Wood mounting structure and wood mounting method

Abstract

To enable the simple and aesthetically pleasing use of wood as an interior material. [Solution] A wood mounting structure comprising a piece of wood having a hole cut out, having a hole bottom and a hole wall intersecting and continuous with the hole bottom, and an anchor having an expanded portion embedded in the hole, wherein the expanded portion is embedded in the hole wall of the wood.

Description

Technical Field

[0001] The present invention relates to a wood mounting structure and a wood mounting method.

Background Art

[0002] Due to efforts such as measures against global warming, wood, which is a carbon dioxide fixation source, has been applied to interior ceiling finishes and wall finishes. (For example, see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Depending on the thickness and shape of the wood, etc., it may be time-consuming and costly to install as an interior material. Also, when installing from the indoor side with mounting materials (such as retaining screws, etc.), there was a risk that the mounting materials would be visible and the design would be impaired.

[0005] The present invention has been made in view of the above problems, and its object is to enable wood to be used as an interior material simply and without impairing the design.

Means for Solving the Problems

[0006] The main invention for achieving the above object includes wood in which a hole having a hole bottom and a hole wall that intersects and is continuous with the hole bottom is drilled, and an anchor having an expanded portion embedded in the hole, and is characterized in that the expanded expanded portion is recessed into the hole wall of the wood. It is a wood mounting structure.

[0007] Other features of the present invention will be revealed in the specification and drawings described below. [Effects of the Invention]

[0008] According to the present invention, wood can be used as an interior material in a simple manner and without compromising its aesthetic appeal. [Brief explanation of the drawing]

[0009] [Figure 1] This diagram shows the configuration of the wood mounting structure in this embodiment. [Figure 2] This is a side view of anchor 20. [Figure 3] Figure 3A is a perspective view of anchor 20, and Figure 3B is an exploded perspective view of anchor 20. [Figure 4] Figures 4A to 4D are explanatory diagrams illustrating a general method of installing anchor 20. [Figure 5] Figures 5A to 5C are explanatory diagrams illustrating the method of attaching the anchor 20 in this embodiment. [Figure 6] Figures 6A and 6B are explanatory diagrams of the first modified example. [Figure 7] This is an explanatory diagram of the second modified example. [Modes for carrying out the invention]

[0010] The following information will become clear from the description in the specification and drawings described later.

[0011] (Aspect 1) A wood mounting structure comprising: a piece of wood having a hole cut out, having a hole bottom and a hole wall intersecting and continuous with the hole bottom; and an anchor having an expanded portion embedded in the hole, wherein the expanded portion is embedded in the hole wall of the wood.

[0012] According to the wood mounting structure of Embodiment 1, wood can be used as an interior material in a simple manner and without compromising its aesthetic appeal.

[0013] (Aspect 2) The wood mounting structure according to Aspect 1, wherein the anchor includes a plate portion having a diameter larger than that of the hole, and the plate portion has an anchor shaft hole with a diameter smaller than that of the expanded portion. This is desirable.

[0014] According to the wood mounting structure of Aspect 2, it can contribute to maintaining the shape (preventing return) after the expanded portion expands.

[0015] (Aspect 3) The wood mounting structure according to Aspect 2, wherein the plate portion is preferably screwed to the wood.

[0016] According to the wood mounting structure of Aspect 3, fail - safe can be provided.

[0017] (Aspect 4) The wood mounting structure according to any one of Aspects 1 to 3, wherein the anchor has a screw portion, and it is desirable that the screw portion protrudes from the wood.

[0018] According to the wood mounting structure of Aspect 4, it can be easily fixed to a base material (for example, a ceiling suspension base, etc.) using the screw portion.

[0019] (Aspect 5) The wood mounting structure according to any one of Aspects 1 to 4, which has an adhesive sheet covering the hole bottom and the hole wall, and it is desirable that the adhesive sheet is sandwiched between the wood and the anchor.

[0020] According to the wood mounting structure of Aspect 5, the anchor can be more reliably fixed to the wood. Also, it is easier to work compared to an amorphous adhesive, etc.

[0021] (Aspect 6) A method for installing an anchor having an expanding portion into a piece of wood from which a hole has been excavated, the hole having a bottom and a hole wall intersecting and continuous with the bottom, characterized in that the expanding portion is inserted into the hole and expanded so that the expanding portion is embedded into the hole wall of the wood.

[0022] According to the wood installation method of embodiment 6, wood can be used as an interior material in a simple manner and without impairing its aesthetic appeal.

[0023] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The same or equivalent components, members, etc., shown in each drawing are denoted by the same reference numerals, and redundant descriptions will be omitted as appropriate.

[0024] ===Implementation Method=== <<Regarding the use of wood in interior finishes>> As part of measures to combat global warming, and also due to the government's proactive efforts to foster forests, forestry, and the timber industry, there is a growing demand for interior wood finishes in reinforced concrete (RC) and steel (S) buildings, where wood-based materials (hereinafter simply referred to as wood) that act as a carbon dioxide sequestering source are used as much as possible in the interior.

[0025] When using wood for interior finishes (such as ceiling or wall finishes), the interior finish restrictions stipulated in the Building Standards Act must be complied with. For this reason, special materials that have been treated to be flame-retardant (materials that have obtained certification from the Minister of Land, Infrastructure, Transport and Tourism as "non-combustible materials" or "semi-non-combustible materials" after following prescribed procedures) are often used.

[0026] When using wood as a louver-shaped component (a shape in which long, narrow boards are arranged parallel to each other at a constant width) for interior finishing (in this case, ceiling finishing), there are two main ways to present it.

[0027] One method of displaying the wood is to use the flat-grained side as the side surface (hereinafter referred to as linear), and the other method is to use the flat-grained side as the bottom surface (hereinafter referred to as planar).

[0028] In the case of linear components, grooves or counterbores are machined into the upper end surface, and multiple metal fittings of different shapes are combined and attached to the suspension base via suspension bolts. As a result, the number of components increases, making the process complex, time-consuming, and ultimately costly, which makes it difficult to popularize and standardize the use of wood in interior finishes.

[0029] In the case of planar wood, if the thickness is sufficient, it is possible to fasten it to the designated base material from the back (in this case, the top surface) side with fastening screws (hereinafter simply referred to as screws). However, in this case, there is a risk of the wood splitting. Also, adhesive is often used in conjunction with screws to assist in fastening, but in the case of non-combustible or semi-non-combustible wood treated with flame retardants as mentioned above, the flame retardants have the property of adsorbing moisture (deliquescent), which may hinder adhesion, so the use of adhesive is not recommended. Furthermore, in the case of non-combustible or semi-non-combustible wood treated with flame retardants, in addition to the original mass of the wood, 180kg~300kg / m 3 This results in a material with a certain degree of increased mass. Therefore, in addition to concerns about metal corrosion and unstable adhesive properties, there is also a risk of heavy objects falling onto the material.

[0030] On the other hand, if the thickness is relatively thin, it can be fixed to the base material on the back side by inserting screws from the surface (in this case, the bottom surface). However, in this case, the screw heads will be visible from inside the room, which detracts from the aesthetic appeal.

[0031] Thus, when using wood as an interior material, depending on the thickness and shape of the wood, it can be difficult to install easily, and there is a risk that the aesthetic appeal may be compromised.

[0032] Therefore, in this embodiment, regardless of the thickness or shape of the wood, mounting materials (anchors, described later) can be easily attached to the back (back) surface. This makes it possible to use wood as an interior material easily and without compromising its aesthetic appeal.

[0033] <<Wooden mounting structure>> Figure 1 shows the configuration of the wood mounting structure in this embodiment.

[0034] The wood mounting structure of this embodiment comprises a piece of wood 10 and an anchor 20 fixed to the piece of wood 10.

[0035] <About Wood 10> The wood 10 is a board-shaped wooden component used for interior ceiling and wall finishes. In this embodiment, the wood 10 is arranged in a planar manner as an interior finish. In the wood 10, the side that faces the room (the side that becomes the finish) is called the front side, and the opposite side is called the back side (rear side). The type of wood 10 is not particularly limited and includes engineered wood such as sawn lumber, structural plywood, structural laminated timber, laminated veneer lumber (LVL), and cross-laminated timber (CLT).

[0036] Furthermore, the wood 10 in this embodiment is flame-retardant wood (non-combustible or semi-non-combustible material) that has been treated to be flame-retardant, and as mentioned above, in addition to the original mass of the wood, it has a mass of 180 kg to 300 kg / m 3 It is a material with a certain degree of mass increase.

[0037] The wood 10 has a hole 12' on its back side. The hole 12' has a hole bottom 12a' and a hole wall 12b' that intersects with and continues from the hole bottom 12a'. Note that the hole 12' is formed when the hole 12 is deformed by the expansion of the expanded portion 22 (described later) of the anchor 20 embedded in the hole 12, which will be described later. Specifically, the hole wall 12b' is oblique in shape, and the diameter of the hole 12' increases as it approaches the hole bottom 12a'.

[0038] <About Anchor 20> The anchor 20 is a component (attachment material) used to attach building materials (in this case, wood 10) to an object (for example, a ceiling suspension hardware base). As mentioned above, the anchor 20 is fixed to the back side (rear side) of the wood 10. In other words, the anchor 20 is not visible from the front side (indoor side), so the aesthetic appearance is not compromised. Furthermore, compared to the general use of the anchor 20 (reference examples described later), it is easy to attach to the wood 10 (details will be described later). In addition, the wood 10 can be easily attached to a base material (not shown) using the anchor 20.

[0039] Figure 2 is a side view of anchor 20. Figure 3A is a perspective view of anchor 20, and Figure 3B is an exploded perspective view of anchor 20.

[0040] The anchor 20 is a small, expandable (also called a base-expanding) anchor, and comprises an anchor shaft portion 21, an expandable portion 22, and a washer 23. In this embodiment, the anchor shaft portion 21 and the expandable portion 22 are made of metal, and the washer 23 is made of resin (plastic).

[0041] The anchor shaft portion 21 has a threaded portion 21a and a tapered portion 21b.

[0042] The threaded portion 21a is a rod-shaped part of the anchor shaft 21 with a constant diameter, and has male threads formed around its circumference. As shown in Figure 1, when the anchor 20 is attached to the wood 10, the threaded portion 21a protrudes from the wood 10. This allows the wood 10 to be easily attached to a base material or the like using the threaded portion 21a. In this embodiment, the entire rod-shaped (constant diameter) part of the anchor shaft 21 is the threaded portion 21a, but this is not limited to this, and only a part of it may be the threaded portion 21a. However, it is desirable that the threaded portion 21a is provided on the part that protrudes from the wood 10.

[0043] The tapered portion 21b is a roughly conical portion formed at the end of the anchor shaft portion 21 (the end that is inserted into the hole 12 of the wood 10), and has a tapered shape in which the diameter increases as it approaches the end. This tapered portion 21b is the portion for expanding the expanding portion 22, which will be described later. The diameter at the end of the tapered portion 21b (maximum diameter) is d0, and the diameter of the threaded portion 21a is d1( <d0)である。

[0044] As shown in Figures 3A and 3B, the expanding portion 22 is fitted onto the threaded portion 21a of the anchor shaft portion 21, and when not expanded, it is fixed near the boundary between the threaded portion 21a and the tapered portion 21b. The expanding portion 22 also has a base portion 22a and an expanding piece 22b.

[0045] The base portion 22a is an annular part with a through hole through which the anchor shaft portion 21 (threaded portion 21a) is inserted, and is a part that does not deform (expand) even when the expanding portion 22 is expanded.

[0046] The expanding piece 22b is the part that expands and extends from the base 22a. Multiple (four in this case) expanding pieces 22b are provided side by side on the base 22a, and a gap S is provided between adjacent expanding pieces 22b. This makes it possible to deform (expand) each of the four expanding pieces 22b.

[0047] As shown in Figure 2, when the expanding portion 22 is not expanded (non-expanded), the outer diameter of the expanding portion 22 is approximately the same as the maximum diameter d0 of the tapered portion 21b. On the other hand, when the expanding portion 22 is expanded, the outer diameter of the expanding portion 22 becomes larger than the maximum diameter d0 of the tapered portion 21b, depending on the thickness of the expanding piece 22b.

[0048] The washer 23 (corresponding to the plate portion) is a thin, plate-shaped member with a circular planar shape, and has an anchor shaft hole 23a formed in the center for inserting the anchor shaft portion 21 (threaded portion 21a). In Figure 3B, the diameter d2 of the anchor shaft hole 23a is larger than the diameter d1 of the threaded portion 21a, and smaller than the outer diameter of the expanding portion 22 (in this case, approximately the same diameter as the maximum diameter d0 of the tapered portion 21b).

[0049] As shown in Figure 2, by pressing the washer 23 toward the tapered portion 21b side (downward in the figure), the expanding portion 22 (specifically the four expanding pieces 22b) is spread outward by the tapered portion 21b of the anchor shaft portion 21. This allows the expanding portion 22 to be deformed (expanded).

[0050] Furthermore, since the diameter d2 of the anchor shaft hole 23a is smaller than the diameter (outer diameter) of the expanding portion 22, the expanding portion 22 can be prevented from coming out of the washer 23. Also, the washer 23 has a wider diameter than the hole 12' formed in the wood 10. As a result, by placing the washer 23 in the wood 10, it is possible to maintain the shape (prevent return to its original shape) after the expanding portion 22 has expanded.

[0051] <<Installation of Anchor 20>> <Reference example> Figures 4A to 4D are explanatory diagrams illustrating a general method of installing anchor 20.

[0052] This example describes the case where the anchor 20 is attached to the rigid member 100. The rigid member 100 is the member to which the anchor 20 is originally attached, and is made of a brittle material such as stone, ceramic lyre, glass, or hard cement board.

[0053] First, as shown in Figures 4A and 4B, a widened-bottom hole 100a is drilled in the rigid member 100 using a special tool 200 (such as a special drilling tool).

[0054] Specifically, first, as shown in Figure 4A, a hole of a predetermined diameter (straight hole) is drilled to a predetermined depth.

[0055] Next, as shown in Figure 4B, the bottom of the hole is widened with a special tool 200 to form an enlarged-bottom hole 100a, where the diameter of the hole increases as it approaches the bottom.

[0056] Next, as shown in Figure 4C, insert the anchor 20 into the hole 100a by aligning the end face of the tapered portion 21b of the anchor 20 with the bottom of the hole 100a in the rigid member 100 (fit the anchor 20 into the hole 100a).

[0057] Then, as shown in Figure 4D, the washer 23 of the anchor 20 is pushed toward the rigid member 100 using a special jig (not shown). As the washer 23 is pushed in, each of the expanding pieces 22b of the expanding portion 22 of the anchor 20 is expanded by the tapered portion 21b and positioned within the enlarged-bottomed hole 100a. This fixes the anchor 20 to the rigid member 100.

[0058] However, in this example, it is time-consuming because it is necessary to drill an enlarged-bottom hole 100a in the rigid member 100.

[0059] Therefore, in this embodiment, the anchor 20 can be installed without drilling an enlarged-bottom hole by applying the anchor 20 to wood 10, which is not intended as a material to which the anchor 20 is applied.

[0060] <This embodiment> Figures 5A to 5C are explanatory diagrams of the method for attaching the anchor 20 in this embodiment. In this embodiment, unlike the rigid member 100, the wood 10 undergoes indentation deformation due to partial compression, and as mentioned above, the anchor 20 is attached to a flexible material (wood 10) that is not intended as an application material for the anchor 20.

[0061] First, as shown in Figure 5A, a straight hole (hole 12) of a predetermined diameter is drilled to a predetermined depth on the back side of the wood 10 using a special tool 200 (such as a drill). The hole 12 has a hole bottom 12a and a hole wall 12b that intersects with and is continuous with the hole bottom 12a. The diameter of the hole 12 is approximately the same as the maximum diameter d0 of the tapered portion 21b of the anchor 20, and is sized to fit the expanding portion 22.

[0062] Next, as shown in Figure 5B, the end face of the tapered portion 21b of the anchor 20 is positioned opposite the bottom of the hole 10a in the wood 10 (hole bottom 12a), and the anchor 20 is inserted (fitted) into the hole 10a.

[0063] Next, as shown in Figure 5C, the washer 23 of the anchor 20 is pushed towards the wood 10 using a special jig (not shown). As the washer 23 is pushed in, the expanding portion 22 (more specifically, the expanding piece 22b) of the anchor 20 is widened (expanded) by the inclined surface of the tapered portion 21b. As a result, the expanding portion 22 (specifically, the expanding piece 22b) is embedded in the hole wall 12b of the hole 12 in the wood 10. Therefore, the hole 12 formed in the wood 10 takes on a shape with a widened bottom (hole 12' shown in Figure 1), and the anchor 20 is fixed (anchored) to the wood 10.

[0064] In this embodiment, the expanding portion 22 (expanding piece 22b) of the anchor 20 is embedded in the hole 12 (hole wall 12b) of the wood 10. Therefore, there is no need to excavate an enlarged-bottom hole as in the reference example, making installation easier. Furthermore, the part of the wood 10 that is supported by the expanding portion 22 (expanding piece 22b) tries to return to its original position, and this force exerts a joint load-bearing capacity (anchor effect) as shown in Figure 5C.

[0065] In this way, the anchor 20 can be easily attached to the back of the wood 10. Also, since the threaded portion 21a of the anchor 20 protrudes from the wood 10, the wood 10 can be easily attached to a base material (for example, a ceiling suspension hardware base) using this threaded portion 21a. Therefore, the wood 10 can be easily installed as an interior material.

[0066] Furthermore, since the anchor 20 is attached to the back side of the wood 10, the anchor 20 is not visible from the front side (indoor side). Therefore, the aesthetic appeal is not compromised.

[0067] Furthermore, although the wood 10 is flame-retardant wood (non-combustible or semi-non-combustible material) and its mass is increased in addition to the original mass of the wood, in this embodiment the anchor 20 can be securely fixed to the wood 10, improving not only the corrosion of the metal and the instability of the adhesive performance, but also the risk of heavy objects falling due to earthquakes, etc.

[0068] <<First variation>> Figures 6A and 6B are explanatory diagrams of the first modified example.

[0069] In this first modified example, as shown in Figure 6A, an adhesive sheet 40 is placed between the anchor 20 and the hole 12 in the wood 10. The adhesive sheet 40 is made of a soft material (for example, a silicone resin-based sheet).

[0070] Then, as shown in Figure 6B, the anchor 20 can be attached to the wood 10 by pushing it into the hole 12, similar to the case in Figure 5C. At this time, the adhesive sheet 40 is sandwiched between the anchor 20 and the wood 10, which helps to create a better bond between the anchor 20 and the wood 10 and further enhances adhesion.

[0071] Furthermore, as mentioned above, the adhesive sheet 40 is a soft sheet, so it can follow the deformation of the hole 12 caused by the expansion of the expansion section 22 (deformation into an expanded-bottom hole 12'). Also, because the adhesive sheet 40 is in sheet form, it is easier to work with compared to using irregularly shaped materials (for example, epoxy resin adhesives or sealants).

[0072] <<Second variation>> Figure 7 is an explanatory diagram of the second modified example.

[0073] In this second modification, a screw hole (not shown) is made in the washer 23, and the washer 23 is fixed to the wood 10 using a screw 50. In other words, the washer 23 is screwed to the wood 10 by the screw 50. Although there is only one screw 50 in the diagram, it is not limited to one, and multiple screws may be provided as needed.

[0074] As mentioned above, the diameter d2 of the anchor shaft hole 23a of the washer 23 is smaller than the outer diameter of the expanding portion 22. Therefore, by fixing the washer 23 to the wood 10, the expanding portion 22 cannot be removed from the wood 10. Thus, a fail-safe mechanism can be provided.

[0075] ===Other=== The embodiments described above are provided to facilitate understanding of the present invention and are not intended to limit its interpretation. The present invention can be modified and improved without departing from its spirit, and it goes without saying that the present invention includes equivalents thereof.

[0076] In the embodiments described above, the case in which wood 10 is applied to a ceiling finish was explained, but the invention is not limited to this, and can be similarly applied to, for example, a wall finish.

[0077] Furthermore, although the above embodiment described the case where the wood 10 is arranged in a planar manner, the same can be applied to the case where it is arranged linearly.

[0078] Furthermore, although the anchor 20 in the above-described embodiment was equipped with a plate-shaped washer 23, it is not limited to this. For example, a cylindrical member may also be used. In this case as well, the expanding portion 22 can be expanded by pushing the expanding portion 22 towards the tapered portion 21b using the cylindrical member.

[0079] Furthermore, the anchor 20 can be of an expanding type (expanded base type), and there are no particular limitations on the method of expansion or its shape. [Explanation of symbols]

[0080] 10 wood 12,12´ hole 12a,12a´ Hole bottom 12b,12b´ Hole wall 20 Anchors 21 Anchor shaft 21a Threaded part 21b Tapered section 22 Expanding section 22a base 22b Expansion piece 23 Washer (plate part) 23a Anchor shaft hole 40 Adhesive Sheets 50 screws 100 Rigid members 100a hole 200 specialized tools

Claims

1. A piece of wood from which a hole has been excavated, having a hole bottom and a hole wall that intersects and is continuous with the hole bottom, An anchor having an expanding portion that is embedded in the aforementioned hole, Equipped with, The expanded portion is embedded in the hole wall of the wood. A wood mounting structure characterized by the following features.

2. The wood mounting structure according to claim 1, The anchor comprises a plate portion with a wider diameter than the hole, The plate portion has an anchor shaft hole with a smaller diameter than the expanded portion. A wood mounting structure characterized by the following.

3. The wood mounting structure according to claim 2 The aforementioned board is fastened to the wood with screws. A wood mounting structure characterized by the following.

4. The wood mounting structure according to claim 1, The aforementioned anchor has a threaded portion, The screw portion protrudes from the wood. A wood mounting structure characterized by the following features.

5. The wood mounting structure according to claim 1 The hole bottom and the hole wall are covered with an adhesive sheet, The adhesive sheet is sandwiched between the wood and the anchor. A wood mounting structure characterized by the following.

6. A method for installing an anchor having an expanding portion into a piece of wood from which a hole has been excavated, the hole having a bottom and a hole wall intersecting and continuous with the bottom, By inserting the expanding portion into the hole and expanding it, the expanding portion is embedded in the hole wall of the wood. A method for attaching wood, characterized by the features described above.

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