JPS61203865A - Magnetic coupling joint - Google Patents

Magnetic coupling joint

Info

Publication number
JPS61203865A
JPS61203865A JP4261585A JP4261585A JPS61203865A JP S61203865 A JPS61203865 A JP S61203865A JP 4261585 A JP4261585 A JP 4261585A JP 4261585 A JP4261585 A JP 4261585A JP S61203865 A JPS61203865 A JP S61203865A
Authority
JP
Japan
Prior art keywords
casing
vacuum
yoke
shaft
magnetic coupling
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.)
Pending
Application number
JP4261585A
Other languages
Japanese (ja)
Inventor
Eiichi Hazaki
栄市 羽崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4261585A priority Critical patent/JPS61203865A/en
Publication of JPS61203865A publication Critical patent/JPS61203865A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
    • H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

PURPOSE:To reduce an outer diameter for a torque transmission capacity by reducing pressure difference between two chambers disposed at both sides of a sealer, thereby reducing the thickness of the sealer. CONSTITUTION:A rotational shaft 1 led into a vacuum atmosphere is rotatably supported by bearings 3, 4 engaged with a casing 2 of vacuum side. A rotational shaft 12 led to atmospherical side is rotatably supported by bearings 13, 14 engages with a casing 11. A disc-shaped yoke 15 is clamped with the shaft 12, and a magnet 16 is bonded to the yoke 15. The bearings 13, 14 are stopped to move axially by a ring 17 and a stopper ring 18. An oil seal 19 is mounted in the casing 11 between the yoke 15 and the bearing 13. A rotary vacuum pump P is connected with a chamber B formed of the seal 19, the casing and the sealer 10.

Description

【発明の詳細な説明】 〔発明の利用分野］ 本発明は大気中から真空雰囲気中に回転動力を伝える磁
気結合継手装置に係り、特に小形で大きな伝達能力を持
つ磁気結合継手装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a magnetic coupling coupling device that transmits rotational power from the atmosphere to a vacuum atmosphere, and particularly to a magnetic coupling coupling device that is small and has a large transmission capacity.

〔発明の背景〕[Background of the invention]

従来、磁気結合継手装置としては、例えば特開昭５３−
８５２４９号公報に示されるように、一方の回転体と他
方の回転体との対向面にそれぞれ磁石を設け、その磁石
の磁気結合力により、一方の回転体を他方の回転体に伝
達するものがある。Conventionally, as a magnetic coupling joint device, for example, JP-A-53-
As shown in Japanese Patent No. 85249, magnets are provided on the opposing surfaces of one rotating body and the other rotating body, and the magnetic coupling force of the magnets is used to transmit one rotating body to the other rotating body. be.

この磁気結合継手装置はその用途により磁石間にシール
体を設けるものがある。そして、このシール体を備える
磁気結合継手装置を大気と真空雰囲気との間に設けた場
合、このシール体の一方側の大気と他方側の真空との圧
力差によって変形すゐ。この変形を小さくするためには
適度な厚さが必要となり、伝達能力が低下するという欠
点があった。Some magnetic coupling coupling devices are provided with a seal between the magnets depending on their use. When a magnetic coupling coupling device including this seal body is installed between the atmosphere and a vacuum atmosphere, the seal body is deformed due to the pressure difference between the atmosphere on one side and the vacuum on the other side. In order to reduce this deformation, an appropriate thickness is required, which has the disadvantage of reducing transmission ability.

〔発明の目的〕[Purpose of the invention]

本発明の目的は小形で伝達能力の高い磁気結合継手装着
を提供することＦＣある。SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic coupling joint installation that is compact and has high transmission capacity.

〔発明の概要〕[Summary of the invention]

本発明は上記の目的を達成するために、大気側から真空
雰囲気内に回転動力を伝える磁気結合継手装置において
、真空雰囲気内に導かれる第１の軸と大気側に導かれる
第２の軸とを、それぞれケ−シンクに回転可能に支持し
、前記第１の軸と第２の軸との対向端に、少なくともい
ずれか一方に磁石を備えるヨークを取付け、これらのヨ
ーク間にシール体を配置し、このシール体とケーシング
によって第２の軸およびそのヨークを覆う室に真空ポン
プを接続したものである。この構成により、シール体を
挾む画室間の圧力差が小さくなり、シール体の肉厚を薄
くすることができる。その結果、対向する磁石間の距離
を小さくすることができるので、トルク伝達能力に対し
て外径を小さくすることができる。In order to achieve the above object, the present invention provides a magnetic coupling coupling device for transmitting rotational power from the atmosphere side to the vacuum atmosphere, which includes a first shaft guided into the vacuum atmosphere and a second shaft guided into the atmosphere side. are each rotatably supported on a casing, a yoke having a magnet on at least one of the first and second shafts is attached to the opposing ends of the first shaft and the second shaft, and a sealing body is disposed between these yokes. However, a vacuum pump is connected to the chamber covering the second shaft and its yoke through this seal body and casing. With this configuration, the pressure difference between the compartments sandwiching the seal body becomes small, and the wall thickness of the seal body can be made thin. As a result, the distance between the opposing magnets can be reduced, so the outer diameter can be reduced relative to the torque transmission capacity.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の実施例を図面により説明する。 Embodiments of the present invention will be described below with reference to the drawings.

第１図は本発明の装置の一実施例を示すもので、この図
において、真空雰囲気内に導かれる回転軸１は真空側の
ケーシング２に嵌合された軸受３゜４によって回転可能
に支持されている。軸受３゜４はナツト５、止め輪６に
より軸方向の移動を阻止されている。回転軸１の一端に
は磁性体で作られた円柱状のヨーク７がねじ結合されて
いる。この円板状のヨーク７には磁石８が接着されてい
る。FIG. 1 shows an embodiment of the device of the present invention. In this figure, a rotating shaft 1 guided into a vacuum atmosphere is rotatably supported by a bearing 3.4 fitted to a casing 2 on the vacuum side. has been done. The bearing 3.4 is prevented from moving in the axial direction by a nut 5 and a retaining ring 6. A cylindrical yoke 7 made of a magnetic material is screwed to one end of the rotating shaft 1. A magnet 8 is bonded to this disc-shaped yoke 7.

真空側のケーシング２の一端には真空フランジ９が溶接
されている。この真空ケーシング２、真空フランジ９、
シール体１０によって画成される室Ａは真空雰囲気とな
る。大気側のケーシング１１は真空ケーシング２とボル
トで結合されている。A vacuum flange 9 is welded to one end of the casing 2 on the vacuum side. This vacuum casing 2, vacuum flange 9,
The chamber A defined by the seal body 10 is in a vacuum atmosphere. The casing 11 on the atmosphere side is connected to the vacuum casing 2 with bolts.

大気側に導かれる回転軸１２けケーシング１１に嵌合さ
れた軸受１３，１４によって回転可能に支持されている
。回転軸１２′ＶＣは磁性体で作られた円板状のヨーク
１５がねじ結合されている。このヨーク１５には磁石１
６が接着されている。軸受１３．１４はリング１７、止
め輪１８により軸方向移動が阻＋ｈされている。円板状
のヨーク１５と軸受１３との間におけるケーシング１１
にはオイルシール１９が取りつけられている。このオイ
ルシール１９、ケーシング１１とシール体１０とで画成
される室Ｂにはロータリ形の真空ポンプＰが接続されて
いる。It is rotatably supported by bearings 13 and 14 fitted in a casing 11 with a rotating shaft 12 guided to the atmosphere side. A disk-shaped yoke 15 made of a magnetic material is screwed to the rotating shaft 12'VC. This yoke 15 has a magnet 1
6 is glued. The bearings 13 and 14 are prevented from moving in the axial direction by a ring 17 and a retaining ring 18. Casing 11 between disk-shaped yoke 15 and bearing 13
An oil seal 19 is attached to the. A rotary vacuum pump P is connected to a chamber B defined by the oil seal 19, the casing 11, and the seal body 10.

つぎに上述した本発明の装置の一実施例の動作を説明す
る。Next, the operation of one embodiment of the above-mentioned apparatus of the present invention will be explained.

いま、真空ポンプＰを作動させて、室Ｂ内の真空度をｌ
’ｐｏｒｒ程度にすれば、回転軸１が配置された真空雰
囲気の真空度が１Ｏ−６程度の高真空であっても力学的
な圧力差としては非常に小さいので、シール体１０に作
用する力は小さくなるので、シール体１０の厚さを極め
て薄くすることができる。このため対向する磁石８と磁
石１６との間隙を小さくすることができ、磁気吸引力を
大きくすることができるので、大気中に配置された回転
軸１２から真空中に配置された回転軸１に大きな伝達ト
ルクを伝えることができる。Now, operate the vacuum pump P to reduce the degree of vacuum in the chamber B to l.
'porr, even if the degree of vacuum in the vacuum atmosphere in which the rotating shaft 1 is placed is as high as 1O-6, the mechanical pressure difference is very small, so the force acting on the seal body 10 is is small, so the thickness of the seal body 10 can be made extremely thin. Therefore, the gap between the opposing magnets 8 and 16 can be reduced, and the magnetic attraction force can be increased. Can transmit large transmission torque.

第２図は本発明の装置の他の実施例を示すもので、この
実施例は第１図に示す実施例における磁石８のかわりに
ヨークと一体に成形された円板体２０と大気中に配置さ
れた磁石２１との間の吸引力で、回転軸２２０回転動力
を回転軸２３に伝えるように構成したものである。この
ように構成しても、前述した実施例と同様な効果を得る
ことができる。FIG. 2 shows another embodiment of the device of the present invention, in which a disk body 20 integrally formed with a yoke is used instead of the magnet 8 in the embodiment shown in FIG. The rotational power of the rotating shaft 220 is transmitted to the rotating shaft 23 by the attractive force between the arranged magnets 21. Even with this configuration, it is possible to obtain the same effects as in the embodiment described above.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、小形で大きな伝達能力を持つ磁気結合
継手装置を提供することができ、効率向上の効果がある
。According to the present invention, it is possible to provide a magnetic coupling joint device that is small and has a large transmission capacity, and has the effect of improving efficiency.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の装置の一実施例を示す縦断面図、第２
図は本発明の装置の他の実施例の要部を示す縦断面図で
ある。Fig. 1 is a vertical sectional view showing one embodiment of the device of the present invention, Fig.
The figure is a longitudinal sectional view showing the main parts of another embodiment of the device of the present invention.

Claims (1)

【特許請求の範囲】[Claims] １、大気側から真空雰囲気内に回転動力を伝える磁気結
合継手装置において、真空雰囲気内に導かれる第１の軸
と大気側に導かれる第２の軸とを、それぞれケーシング
に回転可能に支持し、前記第１の軸と第２の軸との対向
端に、少なくともいずれか一方に磁石を備えるヨークを
取付け、これらのヨーク間にシール体を配置し、このシ
ール体とケーシングによつて第２の軸およびそのヨーク
を覆う室に、真空ポンプを接続したことを特徴とする磁
気結合継手装置。1. In a magnetic coupling coupling device that transmits rotational power from the atmosphere side to a vacuum atmosphere, a first shaft guided into the vacuum atmosphere and a second shaft guided into the atmosphere side are each rotatably supported in a casing. , a yoke having a magnet on at least one of the first and second shafts is attached to opposing ends of the first shaft and the second shaft, a seal is disposed between these yokes, and the second A magnetic coupling coupling device characterized in that a vacuum pump is connected to a chamber covering the shaft and its yoke.
JP4261585A 1985-03-06 1985-03-06 Magnetic coupling joint Pending JPS61203865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4261585A JPS61203865A (en) 1985-03-06 1985-03-06 Magnetic coupling joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4261585A JPS61203865A (en) 1985-03-06 1985-03-06 Magnetic coupling joint

Publications (1)

Publication Number Publication Date
JPS61203865A true JPS61203865A (en) 1986-09-09

Family

ID=12640925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4261585A Pending JPS61203865A (en) 1985-03-06 1985-03-06 Magnetic coupling joint

Country Status (1)

Country Link
JP (1) JPS61203865A (en)

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