JPS62258268A - Magnetic fluid sealing device - Google Patents
Magnetic fluid sealing deviceInfo
- Publication number
- JPS62258268A JPS62258268A JP61100945A JP10094586A JPS62258268A JP S62258268 A JPS62258268 A JP S62258268A JP 61100945 A JP61100945 A JP 61100945A JP 10094586 A JP10094586 A JP 10094586A JP S62258268 A JPS62258268 A JP S62258268A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- magnet
- groove
- sealing device
- magnet body
- 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
Links
- 239000011553 magnetic fluid Substances 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 title claims abstract description 30
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、２つの部材間のすき間を磁性流体によって密
封する磁性流体シール装置に係り、特に塵埃等を密封す
るに好適な磁性流体シール装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic fluid sealing device that seals a gap between two members with a magnetic fluid, and is particularly suitable for sealing dust and the like. Regarding.
磁性流体シール装置においては、一般的に回転軸部分の
軸封に用いられており、例えば特開昭５９−１６４４６
０号公報に示されるように、すき間内の磁性流体に磁力
的保持力を与えるために、永久磁石とその両側に設けた
磁極片とを備えている。この永久磁石および磁極片は金
属で形成されている。In magnetic fluid seal devices, it is generally used for shaft sealing of rotating shaft parts, for example, Japanese Patent Application Laid-Open No. 59-16446
As shown in Japanese Patent No. 0, a permanent magnet and magnetic pole pieces provided on both sides of the permanent magnet are provided in order to apply a magnetic holding force to the magnetic fluid within the gap. The permanent magnet and pole pieces are made of metal.
上記の従来技術では、永久磁石および磁極片は金属で形
成されているため、これらの部材を非磁性の部材に装着
する場合、加工精度を十分に管理しなければならず、組
付性が良好でないと共に、２次的なシール手段について
配慮されていないため、シール性も良好でなかった。In the above-mentioned conventional technology, the permanent magnet and magnetic pole piece are made of metal, so when attaching these parts to a non-magnetic member, processing accuracy must be sufficiently controlled, resulting in good assembly performance. Furthermore, since no consideration was given to secondary sealing means, the sealing performance was also poor.
本発明は上述の事柄にもとづいてなされたもので、組支
性およびシール性が良好な磁性流体シール装置を提供す
ることを目的とする。The present invention has been made based on the above-mentioned problems, and an object of the present invention is to provide a magnetic fluid sealing device with good assembly and sealing properties.
本発明の目的は、磁性流体に磁力を与える磁石体を着磁
された変形自在な磁石体で構成し、この磁石体とこれを
取付ける条溝との間に、２次シール体を設けることによ
り達成される。An object of the present invention is to construct a magnet body that applies magnetic force to a magnetic fluid by a magnetized deformable magnet body, and to provide a secondary seal body between this magnet body and a groove in which it is attached. achieved.
磁性流体シール装置の組立に際し、磁石体は変形自在な
磁石体であるので、この磁石体の変形により組付けが容
易である。When assembling the magnetic fluid sealing device, since the magnet is a deformable magnet, assembly is facilitated by deforming the magnet.
また、磁石体とその取付部材とのすき間に、２次シール
体を設けたので、このすき間を通過する微細塵埃を密封
できるため、密封性能を向上することができる。In addition, since the secondary seal body is provided in the gap between the magnet body and its mounting member, fine dust passing through this gap can be sealed, so that sealing performance can be improved.
以下、本発明の実施例を図面を用いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は１本発明の装置の一実施例を示すもので、この
図において１は一方の部材、２は他方の部材、：３は一
方の部材ｌに設けた条溝、４は変形自在な磁石体で、こ
の磁石体４はプラスチック、ゴム等の変形可能な部材内
に、鉄半分が入れ込まれており、Ｎ極と５ｔｆ４とに着
磁され、点線で示すように磁束が通過している。５は磁
石体４と、他方の部材２との間のすき間６に介在した磁
性流体である。７は磁石体４と一方の部材１の条溝３と
の間に設けた２次シールである。Fig. 1 shows an embodiment of the device of the present invention, in which 1 is one member, 2 is the other member, 3 is a groove provided in one member l, 4 is deformable. This magnet body 4 has half an iron half inserted into a deformable member such as plastic or rubber, and is magnetized to the N pole and 5TF4, and the magnetic flux passes through it as shown by the dotted line. ing. 5 is a magnetic fluid interposed in the gap 6 between the magnet body 4 and the other member 2. 7 is a secondary seal provided between the magnet body 4 and the groove 3 of one member 1.
このように構成したことにより、磁石体４の組付性が向
ヒすると共に密封性を高めることができる。With this configuration, the ease of assembling the magnet body 4 can be improved, and the sealing performance can be improved.
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２次シール体として、磁石体４と回転軸である
他方の部材２との間と同様に、磁石体４と一方の部材１
の条溝３との間に磁性流体５Ａを注入し、該磁性流体５
Ａが磁石体４に吸着される力を利用して間隙を密封する
ものである。FIG. 2 shows another embodiment of the device of the present invention. In this embodiment, as a secondary seal, the magnet body 4 and one member 1
A magnetic fluid 5A is injected between the groove 3 and the magnetic fluid 5.
A is used to seal the gap by utilizing the force of being attracted to the magnet body 4.
この実施例によれば、２次シールを構成するために、特
に構造変更する必要がなく、簡便な塵埃を完全密封でき
る磁性流体シールを実現でき、微細な塵埃を完全に封す
ることができる。According to this embodiment, it is not necessary to particularly change the structure in order to configure the secondary seal, and it is possible to realize a simple magnetic fluid seal that can completely seal off dust, and it is possible to completely seal off fine dust.
第３図は１本発明の装置のさらに他の実施例を示すもの
で、この実施例は磁石体４と一方の部材１とのすき間を
密封する２次シールとして、磁石体４として弾性変形す
るゴム磁石等を用い、この磁石体４を一方の部材１の条
溝３内に圧着封止させたものである。FIG. 3 shows still another embodiment of the device of the present invention, in which the magnet body 4 is elastically deformed as a secondary seal to seal the gap between the magnet body 4 and one member 1. This magnet body 4 is crimped and sealed within the groove 3 of one member 1 using a rubber magnet or the like.
この実施例によれば、磁石体４を安定に固定でき、かつ
構造の簡囃な完全封止磁性流体シールを実現することが
できる。According to this embodiment, it is possible to stably fix the magnet body 4 and realize a completely sealed magnetic fluid seal having a simple structure.
第４図は本発明の装置の他の実施例を示すもので、磁石
体４に弾性変形する１つまたは複数の突起部８を設け、
これを一方の部材１１の条溝３に圧入し、弾性変形する
突起部８と条溝３とで２次シールを形成したものである
。FIG. 4 shows another embodiment of the device of the present invention, in which the magnet body 4 is provided with one or more projections 8 that are elastically deformed,
This is press-fitted into the groove 3 of one member 11, and a secondary seal is formed between the elastically deformable protrusion 8 and the groove 3.
この実施例によっても、磁石体４を安定して固定できる
完全封止型磁性流体シールを実現できる。This embodiment also makes it possible to realize a completely sealed magnetic fluid seal that can stably fix the magnet body 4.
第５図は本発明の装置のさらに他の実施例を示すもので
、この実施例は磁石体４の磁束が貫通する面に、ゴム等
の弾性体９を接合し、この磁石体４を、一方の部材１の
溝３に圧入したものである。FIG. 5 shows still another embodiment of the device of the present invention. In this embodiment, an elastic body 9 such as rubber is bonded to the surface of the magnet 4 through which the magnetic flux passes, and the magnet 4 is It is press-fitted into the groove 3 of one member 1.
これによっても２磁石体４と一方の部材１との間に２次
シールを有した完全密封層磁性流体シールを実現できる
。また、弾性体９の断面形状を長方形にすれば、磁石体
４を溝内に方向を安定させて固定できる。This also makes it possible to realize a completely sealed layer magnetic fluid seal having a secondary seal between the two magnet bodies 4 and one member 1. Moreover, if the cross-sectional shape of the elastic body 9 is made rectangular, the magnet body 4 can be fixed in the groove with a stable direction.
第６図は、本発明の装置の他の実施例を示すもので、こ
の実施例は磁石体４とは別体の弾性体１０を磁石体４と
条溝３の側面との間に圧入したものである。これによっ
ても、２次シールを実現でき、微ｉｕｔ埃を完全に封止
できる磁性流体シールを成し得る。FIG. 6 shows another embodiment of the device of the present invention, in which an elastic body 10 separate from the magnet body 4 is press-fitted between the magnet body 4 and the side surface of the groove 3. It is something. This also makes it possible to achieve a secondary seal, and to achieve a magnetic fluid seal that can completely seal out minute dust.
第７図は、本発明のさらに他の実施例を示すもので、こ
の実施例は第６図に示した実施例において、弾性体１１
を条Ｗ！３の底面と磁石体４との間に配置したものであ
り、これによっても完全密封形磁性流体シールを実現で
きるだけでなく、軸の回転振動が大きい壜台に１弾性体
１１が振動に追随して変形するため、軸振動に強い磁性
流体シールを実現できる。FIG. 7 shows still another embodiment of the present invention, which is the same as the elastic body 11 in the embodiment shown in FIG.
Article W! This arrangement not only realizes a completely sealed magnetic fluid seal, but also allows the elastic body 11 to follow the vibrations of the bottle base, where the rotational vibration of the shaft is large. This allows the realization of a magnetic fluid seal that is resistant to shaft vibration.
第８図は本発明の他の実施例を示すもので、この実施例
は磁石体４と一方の部材１の条溝３との間に、例えばシ
リコン系接着剤のような接着剤シール剤１２を注入した
ものであり、これによっても２次シールを実現でき、完
全封止形磁性流体シールを実現できる。FIG. 8 shows another embodiment of the present invention, in which an adhesive sealant 12, such as a silicon adhesive, for example, is used between the magnet body 4 and the groove 3 of one member 1. This also makes it possible to achieve a secondary seal and a completely sealed magnetic fluid seal.
本発明によれば、磁石体として変形自在な磁石体を用い
たので、その組付性が良好であり、さらに２次シールに
より密封性能も高めろことができ机
４、Ｍ而の簡噴な説明
第１１閾〜第ｉ３図はそれぞれ本発明の装り°イの実施
例を示す断面図である。According to the present invention, since a deformable magnet body is used as the magnet body, its assemblability is good, and the sealing performance can also be improved by the secondary seal. Explanation: Figures 11 to 3 are cross-sectional views showing embodiments of the present invention.
ｌ・・・一方の部材、２・・・他方の部材、；３・・・
条溝、４・・・磁石体、５・・・磁性流体、７・・・２
次シール、８・・・寸 堵 Ｎ
オ ３ ｍ
Ｋ′ ＋ 凶
オ ５色
７１ オフ巴
１−ｍ−夕隼 １１ 惨l...one member, 2...other member,;3...
groove, 4... magnet body, 5... magnetic fluid, 7... 2
Next seal, 8...Sun To N O 3 m K' + Kyou O 5 colors 71 Off Tomoe 1-m-Yuhayabusa 11 Misery
Claims (1)
部材に設けた磁石体の磁力により磁性流体を保持する磁
性流体シール装置において、前記磁石体を、着磁された
変形自在なる磁石体で構成し、この磁石体を一方の部材
の条溝に挿入し、この条溝と磁石体との間に２次シール
体を設けたことを特徴とする磁性流体シール装置。 ２、特許請求の範囲第１項記載の磁性流体シール装置お
いて、２次シール機体は条溝の幅より大きな径を有する
磁石体で構成されこの磁石体を条溝に圧着させたことを
特徴とする磁性流体シール装置。 ３、特許請求の範囲第１項記載の磁性流体シール装置に
おいて、２次シール体は、磁石材に設けた弾性変形可能
な突起部で構成され、この突起部を条溝に圧着させたこ
とを特徴とする磁性流体シール装置。 ４、特許請求の範囲第１項記載の磁性流体シール装置に
おいて、２次シール体は磁石体に接合した弾性体で構成
され、この弾性体を条溝に圧着させたことを特徴とする
磁性流体シール装置。 ５、特許請求の範囲第１項記載の磁性流体シール装置に
おいて、２次シール体は、磁石体と条溝との間に圧入し
た弾性体であることを特徴とする磁性流体シール装置。 ６、特許請求の範囲第１項記載の磁性流体シール装置に
おいて、２次シール体は、磁石体と条溝との間に注入し
た接着剤であることを特徴とする磁性流体シール装置。[Scope of Claims] 1. A magnetic fluid sealing device that holds a magnetic fluid in a gap formed by two members by the magnetic force of a magnet provided on one of the members, wherein the magnet is magnetized. 1. A magnetic fluid sealing device comprising a deformable magnet body, the magnet body being inserted into a groove in one member, and a secondary sealing body being provided between the groove and the magnet body. 2. The magnetic fluid sealing device according to claim 1, characterized in that the secondary seal body is composed of a magnet body having a diameter larger than the width of the groove, and this magnet body is crimped onto the groove. Magnetic fluid seal device. 3. In the magnetic fluid sealing device according to claim 1, the secondary sealing body is constituted by an elastically deformable protrusion provided on the magnet material, and the protrusion is crimped into the groove. Features of magnetic fluid seal device. 4. In the magnetic fluid sealing device according to claim 1, the secondary sealing body is composed of an elastic body bonded to a magnet body, and the magnetic fluid is characterized in that the elastic body is pressed into the groove. sealing device. 5. The magnetic fluid sealing device according to claim 1, wherein the secondary sealing body is an elastic body press-fitted between the magnet body and the groove. 6. The magnetic fluid sealing device according to claim 1, wherein the secondary sealing body is an adhesive injected between the magnet body and the groove.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61100945A JPS62258268A (en) | 1986-05-02 | 1986-05-02 | Magnetic fluid sealing device |
| DE8686109634T DE3671790D1 (en) | 1985-07-24 | 1986-07-14 | SEALING DEVICE WITH MAGNETIC LIQUID. |
| EP86109634A EP0210527B1 (en) | 1985-07-24 | 1986-07-14 | Magnetic liquid seal |
| US06/886,813 US4708350A (en) | 1985-07-24 | 1986-07-18 | Magnetic liquid seal with magnetized deformable magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61100945A JPS62258268A (en) | 1986-05-02 | 1986-05-02 | Magnetic fluid sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62258268A true JPS62258268A (en) | 1987-11-10 |
Family
ID=14287489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61100945A Pending JPS62258268A (en) | 1985-07-24 | 1986-05-02 | Magnetic fluid sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62258268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065443A (en) * | 2001-08-29 | 2003-03-05 | Nok Corp | Sealing device |
-
1986
- 1986-05-02 JP JP61100945A patent/JPS62258268A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065443A (en) * | 2001-08-29 | 2003-03-05 | Nok Corp | Sealing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR930011016A (en) | Bite | |
| AU8573991A (en) | Fastener means | |
| US4708350A (en) | Magnetic liquid seal with magnetized deformable magnet | |
| KR100866696B1 (en) | Magnetic fluid seal device | |
| KR870005619A (en) | Magnetic Earth | |
| JPS62258268A (en) | Magnetic fluid sealing device | |
| US5826883A (en) | Sealing ring with deformable tubular sheath filled with permanent magnetic granules and method of making the same | |
| JPH11153404A (en) | Rotation angle sensor | |
| JPS6224078A (en) | Magnetic-fluid sealing device | |
| JP2556536B2 (en) | Shaft seal device using magnetic fluid | |
| JPS586063A (en) | Magnetically shielding device | |
| JPS61283791A (en) | Pump rotator | |
| JPH0587187A (en) | Magnetic damper device | |
| JP2597618Y2 (en) | Magnetic fluid sealing device | |
| JPH0241846Y2 (en) | ||
| JPS63285369A (en) | Sealing device utilizing magnetic fluid | |
| JPS6290987A (en) | Magnetic sensor | |
| JPH0614633U (en) | Magnetic fluid seal device | |
| JPS60172775A (en) | Seal device for rotary shaft, utilizing magnetic fluid | |
| JPH0234621Y2 (en) | ||
| JPH01158272A (en) | Shaft sealing device employing magnetic fluid | |
| JPS59123754U (en) | Bearing sealed structure | |
| JPH06208064A (en) | Mechanical optical switch | |
| JPH01126474A (en) | Magnetic fluid seal | |
| JPH06111696A (en) | Reed switch opening/closing device |