JPS6149907B2 - - Google Patents
Info
- Publication number
- JPS6149907B2 JPS6149907B2 JP9456779A JP9456779A JPS6149907B2 JP S6149907 B2 JPS6149907 B2 JP S6149907B2 JP 9456779 A JP9456779 A JP 9456779A JP 9456779 A JP9456779 A JP 9456779A JP S6149907 B2 JPS6149907 B2 JP S6149907B2
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic
- boss
- magnetic
- output shaft
- yoke
- 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.)
- Expired
Links
- 230000005284 excitation Effects 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000009958 sewing Methods 0.000 description 9
- 239000004020 conductor Substances 0.000 description 5
- 239000000696 magnetic material Substances 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 230000004043 responsiveness Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/11—Structural association with clutches, brakes, gears, pulleys or mechanical starters with dynamo-electric clutches
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
【発明の詳細な説明】
この発明は電磁継手装置の改良に関するもの
で、特に高頻度の運転停止と高応答な可変速特性
を要求される電動機、たとえばミシンを駆動する
電動機に最適な電磁継手装置を提供するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an electromagnetic coupling device, and is particularly suitable for electric motors that require frequent stoppages and highly responsive variable speed characteristics, such as electric motors that drive sewing machines. It provides:
従来から、ミシンすなわち工業用ミシンの駆動
には、高頻度の運転停止が可能な摩擦式クラツチ
およびブレーキを有するモートル、いわゆるクラ
ツチモートルと呼ばれるものが広く使用されてい
る。 BACKGROUND ART Conventionally, so-called clutch motors, which have a friction type clutch and brake that can be stopped frequently, have been widely used to drive sewing machines, that is, industrial sewing machines.
このクラツチモートルにミシン針の定位置停止
機能すなわち位置決め低速駆動機能を付加した自
動停止針装置（ニードルポジシヨナー）付クラツ
チモートルは、ミシンの自動糸切り機能の出現と
相まつて急速に普及し、縫製作業の合理化に大き
く貢献している。 The clutch motor with an automatic stop needle device (needle positioner), which has a function to stop the sewing machine needle in a fixed position, that is, a low-speed drive function for positioning, has rapidly become popular with the advent of automatic thread trimming functions in sewing machines, and has become popular in sewing machines. This greatly contributes to streamlining work.
しかし、この自動停針装置付クラツチモートル
は、摩擦式クラツチおよびブレーキを制御して、
クラツチのスリツプ具合を変えることにより、可
変速特性を得るものであるため、低速状態におけ
る位置決め速度および糸切り速度の最適値の決定
が困難であるとともに、クラツチの摩擦材の消耗
が激しく短期間に保守点検を必要とする欠点があ
つた。 However, this clutch motor with automatic needle stop device controls the friction clutch and brake.
Since variable speed characteristics are obtained by changing the slip condition of the clutch, it is difficult to determine the optimal values for positioning speed and thread cutting speed in low speed conditions, and the friction material of the clutch is severely worn out in a short period of time. There were defects that required maintenance and inspection.
そこで、この欠点を除去し、さらに良好な可変
速特性と低速特性の両方の機能を簡単な構成で得
なれるようにする目的のもとに、ミシンを非接触
式の可変速電動機すなわち電磁継手を備えた電動
機で駆動することが提案され、米国特許第
3910211号（日本特許出願公開；特開昭49―96222
号）に述べられている。 Therefore, in order to eliminate this drawback and to be able to obtain both better variable speed characteristics and low speed characteristics with a simple configuration, we installed a non-contact type variable speed electric motor, that is, an electromagnetic coupling. It was proposed to be driven by an electric motor with a
No. 3910211 (Japanese Patent Application Publication; JP-A-49-96222
No.).
しかしながら、この米国特許第3910211号に示
された電磁継手は、電動機の回転軸に固着したフ
ライホイールの端面にドラムを形成して電磁継手
の駆動体とし、この駆動体の上記ドラムの内面に
空隙を介して対向する磁極片と、この磁極片を支
えるヨーク部とからなる部分断面がコ字状の磁極
を出力軸に固着して電磁継手の従動体とし、そし
て上記電動機のハウジングの一部に固着した励磁
コイルを上記従動体のコ字状の磁極の中に空隙を
置いて配置しているものである。 However, the electromagnetic joint shown in US Pat. No. 3,910,211 uses a drum as a driving body of the electromagnetic joint by forming a drum on the end face of a flywheel fixed to the rotating shaft of an electric motor, and a void is formed on the inner surface of the drum of this driving body. A magnetic pole with a U-shaped partial cross section, consisting of a magnetic pole piece facing each other through a yoke portion supporting the magnetic pole piece, is fixed to an output shaft as a driven body of an electromagnetic coupling, and is attached to a part of the housing of the motor. A fixed excitation coil is placed within the U-shaped magnetic pole of the driven body with an air gap.
したがつて、この米国特許のものは、電磁継手
を構成するドラムを出力軸に固着し、電磁継手の
誘導子を電動機の回転軸に固着したタイプのもの
と比較すれば、回転軸側の慣性に対して出力軸側
の慣性が小さくなると一応考えられる。しかし、
上記米国特許のように、ドラムを回転軸側に配置
しても、磁極が出力軸に固着されていると、この
磁極は励磁コイルにより誘導される磁束を損失な
く有効に通すための機能を有することから、所定
の磁路断面積を必要とされ、必然的に大きな慣性
体となつてしまう。この出力軸側の慣性はそれほ
ど小さくならず、出力軸の発生トルクと慣性との
比（出力軸トルク／出力軸の慣性）は小さなもの
となり、0.1〜0.2秒程度の急激な加速および減速
特性を要求される用途、たとえばミシンを駆動す
る電動機としては実用にならない欠点がある。 Therefore, compared to a type in which the drum constituting the electromagnetic coupling is fixed to the output shaft and the inductor of the electromagnetic coupling is fixed to the rotating shaft of the motor, this U.S. patent has less inertia on the rotating shaft side. It is believed that the inertia on the output shaft side is smaller than that of the output shaft. but,
As in the above US patent, even if the drum is placed on the rotating shaft side, if the magnetic pole is fixed to the output shaft, this magnetic pole has the function of effectively passing the magnetic flux induced by the excitation coil without loss. Therefore, a predetermined magnetic path cross-sectional area is required, which inevitably results in a large inertial body. This inertia on the output shaft side is not so small, and the ratio of the output shaft generated torque and inertia (output shaft torque/output shaft inertia) is small, resulting in rapid acceleration and deceleration characteristics of about 0.1 to 0.2 seconds. It has drawbacks that make it impractical for the required applications, such as electric motors that drive sewing machines.
この発明はかかる欠点を除去し、高頻度の運転
停止と高応答な可変速特性が要求される用途に適
合する新規な改良された電動継手装置を提供する
ことを目的としたもので、電磁継手の構成要素を
合理的にかつ効果的に配置して、回転軸に固着さ
れたフライホイールを兼ねる電磁継手の駆動体は
磁気回路を形成す磁極体とし、そして上記駆動体
の磁気空隙に配置される渦電流発生板と、これを
出力軸に固着させるボスとで電磁継手の従動体と
構成することにより、駆動側と従動側との慣性比
を大きくし、かつ上記ボスに電磁ブレーキの可動
板を取付け、これにより可動板を取付けるための
部品を省略し、軸方向寸法の短縮化と、従動側の
低慣性化を助けるようにしたことを特徴とするも
のである。 The present invention aims to eliminate such drawbacks and provide a new and improved electric coupling device suitable for applications requiring frequent shutdowns and highly responsive variable speed characteristics. By arranging the components in a rational and effective manner, the driving body of the electromagnetic joint that also serves as a flywheel fixed to the rotating shaft is a magnetic pole body forming a magnetic circuit, and the driving body is arranged in the magnetic gap of the driving body. By configuring the driven body of the electromagnetic coupling with an eddy current generating plate and a boss that fixes it to the output shaft, the inertia ratio between the drive side and the driven side is increased, and the movable plate of the electromagnetic brake is attached to the boss. This feature is characterized in that the parts for attaching the movable plate are omitted, helping to shorten the axial dimension and lower the inertia of the driven side.
以下この発明の詳細を図面に従つて説明する。
図面はこの発明による電磁継手装置を備えた電動
機の実施例を一部断面で表わした正面図である。 The details of this invention will be explained below with reference to the drawings.
The drawing is a partially sectional front view of an embodiment of a motor equipped with an electromagnetic coupling device according to the present invention.
図面において、１は電動機のハウジングで、ス
テータ２を支持するフレーム３と、回転子４が固
着された回転軸５の一方の軸受け６を支持する第
１のブラケツト７と、回転軸５の他方の軸受け８
を支持する第２のブラケツト９から構成されてい
る。１０は上記第２のブラケツト９より外方に突
出する上記回転軸５の端部に固着した電磁継手の
回転される駆動体である。 In the drawings, reference numeral 1 denotes a housing of an electric motor, which includes a frame 3 that supports a stator 2, a first bracket 7 that supports a bearing 6 on one side of a rotating shaft 5 to which a rotor 4 is fixed, and a first bracket 7 that supports a bearing 6 on the other side of the rotating shaft 5. Bearing 8
It consists of a second bracket 9 that supports the. Reference numeral 10 denotes a driving body for rotating an electromagnetic joint fixed to the end of the rotating shaft 5 that projects outward from the second bracket 9.
この駆動体１０は中心部に上記回転軸５が挿入
されてキー溝１１およびボルト１２による止め座
１３等で固着される取付部１４を含む水平部１５
と、この水平部１５の外端から径方向に突出した
鉛直部１６と、この鉛直部１６の先端から円周方
向に沿つて軸方向に爪形の突出した第１の磁極片
１７と、この第１の磁極片１７に空隙を置いて交
互にかみ合うように配置され、非磁性材のリング
１８により上記第１の磁極片１７と一体的に固着
した第２の磁極片１９とで形成されている部分断
面がコ字形の磁極体２０を有している。また、上
記駆動体１０は上記磁極片１７，１９の外周に狭
い所定の空隙２１を置いて同心円状に配置され、
非磁性材の支持具２２により上記第２の磁極片１
９に固着した第１の磁路形成体２３を有してい
る。 This drive body 10 has a horizontal part 15 including a mounting part 14 in the center of which the rotating shaft 5 is inserted and fixed with a keyway 11 and a retaining seat 13 formed by a bolt 12.
A vertical portion 16 protrudes radially from the outer end of the horizontal portion 15, a first magnetic pole piece 17 protrudes axially in the circumferential direction from the tip of the vertical portion 16, and The second magnetic pole pieces 19 are arranged so as to alternately engage with the first magnetic pole pieces 17 with a gap therebetween, and are integrally fixed to the first magnetic pole pieces 17 by a ring 18 made of a non-magnetic material. The magnetic pole body 20 has a U-shaped partial cross section. Further, the driving body 10 is arranged concentrically with a narrow predetermined gap 21 around the outer periphery of the magnetic pole pieces 17 and 19,
The second magnetic pole piece 1 is supported by a support 22 made of non-magnetic material.
It has a first magnetic path forming body 23 fixed to 9.
従つて、駆動体１０はこれら磁極体２０、第１
の磁路形成体２３、および支持具２２により部分
断面が〓字形に構成され、後述する極く一部の磁
路形成体を除く他の全ての磁路形成体を備える結
果、上記回転軸５のフライホイールの十分な役目
を兼ねている。そして上記非磁極性材の支持具２
２は円周方向に複数本のリブ２４が配列されてリ
ング状に形成されており、この支持具２２自身が
冷却風を矢印のように流す羽根の役目を兼ねてい
る。 Therefore, the driver 10 has these magnetic pole bodies 20, the first
The magnetic path forming body 23 and the support 22 form a cross section in a cross section, and as a result of having all the magnetic path forming bodies except for a very small number of magnetic path forming bodies described later, the rotating shaft 5 It also functions as a flywheel. And the support 2 of the non-magnetic material
2 is formed into a ring shape with a plurality of ribs 24 arranged in the circumferential direction, and this support 22 itself also serves as a blade to flow cooling air in the direction of the arrow.
２５は上記磁極体２０の中の空間部２６に所定
の空隙を置いて設けた励磁コイルで、コイル枠２
７および第２の磁路形成体２８を介して上記ブラ
ケツト９に困定される磁路形成体２８は上記磁極
体２０の開口部２９の内側に位置して磁路を閉成
するもので、回転される上記駆動体１０の磁路と
比較すれば極く一部の限られたものであり、そし
て、上記ブラケツト９の一部を突出させ、この突
出部で固定の磁路を形成すれば省略することもで
きるものである。 Reference numeral 25 denotes an excitation coil provided in the space 26 in the magnetic pole body 20 with a predetermined gap, and the coil frame 2
7 and the second magnetic path forming body 28, the magnetic path forming body 28 is located inside the opening 29 of the magnetic pole body 20 and closes the magnetic path, Compared to the magnetic path of the rotating driving body 10, it is only a limited part, and if a part of the bracket 9 is made to protrude and a fixed magnetic path is formed with this protrusion, then It can also be omitted.
３０は出力軸であり、その一方は上記ハウジン
グ１に連結している第３のブラケツト３１に軸受
け３２を介して支承され、他方は上記磁極体２０
の水平部１５で囲まれる筒穴３３に取付けた軸受
け３４により支承されている。３５は薄肉の導電
材をプレス等によりカツプ状に絞り加工して形成
した渦電流発生板で、その周側部の水平部３６は
上記磁極片１７，１９と磁路形成体２３の間の空
隙２１なに配置され、底部の鉛直部３７は上記軸
受け３２と３４の間に位置する上記出力軸３０に
固着されたボス３８の径方向に延びる円盤部３９
に連結されており、これら渦電流発生板３５とボ
ス３８により部分断面がコ字形の電磁継手の従動
体４０を構成している。上記ボス３８は導電材で
形成することにより、渦電流発生板３５の薄肉に
よる断面積の減少を補ない、発生トルクが低下し
ないように作用するエンドリング効果の役目を兼
ねさせることができるとともに、導電材たとえば
アルミニウムまたは銅のような良導電材は熱伝達
特性もよく、放熱板としての役目も一緒に兼ねる
ことになる。 30 is an output shaft, one of which is supported via a bearing 32 by a third bracket 31 connected to the housing 1, and the other is supported by the magnetic pole body 20.
It is supported by a bearing 34 attached to a cylindrical hole 33 surrounded by a horizontal portion 15. Reference numeral 35 denotes an eddy current generating plate formed by drawing a thin conductive material into a cup shape using a press or the like, and a horizontal portion 36 on the circumferential side of the plate forms an air gap between the magnetic pole pieces 17, 19 and the magnetic path forming body 23. 21, the bottom vertical part 37 is a disk part 39 extending in the radial direction of the boss 38 fixed to the output shaft 30 located between the bearings 32 and 34.
The eddy current generating plate 35 and the boss 38 constitute a driven body 40 of an electromagnetic joint having a U-shaped partial cross section. By forming the boss 38 with a conductive material, it can compensate for the reduction in cross-sectional area due to the thin wall of the eddy current generating plate 35, and also serve as an end ring effect that prevents the generated torque from decreasing. A conductive material such as aluminum or copper has good heat transfer properties and also serves as a heat sink.
４１は電磁ブレーキであり、その励磁コイル４
２は上記ブラケツト３１に固着された部分断面が
コ字形のヨーク４３の内部に収納されている。４
４は上記ヨーク４３の開口部を塞ぐように取付け
たブレーキライニング、４５はこのブレーキライ
ニング４４と対向するように配置され、上記ボス
３８の円盤部３９に薄い板状のバネ４６を介して
取付けられた磁性材の可動板である。上記電磁ブ
レーキ４１は励磁コイル４２が付勢され、その磁
束がヨーク４３を通つて磁性材の可動板４５に流
れると、可動板４５がバネ４６の力に抗してヨー
ク４３に吸引されることにより、制動力を発生す
るようになつている。なお、ヨーク４３はブラケ
ツト３１と別に設けないで、ブラケツト３１に直
接的に形成することは可能である。 41 is an electromagnetic brake, and its excitation coil 4
2 is housed inside a yoke 43 which is fixed to the bracket 31 and has a U-shaped partial cross section. 4
4 is a brake lining installed to close the opening of the yoke 43, and 45 is arranged to face the brake lining 44, and is attached to the disk portion 39 of the boss 38 via a thin plate-shaped spring 46. It is a movable plate made of magnetic material. In the electromagnetic brake 41, when the excitation coil 42 is energized and the magnetic flux flows through the yoke 43 to the movable plate 45 made of magnetic material, the movable plate 45 is attracted to the yoke 43 against the force of the spring 46. It is designed to generate braking force. Note that the yoke 43 can be formed directly on the bracket 31 without being provided separately from the bracket 31.
４７，４８，４９，５０，５１は上記支持具２
２が形成する羽根により生じる冷却風を矢印のよ
うに電動機の反負荷側から負荷側に流すための通
風孔で、電動機のステータ２の部分、電磁継手の
部分、および電磁ブレーキ４１の部分を冷却する
ように、ハウジング１を構成するフレーム３とブ
ラケツト７，９，３１の適所に設けている。５２
は電動機を取付けるための取付脚である。 47, 48, 49, 50, 51 are the above-mentioned supports 2
This is a ventilation hole that allows the cooling air generated by the blades formed by the blades 2 to flow from the anti-load side of the motor to the load side as shown by the arrow, and cools the stator 2 part, the electromagnetic joint part, and the electromagnetic brake 41 part of the motor. The brackets 7, 9, and 31 are provided at appropriate positions on the frame 3 and the brackets 7, 9, and 31 that make up the housing 1 so as to do so. 52
are mounting legs for mounting the electric motor.
以上の構成において、いま電動機の回転軸５が
フライホイールを兼ねる電磁継手の駆動体１０を
伴つて回転しているものとする。この状態で操作
者の指令により電磁継手の励磁コイル２５に電流
を流すと、駆動体１０の第１の磁極片１７から第
１の磁路形成体２３を円周方向に通り第２の磁極
片１９に至る破線で示す磁路に沿つて磁束が発生
し、従動体４０の渦電流発生板３５が上記磁束を
切ることになる。このため渦電流発生板３５には
渦電流が生じ、その電磁力がボス３８を介して出
力軸に伝達し、この出力軸に連結される負荷たと
えばミシンを短時間のうちに急加速して駆動す
る。 In the above configuration, it is assumed that the rotating shaft 5 of the electric motor is currently rotating with the driving body 10 of the electromagnetic joint that also serves as a flywheel. In this state, when a current is applied to the excitation coil 25 of the electromagnetic joint according to an operator's command, it passes from the first magnetic pole piece 17 of the driving body 10 through the first magnetic path forming body 23 in the circumferential direction to the second magnetic pole piece. A magnetic flux is generated along the magnetic path shown by the broken line ending at 19, and the eddy current generating plate 35 of the driven body 40 cuts the magnetic flux. Therefore, an eddy current is generated in the eddy current generating plate 35, and the electromagnetic force is transmitted to the output shaft via the boss 38, and a load connected to the output shaft, such as a sewing machine, is rapidly accelerated and driven. do.
そして、操作者の指令による信号で上記励磁コ
イル２５の電流を加減することにより、従動体４
０に発生するトルクが調節され、任意の所定速度
で運転できる。 By adjusting the current of the excitation coil 25 in response to a signal from an operator's command, the driven body 4
The torque generated at 0 is adjusted, allowing operation at any predetermined speed.
また、上記励磁コイル２５に流れる電流を断つ
と従動体４０への伝達力が消滅し、このときに電
磁ブレーキ４１を作動し、上記したように可動板
４５をブレーーキライニング４４に吸着させると
制動力が発生して、出力軸３０の回転を急速に減
じ停止する。 Further, when the current flowing through the excitation coil 25 is cut off, the force transmitted to the driven body 40 disappears, and at this time, when the electromagnetic brake 41 is activated and the movable plate 45 is attracted to the brake lining 44 as described above, A braking force is generated, and the rotation of the output shaft 30 is rapidly reduced and stopped.
なお、出力軸３０に連結される負荷の制御は、
負荷の種類によつて変わり、この発明と直接的に
関係しないので、説明を省略するが、たとえば、
負荷がミシンの場合には、上記した米国特許第
3910211号り示されているように制御すればよい
ものである。 Note that the control of the load connected to the output shaft 30 is as follows:
The explanation will be omitted since it depends on the type of load and is not directly related to this invention, but for example,
If the load is a sewing machine, the above-mentioned U.S. patent no.
It should be controlled as shown in No. 3910211.
この発明は以上の実施例の説明から明らかなよ
うに、回転軸５に固着された磁気回路を形成する
電磁継手の駆動体１０および電磁継手の励磁コイ
ル２５を有し、かつこの駆動体の磁気空隙２１に
配置された渦電流発生板３５と、この渦電流発生
板３５を出力軸３０に固着させた熱伝導性の導電
材のボス３８とで電磁継手の従動体４０を形成
し、上記ボスには電磁ブレーキ４１のヨーク４３
に対向し、上記出力軸３０の軸方向に上記ボス３
８に対して相対的に移動可能でかつボス３８に対
しして回転不可能に可動板４５を装着し、上記励
磁コイル２５の電流を断つた状態で前記電磁プレ
ーキ４１の励磁コイルを付勢させたとき上記ボス
３８の可動板４５がそのボス３８からヨーク４３
側に移動しヨークに吸着されて回転が制動される
構成にしたので、駆動体１０に対する従動体４０
の重量を軽くすることができ、電磁継手の励磁コ
イル２５と電磁ブレーキ４１の励磁コイルの励磁
を制御することにより電磁力によつて高い応答性
で従動体４０の渦電流発生板３５にトルクを発生
させて回転させたり、あるいは高い応答性で従動
軸４０全体ではなくこれに移動自在に設けられた
可動板４５を電磁ブレーキ４１のヨーク４３に吸
着させて回転を停止させたりすることができる。
つまりこの発明は駆動側と従動側との慣性比が大
きく、しかも従動側の発生トルクと慣性との比も
大きくでき、急激に高頻度に加わる伝達トルクや
負荷トルクに耐え、回転軸の速度低下を防止でき
るとともに高い応答性でブレーキを働かせること
ができるものである。 As is clear from the description of the embodiments above, the present invention has a driving body 10 of an electromagnetic joint that forms a magnetic circuit fixed to a rotating shaft 5, and an excitation coil 25 of the electromagnetic joint, and the magnetic field of this driving body The eddy current generating plate 35 disposed in the air gap 21 and the boss 38 made of a thermally conductive material that fixes the eddy current generating plate 35 to the output shaft 30 form a driven body 40 of the electromagnetic joint. The yoke 43 of the electromagnetic brake 41 is
the boss 3 in the axial direction of the output shaft 30
A movable plate 45 is mounted so as to be movable relative to the boss 38 and not rotatable with respect to the boss 38, and the excitation coil of the electromagnetic brake 41 is energized while the current of the excitation coil 25 is cut off. When the movable plate 45 of the boss 38 moves from the boss 38 to the yoke 43
Since the configuration is such that the rotation is braked by moving to the side and being attracted to the yoke, the driven body 40 relative to the driving body 10
By controlling the excitation of the excitation coil 25 of the electromagnetic joint and the excitation coil of the electromagnetic brake 41, torque can be applied to the eddy current generation plate 35 of the driven body 40 with high responsiveness by electromagnetic force. Alternatively, with high responsiveness, the movable plate 45 movably provided on the driven shaft 40 rather than the entire driven shaft 40 can be attracted to the yoke 43 of the electromagnetic brake 41 to stop the rotation.
In other words, this invention has a large inertia ratio between the driving side and the driven side, as well as a large ratio between the generated torque and inertia on the driven side, and can withstand transmission torque and load torque that are applied rapidly and frequently, and reduce the speed of the rotating shaft. In addition to being able to prevent this, the brakes can be applied with high responsiveness.
また、この発明によれば、電磁ブレーキの可動
板はボス３８を利用して取り付けているため可動
板を取付けるための別部品を省略でき、軸方向寸
法の短縮化が可能になるとともに、渦電流発生板
３５を出力軸に固着するための上記ボス３８が、
熱伝導性でしかも導電材から形成されているか
ら、回転駆動時に渦電流発生板３５に発生する熱
や電磁ブレーキ作動時に可動板４５に発生する摩
擦熱を回転に伴つて放散させる放熱板の作用を有
し、過電流発生板と可動板の熱による変形を抑制
し、渦電流発生板による安定したトルクの発生
と、可動板の摩耗寿命を長くすることが可能にな
るものである。 Further, according to the present invention, since the movable plate of the electromagnetic brake is attached using the boss 38, a separate part for attaching the movable plate can be omitted, and the axial dimension can be shortened, and the eddy current The boss 38 for fixing the generator plate 35 to the output shaft is
Since it is made of a thermally conductive and electrically conductive material, it acts as a heat sink to dissipate the heat generated in the eddy current generating plate 35 during rotational driving and the frictional heat generated in the movable plate 45 when the electromagnetic brake is activated as it rotates. This suppresses deformation of the overcurrent generating plate and the movable plate due to heat, making it possible to generate stable torque by the eddy current generating plate and extend the wear life of the movable plate.
また、この発明によれば、電磁ブレーキの可動
板を取付けるための別部品を省略でき、軸方向寸
法の短縮化が可能になるとともに、ボスはブレー
キ作動時に発生する摩擦熱を放散させる放熱板の
作用を果し、可動板の摩耗寿命を長くすることも
可能なるものである。 Further, according to this invention, a separate part for attaching the movable plate of the electromagnetic brake can be omitted, making it possible to shorten the axial dimension. This also makes it possible to extend the wear life of the movable plate.
図はこの発明による電磁継手装置を備えた電動
機の実施例を一部断面で表わした正面図である。
図中、５は電動機の回転軸、１０は電磁継手の
駆動体、１７，１９は磁極片、２０は磁極体、２
３，２８は磁路形成体、３０は出力軸、３５は渦
電流発生板、３８はボス、４０は電磁継手の従動
体、４１は電磁ブレーキ、４５は可動板である。
The figure is a partially sectional front view of an embodiment of a motor equipped with an electromagnetic coupling device according to the present invention. In the figure, 5 is the rotating shaft of the electric motor, 10 is the driver of the electromagnetic joint, 17 and 19 are the magnetic pole pieces, 20 is the magnetic pole body, 2
3 and 28 are magnetic path forming bodies, 30 is an output shaft, 35 is an eddy current generating plate, 38 is a boss, 40 is a follower of an electromagnetic joint, 41 is an electromagnetic brake, and 45 is a movable plate.
Claims (1)
磁継手の駆動体１０および電磁継手の励磁コイル
２５を有し、かつこの駆動体１０の磁気空隙２１
に配置された渦電流発生板３５と、この渦電流発
生板３５を出力軸３０に固着させた熱伝導性の導
電材のボス３８とで電磁継手の従動体４０を形成
し、上記ボス３８には電磁ブレーキ４１のヨーク
４３に対向し、上記出力軸３０の軸方向に上記ボ
ス３８に対して移動可能でかつボス３８に対して
回転不可能に可動板４５を装着し、上記励磁コイ
ル２５の電流を断つた状態で前記電磁ブレーキ４
１の励磁コイルを付勢させたとき上記ボス３８の
可動板４５がそのボス３８からヨーク４３側に移
動しヨーク４３に吸着されて回転が制動される構
成である電磁継手装置。1 has a driving body 10 of an electromagnetic joint that forms a magnetic circuit fixed to the rotating shaft 5 and an excitation coil 25 of the electromagnetic joint, and has a magnetic gap 21 of this driving body 10.
A driven member 40 of the electromagnetic joint is formed by an eddy current generating plate 35 arranged at is mounted with a movable plate 45 that faces the yoke 43 of the electromagnetic brake 41 and is movable relative to the boss 38 in the axial direction of the output shaft 30 and non-rotatable relative to the boss 38. The electromagnetic brake 4 with the current cut off
The electromagnetic coupling device is configured such that when one excitation coil is energized, the movable plate 45 of the boss 38 moves from the boss 38 to the yoke 43 side and is attracted to the yoke 43 to brake the rotation.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9456779A JPS5619375A (en) | 1979-07-25 | 1979-07-25 | Electromagnetic coupling device |
| DE19803027727 DE3027727A1 (en) | 1979-07-25 | 1980-07-22 | ELECTROMAGNETIC COUPLING |
| IT49306/80A IT1147015B (en) | 1979-07-25 | 1980-07-23 | ELECTROMAGNETIC CLUTCH DEVICE |
| US06/171,856 US4410819A (en) | 1979-07-25 | 1980-07-24 | Electromagnetic coupling device |
| FR8016359A FR2462615B1 (en) | 1979-07-25 | 1980-07-24 | ELECTROMAGNETIC COUPLING DEVICE |
| GB8024457A GB2057199B (en) | 1979-07-25 | 1980-07-25 | Electromagnetic coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9456779A JPS5619375A (en) | 1979-07-25 | 1979-07-25 | Electromagnetic coupling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5619375A JPS5619375A (en) | 1981-02-24 |
| JPS6149907B2 true JPS6149907B2 (en) | 1986-10-31 |
Family
ID=14113884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9456779A Granted JPS5619375A (en) | 1979-07-25 | 1979-07-25 | Electromagnetic coupling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5619375A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3631928C2 (en) * | 1986-09-19 | 1994-06-09 | Aicher Max | Process for the production of rolled steel products |
| JPH0672259B2 (en) * | 1987-08-05 | 1994-09-14 | 株式会社神戸製鋼所 | Manufacturing method of machine parts machined after induction hardening |
-
1979
- 1979-07-25 JP JP9456779A patent/JPS5619375A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5619375A (en) | 1981-02-24 |
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