SPRING-ASSISTED CORDLESS ROLLER SHADE WITHOUT CLUTCH SYSTEM

摘要

A spring-assisted cordless roller shade without clutch system includes a tubular body defining an internal space. A shade is wound on the tubular body. The internal space has a first section and a second section. In each of the first and second sections are mounted a connector, a central shaft assembled with the connector, a fixing member connected with the central shaft and a subsidiary shaft disposed on the fixing member. An elastic member is disposed between the connector and the central shaft to provide a frictional force. A rotational member and a torsion spring are mounted on the subsidiary shaft of the first section and rotatable along with the tubular body. A constant force belt spring module is assembled with the subsidiary shaft of the second section. When the operational force applied to the shade disappears, the shade is immediately located.

主权项

1. A spring-assisted cordless roller shade without clutch system comprising:
a tubular body defining an internal space, the internal space being defined with a first section and a second section, connectors being respectively mounted in the first and second sections, the connectors being assembled with base seats, whereby the connectors and the base seats are rotatable along with the tubular body, each base seat defining a chamber, a central shaft being mounted in the chamber, the central shaft including a head section and a shaft section connected with the head section, the shaft section having a free end extending out of the base seat to securely assemble with a fixing member, the fixing member being formed with a shaft hole in which a subsidiary shaft is pivotally fixed, the subsidiary shaft of the first section protruding from the fixing member to assemble with a rotational member, the rotational member being rotatable along with the tubular body, a torsion spring being disposed between the fixing member and the rotational member of the first section, the subsidiary shaft of the second section protruding from the fixing member to assemble with a constant force belt spring module.