Controlling mechanism for cordless blind set
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United States of America Patent
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-
May 17, 2016
Grant Date -
Jun 25, 2015
app pub date -
Mar 27, 2014
filing date -
Dec 20, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A controlling mechanism for a cordless blind set includes a fastening seat, a controlling member, and two driving gears. A coil spring is between the two driving gears each engaged with a driven gear. Each of the driven gears is coupled with a transmission rope passing through the fastening seat and the controlling member and then gets fixed in an upper beam. To operate the blind set, a pushing force is applied to the controlling member to release the transmission ropes. The driving gears are then driven by the coil spring and rotate the driven gears simultaneously, so the driven gears can roll up/release the transmission ropes.
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