Space formation device

Abstract

To provide a space formation device which can easily expand / shorten an internal space, and can be easily loaded / unloaded to / from a vehicle.SOLUTION: A space formation device 100 has an inside housing part 101, an outside housing part 103, and a housing support part 105. The inside housing part 101 has an inside internal space S101 which is an internal space. The outside housing part 103 has an outside internal space S103 which is an internal space. The outside housing part 103 is positioned outside the inside housing part 101, and is fit to the inside housing part 101. A housing moving part 101d relatively moves the inside housing part 101 and the outside housing part 103, and adjusts the size of a device internal space S100 which is an internal space formed of the inside internal space and the outside internal space. The housing support part 105 supports the outside housing part 103.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a space-forming device, and more particularly to a device capable of expanding and contracting an internal space. [Background technology]

[0002] A conventional space forming device will be described using the expandable car body structure shown in Figure 16. The device comprises inner box part 13a, outer box part 13b which has no bottom and which surrounds the top and side surfaces of inner box part 13a and is substantially entirely slidably fitted onto the outside of inner box part 13a so as to be movable up and down relative to inner box part 13a, moving means 22 which are provided corresponding to each corner 25 where the side surfaces of outer box part 13b intersect and which move corner 25 up and down, interlocking mechanism 23 which interlocks with each moving means 22 to move the entire outer box part 13b up and down in a substantially horizontal state, and drive source 24 which applies a drive force to operate moving means 22 via interlocking mechanism 23, so that when outer box part 13b is moved upward, the internal space formed by outer box part 13b can be expanded above inner box part 13a.

[0003] Here, the extension / contraction control mechanism 21 having the moving means 22, the interlocking mechanism 23, and the drive source 24 will be described with reference to Fig. 17. Fig. 17 is a perspective view that schematically shows the extension / contraction control mechanism 21 for extending or contracting the body 13 by moving the outer box part 13b in the vertical direction in the automobile shown in Fig. 16. This extension / contraction control mechanism 21 is broadly composed of the moving means 22, the interlocking mechanism 23, the drive source 24, etc.

[0004] The moving means 22 are provided at four corners 25 where the side faces of the outer packet part 13b intersect, and comprise rods 26 that are threaded on their outer peripheries and extend in the vertical direction, and brackets 27 that screw into the threads on the rods 26. The brackets 27 are provided with seats 27a that support the outer packet part 13b, and the brackets 27 are integrated with the outer packet part 13b via the seats 27a. When the rods 26 of the moving means 22 are rotated, the screws on the rods 26 feed the brackets 27, and the brackets 27 can move up or down together with the outer packet part 13b depending on the direction of rotation of the rods 26. Therefore, unless the screw feed direction and feed amount of each moving means 22 are the same at each corner 25, the outer packet part 13b will not be moved up or down while remaining horizontal. Therefore, an interlocking mechanism 23 is interposed between the drive source 24 and the moving means 22 as a means for enabling the moving means 22 at each corner 25 to be interlocked and moved the same distance in the same direction with one drive source 24. In this embodiment, an electric motor that can rotate in both forward and reverse directions is used as the drive source 24, but a device other than an electric motor, such as a hydraulic cylinder, may also be used.

[0005] Interlocking mechanism 23 comprises front and rear shafts 29, each equipped with a gearbox 28 at each of the left and right ends, which is power-transmittingly connected to rod 26 of moving means 22, and shaft 31, which is power-transmittingly connected to shaft 29 via gearboxes 30 attached to the midsection of front and rear shafts 29. Shaft 31 is also power-transmittingly connected to output shaft 24a of drive source 24 via gearbox 32 attached to the midsection of shaft 31. In interlocking mechanism 23, when drive source 24 rotates, power is transmitted to rod 26 via output shaft 24a-gearbox 32-shaft 31-gearbox 30-shaft 29-gearbox 28. This causes rods 26 of each moving means 22 to rotate in the same direction by the same amount, thereby moving outer box part 13b up or down depending on the direction of rotation of drive source 24.

[0006] This provides an expandable body structure for an automobile that can expand the size of the body upward as needed, ensuring a large room inside the body (see Patent Document 1). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-108775 Summary of the Invention [Problem to be solved by the invention]

[0008] The above-mentioned expandable body structure of a car has the following points to be improved: In the above-mentioned expandable body structure of a car, the interlocking mechanism 23 is complicated and cannot be easily installed.

[0009] Furthermore, because interlocking mechanism 23 is complex, it is difficult to load and unload inner box part 13a and outer box part 13b from the body, which is an area that needs improvement.

[0010] Therefore, an object of the present invention is to provide a space forming device that can easily expand or contract the internal space, and also to provide a space forming device that can be easily loaded onto and unloaded from a vehicle, etc. [Effects of the Invention]

[0011] The means for solving the problems in the present invention and the effects of the invention are as follows.

[0012] The space forming device of the present invention comprises an inner casing portion having an inner internal space which is an internal space, an outer casing portion having an outer internal space which is an internal space, and an outer casing portion which is located outside the inner casing portion and fits into the inner casing portion, and a casing movement portion which moves the inner casing portion and the outer casing portion relative to each other and adjusts the size of the device internal space which is the internal space formed by the inner internal space and the outer internal space.

[0013] This allows the interior space to be easily expanded or contracted.

[0014] The space forming device according to the present invention is characterized in that the inner casing part does not have a surface located on the upper side, the outer casing part does not have a surface located on the lower side, and the casing moving part moves the inner casing part and the outer casing part relatively in the vertical direction.

[0015] This allows the interior space to be easily expanded or contracted in the vertical direction.

[0016] In the space forming device according to the present invention, the housing moving unit is an electric actuator.

[0017] This makes it possible to easily manufacture a space forming device whose internal space can be expanded or contracted.

[0018] The space forming device according to the present invention further includes a housing support portion that supports the outer housing portion, and the housing support portion has one end that is rotatably supported on the outer housing portion and the other end that has a support foot portion that can expand and contract relative to the one end that is rotatably supported on the outer housing portion.

[0019] This allows for a simple configuration and easy loading and unloading onto and from a vehicle, etc. Also, a space forming device can be formed that is integrated with the housing support part. Therefore, there is no need to attach or remove the housing support part, and there is no need to store the removed housing support part separately.

[0020] In the space forming device according to the present invention, the housing support portion further includes a rotation restricting portion that restricts rotation of the support leg portion beyond a predetermined angle.

[0021] This allows the support legs to be stably fixed at a predetermined angle, thereby stably supporting the space-lifting device.

[0022] In the space forming device according to the present invention, the housing support portion has a support foot abutment portion that rotates from the inside to the outside of the outer housing portion and from the outside to the inside around a rotation axis arranged along the inner lower edge of the outer housing portion, and the support foot abutment portion abuts against the support foot portion in a state where it has rotated from the inside to the outside of the outer housing portion around the rotation axis, thereby restricting rotation of the support foot portion beyond a predetermined angle.

[0023] This allows the support leg to be easily and quickly fixed at a predetermined angle simply by rotating the support leg contact portion.

[0024] In the space forming device according to the present invention, the housing support portion further has a wheel portion disposed at one end of the support foot portion.

[0025] This makes it possible to easily move the space forming device that is supported.

[0026] In the space forming device according to the present invention, the outer casing portion has a hollow rectangular parallelepiped shape, and the support legs are arranged at the four corners of the outer casing portion.

[0027] This allows the space forming device having the housing support portion to be formed compactly. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a perspective view showing a space forming device 100 which is an embodiment of a space forming device according to the present invention. [Figure 2]2A and 2B are diagrams showing the configuration of an inner housing unit 101. FIG. [Figure 3] FIG. 10 is a diagram showing the configuration of a housing moving unit 101d. [Figure 4] 2A and 2B are diagrams showing the configuration of an outer housing unit 103. FIG. [Figure 5] 2A and 2B are diagrams showing the configuration of a housing support part 105. FIG. [Figure 6] 2A and 2B are diagrams showing the configuration of a housing support part 105. FIG. [Figure 7] 10 is a diagram showing a method for expanding and contracting the internal space S100 of the space forming device 100. FIG. [Figure 8] 10 is a diagram showing a method for expanding and contracting the internal space S100 of the space forming device 100. FIG. [Figure 9] 10 is a diagram showing methods for expanding and contracting the internal space S100 of the space forming device 100. [Figure 10] 10 is a diagram showing a method for loading and unloading the space forming device 100 onto and from the vehicle M. FIG. [Figure 11] 10 is a diagram showing a method for loading and unloading the space forming device 100 onto and from the vehicle M. FIG. [Figure 12] 10 is a diagram showing a method for loading and unloading the space forming device 100 onto and from the vehicle M. FIG. [Figure 13] 10 is a diagram showing a method for loading and unloading the space forming device 100 onto and from the vehicle M. FIG. [Figure 14] 10 is a diagram showing a method for loading and unloading the space forming device 100 onto and from the vehicle M. FIG. [Figure 15] 10 is a diagram showing a method for loading and unloading the space forming device 100 onto and from the vehicle M. FIG. [Figure 16] FIG. 10 is a diagram for explaining a conventional space forming device. [Figure 17] FIG. 10 is a diagram for explaining a conventional space forming device. DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. [Example]

[0030] The space forming device according to the present invention will be described using the space forming device 100 shown in Fig. 1 as an example. The space forming device 100 can be used as a living space, and can be placed on the bed of a vehicle M such as a light truck and moved to a desired location. Note that in the following drawings, various openings such as doorways, windows, and ventilation openings formed in the space forming device 100, as well as the equipment placed in the openings, are omitted from the description.

[0031] 1. Configuration of space forming device 100 The configuration of the space forming device 100 will be explained using Figure 1. Figure 1 shows the space forming device 100 placed on the loading platform of a vehicle M in an expanded device internal space state (described later). The space forming device 100 is placed on the loading platform of the vehicle M with the rear gate, or tailgate RG, open. The space forming device 100 is formed so that it fits within the legal length when placed on the loading platform of the vehicle M. The space forming device 100 has an inner housing part 101, an outer housing part 103, and a housing support part 105.

[0032] The inner casing unit 101 has an inner internal space S101, which is an internal space. The outer casing unit 103 has an outer internal space S103, which is an internal space. The outer casing unit 103 is located outside the inner casing unit 101 and is fitted into the inner casing unit 101. The casing movement unit 101d (see FIG. 2) moves the inner casing unit 101 and the outer casing unit 103 relative to each other, and adjusts the size of the device internal space S100, which is the internal space formed by the inner internal space and the outer internal space. The casing support unit 105 supports the outer casing unit 103.

[0033] This makes it possible to easily expand or contract the internal space of the space forming device 100. Furthermore, the space forming device 100 can be easily loaded onto and unloaded from a vehicle or the like.

[0034] 1. Inner housing part 101 The configuration of the inner housing unit 101 will be described with reference to FIG. 2. The inner housing unit 101 has an inner wall portion 101a, a floor plate portion 101b, an inner column portion 101c, and a housing moving portion 101d. The inner wall portion 101a and the floor plate portion 101b form a hollow rectangular pillar shape without a ceiling. The inner wall portion 101a and the floor plate portion 101b are formed by predetermined panels. The inner wall portion 101a and the floor plate portion 101b are fixed to each other using predetermined angle materials and bolts or the like. The inner wall portion 101a and the floor plate portion 101b form an inner internal space S101, which is the internal space of the inner housing unit 101.

[0035] The inner column portion 101c is arranged at a position connecting adjacent inner wall portions 101a, i.e., at a position corresponding to the four corners of the floor panel portion 101b. The inner column portion 101c has an inner column outer plate portion 101c1 and an inner column inner plate portion 101c3. The inner column outer plate portion 101c1 and the inner column inner plate portion 101c3 form a column shape with a pentagonal cross section. The inner column outer plate portion 101c1 and the inner column inner plate portion 101c3 are formed from a predetermined metal thin plate material, for example, a stainless steel thin plate material. The inner column outer plate portion 101c1 is fixed to the inner column inner plate portion 101c3 with bolts or the like. Furthermore, the inner column inner plate portion 101c3 is fixed to the inner wall portion 101a with bolts or the like.

[0036] The housing moving unit 101d is an electrically operated actuator that can extend and retract in the vertical direction. The housing moving unit 101d is arranged in the internal space of the inner column unit 101c. The housing moving unit 101d will be explained using Figure 3. Figure 3 shows one inner column unit 101c with the inner column outer plate unit 101c1 removed. The housing moving unit 101d has a main body unit 101d1 and a movable unit 101d3. The main body unit 101d1 has an electric motor and moves the movable unit 101d3 in the vertical direction. The main body unit 101d1 is fixed to the inner column inner plate unit 101c3 and the inner wall unit 101a with bolts or the like.

[0037] The upper end of the movable part 101d3 is fixed near the top panel part 103b of the outer housing part 103. That is, by extending and contracting the movable part 101d3, the outer housing part 103 can be moved in the direction of extension and contraction of the movable part 101d3, that is, in the up and down direction.

[0038] 2.Outer housing part 103 The configuration of the outer housing unit 103 will be described with reference to FIG. 4. The outer housing unit 103 has an outer wall unit 103a, a top plate unit 103b, and an outer column unit 103c. The outer wall unit 103a and the top plate unit 103b form a hollow rectangular column shape without a floor. The outer wall unit 103a and the top plate unit 103b are formed from predetermined panels. The outer wall unit 103a and the top plate unit 103b are fixed to each other using predetermined angle bars and bolts or the like. The outer wall unit 103a and the top plate unit 103b form an outer internal space S103, which is the internal space of the outer housing unit 103.

[0039] The outer column portion 103c is arranged at a position connecting adjacent outer wall portions 103a, i.e., at a position corresponding to the four corners of the top plate portion 103b. The outer column portion 103c has an outer column outer plate portion 103c1 and an outer column inner plate portion 103c3. The outer column outer plate portion 103c1 and the outer column inner plate portion 103c3 form a hollow column shape with a hexagonal cross section. The outer column outer plate portion 103c1 and the outer column inner plate portion 103c3 are formed from a predetermined metal thin plate material, for example, a stainless steel thin plate material. The outer column outer plate portion 103c1 is fixed to the outer column inner plate portion 103c3 with bolts or the like. Furthermore, the outer column inner plate portion 103c3 is fixed to the outer wall portion 103a with bolts or the like.

[0040] 3. Housing support part 105 The housing support part 105 will be described with reference to FIG. 5. FIG. 5 shows one outer column part 103c with the outer column outer plate part 103c1 (see FIG. 4) removed. The housing support part 105 has a support foot part 105a, a wheel part 105b, a rotation support part 105c, and a support foot restricting part 105d. The support foot part 105a has a structure that allows it to extend and contract in the vertical direction. When the support foot part 105a is in its shortest state, most of it is located within the internal space of the outer column part 103c. The wheel part 105b is located at one end of the support foot part 105a. The wheel part 105b can rotate around a central axis J105a that is aligned with the extension and contraction direction of the support foot part 105a.

[0041] The rotation support part 105c is connected to one end of the support foot part 105a where the wheel part 105b is not arranged. The rotation support part 105c supports the support foot part 105a so that it can rotate around the support foot rotation axis J105c. The support foot rotation axis J105c is arranged along the direction of travel of the vehicle M at the connection position with the support foot part 105a. This allows the support foot part 105a to rotate around the support foot rotation axis J105c so as to open toward the outside of the vehicle and close toward the inside of the vehicle. The rotation support part 105c is fixed to one corner of the top plate part 103b using a bolt or the like. This means that the support foot part 105a is arranged within a projection plane facing the floor plate part 101b of the top plate part 103b when viewed from the top plate part 103b of the outer housing part 103.

[0042] The support foot restricting portion 105d has a fixed portion 105d1 and a support foot contact portion 105d3. The fixed portion 105d1 and the support foot contact portion 105d3 each have a flat plate shape. The fixed portion 105d1 is fixed using a bolt or the like to the lower end of the outer wall portion 103a of the outer housing portion 103, near the boundary with the outer column portion 103c on the inner surface. The support foot contact portion 105d3 is connected to the fixed portion 105d1 around a rotation axis J105d located at the boundary with the fixed portion 105d1. The rotation axis J105d is arranged along the inner lower edge of the outer wall portion 103a. This allows the support foot contact portion 105d3 to rotate so as to open outward from the outer wall portion 103a or close inward toward the outer wall portion 103a.

[0043] FIG. 6 shows a state in which the support foot contact portion 105d3 is rotated a predetermined angle so as to open outward from the outer wall portion 103a. With the support foot contact portion 105d3 rotated a predetermined angle so as to open outward from the outer wall portion 103a, the support foot 105a can be rotated a predetermined angle about the support foot rotation axis J105c, thereby bringing the two into contact with each other. This prevents further rotation of the support foot 105a. Furthermore, the support foot 105a, which is inclined a predetermined angle toward the inside of the outer housing portion 103, can support the outer housing portion 103, the inner housing portion 101 connected to the outer housing portion 103, and ultimately the space forming device 100. This allows the space forming device to be stably supported.

[0044] Note that the support foot contact portion 105d3 can be rotated outward to contact the support foot 105a at a position along the underside of the outer wall 103a, and further rotation of the support foot contact portion 105d3 can be restricted by the underside of the outer wall 103a, thereby more stably and firmly fixing the support foot 105a. Furthermore, with the support foot contact portion 105d3 in contact with the support foot 105a, they can be fixed together using bolts or the like. This allows the two to be fixed together more firmly.

[0045] 2. How to use the space forming device 1. How to expand or reduce the internal space Before describing a method for expanding and contracting the device internal space S100 formed by the inner casing 101 and the outer casing 103 of the space forming device 100, the state of the space forming device 100 when the device internal space S100 is expanded and contracted will be described. The outer casing 103 is located outside the inner casing 101, and the inner casing 101 and the outer casing 103 are fitted together, so that at least a portion of the inner casing 101 is housed in the outer internal space S103 of the outer casing 103. As shown in FIG. 1 , the portion of the outer internal space S103 occupied by the inner casing 101 is referred to as a first outer internal space S103a, and the portion not occupied by the inner casing 101 is referred to as a second outer internal space S103b.

[0046] The space forming device 100 can be in a minimum device internal space state, an expanded device internal space state, and a maximum device internal space state depending on the size of the device internal space S100. The minimum device internal space state corresponds to a state in which the device internal space S100 is smallest, that is, a state in which the housing movement portion 101d of the inner housing portion 101 is most shortened. In the minimum device internal space state, all or most of the outer internal space S103 of the outer housing portion 103 functions as a first outer internal space S103a occupied by the inner housing portion 101. In other words, in the minimum device internal space state, the device internal space S100 is formed almost entirely by the inner internal space S101.

[0047] On the other hand, the maximum device internal space state corresponds to a state in which the device internal space S100 is at its largest, that is, a state in which the housing movement portion 101d of the inner housing portion 101 is most extended. In the maximum device internal space state, all or most of the outer internal space S103 of the outer housing portion 103 functions as a second outer internal space S103b that is not occupied by the inner housing portion 101. In other words, in the maximum device internal space state, the device internal space S100 is formed by the inner internal space S101 and the outer internal space S103.

[0048] The expanded device internal space state corresponds to a state between the minimum device internal space state and the maximum device internal space state. In the expanded device internal space state, the device internal space S100 is formed by the inner internal space S101 of the inner housing part 101 and the second outer internal space S103b in the outer internal space S103 of the outer housing part 103.

[0049] (1) How to expand the internal space of the device Next, a method for expanding the device internal space S100 formed by the inner casing 101 and the outer casing 103 of the space forming device 100 will be described with reference to Fig. 1 and Fig. 7 to Fig. 9. As shown in Fig. 7, it is assumed that the space forming device 100 is loaded on a vehicle M in a state where the device internal space is at its minimum.

[0050] In addition, when the space forming device 100 is loaded on the vehicle M in the minimum device internal space state, the height h min is the height to the loading platform of the vehicle M plus the height h of the space forming device 100 in the minimum device internal space state. min is set to be approximately the same as the height H of the vehicle M. As a result, if the space forming device 100 placed on the loading platform is kept in the minimum device internal space state while the vehicle M is traveling, the wind pressure received while traveling can be reduced, allowing the vehicle M to travel stably.

[0051] When the space forming device 100 is loaded onto a vehicle M in the minimum device internal space state, a user who attempts to transition from the minimum device internal space state to the expanded device internal space state, that is, who attempts to move the outer housing part 103 upward, opens the left and right gates SG on the loading platform of the vehicle M as shown in Figure 8, to ensure that the wheel parts 105b of the housing support part 105 do not get caught on the gates SG when the outer housing part 103 moves upward.

[0052] Then, the user operates the housing movement part 101d of the inner housing part 101 so as to extend it. In this embodiment, the user moves the outer housing part 103 upward to a certain extent, and then closes the left and right gates SG so as to move the outer housing part 103 more safely. After that, the user operates the housing movement part 101d so as to extend it to the desired position, as shown in FIG. 1. This allows the user to put the space forming device 100 into the expansion device internal space state.

[0053] 9, the user can move the outer housing part 103 upward until the space forming device 100 reaches the maximum device internal space state. In this way, the user can form the desired device internal space S100 by the simple action of operating the housing moving part 101d.

[0054] (2) Method for reducing the internal space of the device When the space forming device 100 is loaded on the vehicle M, a user who wishes to reduce the device internal space S100 from the maximum device internal space state as shown in Fig. 9 to the expanded device internal space state as shown in Fig. 1 operates the housing movement part 101d of the inner housing part 101 to reduce it. As a result, the outer housing part 103 moves downward relative to the inner housing part 101 to a predetermined position, and the device internal space S100 is reduced.

[0055] 7, the user can move the outer housing part 103 downward until the space forming device 100 reaches the minimum device internal space state. In this way, the user can form the desired device internal space S100 by the simple action of operating the housing moving part 101d.

[0056] 2. Loading and unloading methods for vehicle M (1) Method of loading and unloading vehicle M A method for unloading the space forming device 100, which is loaded on the bed of the vehicle M in the minimum device internal space state as shown in FIG. 7, from the bed of the vehicle M will be described with reference to FIGS. 10 to 15. As shown in FIG. 7, when the space forming device 100 is loaded on the bed of the vehicle M in the minimum device internal space state, the wheel portion 105b of the housing support portion 105 located at the front is positioned between the closed gate SG of the vehicle M and the inner housing portion 101 in the minimum device internal space state. Therefore, the user opens the gate SG outward as shown in FIG. 10. In addition, the user removes the outer pillar outer plate portion 103c1 of each outer pillar portion 103c to make the housing support portion 105 usable. The user rotates the support foot 105a of the housing support part 105 located at the front so that it opens by a predetermined angle, and then closes the gate SG, so that the corresponding wheel part 105b is positioned outside the gate SG and the wheel part 105b does not get caught on the gate SG when the outer housing part 103 is moved.

[0057] Next, the user operates the housing movement portion 101d of the inner housing portion 101 so as to extend it, and moves the outer housing portion 103 upward relative to the inner housing portion 101 to a predetermined position, as shown in FIG.

[0058] As shown in Fig. 12, the user rotates the support foot 105a around the support foot rotation axis J105c in a support foot rotation direction A105c that opens outward from the outer housing unit 103. The user also extends the support foot 105a in the support foot extension direction A105a, that is, downward, until the wheel unit 105b touches the ground. The user then rotates the support foot abutment portion 105d3 of the support foot restrictor 105d in a restrictor rotation direction A105d that opens outward from the outer housing unit 103. The user then positions the support foot 105a rotated in the support foot rotation direction A105c so that it abuts against the support foot abutment portion 105d3 rotated in the restrictor rotation direction A105d. By bringing the support foot portions 105a into contact with the support foot contact portions 105d3, further rotation of the support foot portions 105a is prevented, and as a result, the four support feet 105a can firmly support the outer housing portion 103. The rotation angle of the support foot portions 105a in the support foot rotation direction A 105c until they come into contact with the support foot contact portions 105d3 is set to approximately 10 degrees.

[0059] After rotating the support foot 105a until it abuts against the support foot abutment 105d3, the user operates the housing movement unit 101d of the inner housing unit 101 in a direction to shorten it, as shown in Fig. 13, so that the inner housing unit 101 is lifted off the bed of the vehicle M. In this state, the outer housing unit 103 is stably supported by the four support feet 105a that are inclined upward and inward. Furthermore, because the inner housing unit 101 is connected to the outer housing unit 103 via the housing movement unit 101d, the inner housing unit 101 is suspended from the stably supported outer housing unit 103.

[0060] After the inner casing part 101 is lifted off the bed of the vehicle M, the user moves the vehicle M or moves the space forming device 100 from the bed of the vehicle M to a predetermined location, as shown in Fig. 14. This allows the user to unload the space forming device 100 from the bed of the vehicle M. Because the casing support part 105 has wheel parts 105b, the user can easily move the space forming device 100 that is supported by the support foot parts 105a.

[0061] After the space forming device 100 is unloaded from the bed of the vehicle M, the housing moving part 101d is extended as shown in FIG. 15, and the inner housing part 101 is lowered to the ground, thereby allowing the space forming device 100 to be placed stably on the ground.

[0062] (2) Stacking method for vehicle M The method for loading the space forming device 100 onto the loading platform of the vehicle M can be performed by reversing the method for unloading the space forming device 100 from the loading platform of the vehicle M.

[0063] In this way, the space forming device 100 can easily expand and contract the device internal space S100. Also, the space forming device 100 can easily be loaded onto or unloaded from the loading platform of the vehicle M. Furthermore, the space forming device 100 can easily be moved.

[0064] [Other embodiments] (1) Direction of expansion / contraction of the device internal space S100: In the above-described first embodiment, the space forming device 100 expands / contracts the device internal space S100 in the vertical direction, but it may also expand / contract in the horizontal direction.

[0065] (2) Housing moving unit 101d: In the first embodiment described above, the housing moving unit 101d is configured by an electric actuator, but is not limited to the example as long as it can move the outer housing unit 103 relative to the inner housing unit 101. For example, it may be a hydraulic actuator.

[0066] (3) Support foot restricting portion 105d: In the first embodiment described above, the support foot restricting portion 105d is formed by the flat fixing portion 105d1 and the support foot contact portion 105d3, but is not limited to the illustrated example as long as it can restrict the rotation of the support foot 105a. For example, the support foot 105a may be connected to the outer wall portion 103a of the outer housing portion 103 by a predetermined string-like member to restrict the rotation of the support foot 105a.

[0067] (4) Wheels 105b: In the first embodiment, the housing support 105 has the wheels 105b, but the wheels 105b may not be included. Also, the wheels 105b may be retractable from the support legs 105a.

[0068] (5) Connection of each component: In the above-described first embodiment, the inner wall 101a, the floor plate 101b, and the inner pillar 101c of the inner housing 101 are connected by bolts or the like, but the method is not limited to the illustrated one as long as they can be stably connected to each other. For example, they may be connected by using an adhesive or the like.

[0069] (6) Space forming device: In the above-mentioned embodiment 1, the space forming device 100 is shown to expand and contract the internal space S100 of the device when placed on the bed of the vehicle M, but it may be configured so that the internal space S100 of the device does not expand and contract when placed on the bed of the vehicle M, but only expands and contracts when the device is unloaded from the bed of the vehicle M and stably supported. [Explanation of symbols]

[0070] 100 Space forming device S100 Equipment internal space 101 Inner housing part S101 Inner interior space 101a Inner wall 101b Floor plate section 101c Internal column part 101c1 Inner column outer plate part 101c3 Inner column inner plate part 101d Housing moving part 101d1 Main body 101d3 Moving parts 103 Outer housing part S103 Outside interior space S103a First outer internal space S103b Second outer interior space 103a Exterior wall 103b Top plate 103c External pillar part 103c1 External column outer plate part 103c3 Outer column inner plate part 105 Housing support part 105a Support foot 105b Wheel section 105c Rotation support part 105d Support foot regulation part 105d1 Fixed part 105d3 Support foot contact part J105a center axis J105c Support foot rotation axis J105d Rotating Axis A105a Support leg extension direction A105c Support foot rotation direction A105d Rotation direction of restrictor M vehicle

Claims

1. an inner housing portion having an inner space; an outer housing part having an outer internal space that is an internal space, the outer housing part being located outside the inner housing part and fitting into the inner housing part; a housing moving unit that moves the inner housing unit and the outer housing unit relative to each other to adjust the size of an internal space of the device, which is an internal space formed by the inner internal space and the outer internal space; A space forming device having the above structure.

2. In the space forming device according to claim 1, The inner housing portion is It does not have an upper surface, The outer housing portion is It does not have an underlying surface, The housing moving unit is moving the inner housing portion and the outer housing portion relative to each other in an up-down direction; A space forming device characterized by the above.

3. In the internal space forming device according to claim 1 or claim 2, The housing moving unit is It is an electric actuator, A space forming device characterized by the above.

4. The space forming device according to claim 1, further comprising: a housing support portion that supports the outer housing portion; have The housing support portion is a support leg having one end rotatably supported on the outer housing portion and another end extendable and contractible relative to the one end rotatably supported on the outer housing portion; A space forming device having the above structure.

5. In the space forming device according to claim 4, The housing support portion further includes: a rotation restriction portion that restricts rotation of the support foot portion beyond a predetermined angle; A space forming device having the above structure.

6. In the space forming device according to claim 5, The housing support portion is a support foot abutment portion that rotates from the inside to the outside of the outer housing portion and from the outside to the inside of the outer housing portion around a rotation axis that is arranged along the inner lower edge of the outer housing portion; and The support foot contact portion is abutting on the support leg portion while rotating from the inside to the outside of the outer housing portion around the rotation axis, and restricting rotation of the support leg portion beyond a predetermined angle; A space forming device characterized by the above.

7. In the space forming device according to claim 4, The housing support portion further includes: a wheel portion disposed at one end of the support foot; A space forming device characterized by the above.

8. In the space forming device according to claim 4, The outer housing portion is It has a hollow rectangular parallelepiped shape, The support foot includes: being arranged at four corners of the outer housing part; A space forming device characterized by the above.

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