JP2001345225A - Surface-mounting choke coil - Google Patents
Surface-mounting choke coilInfo
- Publication number
- JP2001345225A JP2001345225A JP2000162536A JP2000162536A JP2001345225A JP 2001345225 A JP2001345225 A JP 2001345225A JP 2000162536 A JP2000162536 A JP 2000162536A JP 2000162536 A JP2000162536 A JP 2000162536A JP 2001345225 A JP2001345225 A JP 2001345225A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- core
- choke coil
- winding
- resin adhesive
- 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.)
- Granted
Links
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、表面実装チョー
クコイルに関し、特に、外形寸法の小さい端子のドラム
コアに対する接合固定の強度を充分に確保する表面実装
チョークコイルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface mount choke coil, and more particularly, to a surface mount choke coil which ensures sufficient strength for fixing terminals having small external dimensions to a drum core.
【０００２】[0002]
【従来の技術】表面実装チョークコイルの従来例を図３
および図４を参照して説明する。図３（ａ）は表面実装
チョークコイルの斜視図であり、図３（ｂ）は図３
（ａ）における線ｂ−ｂ’に沿った高さ方向断面を示す
図である。図４は図３の表面実装チョークコイルの分解
斜視図である。図３および図４において、１はリングコ
ア、２はドラムコア、３は巻線、４は端子を示す。これ
らリングコア１およびドラムコア２は電気抵抗の高い材
料であるフェライトにより構成されている。リングコア
１の側面はその一部に互いに対向する１対の平面部１２
が形成されている。互いに対向して１対の平面部１２に
隣接する円弧面部１３は、その下端部に切り欠き１１が
形成されている。2. Description of the Related Art A conventional example of a surface mount choke coil is shown in FIG.
This will be described with reference to FIG. FIG. 3A is a perspective view of a surface mount choke coil, and FIG.
It is a figure which shows the height direction cross section along line bb 'in (a). FIG. 4 is an exploded perspective view of the surface mount choke coil of FIG. 3 and 4, 1 is a ring core, 2 is a drum core, 3 is a winding, and 4 is a terminal. The ring core 1 and the drum core 2 are made of ferrite which is a material having high electric resistance. The side surface of the ring core 1 is partially formed with a pair of flat portions 12 facing each other.
Are formed. A notch 11 is formed at the lower end of the arcuate surface portion 13 that is opposed to the pair of flat surface portions 12 and adjacent to the pair of flat surface portions 12.
【０００３】ドラムコア２は１対の鍔部２０と、両鍔部
２０と一体に結合して両者を連結する捲芯部２２より成
る。この両鍔部２０はその一部に互いに対向する１対の
平坦部２１１が形成されている。ドラムコア２の捲芯部
２２に銅線が捲回されて巻線３が形成される。端子４は
その中央部に端子コア固定部４１が形成されている。そ
して、この端子４の一方の端部は先端を端子コア固定部
４１から少し屈曲してカラゲ半田部４２とされると共
に、他方の端部は直角に屈曲せしめて立ち上がり部４３
とされている。[0003] The drum core 2 includes a pair of flanges 20 and a winding core 22 which is integrally connected to the two flanges 20 to connect the two. A pair of flat portions 211 facing each other is formed in a part of the both flange portions 20. A copper wire is wound around the core portion 22 of the drum core 2 to form the winding 3. The terminal 4 has a terminal core fixing portion 41 formed at the center thereof. One end of the terminal 4 is slightly bent from the terminal core fixing portion 41 to form a caraque solder portion 42, and the other end is bent at a right angle to form a rising portion 43.
It has been.
【０００４】以上のリングコア１、ドラムコア２、巻線
３、および端子４を製造して準備する。ここで、図４
（ｂ）を参照するに、端子４は、端子コア固定部４１の
上面とドラムコア２の一方の鍔部２０の下面の間にエポ
キシ樹脂の如き熱硬化性合成樹脂接着剤を適用してこの
鍔部２０の下面に接合固定されている。この場合、端子
４の立ち上がり部４３をドラムコア２の両鍔部２０の平
坦部２１１に対向させて互に平行に接合固定する。次い
で、図４（ｃ）を参照するに、図４（ｂ）の如く構成さ
れたドラムコア２の捲芯部２２に銅線を捲回して巻線３
を形成する。巻線３の両巻線端部を端子４のカラゲ半田
部４２にカラゲ付ける。端子４のカラゲ半田部４２に巻
線３の巻線端部をカラゲ付けた状態において、カラゲ半
田部４２にー半田付けを施して端子４と巻線３とを電気
機械的に完全に接続する。The above-described ring core 1, drum core 2, winding 3, and terminal 4 are manufactured and prepared. Here, FIG.
Referring to (b), the terminal 4 is formed by applying a thermosetting synthetic resin adhesive such as epoxy resin between the upper surface of the terminal core fixing portion 41 and the lower surface of one flange portion 20 of the drum core 2. It is joined and fixed to the lower surface of the part 20. In this case, the rising portions 43 of the terminals 4 are fixed to the flat portions 211 of the both flange portions 20 of the drum core 2 in parallel with each other so as to face each other. Next, referring to FIG. 4 (c), a copper wire is wound around the core portion 22 of the drum core 2 configured as shown in FIG.
To form The ends of both windings of the winding 3 are lugged to the lump solder portion 42 of the terminal 4. In a state where the winding end of the winding 3 is lugged to the lump solder portion 42 of the terminal 4, the luggage soldering portion 42 is soldered to completely connect the terminal 4 and the winding 3 electrically and mechanically. .
【０００５】以上の通りに組み立てられたドラムコア
２、巻線３、端子４に対してリングコア１を嵌合する。
リングコア１を嵌合するに際して、リングコア１の円弧
面部１３下端の切り欠き１１をカラゲ半田部４２に対向
させると共に、平面部１２下端を端子４の立ち上がり部
４３に対応させて互いに平行にして嵌合する。端子４の
カラゲ半田部４２は半田付け後に屈曲せしめられるが、
切り欠き１１はこの屈曲せしめられたカラゲ半田部４２
を収容領域を構成する。なお、巻線３を含むドラムコア
２は熱収縮性チューブにより被覆されてリングコア１に
収容されるので、間隙５は実質上熱収縮性チューブによ
り充填された状態になる。[0005] The ring core 1 is fitted to the drum core 2, the windings 3, and the terminals 4 assembled as described above.
When fitting the ring core 1, the notch 11 at the lower end of the arcuate surface portion 13 of the ring core 1 is opposed to the carrage solder portion 42, and the lower end of the flat portion 12 is parallel to each other so as to correspond to the rising portion 43 of the terminal 4. I do. The soldering portion 42 of the terminal 4 is bent after soldering,
The notch 11 is formed by the bent carrage solder portion 42.
Constitute an accommodation area. Since the drum core 2 including the winding 3 is covered with the heat-shrinkable tube and accommodated in the ring core 1, the gap 5 is substantially filled with the heat-shrinkable tube.
【０００６】[0006]
【発明が解決しようとする課題】以上の従来例におい
て、端子４は、端子コア固定部４１の上面とドラムコア
２の一方の鍔部２０の下面の間にエポキシ樹脂の如き熱
硬化性合成樹脂接着剤を適用することにより鍔部２０の
下面に接合固定されている。即ち、端子４は、端子コア
固定部４１の上面のみを介してドラムコア２に接合固定
されているに過ぎない。In the above conventional example, the terminal 4 is formed by bonding a thermosetting synthetic resin such as an epoxy resin between the upper surface of the terminal core fixing portion 41 and the lower surface of one flange portion 20 of the drum core 2. By applying the agent, it is joined and fixed to the lower surface of the flange portion 20. That is, the terminal 4 is merely fixed to the drum core 2 only via the upper surface of the terminal core fixing portion 41.
【０００７】ところが、表面実装チョークコイルが小型
化されるにつれて端子４も小型化される。これにより、
端子コア固定部４１の外形寸法は小さくなり、これとド
ラムコア２との間の接合面積は減少する。上述した通り
に端子コア固定部４１の上面のみで端子４をドラムコア
２に接合固定することに依っては、端子４の接合固定の
強度を充分に確保することができない程度にまで、表面
実装チョークコイルの小型化は進行している。However, as the size of the surface mount choke coil is reduced, the size of the terminal 4 is also reduced. This allows
The outer dimensions of the terminal core fixing portion 41 are reduced, and the joint area between the terminal core fixing portion 41 and the drum core 2 is reduced. As described above, by joining and fixing the terminal 4 to the drum core 2 only by the upper surface of the terminal core fixing portion 41, the surface mounting choke is not so large that the strength of the joint fixing of the terminal 4 cannot be sufficiently secured. The miniaturization of coils is in progress.
【０００８】この発明は、上述の問題を解消した外形寸
法の小さい端子のドラムコアに対する接合固定の強度を
充分に確保する表面実装チョークコイルを提供するもの
である。The present invention is to provide a surface mount choke coil which solves the above-mentioned problems and which sufficiently secures the strength of fixing a terminal having a small external dimension to a drum core.
【０００９】[0009]
【課題を解決するための手段】請求項１：リングコア
１、下側鍔部２１と上側鍔部２３と両鍔部を連結する捲
芯部２２より成るドラムコア２、捲芯部２２に捲回され
る巻線３、巻線の端末を接続する端子４を有し、ドラム
コア２および巻線３側をリングコア１に嵌合した表面実
装チョークコイルにおいて、下側鍔部２１にその下面か
ら突出して互に対向する１対の端子係合突出部２１２を
形成し、端子４は金属板金を断面コ字状に折り曲げて構
成した端子本体部４０を有し、端子本体部４０の一方の
立ち上がり部に端子接合舌片４７を屈曲形成し、端子接
合舌片４７を捲芯部２２の下端面に対応させて端子４を
端子本体部４０を介してドラムコア２の端子係合突出部
２１２に係合し、捲芯部２２の下端面および端子接合舌
片４７に熱硬化性合成樹脂接着剤を適用し、端子接合舌
片４７を熱硬化性合成樹脂接着剤内に埋設した表面実装
チョークコイルを構成した。Means for Solving the Problems Claim 1: A ring core 1, a drum core 2 comprising a lower flange 21, an upper flange 23, and a core 22 connecting the two flanges, and a drum core 2 wound around the core 22. A surface mounted choke coil having a winding 3 and a terminal 4 for connecting a terminal of the winding and having the drum core 2 and the winding 3 side fitted to the ring core 1. The terminal 4 has a terminal main body 40 formed by bending a metal sheet metal into a U-shaped cross section, and the terminal 4 is provided at one of the rising portions of the terminal main body 40. The connecting tongue 47 is bent and the terminal 4 is engaged with the terminal engaging protrusion 212 of the drum core 2 via the terminal main body 40 with the terminal connecting tongue 47 corresponding to the lower end surface of the winding core 22. A thermosetting resin is attached to the lower end face of the winding core 22 and the terminal joining tongue piece 47. Applying a resin adhesive, and the terminal welding tongue 47 constitutes a surface mount choke coils embedded in a thermosetting synthetic resin adhesive.
【００１０】そして、請求項２：請求項１に記載される
表面実装チョークコイルにおいて、下側鍔部２１が形成
される捲芯部２２の下端面に凹部２２１を形成した表面
実装チョークコイルを構成した。また、請求項３：請求
項１および請求項２の内の何れかに記載される表面実装
チョークコイルにおいて、端子接合舌片４７を端子本体
部４０の一方の立ち上がり部に屈曲形成せしめると共に
立ち上がり部の横方向に関して傾斜して延伸せしめた表
面実装チョークコイルを構成した。[0010] Claim 2: In the surface-mounted choke coil described in claim 1, a surface-mounted choke coil in which a concave portion 221 is formed on the lower end surface of a core portion 22 in which a lower flange portion 21 is formed. did. Claim 3: In the surface mount choke coil according to any one of claims 1 and 2, the terminal joining tongue piece 47 is formed to be bent at one rising portion of the terminal main body 40 and the rising portion is formed. A surface-mounted choke coil was formed which was inclined and extended with respect to the lateral direction.
【００１１】更に、請求項４：請求項１ないし請求項３
の内の何れかに記載される表面実装チョークコイルにお
いて、端子接合舌片４７の上面は表面積を増大せしめる
粗面化処理或は凸凹処理を施されたものである表面実装
チョークコイルを構成した。[0011] Claim 4: Claims 1 to 3
In the surface mount choke coil described in any one of the above, a surface mount choke coil in which the upper surface of the terminal joining tongue piece 47 has been subjected to a surface roughening treatment or an uneven treatment for increasing the surface area.
【００１２】[0012]
【発明の実施の形態】この発明の実施の形態を図１およ
び図２の実施例を参照して説明する。図１は実施例を説
明する図であり、図１（ａ）は表面実装チョークコイル
の下面を示す図、図１（ｂ）は図１（ａ）の線ｂ−ｂ’
に沿った縦断面を示す図である。図２は端子の接合固定
を説明する図であり、図２（ａ）は端子の斜視図、図２
（ｂ）はドラムコアの端子を接合固定するところの斜視
図、図２（ｃ）は端子を接合固定したドラムコアの断面
を示す図である。実施例において、従来例の部材と共通
する部材には共通する参照符号を付与している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a view for explaining an embodiment, FIG. 1 (a) is a view showing a lower surface of a surface mount choke coil, and FIG. 1 (b) is a line bb 'in FIG. 1 (a).
It is a figure which shows the longitudinal cross section along. 2A and 2B are views for explaining the joining and fixing of the terminals. FIG. 2A is a perspective view of the terminals.
FIG. 2B is a perspective view in which terminals of the drum core are joined and fixed, and FIG. 2C is a diagram showing a cross section of the drum core in which terminals are joined and fixed. In the embodiments, members common to the members of the conventional example are given the same reference numerals.
【００１３】図１および図２において、リングコア１お
よびドラムコア２は電気抵抗の高い材料であるフェライ
トにより構成されている。リングコア１の側面はその一
部に互いに対向する１対の平面部１２が形成されてい
る。これら１対の平面部１２に隣接して円弧面部１３が
形成されている。１対の平面部１２は、その下端部に切
り欠き１１が形成されている。ドラムコア２は下側鍔部
２１と、上側鍔部２３と、下側鍔部２１と、両鍔部を一
体に結合連結する捲芯部２２より成る。下側鍔部２１に
は、その下面から突出して互に対向する１対の端子係合
突出部２１２が形成されている。両端子係合突出部２１
２の外側面は下側鍔部２１の周側面と共面の円弧面に形
成されている。そして、両端子係合突出部２１２の内側
面は互いに対向する平行な平面に形成されている。下側
鍔部２１が形成される捲芯部２２の下端面には横断面円
形の凹部２２１が形成されている。ドラムコア２の捲芯
部２２には巻線３が嵌合取り付けられる。In FIGS. 1 and 2, the ring core 1 and the drum core 2 are made of ferrite, which is a material having a high electric resistance. A pair of flat portions 12 facing each other is formed on a part of the side surface of the ring core 1. An arc surface portion 13 is formed adjacent to the pair of flat portions 12. The pair of flat portions 12 have a notch 11 formed at the lower end thereof. The drum core 2 includes a lower flange portion 21, an upper flange portion 23, a lower flange portion 21, and a winding core portion 22 that integrally connects and connects the two flange portions. The lower flange portion 21 is formed with a pair of terminal engaging protrusions 212 protruding from the lower surface thereof and facing each other. Double terminal engagement projection 21
The outer surface of 2 is formed in an arc surface coplanar with the peripheral side surface of the lower flange portion 21. The inner surfaces of the two terminal engaging protrusions 212 are formed in parallel flat surfaces facing each other. A concave portion 221 having a circular cross section is formed on the lower end surface of the winding core portion 22 where the lower flange portion 21 is formed. The winding 3 is fitted and attached to the winding core 22 of the drum core 2.
【００１４】端子４は金属板金を断面コ字状に折り曲げ
て構成した端子本体部４０を有し、この端子本体部４０
にドラムコア２の端子係合突出部２１２を嵌合して端子
４を仮り止めする。この端子本体部４０の一方の立ち上
がり部には、直角に屈曲せしめられると共に立ち上がり
部の横方向に関して傾斜して延伸する端子接合舌片４７
を形成している。他方の立ち上がり部には、カラゲ半田
部４２を直角に屈曲形成している。端子本体部４０の一
方の立ち上がり部から立ち上がり部の横方向に関して傾
斜して延伸する端子接合舌片４７を形成することによ
り、立ち上がり部の横方向に関して単に直交延伸する場
合と比較して、端子接合舌片４７の面積を大きくとるこ
とができる。端子接合舌片４７の上面は粗面化処理或い
は凸凹処理が施され、これにより表面積を増大せしめて
いる。端子接合舌片４７が形成される側の立ち上がり部
の高さは端子係合突出部２１２の高さより僅かに低く、
端子本体部４０を端子係合突出部２１２に係合仮り止め
した場合に端子接合舌片４７の上面と捲芯部２２の下端
面との間に僅かに隙間が形成される。The terminal 4 has a terminal body 40 formed by bending a metal sheet into a U-shaped cross section.
Then, the terminal engaging protrusion 212 of the drum core 2 is fitted to the terminal 4 to temporarily fix the terminal 4. A terminal joining tongue piece 47 that is bent at a right angle and that extends obliquely with respect to the lateral direction of the rising portion is provided at one rising portion of the terminal body 40.
Is formed. At the other rising portion, a carrage solder portion 42 is bent at a right angle. By forming the terminal joining tongue 47 extending from one of the rising portions of the terminal main body portion 40 in an inclined manner in the lateral direction of the rising portion, the terminal joining tongue piece 47 can be compared with a case of simply extending orthogonally in the lateral direction of the rising portion. The area of the tongue piece 47 can be increased. The upper surface of the terminal joining tongue piece 47 is subjected to a roughening treatment or a roughening treatment, thereby increasing the surface area. The height of the rising portion on the side where the terminal joining tongue piece 47 is formed is slightly lower than the height of the terminal engaging protrusion 212,
When the terminal main body 40 is temporarily engaged with the terminal engaging protrusion 212, a slight gap is formed between the upper surface of the terminal joining tongue 47 and the lower end surface of the winding core 22.
【００１５】以下、表面実装チョークコイルの組み立て
工程を説明する。リングコア１、ドラムコア２、巻線
３、および端子４を製造して準備する。上述した通り、
下側鍔部２１が形成される捲芯部２２の下端面には横断
面円形の凹部２２１が形成されており、先ず、この凹部
２２１を含む捲芯部２２下端面にエポキシ樹脂の如き熱
硬化性合成樹脂接着剤を充分に適用、充填する。ここ
で、端子４の端子本体部４０の立ち上がり部をドラムコ
ア２の端子係合突出部２１２に位置決めした状態で端子
４を端子係合突出部２１２に対して強く圧し付けて嵌合
仮り止めせしめる。これにより、端子係合突出部２１２
に対して強く仮り止めされた端子接合舌片４７の上面
が、凹部２２１を含む捲芯部２２下端面に充分に適用充
填されている熱硬化性合成樹脂接着剤に圧し付けられ、
この熱硬化性合成樹脂接着剤の下面に端子接合舌片４７
の上面が係合接触した状態が実現する。次いで、凹部２
２１を含む捲芯部２２下端面の熱硬化性合成樹脂接着剤
の下面に上面が係合接触した状態の端子接合舌片４７の
下面に、熱硬化性合成樹脂接着剤を更に適用する。熱硬
化性合成樹脂接着剤は、捲芯部２２下端面の熱硬化性合
成樹脂接着剤に圧し付けられることにより、端子接合舌
片４７の近傍に溢れてはみ出して存在するが、後から適
用された熱硬化性合成樹脂接着剤はこの端子接合舌片４
７の近傍に溢れてはみ出している先の熱硬化性合成樹脂
接着剤と端子接合舌片４７の下面の双方を覆うこととな
り、先の熱硬化性合成樹脂接着剤と後から適用された熱
硬化性合成樹脂接着剤は接合一体化され、結局、端子接
合舌片４７は熱硬化性合成樹脂接着剤内に埋設される結
果となる。熱硬化性合成樹脂接着剤を加熱硬化すると、
端子接合舌片４７の上面は凹部２２１を含む捲芯部２２
下端面の熱硬化性合成樹脂接着剤とその近傍にはみ出し
た熱硬化性合成樹脂接着剤を介して捲芯部２２の下端面
に強く接合されることになる。そして、端子接合舌片４
７の下面に適用された熱硬化性合成樹脂接着剤が、先に
適用充填された熱硬化性合成樹脂接着剤および溢れ出し
た熱硬化性合成樹脂接着剤に接合一体化することによ
り、端子接合舌片４７の下面も接合一体化した熱硬化性
合成樹脂接着剤を介して捲芯部２２の下端面に強く接合
されることになる。Hereinafter, a process of assembling the surface mount choke coil will be described. A ring core 1, a drum core 2, a winding 3, and a terminal 4 are manufactured and prepared. As mentioned above,
A concave portion 221 having a circular cross section is formed in the lower end surface of the core portion 22 where the lower flange portion 21 is formed. First, the lower end surface of the core portion 22 including the concave portion 221 is heat-cured such as epoxy resin. Apply and fill the functional synthetic resin adhesive. Here, the terminal 4 is strongly pressed against the terminal engaging protrusion 212 in a state where the rising portion of the terminal main body 40 of the terminal 4 is positioned on the terminal engaging protrusion 212 of the drum core 2 to temporarily stop the fitting. Thereby, the terminal engagement protrusion 212
The upper surface of the terminal joining tongue piece 47 that is temporarily temporarily fixed is pressed against a thermosetting synthetic resin adhesive that is sufficiently applied and filled to the lower end surface of the core portion 22 including the concave portion 221,
A terminal joining tongue 47 is attached to the lower surface of the thermosetting synthetic resin adhesive.
A state in which the upper surfaces of the two are engaged with each other is realized. Next, the recess 2
The thermosetting synthetic resin adhesive is further applied to the lower surface of the terminal joining tongue piece 47 in a state where the upper surface is in contact with the lower surface of the thermosetting synthetic resin adhesive at the lower end surface of the winding core 22 including 21. Although the thermosetting synthetic resin adhesive is pressed against the thermosetting synthetic resin adhesive on the lower end surface of the core portion 22, it overflows and protrudes near the terminal joining tongue piece 47, but is applied later. The thermosetting synthetic resin adhesive is applied to the terminal joining tongue 4.
7 covers both the thermosetting synthetic resin adhesive overflowing and protruding and the lower surface of the terminal joining tongue piece 47, and the thermosetting synthetic resin adhesive and the thermosetting applied later are covered. As a result, the terminal bonding tongue 47 is embedded in the thermosetting synthetic resin adhesive. When the thermosetting synthetic resin adhesive is cured by heating,
The upper surface of the terminal joining tongue piece 47 has a winding core 22 including a recess 221.
The lower end surface of the core portion 22 is strongly bonded to the lower end surface of the core via the thermosetting synthetic resin adhesive on the lower end surface and the thermosetting synthetic resin adhesive protruding in the vicinity thereof. And the terminal joining tongue piece 4
7 is joined to the thermosetting synthetic resin adhesive previously applied and filled and the overflowed thermosetting synthetic resin adhesive, thereby joining the terminals. The lower surface of the tongue piece 47 is also strongly bonded to the lower end surface of the core portion 22 via a thermosetting synthetic resin adhesive that is integrally bonded.
【００１６】次いで、ドラムコア２の捲芯部２２に巻線
３を嵌合取り付ける。巻線３の両巻線端部を端子４のカ
ラゲ半田部４２にカラゲ付ける。端子４のカラゲ半田部
４２に巻線３の巻線端部をカラゲ付けた状態において、
カラゲ半田部４２に半田付けを施して端子４と巻線３と
を電気機械的に接続する。以上の通りに組み立てられた
ドラムコア２、巻線３、端子４に対してリングコア１を
嵌合する。リングコア１を嵌合するに際して、１対の平
面部１２に形成されている切り欠き１１をカラゲ半田部
４２に対応させて嵌合する。切り欠き１１は端子４のカ
ラゲ半田部４２を収容する領域を構成する。Next, the winding 3 is fitted and attached to the winding core 22 of the drum core 2. The ends of both windings of the winding 3 are lugged to the lump solder portion 42 of the terminal 4. In a state in which the winding end of the winding 3 is lumped to the lump solder 42 of the terminal 4,
The terminals 4 and the windings 3 are electrically and mechanically connected to each other by soldering the soldering portions 42. The ring core 1 is fitted to the drum core 2, the winding 3, and the terminal 4 assembled as described above. When fitting the ring core 1, the notches 11 formed on the pair of flat portions 12 are fitted in correspondence with the carrage solder portions 42. The notch 11 constitutes a region for accommodating the caramel solder portion 42 of the terminal 4.
【００１７】[0017]
【発明の効果】以上の通りであって、この発明に依れ
ば、端子接合舌片４７を捲芯部２２の下端面に対応させ
て端子４を端子本体部４０を介してドラムコア２の端子
係合突出部２１２に係合し、捲芯部２２の下端面および
端子接合舌片４７に熱硬化性合成樹脂接着剤を適用して
端子接合舌片４７を熱硬化性合成樹脂接着剤内に埋設し
たことにより、熱硬化性合成樹脂接着剤が硬化した曉に
おいて、端子接合舌片４７の上面および下面は、双方共
にこの熱硬化性合成樹脂接着剤を介して捲芯部２２の下
端面に強く接合される。As described above, according to the present invention, the terminal 4 is connected to the terminal of the drum core 2 via the terminal body 40 with the terminal joining tongue 47 corresponding to the lower end surface of the core portion 22. The terminal joint tongue 47 is engaged with the engagement protrusion 212, and a thermosetting synthetic resin adhesive is applied to the lower end surface of the core part 22 and the terminal joint tongue 47 so that the terminal joint tongue 47 is in the thermosetting synthetic resin adhesive. When the thermosetting synthetic resin adhesive is cured by embedding, both the upper surface and the lower surface of the terminal joining tongue 47 are attached to the lower end surface of the core portion 22 via the thermosetting synthetic resin adhesive. Strongly joined.
【００１８】そして、下側鍔部２１が形成される捲芯部
２２の下端面に凹部２２１を形成したことにより、捲芯
部２２の下端面と端子接合舌片４７の上面の間に充分に
熱硬化性合成樹脂接着剤を確保することができ、捲芯部
２２の下端面と端子接合舌片４７の上面の間の結合をよ
り強固にする。また、端子接合舌片４７を端子本体部４
０の一方の立ち上がり部から立ち上がり部の横方向に関
して傾斜して延伸形成することにより、立ち上がり部の
横方向に関して単に直交して延伸形成する場合と比較し
て、端子接合舌片４７の面積を大きくとることができ、
それだけ捲芯部２２の下端面に対する接合強度を増大す
ることができる。Since the concave portion 221 is formed on the lower end surface of the core portion 22 where the lower flange portion 21 is formed, a sufficient space is provided between the lower end surface of the core portion 22 and the upper surface of the terminal joining tongue 47. A thermosetting synthetic resin adhesive can be secured, and the connection between the lower end surface of the core portion 22 and the upper surface of the terminal joining tongue piece 47 is further strengthened. Further, the terminal joining tongue piece 47 is connected to the terminal body 4.
0, the area of the terminal joining tongue 47 is larger than that in the case of extending and extending at a right angle to the lateral direction of the rising portion by extending and extending in the lateral direction of the rising portion from one of the rising portions. Can be taken,
Accordingly, the bonding strength to the lower end surface of the core part 22 can be increased.
【００１９】更に、端子接合舌片４７の上面に粗面化処
理或いは凸凹形成処理を施して表面積を増大せしめ、即
ち、捲芯部２２の下端面に直接接合する接合強度により
貢献する側の面の表面積を増大したことにより、接合強
度を更に増大することができる。Further, the upper surface of the terminal joining tongue piece 47 is subjected to a roughening treatment or an uneven forming treatment to increase the surface area, that is, the surface which contributes to the joining strength directly joined to the lower end surface of the core portion 22. , The bonding strength can be further increased.
【図１】実施例の下面を示す図。FIG. 1 is a diagram showing a lower surface of an embodiment.
【図２】実施例の分解斜視図。FIG. 2 is an exploded perspective view of the embodiment.
【図３】従来例を説明する図。FIG. 3 illustrates a conventional example.
【図４】従来例の分解斜視図。FIG. 4 is an exploded perspective view of a conventional example.
１ リングコア １１ 切り欠き １２ 平面部 １３ 円弧面部 ２ ドラムコア ２０ 鍔部 ２１ 下側鍔部 ２１１ 平坦部 ２１２ 端子係合突出部 ２２ 捲芯部 ２２１ 凹部 ２３ 上側鍔部 ２３１ 平坦部 ３ 巻線 ４ 端子 ４０ 端子本体部 ４１ 端子コア固定部 ４２ カラゲ半田部 ４３ 立ち上がり部 ４７ 端子接合舌片 DESCRIPTION OF SYMBOLS 1 Ring core 11 Notch 12 Flat part 13 Circular surface part 2 Drum core 20 Flange part 21 Lower flange part 211 Flat part 212 Terminal engagement protruding part 22 Core part 221 Depression 23 Upper flange part 231 Flat part 3 Winding 4 Terminal 40 Terminal Body part 41 Terminal core fixing part 42 Carrage solder part 43 Rising part 47 Terminal joining tongue
Claims (4)
部を連結する捲芯部より成るドラムコア、捲芯部に捲回
される巻線、巻線の端末を接続する端子を有し、ドラム
コアおよび巻線側をリングコアに嵌合した表面実装チョ
ークコイルにおいて、 下側鍔部にその下面から突出して互いに対向する１対の
端子係合突出部を形成し、 端子は金属板金を断面コ字状に折り曲げて構成した端子
本体部を有し、 端子本体部の一方の立ち上がり部に端子接合舌片を屈曲
形成し、 端子接合舌片を捲芯部の下端面に対応させて端子を端子
本体部を介してドラムコアの端子係合突出部に係合し、 捲芯部の下端面および端子接合舌片に熱硬化性合成樹脂
接着剤を適用し、端子接合舌片を熱硬化性合成樹脂接着
剤内に埋設したことを特徴とする表面実装チョークコイ
ル。The invention has a ring core, a drum core comprising a core portion connecting a lower flange portion, an upper flange portion and both flange portions, a winding wound around the core portion, and a terminal for connecting a terminal of the winding. In the surface-mounted choke coil in which the drum core and the winding side are fitted to the ring core, a pair of terminal engaging projections projecting from the lower surface of the lower flange and facing each other are formed. The terminal body has a terminal body portion bent in a U-shape, and a terminal joining tongue is bent at one rising portion of the terminal body, and the terminal is fitted to the terminal joining tongue corresponding to the lower end surface of the core. Engage the terminal engagement protrusion of the drum core via the terminal body, apply a thermosetting synthetic resin adhesive to the lower end surface of the winding core and the terminal joining tongue, and thermoset the terminal joining tongue. Surface mount choke characterized by being embedded in a resin adhesive Le.
コイルにおいて、 下側鍔部が形成される捲芯部の下端面に凹部を形成した
ことを特徴とする表面実装チョークコイル。2. The surface-mounted choke coil according to claim 1, wherein a concave portion is formed on a lower end surface of the core portion on which the lower flange portion is formed.
記載される表面実装チョークコイルにおいて、 端子接合舌片を端子本体部の一方の立ち上がり部に屈曲
形成せしめると共に立ち上がり部の横方向に関して傾斜
して延伸せしめたことを特徴とする表面実装チョークコ
イル。3. The surface mounting choke coil according to claim 1, wherein the terminal joining tongue is bent at one of the rising portions of the terminal main body, and the terminal joining tongue is bent in a lateral direction of the rising portion. A surface-mounted choke coil characterized by being inclined and extended with respect to.
記載される表面実装チョークコイルにおいて、 端子接合舌片の上面は表面積を増大せしめる粗面化処理
或いは凸凹処理を施されたものであることを特徴とする
表面実装チョークコイル。4. The surface mount choke coil according to claim 1, wherein an upper surface of the terminal joining tongue is subjected to a surface roughening treatment or an uneven treatment for increasing a surface area. A surface mount choke coil characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000162536A JP3437820B2 (en) | 2000-05-31 | 2000-05-31 | Surface mount choke coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000162536A JP3437820B2 (en) | 2000-05-31 | 2000-05-31 | Surface mount choke coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001345225A true JP2001345225A (en) | 2001-12-14 |
| JP3437820B2 JP3437820B2 (en) | 2003-08-18 |
Family
ID=18666423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000162536A Expired - Fee Related JP3437820B2 (en) | 2000-05-31 | 2000-05-31 | Surface mount choke coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3437820B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319082C (en) * | 2002-09-10 | 2007-05-30 | 东京零件工业股份有限公司 | Panel mounting type choke coil |
| US7362201B2 (en) | 2005-09-07 | 2008-04-22 | Yonezawa Electric Wire Co., Ltd. | Inductance device and manufacturing method thereof |
| JP2015133418A (en) * | 2014-01-14 | 2015-07-23 | Tdk株式会社 | Coil device |
| JP2015133372A (en) * | 2014-01-10 | 2015-07-23 | Tdk株式会社 | Coil device |
| US9318251B2 (en) | 2006-08-09 | 2016-04-19 | Coilcraft, Incorporated | Method of manufacturing an electronic component |
| JP7390900B2 (en) | 2020-01-16 | 2023-12-04 | Tdk株式会社 | coil device |
-
2000
- 2000-05-31 JP JP2000162536A patent/JP3437820B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319082C (en) * | 2002-09-10 | 2007-05-30 | 东京零件工业股份有限公司 | Panel mounting type choke coil |
| US7362201B2 (en) | 2005-09-07 | 2008-04-22 | Yonezawa Electric Wire Co., Ltd. | Inductance device and manufacturing method thereof |
| US9318251B2 (en) | 2006-08-09 | 2016-04-19 | Coilcraft, Incorporated | Method of manufacturing an electronic component |
| US10319507B2 (en) | 2006-08-09 | 2019-06-11 | Coilcraft, Incorporated | Method of manufacturing an electronic component |
| US11869696B2 (en) | 2006-08-09 | 2024-01-09 | Coilcraft, Incorporated | Electronic component |
| JP2015133372A (en) * | 2014-01-10 | 2015-07-23 | Tdk株式会社 | Coil device |
| JP2015133418A (en) * | 2014-01-14 | 2015-07-23 | Tdk株式会社 | Coil device |
| JP7390900B2 (en) | 2020-01-16 | 2023-12-04 | Tdk株式会社 | coil device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3437820B2 (en) | 2003-08-18 |
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