Trolley, toolbox, tool and connection device mountable to tool or toolbox

Abstract

A trolley (140) comprising a connecting device (100) formed or connected to the trolley (140), the connecting device (100) being arranged to mount a piece (110) to be mounted to the trolley (140), the connecting device (100) comprising: a base (10) formed or connected to the trolley (140), the base (10) forming a receiving cavity (17); a coupling assembly (20) connected to the base (10), the coupling assembly (20) being arranged to connect a piece (110) to be mounted; the coupling assembly (20) comprises: a connecting piece (21) cooperating with the to-be-mounted piece (110) to connect the to-be-mounted piece (110); the connecting assembly (20) at least has a connecting state and a hidden state relative to the base (10), when the connecting assembly (20) is in the connecting state, the connecting piece (21) is in a matched position capable of being matched with the to-be-installed piece (110), and when the connecting assembly (20) is in the hidden state, the connecting piece (21) is in a hidden position separated from the matched position.

Description

Trolley, tool box, tool, and connecting device capable of being mounted on the tool or tool box

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on June 30, 2023, with application number 202310802365.5, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to a connection device, for example, to a connection device that can be mounted to a tool or a tool box. Background Art

[0003] A related art connection device is capable of being mounted to a tool or a tool box.

[0004] When users use tools or toolboxes in a toolbox system, they often need to carry multiple tools or toolboxes to the workplace. In this way, users often stack the tools or toolboxes and transport them to the workplace together. Therefore, some tools, or tools and toolboxes, or toolboxes and toolboxes are connected together through connecting devices. However, in some common working conditions, users need to place large objects or even some irregular objects on the tools or toolboxes. When these objects are placed on the storage surface of the tools or toolboxes, the connecting devices may interfere with the above-mentioned objects. Therefore, we hope to produce a structure that can solve this problem.

[0005] This section provides background information related to the present application which is not necessarily prior art.

[0006] Summary of the Invention

[0007] An object of the present application is to solve or at least alleviate part or all of the above problems. To this end, an object of the present application is to provide a connecting device with a simple structure and convenient operation, which can be installed on a tool or a tool box.

[0008] The present application adopts the following technical solution: a trolley, including a connecting device formed or connected to the trolley, the connecting device is configured to install the part to be installed on the trolley, and is characterized in that the connecting device includes: a base, formed or connected to the trolley, the base is formed with a accommodating cavity; a connecting assembly, connected to the base, the connecting assembly is configured to connect the part to be installed; the connecting assembly includes: a connecting member, which cooperates with the part to be installed to connect the part to be installed; the connecting assembly has at least a connected state and a hidden state relative to the base, when the connecting assembly is in the connected state, the connecting member is in a mating position that can cooperate with the part to be installed, and when the connecting assembly is in the hidden state, the connecting member is in a hidden position that is disengaged from the mating position.

[0009] In some embodiments, the connecting assembly is switched from a connected state to a hidden state relative to the base by rotating, moving, disassembling, or a combination of the two.

[0010] In some embodiments, when the coupling assembly is in the hidden state, the coupling assembly is lower than the upper surface of the base, or lower than the storage surface of the cart.

[0011] In some embodiments, when the coupling assembly is in the connected state, the coupling assembly can be driven to move to the hidden state.

[0012] In some embodiments, the coupling assembly further comprises a driving member, which can be inserted into the base to switch the coupling assembly from the hidden state to the connected state.

[0013] In some embodiments, the connecting assembly further comprises a connecting seat for mounting the connecting member, the connecting seat being pivotally connected to the base, the connecting seat having an end face, and when the connecting assembly is in a connected state, the end face is at least partially in contact with the base, and when the connecting assembly is in a hidden state, the end face is lower than the upper surface of the base, or lower than the storage surface of the cart.

[0014] In some embodiments, the connecting seat of the connecting member is connected to the base, and the connecting assembly switches from a connected state to a hidden state. The connecting assembly needs to be folded upward and then slid downward into the accommodating cavity so that the connecting assembly is lower than the upper surface of the base, or lower than the storage surface of the cart.

[0015] In some embodiments, the driving member further includes a driving surface. During the process of inserting the driving member into the base, the driving surface contacts the connecting assembly and drives the connecting assembly to slide upward until the connecting assembly switches from the hidden state to the connected state.

[0016] In some embodiments, the driving member further includes a driving surface. During the process of inserting the driving member into the base, the driving surface contacts the connecting assembly and drives the connecting assembly to fold upward until the connecting assembly switches from the hidden state to the connected state.

[0017] In some embodiments, the connecting device also includes a first clamping portion and a second clamping portion that cooperate with the connecting piece. The first clamping portion and the second clamping portion are relatively arranged on both sides of the connecting seat. When the connecting assembly is in a connected state, the connecting seat is clamped with the first clamping portion and the second clamping portion, and the connecting piece and the base remain relatively fixed.

[0018] In some embodiments, the connecting member includes a buckle configured to cooperate with the member to be installed, and the buckle is higher than the upper surface of the base in the up-down direction.

[0019] In some embodiments, the connecting assembly further comprises a connecting seat for mounting the connecting member, the connecting seat being pivotally connected to the base, the connecting seat having an end face, and when the connecting assembly is in a connected state, the end face is at least partially in contact with the base, and when the connecting assembly is in a hidden state, the end face is substantially flush with the upper surface of the base, or the end face is substantially flush with the storage surface of the cart.

[0020] In some embodiments, when the coupling assembly is in the hidden state, the coupling assembly is substantially flush with the upper surface of the base, or the coupling assembly is substantially flush with the storage surface of the cart.

[0021] In some embodiments, when the coupling assembly is in the hidden state, the component to be mounted can be directly stacked on the connecting component.

[0022] In some embodiments, when the coupling assembly is in the hidden state, the connecting member is configured to require at least two steps to connect with the member to be mounted.

[0023] A toolbox includes a connecting device formed on or connected to the toolbox, the connecting device is configured to install a to-be-installed part on the toolbox, the connecting device includes: a base formed on or connected to the toolbox, the base is formed with a receiving cavity; a connecting assembly connected to the base, the connecting assembly is configured to connect the to-be-installed part; the connecting assembly includes: a connecting part that cooperates with the to-be-installed part to connect the to-be-installed part; the connecting assembly has at least a connected state and a hidden state relative to the base, when the connecting assembly is in the connected state, the connecting part is in a mating position capable of mating with the to-be-installed part, and when the connecting assembly is in the hidden state, the connecting part is in a hidden position disengaged from the mating position.

[0024] A tool includes a connecting device formed on or connected to the tool, the connecting device is configured to install a part to be installed on a toolbox, the connecting device includes: a base formed on or connected to the tool, the base is formed with a accommodating cavity; a connecting assembly connected to the base, the connecting assembly is configured to connect the part to be installed; the connecting assembly includes: a connecting piece that cooperates with the part to be installed to connect the part to be installed; the connecting assembly has at least a connected state and a hidden state relative to the base, when the connecting assembly is in the connected state, the connecting piece is in a mating position that can cooperate with the part to be installed, and when the connecting assembly is in the hidden state, the connecting piece is in a hidden position that is disengaged from the mating position.

[0025] A connecting device that can be installed to a tool or a toolbox, the connecting device is configured to install a to-be-installed part to the tool or the toolbox, the connecting device comprising: a base, formed or connected to the tool or the toolbox, the base forming a receiving cavity; a connecting assembly, connected to the base, the connecting assembly being configured to connect the to-be-installed part; the connecting assembly comprising: a connecting part, cooperating with the to-be-installed part to connect the to-be-installed part; the connecting assembly having at least a connected state and a hidden state relative to the base, when the connecting assembly is in the connected state, the connecting part is in a mating position capable of mating with the to-be-installed part, and when the connecting assembly is in the hidden state, the connecting part is in a hidden position disengaged from the mating position.

[0026] In some embodiments, the connecting assembly is switched from a connected state to a hidden state relative to the base by rotating, moving, disassembling, or a combination of the two.

[0027] In some embodiments, when the coupling assembly is in the hidden state, the coupling assembly is lower than the upper surface of the base, or lower than the storage surface of the tool or tool box.

[0028] In some embodiments, when the coupling assembly is in the connected state, the coupling assembly can be driven to move to the hidden state.

[0029] In some embodiments, the coupling assembly further comprises a driving member, which can be inserted into the base to switch the coupling assembly from the hidden state to the connected state.

[0030] A connecting device that can be installed to a tool or a toolbox, the connecting device is configured to install a to-be-installed part to the tool or toolbox, and is characterized in that the connecting device includes: a base, formed or connected to the tool or toolbox; a connecting assembly, connected to the base, the connecting assembly is configured to connect the to-be-installed part; the connecting assembly includes: a connecting part, cooperating with the to-be-installed part to connect the to-be-installed part; the connecting assembly has at least a hidden state relative to the base, and when the connecting assembly is in the hidden state, the connecting part is lower than the upper surface of the base, or lower than the placement surface of the tool or toolbox.

[0031] The benefit of the present application lies in: providing an upper connecting device that can be applied to a trolley, tool or toolbox, the connecting component has at least a switchable connection state and a hidden state. When the connecting component is in the connected state, the user can connect the to-be-installed part to the trolley, tool or toolbox through the connecting part; when the connecting component is in the hidden state, the user can place any object on the storage surface of the tool or toolbox without damaging the connecting component. Similarly, the connecting component will not interfere with the object, which increases the diversity of the functions of the trolley, tool or toolbox and is more convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic diagram of the connection device of the present application applied to a trolley;

[0033] FIG2 is a schematic diagram of the connection device of the present application applied to a UTV;

[0034] FIG3 is a schematic diagram of the connecting device of the present application applied to a tool box;

[0035] FIG4 is a perspective view of a first embodiment of the connecting device in the present application, wherein the connecting assembly is in a connected state;

[0036] FIG5 is a perspective view of a position of the connecting assembly in FIG4 during the process of switching from a connected state to a hidden state;

[0037] FIG6 is a perspective view of the connecting assembly in FIG4 in a hidden state;

[0038] FIG7 is a cross-sectional view of the connecting device in FIG4;

[0039] FIG8 is a cross-sectional view of the connecting device in FIG6

[0040] FIG9 is a perspective view of the connection assembly and the base separated in FIG4;

[0041] FIG10 is a perspective view of a second embodiment of the connecting device in the present application, wherein the connecting assembly is in a connected state;

[0042] FIG11 is a perspective view of the connecting assembly in FIG10 in a hidden state;

[0043] FIG12 is a cross-sectional view of the connecting device in FIG10;

[0044] FIG13 is a cross-sectional view of the connecting device in FIG11;

[0045] FIG14 is a perspective view of the connection assembly and the base in FIG10 ;

[0046] FIG15 is a perspective view of the coupling assembly and the base in FIG14 separated from another perspective;

[0047] FIG16 is a perspective view of a third embodiment of the connecting device of the present application, in which the connecting assembly is in a connected state;

[0048] FIG17 is a perspective view of the connecting assembly in FIG16 in a hidden state;

[0049] FIG18 is a cross-sectional view of the connecting device in FIG17;

[0050] FIG19 is a cross-sectional view of the connecting device in FIG16;

[0051] FIG20 is a perspective view of the coupling assembly, the driving member, and the base in FIG16 separated;

[0052] FIG21 is a perspective view of a fourth embodiment of the connecting device in the present application, wherein the connecting assembly is in a connected state;

[0053] FIG22 is a perspective view of the connecting assembly in FIG21 in a hidden state;

[0054] FIG23 is a cross-sectional view of the connecting device in FIG21;

[0055] FIG24 is a cross-sectional view of the connecting device in FIG22;

[0056] FIG25 is a perspective view of the coupling assembly, the driving member, and the base in FIG21 separated;

[0057] FIG26 is a perspective view of the coupling assembly, the driving member, and the base in FIG25 separated from each other;

[0058] FIG27 is a perspective view of a fifth embodiment of the connection device of the present application, wherein the connection assembly is in a connected state;

[0059] FIG28 is a perspective view of the connecting assembly in FIG27 in a hidden state;

[0060] FIG29 is a perspective view of the coupling assembly in FIG27 with the coupling assembly separated upward;

[0061] FIG30 is a perspective view of the coupling assembly in FIG27 with downward installation;

[0062] FIG31 is a partially enlarged view of FIG1 . DETAILED DESCRIPTION

[0063] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the foregoing drawings.

[0064] In this application, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0065] In this application, the term "and / or" describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this application generally indicates that the related objects are in an "and / or" relationship.

[0066] In this application, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without an intermediary, and an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0067] In this application, it will be understood by those skilled in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. associated with a specific value. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0068] In this application, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0069] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front and lower back, etc.

[0070] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0071] As shown in Figures 1-4 and 31, a connecting device 100 is shown. The connecting device 100 can install a component 110 to be installed on a tool 120 or a toolbox 130. The connecting device 100 includes a base 10 and a connecting assembly 20. The base 10 has a receiving cavity 17 formed therein, and the connecting assembly 20 can be at least partially located within the receiving cavity 17. The connecting assembly 20 is configured to connect to the component 110 to be installed; the connecting assembly 20 can move relative to the base 10, and the movement here includes one or more combinations of rotation, movement, and disassembly. The base 10 is formed or connected to the tool 120 or the toolbox 130. It should be noted that the rotation here includes flipping, folding, rotating, etc., and the movement here also includes curved movement, linear movement, and reciprocating movement.

[0072] The coupling assembly 20 moves relative to the base 10. During this movement, the coupling assembly 20 has at least a connected state and a concealed state relative to the base 10. When the coupling assembly 20 is in the connected state, the connecting member 21 of the coupling assembly 20 is in a mating position capable of mating with the component to be mounted 110. This can also be understood as meaning that when the coupling assembly 20 is in the mating position, the component to be mounted 110 can be connected to the tool 120 or toolbox 130. When the coupling assembly 20 is in the concealed state, the connecting member 21 is in a concealed position separated from the mating position. This can also be understood as meaning that when the coupling assembly 20 is in the concealed position, the component to be mounted 110 cannot be connected to the tool 120 or toolbox 130. However, the component to be mounted can be directly stacked on the coupling assembly 20.

[0073] The components to be mounted 110 herein include, but are not limited to, bench-type tools 120, charging devices, power supply devices, lighting devices, cooling devices, heating devices, air blowers, tool boxes 130, display components, and the like. The tools 120 herein may be DC or AC tools 20, including, but not limited to, UTVs, riding lawn mowers, electric vehicles, and electric motorcycles. They may also be tools powered by a mixture of hydrocarbons such as diesel, gasoline, or kerosene, including, but not limited to, tractors. They may also be non-energy-powered tools 120, including, but not limited to, bicycles, carts 140, trailers, fixed workbenches, and storage racks. The tool boxes 130 also include, but are not limited to, push tool boxes 130, self-propelled tool boxes 130, foldable tools 120, standard power tool storage boxes 130, crates, and drawer boxes. In other words, any connection device may be mounted on the tool or component to be mounted.

[0074] With this configuration of the connection device 100, when the user needs to use its connection function, the connection assembly 20 is in the connected state. When the user does not need to use its connection function, the connection assembly 20 is in the hidden state. This protects the connection assembly 20 and facilitates user selection. As a feasible embodiment, when the connection assembly 20 is in the hidden state, the connection member 21 is lower than the upper surface 11 of the base 10, or lower than the storage surface 121 of the tool 120 or the tool box 130. It will be understood that the connection assembly 20 has at least two states relative to the base 10: a connected state and a hidden state. When the connection assembly 20 is in the connected state, the connection member 21 at least partially protrudes from the upper surface 11 of the base 10, or the tool 120 or the storage surface 121 of the tool 120, and the connection member 21 can be connected to the to-be-mounted component 110. When the connecting assembly 20 is in the hidden state, the connecting member 21 is lower than the upper surface 11 of the base 10, or lower than the storage surface 121 of the tool 120 or toolbox 130. Furthermore, when the connecting assembly 20 is in the hidden state, the connecting assembly 20 is lower than the upper surface 11 of the base 10, or lower than the storage surface 121 of the tool 120 or toolbox 130. Alternatively, when the connecting assembly 20 is in the hidden state, the connecting assembly 20 may be flush with the upper surface 11 of the base 10, or flush with the storage surface 121 of the tool 120 or toolbox 130. It should be noted that in some feasible embodiments, when the connecting assembly 20 is in the hidden state, that is, when the connecting member 21 is lower than the upper surface 11 of the base 10, or lower than the storage surface 121 of the tool 120 or toolbox 130, the to-be-mounted component 110 may also be connected to the connecting member 21. When the base 10 is formed on the tool 120 or toolbox 130 or is detachably connected to the tool 120 or toolbox 130, the upper surface 11 of the base 10 is lower than the storage surface 121 of the tool 120 or toolbox 130. The storage surface 121 of the tool 120 or toolbox 130 can be used to directly place items, etc., or used as a workbench. The connecting component 20 is arranged so that when it is in a hidden state, the connecting component 20 is lower than the upper surface 11 of the base 10 or the storage surface 121 of the tool 120 or toolbox 130. In this way, when the user places items on the storage surface 121 of the tool 120 or toolbox 130 or performs other operations, the connecting component 20 will not cause any obstruction. At the same time, it prevents the user from damaging the connecting component 20 when stacking items or performing other operations, which can further extend the service life of the connecting component 20.

[0075] In order to clearly describe the technical solution of the present application and the effect brought about by the connecting device 100, a trolley 140 is taken as an example here, but it is not limited to the trolley 140, and it can also be other tools 120. Similarly, the tool box 130 is taken as an example of the part to be installed 110 here, but it is not limited to the tool box 130, and it can also be the other items mentioned above.

[0076] FIG1 shows a trolley 140 suitable for transporting and storing a toolbox 130. Considering the work environment, a user typically needs to carry tools 120 and other items to be used when going to a work site. To facilitate carrying and transporting these tools 120, the user typically uses a toolbox 130 to store these tools 120. The user can place, hang, or secure the toolbox 130 or tools 120 on the trolley 140. This allows the user to use the trolley 140 to transport the toolbox 130 to the work site or to store the tools 120 and other items at the work site.

[0077] The trolley 140 includes a first support plate 141, a second support plate 142, a travel assembly 143, and a support assembly 145. The first support plate 141 and the second support plate 142 are spaced apart, the second support plate 142 is arranged on the upper side of the first support plate 141, the travel assembly 143 is connected to the lower side of the first support plate 141, and the support assembly 145 connects the first support plate 141 and the second support plate 142.

[0078] The connecting device 100 is installed on the first support plate 141 and / or the second support plate 142. As an embodiment, the base 10 is formed on the first support plate 141 and / or the second support plate 142. As another embodiment, the base 10 is detachably connected to the first support plate 141 and / or the second support plate 142, that is, the base 10 can be connected to the first support plate 141 and / or the second support plate 142 by means of one or a combination of screws, rivets, interference fit, clamping, and mortise and tenon joints. The connection method between the base 10 and the first support plate 141 and / or the second support plate 142 is not limited here, as long as the base 10 can be fixedly connected to the first support plate 141 and / or the second support plate 142.

[0079] As an embodiment, the base 10 is formed directly on the first support plate 141. Of course, to ensure the stability of the connection, multiple connecting devices 100 can be provided on the first support plate 141. When the user needs to connect the tool box 130 to the first support plate 141, the user only needs to switch the connecting assembly 20 to the connected state to fix the tool box 130 to the first support plate 141. When the user does not need to connect the tool box 130 to the first support plate 141, the user only needs to switch the connecting assembly 20 to the hidden state. In this way, the user can stack other tools 120 on the first support plate 141 without worrying about other tools 120 damaging the connecting assembly 20 during transportation or handling. In other words, there are no other protruding structures on the first support plate 141 at this time. The user can switch the first support member 141 to a flat plate, and directly stack some of the items to be installed.

[0080] In order to more stably install the toolbox 130 on the first support plate 141, connecting devices 100 are set on opposite sides of the first support plate 141. Of course, if the length of the first support plate 141 is sufficient, multiple pairs of oppositely arranged connecting devices 100 can be set on the first support plate 141 to install the toolbox 130 or other items.

[0081] As an embodiment, the coupling assembly 20 includes a connector 21, a positioning member 22, and a connector seat 23. The positioning member 22 is fixedly connected to the toolbox 130 or formed integrally therewith, and the connector seat 23 is mounted on the base 10. The connector seat 23 is fixedly connected to the base 10. Of course, since the base 10 is directly formed on the first support plate 141, it can also be understood that the connector seat 23 is fixedly connected to the first support plate 141. The connector 21 is disposed in the connector seat 23 and is movable relative to the connector seat 23. The connector 21 has at least a separation position relative to the connector seat 23 in which the positioning member 22 is kept separated from the connector 21, and an interlocking position in which the connector 21 is interlocked with the positioning member 22. The connector 21 can be driven to switch between the separation position and the interlocking position. Illustratively, the connector 21 is a buckle 24, and the positioning member 22 is a groove 25. When the user needs to connect the toolbox 130 to the first support plate 141, they simply snap the buckle 24 into the groove 25. When the user needs to remove the toolbox 130 from the first support plate 141, they simply disengage the buckle 24 from the groove 25. When the coupling assembly 20 is in the connected state, the buckle 24 is higher than the upper surface 11 of the base in the vertical direction. Of course, other structures may also be used, and the connection method between the connector 21 and the toolbox 130 is not limited here, as long as the toolbox 130 can be connected and disconnected from the coupling assembly 20.

[0082] FIG. 4 to FIG. 9 show an embodiment in which the connecting assembly 20 is switched from a connected state to a hidden state relative to the base 10 .

[0083] In order to clearly illustrate the technical solution of this embodiment, the terms "up", "down", "front", "rear", "left" and "right" are defined as shown in Figure 4. It should be noted that, unless otherwise specified, the terms "up", "down", "front", "rear", "left" and "right" mentioned below refer to the state of the connecting device when it is stationary as shown in Figure 4.

[0084] When the user needs to switch the connecting assembly 20 from the connected state to the hidden state, the user can fold the connecting assembly 20 upwards and then slide the connecting assembly 20 downwards until the connecting assembly 20 is in the accommodating cavity 17 .

[0085] Exemplarily, the base 10 includes a first connecting plate 12, a second connecting plate 13, a third connecting plate 14, and a fourth connecting plate 15, which are spaced apart from each other, and a fifth connecting plate 16 connecting the first connecting plate 12, the second connecting plate 13, the third connecting plate 14, and the fourth connecting plate 15. The fifth connecting plate 16 faces the upper surface 11 of the base 10. The third connecting plate 14 connects one end of the first connecting plate 12 and the second connecting plate 13, and the fourth connecting plate 15 connects the other ends of the first connecting plate 12 and the second connecting plate 13. In the vertical direction, the length of the first connecting plate 12 is shorter than that of the second connecting plate 13, and the lengths of the third connecting plate 14 and the fourth connecting plate 15 are substantially the same as the length of the second connecting plate 13. In other words, the first connecting plate 12, the third connecting plate 14, and the fourth connecting plate 15 form a substantially concave shape at their ends. The inner walls of the first connecting plate 12, the second connecting plate 13, the third connecting plate 14, the fourth connecting plate 15, and the fifth connecting plate 16 substantially define an upwardly open, semi-enclosed accommodating cavity 17, within which the coupling assembly 20 can be substantially accommodated. The upper end of the first connecting plate 12 includes a supporting surface 122. When the coupling assembly 20 is in the connected state, the supporting surface 122 abuts against the connecting seat 23. This provides a stable support for the coupling assembly 20 when the toolbox 130 is mounted on the coupling assembly 20. Of course, the first connecting plate 12 may also have other structures. For example, the upper surface 11 of the first connecting plate 12 may be partially recessed to form the supporting surface 122. The supporting surface 122 is configured to abut against the connecting seat 23 when the coupling assembly 20 is in the connected state. Alternatively, the fifth connecting plate 16 may have a protruding portion to form the supporting surface 122. The supporting surface 122 is configured to abut against the connecting seat 23 when the coupling assembly 20 is in the connected state.

[0086] The first connecting plate 12 corresponds to the first connecting inner wall 123, the second connecting plate 13 corresponds to the second connecting inner wall 131, the third connecting plate 14 corresponds to the third connecting inner wall 146, the fourth connecting plate 15 corresponds to the fourth connecting inner wall 151, and the fifth connecting plate 16 corresponds to the fifth connecting inner wall 161. Because the base 10 is directly formed on the first support plate 141 of the trolley 140, that is, the first connecting plate 12, the second connecting plate 13, the third connecting plate 14, the fourth connecting plate 15, and the fifth connecting plate 16 are directly formed by the first support plate 141.

[0087] The third connecting inner wall 146 and the fourth connecting inner wall 151 are connected or formed with corresponding supporting ends with substantially identical structures, specifically, a first supporting end and a second supporting end 152 , both of which protrude outwards. The two sides of the connecting seat 23 are respectively connected to the first support end and the second support end 152. For example, the two sides of the connecting seat 23 form a long groove 25 with basically the same structure, specifically a first groove 26 and a second groove 25. Both ends of the first groove 26 are arc-shaped, and the arcs on both sides are the first end 28 and the second end 29. In the extension direction of the first groove 26, the first end 28 is on the side close to the connecting member 21. Similarly, both ends of the second groove 25 are also arc-shaped, and the arcs on both sides are the third end and the fourth end. In the extension direction of the first groove 26, the third end is on the side close to the connecting member 21. Here, the first groove 26 abuts against the first support end, and the second groove 25 abuts against the second support end 152. The connection component 20 is restricted and guided by the first support end and the second support end 152, so that the connection component 20 can achieve state switching.

[0088] The third connecting inner wall 146 and the fourth connecting inner wall 151 are both connected to or formed with stoppers of substantially identical structure, namely, a first stopper 148 and a second stopper 153. A clamping portion, namely, a first clamping portion 33 and a second clamping portion, is further provided on both sides of the connecting seat 23. The first stopper 148 and the second clamping portion are adapted to mate with each other, and similarly, the second stopper 153 and the second clamping portion are adapted to mate with each other. When the first stopper 148 and the second clamping portion abut against each other, and the second stopper 153 and the second clamping portion abut against each other, the coupling assembly 20 is in a connected state. The first stopper 148 and the second stopper 153 are also used to prevent the coupling assembly 20 from moving when there is no external driving force.

[0089] The original state of the coupling assembly 20 is defined herein as the hidden state, in which the connector 21 is within the accommodating cavity 17, the first end 28 of the first groove 26 abuts the first support end, and the third end of the second groove 25 abuts the second support end 152. When the user wishes to switch the coupling assembly 20 to the connected state, the user needs to lift the coupling assembly 20 upward, separating the first end 28 from the first support end, the third end from the second support end 152, and continue lifting the coupling assembly 20 upward until the first support end 29 abuts the second support end 29, and the second support end 152 abuts the fourth support end. The upward movement then stops, and the user flips the coupling assembly 20 outward with the contact point of the first support end 29 as the axis until the first stop portion 148 abuts the second clamping portion, and the second stop portion 153 abuts the second clamping portion, thereby switching the coupling assembly 20 from the hidden state to the connected state. When the user needs to switch the coupling assembly 20 from the connected state to the hidden state, they simply flip it upward with the contact point as the axis until the extension direction of the groove 25 is roughly parallel to the vertical direction. Then, the external force can be removed. At this time, the coupling assembly 20 moves downward to the hidden state under the action of gravity, guided by the first and second support ends 152. At this point, the switch is completed.

[0090] When the coupling assembly 20 is in the concealed state, the connecting base 23 has at least one upward-facing surface, defined as an end surface 35. In the vertical direction, the end surface 35 is the farthest from the fifth connecting plate 16. The end surface 35 is lower than the surface of the first support plate 141, that is, lower than the storage surface 121 of the first support plate 141. This ensures that when a user places items on the first support plate 141, the coupling assembly 20 does not prevent the user from placing items on the first connecting plate 12. Furthermore, items placed on the first connecting plate 12 will not damage the coupling assembly 20 during transportation or handling. When the user needs to use the connector 21, they simply switch the coupling assembly 20 to the connected state.

[0091] Figures 10 to 15 illustrate a second embodiment of switching the coupling assembly 210 from a connected state to a concealed state relative to the base 220. It should be noted that the second embodiment differs from the first embodiment only in the switching method, and the specific connection structure between the coupling assembly 210 and the base 220 is different. Only the differences between the second embodiment and the first embodiment are described here; for other structures, please refer to the previous text.

[0092] In order to clearly illustrate the technical solution of this embodiment, the terms "up", "down", "front", "rear", "left" and "right" are defined as shown in Figure 10. It should be noted that, unless otherwise specified, the terms "up", "down", "front", "rear", "left" and "right" mentioned below refer to the state of the connecting device when it is at rest as shown in Figure 10.

[0093] When the user needs to switch the connecting assembly 210 from the connected state to the hidden state, the user can fold the connecting assembly 210 downward until the connecting assembly 210 is in the accommodating cavity 226 .

[0094] Exemplarily, the base 220 includes a first connecting plate 221, a second connecting plate 222, a third connecting plate 223, and a fourth connecting plate 224, which are spaced apart from each other, and a fifth connecting plate 225 connecting the first connecting plate 221, the second connecting plate 222, the third connecting plate 223, and the fourth connecting plate 224. The fifth connecting plate 225 faces the upper surface of the base 220. The third connecting plate 223 connects one end of the first connecting plate 221 and the second connecting plate 222, and the fourth connecting plate 224 connects the other ends of the first connecting plate 221 and the second connecting plate 222. In the vertical direction, the length of the first connecting plate 221 is shorter than that of the second connecting plate 222, while the lengths of the third connecting plate 223 and the fourth connecting plate 224 are substantially the same as those of the second connecting plate 222. In other words, the first connecting plate 221, the third connecting plate 223, and the fourth connecting plate 224 form a substantially concave shape at their ends. The inner walls of the first connecting plate 221, the second connecting plate 222, the third connecting plate 223, the fourth connecting plate 224, and the fifth connecting plate 225 substantially form an upwardly open semi-enclosed accommodating cavity 226, within which the coupling assembly 210 can be substantially accommodated. The upper surface of the first connecting plate 221 can be partially recessed to form a supporting surface, which is configured to abut against the connecting seat when the coupling assembly 210 is in the connected state. Of course, the first connecting plate 221 can also have other structures, such as a supporting surface at the upper end of the first connecting plate 221, which abuts against the connecting seat when the coupling assembly 210 is in the connected state. In this way, when the toolbox is installed on the coupling assembly 210, the supporting surface can provide a stable support for the coupling assembly 210. Of course, the fifth connecting plate 225 can also have a protruding portion to form a supporting surface, which is configured to abut against the connecting seat when the coupling assembly 210 is in the connected state.

[0095] The first connecting plate 221 corresponds to the first connecting inner wall 230, the second connecting plate 222 corresponds to the second connecting inner wall 231, the third connecting plate 223 corresponds to the third connecting inner wall 232, the fourth connecting plate 224 corresponds to the fourth connecting inner wall 233, and the fifth connecting plate 225 corresponds to the fifth connecting inner wall 234. Because the base 220 is directly formed on the first support plate of the cart, that is, the first connecting plate 221, the second connecting plate 222, the third connecting plate 223, the fourth connecting plate 224, and the fifth connecting plate 225 are directly formed by the first support plate.

[0096] The third connecting inner wall 232 and the fourth connecting inner wall 233 are connected or formed with corresponding support ends of substantially identical structure, specifically, a first support end 235 and a second support end 236. The first support end 235 and the second support end 236 both protrude outward. The two sides of the connecting base are connected to the first support end 235 and the second support end 236, respectively. For example, the two sides of the connecting base form a first groove 237 and a second groove 238 that are adapted to the first support end 235 and the second support end 236. The first support end 235 and the second support end 236 are cylindrical protrusions, and the first groove 237 and the second groove 238 are cylindrical grooves. The first support end 235 abuts the first groove 237, and the second support end 236 abuts the second groove 238. The coupling assembly 210 flips around the axis of the first support end 235 or the second support end 236, thereby switching between states. Of course, the first supporting end 235 and the second supporting end 236 may be provided on the connecting seat, and the first groove 237 and the second groove 238 may be provided on the third connecting inner wall 232 and the fourth connecting inner wall 233 .

[0097] The third connecting inner wall 232 and the fourth connecting inner wall 233 are both connected or formed with stop parts with basically the same structure, which are the corresponding first stop part 241 and the second stop part 242, and the corresponding third stop part 243 and the fourth stop part 244 respectively. There are also clamping parts on both sides of the connecting seat, which are the first clamping part 245 and the second clamping part 246 respectively. The first stop part 241 and the first clamping part 245 can be adapted to each other, or the third stop part 243 and the first clamping part 245 can be adapted to each other, and similarly, the second stop part 242 and the second clamping part 246 can also be adapted to each other, or the fourth stop part 244 and the second clamping part 246 can be adapted to each other. When the first stopper 241 abuts the first engaging portion 245, and the second stopper 242 abuts the second engaging portion 246, the coupling assembly 210 is in a connected state. The first and second stopper 241, 242 also prevent the coupling assembly 210 from moving when no external force is applied. When the third stopper 243 abuts the first engaging portion 245, and the fourth stopper 244 abuts the second engaging portion 246, the coupling assembly 210 is in a hidden state. The third and fourth stopper 243, 244 also prevent the coupling assembly 210 from moving when no external force is applied.

[0098] When the coupling assembly 210 is in the hidden state, the connector has at least one upward-facing surface, defined as an end surface 247. In the vertical direction, end surface 247 is the farthest from the fifth connecting plate 225. End surface 247 is lower than the surface of the first support plate, that is, lower than the storage surface of the first support plate. This ensures that when a user places items on the first support plate, the coupling assembly 210 will not prevent the user from placing items on the first connecting plate 221. Furthermore, items placed on the first connecting plate 221 will not damage the coupling assembly 210 during transportation or handling. When the user needs to use the connector, they simply switch the coupling assembly 210 to the connected state.

[0099] The original state of the coupling assembly 210 is defined herein as the hidden state, in which the connector is within the accommodating cavity 226. When the user wishes to switch the coupling assembly 210 to the connected state, the user needs to fold the coupling assembly 210 upwards, axially around the contact point between the first support end 235 and the first groove 237, until the end face 247 of the coupling assembly 210 abuts against the abutting surface of the first connecting plate 221, and the coupling assembly 210 stops rotating, thereby switching the coupling assembly 210 from the hidden state to the connected state. When the user wishes to switch the coupling assembly 210 from the connected state to the hidden state, the user simply rotates the coupling assembly 210 downwards, axially around the contact point, until the coupling assembly 210 cannot rotate any further. The switch is now complete.

[0100] Figures 16 to 20 illustrate a third embodiment of switching the coupling assembly from a connected state to a concealed state relative to the base 320. It should be noted that the only difference between Example 3 and Example 1 lies in the switching method, not the specific connection structure between the coupling assembly and the base 320. This section only describes the differences between Example 3 and Example 1; for other structures, please refer to the previous section.

[0101] In order to clearly illustrate the technical solution of this embodiment, the terms "up", "down", "front", "rear", "left" and "right" are defined as shown in Figure 16. It should be noted that, unless otherwise specified, the terms "up", "down", "front", "rear", "left" and "right" mentioned below refer to the state of the connecting device when it is at rest as shown in Figure 16.

[0102] The connecting assembly also includes a driving member 310. When the user needs to switch the connecting assembly from the connected state to the hidden state, the user can pull out the driving member 310. At this time, the connecting assembly moves downward under the action of gravity until the connecting assembly is in the accommodating cavity 326.

[0103] Exemplarily, the base 320 includes a first connecting plate 321, a second connecting plate 322, a third connecting plate 323, and a fourth connecting plate 324, which are spaced apart from each other, and a fifth connecting plate 325 connecting the first, second, third, and fourth connecting plates 321, 322, 323, and 324. The fifth connecting plate 325 faces the upper surface of the base 320. The third connecting plate 323 connects one end of the first and second connecting plates 321, 322, and the fourth connecting plate 324 connects the other ends of the first and second connecting plates 321, 322. In the vertical direction, the length of the first connecting plate 321 is shorter than that of the second connecting plate 322, while the lengths of the third and fourth connecting plates 323 and 324 are substantially the same as those of the second connecting plate 322. In other words, the first, third, and fourth connecting plates 321, 323, and 324 form a substantially concave shape at their ends. The inner walls of the first connecting plate 321, the second connecting plate 322, the third connecting plate 323, the fourth connecting plate 324, and the fifth connecting plate 325 substantially define an upwardly open, semi-enclosed accommodating cavity 326, within which the coupling assembly can be substantially accommodated. A recessed accommodating groove 327 is formed on the first connecting plate 321, which allows the driving member 310 to slide back and forth. The first connecting plate 321 corresponds to the first connecting inner wall, the second connecting plate 322 corresponds to the second connecting inner wall 331, the third connecting plate 323 corresponds to the third connecting inner wall 332, the fourth connecting plate 324 corresponds to the fourth connecting inner wall 333, and the fifth connecting plate 325 corresponds to the fifth connecting inner wall 334. Because the base 320 is directly formed on the first support plate of the cart, the first connecting plate 321, the second connecting plate 322, the third connecting plate 323, the fourth connecting plate 324, and the fifth connecting plate 325 are directly formed by the first support plate.

[0104] The third connecting inner wall 332 and the fourth connecting inner wall 333 are connected or formed with corresponding long grooves, specifically a first groove 335 and a second groove 336. The first groove 335 and the second groove 336 are both recessed inward. The two sides of the connecting base respectively cooperate with the first groove 335 and the second groove 336. For example, protrusions are formed on both sides of the connecting base, specifically a first support end and a second support end 338. The two ends of the first groove 335 are a first end 341 and a second end 342. The first groove 335 extends generally in the vertical direction, with the first end 341 located below the second end 342. Similarly, the two ends of the second groove 336 are a third end and a fourth end. The second groove 336 also extends in the vertical direction, with the third end located below the fourth end. Due to the restriction and guidance of the first groove 335 and the second groove 336, the bottom of the connecting seat of the connecting assembly has a driving surface 345 and a supporting surface 346 that cooperate with the driving member 310. The driving member 310 applies force to the driving surface 345 to make the connecting assembly move upward until the front end surface 349 of the driving member 310 abuts against the second connecting inner wall 331, and the connecting assembly stops moving. At this time, the supporting surface 346 of the connecting seat abuts against the upper top surface 348 of the driving member 310. Of course, when the driving member 310 is withdrawn, the connecting assembly loses the external force and moves downward under the action of gravity until the supporting surface 346 abuts against the fifth connecting inner wall 334.

[0105] When the coupling assembly is in the hidden state, the connector has at least one upward-facing surface, defined as end surface 347. End surface 347 is furthest from the fifth connecting plate 325 in the vertical direction, and end surface 347 is lower than the surface of the first support plate, that is, lower than the storage surface of the first support plate. This ensures that when a user places items on the first support plate, the coupling assembly will not prevent the user from placing items on the first connecting plate 321. Furthermore, items placed on the first connecting plate 321 will not be damaged by the coupling assembly during transportation or handling. When the user needs to use the connector, they simply switch the coupling assembly to the connected state.

[0106] The original state of the coupling assembly is defined herein as the hidden state, in which the coupling member is within the accommodating cavity 326. The first end 341 of the first groove 335 abuts the first support end, and the third end of the second groove 336 abuts the second support end 338. When a user wishes to switch the coupling assembly to the connected state, the user inserts the driver 310 into the accommodating groove 327 until it abuts the driving surface 345 of the connector. The driver 310 is then driven by continued force. The force applied to the driving surface 345 forces the coupling assembly upward until the first support end abuts the second end 342 of the first groove 335 and the second support end 338 abuts the fourth end of the second groove 336. Simultaneously, the abutting surface 346 of the connector abuts the upper surface 348 of the driver 310, and the front end 349 of the driver 310 abuts the second connecting inner wall 331, thereby switching the coupling assembly from the hidden state to the connected state. When the user needs to switch the connecting assembly from the connected state to the hidden state, they only need to withdraw the driving member 310. The abutting surface 346 loses its external force and the connecting assembly moves downward under the action of gravity until the first supporting end abuts the first end 341 of the first groove 335, the second supporting end 338 abuts the third end of the second groove 336, and the abutting surface 346 of the connecting seat abuts the fifth connecting inner wall 334. At this time, the connecting assembly is in the hidden state. At this point, the switching is completed.

[0107] Figures 21 to 26 illustrate a fourth embodiment of switching the coupling assembly from a connected state to a concealed state relative to the base 420. It should be noted that the fourth embodiment differs from the first embodiment only in the switching method, not in the specific connection structure between the coupling assembly and the base 420. This section only describes the differences between the fourth embodiment and the first embodiment; for other structures, please refer to the previous section.

[0108] In order to clearly illustrate the technical solution of this embodiment, the terms "up", "down", "front", "rear", "left" and "right" are defined as shown in Figure 21. It should be noted that, unless otherwise specified, the terms "up", "down", "front", "rear", "left" and "right" mentioned below refer to the state of the connecting device when it is at rest as shown in Figure 21.

[0109] The connecting assembly also includes a drive member 410. When the user needs to switch the connecting assembly from a connected state to a hidden state, the user can pull out the drive member 410. At this time, the connecting assembly flips downward under the action of gravity until the connecting assembly is in the accommodating cavity 426.

[0110] Exemplarily, the base 420 includes a first connecting plate 421, a second connecting plate 422, a third connecting plate 423, and a fourth connecting plate 424, which are spaced apart from each other, and a fifth connecting plate 425 connecting the first, second, third, and fourth connecting plates 421, 422, 423, and 424. The fifth connecting plate 425 faces the upper surface of the base 420. The third connecting plate 423 connects one end of the first and second connecting plates 421, 422, and the fourth connecting plate 424 connects the other ends of the first and second connecting plates 421, 422. In the vertical direction, the length of the first connecting plate 421 is shorter than that of the second connecting plate 422, while the lengths of the third and fourth connecting plates 423 and 424 are substantially the same as those of the second connecting plate 422. In other words, the first, third, and fourth connecting plates 421, 423, and 424 form a substantially concave shape at their ends. The inner walls of the first connecting plate 421, the second connecting plate 422, the third connecting plate 423, the fourth connecting plate 424, and the fifth connecting plate 425 substantially define an upwardly open, semi-enclosed accommodating cavity 426, within which the coupling assembly can be substantially accommodated. A recessed accommodating groove 427 is formed on the first connecting plate 421, which allows the driving member 410 to slide back and forth. The first connecting plate 421 corresponds to the first connecting inner wall 430, the second connecting plate 422 corresponds to the second connecting inner wall 431, the third connecting plate 423 corresponds to the third connecting inner wall 432, the fourth connecting plate 424 corresponds to the fourth connecting inner wall 433, and the fifth connecting plate 425 corresponds to the fifth connecting inner wall 434. Because the base 420 is directly formed on the first support plate of the cart, the first connecting plate 421, the second connecting plate 422, the third connecting plate 423, the fourth connecting plate 424, and the fifth connecting plate 425 are directly formed by the first support plate.

[0111] The third connecting inner wall 432 and the fourth connecting inner wall 433 are connected or formed with corresponding support ends, specifically, a first support end 437 and a second support end 438. Both the first support end 437 and the second support end 438 protrude outward. The connecting base is connected to the first and second support ends 437 and 438 on either side. For example, the connecting base forms first and second grooves 436 on either side that mate with the first and second support ends 437 and 438. The first and second support ends 437 and 438 are cylindrical protrusions, and the first and second grooves 436 are cylindrical grooves. The first support end 437 abuts the first groove, and the second support end 438 abuts the second groove 436. The coupling assembly rotates about the axis of the first and second support ends 437 and 438 to switch between states. Alternatively, the first and second support ends 437 and 438 may be provided on the connecting base, while the first and second grooves 436 are provided on the third and fourth connecting inner walls 432 and 433. The driving member 410 includes an upper top surface 441 , front end surfaces 446 and 442 , and an intermediate surface 443 connecting the upper top surface 441 and the front end surfaces 446 and 442 . The connecting seat has a driving surface 444 cooperating with the intermediate surface 443 and a supporting surface 445 cooperating with the upper top surface 441 .

[0112] When the coupling assembly is in the hidden state, the connector has at least one upward-facing surface, defined as end surface 446. End surface 446 is furthest from the fifth connecting plate 425 in the vertical direction, and end surface 446 is lower than the surface of the first support plate, that is, lower than the storage surface of the first support plate. This ensures that when a user places items on the first support plate, the coupling assembly will not prevent the user from placing items on the first connecting plate 421. Furthermore, items placed on the first connecting plate 421 will not be damaged by the coupling assembly during transportation or handling. When the user needs to use the connector, they simply switch the coupling assembly to the connected state.

[0113] The original state of the coupling assembly is defined herein as the hidden state, in which the coupling member is within the accommodating cavity 426, with the first end of the first groove abutting the first support end 437, and the third end of the second groove 436 abutting the second support end 438. When the user wishes to switch the coupling assembly to the connected state, the user needs to insert the driver 410 into the accommodating groove 427 until the intermediate surface 443 abuts the driving surface 444 of the connecting seat, and then continue to apply force to drive the driver 410. The force applied to the driving surface 444 causes the coupling assembly to flip upward about the axis of the first support end 437 or the second support end 438 until the abutting surface 445 of the connecting seat abuts the upper top surface 441 of the driver 410, and the front end surfaces 446-442 of the driver 410 abut against the second connecting inner wall 431, thereby switching the coupling assembly from the hidden state to the connected state. When the user needs to switch the connecting assembly from the connected state to the hidden state, they only need to withdraw the driving member 410. The abutting surface 445 loses its external force and the connecting assembly flips downward under the action of gravity about the axis of the first supporting end 437 or the second supporting end 438 until the abutting surface 445 of the connecting seat abuts against the fifth connecting inner wall 434. At this time, the connecting assembly is in the hidden state. At this point, the switching is completed.

[0114] Figures 27 to 30 illustrate a fifth embodiment of switching the coupling assembly from a connected state to a concealed state relative to the base 510. It should be noted that the fifth embodiment differs from the first embodiment only in the switching method, not in the specific connection structure between the coupling assembly and the base 510. This section only describes the differences between the fifth embodiment and the first embodiment; for other structures, please refer to the previous section.

[0115] In order to clearly illustrate the technical solution of this embodiment, the terms "up", "down", "front", "rear", "left" and "right" are defined as shown in Figure 27. It should be noted that, unless otherwise specified, the terms "up", "down", "front", "rear", "left" and "right" mentioned below refer to the state of the connecting device when it is stationary as shown in Figure 27.

[0116] When the user needs to switch the connecting assembly from the connected state to the hidden state, the user can remove it from the accommodating cavity 516 .

[0117] Exemplarily, the base 510 includes a first connecting plate 511, a second connecting plate 512, a third connecting plate 513, and a fourth connecting plate 514, which are spaced apart from each other, and a fifth connecting plate 515 connecting the first connecting plate 511, the second connecting plate 512, the third connecting plate 513, and the fourth connecting plate 514. The fifth connecting plate 515 faces the upper surface of the base 510. The third connecting plate 513 connects one end of the first connecting plate 511 and the second connecting plate 512, and the fourth connecting plate 514 connects the other ends of the first connecting plate 511 and the second connecting plate 512. In the vertical direction, the length of the first connecting plate 511 is shorter than that of the second connecting plate 512, and the lengths of the third connecting plate 513 and the fourth connecting plate 514 are substantially the same as those of the second connecting plate 512. Alternatively, the first connecting plate 511, the third connecting plate 513, and the fourth connecting plate 514 may be understood to form a substantially concave shape at their ends. The inner walls of the first connecting plate 511, the second connecting plate 512, the third connecting plate 513, the fourth connecting plate 514, and the fifth connecting plate 515 substantially form an upwardly open semi-enclosed accommodating cavity 516, within which the coupling assembly can be substantially accommodated. The first connecting plate 511 has a support surface 517 on its upper surface. When the coupling assembly is in the connected state, the support surface 517 abuts against the connecting seat. In this way, when the toolbox is installed on the coupling assembly, the support surface 517 can form a stable support for the coupling assembly. Of course, the first connecting plate 511 can also have other structures. For example, the upper surface of the first connecting plate 511 can be partially recessed to form a support surface 517, which is configured to abut against the connecting seat when the coupling assembly is in the connected state. Of course, the fifth connecting plate 515 can also have a protruding portion to form a support surface 517, which is configured to abut against the connecting seat when the coupling assembly is in the connected state.

[0118] The first connecting plate 511 corresponds to the first connecting inner wall 521, the second connecting plate 512 corresponds to the second connecting inner wall 522, the third connecting plate 513 corresponds to the third connecting inner wall 523, the fourth connecting plate 514 corresponds to the fourth connecting inner wall 524, and the fifth connecting plate 515 corresponds to the fifth connecting inner wall 525. Because the base 510 is directly formed on the first support plate of the cart, that is, the first connecting plate 511, the second connecting plate 512, the third connecting plate 513, the fourth connecting plate 514, and the fifth connecting plate 515 are directly formed by the first support plate.

[0119] The third connecting inner wall 523 and the fourth connecting inner wall 524 are connected or formed with corresponding support ends, specifically the first support end, the second support end 527, the third support end, and the fourth support end 529. The first support end and the third support end are arranged on one side of the connecting base, and the second support end 527 and the fourth support end 529 are arranged on one side of the connecting base. The above support ends all protrude outward. The two sides of the connecting base are connected to the first support end, the second support end 527, the third support end, and the fourth support end 529 respectively. For example, two groups of long strip-shaped grooves are formed on both sides of the connecting base, specifically the first groove 531, the second groove, the third groove 533, and the fourth groove. The depths of the above four grooves are all from shallow to deep. The first groove 531 and the second groove are basically corresponding and are distributed on both sides of the connecting base. Similarly, the third groove 533 and the fourth groove are basically corresponding and are distributed on both sides of the connecting base. In other words, the first groove 531 and the third groove 533 are arranged on the same side of the connecting base, and the second groove and the fourth groove are arranged on the same side of the connecting base. The first groove 531 and the third groove 533 extend in substantially opposite directions from shallow to deep, with the bottoms of the first, second, third, and fourth grooves forming the deepest recesses. The connector can be inserted into the base 510 through the first and second grooves, guided by the first and second support ends 527. In this case, the connector is in a position capable of connecting to the toolbox, with the connector abutting against the abutting surface 517. The connector can also be inserted into the accommodating cavity 516 through the third and fourth grooves, guided by the third and fourth support ends 529. In this case, the coupling assembly is concealed.

[0120] The initial state of the coupling assembly is defined herein as the hidden state, in which the connector is within the accommodating cavity 516, with the bottom of the third groove 533 abutting the third support end, and the bottom of the fourth groove abutting the fourth support end 529. When a user wishes to switch the coupling assembly to the connected state, the user lifts the coupling assembly upward, separating the bottom of the third groove 533 from the third support end, and the bottom of the fourth groove from the fourth support end 529, until the third and fourth support ends 529 slide out of the third and fourth grooves, respectively. The user then flips the coupling assembly upward, and inserts the first and second grooves into the base 510 under the guidance of the first and second support ends 527, until the first and second support ends 527 abut the bottom walls of the first and second grooves 531 and 527, respectively. At this point, the connector seat abuts the abutting surface 517, and the coupling assembly switches from the hidden state to the connected state.

[0121] When the connector assembly is in the hidden state, the connector base has at least one upward-facing surface, defined as an end surface 535. In the vertical direction, end surface 535 is the farthest from the fifth connecting plate 515. End surface 535 is lower than the surface of the first support plate, that is, lower than the storage surface of the first support plate. This ensures that when a user places items on the first support plate, the connector assembly will not prevent the user from placing items on the first connecting plate 511. Furthermore, items placed on the first connecting plate 511 will not be damaged by the connector assembly during transportation or handling. When the user needs to use the connector, they simply switch the connector assembly to the connected state.

[0122] In the present application, when the connecting assembly is in a hidden state, at least two steps are required to connect it to the part to be installed.

[0123] In this application, some of the reference numerals in the second to fifth embodiments are the same as those in the first embodiment.

[0124] The above shows and describes the basic principles, main features and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of this application.

Claims

1. A trolley, comprising a connection device formed on or connected to the trolley, the connection device being configured to mount a component to be mounted on the trolley, The connecting device comprises: a base formed on or connected to the trolley, the base being formed with a receiving cavity; A connecting assembly connected to the base, wherein the connecting assembly is configured to connect the part to be installed; The connection assembly comprises: A connecting piece, cooperating with the piece to be installed to connect the piece to be installed; The connecting assembly has at least a connected state and a hidden state relative to the base. When the connecting assembly is in the connected state, the connecting member is in a mating position capable of mating with the member to be installed. When the connecting assembly is in the hidden state, the connecting member is in a hidden position detached from the mating position.

2. The trolley according to claim 1, wherein: The connecting assembly is switched from the connected state to the hidden state relative to the base by one or a combination of rotation, movement, and disassembly.

3. The trolley according to claim 1, wherein: When the connecting assembly is in the hidden state, the connecting assembly is lower than the upper surface of the base, or lower than the storage surface of the trolley.

4. The trolley according to claim 1, wherein: When the connecting assembly is in the connected state, the connecting assembly can be driven to move to the hidden state.

5. The trolley according to claim 4, wherein: The coupling assembly further comprises a driving member, which can be inserted into the base so as to switch the coupling assembly from the hidden state to the connected state.

6. The trolley according to claim 4, wherein: The connecting assembly also includes a connecting seat for mounting the connecting member, the connecting seat being pivotally connected to the base, the connecting seat having an end surface, and when the connecting assembly is in the connected state, the end surface is at least partially in contact with the base, and when the connecting assembly is in the hidden state, the end surface is lower than the upper surface of the base, or lower than the storage surface of the trolley.

7. The trolley according to claim 4, wherein: The connecting seat of the connecting piece is connected to the base. When the connecting assembly is switched from the connected state to the hidden state, the connecting assembly needs to be folded upward and then slid downward into the accommodating cavity so that the connecting assembly is lower than the upper surface of the base or lower than the storage surface of the trolley.

8. The trolley according to claim 5, wherein: The driving member further includes a driving surface. During the process of inserting the driving member into the base, the driving surface contacts the connecting assembly and drives the connecting assembly to slide upward until the connecting assembly switches from the hidden state to the connected state.

9. The trolley according to claim 5, wherein: The driving member further comprises a driving surface. During the process of inserting the driving member into the base, the driving surface contacts the connecting assembly and drives the connecting assembly to fold upward until the connecting assembly switches from the hidden state to the connected state.

10. The trolley according to claim 6, wherein: The connecting device also includes a first clamping portion and a second clamping portion that cooperate with the connecting piece. The first clamping portion and the second clamping portion are relatively arranged on both sides of the connecting seat. When the connecting assembly is in a connected state, the connecting seat is clamped with the first clamping portion and the second clamping portion, and the connecting piece and the base remain relatively fixed.

11. The trolley according to claim 6, wherein: The connecting member includes a buckle configured to cooperate with the member to be installed, and the buckle is higher than the upper surface of the base in the up-down direction.

12. The trolley according to claim 6, wherein: The connecting assembly also includes a connecting seat for mounting the connecting member, the connecting seat being pivotally connected to the base, the connecting seat having an end face, when the connecting assembly is in the connected state, the end face is at least partially in contact with the base, when the connecting assembly is in the hidden state, the end face is substantially flush with the upper surface of the base, or the end face is substantially flush with the storage surface of the trolley.

13. The trolley according to claim 1, wherein: When the connecting assembly is in the hidden state, the connecting assembly is substantially flush with the upper surface of the base, or the connecting assembly is substantially flush with the storage surface of the trolley.

14. The trolley according to claim 1, wherein: When the connecting assembly is in a hidden state, the parts to be installed can be directly stacked on the connecting parts.

15. The cart according to claim 1, wherein: When the connecting assembly is in a hidden state, the connecting member is configured to require at least two steps to connect with the member to be installed.

16. A tool box, comprising a connection device formed on or connected to the tool box, the connection device being configured to attach a component to be attached to the tool box, The connecting device comprises: A base, formed on or connected to the tool box, the base forming a receiving cavity; A connecting assembly connected to the base, wherein the connecting assembly is configured to connect the part to be installed; The connection assembly comprises: A connecting piece, cooperating with the piece to be installed to connect the piece to be installed; The connecting assembly has at least a connected state and a hidden state relative to the base. When the connecting assembly is in the connected state, the connecting member is in a mating position capable of mating with the member to be installed. When the connecting assembly is in the hidden state, the connecting member is in a hidden position detached from the mating position.

17. A tool comprising a connection device formed on or connected to the tool, the connection device being configured to attach a component to be attached to the tool box, The connecting device comprises: A base formed on or connected to the tool, the base forming a receiving cavity; A connecting assembly connected to the base, wherein the connecting assembly is configured to connect the part to be installed; The connection assembly comprises: A connecting piece, cooperating with the piece to be installed to connect the piece to be installed; The connecting assembly has at least a connected state and a hidden state relative to the base. When the connecting assembly is in the connected state, the connecting member is in a mating position capable of mating with the member to be installed. When the connecting assembly is in the hidden state, the connecting member is in a hidden position detached from the mating position.

18. A connection device that can be mounted to a tool or a tool box, the connection device being configured to mount a component to be mounted to the tool or the tool box, The connecting device comprises: a base formed or connected to the tool or tool box, the base forming a receiving cavity; A connecting assembly connected to the base, wherein the connecting assembly is configured to connect the part to be installed; The connection assembly comprises: A connecting piece, cooperating with the piece to be installed to connect the piece to be installed; The connecting assembly has at least a connected state and a hidden state relative to the base. When the connecting assembly is in the connected state, the connecting member is in a mating position capable of mating with the member to be installed. When the connecting assembly is in the hidden state, the connecting member is in a hidden position detached from the mating position.

19. The connection device according to claim 18, wherein: The connecting assembly is switched from the connected state to the hidden state relative to the base by one or a combination of rotation, movement, and disassembly.

20. The connection device according to claim 18, wherein: When the connecting assembly is in the hidden state, the connecting assembly is lower than the upper surface of the base, or lower than the storage surface of the tool or tool box.

21. The connection device according to claim 18, wherein: When the connecting assembly is in the connected state, the connecting assembly can be driven to move to the hidden state.

22. The connection device according to claim 21, wherein: The coupling assembly further comprises a driving member, which can be inserted into the base so as to switch the coupling assembly from the hidden state to the connected state.

23. A connection device that can be mounted to a tool or a tool box, the connection device being configured to mount a component to be mounted to the tool or the tool box, The connecting device comprises: a base forming or connected to said tool or tool box; A connecting assembly connected to the base, wherein the connecting assembly is configured to connect the part to be installed; The connection assembly comprises: A connecting piece, cooperating with the piece to be installed to connect the piece to be installed; The connecting assembly has at least a hidden state relative to the base. When the connecting assembly is in the hidden state, the connecting member is lower than the upper surface of the base, or lower than the storage surface of the tool or tool box.

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