JPH09306774A - Manufacturing chip inductor - Google Patents
Manufacturing chip inductorInfo
- Publication number
- JPH09306774A JPH09306774A JP8120009A JP12000996A JPH09306774A JP H09306774 A JPH09306774 A JP H09306774A JP 8120009 A JP8120009 A JP 8120009A JP 12000996 A JP12000996 A JP 12000996A JP H09306774 A JPH09306774 A JP H09306774A
- Authority
- JP
- Japan
- Prior art keywords
- core
- winding
- conductive coating
- external electrode
- inductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 44
- 238000000576 coating method Methods 0.000 claims description 32
- 239000011248 coating agent Substances 0.000 claims description 24
- 230000002093 peripheral effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- IHWJXGQYRBHUIF-UHFFFAOYSA-N [Ag].[Pt] Chemical compound [Ag].[Pt] IHWJXGQYRBHUIF-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、プリント基板に実
装するチップ状インダクタの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a chip-shaped inductor mounted on a printed board.
【０００２】[0002]
【従来の技術】図８に示すような従来のチップ状インダ
クタは、ドラム形コアａの円形の鍔の外面にリードフレ
ームから成る外部電極ｂを取付け、巻芯に巻線ｃを巻装
した後その端末を外部電極ｂに接続し該外部電極ｂの先
端のＬ字状部を露出させて前記ドラム形コアａ及び外部
電極ｂを外装樹脂ｄで直方体形状に被覆することにより
製造される。2. Description of the Related Art In a conventional chip-shaped inductor as shown in FIG. 8, an external electrode b made of a lead frame is attached to the outer surface of a circular flange of a drum-shaped core a, and a winding c is wound around the winding core. It is manufactured by connecting the end to the external electrode b, exposing the L-shaped portion at the tip of the external electrode b, and covering the drum-shaped core a and the external electrode b with the exterior resin d in a rectangular parallelepiped shape.
【０００３】[0003]
【発明が解決しようとする課題】上記した従来のチップ
状インダクタは、プリント基板の導電部に接続する外部
電極をドラム形コアへ取付けるのが面倒であると共に外
装樹脂が大量に必要であるので製造コストが高価になり
且つ大型になるという課題があった。The above-described conventional chip-shaped inductor is manufactured because it is troublesome to attach the external electrode connected to the conductive portion of the printed circuit board to the drum-shaped core and a large amount of exterior resin is required. There is a problem that the cost becomes high and the size becomes large.
【０００４】本発明は、上記の課題を解決し、コアに外
部電極を設けるのが容易で製造コストが低廉な小型のチ
ップ状インダクタの製造方法を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a method for manufacturing a compact chip-shaped inductor in which it is easy to provide an external electrode on the core and the manufacturing cost is low.
【０００５】[0005]
【課題を解決するための手段】本発明は上記の課題を解
決するために、請求項１に記載のように、角柱状体の全
表面に導電被膜を形成した後、その中間部を切削して断
面円形の巻芯を形成することにより該巻芯の両端に角形
の鍔を有し且つ該鍔に外部電極用導電被覆が形成された
コアを作成し、該コアの巻芯に電線を巻回して巻線を巻
装し、該巻線の端末を前記外部電極用導電被膜に接続し
たことを特徴とする。又、請求項２に記載のように、角
柱状体にその軸方向に沿って溝を形成し、次いで該角柱
状体の全表面に導電被膜を形成した後、その中間部を前
記溝より深く切削して断面円形の巻芯を形成することに
より該巻芯の両端に角形の鍔を有し且つ該鍔に外部電極
用導電被膜が形成されたコアを作成し、該コアの巻芯に
電線を巻回して巻線を巻装し、該巻線の端末を前記溝に
挿入して前記外部電極用導電被膜に接続したことを特徴
とする。In order to solve the above-mentioned problems, according to the present invention, as described in claim 1, after forming a conductive coating on the entire surface of the prismatic body, the intermediate portion thereof is cut. Forming a core having a circular cross section by forming a core having square flanges at both ends of the core and conductive coatings for external electrodes formed on the core, and winding the wire around the core. It is characterized in that the winding is wound to wind and the end of the winding is connected to the conductive coating for the external electrode. Further, as described in claim 2, after forming a groove in the prismatic body along its axial direction and then forming a conductive coating on the entire surface of the prismatic body, the intermediate portion thereof is deeper than the groove. By forming a core having a circular cross section by cutting, a core having square flanges at both ends of the core and having a conductive coating for external electrodes formed on the core is formed, and an electric wire is formed on the core of the core. Is wound to wind a winding, and the end of the winding is inserted into the groove and connected to the conductive coating for the external electrode.
【０００６】請求項１及び２記載の構成によれば、角柱
状体の全表面に導電被膜を形成した後その中間部を切削
して断面円形の巻芯を形成することにより、断面円形の
巻芯の両側に角形の鍔を有し該鍔に外部電極用導電被膜
が形成されたコアが作成され、コアの鍔への外部電極用
導電被膜の形成が少ない工数で形成することができるAccording to the structure described in claims 1 and 2, the conductive film is formed on the entire surface of the prismatic body, and then the intermediate portion is cut to form the winding core having the circular cross section. A core having square flanges on both sides of the core and having a conductive coating for external electrodes formed on the collar is formed, and the conductive coating for external electrodes on the collar of the core can be formed with a small number of steps.
【０００７】。[0007]
【発明の実施の形態】本発明の実施の形態を図面を参照
して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.
【０００８】図１は本発明製造方法によって製造された
チップ状インダクタを示す。FIG. 1 shows a chip-shaped inductor manufactured by the manufacturing method of the present invention.
【０００９】同図において、１は例えばフェライトから
成る磁性コアで、この磁性コア１は断面円形の巻芯１ａ
と一辺が例えば０．８ｍｍの４角形の鍔１ｂとから成
り、該鍔１ｂの周面と外側面にメッキ又はディップによ
り銀、銀ー白金又は銅とその上に被着された鉛−錫等か
ら成る外部電極用導電被膜２、２が形成されている。３
は前記巻芯１ａに例えば５０〜１００μｍの径を有し被
覆材料がポリウレタン、ポリアミドイミド等の絶縁被覆
電線を巻回して巻装された巻線で、その両端末４、４は
前記鍔１ｂの周面の厚み方向に延ばされて外部電極用導
電被膜２、２に溶接、熱圧着又は超音波振動により接合
される。この熱圧着では、加熱されたヘッドで絶縁被覆
電線の端末４を加圧することにより該端末４が変形され
て偏平になり前記導電被覆２に拡散接合される。又、超
音波振動では、ヘッドの振動により端末４の絶縁被覆が
除去され、クリーニングされた銅線と前記導電被膜２と
が加熱したヘッドを加圧することによって接合される。
５は前記両端末４、４が接続された前記角形の鍔１ｂの
一辺に対応する巻線３の外周面を覆って被着された例え
ばエポキシ系の合成樹脂（フィラーを入れてもよい）等
の絶縁材から成る外装材で、その表面５ａは鍔１ｂより
内側で且つ平面化されている。このインダクタは、磁性
コア１を用いているが、低インダクタンスのインダクタ
の場合には、アルミナなどの絶縁体から成るコアでもよ
く、又、外装材５を、巻線３の全外周面を被覆するよう
に被着してもよく、或いは軸方向の両端部を除く巻線３
の中間部に全周に亘って被覆してもよい。In the figure, reference numeral 1 denotes a magnetic core made of, for example, ferrite, and this magnetic core 1 has a winding core 1a having a circular cross section.
And a rectangular flange 1b having a side of 0.8 mm, for example, and silver or silver-platinum or copper and lead-tin deposited on the peripheral and outer surfaces of the flange 1b by plating or dipping. Conductive coatings 2 and 2 for external electrodes are formed. 3
Is a winding wound around the winding core 1a by winding an insulating coated electric wire having a diameter of, for example, 50 to 100 μm with a coating material such as polyurethane or polyamide-imide, and both ends 4 and 4 of the collar 1b. It is extended in the thickness direction of the peripheral surface and joined to the external electrode conductive coatings 2 and 2 by welding, thermocompression bonding or ultrasonic vibration. In this thermocompression bonding, the terminal 4 of the insulation-coated electric wire is deformed and flattened by applying pressure to the terminal 4 of the insulation-coated electric wire with a heated head, and diffusion-bonded to the conductive coating 2. In ultrasonic vibration, the insulating coating of the terminal 4 is removed by the vibration of the head, and the cleaned copper wire and the conductive coating 2 are joined by pressing the heated head.
Reference numeral 5 denotes, for example, an epoxy-based synthetic resin (which may include a filler) or the like applied to cover the outer peripheral surface of the winding wire 3 corresponding to one side of the rectangular flange 1b to which the terminals 4 and 4 are connected. The outer surface is made of an insulating material, and its surface 5a is inside the flange 1b and is planarized. This inductor uses the magnetic core 1. However, in the case of a low-inductance inductor, a core made of an insulator such as alumina may be used, and the exterior material 5 covers the entire outer peripheral surface of the winding 3. Winding 3 except for both ends in the axial direction
The intermediate portion of the above may be covered over the entire circumference.
【００１０】このチップ状インダクタは、自動実装機の
吸引ノズルを前記外装材５の平面化された表面５ａに当
てて吸着することにより容易にプリント基板上に移送配
置され、鍔１ｂに形成した外部電極導電被膜２、２をプ
リント基板の導電部に半田付けすることによりプリント
基板に実装される。磁性コア１の鍔１ｂは角形に形成さ
れているので、インダクタをプリント基板に配置したと
き、円形の鍔のコアの場合のように転がることがない。
図２は前記チップ状インダクタの製造方法の一例の製造
過程を示す。This chip-shaped inductor is easily transferred and arranged on the printed board by applying a suction nozzle of an automatic mounting machine to the flattened surface 5a of the exterior material 5 to adsorb it, and the chip-shaped inductor is formed on the collar 1b. The electrode conductive coatings 2, 2 are mounted on the printed board by soldering to the conductive parts of the printed board. Since the brim 1b of the magnetic core 1 is formed in a square shape, when the inductor is arranged on the printed board, it does not roll as in the case of the circular brim core.
FIG. 2 shows a manufacturing process of an example of a manufacturing method of the chip-shaped inductor.
【００１１】磁性体原料粉末と結合材とから成る混練材
料で角柱状体を形成し焼成して同図（Ａ）に示すように
角柱状磁性体６を作成し、次いで同図（Ｂ）に示すよう
に、角柱状磁性体６の全表面にディップ・焼付け、又は
メッキすることにより銀、銀ー白金又は銅とその上に被
着された鉛−錫等の導電材から成る導電被膜２1 を形成
する。次いで、同図（Ｃ）に示すように角柱状磁性体６
の中間部を切削して断面円形の巻芯１ａを形成し、巻芯
１ａと周面及び外側面に外部電極用導電被膜２、２が形
成された一対の角形の鍔１ｂ、１ｂとから成る磁性コア
１を作成する。次いで図１に示すように、巻芯１ａに巻
線３を巻装する。巻芯１ａの断面は円形に形成されてい
るので、絶縁被覆電線を巻芯の表面に密着させて巻回す
ることができ、巻芯を角形にした場合と比べてインダク
タンス値のばらつきが少なく、電線の絶縁被覆を損傷す
る恐れがない。巻線３の端末４、４は前述のように鍔１
ｂの外部電極用導電被膜２、２に接合する。前記端末
４、４は図３（Ａ）に示すように鍔１ｂの厚み方向に対
して傾斜させ、或いは図３（Ｂ）に示すように鍔１ｂの
外側面にまで延長して外部電極用導電被膜２、２に前述
と同様な方法で接合してもよい。A columnar magnetic body 6 is formed by forming a columnar body with a kneading material composed of a magnetic material powder and a binder and firing it as shown in FIG. as shown, dip baked on all surfaces of the prismatic magnet body 6, or plating silver by silver over platinum or copper and thereon applied by a lead - conductive coating 2 1 made of a conductive material such as tin To form. Then, as shown in FIG.
Is cut to form a winding core 1a having a circular cross section, and is composed of the winding core 1a and a pair of rectangular flanges 1b and 1b having conductive coatings 2 and 2 for external electrodes formed on the peripheral surface and the outer surface thereof. The magnetic core 1 is created. Next, as shown in FIG. 1, the winding 3 is wound around the winding core 1a. Since the winding core 1a is formed in a circular cross section, it is possible to wind the insulation-coated electric wire in close contact with the surface of the winding core, and there is less variation in the inductance value as compared with the case where the winding core is rectangular, There is no risk of damaging the wire insulation. The ends 4 and 4 of the winding 3 are the collar 1 as described above.
It is bonded to the external electrode conductive coatings 2 and 2 in FIG. The terminals 4 and 4 are inclined with respect to the thickness direction of the collar 1b as shown in FIG. 3A, or extended to the outer side surface of the collar 1b as shown in FIG. You may join to the coatings 2 and 2 by the method similar to the above.
【００１２】図４は、本発明製造方法の他例によって製
造されたチップ状インダクタを示す。 このインダクタ
においては、磁性コア１1 の４角形の鍔１ｂの各辺に深
さが例えば０．０６ｍｍのＶ形溝７、７が形成されてお
り、巻芯１ａに巻装された巻線３の両端末４、４がそれ
ぞれこの溝７、７に挿入されて外部電極用導電被膜２に
前述のように接合されている。５1 は前記巻線３の全外
周面を覆って被着された前述と同様な絶縁材から成る外
装材で、その表面は鍔１ｂより内側で且つ該４角形の鍔
１ｂの角部に対応する部分が角部側に突出して鍔１ｂの
各辺に対応する部分の表面５ａが平面に形成されてい
る。このインダクタは、磁性コア１1 を用いているが、
低インダクタンスのインダクタの場合には、アルミナな
どの絶縁体から成るコアでもよく、又、外装材５1 を、
巻線３の全外周面ではなく、軸方向の両端部を除く巻線
３の中間部に全周に亘って被覆してもよく、或いは図１
に示すように角形の鍔１ｂの一辺に対応する巻線３の外
周面上に形成してもよい。FIG. 4 shows a chip-shaped inductor manufactured by another example of the manufacturing method of the present invention. In this inductor, the magnetic core 1 1 of 4 square V-shaped grooves 7,7 depth of, for example 0.06mm on each side of the flange 1b is formed, the windings 3 wound around the winding core 1a Both ends 4 and 4 are inserted into the grooves 7 and 7 and joined to the external electrode conductive coating 2 as described above. Reference numeral 5 1 is an exterior material made of the same insulating material as described above, covering the entire outer peripheral surface of the winding wire 3, the surface of which is inside the collar 1b and corresponds to the corner portion of the quadrangular collar 1b. The portion to be protruded protrudes to the corner side, and the surface 5a of the portion corresponding to each side of the collar 1b is formed into a flat surface. This inductor is used with the magnetic core 1 1,
In the case of low inductance of the inductor may be a core made of an insulating material such as alumina, also the outer package 5 1,
Instead of the entire outer peripheral surface of the winding wire 3, the intermediate portion of the winding wire 3 may be covered over the entire circumference except both ends in the axial direction, or FIG.
Alternatively, it may be formed on the outer peripheral surface of the winding wire 3 corresponding to one side of the rectangular flange 1b as shown in FIG.
【００１３】このインダクタは、次のようにして製造さ
れる。先ず、磁性体原料粉末と結合材とから成る混練材
料で角柱状体を形成し焼成した後、その各面に軸方向に
沿ってＶ形溝７1 を切削・形成して図５に示すように角
柱状磁性体６1 を作成し、図６に示すように角柱状磁性
体６1 の全表面に前記と同様の導電材から成る導電被膜
２1 を形成する。次いで、図７に示すように角柱状磁性
体６1 の中間部を切削して断面円形の巻芯１ａを形成
し、該巻芯１ａと、周面に溝７が形成された角形の鍔１
ｂ、１ｂとから成る磁性コア１1 を作成する。次いで、
図４に示すように巻芯１ａに巻線３を巻装し、その端末
４、４を溝７、７に挿入して接合する。前記巻芯１ａを
形成するための切削深さＤ2 は、鍔１ｂ、１ｂに形成さ
れた外部電極用導電被覆３、３が巻芯１ａに残存する溝
７1 、７1 内の導電被膜２1 を介して互いに電気的に接
続されないように溝７1 の切削深さＤ1 より深く形成す
る。図４乃至図７に示すインダクタ及びその製造方法で
は、鍔１ｂ及び角形磁性体６の各辺に溝７及び７1 、を
形成したので、巻線３の端末４、４を４つの溝のどれか
に挿入して接合することにより所望のインダクタンス値
に設定することが容易である。しかしながら、対向する
２辺にそれぞれ溝７、７；７1 、７1 を形成してもよ
い。This inductor is manufactured as follows. First, after the kneading material made of binder and magnetic material powder to form a prismatic body fired, as shown in FIG. 5 by cutting and forming a V-groove 71 along the axial direction on the respective surfaces Then, a prismatic magnetic body 6 1 is formed, and a conductive coating film 2 1 made of the same conductive material as described above is formed on the entire surface of the prismatic magnetic body 6 1 as shown in FIG. Next, as shown in FIG. 7, the intermediate portion of the prismatic magnetic body 6 1 is cut to form a winding core 1a having a circular cross section, and the winding core 1a and the square-shaped brim 1 having grooves 7 formed on the circumferential surface.
A magnetic core 1 1 composed of b and 1b is prepared. Then
As shown in FIG. 4, the winding 3 is wound around the winding core 1a, and the ends 4 and 4 thereof are inserted into the grooves 7 and 7 and joined. The cutting depth D 2 for forming the core 1a is the conductive coating 2 in the grooves 7 1 , 7 1 in which the conductive coatings 3 for external electrodes formed on the collars 1b, 1b remain on the core 1a. The groove 7 1 is formed deeper than the cutting depth D 1 so as not to be electrically connected to each other through 1 . In the inductor and the method for manufacturing the same shown in FIGS. 4 to 7, since the grooves 7 and 7 1 are formed on each side of the collar 1b and the rectangular magnetic body 6, the ends 4 and 4 of the winding 3 are divided into four grooves. It is easy to set a desired inductance value by inserting into the crab and joining. However, the grooves 7, 7; 7 1 , 7 1 may be formed on the two opposite sides, respectively.
【００１４】尚、前記インダクタ及びその製造方法で
は、図示のように鍔１ｂ及び角柱状体が正方形の四角形
及び四角柱状体に形成されたが、長方形の四角形及び四
角柱状体或いは多角形及び多角柱状体でもよく、その角
部をアールに形成してもよい。In the inductor and the method for manufacturing the inductor, the collar 1b and the prismatic body are formed as square quadrangular and quadrangular prismatic bodies as shown in the drawing, but rectangular quadrangular and quadrangular prismatic bodies or polygonal and polygonal prismatic bodies. It may be a body, and its corners may be rounded.
【００１５】[0015]
【発明の効果】本発明は、コアに外部電極を設けるのが
容易で製造コストが低廉であり、配線基板に実装すると
き転がらない小型のチップ状インダクタを製造すること
ができるという効果を有する。The present invention has the effects that it is easy to provide an external electrode on the core, the manufacturing cost is low, and a small chip-shaped inductor that does not roll when mounted on a wiring board can be manufactured.
【図１】 （Ａ）及び（Ｂ）は、本発明製造方法の一例
により製造されたチップ状インダクタの斜視図及び断面
図。1A and 1B are a perspective view and a cross-sectional view of a chip-shaped inductor manufactured by an example of the manufacturing method of the present invention.
【図２】 （Ａ）（Ｂ）及び（Ｃ）は本発明製造方法の
一例の製造過程の要部を示す断面図。2 (A), (B) and (C) are cross-sectional views showing a main part of a manufacturing process of an example of the manufacturing method of the present invention.
【図３】 外部電極用導電被膜に対する巻線端末の図１
とは異なる接続例を示す平面図。FIG. 3 is a diagram of a winding terminal for a conductive coating for external electrodes.
The top view which shows the example of a connection different from FIG.
【図４】 （Ａ）及び（Ｂ）は本発明製造方法の他例に
より製造されたチップ状インダクタの斜視図及び断面
図。4A and 4B are a perspective view and a cross-sectional view of a chip-shaped inductor manufactured by another example of the manufacturing method of the present invention.
【図５】 （Ａ）及び（Ｂ）は本発明製造方法の他例の
一工程を示す正面図及び側面図。5 (A) and 5 (B) are a front view and a side view showing a step of another example of the manufacturing method of the present invention.
【図６】 （Ａ）及び（Ｂ）は本発明製造方法の他例の
続く一工程を示す縦断面図及び横断面図。6A and 6B are a longitudinal sectional view and a lateral sectional view showing a subsequent step of another example of the manufacturing method of the present invention.
【図７】 （Ａ）及び（Ｂ）は本発明製造方法の他例の
第３工程を示す縦断面図及び横断面図。7A and 7B are a longitudinal sectional view and a lateral sectional view showing a third step of another example of the manufacturing method of the present invention.
【図８】 （Ａ）及び（Ｂ）は従来の製造方法により製
造されたチップ状インダクタの斜視図及び断面図。8A and 8B are a perspective view and a sectional view of a chip-shaped inductor manufactured by a conventional manufacturing method.
１、１1 磁性コア ２1
導電被膜 ２ 外部電極用導電被膜 ３ 巻線 ４ 端末 ５、５1 外装
材 ６、６1 角柱状磁性体 ７、７1
溝1, 1 1 Magnetic core 2 1
Conductive coating 2 Conductive coating for external electrode 3 Winding 4 Terminal 5, 5 1 Exterior material 6, 6 1 Square column magnetic body 7, 7 1
groove
Claims (2)
後、その中間部を切削して断面円形の巻芯を形成するこ
とにより該巻芯の両端に角形の鍔を有し且つ該鍔に外部
電極用導電被覆が形成されたコアを作成し、該コアの巻
芯に電線を巻回して巻線を巻装し、該巻線の端末を前記
外部電極用導電被膜に接続したことを特徴とするチップ
状インダクタの製造方法。1. A conductive coating is formed on the entire surface of a prism, and an intermediate portion thereof is cut to form a winding core having a circular cross section. A core having a conductive coating for an external electrode formed on the collar, an electric wire is wound around the core of the core to wind a winding, and the end of the winding is connected to the conductive coating for the external electrode. And a method of manufacturing a chip-shaped inductor.
し、次いで該角柱状体の全表面に導電被膜を形成した
後、その中間部を前記溝より深く切削して断面円形の巻
芯を形成することにより該巻芯の両端に角形の鍔を有し
且つ該鍔に外部電極用導電被膜が形成されたコアを作成
し、該コアの巻芯に電線を巻回して巻線を巻装し、該巻
線の端末を前記溝に挿入して前記外部電極用導電被膜に
接続したことを特徴とするチップ状インダクタの製造方
法。2. A prismatic body is formed with a groove along its axial direction, and then a conductive coating is formed on the entire surface of the prismatic body, and an intermediate portion thereof is cut deeper than the groove to form a circular cross section. A core is formed by forming a core and having square flanges at both ends of the core and a conductive coating for an external electrode formed on the flange, and winding a wire around the core of the core. And a terminal of the winding is inserted into the groove and connected to the conductive coating for the external electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8120009A JPH09306774A (en) | 1996-05-15 | 1996-05-15 | Manufacturing chip inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8120009A JPH09306774A (en) | 1996-05-15 | 1996-05-15 | Manufacturing chip inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09306774A true JPH09306774A (en) | 1997-11-28 |
Family
ID=14775653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8120009A Pending JPH09306774A (en) | 1996-05-15 | 1996-05-15 | Manufacturing chip inductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09306774A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018060901A (en) * | 2016-10-05 | 2018-04-12 | 株式会社村田製作所 | Manufacturing method of coil component |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07183126A (en) * | 1993-12-24 | 1995-07-21 | Matsushita Electric Ind Co Ltd | Inductance element |
| JPH07192924A (en) * | 1993-12-27 | 1995-07-28 | Fuji Elelctrochem Co Ltd | Ferrite core for winding parts |
-
1996
- 1996-05-15 JP JP8120009A patent/JPH09306774A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07183126A (en) * | 1993-12-24 | 1995-07-21 | Matsushita Electric Ind Co Ltd | Inductance element |
| JPH07192924A (en) * | 1993-12-27 | 1995-07-28 | Fuji Elelctrochem Co Ltd | Ferrite core for winding parts |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018060901A (en) * | 2016-10-05 | 2018-04-12 | 株式会社村田製作所 | Manufacturing method of coil component |
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