Mobility unit

Abstract

To secure high quality while suppressing a mobility unit capable of being towed and conveyed by an automobile to a size within legal regulations.SOLUTION: A mobility unit 1 is provided with a floor 10, a roof 11, and four side walls 12 to 15, and is formed in a box shape, is placed on a carriage 2, and is transported by an automobile, wherein the four side walls are covered with an exterior material 16 provided on an outdoor side surface, and a ventilation layer S is formed between the outdoor side surface of the side wall and the exterior material, the roof is provided with a sheathing roof board 31 and a support part 30 which is supported by four side walls and to which the sheathing roof board is attached, an edge part side 31a of the sheathing roof board protrudes further to the outdoor side than an outdoor side surface of the support part, and an air circulation part (32, 33, 34) which communicates an outdoor space and a ventilation layer located on a back side of an exterior material with each other in an air distributable manner is provided on the outdoor side surface of the support part within a range in which the air circulation part does not protrude further to the outdoor side than the edge part of the sheathing roof board.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to mobility units such as trailer homes. [Background technology]

[0002] Conventionally, mobility units that can be easily relocated or installed have been widely known as container houses, trailer houses, camper vans, etc. Demand for mobility units has been increasing in recent years, as they are permanently installed as residences, stores, and offices, are used as temporary accommodation facilities, and are used as temporary housing in the event of natural disasters. The trailer house described in Patent Document 1 is placed on a dolly and towed and transported by an automobile, and can be parked in a suitable location while still on the dolly. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-181421 Summary of the Invention [Problem to be solved by the invention]

[0004] When mobility units such as trailer houses are used as residences, stores, offices, temporary housing in the event of a disaster, etc., it is expected that the mobility units will be stationed in a location where they can be stationary for the medium to long term. For this reason, it is necessary to devise ways to make at least the outer shell of the mobility unit as close as possible to the performance of a normal building, thereby ensuring the quality of the mobility unit. On the other hand, because mobility units are towed and transported by automobiles, they must be sized to fit within legal regulations (Road Transport Vehicle Act, etc.) For this reason, even if you want them to perform at the same level as regular buildings, it can be difficult to adopt the same structure as regular buildings.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to enable a mobility unit that can be towed and transported by an automobile to be sized within the legal regulations while ensuring high quality.

Means for Solving the Problems

[0006] The invention according to claim 1 is, for example, as shown in FIGS. 1 to 5, a mobility unit 1 formed in a box shape and including a floor 10, a roof 11, and four side walls 12 to 15 provided between the floor 10 and the roof 11, and is placed on a carriage 2 and transported by an automobile, the four side walls 12 to 15 are covered with an exterior material 16 provided on the outdoor side surface, a ventilation layer S is formed between the outdoor side surface of the side walls 12 to 15 and the exterior material 16, the roof 11 includes a field board 31 and a support portion 30 supported by the four side walls 12 to 15 and to which the field board 31 is attached, the edge portion 31a of the field board 31 projects outside the outdoor side surface of the support portion 30, air circulation portions (32, 33, 34) that communicate the outdoor space and the ventilation layer S located on the back side of the exterior material 16 in an air-permeable manner are provided on the outdoor side surface of the support portion 30 within a range that does not project outside the edge portion 31a of the field board 31.

[0007] According to the invention described in claim 1, the edge portion 31a of the sheathing board 31 of the roof 11 protrudes outdoors beyond the outdoor side surface of the support portion 30, and an air circulation portion that communicates between the outdoor space and the ventilation layer S located on the back side of the exterior material 16 is provided on the outdoor side of the support portion 30 in a range that does not protrude outdoors beyond the edge portion 31a of the sheathing board 31, so that ventilation to the ventilation layer S located on the back side of the exterior material 16 through the air circulation portion can be performed within a short protruding dimension range of the edge portion 31a of the sheathing board 31. This makes it easier to keep the mobility unit 1 within the size of legal regulations. Furthermore, since moisture can be removed by ventilating the ventilation layer S located on the back side of the exterior material 16, the high quality of the side walls 12 to 15 and, ultimately, the mobility unit 1 can be ensured.

[0008] The invention described in claim 2 is, for example, as shown in Figs. 3 to 5, in the mobility unit 1 described in claim 1, The air flow section is A first furring strip 32 attached to the outdoor side surface of the support portion 30 in a state in which ventilation is possible; A filter portion 33 arranged on the outdoor side of the first furring strip 32; and a vent portion 34 disposed on the outdoor side of the filter portion 33. The first furring strip 32 is located directly above the ventilation layer S, the filter portion 33 is located directly above the exterior material 16, the ventilation opening portion 34 is located on the outdoor side of the exterior material 16, and the outdoor side of the ventilation opening portion 34 and the outdoor side of the edge portion 31a of the sheathing board 31 are arranged on the same vertical plane.

[0009] According to the invention described in claim 2, the air circulation section includes the first furring strip 32 attached to the outdoor side of the support section 30 in a state in which ventilation is possible, the filter section 33 arranged on the outdoor side of the first furring strip 32, and the ventilation opening section 34 arranged on the outdoor side of the filter section 33, so that the outdoor space and the ventilation layer S can be communicated to allow air to flow through the first furring strip 32, the filter section 33, and the ventilation opening section 34. Moreover, the first furring strip 32 is located directly above the ventilation layer S, the filter section 33 is located directly above the exterior material 16, the ventilation opening section 34 is located on the outdoor side of the exterior material 16, and the outdoor side of the ventilation opening section 34 and the outdoor side of the edge section 31a of the sheathing board 31 are located on the same vertical plane, so that the first furring strip 32, the filter section 33, and the ventilation opening section 34 that constitute the air circulation section do not protrude to the outdoor side beyond the outdoor side of the edge section 31a of the sheathing board 31. This allows the size of the mobility unit 1 to be kept within legal regulations while ensuring high quality.

[0010] The invention described in claim 3 is, for example, as shown in Figs. 3 to 5, in the mobility unit 1 described in claim 2, A drainage member 37 is provided on the edge portion 31a of the sheathing board 31, The draining member 37 is A fixing plate portion 37a is arranged and fixed on the upper surface of the roof board 31; A drip edge 37b is located on an extension line of the fixed plate portion 37a and protrudes slightly toward the outside from the outside side surface of the edge portion 31a of the sheathing board 31; and a hanging plate portion 37c extending downward from a boundary portion between the fixing plate portion 37a and the draining portion 37b. The hanging board portion 37c is characterized in that it extends downward from the ventilation opening portion 34 along the outdoor side of the ventilation opening portion 34 and the outdoor side of the edge portion 31a of the sheathing board 31.

[0011] According to the invention described in claim 3, the drip edge 37b is located on the extension line of the fixed plate portion 37a arranged and fixed to the upper surface of the sheathing board 31, so that water flowing on the upper surface of the roof 11 can be dropped downward from the drip edge portion 37b. Furthermore, the hanging plate portion 37c extending downward from the boundary portion between the fixed plate portion 37a and the drip edge portion 37b extends downward beyond the air vent portion 34 along the outdoor side surface of the air vent portion 34 and the outdoor side surface of the edge portion 31a of the sheathing board 31, so that the hanging plate portion 37c can prevent water from entering the air vent portion 34 while defining the position of the outdoor end portion of the air circulation portion.

[0012] The invention described in claim 4 is, for example, as shown in Figs. 3 to 5, in the mobility unit 1 described in claim 2, A second furring strip 17 is attached to the outdoor side surface of the support portion 30 and the outdoor side surfaces of the side walls 12 to 15 in a state in which ventilation is possible, and the exterior material 16 is attached to the second furring strip 17 to form the ventilation layer S, The first furring strip 32 and the second furring strip 17 are characterized by being set to have the same thickness dimension.

[0013] According to the invention described in claim 4, the second furring strips 17 are attached to the outdoor side of the support part 30 and the outdoor side of the side walls 12 to 15 in a state that allows ventilation, and the exterior material 16 is attached to the second furring strips 17 to form the ventilation layer S, and since the first furring strips 32 and the second furring strips 17 are set to have the same thickness, the first furring strips 32, which are part of the air circulation part, and the second furring strips 17 that form the ventilation layer S are set to have the same thickness. This makes it difficult for air to flow between the air circulation part and the ventilation layer S to be hindered, making it easier to keep the ventilation layer S located on the back side of the exterior material 16 dry, which contributes to ensuring high quality of the mobility unit 1.

[0014] The invention described in claim 5 is, for example, as shown in Figs. 3 to 5, in the mobility unit 1 described in claim 2, A partition material 18 for partitioning the upper end of the exterior material 16 is disposed on the upper end of the exterior material 16, A sealing material 35 is provided between the parting material 18 and the filter portion 33.

[0015] According to the invention described in claim 5, the parting material 18 is disposed on the upper end of the exterior material 16, and the sealing material 35 is provided between the parting material 18 and the filter section 33, thereby improving the watertightness between the upper end of the exterior material 16 and the air circulation section. This makes it easier to keep the ventilation layer S located on the back side of the exterior material 16 dry, which contributes to ensuring high quality of the mobility unit 1.

[0016] The invention described in claim 6 is, for example, as shown in Figs. 3 to 5, in the mobility unit 1 described in claim 1, The outdoor side surface of the support portion 30 of the roof 11 and the outdoor side surfaces of the four side walls 12 to 15 are flush with each other.

[0017] According to the invention recited in claim 6, the outdoor side surface of the support part 30 on the roof 11 is flush with the outdoor side surfaces of the four side walls 12 to 15, so that the outdoor side surface of the support part 30 and the outdoor side surfaces of the side walls 12 to 15 can be treated as the same wall surface of the mobility unit 1. This makes it less likely that problems will occur in attaching the exterior material 16 and the air circulation part, so that the exterior material 16 and the air circulation part can be attached with precision, which ultimately contributes to ensuring high quality of the mobility unit 1.

[0018] The invention described in claim 7 is, for example, as shown in Figs. 3 to 5, in the mobility unit 1 described in claim 1, The floor 10, the roof 11, and the four side walls 12 to 15 are made of architectural wood panels, The architectural wood panel is characterized in that it has a hollow structure in which a face material B is attached to both sides or one side of a frame body F formed by assembling vertical and horizontal frame materials Fm into a rectangular shape, and the hollow part is filled with insulating material.

[0019] According to the invention described in claim 7, the floor 10, roof 11, and the four side walls 12 to 15 are made of architectural wood panels, which have a hollow structure in that a face material B is attached to both sides or one side of a frame body F formed by assembling vertical and horizontal frame materials Fm into a rectangular shape, and the hollow portion is filled with insulating material, thereby improving the insulating performance of the entire mobility unit 1 and contributing to ensuring the high quality of the mobility unit 1. Effect of the Invention

[0020] According to the present invention, it is possible to ensure high quality while keeping the size of a mobility unit that can be towed and transported by automobile within legal regulations. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a perspective view showing a mobility unit. [Diagram 2] FIG. 4 is a rear view showing the mobility unit. [Diagram 3] This is a cross-sectional view showing the eaves portion at the lower end in the slope direction of the roof. [Figure 4] This is a cross-sectional view showing the eaves portion at the upper end in the slope direction of the roof. [Diagram 5] This is a cross-sectional view showing the eaves of a roof. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, the embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are subject to various limitations that are technically preferable for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples. Note that the directions in the following embodiments and illustrated examples are set solely for the convenience of explanation.

[0023] [Overview of the Mobility Unit] In Fig. 1, reference numeral 1 denotes a mobility unit. The mobility unit 1 in this embodiment is a trailer house that is placed on a dolly 2 and towed and transported by an automobile (not shown), and is placed in a suitable location while still placed on the dolly 2. In this embodiment, the mobility unit 1 is a trailer house, but is not limited to this and may be a container house that is used by being unloaded from a dolly 2. In this case, the mobility unit 1 is installed on a foundation.

[0024] Furthermore, the mobility unit 1 has passed vehicle inspection and is sized within legal regulations (Building Standards Act, Road Transport Vehicle Act) (Safety Standards Article 2 limits: vehicle width within 2.5m, vehicle length within 12m, vehicle height within 3.8m). This allows the mobility unit 1 to travel legally on public roads. However, with special permission, it may be possible to set the size larger than the limits. Furthermore, the mobility unit 1 shall meet all the criteria required for being stationed at a stationary location.

[0025] The cart 2 is also called a chassis, and includes a support base 3 to which wheels 3a are attached, and a plurality of support legs 4 provided on the support base 3 so as to be detachable. The box-shaped unit main body of the mobility unit 1 is placed on and integrated with the support base 3. In addition, a connecting portion (not shown) that protrudes forward and is connected to an automobile is integrally formed at the front end of the support base 3. The multiple support legs 4 are provided at six locations in total: the four corners of the support base 3 and two locations near the wheels 3a (the center of the support base 3 in the longitudinal direction). The support legs 4 are jack devices that allow the parts in contact with the support base 3 to be manually raised and lowered.

[0026] [Mobility unit configuration] Next, the configuration of the mobility unit 1 will be described in detail. The mobility unit 1 of this embodiment, which is a trailer house, is configured to include a dolly 2, and the box-shaped unit main body that is placed on the support base 3 of the dolly 2 will be described below.

[0027] As shown in Figures 1 to 5, the unit body is formed in a box shape with an outer shell consisting of a floor 10 placed on and integrated with a support base 3, a roof 11, and four side walls 12 to 15 provided between the floor 10 and the roof 11. Such a unit body is formed in a rectangular parallelepiped shape, being long in one direction (front-rear direction) and short in the other direction (left-right direction).

[0028] The floor 10, roof 11, and four side walls 12 to 15 are made of architectural wood panels used in the so-called panel construction method, which refers to a construction method in which building components such as walls, floors, and roofs are made into panels in advance at a factory, and then these panels are assembled at the construction site to construct the building. Architectural wood panels have a hollow structure in which a facing material B is attached to one or both sides of a frame body F, which is made up of vertical and horizontal frame materials Fm assembled into a rectangular shape, and the hollow part is filled with a fiber-based or foam-based insulating material (not shown). In this embodiment, architectural wood panels are used for the floor 10, roof 11, and four side walls 12-15 that form the outer shell of the mobility unit 1, and the mobility unit 1 is formed by a panel construction method, but this is not limited to this, and the mobility unit 1 may also be formed based on other building construction methods such as the frame construction method, the wall construction method, the two-by-four construction method, etc.

[0029] The floor 10 is long in one direction (front-rear direction) and short in the other direction (left-right direction) to form a rectangle in a plan view. A floor finishing material (e.g., flooring material) is appropriately provided on the upper surface to form the floor surface in the space within the mobility unit 1. Such a floor 10 is constructed from a number of architectural wood panels. Additionally, side walls 12 to 15 are erected and fixed on the outer periphery of the floor 10 on all four sides.

[0030] The roof 11 is long in one direction (front-rear direction) and short in the other direction (left-right direction), forming a rectangle in a plan view. A ceiling material (for example, a decorative ceiling board material) is appropriately provided on the underside to form a ceiling surface in the space within the mobility unit 1. Furthermore, the roof is a one-sided slope roof, with one side in the short direction (right side) being higher and the opposite side (left side) being lower. This allows rainwater to be guided to one side. In addition, as will be described later, an entrance / exit 15a is provided on the right side of the unit body, so that rainwater can be prevented from flowing into the entrance / exit 15a. Since the roof 11 is sloped in this way, the ceiling of this embodiment is also a sloped ceiling that slopes to one side, but this is not limited to this, and a horizontal ceiling made of rafters, ceiling materials, etc. may be formed.

[0031] Such a roof 11 is composed of a plurality of architectural wooden panels. Also, a roofing material 11a (for example, galvalume steel sheet (registered trademark)) is provided on the surface of the roof 11. That is, the architectural wooden panels that make up the roof 11 are configured such that a frame body F made up of vertical and horizontal frame materials Fm serves as a support part 30, and a surface material B provided on the upper surface of the support part 30 serves as a sheathing board 31. Furthermore, the roof 11 is placed on and fixed to the upper ends of the four side walls 12 to 15, and protrudes to the outdoors by a predetermined dimension beyond the outdoor faces of the four side walls 12 to 15. The joints between the roof 11 and the four side walls 12 to 15 will be described in detail later.

[0032] The four side walls include a first side wall 12 , a second side wall 13 , a third side wall 14 , and a fourth side wall 15 . The first side wall 12 is provided on one end side (front end side) of the floor 10 in the length direction. The second side wall 13 is provided on the other end side (rear end side) of the floor 10 in the length direction. The third side wall 14 is provided between one end (left end) of the first side wall 12 in the width direction and one end (left end) of the second side wall 13 in the width direction. The fourth side wall 15 is provided between the other end portion (right end portion) of the first side wall 12 in the width direction and the other end portion (right end portion) of the second side wall 13 in the width direction. The first side wall 12 and the second side wall 13 form the front and rear surfaces of the unit body, respectively, and have a short width dimension (dimension in the left-right direction). The third side wall 14 and the fourth side wall 15 form the left and right surfaces of the unit body, respectively, and have a long width dimension (dimension in the front-rear direction). Each of the four side walls 12 to 15 is made up of a plurality of architectural wood panels. Exterior materials (e.g., galvalume steel sheets or siding materials) are provided on the surfaces of the four side walls 12 to 15, and interior materials (e.g., gypsum boards) are provided on the indoor side, and wall finishing materials (e.g., wallpaper) are applied. The interface between the roof 11 and the four side walls 12 to 15 will be described in detail later.

[0033] In the third side wall 14, an opening window (not shown) that can be opened and closed as a waist-high window with a lower end located above the floor 10, and a fixed window 14b that cannot be opened and closed are provided side by side. Both the opening window and the fixed window 14b are glass windows.

[0034] The fourth side wall 15 is formed with a doorway 15a with a fitting, the lower end of which is approximately the same height as the floor 10, and the upper end of which is close to the roof 11. The fourth side wall 15 is also provided with a fixed window 15b set at the same height as the doorway 15a, side by side with the doorway 15a. The fitting of the doorway 15a and the fixed window 15b are both glass fittings and glass windows (glass walls).

[0035] [Regarding the joints between the roof and the four side walls] FIG. 3 shows a state in which the lower end portion in the slope direction of the roof 11 is placed on the third side wall 14. FIG. 4 shows a state in which the lower end portion in the slope direction of the roof 11 is placed on the fourth side wall 15. 5 shows the state in which the ridge portion on the rear side of the roof 11 is placed on the second side wall 13. The ridge portion on the front side of the first side wall 12 is placed on the second side wall 13, but as this is shown symmetrically to the case of the second side wall 13, illustrations and detailed explanations are omitted.

[0036] A first slope adjustment member 20, which is a beam for setting the angle (slope) of the roof 11, is fixed to the upper end surface of the third side wall 14. The first slope adjustment member 20 is a square timber processed into a trapezoidal shape when viewed in cross section (end view) in the longitudinal direction, and is arranged so that its upper surface is inclined.

[0037] A first eaves girder 21 is fixed to the outdoor side of the lower end of the roof 11 in the gradient direction, forming a vertical plane continuous with the outdoor side of the third side wall 14. The first eaves girder 21 is made by processing a square timber into a trapezoidal shape when viewed in cross section in the longitudinal direction (end view), and is arranged so that the upper surface is an inclined surface and the outdoor side is a vertical surface.

[0038] The first slope adjustment member 20 and the first eaves end girder 21 are joined together to form an integrated structure. The exterior sides of the first slope adjustment member 20 and the first eaves end girder 21 are flush with each other. No gap is formed between the exterior side of the first slope adjustment member 20 and the exterior side of the first eaves end girder 21.

[0039] A second slope adjustment member 22, which is a beam for setting the angle (gradient) of the roof 11, is fixed to the upper end surface of the fourth side wall 15. The second slope adjustment member 22 is a square timber processed into a trapezoidal shape when viewed in cross section (end view) in the longitudinal direction, and is arranged so that its upper surface is inclined. The angle of the upper surface is set to be equal to the angle of the upper surface of the first slope adjustment member 20. The height position of the second gradient adjusting member 22 is higher than the height position of the first gradient adjusting member 20. Therefore, the fourth side wall 15 itself is also adjusted in height or is formed with a long vertical dimension, so that the height position of the upper end portion is higher than the third side wall 14.

[0040] A second eaves girder 23 is fixed to the outdoor side of the upper end of the roof 11 in the gradient direction, forming a vertical plane continuous with the outdoor side of the fourth side wall 15. The second eaves girder 23 is made by processing a square timber into a trapezoidal shape when viewed in cross section in the longitudinal direction (end view), and is arranged so that the upper surface is an inclined surface and the outdoor side is a vertical surface.

[0041] The second slope adjustment member 22 and the second eaves end girder 23 are joined together to form an integrated structure. The exterior sides of the second slope adjustment member 22 and the second eaves end girder 23 are flush with each other. No gap is formed between the exterior side of the second slope adjustment member 22 and the exterior side of the second eaves end girder 23.

[0042] A third slope adjustment member 24, which is a beam for determining the angle (slope) of the roof 11, is fixed to the upper end surface of the second side wall 13. The third slope adjustment member 24 is a square timber processed into a trapezoidal shape when viewed from a side direction perpendicular to the longitudinal direction, and is arranged so that the upper surface is an inclined surface and both end surfaces in the longitudinal direction are vertical surfaces. A gradient adjuster (third gradient adjuster 24) having a similar shape is also provided on the upper end surface of the first side wall 12.

[0043] The first eaves girder 21 and the second eaves girder 23 are respectively arranged to span between the third slope adjustment members 24 provided on the upper end surfaces of the first side wall 12 and the second side wall 13. The height position of the third gradient adjusting member 24 is higher than the height positions of the first gradient adjusting member 20 and the second gradient adjusting member 22. Therefore, the first side wall 12 and the second side wall 13 are also adjusted in height or are formed with a long vertical dimension, so that the height position of their upper ends is higher than the upper end of the third side wall 14.

[0044] [Air flow structure] In the mobility unit 1 configured as described above, at the joints between the roof 11 and the four side walls 12-15, an air circulation structure is adopted that is necessary to remove moisture from the four side walls 12-15 and keep them dry, as shown in Figures 3 to 5.

[0045] The four side walls 12-15 are covered with exterior material 16 provided on the outdoor side. To explain in more detail, a moisture-permeable waterproof sheet 19 is attached to the outdoor side of each of the side walls 12-15, and multiple furring strips are attached on top of that. Then, the exterior material 16 is attached so as to span the outdoor sides of the multiple furring strips. The spaces between the exterior material 16 thus attached and each of the side walls 12 to 15 form ventilation layers S through which air can circulate, making it easier to keep the outdoor surfaces of the side walls 12 to 15, which are prone to condensation, dry. The moisture-permeable waterproof sheet 19 is attached from the exterior side of each of the side walls 12 to 15 to the underside of the edge portion of the roofing board 31 (surface material B).

[0046] The multiple furring strips may be either vertical or horizontal. However, among the multiple furring strips, the furring strip 17 (second furring strip 17) provided along the upper end of the exterior material 16 is a horizontal furring strip, and is capable of supporting the upper end of the exterior material 16. Such second furring strips 17 are provided along the upper end of the exterior material 16, and therefore need to be attached in a state that allows ventilation. In this embodiment, a ventilation furring strip having a plurality of recessed grooves (which may be through holes) formed in the vertical direction is used as the second furring strips 17, thereby allowing ventilation in the vertical direction. However, this is not limited to this, and multiple second furring strips 17 may be arranged with horizontal gaps between them, and the spaces between adjacent second furring strips 17 may be used as ventilation holes.

[0047] A parting material 18 is provided at the upper end of the exterior material 16 to view the upper end of the exterior material 16. This parting material 18 is an extrusion molded product formed in an inverted J shape in cross section, and is provided so as to cover the upper end of the exterior material 16. In addition, the inner board portion of the trim material 18 is fixed to the outdoor side of the second furring strip 17. The outdoor facing board portion of the trim material 18 is treated to be watertight against the upper end surface of the exterior material 16 to maintain watertightness. Although not shown, a dripping material is provided at the lower end of the exterior side of each of the side walls 12 to 15 so that rainwater running over the surface of the exterior material 16 can be guided downward.

[0048] As described above, the roof 11 is constructed of architectural wood panels, and in this embodiment, the facing material B functions as a sheathing board 31 that serves as a base for the roof material 11a. In addition, the frame body F and the first eaves end beam material 21, the second eaves end beam material 23, and the third slope adjustment material 24 attached to the outdoor side of the frame body F function as a support part 30 that supports the sheathing board 31. In addition, the edge portion 31a of the sheathing board 31 protrudes toward the outdoor side beyond the outdoor side surface of the support portion 30. The protrusion dimension is set to about 110 to 120 mm from the center line of each side wall 12 to 15, and the protrusion dimension from the outdoor side surface of the support portion 30 is set to about 60 to 70 mm. The protrusion dimension of the exterior material 16 from the outdoor side surface is shorter, set to about 20 to 30 mm. In other words, the roof 11 of this embodiment has almost no eaves or overhang.

[0049] An air circulation section that allows air to flow between the outdoor space and the ventilation layer S is provided on the outdoor side of the support section 30 (first eaves end girder member 21, second eaves end girder member 23, third slope adjustment member 24) in a range that does not protrude outdoors beyond the edge of the sheathing board 31. In other words, the air circulation section is provided in a range of about 60 to 70 mm.

[0050] The air flow section includes a first furring strip 32 attached to the outdoor side of the support section 30 in a state allowing ventilation, a filter section 33 arranged on the outdoor side of the first furring strip 32, and an air vent section 34 arranged on the outdoor side of the filter section 33. The first furring strip 32 is located directly above the ventilation layer S, the filter portion 33 is located directly above the exterior material 16, and the ventilation opening portion 34 is located on the outdoor side of the exterior material 16. The first furring strip 32 and the second furring strip 17 are set to have the same thickness dimension. In addition, the air circulation portion is formed long and aligned along the longitudinal direction of the first eaves end girder 21, the second eaves end girder 23, and the third slope adjustment member 24.

[0051] In this embodiment, a ventilation furring strip having a plurality of grooves is used as the first furring strip 32. The plurality of grooves are oriented toward the filter part 33, allowing ventilation between the filter part 33 and the first furring strip 32. However, the first furring strips 32 are not limited to this, and multiple first furring strips 32 may be arranged with horizontal gaps between them, and the spaces between adjacent first furring strips 32 may be used as ventilation holes.

[0052] The filter section 33 is a porous member having a large number of holes formed therein that communicate between the first furring strip 32 and the ventilation opening section 34, and can prevent the intrusion of rainwater, dust, insects, etc. while ensuring a sufficient amount of ventilation. In this embodiment, for example, Eaves Benz (registered trademark) is used.

[0053] The ventilation opening 34 refers to the outdoor side portion of the cylindrical portion 34a formed in a square tube shape. The cylindrical portion 34a has a function of holding the filter portion 33. In other words, the first furring strip 32 side of the cylindrical portion 34a serves as a holding portion for the filter portion 33, and the outdoor side serves as the ventilation opening 34. The tubular portion 34a has ventilation holes formed in the lower plate portion of the ventilation opening portion 34. Many ventilation holes are formed at intervals in the longitudinal direction of the tubular portion 34a. The holding portion of the filter portion 33 in the tubular portion 34a has many ventilation holes formed in the plate portion on the first furring strip 32 side. This ensures an air circulation path from the outdoor space to the ventilation layer S. The cylindrical portion 34a has a fixing plate portion 34b formed integrally with the lower end of the plate portion on the first furring strip 32 side, and this fixing plate portion 34b is fixed to the first furring strip 32. This allows the cylindrical portion 34a to be fixed to the first furring strip 32, so that the filter portion 33 and the ventilation hole portion 34 can also be arranged side by side with the first furring strip 32.

[0054] In addition, the outdoor side of the vent hole 34 (i.e., the cylindrical portion 34a) and the outdoor side of the edge portion 31a of the sheathing board 31 are disposed on the same vertical plane. Therefore, the air circulation portion is provided in a range that does not protrude beyond the edge portion 31a of the sheathing board 31 to the outdoor side.

[0055] In addition, a sealing material 35 is provided between the lower surface of the holding portion of the tubular portion 34a that holds the filter portion 33 and the upper surface of the trim material 18, thereby preventing water from entering beyond the trim material 18.

[0056] Furthermore, roofing 36 is applied to the upper surface of the sheathing board 31, and the terminal portion of this roofing 36 covers the outdoor side of the vent portion 34 (i.e., the cylindrical portion 34a). A water drainage member 37 for the eaves is provided on the end edge portion 31a of the sheathing board 31 from above the roofing 36.

[0057] The drain member 37 is made by bending a metal plate, and includes a fixed plate portion 37a, a drain portion 37b, and a hanging plate portion 37c. The fixing plate portion 37a is disposed on the upper surface of the edge portion 31a of the sheathing board 31, and is fixed thereto by a fixing material such as a screw. The drip edge 37b is located on an extension of the fixed plate portion 37a, and protrudes slightly toward the outdoor side beyond the outdoor side surface of the edge portion 31a of the sheathing board 31. The protruding dimension is set to 10 mm or less. The hanging plate portion 37c extends downward from the boundary between the fixed plate portion 37a and the drip edge portion 37b. The extension dimension is about 60 mm. The hanging plate portion 37c extends downward from the ventilation opening portion 34 along the outdoor side of the ventilation opening portion 34 (cylindrical portion 34a) and the outdoor side of the edge portion 31a of the sheathing board 31, which are arranged on the same vertical plane (vertical surface). The terminal portion of the roofing 36 is sandwiched between the hanging plate portion 37c and the ventilation opening portion 34 and the edge portion 31a of the sheathing board 31.

[0058] The roof material 11 is placed on top of a roofing 36 and a water drainage member 37 which is layered and fixed on top of the roofing 36, and the terminal portion of the roof material 11a is arranged so as to be hooked onto the water drainage portion 37b.

[0059] When the air flow structure configured as described above is adopted in the joints between the roof 11 and the four side walls 12 to 15, air can flow between the outdoor space and the ventilation layer S. For example, when air is taken into the tubular portion 34a through the multiple ventilation holes in the ventilation opening portion 34, the air flows through the filter portion 33 toward the first furring strip 32 side. The filter section 33 can prevent the intrusion of rainwater, dust, insects, etc., so that only air flows into the first furring strip 32 side. After passing through the multiple grooves in the first furring strip 32, the air also passes through the multiple grooves in the second furring strip 17 and flows into the ventilation layer S. The air that has flowed into the ventilation layer S is discharged again to the outdoor space from between the lower end of the exterior material 16 and the lower ends of each of the side walls 12 to 15. Note that a filter member that exerts a function similar to that of the filter section 33 may be provided between the lower end of the exterior material 16 and the lower ends of each of the side walls 12 to 15. In this manner, air flows through the ventilation layer S behind the exterior material 16, making it possible to remove moisture from the outdoor facing surfaces of the four side walls 12 to 15, which are prone to condensation, and keep them dry.

[0060] [About the effects] According to this embodiment, the following excellent effects are obtained. That is, the edge portion 31a of the sheathing board 31 of the roof 11 protrudes to the outdoor side beyond the outdoor side surface of the support portion 30, and an air circulation portion that communicates the outdoor space with the ventilation layer S located on the back side of the exterior material 16 is provided on the outdoor side of the support portion 30 in a range that does not protrude to the outdoor side beyond the edge portion 31a of the sheathing board 31, so that ventilation to the ventilation layer S located on the back side of the exterior material 16 through the air circulation portion can be performed within the range of a short protruding dimension at the edge portion 31a of the sheathing board 31. This makes it easier to keep the mobility unit 1 within the size of the legal regulations. Furthermore, since moisture can be removed by ventilating the ventilation layer S located on the back side of the exterior material 16, the high quality of the side walls 12 to 15 and, ultimately, the mobility unit 1 can be ensured.

[0061] In addition, the air circulation section includes the first furring strip 32 attached to the outdoor side of the support section 30 in a state in which ventilation is possible, the filter section 33 arranged on the outdoor side of the first furring strip 32, and the ventilation opening section 34 arranged on the outdoor side of the filter section 33, so that the outdoor space and the ventilation layer S can communicate with each other in a manner that allows air to flow through the first furring strip 32, the filter section 33, and the ventilation opening section 34. Moreover, the first furring strip 32 is located directly above the ventilation layer S, the filter section 33 is located directly above the exterior material 16, the ventilation opening section 34 is located on the outdoor side of the exterior material 16, and the outdoor side of the ventilation opening section 34 and the outdoor side of the edge section 31a of the sheathing board 31 are located on the same vertical plane, so that the first furring strip 32, the filter section 33, and the ventilation opening section 34 that constitute the air circulation section do not protrude to the outdoor side beyond the outdoor side of the edge section 31a of the sheathing board 31. This makes it possible to ensure high quality while keeping the size of the mobility unit 1 within legal regulations.

[0062] In addition, since the water dripping portion 37b is located on the extension line of the fixed plate portion 37a arranged and fixed to the upper surface of the sheathing board 31, water flowing on the upper surface of the roof 11 can be dropped downward from the water dripping portion 37b. Furthermore, the hanging plate portion 37c extending downward from the boundary between the fixed plate portion 37a and the water dripping portion 37b extends downward beyond the air vent portion 34 along the outdoor side surface of the air vent portion 34 and the outdoor side surface of the edge portion 31a of the sheathing board 31, so that the hanging plate portion 37c can prevent water from entering the air vent portion 34 while defining the position of the outdoor end portion of the air circulation portion.

[0063] In addition, the second furring strips 17 are attached to the outdoor side of the support part 30 and the outdoor side of the side walls 12 to 15 in a state that allows ventilation, and the exterior material 16 is attached to the second furring strips 17 to form the ventilation layer S, and since the first furring strips 32 and the second furring strips 17 are set to the same thickness, the first furring strips 32, which are part of the air circulation part, and the second furring strips 17 that form the ventilation layer S are set to the same thickness. This makes it difficult for air to flow between the air circulation part and the ventilation layer S to be impeded, making it easier to keep the ventilation layer S located on the back side of the exterior material 16 dry, which contributes to ensuring the high quality of the mobility unit 1.

[0064] In addition, since the parting material 18 is disposed on the upper end of the exterior material 16 and the sealing material 35 is provided between the parting material 18 and the filter section 33, it is possible to improve the watertightness between the upper end of the exterior material 16 and the air circulation section. This makes it easier to keep the ventilation layer S located on the back side of the exterior material 16 dry, which contributes to ensuring high quality of the mobility unit 1.

[0065] In addition, because the outdoor side surface of support part 30 on roof 11 is flush with the outdoor side surfaces of the four side walls 12-15, these outdoor side surfaces of support part 30 and the outdoor side surfaces of side walls 12-15 can be treated as the same wall surface of mobility unit 1. This makes it less likely that problems will occur when attaching exterior material 16 and the air circulation part, so that exterior material 16 and the air circulation part can be attached with precision, which ultimately contributes to ensuring high quality of mobility unit 1.

[0066] In addition, the floor 10, roof 11, and the four side walls 12 to 15 are made of architectural wood panels, which have a hollow structure in that a face material B is attached to both sides or one side of a frame body F, which is made up of vertical and horizontal frame materials Fm assembled into a rectangular shape, and the hollow part is filled with insulating material, which improves the insulating performance of the entire mobility unit 1 and contributes to ensuring the high quality of the mobility unit 1.

[0067] In recent years, there has been a demand for the realization of a decarbonized society through the promotion of carbon neutrality, which reduces carbon dioxide emissions to virtually zero, and for the achievement of the SDGs (Sustainable Development Goals), and the construction industry is also working to build buildings out of wood, which produces less carbon dioxide. The mobility unit 1 of this embodiment has an outer shell made of architectural wood panels, so it can contribute to the realization of a decarbonized society through the promotion of carbon neutrality and the achievement of the SDGs. [Explanation of symbols]

[0068] 1 Mobility Unit 11. Roof 12 First side wall 13 Second side wall 14 Third side wall 15 Fourth side wall 16 Exterior materials 17 Second furring strip 18 Trim 19 Breathable waterproof sheet 20 First gradient adjuster 21 First eaves beam 22 Second gradient adjuster 23 Second eave girder material 24 Third gradient adjuster 30 Support part 31 Field board 31a Edge 32 First furring strip 33 Filter section 34 Ventilation hole 34a Cylindrical part 34b Fixed plate part 35 Sealant 36 Roofing 37 Draining material S Breathable layer

Claims

1. A mobility unit having a box shape including a floor, a roof, and four side walls provided between the floor and the roof, and being placed on a cart and transported by a vehicle, The four side walls are covered with exterior materials provided on the outdoor side, A ventilation layer is formed between the exterior surface of the side wall and the exterior material, The roof includes a sheathing board and a support portion supported by the four side walls and to which the sheathing board is attached, The edge portion of the roofing board protrudes to the outdoor side beyond the outdoor side surface of the support portion, A mobility unit characterized in that an air flow section is provided on the outdoor side of the support section, which connects the outdoor space to the ventilation layer located on the back side of the exterior material in an air-permeable manner, but does not protrude outdoors beyond the edge of the subfloor.

2. 2. The mobility unit according to claim 1, The air flow section is A first furring strip attached to an outdoor side surface of the support portion in a state in which ventilation is possible; A filter portion arranged on the outdoor side of the first furring strip; A vent portion disposed on the outdoor side of the filter portion, A mobility unit characterized in that the first furring strip is located directly above the ventilation layer, the filter portion is located directly above the exterior material, the ventilation port portion is located on the outdoor side of the exterior material, and the outdoor side of the ventilation port portion and the outdoor side of the edge portion of the subfloor are arranged on the same vertical plane.

3. 3. The mobility unit according to claim 2, A drainage member is provided at the edge portion of the roofing board, The draining member is A fixing plate portion that is arranged and fixed on an upper surface of the roofing board; A drip edge portion located on an extension line of the fixed plate portion and protruding slightly toward the exterior side from the exterior side surface of the edge portion of the sheathing board; A hanging plate portion extending downward from a boundary portion between the fixed plate portion and the dripping portion, A mobility unit characterized in that the hanging board portion extends downwardly below the ventilation opening portion along the outdoor side of the ventilation opening portion and the outdoor side of the edge portion of the subfloor.

4. 3. The mobility unit according to claim 2, A second furring strip is attached to the outdoor side surface of the support portion and the outdoor side surface of the side wall in a state in which ventilation is possible, and the exterior material is attached to the second furring strip to form the ventilation layer, A mobility unit characterized in that the first furring strip and the second furring strip are set to have equal thickness dimensions.

5. 3. The mobility unit according to claim 2, A trim material for trimming the upper end of the exterior material is disposed at the upper end of the exterior material, A mobility unit characterized in that a sealing material is provided between the trim material and the filter portion.

6. 2. The mobility unit according to claim 1, A mobility unit characterized in that the outdoor side surface of the support part on the roof and the outdoor side surfaces of the four side walls are flush with each other.

7. 2. The mobility unit according to claim 1, The floor, the roof, and the four side walls are made of architectural wood panels, The architectural wood panel is a mobility unit characterized in that it has a hollow structure with a facing attached to both or one side of a frame body made of vertical and horizontal frame members assembled into a rectangular shape, and the hollow part is filled with insulating material.

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