Abstract: A rolling curtain mounting housing and an electric rolling curtain are provided. The rolling curtain mounting housing includes a housing body, the housing body is disposed with an accumulator compartment, the accumulator compartment is disposed with an accumulator placement opening. The rolling curtain mounting housing is further disposed with a cover plate, the cover plate is configured to close the accumulator placement opening. The housing body includes an accumulator installation part and a housing extension part connected with each other, the housing extension extends outwards relative to the accumulator installation part, the accumulator installation part is disposed with the accumulator compartment. The cover plate further covers a side surface of the housing extension part on a same side as the accumulator placement opening when the cover plate closes the accumulator placement opening. The provided electric rolling curtain is more convenient to replace the accumulator.

Abstract: Provided is an extendable rail, comprising a main rail and an auxiliary rail arranged in parallel with the main rail, the main rail is shifted in longitudinal direction relative to the auxiliary rail, wherein the main rail is configured with a driving wheel and a first reverse wheel; the auxiliary rail is configured with a second reverse wheel, a first guiding wheel and a second guiding wheel arranged inside; a belt loop with fixed length wraps around the driving wheel, the first reverse wheel, the first guiding wheel, the second reverse wheel, the second guiding wheel, and the driving wheel in turn. The total length of the extendable rail can be adjusted according to the practical needs of consumers by adjusting the length of the overlapped area of the main rail and the auxiliary rail, which provides easy adjustment, high universal applicability and operation performance without size customization.

Abstract: Provided is a telescopic rail, comprising a first rail and a second rail slidably arranged relative to each other, two rotating wheels, a belt, a first and a second traction block. When the rail is put into use, loosen the first and the second fixing device to release the belt from the first and the second traction block, then slide the first and the second rail relative to each other till the total length of the rails is qualified for the installation requirement, then tighten the first and the second fixing device to grip the belt by the first and the second traction block, after that cut off the surplus of belt, thus the length of the telescopic rail could be adjusted on-site without preparatory measurements and customizations, which decreases the workload for measurements and improves the efficiency for installation.