JPH0387715A - Motor for laser beam printer - Google Patents
Motor for laser beam printerInfo
- Publication number
- JPH0387715A JPH0387715A JP22625589A JP22625589A JPH0387715A JP H0387715 A JPH0387715 A JP H0387715A JP 22625589 A JP22625589 A JP 22625589A JP 22625589 A JP22625589 A JP 22625589A JP H0387715 A JPH0387715 A JP H0387715A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- polygon mirror
- rotary polygon
- shallow dish
- dish body
- 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
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007730 finishing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
Landscapes
- Laser Beam Printer (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Brushless Motors (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はレーザビームプリンタ用モータに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a motor for a laser beam printer.
〔従来の技術と発明が解決しようとする課題］従来のレ
ーザビームプリンタ用モータは、第１０図と第１１図に
示す様に、ブラケットａの円筒部すに軸受ｊ、ｊを介し
て枢支されるシャフトＣと、該円筒部すに外嵌されるス
テータｄと、シャフトＣの一端側に固着されるロータホ
ルダｅと、該ロータホルダｅに取付盤ｒを介してボルト
ｍにて取付けられる平板状の回転多面鏡体ｇと、該ロー
タホルダｅに取付けられるロータマグネットｈと、を備
えている。ｉはロータヨーク、ｋは制御基板、ｎはホー
ル素子である。[Prior art and problems to be solved by the invention] As shown in FIGS. 10 and 11, the conventional motor for a laser beam printer is pivoted on the cylindrical portion of the bracket a via bearings j, j. a stator d that is fitted onto the cylindrical portion, a rotor holder e that is fixed to one end of the shaft C, and a flat plate that is attached to the rotor holder e with bolts m via a mounting plate r. The rotating polygon mirror g and the rotor magnet h attached to the rotor holder e are provided. i is a rotor yoke, k is a control board, and n is a Hall element.
従って、回転多面鏡体ｇは平板状であるので重量が大き
く、モータ容量を大きくしなければならなかった。そ、
のために、製品全体の重量が大きくなると共に消費電力
が大となる欠点があった。Therefore, since the rotating polygon mirror g has a flat plate shape, it is heavy and the motor capacity must be increased. So,
Therefore, the weight of the entire product increases and the power consumption increases.
そこで、本発明では、回転多面鏡体ｇの質量を小さくし
て、モータ容量を小さくできるレーザビームプリンタ用
モータを提供することを目的とする。Therefore, an object of the present invention is to provide a motor for a laser beam printer that can reduce the mass of the rotating polygon mirror g and reduce the motor capacity.
上述の目的を達成するために、本発明のレーザビームプ
リンタ用モータは、金属平板からプレス加工にて浅皿体
を形成すると共に該浅皿体の周壁外面を鏡面加工してな
る回転多面鏡体を、備えたものである。In order to achieve the above-mentioned object, the motor for a laser beam printer of the present invention includes a rotary polygon mirror body formed by forming a shallow dish body by press working from a metal flat plate and mirror-finishing the outer surface of the peripheral wall of the shallow dish body. It is equipped with the following.
回転多面鏡体は浅皿型となるので、内部は中空状となり
、無駄な部位がなく該鏡体の重量を小とすることができ
る。Since the rotating polygon mirror has a shallow dish shape, the interior is hollow, and there is no wasted portion, making it possible to reduce the weight of the mirror.
また、プレス加工によって同転多面鏡体は形成できるた
め、その製造が容易となる。In addition, since the co-rotating polygon mirror can be formed by press working, its manufacture becomes easy.
（実施例〕 以下、実施例について図面を参照して説明する。(Example〕 Examples will be described below with reference to the drawings.
第１図と第２図は本発明に係るレーザビームプリンタ用
モータを示し、ブラケット１の円筒部２に軸受３．３を
介して枢支されるシャツ）４と、該シャフト４の−・端
に固着され６浅皿状の１０１転多面鏡体５と、該鏡体５
の内面６にロータヨーク７を介して取付けられる平板状
ロータマグネント８と、ブラケントｌのフランジ９に固
着される制御基板１０と、該基板１０上に該ロータマグ
ネント８と面対向状に配設される平面状コイル１．１と
、を備えている。１２は平面状コイル１１に対応する゛
］Ｆ、板状ヨークである。1 and 2 show a motor for a laser beam printer according to the present invention, which includes a shirt (4) pivoted to a cylindrical portion 2 of a bracket (1) via a bearing (3.3), and an end of the shaft (4). 6 A shallow dish-shaped 101-turn polygonal mirror body 5 fixed to the mirror body 5;
A flat rotor magnet 8 is attached to the inner surface 6 of the rotor yoke 7 via a rotor yoke 7, a control board 10 is fixed to the flange 9 of the Brakent l, and a control board 10 is arranged on the board 10 so as to face the rotor magnet 8. A planar coil 1.1 is provided. 12 is a plate-shaped yoke corresponding to the planar coil 11.
しかして、回転多面鏡体５は、金属平板からプレス加工
にて第６図に示す様な浅皿体１３を形成し、その後、該
浅皿体１３の周壁１４外面１５を鏡面仕りげして形成さ
れるものであり、その中心孔５ａにシャフト４の−・端
が挿入固着されている。Thus, the rotating polygon mirror 5 is produced by forming a shallow dish body 13 as shown in FIG. 6 by press-working a flat metal plate, and then mirror-finishing the outer surface 15 of the peripheral wall 14 of the shallow dish body 13. The end of the shaft 4 is inserted and fixed into the center hole 5a.
ここで、浅皿体１３とは、平面視において（本実施例で
は）六角形とされ、その外面１５が鏡面加トされて鏡面
１６が形成されるものであり、連体的には、各′：１−
す部には、第３図に示ず様に、舌片部１７・・・を突出
させている。このｊモ片部１７は平面視において略三角
形状とされ、その斜辺１．８．１８は鏡面１６の仕上げ
加［の際に加−ｒの障害とならないように、その周壁１
４外面１５、具体的には相隣位する鏡面形成用部１９．
１９の外面２＋、、 ２１の延長面２０．２０より僅か
内方とされる。２２は周壁１４の鏡面形成用部１．９．
１９に連設される連設部である。また、舌片部１７と周
壁１４の連設部２２との間には、第４図と第５図に示す
様に、窓部２３が設けられている。Here, the shallow dish body 13 has a hexagonal shape in plan view (in this embodiment), and its outer surface 15 is mirror-finished to form a mirror surface 16. :1-
As shown in FIG. 3, a tongue portion 17 is projected from the bottom portion. This J-shaped piece 17 has a substantially triangular shape in plan view, and its oblique side 1.8.18 is attached to its peripheral wall 1 so as not to obstruct the finishing process of the mirror surface 16.
4 outer surface 15, specifically adjacent mirror surface forming portions 19.
The outer surfaces 2+, . 22 is a mirror surface forming portion 1.9 of the peripheral wall 14.
This is a continuous part connected to 19. Further, a window portion 23 is provided between the tongue portion 17 and the continuous portion 22 of the peripheral wall 14, as shown in FIGS. 4 and 5.
即ち、この舌片部１７を形成部゛ることにより、プレス
加［の際に生しるコーナ部の凹凸をなくして、回転多ｌ
Ｔｌ１鏡体５のＬ壁２４１面２４ａを平面状としＣいる
。That is, by forming the tongue portion 17, the unevenness of the corner portion that occurs during pressing can be eliminated, and the rotational speed can be increased.
The L wall 241 surface 24a of the Tl1 mirror body 5 is flat.
このように、平面状に形成されるため、鏡面仕」二げの
際に、回転多面鏡体５を多数積み重ねることが可能とな
り、多段積みによる同時多数加圧を実現している。この
とき、鏡面１６・・・を形成するには、第６図に示す様
に、複数個の浅皿体１３・・・を積み重ねると共に浅皿
体１３・・・の軸心孔２５・・・に支持杆２６を挿入し
、各浅皿体１３・・・を支持杆２６にて保持さセる。そ
して、ガイド治具（図示省略）により、各浅皿体１３・
・・は、その周壁１４の外面１５が瓦いに揃えられ、Ｌ
下より適度の押匝力が加えられ、固定される。その後、
ガイド治具を取り外し、各浅皿体１３・・・の鏡面形成
部１９・・・が揃えられた状態で鏡面形成用部１９の外
面２１を研摩等を行い鏡面（を上げする。従って、−度
に多数の鏡面形成用部１９の外面２１を鏡面１６とする
ことができ、作業性がよい、また、舌片部１７の斜辺１
８．１８は延長面２０．２０より内側に設けられるので
該舌片部１７・・・は鏡面加Ｔの際邪魔にならず、しか
も、この舌片部１７・・・を有することにより、浅皿体
１３の各コーナ部には凹へ部が形成されず、従って図例
の様に積み電ねた場合においてガタつかず安定した状態
を保つことができ、鏡面加圧が行いやすい。Since they are formed in a planar shape in this way, it is possible to stack a large number of rotating polygonal mirror bodies 5 during mirror polishing, thereby realizing simultaneous multiple pressurization by stacking them in multiple stages. At this time, in order to form the mirror surfaces 16, as shown in FIG. A support rod 26 is inserted into the support rod 26, and each shallow dish body 13 is held by the support rod 26. Then, using a guide jig (not shown), each shallow dish body 13 and
. . ., the outer surface 15 of the peripheral wall 14 is aligned in a tile pattern, and the L
Appropriate pushing force is applied from below and it is fixed. after that,
The guide jig is removed, and with the mirror surface forming parts 19 of each shallow dish body 13 . The outer surface 21 of a large number of mirror surface forming parts 19 can be made into mirror surfaces 16 at the same time, and the workability is good.
8.18 is provided inside the extension surface 20.20, so the tongue portions 17... do not get in the way during mirror finishing T, and by having the tongue portions 17... No concave portion is formed in each corner of the dish body 13, so that even when the batteries are stacked as shown in the figure, a stable state can be maintained without wobbling, and mirror surface pressurization can be easily performed.
次に、第７図と第８図は他の実施例を示し、この場合、
回転多面鏡体５には舌片部１７が形成されていない。従
って、プレス加工にて浅耶体１３を形成した場合におい
一ζ、各コーナ部には多少の凹凸部が形成されることに
なるので、鏡面加重する際には、第９図に示す様に各浅
朋体１３間に甲板体２７を介在させている。Next, FIG. 7 and FIG. 8 show another embodiment, in which case,
The rotating polygon mirror body 5 does not have a tongue portion 17 formed thereon. Therefore, when the shallow body 13 is formed by press working, some unevenness will be formed at each corner, so when applying mirror surface weight, as shown in FIG. A deck body 27 is interposed between each shallow body 13.
ここで、平板体２７とは、平面視において、浅皿体１３
の周壁１４より僅かに小さい六角形とされ、その中央に
は貫孔２８が設けられ、該貫孔２８に支持杆２６が挿入
される。Here, the flat plate body 27 refers to the shallow plate body 13 in plan view.
It has a hexagonal shape that is slightly smaller than the peripheral wall 14, and a through hole 28 is provided in the center of the hexagon, and a support rod 26 is inserted into the through hole 28.
従っ°ζ、コーナ一部に多少の四Ｗ、部を有している場
合も、この甲板体２７により図例の如く積み重ねられた
状態では「ガタッキ」がなくなり、鏡面加二［が行いや
１い。Therefore, even if some corners have some 4W, when the deck bodies 27 are stacked as shown in the illustration, there will be no "backlash" and the mirror surface will not be smooth or 1 stomach.
なお、本発明は上述の実施例に限定され１′、本発明の
要旨を逸脱しない範囲で設計変更自由であり、例えば、
回転多面鏡体５乙こ形成される鏡面１６の数の増減は自
由であり、その場合、浅皿体１３の鏡面形成用部１９の
数を増減ずればよい。また、鏡面加工する際に、積み重
ねる浅皿体１３の数も自由である。It should be noted that the present invention is limited to the above-mentioned embodiments 1', and design changes may be made without departing from the gist of the present invention. For example,
The number of mirror surfaces 16 formed on the rotating polygon mirror body 5 can be freely increased or decreased, and in that case, the number of mirror surface forming portions 19 of the shallow dish body 13 may be increased or decreased. Furthermore, the number of shallow pans 13 to be stacked during mirror finishing is also free.
（発明の効果〕
本発明は上述の如く構成しているので、次に記載する効
果を奏する。(Effects of the Invention) Since the present invention is configured as described above, it produces the following effects.
回転多面鏡体５の重量が小さくなり、モータ負荷容量が
小さくなるので、モータ全体の重さが軽くなると共に、
消費電力も少なくなり、しかも、回転多面鏡体５には無
駄な部位がなくなり材料費を節約でき、コストの低減に
も寄与する。さらに、浅皿体１３はプレス加工にて製造
されるので、その製造は容易であり、生産性に優れてい
る。そして、鏡面１６の仕上げ加工を多数同時に行うこ
とも可能であり、加工時間等を大幅に削減できる。Since the weight of the rotating polygon mirror 5 is reduced and the motor load capacity is reduced, the weight of the entire motor is reduced, and
Power consumption is also reduced, and since there are no unnecessary parts in the rotating polygon mirror 5, material costs can be saved, contributing to cost reduction. Furthermore, since the shallow dish body 13 is manufactured by press working, it is easy to manufacture and has excellent productivity. It is also possible to perform a large number of finishing operations on the mirror surface 16 at the same time, and processing time and the like can be significantly reduced.
第１図は本発明の一実施例を示す断面図、第２図は平面
図、第３図は要部拡大平面図、第４図は要部拡大断面図
、第５図は要部拡大側面図、第６図は鏡面加工状態を示
す断面図、第７図は他の実施例を示す断面図、第８図は
平面図、第９図は鏡面加工状態を示す断面図である。第
１０図は従来例の断面図、第１１図は平面図である。
５・・・回転多面鏡体、】３・・・浅皿体、１４・・・
周壁、１５・・外面。Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a plan view, Fig. 3 is an enlarged plan view of the main part, Fig. 4 is an enlarged sectional view of the main part, and Fig. 5 is an enlarged side view of the main part. 6 is a cross-sectional view showing a mirror-finishing state, FIG. 7 is a cross-sectional view showing another embodiment, FIG. 8 is a plan view, and FIG. 9 is a cross-sectional view showing a mirror-finishing state. FIG. 10 is a sectional view of a conventional example, and FIG. 11 is a plan view. 5... Rotating polygon mirror body, ]3... Shallow dish body, 14...
Peripheral wall, 15...external surface.
Claims (1)
と共に該浅皿体１３の周壁１４外面１５を鏡面加工して
なる回転多面鏡体５を、備えたことを特徴とするレーザ
ビームプリンタ用モータ。1. A laser beam printer characterized in that it is equipped with a rotary polygon mirror body 5 formed by forming a shallow dish body 13 by press working from a flat metal plate and mirror-finishing the outer surface 15 of the peripheral wall 14 of the shallow dish body 13. motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1226255A JP2709636B2 (en) | 1989-08-30 | 1989-08-30 | Motor for laser beam printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1226255A JP2709636B2 (en) | 1989-08-30 | 1989-08-30 | Motor for laser beam printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0387715A true JPH0387715A (en) | 1991-04-12 |
| JP2709636B2 JP2709636B2 (en) | 1998-02-04 |
Family
ID=16842330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1226255A Expired - Fee Related JP2709636B2 (en) | 1989-08-30 | 1989-08-30 | Motor for laser beam printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2709636B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0698517A (en) * | 1992-09-10 | 1994-04-08 | Ricoh Co Ltd | Polygon scanner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348511A (en) * | 1986-08-18 | 1988-03-01 | Copal Co Ltd | Motor for optical scanner |
-
1989
- 1989-08-30 JP JP1226255A patent/JP2709636B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6348511A (en) * | 1986-08-18 | 1988-03-01 | Copal Co Ltd | Motor for optical scanner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0698517A (en) * | 1992-09-10 | 1994-04-08 | Ricoh Co Ltd | Polygon scanner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2709636B2 (en) | 1998-02-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |