Floor unfolding and retracting mechanism that can accommodate the vehicle room

Abstract

The present invention discloses a floor deployment and retraction mechanism for a retractable vehicle housing, comprising a first connecting device and a second connecting device. The first connecting portion and the second connecting portion of the first connecting device are each connected to a set of floor panel assemblies, the second connecting portion is connected to the first connecting portion and can slide longitudinally relative to the first connecting portion, and the third connecting portion and the fourth connecting portion of the second connecting device are each connected to different floor panels in the same set of floor panel assemblies, the third connecting portion is connected to the fourth connecting portion and can slide transversely relative to the fourth connecting portion. Using the floor deployment and retraction mechanism provided by this solution, the floor is deployed and retracted efficiently and labor-savingly, and can meet the floor space and height requirements when the vehicle housing is stored on the vehicle roof.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted tents, and in particular to a stowable vehicle-mounted room. Background Art

[0002] At present, the internal space of car tents on the market is relatively small, and people cannot walk upright in the tent, resulting in a poor user experience. Increasing the internal space of the tent can improve the user experience, but tents with large internal space are difficult to fold and unfold.

[0003] In view of this, how to make a tent with a large internal space easier to fold and unfold is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a floor deployment and retraction mechanism capable of accommodating a vehicle room, the floor deployment and retraction mechanism comprising a first connecting device, the first connecting device comprising at least a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion each being connected to a group of floor panel assemblies, the second connecting portion being connected to the first connecting portion and being able to slide longitudinally relative to the first connecting portion to drive one group of floor panel assemblies to slide above another group of floor panel assemblies or to slide to the side of another group of floor panel assemblies.

[0005] In one embodiment, each group of floor panel assemblies includes multiple layers of floor panels; the floor panel deployment and retraction mechanism may further include a second connecting device, the second connecting device including at least a third connecting portion and a fourth connecting portion, the third connecting portion and the fourth connecting portion respectively connected to floor panels on different layers in the same group of floor panel assemblies, the third connecting portion connected to the fourth connecting portion and capable of sliding in a transverse direction relative to the fourth connecting portion to drive one layer of floor panels to slide above another layer of floor panels or to slide to the side of another layer of floor panels, the transverse direction being perpendicular to the longitudinal direction.

[0006] In one embodiment, the first connecting part and the second connecting part both include sliding members extending along the longitudinal direction, and the sliding member of the first connecting part is directly slidingly guided and matched with the sliding member of the second connecting part or indirectly slidingly guided and matched through a transition member; the third connecting part and the fourth connecting part both include sliding members extending along the transverse direction, and the sliding member of the third connecting part is directly slidingly guided and matched with the sliding member of the fourth connecting part or indirectly slidingly guided and matched through a transition member.

[0007] In one embodiment, the first connecting portion and the second connecting portion include connecting shafts extending in the transverse direction, and the connecting shafts are slidably guided by sliding shoes connected to the floor panel assemblies, so that the corresponding floor panel assemblies can slide transversely along the connecting shafts.

[0008] In one embodiment, the first connection part and / or the second connection part includes a lifting member, and the third connection part includes a lifting member, which is connected to the sliding member of the corresponding connection part. The lifting member is used to adjust the height of the floor panels to make the floor flat in the unfolded state.

[0009] In one embodiment, the lifting member is a swing arm, and the swing arm can swing relative to the sliding member of the corresponding connecting part.

[0010] In one embodiment, the first connecting device also includes a plurality of sleeves extending along the transverse direction, and the plurality of sleeves are arranged in sequence and spaced apart along the longitudinal direction, and are respectively used to insert a plurality of main legs of a ground support device that can accommodate a vehicle-mounted room. Each connecting portion of the first connecting device includes two mutually parallel sliding parts, and the sleeve is connected between the two mutually parallel sliding parts of the first connecting device.

[0011] In one embodiment, the multiple sleeves include a first sleeve, a second sleeve and a third sleeve, the first sleeve is connected between two parallel sliding members of the first connecting part, the second sleeve is connected between two parallel sliding members of the second connecting part, and the third sleeve and the second sleeve are respectively located on both sides of the first sleeve.

[0012] In one embodiment, the third sleeve is connected between two parallel sliding members of the first connecting part; or, the first connecting device also includes a fifth connecting part, which is connected to the first connecting part and can slide along the longitudinal direction relative to the first connecting part, and the third sleeve is connected between two parallel sliding members of the fifth connecting part.

[0013] In one embodiment, the first sleeve, the third sleeve, and the two parallel sliding members of the first connecting portion together form a frame; when the fifth connecting portion slides toward the first connecting portion to an extreme position, it blocks the swing arm of the first connecting portion, preventing the swing arm of the first connecting portion from swinging into the frame; when the fifth connecting portion slides away from the first connecting portion to a predetermined position, it releases the block on the swing arm of the first connecting portion, allowing the swing arm of the first connecting portion to swing into the frame. This arrangement allows the floor panels and the stacked items thereon to partially fall into the frame, further reducing the height of the vehicle room storage body. This allows the floor panel to occupy only a minimal amount of the height of the vehicle room storage body, thereby meeting the height requirements for rooftop storage and / or allowing for a more generous storage height for vehicle room design.

[0014] The floor deployment mechanism provided in this solution is highly efficient and labor-saving for deploying and retracting the floor, and can meet the requirements for floor space and height when the vehicle housing is stored on the vehicle roof. Furthermore, the vehicle housing using this floor deployment mechanism can be easily removed from the vehicle roof and easily replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of an embodiment of a vehicle-mounted room in an unfolded state;

[0016] Figure 2 for Figure 1 Schematic diagram of the vehicle cabin in the first storage state;

[0017] Figure 3 for Figure 1 Schematic diagram of the vehicle cabin in the second storage state;

[0018] Figure 4 for Figure 2 Schematic diagram after hiding the side wall panels, roof panels, and facility assembly;

[0019] Figure 5 for Figure 4 A schematic diagram of the first connecting device in the first storage state;

[0020] Figure 6 for Figure 4 A schematic diagram of the first connecting device in the second storage state;

[0021] Figure 7 for Figure 4 An exploded view of the first connecting device;

[0022] Figure 8 for Figure 7 Enlarged view of the part within the middle dotted circle;

[0023] Figure 9 is an exploded view of another embodiment of the first connecting device;

[0024] Figure 10 、 Figure 11 、 Figure 12 This is a schematic diagram of the floor unfolding process;

[0025] Figure 13 This is a schematic diagram of the floor in the unfolded state;

[0026] Figure 14 This is a schematic diagram of the floor support device being inserted into the sleeve of the first connecting device.

[0027] The following are the descriptions of the reference numerals:

[0028] 10 front side wall, 20 back side wall, 30 left side wall, 40 right side wall, 50 roof;

[0029] 60 floor, 60a first floor panel assembly, 60b second floor panel assembly, 61 first floor panel, 62 second floor panel, 63 third floor panel, 64 fourth floor panel, 65 sliding shoe;

[0030] 70 floor unfolding and retracting mechanism;

[0031] 71 first connecting device, 71a first connecting portion, 71b second connecting portion, 71c fifth connecting portion, 71d first sleeve, 71e second sleeve, 71f third sleeve;

[0032] 72 second connecting device, 72a third connecting portion, 72b fourth connecting portion;

[0033] 701 sliding member, 702 swing arm, 703 transition sliding member, 704 connecting shaft;

[0034] 80 lifting mechanisms, 90 facilities;

[0035] 100 support mechanism, 101 floor support device, 101a main support leg, 101c auxiliary support leg, 101d sliding rod, 102 side wall support device; DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods. The front-to-back direction and the longitudinal direction described in the text are the same direction, and the left-right direction and the lateral direction are the same direction. The front-to-back direction described in the text is the Front-Back direction in the figure, and the left-right direction and the lateral direction are the Left-Right direction in the figure. Relative to the vehicle that carries the vehicle-mounted room, the front-to-back direction can be the vehicle length direction or the vehicle width direction or any horizontal direction that is at an angle to the vehicle width direction and the vehicle length direction. "Front" and "rear" are relative and can be swapped. "Left" and "right" are relative and can be swapped.

[0037] like Figure 1 The vehicle room includes a roof 50, side walls (four side walls are provided in the illustrated scheme, namely the front side wall 10, the rear side wall 20, the left side wall 30 and the right side wall 40), a floor 60 (such as Figure 13The illustrated scheme is provided with four floor panels, namely a first floor panel 61, a second floor panel 62, a third floor panel 63, and a fourth floor panel 64; a lifting mechanism 80 for raising and lowering the roof; a floor extension and retraction mechanism 70 for extending and retracting the floor; and a support mechanism 100 for providing support and stability. The support mechanism 100 includes a floor support device 101 supported on the ground and a side wall support device 102 supported on the outside of the side wall. The floor support device 101 includes multiple main legs 101a and auxiliary legs 101c. In the illustrated scheme, six main legs 101a and two auxiliary legs 101c are provided. The six main legs 101a are vertically supported on the ground, with two main legs 101a arranged in a row in the left-right direction. The six main legs 101a are arranged in three rows in the front-back direction.

[0038] When the vehicle room is stored, the floor support device 101 and the side wall support device 102 can be stored first. After this step is completed, the side wall support device 102 and the floor support device 101 are in a horizontal state. Then the roof 50, the side walls and the facility assembly 90 are stored. After this step is completed, the roof 50, the side walls and the facility assembly 90 form four stacked bodies, and the four stacked bodies are supported on four floor panels respectively. Then, the floor unfolding and retracting mechanism 70 is used to store the four floor panels, so that the four floor panels together with the four stacked bodies supported thereon, together with the side wall support devices 102 and the floor support device 101 are stacked together to Figure 2 and Figure 3 Of course, the order of storage is not limited to this, for example, it can also be as follows Figure 14 First, the roof 50, side walls and facility components 90 are stored, and then the ground support device 101 is stored.

[0039] like Figure 4 In the stowed state, the first floor panel 61, the second floor panel 62, the third floor panel 63, and the fourth floor panel 64 are stacked in order from bottom to top. Figure 4 The four stacked bodies stacked on four layers of floor panels are hidden in the figure.

[0040] like Figure 4The floor panel deployment and retraction mechanism 70 includes a first connecting device 71 and a second connecting device 72. The first connecting device 71 connects two sets of floor panel assemblies, while the second connecting device 72 connects two layers of floor panels in the same set. Each set of floor panel assemblies may include only one floor panel or multiple floors. If a set includes only one floor panel, the second connecting device 72 may not be provided. If a set includes two floors, the second connecting device 72 may be provided to connect both. If a set includes three or more floors, more connecting devices may be provided to connect the remaining floor panels. In the illustrated embodiment, the first set of floor panel assemblies 60a includes a first floor panel 61 and a second floor panel 62, and the second set of floor panel assemblies 60b includes a third floor panel 63 and a fourth floor panel 64.

[0041] like Figure 4 、 Figure 5 、 Figure 6 as well as Figure 7 The first connecting device 71 includes at least a first connecting portion 71a and a second connecting portion 71b. The first connecting portion 71a is connected to the first group of floor panel assemblies 60a, and the second connecting portion 71b is connected to the second group of floor panel assemblies 60b. At the same time, the second connecting portion 71b is connected to the first connecting portion 71a and can slide relative to the first connecting portion 71a in the longitudinal direction. In the figure, the longitudinal direction is the front-to-back direction. Figure 10 When the second connecting portion 71b slides relative to the first connecting portion 71a, it can drive the second group of floor panel components 60b to slide relative to the first group of floor panel components 60a. Figure 10 In the embodiment, the second connecting portion 71b slides backward relative to the first connecting portion 71a, driving the second set of floor panel assemblies 60b to slide from above the first set of floor panel assemblies 60a to behind the first set of floor panel assemblies 60a.

[0042] like Figure 4 and Figure 12 The second connecting device 72 includes a third connecting portion 72a and a fourth connecting portion 72b. Two second connecting devices 72 are provided in the figure. The third connecting portion 72a and the fourth connecting portion 72b of one second connecting device 72 are connected to the second floor panel 62 and the first floor panel 61, respectively. The third connecting portion 72a and the fourth connecting portion 72b of the other second connecting device 72 are connected to the fourth floor panel 64 and the third floor panel 63, respectively. At the same time, the third connecting portion 72a and the fourth connecting portion 72b of each second connecting device 72 are connected and can slide relative to the fourth connecting portion 72b in a transverse direction. In the figure, the transverse direction refers to the left-right direction. When the third connecting portion 72a of the two second connecting devices 72 slide relative to the fourth connecting portion 72b, they can drive the second floor panel 62 and the fourth floor panel 64 to slide. Figure 12In the embodiment, the third connection portions 72a of the two second connection devices 72 slide leftward relative to the fourth connection portions 72b, driving the second floor panel 62 to slide from above the first floor panel 61 to the left side of the first floor panel 61, and driving the fourth floor panel 64 to slide from above the third floor panel 63 to the left side of the third floor panel 63.

[0043] like Figure 7 The first connecting portion 71a and the second connecting portion 71b each include two parallel sliding members 701. The two sliding members 701 of the first connecting portion 71a are respectively slidably guided with the two sliding members 701 of the second connecting portion 71b to achieve relative sliding connection between the first connecting portion 71a and the second connecting portion 71b. Figure 12 The third connecting part 72a and the fourth connecting part 72b each include two sliding members 701 parallel to each other. The two sliding members 701 of the third connecting part 72a are respectively slidably guided with the two sliding members 701 of the fourth connecting part 72b to achieve relative sliding connection between the third connecting part 72a and the fourth connecting part 72b.

[0044] The sliding member 701 of the first connecting portion 71a and the sliding member 701 of the second connecting portion 71b can be directly slidably guided and matched, or can be indirectly slidably guided and matched through the transition member 703. Figure 8 In an indirect sliding and guiding arrangement, the transition member 703 engages with the sliding member 701 of the first connecting portion 71a in a sliding and guiding manner, while the sliding member 701 of the second connecting portion 71b engages with the transition member 703 in a sliding and guiding manner. Thus, when the second connecting portion 71b slides rearward, the transition member 703 and the second connecting portion 71b initially slide rearward together. When the transition member 703 slides rearward to its limit, the second connecting portion 71b continues to slide rearward along the transition member 703. Similarly, the sliding member 701 of the third connecting portion 72a and the sliding member 701 of the fourth connecting portion 72b can also engage with each other directly or indirectly through the transition member 703. This indirect guiding arrangement satisfies the requirements for unfolding the floorboards while ensuring a shorter length when stowed.

[0045] like Figure 7 , both the first connecting portion 71a and the second connecting portion 71b include a lifting member, or only one of them includes a lifting member. Figure 12 The third connecting portion 72a also includes a lifting member. The lifting member can be a swing arm 702. The lower end of the swing arm 702 can be hinged on the sliding member 701 of the connecting portion.

[0046] During the expansion process, Figure 11 When the second floor panel assembly 60b slides to the rear side of the first floor panel assembly 60a, the two sets of floor panel assemblies can be brought to the same height by swinging the swing arm 702 of the first connecting portion 71a and the swing arm 702 of the second connecting portion 71b. Figure 13 When the second floor panel 62 slides to the left of the first floor panel 61 and the fourth floor panel 64 slides to the left of the third floor panel 63, the four floor panels can be brought to the same height by swinging the swing arm 702 of the third connecting portion 72a.

[0047] This floorboard deployment and retraction mechanism utilizes sliding connections to facilitate floorboard deployment and retraction, making deployment and retraction both labor-saving and rapid. The first and second connection devices of the floorboard deployment and retraction mechanism cooperate to enable the floorboard to be deployed and retracted in two or more directions. This ensures that the floorboard has a sufficiently large area when deployed and a sufficiently small area when retracted, meeting the required floor area for rooftop storage.

[0048] like Figure 7 The first connecting portion 71a and the second connecting portion 71b may further be provided with a connecting shaft 704, which is connected to the upper end of the swing arm 702 and extends in the transverse direction. In the illustrated embodiment, the first connecting portion 71a and the second connecting portion 71b are each provided with two connecting shafts 704. Figure 10 The first floor panel 61 may be provided with sliding shoes 65 on the front and rear sides. The sliding shoes 65 are slidably guided by the two connecting shafts 704 of the first connecting portion 71a. Thus, the first floor panel 61 can slide left and right along the connecting shafts 704 of the first connecting portion 71a. Similarly, the third floor panel 63 may be provided with sliding shoes 65 on the front and rear sides. The sliding shoes 65 are slidably guided by the two connecting shafts 704 of the second connecting portion 71b. Thus, the third floor panel 63 can slide left and right along the connecting shafts 704 of the second connecting portion 71b. In this way, Figure 12 Before the second and fourth floor panels 62, 64 slide to the left and unfold, the first and third floor panels 61, 63 can be slid to the right a certain distance. In this way, after the four floor panels are unfolded, the joints between the first and second floor panels 61, 62, and the joints between the third and fourth floor panels 63, 64 can be basically located near the left-right center line of the first connecting device 71, ensuring that the vehicle cabin does not deviate excessively to the left after the roof is unfolded.

[0049] In addition, if Figure 13 Sliding shoes 65 may also be provided on the front and rear sides of the second and fourth floor panels 62, 64. When the swing arm 702 of the third connecting portion 72a is swung so that the second and fourth floor panels 62, 64 are at the same height as the first and third floor panels 61, 63, the sliding shoes 65 on the front and rear sides of the second and fourth floor panels 62, 64 are respectively clamped onto the connecting shaft 704, thereby obtaining support and being able to slide along the connecting shaft 704.

[0050] Allowing the floor panels to slide along the connecting shafts 704 allows the floor panels to be closer to the outside of the vehicle, allowing the user to easily remove or install the floor panels and the stacked objects on them from or onto the vehicle roof while standing on the side of the vehicle. Furthermore, the floor panels can be removed or installed in batches, resulting in a lighter load for each removal or installation.

[0051] For example, when removing it from the roof, you can follow the steps below:

[0052] First, slide the second connecting portion 71b and the second set of floor panel assemblies 60b thereon toward the rear of the first connecting portion 71a. Then, use the swing arm 702 to lower the second set of floor panel assemblies 60b to the same height as the first set of floor panel assemblies 60a on the first connecting portion 71a.

[0053] Then, slide the second floor panel 62 and the fourth floor panel 64 along the corresponding connecting shafts to one side of the vehicle;

[0054] Then, remove the fourth floor panel 64, the third connecting portion 72a connected to the fourth floor panel 64, and the stacked body supported on the fourth floor panel 64 from the vehicle side;

[0055] Then, remove the second floor panel 62, the third connecting portion 72a connected to the second floor panel 62, and the stacked body supported on the second floor panel 62 from one side of the vehicle;

[0056] Then, slide the third floor panel 63 and the first floor panel 61 toward one side of the vehicle along the corresponding connecting shafts;

[0057] Then, remove the third floor panel 63, the fourth sliding portion 72b connected to the third floor panel 63, the second sliding portion 71b, and the stacked body supported on the third floor panel 63 from the vehicle side;

[0058] Then, remove the first floor panel 61, the fourth connecting portion 72b connected to the first floor panel 61, the first connecting portion 71a, and the stacked body supported on the first floor panel 61 from the vehicle side;

[0059] After removal, the first connecting portion 71a and the second connecting portion 71b are slid together, and the third connecting portion 72a and the fourth connecting portion 72b are slid together. The blocks can also be pulled away for storage by the movable pulley (not shown) on the floor panel.

[0060] like Figure 7 The first connecting device 71 may also be provided with a plurality of sleeves extending in the transverse direction, and the sleeves are used to insert the main legs 101a of the ground support device 101. In the illustrated embodiment, three sleeves are provided, namely the first sleeve 71d, the second sleeve 71e and the third sleeve 71f. Figure 14The top of the main legs 101a is connected to a slide bar 101d. When the vehicle cabin is deployed, the slide bars 101d at the top of the three rows of main legs 101a are respectively inserted into three sleeves. The three rows of main legs 101a are spaced a distance apart in the front-to-back direction to ensure support stability. The lower end of the swing arm 702 can also be hinged to the sleeve.

[0061] like Figure 7 The first sleeve 71d is connected between the two sliding members 701 of the first connecting portion 71a, the second sleeve 71e is located at the rear side of the first sleeve 71d, the second sleeve 71e is connected between the two sliding members 701 of the second connecting portion 71b, and the third sleeve 71f is located at the front side of the first sleeve 71d.

[0062] Specifically, the third sleeve 71f has two connection modes: Figure 9 In the embodiment, the third sleeve 71f is connected between the two sliding members 701 of the first connecting portion 71a. Figure 7 In the figure, the first connecting device 71 is provided with a fifth connecting part 71c, and the fifth connecting part 71c includes two sliding members 701 parallel to each other. The two sliding members 701 of the fifth connecting part 71c are respectively matched with the two sliding members 701 of the first connecting part 71a for sliding guidance, and can slide back and forth relative to the first connecting part 71a. The third sleeve 71f is connected between the two sliding members 701 of the fifth connecting part 71c.

[0063] The third sleeve 71f is connected between the two sliding members 701 of the fifth connecting portion 71c. This allows the position of the third sleeve 71f, the sliding rod 101d inserted into the third sleeve 71f, and the main leg 101a connected to the sliding rod 101d to be changed by sliding the fifth connecting portion 71c. Furthermore, the third sleeve 71f can be used to limit the swing angle of the swing arm 702 of the first connecting portion 71a, allowing the vehicle compartment to adopt two storage positions.

[0064] Specifically, if Figure 2 and Figure 5 When the fifth connecting portion 71c slides backward relative to the first connecting portion 71a to the limit position, the third sleeve 71f stops the swing arm 702 of the first connecting portion 71a, or through similar means, the swing arm 702 of the first connecting portion 71a cannot continue to swing downward after swinging to the position shown in the figure. Therefore, the swing arm 702 of the first connecting portion 71a and the floor panel supported thereon can only be stored to the limit position. Figure 2 The auxiliary leg 101c can be stored in the frame formed by the third sleeve 71f, the two sliding members 701 of the first connecting portion 71a, and the first sleeve 71d.

[0065] like Figure 3 and Figure 6 After the fifth connecting portion 71c slides forward relative to the first connecting portion 71a for a certain distance, the third sleeve 71f no longer blocks the swing arm 702 of the first connecting portion 71a. Sufficient space remains between the first sleeve 71 and the third sleeve 71f, allowing the swing arm 702 of the first connecting portion 71a to swing into the frame formed by the third sleeve 71f, the two sliding members 701 of the first connecting portion 71a, and the first sleeve 71d. Accordingly, the floor panel supported on the first connecting portion 71a can be lowered further than in the first stowed state. This arrangement allows the first connecting portion 71a, the second connecting portion 72b, and the fifth connecting portion 71c to occupy only a minimal amount of the height of the storage body in the second stowed state, thereby meeting the height requirements for rooftop storage and / or allowing for a more generous storage height when designing a vehicle compartment.

[0066] like Figure 2 and Figure 3 Comparatively speaking, the length L1 of the storage body in the first storage state is shorter than the length L2 of the storage body in the second storage state, so the storage body occupies a smaller planar surface area in the first storage state. The height H1 of the storage body in the first storage state is higher than the height H2 of the storage body in the second storage state, making the second storage state more suitable for rooftop storage. This arrangement allows users to freely choose the storage state based on their needs and vehicle type. For example, the first storage state is more advantageous when installing the device in a car or pickup truck.

[0067] The above is a detailed introduction to the floor deployment mechanism for a retractable vehicle compartment provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A floor unfolding and retracting mechanism for a vehicle room, used for unfolding and retracting the floor of a vehicle room, characterized in that: The floor unfolding and retracting mechanism (70) includes a first connecting device (71), the first connecting device (71) includes at least a first connecting portion (71a) and a second connecting portion (71b), the first connecting portion (71a) and the second connecting portion (71b) are respectively connected to a group of floor panel components, the second connecting portion (71b) is connected to the first connecting portion (71a) and can slide longitudinally relative to the first connecting portion (71a) to drive one group of floor panel components to slide to the top of another group of floor panel components or to slide to the side of another group of floor panel components; The first connecting device (71) further comprises a plurality of sleeves extending in the transverse direction, the plurality of sleeves being arranged in sequence and spaced apart in the longitudinal direction and respectively used for inserting a plurality of main legs (101a) of a floor-standing support device (101) capable of accommodating a vehicle-mounted room, each connecting portion of the first connecting device (71) comprising two mutually parallel sliding members (701), the sleeve being connected between the two mutually parallel sliding members (701) of the first connecting device (71).

2. The floor unfolding and retracting mechanism for a retractable vehicle room according to claim 1, characterized in that: Each group of floor panel assemblies includes multiple layers of floor panels; the floor expansion and contraction mechanism (70) further includes a second connecting device (72), the second connecting device (72) includes at least a third connecting portion (72a) and a fourth connecting portion (72b), the third connecting portion (72a) and the fourth connecting portion (72b) are respectively connected to floor panels on different layers in the same group of floor panel assemblies, the third connecting portion (72a) is connected to the fourth connecting portion (72b) and can slide horizontally relative to the fourth connecting portion (72b) to drive one layer of floor panels to slide to the top of another layer of floor panels or to slide to the side of another layer of floor panels, the horizontal direction being perpendicular to the longitudinal direction.

3. The floor unfolding and retracting mechanism for a retractable vehicle room according to claim 2, characterized in that: The first connecting part (71a) and the second connecting part (71b) both include a sliding member (701) extending along the longitudinal direction, and the sliding member (701) of the first connecting part (71a) and the sliding member (701) of the second connecting part (71b) are directly slidingly guided to cooperate with each other or indirectly slidingly guided to cooperate with each other through a transition member (703); the third connecting part (72a) and the fourth connecting part (72b) both include a sliding member (701) extending along the transverse direction, and the sliding member (701) of the third connecting part (72a) and the sliding member (701) of the fourth connecting part (72b) are directly slidingly guided to cooperate with each other or indirectly slidingly guided to cooperate with each other through a transition member (703).

4. The floor unfolding and retracting mechanism for a retractable vehicle room according to claim 3, characterized in that: The first connecting portion (71a) and the second connecting portion (71b) include a connecting shaft (704) extending in the transverse direction, and the connecting shaft (704) and a sliding shoe (65) connected to the floor panel assembly are slidably guided to enable the corresponding floor panel assembly to slide transversely along the connecting shaft (704).

5. The floor unfolding and retracting mechanism of a retractable vehicle room according to any one of claims 3 or 4, characterized in that: The first connecting portion (71a) and / or the second connecting portion (71b) include a lifting member, and the third connecting portion (72a) includes a lifting member, the lifting member being connected to the sliding member (701) of the corresponding connecting portion, and the lifting member being used to adjust the height of the floor panels so that the floor is flat in the unfolded state.

6. The floor unfolding and retracting mechanism for a retractable vehicle room according to claim 5, characterized in that: The lifting member adopts a swing arm (702), and the swing arm (702) can swing relative to the sliding member (701) of the corresponding connecting part.

7. The floor unfolding and retracting mechanism for a retractable vehicle room according to claim 1, characterized in that: The multiple sleeves include a first sleeve (71d), a second sleeve (71e) and a third sleeve (71f); the first sleeve (71d) is connected between two mutually parallel sliding members (701) of the first connecting portion (71a); the second sleeve (71e) is connected between two mutually parallel sliding members (701) of the second connecting portion (71b); and the third sleeve (71f) and the second sleeve (71e) are respectively located on both sides of the first sleeve (71d).

8. The floor unfolding and retracting mechanism for a retractable vehicle room according to claim 7, characterized in that: The third sleeve (71f) is connected between the two mutually parallel sliding members (701) of the first connecting part (71a); or, the first connecting device (71) further includes a fifth connecting part (71c), the fifth connecting part (71c) is connected to the first connecting part (71a) and can slide along the longitudinal direction relative to the first connecting part (71a), and the third sleeve (71f) is connected between the two mutually parallel sliding members (701) of the fifth connecting part (71c).

9. The floor unfolding and retracting mechanism for a retractable vehicle room according to claim 8, characterized in that: The first sleeve (71d), the third sleeve (71f) and the two mutually parallel sliding members (701) of the first connecting part (71a) are enclosed together to form a frame; when the fifth connecting part (71c) slides in a direction close to the first connecting part (71a) to an extreme position, it stops the swing arm (702) of the first connecting part (71a), so that the swing arm (702) of the first connecting part (71a) cannot swing into the inside of the frame; when the fifth connecting part (71c) slides in a direction away from the first connecting part (71a) to a predetermined position, it releases the stop on the swing arm (702) of the first connecting part (71a), so that the swing arm (702) of the first connecting part (71a) can swing into the inside of the frame.

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