JPS62251716A - Dynamic pressure fluid bearing type optical deflector - Google Patents
Dynamic pressure fluid bearing type optical deflectorInfo
- Publication number
- JPS62251716A JPS62251716A JP9595386A JP9595386A JPS62251716A JP S62251716 A JPS62251716 A JP S62251716A JP 9595386 A JP9595386 A JP 9595386A JP 9595386 A JP9595386 A JP 9595386A JP S62251716 A JPS62251716 A JP S62251716A
- Authority
- JP
- Japan
- Prior art keywords
- thrust
- dynamic pressure
- pad
- thrust pad
- hole
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 19
- 230000003287 optical effect Effects 0.000 title claims abstract description 8
- 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 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/12—Scanning systems using multifaceted mirrors
- G02B26/121—Mechanical drive devices for polygonal mirrors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、情報機器、画像機器、および計測機器に用い
られる動圧流体軸受型光偏向器に関するもので、主にス
ラスト軸受に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a dynamic pressure fluid bearing type optical deflector used in information equipment, imaging equipment, and measurement equipment, and mainly relates to thrust bearings. .
（従来の技術）
第１図に従来例を挙げる。１が固定軸であり、その表面
には、１という動圧発生用ｉｆｆ￥が設けである。(Prior Art) Fig. 1 shows a conventional example. Reference numeral 1 is a fixed shaft, and on its surface, an IF for dynamic pressure generation is provided.
また、この固定軸に外嵌する２の中空回転軸には、３の
回転多面鏡、４のマグネット、５のスラスト受、６のキ
ャップが設けられている（以下回転体という）。７はス
ラスト軸受、８はステータ、９．１０．１１はケース、
１２は開口部となってい机
まず回転体が回転すると、固定１１ｉｌ１１１に設けら
れた溝ａに回転方向より、第２図に示すように流体が流
れ込んでいき、くの字形の中央付近で圧力が大となり、
ラジアル方向を非接触に支持するようになる。また第三
図に示すように、スラス１一方向も同様に、スラスト軸
受７には螺旋上の溝すが、スラスト受５に対向する面に
もうけられている。Furthermore, a hollow rotating shaft 2 that is fitted onto the fixed shaft is provided with a rotating polygon mirror 3, a magnet 4, a thrust receiver 5, and a cap 6 (hereinafter referred to as a rotating body). 7 is a thrust bearing, 8 is a stator, 9.10.11 is a case,
12 is an opening. First, when the rotating body rotates, fluid flows into the groove a provided in the fixed 11il111 from the direction of rotation, as shown in Figure 2, and pressure builds up near the center of the dogleg shape. It becomes large,
Support is provided in the radial direction without contact. Further, as shown in FIG. 3, in one direction of the thrust bearing 7, a spiral groove is also formed in the thrust bearing 7 on the surface facing the thrust bearing 5.
この溝部に外側から内側へ流体が流れ込み、圧力を」−
Ｈさせ、回転体を浮上させることができる。Fluid flows into this groove from the outside to the inside, creating pressure.
H, and the rotating body can be levitated.
以上のようにして、ラジアル方向、スラス１一方向を非
接触で支持することができる。As described above, it is possible to support the radial direction and the thrust 1 in one direction without contact.
（発明の解決しようとする問題点）
このような動圧型スラスト軸受では、螺旋上のＳ ｂを
形成するには精密な加工を要して経済的でないという問
題点があった。(Problems to be Solved by the Invention) Such a dynamic pressure type thrust bearing has a problem in that forming the spiral Sb requires precision machining, which is not economical.
（問題点を解決するための手段）
本発明は実施例第４図に示すように、従来例第１図に示
すスラスト軸受７を除いて、スラスト受５の外周上より
スラスト受端面へ通じる穴Ｃを設けたことを除いては、
従来例と同様の構成を有すものである。(Means for Solving the Problems) As shown in FIG. 4 of the embodiment, the present invention provides a hole that communicates from the outer periphery of the thrust bearing 5 to the thrust bearing end surface, except for the thrust bearing 7 shown in the conventional example shown in FIG. Except for setting C.
It has the same configuration as the conventional example.
（作用）
このように構成された動圧流体軸受型光偏向器では、回
転体の回転に伴い、ラジアル方向は固定軸１の表面に設
けられたＲ４ ａにより発生する流体動圧で支持され、
スラスト方向は、スラスト受５の外周上の穴Ｃから流体
を受は入れ、スラスト受５の端面より流出する流体によ
ってその支持を得るというものである。(Function) In the dynamic pressure fluid bearing type optical deflector configured as described above, as the rotating body rotates, the radial direction is supported by the fluid dynamic pressure generated by R4a provided on the surface of the fixed shaft 1,
In the thrust direction, fluid is received through the hole C on the outer periphery of the thrust receiver 5, and support is obtained by the fluid flowing out from the end face of the thrust receiver 5.
（実施例）
以下１本発明による一実施例を第４図、第５図により説
明する。(Example) An example according to the present invention will be described below with reference to FIGS. 4 and 5.
第４図は、動圧流体軸受型光偏向器の縦断面図、第５図
はスラスト受、およびスラスト軸受の構成を説明する要
部断面図を示し、従来例第１図に示すスラスト軸受７を
除いて、スラスト受５の外周上よりその端面へ通じる穴
Ｃを設けたことを除いては、従来例と同様の構成を有す
るので、第１図との同一部分には同一符号を付して、詳
細な説明は省略する。FIG. 4 is a longitudinal cross-sectional view of a dynamic pressure fluid bearing type optical deflector, and FIG. The structure is the same as that of the conventional example except that a hole C is provided from the outer periphery of the thrust receiver 5 to the end surface thereof, so the same parts as in FIG. 1 are given the same reference numerals. Therefore, detailed explanation will be omitted.
第４図において、１は固定軸、２は中空回転軸、３はミ
ラー、４はマグネット、５はスラスト受、６はキャップ
、８はステータ、９．１０．１１はケース、１２は開口
部、ａはラジアル溝、Ｃはスラスト受用穴となっている
。このように構成された動圧流体軸受型光偏向器では１
回転体の回転に伴い、ラジアル方向は溝ａにより発生す
る流体圧力ににより支持される。また、スラスト方向に
ついては、第５図に示すようにスラスト受が上から見て
右回りに回転すると、スラスト受外周面より端面に通じ
る穴Ｃが設けられているために、外周面より流入した流
体は端面より流出し、従ってスラスト受５とケース１１
間に流体膜を構成し。In Fig. 4, 1 is a fixed shaft, 2 is a hollow rotating shaft, 3 is a mirror, 4 is a magnet, 5 is a thrust receiver, 6 is a cap, 8 is a stator, 9.10.11 is a case, 12 is an opening, A is a radial groove, and C is a thrust receiving hole. In the dynamic pressure fluid bearing type optical deflector configured in this way, 1
As the rotating body rotates, the radial direction is supported by fluid pressure generated by the grooves a. In addition, regarding the thrust direction, as shown in Figure 5, when the thrust receiver rotates clockwise when viewed from above, there is a hole C that communicates with the end face from the outer circumferential surface of the thrust receiver. The fluid flows out from the end face, and therefore the thrust receiver 5 and the case 11
A fluid film is formed in between.
スラスト方向を非接触に支持するものである。It supports the thrust direction in a non-contact manner.
（効果）
以上説明したように本発明によれ也ｆ、螺旋ｔｌｌを設
けたスラスト軸受のかわりに、スラスト受外周１面１こ
端面と通じる穴を設けることもこより、部品点数の削減
と、加工工程の簡略化、またコストの低下などの利点が
ある。(Effects) As explained above, according to the present invention, instead of a thrust bearing provided with a spiral tll, a hole communicating with one end face of the outer circumference of the thrust bearing is provided, thereby reducing the number of parts and machining. It has advantages such as simplified process and lower cost.
第１図は従来例、第２図、第３図は動圧軸受の構成図、
第４図は本発明による一実施例、第５図は本発明の構成
図である。
１・・固定軸 ２・・中空回転軸３・・
回転多面鏡 ４・・マグネット５・・スラス
ト受 ６°°キヤツプ７・・スラスト軸受
８°−ステー９９、ｌＱ、１１・・ケース
１２・・開口部ａ、ｂ・・溝 Ｃ・・スラス
ト軸受穴特許出願人 コバル電子株式会社
味２瘍
ネ色巳
鼻４１色
１ （。５Figure 1 is a conventional example, Figures 2 and 3 are configuration diagrams of dynamic pressure bearings,
FIG. 4 is an embodiment of the present invention, and FIG. 5 is a block diagram of the present invention. 1. Fixed shaft 2. Hollow rotating shaft 3.
Rotating polygon mirror 4... Magnet 5... Thrust bearing 6°° Cap 7... Thrust bearing
8°-stay 99, lQ, 11... case
12... Openings a, b... Groove C... Thrust bearing hole Patent applicant Kobal Electronics Co., Ltd.
Claims (1)
定軸と、この固定軸に外嵌する中空回転軸を持ち、中空
回転軸には少なくとも回転多面鏡、回転駆動用マグネッ
ト、および、スラスト受をもつような動圧流体軸受型偏
向器において、スラスト受にその側面より下部に通じる
穴が１ケ所、あるいは放射状に数ケ所設けたことを特徴
とする動圧流体軸受型光偏向器。The shaft surface fixed to the case has a fixed shaft with a groove for generating dynamic pressure, and a hollow rotating shaft that fits onto the fixed shaft, and the hollow rotating shaft has at least a rotating polygon mirror, a rotational drive magnet, and , a dynamic pressure fluid bearing type optical deflector having a thrust bearing, characterized in that the thrust bearing has one hole or several holes radially extending from the side surface to the lower part of the thrust bearing. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9595386A JPS62251716A (en) | 1986-04-25 | 1986-04-25 | Dynamic pressure fluid bearing type optical deflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9595386A JPS62251716A (en) | 1986-04-25 | 1986-04-25 | Dynamic pressure fluid bearing type optical deflector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62251716A true JPS62251716A (en) | 1987-11-02 |
Family
ID=14151615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9595386A Pending JPS62251716A (en) | 1986-04-25 | 1986-04-25 | Dynamic pressure fluid bearing type optical deflector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62251716A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006337171A (en) * | 2005-06-02 | 2006-12-14 | Nidec Copal Electronics Corp | Inspection device of inner wall surface |
-
1986
- 1986-04-25 JP JP9595386A patent/JPS62251716A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006337171A (en) * | 2005-06-02 | 2006-12-14 | Nidec Copal Electronics Corp | Inspection device of inner wall surface |
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