Portable suitcases

1 . A portable suitcase, comprising:

a case, wherein side walls of the case and a bottom wall of the case enclose a first accommodation space, tops of the side walls enclose a first opening, and the first opening is in communication with the first accommodation space;

a case lid, wherein one side of the case lid is rotatably connected to the top of one of the side walls of the case such that the case lid is capable of opening and closing the first opening;

a box, wherein the box comprises box side walls, and the box side walls include two opposing side walls, a top of the box forms a second opening, the box being rotatably connected to an inner side of the side walls of the case; and

a cover plate, including a first side and a second side, wherein the first side is opposite to the second side, the first side is rotatably connected to the case lid, and both ends of the second side are slidably connected to tops of inner sides of the two opposing side walls, such that the cover plate is capable of opening and closing the second opening;

wherein during closing the first opening, the cover plate is moved to the top of the box to close the second opening, and the box is moved through the first opening into the first accommodation space; and

during opening the first opening, the box is moved through the first opening to an outside of the first accommodation space, and the cover plate is moved to open the second opening.

2 . The portable suitcase of claim 1 , further comprising:

two linear slide grooves disposed oppositely, which are respectively recessed at the tops of the two opposing inner side walls of the box; and

two sliders, protruding from the both ends of the second side of the cover plate, wherein the two sliders are respectively snapped into the two linear slide grooves;

wherein during opening or closing the second opening, the first side of the cover plate is rotated relative to the case lid, and the second side of the cover plate slides along an extension direction of the linear slide grooves.

3 . The portable suitcase of claim 1 , further comprising:

at least one limiting block, wherein when the second opening is opened, the at least one limiting block protrudes from a top of a side wall of the cover plate proximate to the box; and

at least one limiting slot or limiting hole, wherein when the second opening is opened, the at least one limiting slot or limiting hole is disposed at a top of one side of the two opposing side walls away from the cover plate;

wherein when the second opening is closed, the limiting block is snapped correspondingly into the limiting slot or the limiting hole.

4 . The portable suitcase of claim 1 , wherein

the box is located above the case when the second opening is opened;

a rotatable connection between the first side of the cover plate and the case lid is located above a rotatable connection between the case lid and the case, and the second side of the cover plate slides to one side of the two opposing side walls proximate to the case lid; and

a bottom surface of the cover plate and a surface of the top of the box form an included angle.

5 . The portable suitcase of claim 1 , wherein the box includes:

a box bottom plate;

wherein the box side walls are vertically connected to an edge of the box bottom plate, the box side walls and the box bottom plate surround to form a second accommodation space; and

at least one first partition, which is connected to the box bottom plate and/or the box side walls, such that the second accommodation space is separated into at least two subspaces.

6 . The portable suitcase of claim 5 , wherein

a lower surface of the second side is provided with at least one block, the block being inverted U-shaped, the block being correspondingly connected to the first partition, such that the block is snapped to a top of the first partition.

7 . The portable suitcase of claim 1 , further comprising:

at least two linkage arms, wherein one end of each of the linkage arms is rotatably connected to the box, and the other end of each of the linkage arms is rotatably connected to the case;

when the first opening is opened, the linkage arms located on the same side of the box are parallel to each other.

8 . The portable suitcase of claim 1 , wherein the cover plate includes:

a flat plate;

a stiffener, disposed on at least one surface of the flat plate; and

a limiting plate, which is vertically connected to a lower surface of the flat plate, the limiting plate being disposed at the edge of a side of the flat plate close to the case;

when the second opening is closed, the limiting plate is abutted against an outer wall of the box.

9 . The portable suitcase of claim 1 , further comprising:

a second partition, which is disposed vertically within the first accommodation space along a height direction of the case, and connected to the inner side of the side walls of the case;

wherein the box includes a first partition, and a center surface of the second partition is perpendicular to a center surface of the first partition, such that the first accommodation space is separated into an avoidance space and a storage space.

10 . The portable suitcase of claim 9 , wherein the box is rotatably connected to a connection between the avoidance space and the storage space, when the first opening is opened, the box is located above the avoidance space, and when the first opening is closed, the box is located inside the storage space.

11 . The portable suitcase of claim 9 , further comprising:

at least one third partition, which is disposed in parallel in the storage space and connected to the bottom wall of the case, such that the storage space is separated into at least two bill compartments; and

at least one set of compression assemblies, which are rotatably connected to the second partition, the compression assemblies being disposed within the bill compartments for compressing bills.

12 . The portable suitcase of claim 11 , wherein each of the at least one set of compression assemblies includes:

a pressing arm, a head end of which is rotatably connected to the second partition, and a tail end of which is pressed against the bottom wall of the case; and

a reset member, which is disposed between the pressing arm and the second partition, one end of which is connected to the pressing arm, and the other end of which is connected to the second partition.

13 . The portable suitcase of claim 12 , wherein the pressing arm is plate-shaped, and the tail end of the pressing arm includes a pressing portion, such that the pressing portion is capable of fitting the bottom wall of the case; or

the pressing arm is tubular, and the tail end of the pressing arm is bent toward a direction away from the case to form a lifting portion.

14 . The portable suitcase of claim 9 , wherein

the box side walls are hinged to the inner side of the side walls of the case by at least one linkage arm, the second partition being provided with an avoidance groove, so that when the at least one linkage arm pulls the box into the storage space, at least one the linkage arm is capable of passing through the avoidance groove to extend into the storage space.

15 . The portable suitcase of claim 14 , wherein

the box has at least one groove in the box side walls, at least a portion of the linkage arm being rotatably disposed in the groove, the groove comprising a first groove and a second groove, the first groove being disposed along a height direction of the box, the second groove being connected to the bottom end of the first groove, and disposed at an angle in the direction of the avoidance space.

16 . The portable suitcase of claim 14 , wherein

a bottom end of the at least one linkage arm forms a bent portion toward the first accommodation space of the case.

17 . The portable suitcase of claim 1 , wherein

a front of the box side walls has an arc-shaped cross-section along an axial direction, and a concave surface of the arc-shaped cross-section is oriented toward an interior of the box.

18 . The portable suitcase of claim 1 , wherein

the case lid is recessed toward the case to form a mounting groove, and the case lid is provided with a handle and disposed within the mounting groove.