DRIVE CONTROL DEVICE FOR MOTOR-OPERATED SHUTTER

PURPOSE:To facilitate regulation of a stop position by a method wherein the upper limit working position of a rotary shaft on which switch dogs for determining an upper and lower limit position for opening and closing of a door are screwed for mounting forms a small non-screw part, and the switch do...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HASHIMOTO KENJIRO, MASHIGE TAKUO
Format:	Patent
Sprache:	eng
Schlagworte:	DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL FIXED CONSTRUCTIONS FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES LADDERS
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Beschreibung
Zusammenfassung:	PURPOSE:To facilitate regulation of a stop position by a method wherein the upper limit working position of a rotary shaft on which switch dogs for determining an upper and lower limit position for opening and closing of a door are screwed for mounting forms a small non-screw part, and the switch dogs are pressed against the screw part side through the force of a spring. CONSTITUTION:A hoisting limit switch 19 and a lowering limit switch 20 are mounted to a drive device 2 of a shutter driving wheel board 6. Upper and lower limit switch dogs 16 and 17 are screwed for mounting on a screw shaft 13 interlocking with rotation of the wheel board 6. The portion above an upper limit working position of a screw shaft 13 forms a non-screw part having size lower than the root size of a thread, and a spring 18 through the force of which the upper switching dog 16 is pressed against the screw part side is provided. During lowering of the shutter, the switch dog 16 is immediately screwed on for joining. This constitution simplifies regulation of the stop position of the shutter.