Expandable trailer house, manufacturing method and construction method for expandable trailer house

Abstract

To prevent accumulation of sand and dust on a rail, reduce wear of the rollers and rail, prevent rusting of the rail, have a simple structure, achieve cost reduction, reduce the weight burden on workers, and ensure the height of an opening. [Solution] The expandable trailer house 1 has a ceiling 21, side walls 22-25 and a floor 26, and comprises a box-shaped main body 2 having a rectangular opening 29 in the side wall 22 in the longitudinal direction L, a framework 3 which is attached to the opening 29 and can be changed between a stored state and an expanded state, and a rail member 4, and the framework 3 is divided into a roof panel 31 which is rotatably attached to the upper edge of the opening 29 in the longitudinal direction, a floor panel 32 which is rotatably attached to the lower edge of the opening 29 in the longitudinal direction L, a left side panel 33 which is rotatably attached to the left edge of the opening 29 in the height direction H, a right side panel 34 which is rotatably attached to the right edge of the opening 29 in the height direction H, and a front panel 35 which has rollers 35b on its upper edge 35a which can move along the rail member 4.

Description

[Technical field]

[0001] The present invention relates to an expandable trailer house that can be towed by a vehicle, and a manufacturing method and construction method for the expandable trailer house. [Background technology]

[0002] In order to provide a trailer house in which the internal space expansion section can be smoothly inserted and removed and the structure of the internal space expansion section can be simplified, the invention of Patent Document 1 configures a small room section support device that supports the small room section from a pair of front and rear support roller devices 41, 41. Each support roller device 41 is configured from a guide pipe 43 fixed to the underside of the floor section of the house main body, a support guide pipe 45 slidably inserted into this guide pipe 43, and a support rod 47 slidably inserted into this support guide pipe 45. A vertically movable roller device 49 is attached to the tip of the support guide pipe 45, and a vertically movable roller device 49 is also attached to the tip of the support rod 47.

[0003] The invention of Patent Document 2 provides a house whose interior can be expanded, a house interior expansion method, and a trailer house, which is configured so that there is no difference in height between the main body floor panel placed on the floor inside the house main body when expanded and the interior expansion panel placed in the interior expansion house after expansion. The interior expansion frame has a bottom frame part that is disposed in the blank part between the side floor parts when pushed in, and rollers that are attached at an interval above the bottom frame part and run on guide rails that enable the interior expansion frame to be pulled out and pushed in through an opening from the house main body.

[0004] The invention of Patent Document 3 proposes a trailer house that is, first, easy to move and transport, second, easy to install, third, does not take up space for storage, movement, and transportation, and can be installed and used in a larger space, and fourth, can be used for various purposes such as residence, store, office, workshop, lodging, rest area, etc. This trailer house is towed and moved, and has a chassis frame 1, wheels arranged under the chassis frame 1, and a house part 3 placed on the chassis frame 1. The house part 3 has a parent unit 4 connected and fixed on the chassis frame 1, and a child unit 5 assembled in a nested manner to the parent unit 4. A rail part 22 is provided under the parent unit 4, an extension frame 23 and an extension rail 24 are provided on the outer side of the chassis frame 1, rollers 25 are provided under the child unit 5, and a connecting part and a lifting leg are further provided on the chassis frame 1, etc.

[0005] The invention of Patent Document 4 is a camper in which a basic body with one side open is installed on the loading platform of a drivable vehicle body, a movable chamber having a space communicating with the interior of the basic body is arranged so as to be able to be pulled out and stored from the basic body, and a movable part of an extension drive means having a fixed part attached to the vehicle body is connected to the movable chamber, and when necessary, the extension drive means can be operated to allow the movable chamber to be extended from the basic body using rails and rollers.

[0006] The invention of Patent Document 5 is a mobile simple house characterized in that a box body forming a main room inside is formed so as to be loadable onto the bed of a vehicle such as a truck or trailer, and an auxiliary box body is provided on the side of the box body so as to slide on a guide rail by an actuating cylinder, forming a protruding chamber communicating with the main room, and when the auxiliary box body is protruding outward from the box body, the interior space is expanded, and when the auxiliary box body is stored inside the box body, the interior space is reduced, making it possible to transport the house.

[0007] The invention in Patent Document 6 provides a trailer house that can be expanded to about two to three times its floor area when the floor, walls, and roof are unfolded. The movable walls are opened and moved on rails built into the floor panels, forming four walls that are continuous with the side wall panels.

[0008] The invention of Patent Document 7 proposes an expandable trailer house in which each component of a box-frame structure is deployed without using rails, and a structure in which each side wall component is folded up like a folding screen and the floor and roof components are rotated to deploy each component is shown in Figures 2 to 4 and corresponding locations. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Patent No. 5002781 [Patent Document 2] Patent No. 7085782 [Patent Document 3] Japanese Patent Application Publication No. 11-107553 [Patent Document 4] Japanese Patent Application Publication No. 55-019657 [Patent Document 5] Japanese Unexamined Patent Publication No. 62-233381 [Patent Document 6] Utility Model Registration No. 3107648 [Patent Document 7] Patent No. 7199107 Summary of the Invention [Problem to be solved by the invention]

[0010] However, although the trailer houses disclosed in the above Patent Documents 1 to 6 use rails to move the box frame, they have the following problems and are not yet satisfactory.

[0011] In conventional trailer houses, dust and other particles tend to accumulate on the rails, causing wear on the rollers and rails and making the rails prone to rust. In addition, a large number of rails are required, which requires strength, resulting in a complex structure and the need for durability in the rollers and rails, which increases costs. Furthermore, due to the strength of the rails, there is a limit to how far the width of the five walls of the box frame can be expanded.

[0012] Conventional trailer houses require all five walls of the box frame to move simultaneously along rails, and expanding the house by hand places a heavy burden on the worker.

[0013] In addition, in Patent Document 7, due to the waterproof structure, the horizontal members constituting the box frame are also used as waterproof rising parts (beams), and materials are also required to support the roof, so that part protrudes downward, creating a hanging wall where the main body and the extension part go back and forth, damaging the sense of unity. Furthermore, in Patent Document 7, the wider the extension width is, the larger the horizontal members and waterproof rising parts (beams) constituting the box frame become. The structure prevents wind and rain from blowing in with the protruding members of the roof members and box-shaped grooves, and the tip is made into a box shape, which requires precise and complex construction, increasing costs, and since this waterproof structure requires height, the roof height is low. As a result, the opening height is low, making it difficult to expand the volume when expanded in the expanded state.

[0014] The trailer house in Patent Document 7 has few walls, so it needs to be made of steel from the viewpoint of strength, and when unfolding the box-frame structure, two side wall members and one side wall member that are connected in two halves must be unfolded in a sliding manner like a folding screen, which places a heavy burden on the worker. Therefore, from the viewpoint of workability, there is a limit to the expansion of the volume when expanding.

[0015] Therefore, the objectives of the present invention are to prevent the accumulation of dust and other particles on the rails, reduce wear on the rollers and rails, prevent rust on the rails, have a simple structure, reduce costs, reduce the weight burden on workers, and enable an increase in volume when expanded. [Means for solving the problem]

[0016] In order to solve the above problems, the gist of this invention is not to adopt a method in which the entire five-sided box frame is moved on rails, but rather to divide the box frame into a roof panel, floor panel, left side panel, right side panel, and front panel, and to structure the roof panel, floor panel, left side panel, and right side panel to be rotatable open and closed, and to structure the front panel to be suspended from rails and moved along the rails.

[0017] The first invention relates to a vehicle having a box-shaped main body having a rectangular opening in a side wall in the longitudinal direction, a framework attached to the opening and changeable between a stored state and an expanded state, and a rail member, the framework being divided into a roof panel rotatably attached to an upper edge of the opening in the longitudinal direction, a floor panel rotatably attached to a lower edge of the opening in the longitudinal direction, two side panels rotatably attached to both sides of the opening in the height direction, and a front panel having rollers on its upper edge that are movable along the rail member; and a front panel are erected in the opening in the width direction of the main body from the outside to the inside of the main body, the rail member is divided into a long rail and a short rail shorter than the long rail, the long rail is fixed to the back surface of the roof panel and the short rail is fixed within the main body in the width direction, and when the structure changes between the stored state and the expanded state, the roof panel rotates and unfolds so that the long rail and the short rail are continuous, and the front panel is suspended from the rail member and moves.

[0018] The present invention has a structure in which the rail members are not exposed to the outside air, so that dust and the like are less likely to accumulate on the rail members, wear on the rollers and rail members is less, and the rail members are less likely to rust. In addition, the present invention reduces the weight load on the rail members and the amount of rail members by making the member that moves along the rail members only the front panel instead of the entire body, resulting in a simple structure, improved durability of the rollers and rail members, and cost reduction.

[0019] In the present invention, each panel of the frame is divided and can operate independently, so that the weight load on the worker can be reduced when changing the frame between the stored state and the expanded state. When moving the front panel, the weight load on the rail member can be reduced, and the number of rail members can be reduced, so that the volume during expansion can be increased. In addition, the burden on the worker is reduced.

[0020] In the present invention, it is preferable that the short rail has an expandable structure that enables the short rail to be extended or retracted relative to the long rail.

[0021] According to this configuration, the present invention has an extendable structure that allows the rail to be moved in and out from the short rail relative to the long rail when changing between the stored state and the expanded state, thereby smoothing the connection between the long rail and the short rail and facilitating the movement of the front panel.

[0022] In the expanded state, it is preferable that the width of the roof panel is set longer than the width of the floor panel, and the lower end of the front panel abuts against or fits into the tip of the floor panel.

[0023] With this configuration, the present invention allows the temporary support member that supports the roof panel to be supported by the ground rather than the floor panel when the main body changes between the stored state and the expanded state, thereby preventing damage to the floor panel by the temporary support member and also preventing rainwater from entering between the front panel and the floor panel.

[0024] In the stored position, the roof panel preferably closes the opening and forms a side wall of the body.

[0025] With this configuration, in the stored state of the framework, the present invention allows each panel to be folded up and stored inside the main body, and the roof panel can function as an outer cover for the opening. The roof panel, which is originally waterproof, serves as the outer cover for the opening, which is advantageous in terms of waterproofing. In particular, with regard to the floor panels, it is preferable in terms of jack construction to provide an exposed floor structure for reinforcing strength on the back side of the floor panel and support the floor structure with a jack, but since the floor panel is not exposed to the outside in the stored state, even if such an exposed floor structure is provided on the back side of the floor panel, there is no need to worry about waterproofing the floor panel, and the aesthetic appearance of the house in the stored state is not marred.

[0026] It is preferable that a waterproof section is provided between the roof panel and the upper edge of the opening, the waterproof section comprising a first waterproof section having a protruding section and a falling section provided along the upper edge of the opening, and a second waterproof section having a protruding section and a rising section provided along the upper edge of the roof panel, the first waterproof section being provided opposite and above the second waterproof section.

[0027] With this structure, the present invention can prevent rainwater from entering at least in the expanded state, and the waterproofing is easy to install and does not require height for the waterproofing structure, so the roof height does not need to be lowered. This reduces the burden of waterproofing measures.

[0028] The second invention comprises a body manufacturing step of manufacturing a box-shaped body having a rectangular opening in a side wall in the longitudinal direction, and a body installation step of attaching a body changeable between a stored state and an expanded state to the opening, the body installation step comprising a roller attachment step of attaching rollers to an upper side of a front panel, a rail member preparation step of preparing a rail member divided into a long rail and a short rail shorter than the long rail, a long rail fixing step of fixing the long rail to a back surface of a roof panel, and a short rail fixing step of fixing the short rail in the width direction inside the body, and in the long rail fixing step and the short rail fixing step, the body is fixed to the stored state and This is a method for manufacturing an expandable trailer house, characterized in that when changing between expanded states, the roof panel rotates and unfolds so that the long rails and the short rails are continuous and fixed so that the rollers of the front panel can pass through, and the structure installation step further includes a side panel installation step of rotatably attaching two side panels to both sides of the height direction of the opening, a floor panel installation step of rotatably attaching a floor panel to the lower side of the opening in the longitudinal direction, a roof panel installation step of rotatably attaching the roof panel to the upper side of the opening in the longitudinal direction, and a front panel installation step of installing the rollers of the front panel on the short rails.

[0029] The second invention has the same effects as the first invention.

[0030] The third invention is a construction method for an expandable trailer house comprising a box-shaped main body having a rectangular opening in a side wall in the longitudinal direction, a framework attached to the opening and changeable between a stored state and an expanded state, and rail members, the framework comprising a roof panel rotatably attached to an upper edge of the longitudinal direction of the opening, a floor panel rotatably attached to a lower edge of the longitudinal direction of the opening, two side panels rotatably attached to both sides of the opening in the height direction, and a front panel having rollers on its upper edge that are movable along the rail members, the rail members being divided into a long rail and a short rail that is shorter than the long rail, the long rail being fixed to the back surface of the roof panel, and the short rail being fixed inside the main body in the lateral width direction, a storing step of storing the roof panel in a stored state in which the panels are erected in order from the outside to the inside of the main body in the width direction of the main body at an opening of the main body; a roof panel rotating step of rotating and unfolding the roof panel from the stored state; a supporting step of supporting the roof panel with temporary support members; a floor panel unfolding step of rotating and unfolding the floor panel; a connecting step of connecting the short rails and the long rails; a side panel unfolding step of rotating and unfolding the side panels; and a front panel unfolding step of moving the rollers of the front panel from the short rails to the ends of the long rails, removing the temporary support members, and configuring the structure into a box frame shape, with the roof panel supported by temporary support members and the short rails and long rails connected.

[0031] The third invention has the same effects as the first and second inventions. [Brief description of the drawings]

[0032] [Figure 1] FIG. 2 is a front view of the expandable trailer house according to the embodiment of the present invention in a stored state. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] 6 is a cross-sectional view taken along line VI-VI of FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 5. [Figure 8] FIG. 2 is a front view of the expandable trailer house according to the embodiment of the present invention in an expanded state. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. 13 is a cross-sectional view taken along line XIII-XIII of FIG. 8. [Figure 14] This is a reference diagram of the same cross section with added facilities such as a kitchen and bathtub. [Figure 15] 13 is a cross-sectional view taken along the line XV-XV of FIG. 12. [Figure 16] FIG. 1 is a left side view of the unfolded portion 1. [Figure 17] 17 is a cross-sectional view taken along line XVII-XVII of FIG. 16. [Figure 18] FIG. [Figure 19] 19 is a cross-sectional view taken along the line XIX-XIX of FIG. 18. [Figure 20] FIG. 2 is a left side view of the unfolded portion 2. [Figure 21] 21 is a cross-sectional view taken along line XXI-XXI of FIG. 20. [Figure 22] FIG. [Figure 23] 23 is a cross-sectional view taken along line XXIII-XXIII of FIG. 22. [Figure 24] FIG. 3 is a left side view of the unfolded portion 3. [Diagram 25] This is a cross-sectional view of Figure 24 taken along the line XXV-XXV. [Figure 26] FIG. 3 is a plan view of the unfolded portion 3. [Figure 27] This is a cross-sectional view taken along line XXVII-XXVII in Figure 26. [Figure 28] FIG. 4 is a left side view of the unfolded portion 4. [Figure 29] 29 is a cross-sectional view taken along line XXIX-XXIX of FIG. 28. [Diagram 30] FIG. 4 is a plan view of the unfolded portion 4. [Diagram 31] This is a cross-sectional view of Figure 30 along the line XXXI-XXXI. [Diagram 32] FIG. 5 is a left side view of the unfolded portion 5. [Diagram 33] This is a cross-sectional view taken along the line XXXIII-XXXIII of Figure 32. [Diagram 34] FIG. [Diagram 35] This is a cross-sectional view of XXXV-XXXV in Figure 34. [Diagram 36] (a) is a partial enlarged view of part A in Figure 7 (the floor panel, left side panel, and right side panel are omitted), (b) is a partial enlarged view of part A in Figure 19 (the floor panel, left side panel, and right side panel are omitted), (c) is a partial enlarged view of part A in Figure 35 (the front panel in the middle of moving has been added for reference), and (d) is a partial enlarged view of part A in Figure 15. [Figure 37] FIG. [Figure 38] FIG. 4 is a vertical cross-sectional view of the waterproof section and its surrounding members. [Figure 39] (a) A cross-sectional view including the back surface of the roof panel, (b) a cross-sectional view of the rail, (c) a cross-sectional view including the rail, rollers, fastening material and front panel, and (d) a cross-sectional view including the rail, rollers, fastening material and front panel as seen from a different direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] 1 to 39, an expandable trailer house 1 (hereinafter referred to as the house) according to an embodiment of the present invention includes a ceiling 21, a left wall 22 in a length direction L, a right wall 23, a front wall 24 in a width direction W, a rear wall 25 in a width direction W having a door 25a, and a floor 26. The box-shaped main body 2 has an opening 29 (see Figs. 13, 19, etc.) with a rectangular opening in the side wall 22, and a framework 3 attached to the opening 29 and changeable between a stored state and an expanded state. At the rear of the opening 29, a wall 22a extends inward in the width direction W (see Fig. 6, etc.).

[0034] 6, 7, etc., the framework 3 is divided into a roof panel 31 rotatably attached to the upper side of the opening 29 in the length direction L, a floor panel 32 having a floor assembly 32a (see FIG. 37) rotatably attached to the lower side of the opening 29 in the length direction L, a left side panel 33 rotatably attached to the left side of the opening 29 in the height direction H, a right side panel 34 rotatably attached to the right side of the opening 29 in the height direction H, and a front panel 35 having a roller 35b fixed to an upper side 35a by a fastening material 35d (see FIGS. 39(c) and (d)) and a window 35c. One end of the floor panel 32 is rotatably attached to the vertical surface of the cutout 26a of the floor 26 by a hinge, as shown in FIG.

[0035] Here, the names of the left side wall 22, the right side wall 23, the front wall 24, and the rear wall 25 of the main body 2 are based not on their arrangement when the house 1 is installed, but on the direction of travel when the house 1 is towed, with the front of the travel direction being the front, the rear of the travel direction being the rear, and when looking at the house 1 from the direction of travel (see Figure 4), the right side is the right and the left side is the left.

[0036] A fixed wall 22a extends from the opening 29 of the left side wall 22 in the width direction W and serves as a free end. A left side panel 33 is attached to the fixed wall 22a with a hinge. A right side panel 34 is attached to the inner wall side of the front wall 24 with a hinge.

[0037] The upper surfaces of the left side panel 33 and the right side panel 34 are sloped to match the slope of the roof panel 31.

[0038] As shown in FIG. 36 and FIG. 39(a), the house 1 further has a rail member 4 divided into a long rail 41 and a short rail 42 shorter than the long rail 41. Two rail members 4 and two rollers 35b are exemplified, but the quantities are not limited and an appropriate number may be adopted. The load-bearing capacity of the rollers is exemplified as 300 to 600 kg. The rail member 4 is provided so as to extend in the width W direction in the expanded state. The long rail 41 is fixed to the back surface of the roof panel 31 so as to extend in the width direction in the expanded state, and the short rail 42 is made expandable in the axial direction and is fixed to a fixing member 5 provided on the main body 2 so as to extend in the width direction W, and is configured so that the long rail 41 and the short rail 42 are coaxially continuous when the roof panel 31 rotates and unfolds. When the skeleton 3 changes between the stored state and the expanded state, the rollers 35b move between the long rail 41 and the short rail 42, so that the front panel 35 moves while suspended from the coaxial rail member 4. In this embodiment, the short rail 42 has an extendable structure, and the long rail 41 and the short rail 42 are configured to be coaxially continuous when the skeleton 3 changes between the stored state and the expanded state, but as long as the continuity between the long rail 41 and the short rail 42 is maintained so that the rollers 35b of the front panel 35 can pass when the skeleton 3 changes between the stored state and the expanded state, the short rail 42 does not need to be extendable, and the long rail and the short rail do not need to be coaxial.

[0039] In the house 1, the rail member 4 is not exposed to the outside air, so that dust and the like are less likely to accumulate on the rail member 4, and the rollers 35b and the rail member 4 are less likely to wear, and the rail member 4 is less likely to rust. In addition, in the house 1, the panels 31-35 of the framework 3 are divided, and only the front panel 35 moves along the rail 4 instead of the entire framework 3, thereby reducing the weight of the moving members, and thus reducing the weight load on the rail member 4. This reduces the amount of rail member 4, resulting in a simple structure, and also improving the durability of the rollers 35b and the rail member 4, thereby realizing cost reduction.

[0040] In the house 1, each panel 31-35 of the skeleton 3 is separate and can operate independently, so that the weight load on the worker when changing the skeleton 3 between the stored state and the expanded state can be reduced. By reducing the weight of the moving members by limiting the member that moves along the rail member 4 to the front panel 35, the weight load on the rail member 4 can be reduced, and the amount of the rail member 4 can also be reduced, so that the width of the volume during expansion can be increased. Furthermore, because the roof panel 31 is separate, the height of the opening 29 can be ensured.

[0041] When viewed from the back, the floor panel 32 has an exposed floor structure 32a (see FIG. 37) for maintaining strength. Considering strength, the floor structure 32a is usually in a lattice shape, but it can also be arranged in a river shape that flows in one direction instead of a lattice shape.

[0042] Here, the names of the left side panel 33, right side panel 34, and front panel 35 of the main body 3 are based on the front view of the house in the expanded state as shown in Figure 8, and the panel located at the front is named as the front panel 35, the panel located to the left as viewed from the front as the left side panel 33, and the panel located to the right as viewed from the front as the right side panel 34.

[0043] When the jack 12 supports the floor panel 32, the jack 12 is placed on the ground, and then the jack auxiliary member 12a, which is a square timber, is placed over the jack 12, and the jack auxiliary member 12a is leveled before supporting the floor structure 32a with the jack auxiliary member 12a, thereby ensuring the levelness and strength of the floor panel. In this way, the floor structure 32a exposed on the back surface of the floor panel 32 can improve the strength of the floor and the ease of installation of the jack, but if the floor panel 32 is configured to be positioned on the outermost side in the stored state, it will be necessary to lay a waterproofing material covering the floor structure 32a from the viewpoint of waterproofing the floor panel 32, and the floor structure 32a cannot be exposed, making it difficult to position and install the jack.

[0044] In this embodiment, the roof panel 31 (the outside of the roof panel 31 is originally waterproof) can function as an outer cover for the opening 29, so that the floor structure 32a is not exposed to the outside in the stored state. Therefore, the exposed floor structure 32a can be provided on the back surface of the floor panel 32 without worrying about waterproofing, and the aesthetic appearance of the house 1 in the stored state is not marred.

[0045] Long rail 41 is fixed to the back surface of roof panel 31 (see Figures 36 and 39(a)), and short rail 42 has an extendable structure that allows the rail to be moved in and out relative to long rail 41. The outer end of long rail 41 serves as a restricting part or a blocking part to prevent front panel 35 from falling out. The inner end of short rail 42 serves as a restricting part or a blocking part to prevent front panel 35 from falling out.

[0046] With this configuration, when the house 1 changes between the stored state and the expanded state, the short rails 42 can be moved in and out of the long rails 41, allowing the front panel 35 to move smoothly. When the movement and installation of the front panel 35 is complete and the rail member 4 is disconnected as shown in Fig. 15, the long rails 41 are inclined, but when the rail members 4 are connected together to move the front panel 35 as shown in Fig. 35, the rail member 4 is not inclined. The long rails 41 are inclined in Fig. 15 because the roof panel 31 is inclined for waterproofing reasons.

[0047] When the main body 3 is in an expanded state, the width of the roof panel 31 is set longer than that of the floor panel 32, and the lower end of the front panel 35 abuts against the tip of the floor panel 32, but in some cases they may be fitted together.In addition, the floor panel 32 may be covered by an extension member (not shown) extending downward from the front panel 35, thereby creating a waterproof structure.

[0048] With this configuration, when the main body 3 of the house 1 changes between the stored state and the expanded state, the temporary support members 7 (see Figures 16, 19, etc., illustrations are omitted as appropriate) that support the roof panel 31 can be supported by the ground rather than the floor panel 32, thereby preventing the temporary support members 7 from damaging the floor panel 32 and also preventing rainwater from entering between the front panel 35 and the floor panel 32.

[0049] In the stored state, the roof panel 31 closes the opening 29 and forms a side wall of the main body 2 .

[0050] With this configuration, when the structure 3 of the house 1 is in the stored state, each panel 31 to 35 can be folded up and stored in an upright position within the main body 2, and the roof panel 31 can function as an outer cover for the opening 29.Therefore, even if the floor structure 32a is exposed on the back surface of the floor panel 32, as mentioned above, there is no problem with waterproofing the floor panel 32 in the stored state, and the aesthetic appearance of the house 1 in the stored state is not impaired.

[0051] As shown in FIG. 38 etc., the waterproof section 6 is provided between the roof panel 31 and the upper side of the opening 29. The waterproof section 6 includes a first waterproof section 61 having a protruding section 61a and a falling section 61b provided on the left side wall 22 above the upper side of the opening 29, a second waterproof section 62 having a protruding section 62a and a rising section 62b provided along the upper side of the roof panel 31, a waterproof space 65 defined by the first waterproof section 61 and the second waterproof section 62, and a waterproof packing 66 provided at the lower end of the first waterproof section 61. The waterproof packing 66 is made of soft rubber, which is crushed once and returns to its original shape by its elasticity when the roof panel 31 is in the stored state. The first waterproof section 61 is provided on the upper side opposite to the second waterproof section 62. In addition to the waterproof effect provided by the waterproof space 65 defined by the first waterproof portion 61 and the second waterproof portion 62, the waterproof packing 66 seals the gap between the first waterproof portion 61 and the second waterproof portion 62, improving watertightness.

[0052] According to this configuration, the house 1 can prevent rainwater from entering at least in the expanded state, and the waterproofing can be easily constructed, and the roof height can be made smaller without lowering the height. This reduces the burden of waterproofing measures.

[0053] The house 1 also includes a chassis 10 having wheels 8, a towing part 9, a framework 14a in a length direction L, a framework 14b in a width direction W, and an entrapment prevention member 13, as well as piles 11 for fixing the towing part 9 to the ground, a jack auxiliary member 12a, and a jack 12. The floor 26 of the main body 2 is fixed onto the chassis 10 by fastening members.

[0054] The house 1 of this embodiment has a structure in which the rail members 4 are not exposed to the outside air, so that dust and the like are less likely to accumulate on the rail members 4, and the rollers 35b and the rail members 4 are less worn, and the rail members 4 are less likely to rust. In addition, the house 1 has a front panel 35 that moves along the rail members 4, which reduces the weight load on the rail members 4 and reduces the amount of the rail members 4, resulting in a simple structure, improved durability of the rollers 35b and the rail members 4, and reduced costs.

[0055] In the house 1, each panel 31-35 of the framework 3 can be separated and operated independently, so that the weight load on the worker can be reduced when changing the framework 3 between the stored state and the expanded state. When moving the front panel 35, the weight load on the rail member 4 can be reduced, and the amount of the rail member 4 can also be reduced, so that the volume during expansion can be increased. In addition, the burden on the worker is reduced.

[0056] In this embodiment, the floor panel 32 has an exposed floor structure 32a for maintaining strength when viewed from the back. When the jack 12 supports the floor panel 32, the jack 12 is placed on the ground, the jack auxiliary member 12a, which is a square timber, is placed on top of the jack 12, the jack auxiliary member 12a is adjusted to be level, and then the floor structure 32a is supported by the jack auxiliary member 12a, thereby ensuring the levelness and strength of the floor panel.

[0057] At this time, because the floor structure 32a is exposed on the back surface of the floor panel 32, the position of the floor structure 32a can be seen when the floor panel 32 is unfolded, facilitating the positioning of the jack 12 on the floor structure 32a and improving the ease of installation of the jack, but if the floor panel 32 is configured to be positioned on the outermost side in the stored state, from the standpoint of waterproofing the floor panel 32, it is necessary to cover the floor structure 32a with a waterproof finishing material (exterior wall material, etc.) or to cover it with a sheet or the like during transportation and storage. If covered with a finishing material, the floor structure 32a cannot be exposed, making it difficult to position the jack.

[0058] In addition, because the finishing material comes into contact with the jack, there is a risk of the finishing material cracking, denting, or being damaged, and it becomes susceptible to the effects of weather such as wind and rain. If the floor members are covered with a sheet or the like, a sheet large enough to cover the trailer house is required, which makes the task of covering with the sheet a heavy burden and increases costs. In this embodiment, the roof panel 31 (the outside of the roof panel 31 is originally waterproofed) can function as the outer lid of the opening 29, so that in the stored state the floor panel 32 is not exposed to the outside, and the above-mentioned inconvenience does not occur.

[0059] In this embodiment, the jack auxiliary member 12a and its leveling are performed to make the jack installation more efficient; however, the jack auxiliary member 12a and its leveling can be omitted as appropriate. In that case, it becomes even more important that the roof panel 31 is positioned at the outermost position in the stored state in order to position the jack 12 and the floor structure 32a and to prevent damage to the waterproof finishing material by the jack 12.

[0060] A method for manufacturing an expandable trailer house will be described. This manufacturing method includes a main body manufacturing step of manufacturing a box-shaped main body 2 having a rectangular opening 29 in a longitudinal side wall 22, providing a fixing member 5 to be fixed to the main body 2, and providing a fixed wall 22a on the left side of the opening 29 in the height direction, and a framework installation step of attaching a framework 3 that can be changed between a stored state and an expanded state to the main body 2. The framework installation step includes the following steps. Note that the steps do not necessarily have to be performed in the order described.

[0061] A roller attachment step is performed in which rollers 35b are attached to upper side 35a of front panel 35.

[0062] A rail member preparation step is carried out to prepare a rail member 4 divided into a long rail 41 and a short rail 42 that is shorter than the long rail 41 and can be extended or contracted in the axial direction.

[0063] A long rail fixing step is performed in which the long rail 41 is fixed to the back surface of the roof panel 31.

[0064] A short rail fixing step is performed in which the short rail 42 is fixed to the fixing member 5 inside the main body 2 in the width direction.

[0065] In the long rail fixing step and the short rail fixing step, when the body 3 transitions between the stored state and the expanded state, the long rail 41 and the short rail 42 are fixed so that they are continuous and the rollers 35b of the front panel 35 can pass between the long rail 41 and the short rail 42. Note that in this embodiment, the telescopic short rail is extended to connect the short rail 42 to the long rail 41, but the short rail 42 does not need to be telescopic as long as continuity is obtained that allows the rollers 35b of the front panel 35 to pass through.

[0066] A side panel installation step is performed in which the left side panel 33 is rotatably attached with a hinge to the fixed wall 22a provided on the left side of the opening 29 in the height direction, and the right side panel 33 is attached with a hinge to the inner wall side of the front wall 24 located on the right side of the opening 29 in the height direction.

[0067] A floor panel installation step is performed in which the floor panel 32 is rotatably attached to the lower side of the opening 29 in the longitudinal direction L with a hinge.

[0068] A roof panel installation step is performed in which a roof panel 31 is rotatably attached to the upper longitudinal side of the opening 29 using a hinge.

[0069] A front panel installation step is performed in which the rollers 35b of the front panel 35 are installed on the short rails 42.

[0070] This manufacturing method for the expandable trailer house has the same effects as the house 1.

[0071] A method for constructing an expandable trailer house according to the present invention will now be described. This method comprises the following steps. Note that the steps do not necessarily have to be performed in the order described.

[0072] A storage step is performed to change the structure 3, which is composed of a roof panel 31, a floor panel 32, a left side panel 33, a right side panel 34, and a front panel 35 and can change between a stored state and an expanded state, into a stored state in which the roof panel 31, the floor panel 32, the left side panel 33, the right side panel 34 and the front panel 35 are arranged in order from the outside to the inside of the main body 2 in the width direction W of the main body 2 at the opening 29.

[0073] A roof panel rotating step is performed in which the roof panel 31 is rotated from the stored state to be unfolded (see Figs. 16 to 19).

[0074] A supporting step is performed in which the roof panel 31 is horizontally supported by the temporary support members 7. (See FIG. 1 (See Figures 16 to 19.)

[0075] After the jack 12 and the jack auxiliary member 12a are placed on the ground, a floor panel unfolding step is performed in which the floor panel 32 is rotated and unfolded (see Figures 20 to 23).

[0076] A continuous step is performed in which the extendable short rail 42 is extended to connect the short rail 42 and the long rail 41 coaxially. (See FIG. 23.) In this embodiment, the extendable short rail is extended to connect the short rail 42 and the long rail 41 coaxially, but as long as the continuity is such that the rollers 35b of the front panel 35 can pass through, it is not necessary to make the short rail 42 extendable or to make both rails coaxial. In the embodiment, in the state of FIGS. 19 to 23, both the short rail 42 and the long rail 41 are horizontal and coaxial, but even if only the long rail 41 is slightly inclined, it is sufficient as long as they are continuous, and both rails do not necessarily have to be coaxial.

[0077] With the roof panel 31 supported horizontally on the ground by the temporary support members 7 and the short rails 42 and long rails 41 continuous, the left side panel 33 and right side panel 34 are rotated and unfolded, a side panel unfolding step is performed (Figures 24 to 31).

[0078] A front panel unfolding step is performed in which the roller 35b of the front panel 35 is moved from the short rail 42 to the end 41a of the long rail 41, the short rail 42 is contracted to separate the short rail 42 from the long rail 41, the temporary support member 7 is removed, and the front panel 35 is abutted against or fitted to the floor panel 32 from above (see Figures 32 to 35 and 15). Note that in this embodiment, the short rail 42 and the long rail 41 are separated from each other before the temporary support member 7 is removed, but they may remain continuous depending on the configuration of the rail members.

[0079] The construction method for the expandable trailer house of the present invention has the same effects as the manufacturing method for the house 1 and the expandable trailer house.

[0080] Although the present embodiment has been described above, it goes without saying that various aspects of the present invention can be embodied by appropriately modifying or adding to the present invention without departing from the spirit of the present invention. For example, the main body 2, the opening 29, the framework 3, the roof panel 31, the floor panel 32, the left side panel 33, the right side panel 34, the front panel 35, the rail member 4, the fixing member 5, the waterproof portion 6, etc. in the present embodiment are not limited to the shapes and structures shown in the drawings, and it is possible to adopt appropriate shapes, structures, or combinations thereof. The front panel 35 may be provided with an extension member (not shown) at its tip to provide a waterproof structure. [Industrial Applicability]

[0081] The expandable trailer house has great industrial applicability because it can be put into practical use by overcoming manufacturing difficulties. [Explanation of symbols]

[0082] 1 Expandable trailer house (house) 2 Main unit 21 Ceiling 22 Left side wall 23 Right side wall 24 Front wall 25 Back wall 26 Beds 29 Opening 3 skeleton 31 Roof Panel 32 Floor Panel 33 Left side panel 34 Right side panel 35 Front Panel 35a Top 35b Lola 35c Window 4 Rail parts 41 Long Rail 42 Short Rail 5 Fixing material 6 Waterproof part 7 Temporary support member 8 wheels 9 Traction section 10 Chassis 11 stake

Claims

1. A box-shaped main body having a rectangular opening in a side wall in the longitudinal direction; A body attached to the opening and changeable between a stored state and an expanded state; A rail member, The body is A roof panel rotatably attached to an upper side of the opening in a longitudinal direction; A floor panel rotatably attached to a lower side of the opening in a longitudinal direction; Two side panels rotatably attached to both sides of the opening in the height direction; a front panel having a roller on an upper side thereof that is movable along the rail member; that it is divided into In the stored state, the roof panel, the floor panel, the side panel and the front panel are erected in the opening in the width direction of the main body from the outside to the inside of the main body in that order. The rail member is divided into a long rail and a short rail having a length shorter than that of the long rail, The long rail is fixed to the underside of the roof panel; The short rail is fixed in the body in a lateral direction, When the structure changes between the stored state and the expanded state, the roof panel rotates and unfolds, the long rail and the short rail are continuous, and the front panel is suspended from the rail member and moves. An expandable trailer house that features:

2. 2. The expandable trailer house according to claim 1, wherein the short rail has an expandable structure that enables the short rail to be extended or retracted relative to the long rail.

3. 2. The expandable trailer house of claim 1, wherein in the expanded state, the width of the roof panel is set longer than the width of the floor panel, and the lower end of the front panel abuts against or fits into the tip of the floor panel.

4. 2. The expandable trailer house of claim 1, wherein in the stored state, the roof panel closes the opening and forms a side wall of the main body.

5. 2. The expandable trailer house of claim 1, wherein a waterproof portion is provided between the roof panel and the upper edge of the opening, the waterproof portion comprising a first waterproof portion having an overhanging portion and a falling portion provided along the upper edge of the opening, and a second waterproof portion having an overhanging portion and a rising portion provided along the upper edge of the roof panel, the first waterproof portion being provided opposite and above the second waterproof portion.

6. A body manufacturing step of manufacturing a box-shaped body having a rectangular opening in a longitudinal side wall; A body installation step of attaching a body that can be changed between a stored state and an expanded state to the opening, The body installation step includes: a roller attachment step for attaching a roller to an upper edge of the front panel; a rail member preparation step of preparing a rail member to be divided into a long rail and a short rail having a length shorter than the long rail; a long rail fixing step for fixing the long rail to a rear surface of a roof panel; a short rail fixing step for fixing the short rail in the main body in the width direction; In the long rail fixing step and the short rail fixing step, when the body changes between the stored state and the expanded state, the roof panel rotates and unfolds, the long rail and the short rail are continuous, and the front panel is fixed so that the rollers can pass through. The body installation step further includes: a side panel installation step of rotatably attaching two side panels to both sides of the opening in a height direction; a floor panel installation step of rotatably attaching a floor panel to a lower side in a longitudinal direction of the opening; a roof panel installation step of rotatably attaching the roof panel to an upper side in a longitudinal direction of the opening; a front panel installation step of installing rollers of the front panel on the short rails; A method for manufacturing an expandable trailer house, comprising:

7. A box-shaped main body having a rectangular opening in a side wall in the longitudinal direction; A body attached to the opening and changeable between a stored state and an expanded state; A rail member, The body is A roof panel rotatably attached to an upper side of the opening in a longitudinal direction; A floor panel rotatably attached to a lower side of the opening in a longitudinal direction; Two side panels rotatably attached to both sides of the opening in the height direction; a front panel having a roller on an upper side thereof that is movable along the rail member; Equipped with A construction method for an expandable trailer house, in which the rail member is divided into a long rail and a short rail shorter than the long rail, the long rail is fixed to the back surface of the roof panel, and the short rail is fixed inside the main body in the width direction, a storing step of storing the roof panel, the floor panel, the side panel, and the front panel in a width direction of the main body, in a stored state in which the roof panel, the floor panel, the side panel, and the front panel are erected in order from the outside to the inside of the main body at the opening of the main body; a roof panel rotating step of rotating and unfolding the roof panel from the stored state; A supporting step of supporting the roof panel with a temporary support member; A floor panel unfolding step of rotating and unfolding the floor panel; a connecting step of connecting the short rail and the long rail; a side panel deployment step of rotating and deploying the side panel; and a front panel unfolding step of moving rollers of the front panel from the short rail to the end of the long rail while the roof panel is supported by temporary support members and the short rail and the long rail are continuous, removing the temporary support members, and forming the framework into a box frame shape. How to build an expandable trailer house.

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