JPS6340972B2 - - Google Patents
Info
- Publication number
- JPS6340972B2 JPS6340972B2 JP59005215A JP521584A JPS6340972B2 JP S6340972 B2 JPS6340972 B2 JP S6340972B2 JP 59005215 A JP59005215 A JP 59005215A JP 521584 A JP521584 A JP 521584A JP S6340972 B2 JPS6340972 B2 JP S6340972B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- armature
- magnetic
- iron powder
- coil
- 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
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)
- Braking Arrangements (AREA)
- Electromagnets (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、電磁クラツチの改良に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This invention relates to improvements in electromagnetic clutches.
まず電磁クラツチの構造を第１図、第２図にも
とづいて説明する。図において、１は断面コ字状
で環状に構成された固定子、２はこの固定子１に
内蔵されたコイル、３は従動軸４に挿入されたべ
アリングで、上記固定子１を支承している。５は
ロータ、５ａはこのロータの円周上数か所に配設
された磁気遮断用スリツト、５ｂはリブで、内、
外のロータ５ｃ，５ｄを一体化している。６はロ
ータ５に接着されたライニング、７はこのライニ
ングの軸方向の対向し空隙ｇを介して設けられた
アマチユアである。８は板ばねであり、一端はリ
ベツト９によりアマチユア７へ、他端は駆動歯車
１０へねじ１１により固定されており、この板ば
ね８は全周数か所に設けられており、アマチユア
７を支承している。
First, the structure of the electromagnetic clutch will be explained based on FIGS. 1 and 2. In the figure, 1 is an annular stator with a U-shaped cross section, 2 is a coil built into this stator 1, and 3 is a bearing inserted into a driven shaft 4, which supports the stator 1. There is. 5 is a rotor, 5a is a magnetic shielding slit arranged at several places on the circumference of this rotor, 5b is a rib, among which:
The outer rotors 5c and 5d are integrated. 6 is a lining bonded to the rotor 5, and 7 is an armature that faces the lining in the axial direction and is provided through a gap g. Reference numeral 8 designates a leaf spring, one end of which is fixed to the armature 7 by a rivet 9, and the other end to the drive gear 10 by a screw 11. I support it.
以上の構造において次にその動作を説明する。
先ず駆動歯車１０は図示しない駆動源により従動
軸４を中心として回転している。コイル２が消勢
の状態では、図の点線で示す磁路に磁束Φは発生
しておらず、アマチユア７は板ばね８の弾性力に
よりロータ５から離間しており（空隙ｇを介して
対向している）、従つて動力の伝達はない。次に
コイル２が付勢されると、磁束Φが発生し、アマ
チユア７は板ばね８の弾性力に抗してロータ５に
吸引され、動力は駆動歯車１０、板ばね８、アマ
チユア７、ライニング６、ロータ５を介して従動
軸４へ伝達される。再びコイル２を消勢すると、
磁束Φは消滅し、アマチユア７は板ばね８の弾性
力によりロータ５から離間し、動力は遮断され
る。 Next, the operation of the above structure will be explained.
First, the drive gear 10 is rotated about the driven shaft 4 by a drive source (not shown). When the coil 2 is deenergized, no magnetic flux Φ is generated in the magnetic path indicated by the dotted line in the figure, and the armature 7 is separated from the rotor 5 due to the elastic force of the leaf spring 8 (opposed to it through the gap g). ), therefore there is no power transmission. Next, when the coil 2 is energized, a magnetic flux Φ is generated, and the armature 7 is attracted to the rotor 5 against the elastic force of the leaf spring 8, and the power is transmitted to the drive gear 10, the leaf spring 8, the armature 7, and the lining. 6. It is transmitted to the driven shaft 4 via the rotor 5. When coil 2 is deenergized again,
The magnetic flux Φ disappears, the armature 7 is separated from the rotor 5 by the elastic force of the leaf spring 8, and the power is cut off.
以上の構造及び動作を有するものにおいて、従
来ロータ５は第３図に示すような工程を経て製造
されていた。すなわち、まず第３図のａの如く、
丸棒を切断して円柱のブランク材１１を製作す
る。次にそのブランク材１１を燐酸皮膜処理等を
行なつて表面のすべりを良くした状態で冷間鍜造
等を行ない、ｂの形状に成形する。次にｃの如く
スリツト５ａをプレスにより打抜く。しかしこの
まゝの状態であれば、冷間鍜造により鉄の組織が
密となつており、磁気特性は良くないので、焼鈍
を行ない、次に焼鈍により発生した歪を矯正し正
規の寸法にする。そして最後に必要な所を機械加
工によつて仕上げる。以上のようにロータ５の製
造に当り、その工程は長く、又コスト高となつて
いた。 Conventionally, the rotor 5 having the above-described structure and operation was manufactured through a process as shown in FIG. That is, first, as shown in Figure 3 a,
A cylindrical blank material 11 is produced by cutting a round bar. Next, the blank material 11 is subjected to a phosphoric acid film treatment or the like to improve the surface slippage, and then cold forging or the like is performed to form it into the shape b. Next, a slit 5a is punched out using a press as shown in c. However, if it remains in this state, the structure of the iron will be dense due to cold forging, and the magnetic properties will not be good, so annealing is performed, and then the distortion caused by annealing is corrected to bring it back to the normal dimensions. do. Finally, the necessary parts are finished by machining. As described above, the manufacturing process of the rotor 5 is long and the cost is high.
この発明は以上のような欠点に鑑みてなされた
もので、ロータ、アマチユア、固定子の少なくと
もそのいずれかを磁性鉄粉を混入したプラスチツ
ク等の成形材で製作することにより、安価に製作
できるとともに回転部の慣性GD2を小さくし応答
性の良い電磁クラツチを提供するものである。
This invention was made in view of the above-mentioned drawbacks, and by manufacturing at least one of the rotor, armature, and stator from a molded material such as plastic mixed with magnetic iron powder, it can be manufactured at low cost and This provides an electromagnetic clutch with good responsiveness by reducing the inertia GD 2 of the rotating part.
以下この発明の一実施例を図面により説明す
る。全体の組立構成そのものは上記従来のものと
同様であるが、ロータ５を磁性鉄粉を混入した合
成樹脂材により製作したものである。このように
磁性鉄粉を混入した合成樹脂成形品であれば、ス
リツト５ａは勿論の事、他の寸法も型通りに加工
する事が可能となり、その工程は大巾に短縮され
る。更に成形材料であるため、自己のもつGD2
（フライホイール効果）は非常に小さく、回転立
上りははやくなり、更には磁性鉄粉であるため、
電流によつて発生する磁束が電流遮断時はやく消
滅し、つれまわりなどの消費をなくすことができ
る。なお磁性鉄粉を磁気回路としているため、磁
束の消費は大きくなるが、あらかじめコイル２は
その起磁力を見込んで設計しておけば問題はな
い。
An embodiment of the present invention will be described below with reference to the drawings. The overall assembly structure itself is the same as the conventional one, but the rotor 5 is made of a synthetic resin material mixed with magnetic iron powder. With a synthetic resin molded product mixed with magnetic iron powder in this manner, not only the slit 5a but also other dimensions can be processed according to the mold, and the process can be greatly shortened. Furthermore, since it is a molding material, its own GD 2
(Flywheel effect) is very small, rotation starts quickly, and since it is magnetic iron powder,
The magnetic flux generated by the current disappears quickly when the current is interrupted, eliminating consumption such as tangling. Note that since magnetic iron powder is used as the magnetic circuit, the consumption of magnetic flux is large, but there is no problem if the coil 2 is designed with the magnetomotive force taken into consideration in advance.
さらに、従来の電磁クラツチにおいては、ロー
タおよびアマチユアを軟鋼によつて製作している
ため、ライニングとともにこのロータおよびアマ
チユアが互いに摺接すると、この材料が軟鋼で軟
かいため、その摺接面が「ささくれ」状態とな
り、伝達トルクが変動し易くなるばかりでなく、
上記摺接面に空隙が発生してスリツプ現象が生じ
所定のトルクが伝達できなくなるが、この発明に
よれば、磁性鉄粉を混入した合成樹脂によつてロ
ータおよびアマチユアを製作するようにしたの
で、上記「ささくれ」状態になるようなことがな
く、常に安定したトルク伝達性能が得られる。 Furthermore, in conventional electromagnetic clutches, the rotor and armature are made of mild steel, so when the rotor and armature slide against each other along with the lining, since this material is soft steel, the sliding surface will be This will not only cause the transmission torque to fluctuate easily, but also
A gap occurs in the sliding surface, causing a slip phenomenon and making it impossible to transmit the specified torque.According to the present invention, however, the rotor and armature are made of synthetic resin mixed with magnetic iron powder. , the above-mentioned "hangnail" condition does not occur, and stable torque transmission performance can always be obtained.
なお上述ではロータについて説明したが、アマ
チユア７に適用してもその効果は同様であり、ま
た固定子１に適用しても、軽くなつたり、磁束の
消滅をはやめるなどの効果を奏する。 Although the rotor has been described above, the effect is the same even when applied to the armature 7, and even when applied to the stator 1, it has effects such as being lighter and preventing magnetic flux from disappearing.
以上のようにこの発明によれば、磁気回路の少
なくとも１つ以上に磁性鉄粉を内蔵した成形材料
を使用するようにしたため、製作は極めて簡単と
なり、大巾にコストを低減でき、また回転部の
GD2も小さくなり、応答性は向上するなどの効果
がある。
As described above, according to the present invention, since a molding material containing magnetic iron powder is used in at least one of the magnetic circuits, manufacturing is extremely simple and costs can be greatly reduced. of
This has the effect of reducing GD 2 and improving responsiveness.
第１図は電磁クラツチの構成を示す部分断面
図、第２図は第１図のロータの平面図、第３図
ａ，ｂ，ｃは従来装置のロータの製造工程を示す
説明図である。
図中、１は固定子、２はコイル、５はロータ、
５ａはスリツト、５ｂはリブ、６はライニング、
７はアマチユアである。尚、図中同一符号は同一
又は相当部分を示す。
FIG. 1 is a partial sectional view showing the structure of an electromagnetic clutch, FIG. 2 is a plan view of the rotor shown in FIG. 1, and FIGS. 3a, b, and c are explanatory diagrams showing the manufacturing process of the rotor of a conventional device. In the figure, 1 is a stator, 2 is a coil, 5 is a rotor,
5a is a slit, 5b is a rib, 6 is a lining,
7 is amateur. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
向に移動可能に設けられたアマチユア、上記ロー
タとアマチユアを圧接させるためのコイルを内蔵
する固定子を備えたものにおいて、上記ロータ、
アマチユアの少なくともいずれかを磁性鉄粉を混
入した合成樹脂により製作したことを特徴とする
電磁クラツチ。1. A rotor, an armature facing the rotor in an axial direction and movable in the axial direction, and a stator incorporating a coil for bringing the rotor and the armature into pressure contact with each other, the rotor,
An electromagnetic clutch characterized in that at least one of the armatures is made of synthetic resin mixed with magnetic iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59005215A JPS60151423A (en) | 1984-01-12 | 1984-01-12 | Electromagnetic clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59005215A JPS60151423A (en) | 1984-01-12 | 1984-01-12 | Electromagnetic clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60151423A JPS60151423A (en) | 1985-08-09 |
| JPS6340972B2 true JPS6340972B2 (en) | 1988-08-15 |
Family
ID=11604961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59005215A Granted JPS60151423A (en) | 1984-01-12 | 1984-01-12 | Electromagnetic clutch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60151423A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01166138U (en) * | 1988-04-26 | 1989-11-21 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58102A (en) * | 1981-06-25 | 1983-01-05 | Moriyama Sangyo Kk | Movable core for solenoid |
| JPS5812546A (en) * | 1981-07-15 | 1983-01-24 | Brother Ind Ltd | Magnetic path forming member and manufacture thereof |
-
1984
- 1984-01-12 JP JP59005215A patent/JPS60151423A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60151423A (en) | 1985-08-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |