Space extension mechanism of automobile

Abstract

To provide a space extension mechanism of an automobile capable of effectively extending an internal space of a passenger compartment.SOLUTION: A space extension mechanism of an automobile includes a space extension assembly and a rolling connection assembly. The space extension assembly is attached to a rear part of a passenger compartment via the rolling connection assembly. When a back door of the passenger compartment is opened, the space extension assembly extends rearward and downward by pulling and reverse operation to form a housing structure, and an opening side of the housing structure faces the passenger compartment of an automobile body and communicates with an internal space of the passenger compartment.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to the field of automotive components, and in particular to a space expansion mechanism for an automobile. [Background technology]

[0002] According to Chapter 4, Article 1.3 of the industry standard "Garage Building Design Standards" JGJ100-98, Table 4.1.3 "Minimum indoor ceiling height within garages" contains detailed regulations regarding the height of indoor garages, specifically as follows: The minimum net height for indoor garages for miniature cars and small cars is 2.2 meters. The minimum net height for indoor garages for light vehicles is 2.8 metres, The minimum net height for indoor garages for medium, large and articulated buses is 3.4 metres; The minimum net height for indoor garages for medium-sized, large and articulated trucks is 4.2 metres. Therefore, according to standard regulations, the height of garages in buildings such as high-rise buildings generally needs to have a net height of at least 2.2 meters.

[0003] Vehicle height is defined as the distance from the ground to the highest point of the vehicle. The highest point is the location of the highest point on the top of the passenger compartment, but does not include the length of the roof antenna. A search on Baidu reveals that family cars (sedans) have a length between 3800mm and 4300mm, a width between 1600mm and 1800mm, and a height between 1400mm and 1600mm, while the height of SUVs is generally within the range of 1600mm to 2400mm. The heights of various classes of SUVs are as follows: 1) small SUVs are generally 1720mm, 2) compact SUVs are generally 1950mm, 3) mid-size SUVs are generally 2000mm, 4) large SUVs are 2300mm, and the largest full-size SUVs are 2400mm.

[0004] For most families, the family car is mainly an ordinary sedan or a small to medium-sized SUV. This type of car has the advantage of being able to drive smoothly into the garage and park conveniently, but this type of car is mainly used to carry people and small amounts of goods, and when used for tourism or lodging, the size of the interior space is limited, and there are many disadvantages. For example, there is no toilet facility inside the car (only large RVs have toilet facilities), so tourist parking is limited to campsites and parking lots with toilets, which greatly reduces the convenience of overnight parking. Especially when driving through spacious uninhabited areas, on a long commute, or in special situations where you need to temporarily use the toilet, an ordinary family car cannot meet this need.

[0005] Therefore, how to develop a space expansion mechanism for an automobile and, through assembling it into an ordinary automobile, expand the interior space of the automobile, provide a stable privacy space, and meet the needs of overnight travel, personal toilets, baths, etc., has become a technical problem that must be solved as soon as possible by those skilled in the art. Summary of the Invention

[0006] The present invention aims to provide a space expansion mechanism for automobiles, so as to solve the problems of the traditional family car having a small space, which makes travel and accommodation inconvenient, etc. To solve the above technical problems, the present invention uses the following technical solutions:

[0007] The space expansion mechanism of the present invention for an automobile comprises a space expansion assembly and a rolling connection assembly, and the space expansion assembly is movably attached to the rear of the passenger compartment of the automobile body via the rolling connection assembly. When the back door of the passenger compartment is opened in use, the space expansion assembly is expanded rearward and downward by pulling and reversing operations to form a housing structure, and the opening side of the housing structure faces the passenger compartment of the automobile body and communicates with the internal space of the passenger compartment. Preferably, the space expansion assembly is slidably connected to both the left and right sides of the rear part of the vehicle compartment of the vehicle body or to an upper part of the rear part of the vehicle compartment.

[0008] Preferably, the space expansion assembly is connected to both the left and right sides of the rear of the passenger compartment of the vehicle body via a slide rail connection assembly or a guide sliding positioning plate, the slide rail connection assembly includes a side guide chute and a side slide rail, the slide rail is slidably connected to the side guide chute, the side guide chute is attached to both the left and right sides of the rear of the passenger compartment of the vehicle body, the side slide rail is connected to the space expansion assembly, the guide sliding positioning plate is attached to both the left and right sides of the rear of the passenger compartment of the vehicle body, and the space expansion assembly is slidably connected within the chute of the guide sliding positioning plate. Preferably, the space expansion assembly includes three parts: a side plate assembly, a back plate assembly, and a bottom plate, which are connected to each other;

[0009] The side plate assembly includes a main side plate, an upper side plate, and a lower side plate, the upper side plate and the lower side plate are connected to both ends of the main side plate in a telescopic manner, and the side slide rail is connected to an outer surface of the main side plate;

[0010] The back plate assembly comprises an upper back plate, a main back plate and a lower back plate arranged from top to bottom, the main back plate, the upper back plate and the lower back plate being reversibly connected to the outer edges of the main side plate, the upper plate and the lower plate, respectively, and the bottom plate being connected to the bottom edge of the lower plate.

[0011] Preferably, the bottom plate adopts a single plate structure or a symmetrical double plate structure, in the case of a single plate structure, both ends of the bottom plate are connected to the bottom sides of the two lower plates via screws, and in the case of a double plate structure, the bottom plate is reversibly connected to the bottom sides of the lower plates via a third rotating connecting member.

[0012] Preferably, the main back panel is hinged to the outer edge of the main side panel via a second rotating connecting member, the upper and lower back panels are both connected to the outer edges of the upper and lower panels via a first rotating connecting member, the upper and lower back panels are folded together adjacent to the upper and lower panels after inversion, the main back panel is parallel to the main side panels after inversion and has a storage gap disposed therein, and the thickness of the storage gap corresponds to the thickness of the upper panel, lower panel, upper back panel and lower back panel after folding.

[0013] Preferably, a clearance step is provided on the inner surfaces of both the upper and lower ends of the main side plate, the depth of the clearance step is greater than or equal to the height of the upper and lower plates, and the height of the upper and lower back plates is less than or equal to the maximum height of the upper and lower plates.

[0014] Preferably, the space expansion assembly is connected to the upper part of the rear part of the passenger compartment of the automobile body via a lifting guide sliding assembly, and the lifting guide sliding assembly includes an upper guide chute and an upper guide sliding plate which are connected to slide integrally, the upper guide chute is attached to the upper part of the rear part of the passenger compartment of the automobile body, and the upper guide sliding plate is attached to the space expansion assembly.

[0015] Preferably, during lifting, the space-expanding assembly is installed on a lifting-folding assembly, the lifting-folding assembly including an upper connecting plate, a folding side plate assembly and a folding back plate assembly, the upper surface of the upper connecting plate is slidably connected to the upper guide chute via the upper guide sliding plate, two groups of the folding side plate assemblies are symmetrically arranged and connected to the left and right edges of the upper connecting plate, and the folding back plate assembly is reversibly connected to the folding side plate assembly.

[0016] Preferably, the folding side panel assembly comprises an upper folding side panel, a middle folding side panel and a lower folding side panel which are folded in sequence, one side edge of the upper folding side panel is connected to a side edge of the upper connecting panel, and the mutually connected edges of the upper folding side panel, the middle folding side panel and the lower folding side panel are integrally connected via a 180° hinge structure or a flexible connecting member;

[0017] the folding back panel assembly comprises an upper folding back panel, a middle folding back panel and a lower folding back panel, the upper folding back panel, the middle folding back panel and the lower folding back panel being connected to the outer edges of the upper folding side panel, the middle folding side panel and the lower folding side panel respectively via a 90° hinge structure or a flexible connecting member;

[0018] The bottom plate further comprises a double-plate structure, and the bottom plate is reversibly connected to the bottom edge of the lower folding side plate via a 90° hinge structure or a flexible connecting member.

[0019] Preferably, the space expansion assembly is designed as a hinged inversion assembly, and the hinged inversion assembly is reversibly connected to the self-adapting positioning structure through a hinge, and the hinged inversion assembly includes an inverted side plate assembly, an inverted back plate assembly and an inverted bottom plate, and the inverted side plate assembly includes a main positioning plate and a lower inverted side plate, the inner side of the main positioning plate is hingedly connected to the self-adapting positioning structure, and a side intermediate transition plate is hingedly connected between the main positioning plate and the lower inverted side plate, and the two adjacent sides of the three are integrally connected through a 90° hinge member;

[0020] The inverted back plate assembly includes a rear upper inverted plate and a rear lower inverted plate, the rear upper inverted plate is hingedly connected to an outer vertical edge of the main positioning plate, the rear lower inverted plate is hingedly connected to an outer vertical edge of the lower inverted side plate, a rear intermediate transition plate is hingedly connected to a bottom edge of the rear upper inverted plate, and the inverted bottom plate is hingedly connected to a bottom edge of the rear lower inverted plate.

[0021] Preferably, the self-adapting positioning structure includes a telescopic rod, the bottom of the telescopic rod is positioned and connected to the bottom of the vehicle compartment through a bottom connecting plate, the positioning hole of the bottom connecting plate overlaps with the positioning hole of the vehicle seat, the upper part of the telescopic rod is connected to an upper positioning plate, a self-adapting block is connected to the upper surface of the upper positioning plate, the self-adapting block is made of a flexible material, an assembly positioning plate is connected to the outer side of the telescopic rod, the assembly positioning plate is provided with a plurality of positioning holes, and the inner edge of the main positioning plate is hingedly connected to the assembly positioning plate.

[0022] Preferably, the space expansion assembly is designed as a roof folding expansion assembly, and the roof folding expansion assembly includes an upper assembly and a lower assembly, the upper assembly includes an upper plate and an upper back plate which are integrally hinged, and the left side of the upper plate is hinged to the rear door of the vehicle compartment, and the lower assembly includes a lower plate, a lower back plate and a bottom plate, and the three plates are integrally hinged at corresponding sides according to the inversion position when opened, and the lower plate and the upper plate are integrally hinged or connected so as to be freely removed, and are in a stacked state when not unfolded, and become a housing structure after unfolding.

[0023] Preferably, the space expansion assembly is designed as a roof folding Z-shaped assembly, the roof folding Z-shaped assembly includes an upper folding assembly, a lower folding assembly and a linear bottom plate, the upper folding assembly includes an upper plate and an upper back plate which are integrally hinged, the left side of the upper plate is hinged to the rear door of the vehicle cabin, the lower folding assembly includes a lower plate and a lower back plate which are integrally hinged, the left and right sides of the two symmetrical lower plates are connected to the linear bottom plate, the three plates are integrally hinged at corresponding sides according to the inverted position when opened, and one edge of the lower plate and the upper plate adjacent to each other is integrally hinged, which is in a stacked state when not unfolded, presents a Z-shape during the unfolding process, and becomes a housing structure after being fully unfolded.

[0024] Preferably, the space expansion assembly is designed as a sliding inverted assembly, and includes an inverted drive assembly, an inverted expansion assembly and a support roller, one end of the inverted drive assembly is connected to both the left and right sides of the rear of the passenger compartment of the automobile body, the other end of the inverted drive assembly is hinged to the side wall of the inverted expansion assembly, the support roller is attached to the rear of the passenger compartment of the automobile body and located below the inverted expansion assembly, and when the back door of the passenger compartment is opened, the inverted drive assembly is activated to expand, driving the inverted expansion assembly to slide backward and invert to vertical, and the plates folded on the inverted expansion assembly are successively expanded to form a housing structure. Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0025] The space expansion mechanism of the present invention comprises a space expansion assembly and a rolling connection assembly, the space expansion assembly is movably attached to the rear of the passenger compartment of the automobile body via the rolling connection assembly, and the space expansion assembly is connected to both the left and right sides of the rear of the passenger compartment of the automobile body via a slide rail connection assembly or a guide slide positioning plate, or is connected to the upper part of the rear of the passenger compartment of the automobile body via a lifting guide slide assembly. When in use, when the back door of the passenger compartment is opened, the space expansion assembly is expanded by pulling and reversing operations to become a housing structure, and the opening side of the housing structure faces the passenger compartment of the automobile body and communicates with the internal space of the passenger compartment.

[0026] The present invention is ingeniously devised, has a compact and rational structure, and the space expansion assembly is folded and rationally stored inside the vehicle cabin, and is located at the rear of the vehicle cabin, so that it does not occupy passenger space. When the rear door of the vehicle cabin is opened, the space expansion assembly expands, effectively expanding the internal space of the vehicle cabin, providing excellent stability and privacy, and meeting the needs of nighttime travel, temporary toileting, bathing, etc., and improving the convenience of personnel movement. [Brief description of the drawings]

[0027] Next, the present invention will be further described in conjunction with the drawings. [Figure 1] FIG. 1 is a schematic diagram (embodiment 1) of a space expansion mechanism for an automobile according to the present invention in a folded state inside the automobile. [Diagram 2] FIG. 2 is a schematic diagram (embodiment 1) of a state in the process of expanding the space expansion mechanism of an automobile according to the present invention. [Diagram 3] FIG. 3 is a schematic diagram of a space expansion mechanism for an automobile according to the present invention in a fully open state (embodiment 1). [Figure 4] FIG. 4 is a front view of the stretch and fold assembly of the present invention. [Diagram 5] FIG. 5 is a side view of the stretch and fold assembly of the present invention. [Figure 6] FIG. 6 is a schematic diagram (partially overlapped) of a stretch-fold assembly of the present invention. [Figure 7] FIG. 7 is a schematic diagram of the vehicle space expansion mechanism according to the present invention in a folded state inside the vehicle (Example 2). [Figure 8] FIG. 8 is a schematic diagram of a state in the process of expanding the space expansion mechanism of an automobile according to the present invention (Example 2). [Figure 9] FIG. 9 is a side view of a stretch fold assembly according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a schematic diagram of the vehicle space expansion mechanism according to the present invention in a folded state inside the vehicle (third embodiment). [Figure 11] FIG. 11 is a schematic diagram of a connecting structure of a guide sliding positioning plate in the third embodiment of the present invention. [Figure 12] FIG. 12 is a schematic diagram of the vehicle space expansion mechanism according to the present invention in a folded state inside the vehicle (Example 4). [Figure 13] FIG. 13 is a schematic diagram of a state in the process of expanding the space expansion mechanism of an automobile according to the present invention (Example 4). [Figure 14] FIG. 14 is a side view of a lifting and folding assembly according to a fourth embodiment of the present invention. [Figure 15] FIG. 15 is a schematic diagram of a hinge structure of the present invention. [Figure 16] FIG. 16 is a schematic diagram of a usage process in the first embodiment of the present invention. [Figure 17] FIG. 17 is a schematic diagram of a usage process in the fourth embodiment of the present invention. [Figure 18] FIG. 18 is a schematic diagram of the fifth embodiment of the present invention in a folded state inside the vehicle. [Figure 19] FIG. 19 is a schematic diagram of the half-open state in the fifth embodiment of the present invention. [Figure 20] FIG. 20 is a schematic diagram of the fully open state in the fifth embodiment of the present invention. [Figure 21] FIG. 21 is a schematic diagram of a folding structure of a hinge inversion assembly in accordance with a fifth embodiment of the present invention. [Figure 22] FIG. 22 is a schematic diagram of the sixth embodiment of the present invention in a folded state inside the vehicle. [Diagram 23] FIG. 23 is a schematic diagram of the spreading process in Example 6 of the present invention. [Figure 24] FIG. 24 is a schematic diagram of the sixth embodiment of the present invention in an expanded state. [Diagram 25] FIG. 25 is a schematic diagram of the half-open state in the seventh embodiment of the present invention. [Figure 26] FIG. 26 is a schematic diagram of the rear view (with the back door of the vehicle compartment open) in the eighth embodiment of the present invention. [Figure 27] FIG. 27 is a side view (stored state) of the eighth embodiment of the present invention. [Figure 28] FIG. 28 is a schematic diagram of the fully open state in the eighth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] In order to make the technical problem, technical solution and beneficial effects of the present invention clearer, the present invention will be described in more detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to illustrate the present invention and are not used to limit the present invention.

[0029] As shown in FIGS. 1 to 25, the space expansion mechanism for an automobile includes a space expansion assembly and a rolling connection assembly, and the space expansion assembly is attached to the rear of the passenger compartment of an automobile body 100 via the rolling connection assembly. When the back door 101 of the passenger compartment is opened during use, the space expansion assembly expands rearward and downward by pulling and reversing operations to form a housing structure, and the opening side of the housing structure faces the passenger compartment of the automobile body 100 and communicates with the internal space of the passenger compartment.

[0030] Specifically, as shown in Figures 18 and 19, the rolling connection assembly uses a self-adaptation positioning structure, the self-adaptation positioning structure includes an expansion rod 102, the bottom of the expansion rod 102 is positioned and connected to the bottom of the vehicle cabin through a bottom connecting plate 103, the positioning hole of the bottom connecting plate 103 overlaps with the positioning hole of the vehicle seat, and is synchronously fixed by the positioning bolt of the seat, the upper part of the expansion rod 102 is connected to an upper positioning plate 104, and a self-adaptation block is connected to the upper surface of the upper positioning plate 104, the self-adaptation block is made of flexible material, preferably sponge, polyurethane or rubber block, so as to adapt to various roof shapes, an assembly positioning plate 105 is connected to the outer side of the expansion rod 102, and the assembly positioning plate 105 is provided with a number of positioning holes so as to cooperate with other rolling connection members. In a specific embodiment, the space expansion assembly is slidably connected to both the left and right sides of the rear of the passenger compartment of the automobile body 100 or to the upper part of the rear of the passenger compartment.

[0031] Specifically, the space expansion assembly is connected to the left and right sides of the rear of the passenger compartment of the automobile body 100 through a slide rail connection assembly 200 or a guide sliding positioning plate 700, the slide rail connection assembly 200 includes a side guide chute 201 and a side slide rail 202, the side slide rail 202 is slidably connected to the side guide chute 201, the side guide chute 201 is mounted on the left and right sides of the rear of the passenger compartment of the automobile body 100, the side slide rail 202 is connected to the space expansion assembly, the guide sliding positioning plate 700 is mounted on the left and right sides of the rear of the passenger compartment of the automobile body 100, and the space expansion assembly is slidably connected in the chute of the guide sliding positioning plate 700. Specifically, the side guide chute 201 or the guide sliding positioning plate 700 is directly connected to the telescopic rod 102 or connected to the assembly positioning plate 105, and the specific connection manner is selected according to the interior space or combination state of the vehicle. In the first embodiment, the space expansion assembly is connected to both the left and right sides of the rear of the passenger compartment of the automobile body 100 via a slide rail connection assembly 200 . As shown in FIGS. 1 to 6, the space expansion assembly includes three parts: a side plate assembly 300, a back plate assembly 400, and a bottom plate 500, which are connected to each other.

[0032] The side panel assembly 300 includes a main side panel 301, an upper side panel 302 and a lower side panel 303, the upper side panel 302 and the lower side panel 303 are telescopically connected to both ends of the main side panel 301, and the side slide rail 202 is connected to the outer surface of the main side panel 301. Specifically, the upper side panel 302 and the lower side panel 303 are connected to the main side panel 301 by using a drawer-type slide structure in cooperation with each other to realize the up and down pulling operation. At the same time, linear motion can also be realized by using automatic driving members such as linear motors and cylinders, and the selection of driving members can reduce the labor intensity of manual operation, and the specific connection manner can be selected according to actual needs.

[0033] The back panel assembly 400 comprises an upper back panel 402, a main back panel 401 and a lower back panel 403 arranged from top to bottom, the main back panel 401, the upper back panel 402 and the lower back panel 403 are reversibly connected to the outer edges of the main side panel 301, the upper panel 302 and the lower panel 303 respectively, and the bottom panel 500 is connected to the bottom edge of the lower panel 303, specifically, the bottom panel 500 can extend directly down to the ground or be suspended a short distance.

[0034] In addition, the support legs 600 may be further installed at the four corners of the bottom plate 500 to increase the load-bearing capacity of the bottom plate, specifically, whether the support legs are required is selected according to the actual extension length of the bottom plate 500, and when installed, the support legs 600 are quickly disassembled and connected to the bottom plate 500, and a positioning groove is provided on the bottom surface of the bottom plate 500 at the position where the support legs 600 are fitted so that the support legs can be quickly installed, and the positioning groove may also be provided with a magnet to ensure the stability of the connection. Specifically, the support legs 600 are installed in a height-adjustable structure, and include an upper positioning leg and a lower telescopic leg, and the upper end of the telescopic leg is inserted into the central positioning hole of the positioning leg, and is positioned and locked by a vertically arranged positioning pin.

[0035] Specifically, the bottom plate 500 adopts a symmetrical double plate structure, in which the bottom plate 500 is reversibly connected to the bottom side of the lower plate 303 via a third rotating connecting member 501 .

[0036] The main back panel 401 is hinged to the outer edge of the main side panel 301 via a second rotating connecting member 405, the upper back panel 402 and the lower back panel 403 are both connected to the outer edges of the upper panel 302 and the lower panel 303 via a first rotating connecting member 404, the upper back panel 402 and the lower back panel 403 are folded together adjacent to the upper panel 302 and the lower panel 303 after being inverted, the main back panel 401 is parallel to the main side panel 301 after being inverted, and a storage gap is disposed in the middle, and the thickness of the storage gap corresponds to the thickness of the upper panel 302, the lower panel 303, the upper back panel 402 and the lower back panel 403 after being folded.

[0037] Specifically, the first rotating connection member 404 and the third rotating connection member 501 only need to select a 0°~90° hinge structure, and the second rotating connection member 405 is also a 90° hinge, and only needs to adjust the connection position, and only needs to ensure a certain gap (parallel to the main back plate) when stacked, and also ensures the flatness of all the plates when stacked. In addition, the first rotating connection member 404, the second rotating connection member 405 and the third rotating connection member 501 can all be replaced with the flexible connection member 908, and only needs to adjust the distance between the plates, and also can adopt a combination structure that combines a hinge structure with a one-sided flexible connection member, thereby ensuring the strength and sealing of the connection.

[0038] Specifically, as shown in FIG. 15, the hinge includes two rolling connecting plates and one hinge pin 120, in which the first rolling connecting plate 110 and the second rolling connecting plate 130 are arranged crosswise or in parallel and mounted on the same hinge pin 120, and a position control spring or step is arranged according to need to position the rotation angle; at the same time, the first rolling connecting plate 110 and the second rolling connecting plate 130 have different lengths, which are adjusted according to the actual folded state after rotation; if a gap is required, one of the rolling connecting plates can be made longer; if not required, they can be designed to have the same length.

[0039] A clearance step is provided on the inner surfaces of both the upper and lower ends of the main side plate 301, and the depth of the clearance step is greater than or equal to the height of the upper plate 302 and the lower plate 303, and the height of the upper back plate 402 and the lower back plate 403 is less than the maximum height of the upper plate 302 and the lower plate 303. As shown in FIG. 16, the use process of this embodiment is as follows: Step 1, open the back door 101 of the vehicle.

[0040] Step 2: The space expansion assembly slides outward. The main side plate 301 drives all the members to slide outward along the side guide chute 201 under the movement of the side slide rail 202. In the initial state, the side plate assembly 300, the back plate assembly 400 and the bottom plate 500 are folded symmetrically into two groups and arranged in the vehicle interior; Step 3, unfolding the space expansion assembly, which mainly includes the following steps: 1) The upper plate 302 and the lower plate 303 are driven by extending the upper back plate 402 and the lower back plate 403 simultaneously in both the up and down directions. 2) The bottom plate 500 is inverted downward to a horizontal position. 3) The lower back plate 403 is flipped outward until it is perpendicular to the lower side plate 303; 4) The main back panel 401 is flipped outward until it is perpendicular to the main side panel 301; 5) The lower back plate 402 is flipped outward until it is perpendicular to the lower plate 302;

[0041] Step 4: Installing the support legs. The four corners of the bottom surface of the base plate 500 are provided with grooves that match the support legs. The support legs 600 can be directly placed vertically in the grooves, and then adjusted to the appropriate height and locked, so that the bottom ends of the support legs are stably supported on the ground. Through the above four steps, the expansion operation of the space expansion assembly can be realized, and through the reverse operation, the storage operation of the space expansion assembly can be realized. In the second embodiment, the space expansion assembly is connected to both the left and right sides of the rear of the passenger compartment of the vehicle body 100 via a slide rail connection assembly 200 .

[0042] As shown in Figures 7 to 9, the overall structure is almost the same as in Example 1, and the difference lies in the structure of the bottom plate 500, which adopts a single-plate structure, and both ends of the bottom plate 500 are connected to the bottom sides of the two lower plates 303 via screws.

[0043] The operation steps of this embodiment are almost the same as those of embodiment 1, except for the first and second steps of step 3, in which the bottom plate 500 of the single-plate structure is extended to a predetermined position together with the lower plate 303, and no secondary inversion process is required.

[0044] As shown in steps 10 to 11 of Example 3, the overall structure is almost the same as that of Example 1, and the difference lies in the structure of the rolling assembly, that is, the space expansion assembly is connected to both the left and right sides of the rear of the passenger compartment of the automobile body 100 via a guide sliding positioning plate 700, and the guide sliding positioning plate 700 is attached to both the left and right sides of the rear of the passenger compartment of the automobile body 100, and the space expansion assembly is slidably connected within the chute of the guide sliding positioning plate 700.

[0045] The operation steps of this embodiment are almost the same as those of embodiment 1, with the difference being in step 2 that the space expansion assembly slides outward, and the main side plate 301 slides all the components outward along the guide sliding positioning plate 700, specifically, rollers 701 or sliders are connected to both ends of the main side plate 301 to realize quick sliding, which is easier to operate and saves time and effort. Example 4, as shown in Figs. 12 to 15, is a lifting structure.

[0046] Specifically, the space expansion assembly is connected to the upper part of the rear of the passenger compartment of the automobile body 100 via a lifting guide sliding assembly 800, and the lifting guide sliding assembly 800 includes an upper guide chute 801 and an upper guide sliding plate 802 that are slidably connected, and the upper guide chute 801 is attached to the upper part of the rear of the passenger compartment of the automobile body 100, and the upper guide sliding plate 802 is attached to the space expansion assembly.

[0047] When lifting, the space-expanding assembly is installed on a lifting folding assembly 900, which includes an upper connecting plate 901, a folding side plate assembly and a folding back plate assembly, the upper surface of the upper connecting plate 901 is slidably connected to the upper guide chute 801 via the upper guide sliding plate 802, two groups of the folding side plate assemblies are symmetrically arranged and connected to the left and right edges of the upper connecting plate 901, and the folding back plate assembly is reversibly connected to the folding side plate assembly.

[0048] The folding side panel assembly includes an upper folding side panel 902, a middle folding side panel 903 and a lower folding side panel 904 that are folded in sequence, one side of the upper folding side panel 902 is connected to a side of the upper connecting panel 901, and the mutually connected edges of the upper folding side panel 902, the middle folding side panel 903 and the lower folding side panel 904 are integrally connected via a 180° hinge structure or a flexible connecting member 908;

[0049] The folding back panel assembly includes an upper folding back panel 905, a middle folding back panel 906 and a lower folding back panel 907, the upper folding back panel 905, the middle folding back panel 906 and the lower folding back panel 907 are connected to the outer edges of the upper folding side panel 902, the middle folding side panel 903 and the lower folding side panel 904 respectively via 90° hinge structures or flexible connecting members 908;

[0050] When the upper folding side panel 902, the middle folding side panel 903, the lower folding side panel 904, the upper folding back panel 905, the middle folding back panel 906 and the lower folding back panel 907 are all connected with a plate material of a certain thickness, it should be noted that the clearance position of the corresponding hinge member is reserved in advance to ensure the flatness after folding; at the same time, a corresponding positioning assembly is installed, and a locking member is installed on the adjacent edges of the two upper folding side panels 902, and the locking members on both sides after overlapping are directly connected to perform positioning and locking; specifically, the locking member can be an assembly of a group of magnets, snaps or hook-and-loop fastener members.

[0051] Specifically, the folding side panel assembly and the folding back panel assembly are made of flexible material and molded, and the inverted folding position can be pre-reserved with appropriate fitting gap and appropriate width to ensure flatness after folding. A cylindrical fabric can be adopted to reduce the weight of the assembly, which is convenient for storage and alignment.

[0052] Further, it comprises a bottom plate 500, which adopts a double plate structure, and is reversibly connected to the bottom side of the lower folding side plate 904 via a 90° hinge structure or a flexible connecting member 908. In addition, support legs 600 are further installed at the four corners of the bottom plate 500, and the support legs 600 are quickly disassembled and connected to the bottom plate 500, specifically, whether the support legs are needed can be selected according to the actual extension length of the bottom plate 500. As shown in FIG. 17, the use process of this embodiment is as follows: Step 1, open the back door 101 of the vehicle.

[0053] Step 2: The lifting and folding assembly 900 slides outward. The upper guide slide plate 802 on the upper surface of the upper connecting plate 901 slides outward along the slide plate chute 801 at the top of the vehicle cabin. Under the initial state, the lifting and folding assembly 900 is folded together and placed at the top of the vehicle cabin; Step 3, unfolding the lifting and folding assembly 900, mainly includes the following steps: 1) The upper folding side panel 902 is inverted 90° downward to assume a vertical position; 2) The intermediate folding side panel 903 is inverted 180° downward to assume a vertical position; 3) The lower folding side panel 904 is rotated 180 degrees downward to assume a vertical position; 4) The bottom plate 500 is inverted downward by 90° to assume a horizontal state. 5) The lower folding back panel 907 is perpendicular to the lower folding side panel 904 after being flipped outward 90°; 6) The middle folding back panel 906 is flipped outward 90° and then becomes perpendicular to the middle folding side panel 903; 7) The upper folding back panel 905 is perpendicular to the upper folding side panel 902 after being flipped outward 90°;

[0054] Step 4: Installing the support legs. The four corners of the bottom surface of the base plate 500 are provided with grooves that match the support legs. The support legs 600 can be directly placed vertically in the grooves, and then adjusted to the appropriate height and locked, so that the bottom ends of the support legs are stably supported on the ground.

[0055] Through the above four steps, the operation of expanding the lifting and folding assembly 900 (space expanding assembly) can be realized, and through the reverse operation, the operation of storing the lifting and folding assembly 900 can be realized. Example 5, as shown in Figs. 18 to 21, has a hinge inversion type structure.

[0056] The space expansion assembly is designed into a hinge reversal assembly 910, which is reversibly connected to the assembly positioning plate 105 via a hinge, and in the folded state, the two assembly positioning plates 105 are vertically symmetrically arranged and approximately parallel to the rear door 101 of the vehicle compartment.

[0057] Specifically, the hinged inverted assembly 910 includes an inverted side plate assembly, an inverted back plate assembly, and an inverted bottom plate 917. The inverted side plate assembly includes a main positioning plate 911 and a lower inverted side plate 912. The inner side of the main positioning plate 911 is hinged to the assembly positioning plate 105. A side intermediate transition plate 913 is hinged between the main positioning plate 911 and the lower inverted side plate 912. The three adjacent two sides are integrally connected via a 90° hinge member. The inverted back plate assembly includes a rear upper inverted plate 914 and a rear lower inverted plate 915. The rear upper inverted plate 914 is hinged to the outer vertical edge of the main positioning plate 911, the rear lower inverted plate 915 is hinged to the outer vertical edge of the lower inverted side plate 912, the rear middle transition plate 916 is hinged to the bottom edge of the rear upper inverted plate 914, and the inverted bottom plate 917 is hinged to the bottom edge of the rear lower inverted plate 915, so that the widths of the rear middle transition plate 916 and the side middle transition plate 913 are the same, and the total thickness of the main positioning plate 911, lower inverted side plate 912, rear upper inverted plate 914, rear lower inverted plate 915 and inverted bottom plate 917 after being folded corresponds to that of the side middle transition plate 913. The use process of this embodiment is as follows: Step 1, open the back door 101 of the vehicle.

[0058] Step 2: The two symmetrical hinge inversion assemblies 910 rotate outward by 90° to spread outward, and under the initial state, the hinge inversion assemblies 910 are folded and positioned at the rear of the vehicle cabin; Step 3, unfolding the hinge inversion assembly 910, mainly includes the following steps:

[0059] 1) The lower inverted side plate 912 and the side intermediate transition plate 913 are synchronously inverted downward by 90°, and the side intermediate transition plate 913 assumes a vertical state, and then the lower inverted side plate 912 continues to be inverted downward by 90°, and the lower inverted side plate 912 assumes a vertical state;

[0060] 2) The rear upper inverting plate 914 rotates outward by 90° or 270° to be perpendicular to the main positioning plate 911, and inverts the rear intermediate transition plate 916 at the bottom by 90° downward, which becomes perpendicular to the side intermediate transition plate 913 after inversion; 3) The rear lower inversion plate 915 is inverted 90° outward and then becomes perpendicular to the lower inversion side plate 912, 4) The inverted bottom plate 917 is inverted downward by 90° to assume a horizontal state. Step 4, the hinge inversion assembly 910 on the other side is operated synchronously to complete the spreading operation.

[0061] Through the above four steps, the operation of expanding the hinge inversion assembly 910 (space expansion assembly) can be realized, and through the reverse operation, the operation of storing the hinge inversion assembly 910 can be realized. The specific folding and reversing manner can be adjusted according to actual needs, and is not limited to the above single embodiment. Example 6, as shown in Figs. 22-24, is a roof folding and expanding structure.

[0062] The space expansion assembly is designed as a roof folding expansion assembly 920, which includes an upper assembly 921 and a lower assembly 922. The upper assembly 921 includes an upper plate and an upper back plate which are hinged, and the left side of the upper plate is hinged to the rear door 101 of the vehicle cabin. The lower assembly 922 includes three plates, which are a lower plate, a lower back plate and a bottom plate, and the corresponding sides of the three plates are hinged together according to the inversion position when opened. The lower plate and the upper plate are either hinged together or connected so as to be freely removed. They are in a stacked state when not unfolded, and become a housing structure after unfolding.

[0063] Referring to other embodiments, the use process of this embodiment can be briefly described as first opening the rear door 101 of the vehicle compartment, then inverting the upper assembly 921 to become vertical, and then the lower assembly 922 subsequently inverts or extends to become vertical and is positioned below the upper assembly 921, and finally, through the hinge connection relationship, the upper back plate, the lower back plate and the bottom plate are sequentially inverted to a predetermined position, and after being completely expanded, they become a housing structure, and the opening side of the housing structure faces the passenger compartment of the automobile body 100 and communicates with the internal space of the passenger compartment, and finally, an auxiliary positioning member is used to position and lock the relative plates.

[0064] Through the above steps, the roof folding and expanding assembly 920 (space expanding assembly) can be expanded, and through the reverse operation, the roof folding and expanding assembly 920 can be stored. Example 7, as shown in FIG. 25, is a Z-shaped roof folding structure.

[0065] Specifically, in this embodiment, the space expansion assembly is designed as a roof folding Z-shaped assembly 930, which includes an upper folding assembly 931, a lower folding assembly 932 and a linear bottom plate 933. The upper folding assembly 931 includes an upper plate and an upper back plate which are reversibly connected, and the left side of the upper plate is hinged to the rear door 101 of the vehicle cabin. The lower folding assembly 932 includes a lower plate and a lower back plate which are integrally hinged, and the left and right sides of the two symmetrical lower plates are connected to the linear bottom plate 933. The three plates are integrally hinged at corresponding sides according to the reversal position when opened, and the lower plate and the upper plate are integrally hinged at one edge adjacent to each other. They are in a stacked state when not unfolded, and become a Z-shape during the unfolding process, and become a housing structure after being fully unfolded.

[0066] The use process of this embodiment can be briefly described as follows: first, open the rear door 101 of the vehicle cabin; then pull the linear bottom plate 933 downward to drive the lower folding assembly 932 and the upper folding assembly 931 to spread downward; after spreading to a vertical position, the upper and lower plates are vertical and perpendicular to the linear bottom plate 933; the upper and lower back plates which are hinged and folded are flipped clockwise or counterclockwise to spread to the corresponding positions perpendicular to the upper and lower plates; after being fully spread, they become a housing structure, and the opening side of the housing structure faces the cabin of the automobile body 100 and communicates with the internal space of the cabin; and finally, use an auxiliary positioning member to position and lock the relative plates.

[0067] Through the above steps, the Z-shaped roof folding assembly 930 (space expanding assembly) can be expanded, and through the reverse operation, the Z-shaped roof folding assembly 930 can be stored.

[0068] Specifically, in Examples 6 and 7, the vehicle is connected to the rear door 101 of the vehicle compartment via a hinge, does not occupy space inside the vehicle, has little impact on the passenger storage function of the vehicle compartment, and is more convenient for modification work on the conventional automobile structure.

[0069] In the eighth embodiment, as shown in Figs. 26-28, the space expansion assembly is designed as a sliding inverted assembly 940, and includes an inverted drive assembly 941, an inverted expansion assembly 942 and a support roller 943, one end of the inverted drive assembly 941 is connected to both the left and right sides of the rear of the passenger compartment of the automobile body 100, the other end of the inverted drive assembly 941 is hinged to the side wall of the inverted expansion assembly 942, and the support roller 943 is attached to the rear of the passenger compartment of the automobile body 100 and is located below the inverted expansion assembly 942;

[0070] When the rear door 101 of the vehicle cabin is opened, the inverted drive assembly 941 is activated to open and drive the inverted extension assembly 942 to slide backward and invert to become vertical, and the folded plates of the inverted extension assembly 942 open sequentially to form a housing structure.

[0071] Specifically, the inverted drive assembly 941 uses multiple hydraulic cylinders to form an interlocking robot arm, and the movable end of the robot arm is always hinged to the bottom of the side wall of the inverted extension assembly 942. The arm length after the robot arm is extended is sufficient for the inverted extension assembly 942 to slide outward and invert, and the height and width of the inverted extension assembly 942 are consistent with the space of the passenger compartment of the automobile body 100 to avoid interference problems. When stored, the inverted extension assembly 942 is in a lying flat state and maintains a square housing structure, and the bottom plate is folded inward and tightly attached to the inside of the left and right side plates (when the bottom plate is opened, 9, the inverted extension assembly 942 includes a second main side panel 944, an extended side panel 945, a main back panel 946 connected vertically to the side panel, and an extended back panel 947, which are arranged symmetrically. The extended side panel 945 and the second main side panel 944 are stacked together through a tension assembly or a flexible connecting member, and the extended back panel 947 and the main back panel 946 are folded together through a tension assembly or a flexible connecting member. When unfolding, they are pushed up directly or inverted. After being fully unfolded, the side panels, back panel and bottom panel are perpendicular to each other, forming an enclosed housing structure and realizing the expansion of the interior space of the vehicle.

[0072] When it is necessary to store it, first, the extended side panel 945 and the extended back panel 947 are inverted or pushed inward, and then returned to the stacked state, and then the linked robot arm formed by the hydraulic cylinder is contracted and returned, tilting the inverted extension assembly 942 in the stacked state and sliding it upward to drive it, and after the robot arm is fully returned, the inverted extension assembly 942 is driven to its initial lying flat state, and finally, the rear door 101 of the passenger compartment is closed to return the car to its original state.

[0073] In this embodiment, in addition to the above main components, other locking and positioning components are arranged to ensure the stability of the sliding inversion assembly 940 during the running process of the vehicle.

[0074] Specifically, in all the above embodiments, the hinged connection members are preferably made of flexible connecting member 908, and the flexible connecting member 908 is specifically made of a combination of outdoor tent fabric, waterproof cloth, tape or zipper, etc., and is preferably made of outdoor tent fabric with waterproof function. When connecting, specifically, the two boards are covered with an appropriately cut connecting cloth to increase the overlapping area so as to ensure the strength of the connection, and an appropriate inversion gap is reserved on both opposing sides of the two boards to ensure a completely sealed state when opened and a folding margin when closed.

[0075] In addition, a combination structure of a hinge structure and a flexible connection member on one side may be adopted between two inverted or folded plates to ensure connection strength and airtightness.

[0076] The plate material constituting the space expansion assembly may specifically adopt an aluminum-plastic composite panel with a thickness of 2mm to 3mm, which is light in weight, has high strength, and can better meet the requirements of use.

[0077] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another and do not necessarily require or imply an actual relationship or order between those entities or operations. Furthermore, "comprise," "contain," or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or device comprising a set of elements includes not only those elements but also other elements not expressly recited or inherent in such process, method, article, or device.

[0078] The above examples are merely illustrative of preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modifications or improvements made by those skilled in the art to the technical solutions of the present invention, provided that they do not deviate from the design spirit of the present invention, shall be included in the scope of protection defined by the claims of the present invention. [Explanation of symbols]

[0079] 100, automobile body; 101, rear door of the vehicle interior; 102, telescopic rod; 103, bottom connection plate; 104, upper positioning plate; 105, assembly positioning plate; 200, slide rail connection assembly, 201, side guide chute, 202, side slide rail, 300, side plate assembly; 301, main side plate; 302, upper plate; 303, lower plate; 400, back plate assembly, 401, main back plate, 402, upper back plate, 403, lower back plate, 404, first rotating connection member, 405, second rotating connection member, 500, bottom plate; 501, third rotating connection member; 600, support leg; 700, guide slide positioning plate; 701, roller; 800, lifting guide slide assembly; 801, upper guide chute; 802, upper guide slide plate; 900, lifting and folding assembly, 901, upper connecting plate, 902, upper folding side plate, 903, middle folding side plate, 904, lower folding side plate, 905, upper folding back plate, 906, middle folding back plate, 907, lower folding back plate, 908, flexible connecting member, 910, hinged inversion assembly; 911, main positioning plate; 912, lower inversion side plate; 913, side intermediate transition plate; 914, rear upper inversion plate; 915, rear lower inversion plate; 916, rear intermediate transition plate; 917, inversion side plate; 920, roof folding extension assembly, 921, upper assembly, 922, lower assembly, 930, roof folding Z-shaped assembly, 931, upper folding assembly, 932, lower folding assembly, 933, one-shaped bottom plate, 940, sliding inverting assembly, 941, inverting drive assembly, 942, inverting extension assembly, 943, support roller, 944, second main side plate, 945, extension side plate, 946, main back plate, 947, extension back plate, 110, first rolling connection plate; 120, hinge pin; 130, second rolling connection plate.

Claims

1. The space expansion mechanism for an automobile comprises a space expansion assembly and a rolling connection assembly, the space expansion assembly being movably attached to the rear of the passenger compartment of the automobile body (100) via the rolling connection assembly, and in use, when a back door (101) of the passenger compartment is opened, the space expansion assembly expands rearward and downward by pulling and reversing operations to form a housing structure, and an opening side of the housing structure faces the passenger compartment of the automobile body (100) and communicates with the internal space of the passenger compartment.

2. 2. The space expansion mechanism of claim 1, wherein the space expansion assembly is slidably connected to both the left and right sides of the rear of the passenger compartment of the vehicle body (100) or to an upper part of the rear of the passenger compartment.

3. The space expansion assembly is connected to both the left and right sides of the rear of the passenger compartment of the automobile body (100) through a slide rail connection assembly (200) or a guide sliding positioning plate (700), the slide rail connection assembly (200) includes a side guide chute (201) and a side slide rail (202), the slide rail (202) is slidably connected to the side guide chute (201), the side guide chute (201) is attached to both the left and right sides of the rear of the passenger compartment of the automobile body (100), the side slide rail (202) is connected to the space expansion assembly, the guide sliding positioning plate (700) is attached to both the left and right sides of the rear of the passenger compartment of the automobile body (100), and the space expansion assembly is slidably connected within the chute of the guide sliding positioning plate (700).

4. The space expansion assembly includes three parts, a side plate assembly (300), a back plate assembly (400) and a bottom plate (500), which are connected to each other; The side plate assembly (300) comprises a main side plate (301), an upper side plate (302) and a lower side plate (303), the upper side plate (302) and the lower side plate (303) are connected to both ends of the main side plate (301) in an extensible manner, and the side slide rail (202) is connected to the outer surface of the main side plate (301); The back plate assembly (400) comprises an upper back plate (402), a main back plate (401) and a lower back plate (403) arranged from top to bottom, the main back plate (401), the upper back plate (402) and the lower back plate (403) being reversibly connected to the outer edges of the main side plate (301), the upper side plate (302) and the lower side plate (303), respectively; 4. The space expansion mechanism of claim 3, wherein the bottom plate (500) is connected to the bottom side of the lower plate (303).

5. The space expansion mechanism of the automobile according to claim 4, characterized in that the bottom plate (500) adopts a single plate structure or a symmetrical double plate structure, and in the case of a single plate structure, both ends of the bottom plate (500) are connected to the bottom edges of the two lower plates (303) via screws, and in the case of a double plate structure, the bottom plate (500) is reversibly connected to the bottom edges of the lower plates (303) via a third rotating connecting member (501).

6. The space expansion mechanism of the automobile according to claim 4, characterized in that: the main back panel (401) is hinged to the outer edge of the main side panel (301) through a second rotating connecting member (405), the upper back panel (402) and the lower back panel (403) are both connected to the outer edges of the upper panel (302) and the lower panel (303) through a first rotating connecting member (404), the upper back panel (402) and the lower back panel (403) are folded together adjacent to the upper panel (302) and the lower panel (303) after being inverted, the main back panel (401) is parallel to the main side panel (301) after being inverted, and a storage gap is disposed in the middle, and the thickness of the storage gap is equal to the thickness of the upper panel (302), the lower panel (303), the upper back panel (402) and the lower back panel (403) after being folded.

7. The space expansion mechanism for an automobile according to claim 6, characterized in that a clearance step is provided on the inner surfaces of both upper and lower ends of the main side plate (301), the depth of the clearance step is equal to or greater than the height of the upper plate (302) and the lower plate (303), and the height of the upper back plate (402) and the lower back plate (403) is equal to or less than the maximum height of the upper plate (302) and the lower plate (303).

8. The space expansion mechanism of the automobile according to claim 2, characterized in that the space expansion assembly is connected to the upper part of the rear part of the passenger compartment of the automobile body (100) through a lifting guide sliding assembly (800), the lifting guide sliding assembly (800) includes an upper guide chute (801) and an upper guide sliding plate (802) which are slidably connected together, the upper guide chute (801) is attached to the upper part of the rear part of the passenger compartment of the automobile body (100), and the upper guide sliding plate (802) is attached to the space expansion assembly.

9. The space expansion mechanism of the automobile according to claim 8, characterized in that, during lifting, the space expansion assembly is installed on a lifting and folding assembly (900), the lifting and folding assembly (900) includes an upper connecting plate (901), a folding side plate assembly and a folding back plate assembly, the upper surface of the upper connecting plate (901) is slidably connected to the upper guide chute (801) through the upper guide sliding plate (802), two groups of the folding side plate assemblies are symmetrically arranged and connected to the left and right edges of the upper connecting plate (901), and the folding back plate assembly is reversibly connected to the folding side plate assembly.

10. The folding side panel assembly comprises an upper folding side panel (902), an intermediate folding side panel (903) and a lower folding side panel (904) which are folded in sequence, one side edge of the upper folding side panel (902) is connected to a side edge of the upper connecting panel (901), and the mutually connected edges of the upper folding side panel (902), the intermediate folding side panel (903) and the lower folding side panel (904) are integrally connected via a 180° hinge structure or a flexible connecting member (908); The folding back panel assembly comprises an upper folding back panel (905), a middle folding back panel (906) and a lower folding back panel (907), the upper folding back panel (905), the middle folding back panel (906) and the lower folding back panel (907) being connected to the outer edges of the upper folding side panel (902), the middle folding side panel (903) and the lower folding side panel (904) respectively via 90° hinge structures or flexible connecting members (908); The space expansion mechanism of the automobile according to claim 9, further comprising a bottom plate (500), the bottom plate (500) adopting a double-plate structure, and the bottom plate (500) being reversibly connected to the bottom edge of the lower folding side plate (904) via a 90° hinge structure or a flexible connecting member (908).

11. The space expansion assembly is designed as a hinged inversion assembly (910), and the hinged inversion assembly (910) is reversibly connected to the self-adapting positioning structure through a hinge, and the hinged inversion assembly (910) includes an inverted side plate assembly, an inverted back plate assembly and an inverted bottom plate (917), and the inverted side plate assembly includes a main positioning plate (911) and a lower inverted side plate (912), and the inner edge of the main positioning plate (911) is hingedly connected to the self-adapting positioning structure, and a side intermediate transition plate (913) is hingedly connected between the main positioning plate (911) and the lower inverted side plate (912), and the two adjacent edges of the three are integrally connected through a 90° hinge member; The inverted back plate assembly includes a rear upper inverted plate (914) and a rear lower inverted plate (915), the rear upper inverted plate (914) is hinged to the outer vertical side of the main positioning plate (911), the rear lower inverted plate (915) is hinged to the outer vertical side of the lower inverted side plate (912), a rear intermediate transition plate (916) is hinged to the bottom side of the rear upper inverted plate (914), and the inverted bottom plate (917) is hinged to the bottom side of the rear lower inverted plate (915).The space expansion mechanism of an automobile as described in claim 2, characterized in that the inverted back plate assembly includes a rear upper inverted plate (914) and a rear lower inverted plate (915), the rear upper inverted plate (914) is hinged to the outer vertical side of the main positioning plate (911), the rear lower inverted plate (915) is hinged to the outer vertical side of the lower inverted side plate (912), a rear intermediate transition plate (916) is hinged to the bottom side of the rear upper inverted plate (914), and the inverted bottom plate (917) is hinged to the bottom side of the rear lower inverted plate (915).

12. 12. The space expansion mechanism of claim 11, wherein the self-adaptation positioning structure includes a telescopic rod (102), a bottom of the telescopic rod (102) is positioned and connected to the bottom of the passenger compartment through a bottom connecting plate (103), a positioning hole of the bottom connecting plate (103) overlaps with a positioning hole of the passenger compartment seat, an upper positioning plate (104) is connected to the upper part of the telescopic rod (102), a self-adaptation block is connected to the upper surface of the upper positioning plate (104), the self-adaptation block is made of a flexible material, an assembly positioning plate (105) is connected to the outer side of the telescopic rod (102), the assembly positioning plate (105) is provided with a plurality of positioning holes, and the inner edge of the main positioning plate (911) is hingedly connected to the assembly positioning plate (105).

13. 3. The space expansion mechanism of claim 2, wherein the space expansion assembly is designed as a roof folding expansion assembly (920), the roof folding expansion assembly (920) includes an upper assembly (921) and a lower assembly (922), the upper assembly (921) includes an upper plate and an upper back plate which are integrally hinged, the left side of the upper plate is hinged to the rear door (101) of the vehicle cabin, the lower assembly (922) includes a lower plate, a lower back plate and a bottom plate, the corresponding sides of the three plates are integrally hinged according to the inversion position when opened, the lower plate and the upper plate are integrally hinged or connected so as to be removable, and are in a stacked state when not unfolded, and become a housing structure after unfolding.

14. The space expansion assembly is designed as a roof folding Z-shaped assembly (930), which includes an upper folding assembly (931), a lower folding assembly (932) and a one-shaped bottom plate (933). The upper folding assembly (931) includes an upper plate and an upper back plate which are integrally hinged, and the left side edge of the upper plate is hinged to the back door (101) of the vehicle cabin. The lower folding assembly (932) is an integral The space expansion mechanism of the automobile according to claim 2, characterized in that the space expansion mechanism includes a lower plate and a lower back plate which are integrally hinged to each other, the left and right sides of the two symmetrical lower plates are connected to the one-shaped bottom plate (933), the corresponding sides of the three plates are integrally hinged to each other according to the inversion position when the three plates are opened, and one edge of the lower plate and the upper plate adjacent to each other are integrally hinged to each other, and are in a stacked state when not unfolded, and have a Z-shape during the unfolding process, and become a housing structure after being completely unfolded.

15. The space expansion assembly is designed as a sliding inverted assembly (940), and includes an inverted drive assembly (941), an inverted expansion assembly (942) and a support roller (943), one end of the inverted drive assembly (941) is connected to both the left and right sides of the rear of the vehicle cabin of the vehicle body (100), the other end of the inverted drive assembly (941) is hinged to the side wall of the inverted expansion assembly (942), and the support roller (943) is attached to the rear of the vehicle cabin of the vehicle body (100) and is located below the inverted expansion assembly (942); The space expansion mechanism of an automobile according to claim 1, characterized in that, when the back door (101) of the vehicle cabin is opened, the inverted drive assembly (941) is activated to expand, driving the inverted extension assembly (942) to slide backward and invert to vertical, and the plates folded on the inverted extension assembly (942) are sequentially expanded to form a housing structure.

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