Car roof storage device with mattress

Abstract

The utility model provides a car roof storage device with a mattress. The platform assembly is provided with the containing cavity and / or the storage structure, so that the air cushion type mattress and / or the roller shutter type mattress can be placed on the platform assembly in a folded state, namely, the air cushion type mattress and / or the roller shutter type mattress are / is integrated on the platform assembly, and therefore the air cushion type mattress and / or the roller shutter type mattress can be unfolded conveniently when a vehicle is parked; therefore, the situation that the user can only directly lie on the platform assembly is avoided, and the use experience and comfort of the user are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle roof racks, in particular to a vehicle roof storage device with a mattress. Background Art

[0002] With the increasing diversification of roof rack functionality, more and more travel enthusiasts are viewing roof racks as a platform that combines cargo and travel accommodation. Some existing roof racks with travel accommodation features not only serve as a "bed" for users to lie on, but also incorporate a roof tent. This folds and secures the roof when the vehicle is in motion; when the vehicle is parked, the tent unfolds to create a private space on top for users to lie down.

[0003] However, most of the materials on the roof rack are metal materials and hard plastics, which makes the top surface of the roof rack hard and uneven, making the user uncomfortable after lying down, thereby reducing the user's lying experience. Utility Model Content

[0004] In view of the above problems, the present invention is proposed to provide a roof storage device with a mattress that overcomes the above problems or at least partially solves the above problems, which can solve the problem of users feeling uncomfortable lying directly on the roof rack and achieve the purpose of improving user experience.

[0005] Specifically, the utility model provides a roof storage device, including a platform assembly for fixedly mounting on the top of a vehicle, wherein a accommodating cavity for accommodating an air cushion mattress and an on-board air pump is defined on the platform assembly, and / or a storage structure for accommodating and / or connecting the roller curtain mattress when it is rolled up is provided on the platform assembly; wherein the accommodating cavity is opened upward and / or opened to at least one side to form a first opening, so as to facilitate taking and placing the air cushion mattress and / or the on-board air pump from the first opening.

[0006] Preferably, the platform assembly includes a base frame, a top frame connected to the top of the base frame, a storage space below the top frame is defined between the base frame and the top frame, and the accommodating cavity is located in the storage space.

[0007] Preferably, the base frame includes a first fixed frame for fixedly connecting to the top of the vehicle, the first fixed frame and the top frame define a second opening open to at least one side of the storage space, a first movable frame is arranged in the second opening, and the first movable frame is detachably connected to the first fixed frame and / or the top frame to facilitate switching the opening and closing state of the second opening by detaching and attaching the first movable frame; and

[0008] At least in the case where the accommodating cavity opened to at least one side is defined on the platform assembly, the accommodating cavity is a part of the storage space, and the first opening is also a part of the second opening.

[0009] Preferably, the top frame includes a second fixing frame fixedly connected to the bottom frame, and the second fixing frame and the bottom frame define the storage space; and

[0010] At least in the case where the upwardly opening accommodating cavity is defined on the platform assembly, the accommodating cavity is part of the storage space, and the first opening is located on the second fixing frame.

[0011] Preferably, the accommodating cavity is further configured to accommodate the roll-up mattress.

[0012] Preferably, when at least the storage structure is provided on the platform assembly, the storage structure comprises:

[0013] The first rolling curtain mechanism includes a roller that is rotatably connected to the platform assembly, the roller is wound around the roller and connected to the roll-up mattress, one end of the roll-up mattress is connected to the roller, and the other end is used to be laid flat on the platform assembly in an unfolded state.

[0014] Preferably, the storage structure further includes:

[0015] A storage container is fixedly connected to the platform assembly and is in a bag-like or box-like shape. A storage cavity is formed thereon for storing the rolled-up roll-up mattress therein, and a third opening is formed thereon for pulling the rolled-up mattress out of the storage cavity; wherein a closing structure is provided on the third opening for controlling the opening and closing state of the third opening.

[0016] Preferably, the roll-up mattress includes a cover, which is constructed to be wound around the reel and defines a closed cavity therein. The cavity is connected to an air nozzle located on the cover to facilitate the injection of gas into the cavity through the air nozzle in the unfolded state, thereby making at least a portion of the roll-up mattress an air cushion structure.

[0017] Preferably, the side curtain assembly comprises a casing fixedly connected to one side of the platform assembly, a second curtain mechanism being rotatably connected in the casing, and a curtain being wound on the second curtain mechanism for being pulled out from a side of the casing away from the platform assembly; and

[0018] When at least the storage mechanism is provided on the platform assembly, the storage structure is connected to a side of the casing close to the platform assembly, and / or the storage structure and the second rolling curtain mechanism share the casing.

[0019] Preferably, the chassis comprises a first fixing frame comprising two parallel and spaced fixing beams;

[0020] The top frame includes a second fixed frame and a second movable frame, the second fixed frame bridges the fixed purlins fixed between the two fixed beams, the fixed purlins are multiple and spaced apart in the length direction of the fixed beams; the second movable frame includes a movable purlin slidably inserted between two adjacent fixed purlins, the movable purlin also slides and overlaps the fixed beams to facilitate the movable purlin to be pulled relative to the fixed purlins; and,

[0021] The first opening is defined between the fixed purlins.

[0022] The beneficial effects of the utility model are:

[0023] On the roof storage device of the present invention, a receiving cavity and / or a storage structure are provided on the platform assembly, so that the air mattress and / or the roll-up mattress can be placed on the platform assembly in a retracted state, that is, the air mattress and / or the roll-up mattress are integrated on the platform assembly, so that the air mattress and / or the roll-up mattress can be unfolded when the vehicle is parked, thereby avoiding the situation where the user can only lie directly on the platform assembly, thereby improving the user experience and comfort.

[0024] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0026] Figure 1 1 is a schematic structural diagram of a vehicle roof storage device according to an embodiment of the present utility model;

[0027] Figure 2 yes Figure 1 Front view of the roof storage device of the mid-car;

[0028] Figure 3 yes Figure 2The schematic structure diagram of the AA section view in the middle is from the axonometric perspective.

[0029] in:

[0030] Platform assembly-100, bottom frame-110, top frame-120;

[0031] Accommodation chamber 200, first opening 210, cover plate 220, hanging basket 230;

[0032] Storage structure 300, first rolling curtain mechanism 310, storage container 320, rolling curtain mattress 330. DETAILED DESCRIPTION

[0033] In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0034] Unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," "fixed," and "coupled" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. That is, in the description of this embodiment, the first feature being "above," "above," and "above" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below," "below," or "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of the present embodiment, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0037] In an embodiment of the vehicle roof storage device of the present invention, the vehicle-mounted storage device is mainly composed of a platform assembly 100 and a mattress assembly mounted thereon. The platform assembly 100 can be an existing fixed-volume roof rack (such as a single-layer roof rack, a double-layer roof rack), or a variable-volume roof rack (such as an expandable roof rack platform, a double-layer expandable roof rack). These forms of platform assemblies 100 are all those described in other prior patents by the applicant, and are not or not solely the objects of protection of the vehicle roof storage device of the present invention. The mattress assembly includes a common inflatable mattress, and also includes a roller curtain mattress 330 (such as a mat, a roller curtain). The following will describe in detail the arrangement of the mattress assembly in the platform assembly 100 in the vehicle roof storage device of the present invention.

[0038] like Figures 1 to 3 As shown, in an embodiment of the roof storage device of the present invention, the roof storage device includes a platform assembly 100 for being fixedly mounted on the roof of a vehicle, a receiving cavity 200 for receiving an air mattress and an on-board air pump is defined on the platform assembly 100, and / or a storage structure 300 is provided on the platform assembly 100 for receiving and / or connecting the roll-up mattress 330 when the roll-up mattress is in a rolled-up state; wherein the receiving cavity 200 is opened upward and / or opened to at least one side to form a first opening 210, so as to facilitate taking and placing the air mattress and / or the on-board air pump from the first opening 210.

[0039] As described in the above technical solution, the mattress components can be distributed on the platform component 100 in at least the following ways:

[0040] a. The mattress assembly is an air-cushion mattress, and correspondingly, there is only a receiving cavity 200 on the platform assembly 100, which can accommodate the air-cushion mattress and its dedicated vehicle-mounted air pump.

[0041] An air mattress is one that provides support and comfort by filling an air cavity with air. Its design, structure, and types vary widely, allowing users to choose according to their specific needs and comfort requirements. A common air mattress consists of an exterior material (mattress fabric), an inflatable airbag structure, an inflation mechanism, and a deflation valve. The exterior of an air mattress is typically made of durable and waterproof materials such as polyester (PVC-coated), rubber, and nylon. These materials offer excellent wear resistance, tear resistance, and water resistance, effectively extending the mattress's lifespan. Some high-end air mattresses also utilize thicker, wear-resistant materials for enhanced comfort and durability. The core of an air mattress is its airbag structure, which is inflated to provide support. The airbags can be designed as continuous, compartmentalized, or independent chambers to adjust the mattress's firmness and support. The airbag structure can be optimized based on the design. Some mattresses use airbags in different areas with varying inflation levels to provide support for specific areas, such as the waist, shoulders, and hips. Common inflation mechanisms include built-in pumps and manual inflation ports. Modern air mattresses typically come with a built-in electric air pump, allowing for easy inflation and deflation. The air pump is typically controlled by a button or remote control, making it easy to adjust the firmness of the mattress. Some simpler air mattresses may use a manual air valve and require manual inflation or a hand pump, making them suitable for portable travel and camping. Air mattresses typically have a deflation valve to regulate the rate of air release, making it easier to adjust the firmness or store the mattress. The deflation valve also allows the mattress to deflate quickly, making it easier to store and organize. Common types of air mattresses include full-chamber air mattresses, zoned air mattresses, independent airbag mattresses, premium adaptive air mattresses, double air mattresses, inflatable sofa beds, and camping air mattresses.

[0042] Among them, a vehicle air pump, particularly a rechargeable one, is a portable air pump with a built-in rechargeable battery. It is easy to move and use even when the vehicle's power supply is unavailable. They are typically compact and convenient, suitable for inflating car tires, motorcycle tires, sports equipment, and other equipment in emergency situations. They consist of a battery unit (rechargeable battery), an electric motor, an air compression unit (airbag), a display and control panel, air pipes and connectors, an LED light, and a cooling system. The lithium battery in a rechargeable vehicle air pump is typically rechargeable, providing extended battery life. The battery is recharged via a standard USB port or a dedicated charger. The battery capacity typically ranges from 2000mAh to 6000mAh, sufficient to inflate a certain number of tires or items. The motor, the core driving force of the vehicle air pump, is typically a brushless motor, offering high efficiency, low noise, and a long service life. The motor power varies depending on the model of the vehicle air pump, generally ranging from 30W to 150W. An air pump typically uses a piston or plunger air compressor to compress air and then deliver it to the target (such as a tire or sports equipment). The core component of this unit is the compressor, which draws in and pressurizes the air. Most cordless car air pumps feature an LED digital display showing the current air pressure, and often also have several buttons or knobs to control the pump's on / off function and adjust the pressure. Many models offer a one-touch setting function for setting the target pressure, allowing you to preset a standard tire pressure and automatically stop when inflation is complete. The pump connects to the target via a flexible hose. The length and material of the hose determine its ease of use and durability. A variety of connectors are typically available (such as for car tires, motorcycle tires, basketballs, and air cushions) to accommodate various inflation requirements. Many cordless car air pumps also include an LED light, typically a flashing warning light or a steady light, which can be used for nighttime inflation or to illuminate in emergencies. Some high-powered air pumps also have a built-in cooling system to prevent overheating during extended use. This is typically achieved through heat dissipation vents or a built-in fan. Common brands of existing car air pumps include Mijia, Orico, Lego, Vinda, Belitung and Sift.

[0043] b. The mattress assembly is a roll-up mattress 330, and correspondingly, only the storage structure 300 exists on the platform assembly 100. In the embodiment of the vehicle roof storage device of the present invention, the roll-up mattress 330 includes not only the common roll-up mattress 330, but also a mat and a bed sheet. Among them, the common roll-up mattress 330 includes filling, fabric, roll and handles. The filling of the mattress is usually made of high-density foam, spring, memory foam and other materials to provide support and comfort; the surface of the mattress is usually made of breathable, moisture-absorbing and perspiration-wicking fabrics such as cotton, linen, polyester, etc. to ensure comfort and keep dry; the roll for support and shaping is usually made of metal or plastic; the handle for users to roll up and move the mattress is usually located on the side of the mattress. The types of the roll-up mattress 330 include memory foam roll-up mattress, spring roll-up mattress, foam roll-up mattress, coconut palm roll-up mattress, multi-functional roll-up mattress, and children's roll-up mattress.

[0044] c. The mattress assembly may also include both an inflatable mattress and a roll-up mattress 330 ; correspondingly, a receiving cavity 200 and a storage structure 300 are provided on the platform assembly 100 .

[0045] Based on this, on the roof storage device of the present invention, by arranging a accommodating cavity 200 and / or a storage structure 300 on the platform assembly 100, the air mattress and / or the roller curtain mattress 330 can be placed on the platform assembly 100 in a retracted state, that is, the air mattress and / or the roller curtain mattress 330 are integrated on the platform assembly 100, so that the air mattress and / or the roller curtain mattress 330 can be unfolded when the vehicle is parked, thereby avoiding the situation where the user can only lie directly on the platform assembly 100, thereby improving the user experience and comfort.

[0046] In some embodiments of the roof storage device of the present invention, the platform assembly 100 includes a bottom frame 110, a top frame 120 connected to the top of the bottom frame 110, a storage space below the top frame 120 is defined between the bottom frame 110 and the top frame 120, and the accommodating cavity 200 is located in the storage space. The platform assembly 100 obtains a storage space below the top frame 120 by raising its top frame 120, and at the same time, the accommodating cavity 200 of the roof storage device of the present invention is placed in the storage space. In recent years, with the increasing common sense in the field of the technology of the roof rack 120, the platform assembly 100 is used to obtain one or more relatively flat storage spaces on the roof of the vehicle, and the storage space is used to store automotive appliances such as shelters and inflatable mattresses. As a further application of the storage space, some embodiments of the roof storage device of the present invention can further include a storage cavity 200 within the storage space. This not only diversifies the functionality of the existing storage space but also avoids the need to modify the structure of the platform assembly 100 to accommodate an inflatable mattress. Therefore, this platform assembly 100 is economical and affordable.

[0047] In some further preferred embodiments of the roof storage device of the present invention, the base frame 110 includes a first fixed frame for fixedly connecting to the top of the vehicle, the first fixed frame and the top frame 120 define a second opening that is open on at least one side of the storage space, and a first movable frame is arranged in the second opening, and the first movable frame is detachably connected to the first fixed frame and / or the top frame 120 to facilitate switching the opening and closing state of the second opening by disassembling and assembling the first movable frame; and, at least in the case where a accommodating cavity 200 that is open to at least one side is defined on the platform assembly 100, the accommodating cavity 200 is part of the storage space, and the first opening 210 is also part of the second opening. In this embodiment, the roof storage device of the present invention splits the base frame 110 of the platform assembly 100 into two parts, namely, one part is a first fixed frame, and the other part is a first movable frame, and the two are detachably connected together, especially the first movable frame is generally detachably connected to the rear side of the first fixed frame (that is, the second opening opens to the rear), so that the user can conveniently disassemble and assemble the first movable frame from the rear side of the vehicle, that is, control the opening and closing of the first opening 210 (including the second opening) at the rear side of the vehicle, so as to further facilitate the removal and placement of the inflatable mattress from the accommodating cavity 200.

[0048] In some further preferred embodiments of the vehicle roof storage device of the present invention, the top frame 120 includes a second fixing frame fixedly connected to the bottom frame 110, and the second fixing frame and the bottom frame 110 define a storage space. Furthermore, at least in the case where an upwardly opening accommodating cavity 200 is defined on the platform assembly 100, the accommodating cavity 200 is part of the storage space, and the first opening 210 is located on the second fixing frame. By reserving the first opening 210 on the second fixing frame of the overhead top frame 120, it is convenient for the user to directly remove and place the inflatable mattress from above the platform assembly 100. This allows the user to remove and place the mattress all at once while climbing onto the vehicle roof, making it easier for the user to prepare the bed on the vehicle roof and reducing the time required to prepare for an outdoor sleeper.

[0049] As a further preferred embodiment of the above embodiment, Figure 1-3 As shown, a cover plate 220 hinged to the second fixing frame is provided in the first opening 210, and a hanging basket 230 fixedly connected to the second fixing frame and the base frame 110 and opening upward is further provided in the storage space, defining the accommodating chamber 200 within the hanging basket 230. The upward opening of the accommodating chamber 200 can be covered by the cover plate 220, thereby achieving control over the closing and opening of the accommodating chamber 200. At the same time, a lean and modular design can also be implemented on the hanging basket 230, so that a accommodating slot that matches the inflatable mattress and the vehicle-mounted air pump is obtained on the hanging basket 230, further facilitating the removal and placement of the inflatable mattress and the vehicle-mounted air pump.

[0050] In some further preferred embodiments of the roof storage device of the present invention, the base frame 110 includes a first fixed frame, the first fixed frame including two parallel and spaced fixed beams; the top frame 120 includes a second fixed frame and a second movable frame, the second fixed frame bridging fixed purlins fixed between the two fixed beams, the fixed purlins being multiple and spaced apart along the length of the fixed beams; the second movable frame including movable purlins that are slidably inserted between two adjacent fixed purlins, the movable purlins also slidingly overlapping the fixed beams to facilitate the movable purlins to be pulled relative to the fixed purlins; and first openings 210 are defined between each of the fixed purlins. Forming the first openings 210 only on the fixed purlins allows the second movable frame to open and close the first openings 210 by random movement, eliminating the need for a separate sealing structure on the first fixed frame, thereby further simplifying the structure of the platform assembly 100 and reducing the material used in the roof storage device.

[0051] In some preferred embodiments of the vehicle roof storage system of the present invention, the accommodating cavity 200 is further configured to accommodate a roll-up mattress 330. Thus, even if the platform assembly 100 only has the accommodating cavity 200, the roll-up mattress 330 can be placed therein, thereby centrally accommodating the inflatable mattress and the roll-up mattress 330, further enhancing the integration level of the vehicle roof storage system of the present invention.

[0052] In some preferred embodiments of the vehicle roof storage system of the present invention, when at least a storage structure 300 is provided on the platform assembly 100, the storage structure 300 includes a first rolling mechanism 310. The first rolling mechanism 310 includes a reel rotatably connected to the platform assembly 100, on which a roll-up mattress 330 is wound and connected. One end of the roll-up mattress 330 is connected to the reel, and the other end is used to lay flat on the platform assembly 100 when unfolded. Using the rolling mechanism to store the roll-up mattress 330 not only allows the roll-up mattress 330 to be controlled in place by utilizing the roll-up mechanism's ability to be pulled and stopped, but also facilitates the roll-up mattress 330's self-retraction function during retrieval.

[0053] In some preferred embodiments of the roof storage system of the present invention, the storage structure 300 further includes a storage container 320. The storage container 320 is fixedly connected to the platform assembly 100 and is sac-shaped or box-shaped. It defines a storage cavity for receiving the rolled-up roll-up mattress 330 and a third opening for withdrawing the unfolded roll-up mattress 330 from the storage cavity. A closing structure is provided on the third opening to control the opening and closing of the third opening. The storage container 320 allows the storage structure 300 and the roll-up mattress 330 therein to be placed above the platform assembly 100. Furthermore, its overall exterior design minimizes the possibility of the roll-up mattress 330 being dispersed by wind while the vehicle is in motion, thereby reducing wind resistance for the entire roof storage system.

[0054] In some preferred embodiments of the roof storage system of the present invention, a roll-up mattress 330 includes a cover that is wound around a reel and defines a closed cavity. The cavity is connected to an air nozzle located on the cover. When deployed, air is injected into the cavity through the nozzle, thereby forming at least a portion of the roll-up mattress 330 into an air cushion structure. The sandwich-shaped roll-up mattress 330 allows for inflatable air in its central portion, improving the comfort of the roll-up mattress 330 during use.

[0055] In some preferred embodiments of the roof storage device of the present invention, the roof storage device further comprises a side tent assembly, which comprises a housing fixedly connected to one side of the platform assembly 100, within which a second rolling curtain mechanism is rotatably connected, and which winds up a curtain for being pulled out from the side of the housing away from the platform assembly 100. Furthermore, if at least one storage mechanism is provided on the platform assembly 100, the storage structure 300 is connected to the side of the housing near the platform assembly 100, and / or the storage structure 300 and the second rolling curtain mechanism share the same housing. As more and more platform assemblies 100 are equipped with modular side tent assemblies, a parallel rolling curtain mechanism, namely the storage structure 300 of the roof storage device of the present invention, can be added to the existing side tent assembly. This not only integrates the storage structure 300 with the side tent assembly, thus diversifying the functions of the side tent assembly, but also reduces the manufacturing cost of the entire roof storage device due to the similar functions of the side tent assembly and the storage structure 300.

[0056] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention can be directly determined or deduced from the contents disclosed herein without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A rooftop storage device, comprising a platform assembly for fixedly mounting on a vehicle roof, wherein the platform assembly defines a receiving cavity for accommodating an air mattress and an onboard air pump, and / or a storage structure for accommodating and / or connecting a roll-up mattress in a rolled-up state is provided on the platform assembly; wherein: The accommodating cavity is opened upward and / or opened to at least one side to form a first opening, so as to facilitate taking and placing the air mattress and / or the vehicle-mounted air pump through the first opening.

2. The roof storage device according to claim 1, wherein: The platform assembly includes a bottom frame and a top frame connected to the top of the bottom frame. A storage space located below the top frame is defined between the bottom frame and the top frame, and the accommodating cavity is located in the storage space.

3. The roof storage device according to claim 2, wherein: The bottom frame includes a first fixed frame for fixedly connecting to the top of the vehicle, the first fixed frame and the top frame defining a second opening open to at least one side of the storage space, a first movable frame being disposed in the second opening, the first movable frame being detachably connected to the first fixed frame and / or the top frame so as to facilitate switching the opening and closing states of the second opening by detaching and attaching the first movable frame; as well as, At least in the case where the accommodating cavity opened to at least one side is defined on the platform assembly, the accommodating cavity is a part of the storage space, and the first opening is also a part of the second opening.

4. The roof storage device according to claim 2, wherein: The top frame includes a second fixing frame fixedly connected to the bottom frame, and the second fixing frame and the bottom frame define the storage space; as well as, At least in the case where the upwardly opening accommodating cavity is defined on the platform assembly, the accommodating cavity is part of the storage space, and the first opening is located on the second fixing frame.

5. The roof storage device according to claim 1, wherein: The receiving cavity is further configured to receive the roll-up mattress.

6. The roof storage device according to claim 1, wherein: In the case where at least the storage structure is provided on the platform assembly, the storage structure includes: The first rolling curtain mechanism includes a roller that is rotatably connected to the platform assembly, the roller is wound around the roller and connected to the roll-up mattress, one end of the roll-up mattress is connected to the roller, and the other end is used to be laid flat on the platform assembly in an unfolded state.

7. The roof storage device according to claim 6, wherein: The storage structure further includes: A storage container is fixedly connected to the platform assembly and is in a bag-like or box-like shape. A storage cavity is formed thereon for storing the rolled-up roll-up mattress therein, and a third opening is formed thereon for pulling the rolled-up mattress out of the storage cavity; wherein a closing structure is provided on the third opening for controlling the opening and closing state of the third opening.

8. The roof storage device according to claim 6, wherein: The roll-up mattress includes a cover, which is constructed to be wound around the reel and defines a closed cavity therein. The cavity is connected to an air nozzle located on the cover to facilitate the injection of gas into the cavity through the air nozzle in the unfolded state, thereby making at least a portion of the roll-up mattress an air cushion structure.

9. The rooftop storage device according to claim 1, further comprising: A side curtain assembly, the side curtain assembly comprising a casing fixedly connected to one side of the platform assembly, a second curtain mechanism rotatably connected within the casing, the second curtain mechanism being wound around a curtain for being pulled out from a side of the casing away from the platform assembly; and When at least the storage mechanism is provided on the platform assembly, the storage structure is connected to a side of the casing close to the platform assembly, and / or the storage structure and the second rolling curtain mechanism share the casing.

10. The roof storage device according to claim 4, wherein: The chassis includes a first fixed frame including two parallel and spaced fixed beams; The top frame includes a second fixed frame and a second movable frame, the second fixed frame bridges the fixed purlins fixed between the two fixed beams, the fixed purlins are multiple and spaced apart in the length direction of the fixed beams; the second movable frame includes a movable purlin slidably inserted between two adjacent fixed purlins, the movable purlin also slides and overlaps the fixed beams to facilitate the movable purlin to be pulled relative to the fixed purlins; and, The first opening is defined between the fixed purlins.

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