JPH04135086A - Coil block - Google Patents

Coil block

Info

Publication number
JPH04135086A
JPH04135086A JP2255544A JP25554490A JPH04135086A JP H04135086 A JPH04135086 A JP H04135086A JP 2255544 A JP2255544 A JP 2255544A JP 25554490 A JP25554490 A JP 25554490A JP H04135086 A JPH04135086 A JP H04135086A
Authority
JP
Japan
Prior art keywords
terminal
coil winding
laser beam
coil
bent piece
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
Application number
JP2255544A
Other languages
Japanese (ja)
Inventor
Norikimi Kaji
梶 紀公
Masami Hori
正美 堀
Hiromi Nishimura
西村 広海
Takashi Noguchi
隆 野口
Hidetoshi Takeyama
英俊 竹山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP2255544A priority Critical patent/JPH04135086A/en
Publication of JPH04135086A publication Critical patent/JPH04135086A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent a coil winding from thinning and to enable stable welding between a terminal and the coil winding by forming a terminal with metallic material having a melting temperature near the coil winding material and fixing the metallic material excellent in absorption factor to laser beam integrally to the side irradiated with the laser beam of the terminal. CONSTITUTION:A high absorption metallic sheet 9 high in absorption factor to laser beam composed of stainless steel, nickel, etc., having the same size with the width of the bent piece 3 is fixed by inlay, etc., to the back side of the terminal 1 containing the surface tart of the bent piece 3. The surface of the high absorption metallic sheet 9 mounted on the upper surface of the terminal 1 is irradiated with comparatively low strength laser beam 7, the high absorption metallic sheet 9 is melted and as the absorption factor on the surface of the terminal 1 is increased, the high absorption metallic sheet 9 is melted and the terminal l of phosphor bronze making the base metal is melted to the coil winding 6.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はリレー等の絶縁コイル巻線の端末を、コイル端
子に固着するコイルブロックの端末処理に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to terminal processing of a coil block for fixing the terminal of an insulated coil winding of a relay or the like to a coil terminal.

〔従来の技術〕[Conventional technology]

従来この種のコイルブロックの端末処理には、次のよう
なものがある。
Conventional terminal treatments for this type of coil block include the following.

(1)コイル枠に固定された端子に、コイル巻線を巻き
付け、はんだコテを用いてはんだ付けする方法。
(1) A method in which a coil winding is wound around a terminal fixed to a coil frame and soldered using a soldering iron.

(2)端子にコイル巻線を巻き付け、はんだ槽内に端子
を浸漬してはんだ付けする方法。
(2) A method in which a coil winding is wound around a terminal, and the terminal is immersed in a solder bath for soldering.

(3)はんだめっきまたは錫めっきした端子にコイル巻
線を巻き付け、ジュール熱で加熱したはんだコテで巻線
を押し付け、コイル巻線の絶縁被覆を・除去すると同時
に前記めっきの層を溶融させて接合する方法。
(3) Wrap a coil winding around a solder-plated or tin-plated terminal, press the winding with a soldering iron heated with Joule heat, remove the insulation coating of the coil winding, and at the same time melt the plating layer and join. how to.

上記で説明した各方法(1)〜(3)は、比較的簡単に
実施できる利点を有するが、はんだを利用しているため
に、はんだ用のフラックスがリレー等の接触部分に浸入
して、接点の接触不良を起こすという問題があった。
Each of the methods (1) to (3) described above has the advantage of being relatively easy to implement, but since they use solder, the soldering flux may penetrate into the contact parts of relays, etc. There was a problem of poor contact between the contacts.

この問題を解決するものとして、第4図に示したように
、ステンレス等のレーザー光線の吸収が良い金属材料で
端子1を構成し、該端子1の一部に設けた折曲片3と端
子1間にコイル巻線6を挿通し、前記折曲片3の上面よ
りレーザー光線7を照射して端子1とコイル巻線6間を
溶融し、第5図に示すように両者間の接合を図っている
ものがある。
To solve this problem, as shown in FIG. 4, the terminal 1 is made of a metal material that absorbs laser beams well, such as stainless steel. A coil winding 6 is inserted between the terminals 1 and the coil winding 6, and a laser beam 7 is irradiated from the upper surface of the bent piece 3 to melt the terminal 1 and the coil winding 6, thereby attempting to join them as shown in FIG. There are things that exist.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

従来例で説明したコイルブロックの端末処理は、接合に
はんだを用いていないために、フラックスによる接点の
接触不良を発生しないという利点を有する。
The terminal treatment of the coil block described in the conventional example does not use solder for joining, so it has the advantage of not causing poor contact at the contacts due to flux.

しかしながら、第4図に示したレーザー光線7による方
法は、端子1に比較的溶融温度が高い(約1400°C
)材料のステンレス等を使用しているために、コイル巻
線6の溶融温度(約1100°C)より溶融点が高く、
端子1そのものが充分溶融するまでレーザー光線7の熱
量を高めることが必要であるが、−船釣にリレーの小形
化および感度のアップに対応するため、コイル巻線6の
線径を掻めて細く(φ−0,03鵬以下)した場合、第
5図に示すように、コイル巻線6の溶接個所の両側6a
、6aか細くなってしまい外部からの衝撃、振動等の機
械的なストレスによりコイル断線が発生し易いう問題が
あった。
However, the method using the laser beam 7 shown in FIG.
) Since the material used is stainless steel, the melting point is higher than the melting temperature of the coil winding 6 (approximately 1100°C),
It is necessary to increase the heat of the laser beam 7 until the terminal 1 itself is sufficiently melted, but in order to respond to the need for smaller relays and higher sensitivity for boat fishing, the wire diameter of the coil winding 6 is reduced to make it thinner. (φ-0.03 or less), as shown in FIG.
, 6a is thin, and there is a problem in that the coil is likely to break due to mechanical stress such as external shock or vibration.

本発明は前記問題点に着目し改善を図ったものであって
、その目的とするところはリレーの高感度化を図るため
にコイル巻線の線径を極めて細くした時でも前記コイル
巻線の端末処理が安定して行えるコイルブロックを提供
するにある。
The present invention aims to improve the above-mentioned problems, and its purpose is to improve the reliability of the coil winding even when the wire diameter of the coil winding is made extremely thin in order to increase the sensitivity of the relay. To provide a coil block that allows stable terminal processing.

〔課題を解決するための手段〕[Means to solve the problem]

請求項(1)のコイルブロックは、前記端子をコイル巻
線に近い溶融温度の金属材料で形成するとともに端子の
レーザー光線照射側にレーザー光線の吸収率のよい金属
材料を一体に設けている。
In the coil block of claim (1), the terminal is formed of a metal material having a melting temperature close to that of the coil winding, and a metal material having a high laser beam absorption rate is integrally provided on the laser beam irradiation side of the terminal.

請求項(2)のコイルブロックは、前記端子をリン青銅
で構成するとともに該端子のレーザー光線照射側にステ
ンレス薄板を取着している。
In the coil block of claim (2), the terminal is made of phosphor bronze, and a thin stainless steel plate is attached to the laser beam irradiation side of the terminal.

請求項(3)のコイルブロックは、端子のコイル巻線側
にろう材を設けるとともに前記レーザー光線により、ろ
う材とともにコイル巻線の被覆を溶融し、端子とコイル
巻線間を接合している。
In the coil block according to the third aspect, a brazing material is provided on the coil winding side of the terminal, and the coating of the coil winding is melted together with the brazing material by the laser beam, thereby joining the terminal and the coil winding.

〔作 用〕[For production]

請求項(1)のコイルブロックは、前記端子をコイル巻
線材料に近い溶融温度の金属材料で形成するとともに端
子のレーザー光線の照射側にレーザー光線の吸収率のよ
い金属材料を一体に取着しているので、前記コイル巻線
を細くした場合でも、低強度のレーザー光線により端子
とほぼ同時にコイル巻線が溶融されるため、コイル巻線
の細りが発生せず、端子とコイル巻線間の安定した溶接
ができる。
In the coil block according to claim (1), the terminal is formed of a metal material having a melting temperature close to that of the coil winding material, and a metal material having a high laser beam absorption rate is integrally attached to the laser beam irradiation side of the terminal. Therefore, even if the coil winding is made thinner, the coil winding is melted almost simultaneously with the terminal by the low-intensity laser beam, so the coil winding does not become thinner and there is a stable connection between the terminal and the coil winding. Can weld.

請求項(2)のコイルブロックは、前記端子の金属材料
としてリン青銅を用いるとともに該端子に一体に取着し
たレーザー光線の高吸収金属材料としてステンレス薄板
を用いているので、端子とコイル巻線との溶融温度が近
似しており、かつレーザー光線が照射される表面は吸収
効果の高いステンレス薄板を取着しているので、効率の
よいレーザー溶融が行え、安定した溶接が行える。
In the coil block of claim (2), phosphor bronze is used as the metal material of the terminal, and a stainless thin plate is used as the metal material with high laser beam absorption that is integrally attached to the terminal, so that the terminal and the coil winding are The melting temperatures of these materials are similar, and the surface irradiated with the laser beam is covered with a thin stainless steel plate that has a high absorption effect, allowing efficient laser melting and stable welding.

請求項(3ンのコイルブロックは、端子のコイル巻線側
にろう材を設けるとともに前記レーザー光線により、ろ
う材とともにコイル巻線の絶縁被覆を溶融し、端子とコ
イル巻線間を接合しているので、レーザー光線の強度を
高めて、端子材料そのものを4融させる必要がないため
に、コイル巻線が極めて細くなった場合でも、低強度の
レーザー光線により安定した溶接ができる。
Claim 3: The coil block of claim 3 is provided with a brazing material on the coil winding side of the terminal, and the laser beam melts the insulation coating of the coil winding together with the brazing material, thereby joining the terminal and the coil winding. Therefore, there is no need to increase the intensity of the laser beam and melt the terminal material itself, so even if the coil winding becomes extremely thin, stable welding can be performed using a low-intensity laser beam.

〔実施例〕〔Example〕

以下本発明の一実施例を第1図に基づき説明する。 An embodiment of the present invention will be described below with reference to FIG.

同図に示すように、1は略平板状をしたリン青銅等より
なるコイル端子で、一端が絶縁体からなるコイル枠2に
固着されており、該端子lの長手方向の中央片側からは
、折曲された折曲片3が一体に延出されている。前記端
子1の折曲片3が設けられた両側には、それぞれ切欠き
部4.5が設けられている。
As shown in the figure, reference numeral 1 denotes a coil terminal made of phosphor bronze or the like having a substantially flat plate shape, one end of which is fixed to a coil frame 2 made of an insulator, and from one side of the center in the longitudinal direction of the terminal 1, The bent pieces 3 are integrally extended. Notches 4.5 are provided on both sides of the terminal 1 on which the bent pieces 3 are provided.

前記折曲片3の表面となる部分を含み、端子lの裏側に
は、該折曲片3の幅と同一寸法となっ4・たステンレス
、ニッケル等からなるレーザー光線の吸収率の高い高吸
収金属薄板9をインレイ等の方法により一体に取着して
いる。
The back side of the terminal l, including the surface of the bent piece 3, is made of a highly absorbent metal such as stainless steel or nickel that has the same dimensions as the width of the bent piece 3 and has a high absorption rate for laser beams. The thin plates 9 are attached together by a method such as inlay.

6はコイル巻線で、その表面にポリウレタン等の絶縁被
膜を被覆しており、φはリレーの小形高効率化を図るた
め、0,03閤と極めて細く形成されている。コイル巻
線6は、コイル枠2の外周に必要量だけ巻回されるとと
もに巻始めと巻終わりがそれぞれ第1図に示すように、
コイル枠2mに設けられた一方の切欠き部4に数回、巻
き付けられた後、前記端子1と折曲片3間に挿通されて
、その巻線端部が端子工の他方の切欠き部5に巻き付け
て固定されている。
Reference numeral 6 denotes a coil winding, the surface of which is coated with an insulating film such as polyurethane, and φ is formed to be extremely thin at 0.03 mm in order to make the relay compact and highly efficient. The coil winding 6 is wound around the outer periphery of the coil frame 2 by the required amount, and the winding start and winding end are respectively as shown in FIG.
After being wound several times around one notch 4 provided in the coil frame 2m, the wire is inserted between the terminal 1 and the bent piece 3, and the end of the winding is inserted into the other notch 4 of the terminal. 5 and is fixed.

このようにして、端子1にコイル巻線6の巻き付は固定
が完了すると、コイル巻線6に端子1の上面に設けられ
た高吸収金属薄板90表面に比較的強度の低いレーザー
光線7を照射し、端子lの表面での吸収率を高めながら
該高吸収金属薄板9を溶融させて、母材となるリン青銅
の端子1を溶融させている。この金属薄板9は、材料的
に溶融温度が高いものであるが、薄く形成されているた
めに容易に溶融できるものである。前記端子1が溶融し
始めると、溶融温度が近位しているコイル巻線6も外部
の絶縁被覆を溶かしながら同時に溶融されていき、両者
間が程よく安定して接合される。
In this way, when the winding and fixing of the coil winding 6 around the terminal 1 is completed, a relatively low intensity laser beam 7 is irradiated onto the surface of the highly absorbing thin metal plate 90 provided on the upper surface of the terminal 1 around the coil winding 6. The highly absorbent metal thin plate 9 is melted while increasing the absorption rate on the surface of the terminal 1, and the terminal 1 made of phosphor bronze as the base material is melted. The thin metal plate 9 is a material that has a high melting temperature, but because it is formed thin, it can be easily melted. When the terminal 1 begins to melt, the coil winding 6, whose melting temperature is close to that of the terminal 1, is simultaneously melted while melting the external insulation coating, and the two are joined in a reasonably stable manner.

なお、前記レーザー溶接の安定化を図るためには、使用
するレーザーの溶接装置として波形制御付YAGレーザ
−(住友ルモニクス社製)を使用すれば、端子1の母材
がリン青銅等のレーザー光線の吸収率が悪い材料であっ
ても簡単に溶融させることができ、安定して溶接するこ
とができる。
In order to stabilize the laser welding described above, if a YAG laser with waveform control (manufactured by Sumitomo Lumonics Co., Ltd.) is used as the laser welding device, the base material of the terminal 1 may be made of phosphor bronze, etc. Even materials with poor absorption can be easily melted and welded stably.

第2図〜第3図は、本発明の他の実施例を示したもので
あり、第1図と同一内容については、同一図番を付与し
説明を省略する。
FIGS. 2 and 3 show other embodiments of the present invention, and the same parts as in FIG. 1 are given the same numbers and their explanations are omitted.

同図において、コイル端子工0は従来のようにステンレ
ス等のレーザー光線の吸収率のよい金属材料からなり、
その表面には、錫等よりなるろう材11が貼付等の方法
により取着されている。
In the same figure, the coil terminal 0 is made of a metal material with good laser beam absorption rate, such as stainless steel, as in the past.
A brazing filler metal 11 made of tin or the like is attached to its surface by a method such as pasting.

なお、前記折曲片3と端子10の内面にそれぞれ前記ろ
う材11が対向するように設けられていため、前記コイ
ル巻線6は、ろう材11の面に挟まれたようにして設け
られる。
Note that since the brazing material 11 is provided on the inner surfaces of the bent piece 3 and the terminal 10 so as to face each other, the coil winding 6 is provided so as to be sandwiched between the surfaces of the brazing material 11.

いま、前記端子10の折曲片3の上面よりレーザー光線
7を照射すると、コイル端子lOがレーザー光線の吸収
率が高いステンレスよりなるので、レーザー光線を高効
率で峨収でき、比較的低い強度のレーザー光線によって
折曲片3の表面に適度のナゲツト(溶接面)が形成され
るとともにそのレーザー光線による熱の伝達によって、
充分に折曲片3と端子10間のろう材11が溶融し、コ
イル巻線6の外周に設けられたポリイミド等よりなる絶
縁被膜が溶け、前記コイル巻線6と端子10との接合(
電気的接続)が得られる。
Now, when the laser beam 7 is irradiated from the upper surface of the bent piece 3 of the terminal 10, the coil terminal 10 is made of stainless steel which has a high laser beam absorption rate, so the laser beam can be absorbed with high efficiency, and the laser beam of relatively low intensity can absorb the laser beam. A moderate nugget (weld surface) is formed on the surface of the bent piece 3, and the heat is transferred by the laser beam,
The brazing material 11 between the bent piece 3 and the terminal 10 is sufficiently melted, the insulating coating made of polyimide or the like provided on the outer periphery of the coil winding 6 is melted, and the coil winding 6 and the terminal 10 are joined (
electrical connection).

この場合、前記レーザー光線の強度は、端子10自体を
完全に溶融させる必要がないので、比較的低強度でよく
、レーザー溶接による他への悪影響(たとえば、コイル
枠2に取着したコイル端子lOの基部の近傍の成形材が
溶融するなど)の発生を抑えることができるとともに折
曲片3に形成されるナゲツト8の状1!(大きさ等)を
管理することにより、簡単にコイル巻線6と端子10間
の接合状態を確認することができ、溶接状態の確認が容
易にできる。
In this case, the intensity of the laser beam may be relatively low since it is not necessary to completely melt the terminal 10 itself, and the laser beam may have an adverse effect on others (for example, the coil terminal lO attached to the coil frame 2). The shape of the nugget 8 formed on the bent piece 3 can be suppressed. By managing (size, etc.), the joining state between the coil winding 6 and the terminal 10 can be easily checked, and the welding state can be easily checked.

〔発明の効果〕〔Effect of the invention〕

請求項(1)のコイルブロックは、前記端子をコイル巻
線材料に近い溶融温度の金属材料で形成するとともに端
子のレーザー光線の照射側にレーザー光線の吸収率のよ
い金属材料を一体に取着しているので、前記コイル巻線
を細くした場合でも、低強度のレーザー光線により得ら
れる熱量により、端子と一緒にコイル巻線が溶融される
ため、コイル巻線の細りがなく、端子とコイル巻線間の
安定した溶接ができる。
In the coil block according to claim (1), the terminal is formed of a metal material having a melting temperature close to that of the coil winding material, and a metal material having a high laser beam absorption rate is integrally attached to the laser beam irradiation side of the terminal. Therefore, even if the coil winding is made thinner, the heat obtained by the low-intensity laser beam melts the coil winding along with the terminal, so the coil winding does not become thinner and there is a gap between the terminal and the coil winding. Stable welding is possible.

請求項(2)のコイルブロックは、前記端子の金属材料
としてリン青銅を用いるとともに該端子に一体に取着し
たレーザー光線の高吸収金属材料としてステンレス薄板
を用いているので、端子とコイル巻線との溶融温度が近
似しており、かつレーザー光線が照射される表面は吸収
効果の高いステンレス薄板を取着しているので、効率の
よいレーザー溶融が行え、安定した溶接が行える。
In the coil block of claim (2), phosphor bronze is used as the metal material of the terminal, and a stainless thin plate is used as the metal material with high laser beam absorption that is integrally attached to the terminal, so that the terminal and the coil winding are The melting temperatures of these materials are similar, and the surface irradiated with the laser beam is covered with a thin stainless steel plate that has a high absorption effect, allowing efficient laser melting and stable welding.

請求項(3)のコイルブロックは、端子のコイル巻線側
にろう材を設けるとともに前記レーザー光線により、ろ
う材とともにコイル巻線の絶縁被覆を溶融し、端子とコ
イル巻線間を接合しているので、レーザー光線の強度を
高めて、端子材料そのものを溶融させる必要がないため
に、コイル巻線が極めて細くなった場合でも、低強度の
レーザー光線により安定した溶接ができる。
In the coil block of claim (3), a brazing material is provided on the coil winding side of the terminal, and the laser beam melts the insulation coating of the coil winding together with the brazing material, thereby joining the terminal and the coil winding. Therefore, there is no need to increase the intensity of the laser beam and melt the terminal material itself, so even if the coil winding becomes extremely thin, stable welding can be performed using a low-intensity laser beam.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明の一実施例を示す斜視図、第2図は、
同上の他の実施例を示す斜視図、第3図は、同上の側面
断面図、 第4図は、従来例を示す斜視図、 第5図は、同上の要部断面図である。 l ・ ・ ・ 2 ・ ・ ・ 3 ・ ・ ・ 6 ・ ・ ・ 7 ・ ・ ・ 9 ・ ・ ・ ンレス)、 11・・ コイル端子、 コイル枠、 折曲片、 コイル巻線、 レーザー光線、 レーザー光線の高吸収金属材料(ステ ・ろう材。 箪iml
FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing an embodiment of the present invention.
FIG. 3 is a side sectional view of the same as the above; FIG. 4 is a perspective view of a conventional example; FIG. 5 is a sectional view of essential parts of the same. 11... Coil terminal, coil frame, bent piece, coil winding, laser beam, high absorption of laser beam Metal materials (steel/brazing material. 箪iml

Claims (3)

【特許請求の範囲】[Claims] (1)コイル枠に固定された端子の一部に折曲した折曲
片を一体に設け、 該端子とその折曲片との間にコイル巻線を挿通した後、
外側からレーザー光線を照射して、端子とコイル巻線と
を溶融接合するコイルブロックにおいて、 前記端子をコイル巻線材料に近い溶融温度の金属材料で
形成するとともに該端子のレーザー光線照射側にレーザ
ー光線の吸収率のよい金属材料を一体に取着してなるこ
とを特徴とするコイルブロック。
(1) After integrally providing a bent piece on a part of the terminal fixed to the coil frame and inserting the coil winding between the terminal and the bent piece,
In a coil block that melts and joins a terminal and a coil winding by irradiating a laser beam from the outside, the terminal is formed of a metal material with a melting temperature close to that of the coil winding material, and the laser beam is absorbed on the side of the terminal that is irradiated with the laser beam. A coil block characterized by being made by integrally attaching metal materials with high efficiency.
(2)前記端子がリン青銅よりなるとともに該端子のレ
ーザー光線照射側にステンレス薄板を取着してなる請求
項(1)のコイルブロック。
(2) The coil block according to claim 1, wherein the terminal is made of phosphor bronze and a thin stainless steel plate is attached to the laser beam irradiation side of the terminal.
(3)コイル枠に固定された端子の一部に折曲した折曲
片を一体に設け、 該端子とその折曲片との間にコイル巻線を挿通した後、
外側からレーザー光線を照射して、端子とコイル巻線と
を溶融接合するコイルブロックにおいて、 前記端子のコイル巻線側にろう材を設けるとともに前記
レーザー光線により、ろう材とともにコイル巻線の被覆
を溶融し、端子とコイル巻線間を接合してなることを特
徴とするコイルブロック。
(3) After installing a bent piece integrally with a part of the terminal fixed to the coil frame and inserting the coil winding between the terminal and the bent piece,
In a coil block that melts and joins a terminal and a coil winding by irradiating a laser beam from the outside, a brazing material is provided on the coil winding side of the terminal, and the coating of the coil winding is melted together with the brazing material by the laser beam. , a coil block characterized by joining a terminal and a coil winding.
JP2255544A 1990-09-25 1990-09-25 Coil block Pending JPH04135086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2255544A JPH04135086A (en) 1990-09-25 1990-09-25 Coil block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2255544A JPH04135086A (en) 1990-09-25 1990-09-25 Coil block

Publications (1)

Publication Number Publication Date
JPH04135086A true JPH04135086A (en) 1992-05-08

Family

ID=17280203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2255544A Pending JPH04135086A (en) 1990-09-25 1990-09-25 Coil block

Country Status (1)

Country Link
JP (1) JPH04135086A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05208287A (en) * 1991-08-12 1993-08-20 Yazaki Corp Welding structure for electric connection part by laser beam
CN111540597A (en) * 2019-02-07 2020-08-14 株式会社村田制作所 Coil component and method for manufacturing same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05208287A (en) * 1991-08-12 1993-08-20 Yazaki Corp Welding structure for electric connection part by laser beam
CN111540597A (en) * 2019-02-07 2020-08-14 株式会社村田制作所 Coil component and method for manufacturing same
CN111540597B (en) * 2019-02-07 2024-03-22 株式会社村田制作所 Coil component and method for manufacturing same

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