JPH0527331U - Magnetic coupling - Google Patents
Magnetic couplingInfo
- Publication number
- JPH0527331U JPH0527331U JP7599991U JP7599991U JPH0527331U JP H0527331 U JPH0527331 U JP H0527331U JP 7599991 U JP7599991 U JP 7599991U JP 7599991 U JP7599991 U JP 7599991U JP H0527331 U JPH0527331 U JP H0527331U
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- cylindrical magnet
- side cylindrical
- driven
- magnet
- shaft
- Prior art date
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Abstract
(57)【要約】
【目的】 高い動力伝達能力を得ることができる上に、
この動力伝達能力を維持できる。
【構成】 ボールジヨイント１４により、駆動軸５及び
スリーブ１１と被駆動軸５’及びハブ１２の対向軸心部
を連結し、駆動側円筒形磁石１３と被駆動側円筒形磁石
１３’との位置を正確に決めて、これら２つの磁石１
３、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。また駆動側円筒形磁
石１３の内周面と被駆動側円筒形磁石１３’の外周面と
にクラウニングを施し、角度ミスアライメントが生じた
場合でも、駆動側円筒形磁石１３と被駆動側円筒形磁石
１３’との間の隙間を変化させないようにして、高いの
動力伝達能力を維持するようにしている。
(57) [Summary] [Purpose] In addition to obtaining high power transmission capability,
This power transmission capability can be maintained. A ball joint 14 connects the drive shaft 5 and the sleeve 11, the driven shaft 5'and the opposing shaft center of the hub 12, and connects the drive-side cylindrical magnet 13 and the driven-side cylindrical magnet 13 '. Precisely position the two magnets 1
The space between 3 and 13 'is narrowed and the magnetic flux density is increased to obtain high power transmission capability. Even if the inner peripheral surface of the driving side cylindrical magnet 13 and the outer peripheral surface of the driven side cylindrical magnet 13 'are crowned to cause angular misalignment, the driving side cylindrical magnet 13 and the driven side cylindrical magnet 13 The gap between the magnet 13 'and the magnet 13' is not changed to maintain a high power transmission capability.
Description
【０００１】[0001]
本考案は、磁気カツプリングに関するものである。 The present invention relates to magnetic coupling.
【０００２】[0002]
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 円周方向に磁化された大径の駆動側円筒形磁石、３’が円周方向に磁化された小 径の被駆動側円筒形磁石、５が上記駆動側円筒形磁石３に一体の駆動軸、５’が 上記被駆動側円筒形磁石３’に一体の被駆動軸、６、６’が軸受で、小径の被駆 動側円筒形磁石３’が大径の駆動側円筒形磁石３内に位置している。 A conventional magnetic coupling will be described with reference to FIG. 3, where 1 and 2 are magnet supports, 3 is a large-diameter drive-side cylindrical magnet magnetized in the circumferential direction, and 3'is a small-diameter magnetized in the circumferential direction. Driven side cylindrical magnet, 5 is a driving shaft integrated with the driving side cylindrical magnet 3, 5'is a driven shaft integrated with the driven side cylindrical magnet 3 ', 6 and 6'are bearings, and have a small diameter. The driven-side cylindrical magnet 3 ′ is located inside the large-diameter driving-side cylindrical magnet 3.
【０００３】 上記図３に示す従来の磁気カツプリングでは、駆動軸５の円筒形磁石３の極と 被駆動軸５’の円筒状磁石３’の極とをＮーＳ或いはＳーＮの状態に向かい合わ せた場合、半径方向の隙間の関係をＸ1 、Ｘ2 、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 もそれらの力のバランスが釣り合っている。In the conventional magnetic coupling shown in FIG. 3, the pole of the cylindrical magnet 3 of the drive shaft 5 and the pole of the cylindrical magnet 3 ′ of the driven shaft 5 ′ are set to the NS or SN state. When facing each other, if the radial clearances are X 1 , X 2 , X 3 , X 4 , Y 1 , Y 2 , Y 3 , Y 4 , the two cylindrical magnets 3, 3 ' They are attracted to each other in the radial direction, but the balance of their forces is balanced.
【０００４】 この状態で、駆動軸５及び被駆動軸５’を軸受６、６’で支持することにより 、半径方向の隙間を固定する。この状態で、駆動軸５及び駆動側円筒形磁石３が 周り始めると、被駆動側円筒形磁石３’が駆動側円筒形磁石３に引き寄せられて 、被駆動軸５’も周り始める。 そして回転の各瞬間の半径方向の隙間の相対関係は、回転していない場合の相 対関係と同様であり、力のバランスは釣り合っている。In this state, the drive shaft 5 and the driven shaft 5 ′ are supported by bearings 6 and 6 ′ to fix the radial gap. In this state, when the drive shaft 5 and the drive side cylindrical magnet 3 start to rotate, the driven side cylindrical magnet 3'is attracted to the drive side cylindrical magnet 3 and the driven shaft 5'also starts to rotate. The relative relationship between the radial gaps at each moment of rotation is similar to the relative relationship when the rotor is not rotating, and the forces are balanced.
【０００５】[0005]
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、駆動側円筒形磁石３と被駆動側円筒形磁石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ようになっている。 この動力伝達能力を向上させるためには、駆動側円筒形磁石３と被駆動側円筒 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 the shear resistance of the magnetic flux existing between the driving side cylindrical magnet 3 and the driven side cylindrical magnet 3 '. In order to improve the power transmission capability, it is necessary to increase the magnetic flux density between the driving side cylindrical magnet 3 and the driven side 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には、磁 石間の間隔を狭くする方法が最も有効である。 しかし前記図３に示す従来の磁気カツプリングでは、小径の被駆動側円筒形磁 石３’が大径の駆動側円筒形磁石３内に位置しており、磁石の間隔を狭い状態に 保持するには、軸や軸受を充分に剛にする必要がある。When increasing the magnetic flux density, there are a method of using a strong magnet and a method of narrowing the interval between the facing magnets. To increase the magnetic flux density with existing materials and current technology, The most effective method is to reduce the interval. However, in the conventional magnetic coupling shown in FIG. 3, the driven-side cylindrical magnet 3'having a small diameter is located inside the driving-side cylindrical magnet 3 having a large diameter, and it is difficult to keep the magnet spacing small. Requires the shaft and bearing to be sufficiently rigid.
【０００７】 また磁石の対向面が平坦であるため、角度ミスアライメントがある場合、磁石 の間隔に広い部分と狭い部分とが生じて、磁束密度が一定に保持されなくなると 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、この動力伝達能力を維持することができ る磁気カツプリングを提供しようとする点にある。Further, since the facing surfaces of the magnets are flat, there is a problem that when there is angular misalignment, a wide portion and a narrow portion occur in the gap between the magnets, and the magnetic flux density cannot be maintained constant. The present invention is proposed in view of the above problems, and an object of the present invention is to provide a magnetic coupling capable of maintaining a high power transmission capability while maintaining a high power transmission capability. And there is a point.
【０００８】[0008]
上記の目的を達成するために、本考案の磁気カツプリングは、駆動軸の回転を 被駆動軸に伝えるカツプリングにおいて、前記駆動軸及び被駆動軸の対向端部に 円周方向に磁化された径の異なる円筒形磁石を取付けて、一方の円筒形磁石を他 方の円筒形磁石内に位置させ、これら駆動軸及び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て、上記各円筒形磁石間の距離を一定に保持している。 In order to achieve the above object, the magnetic coupling of the present invention is a coupling for transmitting the rotation of a drive shaft to a driven shaft, in which the opposite ends of the drive shaft and the driven shaft have a circumferentially magnetized diameter. Attaching different cylindrical magnets, position one cylindrical magnet inside the other cylindrical magnet, connect the opposing shaft center parts of these drive shaft and driven shaft with a ball joint, and The distance between them is kept constant.
【０００９】 また本考案の磁気カツプリングは、前記円筒形磁石にクラウニングを設けてい る。In the magnetic coupling of the present invention, the cylindrical magnet is provided with crowning.
【００１０】[0010]
本考案の磁気カツプリングは前記のようにボールジヨイントにより、駆動軸と 被駆動軸の対向軸心部を連結し、駆動側円筒形磁石と被駆動側円筒形磁石との位 置を正確に決めて、これら２つの磁石の間隔を狭くし、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。また駆動側円筒形磁石の内周面と被駆動側 円筒形磁石の外周面とにクラウニングを施し、角度ミスアライメントが生じた場 合でも、駆動側円筒形磁石と被駆動側円筒形磁石との間の隙間を変化させないよ うにして、高いの動力伝達能力を維持するようにしている。 As described above, the magnetic coupling of the present invention connects the driving shaft and the driven shaft with the opposing axial center portions by the ball joint to accurately determine the positions of the driving side cylindrical magnet and the driven side cylindrical magnet. Thus, the gap between these two magnets is narrowed to increase the magnetic flux density to obtain high power transmission capability. Even if the inner peripheral surface of the driving-side cylindrical magnet and the outer peripheral surface of the driven-side cylindrical magnet are crowned to cause angular misalignment, the driving-side cylindrical magnet and the driven-side cylindrical magnet are separated from each other. The gap between them is not changed so that high power transmission capability is maintained.
【００１１】[0011]
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、１１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 された径の大きい駆動側円筒形磁石、１３’が円周方向に磁化された径の小さい 被駆動側円筒形磁石で、駆動側円筒形磁石１３が大径のスリーブ１３の内周面に 固定され、被駆動側円筒形磁石１３’が小径のハブ１３’の内周面に固定されて 、被駆動側円筒形磁石１３’が上記駆動側円筒形磁石１３内に位置している。 1 and 2, a magnetic coupling of the present invention will be described. Reference numeral 5 in FIG. 1 is a drive shaft, 5'is a driven shaft, 6 is a bearing rotatably supporting the drive shaft 5, 6 'Is a bearing for rotatably supporting the driven shaft 5', 11 is a large diameter sleeve fixed to the driving shaft 5, 12 is a small diameter hub fixed to the driven shaft 5 ', and 13 is magnetized in the circumferential direction. The driving side cylindrical magnet 13 has a large diameter and the driven side cylindrical magnet 13 ′ is magnetized in the circumferential direction and has a small diameter. The driving side cylindrical magnet 13 is fixed to the inner peripheral surface of the large diameter sleeve 13. The driven side cylindrical magnet 13 ′ is fixed to the inner peripheral surface of the hub 13 ′ having a small diameter, and the driven side cylindrical magnet 13 ′ is located inside the driving side cylindrical magnet 13.
【００１２】 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の軸心部とが連結されて、駆動側円筒形磁石１３と被駆動側円筒 形磁石１３’との間の間隔が充分な磁束密度を得られる程度に狭く保持されてい る。 上記駆動側円筒形磁石１３の内周面と上記被駆動側円筒形磁石１３’の外周面 とには、円弧状のクラウニングが施されている。そのため、角度ミスアライメン トが生じた場合でも、駆動側円筒形磁石１３と被駆動側円筒形磁石１３’との間 の隙間が変化しなくて、一定の動力伝達能力が保持される。Reference numeral 14 denotes a ball joint, and the shaft portion of the sleeve 11 and the shaft portion of the hub 12 are connected by the ball joint 14 so that the driving side cylindrical magnet 13 and the driven side cylindrical magnet 13 ′ are connected. The distance between and is kept small enough to obtain a sufficient magnetic flux density. An arc-shaped crowning is applied to the inner peripheral surface of the driving side cylindrical magnet 13 and the outer peripheral surface of the driven side cylindrical magnet 13 '. Therefore, even if an angular misalignment occurs, the gap between the driving side cylindrical magnet 13 and the driven side cylindrical magnet 13 'does not change, and a constant power transmission capability is maintained.
【００１３】 図２は、図１の矢視ＡーＡ線に沿う縦断正面図である。スリーブ１１（駆動軸 ５）の円筒形磁石３の極と、ハブ１２（被駆動軸５’）の円筒状磁石３’の極と がＮーＳ或いはＳーＮの状態で向かい合っている。 次に前記図１、２に示す磁気カツプリングの作用を具体的に説明する。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、磁束密度を高めることにより、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. The pole of the cylindrical magnet 3 of the sleeve 11 (driving shaft 5) and the pole of the cylindrical magnet 3'of the hub 12 (driven shaft 5 ') face each other in the NS or SN state. Next, the operation of the magnetic coupling shown in FIGS. The magnetic coupling transmits power by the shear resistance of the magnetic flux interposed between the facing magnets, and the power transmission capability can be enhanced by increasing the magnetic flux density.
【００１４】 磁束密度は、対向する磁石の距離の２乗に反比例する性質があり、高い動力伝 達能力を得るためには、磁石の間隔をできるだけ狭くする必要がある。磁石の間 隔を可能な限り狭く保持するためには、２つの磁石の位置を正確に決める必要が ある。 本考案では、ボールジヨイント１４により、スリーブ１１（駆動軸５）の軸心 部と、ハブ１２（被駆動軸５’）の軸心部とを連結し、駆動側円筒形磁石１３と 被駆動側円筒形磁石１３’との位置を正確に決めて、これら２つの磁石１３、１ ３’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 has the property of being inversely proportional to the square of the distance between the facing magnets, and it is necessary to make the spacing between the magnets as narrow as possible in order to obtain high power transmission capability. In order to keep the magnet spacing as narrow as possible, it is necessary to accurately position the two magnets. In the present invention, the ball joint 14 connects the axial center of the sleeve 11 (driving shaft 5) and the axial center of the hub 12 (driven shaft 5 '), and drives the cylindrical magnet 13 on the driving side and the driven side. The position of the side cylindrical magnet 13 'is accurately determined, the gap between these two magnets 13 and 13' is narrowed, the magnetic flux density is increased, and high power transmission capability is obtained.
【００１５】 また駆動側円筒形磁石１３の内周面と被駆動側円筒形磁石１３’の外周面とに 、円弧状のクラウニングを施し、角度ミスアライメントが生じた場合でも、駆動 側円筒形磁石１３と被駆動側円筒形磁石１３’との間の隙間を変化させないよう にして、高い動力伝達能力を維持するようにしている。Further, even if the inner peripheral surface of the driving side cylindrical magnet 13 and the outer peripheral surface of the driven side cylindrical magnet 13 ′ are arc-shaped crowned, even if angular misalignment occurs, the driving side cylindrical magnet 13 A high power transmission capability is maintained by not changing the gap between the driven magnet 13 and the driven-side cylindrical magnet 13 '.
【００１６】[0016]
本考案の磁気カツプリングは前記のようにボールジヨイントにより、駆動軸と 被駆動軸の対向軸心部を連結し、駆動側円筒形磁石と被駆動側円筒形磁石との位 置を正確に決めて、これら２つの磁石の間隔を狭くし、磁束密度を高めており、 高い動力伝達能力を得ることができる。 As described above, the magnetic coupling of the present invention connects the driving shaft and the driven shaft with the opposing axial center portions by the ball joint to accurately determine the positions of the driving side cylindrical magnet and the driven side cylindrical magnet. Thus, the gap between these two magnets is narrowed to increase the magnetic flux density, and high power transmission capability can be obtained.
【００１７】 また駆動側円筒形磁石の内周面と被駆動側円筒形磁石の外周面とにクラウニン グを施し、角度ミスアライメントが生じた場合でも、駆動側円筒形磁石と被駆動 側円筒形磁石との間の隙間を変化させないようにしており、高い動力伝達能力を 維持することができる。Further, even if the inner peripheral surface of the driving-side cylindrical magnet and the outer peripheral surface of the driven-side cylindrical magnet are crowned to cause angular misalignment, the driving-side cylindrical magnet and the driven-side cylindrical magnet are Since the gap between the magnet and the magnet is not changed, 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 vertical side view showing an embodiment of a magnetic coupling according to the present invention.
【図２】図１の矢視Ａー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.
【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 vertical sectional 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 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 The Joint
Claims (2)
リングにおいて、前記駆動軸及び被駆動軸の対向端部に
円周方向に磁化された径の異なる円筒形磁石を取付け
て、一方の円筒形磁石を他方の円筒形磁石内に位置さ
せ、これら駆動軸及び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て、上記各円筒形磁石間の距離を
一定に保持したことを特徴とする磁気カツプリング。1. A coupling for transmitting the rotation of a drive shaft to a driven shaft, wherein cylindrical magnets having different diameters magnetized in a circumferential direction are attached to opposite ends of the drive shaft and the driven shaft, and one cylinder is attached. Characterized in that the shaped magnet is located in the other cylindrical magnet, and the opposing axial center portions of the driving shaft and the driven shaft are connected by a ball joint to keep the distance between the cylindrical magnets constant. And magnetic coupling.
ことを特徴とする請求項１記載の磁気カツプリング。2. The magnetic coupling according to claim 1, wherein the cylindrical magnet is provided with crowning.
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 true JPH0527331U (en) | 1993-04-09 |
| JP2538912Y2 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09257116A (en) * | 1996-03-25 | 1997-09-30 | Ckd Corp | Drive transmission means |
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| 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
Patent Citations (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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09257116A (en) * | 1996-03-25 | 1997-09-30 | Ckd Corp | Drive transmission means |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2538912Y2 (en) | 1997-06-18 |
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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 |