| CPC B60J 7/141 (2013.01) [F16C 11/04 (2013.01)] | 10 Claims |

|
1. A fully-embedded soft four-fold bed cover for a pickup truck, includes a large frame and a layer of leather (1) covering the large frame, the large frame includes a front rail frame (3), a large rotating shaft assembly (4), a medium rotating shaft assembly (6), a small rotating shaft assembly (7) and a tail rail frame (8);
the large rotating shaft assembly (4) and the front rail frame (3), the medium rotating shaft assembly (6) and the large rotating shaft assembly (4), the small rotating shaft assembly (7) and the medium rotating shaft assembly (6), the tail rail frame (8) and the small rotating shaft assembly (7) are all connected by a side rail (10);
the medium rotating shaft assembly (6) includes an intermediate joint (61) having two ends and two side joints (63), the two side joints (63) are rotatably connected to the two ends of the intermediate joint (61) respectively, one end of the two ends of the intermediate joint (61) is provided with a convex portion (65), the other end of the two ends of the intermediate joint (61) is provided with a rotating concave portion (62), one of the side joints (63) is provided with the rotating concave portion (62) corresponding to the convex portion (65), the other side joint (63) is provided with the convex portion (65) corresponding to the rotating concave portion (62), an end of the convex portion (65) is arc-shaped, both sides of the rotating concave portion (62) are circular arcs, one side of the intermediate joint (61) and one side of the side joint (63) are inclined surfaces, the inclined surfaces are provided with an avoidance portion (634), the avoidance portion (634) is arranged corresponding with the convex portion (65).
|