| 摘要 |
A three-section synchronous concealed slide rail includes a mobile rail, a middle rail, a fixed rail and a damping mechanism, wherein an upper rack and an upper roller cage with an roller are installed between the mobile rail and the middle rail, a split-type lower roller cage with a roller is installed between the middle rail and the fixed rail, a surface of which is provided with a rack; a gear assembly is meshed between the upper rack and the lower roller cage and used for controlling synchronous or staggered operation of the mobile rail and middle rail according to the intensity of acting force, and the damping mechanism is installed on the fixed rail. The gear A and gear B of the gear assembly are tightly matched and assembled by polygonal column and polygonal hole. When the acting force is less than a certain value, synchronous operation is realized. When the acting force is more than a certain value, the polygonal hole is magnified, two gears are rotated in sliding, and the mobile rail and the middle rail are operated separately. The gear assembly is ensured to be matched with the upper and lower racks on the right position, so that the slide rail also can be used sequentially, and the racks and gears are difficult to be damaged. |
