JPH0631109U - electromagnet - Google Patents

Abstract

(57)【要約】 【目的】製造工程が簡略化されて製造コストの低減が図
れると共に、製造工程における品質の劣化を生じるおそ
れがない通電吸引式の電磁石を提供する。 【構成】ヨ−ク端部部材５の外端面５ａがボビン３の一
方の鍔部３ｂの端面３ｆよりわずかに突出するようにボ
ビン３の筒部３ａ内にヨ−ク端部部材５を嵌め込む。磁
性板をコ字形に形成したヨ−ク１の曲成部１ａ、１ｂ間
でボビン３を両端鍔部３ｂ、３ｃにて弾性的に挟持す
る。 (57) [Summary] [PROBLEMS] To provide an electromagnet of the electrification and suction type, which simplifies the manufacturing process to reduce the manufacturing cost and does not cause the deterioration of quality in the manufacturing process. [Structure] The yoke end member 5 is fitted into the cylindrical portion 3a of the bobbin 3 so that the outer end surface 5a of the yoke end member 5 slightly projects from the end surface 3f of one of the collar portions 3b of the bobbin 3. Put in. The bobbin 3 is elastically held between the bent portions 1a, 1b of the yoke 1 having a U-shaped magnetic plate by the collar portions 3b, 3c at both ends.

Description

【考案の詳細な説明】[Detailed description of the device]

【０００１】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、音響機器その他の電子機器に組み込まれる電磁石に係り、より詳し くは、巻線に通電することによりアーマチュアをヨークに吸引させる方式の電磁 石に関する。 The present invention relates to an electromagnet incorporated in an audio device or other electronic device, and more particularly to an electromagnetic stone of a type in which an armature is attracted to a yoke by energizing a winding.

【０００２】[0002]

【従来の技術】[Prior art]

図４（Ａ）は従来の通電吸引式の電磁石を示す斜視図、同（Ｂ）はその分解斜 視図、同（Ｃ）は該電磁石の組立途中の状態を示す断面図であり、従来の電磁石 は、コ字形をなすヨーク２０の一端の曲成部２０ａにヨーク端部部材２１の取付 け穴２０ｄを、他端の曲成部２０ｂにボビン固定穴２０ｃをそれぞれ有し、（Ｃ ）に示すように、巻線２２を施したボビン２３を矢印Ｙで示すように、ヨーク２ ０の曲成部２０ａ、２０ｂ間に押し込んでボビン２３の筒部２３ａの端部突出部 ２３ｂを前記曲成部２０ｂの穴２０ｃに嵌めてボビン２３の一端を固定する。ま た、該ボビン２３の筒部２３ａ内にその端部突出部２３ｂ側からヨーク端部部材 ２１を挿入し、該ヨーク端部部材２１の小径部２１ｂを前記曲成部２０ａの穴２ ０ｄに押し込むと共に、該ヨーク端部部材２１をボビン２３の筒部２３ａに挿入 した治具２５により支持しておいてヨーク端部部材２１をかしめることにより、 該ヨーク端部部材２１をヨーク２０の曲成部２０ａに固定すると同時に、該ヨー ク端部部材２１を介してボビン２３の他端をヨーク２０に固定していた。このよ うにヨーク２０とボビン２３とを組合わせ、ボビン２３の筒部２３ａ内にピン状 の磁性材でなるアーマチュア２４を挿入し、前記ヨーク端部部材２１の先端の円 形の穴２１ａに、アーマチュア２４の先端の円錐形部２４ａが入るように構成し ている。 FIG. 4 (A) is a perspective view showing a conventional energization / suction type electromagnet, FIG. 4 (B) is an exploded perspective view thereof, and FIG. 4 (C) is a sectional view showing a state during assembly of the electromagnet. The electromagnet has a mounting hole 20d for the yoke end member 21 in the bent portion 20a at one end of the U-shaped yoke 20, and a bobbin fixing hole 20c in the bent portion 20b at the other end. As shown, the bobbin 23 provided with the winding wire 22 is pushed between the bent portions 20a and 20b of the yoke 20 as shown by an arrow Y, and the end protruding portion 23b of the tubular portion 23a of the bobbin 23 is bent. The bobbin 23 is fixed at one end by fitting it into the hole 20c of the portion 20b. Further, the yoke end member 21 is inserted into the cylindrical portion 23a of the bobbin 23 from the end protruding portion 23b side, and the small diameter portion 21b of the yoke end member 21 is inserted into the hole 20d of the bent portion 20a. When the yoke end member 21 is bent, the yoke end member 21 is supported by a jig 25 inserted into the cylindrical portion 23a of the bobbin 23 and the yoke end member 21 is caulked, so that the yoke end member 21 is bent. The other end of the bobbin 23 was fixed to the yoke 20 via the yoke end member 21 at the same time as fixing to the forming portion 20a. As described above, the yoke 20 and the bobbin 23 are combined, the armature 24 made of a pin-shaped magnetic material is inserted into the cylindrical portion 23a of the bobbin 23, and the circular hole 21a at the tip of the yoke end member 21 is inserted into the armature 24. The armature 24 is configured so that the conical portion 24a at the tip thereof is inserted.

【０００３】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

このように、従来の電磁石は、これを製造する場合、ヨーク端部部材２１の小 径部２１ｂを一方の曲成部２０ａの穴２０ｄに挿入して、治具２５でヨーク端部 部材２１を支持しておいてかしめ付ける作業が必要であり、製造のための工数が かかり、製造コストが高くなる上、ボビン２３中に治具２５を挿入してヨーク端 部部材２１のかしめ付け作業を行う必要があるので、ボビン２３が治具の一部と 使用されて無理な力を受け、品質の劣化を生じるおそれがあるという問題点があ った。 Thus, in the case of manufacturing the conventional electromagnet, when the yoke end member 21 is manufactured, the small diameter portion 21b of the yoke end member 21 is inserted into the hole 20d of the bent portion 20a, and the yoke end member 21 is fixed by the jig 25. It is necessary to carry out the caulking work while supporting it, which requires a lot of man-hours for manufacturing, which increases the manufacturing cost, and the jig 25 is inserted into the bobbin 23 to perform the caulking work of the yoke end member 21. Since it is necessary, the bobbin 23 is used as a part of the jig and receives an excessive force, which may cause deterioration of quality.

【０００４】 本考案は、上記した実情に鑑み、作製工程が簡略化されて製造コストの低減が 図れると共に、製造工程における品質の劣化を生じるおそれがない通電吸引式の 電磁石を提供することを目的とする。In view of the above-mentioned circumstances, the present invention aims to provide an electric attraction type electromagnet that simplifies the manufacturing process to reduce the manufacturing cost and does not cause deterioration of quality in the manufacturing process. And

【０００５】[0005]

【課題を解決するための手段】[Means for Solving the Problems]

本考案は、上記目的を達成するため、巻線を施したボビンの筒部内の一方より ヨ−ク端部部材を嵌め込み、他方よりア−マチュアを挿入して、前記巻線に通電 することにより前記ヨ−ク端部部材に前記ア−マチュアを吸引させる電磁石にお いて、前記ヨ−ク端部部材の外端面がボビンの一方の鍔部の端面よりわずかに突 出するように前記ボビンの筒部内に前記ヨ−ク端部部材を嵌め込み、コ字形ヨ− クの両端曲成部間でホビンを挟持し、かつ該ヨ−クの一方の曲成部を前記ヨ−ク 端部部材の外端面に圧接させてボビンとヨークとを組合わせたことを特徴とする 。 According to the present invention, in order to achieve the above object, a yoke end member is fitted from one side of a cylindrical portion of a bobbin having a winding, and an armature is inserted from the other side to energize the winding. In an electromagnet that causes the yoke end member to attract the armature, the outer end surface of the yoke end member slightly protrudes from the end surface of one of the collars of the bobbin. The yoke end member is fitted in the tubular portion, the hobbin is sandwiched between the bent portions of both ends of the U-shaped yoke, and one bent portion of the yoke is attached to the yoke end member. It is characterized in that the bobbin and the yoke are combined by being pressed against the outer end surface.

【０００６】[0006]

【作用】[Action]

本考案においては、コ字形ヨークの曲成部間にボビンを組付けると、ヨークや ボビンが持つ弾性により、ボビンがヨークで弾性的に挟持され、前記ボビンの筒 部内に嵌め込んだヨ−ク端部部材の外端面とヨ−クの一方の曲成部が隙間なく圧 接し、ボビンの巻線に通電した時に発生する磁束の漏洩が少なくなる。 In the present invention, when the bobbin is assembled between the bent portions of the U-shaped yoke, the elasticity of the yoke and the bobbin causes the bobbin to be elastically clamped by the yoke, and the yoke inserted into the cylindrical portion of the bobbin. The outer end face of the end member and one bent portion of the yoke are pressed against each other without a gap, and the leakage of magnetic flux generated when the bobbin winding is energized is reduced.

【０００７】[0007]

【実施例】【Example】

図１（Ａ）は本考案による電磁石の一実施例を示す斜視図、同（Ｂ）は該実施 例の断面図、図２（Ａ）は該実施例の分解斜視図、同（Ｂ）はア−マチュア挿入 側の鍔部の斜視図、図３はヨ−クの曲成部とヨ−ク端部部材との圧接部を示す断 面図である。図２（Ａ）、（Ｂ）において、１はヨーク、２はアーマチュア、３ は巻線４を施したボビン、５はヨ−ク端部部材である。前記ヨーク１は鉄板等の 帯状磁性板をコ字形に形成したもので、一端に直角に折り曲げた曲成部１ａを有 し、他端にも同様に直角に折り曲げられ、かつアーマチュア２を挿入するための 挿入穴１ｃを形成した曲成部１ｂを有している。また、前記ボビン３は筒部３ａ の両端に四角形の鍔部３ｂ、３ｃを形成し、該各鍔部３ｂ、３ｃの３辺にはそれ ぞれ前記ヨーク１の曲成部１ａ、１ｂをガイドするための突出縁でなるガイド部 ３ｄ、３ｅが形成されている。また、筒部３ａの一方にはヨ−ク端部部材５の頭 部５ａを嵌め込むための筒部３ａの内径より拡大された収納部３ｈが形成されて いる。ここで１２は巻線４の両端をからげる端子であり、該各端子１２は鍔部３ ｂに根本部を埋設して取付けられている。 1A is a perspective view showing an embodiment of an electromagnet according to the present invention, FIG. 1B is a sectional view of the embodiment, FIG. 2A is an exploded perspective view of the embodiment, and FIG. FIG. 3 is a perspective view of the collar portion on the armature insertion side, and FIG. 3 is a cross-sectional view showing a pressure contact portion between the bent portion of the yoke and the yoke end member. In FIGS. 2A and 2B, 1 is a yoke, 2 is an armature, 3 is a bobbin having a winding 4, and 5 is a yoke end member. The yoke 1 is a U-shaped strip-shaped magnetic plate such as an iron plate, has a bent portion 1a bent at a right angle at one end, and is bent at a right angle at the other end as well, and an armature 2 is inserted therein. It has a bent portion 1b in which an insertion hole 1c for forming is formed. In addition, the bobbin 3 is formed with quadrangular flanges 3b and 3c at both ends of the tubular portion 3a, and the bent portions 1a and 1b of the yoke 1 are respectively guided to the three sides of the flanges 3b and 3c. Guide portions 3d and 3e that are projecting edges for forming are formed. A storage portion 3h, which is larger than the inner diameter of the tubular portion 3a, is formed in one of the tubular portions 3a for fitting the head portion 5a of the yoke end member 5 therein. Here, 12 is a terminal for pulling both ends of the winding wire 4, and each terminal 12 is attached by embedding a root part in the collar part 3b.

【０００８】 本考案による電磁石の組立は、前記筒部３ａの一方よりヨーク端部部材５を嵌 め込んでその頭部５ａを収納部３ｈに収容しておき、次に、ボビン３を鍔部３ｂ 、３ｃの、ガイド部３ｄ、３ｅに囲まれた部分に、これらのガイド部３ｄ、３ｅ に案内させてコ字形をなすヨーク１の曲成部１ａ、１ｂをスライドさせて押し込 み、これによりボビン３とヨーク１とを一体的に組合わせる。In the assembly of the electromagnet according to the present invention, the yoke end member 5 is fitted from one side of the cylindrical portion 3a, the head portion 5a thereof is accommodated in the accommodating portion 3h, and then the bobbin 3 is attached to the collar portion. 3b, 3c, the guide portions 3d, 3e are guided by these guide portions 3d, 3e, and the bent portions 1a, 1b of the U-shaped yoke 1 are slid and pushed. Thus, the bobbin 3 and the yoke 1 are integrally combined.

【０００９】 ここで、図３に示すように、ボビン３の鍔部３ｂの端面３ｆと鍔部３ｃの端面 ３ｇとの間の寸法Ｌ１は、ヨーク１の曲成部１ａと曲成部１ｂとの間の寸法Ｌ２ とほぼ同寸法に設定しており、また、ヨ−ク端部部材５は頭部５ａの外端面が鍔 部３ｂの端面３ｆよりわずかに突出するように嵌め込まれているので、ボビン３ を矢印Ｙで示す方向からヨーク１に押し込むと、ボビン３はヨーク１の曲成部１ ａと曲成部１ｂとの間で、ヨーク１とボビン３が持つ弾性により弾性的に挟持さ れ、ヨーク１に一体的に組合わされる。この組合わさった状態においては、ヨー ク１の曲成部１ａがヨーク端部部材５の頭部端面に圧接しているので、この間の 磁気抵抗は極めて小さい。Here, as shown in FIG. 3, the dimension L1 between the end surface 3f of the collar portion 3b of the bobbin 3 and the end surface 3g of the collar portion 3c is the same as the curved portion 1a and the curved portion 1b of the yoke 1. The dimension is set to be approximately the same as the dimension L2 between them, and the yoke end member 5 is fitted so that the outer end surface of the head portion 5a slightly projects from the end surface 3f of the collar portion 3b. When the bobbin 3 is pushed into the yoke 1 from the direction indicated by the arrow Y, the bobbin 3 is elastically sandwiched between the bent portions 1a and 1b of the yoke 1 by the elasticity of the yoke 1 and the bobbin 3. Now, it is integrally combined with the yoke 1. In this combined state, since the bent portion 1a of the yoke 1 is in pressure contact with the head end surface of the yoke end member 5, the magnetic resistance between them is extremely small.

【００１０】 このようにヨーク１とボビン３とを組合わせた後、図１（Ａ）、（Ｂ）に示す ように、従来例と同様にボビン３の筒部３ａ内にピン状の磁性材でなるアーマチ ュア２を挿入する。該アーマチュア２は、ばね（図示せず）等により前記ヨーク 端部部材５側から離される方向に付勢されるもので、巻線４に通電すると、ヨー ク端部部材５とアーマチュア２との両者間の対向間隙とで形成される磁気回路を 通る磁束が発生しヨーク端部部材５側に吸引され、巻線４への通電を止めると前 記離反手段の力でヨーク端部部材５から離反し、必要な動作が行われる。After the yoke 1 and the bobbin 3 are combined in this way, as shown in FIGS. 1A and 1B, a pin-shaped magnetic material is formed in the cylindrical portion 3a of the bobbin 3 as in the conventional example. Insert Armature 2 consisting of. The armature 2 is biased by a spring (not shown) or the like in a direction away from the yoke end member 5 side. When the winding 4 is energized, the yoke end member 5 and the armature 2 are separated from each other. A magnetic flux passing through the magnetic circuit formed by the opposing gap between the two is generated and attracted to the yoke end member 5 side, and when the power supply to the winding 4 is stopped, the force of the separating means causes the yoke end member 5 to move from the yoke end member 5. They are separated and the required action is taken.

【００１１】 このように、ヨーク１の曲成部１ａ、１ｂ間に、ボビン３を嵌め込む作業のみ でボビン３とヨーク１とがヨーク１の弾性を利用して固定できるので、ヨーク端 部部材５のかしめ付け加工が不要となり、作製工程が簡略化されて製造コストの 低減が図れ、かつ、ボビン３にかしめ付け工程による無理な力が掛かる恐れがな くなり製造過程における品質の劣化を防止できる。また、端部部材５がヨ−ク１ の一方の曲成部１ｂとボビン３の筒部３ａとに挟まれて、前記ヨ−ク端部部材５ の外端面５ａがヨ−ク１の一方の曲成部１ｂに隙間なく圧接するので、磁束が漏 洩することがなく、吸引力の低下を防止できる。In this way, the bobbin 3 and the yoke 1 can be fixed by utilizing the elasticity of the yoke 1 only by the work of fitting the bobbin 3 between the bent portions 1a and 1b of the yoke 1, so that the yoke end member The crimping process of 5 is not required, the manufacturing process is simplified and the manufacturing cost is reduced, and the bobbin 3 is not subject to excessive force due to the crimping process, preventing quality deterioration in the manufacturing process. it can. Further, the end member 5 is sandwiched between one bent portion 1b of the yoke 1 and the cylindrical portion 3a of the bobbin 3, and the outer end surface 5a of the yoke end member 5 is located on one side of the yoke 1. Since the curved portion 1b is pressed against the curved portion 1b without a gap, the magnetic flux does not leak and the attraction force can be prevented from decreasing.

【００１２】 なお、本考案を実施する場合、ヨーク１とボビン３とが振動等が外れたりガタ が発生したりすることを防止するため、曲成部１ａ、１ｂと鍔部３ｂ、３ｃとの 間を接着剤で固着したり、これらの一方に係止突起を、他方に該係止突起を係止 する穴、凹部、切欠等を設けて外れ止めする等の対策をとってもよい。When the present invention is implemented, in order to prevent the yoke 1 and the bobbin 3 from being deviated from vibration or causing backlash, the bending portions 1a and 1b and the brim portions 3b and 3c are separated from each other. It is also possible to take measures such as fixing the spaces with an adhesive or providing a locking projection on one of these and a hole, a recess, a notch or the like for locking the locking projection on the other to prevent the locking from coming off.

【００１３】[0013]

【考案の効果】[Effect of device]

本考案によれば、ヨークとボビンとをヨーク端部部材を挟んで弾性的に組付け るので、従来のヨーク端部部材かしめ付け加工が不要となり、作製工程が簡略化 されて製造コストの低減が図れると共に、ボビンがかしめ付けの治具として使用 されることもなく、製造過程における品質の劣化の問題を生じない。 According to the present invention, since the yoke and the bobbin are elastically assembled with the yoke end member sandwiched therebetween, the conventional yoke end member caulking process is unnecessary, the manufacturing process is simplified, and the manufacturing cost is reduced. In addition, the bobbin is not used as a jig for caulking, and the problem of quality deterioration in the manufacturing process does not occur.

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

【図１】（Ａ）は本考案による電磁石の一実施例を示す
斜視図、同（Ｂ）は該実施例の断面図である。1A is a perspective view showing an embodiment of an electromagnet according to the present invention, and FIG. 1B is a sectional view of the embodiment.

【図２】（Ａ）は該実施例の分解斜視図、同（Ｂ）はア
−マチュア挿入側の鍔部の斜視図である。2A is an exploded perspective view of the embodiment, and FIG. 2B is a perspective view of a collar portion on the armature insertion side.

【図３】本実施例におけるヨ−クの曲成部とヨ−ク端部
部材との圧接部を示す断面図である。FIG. 3 is a cross-sectional view showing a pressure contact portion between a bent portion of a yoke and a yoke end member in the present embodiment.

【図４】（Ａ）は従来の通電吸引式の電磁石を示す斜視
図、同（Ｂ）はその分解斜視図、同（Ｃ）は該電磁石の
組立途中の状態を示す断面図である。4A is a perspective view showing a conventional energization / suction type electromagnet, FIG. 4B is an exploded perspective view thereof, and FIG. 4C is a sectional view showing a state during assembly of the electromagnet.

【符号の説明】[Explanation of symbols]

１ ヨーク １ａ、１ｂ 曲成部 １ｃ 挿入穴 ２ アーマチュア ３ ボビン ３ａ 筒部 ３ｂ、３ｃ 鍔部 ３ｄ、３ｅ ガイド部 ３ｆ、３ｇ 端面 ３ｈ 収納部 ４ 巻線 ５ ヨ−ク端部部材 ５ａ 頭部 1 yoke 1a, 1b bent portion 1c insertion hole 2 armature 3 bobbin 3a tubular portion 3b, 3c collar portion 3d, 3e guide portion 3f, 3g end face 3h storage portion 4 winding 5 yoke end member 5a head portion

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】巻線を施したボビンの筒部内の一方よりヨ
−ク端部部材を嵌め込み、他方よりア−マチュアを挿入
して、前記巻線に通電することにより前記ヨ−ク端部部
材に前記ア−マチュアを吸引させる電磁石において、前
記ヨ−ク端部部材の外端面がボビンの一方の鍔部の端面
よりわずかに突出するように前記ボビンの筒部内に前記
ヨ−ク端部部材を嵌め込み、コ字形ヨ−クの両端曲成部
間でホビンを挟持し、かつ該ヨ−クの一方の曲成部を前
記ヨ−ク端部部材の外端面に圧接させてボビンとヨーク
とを組合わせたことを特徴とする電磁石。1. A yoke end member is fitted from one side of a tubular portion of a bobbin having a winding wire, an armature is inserted from the other side, and the yoke end portion is energized by energizing the winding wire. In the electromagnet for attracting the armature to the member, the yoke end portion is provided in the tubular portion of the bobbin so that the outer end surface of the yoke end member slightly protrudes from the end surface of one of the collar portions of the bobbin. The bobbin and the yoke are fitted with a member, the hobbin is sandwiched between the bent portions at both ends of the U-shaped yoke, and one bent portion of the yoke is pressed against the outer end surface of the yoke end member. An electromagnet characterized by combining and.