| 摘要 |
A container comprises two case bodies and an internal hinge arrangement which comprises two sockets holders formed on the two hinging edges of the case bodies and a hinge connector comprising a protective cover and two axis shafts provided for inserting into the socket holders, so as to form two pivot axles along the hinging edges of the case bodies, such that the two case bodies are pivotally connected together. The internal hinge arrangement provides a secure folded position to the case bodies of the container because the hinge connector is not visible or reachable when the container is in a folded position. The internal hinge arrangement provides a double axial folding and unfolding motion of the container, such that an unfolding angle between the container and the container cover can reach to at least 180°, providing a higher durability to the internal hinge arrangement and the container. By incorporating an angle retention arrangement to the internal hinge arrangement, the largest unfolding angle of the two case bodies can be limited. The angle retention arrangement can also control the folding and unfolding motion of the case bodies, assisting the user to use less energy to open up the case bodies.
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