JP2676670B2 - Coupling member for planar core - Google Patents
Coupling member for planar coreInfo
- Publication number
- JP2676670B2 JP2676670B2 JP2909493A JP2909493A JP2676670B2 JP 2676670 B2 JP2676670 B2 JP 2676670B2 JP 2909493 A JP2909493 A JP 2909493A JP 2909493 A JP2909493 A JP 2909493A JP 2676670 B2 JP2676670 B2 JP 2676670B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- hole
- coupling member
- planar core
- planar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電源用あるいは高周波
用のトランスやインダクターに用いられるプレーナーコ
ア用結合部材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling member for a planar core used in a transformer or an inductor for a power source or a high frequency.
【０００２】[0002]
【従来の技術】通常のトランスは、コアとしてＥＩコア
やＥＥコアが使用され、コイルを実装した後、ばね性を
有する結合部材で締付固定していた(例えば、実開昭63
−16412号公報、実開昭61−12211号公報等参照)。2. Description of the Related Art In an ordinary transformer, an EI core or an EE core is used as a core, and after a coil is mounted, it is fastened and fixed by a coupling member having a spring property (for example, the actual open sho 63
-16412, Japanese Utility Model Laid-Open No. 61-12211, etc.).
【０００３】一方、スイッチング電源等においては、ス
イッチング周波数の高周波化と共にその高周波領域での
損失が少なく、かつ大電力で動作可能なものが要求され
てきている。On the other hand, for switching power supplies and the like, there has been a demand for a switching power supply which has a high switching frequency and a small loss in the high frequency region and which can be operated with a large electric power.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
ＥＩコアやＥＥコアを使用したものは、コイルのむき出
しになった部分ができて漏洩磁束が発生し、また、コア
においても、磁気回路的に損失を有するものであった。However, in the conventional EI core or the one using the EE core, an exposed portion of the coil is formed to generate a leakage magnetic flux, and the core also has a magnetic circuit. It had a loss.
【０００５】これに対し、例えば、特開平４−5808号公
報に見られるように、いわゆるプレーナー型トランスが
提案されているが、コイル実装の簡便さ等のために、フ
ェライトコアを２分割する必要があり、そのためこの突
合せ部に生じる漏洩磁束を抑えることや、突合せたコア
を密に結合固定するための機械的結合部材が必要にな
る。On the other hand, a so-called planar type transformer has been proposed, for example, as disclosed in Japanese Patent Laid-Open No. 4-5808, but it is necessary to divide the ferrite core into two for the convenience of coil mounting. Therefore, it is necessary to provide a mechanical coupling member for suppressing the leakage magnetic flux generated at the butted portion and for tightly coupling and fixing the butted core.
【０００６】本発明は、上記従来の問題点を解決しよう
とするもので、高周波領域において大電力で動作可能な
トランス及びインダクターを実現するために、漏洩磁束
を減少させ、かつ確実な締付固定を得るようにしたプレ
ーナーコア用結合部材を提供することを目的とする。The present invention is intended to solve the above-mentioned conventional problems, and in order to realize a transformer and an inductor capable of operating with a large electric power in a high frequency region, the leakage magnetic flux is reduced and the fastening is securely fixed. It is an object of the present invention to provide a coupling member for a planar core, which is obtained.
【０００７】[0007]
【課題を解決するための手段】この目的を達成するため
に、本発明は、ばね部を設けた導電性金属からなり、つ
ぼ型コアの中心磁心部に貫通孔を有する一対の突合せコ
アからなるプレーナーコアにコイルを装填し、前記ばね
部の復元力を利用してコアの両端から締め付け固定する
結合部材であって、貫通孔内壁の軸方向の少なくとも一
部又は前記貫通孔の少なくとも一方の端縁外側近傍に、
周方向に沿って連続する環状の金属部を有することを特
徴とするものである。In order to achieve this object, the present invention comprises a pair of butt cores made of a conductive metal provided with a spring portion and having a through hole in the central magnetic core portion of the pot core. A coupling member in which a coil is loaded in a planar core and is clamped and fixed from both ends of the core by utilizing the restoring force of the spring portion, and at least a part of the inner wall of the through hole in the axial direction or at least one end of the through hole Near the outside of the rim,
It is characterized by having an annular metal portion which is continuous along the circumferential direction.
【０００８】そして、そのプレーナーコア用結合部材
は、コアの両端から貫通孔を介して互いに係合部を突き
合わせ、相対的にねじることにより係合させる一対の部
材から構成されている。The planar core coupling member is composed of a pair of members that are engaged with each other through the through holes from both ends of the core, and are engaged with each other by relatively twisting.
【０００９】[0009]
【作用】上記構成によれば、簡単な構成で、プレーナー
コアを確実に結合することができると共に、貫通孔の内
壁の一部、あるいは貫通孔端縁外側近傍に、周方向に沿
って設けた連続する環状の金属部にうず電流が流れ、こ
れが漏洩磁束を打ち消すように作用する。According to the above structure, the planar core can be securely coupled with a simple structure, and the planar core is provided in a part of the inner wall of the through hole or near the outside of the end edge of the through hole along the circumferential direction. An eddy current flows through the continuous annular metal part, and this acts so as to cancel the leakage magnetic flux.
【００１０】[0010]
【実施例】以下、図面を参照して実施例を詳細に説明す
る。図１は本発明の第１の実施例を示したもので、１は
ばね部を有する導電性金属からなる結合部材、２は、薄
型のつぼ型コアの中心磁心部に貫通孔４を有する、いわ
ゆるプレーナーコアであり、上側コア２aと下側コア２b
の一対のフェライトコアからなっていて、内部にコイル
３を装填した後開口部を突合せて結合部材１で締付固定
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below in detail with reference to the drawings. FIG. 1 shows a first embodiment of the present invention, in which 1 is a coupling member made of a conductive metal having a spring portion, 2 is a thin vase-shaped core having a through hole 4 in the central magnetic core portion, A so-called planar core, which is an upper core 2a and a lower core 2b.
It is composed of a pair of ferrite cores, and after the coil 3 is loaded inside, the openings are butted and fixed by the coupling member 1.
【００１１】なお、コイル３は一例を示したもので、銅
箔を張った基板をエッチングして形成した薄膜コイルか
らなる一次巻線３aと絶縁シート３bを挾んで積層した薄
膜コイルからなる二次巻線３cとで形成されている。The coil 3 is an example, and the coil 3 is composed of a primary winding 3a formed by etching a copper foil-clad substrate and a secondary winding formed by laminating an insulating sheet 3b. It is formed by the winding 3c.
【００１２】図２は、結合部材１を詳細に示したもの
で、一対の部材１a及び１bからなっており、部材１a
は、コア２の貫通孔４の一部の内壁に沿って連続する環
状の胴部５を有し、又、胴部５の端部にはやはり周方向
に沿って連続する鍔６を有している。部材１aの他方の
端部には十字に形成された係合部７が設けられている。
本発明に係る結合部材は、上記のように、コアの貫通孔
内壁の軸方向の少なくとも一部、又は貫通孔の少なくと
も一方の端縁外側近傍に、周方向に沿って連続する環状
の金属部を有することを特徴とするものである。FIG. 2 shows the connecting member 1 in detail, which comprises a pair of members 1a and 1b.
Has an annular body portion 5 which is continuous along the inner wall of a part of the through hole 4 of the core 2, and also has a flange 6 which is also continuous in the circumferential direction at the end portion of the body portion 5. ing. A cross-shaped engaging portion 7 is provided at the other end of the member 1a.
As described above, the coupling member according to the present invention has at least a part in the axial direction of the inner wall of the through hole of the core, or at least the outer periphery of at least one end edge of the through hole, and an annular metal portion that is continuous along the circumferential direction. It is characterized by having.
【００１３】一方、部材１bは、部材１aの係合部７が係
合する係合受け部８が設けられた平板からなっており、
係合部７と係合受け部８とを合わせて各部材を矢印方向
に互いにねじることにより係合する。On the other hand, the member 1b is a flat plate provided with an engagement receiving portion 8 with which the engaging portion 7 of the member 1a is engaged,
The engaging portion 7 and the engaging receiving portion 8 are put together and the respective members are twisted in the direction of the arrow to engage with each other.
【００１４】この場合図１に示したように、部材１aを
コア２の貫通孔４に通し、治具等を使って係合部７を貫
通孔の外側まで突き出すようにすれば、ばね部９を伸ば
した状態で係合部７と係合受け部８とを係合させること
ができる。この係合状態では、ばね部９の復元力により
常に引っ張り力が働くため、この引っ張り力によりコア
を結合する。In this case, as shown in FIG. 1, if the member 1a is passed through the through hole 4 of the core 2 and the engaging portion 7 is projected to the outside of the through hole using a jig or the like, the spring portion 9 is formed. The engaging portion 7 and the engaging receiving portion 8 can be engaged with each other in a stretched state. In this engaged state, a restoring force of the spring portion 9 always exerts a pulling force, so that the pulling force joins the cores.
【００１５】このように構成された本実施例では、簡単
な構成で、プレーナーコア２を締付固定することができ
ると共に、図３に示したように、実働中のトランス内の
磁束Φの流れに対し、それを打ち消すように結合部材の
胴部５や鍔６にうず電流ｉ2が流れ、これが漏洩磁束φ
を減少させるように作用する。なお、10はコイルの巻
線、ｉ1はそのコイルに流れる電流である。In this embodiment thus constructed, the planar core 2 can be tightened and fixed with a simple structure, and as shown in FIG. 3, the flow of the magnetic flux Φ in the transformer during actual operation. On the other hand, the eddy current i 2 flows through the body 5 and the collar 6 of the coupling member so as to cancel it, and this causes the leakage magnetic flux φ.
Acts to reduce. Note that 10 is the winding of the coil, and i 1 is the current flowing through the coil.
【００１６】図10は、本発明のプレーナーコアを結合部
材により結合した場合と、プレーナーコアのみの場合の
周波数に対する漏洩磁束の関係を示したものである。FIG. 10 shows the relationship between the leakage magnetic flux and the frequency when the planar core of the present invention is coupled by a coupling member and when the planar core is used alone.
【００１７】また図11は、従来のＥＩ，ＥＥコアの場合
と、本発明によるプレーナーコアを結合部材で結合した
場合の周波数に対する漏洩磁束の関係を示したものであ
る。これらの特性比較から、本発明によって漏洩磁束が
大幅に減少することが判る。FIG. 11 shows the relationship between the leakage magnetic flux and the frequency in the case of the conventional EI and EE cores and in the case where the planar core according to the present invention is coupled by the coupling member. From the comparison of these characteristics, it can be seen that the present invention significantly reduces the leakage magnetic flux.
【００１８】図４は、本発明の第２の実施例を示したも
ので、結合部材11の一方の部材11ａには、図５にも示し
たように、一端にばね部12、他端に係合爪13が設けられ
ており、また、他方の部材11ｂには、係合爪13が係合す
る孔14が設けられている。この場合も、結合部材11に
は、コア２の貫通孔４の一部の内壁に沿って連続する環
状の胴部15が設けられている。FIG. 4 shows a second embodiment of the present invention. As shown in FIG. 5, one member 11a of the connecting member 11 has a spring portion 12 at one end and a spring portion 12 at the other end. An engaging claw 13 is provided, and a hole 14 with which the engaging claw 13 engages is provided in the other member 11b. Also in this case, the coupling member 11 is provided with an annular body portion 15 which is continuous along the inner wall of a part of the through hole 4 of the core 2.
【００１９】コア２を結合する場合は、プレーナーコア
２の貫通孔４に部材11ａを挿通し、ばね部12を変形させ
るように押圧して係合爪13を貫通孔から突出させ、部材
11ｂの孔14に係止させる。そこで、ばね部12の復元力は
常にコアを締め付けるように作用する。When the core 2 is to be joined, the member 11a is inserted into the through hole 4 of the planar core 2, and the spring portion 12 is pressed so as to be deformed so that the engaging claw 13 projects from the through hole.
It is locked in the hole 14 of 11b. Therefore, the restoring force of the spring portion 12 always acts to tighten the core.
【００２０】本実施例の場合も、図１の実施例と同様の
作用効果を有する。Also in the case of this embodiment, the same operational effect as that of the embodiment of FIG. 1 is obtained.
【００２１】図６は、本発明の第３の実施例の結合部材
16を示したもので、それぞればね部17を有する同一形状
の一対の部材16ａと16ｂとを貫通孔４の軸方向中央部で
互いに係合させ、コアを締付固定している。FIG. 6 shows a connecting member according to the third embodiment of the present invention.
16, a pair of members 16a and 16b having the same shape and each having a spring portion 17 are engaged with each other at the axial center portion of the through hole 4 and the core is clamped and fixed.
【００２２】図７(a)は部材の一つを詳細に示し、ま
た、図７(b)は係合部を拡大して示したものである。部
材16ａと16ｂの係合に際しては、貫通孔４の両端から各
部材を挿入し、治具等を用いてばね部17を伸ばした状態
で係合部20を合わせ、相対的にねじることにより係合さ
せる。FIG. 7 (a) shows one of the members in detail, and FIG. 7 (b) is an enlarged view of the engaging portion. When engaging the members 16a and 16b, each member is inserted from both ends of the through hole 4, and the engaging portions 20 are aligned with the spring portion 17 extended using a jig or the like, and the members are relatively twisted. To combine.
【００２３】本実施例の場合も、鍔18や胴部19を備えて
おり、第１の実施例と同様の作用効果がある。In the case of this embodiment as well, the collar 18 and the body portion 19 are provided, and the same operational effects as those of the first embodiment are obtained.
【００２４】図８は、本発明の第４の実施例を示したも
のである。結合部材21の一方の部材21ａは、図９にも示
したように、鍔22、胴部23、更に胴部から延びたスパイ
ラル状ばね部24、及びその先端に設けられた係合片25か
らなている。他方の部材21ｂは係合片25が係合する係合
受け部26を有する。FIG. 8 shows a fourth embodiment of the present invention. As shown in FIG. 9, one member 21a of the coupling member 21 includes a collar 22, a body portion 23, a spiral spring portion 24 extending from the body portion, and an engagement piece 25 provided at the tip thereof. It is The other member 21b has an engagement receiving portion 26 with which the engagement piece 25 engages.
【００２５】コア２の結合に際しては、貫通孔４の一端
からに挿入された一方の部材21ａのばね部24を引っ張っ
て係合片25が孔の他端から外側まで出るように引き伸ば
し、係合片25と他方の部材21ｂの係合受け部26とを係止
させる。そして、ばね部24の復元力により、他方の部材
21ｂが貫通孔４の他端に嵌め込まれ、コア２を締付結合
する。When the core 2 is coupled, the spring portion 24 of the one member 21a inserted from one end of the through hole 4 is pulled so that the engaging piece 25 is extended from the other end of the hole to the outside and engaged. The piece 25 and the engagement receiving portion 26 of the other member 21b are locked. Then, due to the restoring force of the spring portion 24, the other member
21b is fitted into the other end of the through hole 4, and the core 2 is fastened and coupled.
【００２６】本実施例も第１の実施例と同様の作用効果
がある。This embodiment also has the same effects as the first embodiment.
【００２７】なお、係合片と係合受け部の形状、構造は
第４の実施例のものに限定されず、種々のものが考えら
れる。また、結合部材を軟磁性金属で構成すると、磁気
シールド作用を持たせることができ、かつフェライトコ
アから出る低い周波数の漏洩磁束に対して、通路として
の機能も持つ。The shapes and structures of the engaging piece and the engaging receiving portion are not limited to those of the fourth embodiment, and various kinds can be considered. Further, when the coupling member is made of a soft magnetic metal, it can have a magnetic shield function, and also has a function as a passage for the low frequency leakage magnetic flux emitted from the ferrite core.
【００２８】[0028]
【発明の効果】以上説明したように、本発明によれば、
簡単な構成で、プレーナーコアを確実に結合することが
でき、さらに、貫通孔の内壁の一部、あるいは貫通孔端
縁外側近傍の周方向に沿って設けた連続する金属部に流
れるうず電流が、漏洩磁束を打ち消すように作用し、ノ
イズ対策の上できわめて効果的である。As described above, according to the present invention,
With a simple structure, the planar core can be securely coupled, and further, an eddy current flowing through a part of the inner wall of the through hole or a continuous metal part provided along the circumferential direction near the outer edge of the through hole is generated. , Acts to cancel the leakage magnetic flux, and is extremely effective as a noise countermeasure.
【図１】本発明の第１の実施例の断面図である。FIG. 1 is a sectional view of a first embodiment of the present invention.
【図２】同実施例の結合部材の詳細を示す斜視図であ
る。FIG. 2 is a perspective view showing details of a coupling member of the embodiment.
【図３】貫通孔内壁等の周方向に沿って設けた連続する
金属部の作用を示す図である。FIG. 3 is a view showing an operation of a continuous metal portion provided along a circumferential direction of an inner wall of a through hole or the like.
【図４】本発明の第２の実施例の断面図ある。FIG. 4 is a sectional view of a second embodiment of the present invention.
【図５】同結合部材の詳細を示す図である。FIG. 5 is a view showing details of the coupling member.
【図６】本発明の第３の実施例の断面図ある。FIG. 6 is a sectional view of a third embodiment of the present invention.
【図７】同結合部材の詳細を示す図である。FIG. 7 is a view showing details of the coupling member.
【図８】本発明の第４の実施例の断面図ある。FIG. 8 is a sectional view of a fourth embodiment of the present invention.
【図９】同結合部材の詳細を示す図である。FIG. 9 is a view showing details of the coupling member.
【図１０】本発明による、周波数に対する漏洩磁束の関
係を結合部材なしの場合と比較して示した図である。FIG. 10 is a diagram showing the relationship between the leakage magnetic flux and the frequency according to the present invention in comparison with the case without a coupling member.
【図１１】本発明による、周波数に対する漏洩磁束の関
係を従来コアの場合と比較して示した図である。FIG. 11 is a diagram showing the relationship between the leakage magnetic flux and the frequency according to the present invention in comparison with the case of the conventional core.
１,11,16,21 … 結合部材、 ２ … プレーナーコア、
３ … コイル、 ４ …貫通孔、 ５,15,19,23 … 胴部、
６,18,22 … 鍔、 ９,12,17,24 … ばね部。1,11,16,21… Coupling member, 2… Planar core,
3 ... Coil, 4 ... Through hole, 5,15,19,23 ... Body,
6,18,22 ... Tsuba, 9,12,17,24 ... Spring part.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭58−8928（ＪＰ，Ｕ) 実開 平６−9110（ＪＰ，Ｕ) 実開 平２−35413（ＪＰ，Ｕ) 実開 昭58−182410（ＪＰ，Ｕ) 実公 昭36−6145（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 58-8928 (JP, U) Rikai Hei 6-9110 (JP, U) Rikai 2-35413 (JP, U) Rikai Sho 58- 182410 (JP, U) Actual public Sho 36-6145 (JP, Y1)
Claims (4)
ぼ型コアの中心磁心部に貫通孔を有する一対の突合せコ
アからなるプレーナーコアにコイルを装填し、前記ばね
部の復元力を利用してコアの両端から締め付け固定する
結合部材であって、前記貫通孔内壁の軸方向の少なくと
も一部又は前記貫通孔の少なくとも一方の端縁外側近傍
に、周方向に沿って連続する環状の金属部を有すること
を特徴とするプレーナーコア用結合部材。1. A coil is loaded in a planar core made of a conductive metal provided with a spring portion and comprising a pair of butt cores having a through hole in a central magnetic core portion of a pot-shaped core, and a restoring force of the spring portion is utilized. Is a coupling member that is fastened and fixed from both ends of the core, and is an annular metal continuous along the circumferential direction in the vicinity of at least a part of the inner wall of the through hole in the axial direction or the outer periphery of at least one end of the through hole. A connecting member for a planar core, which has a portion.
合部を突き合わせ、相対的にねじることにより係合させ
る一対の部材からなることを特徴とする請求項１記載の
プレーナーコア用結合部材。2. The coupling member for a planar core according to claim 1, wherein the core comprises a pair of members that are engaged with each other through the through holes from both ends of the core and are engaged with each other by relatively twisting. .
掛ける引っ掛け部若しくは鍔と貫通孔内壁の周方向に沿
って連続する環状の胴部とその胴部の端部から延びるス
パイラル状ばね部とからなり、他方の部材は貫通孔の他
方の端縁に引っ掛ける鍔と前記ばね部先端に設けた係合
部が係合する係合受け部とを備えた平板とからなること
を特徴とする請求項２記載のプレーナーコア用結合部
材。3. One of the members is a hook portion or a collar that is hooked on one edge of the through hole, and an annular body portion that is continuous along the circumferential direction of the inner wall of the through hole and a spiral spring extending from the end portion of the body portion. And the other member is a flat plate having a brim hooked on the other end of the through hole and an engagement receiving portion with which the engaging portion provided at the tip of the spring portion engages. The coupling member for a planar core according to claim 2.
属からなることを特徴とする請求項１記載のプレーナー
コア用結合部材。4. The coupling member for a planar core according to claim 1, wherein the conductive metal provided with the spring portion is made of a soft magnetic metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2909493A JP2676670B2 (en) | 1993-02-18 | 1993-02-18 | Coupling member for planar core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2909493A JP2676670B2 (en) | 1993-02-18 | 1993-02-18 | Coupling member for planar core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06244036A JPH06244036A (en) | 1994-09-02 |
| JP2676670B2 true JP2676670B2 (en) | 1997-11-17 |
Family
ID=12266772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2909493A Expired - Fee Related JP2676670B2 (en) | 1993-02-18 | 1993-02-18 | Coupling member for planar core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2676670B2 (en) |
-
1993
- 1993-02-18 JP JP2909493A patent/JP2676670B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06244036A (en) | 1994-09-02 |
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| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| LAPS | Cancellation because of no payment of annual fees |