| 摘要 |
A roller assembly for a horizontally opening retractable screen having a flexible screen with upper and lower toothed edges; upper and lower guide tracks, each 5 track having an elongate retaining channel in which a respective upper and lower edge of the flexible screen is received; the assembly comprising a roller 26 onto which the flexible screen 24 is rolled when the screen is open and from which the flexible screen 24 is unrolled when the screen is closed; and a guide arrangement associated with the lower end of the roller that guides the lower toothed edge 27 10 of the screen 24 into the elongate retaining channel 32 of the lower guide track 18, the guide arrangement defining a guide passage 61 having an exit aperture 64 through which the lower toothed edge 27 passes during unrolling that communicates with the lower guide track retaining channel 32 , wherein the toothed edge 27 is retained from being pulled out of the exit aperture 64as it 15 passes therethrough. 35 -34 |
