JPS59167488U

JPS59167488U - motor

Info

Publication number: JPS59167488U
Application number: JP6111083U
Authority: JP
Inventors: 鵜城　達三
Original assignee: キヤノン株式会社
Priority date: 1983-04-23
Filing date: 1983-04-23
Publication date: 1984-11-09

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の固定ヨーク型モータを示す図、第２図（
ま従来の回転ヨーク型モータを示す図、第３図はモータ
の組立過程を示す図、第４図は本考案の一実施例として
のモータを示す図である。１は回転部材に含まれるシャフト、２ａ、　　２ｂ　　
　。は軸受、３は固定部材に含まれるハウジング、４は下台
塵、５は予圧台、７は永久磁石、８はマグネットヨーク
、９は駆動コイル、１０は検出素子、１７は第１の磁性
部材としての固定ヨーク、１８は第２の磁性部材として
の回転ヨークである。Figure 1 shows a conventional fixed yoke type motor, Figure 2 (
FIG. 3 is a diagram showing a conventional rotating yoke type motor, FIG. 3 is a diagram showing an assembly process of the motor, and FIG. 4 is a diagram showing a motor as an embodiment of the present invention. 1 is a shaft included in the rotating member, 2a, 2b
. is a bearing, 3 is a housing included in the fixed member, 4 is a lower base, 5 is a preload base, 7 is a permanent magnet, 8 is a magnetic yoke, 9 is a drive coil, 10 is a detection element, 17 is a first magnetic member The fixed yoke 18 is a rotating yoke as a second magnetic member.

Claims

[Scope of utility model registration request]

a fixed member, a rotating member rotatable with respect to the fixed member, a permanent magnet fixed to the rotating member, and a first magnet fixed to the fixed member and facing the permanent magnet on its outer peripheral side.
a second magnetic member fixed to the rotating member and facing the permanent magnet on its inner peripheral side; and a second magnetic member arranged in a space between the first and second magnetic members and the permanent magnet. and a drive coil fixed to the fixed member.