JPS60141682U

JPS60141682U - Step motor driven sector opening/closing device

Info

Publication number: JPS60141682U
Application number: JP2680484U
Authority: JP
Inventors: 荻原　倍男; 茂田上; 篠崎　圓男
Original assignee: 株式会社精工舎
Priority date: 1984-02-27
Filing date: 1984-02-27
Publication date: 1985-09-19

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案のステップモータ部の平面図、　　゛第
２図は第１図の断面図、第３図はステップモータで駆動
されるセクタ開閉部の平面図、第４図は第３図の断面図
、第５図は駆動回路より出力信号の波形図と、セクタの
作動線図、第６図はステップモータの動作図である。１・・・・・・、ロータ、５・・・・・・ロータカナ、
６・・・・・・ステータ、７・・・・・・コイル、９・
・・・・・駆動回路、１１・・・・・・地板、１３・・
・・・・セクタ、１４・・・・・・セクタ駆動レバー、
１５・・・・・・セクタ駆動車、１７・・・・・・アイ
ドラー車。Fig. 1 is a plan view of the step motor section of the present invention, Fig. 2 is a sectional view of Fig. 1, Fig. 3 is a plan view of the sector opening/closing section driven by the step motor, and Fig. 4 is Fig. 3. FIG. 5 is a waveform diagram of the output signal from the drive circuit and an operation diagram of the sector, and FIG. 6 is an operation diagram of the step motor. 1...Rota, 5...Rota kana,
6... Stator, 7... Coil, 9.
...Drive circuit, 11... Ground plate, 13...
...Sector, 14...Sector drive lever,
15... Sector drive vehicle, 17... Idler vehicle.

Claims

[Scope of utility model registration request]

(1) It has a plurality of sectors that form a lens aperture and a step motor that can be controlled to rotate in forward and reverse directions, and the step motor and the sector are connected in a pressing manner by a gear train or the like to open and close the sectors. In the shutter for controlling the stroke, the step motor has a rotor made of a rotatably supported permanent magnet magnetized with four poles in the radial direction, and a pair of U-shaped legs. A sector opening/closing device comprising two stators each having a magnetic pole portion facing the outer periphery of the rotor formed at each end thereof, and a coil for exciting the stator.

(2) Utility model registration In the thing described in claim (1), the magnetic pole portions of the stator form a phase relationship of 90° with respect to the rotation center of the rotor, and further, the two stators do not overlap each other on a plane. In this state, one of the magnetic pole portions of the stator is brought close to each other, and the phase relationship of the magnetic pole portions brought close to each other is 45 degrees with respect to the center of the rotor, and the two stators are arranged in a V-shaped relationship. In addition, a sector opening/closing device characterized in that the leg portions having the magnetic pole portions brought close to each other are arranged on the lens opening side.

(3) Utility model registration Claims (1) and (2), wherein the sector opening/closing is characterized in that the coil is attached to a leg portion on a side different from the leg portion having the adjacent magnetic pole portions. Device.