Elevator door stopping device
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United States of America Patent
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-
Oct 10, 2017
Grant Date -
Jan 14, 2016
app pub date -
Sep 12, 2013
filing date -
Feb 27, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An elevator door stopping device which can prevent that elevator door is closed by itself when power supplied to a motor for opening and closing the elevator door is interrupted, an improvement of the elevator door stopping device characterized in that a first magnetic body is fixed on a shaft rotating in interlock with opening and closing of the elevator door so as to generate a magnetic force in a radial direction perpendicular to the shaft, and a second magnetic body is fixed on a fixed face spaced apart from the first magnetic body at a predetermined interval in the radial direction in such a manner that the second magnetic body has the opposite pole to the first magnetic body, so that a magnetic force is generated between the first magnetic body and the second magnetic body in the radial direction perpendicular to the shaft.
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