Mobile home, cabin, and cabin manufacturing method

Abstract

According to the present invention, in order to configure a cabin (10) used in a mobile home (1) or the like suitably for recycling, a roof portion (13) and outer wall portions (17) of the cabin (10) are configured without using a frame by using a plurality of resin panels (50) for the roof portion (13) and the outer wall portions (17) in the cabin (10), and bonding together neighboring resin panels (50). The resin panels (50) are manufactured via a 3D printer, and have cavity forming parts partitioned by a plurality of cavities on the interiors thereof. Accordingly, the cabin (10) excels in thermal insulation and soundproofing, and is lightweight. Moreover, the whole of the roof portion (13) and the outer wall portions (17) may be integrally produced in resin-panel form using the 3D printer.

Description

Mobile house, cabin, and method for manufacturing a cabin

[0001] The present invention relates to a mobile house, a cabin, and a method for manufacturing a cabin.

[0002] In a mobile house such as a trailer house, a cabin whose interior is a living space is mounted on the loading platform of a chassis equipped with tires. Since the mobile house can be moved by a towing vehicle, after moving to a destination such as a resort by the towing vehicle, if the chassis is removed from the towing vehicle, it can be used for living at the destination. Note that a mobile house may be referred to as a trailer house, a camping trailer, a mobile cabin, etc., but in this specification, it is referred to as a mobile house including a trailer house, a camping trailer, and a mobile cabin.

[0003] In Patent Document 1, as a cabin for a mobile house, a frame is constituted by column members made of a laminated body of wood and cross members made of a laminated body of wood that connect the column members, and a cabin in which an outer wall member and a roof member are fixed to the frame is proposed.

[0004] Japanese Unexamined Patent Application Publication No. 2023-75553

[0005] The mobile house described in Patent Document 1 uses column members made of wood. In addition, a steel plate, roofing, a floor board, etc. are used for the roof part, and a facade rattan using natural wood is used for the outer wall part. Therefore, the mobile house described in Patent Document 1 has a problem that it is difficult to recycle.

[0006] The present invention has been made in view of the above circumstances, and an object thereof is to provide a mobile house, a cabin, and a method for manufacturing a cabin suitable for recycling.

[0007] [1] The mobile house according to the present invention comprises a chassis with tires on the underside of a cargo bed, and a cabin mounted on the chassis, the interior of which serves as a living space, wherein the cabin comprises a plurality of resin panels, and the plurality of resin panels are joined together to form at least the roof portion and the exterior wall portion of the cabin.

[0008] [2] In the mobile house according to the present invention, the resin panel preferably comprises a first plate portion, a second plate portion located at least a part of which faces the first plate portion, and a cavity forming portion which forms a plurality of cavities between the first plate portion and the second plate portion.

[0009] [3] In the mobile house according to the present invention, it is preferable that the cavity forming portion includes a plate-shaped wall portion that divides the space between the first plate portion and the second plate portion into the plurality of cavities.

[0010] [4] In the mobile house according to the present invention, it is preferable that, of the adjacent resin panels, one resin panel has a first plate-shaped end in which the thickness of the plate is reduced by cutting out from the inner side, and the other resin panel has a second plate-shaped end in which the thickness of the plate is reduced by cutting out from the outer side, and the adjacent resin panels are joined together in such a state that the first plate-shaped end and the second plate-shaped end overlap in the thickness direction.

[0011] [5] In the mobile house according to the present invention, it is preferable that, among the adjacent resin panels, the end of one resin panel has a first protrusion that protrudes in a direction intersecting the thickness direction, and the end of the other resin panel has a first recess into which the first protrusion fits, and the adjacent resin panels are joined together with the first protrusion fitted into the first recess.

[0012] [6] In the mobile house according to the present invention, it is preferable that a plate-shaped connecting member is provided on both adjacent resin panels, overlapping from one side in the thickness direction and joined to both adjacent resin panels, and that the adjacent resin panels are joined to each other via the connecting member.

[0013] [7] In the mobile house according to the present invention, it is preferable that the plurality of resin panels include a resin panel that overlaps both adjacent resin panels from one side in the thickness direction as the connecting member.

[0014] [8] In the mobile house according to the present invention, it is preferable that one of the adjacent resin panels and the connecting member has a plurality of second protrusions on the side facing the other member, and the other member has a plurality of second recesses on the side facing the one member, into which each of the plurality of second protrusions fits, and the adjacent resin panels are connected to each other via the connecting member with each of the plurality of second protrusions fitted into the plurality of second recesses.

[0015] [9] In the mobile house according to the present invention, a positioning member having a stepped first positioning portion and a stepped second positioning portion is provided, and when two directions intersecting each other are designated as the first direction and the second direction, the plurality of panels include a plurality of first resin panels laminated along the first direction such that their ends form a stepped first step portion, and a plurality of second resin panels laminated along the second direction such that their ends form a stepped second step portion, and it is preferable that the plurality of first resin panels and the plurality of second resin panels are connected to the positioning member with the first step portion positioned in the first positioning portion and the second step portion positioned in the second positioning portion.

[0016]

[10] In the mobile house according to the present invention, it is preferable that, among the adjacent resin panels, one resin panel is bonded to the other resin panel such that one of the first plate portion and the second plate portion partially overlaps the cavity forming portion of the other resin panel in the thickness direction.

[0017]

[11] In the mobile house according to the present invention, it is preferable that at least one of the first plate portion and the second plate portion has a thickened portion that protrudes toward the other plate portion.

[0018]

[12] In the mobile house according to the present invention, it is preferable to provide a joint member that connects adjacent resin panels.

[0019]

[13] In the mobile house according to the present invention, it is preferable that the connecting member is connected to both adjacent resin panels by press-fitting each of the plurality of second protrusions into the plurality of second recesses.

[0020]

[14] In the mobile house according to the present invention, it is preferable that the plurality of resin panels include any of the following: a resin panel with a shape that is curved in the out-of-plane direction, a resin panel with a shape that is curved in the out-of-plane direction, and a resin panel with a shape that is bent in the out-of-plane direction.

[0021]

[15] The present invention relates to a cabin in a mobile house whose interior is used as a living space, comprising a plurality of resin panels, wherein adjacent resin panels are joined together to constitute at least the roof portion and the exterior wall portion of the cabin.

[0022]

[16] In a cabin for a mobile house according to the present invention, the resin panel preferably comprises a first plate portion, a second plate portion located at least a part of which faces the first plate portion, and a cavity forming portion which forms a plurality of cavities between the first plate portion and the second plate portion.

[0023]

[17] The present invention is characterized in that it is a method for manufacturing a cabin for use in a mobile house, and includes a step of manufacturing the resin panel using a 3D printer.

[0024]

[18] The mobile house according to the present invention comprises a chassis with tires on the underside of a cargo bed, and a cabin mounted on the chassis, the interior of which serves as a living space, and is characterized in that at least the roof portion and the exterior wall portion of the cabin are integrally formed in the form of resin panels.

[0025]

[19] In the mobile house according to the present invention, it is preferable that at least the roof portion and the exterior wall portion of the cabin are integrally constructed in the form of a resin panel comprising a first plate portion, a second plate portion located opposite the first plate portion, and a cavity forming portion that forms a plurality of cavities between the first plate portion and the second plate portion.

[0026]

[20] The cabin according to the present invention is characterized in that at least the roof portion and the exterior wall portion of the living space are integrally constructed in the form of a resin panel comprising a first plate portion, a second plate portion located opposite the first plate portion, and a cavity forming portion that forms a plurality of cavities between the first plate portion and the second plate portion.

[0027]

[21] A method for manufacturing a cabin according to the present invention is characterized by a step of integrally constructing at least the roof portion and the exterior wall portion of a living space in the form of a resin panel comprising a first plate portion, a second plate portion located opposite to the first plate portion, and a cavity forming portion that forms a plurality of cavities between the first plate portion and the second plate portion, using a 3D printer.

[0028] In the mobile house and cabin according to the present invention, the main materials for the roof and exterior walls of the cabin are multiple resin panels. Therefore, according to the present invention, it is possible to provide a mobile house and cabin that are easy to recycle. Furthermore, according to the present invention, since no frame is used, the weight of the cabin and the cost can be reduced. Moreover, since resin panels are not limited to flat plates, shapes that are curved out of the plane, curved out of the plane, and bent out of the plane can be easily realized, according to the present invention, it is possible to provide a mobile house and cabin with a high level of design appeal.

[0029] In another embodiment of the present invention, the roof and exterior walls of the cabin are integrally constructed as resin panels using a 3D printer. Therefore, according to the present invention, a cabin that is easy to recycle can be provided. Furthermore, according to the present invention, the cabin can be made lighter and costs can be reduced because no frame is used. Moreover, since the structure is integrally constructed as resin panels using a 3D printer, not only flat shapes but also shapes that are curved out of the plane, curved out of the plane, and bent out of the plane can be easily realized, so according to the present invention, a cabin with a high level of design can be provided.

[0030] Figure 1 is a perspective view of a mobile house according to Embodiment 1 of the present invention, viewed from the front and diagonally above. Figure 1 is a perspective view of the mobile house shown in Figure 1, viewed from the rear and diagonally above. Figure 1 is a perspective view of the cabin shown in Figure 1, viewed from the front and diagonally above. Figure 1 is a perspective view of the cabin shown in Figure 1, viewed from the rear and diagonally above. Figure 3 is an explanatory diagram of a resin panel. Figure 5 is an explanatory diagram showing a method for manufacturing the resin panel shown in Figure 5. Figure 3 is an explanatory diagram of a curved resin panel among the resin panels shown in Figure 3. Figure 1 is an explanatory diagram showing the bonding structure between resin panels in the cabin shown in Figure 1. Figure 1 is an explanatory diagram showing another bonding structure between resin panels in the cabin shown in Figure 1. Figure 1 is an explanatory diagram of a mobile house according to Modification 1 of Embodiment 1 of the present invention. Figure 2 is an explanatory diagram of a mobile house according to Modification 3 of Embodiment 1 of the present invention. Figure 4 is an explanatory diagram of a mobile house according to Modification 5 of Embodiment 1 of the present invention. Figure 6 is an explanatory diagram of a mobile house according to Modification 6 of Embodiment 1 of the present invention. Figure 1 is an explanatory diagram of a mobile house according to Improved Example 1 of Embodiment 1 of the present invention. Figure 2 is an explanatory diagram of a mobile house according to Improved Example 2 of Embodiment 1 of the present invention. Figure 2 is an explanatory diagram of a mobile house according to Embodiment 2 of the present invention. An explanatory diagram of the resin panel used in the body of the cabin shown in Figure 18. An explanatory diagram of a mobile house according to Embodiment 3 of the present invention.

[0031] Based on the drawings, a mobile house 1, a cabin 10, and a method for manufacturing the cabin 10 according to an embodiment of the present invention will be described. Note that each drawing is a schematic diagram and does not necessarily strictly reflect the actual dimensions and shape.

[0032] [Embodiment 1] (Overall Configuration) Figure 1 is a perspective view of the mobile house 1 according to Embodiment 1 of the present invention, viewed from the front and diagonally above. Figure 2 is a perspective view of the mobile house 1 shown in Figure 1, viewed from the rear and diagonally above.

[0033] In the following description, when describing the mobile house 1 and cabin 10, the side where the towing vehicle and coupling part 34 are located will be referred to as the "front side," and the side opposite to the side where the towing vehicle and coupling part 34 are located will be referred to as the "rear side." Also, in the following description, the exterior wall portion 17 means the portion that includes at least the right side 14 and the left side 15 and constitutes the exterior wall surrounding the living space.

[0034] As shown in Figures 1 and 2, the mobile house 1 according to Embodiment 1 comprises a cabin 10 whose interior serves as a living space, and a chassis 30 having tires 32 beneath a cargo bed 31 on which the cabin 10 is mounted. Inside the cabin 10, equipment such as a kitchen and a bed are arranged. Two tires 32 are provided on each side of the cargo bed 31, approximately in the center of the front-to-rear direction.

[0035] The chassis 30 and the cabin 10 are fixed together by locking mechanisms at four points: front, rear, left, and right. For example, four convex container locks 35, sometimes called twist locks, are provided at the front, rear, left, and right ends of the cargo bed 31, and recesses are provided on the bottom surface of the cabin 10 into which the container locks 35 fit. Between the chassis 30 and the cabin 10, spacers 36 are positioned at a total of four locations (front, rear, left, and right) near the center in the front-to-back direction.

[0036] The front end of the chassis 30 is provided with a coupling portion 34 for connecting to a towing vehicle (not shown) and a trailer jack 33. The coupling portion 34 is, for example, a coupler that connects to a hitch ball provided on the towing vehicle. Therefore, the user can transport the mobile house 1 to its destination by towing vehicle, and after transport, the mobile house 1 can be detached from the towing vehicle. At that time, the user adjusts the posture of the mobile house 1 using the trailer jack 33 and a stand jack (not shown).

[0037] In Embodiment 1, the cabin 10 has an isosceles triangle front 11 and a vertically elongated rectangle rear 12. An isosceles triangular opening 110 is provided in the outer wall portion 17 of the front 11. A triangular window pane 22 is fixed in the opening 110 via a window frame 21. A vertically elongated rectangular opening 120 is provided in the outer wall portion 17 of the rear 12. A door 41 is provided in the opening 120 via a hinge 42. Openings may also be provided in the outer wall portions 17 of the left side 15 and the right side 14, and window panes 22 may be placed therein.

[0038] The top of the front surface 11 is connected to each of the ends of the upper edge of the rear surface 12 by a straight boundary line. Therefore, the roof portion 13 of the cabin 10 is triangular. Each of the ends of the bottom edge of the front surface 11 is connected to each of the ends of the lower edge of the rear surface 12 by a straight boundary line. Therefore, the floor portion 16 of the cabin 10 is a rectangle with its longer side extending in the front-to-back direction. The right side 14 and left side 15 of the cabin 10 are generally rectangles with their longer sides extending in the front-to-back direction. However, the right side 14 and left side 15 are not strictly planar, but have a shape that is slightly curved out of plane.

[0039] (Configuration of Cabin 10) Figure 3 is a perspective view of the cabin 10 shown in Figure 1, viewed from the front and diagonally above. Figure 4 is a perspective view of the cabin 10 shown in Figure 1, viewed from the rear and diagonally above. In Figures 3 and 4, the boundary between adjacent resin panels 50 is indicated by a dashed line L0.

[0040] As shown in Figures 3 and 4, the cabin 10 is equipped with a plurality of resin panels 50 in at least the roof portion 13 and the exterior wall portion 17. The plurality of resin panels 50 are joined together by adjacent resin panels 50, and thus constitute at least the roof portion 13 and the exterior wall portion 17 of the cabin 10 without being fixed to the frame.

[0041] In Embodiment 1, multiple resin panels 50 are arranged on the floor portion 16 of the cabin 10, similar to the roof portion 13 and the exterior wall portion 17. On the floor portion 16, adjacent resin panels 50 are joined together.

[0042] The cabin 10 has, for example, a length of 6500 mm from front to back, a height of 2800 mm, and a maximum width of 2400 mm. The resin panel 50 has a maximum length of 1150 mm. Therefore, Figures 3 and 4 illustrate the case in which 12 resin panels 50 are used on the roof section 13, 6 resin panels 50 are used on the front 11, 6 resin panels 50 are used on the rear 12, 18 resin panels 50 are used on the left side 15, and 18 resin panels 50 are used on the right side 14.

[0043] The plurality of resin panels 50 all have the same basic structure and material, but include a plurality of types of resin panels 50 with different planar shapes. Further, flat resin panels 50 are used for the front surface 11, the rear surface 12, the roof portion 13, and the floor portion 16, and resin panels 50 with a shape warped in the out-of-plane direction are used for the right side surface 14 and the left side surface 15.

[0044] (Detailed Configuration of Resin Panel 50) FIG. 5 is an explanatory view of the resin panel 50 shown in FIG. 3. In FIG. 5 and FIGS. 6 and 7 described later, three mutually intersecting directions are shown as the X direction, the Y direction, and the Z direction. The X direction is the thickness direction of the resin panel 50. The Y direction is the upward direction when the resin panel 50 is manufactured by a 3D printer. The Z direction is the lateral direction when the resin panel 50 is manufactured by a 3D printer.

[0045] As shown in FIG. 5, the resin panel 50 includes a first plate portion 51, a second plate portion 52 located at a position facing the first plate portion 51 in the X direction, and a cavity forming portion 57 that forms a plurality of cavities 570 between the first plate portion 51 and the second plate portion 52. Therefore, the resin panel 50 has heat insulation and sound insulation properties. The resin panel 50 is more excellent in heat insulation and sound insulation as the ratio of the cavities 570 is higher. Further, even when the ratio of the cavities 570 is the same, the strength of the resin panel 50 is higher as a larger number of small cavities 570 are uniformly distributed.

[0046] FIG. 5 illustrates a form in which the entire second plate portion 52 is located at a position facing the first plate portion 51 in the X direction. Further, FIG. 5 shows a form in which the resin panel 50 includes side plate portions 56 that connect the first plate portion 51 and the second plate portion 52 at both ends in the direction along the Z direction, and the cavity forming portion 57 is not exposed at the ends in the Z direction. Although not shown, the resin panel 50 shown in FIG. 5 also includes side plate portions 56 at both ends in the direction along the Y direction. However, the side plate portions 56 may be provided only at a part of the ends of the resin panel 50. Further, the resin panel 50 may be in a form in which the side plate portions 56 are not provided at all the ends. The cavity forming portion 57 is exposed at the ends of the resin panel 50 where the side plate portions 56 are not provided.

[0047] The plate thickness t50 of the resin panel 50 is, for example, 60 mm to 200 mm. The plate thickness t51 of the first plate portion 51 is, for example, 5 mm to 30 mm. The plate thickness t52 of the second plate portion 52 is, for example, 5 mm to 20 mm. The thickness t57 of the cavity forming portion 57 is, for example, 50 mm to 150 mm. The thickness t57 of the cavity forming portion 57 is 50% or more of the plate thickness t50 of the resin panel 50. In the cavity forming portion 57, the cavity 570 occupies 50% to 80% by volume. Therefore, the resin panel 50 is excellent in heat insulation and sound insulation.

[0048] In Embodiment 1, the plate thickness t50 of the resin panel 50 is 100 mm. The plate thickness t51 of the first plate portion 51 is 10 mm. The plate thickness t52 of the second plate portion 52 is 5 mm. The thickness t57 of the cavity forming portion 57 is 85 mm. Therefore, the thickness t57 of the cavity forming portion 57 is 85% of the plate thickness t50 of the resin panel 50. In the cavity forming portion 57, the cavity 570 occupies about 70% by volume.

[0049] In Embodiment 1, the cavity forming portion 57 has a plate-like wall portion 53 that partitions the space between the first plate portion 51 and the second plate portion 52 into a plurality of cavities 570. The plate thickness t53 of the wall portion 53 is, for example, 1 mm to 4 mm. Therefore, the plate thickness t53 of the wall portion 53 is thinner than the plate thicknesses t51 and t52 of the first plate portion 51 and the second plate portion 52. In Embodiment 1, the plate thickness t53 of the wall portion 53 is 2 mm. The wall portion 53 is configured to function as a reinforcing rib. Therefore, even when the ratio of the cavity 570 is increased by reducing the plate thickness of the wall portion 53, the resin panel 50 has high strength.

[0050] In Embodiment 1, the wall portion 53 includes a plate-like first wall portion 54 that extends along the first plate portion 51 and the second plate portion 52 between the first plate portion 51 and the second plate portion 52, and a plate-like second wall portion 55 that partitions the spaces between the first plate portion 51 and the first wall portion 54 and between the second plate portion 52 and the first wall portion 54 into a large number of cavities 570.

[0051] Multiple rows of first wall sections 54 are provided between the first plate section 51 and the second plate section 52, and second wall sections 55 are also provided between adjacent first wall sections 54. For example, the first wall sections 54 are provided in three rows as first wall sections 541, 542, and 543, which are provided at equal intervals. Therefore, the space between the first plate section 51 and the second plate section 52 is further partitioned by numerous cavities 570. Consequently, the resin panel 50 has excellent heat insulation and sound insulation properties. In addition, the first wall sections 54 and the second wall sections 55 function effectively as reinforcing ribs. For this reason, even when the plate thickness t53 of the wall section 53 is reduced and the ratio of cavities 570 is increased, the resin panel 50 has high strength.

[0052] In this way, at least the roof portion 13 and the exterior wall portion 17 of the cabin 10 are constructed as resin panels comprising a first plate portion 51, a second plate portion 52 positioned opposite the first plate portion 51, and a cavity forming portion 57 that forms a plurality of cavities 570 between the first plate portion 51 and the second plate portion 52. When the resin panel 50 is used in the cabin 10, the first plate portion 51 is positioned to face outwards and the second plate portion 52 is positioned to face inwards. In addition, decorative panels may be attached to the second plate portion 52 of the resin panel 50 using joint members such as bolts.

[0053] (Method for Manufacturing the Resin Panel 50) Figure 6 is an explanatory diagram showing the method for manufacturing the resin panel 50 shown in Figure 5. As schematically shown in Figure 6, in the manufacturing process of the cabin 10, a 3D printer is used to manufacture the resin panel 50 by a heat-melt deposition modeling method. More specifically, the 3D printer moves one or more nozzles 100 based on data relating to the structure of the resin panel 50, and extrudes liquid resin material 500 from the nozzles 100, accumulating the liquid resin material 500 upwards (in the Y direction). When a thermoplastic resin is used as the resin material 500, the resin material 500 is extruded from the nozzles 100 in a heated and melted state, then cooled to solidify the resin material 500.

[0054] Examples of thermoplastic resins include ABS (acrylonitrile butadiene styrene copolymer), ASA (acrylate styrene acrylonitrile) polymer, PLA (Poly-Lactic Acid) polymer, PP (polypropylene) polymer, PET (polyethylene terephthalate) polymer, PMMA (polymethylmethylacetate) polymer, and PC (polycarbonate) polymer.

[0055] In Embodiment 1, a thermoplastic resin is used for the resin panel 50 from the viewpoint of ease of recycling of the cabin 10. For example, ABS resin is used for the resin panel 50. ABS resin has advantages such as excellent impact resistance, heat resistance, and chemical resistance. ASA resin may also be used for the resin panel 50. ASA resin is a thermoplastic resin in which the butadiene in ABS resin is replaced with acrylate. ASA resin has the advantage of being less prone to deterioration even when used outdoors because of its excellent weather resistance.

[0056] The "resin" used in this invention may be any resin material that can be fabricated by a fused deposition modeling (FDM) method using a 3D printer, for example, a resin material containing carbon fibers.

[0057] (Configuration of curved resin panel 50, etc.) Figure 7 is an explanatory diagram of a curved resin panel 50 among the resin panels 50 shown in Figure 3. In Embodiment 1, the plurality of resin panels 50 include a resin panel 50 that is curved in the out-of-plane direction. To make the features easier to understand, Figure 7 illustrates a resin panel 50 in which the resin panel 50 is cylindrically curved along the Y direction toward the X direction (out-of-plane direction), resulting in a cavity 570 that extends in the Y direction while curving toward the X direction.

[0058] When manufacturing such a resin panel 50 with a 3D printer, in the process shown in Figure 6, if the position from which the resin material is extruded from the nozzle 100 is gradually shifted in the X direction during the process of stacking the resin material in the Y direction, the first plate portion 51, the cavity forming portion 57, and the second plate portion 52 can be curved toward the X direction.

[0059] Furthermore, some of the resin panels 50 may have shapes that are cylindrically curved along the Z direction toward the X direction (out-of-plane direction), or shapes that are bent toward the X direction (out-of-plane direction). In such resin panels 50, the first plate portion 51, the second plate portion 52, and the cavity 570 extend linearly along the Y direction. Therefore, when manufacturing the resin panel 50 with a 3D printer, the position from which the resin material is extruded from the nozzle 100 is set to a curved or bent shape from the beginning, and the resin material is layered in the Y direction (directly upward direction).

[0060] (Bonding Structure) Figure 8 is an explanatory diagram showing the bonding structure between the resin panels 50 in the cabin 10 shown in Figure 1. In Figure 8, and in Figures 9, 10, 11, 12, 13, 14, and 15 described later, the area enclosed by the thick line L1 corresponds to one resin panel 50. In Figure 8 and other figures, the first plate portion 51 and the second plate portion 52 are drawn with solid lines sloping upwards to the right, and the cavity forming portion 57 is drawn with a dotted line sloping downwards to the right.

[0061] As shown in Figure 8, when joining adjacent resin panels 50, the portion where the ends of the adjacent resin panels 50 overlap in the thickness direction is joined by a joint member 61 such as a bolt. More specifically, of the adjacent resin panels 50, one resin panel 50 has a first plate-shaped end 581 which is cut out from the inner side (the side of the second plate portion 52) to reduce the thickness, and the other resin panel 50 has a second plate-shaped end 582 which is cut out from the outer side (the side of the first plate portion 51) to reduce the thickness. Therefore, by overlapping the first plate-shaped end 581 and the second plate-shaped end 582 in the thickness direction, the portions where the first plate-shaped end 581 and the second plate-shaped end 582 overlap in the thickness direction can be joined by the joint member 61 while the adjacent resin panels 50 are positioned.

[0062] The thickness of the first plate-shaped end 581 and the second plate-shaped end 582 is, for example, about half the thickness of the resin panel 50. Therefore, when manufacturing the resin panel 50 using a 3D printer in the process described with reference to Figure 6, the first plate-shaped end 581 and the second plate-shaped end 582 can be provided by making a portion of the end of the resin panel 50 protrude. Figure 8 illustrates a case where the resin panel 50 does not have a side plate portion 56 (see Figure 5) at its end, but if the resin panel 50 has a side plate portion 56 at its end, the first plate-shaped end 581 and the second plate-shaped end 582 may be formed using the side plate portion 56.

[0063] In the embodiment illustrated in Figure 8, both ends of one resin panel 50 are first plate-shaped ends 581, and both ends of the other resin panel 50 are second plate-shaped ends 582. However, in the resin panel 50, one end may be the first plate-shaped end 581 and the other end may be the second plate-shaped end 582.

[0064] (Another Joining Structure) Figure 9 is an explanatory diagram showing an alternative joining structure for the resin panels 50 in the cabin 10 shown in Figure 1. In the configuration shown in Figure 9, as in the configuration shown in Figure 8, when joining adjacent resin panels 50, the portions where the ends of adjacent resin panels 50 overlap in the thickness direction are joined by joint members 61 such as bolts.

[0065] In the configuration shown in Figure 9, one of the adjacent resin panels 50 has a first protrusion 561 that projects in a direction intersecting the thickness direction at its end, and the other resin panel 50 has a first recess 562 into which the first protrusion 561 fits at its end. Therefore, by fitting the first protrusion 561 into the first recess 562, the adjacent resin panels 50 can be positioned and the first protrusion 561 can be joined to the other resin panel 50 by a joint member 61. Here, the first protrusion 561 and the first recess 562 are constructed, for example, by utilizing the side plate portion 56 provided at the end of the resin panel 50.

[0066] In the embodiment shown in Figure 9, the resin panel 50 is provided with a first protrusion 561 on one end and a first recess 562 on the other end. However, the first protrusion 561 may be provided on both ends of the resin panel 50, and the first recess 562 may be provided on both ends of the adjacent resin panel 50.

[0067] (Main effects of Embodiment 1) As described above, in Embodiment 1, the main material of the roof portion 13 and the exterior wall portion 17 of the cabin 10 is a resin panel 50. Furthermore, all resin panels 50 are made of the same material. In addition, when constructing the cabin 10, the resin panels 50 are joined together by metal joint members 61, so when dismantling the cabin 10, the resin panels 50 can be easily recovered by removing the joint members 61. Accordingly, Embodiment 1 provides a cabin 10 that is easy to recycle.

[0068] Furthermore, by joining adjacent resin panels 50 together, the resin panels 50 constitute the roof portion 13 and the exterior wall portion 17 without needing to be fixed to a frame. Therefore, according to Embodiment 1, since no frame is used, the cabin 10 can be made lighter, the efficiency of recycling can be improved, and costs can be reduced. In particular, in the case of the mobile house 1, a lightweight cabin 10 is required, and according to Embodiment 1, this requirement can be met.

[0069] Furthermore, since the resin panel 50 can be easily manufactured not only in a flat shape, but also in shapes that are curved out of the plane, bent out of the plane, and bent out of the plane, a cabin 10 with a highly aesthetic design can be realized.

[0070] Furthermore, the resin panel 50 comprises a first plate portion 51, a second plate portion 52 positioned opposite the first plate portion 51, and a cavity forming portion 57 that forms a plurality of cavities 570 between the first plate portion 51 and the second plate portion 52. Therefore, the resin panel 50 has excellent heat insulation and sound insulation properties, and can also reduce the weight of the cabin 10.

[0071] Furthermore, since the resin panel 50 is manufactured using a 3D printer, the wall portions 53, such as the first wall portion 54 and the second wall portion 55, can be properly arranged in the cavity forming portion 57. Therefore, the cavity 570 can be properly formed, and the wall portions 53 can function effectively as reinforcing ribs. Consequently, even when the proportion of the cavity 570 is increased, a resin panel 50 with high strength can be realized. In addition, since the resin panel 50 is manufactured using a 3D printer, panels with shapes that are not limited to flat plates, but also curved out of plane, bent out of plane, and bent out of plane can be easily manufactured, thus enabling the realization of a cabin 10 with a highly aesthetic design.

[0072] [Modification 1 of Embodiment 1] Figure 10 is an explanatory diagram of a mobile house 1 according to Modification 1 of Embodiment 1 of the present invention. The basic configuration of Modification 1 of Embodiment 1, and Modifications 2, 3, 4, 5, and 6 described later, are the same as those of Embodiment 1 described with reference to Figures 1 to 9. Therefore, corresponding components are denoted by the same reference numerals and their detailed descriptions are omitted.

[0073] As shown in Figure 10, when joining resin panels 50 together, a connecting member 70 may be placed on one side in the thickness direction of adjacent resin panels 50, and both adjacent resin panels 50 may be joined to the common connecting member 70 by a joint member 61. As a result, adjacent resin panels 50 can be joined via the connecting member 70.

[0074] In this configuration, when dismantling the cabin 10, the resin panel 50 can be recovered separately from the joint member 61 by removing the joint member 61. Therefore, recycling of the resin panel 50 is easy. Furthermore, if the connecting member 70 is made of the same resin material as the resin panel 50, the resin panel 50 and the connecting member 70 can be recovered and recycled together.

[0075] Furthermore, even if the connecting member 70 is made of a different resin material than the resin panel 50, the resin panel 50 and the connecting member 70 can be collected separately by removing the joint member 61 and recycled. Therefore, even if the connecting member 70 is made of a different resin material that is cheaper than the resin material used for the resin panel 50, both the resin panel 50 and the connecting member 70 can be recycled.

[0076] Furthermore, in the configuration shown in Figure 10, of the adjacent resin panels 50 and connecting member 70, one member has a plurality of second protrusions on the side where the other member is located, and the other member has a plurality of second recesses on the side where the other member is located, each of which fits into the plurality of second protrusions. For example, of the adjacent resin panels 50 and connecting member 70, the connecting member 70 has a second protrusion 706 on the side where the resin panel 50 is located, and the resin panel 50 has a second recess 505 on the side where the connecting member 70 is located, into which the second protrusion 706 fits. Therefore, by fitting the second protrusion 706 into the second recess 505, the adjacent resin panels 50 and connecting member 70 can be positioned relative to each other and joined together by the joint member 61 via the connecting member 70.

[0077] Furthermore, as shown in Figure 10, in the resin panel 50, at least one of the first plate portion 51 and the second plate portion 52 is provided with a thickened portion 59 that protrudes toward the other plate portion at the part where the joint member 61 is attached. Therefore, the joint member 61 can be firmly fixed.

[0078] Furthermore, when attaching the joint member 61 to the end of the resin panel 50, the joint member 61 is attached to the side plate portion 56 provided at the end of the resin panel 50. Therefore, the joint member 61 can be firmly fixed.

[0079] In Figure 3, the joints between the resin panel 50 used for the roof section 13 and the resin panel 50 used for the right side 14, the joints between the resin panel 50 used for the front section 11 and the resin panel 50 used for the right side 14, and the joints between the resin panel 50 used for the rear section 12 and the resin panel 50 used for the right side 14 are corners. In this case, by using a connecting member 70 that is bent at the angle formed by adjacent resin panels 50 across the corner, the resin panels 50 can be securely joined.

[0080] [Modification 2 of Embodiment 1] Figure 11 is an explanatory diagram of a mobile house 1 according to modification 2 of Embodiment 1 of the present invention. In the form shown in Figure 11, a plurality of resin panels 50 used for the roof portion 13 and the exterior wall portion 17 include connecting resin panels 50c as connecting members 70 that overlap both adjacent resin panels 50 from one side in the thickness direction, and the connecting resin panels 50c are connected to both adjacent resin panels 50 by joint members 61. With this form, the connecting resin panels 50c used as connecting members 70 also have a cavity forming portion 57, so that the heat insulation and sound insulation can be improved.

[0081] In this case, if all resin panels 50, including the connecting resin panel 50c, are made of the same material, when dismantling the cabin 10, all resin panels 50, including the connecting resin panel 50c, can be collected and recycled together by removing the joint member 61.

[0082] Furthermore, even if the connecting resin panel 50c is made of a different resin material than the other resin panels 50, the connecting resin panel 50c can be collected separately from the other resin panels 50 by removing the joint member 61, and each can be recycled. Therefore, even if the resin panel 50c is made of a less expensive material than the other resin panels 50, recycling is easy.

[0083] Furthermore, as shown in Figure 11, the resin panel 50 and the connecting resin panel 50c are also provided with a thickened portion 59 projecting toward the other plate portion in at least one of the first plate portion 51 and the second plate portion 52, similar to the configuration described with reference to Figure 10, at the portion to which the joint member 61 is attached.

[0084] Figures 10 and 11 illustrate an example in which a thickened portion 59 is provided on both the first plate portion 51 and the second plate portion 52. However, the thickened portion 59 may be provided on only one of the first plate portion 51 or the second plate portion 52. In this case, it is preferable to provide the thickened portion 59 on the second plate portion 52, which is thinner than the first plate portion 51. Furthermore, when fixing a decorative panel or the like to the second plate portion 52 of the resin panel 50 with pins or the like, it is preferable to provide a thickened portion 59 protruding from the first plate portion 51 toward the second plate portion 52, or from the second plate portion 52 toward the first plate portion 51, at the mounting position of the pins or the like.

[0085] Furthermore, in the configuration shown in Figure 11, similar to the configuration shown in Figure 10, of the adjacent resin panels 50 and connecting members 70, the connecting member 70 has a second protrusion 706 on the side where the resin panel 50 is located, and the resin panel 50 has a second recess 505 on the side where the connecting member 70 is located into which the second protrusion 706 fits. Therefore, by fitting the second protrusion 706 into the second recess 505, the adjacent resin panels 50 and connecting members 70 can be positioned relative to each other and joined together by the joint member 61 via the connecting member 70.

[0086] In Figure 3, the joints between the resin panel 50 used for the roof section 13 and the resin panel 50 used for the right side 14, the joints between the resin panel 50 used for the front section 11 and the resin panel 50 used for the right side 14, and the joints between the resin panel 50 used for the rear section 12 and the resin panel 50 used for the right side 14 are corners. In this case, if a connecting resin panel 50c that is bent at the angle formed by adjacent resin panels 50 across the corner is used, the resin panels 50 can be securely joined.

[0087] [Modification 3 of Embodiment 1] Figure 12 is an explanatory diagram of a mobile house 1 according to modification 3 of Embodiment 1 of the present invention. As shown in Figure 12, in this embodiment, a positioning member 75 having a stepped first positioning portion 751 and a stepped second positioning portion 752 is used to join the resin panels 50.

[0088] Furthermore, when the two intersecting directions are designated as the first direction A and the second direction B, the plurality of resin panels 50 include a plurality of resin panels 50 (first resin panels 50a) laminated along the first direction A such that their ends form a stepped first step portion 566, and a plurality of resin panels 50 (second resin panels 50b) laminated along the second direction B such that their ends form a stepped second step portion 567.

[0089] Therefore, with the first stage portion 566 of each of the multiple first resin panels 50a and the multiple second resin panels 50b positioned on the first positioning portion 751 and the second stage portion 567 positioned on the second positioning portion 752, the multiple first resin panels 50a and the multiple second resin panels 50b can each be connected to the positioning member 75 by the joint member 61.

[0090] In the configuration shown in Figure 12, four first resin panels 50a are stacked together. Three of the first resin panels 50a, excluding the outermost first resin panel 50a, are directly connected to the positioning member 75 by a joint member 61, while the outermost first resin panel 50a is connected to the positioning member 75 by the joint member 61 via the other three first resin panels 50a.

[0091] Furthermore, the three second resin panels 50b, excluding the outermost second resin panel 50b, are directly connected to the positioning member 75 by a joint member 61, while the outermost second resin panel 50b is connected to the positioning member 75 by a joint member 61 via the other three second resin panels 50b.

[0092] Furthermore, at the end of the first resin panel 50a opposite to the positioning member 75, multiple resin panels 50, which are stacked along the first direction A so that their ends form a stepped first step portion 566 similar to the first resin panel 50a, are joined to the first resin panel 50a by a joint member 61.

[0093] Furthermore, at the end of the second resin panel 50b opposite to the positioning member 75, a plurality of resin panels 50, which are stacked along the second direction B so that their ends form a stepped second step portion 567 similar to the second resin panel 50b, are joined to the second resin panel 50b by a joint member 61.

[0094] In this configuration, if all resin panels 50, including the first resin panel 50a and the second resin panel 50b, are made of the same material, then when dismantling the cabin 10, all resin panels 50 can be collected and recycled together by removing the joint member 61.

[0095] Furthermore, even if the outermost resin panel 50 is made of a different material than the other resin panels 50, the different material resin panels 50 can be separated and collected by removing the joint member 61, and each can be recycled. Therefore, even if only the outermost resin panel 50 is made of a highly weather-resistant resin, recycling is easy.

[0096] When this configuration is adopted, the roof portion 13 and the exterior wall portion 17 become thick because multiple resin panels 50 are laminated together. However, by reducing the thickness of each individual resin panel 50, the thickness of the roof portion 13 and the exterior wall portion 17 can be optimized.

[0097] Furthermore, if all of the multiple first resin panels 50a, or all of the multiple second resin panels 50b, are directly connected to the positioning member 75 by the joint member 61, the strength can be improved.

[0098] [Modification 4 of Embodiment 1] Figure 13 is an explanatory diagram of a mobile house 1 according to Modification 4 of Embodiment 1 of the present invention. In Figure 13, in Modification 4, of the adjacent resin panels 50, one of the first plate portion 51 and the second plate portion 52 of one resin panel 50 is joined to the other resin panel 50 in a state where it partially overlaps the cavity forming portion 57 of the other resin panel 50 in the thickness direction.

[0099] For example, of the first plate portion 51 and the second plate portion 52, one plate portion is constructed separately from the cavity forming portion 57, while the other plate portion is constructed integrally with the cavity forming portion 57. Figure 13 illustrates a configuration in which the first plate portion 51 is constructed separately from the cavity forming portion 57, and the second plate portion 52 is constructed integrally with the cavity forming portion 57. When joining resin panels 50 with such configurations, the first plate portion 51 is joined to both second plate portions 52 of the adjacent resin panels 50 by a joint member 61, with a portion of it overlapping the cavity forming portions 57 of both adjacent resin panels 50 in the thickness direction.

[0100] More specifically, the first plate portion 51 is joined to the second plate portions 52 of both adjacent resin panels 50 by joint members 61 at the ends of the adjacent resin panels 50 and at positions separated from the ends. For example, the first plate portion 51 is joined to the side plate portions 56 at both ends of adjacent resin panels 50 by joint members 61, and at positions separated from the side plate portions 56, it is joined to the second plate portion 52 by joint members 61 at the thickened portion 59 provided on the second plate portion 52.

[0101] In this configuration, if the entire resin panel 50, including the first plate portion 51, is made of the same material, when dismantling the cabin 10, the joint member 61 can be removed, allowing the resin panel 50, including the first plate portion 51, to be collected and recycled together.

[0102] Furthermore, even if the first plate portion 51 of the resin panel 50 is made of a different resin material than the other parts, the parts made of different materials can be separated and collected by removing the joint member 61, and each can be recycled. Therefore, even if only the outermost first plate portion 51 is made of a highly weather-resistant resin, recycling is easy.

[0103] [Modification 5 of Embodiment 1] Figure 14 is an explanatory diagram of a mobile house 1 according to Modification 5 of Embodiment 1 of the present invention. In Modification 5 of Embodiment 1 shown in Figure 14, a hole is provided at the mounting position of the joint member 61 so that the head of the bolt 611 and the nut 612 are located inside the hole and do not protrude. More specifically, a hole 507 is provided on the outer surface of the resin panel 50 so that the head of the bolt 611 does not protrude. Also, a hole 707 is provided on the living space side of the connecting member 70 so that the nut 612 does not protrude.

[0104] Therefore, since no protrusions are generated on the outer surface of the cabin 10 or on the surface facing the living space, the aesthetic design of the cabin 10 can be improved. In addition, it is easy to fix the cover so as to cover the holes 507 and 707.

[0105] [Modification 6 of Embodiment 1] Figure 15 is an explanatory diagram of a mobile house 1 according to modification 6 of Embodiment 1 of the present invention. In the above-described embodiment, adjacent resin panels 50 were joined together by a joint member 61 equipped with a bolt 611 and a nut 612. However, as shown in the embodiments of Figures 10, 11, and 12, when joining members that overlap in the thickness direction, the members may be joined together by pressing each of the multiple protrusions provided on one member into the multiple recesses provided on the other member.

[0106] For example, as shown in Figure 15, the members may be joined by press-fitting each of the multiple second protrusions 706 provided on one of the adjacent resin panels 50 and connecting member 70 into the multiple second recesses 505 provided on the other resin panel 50. Alternatively, the members may be joined by press-fitting the second protrusions 506 provided on the resin panel 50 into the second recesses 705 provided on the connecting member 70.

[0107] In this case, for example, by making the tip portions of the second protrusions 506 and 706 thicker than the base portions, while making the opening portions of the second recesses 505 and 705 narrower than the inner portions, the bonding strength after press-fitting can be increased.

[0108] [Modification 7 of Embodiment 1] Although not shown in the figures, the outer surfaces of the roof portion 13 and the outer wall portion 17 of the cabin 10 may be painted. For example, if the outer surfaces of the roof portion 13 and the outer wall portion 17 are painted with a paint whose main component is the same resin material as the resin panels 50 of the roof portion 13 and the outer wall portion 17, the recycling of the resin panels 50 will not be hindered. Furthermore, if a paint is used that allows the paint film to be easily peeled off the roof portion 13 and the outer wall portion 17 during recycling, the resin panels 50 can be easily recycled even after painting.

[0109] [Modification 8 of Embodiment 1] Although not shown in the illustration, an adhesive may be used when joining adjacent resin panels 50. For example, if an adhesive mainly composed of the same material as the resin panels 50 of the roof portion 13 and the exterior wall portion 17 is used, the recycling of the resin panels 50 will not be hindered even when bonding is performed.

[0110] [Improved Example 1 of Embodiment 1] Figure 16 is an explanatory diagram of a mobile house 1 according to improved example 1 of Embodiment 1 of the present invention. In Figure 16 and Figure 17, which will be described later, the resin panel 50 on the front 11 and the resin panel 50 on the rear 12 shown in Figure 3 are omitted. Also, in Figure 16 and Figure 17, which will be described later, the areas where the resin panel 50 is bent at the boundary between the roof portion 13 and the exterior wall portion 17, and at the boundary between the exterior wall portion 17 and the floor portion 16 are indicated by dotted lines L2. Also, in Figure 16 and Figure 17, which will be described later, some of the resin panels 50 are shown removed from the cabin 10, as indicated by the arrows.

[0111] As shown in Figure 16, the cabin 10 for the mobile house according to improved example 1 also has multiple resin panels 50 on the exterior wall portion 17, roof portion 13, and floor portion 16, similar to embodiment 1, and in the exterior wall portion 17, roof portion 13, and floor portion 16, the multiple resin panels 50 are joined to adjacent resin panels 50.

[0112] In improved example 1, the resin panel 50 positioned at the uppermost position of the right side 14 is bent into a roughly L-shape to form part of the roof portion 13. Also, the resin panel 50 positioned at the lowermost position of the right side 14 is bent into a roughly L-shape to form part of the floor portion 16.

[0113] Therefore, in the cabin 10 according to improved example 1, there is no need to join the resin panels 50 at the boundary between the right side 14 and the roof portion 13, or at the boundary between the left side 15 and the roof portion 13. Also, there is no need to join the resin panels 50 at the boundary between the right side 14 and the floor portion 16, or at the boundary between the left side 15 and the floor portion 16. Thus, the cabin 10 according to improved example 1 can achieve the same effects as in embodiment 1, while also increasing the productivity and strength of the cabin 10. In addition, it is possible to improve the airtightness at corner portions such as the boundary between the right side 14 and the roof portion 13, and the boundary between the right side 14 and the floor portion 16.

[0114] [Improved Example 2 of Embodiment 1] Figure 17 is an explanatory diagram of a mobile house 1 according to an improved example 2 of Embodiment 1 of the present invention. As shown in Figure 17, the cabin 10 for the mobile house according to improved example 2 also has a plurality of resin panels 50 in the exterior wall portion 17, roof portion 13, and floor portion 16, similar to Embodiment 1, and in the exterior wall portion 17, roof portion 13, and floor portion 16, the plurality of resin panels 50 are joined to adjacent resin panels 50.

[0115] In improved example 2, the resin panel 50 of the roof portion 13 is bent downward in a roughly L-shape on the left side to form the uppermost part of the left side surface 15, and is bent downward in a roughly L-shape on the right side to form the uppermost part of the right side surface 14. The resin panel 50 of the floor portion 16 is bent upward in a roughly L-shape on the left side to form the lowermost part of the left side surface 15, and is bent upward in a roughly L-shape on the right side to form the lowermost part of the right side surface 14. Therefore, the cabin 10 according to embodiment 3 has the same effect as improved example 1.

[0116] [Embodiment 2] Figure 18 is an explanatory diagram of a mobile house 1 according to Embodiment 2 of the present invention. Figure 19 is an explanatory diagram of a resin panel 50 used for the body portion 18 of the cabin 10 shown in Figure 18. As shown in Figure 18, the mobile house 1 according to Embodiment 2 also comprises a cabin 10 whose interior is used as a living space and a chassis 30 to which the cabin 10 is fixed above, similar to Embodiment 1.

[0117] As shown in Figures 18 and 19, in Embodiment 2, the cabin 10 includes a body portion 18 with a front 11 and a rear portion that are formed in a substantially circular shape. The lower end of the body portion 18 is cut out in a linear manner, like a chord to a circle, to form a floor portion 16. At the bottom of the body portion 18, reinforcing ribs 501 extend in the front-rear direction on both the left and right sides, and between the ribs 501, connecting members 70 made of the same resin material as the resin panel 50 are arranged so as to overlap with the floor portion 16. Therefore, adjacent resin panels 50 can be joined together via the connecting members 70.

[0118] The diameter of the body portion 18 gradually increases from the front 11 to an intermediate position toward the rear 12, and then gradually decreases from that intermediate position. At the front end of the body portion 18, a plurality of resin panels 50 constituting the front 11 are arranged in a substantially circular frame shape. Although not shown in the figures, a plurality of resin panels 50 constituting the rear surface are arranged at the rear end of the body portion 18. In the cabin 10 according to Embodiment 2, there is no boundary between the roof portion 13 and the right side 14, and no boundary between the roof portion 13 and the left side 15, so the upper part of the body portion 18 corresponds to the roof portion 13, and the side parts of the body portion 18 correspond to the outer wall portion 17 (right side 14 and left side 15).

[0119] The fuselage 18 is equipped with a plurality of resin panels 50 in at least the roof portion 13 and the exterior wall portion 17. In at least the roof portion 13 and the exterior wall portion 17, the plurality of resin panels 50 are joined together by adjacent resin panels 50, thereby forming at least the roof portion 13 and the exterior wall portion 17 of the cabin 10 without using a frame. In the floor portion 16, adjacent resin panels 50 are also joined together.

[0120] The resin panel 50 can adopt the configuration described in Embodiment 1, the modified version, and the improved version. For example, in the mobile house 1 according to Embodiment 2, as described with reference to Figure 5, at least the roof portion 13 and the exterior wall portion 17 of the cabin 10 are configured as resin panels comprising a first plate portion 51, a second plate portion 52 located at least opposite the first plate portion 51, and a cavity forming portion 57 that forms a plurality of cavities 570 between the first plate portion 51 and the second plate portion 52.

[0121] In the body section 18, resin panels 50 with a shape curved out of plane are arranged in the circumferential direction, but since there are no corners, adjacent resin panels 50 in the circumferential direction can be easily joined. Also, in the body section 18, resin panels 50 with a shape curved out of plane are arranged in the front-to-back direction, but since there are no corners, adjacent resin panels 50 in the front-to-back direction can be easily joined.

[0122] In Embodiment 2, similar to the improved example 2 of Embodiment 1, the resin panel 50 of the floor portion 16 is bent upward on the right side to form the lowest part of the right side portion, and is also bent upward on the left side to form the lowest part of the left side portion 15. Therefore, there is no need to join the resin panels 50 together at the boundary between the floor portion 16 and the outer wall portion 17. Thus, the mobile house 1 and cabin 10 according to Embodiment 2 have the same effects as Embodiment 1, and the strength of the cabin 10 and the airtightness at the boundary between the floor portion 16 and the outer wall portion 17 can be improved.

[0123] [Modification of Embodiment 2] In Embodiment 2, described with reference to Figures 18 and 19, the lower part of the cylindrical body 18 was linearly cut out in order to make the floor portion 16 flat. However, the cabin 10 may be constructed using the cylindrical body 18 as is, and the floor portion 16, which is flat, may be constructed by adjusting the thickness of the lower part of the cylindrical body 18 inside the body 18. With such a shape, the design of the mobile house 1 and cabin 10 can be enhanced. Furthermore, since two adjacent resin panels 50 in the circumferential direction are connected with the same radius of curvature at any point in the circumferential direction, the resin panels 50 can be easily joined together by the joining structure described with reference to Figures 8 to 11 and Figure 13.

[0124] [Embodiment 3] Figure 20 is an explanatory diagram of a mobile house 1 according to Embodiment 3 of the present invention. As shown in Figure 20, the mobile house 1 according to Embodiment 3, like Embodiment 1, comprises a cabin 10 whose interior is a living space and a chassis 30 to which the cabin 10 is fixed above. The cabin 10 is basically a rectangular parallelepiped, but irregular irregularities are formed on the outer surface of the cabin 10. For example, the appearance of the cabin 10 may be rock-like to match the scenery of the place where the mobile house 1 is installed. To realize such a form, when manufacturing the resin panel 50 with a 3D printer in the process described with reference to Figure 6, the irregularities can be formed on the outer surface of the first plate portion 51.

[0125] The resin panel 50 can adopt the configuration described in Embodiment 1, the modified version, and the improved version. For example, in the mobile house 1 according to Embodiment 3, as described with reference to Figure 5, at least the roof portion 13 and the exterior wall portion 17 of the cabin 10 are configured as resin panels comprising a first plate portion 51, a second plate portion 52 located at least opposite the first plate portion 51, and a cavity forming portion 57 that forms a plurality of cavities 570 between the first plate portion 51 and the second plate portion 52.

[0126] [Embodiment 4] In Embodiments 1, 2, and 3, the cabin 10 used in the mobile house 1 was constructed by joining multiple resin panels 50 to form the roof portion 13 and the exterior wall portion 17. However, a cabin 10 similar to the cabin 10 in Embodiments 1, 2, and 3 may be realized by using a 3D printer in the manufacturing process of the cabin 10 to integrally construct the entire roof portion 13 and the exterior wall portion 17 in the form of a resin panel. Alternatively, a 3D printer may be used in the manufacturing process of the cabin 10 to integrally construct at least the roof portion 13 and the exterior wall portion 17 of the cabin 10 in the form of a resin panel comprising a first plate portion 51, a second plate portion 52 positioned opposite the first plate portion 51, and a cavity forming portion 57 that forms multiple cavities 570 between the first plate portion 51 and the second plate portion 52, as described with reference to Figure 6. According to Embodiment 4, the process of joining the resin panels 50 is unnecessary.

[0127] [Embodiment 5] In Embodiment 4, the present invention was applied to a cabin 10 used in the mobile house 1. However, in a cabin 10 other than the mobile house 1, the entire roof portion 13 and exterior wall portion 17 may be integrally constructed in the form of a resin panel using a 3D printer, thereby realizing a cabin 10 similar to the cabin 10 in Embodiments 1, 2, and 3. In this case, in the manufacturing process of the cabin 10, as described with reference to Figure 6, a process is carried out to integrally construct at least the roof portion 13 and exterior wall portion 17 of the living space in the form of a resin panel, comprising a first plate portion 51, a second plate portion 52 located opposite the first plate portion 51, and a cavity forming portion 57 that forms a plurality of cavities 570 between the first plate portion 51 and the second plate portion 52, using a 3D printer. According to Embodiment 5, the process of joining the resin panels 50 is unnecessary.

[0128] [Other Embodiments] Although the present invention has been described above based on the embodiments described above, the present invention is not limited to the embodiments described above. It can be implemented in various forms without departing from the spirit of the invention, and for example, the following modifications are also possible.

[0129] For example, in the above embodiment, a resin panel 50 manufactured by a 3D printer was used for the floor portion 16. However, if the flooring material is flat, a resin panel manufactured by a method other than a 3D printer may be used for the floor portion 16.

[0130] In the above embodiment, the front 11 and rear 12 are constructed from resin panels 50. However, instead of providing resin panels 50 on the front 11 and rear 12, a configuration may be adopted in which window frames 21 and hinges 42 are directly fixed to the front and rear ends of the resin panels 50 provided on the roof portion 13 and the exterior wall portion 17.

[0131] In the above embodiment, a configuration was described in which the cavities 570 in the cavity-forming portion 57 of the resin panel 50 are regularly partitioned by plate-shaped wall portions 53. However, a configuration in which bubble-like cavities are randomly distributed in the cavity-forming portion 57 may also be adopted.

[0132] In the mobile house and cabin according to the present invention, the main materials for the roof and exterior walls of the cabin are multiple resin panels. Therefore, it is possible to provide a mobile house and cabin that is easy to recycle. Accordingly, according to the present invention, it is possible to provide a mobile house and cabin with high market potential in the mobile house and cabin industry.

[0133] In another embodiment of the present invention, the roof and exterior walls of the cabin are integrally constructed as resin panels using a 3D printer. Therefore, it is possible to provide a mobile house and cabin that is easily recyclable. Thus, according to the present invention, it is possible to provide a mobile house and cabin with high market potential in the mobile house and cabin industry.

[0134] 1 Mobile house, 10 Cabin, 11 Front, 12 Rear, 13 Roof section, 14 Right side, 15 Left side, 16 Floor section, 17 Exterior wall section, 18 Body section, 21 Window frame, 22 Window glass, 30 Chassis, 31 Cargo bed, 32 Tires, 33 Trailer jack, 34 Connecting section, 35 Container lock, 36 Spacer, 41 Door, 42 Hinges, 50, 50c Resin panel, 50a First resin panel, 50b Second resin panel, 51 First plate section, 52 Second plate section, 53 Wall section, 54, 541, 542, 543 First wall section, 55 Second wall section, 56 Side plate section, 57 Cavity forming section, 59 Thick section, 61 Joint member, 70 Connecting member, 75 Positioning member, 100 Nozzle, 110, 120 Opening, 500 Resin material, 501 Rib, 505, 705 Second recess, 506, 706 Second protrusion, 507, 707 Hole, 561 First protrusion, 562 First recess, 566 First step, 567 Second step, 570 Cavity, 581 First plate-shaped end, 582 Second plate-shaped end, 611 Bolt, 612 Nut, 705 Second recess, 706 Second protrusion, 751 First positioning part, 752 Second positioning part, A First direction, B Second direction

Claims

1. A mobile house comprising: a chassis with tires on the underside of the cargo bed; and a cabin mounted on the chassis, the interior of which serves as a living space; wherein the cabin comprises a plurality of resin panels, and the plurality of resin panels are joined together to form at least the roof portion and the exterior wall portion of the cabin.

2. A mobile house according to claim 1, wherein the resin panel comprises a first plate portion, a second plate portion located at least a portion of which faces the first plate portion, and a cavity forming portion which forms a plurality of cavities between the first plate portion and the second plate portion.

3. A mobile house according to claim 2, wherein the cavity forming portion comprises a plate-shaped wall portion that partitions the space between the first plate portion and the second plate portion into the plurality of cavities.

4. A mobile house according to any one of claims 1 to 3, characterized in that, of the adjacent resin panels, one resin panel has a first plate-shaped end in which the thickness of the plate is reduced by cutting out from the inner side, and the other resin panel has a second plate-shaped end in which the thickness of the plate is reduced by cutting out from the outer side, and the adjacent resin panels are joined together in such a state that the first plate-shaped end and the second plate-shaped end overlap in the thickness direction.

5. A mobile house according to any one of claims 1 to 3, characterized in that, of the adjacent resin panels, the end of one resin panel has a first protrusion projecting in a direction intersecting the thickness direction, the end of the other resin panel has a first recess into which the first protrusion fits, and the adjacent resin panels are joined together with the first protrusion fitted into the first recess.

6. A mobile house according to any one of claims 1 to 3, characterized in that a plate-shaped connecting member is provided on both adjacent resin panels, overlapping from one side in the thickness direction and joined to both adjacent resin panels, and the adjacent resin panels are joined to each other via the connecting member.

7. A mobile house according to claim 6, characterized in that the plurality of resin panels include resin panels that overlap both adjacent resin panels from one side in the thickness direction as the connecting members.

8. A mobile house according to claim 6, wherein, of the adjacent resin panels and the connecting member, one member has a plurality of second protrusions on the side where the other member is located, the other member has a plurality of second recesses on the side where the one member is located, and the adjacent resin panels are connected to each other via the connecting member with each of the plurality of second protrusions fitted into the plurality of second recesses.

9. A mobile house according to any one of claims 1 to 3, comprising a positioning member having a stepped first positioning portion and a stepped second positioning portion, wherein when two directions intersecting each other are designated as the first direction and the second direction, the plurality of panels include a plurality of first resin panels laminated along the first direction such that their ends form a stepped first step portion, and a plurality of second resin panels laminated along the second direction such that their ends form a stepped second step portion, wherein each of the plurality of first resin panels and the plurality of second resin panels is connected to the positioning member with the first step portion positioned in the first positioning portion and the second step portion positioned in the second positioning portion.

10. A mobile house according to claim 2 or 3, characterized in that, of the adjacent resin panels, one resin panel is bonded to the other resin panel such that one of the first plate portion and the second plate portion partially overlaps the cavity forming portion of the other resin panel in the thickness direction.

11. A mobile house according to claim 2 or 3, characterized in that at least one of the first plate portion and the second plate portion has a thickened portion that protrudes toward the other plate portion.

12. A mobile house according to any one of claims 1 to 3, characterized in that it comprises a joint member for connecting adjacent resin panels.

13. A mobile house according to claim 8, characterized in that the connecting member is connected to both adjacent resin panels by each of the plurality of second protrusions being press-fitted into the plurality of second recesses.

14. A mobile house according to any one of claims 1 to 3, characterized in that the plurality of resin panels include any of the following: a resin panel with a shape curved out of the plane, a resin panel with a shape curved out of the plane, and a resin panel with a shape bent out of the plane.

15. A cabin in a mobile house whose interior is used as a living space, characterized in that it comprises a plurality of resin panels, wherein adjacent resin panels are joined together to form at least the roof portion and the exterior wall portion of the cabin.

16. The cabin according to claim 15, wherein the resin panel comprises a first plate portion, a second plate portion located at least a portion of which faces the first plate portion, and a cavity forming portion which forms a plurality of cavities between the first plate portion and the second plate portion.

17. A method for manufacturing a cabin according to claim 15 or 16, characterized by including a step of manufacturing the resin panel using a 3D printer.

18. A mobile house comprising a chassis with tires on the underside of the cargo bed, and a cabin mounted on the chassis, the cabin having an interior that serves as a living space, wherein at least the roof portion and the exterior wall portion of the cabin are integrally formed in the form of resin panels.

19. A mobile house according to claim 18, characterized in that at least the roof portion and the exterior wall portion of the cabin are integrally constructed in the form of a resin panel comprising a first plate portion, a second plate portion located opposite the first plate portion, and a cavity forming portion that forms a plurality of cavities between the first plate portion and the second plate portion.

20. A cabin characterized in that at least the roof portion and the exterior wall portion of the living space are integrally constructed in the form of a resin panel comprising a first plate portion, a second plate portion located opposite the first plate portion, and a cavity forming portion that forms a plurality of cavities between the first plate portion and the second plate portion.

21. A method for manufacturing a cabin, characterized by comprising the step of integrally constructing at least the roof portion and the exterior wall portion of a living space in the form of a resin panel, comprising a first plate portion, a second plate portion located opposite the first plate portion, and a cavity forming portion that forms a plurality of cavities between the first plate portion and the second plate portion, using a 3D printer.

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