JPS6111537Y2 - - Google Patents
Info
- Publication number
- JPS6111537Y2 JPS6111537Y2 JP12143581U JP12143581U JPS6111537Y2 JP S6111537 Y2 JPS6111537 Y2 JP S6111537Y2 JP 12143581 U JP12143581 U JP 12143581U JP 12143581 U JP12143581 U JP 12143581U JP S6111537 Y2 JPS6111537 Y2 JP S6111537Y2
- Authority
- JP
- Japan
- Prior art keywords
- spheres
- receiving member
- thrust bearing
- bearing
- sphere
- 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.)
- Expired
Links
- 239000000696 magnetic material Substances 0.000 claims description 4
- 239000000314 lubricant Substances 0.000 description 3
- 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
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000004519 grease Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 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
- F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
-
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/20—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with emergency supports or bearings
-
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/045—Sliding-contact bearings for exclusively rotary movement for axial load only with grooves in the bearing surface to generate hydrodynamic pressure, e.g. spiral groove thrust bearings
-
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Description
【考案の詳細な説明】
本考案は軸を、軸端もしくは受部材の軸受面に
動圧発生用の溝を設けて、支承する動圧形スラス
ト軸受に関するものである。[Detailed Description of the Invention] The present invention relates to a dynamic pressure type thrust bearing in which a shaft is supported by providing a groove for generating dynamic pressure in the shaft end or the bearing surface of a receiving member.
従来、平面図の動圧発生用溝付きスラスト軸受
の欠点として、起動時に軸受面同志が互に接触す
ることから起動トルクが大きいこと、また起動・
停止時の如く低速回転時に接触による軸受面の摩
耗が生ずること等があり、その応用範囲が限られ
ていた。そこで第１図に示すように受部材１ａの
軸受面のほぼ中央に設ける穴に球体２２ａを軸受
面からわずかに突出させるように圧入固定し、静
止時及び低速回転時には球体により軸を点接触支
持し、正規回転時には流体潤滑膜により軸を支持
する球体付き動圧形スラスト軸受がある。しかし
ながら、このような軸受においても、起動時はす
べり接触であるため起動トルクが大きく、さらに
は静止時にスラスト荷重が大きい場合に球体１個
で点接触支持するため球体に塑性変形が生じ、起
動・停止の繰り返しによつて、球体に摩耗が生じ
る欠点がある。 Conventionally, the drawbacks of thrust bearings with grooves for generating dynamic pressure in plan view are that the starting torque is large because the bearing surfaces come into contact with each other during starting, and that the starting torque is large.
The bearing surface may wear out due to contact during low-speed rotation such as when stopped, and its range of application has been limited. Therefore, as shown in Fig. 1, a sphere 22a is press-fitted into a hole provided at approximately the center of the bearing surface of the receiving member 1a so as to slightly protrude from the bearing surface, and the sphere supports the shaft in point contact when it is stationary or rotating at low speed. However, there are hydrodynamic thrust bearings with spheres that support the shaft with a fluid lubrication film during normal rotation. However, even in such a bearing, the starting torque is large due to the sliding contact at the time of starting, and furthermore, when the thrust load is large when the bearing is stationary, plastic deformation occurs in the sphere because it is supported by point contact with one sphere, which causes a problem in starting and The drawback is that the sphere wears out due to repeated stops.
本考案は前記欠点を改良したもので、受部材の
外周に受部材の軸受面よりわずかに突出する球体
を配設し、静止時及び低速回転時には球体の転が
り接触によつて軸のスラスト荷重を支承し、正規
回転時には動圧発生用の溝によつて生ずる流体潤
滑膜によつて支承し、しかも受部材と球体が磁性
体からなり、かつ永久磁石により非磁性体の支持
部材に吸引保持されて、軸受組込み時に球体が簡
単にこぼれ落ちないようになつている。 The present invention improves the above-mentioned drawbacks by disposing a sphere on the outer periphery of the receiving member that slightly protrudes from the bearing surface of the receiving member, and when it is stationary or rotating at low speed, the thrust load of the shaft is reduced by the rolling contact of the sphere. During normal rotation, the ball is supported by a fluid lubricant film produced by a groove for generating dynamic pressure.Moreover, the receiving member and the sphere are made of a magnetic material, and are attracted and held by a permanent magnet to the non-magnetic supporting member. This prevents the sphere from easily falling out when the bearing is installed.
次に第２図及び第３図に示す本考案の実施例つ
いて説明する。符号１は受部材、２１，２２は複
数個の球体、３は支持部材、４は永久磁石であ
る。受部材１は円盤状で、軸受面１１に動圧発生
用の溝１２が設けられ、かつ外周部には球体２
１，２２を保持する周段部１３が設けられてい
る。支持部材３は断面が凹形状に形成されてい
て、受部材１は支持部材３の空所に嵌合されてい
る。支持部材３の堰堤部３１の高さは、嵌合され
た受部材１の軸受面１１よりも高くなつている。
受部材１の周段部１３と支持部材３の内面３３と
で囲み形成される周溝５に複数の直径の大きい荷
重球体２１と直径の小さいスペーサ用球体２２と
が周上に交互に、しかも荷重用球体２１が軸受面
１１よりわずかに突出し、静止時及び低速回転時
に対向する軸６の端面６１に接するように配設さ
れている。そして、受部材１と球体２１，２２は
磁性体から、支持部材３は非磁性体からなり、支
持部材３の外底部に設ける窪部３２に永久磁石４
が接着剤等にて固着されていて、受部材１と球体
２１，２２が支持部材３を介して永久磁石４によ
り吸引保持されている。なお、永久磁石４を接着
剤を用いずに受部材１との互にの吸引力で保持し
ても良い。 Next, an embodiment of the present invention shown in FIGS. 2 and 3 will be described. Reference numeral 1 indicates a receiving member, 21 and 22 a plurality of spheres, 3 a support member, and 4 a permanent magnet. The receiving member 1 is disc-shaped, and a bearing surface 11 is provided with a groove 12 for generating dynamic pressure, and a sphere 2 is provided on the outer periphery.
A circumferential step portion 13 for holding the parts 1 and 22 is provided. The support member 3 has a concave cross section, and the receiving member 1 is fitted into a cavity of the support member 3. The height of the dam part 31 of the support member 3 is higher than the bearing surface 11 of the fitted receiving member 1.
A plurality of load spheres 21 with a large diameter and spacer spheres 22 with a small diameter are arranged alternately on the circumference in a circumferential groove 5 formed by surrounding the circumferential step part 13 of the receiving member 1 and the inner surface 33 of the support member 3. The loading sphere 21 slightly protrudes from the bearing surface 11 and is disposed so as to be in contact with the opposing end surface 61 of the shaft 6 when at rest and when rotating at low speed. The receiving member 1 and the spheres 21 and 22 are made of a magnetic material, and the supporting member 3 is made of a non-magnetic material.
are fixed with adhesive or the like, and the receiving member 1 and the spheres 21 and 22 are attracted and held by the permanent magnet 4 via the supporting member 3. Note that the permanent magnet 4 may be held by mutual attraction with the receiving member 1 without using an adhesive.
本考案の動圧形スラスト軸受は、上述の如く、
静止時及び低速回転時には複数個の球体でスラス
ト荷重を受けるので、大きなスラスト荷重でも球
体は塑性変形せず、さらには転がり接触であるた
め摩耗がない。また、支持部材に配置する永久磁
石が球体及び受部材を吸引保持しているので軸受
の組込みまたは分解時の取扱いで簡単にバレずに
取扱いが容易である。また、支持部材を断面凹形
状とし堰堤部を設けているので球体が回転中に遠
心力で外側に飛びだすことなく、さらに堰堤部の
高さが軸受面よりも高くなつているので、回転中
に油やグリース等の潤滑剤が飛散せず、軸受すき
ま内への潤滑剤の流入を容易にする効果がある。
さらにまた、荷重支持用球体とスペーサ用球体が
周上に交互に配設されているので、回転中に球体
同志が互いにせり合うことがない効果を有してい
る。 As mentioned above, the hydrodynamic thrust bearing of the present invention has the following features:
When the ball is stationary or rotates at low speed, a plurality of spheres receive a thrust load, so the spheres do not undergo plastic deformation even with a large thrust load, and furthermore, because they are in rolling contact, there is no wear. Furthermore, since the permanent magnets disposed on the support member attract and hold the sphere and the receiving member, the bearing can be easily handled without breaking during assembly or disassembly. In addition, since the support member has a concave cross-section and is provided with a dam, the sphere will not fly outward due to centrifugal force during rotation.Furthermore, the height of the dam is higher than the bearing surface, so during rotation, This has the effect of preventing lubricants such as oil and grease from scattering and making it easier for the lubricants to flow into the bearing clearance.
Furthermore, since the load-supporting spheres and the spacer spheres are arranged alternately on the circumference, there is an effect that the spheres do not come into contact with each other during rotation.
なお、本考案の動圧形スラスト軸受は軸回転も
しくは軸受回転のいずれか、または相対回転でも
用いることができる。さらには、縦形または横形
のいずれでも用いることができる。 Note that the hydrodynamic thrust bearing of the present invention can be used for either shaft rotation, bearing rotation, or relative rotation. Furthermore, it can be used either vertically or horizontally.
第１図は従来の動圧形スラスト軸受の部分断面
図。第２図は本考案の動圧形スラスト軸受の縦断
面図。第３図は第２図における動圧形スラスト軸
受の平面図。符号１は受部材、２１，２２は球
体、３は支持部材、４は永久磁石である。
FIG. 1 is a partial sectional view of a conventional dynamic pressure type thrust bearing. FIG. 2 is a longitudinal sectional view of the hydrodynamic thrust bearing of the present invention. FIG. 3 is a plan view of the dynamic pressure type thrust bearing in FIG. 2. Reference numeral 1 is a receiving member, 21 and 22 are spheres, 3 is a supporting member, and 4 is a permanent magnet.
Claims (1)
受部材の外周に、前記受部材の軸受面よりわず
かに突出するように配設される複数個の球体が
静止時ないし低速回転時に軸を支承し、かつ前
記受部材と球体が磁性体からなり、非磁性体の
支持部材を介して永久磁石により吸引保持され
てなることを特徴とする動圧形スラスト軸受。 (2) 支持部材が断面凹形状に形成されてなる実用
新案登録請求の範囲第１項記載の動圧形スラス
ト軸受。 (3) 支持部材の堰堤部の高さが受部材の軸受面よ
りも高く形成されてなる実用新案登録請求の範
囲第２項の動圧形スラスト軸受。 (4) 球体が複数の直径の大きい荷重支持用球体と
複数の直径の小さいスペース用球体とからな
り、しかも両球体が周上に交互に配設されてな
る実用新案登録請求の範囲第１項の動圧形スラ
スト軸受。[Scope of claims for utility model registration] (1) In a hydrodynamic thrust bearing that supports a shaft,
A plurality of spheres disposed on the outer periphery of the receiving member so as to slightly protrude from the bearing surface of the receiving member support the shaft when stationary or rotating at low speed, and the receiving member and the spheres are made of a magnetic material. A dynamic pressure type thrust bearing, characterized in that it is attracted and held by a permanent magnet via a non-magnetic support member. (2) A hydrodynamic thrust bearing according to claim 1, wherein the support member has a concave cross section. (3) The hydrodynamic thrust bearing according to claim 2 of the utility model registration claim, wherein the height of the dam part of the supporting member is higher than the bearing surface of the receiving member. (4) Utility model registration claim Paragraph 1, in which the sphere consists of a plurality of large-diameter load-supporting spheres and a plurality of small-diameter space-use spheres, and both spheres are arranged alternately on the circumference. Dynamic thrust bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12143581U JPS5828129U (en) | 1981-08-18 | 1981-08-18 | Dynamic thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12143581U JPS5828129U (en) | 1981-08-18 | 1981-08-18 | Dynamic thrust bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5828129U JPS5828129U (en) | 1983-02-23 |
| JPS6111537Y2 true JPS6111537Y2 (en) | 1986-04-11 |
Family
ID=29915370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12143581U Granted JPS5828129U (en) | 1981-08-18 | 1981-08-18 | Dynamic thrust bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5828129U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626689A (en) * | 2016-03-12 | 2016-06-01 | 秦国亮 | Magnetic bearing holder |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62196878U (en) * | 1986-06-05 | 1987-12-15 | ||
| JP4235734B2 (en) * | 2005-03-24 | 2009-03-11 | 国立大学法人鳥取大学 | Hybrid type linear motion guide device |
| JP6435746B2 (en) * | 2014-09-24 | 2018-12-12 | 株式会社デンソー | Thrust receiving structure and motor |
-
1981
- 1981-08-18 JP JP12143581U patent/JPS5828129U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626689A (en) * | 2016-03-12 | 2016-06-01 | 秦国亮 | Magnetic bearing holder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5828129U (en) | 1983-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2605981Y2 (en) | Dynamic pressure bearing device | |
| US4701651A (en) | Motor unit | |
| JPH10238535A (en) | Spindle motor for disc | |
| JPH11210771A (en) | Double row bearing device | |
| JPS6111537Y2 (en) | ||
| US6181513B1 (en) | Spindle motor and a hard disk drive apparatus including such a motor | |
| JPS60121308A (en) | Dynamic pressure type composite bearing device | |
| JPS5921123U (en) | Thrust and radial ball bearing | |
| JPH033805B2 (en) | ||
| JP2003013976A (en) | Rolling bearing | |
| JPS6364647B2 (en) | ||
| JP2525012Y2 (en) | ball bearing | |
| JPS5817219A (en) | Dynamic-pressure radial bearing device | |
| JP2528846Y2 (en) | Spindle motor | |
| JPH0781585B2 (en) | Bearing device | |
| JPS63219912A (en) | Bearing equipment and manufacture thereof | |
| JPS6152414A (en) | Dynamic-pressure type fluid bearing unit | |
| JPH0610623U (en) | Magnetic fluid bearing | |
| JP2900560B2 (en) | Bearing device for magnetic disk | |
| JPS631053Y2 (en) | ||
| JPH04258522A (en) | Dynamic pressure bearing device | |
| JPS6319622Y2 (en) | ||
| JPS6350564B2 (en) | ||
| JPH09329138A (en) | Compound bearing and spindle motor | |
| JP2584634Y2 (en) | Hydrodynamic bearing |