Stacking system

Abstract

The utility model relates to a stacking system which comprises a plurality of stacking pieces, the stacking pieces comprise a first stacking piece and a second stacking piece, and the first stacking piece is provided with a first matching structure; the first stacking piece is provided with a first matching structure, the second stacking piece is provided with a second matching structure matched with the first matching structure, and one position of the first stacking piece and one position of the second stacking piece are limited through matching of the first matching structure and the second matching structure, so that the first stacking piece and the second stacking piece are stacked up and down. According to the stacking system, the multiple stacking pieces can be connected in an up-and-down stacking mode and can be carried and moved at the same time, stability can be kept in the carrying and moving process, slippage and separation are not likely to happen, the carrying time is saved, and meanwhile the storage space can be better utilized during storage.

Description

Technical Field

[0001] The present application relates to the technical field of tools, and in particular to a stacking system. Background Art

[0002] In daily life, storage tools, cleaning tools, etc. often need to be used in combination. Users need to make multiple trips to carry them out from the storage room or take them out, and after use, they need to be transferred to the storage room or the utility room one by one for storage and tidying up, which is very time-consuming and laborious. Especially when the cleaning tools and storage tools are large objects, the use and tidying-up process will be more inconvenient. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a stacking system.

[0004] A stacking system, the stacking system includes a plurality of stacking members, the plurality of stacking members include a first stacking member and a second stacking member, wherein, the first stacking member is provided with a first matching structure; the second stacking member is provided with a second matching structure adapted to the first matching structure, and one place of the first stacking member and the second stacking member is restricted by the cooperation of the first matching structure and the second matching structure, so that the first stacking member and the second stacking member are stacked up and down.

[0005] In one embodiment, the stacking member includes a first connecting body and a second connecting body, the first connecting body can at least form the upper surface and / or the lower surface of the stacking member; the second connecting body is connected to the first connecting body to form an accommodating space of the stacking member, and the material of the second connecting body is different from that of the first connecting body.

[0006] In one embodiment, the first connecting body is a plastic part, and the second connecting body is a metal part.

[0007] In one embodiment, at least one of the stacking members is a vacuum cleaner.

[0008] In one embodiment, the vacuum cleaner includes a box-shaped vacuuming main body and a vacuuming pipe fitting detachably installed on the vacuuming main body, the top of the vacuuming main body is provided with the first matching structure and / or the bottom of the vacuuming main body is provided with the second matching structure, and at least a part of the vacuuming pipe fitting can be wound around the outer peripheral wall of the vacuuming main body or received into the vacuuming main body.

[0009] In one embodiment, the vacuuming main body includes a box-shaped housing, a vacuuming module and an energy storage module, the vacuuming module and the energy storage module are both installed in the housing, and the energy storage module is electrically connected to the vacuuming module.

[0010] In one embodiment, the stacking system has a locked state, in which the first stack and the second stack can be locked in three directions of X, Y, and Z under the pressure of the upper one.

[0011] In one embodiment, the first mating structure includes a first elastic member and a first movable member. The first elastic member can act elastically on the first movable member. When the second stack is stacked on the first stack, the first movable member can move on the first stack under the pressure of the second stack. When the second stack is stacked in place, the first movable member can be elastically engaged with the second mating structure under the elastic action of the first elastic member, so as to realize the locked state through the pressure of the second stack.

[0012] In one embodiment, the first movable member includes a base and a first engaging portion provided on the base. The base is slidably connected to the first stack. The second mating structure includes a second engaging portion provided on the second stack, and the second engaging portion is provided with a slot. In the locked state, the first engaging portion can be inserted into the slot under the action of the first elastic member; or,

[0013] The first movable member includes a rotating seat and a first engaging portion provided on the rotating seat. The rotating seat is rotatably connected to the first stack. The second mating structure includes a second engaging portion provided on the second stack, and the second engaging portion is provided with a slot. In the locked state, the first engaging portion can be inserted into the slot under the elastic action of the first elastic member.

[0014] In one embodiment, the stacking system further includes an unlocked state, in which the second stack can be separated from the first stack. The stacking system further includes a positioning component. When the positioning component is in the positioning position, the stacking system forms the unlocked state;

[0015] The positioning component includes a positioning member, the positioning member is rotatably connected to the second stack, the positioning member has a first arm and a second arm with opposite rotation directions, the first arm can be rotated to the positioning position under the action of an external force, and drive the second arm to act on the first movable member in the reverse direction, so that the first movable member rotates away from the second mating structure, and further switches the stacking system from the locked state to the unlocked state.

[0016] Compared with the related art, the multiple stacked members of the stacking system provided by the present application can be stacked and connected vertically, can be carried and moved simultaneously, and can remain stable during the carrying and moving process, are not easily slipped and separated, saving the carrying time, and can also make better use of the storage space during storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Structural schematic diagram of the stacking system in the first embodiment provided by the present application;

[0019] Figure 2 For Figure 1 Structural schematic diagram of the stacking system from another perspective;

[0020] Figure 3 For the enlarged structural schematic diagram of the stacking system at position A in the locked state Figure 2 ;

[0021] Figure 4 For the enlarged structural schematic diagram of the stacking system at position A in the unlocked state Figure 2 ;

[0022] Figure 5 For Figure 1 Structural schematic diagram of the first stacked member of the stacking system;

[0023] Figure 6 For the enlarged structural schematic diagram of the stacking system at position B in the locked state Figure 1 ;

[0024] Figure 7 For the enlarged structural schematic diagram of the stacking system at position B in the unlocked state Figure 1 ;

[0025] Figure 8 For the enlarged schematic diagram of a partial structure of the stacking system at position B in the unlocked state Figure 1 ;

[0026] Figure 9 For Figure 1 Structural schematic diagram of the second stacked member of the stacking system;

[0027] Figure 10 For Figure 9 Enlarged structural schematic diagram of the stacking system at position C;

[0028] Figure 11 is Figure 5 a schematic structural diagram of the first stacking member in

[0029] Figure 12 is Figure 11 a schematic cross-sectional structural diagram of the first stacking member at A-A in

[0030] Figure 13 is the Figure 12 magnified structural diagram at D in

[0031] Figure 14 is the Figure 12 magnified structural diagram at D in

[0032] Figure 15 is Figure 1 a schematic structural diagram of the stacking system in

[0033] Figure 16 is Figure 15 a schematic cross-sectional structural diagram of the first stacking member at B-B in

[0034] Figure 17 is the Figure 16 magnified structural diagram at E in

[0035] Figure 18 is the Figure 16 magnified structural diagram at E in

[0036] Figures 19 - 21 is Figure 5 a schematic structural diagram of the first moving member in different perspectives in

[0037] Figures 22 - 24 is Figure 5 a schematic structural diagram of the positioning component in different perspectives in

[0038] Figure 25 a schematic structural diagram of the tower spring in the positioning component

[0039] Figure 26 a partial structural diagram of the stacking system in the second embodiment provided by the present invention

[0040] Figure 27 a partial structural diagram of the stacking system in the second embodiment provided by the present invention

[0041] Figure 28 a partial structural diagram of the stacking system in the third embodiment provided by the present invention

[0042] Figures 29 - 32 is Figure 28Schematic diagram of the enlarged structure at F during the process of the stacking system switching from the reset state to the locked state;

[0043] Figure 33 is Figure 32 Schematic diagram of the enlarged structure at G in;

[0044] Figure 34 is Figure 28 Schematic diagram of the enlarged structure at F when the stacking system is in the unlocked state;

[0045] Figure 35 Partial structure schematic diagram of the stacking system in the fourth embodiment provided by the present invention;

[0046] Figure 36 is Figure 35 Schematic diagram of the enlarged structure at H in the stacking system;

[0047] Figure 37 is Figure 35 Schematic diagram of the structure of the second stacking member in;

[0048] Figure 38 is Figure 37 Schematic diagram of the enlarged structure at I of the second stacking member in;

[0049] Figure 39 is Figure 35 Schematic diagram of the positioning component, the first movable member, the first elastic member and the seat limiting member in;

[0050] Figure 40 is Figure 39 Schematic diagram of the positioning component, the first movable member, the first elastic member and the seat limiting member from another perspective;

[0051] Figure 41 is Figure 39 Schematic diagram of the positioning member in;

[0052] Figure 42 is Figure 39 Schematic diagram of the first movable member in;

[0053] Figure 43 is Figure 39 Schematic diagram of the seat limiting member in;

[0054] Figure 44 Partial structure schematic diagram of the stacking system in the fifth embodiment provided by the present invention;

[0055] Figure 45 Partial structure schematic diagram of the stacking system in the seventh embodiment provided by the present invention;

[0056] Figure 46 is Figure 45Schematic diagram of the structure of the stacking system from another perspective;

[0057] Figure 47 is Figure 46 Schematic diagram of the sectional structure of the stacking system at C-C;

[0058] Figure 48 is Figure 47 Enlarged schematic diagram of the structure at J in the

[0059] Figure 49 is Figure 45 Schematic diagram of the structure of the stacking system from another perspective;

[0060] Figure 50 is Figure 45 Schematic diagram of the bottom structure of the second stacking member in the

[0061] Figure 51 is Figure 1 Exploded schematic diagram of the first stacking member in the

[0062] Figure 52 is Figure 51 Partial schematic diagram of the first stacking member in the

[0063] Reference numerals:

[0064] 100. Stacking system; 101. First connector; 1011. Upper cover body; 1012. Lower cover body; 102. Second connector; 1021. Intermediate box body; 1. Stacking member; 10. First stacking member; 11. Activity slot; 111. First notch; 112. Second notch; 113. First side wall; 1131. Leg card slot; 114. Second side wall; 1141. First limiting portion; 115. First bottom wall; 116. Dust suction main body; 117. Dust suction pipe fitting; 118. Wire winding post; 12. Fifth mating structure; 13. Seat body limiting member; 131. Base portion; 132. Blocking portion; 1321. Accommodation groove; 1322. Sleeve post; 133. Side auxiliary wall; 1331. Connection hole; 20. First mating structure; 21. First elastic member; 22. First movable member; 221. Base; 2211. First assembly groove; 2212. Second limiting portion; 2213. Third limiting portion; 222. First clamping portion; 2221. First guiding inclined surface; 2222. Abuttment groove; 223. Auxiliary portion; 224. Rotating seat; 2241. Second assembly groove; 2242. Clamping body; 22421. Eave portion; 2243. Support body; 22431. Arc-shaped groove; 2244. Rotating body leg; 225. Slide groove; 30. Third mating structure; 40. Second stacking member; 41. Sixth mating structure; 42. Rotating installation groove; 421. Third notch; 422. Fourth notch; 423. Third side wall; 424. Fourth side wall; 50. Second mating structure; 51. Second clamping portion; 511. Slot; 512. Second guiding inclined surface; 60. Fourth mating structure; 70. Positioning mating portion; 71. Protrusion; 72. Clamping foot; 721. Connection portion; 722. Clamping hook portion; 7221. Third guiding inclined surface; 7222. Fourth guiding inclined surface; 80. Positioning assembly; 81. Positioning member; 811. Inclined abutment surface; 812. Arc-shaped abutment surface; 813. Fourth limiting portion; 814. First arm; 815. Second arm; 8151. Abutting foot; 82. Second elastic member; 83. Fourth elastic member; 90. Mounting seat. Detailed implementation manners

[0065] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0066] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0067] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0068] In the present application, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0069] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0070] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0071] See Figure 1 , based on this, the present application provides a stacking system 100. The stacking system 100 includes a plurality of stacking members 1. A first mating structure 20 is provided at the top of the stacking member 1 and / or a second mating structure 50 is provided at the bottom of the stacking member 1. The first mating structure 20 and the second mating structure 50 located on different stacking members 1 can cooperate with each other, so that the different stacking members 1 can be stacked and connected vertically.

[0072] With such an arrangement, the plurality of stacking members 1 can be stacked and connected vertically, and then can be carried and moved simultaneously, and can remain stable during the carrying and moving process, and are not easily slipped and separated. While saving transportation time, the storage space can be better utilized.

[0073] Further, when the first mating structure 20 is provided at the top of the stacking member 1 and the second mating structure 50 is provided at the bottom at the same time, then the upper and lower sides of the stacking member 1 can be stacked and connected to one other stacking member 1 respectively. When only the first mating structure 20 is provided at the top of the stacking member 1, then the stacking member 1 can only be stacked and connected below another stacking member 1. Similarly, when only the second mating structure 50 is provided at the bottom of the stacking member 1, then the stacking member 1 can only be stacked and connected above another stacking member 1.

[0074] It can be understood that the stacking member 1 includes but is not limited to a storage tool or a cleaning tool.

[0075] See Figure 1 and Figure 2 , in an embodiment, at least one stacking member 1 is a vacuum cleaner or at least one stacking member 1 is further provided with a dust suction function. The vacuum cleaner can be stacked and connected above or below another stacking member 1 through the first mating structure 20 at the top and / or the second mating structure 50 at the bottom, so as to realize common movement and storage, saving time and effort.

[0076] See Figure 1 and Figure 2, Exemplarily, in one embodiment, the vacuum cleaner includes a dust collection main body 116 in a box structure and a dust collection pipe fitting 117 detachably mounted on the dust collection main body 116. At least part of the dust collection pipe fitting 117 can be wound around the outer peripheral wall of the dust collection main body 116 or received into the dust collection main body 116. A first fitting structure 20 is provided at the top of the dust collection main body 116, and a second fitting structure 50 is provided at the bottom of the dust collection main body 116.

[0077] With such a setting, both the upper and lower parts of the vacuum cleaner can be freely stacked and connected to other stacking members 1. For example, the vacuum cleaner can be stacked and connected above or below a stacking member 1, or the vacuum cleaner can be stacked and connected between two stacking members 1. It can be understood that in other embodiments, according to different stacking requirements, the dust collection main body 116 may also be provided with only the first fitting structure 20 at the top or only the second fitting structure 50 at the bottom.

[0078] Specifically, the dust collection main body 116 includes a housing in a box structure, a dust collection module and an energy storage module. The dust collection module and the energy storage module are both installed in the housing, and the energy storage module is electrically connected to the dust collection module. It can be understood that both the first fitting structure 20 and the second fitting structure 50 are provided on the housing.

[0079] , Exemplarily, in this embodiment, a recess is circumferentially provided on the outer peripheral wall of the housing, and the dust collection pipe fitting 117 can be wound around and embedded in the recess. Further, a storage area is provided in the housing. The dust collection pipe fitting 117 has various types according to different use scenarios and requirements. Different types of dust collection pipe fittings 117 can be partially wound and stored in the recess on the outer peripheral wall of the housing or partially stored in the storage area in the housing for replacement use.

[0080] Further, the vacuum cleaner further includes a power cord electrically connected to the energy storage module. A cord storage post 118 protrudes from the outer peripheral wall of the housing, and the power cord can extend out of the housing and be wound around the cord storage post 118.

[0081] Please refer to again Figure 1 and Figure 2, for the sake of easy understanding, in the present application, when multiple stacking members 1 are stacked on each other, the stacking member 1 relatively located above the previous one is named the first stacking member 10, and the stacking member 1 relatively located below the previous one is named the second stacking member 40. In other words, both the first stacking member 10 and the second stacking member 40 are stacking members 1. When multiple stacking members 1 are stacked and connected to each other, for every two stacking members 1, the one located above is the first stacking member 10, and the one relatively located below is the second stacking member 40. For example, when three stacking members 1 are stacked and connected to each other, the middle stacking member 1 can be called the first stacking member 10 relative to the stacking member 1 located above it, and can be called the second stacking member 40 relative to the stacking member 1 located below it. It can be understood that naming the first stacking member 10 and the second stacking member 40 is only for the convenience of understanding the mating relationship and mating process between the first mating structure 20 and the second mating structure 50, and between the third mating structure and the fourth mating structure.

[0082] That is to say, when multiple stacking members 1 are stacked on each other, the first mating structure 20 is arranged at the top of the first stacking member 10, and the second mating structure 50 is arranged at the bottom of the second stacking member 40.

[0083] In one embodiment of the present application, the first mating structure 20 and the second mating structure 50 cooperate with each other to at least limit the movement of the first stacking member 10 and the second stacking member 40 in the Z direction. The Z direction is also the direction in which the stacking members 1 are connected and extended in a stacked manner.

[0084] In one embodiment of the present application, the first mating structure 20 and the second mating structure 50 cooperate with each other to also limit the movement of the first stacking member 10 and the second stacking member 40 in the X direction and / or the Y direction. For example, one of the first mating structure and the second mating structure is a groove with a notch perpendicular to the Z direction, and the other is a protrusion. The protrusion and the groove are inserted and mated with each other to limit the movement of the first stacking member 10 and the second stacking member 40 in the Z direction and the X direction or the Z direction and the Y direction.

[0085] Furthermore, in one embodiment of the present application, another third mating structure 30 is further arranged at another location on the top of the first stacking member 10, and a fourth mating structure 60 adapted to the third mating structure 30 is further arranged at another location on the bottom of the second stacking member 40. In a state where the first mating structure 20 and the second mating structure 50 cooperate with each other, and the third mating structure 30 and the fourth mating structure 60 cooperate with each other, the movement of the first stacking member 10 and the second stacking member 40 in the X direction, the Y direction, and the Z direction are all limited. In this way, the reliability of the stacking connection between the stacking members can be further ensured, and it is more secure and stable during transportation and storage, and it is not easy to occur the situation that some stacking members slip and fall, causing injury to personnel.

[0086] Further, on both sides of the top of the first stack 10 in the X direction, at least one set of first mating structures 20 and third mating structures 30 are provided, and the third mating structure 30 has the same structure as the first mating structure 20 and is disposed oppositely; on both sides of the bottom of the second stack 40 in the X direction, at least one set of second mating structures 50 and fourth mating structures 60 are provided, and the fourth mating structure 60 has the same structure as the second mating structure 50 and is disposed oppositely; and / or, on both sides of the top of the first stack 10 in the Y direction, at least one set of first mating structures 20 and third mating structures 30 are provided, and the third mating structure 30 has the same structure as the first mating structure 20 and is disposed oppositely; on both sides of the bottom of the second stack 40 in the Y direction, at least one set of second mating structures 50 and fourth mating structures 60 are provided, and the fourth mating structure 60 has the same structure as the second mating structure 50 and is disposed oppositely.

[0087] In one embodiment, the third mating structure 30 has the same structure as the first mating structure 20 and is axially symmetrically disposed, and the fourth mating structure 60 has the same structure as the second mating structure 50 and is axially symmetrically disposed.

[0088] Further, in one embodiment, the third mating structure 30 has the same structure as the first mating structure 20 and is axially symmetrically disposed about the central axis of the first stack 10, and the fourth mating structure 60 has the same structure as the second mating structure 50 and is axially symmetrically disposed about the central axis of the second stack 40.

[0089] Further, in one embodiment, the third mating structure 30 has the same structure as the first mating structure 20 and is axially symmetrically disposed on opposite sides of the first stack 10 about the central axis of the first stack 10, and the fourth mating structure 60 has the same structure as the second mating structure 50 and is axially symmetrically disposed on opposite sides of the second stack 40 about the central axis of the second stack 40. It can be understood that in other embodiments, the third mating structure 30 and the first mating structure 20 can also be relatively disposed about other axes of the first stack 10. It can be understood that the relative disposition includes, but is not limited to, axial symmetry, and can also be disposed on both sides of the axis but diagonally.

[0090] It can be understood that the first mating structure 20 and the third mating structure 30 can be located on the same height plane or on different height planes. In other words, there can be a height difference between the two locations where the first stack 10 is provided with the first mating structure 20 and the third mating structure 30.

[0091] Please refer to again Figure 1 and Figure 2, for facilitating structural processing and stacking operations, in one embodiment, a set of first mating structures 20 and third mating structures 30 are provided on both sides of the top of the first stack 10 in the X direction, and the third mating structures 30 have the same structure as the first mating structures 20; at the same time, correspondingly, a set of second mating structures 50 and fourth mating structures 60 are provided on both sides of the bottom of the second stack 40 in the X direction, and the fourth mating structures 60 have the same structure as the second mating structures 50 and are arranged oppositely.

[0092] It can be understood that in other embodiments, one or more sets of first mating structures 20 and third mating structures 30 can also be provided on both sides of the top of the first stack 10 in the X direction and both sides in the Y direction; correspondingly, one or more sets of second mating structures 50 and fourth mating structures 60 are provided on both sides of the top of the second stack 40 in the X direction and both sides in the Y direction. Specific examples are not elaborated one by one here.

[0093] For example, in one embodiment, two sets of first mating structures 20 and third mating structures 30 can also be provided. One set of first mating structures 20 and third mating structures 30 is provided on both sides of the top of the first stack 10 in the X direction, and the other set is provided on both sides of the top of the first stack 10 in the Y direction; two sets of second mating structures 50 and fourth mating structures 60 are also correspondingly provided. One set of second mating structures 50 and fourth mating structures 60 is provided on both sides of the bottom of the second stack 40 in the X direction, and the other set is provided on both sides of the bottom of the second stack 40 in the Y direction.

[0094] Furthermore, in other embodiments, the third mating structures 30 can also be different from the first mating structures 20, and the fourth mating structures 60 can also be different from the second mating structures 50, as long as the third mating structures 30 and the fourth mating structures 60 can cooperate with each other, and can, together with the first mating structures 20 and the second mating structures 50, restrict the movement between the first stack 10 and the second stack 40 in the X direction, Y direction, and Z direction.

[0095] For example, in one of the embodiments, the third mating structure 30 includes a first mating portion provided on the top of the first stack 10, and the fourth mating structure 60 includes a second mating portion provided on the bottom of the second stack 40. When the second stack 40 is stacked on the first stack 10, the first mating portion can be engaged with the second mating portion to cooperate with the first mating structure 20 and the second mating structure 50 to simultaneously restrict the movement of the second stack 40 in the X direction, Y direction, and Z direction. It can be understood that the first mating portion and the second mating portion can both be configured as clamping plates to be engaged with each other, or one can be a groove and the other can be a protrusion to be engaged with each other.

[0096] It can be further understood that, in one embodiment, the stacking system 100 further includes a fifth mating structure 12 and a sixth mating structure 41. The fifth mating structure 12 is disposed on the top of the first stack 10, and the sixth mating structure 41 is disposed on the bottom of the second stack 40. When the second stack 40 is stacked on the first stack 10, the fifth mating structure 12 and the sixth mating structure 41 can cooperate with each other to limit the movement of the second stack 40 in the X and Y directions. In other words, on the basis of the mutual cooperation of the first mating structure 20, the second mating structure 50, the third mating structure 30, and the fourth mating structure 60, other mating structures can also be added according to requirements to further assist in limiting the position, ensuring that relative displacement is not likely to occur between the first stack 10 and the second stack 40 after they are stacked and connected.

[0097] The following further introduces the methods and structures for realizing stacking connection between the stacks 1.

[0098] Refer to Figures 1 - 24 , for example, refer to the first embodiment of the present application. In this embodiment, the stacking system 100 includes three stacks 1, which are a vacuum cleaner, a storage box, and a trolley from top to bottom in sequence. Optionally, both the storage box and the vacuum cleaner are cuboids and have the same size. It can be understood that in other embodiments, the specific functions of the stacks 1 are not limited. The stack 1 can be a storage box, or a trolley, a vacuum cleaner, or a storage basket, etc., and the specific size is also not limited.

[0099] For the convenience of understanding, the mating structure and mating state of the first mating structure 20 and the second mating structure 50 are described by taking the vacuum cleaner and the storage box in this embodiment as examples. In this embodiment, the storage box is the first stack 10 relative to the vacuum cleaner, and the vacuum cleaner is the second stack 40 relative to the storage box. It can be understood that if the stacking connection between the storage box and the trolley is taken as an example to describe the mating structure and mating state of the first mating structure 20 and the second mating structure 50, then the storage box is the second stack 40 relative to the trolley, and the trolley is the first stack 10 relative to the storage box.

[0100] In the present application, the stacking system has a locked state. In the locked state, the first stack and the second stack can be locked in the X, Y, and Z directions by the pressure on the upper one. The "pressure" can be only the gravity generated by the stack 1 on the upper one itself, or the gravity generated by the stack 1 on the upper one itself and the pressure exerted by an external force on the stack 1 on the upper one.

[0101] Exemplarily, in this embodiment, the X direction, Y direction, and Z direction respectively correspond to the length direction, width direction, and height direction of the storage box. It should be noted that in this embodiment, the height direction is also the direction in which the first stacking member 10 and the second stacking member 40 are stacked and extended. It can be understood that when the shape of the storage box is a prism or a cylinder, the X direction, Y direction, and Z direction can be determined according to specific circumstances.

[0102] It can be understood that in the same stacking system 100, when the coordinate system of the X direction, Y direction, and Z direction is determined, the corresponding relationship between the length direction, width direction, and height direction of different stacking members and the X direction, Y direction, and Z direction is related to the length, width, height, and placement direction of the stacking member, and needs to be corresponded according to specific circumstances. For example, in the same X, Y, Z direction coordinate system, the length direction, width direction, and height direction of the first stacking member 10 can respectively correspond to the X direction, Y direction, and Z direction, while the length direction, width direction, and height direction of the second stacking member 40 can respectively correspond to the Y direction, X direction, and Z direction.

[0103] Exemplarily, in the first embodiment provided in the present application, the first mating structure 20 includes a first elastic member 21 and a first movable member 22. The first elastic member 21 can act on the first movable member 22 elastically. When the second stacking member 40 is stacked on the first stacking member 10, the first movable member 22 can move on the first stacking member 10 under the pressure of the second stacking member 40. When the second stacking member 40 is stacked in place, the first movable member 22 can be elastically engaged with the second mating structure 50 under the elastic action of the first elastic member 21, so as to achieve a locked state through the pressure of the second stacking member 40. It should be noted that in this embodiment, the pressure refers to the gravity generated when the second stacking member 40 is placed.

[0104] With such a setting, during the stacking process, it is only necessary to directly carry and place the second stacking member 40 on the first stacking member 10, and the locked state can be automatically formed by the pressure generated by the weight of the second stacking member 40, reducing the complexity of the locking operation and effectively improving the work efficiency and the convenience of stacking positioning. In other words, in this embodiment, the stacking system 100 can achieve gravity self-locking through the weight of the previous one.

[0105] Further, in the first embodiment of the present invention, the first movable member 22 is slidably connected to the first stacked member 10. It can be understood that the sliding connection is convenient and relatively stable. Optionally, the sliding direction of the first movable member 22 is the same as the X direction or the Y direction. In other words, in this embodiment, the first movable member 22 can slide outward along the X direction or the Y direction of the first stacked member 10. It should be emphasized that in this embodiment, the X direction refers to the length direction of the first stacked member 10, the Y direction refers to the width direction of the first stacked member 10, and the Z direction refers to the height direction of the first stacked member 10.

[0106] Please refer to again Figures 1 - 18 , optionally, in this embodiment, the first movable member 22 can move along the X direction (length direction) of the first stacked member 10; the first movable member 22 includes a base 221 and a first engaging portion 222 provided on the base 221, the base 221 is slidably connected to the first stacked member 10, and the second engaging structure 50 includes a second engaging portion 51 provided on the second stacked member 40. In the locked state, the first engaging portion 222 can be engaged with the second engaging portion 51 under the action of the first elastic member 21 to at least limit the second stacked member from detaching from the first stacked member along the Z direction.

[0107] It can be understood that the specific structures of the first engaging portion 222 and the second engaging portion 51 can be changed according to requirements to simultaneously limit the relative movement of the second stacked member along the X direction and / or the Y direction with respect to the first stacked member 10. Correspondingly, the third engaging structure 30 and the fourth engaging structure 60 can supplement the limitation of the movement of the second stacked member 40 in other directions to ensure that the first stacked member 10 and the second stacked member 40 cannot have relative displacement in the X, Y, and Z directions in the locked state.

[0108] It should be noted that, optionally, in this embodiment, the first engaging portion 222 protrudes from the base 221, and the second engaging portion 51 protrudes from the bottom of the second stacked member 40. It can be understood that the protrusion is relative and does not represent the entire surface protruding from the base 221 or the bottom of the second stacked member 40. The meaning of protrusion in the following text will not be elaborated again as long as it can achieve the required function.

[0109] Please refer to again Figure 9 Optionally, in this embodiment, the second engaging portion 51 may or may not protrude from the bottom of the second stacked member 40, as long as the overall structure of the bottom of the second stacked member 40 does not affect the gravity automatic locking when the second stacked member 40 is stacked on the first stacked member 10. For example, in this embodiment, an inner concave area (not labeled) may be provided at the bottom of the second stacked member 40, and the second engaging portion 51 protrudes from the inner concave area but does not protrude from other parts of the bottom of the second stacked member 40.

[0110] Please refer to againFigures 5 - 10 It can be understood that, for the sake of facilitating the snap - fit between the first card portion 222 and the second card portion 51, one of the first card portion 222 and the second card portion 51 may have pins, and the other may be provided with a slot 511. The slot 511 may have one notch or multiple notches to selectively define the moving direction of the second stacked member 40 according to requirements. In other words, the cooperation between slots 511 of different shapes and the pins can correspondingly limit the movement of the second stacked member 40 in one or multiple directions.

[0111] Please refer to again Figures 5 - 10 Exemplarily, in this embodiment, the first card portion 222 has pins (not labeled), and the second card portion 51 is provided with a slot 511. In the locked state, the pins of the first card portion 222 can be inserted into the slot 511 under the action of the first elastic member 21. Please refer to again Figure 5 Furthermore, in this embodiment, the slot 511 is a concave groove, that is, the slot 511 has only one notch. In this way, the side walls around the slot 511 can all play a limiting role. Among them, the upper and lower side walls of the slot 511 can limit the movement of the second stacked member 40 along the Z - direction, and the left and right side walls of the slot 511 can limit the movement of the second stacked member 40 along the Y - direction; the side wall of the slot 511 opposite to the notch can limit the movement of the second stacked member 40 along the X - direction away from the side of the notch.

[0112] It can be understood that in other embodiments, the slot 511 may also have only upper and lower side walls, so that it can selectively limit only the movement of the second stacked member 40 along the Z - direction. Correspondingly, the cooperation between the third mating structure 30 and the fourth mating structure 60 can limit the movement of the second stacked member along the X - direction and the Y - direction.

[0113] Please refer to again Figures 1 - 10 In this embodiment, an activity slot 11 is provided at the top of the first stacked member 10. The activity slot 11 is used to install the first movable member 22. The activity slot 11 has a first notch 111 and a second notch 112 that communicate with each other. The first notch 111 is provided on the side wall of the first stacked member 10, and the second notch 112 is provided on the top wall of the first stacked member 10. The first movable member 22 can move towards the direction of the first notch 111.

[0114] Please refer to again Figure 8 It should be noted that the side wall of the activity slot 11 opposite to the first notch 111 is the first side wall 113, the two opposite side walls of the activity slot 11 are both the second side walls 114, and the bottom wall opposite to the second notch 112 is the first bottom wall 115. It can be understood that in this embodiment, the setting direction of the first elastic member 21 faces the first side wall 113. In other words, the setting direction of the first elastic member 21 is parallel to the length direction of the first stacked member 10.

[0115] Further, referring to Figures 1 - 10 , in this embodiment, the third mating structure 30 has the same structure as the first mating structure 20 and is disposed opposite thereto, and the fourth mating structure 60 has the same structure as the second mating structure 50 and is disposed opposite thereto. With such a setting, it is convenient for the quick stacking and locking of the first stack 10 and the second stack 40. Since the specific structures of the third mating structure 30 and the fourth mating structure 60 are the same as those of the first mating structure 20 and the second mating structure 50 respectively, the mating process between the two will not be described herein again.

[0116] Further, in one embodiment of the present invention, one side of the second engaging portion 51 opposite to the notch of the slot 511 can abut against the first side wall 113. With such a setting, the second engaging portion 51 of the second mating structure 50 and the second engaging portion 51 of the fourth mating structure 60 can cooperate with each other to ensure that the movement of the second stack 40 in the X direction is restricted. Ensure that after the first engaging portion 222 and the second engaging portion 51 are engaged with each other in the locked state, the first stack 10 and the second stack 40 can be stably stacked and cannot be separated from each other in the X, Y, and Z directions.

[0117] It can be understood that in other embodiments, one side of the second engaging portion 51 opposite to the notch of the slot 511 may not abut against the first side wall 113, and the movement of the second stack 40 in the X direction can be relatively limited by other means; for example, an additional abutting protrusion is provided at the bottom of the second stack 40 corresponding to the first mating structure 20 and the third mating structure 30 respectively. Among them, the abutting protrusion corresponding to the first mating structure 20 can abut against the first side wall 113 of the movable slot 11 at the first mating structure 20. In the locked state, the abutting protrusion can limit the movement of the second stack 40 in the X direction towards the third mating structure 30; further, in the locked state, the abutting protrusion corresponding to the third mating structure 30 can abut against the first side wall 113 of the movable slot 11 at the third mating structure 30, and the abutting protrusion can limit the movement of the second stack 40 in the X direction towards the first mating structure 20; thus, without relying on the second engaging portion 51, it is still possible to ensure that the movement of the first stack 10 and the second stack 40 in the X direction is effectively restricted.

[0118] It can be understood that as long as the abutting protrusion can cooperate with the side wall of the movable slot 11 to limit the movement of the second stack 40 in the X direction, the setting position of the abutting protrusion can be flexibly changed, and it can be provided separately or integrally with other structures.

[0119] Please refer to again Figures 1 - 10 , and also refer to Figure 19 and Figure 21, to facilitate the movement of the first movable member 22 under the gravity of the second stack 40. Optionally, in this embodiment, the first engaging portion 222 has a first guiding inclined surface 2221 for guiding when the first engaging portion 222 is inserted into the slot 511. Specifically, the first guiding inclined surface 2221 is disposed on a side of the first engaging portion 222 relatively far from the base 221.

[0120] Please refer to again Figure 9 and Figure 10 , further, the second engaging portion 51 has a second guiding inclined surface 512 for guiding when the first engaging portion 222 is inserted into the slot 511. Specifically, the second guiding inclined surface 512 is disposed on a side of the second engaging portion 51 relatively far from the second stack 40. With such a setting, in this embodiment, when the second stack 40 is placed on the first stack 10, under the gravity of the second stack 40, the second guiding inclined surface 512 of the second engaging portion 51 can cooperate with the first guiding inclined surface 2221 of the first engaging portion 222, so that the first engaging portion 222 can quickly enter the slot 511 to form a locked state.

[0121] In other words, when the second stack 40 is stacked on the first stack 10, the second engaging portion 51 can, under the gravity of the second stack 40 and the action of the first guiding inclined surface 2221 and the second guiding inclined surface 512, squeeze the first engaging portion 222, so that the first movable member 22 can slide and make way on the first stack 10, and further enable the second stack 40 to be stacked in place and fit with the second stack 40. After the second stack 40 is stacked in place, the first engaging portion 222 can quickly insert into the slot 511 under the elastic action of the first elastic member 21 to complete the locking process.

[0122] Please refer to again Figure 19 , optionally, in this embodiment, the base 221 is provided with two first engaging portions 222, and the two first engaging portions 222 are arranged at intervals. With such a setting, the clamping reliability can be further increased.

[0123] Please refer to again Figure 19 and Figure 21 , optionally, in this embodiment, the first movable member 22 further includes an auxiliary portion 223. The auxiliary portion 223 is disposed on the base 221 and located between the two first engaging portions 222, and the auxiliary portion 223 is used to provide a force application position. This facilitates the user to apply force to pull the first movable member 22.

[0124] It can be understood that the auxiliary portion 223 can be a convex edge portion provided on the base 221, or other feature portions that can assist in pulling the base 221 to move, such as a groove portion, or a silica gel portion or a rubber portion with a relatively rough surface.

[0125] Optionally, in this embodiment, two or three of the base 221, the first engaging portion 222, and the auxiliary portion 223 are integrally formed. This setting facilitates processing.

[0126] Please refer to Figures 5 - 7 again. It should be noted that in the first embodiment of the present invention, the first engaging structure 20 is located in the middle of the width side of the first stacking member 10, and the moving direction of the first movable member 22 is perpendicular to this width side. It can be understood that in other embodiments, the position of the first engaging structure 20 can be set according to requirements, and it can also be provided on the length side or not in the middle.

[0127] It can be understood that according to requirements, the structure of the third engaging structure 30 can be the same as that of the first engaging structure 20 or different from that of the first engaging structure 20.

[0128] Please refer to Figure 8 , Figure 13 and Figure 14 again. Further, in this embodiment, the stacking system 100 further includes a mounting base 90, and the first elastic member 21 is mounted on the first stacking member 10 through the mounting base 90. This can make the position of the first elastic member 21 more stable, and further ensure the stability of the sliding direction of the first movable member 22.

[0129] Specifically, the mounting base 90 is fixed on the first bottom wall 115 of the movable groove 11. It can be understood that the mounting base 90 can be integrally formed with the first bottom wall 115 or can be independently formed and then mounted on the first bottom wall 115; further, the mounting base has an L-shaped structure, including a first mounting plate attached to the first bottom wall 115 and a second mounting plate perpendicular to the first mounting plate. One end of the first elastic member 21 abuts against the second mounting plate of the mounting base 90, and the other end abuts against the first movable member 22, so that the first elastic member 21 can drive the first movable member 22 to move more stably.

[0130] Further, in order to further ensure the mounting stability of the first elastic member 21 and the sliding stability of the first movable member, a sliding groove 225 is provided in the first movable member 22, and the first elastic member 21 and the mounting base 90 can be located in the sliding groove 225 to ensure that the mounting base 90 and the sliding groove 225 can cooperate with each other, so that the first elastic member 21 can drive the first movable member 22 to slide more stably and reliably. Exemplarily, in this embodiment, the sliding groove 225 includes a first groove area and a second groove area connected to each other. The first groove area is used to accommodate the second mounting plate of the mounting base 90, and the second groove area is used to accommodate the first mounting plate of the mounting base 90 and the first elastic member 21 located on the first mounting plate, so as to ensure that the first movable member 22 can slide back and forth on the first bottom wall 115.

[0131] In this embodiment, first limiting portions 1141 are provided on two opposite side walls of the movable slot 11, second limiting portions 2212 are provided on two corresponding sides of the first movable member 22, and the first limiting portions 1141 and the second limiting portions 2212 cooperate with each other to limit the moving distance or the rotation range of the first movable member 22.

[0132] In this embodiment, after the second stacking member 40 is stacked on the first stacking member 10, the first movable member 22 can move on the first stacking member 10 and does not protrude from the side wall of the first stacking member 10. With such a setting, the risk that the moving distance or the moving range of the first movable member 22 is limited in a narrow space, resulting in inability to lock or inability to unlock after locking, can be avoided or reduced.

[0133] It can be understood that in other embodiments, without affecting the mutual stacking and locking of the first stacking member 10 and the second stacking member 40, after the second stacking member 40 is stacked on the first stacking member 10, the first movable member 22 can also move on the first stacking member 10 and protrude from the side wall of the first stacking member 10.

[0134] Please refer to again Figures 1 - 24 , in this embodiment, the stacking system 100 further includes an unlocking state, in which the second stacking member 40 can be separated from the first stacking member 10; the stacking system 100 further includes a positioning assembly 80, and when the positioning assembly 80 is in the positioning position, the stacking system 100 forms an unlocking state.

[0135] Further, please refer to again Figures 1 - 10 , in this embodiment, the positioning assembly 80 is arranged on the first matching structure 20. Under the action of an external force, the first matching structure 20 can drive the positioning assembly 80 to move to the positioning position, so that the stacking system 100 can be switched from the locked state to the unlocked state. The positioning assembly 80 is arranged on the first matching structure 20, which can keep the positioning assembly 80 and the first matching structure 20 synchronized, facilitating operation and enabling the unlocking state to be quickly formed. It can be understood that in other embodiments, the positioning assembly 80 can also be arranged on the first stacking member 10 and / or the second stacking member 40.

[0136] Further, in this embodiment, the positioning assembly 80 includes a positioning member 81 and a second elastic member 82. The second elastic member 82 acts on the positioning member 81 elastically. The second stacking member 40 is further provided with a positioning and matching portion 70. When the positioning assembly 80 follows the first movable member 22 to move to the positioning position, the positioning member 81 can abut against the positioning and matching portion 70 under the elastic action of the second elastic member 82 to prevent the first elastic member 21 from driving the first movable member 22 to move.

[0137] In this embodiment, a first assembly groove 2211 is formed in the base 221, and the positioning component 80 is movably installed in the first assembly groove 2211; in the locked state, the positioning member 81 can rotate into the first assembly groove 2211 under the pressing of the positioning and mating portion 70 and compress the second elastic member 82; in the unlocked state, under the action of an external force, the first movable member 22 drives the positioning component 80 to move to the positioning position, and the positioning member 81 can be elastically abutted against the positioning and mating portion 70 under the elastic action of the second elastic member 82 to prevent the first elastic member 21 from driving the base 221 to slide. It can be understood that after the positioning component 80 reaches the positioning position, the external force can be removed. At this time, the positioning member 81 is elastically abutted against the positioning and mating portion 70 under the elastic action of the second elastic member 82, and the stacking system 100 can be kept in the unlocked state, and the user can directly move the second stacked member 40 away from the first stacked member 10.

[0138] Optionally, in this embodiment, the positioning and mating portion 70 is a bump 71 provided at the bottom of the second stacked member 40. In the unlocked state, the positioning member 81 can be elastically abutted against the outer side of the bump 71 under the elastic action of the second elastic member 82. It can be understood that in other embodiments, the positioning and mating portion 70 can also be the side wall of the second stacked member 40.

[0139] Please refer to again Figures 1 - 10 and refer to together Figures 22 - 24 Optionally, in this embodiment, the positioning member 81 has an inclined abutting surface 811 on the side opposite to the first bottom wall 115 of the first assembly groove 2211. When the first movable member 22 moves outward to the outside of the first stacked member 10, the inclined abutting surface 811 can facilitate the positioning member 81 to quickly reach the positioning position, so that the positioning member 81 can quickly abut against the positioning and mating portion 70.

[0140] It can be understood that in the locked state, the positioning and mating portion 70 can press against the inclined abutting surface 811 to prevent the positioning member 81 from rotating out of the first assembly groove 2211 under the action of the second elastic member 82.

[0141] Please refer to again Figure 23 Optionally, in this embodiment, the side of the positioning member 81 abutting against the positioning and mating portion 70 is an arc-shaped abutting surface 812. With this setting, while ensuring the abutting and positioning function, it is convenient for the positioning member 81 to rotate in the first assembly groove 2211. It can be understood that correspondingly, in the unlocked state, the side of the positioning and mating portion 70 abutting against the positioning member 81 can also be an arc-shaped abutting surface. To further facilitate the abutting and positioning between the two, and at the same time facilitate the positioning member 81 to rotate in the first assembly groove 2211.

[0142] Please refer to again Figures 1 - 10 and refer to together Figures 22 - 24, Optionally, in this embodiment, a third limiting portion 2213 is provided on the arc-shaped abutting surface 812, and a fourth limiting portion 813 is provided on the groove wall of the first fitting groove 2211 corresponding to the arc-shaped abutting surface 812. When the positioning member 81 rotates away from the first bottom wall 115 of the first fitting groove 2211 under the elastic action of the second elastic member 82, the fourth limiting portion 813 can be engaged with the third limiting portion 2213. With such a setting, the stability of the positioning member 81 can be maintained, and the positioning member 81 can be prevented from disengaging from the first fitting groove 2211.

[0143] Please refer to Figure 24 and Figure 25 , Optionally, in this embodiment, the second elastic member 82 is a conical spring. The conical spring has a small volume, a large load and a strong variable stiffness, can be applied to a small space, bear a greater pressure, and has a good shock absorption and rebound effect. It can be understood that in other embodiments, the second elastic member 82 includes but is not limited to conical springs, compression springs, torsion springs, spring sheets, etc.

[0144] It can be understood that multiple sets of mating components can be provided on the top of the first stack member 10. Each set of mating components can include one or more first mating structures 20 and one or more third mating structures 30, and each set of mating components positions a second stack member 40. In other words, the first stack member 10 can position a second stack member 40 through one or more first mating structures 20 and one or more third mating structures 30 as a group. The number and setting positions of the first mating structures 20 and third mating structures 30 required to position a second stack member 40 can be selected according to requirements, so that different sizes and / or different numbers of second stack members 40 can be fixed on the top of the first stack member 10.

[0145] It can be further understood that the number and setting positions of the second mating structures 50 and fourth mating structures 60 on the second stack member 40 do not necessarily exactly correspond to the number and positions of the first mating structures 20 and third mating structures 30 on the first stack member 10, and only need to correspond to the first mating structures 20 and third mating structures 30 used to fix the second stack member 40.

[0146] Therefore, during actual mating, when the position of the first mating structure 20 on the first stack member 10 used to fix the second stack member 40 is determined, the other structure or structures on the first stack member 10 that are locked with the second stack member 40 can be the third mating structure 30.

[0147] It can be understood that different sizes of second stack members 40 can be fixed by flexibly setting the first mating structures 20 and third mating structures 30 on the top of the first stack member 10 and / or the second stack member 40.

[0148] Please refer to again Figure 4 and Figure 5, Further, in this embodiment, the stacking system 100 further includes a reset state. In the reset state, the second stacking member 40 is separated from the first stacking member 10, the first engaging structure 20 is not stressed, and the position of the first engaging structure 20 in the reset state is the same as the position of the first engaging structure 20 in the locked state. It can be understood that in other embodiments, the position of the first engaging structure 20 in the locked state may also be different from the position of the first engaging structure 20 in the reset state, as long as the movement of the second stacking member 40 in the X, Y, and Z directions can be effectively restricted.

[0149] Please refer to again Figures 1 - 10 , Exemplarily, in this embodiment, the fifth engaging structure 12 and the sixth engaging structure 41 can cooperate with each other to restrict the movement of the second stacking member in the X direction and the Y direction. Specifically, the fifth engaging structure 12 includes a groove formed in the top of the first stacking member 10, and the groove is located between the first engaging structure 20 and the second engaging structure 50. The sixth engaging structure 41 includes a block provided at the bottom of the second stacking member 40, and the block is located between the third engaging structure 30 and the fourth engaging structure 60. When the second stacking member is stacked on the first stacking member, the block can be inserted into the groove to restrict the movement of the second stacking member 40 in the X direction and the Y direction. By setting like this, while restricting the movement of the second stacking member 40 in the X direction, the restriction on the movement of the second stacking member 40 in the Y direction can be strengthened. And it can ensure that the first stacking member 10 and the second stacking member 40 are closer when stacked, and can also be stably placed independently after separation.

[0150] Optionally, in this embodiment, the groove is non-circular, and the peripheral walls around the groove can play a limiting role; it can be understood that the block and the groove can correspond one by one, or one groove can cooperate with multiple blocks, as long as the movement of the second stacking member 40 in the X direction or the X direction and the Y direction can be restricted. Further, in other embodiments, the shape of the groove can also be circular, bow-shaped or other shapes.

[0151] It can be understood that in other embodiments, the fifth engaging structure 12 and the sixth engaging structure 41 can also be specifically implemented as other structures, as long as the relative displacement between the first stacking member 10 and the second stacking member 40 can be assisted in restricting.

[0152] In this embodiment, when the stacking member 1 is configured as a storage box, the storage box can be provided with structures such as a drawer (not marked) or a cabinet door (not shown) to facilitate storing items in the accommodating space of the storage box or taking them out of the storage box. Optionally, the drawer is slidably installed on one side of the storage box through a rail structure. The specific structure of the cabinet door is not limited, and the opening direction of the cabinet door is not limited. It can be opened outward to the left or right, or pulled out and opened upward. The cabinet door can also be rotated and then slid and stored on the top wall of the storage box. Details are not described here.

[0153] Furthermore, for the convenience of processing, the outer shells of stacked components such as storage boxes, storage baskets, or vacuum cleaners are generally integrally formed from the same material. However, when using the same material for integral processing, it is often difficult to specifically endow different parts of the stacked component with different functional characteristics and meet various requirements such as strong anti-damage ability during installation and stacking.

[0154] Therefore, in the present application, please refer back to Figures 1 - 10 and also refer to Figure 51 and Figure 52 In the present application, the stacked component 1 includes a first connecting body 101 and a second connecting body 102. The first connecting body 101 can at least form the upper surface and / or the lower surface of the stacked component 1; the second connecting body 102 is connected to the first connecting body 101 to form an accommodating space, and the materials of the second connecting body 102 and the first connecting body 101 are different.

[0155] Furthermore, in this embodiment, the first connecting body 101 is a plastic part, and the second connecting body 102 is a metal part. Both the first engaging structure 20 and the third engaging structure 30 are provided on the first connecting body 101; both the second engaging structure 50 and the fourth engaging structure 60 are provided on the second connecting body 102. In other words, the plastic first connecting body 101 forms the upper and lower parts of the stacked component 1. The parts where the first engaging structure 20, the third engaging structure 30, the second engaging structure 50, the fourth engaging structure 60 and other limiting structures are provided are preferably plastic parts for the convenience of processing and snap-fitting. The metal second connecting body 102 forms the middle part of the stacked component 1, which can effectively ensure the overall rigidity of the stacked component 1 and make the stacked component 1 not easily damaged. Moreover, since the first connecting body 101 is a plastic part and the second connecting body 102 is a metal part, it is also convenient to process different parts of the stacked component 1 into different colors to increase the aesthetic property. Further, the plastic part can also be convenient for processing and forming brand logos and model information of the stacked component 1, further improving the overall usability and practicality of the stacked component 1.

[0156] Exemplarily, taking the first stack member 10 configured as a storage box as an example, in this embodiment, the first connecting body 101 of the first stack member 10 includes an upper cover body 1011 and a lower cover body 1012, and the second connecting body 102 includes an intermediate box body 1021. Both sides of the intermediate box body 1021 are provided with openings, and the upper cover body 1011 and the lower cover body 1012 are respectively used to close one of the openings to form a complete storage box. The upper cover body 1011 and the lower cover body 1012 are both plastic parts, and the intermediate box body 1021 is an iron part or a stainless steel part. Further, it can be understood that if the first stack member 10 is a trolley, the first connecting body 101 may include a bearing plate, and the second connecting body 102 includes a chassis. The bearing plate of the trolley can be made of plastic material, and the chassis can be made of iron or stainless steel material. Other situations are not elaborated one by one here.

[0157] See Figure 26 and Figure 27 , the present invention also provides a second embodiment. The inventive concept and most of the structures of the second embodiment are the same as those of the first embodiment, except that: in the second embodiment, the first elastic member 21 is connected to one of the second side walls 114 of the movable groove 11, and the sliding direction of the first movable member 22 is the same as the width direction of the first stack member 10, that is, the first movable member can slide along the Y direction.

[0158] See Figures 28 - 34 , the present invention also provides a third embodiment. The inventive concept and most of the structures of the third embodiment are the same as those of the first embodiment, except that: in the third embodiment, the first movable member 22 is rotatably connected to the first stack member 10.

[0159] In the third embodiment, the first movable member 22 includes a rotating seat 224 and a first engaging portion 222 provided on the rotating seat 224. The rotating seat 224 is rotatably connected to the first stack member 10, and the second mating structure 50 includes a second engaging portion 51 provided on the second stack member 40. The second engaging portion 51 is provided with a slot 511; in the locked state, the first engaging portion 222 can be inserted into the slot 511 under the elastic action of the first elastic member 21 to restrict the second stack member 40 from disengaging from the first stack member 10 in the X direction, Y direction, and Z direction.

[0160] Furthermore, the rotating seat 224 is provided with a second fitting groove 2241, and the positioning assembly 80 is movably installed in the second fitting groove 2241; in the locked state, the positioning member 81 can be located on the side of the positioning mating portion 70 relatively far from the second stack member 40; in the unlocked state, the first movable member 22 drives the positioning assembly 80 to move to the positioning position under the action of an external force, and the positioning member 81 can abut against the positioning mating portion 70 under the elastic action of the second elastic member 82 to prevent the first elastic member 21 from driving the rotating seat 224 to rotate.

[0161] Please refer to Figure 30 , in this embodiment, the positioning and mating part 70 is a card foot 72 arranged at the bottom of the second stacked part 40. The card foot 72 includes a connecting part 721 and a hook part 722 arranged at the bottom end of the connecting part 721; in the unlocked state, the positioning part 81 can be clamped against the side of the hook part 722 relatively close to the second stacked part 40 under the drive of the rotating seat 224.

[0162] Furthermore, the side of the hook part 722 relatively far from the second stacked part 40 has a third guiding inclined surface 7221. When the unlocked state is formed, the third guiding inclined surface 7221 is used for guiding when the rotating seat 224 drives the positioning part 81 to rotate. In other words, when unlocking is required, the third guiding inclined surface 7221 can facilitate the rotating part to drive the positioning part 81 to rotate to the positioning position to prevent the first engaging part 222 of the rotating part driven by the first elastic part 21 from being inserted into the slot 511 of the second mating structure 50.

[0163] Furthermore, the side of the hook part 722 relatively close to the second stacked part 40 has a fourth guiding inclined surface 7222. When the unlocked state is formed, the fourth guiding inclined surface 7222 is used for guiding when the second stacked part 40 moves in the direction of separating from the first stacked part 10. In other words, the fourth guiding inclined surface 7222 can prevent the hook part 722 from being blocked by the bottom of the positioning part 81 and facilitate the second stacked part 40 to quickly move in the direction of separating from the first stacked part 10.

[0164] Please refer to Figures 35 - 43 , furthermore, the present invention also provides a fourth embodiment. The inventive concept and most of the structures of the fourth embodiment are the same as those of the first embodiment, the difference being that: the first movable part 22 is rotatably connected to the first stacked part 10.

[0165] In the fourth embodiment, the first movable part 22 includes a rotating seat 224 and a first engaging part 222 arranged on the rotating seat 224. The rotating seat 224 is rotatably connected to the first stacked part 10. The second mating structure 50 includes a second engaging part 51 arranged on the second stacked part 40. The second engaging part 51 is provided with a slot 511; in the locked state, the first engaging part 222 can first rotate in the γ direction under the pressure of the second stacked part 40. At this time, the first elastic part 21 is elastically compressed under the pressing of the rotating seat 224. After the second stacked part 40 is stacked in place, the elastic restoring force of the first elastic part 21 causes the rotating seat 224 to rotate and reset in the direction close to the second engaging part 51, and then the first engaging part 222 is inserted into the slot 511 to limit the second stacked part 40 from separating from the first stacked part 10 in the X direction, Y direction and Z direction.

[0166] Please refer to Figures 39 - 43, specifically, in this embodiment, the rotating seat 224 includes a clamping body 2242, a support body 2243, and a rotating body foot 2244. One end of the support body 2243 is connected to one side of the clamping body 2242, and the first clamping portion 222 is connected to one end of the clamping body 2242. The end of the clamping body 2242 relatively far from the first clamping portion 222 is an eaves portion 22421. The eaves portion 22421 and the first clamping portion 222 are respectively located on opposite sides of the support body 2243. The rotating body foot 2244 is connected to the end of the support body 2243 relatively far from the clamping body 2242, and the rotating body foot 2244 and the first clamping portion are located on the same side of the support body 2243.

[0167] An activity slot 11 is opened at the top of the first stack 10. The activity slot 11 is used to install the first movable member 22. The activity slot 11 has a first notch 111 and a second notch 112 that communicate with each other. The first notch 111 is opened on the side wall of the first stack 10, and the second notch 112 is opened on the top wall of the first stack 10. The clamping body 2242 can rotate around the rotating body foot 2244 to the side of the first notch 111 relatively far from the second notch 112.

[0168] Furthermore, the side wall of the activity slot 11 opposite to the first notch 111 is the first side wall 113, the two opposite side walls of the activity slot 11 are both second side walls 114, and the bottom wall opposite to the second notch 112 is the first bottom wall 115. It can be understood that in this embodiment, the first elastic member 21 is clamped between the eaves portion 22421 and the first stack 10. The setting direction of the first elastic member 21 faces the first bottom wall 115. In other words, the setting direction of the first elastic member 21 is perpendicular to the first bottom wall 115.

[0169] Furthermore, a foot clamping groove 1131 is also opened on the first side wall 113. The rotating body foot 2244 of the rotating seat 224 is inserted into the foot clamping groove 1131. The rotating body foot 2244 can be abutted and rotated in the foot clamping groove 1131 to ensure the rotation stability of the rotating seat 224.

[0170] Please refer to again Figures 35 - 43 , furthermore, the first stack 10 is also provided with a seat limiting member 13. The seat limiting member 13 is fixedly arranged on the first stack 10 and is located between the rotating seat 224 and the first stack 10. The seat limiting member 13 is used to limit the rotating seat 224 from detaching from the first stack 224. Specifically, the seat limiting member 13 is fixedly arranged on the first bottom wall 115 and is located between the rotating seat 224 and the first bottom wall 115. The seat limiting member 13 is used to limit the rotating seat 224 from moving in the direction away from the first side wall 113, that is, to limit the rotating seat 224 from disengaging from the activity slot 11.

[0171] Please refer to Figure 43, Exemplarily, the seat limiting member 13 includes a base portion 131 fixedly connected to the first bottom wall 115 and a blocking portion 132 protruding from one side of the base portion 131 away from the first side wall 113. The rotating seat 224 is rotatably arranged on the base portion 131 and is located between the blocking portion 132 and the first side wall 113. In other words, the translation of the rotating seat 224 in the X direction is limited by the blocking portion 132 and the support leg slot 1131.

[0172] Furthermore, the blocking portion 132 is further provided with a receiving groove 1321, and the first elastic member 21 is arranged in the receiving groove 1321. To ensure the stability of the first elastic member 21, a sleeve post 1322 protrudes from the bottom of the receiving groove 1321, and the first elastic member 21 is partially sleeved on the sleeve post 1322.

[0173] In this embodiment, the positioning assembly 80 is arranged on the second stacking member 40. Under the action of an external force, the positioning assembly 80 can move to the positioning position so that the stacking system 100 can be switched from the locked state to the unlocked state.

[0174] Specifically, the positioning assembly 80 includes a positioning member 81. The positioning member 81 is rotatably connected to the second stacking member 40. The positioning member 81 has a first arm 814 and a second arm 815 with opposite rotation directions. The first arm 814 can rotate to the positioning position under the action of an external force and drive the second arm 815 to act on the first movable member 22 in the opposite direction, so that the first movable member 22 rotates away from the second matching structure 50, and further the stacking system 100 is switched from the locked state to the unlocked state.

[0175] The positioning assembly 80 further includes a fourth elastic member 83. The fourth elastic member 83 is arranged between the first arm 814 and the second stacking member 40 and elastically acts on the first arm 814. When the stacking system is switched from the locked state to the unlocked state, the fourth elastic member 83 can be compressed by the first arm 814 and drive the positioning member 81 to reset after the second stacking member 40 is separated from the first stacking member 10.

[0176] Please refer to again Figures 35 - 38 , in this embodiment, a rotating installation groove 42 is further opened at the bottom of the second stacking member 40. The positioning member 81 is rotatably installed in the rotating installation groove 42. The rotating installation groove 42 has a third notch 421 and a fourth notch 422. The third notch 421 is opened on the side wall of the second stacking member 40, and the fourth notch 422 is opened on the bottom wall of the second stacking member 40. Among them, the side wall of the rotating installation groove 42 opposite to the third notch 421 is the third side wall 423, the two opposite side walls of the rotating installation groove 42 are the fourth side walls 424, and the bottom wall opposite to the fourth notch 422 is the second bottom wall (not marked).

[0177] The connection between the first arm 814 and the second arm 815 is hinged between two fourth side walls 424 of the rotation mounting groove 42, and the fourth elastic member 83 is disposed between the first arm 814 and the second bottom wall. In the locked state and the reset state, the second arm 815 is parallel to the third side wall 423, and there is a rotation gap (not labeled) between the first arm 814 and the second bottom wall.

[0178] Further, in order to facilitate the positioning member 81 to drive the rotating seat 224 to rotate to form an unlocked state, in this embodiment, an abutting groove 2222 is further formed in the first engaging portion 222 of the rotating seat 224, and an abutting foot 8151 is further disposed at one end of the second arm 815 away from the first arm 814. When the second stack member 40 and the first stack member 10 are stacked to form a locked state, the abutting foot 8151 can be received in the abutting groove 2222. When switching from the locked state to the unlocked state, the user bends the first arm 814 upward, that is, rotates the first arm 814 toward the side facing the second bottom wall (see the illustrated α direction), the fourth elastic member 83 is compressed, the second arm 815 rotates in the reverse direction (see the illustrated β direction), and the abutting foot 8151 of the second arm 815 will rotate along the β direction and push the rotating seat 224 to rotate through the abutting groove 2222, so that the first engaging portion disengages from the slot 511 of the second stack member 40. It should be noted that during this process, the user needs to continuously apply force to the first arm 814 to first rotate the first arm 814 to the positioning position, and then keep it in the positioning position until the second stack member 40 is completely separated from the first stack member 10. In the first embodiment, the second embodiment, and the third embodiment, after the user pulls the first movable member 22 to drive the positioning assembly 80 to reach the positioning position, the positioning member 81 can be stopped and abutted against the positioning and cooperating portion 70 under the action of the second elastic member. Therefore, after the positioning member 81 reaches the positioning position, the user can stop applying force to the first movable member 22, but make the positioning member 81 continuously remain in the positioning position through the positioning and cooperating portion 70 until the second stack member 40 is moved away from the first stack member 10. It should be noted that the "positioning position" refers to the position where the positioning member 81 is located when the first arm 814 rotates to abut against the second bottom wall.

[0179] Please refer to again Figures 39 - 43, Further, in order to improve the rotational stability of the rotating seat 224, in this embodiment, the seat limiting member 13 is further provided with two oppositely arranged side auxiliary walls 133 protruding from one side of the base portion 131 facing away from the first bottom wall 115. A connecting hole 1331 is formed in the side auxiliary wall 133. Arc-shaped grooves 22431 are respectively provided on the opposite sides of the support body 2243. The first stacking member 10 further includes an auxiliary rotating shaft (not labeled). One end of the auxiliary rotating shaft is connected to the connecting hole, and the other end can slide in the arc-shaped groove 22431. When the rotating seat 224 rotates along the γ direction with the rotating leg 2244 as the fulcrum and the first engaging portion 222 disengages from the slot 511, the auxiliary rotating shaft can cooperate with the arc-shaped groove to assist the rotation of the rotating seat 224, avoiding the shaking of the rotating seat 224 along the Y direction during the rotation process.

[0180] Please refer to Figure 44 , Further, the present invention also provides a fifth embodiment. The inventive concept and most of the structures of the fifth embodiment are the same as those of the first embodiment, except that: in the fifth embodiment, the bottoms of the first stacking member 10 and the second stacking member 40 are both flat surfaces. The first engaging structure 20 and the third engaging structure 30 include two groups. One group of the first engaging structure 20 and the third engaging structure 30 is arranged on both sides of the top of the first stacking member 10 in the X direction, and the other group is arranged on both sides of the top of the first stacking member 10 in the Y direction; the second engaging structure 50 and the fourth engaging structure 60 include two groups. One group of the second engaging structure 50 and the fourth engaging structure 60 is arranged on both sides of the bottom of the second stacking member in the X direction, and the other group is arranged on both sides of the bottom of the second stacking member in the Y direction. In this way, the stacking and automatic locking between the first stacking member 10 and the second stacking member 40 can also be realized in the X, Y, and Z directions by gravity and / or additional pressure.

[0181] In other words, during use, it is still only necessary to directly place the second stacking member 40 on the first stacking member 10, and then the four first engaging portions 222 can be engaged with the corresponding second engaging portions 51 by gravity, making the stacking system 100 in a locked state. When switching to the unlocked state, one group of the first engaging structure 20 and the third engaging structure 30 can be pulled first, and then the other group of the first engaging structure 20 and the third engaging structure 30 can be pulled to make the positioning members 81 on all four sides reach the positioning positions, and then the second stacking member 40 can be removed from the first stacking member 10.

[0182] Furthermore, the present invention also provides a sixth embodiment. The inventive concept and most of the structures of the sixth embodiment are the same as those of the first embodiment, with the differences being that in the sixth embodiment, the first mating structure 20 and the third mating structure 30 are oppositely arranged at two locations on the top of the first stack 10 along the X direction or the Y direction, and the second mating structure 50 and the fourth mating structure 60 are oppositely arranged at two locations on the bottom of the second stack 40 along the X direction or the Y direction; however, the structure of the third mating structure 30 can be different from that of the first mating structure 20; in this embodiment, the third mating structure 30 includes a first mating portion provided on the top of the first stack 10, and the fourth mating structure 60 includes a second mating portion provided on the bottom of the second stack 40. When the second stack 40 is stacked on the first stack 10, the first mating portion can be engaged with the second mating portion to cooperate with the first mating structure 20 and the second mating structure 50 to restrict the movement of the first stack 10 and the second stack 40 in the X direction, Y direction, and Z direction.

[0183] It can be understood that the first mating portion and the second mating portion can be implemented as clamping plates capable of engaging with each other, or as concave holes and protrusions capable of engaging with each other.

[0184] Optionally, in one of the embodiments, the first mating structure 20 and the third mating structure 30 are oppositely arranged on both sides of the top of the first stack 10 along the X direction or the Y direction, and the second mating structure 50 and the fourth mating structure 60 are oppositely arranged on both sides of the bottom of the second stack 40 along the X direction or the Y direction; the first mating portion and the second mating portion are implemented as clamping plates capable of engaging with each other.

[0185] It can be understood that in other embodiments, the clamping structure of the clamping plate can be changed to correspondingly change the clamping direction, so that after the second mating portion can be engaged with the first mating portion, the movement of the second stack 40 can be restricted in the Z direction and the X direction or the Z direction and the Y direction.

[0186] It can be understood that the manner in which the first mating portion and the second mating portion cooperate with each other can be combined with Embodiment 1. In other words, in other embodiments, a third mating structure 30 having the same structure as the first mating structure 20 can also be provided to cooperate with the first mating structure 20, and a third mating structure 30 having a structure different from that of the first mating structure 20 can also be provided to cooperate with the first mating structure 20. As long as the movement of the second stack 40 in the X direction, Y direction, and Z direction can be restricted ultimately.

[0187] See Figures 45 - 50, the present invention also provides a seventh embodiment. The inventive concept and most of the structure of the seventh embodiment are the same as those of the first embodiment and the sixth embodiment, except that: in the seventh embodiment, the length of the first stack 10 is an integer multiple of the width of the second stack 40. Exemplarily, in this embodiment, the width of the first stack 10 is equal to the length of the second stack 40, and the length of the first stack 10 is twice the width of the second stack 40. In other words, in this embodiment, two second stacks 40 can be stacked in parallel above each first stack 10. It can be understood that in other embodiments, one or more than three second stacks 40 can be stacked above the first stack 10, and the length, width or size of the second stack 40 can be set according to requirements, as long as the stacking and locking between the first stack 10 and the second stack 40 are not affected.

[0188] Compared with the related art, the multiple stacks 1 of the stacking system 100 provided by the present application can be stacked and connected up and down, can be carried and moved simultaneously, and can remain stable during the carrying and moving process, are not easily slipped and separated, save the carrying time, and can also make better use of the storage space during storage.

[0189] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0190] The above-described embodiments only represent several implementation manners of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A stacking system, characterized in that, The stacking system includes a plurality of stack members, and the plurality of stack members include a first stack member and a second stack member. Among them, the first stack member is provided with a first mating structure; the second stack member is provided with a second mating structure adapted to the first mating structure, and one place of the first stack member and the second stack member is restricted by the cooperation of the first mating structure and the second mating structure, so that the first stack member and the second stack member are stacked up and down; at least one of the stack members is a vacuum cleaner.

2. The stacked system according to claim 1, wherein The stack member includes a first connecting body and a second connecting body. The first connecting body can at least constitute the upper surface and / or the lower surface of the stack member; the second connecting body is connected to the first connecting body to form the accommodating space of the stack member, and the materials of the second connecting body and the first connecting body are different.

3. The stacked system according to claim 2, wherein The first connecting body is a plastic part, and the second connecting body is a metal part.

4. The stacked system according to claim 1, wherein The vacuum cleaner includes a dust collection main body in a box structure and a dust collection pipe fitting detachably installed on the dust collection main body. The first mating structure is provided at the top of the dust collection main body and / or the second mating structure is provided at the bottom of the dust collection main body. At least part of the dust collection pipe fitting can be wound around the outer peripheral wall of the dust collection main body or received into the dust collection main body.

5. The stacking system according to claim 4, wherein The dust collection main body includes a housing in a box structure, a dust collection module and an energy storage module. The dust collection module and the energy storage module are both installed in the housing, and the energy storage module is electrically connected to the dust collection module.

6. The stacked system according to claim 1, wherein The stacking system has a locked state. In the locked state, the first stack member and the second stack member can be locked in three directions of X, Y, and Z by the pressure on the upper one.

7. The stacking system according to claim 6, wherein The first mating structure includes a first elastic member and a first movable member. The first elastic member can act on the first movable member elastically. When the second stack member is stacked on the first stack member, the first movable member can move on the first stack member under the pressure of the second stack member; When the second stack member is stacked in place, the first movable member can make the first movable member and the second mating structure engage with each other under the elastic action of the first elastic member, so as to realize the locked state through the pressure of the second stack member.

8. The stacked system according to claim 7, wherein, The first movable member includes a base and a first engaging portion provided on the base. The base is slidably connected to the first stack member. The second mating structure includes a second engaging portion provided on the second stack member. The second engaging portion is provided with a slot; in the locked state, the first engaging portion can be inserted into the slot under the action of the first elastic member; or, The first movable member includes a rotating seat and a first engaging portion provided on the rotating seat. The rotating seat is rotatably connected to the first stack member. The second mating structure includes a second engaging portion provided on the second stack member. The second engaging portion is provided with a slot; in the locked state, the first engaging portion can be inserted into the slot under the elastic action of the first elastic member.

9. The stacking system according to claim 8, wherein The stacking system further includes an unlocked state, in which the second stackable member can be separated from the first stackable member; the stacking system further includes a positioning assembly, and when the positioning assembly is in a positioning position, the stacking system forms the unlocked state; The positioning assembly includes a positioning member, the positioning member is rotatably connected to the second stackable member, the positioning member has a first arm and a second arm with opposite rotation directions, the first arm can be rotated to the positioning position under the action of an external force, and drive the second arm to act on the first movable member in the reverse direction, so that the first movable member rotates away from the second mating structure, thereby switching the stacking system from the locked state to the unlocked state.

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