| 摘要 |
MECHANISM BLOCKING THE ROTATION OF ROLLER BLINDS WINDING ROLLER WITH A SPRING DRIVE, SPECIALLY WINDOW A mechanism blocking rotation of a roller blind winding roller, the roller blind winding roller having a spring drive, the spring drive being configured to be coupled to a roller blind holder and a winding roller of the roller blind winding roller, the mechanism comprising: a sleeve (1) having a first cam (2a), a second cam (2b), a third cam (2c) and a fourth cam (2d), each of the cams (2a, 2b, 2c, 2d) being formed on an inner surface of the sleeve; a pocket (2e) formed in the second cam (2b); a roller (3) rotatably seated in the sleeve (1), the roller (3) being configured to rotate relative to the sleeve (1) in a first direction and a second direction, the first direction being opposite to the second direction; a guide (4) formed on a surface of the roller (3), the guide (4) being formed as an oblong groove; and a ball (5) disposed between the guide (4) and the cams (2a, 2b, 2c ,2d), wherein, depending on the direction of rotation of the roller (3) relative to the sleeve (1), the ball (5) moves between the cams (2a, 2b, 2c, 2d) or is blocked in the pocket (2e), and further wherein, when the ball (5) is in the pocket (2e), rotation of the roller (3) relative to the sleeve (1) is blocked. |
