Opening structure and construction method of opening structure

Abstract

To provide an opening structure which can be simply constructed to various opening shapes and is excellent in designability, and a construction method of the opening structure.SOLUTION: An opening structure 1 includes: a long plate shaped depth material 3 which is provided on a wall surface in a building room and is mounted so as to cover a depth surface of an opening OP; and a resin-made parting material 4 which is mounted on a depth surface of the depth material 3 and extends along the opening, wherein the parting material 4 has a frame part 42 covering at least a part of the depth surface of the depth material 3, and a parting part 41 extending along an aspect surface of the opening.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an opening structure and a construction method for the opening structure. [Background technology]

[0002] Conventionally, when an opening is provided in a room, a method of constructing the opening generally uses a wooden frame. The shape of the opening is often not only rectangular, but also highly decorative designs such as an arch or triangular top. For example, the technology described in Patent Document 1 can be cited as a technology for constructing a wooden frame to fit various opening shapes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 49-140938 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a structure using a wooden frame as in Patent Document 1, the thickness of the frame must be made thick to ensure strength and for processing reasons, which increases the overall dimensions of the wooden frame, posing a problem in terms of design.

[0005] There is also a method of constructing openings without using wood, using only a wallpaper finish. With a wallpaper finish, unlike a wooden frame, the corners of the opening are not noticeable, and a highly designed finish that blends naturally with the interior space can be expected.

[0006] However, it was necessary to fold the wallpaper in the expected direction according to the shape of the opening and fix it with adhesive. In particular, when the shape of the opening is a curved shape such as an arch, it was necessary to make small cuts in the wallpaper beforehand and fold the wallpaper in the expected direction according to the curve. In addition, it was necessary to finish the wall wallpaper folded in the expected direction and fixed with a strip of finishing wallpaper of the same width as the expected surface of the opening, which required skilled techniques as the adhesive was likely to stain the surrounding area. Therefore, construction was difficult, and there was also the issue that the wallpaper was likely to peel off due to deterioration over time.

[0007] An object of the present disclosure is to provide an opening structure that can be easily constructed for various opening shapes and has excellent design, and a construction method for the opening structure. [Means for solving the problem]

[0008] The present disclosure relates to an opening structure provided on a wall inside a building room, comprising a long, plate-shaped recessed material attached to cover the visible surface of the opening, and a resin trim material attached to the visible surface of the recessed material and extending along the opening, wherein the trim material has a frame portion covering at least a portion of the visible surface of the recessed material, and a trim portion extending along the visible surface of the opening. [Brief description of the drawings]

[0009] [Figure 1] FIG. 13 is a perspective view of the opening structure installed on the base structure. [Diagram 2] FIG. 2 is an exploded perspective view of the opening structure and the base structure. [Diagram 3] 1 is a perspective view showing an assembly process of a base structure. FIG. [Figure 4] FIG. 11 is a perspective view showing the process of installing the bent plywood. [Diagram 5] 1 is a perspective view showing a state in which adhesive and double-sided tape are provided on a bent plywood. FIG. [Figure 6] 1 is a perspective view showing the process of installing the trim material 4. FIG. [Figure 7] This is an oblique view showing the appearance of the trim material 4 after it has been installed. [Figure 8] FIG. 8 is an enlarged sectional perspective view of a portion taken along the line VIII-VIII in FIG. 7. [Figure 9] 1 is a perspective view showing a state in which adhesive and double-sided tape are applied to bent plywood and trim material 4. FIG. [Figure 10] 11 is a perspective view showing the process of attaching the cover material. FIG. [Figure 11] FIG. 11 is a perspective view showing the state in which the cover material is attached. [Figure 12] FIG. 12 is an enlarged perspective sectional view of a portion taken along the line XII-XII in FIG. [Figure 13] 11 is a perspective view showing the process of installing the cross. FIG. [Figure 14] FIG. 2 is an enlarged vertical sectional perspective view of the central part of the front surface of FIG. [Figure 15] 2 is an enlarged vertical sectional perspective view of the central part of the front surface of FIG. 1 with a wrapping sheet applied thereto; [Figure 16] FIG. 11 is an enlarged vertical sectional perspective view of the center of the front surface of the second embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] [First embodiment] Hereinafter, a first embodiment of the present disclosure will be described in detail with reference to the drawings.

[0011] As shown in FIG. 1, the opening structure 1 of this embodiment is provided in an opening OP in a building room. Note that the ceiling is not shown in the drawings of this specification. The building may be a building of any structure, such as an apartment building or a detached house, and may be used for any purpose, such as an office space or a store. Examples of the opening OP used in a building room include shoe closets, under-stair storage, pantries, walk-in closets, workspaces, washrooms, and niche counters, and the shape and size of the opening can be freely selected. In this embodiment, the opening OP is arch-shaped, and the opening structure 1 is installed on the base structure 2 so as to follow the arch shape, and is exposed to the indoor surface as a finishing material.

[0012] In this specification, the term "visible direction" refers to the surface direction of the wall surface of the wall in the building room where the opening OP is provided, and the term "visible direction" refers to the thickness direction of the wall (i.e., the depth direction). In Fig. 1, the room side on the near side is the room side X1, and the room side beyond the wall in the building room where the opening OP is provided is the room side X2.

[0013] As shown in Fig. 2, the opening structure 1 is installed on a base structure 2 in which an opening OP is provided. The base structure 2 is composed of a pillar material 21, an opening material 22, a mounting bracket 23, and a plasterboard 24. The opening structure 1 has a curved plywood 3 as a facade material, a trim material 4, and a cover material 5 as a covering material. In Fig. 2, the plasterboard 24 is indicated by a two-dot chain line. After the opening structure 1 is installed on the base structure 2, the interior finishing is completed by attaching wallpaper C to the wall surface.

[0014] As shown in FIG. 3, the pillar material 21 is a building framework installed from the floor structure to the ceiling structure, and is a wooden square pillar. The pillar material 21 is composed of pillar material 21A, pillar material 21B, and pillar material 21C (see FIG. 2), and all have the same shape. The pillar material 21A and pillar material 21B are pillar materials in which an opening OP is provided, and the other pillars are pillar material 21C. Between the pillar material 21A and the pillar material 21B, an opening for the opening OP according to the intended use is formed. In this embodiment, a wooden square pillar is used, but since the building framework used in the base structure differs depending on the construction method, the shape is not limited as long as sufficient earthquake resistance is ensured for the entire building.

[0015] The opening member 22 is a plate-like member processed from the arch-shaped portion of the opening OP. Usually, a member with a larger horizontal size is prepared, and both ends in the vertical direction are cut to fit the gap between the pillar members 21A and 21B installed on site. The arch-shaped portion may be processed on site or may be processed in advance. The dimension a in the view direction of the arch lower end 22a shown in FIG. 3 is the same as the thickness dimension of the gypsum board 24.

[0016] The mounting bracket 23 is a bracket for mounting the opening member 22 to the pillar members 21A and 21B. It is substantially Z-shaped and has screw insertion holes 23a and 23b on two surfaces, the facing surface on the X1 side and the facing surface on the X2 side. As long as it has a structure for mounting the opening member 22 to the pillar member 21, any fastener may be used, and there are no limitations on the material, shape, or number of fasteners used.

[0017] The gypsum board 24 is composed of two types of gypsum boards, gypsum board 24A used on the visible surface of the pillar material 21 and gypsum board 24B used in the visible direction. The gypsum board 24B has an opening board 242 with an opening OP and a rectangular wall board 241 (see FIG. 2) used on the wall surface other than the opening OP. The gypsum board 24A is a long board, and the size in the longitudinal direction is the height from the floor surface to the lower end surface of the opening material 22, and the size in the lateral direction is the width of the visible surface of the pillar material 21. The gypsum board 24B, which is the wall surface base, has a height from the floor surface to the ceiling surface, and the width is adjusted so that it can be attached between the pillar material 21A and the pillar material 21B. The opening board 242 is processed into an arch shape on site using a local processing saw or the like to match the arch shape of the opening material 22.

[0018] As shown in FIG. 4, the curved plywood 3 is a structural plywood used as a base material for a wall, and is a highly flexible plywood with excellent allowable stress against bending, which can be freely bent to match the shape of the opening OP. The curved plywood 3 is a long board, and needs to be a size that can sufficiently cover the visible surface of the opening OP. Therefore, the size of the curved plywood 3 in the short direction is approximately the same as the width of the visible surface of the pillar material 21. The curved plywood 3 has a surface 31b and an adhesive surface 31a, and the adhesive surface 31a is often made of a rough material with a rough surface. Since the curved plywood 3 is a base material, it may be made of multiple sheets with joints instead of one sheet. The curved plywood 3 is an example of an adhesive material. The material of the adhesive material is not particularly limited, and may be, for example, medium density fiberboard (MDF) or a resin material.

[0019] The trim material 4 is a long resin material that is attached with its longitudinal direction aligned with the protruding corner of the opening OP. As shown in the cross-sectional perspective view of Fig. 8, it is composed of a trim portion 41 having a generally L-shaped cross section and a frame portion 42 extending perpendicularly from the trim portion 41. The trim portion 41 has a first trim portion 411 that faces the visible surface of the opening OP, and a second trim portion 412 that protrudes from the first trim portion 411 to the inside of the opening OP. The first edge portion 411 has a dust portion 411a that extends horizontally from the end portion in contact with the wall surface toward the interior side, and a first facing portion 411b that extends perpendicularly from the dust portion 411a and parallel to the wall surface, and the second edge portion 412 has a second facing portion 412a that extends continuously from the first facing portion 411b, and an engagement surface 412b that is a part of the back surface of the second facing portion 412a. The edge material 4 does not have to be made of a single member, and may be made of multiple members, for example. In this case, it is preferable that the ends of the multiple members are abutted against each other and arranged without any gaps.

[0020] Frame portion 42 is a fixed portion of trim material 4 that extends perpendicularly from edge portion 41 in the projection direction. At the position where frame portion 42 protrudes from edge portion 41, edge portion 41 is divided into a first edge portion 411 and a second edge portion 412. Frame portion 42 is long enough to cover part of the projection surface of opening OP, and has knurled adhesive surface 42a and surface 42b exposed to opening OP. Engagement surface 412b and surface 42b are continuous and form a substantially L-shaped outer peripheral surface.

[0021] As shown in Figs. 10 to 12, the cover material 5 is a long resin material that is attached along the frame 42 of the trim material 4. The cover material 5 has a knurled adhesive surface 51a and a finished surface 51b that is finally exposed to the room as a finishing material. As shown in the cross-sectional perspective view of Fig. 12, the cover material 5 is attached between the engagement surfaces 412b of the trim materials 4 used at both corners during construction, so the size in the short side direction (projection direction) is adjusted to match the distance between the engagement surfaces 412b. Since the adhesive surface 51a is knurled, the width of the cover material 5 can be easily changed by cutting it to match the groove processed along the longitudinal direction when adjusting the size in the short side direction. Since the finished surface 51b is a finishing material that is exposed to the room after construction, it is desirable that the surface has a uniform surface, a luxurious feel to the material, and a surface finish that is highly in harmony with the interior and looks good. The cover material 5 does not have to be composed of one piece, and may be composed of multiple pieces, for example. In this case, it is preferable that the ends of the multiple pieces are abutted against each other and arranged without gaps.

[0022] Wallpaper C can be any type of wallpaper used for general wall finishing. For example, resin-based wallpaper or paper wallpaper can be used. Since this is the final finishing material and will be applied on-site, it is sufficient to have enough materials prepared for construction.

[0023] Next, a construction method for the opening structure 1 will be described in detail together with its effects with reference to the drawings. First, a method for assembling the base structure 2 for installing the opening structure 1 will be described.

[0024] As shown in FIG. 3, the opening member 22 is attached between the pillar members 21A and 21B. Before attaching the opening member 22 to the pillar member 21, a screw is inserted into the screw insertion hole 23b on the rear side, and two mounting brackets 23 are fixed to each of the vertical ends of the opening member 22. Next, from the indoor side X1, a screw is inserted into the front screw insertion hole 23a, and the opening member 22 is fixed to the pillar members 21A and 21B using a total of four mounting brackets 23. After the installation is completed, the same work is also performed from the indoor side X2. In addition, in the drawings other than FIG. 2, the pillars 21C other than the pillar members 21A and 21B, the gypsum boards 24 attached thereto, and the crossing C are omitted.

[0025] Next, two gypsum boards 24A are attached to the respective prospective surfaces of the pillar material 21A and the pillar material 21B. In the previous step, the opening member 22 was fixed to the pillar material 21A and the pillar material 21B, so that the lower part of the arch lower end 22a of the opening member 22 is a rectangular gap. Since the dimension a of the arch lower end 22a is equal to the thickness of the gypsum board 24A, the end of the gypsum board 24A is butted against the arch lower end 22a and attached, so that the surfaces of the members constituting the opening OP are aligned flush with each other.

[0026] Next, gypsum board 24B is attached to each of the visible surfaces of pillar material 21A and pillar material 21B. The gypsum board 24B is attached while aligning the position so that the arch shape processed in the opening board 242 and the arch shape of the opening OP composed of the opening material 22 and the gypsum board 24A overlap. The gypsum board 24B is attached to both the visible surfaces of the interior side X1 and the interior side X2. A method of attaching the gypsum board 24 to the pillar material 21 is generally to apply an adhesive such as wood glue to the pillar material 21 and fix the gypsum board 24 with gypsum board screws using a tool such as a screwdriver. In this embodiment, any method may be used as long as sufficient strength is maintained.

[0027] This completes the assembly work of the base structure 2. Next, a method of constructing the opening structure 1 on the base structure 2 will be described.

[0028] First, as shown in Fig. 4, the curved plywood 3 is attached to the exposed surface of the arch-shaped opening OP provided in the base structure 2. A necessary amount of adhesive such as wood glue is spread onto the adhesive surface 31a of the curved plywood 3, the curved plywood 3 is pressed against the exposed surface of the opening OP, the curved plywood 3 is fixed to the base structure 2 with screws using a tool such as a screwdriver, and the curved plywood 3 is attached to the exposed surface of the opening OP.

[0029] Although the bent plywood 3 has not been subjected to any bending process in advance, it is a highly flexible plywood with excellent allowable bending stress, so it can be bent freely to fit the shape of the opening OP on-site and then attached. As shown in Figure 4, the bent plywood 3 can be easily cut to the same width as the expected dimension D of the opening OP on-site. The portion shown by the dashed line in Figure 4 is the excess plywood that was cut off. By using the bent plywood 3, there is no need for prior bending or processing such as aligning the sizes of the components, which increases the ease of work on-site.

[0030] Next, as shown in FIG. 5, the double-sided tape DT for fixing the trim material 4 is applied parallel to the longitudinal direction of the surface 31b of the curved plywood 3 fixed to the base structure 2, and the adhesive G is applied. The adhesive G is placed on the front side of the room side X1, and the double-sided tape DT is placed on the back side in parallel with a certain gap, and the adhesive G is applied to a surface slightly inside the projection direction so that it does not protrude onto the visible surface of the gypsum board 242 after the components are crimped. The dimension b in the projection direction including the adhesive G and the double-sided tape DT from the protruding corner of the opening OP is a length that does not exceed the width in the projection direction of the frame part 42 of the trim material 4. The same operation is performed on the protruding corner of the room side X2 of the opening OP, and the adhesive G and the double-sided tape DT for fixing the trim material 4 are provided on the surface 31b of the curved plywood 3.

[0031] Next, as shown in FIG. 6, the trim 4 is pressed against the adhesive G and double-sided tape DT. The trim 4 is a long, flexible resin material, and can be bent freely to fit the opening OP on-site. The adhesive surface 42a of the trim 4 is knurled, and by pressing the adhesive surface 42a against the adhesive G, the adhesive G fills the finely processed grooves, providing sufficient strength. The trim 4 is fixed not only by the adhesive G but also by the double-sided tape DT, so that the double-sided tape DT reliably fixes the trim 4 and the curved plywood 3 even during the time it takes for the adhesive G to dry, preventing the trim 4 from shifting or falling off after being fitted to the arch shape.

[0032] Next, as shown in Figs. 7 and 8, pressure bonding is performed from both the indoor side X1 and the indoor side X2, and the trimming material 4 is attached to both corners of the opening OP so that the two trimming materials 4 face each other. The outer peripheral surface with a substantially concave shape formed by the engagement surface 412b and the surface 42b of the two trimming materials 4 is exposed on the front surface of the opening OP. The surface 31b of the curved plywood 3 and the adhesive surface 42a of the trimming material 4 are firmly fixed by the adhesive G and the double-sided tape DT. The trimming material 4 is fixed to the curved plywood 3 only by the adhesive surface 42a of the frame portion 42, and the trimming portion 41 of the trimming material 4 is in contact with the base structure 2. With this configuration, the work of attaching the trimming material 4 along the arch shape is very easy, while the adhesive G and the double-sided tape DT can firmly fix the trimming material 4. Therefore, the work time is reduced, and the construction work can be performed efficiently.

[0033] In this way, by using two trim pieces 4 to cover both corners of the opening OP, the opening structure 1 can be installed on the base structure 2 of any building without limiting the width of the opening OP in the prospective direction. When changing the interior space not only in new construction but also in renovation, the internal structure is often unknown until the building's framework is revealed. Therefore, it is required to respond flexibly on site, but the trim piece 4 of this embodiment can be installed on walls of any thickness, so there is no need to prepare spare materials in anticipation of trouble. As described above, the bent plywood 3 can also be easily processed on site, so the configuration using two trim pieces 4 allows flexible construction to be performed on any site.

[0034] Next, as shown in Fig. 9, after the trim 4 is attached, double-sided tape DT for fixing the covering material 5 is applied parallel to the longitudinal direction of the surface 42b of the trim 4 exposed on the front side of the opening OP and the surface 31b of the bent plywood 3, and adhesive G is applied. Adhesive G is placed on the front side of the surface 42b of the trim 4 facing the interior side X1, and double-sided tape DT is placed parallel with a certain gap. The same work is performed for the other trim 4 attached to the protruding corner on the interior side X2 of the opening OP. Adhesive G is applied to multiple places on the bent plywood 3 at regular intervals according to the width in the front direction.

[0035] Next, as shown in FIG. 10, the cover material 5 is pressed against the adhesive G and double-sided tape DT. The cover material 5 is a long, flexible resin material, and can be bent freely to fit the opening OP on-site. The adhesive surface 51a of the cover material 5 is knurled, and by pressing the adhesive surface 51a against the adhesive G, the adhesive G fills the finely processed grooves, providing sufficient strength. The cover material 5 is fixed not only by the adhesive G but also by the double-sided tape DT, so that the double-sided tape DT can reliably fix the cover material 5, the trim material 4, and the bent plywood 3 even during the time until the adhesive G dries, preventing the cover material 5, which has been fitted to the arch shape, from shifting or falling off.

[0036] Here, as shown in Fig. 11, the finished surface 51b of the covering material 5 and the end of the second visible portion 412a of the trim material 4 are exposed on the visible surface of the opening OP to which the covering material 5 is attached. The finished surface 51b is the final finishing material that is exposed inside the room after construction, and has a uniform surface with a luxurious finish. The simple method of attaching the covering material 5 using the adhesive G and double-sided tape DT described above eliminates the risk of excess adhesive G spilling out onto the finished surface 51b or of touching materials with dirty hands due to the spilled adhesive G, spreading the dirt during construction, and allows for efficient construction work.

[0037] 12, the visible surface of the covering material 5 attached to the opening OP abuts against the engagement surface 412b of the trim material 4, and the adhesive surface 51a of the covering material 5 is firmly fixed to the surface 42b of the trim material 4 with adhesive G and double-sided tape DT. It is also firmly fixed to the surface 31b of the bent plywood 3 with adhesive G. A gap is generated between the surface 31b of the bent plywood 3 and the adhesive surface 51a of the covering material 5 due to the thickness of the frame portion 42 of the trim material 4, but due to the effect of the knurling applied to the adhesive surface 51a of the covering material 5, the adhesive G can be sufficiently spread into the gap and the covering material 5 can be firmly fixed.

[0038] This completes the construction work of the opening structure 1. The height of the trim part 41 of the trim material 4 is limited, and only a small amount is exposed to the visible surface of the wall, so that it does not stand out against both corners of the opening OP when viewed from inside the room, giving a natural impression. The finished surface 51b of the cover material 5 and the end of the second visible part 412a of the trim material 4 are attached to the visible surface of the opening OP so as to be approximately flush with each other. Furthermore, the engagement surface 412b of the trim material 4 and the visible surface of the cover material 5 are fixed without any gaps, giving the impression that the visible surface of the opening OP is a single surface without any seams.

[0039] As shown in FIG. 13, after the construction of the opening structure 1 is completed, the wall surface is finished by attaching the cloth C to the gypsum board 24. The cloth C attached to the part where the opening structure 1 is installed has an arch-shaped opening OP. As shown in the cross-sectional perspective view of FIG. 14, the cloth C is cut so that the arch-shaped end is butted against the chip part 411a of the trim material 4. As a result, the chip part 411a protrudes slightly from the visible surface of the cloth C toward the indoor side X1 and the indoor side X2. The chip part 411a is given a certain amount of protrusion width, and in addition to thin finishing materials such as paper cloth, thick finishing materials such as embossed resin-based cloth can also be used, which expands the options for the cloth to be used.

[0040] In the present disclosure, as shown in the cross-sectional view of Fig. 15, a wrapping sheet RS may be used on the surface of the opening structure 1. The first edge portion 411 and the second edge portion 412a exposed on the indoor side X1, the finished surface 51b of the cover material 5, and the same portions of the surface of the edge material 4 attached to the indoor side X2 may each be covered with the wrapping sheet RS. Any type of wrapping sheet RS may be used as long as it is a general decorative sheet for interior decoration. For example, a resin-based wrapping sheet may be used.

[0041] By covering the exposed portion of the opening structure 1 with the wrapping sheet RS, it is possible to achieve a uniform, luxurious surface finish that harmonizes well with the interior and looks good, creating a highly designed and free opening. By using the resin wrapping sheet RS, it is possible to clean with water and detergent, making it easier to restore it to its original state.

[0042] According to the opening structure 1 described above, the opening structure 1 installed in the opening OP gives the impression of being integrated with the wall structure, and it is possible to provide an opening structure with excellent design that harmonizes well with the indoor space. For example, by matching the colors of the wallpaper C with the trim material 4 and the cover material 5 of the opening structure 1, the opening structure blends more naturally with the interior and further enhances its harmony with the indoor space.

[0043] In addition, the trim material 4 and the cover material 5 of this embodiment can be easily installed using only the adhesive G and the double-sided tape DT, and unlike the conventional method of constructing an opening, there is no need to fix the wooden frame to the base structure with screws or bolts. Also, compared to the case where the arch-shaped facing surface is finished with wallpaper, delicate work that requires the skill of a craftsman is not required during construction, such as making fine cuts in the wallpaper and folding the wallpaper in the facing direction along the arch shape, and this also prevents the adhesive stains on the materials caused by the work. The configuration of the opening structure 1 can reduce the number of steps required to construct the opening, and the work can be carried out efficiently.

[0044] [Second embodiment] Next, a second embodiment of the present disclosure will be described in detail with reference to Fig. 16. The second embodiment differs from the first embodiment in that a trim material 4B having a modified configuration of the trim material 4 is used, and that a cover material 5 is not used in construction. The other configurations are the same as those of the opening structure 1 in the first embodiment, and therefore the description will be omitted.

[0045] The trim material 4B used in the opening structure 1B is a long resin material with a substantially U-shaped cross section that is attached with its longitudinal direction aligned with the visible surface of the opening OP. As shown in the cross-sectional perspective view of Fig. 16, the trim material 4B is composed of two trim parts 41B with a substantially L-shaped cross section and a frame part 42B that extends perpendicularly from the lower end of the trim parts 41B to cover the visible surface of the bent plywood 3.

[0046] The trim material 4B is a long, flexible resin material that can be bent freely to fit the opening OP on-site. The frame 42B is fixed to the surface 31b of the curved plywood 3 with adhesive G and double-sided tape DT (not shown), and the knurling of the frame 42B is filled with adhesive G, firmly fixing the curved plywood 3 and the trim material 4B. When the trim material 4B is attached to the base structure 2, the two trim parts 41B cover both corners of the opening OP, and the tips of the trim parts 41B abut against the base structure 2.

[0047] The second embodiment of the present disclosure described above can be constructed in the same manner as the first embodiment. Also, in the second embodiment, the trim material 4B may be covered with the wrapping sheet RS described above after the cloth C is applied. According to the second embodiment, the cover material 5 is not required, so that the installation work is further simplified and the number of steps can be reduced. In terms of design, the seamless frame portion 42B of the trim material 4B covers the visible surface of the opening OP, so that the opening structure 1B becomes more inconspicuous and is more harmonious with the indoor space. Also, by omitting the cover material 5, the second trim portion 412 is not required for the trim portion 4B, so that the height covering the visible surface of the opening OP can be lowered by the amount of the second trim portion 412, and together with the above-mentioned effect, the opening structure 1B can be provided that is more inconspicuous and blends naturally with the indoor space.

[0048] The present disclosure is not limited to the above-described embodiments and can be modified as appropriate.

[0049] For example, in the above embodiment, the opening OP is described as an example of an arch-shaped opening, but is not limited thereto. The opening shape may be, for example, rectangular, but a more preferable opening shape is a shape including a curved portion such as an arch shape.

[0050] The amount and location of the adhesive G and double-sided tape DT used in the first embodiment may be changed in consideration of the weather and season. They may be changed as appropriate as long as the members can be firmly fixed. Depending on the situation, only one of the adhesive G and the double-sided tape DT may be used for construction, or another fixing method may be used as long as the members can be firmly fixed.

[0051] The base structure 2 may differ from the embodiment of the present disclosure depending on the construction method and the situation of new construction or renovation, etc. The opening structures 1 and 1B of the present disclosure can be installed on any base structure 2, and the assembly method of the base may be appropriately changed on site.

[0052] The adhesive surface 51a of the cover material 5 and the adhesive surface 42a of the frame portion 42 do not need to be knurled, and do not need to have multiple grooves arranged side by side in the prospective direction of the surfaces to be adhered.

[0053] In the first embodiment, the edge portion 41 of the trim material 4 has the first edge portion 411 and the second edge portion 412, but the trim material 4 of the present disclosure may have a shape that does not include the second edge portion 412. In addition, the chipping portion 411a of the trim material 4 is not limited to a horizontal surface, and may have a shape that slopes obliquely from the end portion that contacts the wall surface toward the interior side, for example.

[0054] In the second embodiment, the trim material 4B may be divided into two. For example, the trim material 4B may be divided into two along the longitudinal direction at approximately the center of the frame portion 42B. In this case, by performing construction so that each trim portion 41B covers both corners of the opening OP, the ends of the divided frame portions 42B come into contact with each other and cover the surface 31b of the bent plywood 3 without any gaps. Therefore, the bent plywood 3 is not exposed, and the cover material 5 does not need to be provided as in the second embodiment. The division position of the trim material 4B is not particularly limited.

[0055] [Aspect 1] An opening structure provided on a wall surface inside a building, A long plate-shaped prospective material that is attached so as to cover the prospective surface of the opening; A resin trim material attached to the prospective surface of the prospective material and extending along the opening, The trim material has a frame portion covering at least a portion of the visible surface of the visible material, and a trim portion extending along the visible surface of the opening, forming an opening structure. [Aspect 2] The trim material is attached to both corners in the projection direction of the opening, The opening structure of claim 1, further comprising a covering material covering the visible surface of the frame portion and the visible surface of the visible material. [Aspect 3] The edge portion is composed of a first edge portion facing a front surface of the opening and a second edge portion protruding from the first edge portion toward the inside of the opening, The opening structure according to aspect 1 or 2, wherein the covering material is attached to a recess formed by the visible surface of the frame portion and the second edge portion. [Aspect 4] The opening structure according to any one of aspects 1 to 3, wherein the shape of the opening includes a curved portion. [Aspect 5] The opening structure according to any one of aspects 1 to 4, wherein the opening has an arch shape. [Aspect 6] The opening structure according to any one of aspects 1 to 5, wherein the trim material is fixed to the recessed material with an adhesive and double-sided tape. [Aspect 7] The opening structure according to any one of aspects 2 to 6, wherein the covering material is fixed to the trim material with an adhesive and double-sided tape. [Aspect 8] The opening structure according to any one of aspects 2 to 6, wherein the covering material has a surface to which it is fixed that has a plurality of grooves extending along the opening and arranged side by side in the prospective direction. [Aspect 10] A construction method for the opening structure according to aspect 2, A prospective material installation process for installing the long plate-shaped prospective material on the prospective surface of the opening so as to follow the prospective surface; A trim material installation process for installing the trim material along the opening at both corners in the projection direction of the opening; A construction method for an opening structure including a covering material installation process of installing the covering material so as to cover the visible surface of the frame portion and the visible surface of the visible material. [Explanation of symbols]

[0056] DT double-sided tape, G adhesive, OP opening, 1 opening structure, 3 curved plywood (front end material), 4 trim material, 5 cover material (covering material), 41, 41B trim portion, 411 first trim portion, 412 second trim portion, 42, 42B frame portion, 51a knurled adhesive surface (covering material having multiple grooves)

Claims

1. An opening structure provided on a wall surface inside a building, A long plate-shaped prospective material that is attached so as to cover the prospective surface of the opening; A resin trim material attached to the prospective surface of the prospective material and extending along the opening, The trim material has a frame portion covering at least a portion of the visible surface of the visible material, and a trim portion extending along the visible surface of the opening, forming an opening structure.

2. The trim material is attached to both corners in the projection direction of the opening, The opening structure according to claim 1 , further comprising a covering material covering the visible surface of the frame portion and the visible surface of the visible material.

3. The edge portion is composed of a first edge portion facing a front surface of the opening and a second edge portion protruding from the first edge portion toward the inside of the opening, The opening structure according to claim 2 , wherein the covering material is attached to a recess formed by the visible surface of the frame portion and the second edge portion.

4. The opening structure according to claim 1 or 2, wherein the shape of the opening includes a curved portion.

5. The opening structure according to claim 1 or 2, wherein the opening has an arch shape.

6. The opening structure according to claim 1 or 2, wherein the trim material is fixed to the recessed material with an adhesive and double-sided tape.

7. The opening structure according to claim 2 or 3, wherein the covering material is fixed to the trim material with an adhesive and double-sided tape.

8. The opening structure according to claim 7 , wherein the covering material has a plurality of grooves extending along the opening and arranged side by side in a prospective direction on a surface to which the covering material is fixed.

9. A construction method for the opening structure according to claim 2, A prospective material installation process for installing the long plate-shaped prospective material on the prospective surface of the opening so as to follow the prospective surface; A trim material installation process for installing the trim material along the opening at both corners in the projection direction of the opening; A construction method for an opening structure including a covering material installation process of installing the covering material so as to cover the visible surface of the frame portion and the visible surface of the visible material.

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