JPS6220914A - Motor bearing - Google Patents
Motor bearingInfo
- Publication number
- JPS6220914A JPS6220914A JP15955185A JP15955185A JPS6220914A JP S6220914 A JPS6220914 A JP S6220914A JP 15955185 A JP15955185 A JP 15955185A JP 15955185 A JP15955185 A JP 15955185A JP S6220914 A JPS6220914 A JP S6220914A
- Authority
- JP
- Japan
- Prior art keywords
- rotary sleeve
- permanent magnet
- fixed shaft
- stator yoke
- rotor
- 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
- 238000005339 levitation Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 1
- 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 10
- 238000007667 floating Methods 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 206010011878 Deafness Diseases 0.000 description 1
- 244000007853 Sarothamnus scoparius Species 0.000 description 1
- 241000385223 Villosa iris Species 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 231100000895 deafness Toxicity 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000016354 hearing loss disease Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
(発明の利用分野)
本発明は、例えばンーザプリンタに用いられるミラー・
スキャニング用モータ等のように非常に高速回転を要求
されるとともに、その回転精度を高く要求さ性るモータ
におけるモータ軸受に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention is directed to a mirror or
The present invention relates to a motor bearing in a motor that is required to rotate at a very high speed, such as a scanning motor, and which also requires high rotation accuracy.
(発明の背景)
例えばレーザプリンタ用ミラー・スキャニングモータ等
のように非常に高速回転を要求されるとともに、その回
転W1度を高く要求されるモータにおいては、接触型軸
受に時っている液体あろいH気体を用いて回転子を浮上
させることによって支持する無接触型の軸受が要望され
ている。(Background of the Invention) For example, in motors that are required to rotate at extremely high speeds, such as mirror scanning motors for laser printers, and which require a high rotation W1 degree, the amount of liquid in contact type bearings is reduced. There is a need for a non-contact type bearing that supports the rotor by floating it using high H gas.
こうした−イー接触型の軸受において液#−あるいは気
体によりモータの回(鴫を浮上さする。鳴合、液体ちる
いけ気体を、ポンプ等によって強制的に供給する静圧型
の軸受と、回転軸が回転を開始することにより、自然吸
気により供給させる動#F:、型匍受とが知られている
。In these type of contact type bearings, liquid or gas is used to float the motor. A type holder is known in which air is supplied by natural intake by starting rotation.
しづ)しながら、置体外形寸法の小型化を要求される、
例えばレーザプリンタ用のミラー・スキャニングモータ
のような場合にあっては、付属装置の必要の無い動圧型
の@受が好まれる。However, while the external dimensions of the device are required to be smaller,
For example, in the case of a mirror scanning motor for a laser printer, a dynamic pressure type @ receiver that does not require an accessory device is preferred.
(従来の問題点)
従来、こうした動圧型の中受にあっては第21切に示し
たように、箒体1の内部に、固定用2が座部2aを介1
7て立てられていて、座部2a−11面にけ後rrgす
る回転スリーブを浮上させる永久磁石2hを有している
。(Conventional Problems) Conventionally, in such a dynamic pressure type intermediate support, as shown in the 21st section, the fixing member 2 is attached to the inside of the broom body 1 through the seat portion 2a.
It has a permanent magnet 2h which levitates the rotating sleeve which is erected on the surface of the seat 2a-11.
核固定@2を、橿い内包するよう(回転スリ+プ(lo
1転子)3が配されていて、咳回転スリーブ3の烙中哩
には回転用の永久磁石4が配されていて、図面F回転子
下部の・南口部33面辺には、浮上用の永久磁石3bが
前記回転子側の浮と用永久磁石2bとは対向して配設さ
れて10る。Nucleus fixation@2 is encapsulated in a rotary slip (lotation slip).
A permanent magnet 4 for rotation is arranged at the center of the rotating sleeve 3, and a permanent magnet 4 for rotation is arranged at the lower part of the rotor in Fig. A permanent magnet 3b is disposed opposite to the floating permanent magnet 2b on the rotor side.
さらに固定用2の周囲には、浮上を助けるとともK、回
転時に気体の流速ちるいは方向に対応した有数の溝2C
が施さ虹ている。Furthermore, around the fixing member 2, there are grooves 2C that help the levitation and correspond to the gas flow velocity and direction during rotation.
There are rainbows.
筐体内部にあって、回・統スリーブ3の周囲に配されて
いる回吸用永久磁石4と対向していて、rllココイル
5a含むステータヨーク5が設けられている。A stator yoke 5 is provided inside the casing, facing the recirculation permanent magnet 4 disposed around the recirculation sleeve 3, and including an rll cocoil 5a.
こうした従来例においてR1浮上のために一対の永久磁
石を必要とするために、部品点蚊の増加を招き、また回
転中の回転・1itll−1身の4尼・力による影響、
ちるい吋磁束の不一致からくる回転子・袖の偏心といつ
た不具合を引き起こすことを避けるために、回・味の方
向に従ってlc”1 %子と制定釉との間隙を圧縮・膨
張しな−h;ら通過する気体の流ね、・流速を制@する
とともに浮上をす叶る複雑づ・つ数ミクロンj算位の加
工ff1度を要求さ性る溝加工を固定用に1崩す必要と
していたために倚噸加工上不都合を生じていた。In such a conventional example, since a pair of permanent magnets are required for R1 levitation, it leads to an increase in the number of component points, and also the influence of rotation during rotation, 4-force force, etc.
In order to avoid problems such as eccentricity of the rotor and sleeve due to mismatch of magnetic flux, do not compress or expand the gap between the lc"1% glaze and the glaze according to the direction of rotation. h; Flow of gas passing through, ・Controlling the flow velocity and levitation is a complicated process.・Machining of several microns is required. This caused inconvenience in processing.
また、停小寺にあっては回鵞スリーブ3が浮上j2てお
らず、回転を開始してから浮−ヒする動圧型の用量にち
っては、停屯中におけろ揄送の櫟に回転スリーブ3の・
用口部3aが・蛸足・抽2にちだり、ちるいけ停市から
回転4始に警ける鷹擦により、接触4が磨耗してしまい
切削粉が発生してしまうといった土部・シφ生じていた
。In addition, when at a small temple, the rotating sleeve 3 does not float, and in the case of a dynamic pressure type, which floats after starting rotation, the rotating sleeve 3 does not float during the parking period. Sleeve 3・
If the opening part 3a is affected by the tako foot or drawer 2, or the contact 4 is worn out due to the hawk rubbing that occurs from the chiruike stop to the start of rotation 4, the contact 4 will be worn and cutting powder will be generated. was occurring.
聾
(箔明の目的)
本邊明の目的とするところは、上述の不都合な点に鑑み
、回転子の浮上専用の永久磁石を廃し、複雑な構加工を
簡略化し、さらにはこうした構造にあっても停止l:4
および回転時においても回転子が信に浮上して1呈侍さ
れてbるようにしだモータの・晰受を提供することにあ
る。Deafness (Purpose of Akira Haku) In view of the above-mentioned disadvantages, Akira Honbe's purpose was to eliminate the permanent magnet used exclusively for the levitation of the rotor, simplify the complicated structural processing, and furthermore, But stop l:4
Also, the purpose is to provide a clear reception of the motor so that the rotor floats up and is held in place even during rotation.
(発明の構成)
上述した本発明のq的lは、モータの補体と、核笛体に
固定されていて他端が1枚状・川にされている固定用と
、核固定@を曲端の唄から内包して慢うように逆カヅプ
の形状を有している1I−1]耘子と、回転子の開口の
裾部周囲には永久磁石が支持六れていて、邊線コイルを
有し、該永久磁石と対向するように前記筐体の内周に支
持されてA記回転子に回・晒力に浮上力な作用させろス
テータヨークと力)ら、構成されたことにより達成され
る。(Structure of the Invention) The above-mentioned q-l of the present invention consists of a motor complement, a fixation part fixed to the nucleus flute body and having the other end shaped like a single plate, and a nucleus fixation @ bent. 1I-1, which has the shape of an inverted cup that is proudly contained in the end song, and a permanent magnet is placed around the bottom of the opening of the rotor to support the side wire coil. This is achieved by having a stator yoke, which is supported on the inner periphery of the housing so as to face the permanent magnets, and which acts on the rotor A as a levitation force in addition to the rotational force. Ru.
(発明の実施例)
以下、本発明の好適なる実物例をもとに、’?1面を参
照しながら、説明する。(Embodiments of the Invention) Hereinafter, based on preferred actual examples of the present invention, '?' This will be explained with reference to page 1.
第1図は、本発明の一実施例を示すレーザプリンタ用ミ
ラー・スキャニングモータの析r石図である。FIG. 1 is a spectral diagram of a mirror scanning motor for a laser printer showing one embodiment of the present invention.
1は暗本である。1 is a dark book.
2は固定用で、一端が筐体1に座部2af介してr立に
支持され、曲端が、爛・々状・11にtかれている。Reference numeral 2 denotes a fixing member, one end of which is supported vertically by the housing 1 via a seat portion 2af, and the bent end thereof is curved into a rounded shape 11.
31性・ψカップ伏の回転スIJ−7”で、固定・′柑
2を内焦するように覆っていて、木実施例に外いて″は
核固定・11112の外周と回転スリーブ3の開口邪3
aの内周に1寸数ミクロン埠度の間隙を有I7ていると
とも1(、゛頂部近辺においてや叶り致ミクロン以上の
間隙の搾り溝3cを有するように配さ1てIAる。。31 ・The rotary sleeve IJ-7" with the ψ cup facing down is fixed. ``It covers the body 2 so as to focus on the inside, and when removed from the wooden embodiment," is the nucleus fixed. ・The outer periphery of 11112 and the opening of the rotating sleeve 3 Evil 3
There is a gap I7 with a clearance of several microns on the inner periphery of a, and a squeeze groove 3c with a clearance of a few microns or more is arranged near the top. .
4□吋永久磁石で、回転スリーブ3の、川口ff13a
近傍D■囲に配役されていて、後述するステータダーク
との作用により回転のための磁束形成を行うとともに、
回転スリーブ3の浮上のだめのiM気吸引力も有)7て
いる。4□2 permanent magnet, rotating sleeve 3, Kawaguchi ff13a
It is placed around the vicinity D, and forms magnetic flux for rotation by interacting with the stator dark, which will be described later.
There is also an iM suction force of the levitation reservoir of the rotating sleeve 3).
5ば・賽体1の1り固に支持されたステータヨークで、
f隆線コイル5aを含み前記回転スリーブ3の周囲に配
されている永久磁石4とにより磁烙杉成を行い、その互
いの磁気吸引力により回転スリーブ3の浮上状態を保つ
。5. The stator yoke is firmly supported by the die 1.
The permanent magnet 4 including the f-ridge coil 5a and the permanent magnet 4 arranged around the rotary sleeve 3 performs magnetic combustion, and the rotary sleeve 3 is kept in a floating state by their mutual magnetic attraction force.
上述したI′ll成の軸受において、まず停(ヒ寺ある
いは低速回転時のように、気体の吸気による勅圧全生を
ほとんど明待で角ない場合でちっても、永久磁石4とス
テータヨーク5との間には、互いに磁気:l引力が発生
していることにより、回転スリーブ3は固定軸2から浮
上した状態となる。In the above-mentioned bearing of I'll structure, even if the entire force generated by the gas intake is almost constant, such as when the bearing stops or when rotating at low speed, the permanent magnet 4 and the stator yoke Since a magnetic attraction force is generated between the rotating sleeve 3 and the fixed shaft 2, the rotating sleeve 3 is in a floating state from the fixed shaft 2.
これは、第1図上で左右にあるステータヨーク5とそ札
に対向する永久磁石4とのあいだに岐左右水平に働く磁
気吸引力のベクトルf1 ・f2の和ベクトルFは’−
W4上の上方に向かっているので、回転スリーブ3は浮
上する。This is because the sum vector F of the magnetic attraction force vector f1 and f2 acting horizontally on the left and right between the stator yoke 5 on the left and right in FIG. 1 and the permanent magnet 4 facing the plate is '-
Since it is directed upward above W4, the rotating sleeve 3 floats up.
つ之゛に、41回転時においては、回軸スリーブ3の開
口43aから気体の吸気がな嘘れ、回1にスリーブ3の
浮上の安定が図られる。At the same time, during the 41st rotation, gas is removed from the opening 43a of the rotating sleeve 3, and the floating of the sleeve 3 is stabilized during the 1st rotation.
また、従来に叱べ永久磁石同志の対向による浮上では無
く、また動圧への依存塵が低下している点から簡易な加
工により得られる、図示しない溝を固定・1伯2の周囲
に気体の流れの効率を同上させるように設けである場合
、回転スリーブ3と固定1(情2との間隙が一定の範・
用向に保たれ、偏心の虞れが減少する。In addition, instead of the conventional levitation caused by opposing permanent magnets, and because the dependence of dust on dynamic pressure is reduced, it is possible to fix a groove (not shown) by simple processing. If the space between the rotary sleeve 3 and the stationary sleeve 3 is within a certain range or
This reduces the risk of eccentricity.
なお、浮上用の永久磁石が従来占めていたスペースが空
いたため1で、回転スリーブの回転位置を検出するだめ
の検出湊遁の素子を配置することが可能であり、従来に
比して噴出素子の配「惺に自由度が増したことになる。In addition, since the space previously occupied by the permanent magnet for levitation is now available, it is possible to place the detection element for detecting the rotational position of the rotating sleeve in 1, and the ejection element ``This means that the degree of freedom has increased.''
(発明の効果)
上述したように、本発明を利用することにより、停止ヒ
時あるいは何〜立ち上がり時のような低速回転+1キと
いっ尭4ItJIIEを殆ど明待できない場合において
も、回転部の浮上を確実にしているため、列えばへ品の
輸送途中において本、圧いに衝突して損傷を生じる危険
が著しく低下するモータ肉受が得られる。(Effects of the Invention) As described above, by utilizing the present invention, the floating of the rotating part can be maintained even when it is difficult to wait for a low speed rotation of +1 k, such as when stopping or when starting up. As a result, a motor support can be obtained that significantly reduces the risk of damage caused by collisions with books and presses during transportation of goods.
また、回味部を浮上させるために従来必要でちった一対
の永久磁石も不要となったことに1す、部品点教が当然
のことながら減少し、コストも従って低下したモータ軸
受が得られる。Furthermore, since a pair of permanent magnets, which were conventionally necessary to levitate the retrieval part, are no longer required, the number of parts required is naturally reduced, and a motor bearing with a reduced cost can be obtained.
さらには、浮上を助けるだめの「司定軸への#加工も簡
略化されるこ七によ〜て、作4f4上からも工程削減を
図ることが出来るモータ軸受を得られる。Furthermore, the machining of the control shaft that helps the levitation is also simplified, making it possible to obtain a motor bearing that can reduce the number of manufacturing steps.
さらなる効果として、従来回転状・(の・位・を検出お
よび回転地浮上の三4能を別途に復故1問要した永久磁
石全単一の永久磁石により侑える。As an additional effect, the 34 functions of detecting rotational shape and rotational ground levitation can be achieved by using a single permanent magnet, which previously required one separate recovery.
4、 図「酊のlll1瓜な説明
第1g1Jは、本発明の実施例を示したモータ軸受の断
面1−21で、官2図吋、従来のモータEIIh受を示
し九“析・@図である。4. Figure 1g1J is a cross section 1-21 of a motor bearing showing an embodiment of the present invention, and Figure 2 is a cross-section of a motor bearing according to an embodiment of the present invention. be.
1・・・・・筐体
2・・・・・・固定軸
3・・・・・回転スリーブ
4・・・・永久磁石
5・・・・・ステータヨーク
6・・・・・・噴出器
持杵出噸人 株式会社 コ パ ル
手続桶市与(方式)
昭和60年11月22日
1 重性の侵示
昭和60年時杵願笥15955]号
2 発・Illの名称
モータ柚受
3 補正をする者
特許出頓人
〒】74 東京邦板唯区志村2の16の20電話(9
fi5)+1111...Casing 2...Fixed shaft 3...Rotating sleeve 4...Permanent magnet 5...Stator yoke 6...Blowout holder 1. Serious Infringement 1985 15955] No. 2 Issued/Ill Name Motor Yuzuke 3 Amendment Person who obtains patents 〒】74 Tokyo Home Board Yui-ku Shimura 2-16-20 Telephone (9)
fi5)+111
Claims (1)
浮上させる構造を有するモータにおいて、筐体と、 一端が該筐体に固定され他端が開放状態に置かれている
固定軸と、 逆カップ状であって、頭部に絞り溝を形成し、該固定軸
を他端の方から内包させて覆うように配置された回転子
と、 該回転子のカップ開口の裾部周囲に支持された永久磁石
と、 捲線コイルを有し、該永久磁石に対向するように前記筐
体の内周に支持され、前記回転子に回転力と浮上力を作
用させるステータヨークと、から構成されていることを
特徴とするモータ軸受。[Claims] 1. A motor having a structure in which a rotating part is levitated using dynamic pressure of gas or liquid, which includes a casing, one end of which is fixed to the casing, and the other end of which is left open. a fixed shaft having an inverted cup shape, a rotor having an aperture groove formed in its head and disposed so as to enclose and cover the fixed shaft from the other end; and a cup opening of the rotor. a stator yoke that has a permanent magnet supported around the hem of the rotor, and a stator yoke that has a winding coil, is supported on the inner periphery of the housing so as to face the permanent magnet, and applies rotational force and levitation force to the rotor. A motor bearing comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15955185A JPS6220914A (en) | 1985-07-19 | 1985-07-19 | Motor bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15955185A JPS6220914A (en) | 1985-07-19 | 1985-07-19 | Motor bearing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6220914A true JPS6220914A (en) | 1987-01-29 |
Family
ID=15696214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15955185A Pending JPS6220914A (en) | 1985-07-19 | 1985-07-19 | Motor bearing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6220914A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02103522U (en) * | 1989-02-03 | 1990-08-17 | ||
US5710470A (en) * | 1991-04-04 | 1998-01-20 | Ebara Corporation | Hydrodynamic bearing assembly |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59202430A (en) * | 1983-05-04 | 1984-11-16 | Canon Inc | Rotation driving device |
-
1985
- 1985-07-19 JP JP15955185A patent/JPS6220914A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59202430A (en) * | 1983-05-04 | 1984-11-16 | Canon Inc | Rotation driving device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02103522U (en) * | 1989-02-03 | 1990-08-17 | ||
US5710470A (en) * | 1991-04-04 | 1998-01-20 | Ebara Corporation | Hydrodynamic bearing assembly |
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