JPH02149923U

JPH02149923U -

Info

Publication number: JPH02149923U
Application number: JP6068289U
Authority: JP
Priority date: 1989-05-25
Filing date: 1989-05-25
Publication date: 1990-12-21

Description

[Brief explanation of drawings]

第１図は本考案の実施例に係るステツプモータ
によつて駆動される機構の一例である絞り装置の
平面図、第２図は本考案の１実施例に係るステツ
プモータを駆動源とする遮光羽根駆動機構の全体
的な断面図、第３図は第１図に示すステツプモー
タの部分を示す平面図、第４図は第２図の変形例
を示す断面図、第５図は従来のステツプモータを
駆動源とする駆動機構の断面図。１４……プレート部材、１１２……２段ギア、
５１，５２……絞り羽根、６０……出力ピニオン
、６１……ケース、６２……ピン、６３……ロー
タ、６４……マグネツト部、６５……ステータ。 FIG. 1 is a plan view of a diaphragm device which is an example of a mechanism driven by a step motor according to an embodiment of the present invention, and FIG. 2 is a shading device using a step motor as a driving source according to an embodiment of the present invention. 3 is a plan view showing the step motor shown in FIG. 1, FIG. 4 is a sectional view showing a modification of FIG. 2, and FIG. 5 is a sectional view of the conventional step motor. FIG. 3 is a sectional view of a drive mechanism using a motor as a drive source. 14...Plate member, 112...Two-stage gear,
51, 52...Aperture blade, 60...Output pinion, 61...Case, 62...Pin, 63...Rotor, 64...Magnet section, 65...Stator.

Claims

[Claims for Utility Model Registration] In a light-shielding blade drive device using a step motor as a drive source, the rotation of the output pinion of a step motor capable of forward and reverse rotation is transmitted to the light-shielding blade to open and close the light-shielding blade. The step motor includes a plate member to which one or more gear train elements for transmitting the rotation of the output pinion to the light shielding blades are pivoted, and the step motor is connected to a side of the plate member to which the gear train elements are pivoted. a case member having an inner surface affixed to an opposite surface and substantially parallel to the plate member; a pin member that stands vertically and whose tip passes through the plate member; and a hole in the center into which the pin member is inserted;
An output pinion is rotatably supported around the pin member, and an output pinion passing through the plate member is disposed at the tip thereof, and a magnetic pole is disposed at the outer periphery of the portion housed inside the case member. and a stator that is disposed inside the case member and rotates the rotor by sequentially changing the direction of a magnetic field acting on the rotor in response to a pulse signal, the stator passing through the plate member. A light-shielding vane drive using a step motor as a drive source, characterized in that the output pinion is meshed with a first-stage gear train element among one or more gear train elements pivotally attached to the plate member. Device.