JPS62243307A - Electromgnetic device - Google Patents

Electromgnetic device

Info

Publication number
JPS62243307A
JPS62243307A JP8653986A JP8653986A JPS62243307A JP S62243307 A JPS62243307 A JP S62243307A JP 8653986 A JP8653986 A JP 8653986A JP 8653986 A JP8653986 A JP 8653986A JP S62243307 A JPS62243307 A JP S62243307A
Authority
JP
Japan
Prior art keywords
coil
frame
core
iron core
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.)
Pending
Application number
JP8653986A
Other languages
Japanese (ja)
Inventor
Shinji Tsuyuki
露木 伸二
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.)
Toshiba TEC Corp
Original Assignee
Tokyo Electric Co 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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP8653986A priority Critical patent/JPS62243307A/en
Publication of JPS62243307A publication Critical patent/JPS62243307A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electromagnets (AREA)

Abstract

PURPOSE:To obtain an electromagnetic device in which a plenty of fluxes can be induced with a little driving force and whose winding work can be performed easily and whose coil can be fitted to a core easily by a method wherein the thickness of the frame of a coil bobbin is made to be thin and a copper wire is wound in the state of fitting a magnetic unit into the frame. CONSTITUTION:A yoke 1 and a core 2 are solidly formed continuously. The rear end 7 of a needle 6 actuated by a spring 5 is pressed against the tip of a movable core 4 facing the attracting plane 3 of the core 2. A coil 8 is com posed of a coil bobbin 10 whose frame 9 has the thickness of 0.2mm and is composed of synthetic resin, a square tube-shape magnetic unit 11 which is fitted into the frame 9 and a copper wire wound on the frame 9. Flanges 13 are provided on both ends of the bobbin 10 and terminals 14 are inserted into the one of two flanges 13. The magnetic unit 11 is formed by folding one sheet of steel plate and a gap is formed at a part of its circumference to suppress the creation of eddy current. Conductive patterns 19 which have through-holes 18 into which the terminals 14 are inserted are formed on a circuit board 17 and both of the poles of the coil 8 can be connected to the circuit board 17 by dipping in a solder bath.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、電磁装置に関する。[Detailed description of the invention] Industrial applications TECHNICAL FIELD This invention relates to electromagnetic devices.

従来の技術 第5図に示すように、例えばワイヤドツトプリンタヘッ
ドに使用される電磁石31は、継鉄32と、鉄心33と
、コイル34と、可動鉄心35とよりなり、コイル34
に通電することにより可動鉄心35を鉄心33に吸引し
ニードル36を駆動している。このような電磁石31に
おいては、複数の鉄心に銅線を巻回してコイル34を形
成する作業が困難である。予め銅線を治具により巻回し
接着剤により所定のコイル形状に固めてから鉄心33に
装着する手段も存するが、やはり巻線作業及び配線作業
が面倒である。このため、一般的にはコイルボビン37
に銅線を巻回してコイル34を形成してから鉄心33に
装着している。38は回路基板である。
BACKGROUND ART As shown in FIG. 5, an electromagnet 31 used, for example, in a wire dot printer head includes a yoke 32, an iron core 33, a coil 34, and a movable iron core 35.
By energizing, the movable iron core 35 is attracted to the iron core 33 and the needle 36 is driven. In such an electromagnet 31, it is difficult to form the coil 34 by winding copper wire around a plurality of cores. Although there is a method of winding the copper wire in advance using a jig and hardening it into a predetermined coil shape with an adhesive before attaching it to the iron core 33, the winding work and wiring work are still troublesome. For this reason, generally the coil bobbin 37
A coil 34 is formed by winding a copper wire around the coil 34, and then attached to the iron core 33. 38 is a circuit board.

第6図及び第7図は電磁石31の一部の構造であるが、
銅線39が巻回されるコイルボビン37に銅線39の両
端が接続される端子40を設け、コイルボビン37を鉄
心33に装着したときに端子40を回路基板38のスル
ーホールに嵌合し、その嵌合部(接続部)をデツピング
により半田付けし、配線作業を向上することも行われて
いる。
6 and 7 show the structure of a part of the electromagnet 31,
A terminal 40 to which both ends of the copper wire 39 are connected is provided on the coil bobbin 37 on which the copper wire 39 is wound, and when the coil bobbin 37 is attached to the iron core 33, the terminal 40 is fitted into a through hole of the circuit board 38, and the terminal 40 is inserted into the through hole of the circuit board 38. The fitting part (connection part) is soldered by tapping to improve the wiring work.

発明が解決しようとする問題点 一方、コイルボビン37は絶縁性を必要とするため合成
樹脂製で、小さな駆動電力で多くの磁束を得るためには
、磁路断面積を大きくコイルボビン37の肉厚を小さく
する必要がある。しかし、コイルボビン37の肉厚を薄
くすると、巻線時にコイルボビン37が銅線39の締付
力により変形し鉄心33に嵌合しにくくなる。
Problems to be Solved by the Invention On the other hand, the coil bobbin 37 is made of synthetic resin because it requires insulation, and in order to obtain a large amount of magnetic flux with a small drive power, it is necessary to increase the magnetic path cross-sectional area and increase the wall thickness of the coil bobbin 37. It needs to be made smaller. However, if the wall thickness of the coil bobbin 37 is reduced, the coil bobbin 37 will be deformed by the tightening force of the copper wire 39 during winding, making it difficult to fit into the iron core 33.

また、磁気回路における損失には、銅線39の抵抗によ
る損失、継鉄32のヒステリヒス損失、渦電流損失等が
ある。このうち、渦電流は第7図に示すように、磁束量
が変化する際にその磁束量の変化を打ち消す矢印入方向
へ流れ、磁束Bの立上り、立下り特性を悪化させ、継鉄
32を発熱させる。これは、ワイヤドツトプリンタヘッ
ドにおいては動作の高速性、装置の小型化を妨げる問題
が有る。
Further, losses in the magnetic circuit include losses due to resistance of the copper wire 39, hysteresis loss of the yoke 32, eddy current loss, and the like. Of these, as shown in FIG. 7, when the amount of magnetic flux changes, the eddy current flows in the direction of the arrow that cancels out the change in the amount of magnetic flux, worsens the rise and fall characteristics of the magnetic flux B, and causes the yoke 32 to deteriorate. cause fever. This poses a problem in the wire dot printer head, which hinders high-speed operation and miniaturization of the device.

第8図に示すように、複数枚の鉄板を重ねて継鉄32及
び鉄心33を形成することにより、渦電流を低減する手
段も存するが、これは製作が困難である。特に、第5図
に示すように、継鉄32を環状に連続し、複数の鉄心3
3を環状に配列して一体形成する構造においては、極め
て製作しにくい。
As shown in FIG. 8, there is a method for reducing eddy currents by stacking a plurality of iron plates to form a yoke 32 and an iron core 33, but this is difficult to manufacture. In particular, as shown in FIG.
3 arranged in a ring shape and formed integrally is extremely difficult to manufacture.

この発明はこのような点に鑑みなされたもので、小さな
駆動力で多くの磁束を得ることができ、また、巻線作業
及び鉄心へのコイルの装着を容易に行いつる電磁装置を
提供することを目的とする。
The present invention has been made in view of the above points, and an object of the present invention is to provide an electromagnetic device that can obtain a large amount of magnetic flux with a small driving force, and can easily perform winding work and attach a coil to an iron core. With the goal.

実施例 この発明の一実施例を第1図ないし第4図に基づいて説
明する。継鉄1と鉄心2とが一体的に連続して形成され
ている。鉄心2の吸引面3に対向する可動鉄心4は継鉄
1の端面に起伏自在に保持されている。この可動鉄心4
の先端には発条5により付勢されたニードル6の後端7
が当接されている。
Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 4. A yoke 1 and an iron core 2 are integrally and continuously formed. A movable iron core 4 facing the suction surface 3 of the iron core 2 is held on the end face of the yoke 1 so as to be able to rise and fall freely. This movable iron core 4
The rear end 7 of the needle 6 is biased by the spring 5.
is in contact.

ついで、コイル8が設けられている。このコイル8は、
筒部9の肉厚が0.2mmの合成樹脂製のコイルボビン
10と、筒部9の内周に嵌合された角筒状の磁性体11
と、筒部9に巻回された銅線12とよりなる。コイルボ
ビン10は両端にフランジ13を有し、一方のフランジ
13には端子14がインサートされている。磁性体11
は一枚の鉄板を屈曲して形成したもので、したがって、
外周の一部にはギャップ16が形成されている。そして
、回路基板17には端子14が挿入されるスルーホール
18を有する導電パターン19が形成されている。
A coil 8 is then provided. This coil 8 is
A coil bobbin 10 made of synthetic resin and having a wall thickness of 0.2 mm in the cylindrical portion 9, and a rectangular cylindrical magnetic body 11 fitted to the inner periphery of the cylindrical portion 9.
and a copper wire 12 wound around a cylindrical portion 9. The coil bobbin 10 has flanges 13 at both ends, and a terminal 14 is inserted into one flange 13. Magnetic material 11
is formed by bending a single iron plate, and therefore,
A gap 16 is formed in a part of the outer periphery. A conductive pattern 19 having a through hole 18 into which the terminal 14 is inserted is formed on the circuit board 17.

このような構成において、コイルボビン1oの筒部9の
肉厚は薄いものであるが、磁性体11を筒部9に嵌合し
た状態で銅線12を巻回することにより、筒部9が銅線
12の締付力で変形する二とを防止することができる。
In such a configuration, although the wall thickness of the cylindrical portion 9 of the coil bobbin 1o is thin, by winding the copper wire 12 with the magnetic body 11 fitted into the cylindrical portion 9, the cylindrical portion 9 becomes a copper wire. Deformation due to the tightening force of the wire 12 can be prevented.

また、コイルボビン10を磁性体11とともに鉄心2に
嵌合したときに、端子14をスルーホール18に挿入す
ることができ、回路基板17の裏面を半田槽に浸すこと
により、コイル8の両極を回路基板17に接続すること
ができる。したがって、巻線作業及び鉄心2へのコイル
8の組立作業並びに配線作業を容易に行うことができる
Furthermore, when the coil bobbin 10 and the magnetic body 11 are fitted into the iron core 2, the terminals 14 can be inserted into the through holes 18, and both poles of the coil 8 can be connected to the circuit by dipping the back side of the circuit board 17 in a solder bath. It can be connected to the substrate 17. Therefore, the winding work, the assembly work of the coil 8 to the iron core 2, and the wiring work can be easily performed.

また、コイル8に通電すると可動鉄心4が鉄心2の吸引
面3に吸引され、ニードル6が駆動される。このとき、
コイルボビン10の筒部9の肉厚が薄く、また、コイル
ボビン9を補強する磁性体11が磁路断面積を増大する
ことになるため、小さな駆動電力で多くの磁束を得るこ
とができる。
Further, when the coil 8 is energized, the movable iron core 4 is attracted to the suction surface 3 of the iron core 2, and the needle 6 is driven. At this time,
Since the wall thickness of the cylindrical portion 9 of the coil bobbin 10 is thin, and the magnetic body 11 reinforcing the coil bobbin 9 increases the magnetic path cross-sectional area, a large amount of magnetic flux can be obtained with small driving power.

さらに、磁性体11の外周の一部にはギャップ16が形
成されているので、渦電流の発生を低減することができ
る。
Furthermore, since the gap 16 is formed in a part of the outer periphery of the magnetic body 11, the generation of eddy current can be reduced.

なお、磁性体は筒状のものに限られるものでは6一 なく、組立後の状態で鉄心の一部を形成し巻線時にコイ
ルボビン10を補強するものであれば、例えば断面がコ
の字形のものでもよい。
It should be noted that the magnetic material is not limited to a cylindrical material6, but may have a U-shaped cross section, for example, as long as it forms part of the core after assembly and reinforces the coil bobbin 10 during winding. It can be anything.

発明の効果 この発明は上述のように構成したので、巻線時には磁性
体によりコイルボビンの変形を防止し、巻線作業及び鉄
心へのコイルボビンの組立作業を容易に行うことができ
、また、磁性体により磁路断面積を増大し、小さな駆動
電力で多くの磁束を得ることができる等の効果を有する
Effects of the Invention Since the present invention is constructed as described above, the magnetic material prevents deformation of the coil bobbin during winding, and the winding work and the assembly work of the coil bobbin to the iron core can be easily performed. This has the effect of increasing the cross-sectional area of the magnetic path and obtaining a large amount of magnetic flux with a small drive power.

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

第1図ないし第4図はこの発明の一実施例を示すもので
、第1図は縦断側面図、第2図は分解斜視図、第3図は
コイルの斜視図、第4図は組立状態を示す斜視図、第5
図は従来のワイヤドツトプリンタヘッドに使用された電
磁石の構造を示す縦断側面図、第6図は従来の電磁石を
示す分解斜視図、第7図はその組立状態を示す斜視図、
第8図は従来の他の継鉄及び鉄心構造を示す斜視図であ
る。 1・・継鉄、2・・・鉄心、4・・・可動鉄心、10・
・コイルボビン、11・・・磁性体
Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a vertical side view, Figure 2 is an exploded perspective view, Figure 3 is a perspective view of the coil, and Figure 4 is an assembled state. 5th perspective view showing
The figure is a longitudinal side view showing the structure of an electromagnet used in a conventional wire dot printer head, FIG. 6 is an exploded perspective view showing the conventional electromagnet, and FIG. 7 is a perspective view showing its assembled state.
FIG. 8 is a perspective view showing another conventional yoke and iron core structure. 1...Yoke, 2...Iron core, 4...Movable iron core, 10...
・Coil bobbin, 11...magnetic material

Claims (1)

【特許請求の範囲】 1、一端が可動鉄心に対向する鉄心と継鉄とを磁気的に
結合して設け、巻線時にコイルボビンの内周に嵌合され
巻線後に前記鉄心に嵌合される筒形又は断面コの字形の
磁性体を設けたことを特徴とする電磁装置。 2、鉄板を折り曲げて筒状の磁性体を形成したことを特
徴とする特許請求の範囲第1項記載の電磁装置。
[Claims] 1. An iron core and a yoke, one end of which faces the movable iron core, are magnetically coupled to each other, and are fitted to the inner periphery of the coil bobbin during winding, and fitted to the iron core after winding. An electromagnetic device characterized by being provided with a magnetic body having a cylindrical shape or a U-shaped cross section. 2. The electromagnetic device according to claim 1, wherein the cylindrical magnetic body is formed by bending an iron plate.
JP8653986A 1986-04-15 1986-04-15 Electromgnetic device Pending JPS62243307A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8653986A JPS62243307A (en) 1986-04-15 1986-04-15 Electromgnetic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8653986A JPS62243307A (en) 1986-04-15 1986-04-15 Electromgnetic device

Publications (1)

Publication Number Publication Date
JPS62243307A true JPS62243307A (en) 1987-10-23

Family

ID=13889802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8653986A Pending JPS62243307A (en) 1986-04-15 1986-04-15 Electromgnetic device

Country Status (1)

Country Link
JP (1) JPS62243307A (en)

Similar Documents

Publication Publication Date Title
US7023306B2 (en) Electromagnetic relay
KR20010095333A (en) Coil for automated mounting
JP3017702B2 (en) solenoid
JPS62243307A (en) Electromgnetic device
CN115280654B (en) Movable member and linear servo motor
JPH02114418A (en) Solenoid relay
JP4096490B2 (en) Linear motor
US4709175A (en) Linear pulse motor
JPH01268005A (en) Electromagnet device
JP3056842U (en) Small high-performance electromagnet
JPS6329811B2 (en)
JPH0833304A (en) Voice coil type linear motor
KR920003075Y1 (en) Apparatus for polar electro magnets
JP2024533890A (en) Shaker
KR0173143B1 (en) Reactor and method for manufacturing the same
JP2001345214A (en) Surface mounting compact transformer
JPH0428773Y2 (en)
JPS59114806A (en) Electromagnetic coil parts
JPH0621720Y2 (en) Wire print head
JPS61193865A (en) Dot printing head
JPS59113603A (en) Movable coil type driver
JPS62117308A (en) Manufacture of coil for electromagnet
JPH0217295Y2 (en)
JPS6127141Y2 (en)
JPH0314020Y2 (en)