Abstract: A box is made of structural boards having a face plate (2) including a main body portion (2c) that is substantially in one plane and a peripheral portion (2a) surrounding the main body. The boards further include a base plate (3) having integrally formed protrusions. The lower surface of the face plate (2) is attached to and supported on top of the protrusions. A stiffener (4) connects the peripheral portion (2a) of the face plate (2) and the base plate (3) together. At least a part of the stiffener (4) is fixedly connected to the base plate (3), and at least another part of the stiffener (4) is fixedly connected to at least a part of a lower surface of the peripheral portion (2a) of the face plate.

Abstract: A structural board comprises a surface board and a bottom board. The bottom board comprises a first supporting surface and a second supporting surface, and the surface board is fixedly connected on the second supporting surface. The bottom board comprises a plurality of protruding cavities spaced apart from one another. Two end surfaces of each of the plurality of protruding cavities along a protruding direction of the plurality of protruding cavities respectively defines the first supporting surface and the second supporting surface. Each of a plurality of straight ribs is defined by two adjacent, spaced apart protruding cavities of the plurality of protruding cavities. Some of the plurality of straight ribs are connected together in an extending direction, and the plurality of straight ribs with different extending directions extend to be cross-connected to one another to form a polygonal mesh structure that defines the first supporting surface.

Abstract: A dual-purpose folding table comprises a table board and two supporting frames. An upper portion of an outer leg pipe is pivotally connected to a rear portion of a side of the table board. A front portion of a bottom surface of the table board comprises a blocking portion corresponding to an inner leg pipe. The two supporting frames comprise a hook structure. The outer leg pipe is sleeved with a sliding sleeve located above a rotation point of the inner leg pipe and the outer leg pipe. A supporting rod is connected between a middle portion of the side of the table board and the sliding sleeve. Two ends of the supporting rod are pivotally connected to the sliding sleeve and the table board. The sliding sleeve is disposed with a locking member for locking the sliding sleeve to the outer leg pipe.

Abstract: The present disclosure discloses a folding ladder and a top tray thereof. The top tray comprises a fixed plate and a movable plate. The movable plate is disposed on a rear side of the fixed plate and is rotatably connected to the fixed plate, and the movable plate is configured to be rotated to switch between an unfolded position and a folded position. When the movable plate is in the unfolded position, the movable plate is horizontally arranged side-by-side with the fixed plate, and a rear surface of the fixed plate abuts a front surface of the movable plate to maintain the movable plate in a horizontal position and to resist a downward force of gravity. When the movable plate is subjected to an upward pushing force and is rotated to be folded into the folded position, the movable plate abuts the rear side of the fixed plate.

Abstract: The present disclosure discloses mailbox for storing packages comprises a box, at least one tray, and at least one link rod mechanism. The box is a closed box, and the box comprises an upper cover, a bottom board, and a plurality of side boards. A lower portion of one of the plurality of side boards is a movable door configured to be opened and closed. The upper cover is rotatably connected to one of the plurality of side boards and is configured to be upwardly opened. The at least one tray is movably disposed inside the box and is disposed above the movable door, and each of the at least one tray is rotatably connected to at least one of the plurality of side boards. The at least one link rod mechanism is disposed between the at least one tray and the upper cover.

Abstract: A foldable plastic-steel chair comprises a seat board assembly, a backrest, and a metal supporting frame. The seat board assembly and the backrest are connected to the metal supporting frame, and the seat board assembly comprises a seat board. The seat board comprises a surface plate and a surrounding edge connected to a periphery of the surface plate and extending downward, and the seat board is a vacuum-formed plastic board. The seat board assembly further comprises a metal frame abutting a periphery of seat board, and a bottom end of the metal frame is bent outward to form a hook. A lower end portion of the surrounding edge of the seat board is disposed in the hook, and a portion of the metal frame abuts an inner side of the surrounding edge. The hook is fixedly clamped to a lower edge of the surrounding edge.

Abstract: A sofa bed has a seat portion, a backrest portion and a hinge mechanism including a first section, a second section and a third section sequentially and pivotably connected. The first section is fixed to a side of the seat portion. The second section is fixed to a side of the backrest portion. A protruding portion is provided at a position where the first section is connected with the second section. Each of the armrest frames is formed with a slideway for receiving and guiding the protruding portion. An end of the third section opposite to the second section is pivotally connected to the armrest. The first section and the second section are be lockable to place the main body frame into a sofa configuration.

Abstract: A sofa bed has a seat portion, a backrest portion and a hinge mechanism including a first section, a second section and a third section sequentially and pivotably connected. The first section is fixed to a side of the seat portion. The second section is fixed to a side of the backrest portion. A protruding portion is provided at a position where the first section is connected with the second section. Each of the armrest frames is formed with a slideway for receiving and guiding the protruding portion. An end of the third section opposite to the second section is pivotally connected to the armrest. The first section and the second section are be lockable to place the main body frame into a sofa configuration. The sofa bed can be easily switched between sofa and bed positions.

Abstract: A sofa bed has a seat portion, a backrest portion and a hinge mechanism including a first section, a second section and a third section sequentially and pivotably connected. The first section is fixed to a side of the seat portion. The second section is fixed to a side of the backrest portion. A protruding portion is provided at a position where the first section is connected with the second section. Each of the armrest frames is formed with a slideway for receiving and guiding the protruding portion. An end of the third section opposite to the second section is pivotally connected to the armrest. The first section and the second section are be lockable to place the main body frame into a sofa configuration. The sofa bed can be easily switched between sofa and bed positions.

Abstract: A sofa bed has a seat portion, a backrest portion and a hinge mechanism including a first section, a second section and a third section sequentially and pivotably connected. The first section is fixed to a side of the seat portion. The second section is fixed to a side of the backrest portion. A protruding portion is provided at a position where the first section is connected with the second section. Each of the armrest frames is formed with a slideway for receiving and guiding the protruding portion. An end of the third section opposite to the second section is pivotally connected to the armrest. The first section and the second section are be lockable to place the main body frame into a sofa configuration. The sofa bed can be easily switched between sofa and bed positions.

Abstract: A sofa bed has a seat portion, a backrest portion and a hinge mechanism including a first section, a second section and a third section sequentially and pivotably connected. The first section is fixed to a side of the seat portion. The second section is fixed to a side of the backrest portion. A protruding portion is provided at a position where the first section is connected with the second section. Each of the armrest frames is formed with a slideway for receiving and guiding the protruding portion. An end of the third section opposite to the second section is pivotally connected to the armrest. The first section and the second section are be lockable to place the main body frame into a sofa configuration. The sofa bed can be easily switched between sofa and bed positions.

Abstract: A sofa bed has a seat portion, a backrest portion and a hinge mechanism including a first section, a second section and a third section sequentially and pivotably connected. The first section is fixed to a side of the seat portion. The second section is fixed to a side of the backrest portion. A protruding portion is provided at a position where the first section is connected with the second section. Each of the armrest frames is formed with a slideway for receiving and guiding the protruding portion. An end of the third section opposite to the second section is pivotally connected to the armrest. The first section and the second section are be lockable to place the main body frame into a sofa configuration. The sofa bed can be easily switched between sofa and bed positions.

Abstract: A folding stool or a folding table and a folding frame thereof. The folding frame includes a left frame, a right frame, and two middle support legs. A front end of an inner side of the left frame and a front end of an inner side of the right frame are provided with front hinge pieces that are hinged to each other, and a rear end of the inner side of the left frame and a rear end of the inner side of the right frame are provided with rear hinge pieces that are hinged to each other. Tops of the two middle support legs are respectively hinged with the front hinge pieces and the rear hinge pieces. Each of the two middle support legs is provided with a sliding sleeve.

Abstract: The present disclosure a foldable table bench having a folded state and an unfolded state, the foldable table bench comprises a frame, a table board, and a bench board. The frame comprises two supporting rods vertically disposed side by side and back and forth, the frame is disposed with link rod mechanisms corresponding to the bench board, and the link rod mechanisms are respectively connected to bottom portions of the supporting rods. Each of the link rod mechanisms comprises a swing arm and a connecting arm rotatably connected together, the swing arm is supported on ground, the swing arm is rotatably connected to the supporting rod, the connecting arm is disposed with a connecting shaft, the connecting shaft supports a bottom portion of the bench board, and the connecting shaft is disposed along a width direction of the bench board and is rotatably connected to the bench board.

Abstract: A single-layer plastic composite board (20; 30; 40) is disclosed. The single-layer plastic composite board is a two-piece single-layer plastic composite board comprising a single-layer plastic sheet (11; 21) and a stiffener (22; 32), wherein the single-layer plastic sheet (11; 21) has a main body portion (111; 211) and a peripheral portion located around the main body portion; the peripheral portion bends towards the back of the main body portion in a direction perpendicular to the main body portion to form a bent portion (112; 212); and the stiffener (22; 32) is engaged with and fixed to the bent portion (112; 212) of the single-layer plastic sheet (11; 21). The single-layer plastic composite board has advantages such as a simple structure, small thickness, light weight, high strength, low cost and ease of manufacturing, and can be widely used as a cabinet board, a box board, a table board, a drawer board, a seat board and a backrest of a chair, etc.