JPH0192560U - - Google Patents

Info

Publication number
JPH0192560U
JPH0192560U JP18896387U JP18896387U JPH0192560U JP H0192560 U JPH0192560 U JP H0192560U JP 18896387 U JP18896387 U JP 18896387U JP 18896387 U JP18896387 U JP 18896387U JP H0192560 U JPH0192560 U JP H0192560U
Authority
JP
Japan
Prior art keywords
magnetic fluid
retaining member
sealing device
fluid retaining
model registration
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
JP18896387U
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 JP18896387U priority Critical patent/JPH0192560U/ja
Publication of JPH0192560U publication Critical patent/JPH0192560U/ja
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
    • F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7846—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with a gap between the annular disc and the inner race

Description

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

第１図は本考案の第１実施例にかかり、密封装
置を装着した玉軸受の上半部を示す一部省略の縦
断面図である。第２図ないし第６図は本考案の第
２〜第６実施例にかかり、第２図および第６図は
第１図に対応する図、第３図ないし第５図は密封
装置の要部を拡大した縦断面図を示している。ま
た、第７図は従来例にかかり、第１図に対応した
図を示している。 ２１…内輪（内側部材）、２２…外輪（外側部
材）、３０…シールリング、３１…芯金、４０…
磁性流体保持部材、４１…環状磁石、４２，４３
…ポールピース、５０…磁性流体。 FIG. 1 is a partially omitted vertical sectional view showing the upper half of a ball bearing equipped with a sealing device according to a first embodiment of the present invention. 2 to 6 show the second to sixth embodiments of the present invention, FIGS. 2 and 6 correspond to FIG. 1, and FIGS. 3 to 5 show the main parts of the sealing device. An enlarged vertical cross-sectional view is shown. Further, FIG. 7 shows a conventional example and corresponds to FIG. 1. 21... Inner ring (inner member), 22... Outer ring (outer member), 30... Seal ring, 31... Core metal, 40...
Magnetic fluid holding member, 41... annular magnet, 42, 43
...Pole piece, 50...Magnetic fluid.

Claims (1)

【実用新案登録請求の範囲】 (1) 同軸状に配された内外二つの部材間に装着
され、かつ内側部材を固定、外側部材を回転させ
る使用形態を前提とした密封装置において、 前記内側部材の外周面肩部に形成の周段部に固
着された磁性流体保持部材と、 前記外側部材に固着されて前記内側部材側に延
出され、前記磁性流体保持部材との間に微小のシ
ール隙間を形成する磁性材製のシールリングと、 前記磁性流体保持部材と前記シールリングとの
間の対向部分に形成される磁気回路の磁気力によ
り前記シール隙間に保持された磁性流体と、 を備えていることを特徴とする密封装置。 (2) 前記シールリングが前記磁性流体保持部材
の外周面に径方向で対向して前記シール隙間を形
成する円筒フランジを備えたものである、実用新
案登録請求の範囲第(1)項に記載の密封装置。 (3) 前記シールリングが前記磁性流体保持部材
の側面に軸方向で対向して前記シール隙間を形成
する径方向中心向きの延出部分を備えたものであ
る、実用新案登録請求の範囲第(1)項に記載の密
封装置。[Claims for Utility Model Registration] (1) A sealing device installed between two coaxially arranged inner and outer members, and intended for use in which the inner member is fixed and the outer member is rotated: A minute sealing gap is formed between the magnetic fluid retaining member fixed to the peripheral step formed on the outer circumferential shoulder of the magnetic fluid retaining member and the magnetic fluid retaining member fixed to the outer member and extending toward the inner member. and a magnetic fluid held in the seal gap by the magnetic force of a magnetic circuit formed in an opposing portion between the magnetic fluid holding member and the seal ring. A sealing device characterized by: (2) The seal ring is provided with a cylindrical flange radially opposed to the outer circumferential surface of the magnetic fluid retaining member to form the seal gap, as set forth in claim (1) of the utility model registration claim. sealing device. (3) Utility model registration claim No. 1, wherein the seal ring is provided with an extending portion facing the center in the radial direction and axially facing the side surface of the magnetic fluid retaining member to form the seal gap. Sealing device as described in paragraph 1).
JP18896387U 1987-12-11 1987-12-11 Pending JPH0192560U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18896387U JPH0192560U (en) 1987-12-11 1987-12-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18896387U JPH0192560U (en) 1987-12-11 1987-12-11

Publications (1)

Publication Number Publication Date
JPH0192560U true JPH0192560U (en) 1989-06-16

Family

ID=31480024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18896387U Pending JPH0192560U (en) 1987-12-11 1987-12-11

Country Status (1)

Country Link
JP (1) JPH0192560U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5712167A (en) * 1980-06-23 1982-01-22 Nippon Seiko Kk Magnetic fluid sealing device
JPS6232266B2 (en) * 1984-09-21 1987-07-14 Nippon Boshoku Kogyo Kk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5712167A (en) * 1980-06-23 1982-01-22 Nippon Seiko Kk Magnetic fluid sealing device
JPS6232266B2 (en) * 1984-09-21 1987-07-14 Nippon Boshoku Kogyo Kk

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