JPH0431112U - - Google Patents
Info
- Publication number
- JPH0431112U JPH0431112U JP7234290U JP7234290U JPH0431112U JP H0431112 U JPH0431112 U JP H0431112U JP 7234290 U JP7234290 U JP 7234290U JP 7234290 U JP7234290 U JP 7234290U JP H0431112 U JPH0431112 U JP H0431112U
- Authority
- JP
- Japan
- Prior art keywords
- dynamic pressure
- groove
- fixed shaft
- fixed
- receiving surface
- 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
- 230000003287 optical effect Effects 0.000 claims description 2
- 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 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005339 levitation Methods 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Sliding-Contact Bearings (AREA)
Description
第１図〜第４図は、本考案による動圧空気軸受
型光偏向器の実施例を示し、第１図はラジアルギ
ヤツプ型の断面構成図、第２図は、アキシヤルギ
ヤツプ型の断面構成図、第３図は、本考案の動作
を示す拡大図、第４図はスラスト軸受の拡大図、
第５図〜第７図は従来例を示し、第５図はラジア
ルギヤツプ型の断面構成図、第６図、第７図はラ
ジアル軸受の動作、スラスト軸受の動作をそれぞ
れ示したものである。
１……固定軸、２……中空回転軸、３……回転
多面鏡、４……キヤツプ、５……回転駆動用マグ
ネツト、６……ステータ、７，８，９……ケース
、１０……スラスト軸受、１１，２１……ヨーク
、１３……回転駆動用マグネツトカバー、ａ，ｂ
……動圧発生用溝、ｃ……スラスト浮上用溝、ｄ
……スパイラル状の溝、ｅ……微小穴、ｆ……ス
ラスト受面。
1 to 4 show examples of the dynamic pressure air bearing type optical deflector according to the present invention, FIG. 1 is a cross-sectional configuration diagram of a radial gap type, and FIG. 2 is a cross-sectional diagram of an axial gap type. A configuration diagram, FIG. 3 is an enlarged view showing the operation of the present invention, and FIG. 4 is an enlarged view of the thrust bearing.
5 to 7 show conventional examples, with FIG. 5 being a cross-sectional view of a radial gap type bearing, and FIGS. 6 and 7 showing the operation of a radial bearing and a thrust bearing, respectively. 1... Fixed shaft, 2... Hollow rotating shaft, 3... Rotating polygon mirror, 4... Cap, 5... Rotation drive magnet, 6... Stator, 7, 8, 9... Case, 10... Thrust bearing, 11, 21... Yoke, 13... Magnetic cover for rotational drive, a, b
...Groove for dynamic pressure generation, c...Groove for thrust levitation, d
...Spiral groove, e...Minute hole, f...Thrust receiving surface.
Claims (1)
生用の溝ａ，ｂを設け、前記固定軸１に中空回転
軸２を外嵌し、この中空回転軸２には少なくとも
回転多面鏡３、回転駆動用マグネツト５、スラス
ト受面ｆを設け、前記スラスト受面ｆに対向して
、動圧発生用のスパイラル状の溝ｄの設けられた
動圧スラスト軸受１０を有する構成の動圧空気軸
受型光偏向器において、 前記固定軸１の表面に設けられた溝ｂの下側に
前記中空回転軸２の回転に伴い、空気を下方へ送
るような溝ｃを設けたことを特徴とする動圧空気
軸受型光偏向器。[Claims for Utility Model Registration] Grooves a and b for generating dynamic pressure are provided on the surface of a fixed shaft 1 fixed to a case 9, and a hollow rotating shaft 2 is fitted onto the fixed shaft 1. 2 is provided with at least a rotating polygon mirror 3, a rotation drive magnet 5, and a thrust receiving surface f, and a hydrodynamic thrust bearing in which a spiral groove d for generating dynamic pressure is provided opposite to the thrust receiving surface f. 10, a groove c is provided below the groove b provided on the surface of the fixed shaft 1 to send air downward as the hollow rotating shaft 2 rotates. A dynamic pressure air bearing type optical deflector characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7234290U JPH0431112U (en) | 1990-07-09 | 1990-07-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7234290U JPH0431112U (en) | 1990-07-09 | 1990-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0431112U true JPH0431112U (en) | 1992-03-12 |
Family
ID=31610194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7234290U Pending JPH0431112U (en) | 1990-07-09 | 1990-07-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0431112U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994016233A1 (en) * | 1993-01-08 | 1994-07-21 | Sumitomo Electric Industries, Ltd. | Combination bearing construction |
-
1990
- 1990-07-09 JP JP7234290U patent/JPH0431112U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994016233A1 (en) * | 1993-01-08 | 1994-07-21 | Sumitomo Electric Industries, Ltd. | Combination bearing construction |
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