Opposite-opening type limo expansion unit

Abstract

The utility model discloses a split type motor home expansion unit, which belongs to the technical field of motor homes and comprises two symmetrical turnover cabinets. The outer sides of the front ends of the overturning cabinets are hinged to the tail of the vehicle body. A drawing cabinet is inserted into the turnover cabinet; one end of the movable floor is hinged with the lower part of the vehicle body; one end of the movable top plate is hinged to the top of the vehicle body; and one end of the movable wall plate is hinged to the lower surface of the movable top plate. Compared with the original state, the expanded house body can be expanded by about four times to the maximum extent, the use area during parking is greatly increased, and good space feeling is provided for a user; and the device can be retracted during driving without hindering driving.

Description

Technical Field

[0001] The utility model belongs to the technical field of RVs and relates to an expansion unit for a split RV. Background Art

[0002] A motorhome with an expandable compartment can partially be pulled out when parked and partially retracted when driving. Such motorhomes are shown in the patent "C-type flat-head expandable motorhome" with publication number CN214295744U and the patent "Expandable motorhome frame and motorhome" with publication number CN216153862U. Taking the patent with publication number CN216153862U as example 1, let the projection area of ​​its movable expansion part be B, as shown in FIG. Fig. 9 As shown, compared with the initial state, the expanded state can only increase the projection area of ​​one B at most. The defect of the RV expansion structure of Example 1 is that it can only expand the projection area by one time at most. In order to increase the projection area after expansion, it is necessary to occupy the space inside the car in the initial state, and the space inside the RV is limited and precious, so the degree of pull-out expansion is not large enough, and the use space when parking is still cramped, affecting the user's satisfaction with the space. In the prior art, there is also a patent "A RV Folded and Expanded" with a publication number of CN 219277344 U, which is used as Example 2. This type of expansion unit is a fully foldable method, that is, all the walls of the expansion space are foldable, and all the walls are stacked together after folding. The defect of this type of expansion unit is that after the fully folded method is folded, all the walls are stacked together, the storage space is lost, and it does not have the function of storing items. The items required in the expanded space need to find another storage location in the RV, so the space of Example 2 is greatly expanded, but the storage function is lost, and the practicality is reduced. In summary, Example 1 is a pull-out type with storage function, but the expansion degree is limited. It occupies more space in the car after being folded, and the space utilization rate is not high, but it is suitable for setting a sofa in the pull-out unit so that it can be used both after being folded and expanded, but it is not suitable for use as a kitchen. Example 2 has a large expansion degree, but does not have a storage function and is not practical. Especially for the situation where there is a kitchen on the RV, the kitchen is only used when the car is parked, and the space occupied in the car should be reduced as much as possible when driving. Examples 1 and 2 are not suitable for use as kitchens. The kitchen of the RV needs to be folded when driving to save space, but it can store pots, pans, oil, salt, sauce, vinegar and other kitchen supplies. It is expanded when parked to leave enough operating space for the operator. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a double-door RV expansion unit, the purpose of which is to be suitable for use as a kitchen. Under the condition of limited RV space, the expansion area when parking is increased, and the satisfaction of RV users with space requirements is improved. The unit can also be retracted during driving without affecting driving safety, and still has a certain storage function for storing kitchen supplies.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-door RV expansion unit, comprising two symmetrical flip cabinets; the front end outer sides of the two flip cabinets are respectively hinged to the rear of the vehicle body, so that the two flip cabinets can be opened relatively to each other; a pull-out cabinet is inserted into the flip cabinet; one end of the movable floor is hinged to the lower part of the vehicle body, and when the movable floor is opened, its left and right sides are connected to the bottom plates of the flip cabinet and the pull-out cabinet; one end of the movable top plate is hinged to the top of the vehicle body, and when the movable top plate is opened, its left and right sides are connected to the top plates of the flip cabinet and the pull-out cabinet; one end of the movable wall panel is hinged to the lower surface of the movable top plate, and when the movable wall panel is opened, its left and right sides are connected to the rear panels of the two pull-out cabinets, and its lower end is connected to the upper surface of the movable floor.

[0005] As a further optimization, the top plate and the floor of the flip cabinet are both provided with dovetail grooves; the top plate and the floor of the pull-out cabinet are both provided with dovetail heads corresponding to the dovetail grooves, which are used for plugging the pull-out cabinet into the flip cabinet.

[0006] As a further optimization, it also includes a plurality of legs; the legs are detachably mounted on the lower ends of the movable floor, the flip cabinet and the pull-out cabinet.

[0007] As a further optimization, slidable latch members are provided on the left and right sides of the movable floor, and the ends of the latch members can be inserted into the preset pin holes of the bottom plate of the flip cabinet or the bottom plate of the pull-out cabinet.

[0008] As a further optimization, insertion holes are respectively opened on the bottom plates of the movable floor and the pull-out cabinet; the two ends of the U-shaped pin are respectively inserted into a pair of the insertion holes to fix the movable floor and the pull-out cabinet into one; sink grooves are respectively provided at the movable floor and the pull-out cabinet corresponding to the insertion holes, so that when the U-shaped pin is inserted into the pair of the insertion holes, the upper end of the U-shaped pin is lower than the upper surface of the bottom plates of the movable floor and the pull-out cabinet; there are multiple U-shaped pins, and there are multiple pairs of corresponding insertion holes and sink grooves.

[0009] As a further optimization, a plurality of slots are provided on the rear upper surface of the movable floor; a movable plug plate is provided on the inner side of the lower end of the movable wall panel, which is used to fix the movable wall panel and the movable floor into one when the plug plate is inserted into the slot; the plug plate is T-shaped with a larger upper portion and a smaller lower portion, and is movably embedded in a preset T-slot of the movable wall panel, a hand hole is provided at the upper end, and the lower end is used to be inserted into the slot; a slot cover plate covers the outer side of the lower portion of the T-slot and is mounted on the movable wall panel by screws.

[0010] As a further optimization, two sealing strip slots are provided on the left and right sides of the movable floor, and the two sealing strip slots on each side are arranged up and down, and the two sealing strips used for installation respectively abut the bottom plate end surfaces of the flip cabinet and the pull-out cabinet.

[0011] As a further optimization, two sealing strip grooves are provided on the left and right sides of the movable top panel, and the two sealing strip grooves on each side are arranged up and down, and the two sealing strips used for installation respectively abut the end surfaces of the top panels of the flip cabinet and the pull-out cabinet; sealing strip grooves are provided on the left and right sides of the movable wall panel, and the sealing strips used for installation abut the end surfaces of the rear panels of the two pull-out cabinets.

[0012] As a further optimization, door frame columns are fixedly connected to both sides of the rear end of the vehicle body; an extension plate is fixedly connected to the rear end of the door frame column; the front end of the flip cabinet is hinged to the end of the extension plate; the rear end of the interior floor of the vehicle body is located behind the door frame column, and the front end of the movable floor is hinged to the rear end of the interior floor.

[0013] As a further optimization, a magnetic attraction plate is provided on the inner side of the movable wall panel, so as to enable the movable wall panel and the movable top panel to be attracted and connected when the movable wall panel is closed.

[0014] As a further optimization, a door lock assembly is provided at the joint of the two flip cabinets, so that the two flip cabinets can be fixedly connected into one body through the door lock assembly when the two flip cabinets are closed.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the expanded room of the utility model can be expanded by about 4 times compared with the initial state, which greatly increases the usable area when parking and provides users with a good space experience; and can be retracted when driving without hindering driving. Among them, the space in the pull-out cabinet is an independent storage space, which can store stoves, range hoods, pots and pans, oil, salt, sauce, vinegar and other kitchen supplies, has good practicality, and is suitable for use as a kitchen in a motorhome. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the expanded room after the expanded room body of the embodiment of the utility model is folded;

[0017] Figure 2 This is a schematic diagram of the structure of the expanded room after the expansion room of the embodiment of the utility model is unfolded;

[0018] Figure 3 It is a schematic diagram of the top view of the structure of the first to fourth steps when the embodiment of the utility model is expanded;

[0019] Figure 4 It is a schematic diagram of the local structure inside the expansion room of an embodiment of the utility model;

[0020] Figure 5 A schematic diagram of the connection structure of the movable top plate and the movable wall plate of an embodiment of the utility model;

[0021] Figure 6 It is a partial structural schematic diagram of the hinged part of the movable floor of an embodiment of the utility model;

[0022] Figure 7 It is a partial structural schematic diagram of the U-shaped pin of an embodiment of the utility model;

[0023] Figure 8 It is a schematic diagram of the local structure of the plug board of an embodiment of the utility model, that is, Figure 4 A partial enlarged view of point C;

[0024] Fig. 9 This figure is used for background technology.

[0025] The correspondence between the technical features and the reference numerals in the figure is: body 1; door frame column 11; extension plate 12; interior floor 13; floor hinge axis 14; flip cabinet 2; dovetail groove 21; door lock assembly 22; pull-out cabinet 3; dovetail head 31; plug hole 32; U-shaped pin 33; countersunk groove 34; movable floor 4; slot 41; plug plate 42; hand hole 43; sealing strip slot 44; movable top plate 5; movable wall panel 6; magnetic plate 61; T-slot 62; slot cover plate 63; support leg 7. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] For examples, see Figure 1-8The utility model provides a technical solution: a double-leaf RV expansion unit, comprising a pair of flip cabinets 2 arranged at the rear of a body 1 of the RV; the front outer sides of the two flip cabinets 2 are respectively hinged to the two sides of the rear of the body 1, so that the two flip cabinets 2 become double-leaf doors arranged at the rear of the body 1; a pull-out cabinet 3 is inserted in the flip cabinet 2, so that when the flip cabinet 2 is opened, the pull-out cabinet 3 can be pulled out of the flip cabinet 2; one end of a movable floor 4 is hinged to the lower part of the body 1, and when the movable floor 4 is opened, its left and right sides are connected with the bottom plates of the flip cabinet 2 and the pull-out cabinet 3; one end of a movable top plate 5 is hinged to the top of the body 1, and when the movable top plate 5 is opened, its left and right sides are connected with the top plates of the flip cabinet 2 and the pull-out cabinet 3; one end of a movable wall panel 6 is hinged to the lower surface of the movable top plate 5, and when the movable wall panel 6 is opened, its left and right sides are connected with the rear panels of the two pull-out cabinets 3, and its lower end abuts against the upper surface of the movable floor 4. The two flip cabinets 2 are fixed to the rear of the vehicle body 1 through a door lock assembly 22. The inner panels of the two flip cabinets 2 and the two drawer cabinets 3 are removed to expand the internal space, and horizontal partitions can be set to place items, but they cannot hinder the drawing of the drawer cabinets 3.

[0028] When in use, the first step is to open the two flip cabinets 2 so that each flip cabinet 2 rotates 90 degrees, and the second step is to pull out the pull-out cabinet 3; the third step is to open the movable floor 4 until it is horizontal. At this time, the two sides of the movable floor 4 are respectively connected with the two flip cabinets 2 and the pull-out cabinet 3. Preferably, the legs 7 are installed at the lower ends of the movable floor 4, the flip cabinet 2 and the pull-out cabinet 3 to improve the supporting strength of the movable floor 4 and facilitate the next operation of the personnel; the fourth step is to open the movable top plate 5 until it is horizontal. At this time, the two sides of the movable top plate 5 are respectively connected with the two flip cabinets 2 and the pull-out cabinet 3; the fifth step is to open the movable wall panel 6 until it is vertical. At this time, the lower end of the movable wall panel 6 abuts against the upper end of the movable floor 4, and its two sides are respectively connected with the rear panels of the two pull-out cabinets 3. Thus, a closed expansion room is formed, wherein the two flip cabinets 2, the two drawer cabinets 3 and the movable wallboard 6 together constitute the wall of the expansion room, the two flip cabinets 2, the two drawer cabinets 3 and the movable floor 4 together constitute the bottom plate of the expansion room, and the two flip cabinets 2, the two drawer cabinets 3 and the movable top plate 5 together constitute the top plate of the expansion room. At this time, compared with the initial state when the two flip cabinets 2 are closed, the maximum expansion can be about 4 times, which greatly increases the usable area when parking and provides users with a good sense of space. At this time, the expansion room can be used as a kitchen, and dining utensils and food can be placed inside it, which is convenient for users and provides convenience for long-term parking life. In addition, before driving, the above steps are implemented in reverse order, and each component is retracted one by one. When the two flip cabinets 2 are closed, it does not hinder the driving of the vehicle.

[0029] In order to enable the flip cabinet 2 and the pull-out cabinet 3 to be slidably connected, the top plate and the floor of the flip cabinet 2 are both provided with dovetail grooves 21; the top plate and the floor of the pull-out cabinet 3 are both provided with dovetail heads 31 corresponding to the dovetail grooves 21, which are used to plug the pull-out cabinet 3 into the flip cabinet 2.

[0030] In order to improve the supporting force and make the expanded room more stable, a plurality of legs 7 are also included; the legs 7 are detachably mounted on the lower ends of the movable floor 4, the flip cabinet 2 and the drawer cabinet 3. The legs 7 can be stored in the vehicle body 1 when not in use, and can be carried with the vehicle and taken out for use when the vehicle is parked.

[0031] In order to ensure the stable connection of the bottom plate of the expanded room, the bottom plates of the movable floor 4 and the drawer cabinet 3 are provided with sockets 32 respectively; the two ends of the U-shaped pin 33 are respectively inserted into a pair of the sockets 32, so that the movable floor 4 and the drawer cabinet 3 are fixedly connected as one; the movable floor 4 and the drawer cabinet 3 are respectively provided with sinks 34 corresponding to the sockets 32, so that when the U-shaped pin 33 is inserted into a pair of the sockets 32, its upper end is lower than the upper surface of the bottom plate of the movable floor 4 and the drawer cabinet 3; there are multiple U-shaped pins 33, and there are multiple pairs of corresponding sockets 32 and sinks 34. It can be seen that the U-shaped pin 33 sinks in the sink 34 without protrusions, which is convenient for use. The U-shaped pin 33 forms a plug connection with a pair of sockets 32, which can limit the rotation angle of the flip cabinet 2 on the one hand, and the pulling length of the drawer cabinet 3 on the other hand, so that the flip cabinet 2 and the drawer cabinet 3 are closely close to the movable floor 4, thereby making the bottom plate of the expanded room more stable.

[0032] Similarly, the above-mentioned latch connection can also be provided between the movable wall panel 6 and the rear panel of the drawer cabinet 3 to make the wall surface of the expanded room more stable.

[0033] Preferably, the left and right sides of the movable floor 4 are provided with sealing strip slots 44, and there are two sealing strip slots 44 on one side, arranged up and down, and the two sealing strips for installation respectively abut against the bottom plate end surfaces of the flip cabinet 2 and the pull-out cabinet 3, so as to adapt to the bottom plate drop when the flip cabinet 2 and the pull-out cabinet 3 are slidably connected. The sealing strip has a notch corresponding to the sink 34, which does not interfere with the U-shaped pin 33.

[0034] Similarly, the left and right sides of the movable top plate 5 are provided with sealing strip slots 44, and there are two sealing strip slots 44 on one side, arranged up and down, and the two sealing strips for installation respectively abut against the top plate end faces of the flip cabinet 2 and the drawer cabinet 3; the left and right sides of the movable wall plate 6 are provided with sealing strip slots 44, and the sealing strips for installation abut against the rear panel end faces of the two drawer cabinets 3. Therefore, the movable top plate 5 and the movable wall plate 6 can be well sealed with the flip cabinet 2 and the drawer cabinet 3.

[0035] In order to make the movable wall panel 6 more stable, a plurality of slots 41 are provided on the upper surface of the rear part of the movable floor 4; a movable plug-in plate 42 corresponding to the slots 41 is provided on the inner side of the lower end of the movable wall panel 6, which is used to fix the movable wall panel 6 and the movable floor 4 into one when the plug-in plate 42 is inserted into the slots 41; the plug-in plate 42 is T-shaped with a larger upper portion and a smaller lower portion, and is movably embedded in the T-shaped slot 62 preset in the movable wall panel 6, and a hand-grip hole 43 is provided at the upper end thereof, and the lower end thereof is used to be inserted into the slots 41; the slot cover plate 63 covers the lower outer side of the T-shaped slot 62 and is installed on the movable wall panel 6 by screws. It can be seen that the T-shaped slot 62 is used to accommodate the plug-in plate 42, the slot cover plate 63 is used to limit the plug-in plate 42 to prevent the plug-in plate 42 from being separated from the T-shaped slot 62, and the hand-grip hole 43 is used to pull the plug-in plate 42; when the plug-in plate 42 is inserted into the slot 41, the rotation angle of the movable floor 4 and the movable wall panel 6 is limited, so that the position is fixed.

[0036] Among them, the flip cabinet 2, the movable top plate 5 and the movable floor 4 are all hinged to the door frame at the rear of the vehicle body 1. In order to avoid a large gap between the flip cabinet 2 and the movable floor 4 after the flip cabinet 2 is opened; and to meet the storage space requirements of the movable top plate 5 and the movable wall plate 6 after folding, the hinge positions of the flip cabinet 2 and the movable floor 4 need to be optimized. The specific optimization scheme is that the two sides of the rear end of the vehicle body 1 are respectively fixed with door frame columns 11; the extension plate 12 is fixed to the rear end of the door frame column 11; the front end of the flip cabinet 2 is hinged to the end of the extension plate 12; the rear end of the interior floor plate 13 of the vehicle body 1 is located behind the door frame column 11, as shown by the floor hinge axis 14 in the attached figure, and the front end of the movable floor 4 is hinged to the rear end of the interior floor plate 13. After folding, the movable floor 4, the movable top plate 5 and the movable wall plate 6 have enough storage space. When the movable floor 4 is opened, its two sides are flush with the inner sides of the two extension plates 12 without any gap; in other words, the movable floor 4 is hinged at the rear of the door frame column 11, which is a preferred embodiment.

[0037] In order to ensure that the movable wall panel 6 and the movable top panel 5 are fixedly connected together when they are closed and reduce shaking in the folded state, a magnetic attraction plate 61 is provided on the inner side of the movable wall panel 6 for connecting the movable wall panel 6 and the movable top panel 5 by attraction when the movable wall panel 6 is closed.

[0038] The advantage of this embodiment is that Figure 3As shown, assuming that the projection area of ​​each flip cabinet 2 is A, then in the initial state (i.e., in the folded state), it has a projection area of ​​2A; after flipping the two flip cabinets 2 in the first step, it has a projection area of ​​4A; after pulling out the two pull-out cabinets 3 in the second step, it has a projection area of ​​8A; the third to fourth steps are to open the movable floor 4 and the movable top plate 5, and finally open the movable wall panel 6 to form a closed space. It can be seen that if the overlapping part between the pull-out cabinet 3 and the flip cabinet 2 is ignored, the expanded room body can be expanded by a maximum of about 4 times compared with the initial state, which greatly increases the usable area when parking and provides users with a good sense of space; and it can be retracted when driving without hindering driving. Among them, the space in the pull-out cabinet 3 is an independent storage space. Before and after the expansion, the space in the pull-out cabinet 3 remains unchanged, and can be used to store stoves, range hoods, pots and pans, oil, salt, sauce, vinegar and other kitchen supplies. It has good practicality. This embodiment is suitable for use as a kitchen in a motorhome. In addition, from Figure 3 It can be seen that the 2A projection area in the initial state is almost the same as the projection area of ​​the two drawer cabinets 3, indicating that the space in the folded state can almost be used to store items, with large capacity and no waste of space. Among the expanded 8A projection area, at least the 4A projection area corresponding to the movable floor 4 can be used as the operator's activity space, which is large enough to accommodate more than two people working at the same time.

[0039] The parts not described in detail in the present utility model are all prior art. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A split-type RV expansion unit, characterized in that: It comprises two symmetrical flip cabinets (2); the front ends of the two flip cabinets (2) are respectively hinged to the rear of the vehicle body (1) so that the two flip cabinets (2) can be opened relative to each other; and a pull-out cabinet (3) is inserted into the flip cabinet (2); One end of the movable floor (4) is hinged to the lower part of the vehicle body (1); when the movable floor (4) is opened, its left and right sides are butted against the bottom plates of the flip cabinet (2) and the pull-out cabinet (3); One end of the movable top plate (5) is hinged to the top of the vehicle body (1); when the movable top plate (5) is opened, its left and right sides are butted against the top plates of the flip cabinet (2) and the drawer cabinet (3); One end of the movable wall panel (6) is hinged to the lower surface of the movable top panel (5); when the movable wall panel (6) is opened, its left and right sides are butted against the rear panels of the two drawer cabinets (3), and its lower end is butted against the upper surface of the movable floor (4).

2. The expansion unit of a split-type RV according to claim 1, characterized in that: The top plate and the bottom plate of the flip cabinet (2) are both provided with dovetail grooves (21); the top plate and the bottom plate of the pull-out cabinet (3) are both provided with dovetail heads (31) corresponding to the dovetail grooves (21) for plugging the pull-out cabinet (3) into the flip cabinet (2).

3. The expansion unit of a split-type RV according to claim 1, characterized in that: It also comprises a plurality of supporting legs (7); the supporting legs (7) are detachably mounted on the lower ends of the movable floor (4), the turning cabinet (2) and the pull-out cabinet (3).

4. The expansion unit of a split-type RV according to claim 1, characterized in that: Insertion holes (32) are respectively provided on the bottom plates of the movable floor (4) and the drawer cabinet (3); the two ends of a U-shaped pin (33) are respectively inserted into a pair of the insertion holes (32) to fix the movable floor (4) and the drawer cabinet (3) together; sink grooves (34) are respectively provided at the movable floor (4) and the drawer cabinet (3) at locations corresponding to the insertion holes (32) so that when the U-shaped pin (33) is inserted into the pair of the insertion holes (32), the upper end of the U-shaped pin (33) is lower than the upper surface of the bottom plates of the movable floor (4) and the drawer cabinet (3); there are a plurality of U-shaped pins (33), and there are a plurality of pairs of corresponding insertion holes (32) and sink grooves (34).

5. The expansion unit of a split-type RV according to claim 1, characterized in that: A plurality of slots (41) are provided on the upper rear surface of the movable floor (4); a movable plug plate (42) is provided on the inner side of the lower end of the movable wall panel (6), and is used to fix the movable wall panel (6) and the movable floor (4) into one piece when the plug plate (42) is inserted into the slot (41); the plug plate (42) is T-shaped with a larger upper portion and a smaller lower portion, and is movably embedded in a preset T-shaped slot (62) of the movable wall panel (6); a hand hole (43) is provided at the upper end, and the lower end is used to be inserted into the slot (41); a slot cover plate (63) covers the lower outer side of the T-shaped slot (62), and is mounted on the movable wall panel (6) by screws.

6. The expansion unit of a split-type RV according to claim 1, characterized in that: Two sealing strip slots (44) are provided on the left and right sides of the movable floor (4), and the two sealing strip slots (44) on each side are arranged up and down, and the two sealing strips used for installation respectively abut against the bottom plate end surfaces of the flip cabinet (2) and the drawer cabinet (3).

7. The expansion unit of a split-type RV according to claim 1, characterized in that: The movable top plate (5) is provided with two sealing strip slots (44) on both sides, the two sealing strip slots (44) on each side are arranged up and down, and the two sealing strips used for installation respectively abut against the top plate end surfaces of the flip cabinet (2) and the drawer cabinet (3); the movable wall plate (6) is provided with sealing strip slots (44) on both sides, and the sealing strips used for installation abut against the rear panel end surfaces of the two drawer cabinets (3).

8. The expansion unit of a split-type RV according to claim 1, characterized in that: Door frame columns (11) are fixedly connected to both sides of the rear end of the vehicle body (1); an extension plate (12) is fixedly connected to the rear end of the door frame column (11); the front end of the flip cabinet (2) is hinged to the end of the extension plate (12); the rear end of the interior floor plate (13) of the vehicle body (1) is located behind the door frame column (11), and the front end of the movable floor (4) is hinged to the rear end of the interior floor plate (13).

9. The expansion unit of a split-type RV according to claim 1, characterized in that: A magnetic attraction plate (61) is provided on the inner side of the movable wall panel (6) for causing the movable wall panel (6) and the movable top panel (5) to be attracted and connected when the movable wall panel (6) is closed.

10. The expansion unit of a split-type RV according to claim 1, characterized in that: A door lock assembly (22) is provided at the joint of the two flip cabinets (2) and is used for fixing the two flip cabinets (2) into one body through the door lock assembly (22) when the two flip cabinets (2) are closed.

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