Bearing wall panel of heat insulating material with finished wall which can be easily constructed and disassembled
The development of lightweight, insulating load-bearing wall panels with integrated structural strength simplifies manufacturing, reduces waste, and accelerates construction, ensuring high earthquake resistance and ease of restoration.
Patent Information
- Application Number
- JP2024118602
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2026-02-05
AI Technical Summary
Existing load-bearing wall panels are complex to manufacture, heavy, generate waste during demolition, and require multiple construction steps due to the use of adhesives and screws, leading to potential structural weakness and prolonged construction times.
A load-bearing wall panel made entirely of insulating material with integrated structural strength, lightweight design, and easy assembly, eliminating the need for additional components and simplifying the manufacturing process while allowing for easy disassembly and recycling.
The panels are lightweight, easy to assemble, reduce waste, and shorten construction time, providing high earthquake resistance and ease of restoration, while maintaining thermal insulation and structural integrity, aligning with traditional architectural aesthetics.
Smart Images

Figure 2026017702000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention provides a bearing wall panel made entirely of insulating material, which has high thermal insulation, high toughness and high durability, and is suitable for constructing and dismantling walls of conventional wooden buildings, and which has been pre-finished. [Background technology]
[0002] In Patent Document 1, at (0032), a structural surface material 5 and a heat insulating panel 6 are bonded together to form a heat insulating earthquake-resistant panel.
[0003] In Patent Document 1, (0035), an integrated heat insulating earthquake-resistant panel is directly fixed to two pillars 4.
[0004] In Patent Document 2, from (0005) to (0013), a heat insulating board 6 is formed by sandwiching a low-foaming urethane board 5 and pressure-molded paper boards 3 and 4 together.
[0005] In Patent Document 2, at (0014), a panel is fixed directly to a pillar with a metal plate 7.
[0006] In Patent Document 3, (0016) shows that an interior finish is applied separately from the panel. [Prior art documents] [Patent documents]
[0007] [Patent Document 1] Patent 7257721 [Patent Document 2] Patent Publication No. 08-302860 [Patent Document 3] Patent Publication No. 2016-205118 Summary of the Invention [Problem to be solved by the invention]
[0008] The bearing wall panels are constructed by combining both heat insulating members and members that provide structural strength, but in this case the manufacturing process is complicated, the weight is heavy, and the production equipment is complicated. Furthermore, since adhesives and screws are frequently used, a lot of waste is generated when the building is dismantled.
[0009] Because the load-bearing wall panels are fastened to the wooden shaft with metal fittings, etc., if a certain stress is exceeded, there is a high possibility that breaks will occur in both the load-bearing panel and the wooden shaft, and the toughness is also weak.
[0010] Unless interior and exterior wall finishes are added to the load-bearing wall panels, the building will not function as a functioning building. Therefore, these additional steps increase the number of construction steps, making it impossible to shorten the construction period. Furthermore, because screws and adhesives are used extensively to integrate the interior and exterior finishes with the load-bearing walls, separation is laborious during demolition and a lot of waste is generated. [Means for solving the problem]
[0011] We have developed a load-bearing wall panel made of only insulating material that can have the necessary structural strength without combining it with other structural members. This simplifies the manufacturing process, eliminating the need to glue and screw together multiple components. The bearing wall panels are made of a lightweight insulating material, making them light, easy to handle, and easy to assemble. This also reduces waste generated during demolition.
[0012] Taking advantage of the high toughness of the insulating material, we have developed a tough shear wall panel made entirely from insulating material that has the property of returning to its original shape even if it shrinks under stress. This load-bearing wall panel is not fastened to the wooden shaft with metal fittings or the like, but is attached by simply inserting a packing into the wooden shaft, thereby giving both the wooden shaft itself and the load-bearing wall panel the property of not breaking when subjected to stress.
[0013] Various surface processing methods and surface wrapping methods are used to give the load-bearing wall panels made only from heat-insulating materials the surface strength and durability required depending on the environment in which they are used. As a result, there is no need to add exterior or interior wall finishes after the load-bearing wall panels are installed, making it possible to create building walls using only load-bearing wall panels made from this insulating material. [Effects of the Invention]
[0014] The pre-finished shear wall panels, made entirely from insulating materials with high thermal insulation and toughness, are so light that two adults can lift and assemble them. Furthermore, the assembly of these shear wall panels is a simple process of simply fitting the panels into place, rather than screwing them directly to the wooden shaft. Therefore, as with the construction process of traditional wooden buildings, after the wooden shafts have been assembled, the panels can be assembled between the shafts in a short time. Once assembly is complete, the building is complete. This eliminates the need for the multiple steps required in the past, such as installing the wall underlayment, inserting insulation, creating an air layer on the outside to create a breathable layer, waterproofing, applying the exterior wall finish, laying moisture-proof film and boards on the inside, and then applying the interior wall finish. This shortens the construction period. Furthermore, because it has high toughness and strength, not a single crack occurred in the walls even during the 2023 Noto earthquake, which recorded a seismic intensity of over 6. In other words, it has extremely high earthquake resistance. If any part of the wall becomes damaged, it can be restored by simply removing and replacing the bearing wall panel that is fitted in that area. This makes restoration extremely easy. And because these insulating bearing wall panels are made almost entirely of a single material, they can be almost entirely recycled. Furthermore, the wooden structure of the pillars and beams can be seen from the outside, and the walls can be seen within this structure, which is the essence of traditional Japanese architecture, and creates a building that harmonizes with town planning that values traditional townscapes. [Brief explanation of the drawings]
[0015] An example of installing load-bearing wall panels outside the wooden axis. The load-bearing wall panel 5 with four-sided packing 4 is characterized in that it is fastened in a manner that an embracing column 1a is set on a column 1, an embracing base 2a is set on a base 2, and an embracing base 3a is set on a beam 3 on the wooden axis of a conventional wooden building, the column 1, the base 2, and the beam 3 are placed on the embracing base 2a with their backs to each other, the load-bearing wall panel 5 is fitted between the two embracing columns 1a, and is held down by a holding column 1c, and fixed so that it cannot come loose. The exposed surface of the bearing wall panel 5 is subjected to a surface treatment or wrapping 6 that has properties suitable for various use environments. [Figure 1] Cross section when installing shear wall panels outside the wooden axis [Figure 2] Vertical section when installing shear wall panels outside the wooden axis [Figure 3] A diagram showing the appearance of the wooden axis and the bearing wall panel when the bearing wall panel is installed outside the wooden axis [Figure 4] Appearance of the shear wall panel only when the shear wall panel is installed outside the wooden axis
[0016] An example of installing load-bearing wall panels within a wooden axis. A load-bearing wall panel 5 with four-sided packing 4 is characterized by the fact that, for the wooden axis of a conventional wooden building, a support column 1b is installed on a column 1, a support base 2b is installed on a base 2, and a support base 3b is installed on a beam 3, and the panel is fitted into the area surrounded by the column 1, base 2, and beam 3 with its back to the support column 1b, support base 2b, and support base 3b, and is held down with a holding column 1d, a holding base 2d, and a holding beam 3d, and fixed in place so that it cannot come loose. The exposed surface of the load-bearing wall panel 5 is given a surface treatment or wrapping 6 that has performance suitable for a variety of usage environments. [Figure 5] Cross section when installing a load-bearing wall panel within a wooden axis [Figure 6] Vertical section when installing a bearing wall panel within a wooden axis [Figure 7] A diagram showing the appearance of the wooden axis and the load-bearing wall panel when the load-bearing wall panel is installed inside the wooden axis. [Figure 8]A diagram of the shear wall panel alone when installing the shear wall panel within the wooden axis DETAILED DESCRIPTION OF THE INVENTION
[0017] This heat-insulating load-bearing wall panel can be used in traditional wooden buildings, regardless of the construction era. In this case, simply by incorporating this panel, existing historical buildings can be given high performance in terms of thermal environment and structural strength that meets next-generation standards.
[0018] This heat-insulating material load-bearing wall panel can also be used in wooden buildings that use materials that are not commonly used traditionally, such as two-by-fours. In this case, simply by incorporating this panel, the entire building can be equipped with high performance that meets next-generation standards in terms of thermal environment and structural strength.
[0019] This heat-insulating material load-bearing wall panel can also be used for partitions, interior walls, etc. that do not contribute to the structure or insulation of walls. Even in such cases, it has the advantage of being easy to install and remove.
[0020] This heat-insulating load-bearing wall panel is designed so that the wall finish is pre-finished in a factory, but it also allows for a variety of wall finishes to be applied on-site.
[0021] This wall finishing method for heat-insulating load-bearing wall panels is based on the premise that it is necessary to satisfy the wall finishing performance required by various environments, so in some cases various materials, such as high-strength special materials or X-ray compatible materials, may be attached.
[0022] This heat-insulating material load-bearing wall panel is basically not directly fastened to the wooden axis, but if necessary, a fastening method can be adopted.
[0023] In addition to their waterproofing function, these heat-insulating load-bearing wall panels may have their edges and cross sections pre-shaped to allow for drainage and drainage, or to provide piping space for electrical wires, water pipes, etc.
[0024] The supporting pillars 1a, supporting pillars 1b, supporting pillars 1c, supporting pillars 1d, supporting bases 2a, supporting bases 2b, supporting bases 2d, supporting beams 3b, and supporting beams 3d are made of metal parts such as aluminum or iron or resin, and the surface designs can be changed and produced in various ways. [Explanation of symbols]
[0025] 1: Pillar 1a: Embracing pillar 1b: Support column 1c: Support pillar 1d: Support pillar 2: Base 2a: Embracing base 2b: Support base 2d: Press base 3: digit 3a: Embracing beam 3b: Subscript 3d: Presser foot 4: Packing 5: Shear wall panel 6: Surface treatment or lapping
Claims
1. This load-bearing wall panel can be placed in a wooden shaft surrounded by the pillar and beam foundation of a conventional wooden building, without the need for reinforcement of studs, and without directly fastening with metal fittings, etc., and can be provided with high strength and durability simply by sandwiching and fitting a packing.
2. 2. The load-bearing wall panel of claim 1, which is made solely of an insulating material having high toughness, high thermal insulation and waterproof properties.
3. 3. A load-bearing wall panel according to claim 2, to which various surface treatments or various surface wrappings have been applied in advance to ensure wall surface performance that can be adapted to a variety of usage environments.
Citation Information
Patent Citations
JP205118A
JP302860A
Heat-insulating earthquake-resistant panels and heat-insulating earthquake-resistant wall construction methods
JP7257721B1