Monocoque structure having function as heat insulation device and production method of monocoque structure

Abstract

To provide a monocoque structure having a function as a heat insulation device to prevent temperature of a product in a high or low temperature within a container from changing due to heat transfer to the surroundings and a production method of the monocoque structure.SOLUTION: A production method of a monocoque structure comprises steps of: separating a flat plate to four surfaces contacting in a horizontal direction and two surfaces contacting to an upper surface and a lower surface in a vertical direction of any one of four surfaces; installing a belt-like surface on the outside of each of the surfaces; arranging gaps at a plurality of positions on one of the adjacent belt-like surfaces upon assembling those; arranging on the other surface a plurality of projections having a same sectional shape with the gaps arranged on the belt-like surfaces; inserting and penetrating the projections into / through the gaps; and forming a hexagonal body by fixing the penetrated projections on the surfaces having the gaps, which makes the monocoque structure have a function that each of shell plates afford to receive stress.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an insulation device and insulation method that contribute to global warming prevention technology using carbon neural materials, in which a double structure having a monocoque structure with a vacuum inside is installed on the inside or outside of a container constituting a building, transportation equipment, etc., in order to prevent the temperature of a substance in a high or low temperature state inside the container from changing due to heat transfer to the surroundings, and bamboo is used as a support material (spacer) to prevent the surface of the double structure from deforming due to atmospheric pressure. [Background technology]

[0002] A "monocoque structure" is a structure that does not use a framework, but is hollow inside and maintains its shape by strengthening the sides like a shell. It is used for the bodies of automobiles and trains, and is also called a stressed skin structure because the structure places stress on the outer panels. In buildings, rather than supporting the building with a framework made of pillars and beams, the structure supports the entire building on a total of six sides: the four sides surrounded by the "walls" that make up the building, and the two sides above and below (floor and ceiling). For example, Patent Document 1 describes "a technology for installing multiple metal wires or wire mesh in a stainless steel semi-monocoque car body tube of a railway vehicle having a stainless steel semi-monocoque structure in which the side beams and cross beams of the frame are U-shaped cross-section members (hat-shaped cross-section members) and which increases strength against lateral impact forces without narrowing the passenger compartment space through a reinforcing structure, in order to maintain the shape of the vacuum layer between the double tubes that make up the insulation layer." Patent Document 2 describes a technology relating to an egg-shaped vehicle body structure that has a monocoque structure formed by fastening an upper body that is a one-piece molded product of a transparent thermoplastic resin composition, and a lower body and floor that are also one-piece molded products of a thermoplastic resin composition, and that is lightweight, has good visibility while driving, is easy to manufacture, and has the rigidity required for a vehicle body. Patent Document 3 describes a technology that "in order to experience the strength of a monocoque housing structure in which uniformly produced wooden panels are surface-joined together using a polymer adhesive and nailing, a model is constructed in which the column-supporting structure of a conventional wooden house is likened to the ridgeline of a rectangular parallelepiped as four columns, four ceiling beams, and four floor beams, and four rubber columns and eight beams are joined to this part. In contrast, a model showing a monocoque structure is constructed in which a thin, transparent synthetic resin film is applied to the surface of the 12 rubber structural members of the conventional structure, thereby allowing the experience of the difference between the two." The term "monocoque structure" comes from a combination of the Greek word "mono," meaning "one," and the French word "coque," meaning "shell." The ideal structure has the strength and rigidity of a closed shell, but as shown in Patent Documents 1 to 3, vehicles such as trains and automobiles have large openings such as windows and doors on the front, back, left and right, and buildings also require openings such as windows and doors, so a closed shell (a completely stressed skin structure) cannot be achieved, and so it is called a semi-monocoque structure.

[0003] Furthermore, with the spread of air conditioning and heating equipment, it has become possible to obtain a comfortable space by maintaining the temperature of the living space constant regardless of the outside air temperature, but in recent years, as the outside air temperature has been rising due to global warming, more energy is required to maintain this temperature. Furthermore, in recent years, the use of electric vehicles that do not use fossil fuels, which are believed to cause global warming, as the power source for automobiles and the like has been mandatory, but since a large amount of energy is required for heating and cooling to keep the interior space of an automobile comfortable, it is necessary to minimize the transfer of heat between the inside and outside of the automobile. The most effective way to reduce the transfer of heat between the inside and outside of a building or automobile is to make the walls, ceilings, and floors of the car body and the building a thermal insulating structure, but implementing this requires an air layer containing thermal insulating material, which increases the additional cost of materials and the installation volume. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2007-126027 A [Patent Document 2] Patent No. 6104381 [Patent Document 3] JP 2002-91294 A Summary of the Invention [Problem to be solved by the invention]

[0005] As shown in Patent Documents 1 to 3, vehicles such as trains and automobiles have large openings such as windows and doors on the front, rear, left and right sides, and buildings also require openings such as windows and doors, so they cannot be a closed shell (a completely stressed skin structure) and are therefore called semi-monocoque structures. However, there is a demand for technological development related to "an egg-shaped car body structure that is lightweight, easy to manufacture, and has the rigidity required for a car body" as described in Patent Document 2. Moreover, in recent years, clear numerical targets have been set to prevent global warming, and there is a demand for the development of energy-saving technologies for vehicles and buildings.

[0006] Therefore, the present invention aims to provide an insulation device and insulation method for a container having a monocoque structure, which has the following elements, is highly versatile, has a structure with relatively little increase in volume and weight, and is also applicable to insulation devices having a vacuum insulation structure. 1. In the opposing components of a joint in a monocoque structure made of a single material, gaps (small vertical holes) are made in multiple places on one component, and protrusions with the same cross-sectional shape as the gaps are made in multiple places on the other component.The protrusions are inserted (penetrated) into the gaps between the opposing components, and the protruding part on the opposite side is fixed to the component with the gap.This method makes it possible to accurately and firmly join the relative positions of the components that make up the monocoque structure, without the need for any components other than those that make up the monocoque structure. 2. In a monocoque structure having a sealed double-layered space, the sealed double-layered space can be filled with a material with a thermal conductivity of 1 or less and attached to the inside or outside of the container, making it possible for the material to function as an insulating device. 3. In a monocoque structure having a sealed double-layered space, by filling the sealed double-layered space with gas at a pressure of up to 300 kPa and attaching it to the inside or outside of the container, it becomes possible to obtain an even better stressed outer skin structure and have it function as an insulating device with thermal conductivity equivalent to that of air under atmospheric pressure. 4. In a monocoque structure having a sealed double-layered space, the pressure in the sealed double-layered space can be made lower than atmospheric pressure, and bamboo, which is lightweight, low-cost, has low thermal conductivity and is carbon-neutral, can be inserted inside the double-layered structure to prevent the outer skin from deforming due to external pressure. This can be used as a support (spacer) and attached to the inside or outside of the container, making it possible to use it as a vacuum insulation device. [Means for solving the problem]

[0007] When the pressure inside a sealed container is different from the atmospheric pressure, it is necessary to bond the bonding surfaces of the materials constituting the container to form a sealed space and maintain the internal pressure. There are methods using two different substances, such as using energy, using chemical energy, using mechanical energy, ultrasonic welding, and laser welding, but using these methods requires substances other than the two substances that make up the sealed space, and may also require special equipment and technology. If the sealed space is at a higher pressure than the atmospheric pressure (generally several atmospheres to several tens of atmospheres), it is necessary to use one of these methods, but in the vacuum space that is the subject of this invention, the pressure ranges from a value close to 0 Pa to about 300 kPa, so it is possible to maintain the vacuum in the sealed space using methods other than these.

[0008] The invention described in claim 1 is a monocoque structure characterized in that a single flat plate is divided into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, and these are assembled to form a sealed hexahedron, which can be given the function of allowing each outer plate to bear stress.

[0009] The invention described in claim 2 is a method for producing a monocoque structure that has the function of distributing stress on each outer panel by dividing a flat plate into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, and assembling these to form a sealed hexahedron.

[0010] The invention described in claim 3 is a monocoque structure as described in claim 1, characterized in that a flat plate is divided into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, a band-shaped face is installed on the outside of each face, and when the two are assembled, gaps are provided in multiple places on one of the adjacent band-shaped faces, and multiple protrusions having the same cross-sectional shape as the gaps provided on the band-shaped face are provided on the other face, and the protrusions are inserted and passed through the gaps and the penetrating protrusions are fixed to the face with the gaps to form a sealed hexahedron, thereby giving each outer plate the function of being able to bear stress.

[0011] The invention described in claim 4 is a method for manufacturing a monocoque structure described in claim 2, which has the function of allowing each outer panel to bear stress by dividing a flat plate into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, installing a band-shaped surface on the outside of each side, and assembling the two, providing gaps in multiple locations on one of the adjacent band-shaped surfaces, providing multiple protrusions on the other surface that have the same cross-sectional shape as the gaps provided on the band-shaped surface, inserting and penetrating the protrusions into the gaps, and fixing the penetrating protrusions to the surface with the gaps to form a sealed hexahedron.

[0012] The invention described in claim 5 is a monocoque structure as described in claim 3, in which a structure having the function of distributing stress on each outer panel by dividing a flat plate into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides and assembling these to form a sealed hexahedron, can be attached to the inside or outside of a container and have the function of an insulating device to reduce the amount of heat transferred from a high-temperature substance to a low-temperature substance when there is a temperature difference between a substance inside the container and a substance outside the container.

[0013] The invention described in claim 6 is a method for manufacturing the monocoque structure described in claim 4, which is formed by dividing a flat plate into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, and assembling these to form a sealed hexahedron, thereby giving each outer plate the ability to bear stress.The structure is attached to the inside or outside of the container, and functions as an insulating device to reduce the amount of heat transferred from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

[0014] The invention described in claim 7 is a monocoque structure as described in claim 3, in which a flat plate is divided into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, and these are assembled to form a sealed hexahedron, giving the structure the function of being able to support stress on each outer plate.By filling the inside of the structure with insulating material and attaching it to the inside or outside of a container, the monocoque structure can function as an insulating device to reduce the amount of heat transferred from high-temperature materials to low-temperature materials when there is a temperature difference between materials inside and outside the container.

[0015] The invention described in claim 8 is a method for manufacturing the monocoque structure described in claim 4, which comprises dividing a flat plate into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, assembling these to form a sealed hexahedron, and filling the inside of the structure, which has the function of being able to support stress on each outer plate, with insulating material and attaching it to the inside or outside of the container, thereby functioning as an insulating device to reduce the amount of heat transferred from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

[0016] The invention described in claim 9 is a monocoque structure as described in claim 3, in which a flat plate is divided into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, and these are assembled to form a sealed hexahedron, giving the structure the function of being able to support stress on each outer plate.By filling the inside of the structure with gas and attaching it to the inside or outside of a container, it can function as an insulating device to reduce the amount of heat transferred from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

[0017] The invention described in claim 10 is a method for manufacturing the monocoque structure described in claim 4, which comprises dividing a flat plate into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, assembling these to form a sealed hexahedron, and filling the inside of the structure with gas and attaching it to the inside or outside of the container, thereby functioning as an insulating device to reduce the amount of heat transferred from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

[0018] The invention described in claim 11 is a monocoque structure as described in claim 3, in which a flat plate is divided into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, and these are assembled to form a sealed hexahedron, giving each outer plate the function of being able to bear stress.By filling the inside of the structure with gas at a pressure higher than atmospheric pressure and attaching it to the inside or outside of the container, the strength against external forces is improved and the structure can function as an insulating device to reduce the amount of heat transferred from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

[0019] The invention described in claim 12 is a structure in which a single flat plate is divided into four faces that are in contact with each other in the horizontal direction and two faces that are in contact with the top and bottom of any of the four faces in the vertical direction, and these are assembled to form a sealed hexahedron, and the inside of the structure is given the function of being able to distribute stress to each outer plate. A method for manufacturing the monocoque structure described in claim 4, in which the structure is filled with gas at higher pressure than atmospheric pressure and attached to the inside or outside of the container, thereby improving strength against external forces and providing a function as an insulating device for reducing the amount of heat transferred from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

[0020] The invention described in claim 13 is a monocoque structure as described in claim 3, in which a flat plate is divided into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, and these are assembled to form a sealed hexahedron, giving each outer plate the function of being able to bear stress.By creating a vacuum inside the structure and inserting spacers and attaching them to the inside or outside of the container, it is possible to give the structure the function of a high-performance insulation device that reduces the amount of heat transferred from a high-temperature substance to a low-temperature substance when there is a temperature difference between a substance inside the container and a substance outside the container.

[0021] The invention described in claim 14 is a structure in which a single flat plate is divided into four faces that are in contact with each other in the horizontal direction and two faces that are in contact with the top and bottom of any of the four faces in the vertical direction, and these are assembled to form a sealed hexahedron, and the inside of the structure is given the function of being able to distribute stress to each outer plate. A method for manufacturing the monocoque structure described in claim 4, which functions as a high-performance insulation device for reducing the amount of heat transferred from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container by using a method of creating a vacuum and inserting a spacer and attaching it to the inside or outside of the container. Effect of the Invention

[0022] By using the present invention, temperature changes of the material in the container can be prevented. [Brief description of the drawings]

[0023] [Figure 1] This is an example of a monocoque structure characterized by the fact that a single flat plate is divided into four faces that join horizontally and two faces that join vertically above and below any of the four faces, and then these are assembled to form a sealed hexahedron, which can be given the function of allowing each outer panel to bear stress.

[0024] [Diagram 2]This is an example of a monocoque structure that is characterized by the fact that, when a flat plate is divided into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, a band-shaped surface is installed on the outside of each face, and when the two are assembled, gaps are provided in multiple places on one of the adjacent band-shaped surfaces, and multiple protrusions having the same cross-sectional shape as the gaps provided on the band-shaped surface are provided on the other surface, and the protrusions are inserted and penetrated into the gaps, and the penetrated protrusions are fixed to the surface with the gaps to form a sealed hexahedron, thereby giving each outer plate the function of bearing stress. In the figure, the protrusions (A) to (C) are inserted into the gaps provided on the corresponding band-shaped surfaces, and the penetrated parts are fixed to the band-shaped surface, resulting in a monocoque structure with a strong structure.

[0025] [Diagram 3] This is a three-dimensional drawing of the monocoque structure shown in Figure 2. [Industrial Applicability]

[0026] By installing the present invention in a container, it becomes possible to prevent the temperature of a substance in a high or low temperature state inside the container from changing due to heat transfer to the surroundings.

Claims

1. A monocoque structure made from a single material, characterized in that a single flat plate is divided into four faces that are in contact horizontally and two faces that are in contact above and below any of the four faces in the vertical direction, and these are assembled to form a sealed hexahedron, thereby giving each outer panel the ability to bear stress.

2. A method for producing a monocoque structure made from a single material with the function of allowing each outer panel to bear stress by dividing a flat plate into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, and then assembling these to form a sealed hexahedron.

3. 2. A monocoque structure as described in claim 1, characterized in that a flat plate is divided into four faces that are in contact horizontally and two faces that are in contact above and below any of the four faces in the vertical direction, a band-shaped surface is installed on the outside of each face, and when the two are assembled, gaps are provided in multiple locations on one of the adjacent band-shaped surfaces, and a plurality of protrusions having the same cross-sectional shape as the gaps provided on the band-shaped surface are provided on the other surface, and the protrusions are inserted and passed through the gaps, and the passed protrusions are fixed to the surface with the gaps to form a sealed hexahedron, thereby giving each outer plate the function of bearing stress.

4. 3. A method for manufacturing a monocoque structure as described in claim 2, which has the function of allowing each outer panel to bear stress by dividing a flat plate into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, installing a band-shaped surface on the outside of each face, and assembling the two, providing gaps in multiple locations on one of the adjacent band-shaped faces, providing multiple protrusions on the other face that have the same cross-sectional shape as the gaps provided on the band-shaped face, inserting the protrusions into and passing through the gaps, and fixing the penetrating protrusions to the face with the gaps to form a sealed hexahedron.

5. A monocoque structure as described in claim 3, in which a flat plate is divided into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, and these are assembled to form a sealed hexahedron, thereby giving each outer plate the function of bearing stress.By attaching this structure to the inside or outside of the container, it can function as an insulating device to reduce the amount of heat transfer from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

6. A method for manufacturing the monocoque structure described in claim 4, in which a flat plate is divided into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, and these are assembled to form a sealed hexahedron, thereby giving each outer plate the function of being able to bear stress.The structure is attached to the inside or outside of the container, and functions as an insulating device for reducing the amount of heat transfer from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

7. A monocoque structure as described in claim 3, in which a flat plate is divided into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, and these are assembled to form a sealed hexahedron, giving the structure the function of being able to support stress on each outer plate, and by filling the inside of the structure with insulating material and attaching it to the inside or outside of the container, it can function as an insulating device for reducing the amount of heat transfer from high temperature materials to low temperature materials when there is a temperature difference between materials inside the container and materials outside the container.

8. A method for manufacturing the monocoque structure described in claim 4, which comprises dividing a flat plate into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, assembling these to form a sealed hexahedron, and filling the inside of the structure, which has the function of being able to support stress on each outer plate, with insulating material and attaching it to the inside or outside of the container, thereby functioning as an insulating device for reducing the amount of heat transfer from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

9. A monocoque structure as described in claim 3, in which a flat plate is divided into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, and these are assembled to form a sealed hexahedron, giving the structure the function of allowing each outer plate to bear stress.By filling the inside of the structure with gas and attaching it to the inside or outside of a container, the structure can function as an insulating device to reduce the amount of heat transferred from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

10. A method for manufacturing the monocoque structure described in claim 4, which comprises dividing a flat plate into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, assembling these to form a sealed hexahedron, and filling the inside of the structure with gas and attaching it to the inside or outside of the container, thereby functioning as an insulating device for reducing the amount of heat transfer from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

11. A monocoque structure as described in claim 3, in which a flat plate is divided into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, and these are assembled to form a sealed hexahedron, giving the structure the function of allowing each outer plate to bear stress.By filling the inside of the structure with a gas at a pressure higher than atmospheric pressure and attaching it to the inside or outside of the container, the strength against external forces is improved and it can also function as an insulating device to reduce the amount of heat transferred from a high temperature material to a low temperature material when there is a temperature difference between a material inside the container and a material outside the container.

12. A flat plate is divided into four faces that are connected horizontally, and two faces that are connected vertically above and below any of the four faces. These are then assembled to form a sealed hexahedron, and the interior of the structure is given the function of allowing each outer panel to bear stress. A method for manufacturing a monocoque structure as described in claim 4, in which the structure is filled with gas at higher pressure than atmospheric pressure and attached to the inside or outside of the container, thereby improving strength against external forces and providing a function as an insulating device for reducing the amount of heat transfer from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

13. A monocoque structure as described in claim 3, in which a flat plate is divided into four sides that are in contact horizontally and two sides that are in contact vertically above and below any of the four sides, and these are assembled to form a sealed hexahedron, giving the structure the function of being able to support stress on each outer plate.By creating a vacuum inside the structure and inserting spacers and attaching them to the inside or outside of the container, the structure can be given the function of a high-performance insulation device that reduces the amount of heat transferred from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

14. A method for manufacturing the monocoque structure described in claim 4, which comprises dividing a flat plate into four faces that are in contact horizontally and two faces that are in contact vertically above and below any of the four faces, assembling these to form a sealed hexahedron, and using a method in which the inside of the structure having the function of being able to support stress on each outer plate is evacuated and spacers are inserted and attached to the inside or outside of the container, thereby functioning as a high-performance insulation device for reducing the amount of heat transfer from a high-temperature material to a low-temperature material when there is a temperature difference between a material inside the container and a material outside the container.

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