Roller shade assembly

A roller shade assembly comprising:

• a roller tube including a first end opposite a second end, the roller tube defining an opening longitudinally extending between the first and second ends;
• an idler assembly partially received by the roller tube opening at the first end, the idler assembly including an idler housing, an idler member carried by the idler housing, a plunger received by the idler housing, a biasing member configured to apply a biasing force onto the plunger, and a first locking member defined by the idler housing, the first locking member defining an opening, wherein the plunger is configured to slide relative to the idler housing, and the plunger is configured to selectively engage a bracket member, and wherein the idler member is configured to engage the roller tube;
• a spring assembly received by the roller tube, the spring assembly including a housing, a shaft received by the spring assembly housing, a spring member connected at one end to the spring assembly housing and at an opposite end to the shaft, and a second locking member defined by the spring assembly housing, wherein the second locking member is configured to be received by the opening defined by the first locking member to interlock the first and second locking members;
• and
• a spring drive received by the roller tube, the spring drive including a drive shaft, the drive shaft is configured to interlock with the shaft of the spring assembly, and the spring drive is configured to engage the roller tube,
• wherein in response to rotation of the roller tube, the spring drive is configured to rotate with the roller tube, the shaft of the spring assembly is configured to rotate in response to rotation of the spring drive, and the idler member is configured to rotate with the roller tube and relative to the idler housing, and
• wherein in response to rotation of the shaft of the spring assembly, the spring member is configured to apply a counterbalancing force to the roller tube.