| 摘要 |
A vertical blind of the type having louver carriages mounted for movement along a guide channel with a louver carrier mounted on each carriage for rotation about an upright axis and carriage gear mechanism for rotating the louvers in response to turning of an operating shaft that extends lengthwise of the channel. A wand operated mechanism is provided for rotating the louvers in response to raising and lowering a wand and includes a drive lever mounted for pivotal movement about an axis parallel to the axis of the operating shaft and a crank lever rotatable with the shaft and operated by the drive lever to rotate the shaft. A bidirectional detent mechanism on the housing and crank lever releasably retains the shaft in different angularly adjusted positions. The wand includes a tubular member connected to the drive lever through an Lshaped connector so that tubular member extends downwardly from the underside of the channel in all operating positions of the drive lever.
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