JPH0461448U - - Google Patents
Info
- Publication number
- JPH0461448U JPH0461448U JP10445090U JP10445090U JPH0461448U JP H0461448 U JPH0461448 U JP H0461448U JP 10445090 U JP10445090 U JP 10445090U JP 10445090 U JP10445090 U JP 10445090U JP H0461448 U JPH0461448 U JP H0461448U
- Authority
- JP
- Japan
- Prior art keywords
- rotor magnet
- rotating shaft
- fixed
- hollow rotating
- polygon scanner
- 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
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000005415 magnetization Effects 0.000 claims 1
- 229910001172 neodymium magnet Inorganic materials 0.000 claims 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
第1図は実施例に係るポリゴンスキヤナの中空
回転体の要部断面図、第2図は第1図に中空回転
体に外嵌されるロータマグネツトの分解断面図、
第3図は従来例に係るポリゴンスキヤナの要部断
面図である。
1……中空回転軸、2……ポリゴンミラー、3
……ミラー押さえ、6a,6b,6c……マグネ
ツト、8……スロツト鉄心(ステータヨーク)、
8c……コイル部、9……回転体、10……固定
軸、10a,10b……ヘリングボーン溝、13
……ハウジング、21,22……押さえリング(
リング部材)、22……ロータマグネツト、22
a,22b……マグネツト、A,B1,B2,C
……接着面。
FIG. 1 is a sectional view of a main part of a hollow rotating body of a polygon scanner according to an embodiment, and FIG. 2 is an exploded sectional view of a rotor magnet fitted onto the hollow rotating body in FIG. 1.
FIG. 3 is a sectional view of a main part of a conventional polygon scanner. 1...Hollow rotating shaft, 2...Polygon mirror, 3
...Mirror holder, 6a, 6b, 6c...Magnet, 8...Slot core (stator yoke),
8c... Coil part, 9... Rotating body, 10... Fixed shaft, 10a, 10b... Herringbone groove, 13
...housing, 21, 22...holding ring (
ring member), 22... rotor magnet, 22
a, 22b...Magnet, A, B1, B2, C
...Adhesive surface.
Claims (1)
体と、筺体側から立設された固定軸と、固定軸に
回転可能に外嵌された中空回転軸と、中空回転軸
に固定されたポリゴンミラーと、上記ステータと
対となつて一つのモータを構成する前記中空回転
軸に固定されたロータマグネツトと、中空回転軸
を回転時に非接触でラジカル方向およびアキシヤ
ル方向に支持する軸受とを備えたポリゴンスキヤ
ナにおいて、ロータマグネツトが非磁性材からな
るリング部材によりロータマグネツトの上下の端
面を接着面として接着され、中空回転軸に固着さ
れていることを特徴とするポリゴンスキヤナ。 (2) ロータマグネツトがNd−Fe−B系のボ
ンド磁石からなるとともに、複数のマグネツトが
軸方向に積層されて接着されていることを特徴と
する請求項1記載のポリゴンスキヤナ。 (3) ロータマグネツトの着磁もしくはステータ
側のヨークのスロツトにスキユーがかけられてい
ることを特徴とする請求項1記載のポリゴンスキ
ヤナ。[Claims for Utility Model Registration] (1) A housing holding a stator with a coil mounted thereon, a fixed shaft erected from the housing side, a hollow rotating shaft rotatably fitted around the fixed shaft, and a hollow A polygon mirror fixed to the rotating shaft, a rotor magnet fixed to the hollow rotating shaft which pairs with the stator to form one motor, and a rotor magnet fixed to the hollow rotating shaft that rotates the hollow rotating shaft in a non-contact manner in the radical direction and the axial direction. The polygon scanner is equipped with a bearing that supports the rotor magnet, and the rotor magnet is fixed to the hollow rotating shaft by a ring member made of a non-magnetic material, with the upper and lower end surfaces of the rotor magnet being bonded as adhesive surfaces. Polygon scanner. (2) The polygon scanner according to claim 1, wherein the rotor magnet is composed of a bonded Nd-Fe-B magnet, and a plurality of magnets are stacked and bonded in the axial direction. (3) The polygon scanner according to claim 1, wherein the magnetization of the rotor magnet or the slot of the yoke on the stator side is skewed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10445090U JPH0461448U (en) | 1990-10-05 | 1990-10-05 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10445090U JPH0461448U (en) | 1990-10-05 | 1990-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0461448U true JPH0461448U (en) | 1992-05-26 |
Family
ID=31849727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10445090U Pending JPH0461448U (en) | 1990-10-05 | 1990-10-05 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0461448U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021101601A (en) * | 2019-12-24 | 2021-07-08 | 日立金属株式会社 | Rotor using annular bonded magnet, and method for manufacturing rotor |
-
1990
- 1990-10-05 JP JP10445090U patent/JPH0461448U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021101601A (en) * | 2019-12-24 | 2021-07-08 | 日立金属株式会社 | Rotor using annular bonded magnet, and method for manufacturing rotor |