JPH0378122U - - Google Patents
Info
- Publication number
- JPH0378122U JPH0378122U JP13974189U JP13974189U JPH0378122U JP H0378122 U JPH0378122 U JP H0378122U JP 13974189 U JP13974189 U JP 13974189U JP 13974189 U JP13974189 U JP 13974189U JP H0378122 U JPH0378122 U JP H0378122U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- ceramics
- rotating body
- bearing structure
- structure according
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 claims 7
- 239000000314 lubricant Substances 0.000 claims 1
- 230000003746 surface roughness Effects 0.000 claims 1
Landscapes
- Sliding-Contact Bearings (AREA)
Description
第１図はこの考案を具体化したポリゴンスキヤ
ナーモータの構成を示す断面図である。
２…支軸、３，４…スラスト軸受体、５…回転
体、６…ラジアル軸受孔、７…筒、Ｓ…間隙、１
２…空気導入溝。
FIG. 1 is a sectional view showing the configuration of a polygon scanner motor embodying this invention. 2... Support shaft, 3, 4... Thrust bearing body, 5... Rotating body, 6... Radial bearing hole, 7... Cylinder, S... Gap, 1
2...Air introduction groove.
Claims (1)
軸受体３，４によつて回転可能に支持され、かつ
、前記スラスト軸受体３，４あるいは回転体５の
いずれか一方に動圧発生用の溝１２を有する軸受
構造において、 前記回転体５のラジアル軸受体２に相対する孔
６にセラミツクスからなる筒７を回転体５のスラ
スト軸受面よりも突出させて装着したことを特徴
とする動圧軸受構造。 ２ 前記セラミツクスからなる筒７は、気孔率１
０〜３５％多孔質セラミツクスである請求項１記
載の動圧軸受構造。 ３ 前記セラミツクスからなる筒７は、気孔率１
０〜３５％多孔質セラミツクスに潤滑剤が含浸さ
れたものである請求項１記載の動圧軸受構造。 ４ 前記セラミツクスからなる筒７は、回転体の
スラスト軸受面よりも１〜２０μｍ突出させて装
着されてなるものである請求項１記載の動圧軸受
構造。 ５ 前記セラミツクスからなる筒は、スラスト軸
受体との接触面の平均面粗さが０．０１〜１μｍ
である請求項１記載の動圧軸受構造。[Claims for Utility Model Registration] 1. The rotating body 5 is rotatably supported by the radial bearing body 2 and the thrust bearing bodies 3, 4, and either the thrust bearing bodies 3, 4 or the rotating body 5 In a bearing structure having a groove 12 for generating dynamic pressure on one side, a cylinder 7 made of ceramics is installed in a hole 6 facing the radial bearing body 2 of the rotating body 5 so as to protrude beyond the thrust bearing surface of the rotating body 5. A hydrodynamic bearing structure characterized by: 2 The cylinder 7 made of ceramics has a porosity of 1
The hydrodynamic bearing structure according to claim 1, which is made of 0 to 35% porous ceramics. 3 The cylinder 7 made of ceramics has a porosity of 1
2. The hydrodynamic bearing structure according to claim 1, wherein the porous ceramic is impregnated with a lubricant at a rate of 0 to 35%. 4. The dynamic pressure bearing structure according to claim 1, wherein the cylinder 7 made of ceramic is mounted so as to protrude by 1 to 20 μm beyond the thrust bearing surface of the rotating body. 5 The cylinder made of ceramics has an average surface roughness of 0.01 to 1 μm on the contact surface with the thrust bearing body.
The hydrodynamic bearing structure according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989139741U JPH0752417Y2 (en) | 1989-11-30 | 1989-11-30 | Dynamic bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989139741U JPH0752417Y2 (en) | 1989-11-30 | 1989-11-30 | Dynamic bearing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0378122U true JPH0378122U (en) | 1991-08-07 |
| JPH0752417Y2 JPH0752417Y2 (en) | 1995-11-29 |
Family
ID=31686767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989139741U Expired - Fee Related JPH0752417Y2 (en) | 1989-11-30 | 1989-11-30 | Dynamic bearing structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752417Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919717A (en) * | 1982-07-23 | 1984-02-01 | Ngk Insulators Ltd | Heat resistant non-oil feeding structure |
| JPS612915A (en) * | 1984-06-15 | 1986-01-08 | Canon Inc | Rotary device |
| JPH01154115A (en) * | 1987-12-11 | 1989-06-16 | Matsushita Electric Ind Co Ltd | Rotating body supporting device |
-
1989
- 1989-11-30 JP JP1989139741U patent/JPH0752417Y2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919717A (en) * | 1982-07-23 | 1984-02-01 | Ngk Insulators Ltd | Heat resistant non-oil feeding structure |
| JPS612915A (en) * | 1984-06-15 | 1986-01-08 | Canon Inc | Rotary device |
| JPH01154115A (en) * | 1987-12-11 | 1989-06-16 | Matsushita Electric Ind Co Ltd | Rotating body supporting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0752417Y2 (en) | 1995-11-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |