JPH0285074U - - Google Patents

Info

Publication number
JPH0285074U
JPH0285074U JP16526588U JP16526588U JPH0285074U JP H0285074 U JPH0285074 U JP H0285074U JP 16526588 U JP16526588 U JP 16526588U JP 16526588 U JP16526588 U JP 16526588U JP H0285074 U JPH0285074 U JP H0285074U
Authority
JP
Japan
Prior art keywords
reciprocating shaft
seal
casing
reciprocating
rows
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
JP16526588U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP16526588U priority Critical patent/JPH0285074U/ja
Publication of JPH0285074U publication Critical patent/JPH0285074U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Description

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

第１図はこの考案の一実施例を示す往復運動用
シールの構成図、第２図はこの考案の従来例を示
す磁気シールの構成図、第３図はこの考案の他の
従来例を示すシールの構成図である。 ２０……ケーシング、２１……貫通孔、２２…
…往復運動シヤフト、２３……往復運動シヤフト
用シール、２５ａ，２５ｂ，２８……磁石、２６
……磁性流体。 Fig. 1 is a block diagram of a reciprocating seal showing an embodiment of this invention, Fig. 2 is a block diagram of a magnetic seal showing a conventional example of this invention, and Fig. 3 shows another conventional example of this invention. It is a block diagram of a seal. 20...Casing, 21...Through hole, 22...
...Reciprocating shaft, 23... Seal for reciprocating shaft, 25a, 25b, 28... Magnet, 26
...Magnetic fluid.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 装置の外形を形成するケーシングに設けられた
貫通孔と、前記ケーシング内から前記貫通孔を通
つて外部に延びる往復運動シヤフトとの間に設け
られた往復運動シヤフト用シールであつて、前記
貫通孔の内面に設けられた少なくとも３列の環状
の磁石と、これら３列の磁石のうちケーシング内
寄りの２列の磁石と前記往復運動シヤフトとの間
に充填された磁性流体とを備えてなることを特徴
とする往復運動シヤフト用シール。 A seal for a reciprocating shaft provided between a through hole provided in a casing forming the outer shape of the device and a reciprocating shaft extending from within the casing to the outside through the through hole, the reciprocating shaft seal comprising: a reciprocating shaft; at least three rows of annular magnets provided on the inner surface of the magnet, and a magnetic fluid filled between the two rows of magnets closer to the inside of the casing and the reciprocating shaft. A seal for reciprocating shafts featuring:
JP16526588U 1988-12-21 1988-12-21 Pending JPH0285074U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16526588U JPH0285074U (en) 1988-12-21 1988-12-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16526588U JPH0285074U (en) 1988-12-21 1988-12-21

Publications (1)

Publication Number Publication Date
JPH0285074U true JPH0285074U (en) 1990-07-03

Family

ID=31451593

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16526588U Pending JPH0285074U (en) 1988-12-21 1988-12-21

Country Status (1)

Country Link
JP (1) JPH0285074U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031385A1 (en) * 2000-10-12 2002-04-18 Nok Corporation Magnetic fluid seal device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163870A (en) * 1982-03-23 1983-09-28 Nippon Telegr & Teleph Corp <Ntt> Vacuum seal mechanism
JPS61266875A (en) * 1985-05-20 1986-11-26 Nec Corp Magnetic fluid seal structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163870A (en) * 1982-03-23 1983-09-28 Nippon Telegr & Teleph Corp <Ntt> Vacuum seal mechanism
JPS61266875A (en) * 1985-05-20 1986-11-26 Nec Corp Magnetic fluid seal structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031385A1 (en) * 2000-10-12 2002-04-18 Nok Corporation Magnetic fluid seal device

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