Restriction device for restricting wires from being pulled out from shade
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United States of America Patent
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Jun 12, 2018
Issued Date -
N/A
app pub date -
Sep 26, 2016
filing date -
Apr 25, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A window shade includes a top box, a bottom bar and a shade connected between the top box and the bottom bar. Multiple wire units extend through holes of the shade. Each wire unit includes two connection wires and multiple cross wires which are spaced and transversely connected between the connection wires. Each wire unit has an operation wire for controlling the shade, the operation wire alternatively extends between the cross wires along the longitudinal direction of the shade. The holes in the shade each include two passages formed at two inner ends thereof. The connection wires extend through the two passages. At least one tooth extends from each of two insides of each of the holes and located between the two passages. When the wire unit is pulled outward, the cross wires are restricted by the teeth so that the operation wire is restricted from being pull out.
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Family
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Cited Art Landscape
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