| 摘要 |
<p>A lifting-type anti-theft shutter consists of a window frame with a hollow cavity, movable fences and shutter slats (77). A lifting device, a slat rotating device and spacing positioning devices are installed in the hollow cavity of the frame, and two ends of a movable fence rod (76) are hitched or screwed respectively on lifting screw rods (21, 25) in the two sides (12, 14) of the frame. The slat (77) connects a spring eye sleeve (71) of an edge with an ear sleeve (72) on the fence rod (76) through a pin (74), and the spacing positioning devices are mounted at the junction (714) of an unthreaded journal on the upper end of the lifting screw rods (21, 25) and a thread portion of the lifting screw rods. A self-locked lifting device for fence, a self-locked manual and power-driven slat rotating device, a firm and beautiful fence hinge, and a lock-up device can be designed respectively through separating the fence from the shutter slat (77).</p> |
