Rotating shaft structure and a pickup truck rear cover equipped therewith

A rotating shaft structure, comprising:

• a basic part provided with at least one rotation space along a horizontal direction, wherein a path is formed inside the rotation space, a limiting body is arranged at an opening of the rotation space, wherein the limiting body comprises an arc body and a transition body, wherein a contact surface is formed between the arc body and the transition body;
• a rotating part provided with a rotating body, with a contact body on a side of the rotating body facing the contact surface,
• wherein the rotating body moves along the path inside the rotation space, enabling relative angular displacement between the rotating part and the basic part, and
• when the rotating part and the basic part are in a horizontal state, the contact body clamps the contact surface to restrict a connection state between the basic part and the rotating part.