JP3501633B2 - Electromagnetic device - Google Patents
Electromagnetic deviceInfo
- Publication number
- JP3501633B2 JP3501633B2 JP24378697A JP24378697A JP3501633B2 JP 3501633 B2 JP3501633 B2 JP 3501633B2 JP 24378697 A JP24378697 A JP 24378697A JP 24378697 A JP24378697 A JP 24378697A JP 3501633 B2 JP3501633 B2 JP 3501633B2
- Authority
- JP
- Japan
- Prior art keywords
- columnar
- leg
- coil
- columnar portion
- coil bobbin
- 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
Landscapes
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Description
【0001】[0001]
【発明の属する技術分野】この発明は、フェライトコア
を有する電磁装置に関するものである。TECHNICAL FIELD The present invention relates to a ferrite core.
The present invention relates to an electromagnetic device having .
【0002】[0002]
【従来の技術】従来例を図4ないし図6に示す。すなわ
ち、このフェライトコアは、コイルボビン70の筒部7
1に挿入される柱状部72と、この柱状部72の一端か
ら柱状部72に略直交する方向へ突出する接続部73
と、この接続部73の先端から柱状部72と平行かつ同
方向に延出する脚部74とを備えている。コイルボビン
70は筒部71の両端のフランジから径方向の外方に延
出した延出部78を有し、延出部78の先端に筒部71
と平行な溝形の保持部77を有する。75はコイルボビ
ン70の筒部71の外周に巻装したコイル、76は筒部
71の一端部に形成した1次コイルを巻装した1次ボビ
ンである。2. Description of the Related Art Conventional examples are shown in FIGS. That is, this ferrite core is used for the cylindrical portion 7 of the coil bobbin 70.
1 and a connecting portion 73 protruding from one end of the columnar portion 72 in a direction substantially orthogonal to the columnar portion 72.
And a leg portion 74 extending in the same direction as the columnar portion 72 from the tip of the connecting portion 73. The coil bobbin 70 has an extending portion 78 that extends outward in the radial direction from the flanges at both ends of the cylindrical portion 71, and the cylindrical portion 71 is provided at the tip of the extending portion 78.
It has a groove-shaped holding portion 77 parallel to. Reference numeral 75 is a coil wound around the outer circumference of the tubular portion 71 of the coil bobbin 70, and 76 is a primary bobbin wound with a primary coil formed at one end of the tubular portion 71.
【0003】コイルボビン70の保持部77にそれぞれ
一対のフェライトコアの脚部74を圧入嵌合することに
より、柱状部72が筒部71に略同心に遊嵌され保持さ
れる。また脚部74の端面同士がギャップを介して相対
向する。このフェライトコアは、図6に示すように圧粉
成形により製造されるが、成形後にフェライトコアの外
側Aから冷却が始まる。その際に収縮が起こり、接続部
73および脚部74に外側Aに引っ張る収縮力P1 〜P
3 が発生するが、肉厚の一番厚い部分であるところの脚
部74と接続部73のコーナ部の冷却が最も遅れること
により、接続部73と脚部74の内側Bのコーナ部が収
縮力P2 により矢印の方向に引っ張られるため、脚部7
4の先端が柱状部72に接近するように脚部74が倒
れ、図5に示すように柱状部72と脚部74とが平行で
なくなる。By press-fitting a pair of ferrite core leg portions 74 into the holding portions 77 of the coil bobbin 70, the columnar portion 72 is loosely fitted and held in the tubular portion 71 substantially concentrically. In addition, the end surfaces of the leg portions 74 face each other through the gap. This ferrite core is manufactured by powder compaction as shown in FIG. 6, but cooling starts from the outside A of the ferrite core after molding. At that time, contraction occurs, and the contracting forces P 1 to P pulling the connecting portion 73 and the leg portion 74 to the outside A.
3 occurs, but the cooling of the corner portion of the leg portion 74 and the connecting portion 73, which is the thickest portion, is delayed most, so that the corner portion of the inner portion B of the connecting portion 73 and the leg portion 74 contracts. The leg portion 7 is pulled by the force P 2 in the direction of the arrow.
The leg portion 74 falls so that the tip of the column 4 approaches the columnar portion 72, and the columnar portion 72 and the leg portion 74 are not parallel to each other as shown in FIG.
【0004】[0004]
【発明が解決しようとする課題】脚部74が倒れると、
コイルボビン70への嵌合が難しくなり、組立の効率が
悪くなったり、嵌合できずに不良品となり歩留りが悪く
なった。さらに脚部74によるコイルボビン70との嵌
合のとき、脚部74の倒れにより柱状部72とコイルボ
ビン70の筒部71が偏心し、コイル75との絶縁距離
にばらつきが生じ、品質が安定しなかった。When the leg portion 74 falls down,
Fitting into the coil bobbin 70 became difficult, assembly efficiency deteriorated, and fitting failed, resulting in a defective product and poor yield. Further, when the leg portion 74 is fitted to the coil bobbin 70, the column portion 72 and the cylinder portion 71 of the coil bobbin 70 are eccentric due to the fall of the leg portion 74, and the insulation distance between the coil 75 and the coil 75 varies, resulting in unstable quality. It was
【0005】 このため、フェライトコアを試作し、倒
れ寸法を測定して金型を修正し、倒れを抑制したフェラ
イトコアを完成するというステップが必要となり、開発
期間が長期化しコストアップになった。したがって、こ
の発明の目的は、脚部の成形による倒れを防止すること
ができる電磁装置を提供することである。For this reason, it is necessary to make a prototype of a ferrite core, measure the collapse dimension, correct the mold, and complete the ferrite core in which the collapse is suppressed, which lengthens the development period and increases the cost. Therefore, an object of the present invention is to provide an electromagnetic device that can prevent the legs from falling due to molding.
【0006】[0006]
【課題を解決するための手段】請求項1記載の電磁装置
は、コイルボビンとフェライトコアとコイルとを備え、
前記フェライトコアが前記コイルボビンに挿入される柱
状部と、この柱状部の一端から前記柱状部に略直交する
方向へ突出する接続部と、この接続部の先端から前記柱
状部と平行かつ同方向に延出する脚部とを備え、前記接
続部と前記脚部とのなす角度を維持する補強部を設けた
ものであり、前記コイルボビンが前記柱状部を遊嵌する
筒部を有し、前記筒部の両端に前記柱状部の端部外周を
被覆するように軸方向に延出するフランジを有し、前記
フランジより径方向の外方に延出して前記接続部の側面
を被覆する延出部を有し、前記延出部より前記軸方向の
内方に延びて脚部を圧入嵌合する溝形の保持部を有し、
前記フランジ間の前記筒部の外周に前記コイルを巻装し
たことを特徴とするものである。An electromagnetic device according to claim 1 is provided with a coil bobbin, a ferrite core and a coil.
A columnar portion into which the ferrite core is inserted into the coil bobbin, a connecting portion protruding from one end of the columnar portion in a direction substantially orthogonal to the columnar portion, and a tip end of the connecting portion in parallel with and in the same direction as the columnar portion. And a reinforcing portion for maintaining an angle formed by the connecting portion and the leg portion, wherein the coil bobbin loosely fits the columnar portion.
A tubular portion, and the outer circumference of the end portion of the columnar portion is provided at both ends of the tubular portion.
Having a flange extending axially to cover,
Sides of the connection part that extend radially outward from the flange
Has an extending portion that covers, in the axial direction from the extending portion.
It has a groove-shaped holding part that extends inward and press-fits the legs.
Winding the coil around the outer circumference of the tubular portion between the flanges
It is characterized in that the.
【0007】 請求項1記載の電磁装置によれば、接続
部と脚部のなす角度を維持する補強部を設けることによ
り、脚部の成形による倒れを防止することが可能とな
る。このため、コイルボビンへの嵌合が容易となり組立
効率と歩留りが向上する。さらに柱状部を遊嵌させる筒
部を有し脚部を保持する保持部を有するコイルボビンに
このフェライトコアを適用する場合、脚部が保持部に保
持されるときに脚部が柱状部側に倒れることなく柱状部
と平行に維持されているので、柱状部とコイルボビンの
筒部が偏心することなく遊嵌でき、コイルとの絶縁距離
を一様にでき、安定した品質の電磁装置を提供できる。According to the electromagnetic device of the first aspect, by providing the reinforcing portion that maintains the angle formed by the connecting portion and the leg portion, it is possible to prevent the leg portion from falling due to molding. For this reason, fitting to the coil bobbin is facilitated, and assembly efficiency and yield are improved. Further, when this ferrite core is applied to a coil bobbin having a holding portion for holding the leg portion and a tubular portion for loosely fitting the column portion, when the leg portion is held by the holding portion, the leg portion falls to the column portion side. Since it is maintained in parallel with the columnar portion, the columnar portion and the tubular portion of the coil bobbin can be loosely fitted without eccentricity, the insulation distance from the coil can be made uniform, and an electromagnetic device of stable quality can be provided.
【0008】 請求項2記載の電磁装置は、請求項1に
おいて、前記補強部を前記脚部の前記柱状部に対向する
面の両側に前記柱状部と平行に設けた一対の突条とした
ものである。請求項2記載の電磁装置によれば、請求項
1と同様な効果のほか、脚部の倒れをより一層確実に防
止できるとともに、一対の突条を脚部の両側に設けるこ
とにより厚さ方向が大きくなるので断面積を変えること
なく幅方向を短縮することができるとともに、単一の突
条よりもコイルに接近できるので、安定した品質でより
一層小型化した電磁装置が可能となる。An electromagnetic device according to a second aspect is the electromagnetic device according to the first aspect, wherein the reinforcing portion is a pair of protrusions provided on both sides of a surface of the leg portion facing the columnar portion in parallel with the columnar portion. Is. According to the electromagnetic device of the second aspect, in addition to the same effect as the first aspect, it is possible to more surely prevent the leg portion from collapsing, and by providing the pair of protrusions on both sides of the leg portion, a thickness direction is obtained. Since the width is increased, the width direction can be shortened without changing the cross-sectional area, and the coil can be approached rather than a single ridge, so that an electromagnetic device of stable quality and further downsized can be realized.
【0009】[0009]
【発明の実施の形態】この発明の第1の実施の形態を適
用した電磁装置を図1および図2により説明する。すな
わち、このフェライトコアはRU型コアを用い、柱状部
1と、接続部2と、脚部3とを有する。柱状部1はコイ
ルボビン4の筒部5に挿入されるものであり、実施の形
態では円柱状である。接続部2は、柱状部1の一端から
柱状部1に略直交する方向へ突出しており、実施の形態
は断面角形で柱状部1の後端部から径方向の外方に延び
ている。脚部3は、接続部2の先端から柱状部1と平行
かつ同方向に延出するもので、実施の形態は断面略角形
である。さらに補強部6を、接続部2と脚部3とのなす
角度を維持するために設けており、実施の形態では脚部
3の柱状部1に対向する面3aで柱状部1と平行に一対
設けた補強リブとなる突条6a,6bとし、これらを脚
部3の両側に形成し、一対の突条6a,6b間の突条部
1に対向する面3aを断面略円弧状の凹面に形成してい
る。この一対の突条6a,6bが、脚部3が倒れようと
する力に対する支えとなるので、脚部3の倒れを防ぐこ
とが可能となる。この場合、図2(b)の補強部6がな
い脚部3と比較して、図2(a)のように脚部3の厚さ
が大きくなるが、図2(a),(b)に斜線で示す脚部
3の断面積S1 ,S2 がほぼ同じになるように、幅寸法
βを図2(b)の幅寸法αよりも小さくしている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An electromagnetic device to which a first embodiment of the present invention is applied will be described with reference to FIGS. 1 and 2. That is, this ferrite core uses a RU type core and has a columnar portion 1, a connecting portion 2, and a leg portion 3. The columnar portion 1 is to be inserted into the cylindrical portion 5 of the coil bobbin 4, and has a cylindrical shape in the embodiment. The connecting portion 2 projects from one end of the columnar portion 1 in a direction substantially orthogonal to the columnar portion 1, and in the embodiment, the connecting portion 2 has a rectangular cross section and extends radially outward from the rear end portion of the columnar portion 1. The leg portion 3 extends from the tip of the connecting portion 2 in parallel with and in the same direction as the columnar portion 1, and the embodiment has a substantially rectangular cross section. Further, a reinforcing portion 6 is provided in order to maintain the angle formed between the connecting portion 2 and the leg portion 3. In the embodiment, a pair of reinforcing portions 6 are provided in parallel with the columnar portion 1 on the surface 3a of the leg portion 3 facing the columnar portion 1. Provided are ribs 6a and 6b which serve as reinforcing ribs, which are formed on both sides of the leg portion 3, and the surface 3a between the pair of ribs 6a and 6b facing the rib 1 is formed into a concave surface having a substantially arcuate cross section. Is forming. Since the pair of ridges 6a and 6b support the leg portion 3 against the force of falling, it is possible to prevent the leg portion 3 from falling. In this case, as compared with the leg portion 3 without the reinforcing portion 6 of FIG. 2B, the leg portion 3 has a larger thickness as shown in FIG. 2A, but FIGS. The width dimension β is set to be smaller than the width dimension α in FIG. 2B so that the cross-sectional areas S 1 and S 2 of the leg portions 3 indicated by diagonal lines are substantially the same.
【0010】実施の形態では、一対のフェライトコア1
0を電磁装置である高圧トランスに適用しており、コイ
ルボビン4は柱状部1を遊嵌する筒部5を有し、筒部5
の両端にフランジ7,8を有し、フランジ7,8の間の
筒部5の外周にコイル9を巻装している。また筒部5の
一端のフランジ8の内側に1次側フランジ11を設けフ
ランジ8と1次側フランジ11との間に1次コイルを設
けている。また筒部5の両端のフランジ7,8より径方
向の外方に延出した延出部12を有し、延出部12より
軸方向に延びた溝形の保持部13を設け、保持部13に
脚部3を圧入嵌合することにより、フェライトコア10
をコイルボビン4に保持し、それにより柱状部1を筒部
5に同心に遊嵌し保持している。In the embodiment, a pair of ferrite cores 1
0 is applied to a high-voltage transformer which is an electromagnetic device, and the coil bobbin 4 has a tubular portion 5 into which the columnar portion 1 is loosely fitted.
Has flanges 7 and 8 at both ends thereof, and a coil 9 is wound around the outer periphery of the tubular portion 5 between the flanges 7 and 8. Further, a primary side flange 11 is provided inside the flange 8 at one end of the tubular portion 5, and a primary coil is provided between the flange 8 and the primary side flange 11. Further, it has an extending portion 12 that extends outward in the radial direction from the flanges 7 and 8 at both ends of the tubular portion 5, and a groove-shaped holding portion 13 that extends in the axial direction from the extending portion 12 is provided. When the leg portion 3 is press-fitted and fitted to the ferrite core 13, the ferrite core 10
Is held by the coil bobbin 4, and thereby the columnar portion 1 is concentrically loosely fitted and held in the tubular portion 5.
【0011】この実施の形態によれば、接続部2と脚部
3のなす角度を維持する補強部6を設けることにより、
脚部3の成形による倒れを防止することが可能となる。
このため、コイルボビン4への嵌合が容易となり組立効
率と歩留りが向上する。さらに柱状部1を遊嵌させる筒
部4を有し、脚部3を保持する保持部13を有するコイ
ルボビン4にこのフェライトコアを適用しているため、
脚部3が保持部13に保持されるときに脚部3が柱状部
1側に倒れることなく柱状部1と平行に維持されている
ので、柱状部1とコイルボビン4の筒部5が偏心するこ
となく遊嵌でき、このためコイル9との絶縁距離を一様
にでき、安定した品質の電磁装置を提供できる。According to this embodiment, by providing the reinforcing portion 6 for maintaining the angle formed by the connecting portion 2 and the leg portion 3,
It is possible to prevent the leg 3 from falling due to molding.
Therefore, the coil bobbin 4 can be easily fitted, and the assembling efficiency and the yield are improved. Further, since the ferrite core is applied to the coil bobbin 4 that has the tubular portion 4 into which the columnar portion 1 is loosely fitted and has the holding portion 13 that holds the leg portion 3,
When the leg portion 3 is held by the holding portion 13, the leg portion 3 is maintained parallel to the columnar portion 1 without falling to the side of the columnar portion 1, so that the columnar portion 1 and the tubular portion 5 of the coil bobbin 4 are eccentric. It is possible to loosely fit the coil 9 without making it possible to make the insulation distance from the coil 9 uniform and to provide an electromagnetic device of stable quality.
【0012】また補強部6を脚部3の柱状部1に対向す
る面3aで柱状部1と平行に一対設けられた突条6a,
6bとしたため、脚部3の倒れをより一層確実に防止で
きるとともに、一対の突条6a,6bを脚部3の両側に
設けることにより厚さ方向が大きくなるので断面積S2
を補強部6のない脚部の断面積S1 に対して変えること
なく幅寸法βを短縮することができるとともに、単一の
突条よりもコイル9に接近できるので、電気特性が同等
の安定した品質でより一層小型化した電磁装置が可能と
なる。A pair of ridges 6a are provided on the surface 3a of the leg portion 3 facing the columnar portion 1 in parallel with the columnar portion 1, and the reinforcing portion 6 is provided on the surface 3a.
Since it is 6b, the fall of the leg portion 3 can be more surely prevented, and by providing the pair of protrusions 6a and 6b on both sides of the leg portion 3, the thickness direction becomes large, so that the sectional area S 2
The width dimension β can be shortened without changing with respect to the cross-sectional area S 1 of the leg portion without the reinforcing portion 6 and the coil 9 can be closer to the coil 9 than a single ridge, so that the electrical characteristics are stable. It is possible to realize a more compact electromagnetic device with improved quality.
【0013】この発明の第2の実施の形態を図3に示
す。すなわち、このフェライトコアは、補強部6を脚部
3の柱状部1に対向した面3aの中央で柱状部1に平行
な1本の突条により形成している。その他の構成および
作用効果は第1の実施の形態と同様である。A second embodiment of the present invention is shown in FIG. That is, in this ferrite core, the reinforcing portion 6 is formed by one ridge parallel to the columnar portion 1 at the center of the surface 3a of the leg portion 3 facing the columnar portion 1. Other configurations and operational effects are similar to those of the first embodiment.
【0014】[0014]
【発明の効果】請求項1記載の電磁装置によれば、接続
部と脚部のなす角度を維持する補強部を設けることによ
り、脚部の成形による倒れを防止することが可能とな
る。このため、コイルボビンへの嵌合が容易となり組立
効率と歩留りが向上する。さらに柱状部を遊嵌させる筒
部を有し脚部を保持する保持部を有するコイルボビンに
このフェライトコアを適用する場合、脚部が保持部に保
持されるときに脚部が柱状部側に倒れることなく柱状部
と平行に維持されているので、柱状部とコイルボビンの
筒部が偏心することなく遊嵌でき、コイルとの絶縁距離
を一様にでき、安定した品質の電磁装置を提供できる。According to the electromagnetic device of the first aspect, by providing the reinforcing portion for maintaining the angle formed by the connecting portion and the leg portion, it is possible to prevent the leg portion from falling due to molding. For this reason, fitting to the coil bobbin is facilitated, and assembly efficiency and yield are improved. Further, when this ferrite core is applied to a coil bobbin having a holding portion for holding the leg portion and a tubular portion for loosely fitting the column portion, when the leg portion is held by the holding portion, the leg portion falls to the column portion side. Since it is maintained in parallel with the columnar portion, the columnar portion and the tubular portion of the coil bobbin can be loosely fitted without eccentricity, the insulation distance from the coil can be made uniform, and an electromagnetic device of stable quality can be provided.
【0015】 請求項2記載の電磁装置によれば、請求
項1と同様な効果のほか、脚部の倒れをより一層確実に
防止できるとともに、一対の突条を脚部の両側に設ける
ことにより厚さ方向が大きくなるので断面積を変えるこ
となく幅方向を短縮することができるとともに、単一の
突条よりもコイルに接近できるので、安定した品質でよ
り一層小型化した電磁装置が可能となる。According to the electromagnetic device of the second aspect, in addition to the same effect as in the first aspect, the fall of the leg portion can be prevented more reliably, and the pair of protrusions are provided on both sides of the leg portion. Since the thickness direction becomes larger, the width direction can be shortened without changing the cross-sectional area, and since it is closer to the coil than a single ridge, a more compact electromagnetic device with stable quality is possible. Become.
【図1】この発明の第1の実施の形態を適用した電磁装
置の分解斜視図である。FIG. 1 is an exploded perspective view of an electromagnetic device to which a first embodiment of the present invention is applied.
【図2】その補強部を有するフェライトコア(a)と、
補強部を有しないフェライトコア(b)の正面図であ
る。FIG. 2 is a ferrite core (a) having the reinforcing portion,
It is a front view of the ferrite core (b) which does not have a reinforcement part.
【図3】第2の実施の形態の斜視図である。FIG. 3 is a perspective view of a second embodiment.
【図4】従来例のフェライトコアを適用した電磁装置の
分解斜視図である。FIG. 4 is an exploded perspective view of an electromagnetic device to which a conventional ferrite core is applied.
【図5】そのフェライトコアの脚部の倒れを説明する側
面図である。FIG. 5 is a side view for explaining the fall of the legs of the ferrite core.
【図6】そのフェライトコアの脚部の倒れの原因となる
収縮力を説明する説明図である。FIG. 6 is an explanatory diagram illustrating a contracting force that causes the legs of the ferrite core to fall.
1 柱状部 2 接続部 3 脚部 3a 面 4 コイルボビン 5 筒部 6 補強部 6a,6b 突条 10 フェライトコア 1 Column 2 connection 3 legs 3a side 4 coil bobbin 5 tube 6 Reinforcement part 6a, 6b ridge 10 Ferrite core
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 規幸 大阪府門真市大字門真1048番地 松下電 工株式会社内 (72)発明者 清水 義彦 兵庫県姫路市西延末404番1号 池田電 機株式会社内 (56)参考文献 特開 平6−267760(JP,A) 特開 平8−8115(JP,A) 特開 平5−36546(JP,A) (58)調査した分野(Int.Cl.7,DB名) H01F 17/00 - 27/42 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noriyuki Sato 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works, Ltd. (72) Yoshihiko Shimizu, No. 404-1, Nishinobu, Himeji, Hyogo Ikeda Electric Co., Ltd. (56) References JP-A-6-267760 (JP, A) JP-A-8-8115 (JP, A) JP-A-5-36546 (JP, A) (58) Fields investigated (Int. Cl. 7) , DB name) H01F 17/00-27/42
Claims (2)
とを備え、 前記フェライトコアが 前記コイルボビンに挿入される柱
状部と、この柱状部の一端から前記柱状部に略直交する
方向へ突出する接続部と、この接続部の先端から前記柱
状部と平行かつ同方向に延出する脚部とを備え、前記接
続部と前記脚部とのなす角度を維持する補強部を設けた
ものであり、前記コイルボビンが前記柱状部を遊嵌する筒部を有し、
前記筒部の両端に前記柱状部の端部外周を被覆するよう
に軸方向に延出するフランジを有し、前記フランジより
径方向の外方に延出して前記接続部の側面を被覆する延
出部を有し、前記延出部より前記軸方向の内方に延びて
脚部を圧入嵌合する溝形の保持部を有し、前記フランジ
間の前記筒部の外周に前記コイルを巻装した ことを特徴
とする電磁装置。1. A coil bobbin, a ferrite core and a coil
With the door parallel, a columnar portion to which the ferrite core is inserted into the coil bobbin, and a connection portion protruding in a direction generally orthogonal to the columnar portion from one end of the columnar portion, and the columnar portion from the distal end of the connecting portion And a leg portion extending in the same direction, and a reinforcing portion for maintaining an angle formed by the connecting portion and the leg portion is provided, and the coil bobbin has a tubular portion in which the columnar portion is loosely fitted. Then
Both ends of the cylindrical portion should cover the outer circumference of the end of the columnar portion.
Has a flange extending in the axial direction from the flange
An extension that extends outward in the radial direction and covers the side surface of the connection portion.
An extension portion, and extends inward in the axial direction from the extension portion.
It has a groove-shaped holding part that press-fits the legs, and the flange
An electromagnetic device in which the coil is wound around an outer periphery of the tubular portion between .
する面の両側に前記柱状部と平行に設けられた一対の突
条である請求項1記載の電磁装置。2. The electromagnetic device according to claim 1, wherein the reinforcing portion is a pair of ridges provided in parallel with the columnar portion on both sides of a surface of the leg portion facing the columnar portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24378697A JP3501633B2 (en) | 1997-09-09 | 1997-09-09 | Electromagnetic device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24378697A JP3501633B2 (en) | 1997-09-09 | 1997-09-09 | Electromagnetic device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH1187144A JPH1187144A (en) | 1999-03-30 |
JP3501633B2 true JP3501633B2 (en) | 2004-03-02 |
Family
ID=17108951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24378697A Expired - Fee Related JP3501633B2 (en) | 1997-09-09 | 1997-09-09 | Electromagnetic device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3501633B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6089824B2 (en) * | 2013-03-15 | 2017-03-08 | 株式会社デンソー | Trance |
-
1997
- 1997-09-09 JP JP24378697A patent/JP3501633B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH1187144A (en) | 1999-03-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2758837B2 (en) | Commutator fixing structure | |
JP3501633B2 (en) | Electromagnetic device | |
US6876287B2 (en) | Bobbin structure and transformer and inductor employing same | |
JP3456152B2 (en) | Ignition coil | |
JP2009130979A (en) | Rotational electric machine | |
JPH0130282B2 (en) | ||
JP3660479B2 (en) | Electromagnetic device | |
JP4278997B2 (en) | Stator manufacturing method | |
JP2605415Y2 (en) | Coil bobbins for electrical equipment | |
JP2932881B2 (en) | Electric motor | |
JP2001178059A (en) | Armature for motor | |
JPH01112012U (en) | ||
JPH054268Y2 (en) | ||
JP2005012875A (en) | Motor | |
GB2081027A (en) | Insulating stators of electric motors | |
JP2972413B2 (en) | Manufacturing method of stator for slotless motor | |
JP3438201B2 (en) | Coil bobbin | |
JP3820397B2 (en) | Bobbinless coil, coil assembly, bobbinless coil manufacturing tool, bobbinless coil manufacturing method | |
JPH0331058Y2 (en) | ||
JPH0331054Y2 (en) | ||
JP2536151Y2 (en) | Inductance element | |
JP3454679B2 (en) | Choke coil using strip winding | |
JPH0227537Y2 (en) | ||
JP3795639B2 (en) | Ignition coil for internal combustion engine | |
JPH0718433U (en) | Flyback transformer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20031118 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20031202 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071212 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081212 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081212 Year of fee payment: 5 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081212 Year of fee payment: 5 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091212 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091212 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101212 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111212 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121212 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121212 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131212 Year of fee payment: 10 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |