JPS60573B2 - Manufacturing method of electromagnetic clutch - Google Patents

Description

【発明の詳細な説明】 本発明は、カークーラ用コンブレッサーとエンジンとの
連結部などに用いられる好適な電磁クラッチの製造方法
に係り、特に電磁クラッチの回転体部分の製造方法の改
良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an electromagnetic clutch suitable for use in a connection between a car cooler compressor and an engine, and more particularly to an improvement in a method for manufacturing a rotor portion of an electromagnetic clutch.

従来のカークーラ用コンブレッサーとエンジンとの連結
部に用いられる電磁クラッチを第１図ないし第３図に基
づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An electromagnetic clutch used in a conventional connection between a car cooler compressor and an engine will be explained with reference to FIGS. 1 to 3.

第１図において、固定部であるコンブレッサーのケーシ
ング１にはベアリング２を介して第１の回転体３が回転
自在に支持されている。この回転体３は磁性材料により
構成されるとともに、駆動手段としてのエンジン（図示
せず）にＶベルトを介して回転されるＶプーリ部４を有
し、かっこのＶプーリ部４の内方にケーシング１側から
開□した環状の凹部５を有している。このの凹部５内に
は「凹部５の内外周面にそれぞれわずかな電磁空間６，
７を介して励磁装置８が挿入されている。この励磁装置
８は、電磁吸引力を発生させる電磁コイル９と、この電
磁コイル９を前記ケーシングーに支持させるとともに磁
路の一部を構成する磁性材料よりなる継鉄１０とから構
成されている。前記第１の回転体３のケーシング１とは
反対側の端面には、第２の回転体１１の可動片１２が対
向されている。In FIG. 1, a first rotating body 3 is rotatably supported by a casing 1 of a compressor, which is a fixed part, via a bearing 2. As shown in FIG. This rotary body 3 is made of a magnetic material, and has a V-pulley part 4 which is rotated by an engine (not shown) as a driving means via a V-belt, and has a V-pulley part 4 inside the brackets. It has an annular recess 5 that opens from the casing 1 side. In this recess 5, there is a small electromagnetic space 6 on the inner and outer peripheral surfaces of the recess 5, respectively.
An excitation device 8 is inserted via 7. This excitation device 8 includes an electromagnetic coil 9 that generates an electromagnetic attraction force, and a yoke 10 made of a magnetic material that supports the electromagnetic coil 9 on the casing and forms part of a magnetic path. A movable piece 12 of a second rotary body 11 is opposed to an end surface of the first rotary body 3 on the side opposite to the casing 1 .

この第２の回転体１１は、前記可動片１２の他に、該可
動片１２に板ばね１３を介して連結されたハブ１４と、
このハブ１４に一端をナット１５などにより固定され、
他端を図示しない被駆動手段としてのコンブレツサの斜
板等に連結されたシャフト１６とを備えている。前記第
１の回転体３と第２の回転体１１に対向された面すなわ
ち摩擦面は、第２図に示されるように、同○的に配置さ
れ、それぞれ所定中の間隙を形成する４個の弧状孔１７
，１８とこれらの弧状孔１７，１８の間に設けられた中
Ｗ，あるいはＷ２の連結部１９，２０と、これらの弧状
孔１７，１８および連結部１９，２０‘こより画成され
た三重のリング状部材２１，２２，２３とから構成され
ている。This second rotating body 11 includes, in addition to the movable piece 12, a hub 14 connected to the movable piece 12 via a leaf spring 13;
One end is fixed to this hub 14 with a nut 15 or the like,
It has a shaft 16 whose other end is connected to a swash plate of a combustor or the like as a driven means (not shown). As shown in FIG. 2, the surfaces facing the first rotating body 3 and the second rotating body 11, that is, the friction surfaces, are arranged in the same manner, and each has four surfaces forming a predetermined gap. arcuate hole 17
, 18 and the connecting portions 19, 20 of the middle W or W2 provided between these arcuate holes 17, 18, and the triple layer defined by these arcuate holes 17, 18 and connecting portions 19, 20'. It is composed of ring-shaped members 21, 22, and 23.

また「前記第２の回転体１１の可動片１２は磁性材料に
より形成されるとともに、第３図に示されるように、前
記弧状孔１７，１８と同０状になるようにトかつこれら
の弧状孔１７，１８の中間に位置するように設けられ所
定中の間隙を形成する３個の弧状孔２４と、これらの弧
状孔２４の間に設けられた中Ｗ３の連結部２５、これら
の弧状孔２４および連結部２５により画成された二重の
りング状部材２６，２７とから構成されている。Furthermore, the movable piece 12 of the second rotary body 11 is formed of a magnetic material, and is shaped so that it has the same shape as the arc-shaped holes 17 and 18, as shown in FIG. Three arcuate holes 24 located between the holes 17 and 18 and forming a predetermined gap, a connecting portion 25 of the middle W3 provided between these arcuate holes 24, and a connecting portion 25 of the arcuate holes. 24 and a double ring-shaped member 26, 27 defined by a connecting portion 25.

このような構成において、第１の回転体３は「エンジン
の回転中は図示しないＶベルトおよびＶプーリ４を介し
て常時回転されているが、励磁装置８の電磁コイル９に
通電されないときは、第２の回転体１１の可動片１２は
、板ばね１３の作用により第１の回転体３とは離れた状
態にあるためト第２の回転体１１は回転されず「ハブ１
４およびシャフト１６を介して連結された被駆動手段も
回転されない。一方、電磁コイル９に通電されると、第
１の回転体３の可動片１２に対向した面に形成された弧
状孔１７，１８と、第２の回転体１１の可動片１２に設
けられた弧状孔２４との磁気遮断作用のため、主磁気回
路０は、第１図中破線で示されるようにト継鉄１０、内
方の電磁空間６，凹部５の内壁を形成する第１の回転体
３の内周壁、第１の回転体３の内方リング状部材２１ト
可動片１２の内方のりング状部材２６、第１の回転体３
の中央のリング状部材２２、可動片１２の外方のりング
状部材２７、第１の回転体３の外方のりング状部材２３
、凹部５の外壁を形成する第１の回転体３の外周壁およ
び外方の磁気空間７を通って再び継鉄１０１こ戻るよう
に形成され、これにより電磁吸引力が発生して可動片１
２を板ばね１３に抗して第１の回転体３側に吸引し、可
動片１２が第１の回転体３に摩擦係合される。In such a configuration, the first rotating body 3 is constantly rotated via a V-belt and a V-pulley 4 (not shown) while the engine is rotating, but when the electromagnetic coil 9 of the excitation device 8 is not energized, The movable piece 12 of the second rotating body 11 is in a state separated from the first rotating body 3 due to the action of the leaf spring 13, so that the second rotating body 11 is not rotated and the "hub 1" is not rotated.
4 and the driven means connected via shaft 16 are also not rotated. On the other hand, when the electromagnetic coil 9 is energized, the arcuate holes 17 and 18 formed in the surface facing the movable piece 12 of the first rotating body 3 and the movable piece 12 of the second rotating body 11 are opened. Due to the magnetic isolation effect with the arcuate hole 24, the main magnetic circuit 0 is connected to the yoke 10, the inner electromagnetic space 6, and the first rotation forming the inner wall of the recess 5, as shown by the broken line in FIG. The inner peripheral wall of the body 3, the inner ring-shaped member 21 of the first rotating body 3, the inner ring-shaped member 26 of the movable piece 12, and the first rotating body 3
a central ring-shaped member 22, an outer ring-shaped member 27 of the movable piece 12, and an outer ring-shaped member 23 of the first rotating body 3.
, the yoke 101 is formed so as to return again through the outer circumferential wall of the first rotary body 3 forming the outer wall of the recess 5 and the outer magnetic space 7, thereby generating an electromagnetic attraction force and moving the movable piece 1
2 is attracted toward the first rotating body 3 against the leaf spring 13, and the movable piece 12 is frictionally engaged with the first rotating body 3.

このため、第１の回転体３に伝えられている駆動手段の
駆動力が可動片１２、板ばね１３、ハブ１４およびシャ
フト１６の順序で伝達され、図示しない被駆動手段が駆
動されるようになっている。このような従来型の電磁ク
ラッチにおいては、励磁装置８により誘起される磁束は
、前記主磁気回路中の他に、第１の回転体３の連結部１
９，２０および第２の回転体１１の可動片１２の連結部
２５にも流れるため、全磁束に対して有効磁束の割合が
減少し、所要の吸引力を得るために必然的に大型の電磁
クラッチとなる欠点を有している。Therefore, the driving force of the driving means that is being transmitted to the first rotating body 3 is transmitted to the movable piece 12, the leaf spring 13, the hub 14, and the shaft 16 in this order, so that the driven means (not shown) is driven. It has become. In such a conventional electromagnetic clutch, the magnetic flux induced by the excitation device 8 is transmitted not only to the main magnetic circuit but also to the connecting portion 1 of the first rotating body 3.
9, 20 and the connecting portion 25 of the movable piece 12 of the second rotating body 11, the ratio of effective magnetic flux to the total magnetic flux decreases, and in order to obtain the required attractive force, a large electromagnetic flux is required. It has the disadvantage of becoming a clutch.

また「第１の回転体３の可動片１２側端部および可動片
１２に設けられる弧状孔１８，１９，２４はｔプレス打
板によって製作され「かつ「第１の回転体３の可動片１
２側端部と可動片１２との両摩擦面側は、電磁吸引力発
生部の磁気抵抗を少なくするため「あるいは両摩擦面間
の摩擦係数を安定させるため「プレス打板作業後、切削
および研摩作業で仕上げられる。ここで、切削・研摩に
より弧状孔１８，１９，２４の加工面側に‘より、かえ
り等が発生し、この除去作業はやすりあるいはロータリ
ーバー等を用いて行うが、手間がかかりコスト高となる
欠点がある。本発明の目的は、前記した無効磁束の通路
を極力少なくし、かつ、製作の容易な電磁クラッチの製
造方法を提供するにある。Further, "the end of the movable piece 12 of the first rotary body 3 and the arcuate holes 18, 19, 24 provided in the movable piece 12 are manufactured by a T-press plate," and "the movable piece 1 of the first rotary body 3
The two friction surfaces of the second end and the movable piece 12 are cut and cut after the press plate operation in order to reduce the magnetic resistance of the electromagnetic attraction force generating part or to stabilize the friction coefficient between the two friction surfaces. It is finished by polishing. At this point, burrs etc. are generated on the processed surfaces of the arcuate holes 18, 19, 24 due to cutting and polishing, and this removal work is done using a file or a rotary bar, but it is time-consuming. However, it is an object of the present invention to provide a method for manufacturing an electromagnetic clutch which minimizes the number of paths for the above-mentioned ineffective magnetic flux and which is easy to manufacture.

本発明は、駆動手段に連結された第１の回転体と「 こ
の第１の回転体に対向された被駆動手段に連結された第
２の回転体との少なくとも一方が所定中の間隙を置いて
同じ状に配置された複数のリング状部村で構成され、前
記所定中の間隙の円周方向の所定位置において互いに隣
接するりング状部村にまたがった凹部を所定間隔で複数
個形成し、これらの凹部の内周面にそれぞれ周方向溝を
形成し「かつこれらの凹部内に非磁性材料からなり前記
リング状部材より変形抵抗の小さい結合部材を挿入して
加圧塑性変形させて前記円周溝内に流入させ、この塑性
変形された結合部材の敷断力と緊迫力とにより各リング
状部材の結合力を生じさせて前記目的を達成しようとす
るものである。The present invention provides a first rotary body connected to a driving means and a second rotary body connected to a driven means facing the first rotary body, at least one of which is arranged with a predetermined gap. A plurality of concave portions are formed at predetermined intervals and are composed of a plurality of ring-shaped portions arranged in the same shape, and extend over adjacent ring-shaped portions at predetermined positions in the circumferential direction of the predetermined gap. A circumferential groove is formed on the inner peripheral surface of each of these recesses, and a coupling member made of a non-magnetic material and having a lower deformation resistance than the ring-shaped member is inserted into these recesses and plastically deformed by pressure. The purpose is to achieve the above object by causing the ring-shaped members to flow into the circumferential groove and generating a bonding force between the ring-shaped members by the breaking force and tension force of the plastically deformed coupling member.

以下、本発明の実施例を図面に基づいて説明する。ここ
において、前記従来例と同一もしくは相当構成部分は同
一符号を用いるものとする。第４図ないし第６図は、本
発明を第１の回転体に実施した一例を示すものである。
第１の回転体３は、所定中すなわち中Ｔ，および中Ｌの
間隙を形成する弧状孔１７，１８を介して三個のりング
状部材２１，２２，２３が配置されて構成されている。
前記弧状孔１７，１８の円周方向の所定位置には、隣接
するりング状部材２１と２２あるいは２２と２３とにま
たがって前記弧状孔１７，１８の中Ｔ，，Ｌよりそれぞ
れ広い中（直径）Ｄ，，Ｄ２の凹部３１，３２が所定間
隔を置いて複数個たとえば各４個設けられている。これ
らの凹部３１，３２の内周面には、それぞれ周方向溝３
３，３４が設けられている。この際、凹部３１，３２は
、第１の回転体３の可動片側端面から励磁装置装着用凹
部５まで貫通した円柱形状に形成され、円周溝３３，３
４は、凹部３１，３２のそれぞれ軸方向中央部において
たとれば深さ０．５肋程度形成されている。前記凹部３
１，３２内には、非磁性で「かつ前記鉄などの磁性材料
からなるリング状部材２１，２２，２３より変形抵抗の
小さい材料、たとえば銅またはアルミニウムあるいはこ
れらの合金からなり、外直径がＤ，，Ｄ２とほぼ等しい
円柱状の結合部材３５，３６が挿入されている。Embodiments of the present invention will be described below based on the drawings. Here, the same or equivalent components as in the prior art example are designated by the same reference numerals. 4 to 6 show an example in which the present invention is applied to a first rotating body.
The first rotating body 3 includes three ring-shaped members 21, 22, and 23 arranged through arc-shaped holes 17 and 18 that form predetermined gaps, that is, a middle T gap and a middle L gap.
At predetermined positions in the circumferential direction of the arcuate holes 17 and 18, there are holes (inner holes) each extending between the adjacent ring-shaped members 21 and 22 or 22 and 23 and being wider than the insides T and L of the arcuate holes 17 and 18, respectively. A plurality of recesses 31 and 32 having diameters) D, , D2 are provided at predetermined intervals, for example, four each. Circumferential grooves 3 are provided on the inner peripheral surfaces of these recesses 31 and 32, respectively.
3 and 34 are provided. At this time, the recesses 31 and 32 are formed in a cylindrical shape penetrating from the movable one side end surface of the first rotating body 3 to the recess 5 for attaching the exciter, and the recesses 33 and 32
4 is formed at the center of each of the recesses 31 and 32 in the axial direction to a depth of about 0.5 ribs. Said recess 3
1 and 32 are made of a material that is non-magnetic and has a lower deformation resistance than the ring-shaped members 21, 22, 23 made of a magnetic material such as iron, such as copper, aluminum, or an alloy thereof, and has an outer diameter of D. , , D2 are inserted into the cylindrical coupling members 35 and 36.

これらの結合部村３５，３６は、全体が実質的に前記凹
部３１，３２と一対の金型３７，３８で包囲された状態
とされ、凸形の金型３７を凹部３１，３２の内方に向っ
て加圧挿入させて結合部材３５，３６を塑性流動させ、
これにより結合部材３６，３６を円周溝３３，３４内に
流入させて結合部材３５，３６の灘断力と緊迫力とによ
り各リング状部材２・１と２２間および２２と２３間が
確固に結合されている。上述のような本実施例によれば
、各リング状部材２１，２２，２３間は、非磁性材料か
らなる結合部村３５，３６により機械的に強固に固定す
ることができる。The joint villages 35 and 36 are substantially entirely surrounded by the recesses 31 and 32 and a pair of molds 37 and 38, and the convex mold 37 is inserted into the recesses 31 and 32. The connecting members 35 and 36 are made to plastically flow by being pressurized and inserted toward the
As a result, the connecting members 36, 36 are caused to flow into the circumferential grooves 33, 34, and the shearing force and tension force of the connecting members 35, 36 securely connect each ring-shaped member 2, between 1 and 22, and between 22 and 23. is combined with According to this embodiment as described above, the ring-shaped members 21, 22, 23 can be mechanically and firmly fixed by the connecting portions 35, 36 made of non-magnetic material.

一方「磁気的には遮断されているためトリング状部材２
１と２２間およびリング状部材２２と２３間の漏洩磁束
は極めて少〈なり、第１の回転体３と第２の回転体１１
の可動片１２との間に、より大きな電磁吸引力が得られ
る。換言すれば、従来型の電磁クラッチと電磁吸引力を
同一とすれば励磁装置８のより小形な電磁クラッチを製
作できる。また、本実施例によれば、各リング状部材２
１，２２，２３間の弧状孔１７，１８が円形であるため
、各リング状部材２１，２２，２３の端部に生成される
切削、研摩加工時のばり、かえり等は旋削加工により容
易に除去することができる。On the other hand, "because it is magnetically blocked, the ring-shaped member 2
The leakage magnetic flux between 1 and 22 and between the ring-shaped members 22 and 23 is extremely small, and the leakage magnetic flux between the first rotating body 3 and the second rotating body 11 is extremely small.
A larger electromagnetic attraction force can be obtained between the movable piece 12 and the movable piece 12. In other words, if the electromagnetic attraction force is the same as that of a conventional electromagnetic clutch, a smaller electromagnetic clutch of the excitation device 8 can be manufactured. Further, according to this embodiment, each ring-shaped member 2
Since the arcuate holes 17, 18 between 1, 22, 23 are circular, burrs, burrs, etc. generated at the ends of each ring-shaped member 21, 22, 23 during cutting and polishing can be easily removed by turning. Can be removed.

さらに「結合部材３５，３６の直径Ｄ，，Ｄ２は各ｌｊ
ング状部材２１と２２あるいは２２と２３との間の弧状
孔１７，１８の中Ｔ，，Ｔ２より大とされているから、
各リング状部材２１，２２間あるいは２２，２３間の回
転トルクに抗する連結強度は非常に大であり、かつ、鞄
方向においても円周溝３３，３４部への流入分が大きな
抗力となって軸方向力に対する連結強ドも非常に大であ
る。また、結合部材３５，３６は、リング状部村２１，
２２，２３の所定位置で点状に部分的に配置されている
のみであるから、少量の材料で各リング状部材２１，２
２，２３の結合を行なうことができ「経済的である。次
に、第７図ないし第９図は、本発明を第１の回転体に実
施した他の例を示すものである。Further, ``the diameters D, D2 of the coupling members 35, 36 are each lj
Since it is larger than the middle T, T2 of the arc-shaped holes 17, 18 between the ring-shaped members 21 and 22 or 22 and 23,
The connection strength between each ring-shaped member 21 and 22 or between 22 and 23 that resists the rotational torque is very large, and also in the direction of the bag, the amount flowing into the circumferential grooves 33 and 34 causes a large resistance. Therefore, the connection strength against axial force is also very large. Further, the coupling members 35 and 36 are connected to the ring-shaped portion 21,
Since the rings 22 and 23 are only partially arranged in a dotted manner at predetermined positions, each ring-shaped member 21 and 2 can be formed with a small amount of material.
2, 23 connections can be made, which is economical. Next, FIGS. 7 to 9 show other examples in which the present invention is implemented in the first rotating body.

本実施例が前記第４図ないし第６図の実施例と異なるの
は、各隣接するりング状部材２１，２２間あるいは２２
，２３間にまたがって形成される凹部３１，３２の位置
において、各リング状部村２１，２２，２３はそれぞれ
厚さＴ３，Ｔ４、中Ｗ４，Ｗ５の連結部３９，４川こよ
り一体に連結されている点であり、他は同様である。こ
れにより凹部３１，３２は有底円筒状とされ、この凹部
３１，３２内に非磁性材料よりなる結合部材３５，３６
を挿入後塑性変形させて各リング状部材２１，２２，２
３を機械的に結合し、第１の回転体３を製作するもので
ある。上述のような本実施例によれば、機械的結合強度
は非磁性材料よりなる結合部材３５，３６の斑断力、緊
迫力により行なうため、無効磁束の通路となる連結部３
９，４０‘ま極力小さくできて電磁吸引力による第１の
回転体３と第２の回転体１１の可動片１２との吸着性能
を向上させることができる。This embodiment is different from the embodiments shown in FIGS.
, 23, each ring-shaped part village 21, 22, 23 is connected integrally with a connecting part 39, 4 strands of thickness T3, T4, middle W4, W5, respectively. The other points are the same. As a result, the recesses 31 and 32 are formed into cylindrical shapes with bottoms.
After insertion, each ring-shaped member 21, 22, 2 is plastically deformed.
3 are mechanically connected to produce the first rotating body 3. According to this embodiment as described above, the mechanical bonding strength is achieved by uneven breaking force and tension force of the coupling members 35 and 36 made of non-magnetic materials, so that the coupling portion 3 serves as a path for the ineffective magnetic flux.
9 and 40' can be made as small as possible, thereby improving the adsorption performance between the first rotary body 3 and the movable piece 12 of the second rotary body 11 due to electromagnetic attractive force.

また、連結部３９，４０により各リング状部材２１，２
２，２３は一体物として構成されているから、各リング
状部村２１，２２，２３の間の間隙すなわち弧状孔１７
，１８を拾具等を用いることなく正確に形成することが
できるとともに、金型も凸形の金型３７のみでなく、作
業コストを低減でいる。さらに、各リング状部材２１，
２２，２３の端部に生成される切削、研摩加工時のばり
、かえり等は、前記実施例と同様に旋削加工により容易
に除去でき、また、連結強度が大の点および少量の結合
部材３５，３６で結合できる点等も前記実施例と同様で
ある。なお、前記各実施例においては、凹部３１，３２
および結合部材３５，３６の形状を円形あるいは円柱状
としたが、本発明はこれに限定されるものではなく、他
の形状、たとえば四角柱、三角柱状などとしてもよい。In addition, each ring-shaped member 21, 2 is connected by the connecting portions 39, 40.
2 and 23 are constructed as one piece, the gap between each ring-shaped part village 21, 22, and 23, that is, the arc-shaped hole 17
, 18 can be formed accurately without using pick-up tools or the like, and the mold is not only a convex mold 37, but the work cost can be reduced. Furthermore, each ring-shaped member 21,
The burrs, burrs, etc. generated at the ends of the ends of the parts 22 and 23 during cutting and polishing can be easily removed by turning, as in the previous embodiment. , 36 are also similar to the previous embodiment. In addition, in each of the above embodiments, the recesses 31 and 32
Although the connecting members 35 and 36 are circular or cylindrical in shape, the present invention is not limited thereto, and may be in other shapes, such as a square prism or a triangular prism.

しかし、円柱状とす机よ加工が容易であるという利点が
ある。また、前記各実施例においては、本発明を第１の
回転体３に実施したものにつき述べたが、本発明はこれ
に限定されるものではなく、第２の回転体１１の可動片
１２にも同様に適用できるものである。上述のように本
発明によれば、無効磁束の通路を極力少なくでき、かつ
製作の電磁クラッチの製造方法を提供できるという効果
がある。However, a cylindrical shape has the advantage of being easy to machine. Furthermore, in each of the above embodiments, the present invention has been described with reference to the first rotary body 3; however, the present invention is not limited to this, and the present invention is applied to the movable piece 12 of the second rotary body 11. is also applicable in the same way. As described above, according to the present invention, it is possible to minimize the number of paths of ineffective magnetic flux, and it is possible to provide a method for manufacturing an electromagnetic clutch.

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

第１図は従来の電磁クラッチの断面図、第２図は第１図
の０‐Ｄ線に沿う縮小断面図、第３図は第１図のｍ‐ｍ
線に沿う縮小断面図、第４図は本発明に係る製造方法に
より製造された電磁クラッチの一実施例を示す回転体の
正面図、第５図は第４図のＶ−Ｖ線に沿う断面図、第６
図は第４図の町‐Ｗ線に沿う断面図、第７図は本発明の
他の実施例を示す回転体の正面図、第８図は第７図の側
‐側線に沿う断面図、第９図は第７図のび‐Ｍ線に沿う
断面図である。 １・・・固定部としてのケーシング、３・・・第１の回
転体、８・・・励磁装置、９・・・電磁コイル、１１・
・・第２の回転体、１２…可動片、１３・・・板ばね、
１７，１８，２４・・・弧状孔、２１，２２，２３，２
６，２７・・・リング状部村、３１，３２・・・凹部、
３３，３４・・・周方向溝、３５，３６・・・結合部材
、３９，４０・・・連結部。 多２図 多３図 多／図 髪ょ図 努づ図 穿る図 第７図 弟８図 多？図Fig. 1 is a sectional view of a conventional electromagnetic clutch, Fig. 2 is a reduced sectional view taken along line 0-D in Fig. 1, and Fig. 3 is a cross-sectional view taken along line 0-D in Fig. 1.
FIG. 4 is a front view of a rotating body showing an embodiment of the electromagnetic clutch manufactured by the manufacturing method according to the present invention, and FIG. 5 is a cross section taken along line V-V in FIG. 4. Figure, 6th
The figure is a sectional view taken along the Machi-W line in FIG. 4, FIG. 7 is a front view of a rotating body showing another embodiment of the present invention, and FIG. 8 is a sectional view taken along the side line in FIG. FIG. 9 is a sectional view taken along the line M in FIG. 7. DESCRIPTION OF SYMBOLS 1... Casing as a fixed part, 3... First rotating body, 8... Excitation device, 9... Electromagnetic coil, 11...
... second rotating body, 12... movable piece, 13... plate spring,
17, 18, 24... arcuate hole, 21, 22, 23, 2
6, 27... ring-shaped part village, 31, 32... recessed part,
33, 34... Circumferential groove, 35, 36... Connecting member, 39, 40... Connecting portion. Many 2 figures, many 3 figures, many figures/Figure 7, younger brother, 8 figures? figure

Claims (1)

【特許請求の範囲】 １ 磁性材料からなる部分を有し駆動手段に連結された
第１の回転体と、この第１の回転体の磁性材料部分に対
向された磁性材料からなる部分を有し被駆動手段に連結
された第２の回転体と、これらの第１、第２の回転体を
含んで磁気回路を構成させる電磁コイルとを備え、前記
第１、第２の回転体の少なくとも一方が磁性材料からな
り所定巾の間隙を置いて同心状に配置された複数のリン
グ状部材で構成された電磁クラツチの製造方法において
、前記間隙の円周方向の所定位置において互いに隣接す
るリング状部材にまたがつた凹部を所定間隔で複数個形
成するとともに、これらの凹部の内周面にそれぞれ周方
向溝を形成し、かつこれらの凹部内に、非磁性材料から
なり前記リング状部材より変形抵抗の小さい結合部材を
それぞれ挿入し、これらの結合部材を加圧塑性変形させ
て前記円周溝内に流入させ、この塑性変形された結合部
材の剪断力と緊迫力とにより隣接したリング状部材の結
合力を生じさせたことを特徴とする電磁クラツチの製造
方法。 ２ 前記特許請求の範囲第１項に記載の電磁クラツチの
製造方法において、前記各リング状部材は、前記凹部が
形成される部分において連続された一体物で構成された
ことを特徴とする電磁クラツチの製造方法。[Claims] 1. A first rotating body having a portion made of a magnetic material and connected to a driving means, and a portion made of a magnetic material facing the magnetic material portion of the first rotating body. A second rotary body connected to a driven means, and an electromagnetic coil that includes the first and second rotary bodies to constitute a magnetic circuit, and at least one of the first and second rotary bodies. A method for manufacturing an electromagnetic clutch comprising a plurality of ring-shaped members made of a magnetic material and arranged concentrically with a gap of a predetermined width, the ring-shaped members adjacent to each other at a predetermined position in the circumferential direction of the gap. A plurality of recesses are formed at predetermined intervals, and a circumferential groove is formed on the inner circumferential surface of each of these recesses, and a ring-shaped member made of a non-magnetic material has a deformation resistance in the recess. A small coupling member is inserted into the circumferential groove, and these coupling members are plastically deformed under pressure to flow into the circumferential groove, and the shearing force and tension force of the plastically deformed coupling members cause the adjacent ring-shaped members to A method for manufacturing an electromagnetic clutch characterized by generating a bonding force. 2. The method for manufacturing an electromagnetic clutch according to claim 1, wherein each of the ring-shaped members is formed of a continuous integral piece in a portion where the recess is formed. manufacturing method.