JPH0781595B2 - Excitation device for electromagnetic clutch - Google Patents
Excitation device for electromagnetic clutchInfo
- Publication number
- JPH0781595B2 JPH0781595B2 JP62033306A JP3330687A JPH0781595B2 JP H0781595 B2 JPH0781595 B2 JP H0781595B2 JP 62033306 A JP62033306 A JP 62033306A JP 3330687 A JP3330687 A JP 3330687A JP H0781595 B2 JPH0781595 B2 JP H0781595B2
- Authority
- JP
- Japan
- Prior art keywords
- bobbin
- main member
- exciting coil
- yoke main
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
- F16D27/108—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members
- F16D27/112—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members with flat friction surfaces, e.g. discs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D2027/008—Details relating to the magnetic circuit, or to the shape of the clutch parts to achieve a certain magnetic path
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Electromagnets (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電磁クラツチの励磁装置に係り、特に励磁コイ
ルを巻装するボビンの改良に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exciting device for an electromagnetic clutch, and more particularly to improvement of a bobbin around which an exciting coil is wound.
従来の電磁クラツチの励磁装置は、実公昭60−39540号
に記載されているように、断面略Ｕ字形環状に樹脂で生
形されたボビンに励磁コイルを巻装してから継鉄主部材
の中に収納した後、励磁コイルと継鉄主部材の間に樹脂
性絶縁物を注入し硬化処理を行ない、ボビンに巻装した
励磁コイルを継鉄主部材に絶縁固着していた。しかし、
この様な従来技術は、励磁コイルを継鉄主部材内の最適
位置に設定できるような軸方向及び径方向に対しての位
置決め手段が考慮されていないため、作業のバラツキ等
によつては、励磁コイルが継鉄主部材内で径方向に片寄
つたり、軸方向に浮き上がつたりし、その結果励磁コイ
ルの外周面が継鉄主部材の外側フランジ部と接触して絶
縁不良を起こしたり、また励磁コイルが継鉄主部材の開
口部端面から出張り入力回転体と接触したり、更には、
樹脂性絶縁物の肉厚が不均一となりクラツクが入つたり
継鉄主部材のリード線取出穴とグロメツトの隙間から樹
脂性絶縁物が漏れる等の不具合ポテンシヤルがあり、こ
れらの点に対しては十分な配慮が欠けていた。As described in Japanese Utility Model Publication No. 60-39540, a conventional electromagnetic clutch exciter is constructed by winding an exciting coil around a bobbin formed of resin in a substantially U-shaped section and then winding the exciting coil of the yoke main member. After being housed inside, a resinous insulating material was injected between the exciting coil and the yoke main member to carry out curing treatment, and the exciting coil wound around the bobbin was fixed to the yoke main member by insulation. But,
Such a conventional technique does not consider positioning means in the axial direction and the radial direction such that the exciting coil can be set at the optimum position in the yoke main member, so that due to variations in work, etc., The exciting coil is radially offset in the yoke main member or floats in the axial direction, and as a result, the outer peripheral surface of the exciting coil contacts the outer flange of the yoke main member, causing insulation failure. Or the excitation coil sticks out from the end face of the opening of the yoke main member and contacts the input rotating body.
There are some problems such as cracks in the resin insulation due to uneven thickness and leakage of the resin insulation from the gap between the lead wire extraction hole of the yoke main member and the grommet. It lacked sufficient consideration.
特に、樹脂性絶縁物の成形を加工状態で行なう、いわゆ
るインジエクシヨン成形やトランスフア成形での作業に
おいては、特にこの種の不具合が発生しやすかつた。In particular, in the work of so-called intrusion molding or transfer molding, in which the resinous insulating material is molded in a processed state, this kind of problem is likely to occur.
上記従来技術は、励磁コイルが継鉄主部材内において、
軸方向及び径方向に対して位置決めがなされていないた
め、作業のバラツキ等によつては、励磁コイルが継鉄主
部材の軸方向に浮き上がつたり、径方向に片寄つたりし
てしまうという点について十分な配慮がなされておら
ず、これらの不安定な励磁コイルの位置設定により、絶
縁不良や励磁コイルの継鉄主部材開口端からの出張り、
及び継鉄主部材に設けられたリード線取出穴からの樹脂
性絶縁物の漏れ等の不具合ポテンシヤルが潜在してい
た。In the above conventional technology, the exciting coil is in the main yoke member,
Since the positioning is not performed in the axial direction and the radial direction, the exciting coil may float in the axial direction of the yoke main member or may be offset in the radial direction due to variations in work. However, due to the unstable position setting of the exciting coil, insulation failure and protrusion from the opening end of the yoke main member of the exciting coil,
Also, there is a potential problem such as leakage of resinous insulating material from the lead wire extraction hole provided in the yoke main member.
本発明の目的は、絶縁不良や励磁コイルの継鉄主部材か
らの出張り及び樹脂性絶縁物の漏れ等の無い信頼性の高
い電磁クラツチの励磁装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a highly reliable excitation device for an electromagnetic clutch, which is free from insulation failure, protrusion from the yoke main member of the excitation coil, and leakage of resinous insulation.
上記目的は、ボビンの側壁の外周部に放射状に一体で複
数個の突出部を配設し、一方継鉄主部材に前記ボビンの
突出部と対向する位置に環状溝を設けておき、前記ボビ
ンを前記継鉄主部材内に収納した時、前記ボビンの突出
部を前記継鉄部材の環状溝に嵌め込むと共に、ボビンの
励磁コイル口出側側壁の一部に押部を設け、この押部と
継鉄主部材との間にグロメットを挾持することにより達
成される。The object is to dispose a plurality of projecting portions radially integrally on the outer peripheral portion of the side wall of the bobbin, and to provide an annular groove in the yoke main member at a position facing the projecting portion of the bobbin. Is housed in the yoke main member, the protruding portion of the bobbin is fitted into the annular groove of the yoke member, and a pressing portion is provided on a part of the exciting coil outlet side side wall of the bobbin. It is achieved by sandwiching a grommet between the main member and the yoke main member.
ボビンの外周部に設けた突出部は、継鉄主部材に設けた
環状溝内に嵌め込まれるため、該嵌め込み部は励磁コイ
ルを巻装したボビンが継鉄主部材の開口部方向へ浮き上
がるのを阻止し、かつ励磁コイルが傾いた状態で継鉄主
部材内に設定されることも無くなる。つまり、励磁コイ
ルは、継鉄主部材内に最適所定位置に設定される。それ
によつて、グロメツトと継鉄主部材のリード線取出孔と
の密着性は良くなり樹脂性絶縁物が漏れることも無く、
ボビンが継鉄主部材の開口部端からはみ出すことも無
く、また樹脂性絶縁物が継鉄主部材と励磁コイルの隙間
に均一に充填され絶縁不良となることも無い。更にグロ
メットが押部を押し戻す力が環状溝内に嵌め込まれた突
出部に作用し、突出部の弾性力とこの押し戻し力との作
用でボビンは軸方向にガッチリ、保持される。Since the protruding portion provided on the outer peripheral portion of the bobbin is fitted into the annular groove provided on the yoke main member, the fitting portion prevents the bobbin wound with the exciting coil from floating toward the opening of the yoke main member. It is also prevented from being set in the yoke main member in the state in which the magnet is blocked and the exciting coil is tilted. That is, the exciting coil is set at the optimum predetermined position in the yoke main member. As a result, the adhesion between the grommet and the lead wire extraction hole of the yoke main member is improved, and the resinous insulation does not leak,
The bobbin does not protrude from the end of the opening of the yoke main member, and the resinous insulating material does not uniformly fill the gap between the yoke main member and the exciting coil to cause insulation failure. Further, the force with which the grommet pushes back the pushing portion acts on the protrusion fitted in the annular groove, and the elastic force of the protrusion and the pushing back force act to firmly hold the bobbin in the axial direction.
〔実施例〕 以下、本発明の一実施例を第１図〜第３図により説明す
る。[Embodiment] An embodiment of the present invention will be described below with reference to FIGS.
第１図は本発明を用いて電磁クラツチの縦断面図であ
り、一部分を図示した回転機１のシヤフト２の軸端に結
合されたハブ３と、駆動源にＶベルトにて連結された磁
性材よりなる入力回転体４と、該入力回転体４と軸方向
に相対向する位置に設定された磁性材よりなる可動片５
と、該可動片５を前記ハブ３に結合するための板ばね６
とよりなる出力回転体７と、前記可動片５と入力回転体
４とを摩擦係合させるための励磁装置８とを具備してい
る。FIG. 1 is a longitudinal sectional view of an electromagnetic clutch according to the present invention. A part of which is a hub 3 connected to a shaft end of a shaft 2 of a rotating machine 1 and a magnetic source connected to a drive source by a V-belt. Input rotating body 4 made of material, and movable piece 5 made of magnetic material set at a position opposed to the input rotating body 4 in the axial direction.
And a leaf spring 6 for connecting the movable piece 5 to the hub 3.
And an exciting device 8 for frictionally engaging the movable piece 5 and the input rotating body 4 with each other.
そして、励磁装置８に内設された励磁コイル９に通電す
ると、図中に点線で示す如き主磁気回路Ａが形成され、
該主磁気回路Ａを流れる磁束により可動片５は入力回転
体４に吸着され、その摩擦係合力により入力回転体４の
駆動力を出力回転体７に伝える。また、励磁コイル９の
非通電時には、板ばね６のばね力により可動片５を入力
回転体４から開離し、入力回転体４からの駆動力を遮断
している。When the exciting coil 9 provided in the exciting device 8 is energized, a main magnetic circuit A as shown by a dotted line in the drawing is formed,
The movable piece 5 is attracted to the input rotary body 4 by the magnetic flux flowing through the main magnetic circuit A, and the frictional engagement force transmits the driving force of the input rotary body 4 to the output rotary body 7. Further, when the exciting coil 9 is not energized, the movable piece 5 is separated from the input rotary body 4 by the spring force of the leaf spring 6, and the driving force from the input rotary body 4 is shut off.
次に、励磁装置８に構成について述べる。10は継鉄主部
材であり、外側フランジ10aと内側フランジ10b及びこの
両フランジを継ぐ底板部10cとからなる断面略コ字形環
状に電磁鋼板をプレスにて一体成形されている。尚、底
板部10cには、励磁コイル９の末端に接続されたリード
線12をグロメツト13を介して外部に引き出すための取出
穴10dが設けられている。10dは、継鉄主部材10の外側フ
ランジ10aの内周部において、後述するボビン11の側壁
部11aに対向する位置に設けられた環状溝である。14は
支持部材であり、回転機１に励磁装置８を取付けるため
のものであり、前記継鉄主部材10の底板部10cの背面に
加締，溶接等で接合されている。Next, the structure of the excitation device 8 will be described. Reference numeral 10 denotes a yoke main member, and an electromagnetic steel plate is integrally formed by pressing into an annular shape having a substantially U-shaped cross section, which is composed of an outer flange 10a, an inner flange 10b, and a bottom plate portion 10c connecting both flanges. The bottom plate portion 10c is provided with an extraction hole 10d for extracting the lead wire 12 connected to the end of the exciting coil 9 to the outside through the grommet 13. Reference numeral 10d is an annular groove provided in the inner peripheral portion of the outer flange 10a of the yoke main member 10 at a position facing a side wall portion 11a of the bobbin 11 described later. Reference numeral 14 is a support member for attaching the exciting device 8 to the rotating machine 1, and is joined to the rear surface of the bottom plate portion 10c of the yoke main member 10 by caulking, welding or the like.
次に、11はボビンであり、第３図に示す様に、２つの中
空円板状の側壁部11a,11bと、該側壁部の内周を継ぐ円
筒部11cとから成る断面略Ｕ字形環状に樹脂で一体成形
されており、かつ継鉄主部材10の開口部側に位置する側
壁部11aの外周に放射状の突出部11dを複数個、一体成形
されている。ここで突出部11dの最外径φD1は、第２図
に示す如く前記継鉄主部材10の外側フランジ10aの内周
径φD2よりも大きくし、該複数個の突出部11dが前記環
状溝10dに嵌め込まれるよう設計されている。また、側
壁部11bの励磁コイル９の末端部引出穴11h,11iの略中間
位置には、軸方向に平行して伸びる２つの押部11j,11k
が一体成形されている。尚ボビン10の側壁部10a,10b及
び円筒部10cに設けられた多数の抜穴11e,11f,11gは、励
磁コイル９と樹脂性絶縁物15との接着面積を増加させ、
固着強度を向上させるためのものである。Next, 11 is a bobbin, and as shown in FIG. 3, an annular cross-section having a substantially U-shaped configuration including two hollow disk-shaped side wall portions 11a and 11b and a cylindrical portion 11c that joins the inner circumferences of the side wall portions. Is integrally molded with resin, and a plurality of radial projections 11d are integrally molded on the outer periphery of the side wall 11a located on the opening side of the yoke main member 10. Here, the outermost diameter φD 1 of the protrusion 11d is larger than the inner diameter φD 2 of the outer flange 10a of the yoke main member 10 as shown in FIG. It is designed to fit in the groove 10d. Further, two pushing portions 11j, 11k extending in parallel to the axial direction are provided at substantially intermediate positions of the end lead-out holes 11h, 11i of the exciting coil 9 of the side wall portion 11b.
Are integrally molded. The numerous holes 11e, 11f, 11g provided on the side wall portions 10a, 10b and the cylindrical portion 10c of the bobbin 10 increase the bonding area between the exciting coil 9 and the resinous insulator 15,
It is for improving the fixing strength.
このボビン11の断面略Ｕ字部内に励磁コイル９を断面矩
形環状に巻装すると共に、側壁部11bに設けた引出穴11
h,11iから励磁コイル９の末端部を引出し、リード線12
と接続した後グロメツト13を介して励磁コイル組立体が
完成する。The exciting coil 9 is wound in a rectangular ring shape in a substantially U-shaped section of the bobbin 11, and the extraction hole 11 provided in the side wall section 11b is formed.
Pull out the end of the exciting coil 9 from h and 11i, and
After connecting with the magnet, the exciting coil assembly is completed through the grommet 13.
該励磁コイル組立体を継鉄主部材10内へ第２図の如く挿
入し、前記ボビン11の突出部11dを継鉄主部材10内に設
けてある環状溝10d内に嵌着させ、軸方向に前記励磁コ
イル組立体を固定するとともに、前記グロメツト13を前
記押部11j,11kにて継鉄主部材10の底板部10cに押付け
る。The exciting coil assembly is inserted into the yoke main member 10 as shown in FIG. 2, and the projecting portion 11d of the bobbin 11 is fitted into the annular groove 10d provided in the yoke main member 10 so that the axial direction is increased. The exciting coil assembly is fixed to the bottom plate, and the grommet 13 is pressed against the bottom plate part 10c of the yoke main member 10 by the pressing parts 11j and 11k.
以後は、従来技術と同様の方法で、継鉄主部材10と前記
励磁コイル組立体の間に樹脂性絶縁体15を注入後、硬化
処理して本発明の励磁装置８が完成する。Thereafter, the resinous insulator 15 is injected between the yoke main member 10 and the exciting coil assembly by the same method as in the prior art, and then the hardening process is performed to complete the exciting device 8 of the present invention.
本発明によれば、ボビンの突出部11dを継鉄主部材の環
状溝10d内に嵌着させることにより、励磁コイル組立体
を継鉄主部材内の所定位置に正確に配設できるので、励
磁コイルが継鉄主部材内で浮き上がつたり、傾いた状態
で設定されることが無くなり、またグロメツトと継鉄主
部材のリード線取出穴とのシール性も良くなる。これに
より、励磁コイルが継鉄主部材の開口部端からはみ出す
ことが無くなり、また励磁コイルと継鉄主部材の外側フ
ランジの内周部との隙間に充填される樹脂性絶縁物も均
一な肉厚となるためクラツクの発生や絶縁不良を無くす
ことができる。またグロメツトをボビンの押部11j,11k
と継鉄主部材の底板部10cの間で挾持できるので、グロ
メツトのシール性能が向上し、リード線取出穴とグロメ
ツトの間からの樹脂性絶縁物の漏れも無くなるという効
果がある。According to the present invention, by fitting the protruding portion 11d of the bobbin into the annular groove 10d of the yoke main member, the exciting coil assembly can be accurately arranged at a predetermined position in the yoke main member. The coil does not float in the yoke main member and is not set in an inclined state, and the sealing property between the grommet and the lead wire extraction hole of the yoke main member is improved. This prevents the excitation coil from protruding from the end of the opening of the yoke main member, and the resin insulation filled in the gap between the excitation coil and the inner periphery of the outer main flange of the yoke main member has a uniform thickness. Since it is thick, cracking and insulation failure can be eliminated. Also, attach the grommets to the bobbin pressing parts 11j and 11k.
Since it can be clamped between the bottom plate portion 10c of the main yoke member and the yoke, the sealing performance of the grommet is improved, and the leakage of the resinous insulating material between the lead wire take-out hole and the grommet is eliminated.
本発明は、従来樹脂性絶縁物の軸方向抜け止めのために
継鉄主部材内に設けられていた環状溝10dを利用すると
共に、ボビンに突出部11dと押部11j,11kを一体的に追加
するのみで、価格を上げることなく上記のような大きな
効果が得られ極めて有効である。The present invention utilizes the annular groove 10d that is conventionally provided in the yoke main member to prevent the resinous insulator from coming off in the axial direction, and integrally forms the protruding portion 11d and the pushing portions 11j and 11k on the bobbin. Only by adding, the above-mentioned great effects can be obtained without raising the price, which is extremely effective.
第１図は本発明の一実施例を示す電磁クラツチの縦断面
図、第２図は第１図の主要部分である励磁装置の縦断面
拡大図、第３図は第１図で用いられるボビンの斜視外観
図である。 １……回転体、４……入力回転体、６……出力回転体、
８……励磁装置、９……励磁コイル、10……継鉄主部
材、10d……環状溝、11……ボビン、11d……突出部、11
j,11k……押部、15……樹脂性絶縁物。1 is a vertical sectional view of an electromagnetic clutch showing an embodiment of the present invention, FIG. 2 is an enlarged vertical sectional view of an exciter which is a main part of FIG. 1, and FIG. 3 is a bobbin used in FIG. FIG. 1 ... Rotating body, 4 ... Input rotating body, 6 ... Output rotating body,
8 ... Exciting device, 9 ... Exciting coil, 10 ... Yoke main member, 10d ... Annular groove, 11 ... Bobbin, 11d ... Projection part, 11
j, 11k …… Pressing part, 15 …… Resin insulation.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭57−196827（ＪＰ，Ｕ) 実開 昭62−36505（ＪＰ，Ｕ) 実公 昭58−33305（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliographic data Sho 57-196827 (JP, U) Actual development 62-36505 (JP, U) Actual public Sho 58-33305 (JP, Y2)
Claims (1)
鉄主部材と、磁束の発生源となる励磁コイルと、該励磁
コイルが巻装される断面略Ｕ字形環状のボビンと、該ボ
ビン及び前記励磁コイルを前記継鉄主部材に絶縁固定す
るための樹脂性絶縁物の４部材を有する電磁クラッチの
励磁装置において、前記ボビンのＵ字部側壁の外周部に
一体で放射状に配設した複数個の突出部を設け、一方前
記継鉄主部材に前記ボビンの突出部と対向する位置に環
状溝を設け、該環状溝の中に前記ボビン突出部を嵌着
し、前記樹脂性絶縁物で絶縁固定すると共に、前記ボビ
ンの励磁コイル口出側側壁の一部に押部を設け、該押部
と前記継鉄部主部材の間にリード線を引き出すためのグ
ロメットを挾持したことを特徴とする電磁クラッチの励
磁装置。1. A yoke main member forming at least a part of a main magnetic circuit, an exciting coil serving as a magnetic flux generating source, an annular bobbin having a substantially U-shaped cross section around which the exciting coil is wound, and the bobbin. And an exciting device for an electromagnetic clutch having four members of a resinous insulating material for insulatingly fixing the exciting coil to the yoke main member, wherein the bobbin is integrally and radially arranged on an outer peripheral portion of a side wall of a U-shaped portion. A plurality of protrusions are provided, on the other hand, an annular groove is provided in the yoke main member at a position facing the protrusion of the bobbin, and the bobbin protrusion is fitted in the annular groove, and the resinous insulator is formed. Insulating and fixing with, a push portion is provided on a part of the exciting coil outlet side wall of the bobbin, and a grommet for pulling out a lead wire is held between the push portion and the yoke main member. And an electromagnetic clutch excitation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033306A JPH0781595B2 (en) | 1987-02-18 | 1987-02-18 | Excitation device for electromagnetic clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033306A JPH0781595B2 (en) | 1987-02-18 | 1987-02-18 | Excitation device for electromagnetic clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63203929A JPS63203929A (en) | 1988-08-23 |
| JPH0781595B2 true JPH0781595B2 (en) | 1995-08-30 |
Family
ID=12382871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62033306A Expired - Lifetime JPH0781595B2 (en) | 1987-02-18 | 1987-02-18 | Excitation device for electromagnetic clutch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0781595B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018119571A (en) * | 2017-01-24 | 2018-08-02 | 小倉クラッチ株式会社 | Electromagnetic coupling device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100668719B1 (en) | 2005-07-04 | 2007-01-16 | 우리산업 주식회사 | A bobbin of field core for eletro-magnetic clutch, and the field core |
| CN107023590A (en) * | 2017-06-13 | 2017-08-08 | 苏州新智机电工业有限公司 | A kind of automobile air conditioner compressor clutch coil |
-
1987
- 1987-02-18 JP JP62033306A patent/JPH0781595B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018119571A (en) * | 2017-01-24 | 2018-08-02 | 小倉クラッチ株式会社 | Electromagnetic coupling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63203929A (en) | 1988-08-23 |
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