Idler

A length adjustable fitting for blind systems, comprising:

• a housing and a drive member fitted to said housing;
• a core component including a core member shaped for engaging a drive portion of said drive member, the core component including a support portion shaped for engaging a support member for supporting said fitting;
• wherein, the selective adjustment of the drive member relative to the housing moves the core member along an axis to a different position relative to the housing, wherein at each said position, the drive member engages the core member to resist movement of the core member along the axis from said position relative to said housing;
• wherein, said drive portion includes a helically shaped path for engaging a guide portion of said core member;
• wherein, at each said retaining position, said drive member engages said core member at a different relative position to resist movement of said core member along said axis relative to said drive member in the absence of rotation of said drive member relative to said housing;
• and,
• wherein said drive member includes one or more of the following:
• i) a wall portion surrounding a hollow core shaped to define said helically shaped path for engaging a guide member projecting from said core member;
• and
• ii) a first serrated surface for engaging a second serrated surface formed as part of said guide portion, said second serrated surface having a shape corresponding to said first serrated surface.