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JP6733864B2 - Warp prevention structure for preventing warpage of a flat plate made of wood or a wooden member, and warp prevention method - Google Patents
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JP6733864B2 - Warp prevention structure for preventing warpage of a flat plate made of wood or a wooden member, and warp prevention method - Google Patents

Warp prevention structure for preventing warpage of a flat plate made of wood or a wooden member, and warp prevention method Download PDF

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JP6733864B2
JP6733864B2 JP2018024072A JP2018024072A JP6733864B2 JP 6733864 B2 JP6733864 B2 JP 6733864B2 JP 2018024072 A JP2018024072 A JP 2018024072A JP 2018024072 A JP2018024072 A JP 2018024072A JP 6733864 B2 JP6733864 B2 JP 6733864B2
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warp prevention
flat plate
prevention member
warp
plate
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JP2019136992A (en
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圭一 池田
圭一 池田
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FRONTEC CO., LTD.
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本発明は、テーブルや机の天板、およびドアなどの木材または木質部材からなる平板の反りを防止するための反り防止構造、および反り防止方法に関する。 The present invention also relates tabletop or desk, and warp prevention structure for preventing the warping of the flat plate made of wood or wooden members such as doors, and warp prevention how.

従来、テーブルや机の天板、およびドアなどの木材または木質材料からなる平板には、湿度や温度の変化などによる膨張収縮によって反りが生じることがある。この反りを防止するための構造および方法として、一般的には、例えば、天板を構成する木の繊維方向に直交する方向などの反りが生じる方向に沿って、T字型もしくはL字型などの金具や木製の反り止などを板状の天板の表面にビスで固定させる反り防止構造および反り防止方法が採られている。 Conventionally, a top plate of a table or a desk and a flat plate made of wood or a wood material such as a door may warp due to expansion and contraction due to changes in humidity and temperature. As a structure and a method for preventing the warp, for example, a T-shape or an L-shape is generally provided along a direction in which the warp occurs, such as a direction orthogonal to the fiber direction of the tree forming the top plate. A warp prevention structure and a warp prevention method are employed in which metal fittings and wooden warp stoppers are fixed to the surface of a plate-shaped top plate with screws.

しかしながら、ビスによる固定は、時間の経過や使用などによって徐々に緩んでいく。その緩みに伴って、板状の木質部材に対する反り防止の効果も弱まっていく。 However, the fixing with screws gradually loosens with the passage of time and use. Along with the loosening, the effect of preventing warpage of the plate-shaped wooden member also weakens.

本発明は上記事情に鑑みてなされたものである。すなわち、その課題とするところは、反り防止効果の持続性に優れた反り防止構造、および反り防止方法を提供することである。 The present invention has been made in view of the above circumstances. That is, it is an object is to provide warp prevention structure excellent in sustainability of anti-curl effect, and anti-curl how.

上記課題の解決を目的としてなされた本発明に係る反り防止構造は、
木材または木質材料からなる平板の反りを防止する反り防止構造であって、
一方向に延びて形成された反り防止部材が、前記平板に反りが生じ得る所望の方向に沿って前記平板に配置され、
前記反り防止部材は、強化繊維プラスチックからなり、前記一方向に沿って形成された板状のフランジ部と、前記一方向に沿って前記フランジ部の一方の面から直交または斜めに立設された板状のウェブ部と、を有し、
前記平板には、前記フランジ部の他方の面が前記平板の表面と略面一となり、且つ、前記ウェブ部の先端側から前記反り防止部材の断面形状に沿って前記平板に挿入できるような挿入溝が形成され、
前記挿入溝に挿入された前記反り防止部材が、前記挿入溝に挿入されている表面全体で前記平板と接着剤によって接着されていることを特徴とする
また、上記課題の解決を目的としてなされた本発明に係る反り防止方法は、
木材または木質材料からなる平板の反りを防止する反り防止方法であって、
強化繊維プラスチックで構成され、一方向に延びて形成された反り防止部材は、前記一方向に沿って形成された板状のフランジ部と、前記一方向に沿って前記フランジ部の一方の面から直交または斜めに立設された板状のウェブ部と、を有し、
前記平板には、前記フランジ部の他方の面が前記平板の表面と略面一となり、且つ、前記ウェブ部の先端側から前記反り防止部材の断面形状に沿って前記平板に挿入できるような挿入溝が形成され、
前記挿入溝に接着剤を充填させる接着剤充填工程と、
前記接着剤が充填されている前記挿入溝に前記反り防止部材を挿入する挿入工程と、を有することを特徴とする。
The warp prevention structure according to the present invention made for the purpose of solving the above problems,
A warp prevention structure for preventing warpage of a flat plate made of wood or wood material,
A warp prevention member extending in one direction is arranged on the flat plate along a desired direction in which the flat plate may be warped ,
The warp prevention member is made of a reinforced fiber plastic, and is erected orthogonally or obliquely from one surface of the flange portion and a plate-like flange portion formed along the one direction and along the one direction. And a plate-shaped web portion,
Insertion into the flat plate such that the other surface of the flange portion is substantially flush with the surface of the flat plate, and can be inserted into the flat plate from the tip end side of the web portion along the cross-sectional shape of the warp prevention member. A groove is formed,
The warp prevention member inserted into the insertion groove is bonded to the flat plate with an adhesive over the entire surface inserted into the insertion groove .
Further, the warp prevention method according to the present invention made for the purpose of solving the above problems,
A method for preventing warpage of a flat plate made of wood or a wood material,
The warp prevention member formed of reinforced fiber plastic and formed to extend in one direction is a plate-shaped flange portion formed along the one direction, and from one surface of the flange portion along the one direction. And a plate-shaped web portion that is erected orthogonally or diagonally,
Insertion into the flat plate such that the other surface of the flange portion is substantially flush with the surface of the flat plate, and can be inserted into the flat plate from the tip end side of the web portion along the cross-sectional shape of the warp prevention member. A groove is formed,
An adhesive filling step of filling the insertion groove with an adhesive,
And an insertion step of inserting the warp prevention member into the insertion groove filled with the adhesive .

本発明に係る反り防止構造、および反り防止方法によれば、強化繊維プラスチックからなり、一方向に沿って延びて形成された反り防止部材を、木材または木質材料からなる平板に反りが生じ得る所望の方向に沿って接着剤で接着するので、反り防止効果の持続性を向上させることができる According to the warp prevention structure and the warp prevention method of the present invention, a warp prevention member formed of a reinforced fiber plastic and extending in one direction is preferably used to cause warpage of a flat plate made of wood or a wood material. Since the adhesive is adhered along the direction of, the durability of the warp prevention effect can be improved .

(A)は本発明の第1実施形態に係る反り防止部材の斜視図であり、(B)は同反り防止部材の正面図であり、(C)は同反り防止部材の平面図である。(A) is a perspective view of the warp prevention member according to the first embodiment of the present invention, (B) is a front view of the warp prevention member, and (C) is a plan view of the warp prevention member. (A)は同反り防止部材を用いた平板の反り防止構造を表した斜視図であり、(B)は図2(A)のA−A断面図であり、(C)は図2(B)の平板を抽出した図である。(A) is a perspective view showing a warp prevention structure of a flat plate using the same warp prevention member, (B) is a sectional view taken along the line AA of FIG. 2(A), and (C) is shown in FIG. 2(B). It is the figure which extracted the flat plate of FIG. 同反り防止部材を用いた平板の反り防止方法を表す図である。It is a figure showing the warp prevention method of the flat plate using the same warp prevention member. 同反り防止部材を用いた平板の反り防止方法であり、図3の続きを表す図である。It is a method of preventing warpage of a flat plate using the same warp prevention member, and is a view showing a continuation of FIG. 3. (A)は本発明の第2実施形態に係る反り防止部材の斜視図であり、(B)は同反り防止部材の正面図であり、(C)は同反り防止部材の平面図である。(A) is a perspective view of a warp prevention member according to a second embodiment of the present invention, (B) is a front view of the warp prevention member, and (C) is a plan view of the warp prevention member. (A)は同反り防止部材を用いた平板の反り防止構造を表した底面図、(B)は図6(A)のB−B断面図であり、(C)は図6(B)の平板を抽出した図である。6A is a bottom view showing a warp prevention structure of a flat plate using the same warp prevention member, FIG. 6B is a sectional view taken along line BB of FIG. 6A, and FIG. It is the figure which extracted the flat plate. (A)は本発明の第3実施形態に係る反り防止部材の斜視図であり、(B)は同反り防止部材の正面図であり、(C)は同反り防止部材の平面図である。(A) is a perspective view of a warp prevention member according to a third embodiment of the present invention, (B) is a front view of the warp prevention member, and (C) is a plan view of the warp prevention member. (A)は同反り防止部材を用いた平板の反り防止構造を表した底面図、(B)は図8(A)のC−C断面図であり、(C)は図8(B)の平板を抽出した図である。8A is a bottom view showing a flat plate warp prevention structure using the same warp prevention member, FIG. 8B is a cross-sectional view taken along the line CC of FIG. 8A, and FIG. It is the figure which extracted the flat plate. 本発明の第1実施形態に係る反り防止部材を用いた平板の反り防止構造の変更例を表した斜視図である。FIG. 6 is a perspective view showing a modified example of the flat plate warp prevention structure using the warp prevention member according to the first embodiment of the present invention.

(第1実施形態)
最初に、本発明の反り防止部材に係る第1実施形態を構成する反り防止部材1について説明する。図1に示すように、反り防止部材1は、材軸方向に長く延びて棒状に成形されている。反り防止部材1の断面形状は、T字状であり、材軸方向に一定である。
(First embodiment)
First, the warp prevention member 1 which comprises 1st Embodiment which concerns on the warp prevention member of this invention is demonstrated. As shown in FIG. 1, the warp prevention member 1 extends in the axial direction of the material and is formed into a rod shape. The cross-sectional shape of the warp prevention member 1 is T-shaped and constant in the material axis direction.

反り防止部材1の材料は、炭素繊維強化プラスチックである。反り防止部材1に用いられる炭素繊維は適宜に設定可能である。反り防止部材1に用いられる炭素繊維として、例えばPAN系炭素繊維やピッチ系炭素繊維を適用することができる。さらに、反り防止部材1に用いられるマトリックス樹脂も適宜に設定可能である。反り防止部材1に用いられるマトリックス樹脂として、例えば、エポキシ樹脂などの熱硬化性樹脂やナイロンなどの熱可塑性樹脂を適用することができる。 The material of the warp prevention member 1 is carbon fiber reinforced plastic. The carbon fiber used for the warp prevention member 1 can be set appropriately. As the carbon fiber used for the warp prevention member 1, for example, PAN-based carbon fiber or pitch-based carbon fiber can be applied. Further, the matrix resin used for the warp prevention member 1 can be set appropriately. As the matrix resin used for the warp prevention member 1, for example, a thermosetting resin such as an epoxy resin or a thermoplastic resin such as nylon can be applied.

反り防止部材1を構成する炭素繊維強化プラスチックの機械的特性は、補強対象によって適宜に設定される。その機械的特性の一例を挙げると、例えば、反り防止部材1の材軸方向に対する炭素繊維強化プラスチックの引張強度は、400〜2000MPaであり、反り防止部材1の材軸方向に対する炭素繊維強化プラスチックの弾性率は、30〜300GPaであり、炭素繊維強化プラスチックの密度は、1.2〜1.8g/cmである。 The mechanical properties of the carbon fiber reinforced plastic forming the warp prevention member 1 are appropriately set depending on the object of reinforcement. As an example of the mechanical properties, for example, the tensile strength of the carbon fiber reinforced plastic in the material axis direction of the warp prevention member 1 is 400 to 2000 MPa, and the tensile strength of the carbon fiber reinforced plastic in the material axis direction of the warp prevention member 1 is The elastic modulus is 30 to 300 GPa, and the density of the carbon fiber reinforced plastic is 1.2 to 1.8 g/cm 3 .

反り防止部材1は、断面形状「T」の縦線部分であるウェブ部11と、断面形状「T」の横線部分であるフランジ部12と、を有する。よって、反り防止部材1では、ウェブ部11とフランジ部12とが直交している。 The warp prevention member 1 has a web portion 11 that is a vertical line portion having a cross-sectional shape “T” and a flange portion 12 that is a horizontal line portion having a cross-sectional shape “T”. Therefore, in the warp prevention member 1, the web portion 11 and the flange portion 12 are orthogonal to each other.

ウェブ部11は、主として、補強対象である平板状の木質部材の反りに抵抗し、反りに対する補強機能の骨格を担う。フランジ部12は、主として、補強対象である平板状の木質部材に確実に且つ安定的に定着させつつ、さらに反りに対する補強機能を高めるための機能を担う。 The web portion 11 mainly resists warpage of the flat plate-shaped wood member to be reinforced, and serves as a skeleton having a reinforcing function against warpage. The flange portion 12 mainly has a function of reliably and stably fixing the plate-shaped wood member to be reinforced and further enhancing a function of reinforcing warpage.

ウェブ部11およびフランジ部12には、基本的に反り防止部材1の材軸方向に引き揃えられた多数の炭素繊維と、材軸方向に直交する方向に揃えられた多数の炭素繊維と、が含まれている。言い換えると、ウェブ部11は、繊維方向が0度と90度の2方向の炭素繊維強化プラスチックからなる。なお、ウェブ部11の側面、およびフランジ部12のウェブ部11が設けられている側の平面は粗化処理が施されている。 The web portion 11 and the flange portion 12 are basically provided with a large number of carbon fibers aligned in the material axis direction of the warp prevention member 1 and a large number of carbon fibers aligned in a direction orthogonal to the material axis direction. include. In other words, the web portion 11 is made of carbon fiber reinforced plastic having two fiber directions of 0 degree and 90 degrees. The side surface of the web portion 11 and the flat surface of the flange portion 12 on the side where the web portion 11 is provided are roughened.

反り防止部材1の寸法は、反り防止部材1によって補強される補強対象物の用途や寸法に応じて適宜に設定可能である。反り防止部材1の寸法の一例として、例えば、反り防止部材1が家庭用のテーブルや机などの一般的な家具の天板に用いられる場合、ウェブ部11の厚さt11を2.5mmに設定し、ウェブ部11の高さh11を24mmに設定し、フランジ部12の厚さt12を2.5mmに設定し、フランジ部12の幅w12を30mmに設定することができる。 The size of the warp prevention member 1 can be appropriately set according to the application and size of the reinforcing object to be reinforced by the warp prevention member 1. As an example of the size of the warp prevention member 1, for example, when the warp prevention member 1 is used as a top plate of general furniture such as a table or a desk for home use, the thickness t11 of the web portion 11 is set to 2.5 mm. However, the height h11 of the web portion 11 can be set to 24 mm, the thickness t12 of the flange portion 12 can be set to 2.5 mm, and the width w12 of the flange portion 12 can be set to 30 mm.

次に、反り防止部材1を用いた反り防止構造について説明する。例えば、図2に示すように、反り防止部材1を用いて、全体的に矩形状に成形された木製の平板2の短辺方向に沿った反りを防止する反り防止構造について説明する。 Next, a warp prevention structure using the warp prevention member 1 will be described. For example, as shown in FIG. 2, a warp prevention structure for preventing a warp along a short side direction of a wooden flat plate 2 formed in a generally rectangular shape by using a warp prevention member 1 will be described.

平板2は、4枚の板状部材21で構成されている。各板状部材21は平面視細長い矩形状に成形されている。板状部材21の繊維方向は長さ方向に平行である。そして、4枚の板状部材21は、長辺方向の両端が揃えられた状態で幅方向に隙間なく並び、隣接する板状部材21と接着剤で接着されている。よって、板状部材21の繊維方向が、矩形状に成形された平板2の長さ方向に一致している。 The flat plate 2 is composed of four plate-shaped members 21. Each plate-shaped member 21 is formed in an elongated rectangular shape in plan view. The fiber direction of the plate member 21 is parallel to the length direction. The four plate-shaped members 21 are arranged in the width direction without any gap in the state where both ends in the long side direction are aligned, and are bonded to the adjacent plate-shaped members 21 with an adhesive. Therefore, the fiber direction of the plate-shaped member 21 matches the length direction of the flat plate 2 formed in a rectangular shape.

平板2の一方の表面には、反り防止部材1をウェブ部11側から平板2に対して垂直に挿入するための挿入溝22が形成されている。挿入溝22は、4枚の板状部材21にまたがって形成されている。挿入溝22の両端は、平板2の短辺方向における同じ側の端から所定距離離れている。詳細には、挿入溝22の一方の端と平板2の短辺方向における一方の端との距離と、挿入溝22の他方の端と平板2の短辺方向における他方の端との距離と、は板状部材21の幅方向の半分の長さで同一である。すなわち、一方の端に配置された板状部材21の幅方向の中央から他方の端に配置された板状部材21の幅方向の中央にかけて板状部材21の繊維方向に直交する挿入溝22が形成されている。そして、平板2においては、このような挿入溝22が平板2の長さ方向に沿って所定間隔をおいて複数本形成されている。 An insertion groove 22 for vertically inserting the warp prevention member 1 into the flat plate 2 from the web portion 11 side is formed on one surface of the flat plate 2. The insertion groove 22 is formed across the four plate-shaped members 21. Both ends of the insertion groove 22 are separated from the ends of the flat plate 2 on the same side in the short side direction by a predetermined distance. Specifically, the distance between one end of the insertion groove 22 and one end of the flat plate 2 in the short side direction, the distance between the other end of the insertion groove 22 and the other end of the flat plate 2 in the short side direction, Are the same in the half length of the plate member 21 in the width direction. That is, the insertion groove 22 orthogonal to the fiber direction of the plate-shaped member 21 extends from the center in the width direction of the plate-shaped member 21 arranged at one end to the center in the width direction of the plate-shaped member 21 arranged at the other end. Has been formed. Then, in the flat plate 2, a plurality of such insertion grooves 22 are formed at predetermined intervals along the length direction of the flat plate 2.

挿入溝22は、ウェブ部11が平板2に垂直に挿入されるウェブ部溝221と、フランジ部12が平板2に平行に挿入されるフランジ部溝222と、で構成されている。 The insertion groove 22 includes a web portion groove 221 in which the web portion 11 is inserted perpendicularly to the flat plate 2, and a flange portion groove 222 in which the flange portion 12 is inserted in parallel to the flat plate 2.

フランジ部溝222の平面視形状はフランジ部12の平面視形状と大体同じである。フランジ部溝222の幅w222は、フランジ部12の幅w12よりも0.25mm〜0.5mm程度大きい。また、フランジ部溝222の底は平坦に成形されている。そして、フランジ部溝222の深さd222は、フランジ部12の厚さt12よりも0.25mm〜0.5mm程度大きい。これは、フランジ部12を確実にフランジ部溝222に挿入させるためである。 The plan view shape of the flange portion groove 222 is almost the same as the plan view shape of the flange portion 12. The width w222 of the flange groove 222 is larger than the width w12 of the flange 12 by about 0.25 mm to 0.5 mm. Further, the bottom of the flange groove 222 is formed flat. The depth d222 of the flange groove 222 is larger than the thickness t12 of the flange 12 by about 0.25 mm to 0.5 mm. This is for surely inserting the flange portion 12 into the flange groove 222.

また、ウェブ部溝221は、フランジ部溝222の底の幅方向中央から平板2に垂直に形成されている。すなわち、ウェブ部溝221とフランジ部溝222とは連通している。ウェブ部溝221の幅w221は、ウェブ部11の厚さt11よりも0.25mm〜0.5mm程度大きい。また、ウェブ部溝221の深さd221は、ウェブ部11の高さh11よりも0.25mm〜0.5mm程度大きい。これは、ウェブ部11を確実にウェブ部溝221に挿入させるためである。 The web groove 221 is formed perpendicular to the flat plate 2 from the center of the bottom of the flange groove 222 in the width direction. That is, the web portion groove 221 and the flange portion groove 222 communicate with each other. The width w221 of the web portion groove 221 is larger than the thickness t11 of the web portion 11 by about 0.25 mm to 0.5 mm. Further, the depth d221 of the web portion groove 221 is larger than the height h11 of the web portion 11 by about 0.25 mm to 0.5 mm. This is for surely inserting the web portion 11 into the web portion groove 221.

挿入溝22に挿入された反り防止部材1は、木材用の接着剤23によって平板2と接着されている。詳細には、反り防止部材1の材軸方向において、ウェブ部溝221の内壁と、反り防止部材1のウェブ部11の表面とが、接着剤23によって接着されている。さらに、反り防止部材1の材軸方向において、フランジ部溝222の内壁と、反り防止部材1のフランジ部12のウェブ部11が形成されている側の表面と両側面とが、接着剤23によって接着されている。すなわち、反り防止部材1は、平板2に埋設された状態で、接着剤23によって平板2と強固に一体化されている。 The warp prevention member 1 inserted in the insertion groove 22 is adhered to the flat plate 2 with an adhesive 23 for wood. Specifically, in the material axis direction of the warp prevention member 1, the inner wall of the web portion groove 221 and the surface of the web portion 11 of the warp prevention member 1 are bonded by the adhesive 23. Further, in the material axial direction of the warp prevention member 1, the inner wall of the flange groove 222 and the surface of the flange portion 12 of the warp prevention member 1 on the side where the web portion 11 is formed and both side surfaces are formed by the adhesive 23. It is glued. That is, the warp prevention member 1 is firmly integrated with the flat plate 2 by the adhesive 23 while being embedded in the flat plate 2.

なお、接着剤23の材料は、反り防止部材1と平板2が確実に接着できれば適宜に設定できる。例えば、接着剤23を、酢酸ビニル樹脂エマルジョン型の木工用接着剤で構成することができる。その他に、接着剤23を構成する材料として、エポキシ樹脂系の木工用接着剤、エポキシ樹脂、シリコーン樹脂、ポリウレア樹脂などの熱硬化性樹脂やポリエチレン、およびポリアミド樹脂などの熱可塑性樹脂を適用することができる。 The material of the adhesive 23 can be appropriately set as long as the warp prevention member 1 and the flat plate 2 can be reliably bonded. For example, the adhesive 23 can be made of a vinyl acetate resin emulsion type adhesive for woodworking. In addition, as a material forming the adhesive 23, an epoxy resin-based adhesive for woodworking, a thermosetting resin such as an epoxy resin, a silicone resin, a polyurea resin, or a thermoplastic resin such as polyethylene or a polyamide resin may be applied. You can

次に、板状の木質部材の反りを防止するための反り防止方法について説明する。具体的には、例えば、図3(A)に示すように、前述のウェブ部溝221およびフランジ部溝222が形成されていない状態の平板2について、前述の反り防止部材1を用いて、平板2の短辺方向に沿って発生する反りを防止するための反り防止方法について説明する。 Next, a warp prevention method for preventing the warp of the plate-shaped wood member will be described. Specifically, for example, as shown in FIG. 3(A), for the flat plate 2 in the state where the web portion groove 221 and the flange portion groove 222 are not formed, the flat plate 2 is formed by using the warp prevention member 1 described above. A warp prevention method for preventing warpage that occurs along the short side direction of No. 2 will be described.

最初に、図3(B)に示すように、平板2の一方の表面に、所定の工具を用いて、前述のフランジ部12を挿入させるフランジ部溝222を平板2の長辺方向に所定間隔をおいて複数個形成する。ここで、各フランジ部溝222は、一方の端に配置された板状部材21の幅方向の中央から他方の端に配置された板状部材21の幅方向の中央にかけて形成する。 First, as shown in FIG. 3(B), a predetermined tool is used on one surface of the flat plate 2 to form a flange groove 222 into which the above-described flange 12 is inserted, at predetermined intervals in the long side direction of the flat plate 2. A plurality of them are formed at intervals. Here, each flange groove 222 is formed from the center in the width direction of the plate-shaped member 21 arranged at one end to the center in the width direction of the plate-shaped member 21 arranged at the other end.

次に、図3(C)に示すように、フランジ部溝222の底の幅方向中心から垂直に、所定の工具を用いて、前述のウェブ部11を挿入させるウェブ部溝221を形成する。ここで、ウェブ部溝221は、その深さが大体、平板2の厚さの1/4〜3/4となるように形成する。すなわち、ウェブ部11の高さを大体平板2の厚さの1/4〜3/4に設定する。 Next, as shown in FIG. 3C, a web part groove 221 into which the above-mentioned web part 11 is inserted is formed vertically from the center of the bottom of the flange part groove 222 in the width direction by using a predetermined tool. Here, the web groove 221 is formed so that the depth thereof is approximately 1/4 to 3/4 of the thickness of the flat plate 2. That is, the height of the web portion 11 is set to approximately 1/4 to 3/4 of the thickness of the flat plate 2.

続いて、図4(A)に示すように、連通しているウェブ部溝221およびフランジ部溝222に接着剤23を充填させる。そして、図4(B)に示すように、接着剤23が充填しているウェブ部溝221およびフランジ部溝222に、ウェブ部11およびフランジ部12を挿入させる。すなわち、挿入溝22に反り防止部材1を挿入させる。この後は、図4(C)に示すように接着剤23が硬化するまで養生する。 Subsequently, as shown in FIG. 4A, the adhesive 23 is filled in the web groove 221 and the flange groove 222 which are in communication with each other. Then, as shown in FIG. 4B, the web part 11 and the flange part 12 are inserted into the web part groove 221 and the flange part groove 222 filled with the adhesive 23. That is, the warp prevention member 1 is inserted into the insertion groove 22. After this, as shown in FIG. 4C, the adhesive 23 is cured until it is cured.

このように、平板2の反りを防止するための反り防止方法は、図3(B)に示すようなフランジ部溝222を形成するフランジ部溝形成工程(工程1)、図3(C)に示すようなウェブ部溝221を形成するウェブ部溝形成工程(工程2)、図4(A)に示すような挿入溝22に接着剤23を充填させる接着剤充填工程(工程3)、図4(B)に示すような挿入溝22に反り防止部材1を挿入する反り防止部材挿入工程(工程4)、および図4(C)に示すような接着剤23を硬化させるために養生する養生工程(工程5)の5つの工程で構成されている。 As described above, the warp prevention method for preventing the warp of the flat plate 2 is performed in the flange groove forming step (step 1) of forming the flange groove 222 as shown in FIG. 3B, and in FIG. A web portion groove forming step (step 2) for forming the web portion groove 221 as shown in FIG. 4, an adhesive filling step (step 3) for filling the insertion groove 22 with the adhesive 23 as shown in FIG. A warp prevention member inserting step (step 4) of inserting the warp prevention member 1 into the insertion groove 22 as shown in FIG. 4B, and a curing step of curing the adhesive 23 as shown in FIG. 4C. It is composed of five steps (step 5).

なお、工程1と工程2とを合わせて、反り防止部材1を挿入させる挿入溝22を形成するための挿入溝形成工程とまとめて称することができる。また、工程3と工程4とを合わせて、反り防止部材1と平板2とを接着剤23で接着させる接着工程とまとめて称することができる。 The process 1 and the process 2 can be collectively referred to as an insertion groove forming process for forming the insertion groove 22 into which the warp prevention member 1 is inserted. Further, the step 3 and the step 4 can be collectively referred to as an adhesion step of adhering the warp prevention member 1 and the flat plate 2 with the adhesive 23.

養生工程の後、接着剤23が硬化することによって、反り防止部材1が接着剤23によって平板2と強固に一体化される。すなわち、工程1〜工程5がなされることによって、前述の反り防止部材1を用いた平板2の反り防止構造が構築される。反り防止部材1を用いた平板2の反り防止構造において、反り防止部材1のウェブ部11は、平板2の短辺方向と平行に且つ平板2に垂直な状態で平板2の内部に埋設され、平板2と一体化されている。そのため、ウェブ部11は、平板2を平板2に垂直な厚さ方向に拘束する。よって、平板2の短辺方向に沿った反りが防止される。 After the curing step, the adhesive 23 is cured, so that the warp prevention member 1 is firmly integrated with the flat plate 2 by the adhesive 23. That is, the steps 1 to 5 are performed to construct the warp prevention structure for the flat plate 2 using the warp prevention member 1 described above. In the warp prevention structure of the flat plate 2 using the warp prevention member 1, the web portion 11 of the warp prevention member 1 is embedded in the flat plate 2 in a state parallel to the short side direction of the flat plate 2 and perpendicular to the flat plate 2. It is integrated with the flat plate 2. Therefore, the web portion 11 restrains the flat plate 2 in the thickness direction perpendicular to the flat plate 2. Therefore, the warp of the flat plate 2 along the short side direction is prevented.

ここで、ウェブ部11と平板2とは接着剤23によって接着されているので、ネジやビスなどの固定具で接着させる場合に比べて反り防止部材1と平板2との接着力の持続性を高め、湿度や温度の変化などの経年変化による反り、さらには垂直荷重による反りに対する反り防止効果の減衰を抑えることができる。さらに、炭素繊維強化プラスチックの密度は鉄など金属の密度に比べて低いので、反り防止部材1が金属製である場合に比べて、反り防止部材1の自重の軽量化を図ることができる。そのため、反り防止部材1を挿入する側が平板2の底面となった場合であっても、反り防止部材1の自重による反り防止部材1と平板2との接着力の低下を抑えることができる。さらに、炭素繊維強化プラスチックの線膨張率は鉄など金属の線膨張率よりも低いので、反り防止部材1が金属製である場合に比べて、高い反り防止効果を発揮することができる。また、反り防止部材1の断面には、ウェブ部11の他に、ウェブ部11に直交するフランジ部12も含まれているので、反り防止部材1の平板2に対する定着性が高まると共に、曲げ剛性を高めることができる。また、各ウェブ部11の側面、およびフランジ部12のウェブ部11が設けられている側の平面は、腐食作用を利用しないで粗化処理されているので、反り防止部材1の平板2との接着剤23による接着性が向上する。 Here, since the web portion 11 and the flat plate 2 are adhered by the adhesive 23, the durability of the adhesive force between the warp prevention member 1 and the flat plate 2 is longer than that in the case where they are adhered by a fixture such as a screw or a screw. It is possible to suppress the deterioration of the warp prevention effect against the warpage due to the secular change such as the change of humidity and temperature, and the warp due to the vertical load. Furthermore, since the density of the carbon fiber reinforced plastic is lower than the density of metal such as iron, the weight of the warp prevention member 1 can be reduced as compared with the case where the warp prevention member 1 is made of metal. Therefore, even when the side on which the warp prevention member 1 is inserted is the bottom surface of the flat plate 2, it is possible to suppress a decrease in the adhesive force between the warp prevention member 1 and the flat plate 2 due to the weight of the warp prevention member 1. Further, since the linear expansion coefficient of the carbon fiber reinforced plastic is lower than the linear expansion coefficient of metal such as iron, it is possible to exhibit a higher warp prevention effect than when the warp prevention member 1 is made of metal. Further, the cross section of the warp prevention member 1 includes the flange portion 12 orthogonal to the web portion 11 in addition to the web portion 11, so that the fixing property of the warpage prevention member 1 on the flat plate 2 is increased and the bending rigidity is increased. Can be increased. Further, the side surface of each web portion 11 and the flat surface of the flange portion 12 on the side where the web portion 11 is provided are roughened without utilizing the corrosive action, so that the flat surface 2 of the warp prevention member 1 The adhesiveness of the adhesive 23 is improved.

(第2実施形態)
次に、本発明の反り防止部材に係る第2実施形態を構成する反り防止部材3について説明する。図5に示すように、反り防止部材3も、材軸方向に長く延びて棒状に成形されている。反り防止部材3の断面形状は、C字状であり、材軸方向に一定である。
(Second embodiment)
Next, the warp prevention member 3 which comprises 2nd Embodiment concerning the warp prevention member of this invention is demonstrated. As shown in FIG. 5, the warp prevention member 3 also extends in the axial direction of the material and is formed into a rod shape. The cross-sectional shape of the warp prevention member 3 is C-shaped and is constant in the material axis direction.

反り防止部材3の材料も、反り防止部材1と同様に炭素繊維強化プラスチックである。なお、反り防止部材1と同様に反り防止部材3に用いられる炭素繊維やマトリックス樹脂、さらには反り防止部材3に用いられる炭素繊維強化プラスチックの機械的特定も適宜に設定可能である。 The material of the warp prevention member 3 is also carbon fiber reinforced plastic like the warp prevention member 1. Similar to the warp prevention member 1, the carbon fiber and matrix resin used for the warp prevention member 3 and the mechanical specification of the carbon fiber reinforced plastic used for the warp prevention member 3 can be appropriately set.

反り防止部材3は、断面形状「C」の平行な2線部分である2本のウェブ部31と、2本のウェブ部31を両端で垂直に起立させているフランジ部32と、を有する。よって、反り防止部材3では、2本のウェブ部31とフランジ部32とが直交している。2本のウェブ部31は、主として、補強対象である平板状の木質部材の反りに抵抗し、反りに対する補強機能の骨格を担う。フランジ部32は、主として、補強対象である平板状の木質部材に確実に且つ安定的に定着させつつ、さらに反りに対する補強機能を高めるための機能を担う。 The warp prevention member 3 has two web portions 31 which are two parallel line portions having a cross-sectional shape “C”, and a flange portion 32 which vertically erects the two web portions 31 at both ends. Therefore, in the warp prevention member 3, the two web portions 31 and the flange portion 32 are orthogonal to each other. The two web portions 31 mainly resist the warpage of the flat plate-shaped wood member to be reinforced and serve as a skeleton of a reinforcing function against the warpage. The flange portion 32 mainly has a function of reliably and stably fixing the plate-shaped wooden member to be reinforced and further enhancing a reinforcing function against warpage.

各ウェブ部31およびフランジ部32は、ウェブ部11およびフランジ部12と同様に、繊維方向が0度と90度の2方向の炭素繊維強化プラスチックからなる。また、各ウェブ部31の側面、およびフランジ部32のウェブ部31が設けられている側の平面は粗化処理が施されている。 Like the web portion 11 and the flange portion 12, each of the web portion 31 and the flange portion 32 is made of carbon fiber reinforced plastic having two fiber directions of 0 degree and 90 degrees. The side surface of each web portion 31 and the flat surface of the flange portion 32 where the web portion 31 is provided are roughened.

反り防止部材3の寸法は、反り防止部材3によって補強される補強対象物の用途や寸法に応じて適宜に設定可能である。反り防止部材3の寸法の一例として、例えば、反り防止部材3が家庭用のテーブルや机などの一般的な家具の天板に用いられる場合、ウェブ部31の厚さt31を2.5mmに設定し、ウェブ部31の高さh31を20mmに設定し、フランジ部32の厚さt32を2.5mmに設定し、フランジ部32の幅w32を40mmに設定することができる。 The size of the warp prevention member 3 can be appropriately set according to the application and size of the reinforcing object to be reinforced by the warp prevention member 3. As an example of the size of the warp prevention member 3, for example, when the warp prevention member 3 is used as a top plate of general furniture such as a table or desk for home use, the thickness t31 of the web portion 31 is set to 2.5 mm. However, the height h31 of the web portion 31 can be set to 20 mm, the thickness t32 of the flange portion 32 can be set to 2.5 mm, and the width w32 of the flange portion 32 can be set to 40 mm.

次に、反り防止部材3を用いた反り防止構造について説明する。例えば、図6に示すように、反り防止部材3を用いて、全体的に矩形状に成形された木製の平板4の短辺方向に沿った反りを防止する反り防止構造について説明する。 Next, a warp prevention structure using the warp prevention member 3 will be described. For example, as shown in FIG. 6, a warp prevention structure for preventing a warp along a short side direction of a wooden flat plate 4 formed in a generally rectangular shape by using a warp prevention member 3 will be described.

平板4は、4枚の板状部材41で構成されている。各板状部材41は平面視細長い矩形状に成形されている。板状部材41の繊維方向は長さ方向に平行である。そして、4枚の板状部材41は、長辺方向の両端が揃えられた状態で幅方向に隙間なく並び、隣接する板状部材41と接着剤で接着されている。よって、板状部材41の繊維方向が、矩形状に成形された平板4の長さ方向に一致している。 The flat plate 4 is composed of four plate-shaped members 41. Each plate member 41 is formed in an elongated rectangular shape in plan view. The fiber direction of the plate member 41 is parallel to the length direction. The four plate-shaped members 41 are aligned in the width direction without gaps in the state where both ends in the long side direction are aligned, and are bonded to the adjacent plate-shaped members 41 with an adhesive. Therefore, the fiber direction of the plate member 41 matches the length direction of the flat plate 4 formed in a rectangular shape.

平板4の一方の表面には、反り防止部材3をウェブ部31側から平板4に対して垂直に挿入するための挿入溝42が形成されている。挿入溝42は、4枚の板状部材41にまたがって形成されている。挿入溝42についても、挿入溝22と同様に、一方の端に配置された板状部材41の幅方向の中央から他方の端に配置された板状部材41の幅方向の中央にかけて板状部材41の繊維方向に直交する挿入溝42が形成されている。そして、平板4においては、このような挿入溝42が平板4の長さ方向に沿って所定間隔をおいて複数本形成されている。 An insertion groove 42 for vertically inserting the warp prevention member 3 into the flat plate 4 from the web portion 31 side is formed on one surface of the flat plate 4. The insertion groove 42 is formed across the four plate-shaped members 41. Similarly to the insertion groove 22, the insertion groove 42 extends from the center in the width direction of the plate-shaped member 41 arranged at one end to the center in the width direction of the plate-shaped member 41 arranged at the other end. An insertion groove 42 orthogonal to the fiber direction of 41 is formed. Then, in the flat plate 4, a plurality of such insertion grooves 42 are formed at predetermined intervals along the length direction of the flat plate 4.

挿入溝42は、ウェブ部31が平板4に垂直に挿入される2本のウェブ部溝421と、フランジ部32が平板4に平行に挿入されるフランジ部溝422と、で構成されている。なお、反り防止部材3は、周方向に2本のウェブ部31と1本のフランジ部32とが一連となるように製造されている。換言すると、2本のウェブ部31と1本のフランジ部32との間は分断されておらず接合面はない。 The insertion groove 42 is composed of two web portion grooves 421 in which the web portion 31 is vertically inserted into the flat plate 4, and a flange portion groove 422 in which the flange portion 32 is inserted in parallel to the flat plate 4. The warp prevention member 3 is manufactured so that two web portions 31 and one flange portion 32 are arranged in series in the circumferential direction. In other words, the two web portions 31 and the one flange portion 32 are not divided and there is no joint surface.

フランジ部溝422の平面視形状はフランジ部32の背面側の平面視形状と大体同じである。フランジ部溝422の幅w422は、フランジ部32の幅w32よりも0.25mm〜0.5mm程度大きい。また、フランジ部溝422の底は平坦に成形されている。そして、フランジ部溝422の深さd422は、フランジ部32の厚さt32よりも0.25mm〜0.5mm程度大きい。これは、フランジ部32を確実にフランジ部溝422に挿入させるためである。 The planar view shape of the flange groove 422 is almost the same as the planar view shape of the rear surface side of the flange portion 32. The width w422 of the flange groove 422 is larger than the width w32 of the flange 32 by about 0.25 mm to 0.5 mm. The bottom of the flange groove 422 is formed flat. The depth d422 of the flange groove 422 is larger than the thickness t32 of the flange 32 by about 0.25 mm to 0.5 mm. This is for surely inserting the flange portion 32 into the flange groove 422.

また、ウェブ部溝421は、フランジ部溝422の底の幅方向両端から平板2に垂直に形成されている。すなわち、各ウェブ部溝421とフランジ部溝422とは連通している。各ウェブ部溝421の幅w421は、ウェブ部31の厚さt31よりも0.25mm〜0.5mm程度大きい。また、ウェブ部溝421の深さd421は、ウェブ部31の高さh31よりも0.25mm〜0.5mm程度大きい。これは、各ウェブ部31を確実に各ウェブ部溝421に挿入させるためである。 The web portion groove 421 is formed perpendicular to the flat plate 2 from both ends in the width direction of the bottom of the flange portion groove 422. That is, each web portion groove 421 and the flange portion groove 422 communicate with each other. The width w421 of each web portion groove 421 is larger than the thickness t31 of the web portion 31 by about 0.25 mm to 0.5 mm. Further, the depth d421 of the web portion groove 421 is larger than the height h31 of the web portion 31 by about 0.25 mm to 0.5 mm. This is for surely inserting each web portion 31 into each web portion groove 421.

挿入溝42に挿入された反り防止部材3は、木材用の接着剤43によって平板4と接着されている。詳細には、反り防止部材3の材軸方向において、各ウェブ部溝421の内壁と、各ウェブ部溝421に挿入された各ウェブ部31の表面とが、接着剤43によって接着されている。さらに、反り防止部材3の材軸方向において、フランジ部溝422の内壁と、反り防止部材3のフランジ部32のウェブ部31が形成されている側の表面と両側面とが、接着剤43によって接着されている。すなわち、反り防止部材3は、平板4に埋設された状態で、接着剤43によって平板4と強固に一体化されている。なお、接着剤43の材料は、接着剤23の場合と同様に、酢酸ビニル樹脂エマルジョン型の木工用接着剤などのように反り防止部材3と平板4を確実に接着させることができれば適宜に設定できる。 The warp prevention member 3 inserted in the insertion groove 42 is adhered to the flat plate 4 with an adhesive 43 for wood. Specifically, in the material axis direction of the warp prevention member 3, the inner wall of each web portion groove 421 and the surface of each web portion 31 inserted into each web portion groove 421 are adhered by an adhesive 43. Further, in the material axial direction of the warp prevention member 3, the inner wall of the flange groove 422 and the surface of the flange portion 32 of the warp prevention member 3 on the side where the web portion 31 is formed and both side surfaces are formed by the adhesive 43. It is glued. That is, the warp prevention member 3 is firmly integrated with the flat plate 4 by the adhesive 43 while being embedded in the flat plate 4. Note that the material of the adhesive 43 is appropriately set as in the case of the adhesive 23 as long as the warp prevention member 3 and the flat plate 4 can be reliably adhered like a vinyl acetate resin emulsion type adhesive for woodworking. it can.

反り防止部材3を用いた平板4の反り防止構造においても、反り防止部材3の2本のウェブ部31が、平板4の短辺方向と平行に且つ平板4に垂直な状態で平板4の内部に埋設され、平板4と一体化されている。そのため、2本のウェブ部31は、平板4を平板4に垂直な厚さ方向に拘束する。よって、平板4の短辺方向に沿った反りが防止される。 Also in the warp prevention structure of the flat plate 4 using the warp prevention member 3, the two web portions 31 of the warp prevention member 3 are inside the flat plate 4 in a state of being parallel to the short side direction of the flat plate 4 and perpendicular to the flat plate 4. And is integrated with the flat plate 4. Therefore, the two web portions 31 restrain the flat plate 4 in the thickness direction perpendicular to the flat plate 4. Therefore, the warp of the flat plate 4 along the short side direction is prevented.

また、ウェブ部31と平板4とが接着剤43によって接着されているので、ネジやビスなどの固定具で接着させる場合に比べて反り防止部材3と平板4との接着力の持続性を高め、湿度や温度の変化などの経年変化による反り、さらには垂直荷重による反りに対する反り防止効果の減衰を抑えることができる。さらに、第1実施形態の場合と同様に、反り防止部材3が炭素繊維強化プラスチックで構成されているので、反り防止部材3が金属製である場合に比べて、反り防止部材1の自重による反り防止部材1と平板2との接着力の低下を抑え、高い反り防止効果を図ることができる。また、反り防止部材3の断面には、ウェブ部31の他に、ウェブ部31に直交するフランジ部32も含まれているので、反り防止部材3の平板4に対する定着性が高まると共に、曲げ剛性を高めることができる。 Further, since the web portion 31 and the flat plate 4 are adhered by the adhesive 43, the durability of the adhesive force between the warp prevention member 3 and the flat plate 4 is increased as compared with the case of adhering with a fixing tool such as a screw or a screw. In addition, it is possible to suppress the warp prevention effect against the warpage due to changes over time such as changes in humidity and temperature, and further to the warpage due to vertical load. Further, as in the case of the first embodiment, since the warp prevention member 3 is made of carbon fiber reinforced plastic, the warp prevention member 1 is warped by its own weight as compared with the case where the warp prevention member 3 is made of metal. It is possible to suppress a decrease in the adhesive force between the prevention member 1 and the flat plate 2 and achieve a high warp prevention effect. In addition, since the cross section of the warp prevention member 3 includes the flange portion 32 orthogonal to the web portion 31 in addition to the web portion 31, the fixability of the warpage prevention member 3 to the flat plate 4 is increased and the bending rigidity is increased. Can be increased.

なお、第2実施形態に係る反り防止部材3を用いた平板4の反り防止方法については、第1実施形態に係る挿入溝22、ウェブ部溝221、フランジ部溝222、反り防止部材1、ウェブ部11、フランジ部12、および接着剤23を挿入溝42、ウェブ部溝421、フランジ部溝422、反り防止部材3、ウェブ部31、フランジ部32、および接着剤43に置き換えることで、第1実施形態の場合と同様に、実施することができる。 Regarding the warp prevention method of the flat plate 4 using the warp prevention member 3 according to the second embodiment, the insertion groove 22, the web groove 221, the flange groove 222, the warp prevention member 1, and the web according to the first embodiment are used. By replacing the portion 11, the flange portion 12, and the adhesive 23 with the insertion groove 42, the web portion groove 421, the flange portion groove 422, the warp prevention member 3, the web portion 31, the flange portion 32, and the adhesive 43, the first It can be implemented as in the case of the embodiment.

(第3実施形態)
次に、本発明の反り防止部材に係る第2実施形態を構成する反り防止部材5について説明する。図7に示すように、反り防止部材5も、材軸方向に長く延びて筒状に成形されている。反り防止部材5の断面形状は、正方形状の枠であり、材軸方向に一定である。
(Third Embodiment)
Next, the warp prevention member 5 which comprises 2nd Embodiment concerning the warp prevention member of this invention is demonstrated. As shown in FIG. 7, the warp prevention member 5 also extends in the axial direction of the material and is formed into a tubular shape. The cross-sectional shape of the warp prevention member 5 is a square frame and is constant in the material axis direction.

反り防止部材5の材料も、反り防止部材1,3と同様に炭素繊維強化プラスチックである。なお、反り防止部材1,3と同様に反り防止部材5に用いられる炭素繊維やマトリックス樹脂、さらには反り防止部材5に用いられる炭素繊維強化プラスチックの機械的特定も適宜に設定可能である。 The material of the warp prevention member 5 is also carbon fiber reinforced plastic like the warp prevention members 1 and 3. Similar to the warp prevention members 1 and 3, the carbon fiber and matrix resin used for the warp prevention member 5 and the mechanical specification of the carbon fiber reinforced plastic used for the warp prevention member 5 can be appropriately set.

反り防止部材5は、断面形状に係る正方形状の枠のうち平行な1組部分である2本のウェブ部51と、他方の平行な1組部分である2本のフランジ部52と、を有する。よって、反り防止部材5では、2本のウェブ部51と2本のフランジ部52とが相互に直交している。2本のウェブ部51は、主として、補強対象である平板状の木質部材の反りに抵抗し、反りに対する補強機能の骨格を担う。2本のフランジ部52は、主として、補強対象である平板状の木質部材に確実に且つ安定的に定着させつつ、さらに反りに対する補強機能を高めるための機能を担う。また、各ウェブ部51の外側面、およびフランジ部52の外側の平面は粗化処理が施されている。 The warp prevention member 5 has two web portions 51 which are one parallel set portion of the square frame relating to the cross-sectional shape, and two flange portions 52 which are the other parallel one set portion. .. Therefore, in the warp prevention member 5, the two web portions 51 and the two flange portions 52 are orthogonal to each other. The two web portions 51 mainly resist the warp of the flat plate-shaped wood member that is the reinforcement target, and serve as a skeleton of a reinforcing function against the warp. The two flange portions 52 mainly have a function of reliably and stably fixing the plate-shaped wood member to be reinforced and further enhancing a reinforcing function against warpage. Further, the outer surface of each web portion 51 and the outer surface of the flange portion 52 are roughened.

各ウェブ部51および各フランジ部52は、ウェブ部11およびフランジ部12などと同様に、繊維方向が0度と90度の2方向の炭素繊維強化プラスチックからなる。なお、反り防止部材5は、周方向に2本のウェブ部51と2本のフランジ部52とが一連となるように製造されている。換言すると、2本のウェブ部51と2本のフランジ部52とは分断されておらずこれらの間に接合箇所はない。 Each web portion 51 and each flange portion 52 are made of carbon fiber reinforced plastic having two fiber directions of 0 degree and 90 degrees, like the web portion 11 and the flange portion 12 and the like. The warp prevention member 5 is manufactured so that the two web portions 51 and the two flange portions 52 are arranged in series in the circumferential direction. In other words, the two web portions 51 and the two flange portions 52 are not divided and there is no joint between them.

また、反り防止部材5の寸法は、反り防止部材5によって補強される補強対象物の用途や寸法に応じて適宜に設定可能である。反り防止部材5の寸法の一例として、例えば、反り防止部材5が家の玄関用のドア本体に用いられる場合、ウェブ部51の厚さt51を2.5mmに設定し、ウェブ部51の高さh51を30mmに設定し、フランジ部52の厚さt52を2.5mmに設定し、フランジ部52の幅w52を30mmに設定することができる。 Further, the size of the warp prevention member 5 can be appropriately set according to the use and size of the reinforcing object to be reinforced by the warp prevention member 5. As an example of the dimensions of the warp prevention member 5, for example, when the warp prevention member 5 is used for a door main body for a house entrance, the thickness t51 of the web portion 51 is set to 2.5 mm, and the height of the web portion 51 is set. It is possible to set h51 to 30 mm, set the thickness t52 of the flange portion 52 to 2.5 mm, and set the width w52 of the flange portion 52 to 30 mm.

次に、反り防止部材5を用いた反り防止構造について説明する。例えば、図8に示すように、反り防止部材5を用いて、全体的に矩形状に成形された木製の平板6の短辺方向に沿った反りを防止する反り防止構造について説明する。 Next, a warp prevention structure using the warp prevention member 5 will be described. For example, as shown in FIG. 8, a warp prevention structure for preventing the warp along the short side direction of the wooden flat plate 6 formed in a generally rectangular shape by using the warp prevention member 5 will be described.

平板6は、4枚の板状部材61で構成されている。各板状部材61は平面視細長い矩形状に成形されている。板状部材61の繊維方向は長さ方向に平行である。そして、4枚の板状部材61は、長辺方向の両端が揃えられた状態で幅方向に隙間なく並び、隣接する板状部材61と接着剤で接着されている。よって、板状部材61の繊維方向が、矩形状に成形された平板6の長さ方向に一致している。 The flat plate 6 is composed of four plate-shaped members 61. Each plate-shaped member 61 is formed in an elongated rectangular shape in plan view. The fiber direction of the plate member 61 is parallel to the length direction. The four plate-shaped members 61 are aligned in the width direction without gaps in the state where both ends in the long side direction are aligned, and are bonded to the adjacent plate-shaped members 61 with an adhesive. Therefore, the fiber direction of the plate-shaped member 61 coincides with the length direction of the flat plate 6 formed in a rectangular shape.

平板6の両面には、反り防止部材5をウェブ部51の方から平板6に対して垂直に挿入するための挿入溝62が形成されている。挿入溝62は、4枚の板状部材61にまたがって形成されている。挿入溝62についても、挿入溝22,42と同様に、一方の端に配置された板状部材61の幅方向の中央から他方の端に配置された板状部材61の幅方向の中央にかけて板状部材61の繊維方向に直交する挿入溝62が形成されている。そして、平板6においては、平板6の一方の表面に形成された複数本の挿入溝62と、他方の表面に形成された複数本の挿入溝62とが、平板6の長さ方向に沿って所定間隔で交互に配置されるように形成されている。 Insertion grooves 62 for inserting the warp prevention member 5 perpendicularly to the flat plate 6 from the web portion 51 are formed on both surfaces of the flat plate 6. The insertion groove 62 is formed across the four plate-shaped members 61. Similarly to the insertion grooves 22 and 42, the insertion groove 62 also has a plate extending from the center in the width direction of the plate member 61 arranged at one end to the center in the width direction of the plate member 61 arranged at the other end. An insertion groove 62 that is orthogonal to the fiber direction of the strip-shaped member 61 is formed. Then, in the flat plate 6, a plurality of insertion grooves 62 formed on one surface of the flat plate 6 and a plurality of insertion grooves 62 formed on the other surface are arranged along the length direction of the flat plate 6. It is formed so as to be alternately arranged at a predetermined interval.

挿入溝62の平面視形状はフランジ部52の表面側の平面視形状と大体同じである。挿入溝62の幅w62は、フランジ部52の幅w52よりも0.25mm〜0.5mm程度大きい。また、挿入溝62の底は平坦に成形されている。そして、挿入溝62の深さd62は、2本のフランジ部52の厚さt52と各ウェブ部51の高さh51を足し合わせた長さ、すなわち、反り防止部材5の断面における外側の長さよりも0.25mm〜0.5mm程度大きい。これは、反り防止部材5を確実に挿入溝62に挿入させるためである。 The plan view shape of the insertion groove 62 is almost the same as the plan view shape of the front surface side of the flange portion 52. The width w62 of the insertion groove 62 is larger than the width w52 of the flange portion 52 by about 0.25 mm to 0.5 mm. Further, the bottom of the insertion groove 62 is formed flat. The depth d62 of the insertion groove 62 is the sum of the thickness t52 of the two flange portions 52 and the height h51 of each web portion 51, that is, the outer length in the cross section of the warp prevention member 5. Is as large as 0.25 mm to 0.5 mm. This is for surely inserting the warp prevention member 5 into the insertion groove 62.

挿入溝62に挿入された反り防止部材5は、木材用の接着剤63によって平板6と接着されている。詳細には、反り防止部材5の材軸方向において、挿入溝62の内壁と、反り防止部材5の2本のウェブ部51の外側表面、および1本のフランジ部52の外側表面とが、接着剤63によって接着されている。すなわち、反り防止部材5は、平板6に埋設された状態で、接着剤63によって平板6と強固に一体化されている。なお、接着剤63の材料は、接着剤23,43の場合と同様に、酢酸ビニル樹脂エマルジョン型の木工用接着剤などのように反り防止部材5と平板6を確実に接着させることができれば適宜に設定できる。 The warp prevention member 5 inserted into the insertion groove 62 is adhered to the flat plate 6 with an adhesive 63 for wood. Specifically, in the material axis direction of the warp prevention member 5, the inner wall of the insertion groove 62 is bonded to the outer surfaces of the two web portions 51 of the warp prevention member 5 and the outer surface of one flange portion 52. It is adhered by the agent 63. That is, the warp prevention member 5 is firmly integrated with the flat plate 6 by the adhesive 63 while being embedded in the flat plate 6. Note that the material of the adhesive 63 is appropriately selected as in the case of the adhesives 23 and 43 as long as the warp prevention member 5 and the flat plate 6 can be surely adhered to each other, such as a vinyl acetate resin emulsion type adhesive for woodworking. Can be set to.

反り防止部材5を用いた平板6の反り防止構造においても、反り防止部材5の2本のウェブ部51が、平板6の短辺方向と平行に且つ平板6に垂直な状態で平板6の内部に埋設され、平板6と一体化されている。そのため、2本のウェブ部51は、平板6を平板6に垂直な厚さ方向に拘束する。よって、平板6の短辺方向に沿った反りが防止される。 Also in the warp prevention structure of the flat plate 6 using the warp prevention member 5, the two web portions 51 of the warp prevention member 5 are inside the flat plate 6 in a state parallel to the short side direction of the flat plate 6 and perpendicular to the flat plate 6. And is integrated with the flat plate 6. Therefore, the two web portions 51 restrain the flat plate 6 in the thickness direction perpendicular to the flat plate 6. Therefore, the warp of the flat plate 6 along the short side direction is prevented.

また、ウェブ部51と平板6とが木材用接着剤63によって接着されているので、ネジやビスなどの固定具で接着させる場合に比べて反り防止部材5と平板6との接着力の持続性を高め、湿度や温度の変化などの経年変化による反り、さらには垂直荷重による反りに対する反り防止効果の減衰を抑えることができる。さらに、第1実施形態、および第2実施形態の場合と同様に、反り防止部材5が炭素繊維強化プラスチックで構成されているので、反り防止部材5が金属製である場合に比べて、反り防止部材5の自重による反り防止部材5と平板6との接着力の低下を抑え、高い反り防止効果を図ることができる。また、反り防止部材5の断面には、ウェブ部51の他に、ウェブ51に直交する2本のフランジ部52も含まれているので、反り防止部材5の平板6に対する定着性が高まると共に、曲げ剛性を高めることができる。 Further, since the web portion 51 and the flat plate 6 are adhered by the wood adhesive 63, the durability of the adhesive force between the warp prevention member 5 and the flat plate 6 is longer than in the case where the web part 51 and the flat plate 6 are adhered by a fixture such as a screw or a screw. It is possible to suppress the warp due to aging such as changes in humidity and temperature, and to suppress the warp prevention effect against the warp due to vertical load. Further, as in the case of the first embodiment and the second embodiment, since the warp prevention member 5 is made of carbon fiber reinforced plastic, the warp prevention member 5 is prevented from warping as compared with the case where the warp prevention member 5 is made of metal. It is possible to suppress a decrease in the adhesive force between the warp prevention member 5 and the flat plate 6 due to the weight of the member 5 and to achieve a high warp prevention effect. Further, the cross section of the warp prevention member 5 includes, in addition to the web portion 51, two flange portions 52 orthogonal to the web 51, so that the fixing property of the warp prevention member 5 on the flat plate 6 is enhanced, and Flexural rigidity can be increased.

なお、第3実施形態に係る反り防止部材5を用いた平板6の反り防止方法については、第1実施形態、および第2実施形態の場合と同様に、実施することができる。 The warp prevention method for the flat plate 6 using the warp prevention member 5 according to the third embodiment can be carried out in the same manner as in the first and second embodiments.

(その他の実施形態)
本発明に係る反り防止構造が適用される対象製品、すなわち、本発明に係る反り防止部材が反り防止に用いられる対象となる平板の用途は第1実施形態乃至第3実施形態に限られず適宜に設定しても良い。反り防止部材1,3,5が用いられる製品は、机やテーブルの天板やドア本体の他に、棚の天板、棚板、底板、および側板のように経年変化によって反りが発生する板状の部材に適用してもよい。
(Other embodiments)
The target product to which the warp prevention structure according to the present invention is applied, that is, the application of the flat plate to which the warp prevention member according to the present invention is used for warpage prevention is not limited to the first to third embodiments, and may be appropriately used. You may set it. Products using the warp prevention members 1, 3 and 5 include a top plate of a desk or a table, a main body of a door, a plate such as a shelf top plate, a shelf plate, a bottom plate, and a side plate, which warps due to aging. It may be applied to a member having a shape of a circle.

また、図2乃至図8では説明の便宜上、平板2,4,6の反り防止部材1,3,5を挿入させる側の表面を上側にしているが、使用時における表面の向きは適宜に設定しても良い。 Further, in FIGS. 2 to 8, for convenience of description, the surfaces of the flat plates 2, 4, 6 into which the warp preventing members 1, 3, 5 are inserted are set to the upper side, but the orientation of the surfaces during use is set appropriately. You may do it.

さらに、平板2,4,6のように複数枚の板状部材21,41,61で構成されずに一枚の板状部材に本発明に係る反り防止部材を用いて、本発明に係る反り構造を構築してもよい。また、ドア本体は、全体的に平板状であるが、例えば図9に示すように、木材もしくは木質部材からなる枠状の芯材と、芯材の空隙部分に設けられるハニカムコアとで、構成される場合もある。このように全体的にみると平板状の平板についても、第1実施形態などのように、芯材部分に挿入溝を形成し、そこに反り防止部材1を挿入させることで、平板の反りを防止することができる。 Further, the warp prevention member according to the present invention is used for one plate-shaped member without being composed of a plurality of plate-shaped members 21, 41, 61 like the flat plates 2, 4, 6 The structure may be constructed. The door body is generally flat, but as shown in FIG. 9, for example, is composed of a frame-shaped core material made of wood or a wood member, and a honeycomb core provided in a void portion of the core material. It may be done. As described above, even in the case of a flat plate as a whole, the warp of the flat plate can be prevented by forming the insertion groove in the core material portion and inserting the warp prevention member 1 therein, as in the first embodiment. Can be prevented.

また、本発明の反り防止部材および反り防止構造が適用される平板状の木質部材の平面視形状や寸法も適宜に設定しても良い。また、本発明の反り防止部材および反り防止構造が適用される平板状の木質部材は、原木から製材された天然の無垢材ではなく、合板、集成材、中密度繊維板(MDF:Medium Density Fiberboard)などのファイバーボード、パーティクルボード、または配向性ストランドボード(OSB:Oriented Standard Board)のような人工的に製造された木質材料であっても良い。 Further, the plan view shape and dimensions of the flat wood member to which the warp prevention member and the warp prevention structure of the present invention are applied may be appropriately set. Further, the warp prevention member and the flat wood member to which the warp prevention structure of the present invention is applied are not natural solid wood lumbered from raw wood, but plywood, laminated wood, medium density fiberboard (MDF). ), a fiber board such as ), a particle board, or an artificially manufactured wood material such as Oriented Standard Board (OSB).

また、反り防止部材の断面形状も、反り防止部材1,3,5のようなT字状,C字状、および正方形の枠状に限られない。反り防止部材の断面形状としては、これらの他にL字状やH型、さらには円形の枠状などであっても良い。または、ウェブ部が平板に対して斜め方向に挿入されるようにしても良い。反り防止部材の断面に、木材からなる平板に対して交差する方向の部分が含まれていれば良い。よって、例えば、反り防止部材の断面形状は、断面が細長い矩形状であっても良い。または、反り防止部材の断面形状が三角形の枠状であっても良い。なお、反り防止部材の断面形状が変更された場合、本発明の反り防止構造に係る平板については、その断面形状に応じて、少なくともウェブ部を挿入できる挿入溝を設け、ウェブ部と挿入溝の側面とが接着剤によって接着されるようにする。 Further, the cross-sectional shape of the warp prevention member is not limited to the T-shape, the C-shape, and the square frame shape like the warp prevention members 1, 3, and 5. The cross-sectional shape of the warp prevention member may be L-shaped, H-shaped, circular frame-shaped, or the like in addition to these. Alternatively, the web portion may be inserted obliquely to the flat plate. It is sufficient that the cross section of the warp prevention member includes a portion in a direction intersecting with the flat plate made of wood. Therefore, for example, the cross-sectional shape of the warp prevention member may be an elongated rectangular shape in cross section. Alternatively, the warp prevention member may have a triangular frame shape in cross section. When the cross-sectional shape of the warp prevention member is changed, the flat plate according to the warp prevention structure of the present invention is provided with an insertion groove into which at least the web portion can be inserted according to the cross-sectional shape, and the web portion and the insertion groove The side surface and the side surface are adhered by an adhesive.

さらに、反り防止部材や挿入溝などの反り防止構造に係る寸法も第1実施形態ないし第3実施形態に限られず適宜に変更しても良い。例えば、ウェブ部11,31の厚さがフランジ部12,32の厚さよりも厚いなどのようにウェブ部11,31の厚さとフランジ部12,32の厚さとが異なるようにしても良い。また、ウェブ部11,31の幅とフランジ部12,32の高さとが同一になるようにしても良い。 Furthermore, the dimensions related to the warp prevention structure such as the warp prevention member and the insertion groove are not limited to those in the first to third embodiments, and may be changed appropriately. For example, the thickness of the web portions 11, 31 may be different from the thickness of the flange portions 12, 32 such that the thickness of the web portions 11, 31 is thicker than the thickness of the flange portions 12, 32. Further, the width of the web portions 11 and 31 and the height of the flange portions 12 and 32 may be the same.

また、1枚の平板に設けられる複数の反り防止部材は、複数種類の反り防止部材で構成されるようにしても良い。例えば、1枚の平板に設けられている複数の反り防止部材は全て同一断面形状の反り防止部材であるが、これらはウェブ部の幅が異なる複数種類の反り防止部材で構成されるようにしても良い。また、1枚の平板に設けられている複数の反り防止部材は、断面形状の異なる複数種類の反り防止部材で構成されるようにしても良い。 Further, the plurality of warp prevention members provided on one flat plate may be composed of a plurality of types of warp prevention members. For example, a plurality of warp prevention members provided on one flat plate are all warp prevention members having the same cross-sectional shape, but these are configured by a plurality of kinds of warp prevention members having different widths of web portions. Is also good. Further, the plurality of warp prevention members provided on one flat plate may be composed of a plurality of types of warp prevention members having different cross-sectional shapes.

また、本発明の反り防止部材を構成する材料も炭素繊維強化プラスチックに限られず、ガラス繊維強化プラスチックやアラミド繊維強化プラスチックなど、他の強化材を用いた繊維強化プラスチックであっても良い。さらには、反り防止部材を金属で構成させても良い。また、反り防止部材は、1種類の単一の材料で構成されるのではなく、複数種類の材料によって複合化されても良い。 Further, the material forming the warp prevention member of the present invention is not limited to carbon fiber reinforced plastic, and may be fiber reinforced plastic using other reinforcing materials such as glass fiber reinforced plastic and aramid fiber reinforced plastic. Further, the warp prevention member may be made of metal. Further, the warp prevention member may not be composed of one kind of single material, but may be compounded with plural kinds of materials.

加えて、本発明の反り防止部材を構成する強化繊維の繊維方向も反り防止部材1,3,5の構成に限られずに適宜に設定しても良い。例えば、反り防止部材の材軸方向を0度として、ウェブ部が0度と90度の2方向の繊維方向の強化繊維で構成され、フランジ部が0度の1方向の繊維方向の強化繊維で構成されるようにしても良い。また、反り防止部材の材軸方向を0度として、ウェブ部およびフランジ部の何れもあるいは何れか一方については、0度と±45度の3方向の繊維方向の強化繊維で構成されるようにしても良い。また、ウェブ部やフランジ部を強化繊維の繊維方向が異なる強化繊維プラスチックで積層化させても良い。 In addition, the fiber direction of the reinforcing fibers constituting the warp prevention member of the present invention is not limited to the constitution of the warp prevention members 1, 3, 5 and may be set appropriately. For example, when the material axis direction of the warp prevention member is 0 degree, the web portion is composed of reinforced fibers in two fiber directions of 0 degree and 90 degrees, and the flange portion is reinforced fiber in one direction of 0 degree. It may be configured. Further, with the warp prevention member having a material axis direction of 0 degree, either or both of the web portion and the flange portion are constituted by reinforcing fibers in three fiber directions of 0 degree and ±45 degrees. May be. Further, the web portion and the flange portion may be laminated with a reinforced fiber plastic in which the fiber directions of the reinforced fibers are different.

さらに、本発明の反り防止部材を構成する強化繊維は、平織や綾織で構成されても良い。また、本発明の反り防止部材を構成する強化繊維は、単一の種類ではなく、例えば、炭素繊維とガラス繊維の2種類など複数種類の強化線で構成されるようにしても良い。 Further, the reinforcing fiber forming the warp prevention member of the present invention may be formed of plain weave or twill weave. Further, the reinforcing fiber forming the warp preventing member of the present invention may be composed of a plurality of kinds of reinforcing wires such as two kinds of carbon fiber and glass fiber instead of a single kind.

また、反り防止部材1,3,5の所定の表面部分、具体的には平板2,4,6と接着される表面については粗化処理が施され、表面粗化されているが、粗化処理が施されていなくても良い。 Further, the predetermined surface portions of the warp prevention members 1, 3, 5 are subjected to a roughening treatment, specifically, the surfaces to be bonded to the flat plates 2, 4, 6 to roughen the surface. It does not need to be treated.

加えて、本発明の反り防止構造が適用される平板の平面視形状が矩形状である場合、反り防止構造によって防止される反りの方向も、平板の短辺方向に限られず、平板の長辺方向であっても良い。また、反り防止構造において、反り防止部材が平板の両端まで挿入されるようにしても良い。さらに、反り防止構造において、形状や寸法が異なる複数種類の反り防止部材を1枚の平板に用いても良い。 In addition, when the flat surface shape of the flat plate to which the warp prevention structure of the present invention is applied is rectangular, the direction of the warp prevented by the warp prevention structure is not limited to the short side direction of the flat plate, but the long side of the flat plate. It may be the direction. Further, in the warp prevention structure, the warp prevention member may be inserted up to both ends of the flat plate. Further, in the warp prevention structure, plural kinds of warp prevention members having different shapes and dimensions may be used for one flat plate.

また、本発明の反り防止部材を用いた反り防止方法についても、第1実施形態に限られない。例えば、第1実施形態の反り防止方法における挿入溝形成工程について、工程1と工程2の順序を入れ替えても良い。また、第1実施形態の反り防止方法における接着工程について、反り防止部材1のウェブ部11の全表面とフランジ部12のウェブ部11が形成されている側の表面および両側面に、木材用接着剤23を塗布し、木材用接着剤23が接着された反り防止部材1を挿入溝22に挿入させるようにしても良い。 Further, the warp prevention method using the warp prevention member of the present invention is not limited to the first embodiment. For example, in the insertion groove forming step in the warp prevention method of the first embodiment, the order of step 1 and step 2 may be exchanged. In addition, regarding the bonding step in the warp prevention method of the first embodiment, the entire surface of the web portion 11 of the warp prevention member 1 and the surface of the flange portion 12 on the side where the web portion 11 is formed and both side surfaces are adhered for wood. The warp prevention member 1 to which the adhesive 23 for wood is adhered may be inserted into the insertion groove 22 by applying the agent 23.

さらに、第1実施形態および第2実施形態の反り防止構造において、フランジ部溝222,422が形成されているが、これが形成されていないようにすることもできる。この場合、平板2,4の一方の表面からウェブ部溝221,421のみを形成させ、ウェブ部11,31をウェブ部溝221,421に挿入し、木材用接着剤23,43で接着させる。そして、フランジ部12,32のウェブ部11が形成されている側の表面も、平板2,4の表面と木材用接着剤23,43で接着させるようにしても良い。 Furthermore, in the warp prevention structures of the first and second embodiments, the flange grooves 222 and 422 are formed, but it is also possible not to form these. In this case, only the web part grooves 221 and 421 are formed from one surface of the flat plates 2 and 4, the web parts 11 and 31 are inserted into the web part grooves 221, 421, and the wood adhesives 23 and 43 are used for adhesion. The surfaces of the flange portions 12 and 32 on the side where the web portion 11 is formed may be adhered to the surfaces of the flat plates 2 and 4 with the wood adhesives 23 and 43.

また、第1実施形態ないし第3実施形態では、挿入溝22,42,62は平板2,4,6の一方の平面から形成され、反り防止部材1,3,5が平板2,4,6の一方の平面から挿入されているが、挿入溝22,42,62は平板2,4,6の両平面の間で何れの平面にも貫通されず形成され、反り防止部材1,3,5が平板2,4,6の両平面の間に挿入するようにしても良い。 In addition, in the first to third embodiments, the insertion grooves 22, 42, 62 are formed from one flat surface of the flat plates 2, 4, 6 and the warp prevention members 1, 3, 5 are flat plates 2, 4, 6 respectively. Although it is inserted from one of the flat surfaces, the insertion grooves 22, 42, and 62 are formed between the flat surfaces of the flat plates 2, 4, and 6 without penetrating any flat surface, and the warp prevention members 1, 3, 5 are formed. May be inserted between both flat surfaces of the flat plates 2, 4, and 6.

1,3,5…反り防止部材
2,4,6…平板
11,31,51…ウェブ部
12,32,52…フランジ部
22,42,62…挿入溝
221,421…ウェブ部溝
222,442…フランジ部溝
23,43,63…木材用接着剤
1, 3, 5... Warp prevention members 2, 4, 6... Flat plates 11, 31, 51... Web portions 12, 32, 52... Flange portions 22, 42, 62... Insertion grooves 221, 421... Web portion grooves 222, 442 ...Flange groove 23,43,63...Adhesive for wood

Claims (2)

木材または木質材料からなる平板の反りを防止する反り防止構造であって、
一方向に延びて形成された反り防止部材が、前記平板に反りが生じ得る所望の方向に沿って前記平板に配置され、
前記反り防止部材は、強化繊維プラスチックからなり、前記一方向に沿って形成された板状のフランジ部と、前記一方向に沿って前記フランジ部の一方の面から直交または斜めに立設された板状のウェブ部と、を有し、
前記平板には、前記フランジ部の他方の面が前記平板の表面と略面一となり、且つ、前記ウェブ部の先端側から前記反り防止部材の断面形状に沿って前記平板に挿入できるような挿入溝が形成され、
前記挿入溝に挿入された前記反り防止部材が、前記挿入溝に挿入されている表面全体で前記平板と接着剤によって接着されていることを特徴とする反り防止構造。
A warp prevention structure for preventing warpage of a flat plate made of wood or wood material,
A warp prevention member extending in one direction is arranged on the flat plate along a desired direction in which the flat plate may be warped ,
The warp prevention member is made of a reinforced fiber plastic, and is erected orthogonally or obliquely from one surface of the flange portion and a plate-like flange portion formed along the one direction and along the one direction. And a plate-shaped web portion,
Insertion into the flat plate such that the other surface of the flange portion is substantially flush with the surface of the flat plate, and can be inserted into the flat plate from the tip end side of the web portion along the cross-sectional shape of the warp prevention member. A groove is formed,
The warpage prevention structure characterized in that the warpage prevention member inserted into the insertion groove is adhered to the flat plate with an adhesive over the entire surface inserted into the insertion groove .
木材または木質材料からなる平板の反りを防止する反り防止方法であって、
強化繊維プラスチックで構成され、一方向に延びて形成された反り防止部材は、前記一方向に沿って形成された板状のフランジ部と、前記一方向に沿って前記フランジ部の一方の面から直交または斜めに立設された板状のウェブ部と、を有し、
前記平板には、前記フランジ部の他方の面が前記平板の表面と略面一となり、且つ、前記ウェブ部の先端側から前記反り防止部材の断面形状に沿って前記平板に挿入できるような挿入溝が形成され、
前記挿入溝に接着剤を充填させる接着剤充填工程と、
前記接着剤が充填されている前記挿入溝に前記反り防止部材を挿入する挿入工程と、を有することを特徴とする反り防止方法。
A method for preventing warpage of a flat plate made of wood or a wood material,
A warp prevention member made of reinforced fiber plastic and formed to extend in one direction is a plate-shaped flange portion formed along the one direction, and from one surface of the flange portion along the one direction. And a plate-shaped web portion that is erected orthogonally or diagonally,
Insertion into the flat plate such that the other surface of the flange portion is substantially flush with the surface of the flat plate, and can be inserted into the flat plate from the tip end side of the web portion along the cross-sectional shape of the warp prevention member. A groove is formed,
An adhesive filling step of filling the insertion groove with an adhesive,
An insertion step of inserting the warp prevention member into the insertion groove filled with the adhesive , the warp prevention method comprising:
JP2018024072A 2018-02-14 2018-02-14 Warp prevention structure for preventing warpage of a flat plate made of wood or a wooden member, and warp prevention method Expired - Fee Related JP6733864B2 (en)

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