記第１室及び前記第２室は、前記ケース長手方向の異なる位置にあり、
前記仕切り部は、前記ケース長手方向の異なる位置に分かれて存在し、一方の仕切り部が前記第１室に面し、他方の仕切り部が前記第２室に面し、本方法は、
前記第１室及び前記第２室の各々に、環状コアに巻線を施してなるインダクタンス素子を、前記仕切り部によって位置決めして収容する工程と、
収容した前記インダクタンス素子を接着剤で前記天井部内面に固定する工程とを含み、
前記一方の仕切り部と前記他方の仕切り部との間の空間領域に電子部品を配置しない、コイル部品の製造方法。 The first chamber and the second chamber have a side wall portion and a ceiling portion covering the upper side of the side wall portion, and the interior is partitioned into a first chamber and a second chamber by a partition portion formed on the inner surface of the ceiling portion. A method of manufacturing a coil component using a case in which the ceiling portion is exposed at a part of a boundary with a chamber to form a communication path between the first chamber and the second chamber ;
The first chamber and the second chamber are at different positions in the case longitudinal direction,
The partition portion is present at different positions in the case longitudinal direction, one partition portion faces the first chamber, the other partition portion faces the second chamber, and the method includes:
A step of positioning and accommodating an inductance element formed by winding a ring core in each of the first chamber and the second chamber by the partition ;
The accommodating the said inductance element seen including a step of fixing to the ceiling portion inner surface with adhesive,
The manufacturing method of a coil component which does not arrange | position electronic components in the space area | region between said one partition part and said other partition part .
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