Patent ID: 7856683

Claim:
A foldable cot, comprising: a cot frame which comprises two spaced apart longitudinal arms extending in a parallel manner and a plurality of supporting legs pivotally coupling between said longitudinal arms; a fabric made cot panel having four peripheral edges and defining two transverse edge portions and two longitudinal edge portions, wherein said longitudinal arms are coupled with said longitudinal edge portions of said cot panel respectively; and a tensional enhancing arrangement, which comprises: two transverse arms coupled with said transverse edge portions of said cot panel; and four coupling joints rotatably mounted with end portions of said transverse arms to couple with four ends of the longitudinal arms respectively, wherein each of said transverse arms is rotated between a releasing position that said cot panel is loosely supported by said longitudinal arms and said transverse arms, and a setup position that said cot panel is stretched towards said four peripheral edges thereof for enhancing a tension of said cot panel, wherein each of said coupling joints comprises a tubular sleeve coaxially coupled with said respective transverse arm and a guiding track guiding a rotational movement of said transverse arm, such that when each of said transverse arms is outwardly rotated, said two corresponding coupling joints are outwardly slid along said transverse arm to stretch said cot panel at a transverse direction, wherein each of said guiding tracks has a spiral shaped guiding slot indently formed at said transverse arm and a sliding guider protruded from an inner surface of said respective tubular sleeve to slidably engage with said guiding slot, such that when said transverse arm is rotated outwardly, said corresponding coupling joints are slid apart from each other, and when said transverse arm is rotated inwardly along said transverse arm, said corresponding coupling joints are slid towards each other along said transverse arm.