| 摘要 |
A window shade construction for a window having a generally rectangular window frame comprises a pair of flexible cords running substantially from the top to the bottom of the window and attached adjacent respective top and bottom ends of the window frame. Respective top and bottom header members are coupled for slidable movement along the cords. A pleated shade member has a first end coupled to the top header and an opposite end coupled to the bottom header, such that the pleated shade is expandable and collapsible in accordian-like fashion as the top and bottom headers are moved slidably along the cords. A cord tensioning arrangement is provided for engaging and tensioning the cords and for maintaining frictional engagement of the top and bottom headers with the cords for thereby permitting the top and bottom headers to be set at respective desired positions along the cords and for holding the headers in such desired positions and against unintended movement relative to the cords in response to vibration or the like.
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