JP2538912Y2 - Magnetic coupling - Google Patents
Magnetic couplingInfo
- Publication number
- JP2538912Y2 JP2538912Y2 JP1991075999U JP7599991U JP2538912Y2 JP 2538912 Y2 JP2538912 Y2 JP 2538912Y2 JP 1991075999 U JP1991075999 U JP 1991075999U JP 7599991 U JP7599991 U JP 7599991U JP 2538912 Y2 JP2538912 Y2 JP 2538912Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical magnet
- magnet
- cylindrical
- peripheral surface
- drive shaft
- 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
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Description
【０００１】[0001]
【産業上の利用分野】本考案は、磁気カツプリングに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic coupling.
【０００２】[0002]
【従来の技術】従来の磁気カツプリングを図３により説
明すると、１、２が磁石支持体、３が円周方向に磁化し
た一方の円筒形磁石、３’が円筒形磁石３よりも小径で
円周方向に磁化した他方の円筒形磁石、５が上記磁石支
持体１を介して上記一方の円筒形磁石３を取付けた駆動
軸、５’が上記磁石支持体２を介して上記他方の円筒形
磁石３’を取付けた被駆動軸、６、６’が軸受で、他方
の円筒形磁石３’を一方の円筒形磁石３に挿入してい
る。2. Description of the Related Art A conventional magnetic coupling will be described with reference to FIG. 3. Reference numerals 1 and 2 denote a magnet support, 3 is a cylindrical magnet magnetized in the circumferential direction, and 3 'is a circle having a smaller diameter than the cylindrical magnet 3. The other cylindrical magnet 5 magnetized in the circumferential direction has a drive shaft 5 on which the one cylindrical magnet 3 is mounted via the magnet support 1, and the other cylindrical magnet 5 ′ has the other cylindrical magnet via the magnet support 2. The driven shafts 6 and 6 ′ to which the magnets 3 ′ are attached are bearings, and the other cylindrical magnet 3 ′ is inserted into one cylindrical magnet 3.
【０００３】上記図３に示す従来の磁気カツプリングで
は、駆動側の一方の円筒形磁石３の極と被駆動側の他方
の円筒状磁石３’の極とをＮ−Ｓ或いはＳ−Ｎの状態に
向かい合わせた場合、半径方向の間隔の関係をＸ1 、Ｘ
2 、Ｘ3 、Ｘ4 、Ｙ1 、Ｙ2、Ｙ3 、Ｙ4 とすれば、２
つの円筒形磁石３、３’は、半径方向に引き寄せ合い、
しかも引き寄せ合う力がバランスしている。In the conventional magnetic coupling shown in FIG. 3, the pole of one cylindrical magnet 3 on the driving side and the pole of the other cylindrical magnet 3 'on the driven side are set in the NS or SN state. , X 1 , X 2
2 , X 3 , X 4 , Y 1 , Y 2 , Y 3 , Y 4
The two cylindrical magnets 3, 3 'attract radially,
Moreover, the attraction is balanced.
【０００４】この状態で、駆動軸５及び被駆動軸５’を
軸受６、６’により支持して、円筒形磁石３、３’の半
径方向の間隔を一定に保持した後、駆動軸５及び一方の
円筒形磁石３を回転させると、他方の円筒形磁石３’が
一方の円筒形磁石３に引き寄せられて、被駆動軸５’も
回転する。そして回転の各瞬間の半径方向の間隔の相対
関係は、回転していない場合の相対関係と同様であり、
引き寄せ合う力がバランスしている。In this state, the drive shaft 5 and the driven shaft 5 'are supported by bearings 6 and 6' to keep the radial distance between the cylindrical magnets 3 and 3 'constant. When one cylindrical magnet 3 is rotated, the other cylindrical magnet 3 ′ is attracted to the one cylindrical magnet 3, and the driven shaft 5 ′ also rotates. And the relative relationship of the radial spacing at each moment of rotation is the same as the relative relationship when not rotating,
The attraction is balanced.
【０００５】[0005]
【考案が解決しようとする課題】前記図３に示す従来の
磁気カツプリングには、次の問題があった。即ち、磁気
カツプリングは、一方の円筒形磁石３と他方の円筒形磁
石３’との間に介在する磁束のせん断抵抗により動力を
伝達するものである。この動力伝達能力を向上させるた
めには、一方の円筒形磁石３と他方の円筒形磁石３’と
の間の磁束密度を高くする必要がある。The conventional magnetic coupling shown in FIG. 3 has the following problems. That is, the magnetic coupling transmits power by shear resistance of magnetic flux interposed between one cylindrical magnet 3 and the other cylindrical magnet 3 '. In order to improve the power transmission capacity, it is necessary to increase the magnetic flux density between one cylindrical magnet 3 and the other cylindrical magnet 3 '.
【０００６】磁束密度を高める場合、強力な磁石を用い
る方法と、対向する磁石の間隔を狭くする方法とがある
が、現存する素材、現在の技術で磁束密度を高める場合
には、磁石間の間隔を狭くするのが最も有効である。し
かし図３に示す従来の磁気カツプリングでは、一方の円
筒形磁石３の内周面と他方の円筒形磁石３’の外周面と
を平坦に形成している。しかも一方の円筒形磁石３を支
持する駆動軸５側の磁石支持体１と他方の円筒形磁石
３’を支持する被駆動軸５’側の磁石支持体２との対向
軸心部を連結していないので、駆動軸５、被駆動軸
５’、軸受６、６’等を充分に剛に製作しないと、一方
の円筒形磁石３と他方の円筒形磁石３’との間隔を狭い
間隔に保持できない。In order to increase the magnetic flux density, there are a method of using a strong magnet and a method of narrowing the distance between opposing magnets. It is most effective to reduce the interval. However, in the conventional magnetic coupling shown in FIG. 3, the inner peripheral surface of one cylindrical magnet 3 and the outer peripheral surface of the other cylindrical magnet 3 'are formed flat. Moreover, the opposing shaft center portions of the magnet support 1 on the drive shaft 5 supporting the one cylindrical magnet 3 and the magnet support 2 on the driven shaft 5 'supporting the other cylindrical magnet 3' are connected. If the drive shaft 5, driven shaft 5 ', bearings 6, 6', etc. are not made sufficiently rigid, the interval between one cylindrical magnet 3 and the other cylindrical magnet 3 'is reduced. I can't keep it.
【０００７】また上記のように構成しているので、角度
ミスアライメントがある場合、一方の円筒形磁石３と他
方の円筒形磁石３’との間に広い部分と狭い部分とを生
じ、磁束密度を一定に保持できなくて、高い動力伝達能
力を維持できないという問題があった。本考案は前記の
問題点に鑑み提案するものであり、その目的とする処
は、高い動力伝達能力を得ることができる上に、高い動
力伝達能力を維持できる磁気カツプリングを提供しよう
とする点にある。[0007] Also, because of the above configuration, when there is an angular misalignment, a wide portion and a narrow portion are generated between one cylindrical magnet 3 and the other cylindrical magnet 3 ', and the magnetic flux density is reduced. Therefore, there has been a problem that it is not possible to maintain a high power transmission capability because the power cannot be kept constant. The present invention has been made in view of the above-described problems, and has as its object to provide a magnetic coupling capable of maintaining a high power transmission capability in addition to obtaining a high power transmission capability. is there.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
めに、本考案は、円周方向に磁化した一方の円筒形磁石
を駆動軸の端部に取付け、この円筒形磁石よりも小径で
円周方向に磁化した他方の円筒形磁石を上記駆動軸の端
部に対向した被駆動軸の端部に取付け、この円筒形磁石
を上記一方の円筒形磁石内に挿入して、一方の円筒形磁
石の内周面と他方の円筒形磁石の外周面とを対向させた
磁気カツプリングにおいて、前記駆動軸及び前記被駆動
軸の対向軸心部をボールジヨイントにより連結し、前記
一方の円筒形磁石の内周面に凹円弧状クラウニングを設
け、前記他方の円筒形磁石の外周面に上記凹円弧状クラ
ウニングに対向する凸円弧状クラウニングを設けてい
る。In order to achieve the above object, the present invention attaches one cylindrical magnet magnetized in the circumferential direction to the end of a drive shaft, and has a smaller diameter than the cylindrical magnet. The other cylindrical magnet magnetized in the circumferential direction is attached to the end of the driven shaft opposed to the end of the drive shaft, and this cylindrical magnet is inserted into the one cylindrical magnet to form one cylinder. In the magnetic coupling in which the inner peripheral surface of the shaped magnet and the outer peripheral surface of the other cylindrical magnet are opposed to each other, the opposing axes of the drive shaft and the driven shaft are connected by a ball joint, and A concave arc-shaped crowning is provided on the inner peripheral surface of the magnet, and a convex arc-shaped crowning facing the concave arc-shaped crowning is provided on the outer peripheral surface of the other cylindrical magnet.
【０００９】[0009]
【作用】（１）駆動軸と被駆動軸との対向軸心部をボー
ルジヨイントにより連結しており、一方の円筒形磁石と
他方の円筒形磁石との位置を正確に決め、これら２つの
円筒形磁石の間隔を狭くして、磁束密度を高めるように
しているので、高い動力伝達能力を得ることができる。
（２）一方の円筒形磁石の内周面に凹円弧状クラウニン
グを設け、他方の円筒形磁石の外周面に上記凹円弧状ク
ラウニングに対向する凸円弧状クラウニングを設けてい
る。しかも上記のように駆動軸と被駆動軸との対向軸心
部をボールジヨイントにより連結しており、角度ミスア
ライメントが生じた場合、一方の円筒形磁石と他方の円
筒形磁石との間に広い部分と狭い部分とを生じさせず、
これら２つの円筒形磁石の間隔を狭い一定の間隔に保持
できるので、高い動力伝達能力を維持できる。(1) The opposing shaft centers of the drive shaft and the driven shaft are connected by a ball joint, and the positions of one cylindrical magnet and the other cylindrical magnet are accurately determined. Since the distance between the cylindrical magnets is narrowed to increase the magnetic flux density, high power transmission capability can be obtained.
(2) A concave arc-shaped crowning is provided on the inner peripheral surface of one cylindrical magnet, and a convex arc-shaped crowning facing the concave arc-shaped crowning is provided on the outer peripheral surface of the other cylindrical magnet. In addition, as described above, the opposing axes of the drive shaft and the driven shaft are connected by a ball joint, and when angular misalignment occurs, one cylindrical magnet and the other cylindrical magnet are connected. Without creating wide and narrow parts,
Since the interval between these two cylindrical magnets can be kept narrow and constant, high power transmission capability can be maintained.
【００１０】[0010]
【実施例】次に本考案の磁気カツプリングを図１、２に
示す一実施例により説明すると、図１の５が駆動軸、
５’が被駆動軸、６が駆動軸５を回転可能に支持する軸
受、６’が被駆動軸５’を回転可能に支持する軸受、１
１が駆動軸５に固定した大径のスリーブ、１２が被駆動
軸５’に固定した小径のハブ、１３が円周方向に磁化し
た径の大きい一方の円筒形磁石、１３’が円周方向に磁
化した径の小さい他方の円筒形磁石で、一方の円筒形磁
石１３を大径のスリーブ１１の内周面に固定し、他方の
円筒形磁石１３’を小径のハブ１３’の内周面に固定し
て、他方の円筒形磁石１３’を一方の円筒形磁石１３内
に挿入している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the magnetic coupling of the present invention will be described with reference to an embodiment shown in FIGS.
5 ′ is a driven shaft, 6 is a bearing that rotatably supports the drive shaft 5, 6 ′ is a bearing that rotatably supports the driven shaft 5 ′, 1
1 is a large-diameter sleeve fixed to the drive shaft 5, 12 is a small-diameter hub fixed to the driven shaft 5 ', 13 is one large-diameter cylindrical magnet magnetized in the circumferential direction, and 13' is a circumferential magnet. One cylindrical magnet 13 is fixed to the inner peripheral surface of the large-diameter sleeve 11 and the other cylindrical magnet 13 'is the inner peripheral surface of the small-diameter hub 13'. And the other cylindrical magnet 13 ′ is inserted into one cylindrical magnet 13.
【００１１】１４がボールジヨイントで、同ボールジヨ
イント１４により、スリーブ１１の軸心部とハブ１２の
軸心部とを連結して、一方の円筒形磁石１３と他方の円
筒形磁石１３’との間に充分な磁束密度を得られる狭い
間隔を形成している。上記一方の円筒形磁石１３の内周
面には、凹円弧状クラウニングを設け、上記他方の円筒
形磁石１３’の外周面には、上記凹円弧状クラウニング
に対向する凸円弧状クラウニングを設けている。Reference numeral 14 denotes a ball joint. The ball joint 14 connects the axis of the sleeve 11 and the axis of the hub 12 to form one cylindrical magnet 13 and the other cylindrical magnet 13 '. And a narrow space between them to obtain a sufficient magnetic flux density. An inner peripheral surface of the one cylindrical magnet 13 is provided with a concave arc-shaped crowning, and an outer peripheral surface of the other cylindrical magnet 13 'is provided with a convex arc-shaped crowning facing the concave arc-shaped crowning. I have.
【００１２】図２は、図１の矢視Ａ−Ａ線に沿う縦断正
面図である。この図から明らかなように駆動軸５のスリ
ーブ１１に取付けた円筒形磁石１３の極と、被駆動軸
５’のハブ１２に取付けた円筒状磁石１３’の極とがＮ
−Ｓ或いはＳ−Ｎの状態で向かい合っている。磁気カツ
プリングは、対向する磁石間に介在する磁束のせん断抵
抗により動力を伝達するものであり、磁束密度を高めれ
ば、動力伝達能力を高めることができる。FIG. 2 is a vertical sectional front view taken along the line AA of FIG. As is apparent from this figure, the pole of the cylindrical magnet 13 attached to the sleeve 11 of the drive shaft 5 and the pole of the cylindrical magnet 13 'attached to the hub 12 of the driven shaft 5' are N
They face each other in the state of -S or SN. The magnetic coupling transmits power by the shear resistance of the magnetic flux interposed between the opposed magnets. If the magnetic flux density is increased, the power transmission capability can be increased.
【００１３】また磁束密度は、対向する磁石の距離の２
乗に反比例するので、磁束密度を高めて、高い動力伝達
能力を得るためには、２つの円筒形磁石の間隔をできる
だけ狭くする必要がある。また２つの円筒形磁石の間隔
を可能な限り狭く保持するためには、これら円筒形磁石
の位置を正確に決める必要がある。本考案では、駆動軸
５（スリーブ１１）と被駆動軸５’（ハブ１２）との対
向軸心部をボールジヨイント１４により連結している。
このことにより、一方の円筒形磁石１３と他方の円筒形
磁石１３’との位置を正確に決めて、これら２つの円筒
形磁石１３、１３’の間隔を狭くし、磁束密度を高め
て、高い動力伝達能力を得るようにしている。The magnetic flux density is 2 times the distance between the facing magnets.
Since it is inversely proportional to the power, in order to increase the magnetic flux density and obtain a high power transmission capability, it is necessary to make the interval between the two cylindrical magnets as small as possible. In order to keep the distance between the two cylindrical magnets as small as possible, it is necessary to accurately determine the positions of these cylindrical magnets. In the present invention, the opposing axes of the drive shaft 5 (sleeve 11) and the driven shaft 5 ′ (hub 12) are connected by a ball joint 14.
Thereby, the position of one cylindrical magnet 13 and the other cylindrical magnet 13 ′ is accurately determined, the interval between these two cylindrical magnets 13, 13 ′ is narrowed, the magnetic flux density is increased, and Power transmission capacity is obtained.
【００１４】また一方の円筒形磁石１３の内周面に凹円
弧状クラウニングを設け、他方の円筒形磁石１３’の外
周面に上記凹円弧状クラウニングに対向する凸円弧状ク
ラウニングを設けている。しかも上記のように駆動軸５
と被駆動軸５’との対向軸心部をボールジヨイント１４
により連結している。これらのことにより、角度ミスア
ライメントが生じた場合、一方の円筒形磁石１３と他方
の円筒形磁石１３’との間に広い部分と狭い部分とを生
じさせず、これら２つの円筒形磁石１３、１３’の間隔
を狭い一定の間隔に保持して、動力伝達能力を高い状態
に維持するようにしている。A concave arc-shaped crowning is provided on the inner peripheral surface of one cylindrical magnet 13, and a convex arc-shaped crowning facing the concave arc-shaped crowning is provided on the outer peripheral surface of the other cylindrical magnet 13 ′. Moreover, as described above, the drive shaft 5
The center of the opposing shaft between the shaft and the driven shaft 5 ′ is connected to the ball joint 14.
Are linked by As a result, when angular misalignment occurs, a wide portion and a narrow portion do not occur between one cylindrical magnet 13 and the other cylindrical magnet 13 ′, and these two cylindrical magnets 13, The interval of 13 'is kept narrow and constant to maintain a high power transmission capacity.
【００１５】[0015]
【考案の効果】本考案の磁気カツプリングは前記のよう
に円周方向に磁化した一方の円筒形磁石を駆動軸の端部
に取付け、この円筒形磁石よりも小径で円周方向に磁化
した他方の円筒形磁石を上記駆動軸の端部に対向した被
駆動軸の端部に取付け、この円筒形磁石を上記一方の円
筒形磁石内に挿入して、一方の円筒形磁石の内周面と他
方の円筒形磁石の外周面とを対向させた磁気カツプリン
グにおいて、駆動軸と被駆動軸との対向軸心部をボール
ジヨイントにより連結しており、一方の円筒形磁石と他
方の円筒形磁石との位置を正確に決め、これら２つの円
筒形磁石の間隔を狭くして、磁束密度を高めるようにし
ているので、高い動力伝達能力を得ることができる。According to the magnetic coupling of the present invention, one cylindrical magnet magnetized in the circumferential direction is attached to the end of the drive shaft as described above, and the other magnetized in the circumferential direction with a smaller diameter than the cylindrical magnet. The cylindrical magnet is attached to the end of the driven shaft facing the end of the drive shaft, and this cylindrical magnet is inserted into the one cylindrical magnet, and the inner peripheral surface of one cylindrical magnet is In a magnetic coupling in which the outer peripheral surface of the other cylindrical magnet is opposed to the other, a center axis of the drive shaft and the driven shaft is connected by a ball joint, and one cylindrical magnet and the other cylindrical magnet are connected. Is precisely determined and the distance between these two cylindrical magnets is narrowed to increase the magnetic flux density, so that a high power transmission capability can be obtained.
【００１６】また一方の円筒形磁石の内周面に凹円弧状
クラウニングを設け、他方の円筒形磁石の外周面に上記
凹円弧状クラウニングに対向する凸円弧状クラウニング
を設けている。しかも上記のように駆動軸と被駆動軸と
の対向軸心部をボールジヨイントにより連結しており、
角度ミスアライメントが生じた場合、一方の円筒形磁石
と他方の円筒形磁石との間に広い部分と狭い部分とを生
じさせず、これら２つの円筒形磁石の間隔を狭い一定の
間隔に保持できるので、高い動力伝達能力を維持でき
る。A concave arc-shaped crowning is provided on the inner peripheral surface of one cylindrical magnet, and a convex arc-shaped crowning facing the concave arc-shaped crowning is provided on the outer peripheral surface of the other cylindrical magnet. Moreover, as described above, the opposing shaft centers of the drive shaft and the driven shaft are connected by a ball joint,
When angular misalignment occurs, a wide portion and a narrow portion do not occur between one cylindrical magnet and the other cylindrical magnet, and the interval between these two cylindrical magnets can be kept at a narrow constant interval. Therefore, high power transmission capability can be maintained.
【図１】本考案に係わる磁気カツプリングの一実施例を
示す縦断側面図である。FIG. 1 is a longitudinal sectional side view showing one embodiment of a magnetic coupling according to the present invention.
【図２】図１の矢視Ａ−Ａ線に沿う縦断正面図である。FIG. 2 is a vertical sectional front view taken along the line AA of FIG. 1;
【図３】従来の磁気カツプリングを示す縦断側面図であ
る。FIG. 3 is a longitudinal side view showing a conventional magnetic coupling.
５ 駆動軸 ５’ 被駆動軸 ６、６’軸受 １１ 駆動軸５側の大径のスリーブ １２ 被駆動軸５’側の小径のハブ １３ 駆動側円筒形磁石 １３’ 被駆動側円筒形磁石 １４ ボールジヨイント Reference Signs List 5 drive shaft 5 'driven shaft 6, 6' bearing 11 large-diameter sleeve on drive shaft 5 side 12 small-diameter hub on driven shaft 5 'side 13 drive-side cylindrical magnet 13' driven-side cylindrical magnet 14 ball Joint
Claims (1)
駆動軸の端部に取付け、この円筒形磁石よりも小径で円
周方向に磁化した他方の円筒形磁石を上記駆動軸の端部
に対向した被駆動軸の端部に取付け、この円筒形磁石を
上記一方の円筒形磁石内に挿入して、一方の円筒形磁石
の内周面と他方の円筒形磁石の外周面とを対向させた磁
気カツプリングにおいて、前記駆動軸及び前記被駆動軸
の対向軸心部をボールジヨイントにより連結し、前記一
方の円筒形磁石の内周面に凹円弧状クラウニングを設
け、前記他方の円筒形磁石の外周面に上記凹円弧状クラ
ウニングに対向する凸円弧状クラウニングを設けたこと
を特徴とする磁気カツプリング。1. A cylindrical magnet magnetized in the circumferential direction is attached to the end of the drive shaft, and the other cylindrical magnet smaller in diameter than the cylindrical magnet and magnetized in the circumferential direction is connected to the end of the drive shaft. The cylindrical magnet is inserted into the one cylindrical magnet, and the inner peripheral surface of one cylindrical magnet and the outer peripheral surface of the other cylindrical magnet are inserted into the one cylindrical magnet. In the magnetic coupling opposed to each other, the opposite shaft centers of the drive shaft and the driven shaft are connected by a ball joint, a concave arc-shaped crowning is provided on an inner peripheral surface of the one cylindrical magnet, and the other cylinder is provided. A magnetic coupling characterized in that a convex arc-shaped crowning facing the concave arc-shaped crowning is provided on an outer peripheral surface of a shaped magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075999U JP2538912Y2 (en) | 1991-09-20 | 1991-09-20 | Magnetic coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075999U JP2538912Y2 (en) | 1991-09-20 | 1991-09-20 | Magnetic coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0527331U JPH0527331U (en) | 1993-04-09 |
| JP2538912Y2 true JP2538912Y2 (en) | 1997-06-18 |
Family
ID=13592504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991075999U Expired - Lifetime JP2538912Y2 (en) | 1991-09-20 | 1991-09-20 | Magnetic coupling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538912Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09257116A (en) * | 1996-03-25 | 1997-09-30 | Ckd Corp | Drive transmission means |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5031251A (en) * | 1973-07-18 | 1975-03-27 | ||
| JPS5733467A (en) * | 1980-08-07 | 1982-02-23 | Nec Corp | Magnetic disk device |
| JPH01164813A (en) * | 1987-12-21 | 1989-06-28 | Nec Home Electron Ltd | Ball joint |
-
1991
- 1991-09-20 JP JP1991075999U patent/JP2538912Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0527331U (en) | 1993-04-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970128 |