Abstract: The present disclosure provides a treadmill rack, including a mounting frame, an adjusting board and a supporting board, where the mounting frame includes a first beam, a second beam, a third beam and a fourth beam, the first beam is parallel to the third beam, the second beam is parallel to the fourth beam, the adjusting board is rotatably connected to the third beam and is configured to be rotated to abut against the first beam, the supporting board is detachably connected with the adjusting board, the first beam, the second beam, the third beam and the fourth beam enclose a receiving cavity, the supporting board is configured to be accommodated in the receiving cavity after being detached from the adjusting board.

Abstract: The present disclosure provides a retractable and foldable table leg structure, including a frame and a supporting leg. The frame defines a receiving cavity. The supporting leg includes a first supporting rod, a second supporting rod, a third supporting rod and a fourth supporting rod. The third supporting rod is slidably connected with the first supporting rod. The fourth supporting rod is slidably connected with the second supporting rod. The first supporting rod and the second supporting rod are rotatably connected with the frame, respectively. The supporting leg is configured to rotate to be received within the receiving cavity, and is adjustable in height by sliding the third supporting rod and the fourth supporting rod.

Abstract: A sofa shelf includes a main body, a support member, a first clamping member, and a second clamping member. The main body is provided with a first surface and a second surface opposite to the first surface. The main body is further provided with a receiving groove located on the first surface. The support member is disposed on the first surface and is movably connected to the main body. The support member is provided with a placing groove arranged obliquely relative to the horizontal plane. Both the first clamping member and the second clamping member are disposed on the second surface. The first clamping member and the second clamping member are rotatably connected to the main body, respectively. Rotation directions of the first clamping member and the second clamping member are opposite.