JP2012057790A - Surface facing type magnetic coupling device - Google Patents

Surface facing type magnetic coupling device Download PDF

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JP2012057790A
JP2012057790A JP2010219891A JP2010219891A JP2012057790A JP 2012057790 A JP2012057790 A JP 2012057790A JP 2010219891 A JP2010219891 A JP 2010219891A JP 2010219891 A JP2010219891 A JP 2010219891A JP 2012057790 A JP2012057790 A JP 2012057790A
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permanent magnet
side permanent
driven
shaft
drive
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Katsuya Tamaki
勝也 玉木
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B PRO CORP
B'PRO CORP
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Abstract

PROBLEM TO BE SOLVED: To provide a magnetic coupling device capable of reducing a suction force in an axial direction without reducing a torque transmission power.SOLUTION: The driving shaft 1 and driven shaft 2 of this magnetic coupling device are arranged so as to have the same axis, and they are supported by bearings 9 and 10 respectively. To the axis edge of the opposite side of the driving shaft 1 and that of the driven shaft 2, a disc-shaped driving side permanent magnet 3 and a disc-shaped driven side permanent magnet 4 are fixed respectively. On the counterface surface of the driving side permanent magnet 3 and the driven side permanent magnet 4, magnetic pole patterns 5 and 6 with a plurality of pairs of magnetic poles magnetized are formed in a circumferential direction respectively. The driving shaft 1 and the driven shaft 2 are configured to be combined in a non-contact manner by the suction force of magnetic poles 5a and 6a so as to make torque transmission. In addition, in the inner circumference or the outer circumference of each of the magnetic pole patterns 5 and 6 formed on the driving side permanent magnet 3 and the driven side permanent magnet 4 respectively, ring-shaped unipolar patterns 7 and 8 magnetized in the monopole are formed. These unipolar patterns 7 and 8 are made to be surface-facing each other.

Description

本発明は、駆動軸と従動軸を磁気的に結合してトルクを伝達する面対向型磁気カップリング装置に関する。  The present invention relates to a surface-facing magnetic coupling device that magnetically couples a drive shaft and a driven shaft to transmit torque.

従来、駆動軸と従動軸を磁気的に結合してトルクを伝達する磁気カップリング装置は、軸端を突き合わせて配置した駆動軸と従動軸の両方の軸端にそれぞれ円板状の永久磁石を固定し、両方の永久磁石を互いに面対向させ、両方の永久磁石の吸引力により駆動軸と従動軸を磁気的に結合している。例えば、実開昭58−108777号公報(特許文献1)、或いは、特許第3463700号公報(特許文献2)には、駆動軸に固定した円板状の永久磁石の円周方向に交互にかつ等間隔に異極になるように複数の磁極を形成させたものが開示されている。  Conventionally, a magnetic coupling device that transmits torque by magnetically coupling a drive shaft and a driven shaft has a disk-shaped permanent magnet at each of the shaft ends of the drive shaft and the driven shaft that are arranged with the shaft ends abutted against each other. The two permanent magnets are fixed to face each other, and the drive shaft and the driven shaft are magnetically coupled by the attractive force of both permanent magnets. For example, in Japanese Utility Model Laid-Open No. 58-108777 (Patent Document 1) or Japanese Patent No. 3463700 (Patent Document 2), a disk-shaped permanent magnet fixed to a drive shaft is alternately arranged in the circumferential direction and A device in which a plurality of magnetic poles are formed so as to have different polarities at equal intervals is disclosed.

実開昭58−108777号公報Japanese Utility Model Publication No. 58-108777 特許第3463700号公報Japanese Patent No. 3463700

この種の磁気カップリング装置は、図6及び図7に示すように、同一の軸心となるように配置された駆動軸100及び従動軸101は、各々軸受110、111に支持されている。そして、駆動軸100及び従動軸101の対向側の軸端には、それぞれ円板状の駆動側永久磁石103及び従動側永久磁石104が固定されている。この駆動側永久磁石103及び従動側永久磁石104の対向面には、各々円周方向に複数対の磁極105a、106aが着磁された磁極パターン105、106が形成され、磁極105a、106aの吸引力により駆動軸100及び従動軸101を非接触で結合してトルク伝達するように構成されている。  In this type of magnetic coupling device, as shown in FIGS. 6 and 7, the drive shaft 100 and the driven shaft 101 arranged to have the same axis are supported by bearings 110 and 111, respectively. A disk-like drive-side permanent magnet 103 and a driven-side permanent magnet 104 are fixed to shaft ends on the opposite sides of the drive shaft 100 and the driven shaft 101, respectively. On the opposing surfaces of the drive-side permanent magnet 103 and the driven-side permanent magnet 104, magnetic pole patterns 105, 106 each having a plurality of pairs of magnetic poles 105a, 106a magnetized in the circumferential direction are formed, and the magnetic poles 105a, 106a are attracted. The drive shaft 100 and the driven shaft 101 are coupled in a non-contact manner by force so as to transmit torque.

近年の磁気カップリング装置は、トルクの伝達力を高めるために、永久磁石として、例えば、ネオジム磁石(Neodymium magnet)が用いられるようになっている。ところが、このネオジム磁石を使用した場合、吸引力が強いために、駆動側永久磁石103及び従動側永久磁石104は、互いに接近しようとするので、駆動軸100及び従動軸101は、図7に示す矢示の方向に移動する。このとき、駆動軸100及び従動軸101を支持する各々の軸受110、111には、常に軸方向の大きな負荷がかかることになる。このように、大きな負荷を与えられた軸受110、111は、大きなストレスによって、やがて破損する問題が生じていた。この対策として、高耐圧の軸受を採用することもあるが、この種の軸受は高額であり、また大型のため、実用的に採用できない問題もあった。  In recent years, for example, a neodymium magnet has been used as a permanent magnet in order to increase torque transmission force in a magnetic coupling device in recent years. However, when this neodymium magnet is used, since the attractive force is strong, the drive-side permanent magnet 103 and the driven-side permanent magnet 104 try to approach each other, so the drive shaft 100 and the driven shaft 101 are shown in FIG. Move in the direction of the arrow. At this time, a large axial load is always applied to the bearings 110 and 111 that support the drive shaft 100 and the driven shaft 101. As described above, the bearings 110 and 111 to which a large load is applied have a problem that they are eventually damaged by a large stress. As a countermeasure, a high pressure bearing may be used, but this type of bearing is expensive and has a problem that it cannot be used practically because of its large size.

そこで、本発明の目的は、この問題を解決し、トルクの伝達力を低下させることなく、軸方向の吸引力を低減させることができる磁気カップリング装置を提供することにある。  Therefore, an object of the present invention is to solve this problem and provide a magnetic coupling device that can reduce the attractive force in the axial direction without reducing the torque transmission force.

上記課題を解決するため、本発明による磁気カップリング装置は、同一の軸心となるように配置された駆動軸及び従動軸と、これら駆動軸及び従動軸の対向側の軸端にそれぞれ固定した円板状の駆動側永久磁石及び従動側永久磁石とを備え、この駆動側永久磁石及び従動側永久磁石の対向面には、各々円周方向に複数対の磁極が着磁された磁極パターンを備え、前記磁極の吸引力により前記駆動軸及び従動軸を非接触で結合してトルク伝達する磁気カップリング装置において、前記駆動側永久磁石及び従動側永久磁石に形成された各々の磁極パターンの内周または外周には、単極に着磁された円環状の単極パターンが形成され、これら単極パターンを互いに面対向させたことを要旨としている。  In order to solve the above-mentioned problems, a magnetic coupling device according to the present invention is fixed to a drive shaft and a driven shaft arranged so as to have the same axis, and shaft ends on opposite sides of the drive shaft and the driven shaft. A disk-shaped drive-side permanent magnet and a driven-side permanent magnet are provided, and a magnetic pole pattern in which a plurality of pairs of magnetic poles are magnetized in the circumferential direction is provided on opposing surfaces of the drive-side permanent magnet and the driven-side permanent magnet. In the magnetic coupling device for transmitting torque by coupling the drive shaft and the driven shaft in a non-contact manner by the attractive force of the magnetic pole, of the magnetic pole patterns formed on the drive-side permanent magnet and the driven-side permanent magnet The gist is that an annular single pole pattern magnetized to a single pole is formed on the circumference or the outer circumference, and these single pole patterns are face-to-face with each other.

さらに、本発明の磁気カップリング装置は、駆動軸及び従動軸が各々軸受によって支持され、駆動側永久磁石及び従動側永久磁石の磁極パターンの磁極の吸引力により、互いに対向する方向に付勢される構成としている。  Further, in the magnetic coupling device of the present invention, the drive shaft and the driven shaft are respectively supported by bearings, and are urged in directions opposite to each other by the attractive force of the magnetic pole pattern of the drive-side permanent magnet and the driven-side permanent magnet. The configuration is as follows.

本発明の磁気カップリング装置によれば、駆動側永久磁石及び従動側永久磁石に形成された各々の磁極パターンの内周または外周に、単極に着磁された円環状の単極パターンを形成し、これら単極パターンを互いに面対向させたことにより、トルクを伝達させるために駆動側永久磁石と従動側永久磁石を近づけたときに、同極の単極パターン同士が反発することから、磁極パターンの磁極の吸引力が弱められる。この結果、駆動軸と従動軸を支持する各々の軸受に加わる軸方向の負荷が低減されることから、軸受に与えるストレスが低減され、軸受の損傷等を未然に防止するとともに、長寿命にすることが可能となる。  According to the magnetic coupling device of the present invention, an annular single pole pattern magnetized to a single pole is formed on the inner circumference or the outer circumference of each magnetic pole pattern formed on the drive side permanent magnet and the driven side permanent magnet. However, since these single-pole patterns face each other, when the drive-side permanent magnet and the driven-side permanent magnet are brought closer to transmit torque, the same-pole single-pole patterns repel each other. The attraction force of the magnetic pole of the pattern is weakened. As a result, since the axial load applied to each bearing that supports the drive shaft and the driven shaft is reduced, the stress applied to the bearing is reduced, the bearing is prevented from being damaged and the life is extended. It becomes possible.

また、駆動軸と従動軸とを非接触で結合してトルク伝達するときには、駆動側永久磁石及び従動側永久磁石に形成された各々の磁極パターンの磁極によって伝達されるので、磁気カップリング装置としての機能を損なうことはない。  Further, when torque is transmitted by connecting the drive shaft and the driven shaft in a non-contact manner, the torque is transmitted by the magnetic poles of the respective magnetic pole patterns formed on the drive-side permanent magnet and the driven-side permanent magnet. There is no loss of functionality.

本発明による磁気カップリング装置は、同一の軸心となるように配置された駆動軸及び従動軸は、軸受によって各々支持されている。これら駆動軸及び従動軸の対向側の軸端にそれぞれ固定した円板状の駆動側永久磁石及び従動側永久磁石が固定されている。この駆動側永久磁石及び従動側永久磁石の対向面には、各々円周方向に複数対の磁極が着磁された磁極パターンが形成されていて、磁極の吸引力により前記駆動軸及び従動軸を非接触で結合してトルク伝達するように構成されている。そして、駆動側永久磁石及び従動側永久磁石に形成された各々の磁極パターンの内周または外周には、単極に着磁された円環状の単極パターンが形成され、これら単極パターンを互いに面対向させている。  In the magnetic coupling device according to the present invention, the drive shaft and the driven shaft arranged so as to have the same axis are respectively supported by bearings. Disk-like drive-side permanent magnets and driven-side permanent magnets fixed to the shaft ends on the opposite sides of these drive shafts and driven shafts are fixed. A magnetic pole pattern in which a plurality of pairs of magnetic poles are magnetized in the circumferential direction is formed on the opposing surfaces of the drive-side permanent magnet and the driven-side permanent magnet, and the drive shaft and the driven shaft are moved by the magnetic attraction force. It is configured to transmit torque by coupling without contact. An annular single-pole pattern magnetized to a single pole is formed on the inner or outer periphery of each magnetic pole pattern formed on the drive-side permanent magnet and the driven-side permanent magnet, and these single-pole patterns are mutually connected. Face to face.

以下、図面に基いて本発明の好適な実施例について説明する。図1は、本発明による面対向型磁気カップリング装置の概要構成を示した説明図であり、同一の軸心となるように配置された駆動軸1及び従動軸2の軸端には、それぞれ円板状の駆動側永久磁石3及び従動側永久磁石4が固定されている。この駆動側永久磁石3及び従動側永久磁石4は、大きな伝達トルクが要求される場合には、ネオジム磁石を使用することが望ましい。その他、フェライト磁石等の各種の永久磁石を使用しても良い。この駆動側永久磁石3及び従動側永久磁石4の対向面には、N極及びS極を一対とした複数対の磁極5a、6aが円周方向に着磁することにより、磁極パターン5、6が形成されている。図1に示した磁極パターン5、6には、4対8極が着磁されている。さらに、駆動側永久磁石3及び従動側永久磁石4に形成された各々の磁極パターン5、6の外周には、例えば、N極の単極に着磁された円環状の単極パターン7、8が形成され、これら単極パターン7、8と磁極パターン5、6が、同一の軸心となるように互いに面対向させている。そして、磁極パターン5、6の磁極5a、6aの吸引力により、駆動軸1及び従動軸2を非接触で結合してトルク伝達するように構成されている。  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing a schematic configuration of a surface-facing magnetic coupling device according to the present invention. At the shaft ends of a drive shaft 1 and a driven shaft 2 arranged so as to have the same axis, A disk-shaped drive-side permanent magnet 3 and a driven-side permanent magnet 4 are fixed. The drive-side permanent magnet 3 and the driven-side permanent magnet 4 are preferably neodymium magnets when a large transmission torque is required. In addition, various permanent magnets such as ferrite magnets may be used. A plurality of pairs of magnetic poles 5a and 6a, each having a pair of N and S poles, are magnetized in the circumferential direction on the opposing surfaces of the drive-side permanent magnet 3 and the driven-side permanent magnet 4, so that the magnetic pole patterns 5, 6 Is formed. In the magnetic pole patterns 5 and 6 shown in FIG. 1, 4 to 8 poles are magnetized. Further, on the outer periphery of each of the magnetic pole patterns 5 and 6 formed on the drive side permanent magnet 3 and the driven side permanent magnet 4, for example, annular single pole patterns 7 and 8 magnetized to N pole single poles. The single-pole patterns 7 and 8 and the magnetic pole patterns 5 and 6 face each other so as to have the same axis. The drive shaft 1 and the driven shaft 2 are coupled in a non-contact manner by the attractive force of the magnetic poles 5a and 6a of the magnetic pole patterns 5 and 6 to transmit torque.

図2は、面対向型磁気カップリング装置全体の構成を示した構成図であり、軸端にそれぞれ円板状の駆動側永久磁石3及び従動側永久磁石4が固定された駆動軸1及び従動軸2が軸受9、10によって回転自在に支持されている。これら軸受9、10は、ベース部11に配設された保持部12によって保持されている。また、駆動側永久磁石3と従動側永久磁石4との間は所定寸法離間させていて、その間には、例えばアクリル樹脂等の合成樹脂又はアルミニウム等の非磁性金属からなる隔壁13が、ベース部11に一端を固定した状態で配設されている。因みに、図示右方は駆動側として、駆動軸1、駆動側永久磁石3及び軸受9が大気中に配設されている。また、図示左方は従動側として、従動軸2、従動側永久磁石4及び軸受10が、例えば真空層や水槽の内部に配設されている。大気中と真空層や水槽との間は、隔壁13によって仕切られ、互いの流入を阻止している。  FIG. 2 is a configuration diagram showing the overall configuration of the surface-facing magnetic coupling device. The drive shaft 1 and the driven shaft each have a disk-like drive-side permanent magnet 3 and a driven-side permanent magnet 4 fixed to the shaft ends, respectively. The shaft 2 is rotatably supported by bearings 9 and 10. These bearings 9 and 10 are held by a holding portion 12 disposed on the base portion 11. Further, the drive-side permanent magnet 3 and the driven-side permanent magnet 4 are spaced apart from each other by a predetermined dimension, and a partition wall 13 made of a synthetic resin such as acrylic resin or a nonmagnetic metal such as aluminum is interposed between the base permanent portion and the base permanent portion. 11 with one end fixed. Incidentally, the drive shaft 1, the drive-side permanent magnet 3, and the bearing 9 are disposed in the atmosphere on the right side of the drawing as the drive side. Further, the driven shaft 2, the driven permanent magnet 4, and the bearing 10 are disposed in the vacuum layer or the water tank, for example, as the driven side on the left side in the drawing. The atmosphere, the vacuum layer and the water tank are partitioned by a partition wall 13 to prevent mutual inflow.

このように構成された面対向型磁気カップリング装置において、図示しない回転駆動源から伝達されて駆動軸1及び駆動側永久磁石3が回転すると、磁極パターン5の磁極5aに磁極パターン6の磁極6aが吸引され、その吸引力によって従動側永久磁石4が従動回転する。その結果、従動側永久磁石4と共に従動軸2に伝達されることにより、トルクが伝達される。  In the face-to-face type magnetic coupling device configured as described above, when the drive shaft 1 and the drive-side permanent magnet 3 are rotated by being transmitted from a rotation drive source (not shown), the magnetic pole 6a of the magnetic pole pattern 6 is switched to the magnetic pole 5a of the magnetic pole pattern 5. And the driven permanent magnet 4 is driven to rotate by the attractive force. As a result, torque is transmitted by being transmitted to the driven shaft 2 together with the driven permanent magnet 4.

トルク伝達は、磁極パターン5、6の磁極5a6aの吸引力が必要となり、ネオジム磁石を使用した場合には、図4に示す矢示のように、大きな吸引力が生じる。この吸引力は、各々の磁極パターン5、6の外周に着磁された単極の円環状の単極パターン7、8を対向させることよって低減させるようにしている。すなわち、図4に示す矢示ように、単極の円環状の単極パターン7、8は同極に着磁されているので、対応させたときに、互いに反発力が発生する。このため、磁極パターン5、6による吸引力から、単極パターン7、8による反発力が差し引かれ、この結果、駆動軸1、2には、軸受9、10に悪影響を与えない程度の適度の軸方向のトルクが発生する。この単極パターン7、8による反発力は、単極パターン7、8の面積や着磁力を変化させることにより調整することができる。  Torque transmission requires the attractive force of the magnetic poles 5a6a of the magnetic pole patterns 5 and 6, and when a neodymium magnet is used, a large attractive force is generated as shown by the arrows in FIG. This attractive force is reduced by making the single-pole annular single-pole patterns 7 and 8 magnetized on the outer circumferences of the magnetic pole patterns 5 and 6 face each other. That is, as shown by the arrows in FIG. 4, since the single-pole annular single-pole patterns 7 and 8 are magnetized to the same pole, repulsive forces are generated when matched. For this reason, the repulsive force due to the single-pole patterns 7 and 8 is subtracted from the attractive force due to the magnetic pole patterns 5 and 6, and as a result, the drive shafts 1 and 2 have an appropriate amount that does not adversely affect the bearings 9 and 10. Axial torque is generated. The repulsive force due to the monopolar patterns 7 and 8 can be adjusted by changing the area and the magnetic force of the monopolar patterns 7 and 8.

図3は、駆動軸1及び従動軸2の軸端に固定される円板状の駆動側永久磁石3及び従動側永久磁石4の固定手段を示す断面図であり、一方の従動軸2の軸端には、Dカット部2aが形成され、軸端の中心には、ネジ穴2bが形成されている。また、円板状の従動側永久磁石4は、アルミニウム等の金属材からなるケース13に嵌合固着されて収納されている。ケース13の中央には、透孔13aが穿設されている。従動側永久磁石4を収納したケース13の反対面には、突部13bが一体形成され、その軸方向中央には、従動軸2の軸端を挿入する嵌合孔13cが形成されている。この嵌合孔13cは、Dカット部1aに対応するように形成されていて、ケース13と従動軸2とが回転しないように構成されている。そして、ケース13の透孔13aにビス14を挿通して従動軸2のネジ穴2bに螺合することにより、駆動側永久磁石3と駆動軸1とが一体に構成される。なお、固定手段としては、上述した手段の他、キー溝による固定、セットビスによる固定、あるいは、締め込みによる固定等を適宜採用しても良い。  FIG. 3 is a cross-sectional view showing a fixing means for the disk-like drive-side permanent magnet 3 and the driven-side permanent magnet 4 fixed to the shaft ends of the drive shaft 1 and the driven shaft 2. A D-cut portion 2a is formed at the end, and a screw hole 2b is formed at the center of the shaft end. The disk-shaped driven permanent magnet 4 is fitted and fixed in a case 13 made of a metal material such as aluminum. A through hole 13 a is formed in the center of the case 13. A protrusion 13b is integrally formed on the opposite surface of the case 13 housing the driven-side permanent magnet 4, and a fitting hole 13c for inserting the shaft end of the driven shaft 2 is formed at the center in the axial direction. The fitting hole 13c is formed so as to correspond to the D-cut portion 1a, and is configured so that the case 13 and the driven shaft 2 do not rotate. Then, the screw 14 is inserted into the through hole 13a of the case 13 and screwed into the screw hole 2b of the driven shaft 2, whereby the drive side permanent magnet 3 and the drive shaft 1 are integrally configured. As the fixing means, in addition to the above-described means, fixing by a key groove, fixing by a set screw, fixing by tightening, or the like may be appropriately employed.

図5は、本発明の他の実施例を示し、駆動側永久磁石3及び従動側永久磁石4に形成された各々の磁極パターン5、6の内周には、例えば、N極の単極に着磁された円環状の単極パターン20、21が形成され、これら単極パターン20、21と磁極パターン5、6が、同一の軸心となるように互いに面対向させるようにしている。この実施例においても、磁極パターン5、6による吸引力から、単極パターン20、21による反発力が差し引かれ、この結果、駆動軸1、2には、軸受9、10に悪影響を与えない程度の適度の軸方向のトルクが発生することは、前述した例と同様である。なお、この単極パターン20、21による反発力は、単極パターン20、21面積や着磁力を変化させることにより調整することができることも前述した例と同様である。  FIG. 5 shows another embodiment of the present invention, in which the inner circumference of each of the magnetic pole patterns 5 and 6 formed on the drive side permanent magnet 3 and the driven side permanent magnet 4 is, for example, an N pole single pole. Magnetized annular single pole patterns 20 and 21 are formed, and the single pole patterns 20 and 21 and the magnetic pole patterns 5 and 6 face each other so as to have the same axis. Also in this embodiment, the repulsive force due to the monopolar patterns 20 and 21 is subtracted from the attractive force due to the magnetic pole patterns 5 and 6, and as a result, the drive shafts 1 and 2 are not adversely affected to the bearings 9 and 10. The generation of a moderate axial torque is the same as in the example described above. In addition, it is the same as that of the example mentioned above that the repulsive force by this monopolar pattern 20 and 21 can be adjusted by changing the monopole patterns 20 and 21 area and an applied magnetic force.

以上、本発明を実施例に基づき具体的に説明したが、本発明は上記実施例に限定されるものではなく、その要旨を逸脱しない範囲で種々変形可能であることは言うまでもない。例えば、上述した実施例においては、磁極パターンの磁極を8極としたが、2極以上の偶数極に着磁しても良い。また、円板状の駆動側永久磁石及び従動側永久磁石をケースの収納するようにして駆動軸や従動軸に固定するようにしたが、永久磁石または駆動軸等に固定手段を設けて、直接固定するようにしても良く、この固定手段は、周知の適宜の方法を採用しても良い。  Although the present invention has been specifically described above based on the embodiments, it is needless to say that the present invention is not limited to the above embodiments and can be variously modified without departing from the gist thereof. For example, in the above-described embodiment, the magnetic pole pattern has eight magnetic poles, but may be magnetized to even poles of two or more poles. In addition, the disk-like drive-side permanent magnet and the driven-side permanent magnet are fixed to the drive shaft and the driven shaft so as to be housed in the case. However, a fixing means is provided on the permanent magnet or the drive shaft to directly The fixing unit may be fixed, and a known appropriate method may be adopted as the fixing unit.

本発明は、非接触でトルク伝達を行う磁気カップリング装置に適用可能である。  The present invention is applicable to a magnetic coupling device that transmits torque without contact.

本発明による磁気カップリング装置の要旨構成を示した説明図である。It is explanatory drawing which showed the summary structure of the magnetic coupling apparatus by this invention. 面対向型磁気カップリング装置全体の構成を示した構成図である。It is the block diagram which showed the structure of the whole surface opposing type magnetic coupling apparatus. 駆動側永久磁石及び従動側永久磁石の固定手段の一例を示す断面図である。It is sectional drawing which shows an example of the fixing means of a drive side permanent magnet and a driven side permanent magnet. 磁極パターンによる吸引力と単極パターンによる反発力の状態を示す説明図である。It is explanatory drawing which shows the state of the attractive force by a magnetic pole pattern, and the repulsive force by a monopolar pattern. 本発明による磁気カップリング装置の他の実施例を示す説明図である。It is explanatory drawing which shows the other Example of the magnetic coupling apparatus by this invention. 従来の磁気カップリング装置を示す説明図である。It is explanatory drawing which shows the conventional magnetic coupling apparatus. 従来の磁気カップリング装置における吸引力の状態を示す説明図である。It is explanatory drawing which shows the state of the attractive force in the conventional magnetic coupling apparatus.

1 駆動軸
2 従動軸
3 駆動側永久磁石
4 従動側永久磁石
5、6 磁極パターン
5a、6a 磁極
7、8 単極パターン
9、10 軸受
DESCRIPTION OF SYMBOLS 1 Drive shaft 2 Drive shaft 3 Drive-side permanent magnet 4 Drive-side permanent magnet 5, 6 Magnetic pole pattern 5a, 6a Magnetic pole 7, 8 Single-pole pattern 9, 10 Bearing

Claims (2)

同一の軸心となるように配置された駆動軸及び従動軸と、これら駆動軸及び従動軸の対向側の軸端にそれぞれ固定した円板状の駆動側永久磁石及び従動側永久磁石とを備え、この駆動側永久磁石及び従動側永久磁石の対向面には、各々円周方向に複数対の磁極が着磁された磁極パターンを備え、前記磁極の吸引力により前記駆動軸及び従動軸を非接触で結合してトルク伝達する磁気カップリング装置において、前記駆動側永久磁石及び従動側永久磁石に形成された各々の磁極パターンの内周または外周には、単極に着磁された円環状の単極パターンが形成され、これら単極パターンを互いに面対向させたことを特徴とする面対向型磁気カップリング装置。  A drive shaft and a driven shaft arranged so as to have the same axis; and a disk-like drive-side permanent magnet and a driven-side permanent magnet fixed to shaft ends on the opposite sides of the drive shaft and the driven shaft, respectively. The opposing surfaces of the drive-side permanent magnet and the driven-side permanent magnet are each provided with a magnetic pole pattern in which a plurality of pairs of magnetic poles are magnetized in the circumferential direction, and the drive shaft and the driven shaft are not connected by the attractive force of the magnetic poles. In a magnetic coupling device that couples by contact and transmits torque, an inner periphery or an outer periphery of each magnetic pole pattern formed on the driving-side permanent magnet and the driven-side permanent magnet has an annular shape magnetized as a single pole. A surface-facing magnetic coupling device, wherein monopolar patterns are formed and these monopolar patterns face each other. 前記駆動軸及び従動軸は、各々軸受によって支持され、駆動側永久磁石及び従動側永久磁石の磁極パターンの磁極の吸引力により、前記駆動軸及び従動軸が互いに対向する方向に付勢されている請求項1に記載の面対向型磁気カップリング装置。  The drive shaft and the driven shaft are each supported by a bearing, and are urged in a direction in which the drive shaft and the driven shaft are opposed to each other by an attractive force of the magnetic pole pattern of the drive-side permanent magnet and the driven-side permanent magnet. The surface-facing magnetic coupling device according to claim 1.
JP2010219891A 2010-09-09 2010-09-09 Surface facing type magnetic coupling device Withdrawn JP2012057790A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015013258A (en) * 2013-07-05 2015-01-22 株式会社パウレック Granule treatment apparatus
KR101511164B1 (en) * 2013-12-20 2015-04-20 주식회사 해피모터스 Structure of the non-contact power transmission device using magnetic

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015013258A (en) * 2013-07-05 2015-01-22 株式会社パウレック Granule treatment apparatus
KR101511164B1 (en) * 2013-12-20 2015-04-20 주식회사 해피모터스 Structure of the non-contact power transmission device using magnetic

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