JPH01156315U - - Google Patents
Info
- Publication number
- JPH01156315U JPH01156315U JP5334788U JP5334788U JPH01156315U JP H01156315 U JPH01156315 U JP H01156315U JP 5334788 U JP5334788 U JP 5334788U JP 5334788 U JP5334788 U JP 5334788U JP H01156315 U JPH01156315 U JP H01156315U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- preload member
- fluid seal
- magnet
- stepped
- 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 claims description 7
- 230000036316 preload Effects 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000005415 magnetization Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
第１図は本考案の第１の実施例の磁性流体シー
ルの使用をしたモータ用ボールベアリングの断面
矢視図、第２図は本考案の第２の実施例の磁性流
体シールを使用したボールベアリングの断面矢視
図、第３図及び第４図は従来例を表わす断面矢視
図である。
１…ボールベアリング、２…マグネツト、３…
ポールピース、４…ボールベアリング外輪、５…
ボールベアリング内輪、６…ギヤツプ（磁性流体
封入部）、７…磁性流体、８…ボール、９…シー
ル板、１０…リテーナ、１１…シヤフト、１２…
Ｇリング、１３…ヨーク（予圧部材）、１４…ハ
ブ、１５…ブツシング（予圧部材）、１６…スプ
リング。
Figure 1 is a cross-sectional view of a ball bearing for a motor using the magnetic fluid seal of the first embodiment of the present invention, and Figure 2 is a ball bearing using the magnetic fluid seal of the second embodiment of the present invention. A cross-sectional view of the bearing, FIGS. 3 and 4 are cross-sectional views showing a conventional example. 1...Ball bearing, 2...Magnet, 3...
Pole piece, 4...Ball bearing outer ring, 5...
Ball bearing inner ring, 6... Gap (magnetic fluid sealed part), 7... Magnetic fluid, 8... Ball, 9... Seal plate, 10... Retainer, 11... Shaft, 12...
G ring, 13...Yoke (preload member), 14...Hub, 15...Butching (preload member), 16...Spring.
Claims (1)
体シールであつて、ボールベアリング周壁の一方
を段付きにし、この段付き部分に前記モータのシ
ヤフトの長手方向に着磁されたマグネツトを挿入
し、このマグネツトの着磁方向対向部に予圧部材
を設け、このマグネツトと磁性体より成る予圧部
材の間に磁性流体を封入したことを特徴とする磁
性流体シール。 A magnetic fluid seal used in motor ball bearings.One side of the ball bearing peripheral wall is stepped, and a magnet magnetized in the longitudinal direction of the motor shaft is inserted into the stepped part. A magnetic fluid seal characterized in that a preload member is provided at a portion facing the direction of magnetization, and a magnetic fluid is sealed between the magnet and the preload member made of a magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5334788U JPH01156315U (en) | 1988-04-20 | 1988-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5334788U JPH01156315U (en) | 1988-04-20 | 1988-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01156315U true JPH01156315U (en) | 1989-10-27 |
Family
ID=31279330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5334788U Pending JPH01156315U (en) | 1988-04-20 | 1988-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01156315U (en) |
-
1988
- 1988-04-20 JP JP5334788U patent/JPH01156315U/ja active Pending