JPH0394514U

JPH0394514U -

Info

Publication number: JPH0394514U
Application number: JP271090U
Authority: JP
Priority date: 1990-01-18
Filing date: 1990-01-18
Publication date: 1991-09-26

Description

[Brief explanation of drawings]

第１図及び第２図は本考案の一実施例を示し、
第１図は光偏向器の縦断面図、第２図は第１図の
Ａ−Ａ線断面図である。第３図及び第４図は従来
例を示し、第３図は従来の光偏向器の縦断面図、
第４図は第３図のＢ−Ｂ線断面図である。１……回転軸、ａ……スラスト溝、ｂ……ラジ
アル溝、２……スリーブ、３……上フレーム、４
……側面フレーム、５……下フレーム、６……ミ
ラー、７……メインマグネツト、８……ホールマ
グネツト、９……ステータコア、１０……コイル
、１１……基板、１２……ホール素子、１３，１
４……スラストマグネツト。 1 and 2 show an embodiment of the present invention,
FIG. 1 is a longitudinal sectional view of the optical deflector, and FIG. 2 is a sectional view taken along the line A--A in FIG. 3 and 4 show conventional examples, and FIG. 3 is a vertical cross-sectional view of a conventional optical deflector;
FIG. 4 is a sectional view taken along the line B--B in FIG. 3. 1... Rotating shaft, a... Thrust groove, b... Radial groove, 2... Sleeve, 3... Upper frame, 4
... Side frame, 5 ... Lower frame, 6 ... Mirror, 7 ... Main magnet, 8 ... Hall magnet, 9 ... Stator core, 10 ... Coil, 11 ... Substrate, 12 ... Hall element ,13,1
4...Thrust magnet.

Claims

[Claims for Utility Model Registration] (a) A light deflecting mirror 6, a thrust bearing 1A, and a radial bearing 1B are fixed in order from the top inside the casing formed by the top frame 3, side frame 4, and bottom frame 5. The rotating shaft 1 and the sleeve 2 are housed therein. (b) A sleeve 2 is fixed to the upper end of the side frame 4, and the rotating shaft 1 is loosely inserted into the sleeve 2. (c) Upper end surface 2 of sleeve 2 of thrust bearing 1A
A thrust groove a is stamped on the surface facing A. (d) Inner peripheral surface 2 of sleeve 2 of radial bearing 1B
A radial groove b is stamped on the surface facing B. (e) The main magnet 7 is attached to the lower outer periphery of the rotating shaft 1.
and a Hall magnet 8, and facing these, a stator core 9 around which a coil 10 is wound, and a substrate 11 to which a Hall element 12 is fixed, are each fixed to the inner wall of the side frame 4, thereby forming a motor drive section. do. (f) A core 16 around which a coil B15 is wound is fixed to the center of the lower frame 5, and a thrust magnet 14 is fixed to the lower end of the rotating shaft 1 opposite to the core 16 to form a thrust preload section. A fluid bearing type optical deflector having the above configuration.