JP5002428B2 - Fastener - Google Patents

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JP5002428B2
JP5002428B2 JP2007300700A JP2007300700A JP5002428B2 JP 5002428 B2 JP5002428 B2 JP 5002428B2 JP 2007300700 A JP2007300700 A JP 2007300700A JP 2007300700 A JP2007300700 A JP 2007300700A JP 5002428 B2 JP5002428 B2 JP 5002428B2
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shaft
embedded
coupling member
fastening bolt
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JP2009127211A (en
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義邦 大倉
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義邦 大倉
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Description

本発明は、木造建築物において柱と梁などの直交する二部材を一体化する締結具に関する。   The present invention relates to a fastener for integrating two orthogonal members such as a column and a beam in a wooden building.

木造軸組工法は、矩形断面の部材を組み合わせて骨格を形成しているが、これらの部材を一体化している締結部は、建物の強度を維持する上で極めて重要であり、古くからホゾの組み合わせなどの締結方法が使用されており、また近年は耐震性の向上や作業性の改善などのため、各種の金具を使用する場合も多い。   The wooden frame construction method forms a skeleton by combining rectangular cross-section members, but the fastening part that integrates these members is extremely important for maintaining the strength of the building. Fastening methods such as combinations are used, and in recent years, various metal fittings are often used to improve earthquake resistance and workability.

柱と梁などの直交する二部材を締結する方法のうち、剛性が確保しやすくコストも抑制できる構造の一例を図８に示す。この図の締結部は、柱の側面に梁の端面を密着させたＴ字状であり、柱には側面を貫通する軸孔が加工され、この中にボルトが差し込まれている。また梁の端面には軸孔と同心となる位置に横穴が加工されている。さらに梁の側面には、横穴と交差するピン孔が加工されており、この中に円柱状の固定ピンを打ち込む。固定ピンの中央にはネジ孔が形成されており、このネジ孔を横穴と同心に揃えた後、ボルトを軸孔から横穴に向けて差し込み、固定ピンのネジ孔に螺合させて締め上げると、梁の端面が柱の側面に密着して双方が一体化する。なお軸孔の一端には、ボルト頭部を収容するための座グリ穴が形成されており、しかもボルト頭部が柱の中に陥没することを防止するため、ワッシャを組み込んでいる。この図以外にも、部材を締結する方法は多数存在しており、本発明と同様にラグスクリューボルトを使用する例として以下の特許文献が挙げられる。
特開２００５−２３２７１１号公報 Of the methods for fastening two orthogonal members such as a column and a beam, an example of a structure capable of ensuring rigidity and suppressing cost is shown in FIG. The fastening portion in this figure has a T shape in which the end face of the beam is brought into close contact with the side surface of the column. A shaft hole penetrating the side surface is processed in the column, and a bolt is inserted therein. In addition, a lateral hole is machined at a position concentric with the shaft hole on the end face of the beam. Further, a pin hole intersecting the lateral hole is machined on the side surface of the beam, and a cylindrical fixing pin is driven therein. A screw hole is formed in the center of the fixing pin. After aligning the screw hole concentrically with the horizontal hole, insert the bolt from the shaft hole toward the horizontal hole, screw it into the screw hole of the fixing pin, and tighten it. The end face of the beam is in close contact with the side face of the column, and both are integrated. A counterbore hole for accommodating the bolt head is formed at one end of the shaft hole, and a washer is incorporated to prevent the bolt head from sinking into the pillar. In addition to this figure, there are many methods for fastening the members, and the following patent documents can be cited as examples of using lag screw bolts as in the present invention.
JP-A-2005-232711

図８に示されるボルトは、固定ピンを強力に引き寄せているため、ボルトの頭部と柱との接触面には高い圧力が作用する。そのため経年によって座グリ穴の底面が陥没していき、最悪の場合にはボルトが緩んで締結部の剛性が低下する恐れがある。その対策として、ボルトの頭部と柱との間にワッシャを介在させて圧力を緩和しているが、ワッシャの直径にも限度があり、他の対策を講じることが好ましい。   Since the bolt shown in FIG. 8 strongly attracts the fixing pin, a high pressure acts on the contact surface between the head of the bolt and the column. For this reason, the bottom face of the counterbore hole is depressed over time, and in the worst case, the bolt may be loosened and the rigidity of the fastening portion may be reduced. As a countermeasure, the pressure is relieved by interposing a washer between the head of the bolt and the pillar, but the diameter of the washer is limited, and it is preferable to take other countermeasures.

本発明はこうした実情を基に開発されたもので、直交する二本の部材を一体化する際、部材の経年変形による強度低下を防止できる締結具の提供を目的としている。   The present invention has been developed on the basis of such circumstances, and an object of the present invention is to provide a fastener capable of preventing a decrease in strength due to aging deformation of members when two orthogonal members are integrated.

前記の課題を解決するための請求項１記載の発明は、主幹部材の側面に結合部材の端面を結合する締結具であって、主幹部材の側面を貫通する軸孔に配置され且つ軸孔方向に中孔を有する埋設軸と、前記結合部材の側面に形成された側面孔に差し込まれ且つ雌ネジを有する留置具と、前記留置具を前記埋設軸に引き寄せる締結ボルトと、を備え、前記埋設軸の側周面には、主幹部材に食い込む螺旋状の凸条が形成されており、前記締結ボルトは、前記中孔から差し込まれ、前記結合部材の端面から延びる端面穴を経て前記雌ネジに螺合しており、前記側面孔は矩形断面で、前記留置具は、該側面孔に応じた矩形断面の棒部材であることを特徴とする締結具である。 The invention according to claim 1 for solving the above-mentioned problem is a fastener for coupling an end surface of a coupling member to a side surface of a main trunk member, and is disposed in an axial hole penetrating the side surface of the main trunk member and has an axial hole direction. comprising a buried shaft having a bore, and a retaining device having a coupling and a female screw inserted in the side hole formed in the side surface of the member, and a fastening bolt to draw the retaining device on the buried shaft, said buried Spiral ridges that bite into the main member are formed on the side peripheral surface of the shaft, and the fastening bolt is inserted into the inner hole and passes through the end surface hole extending from the end surface of the coupling member to the female screw. The fastener is characterized in that it is screwed, the side hole has a rectangular cross section, and the indwelling tool is a bar member having a rectangular cross section corresponding to the side hole .

本発明は、木造建築物の骨格を構成する柱や梁などの二部材を締結する箇所に使用され、以下、二部材のうち、構造上で基礎に近い側を主幹部材と称し、この主幹部材によって支持される部材を結合部材と称し、主幹部材の側面に結合部材の端面を接触させることで、Ｔ字状あるいはＬ字状の締結部が構成されることを前提とする。したがって通常の形態では、柱が主幹部材に相当して、柱によって支持される梁などの横架材が結合部材に相当する。なお主幹部材と結合部材のいずれも、集成材を含む木質系であることを前提とする。   The present invention is used in a place where two members such as pillars and beams constituting a skeleton of a wooden building are fastened. Hereinafter, of the two members, a side close to the foundation in structure is referred to as a main member, and this main member The member supported by the above is called a coupling member, and it is assumed that a T-shaped or L-shaped fastening portion is configured by bringing the end surface of the coupling member into contact with the side surface of the main trunk member. Therefore, in a normal form, the column corresponds to the main member, and the horizontal member such as a beam supported by the column corresponds to the coupling member. It is assumed that both the main trunk member and the coupling member are made of wood including laminated wood.

本発明は、主幹部材に埋め込まれる埋設軸と、結合部材に埋め込まれる留置具と、留置具を主幹部材に引き寄せる締結ボルトの計三物品で構成される。そのうち埋設軸は、主幹部材の両側面を貫通する軸孔に挿入されるもので、軸孔の全長よりもやや短い円筒状で、その側周面には、半径方向に鋭く突出する凸条が螺旋状に形成されており、一般にコーチボルトやラグスクリューと呼ばれている物と似た外形となっており、また内部には、締結ボルトを挿通するための中孔が形成されている。凸条が主幹部材の中に食い込むことで、埋設軸は主幹部材と強固に一体化され、しかも埋設軸に作用する荷重を円滑に主幹部材に伝達できる。中孔については、締結ボルトのネジ部だけが挿通できる直径として、締結ボルトの軸方向の移動を規制する。なお埋設軸を埋め込むための軸孔は、製材段階で所定の位置に加工するものだが、その直径は、凸条を除く埋設軸と同等として、凸条だけが部材の中に食い込むものとする。   The present invention is composed of a total of three articles: an embedded shaft embedded in the main member, an indwelling device embedded in the coupling member, and a fastening bolt that draws the indwelling device toward the main member. Of these, the buried shaft is inserted into a shaft hole penetrating both side surfaces of the main trunk member, and has a cylindrical shape that is slightly shorter than the entire length of the shaft hole. It is formed in a spiral shape and has an external shape similar to what is commonly called a coach bolt or a lag screw, and an internal hole for inserting a fastening bolt is formed inside. Since the ridges bite into the main member, the embedded shaft is firmly integrated with the main member, and the load acting on the embedded shaft can be smoothly transmitted to the main member. About a medium hole, the movement of the axial direction of a fastening bolt is controlled as a diameter which only a screw part of a fastening bolt can penetrate. The shaft hole for embedding the embedded shaft is processed at a predetermined position in the lumbering stage, but its diameter is the same as that of the embedded shaft excluding the convex strip, and only the convex stripes bite into the member.

留置具は、結合部材に埋め込まれて主幹部材との結合を担うものである。したがって留置具は、摩擦などで結合部材と一体化され、結合部材に作用する荷重を確実に主幹部材に伝達できる必要がある。また主幹部材と留置具は、締結ボルトによって結合されるため、留置具には、締結ボルトを螺合するための雌ネジを設けておく必要がある。   The indwelling device is embedded in the coupling member and bears the coupling with the main trunk member. Therefore, the indwelling device needs to be integrated with the coupling member by friction or the like so that the load acting on the coupling member can be reliably transmitted to the main member. Since the main member and the indwelling device are coupled by the fastening bolt, the indwelling device needs to be provided with a female screw for screwing the fastening bolt.

締結ボルトは、軸孔に挿入された埋設軸から留置具の雌ネジに向けて差し込まれるもので、留置具を主幹部材に引き寄せる機能がある。締結ボルトの頭部は、埋設軸の端面などで軸方向への移動が規制されるため、締結ボルトの先端を雌ネジに螺合させて締め上げていくと、留置具が主幹部材の側面に引き寄せられて、主幹部材の側面に結合部材が密着する。   The fastening bolt is inserted from the embedded shaft inserted into the shaft hole toward the female screw of the indwelling device, and has a function of drawing the indwelling device toward the main member. Since the head of the fastening bolt is restricted from moving in the axial direction by the end face of the buried shaft, etc., when the tip of the fastening bolt is screwed into the female screw and tightened, the detainer is attached to the side surface of the main member. The connecting member is brought into close contact with the side surface of the main trunk member by being drawn.

このように構成することで、締結ボルトに作用する荷重は、埋設軸の凸条を介して主幹部材の広い範囲に伝達していくほか、ボルトの頭部が主幹部材と直接的に接触しないため、過大な圧力による主幹部材の変形を防止できる。なお本発明による締結具は、強度を確保するため一箇所の締結部に複数組を使用する必要があり、部材の大きさに応じて縦方向や横方向に並べて配置する。   By configuring in this way, the load acting on the fastening bolt is transmitted to a wide range of the main member via the ridges of the embedded shaft, and the bolt head does not directly contact the main member. The deformation of the main trunk member due to excessive pressure can be prevented. The fastener according to the present invention needs to use a plurality of sets for one fastening portion in order to ensure strength, and is arranged side by side in the vertical direction or the horizontal direction depending on the size of the member.

留置具は、矩形断面の棒部材であり、結合部材の側面に形成された側面孔に差し込まれる。側面孔は、留置具に応じた矩形断面とする。また締結ボルトを差し込むため、結合部材の端面からは、主幹部材の軸孔と同心となる端面穴を形成してある。この端面穴は、側面孔と十字状に交差する。The indwelling device is a bar member having a rectangular cross section, and is inserted into a side hole formed on the side surface of the coupling member. The side hole has a rectangular cross section corresponding to the indwelling tool. Moreover, in order to insert a fastening bolt, the end surface hole which becomes concentric with the axial hole of the main member is formed from the end surface of the coupling member. This end surface hole intersects the side surface hole in a cross shape.

このように留置具を矩形断面とすることで、結合部材と留置具との接触面は、単純な平面になり、締結ボルトで留置具を引き寄せた際、この接触面全体で荷重を受け止める。そのため結合部材の局地に過大な荷重が作用することがなく、ヒビ割れなどを防止できるほか、雌ネジと端面穴を同心に揃える作業も容易である。By making the indwelling device have a rectangular cross section in this way, the contact surface between the coupling member and the indwelling device becomes a simple flat surface, and when the indwelling device is pulled with a fastening bolt, the entire contact surface receives the load. Therefore, an excessive load does not act on the local area of the coupling member, and cracks and the like can be prevented, and the work of aligning the female screw and the end face hole is also easy.

請求項１記載の発明のように、主幹部材の側面を貫通する軸孔に埋設軸を埋め込んだ上、この中に締結ボルトを差し込むことで、締結ボルトに作用する荷重は、埋設軸によって受け止められる。そのため主幹部材の一部に過大な圧力が作用することはなく、また埋設軸に伝達された荷重は、螺旋状の凸条を介して広範囲に分散していくため、経年による主幹部材の変形を防止でき、締結部の剛性を長期間維持する。   As in the first aspect of the invention, the embedded shaft is embedded in the shaft hole penetrating the side surface of the main trunk member, and the fastening bolt is inserted therein, whereby the load acting on the fastening bolt is received by the embedded shaft. . Therefore, excessive pressure does not act on a part of the main member, and the load transmitted to the embedded shaft is dispersed over a wide range via the spiral ridges. The rigidity of the fastening portion can be maintained for a long time.

さらに留置具として、結合部材の側面孔に埋め込まれる棒部材を使用することで、留置具の側面を介して荷重が結合部材に伝達するため、結合部材の一部に過大な荷重が作用することがなく、部材の健全性が維持できる。 Furthermore , since a load is transmitted to the coupling member through the side surface of the detainer by using a bar member embedded in the side hole of the coupling member as an indwelling device, an excessive load acts on a part of the coupling member. And the soundness of the member can be maintained.

図１は、締結具の構成例を示している。垂直に延びている主幹部材３１の側面に結合部材３２の端面を接触させて、Ｔ字を横倒しにした締結部を形成している。なお主幹部材３１および結合部材３２は、いずれも矩形断面の木材を使用している。主幹部材３１には、埋設軸１１を埋め込むため、両側面を貫通する二個の軸孔３３が上下に並んで形成されている。埋設軸１１は、鋼製の丸棒を素材としており、側周面には半径方向に突出する凸条１２が螺旋状に形成され、ラグスクリューのような外観になっており、その中心を中孔１４が貫通しており、この中孔１４の一端部には、内径が拡大された凹部１３が形成されているほか、他端部には、工具を掛けるため六角部１５が形成されている。凸条１２が主幹部材３１の中に食い込むことで、双方に強力な摩擦が発生するため、埋設軸１１は主幹部材３１の中で不動状態になるほか、凸条１２によって主幹部材３１の変形が抑止され、ヒビ割れなどを防止する。なお主幹部材３１を貫く軸孔３３の直径は、埋設軸１１の直径（凸条１２を除く）と同一であり、凸条１２だけが部材中に突き刺さることになる。 FIG. 1 shows a configuration example of a fastener. A fastening portion is formed in which the end surface of the coupling member 32 is brought into contact with the side surface of the main trunk member 31 that extends vertically, and the T-shape is laid sideways. The main trunk member 31 and the coupling member 32 both use wood having a rectangular cross section. In the main trunk member 31, two shaft holes 33 penetrating both side surfaces are formed side by side in order to embed the embedded shaft 11. The buried shaft 11 is made of a steel round bar. On the side circumferential surface, a protruding ridge 12 projecting in the radial direction is formed in a spiral shape, and looks like a lag screw, with the center in the middle. A hole 14 passes therethrough, and a concave portion 13 having an enlarged inner diameter is formed at one end portion of the middle hole 14, and a hexagonal portion 15 is formed at the other end portion for hooking a tool. . Since the ridges 12 bite into the main member 31, strong friction is generated on both sides, so that the embedded shaft 11 becomes immobile in the main member 31, and the main members 31 are deformed by the ridges 12. Deterred and prevents cracks. The diameter of the shaft hole 33 penetrating the main trunk member 31 is the same as the diameter of the embedded shaft 11 (excluding the ridges 12), and only the ridges 12 are pierced into the member.

結合部材３２の端面には、軸孔３３と同心となる位置に横穴３４が上下に並んで形成されており、この中にラグスクリュー形の留置具２２が埋め込まれる。本図で使用される留置具２２は、埋設軸１１と類似しており、側周面には凸条２３が螺旋状に形成されているが、中孔１４と凹部１３はなく、一端面側に六角部２４と雌ネジ２５が形成されている。これを横穴３４に埋め込む際は、まず雌ネジ２５のない方を結合部材３２の端面に接触させた後、六角部２４に工具を掛けて回転を与えると、凸条２３が部材に食い込むため推進力が発生して、全体が横穴３４の中に収容される。当然ながら軸孔３３や横穴３４は、設計図に基づき製材段階で所定の位置に加工している。   On the end face of the coupling member 32, a horizontal hole 34 is formed side by side at a position concentric with the shaft hole 33, and a lag screw-type indwelling device 22 is embedded therein. The indwelling tool 22 used in this figure is similar to the embedded shaft 11, and the ridges 23 are formed in a spiral shape on the side peripheral surface, but there is no inner hole 14 and the recessed portion 13, and one end surface side. A hexagonal portion 24 and a female screw 25 are formed. When this is embedded in the horizontal hole 34, first, the end without the female screw 25 is brought into contact with the end face of the coupling member 32, and then the tool is applied to the hexagonal portion 24 to rotate it. A force is generated and the whole is accommodated in the side hole 34. Of course, the shaft hole 33 and the lateral hole 34 are processed at predetermined positions in the lumbering stage based on the design drawing.

主幹部材３１に埋め込まれた埋設軸１１の中孔１４に締結ボルト２１を差し込み、これを留置具２２の雌ネジ２５に螺合させると、留置具２２を埋設軸１１に引き寄せることができる。この際、締結ボルト２１の頭部が主幹部材３１から突出していると、他の部材などと干渉の恐れがあるため、凹部１３に収容される構造になっている。そのため締結ボルト２１は、頭部に六角穴の付いた物を使用している。   When the fastening bolt 21 is inserted into the inner hole 14 of the embedded shaft 11 embedded in the main trunk member 31 and screwed into the female screw 25 of the indwelling device 22, the indwelling device 22 can be pulled toward the embedded shaft 11. At this time, if the head of the fastening bolt 21 protrudes from the main trunk member 31, there is a risk of interference with other members, and therefore, the structure is accommodated in the recess 13. Therefore, the fastening bolt 21 has a hexagonal hole on the head.

図２は、図１の締結具を用いて二部材を結合する過程を示しており、図２（Ａ）は初期段階で、図２（Ｂ）は最終段階である。図２（Ａ）のように、主幹部材３１に形成された上下二個の軸孔３３には、それぞれ埋設軸１１が埋め込まれており、その凸条１２が主幹部材３１の中に食い込んでおり、埋設軸１１は不動状態で固定されている。対する結合部材３２に形成された上下二個の横穴３４には、それぞれ留置具２２が埋め込まれており、その凸条２３が結合部材３２の中に食い込んでおり、留置具２２も不動状態で固定されている。   FIG. 2 shows a process of joining two members using the fastener of FIG. 1, wherein FIG. 2 (A) is the initial stage and FIG. 2 (B) is the final stage. As shown in FIG. 2 (A), the embedded shaft 11 is embedded in each of the upper and lower shaft holes 33 formed in the main member 31, and the ridges 12 bite into the main member 31. The embedded shaft 11 is fixed in an immobile state. The indwelling device 22 is embedded in each of the two upper and lower horizontal holes 34 formed in the connecting member 32, and the protruding strips 23 bite into the connecting member 32, and the indwelling device 22 is fixed in an immobile state. Has been.

主幹部材３１に埋設軸１１の取り付けが終わり、結合部材３２に留置具２２の取り付けが終わった段階で、主幹部材３１と結合部材３２を接触させた上、中孔１４と雌ネジ２５が同心に揃うよう位置調整を行い、次に図２（Ｂ）のように、主幹部材３１の側面から締結ボルト２１を差し込んでいき、その先端を雌ネジ２５に螺合させた後、締め上げを続けていくと、やがて結合部材３２は主幹部材３１に引き寄せられて双方が一体化するほか、締結ボルト２１の頭部は、凹部１３の中に収容される。   At the stage where the attachment of the embedded shaft 11 to the main trunk member 31 and the attachment of the indwelling tool 22 to the coupling member 32 are finished, the main trunk member 31 and the coupling member 32 are brought into contact with each other, and the inner hole 14 and the female screw 25 are concentric. Adjust the position so that they are aligned, and then insert the fastening bolt 21 from the side surface of the main trunk member 31 as shown in FIG. 2 (B), screw the tip of the bolt into the female screw 25, and continue tightening. As a result, the coupling member 32 is eventually attracted to the main trunk member 31 so that both are integrated, and the head of the fastening bolt 21 is accommodated in the recess 13.

なお埋設軸１１や留置具２２を部材に埋め込む際、仮に埋設軸１１や留置具２２が両部材の接触面から突出していれば、締結ボルト２１を締め上げた後も主幹部材３１と結合部材３２が密着しないため、剛性の低下が予想される。また埋設軸１１や留置具２２が接触面よりも陥没していれば、締結ボルト２１の締め上げによって接触面に過大な圧力が作用して経年変形などが予想される。そのため、埋設軸１１と留置具２２のいずれも、その一端面を主幹部材３１と結合部材３２との接触面に一致するように埋め込み作業を行う。   When the embedded shaft 11 and the detainer 22 are embedded in the member, if the embedded shaft 11 and the detainer 22 protrude from the contact surfaces of both members, the main member 31 and the coupling member 32 even after the fastening bolt 21 is tightened. Is not in close contact, and a decrease in rigidity is expected. Further, if the buried shaft 11 and the indwelling tool 22 are depressed from the contact surface, excessive pressure is applied to the contact surface by tightening the fastening bolt 21, and aged deformation or the like is expected. Therefore, each of the embedded shaft 11 and the indwelling tool 22 is embedded so that one end surface thereof coincides with the contact surface between the main trunk member 31 and the coupling member 32.

図３は、図１の締結具を用いて二部材を結合する過程を縦断面で示しており、図３（Ａ）は初期段階で、図３（Ｂ）は最終段階である。主幹部材３１に埋め込まれた埋設軸１１は、凸条１２が内部に食い込んでいるため、不動状態を維持している。また埋設軸１１の左端は、締結ボルト２１の頭部を収容できるよう、円断面の凹部１３が形成されている。対する埋設軸１１の右端には、差し込みの際に回転を与えるための六角部１５が形成され、軸孔３３との間に工具などを入れるための空間が確保されている。また六角部１５の端面は、主幹部材３１の側面と一致している。   FIG. 3 shows a process of joining two members using the fastener of FIG. 1 in a longitudinal section, with FIG. 3 (A) being an initial stage and FIG. 3 (B) being a final stage. The embedded shaft 11 embedded in the main trunk member 31 maintains the immovable state because the ridges 12 bite into the interior. Moreover, the recessed part 13 of the circular cross section is formed in the left end of the embedment axis | shaft 11 so that the head of the fastening bolt 21 can be accommodated. At the right end of the embedded shaft 11, a hexagonal portion 15 is formed to give rotation when inserted, and a space for inserting a tool or the like is secured between the shaft hole 33. Further, the end face of the hexagonal portion 15 coincides with the side face of the main trunk member 31.

結合部材３２には、横穴３４の中に留置具２２が埋め込まれており、この凸条２３が内部に食い込んでいるため、不動状態を維持している。また留置具２２の左端には、埋め込みの際に回転を与えるための六角部２４が形成され、横穴３４との間で工具などを入れるための空間が確保されている。なお六角部２４の端面は、結合部材３２の端面と一致している。さらに六角部２４の中心には雌ネジ２５が形成されているが、貫通はしていない。   In the coupling member 32, the indwelling tool 22 is embedded in the horizontal hole 34, and the protruding line 23 bites into the inside, so that the immovable state is maintained. In addition, a hexagonal portion 24 is provided at the left end of the indwelling device 22 to give rotation during embedding, and a space for inserting a tool or the like is secured between the horizontal hole 34 and the like. Note that the end face of the hexagonal portion 24 coincides with the end face of the coupling member 32. Furthermore, although the internal thread 25 is formed in the center of the hexagonal part 24, it does not penetrate.

締結ボルト２１は、頭部が凹部１３の中に収容されており、先端部分は中孔１４を経て雌ネジ２５に螺合しており、結合部材３２を主幹部材３１に引き寄せている。締結ボルト２１の取り付けが終わると、図３（Ｂ）のように結合部材３２の端面が主幹部材３１の側面に密着しているほか、埋設軸１１と留置具２２の端面同士も密着している。そのため締結ボルト２１によって発生する引張荷重は、埋設軸１１と留置具２２で対抗するため、両部材の接触面には過大な圧縮荷重が作用しない。   The fastening bolt 21 has a head housed in the recess 13, and a tip portion is screwed into the female screw 25 through the inner hole 14, and draws the coupling member 32 to the main member 31. When the attachment of the fastening bolt 21 is finished, the end surface of the coupling member 32 is in close contact with the side surface of the main member 31 as shown in FIG. 3B, and the end surfaces of the embedded shaft 11 and the detainer 22 are also in close contact with each other. . Therefore, since the tensile load generated by the fastening bolt 21 is opposed by the embedded shaft 11 and the indwelling tool 22, an excessive compressive load does not act on the contact surfaces of both members.

図４は、締結具の構成例を示している。垂直に延びている主幹部材３１の側面に結合部材３２の端面を接触させて、Ｔ字を横倒しにした締結部を形成している点や、主幹部材３１の軸孔３３に埋設軸１１を埋め込んでいる点は図１と全く同様である。ただし結合部材３２の方は大きく異なり、結合部材３２の端面には、軸孔３３と同心となる位置に端面穴３５が加工されており、この端面穴３５と十字状に交差する側面孔３６も加工されている。端面穴３５には、埋設軸１１を貫通している締結ボルト２１のネジ部が差し込まれ、また側面孔３６には、留置具２６が埋め込まれている。この留置具２６は円断面の棒部材であり、側面孔３６に埋め込まれた際の摩擦だけで固定され、その中央には側面を貫通する雌ネジ２７が形成されており、使用の際は、雌ネジ２７と端面穴３５を同心に揃える。なお本図では、埋設軸１１に凹部１３を設けておらず、また締結ボルト２１の頭部が六角形となっているが、これらの点については、設計や部品調達の都合などで自在に決めることができる。 FIG. 4 shows a configuration example of the fastener. The end of the coupling member 32 is brought into contact with the side surface of the main member 31 extending vertically to form a fastening portion in which the T-shape is laid down, or the embedded shaft 11 is embedded in the shaft hole 33 of the main member 31. This is exactly the same as in FIG. However, the connecting member 32 is greatly different, and an end face hole 35 is processed at a position concentric with the shaft hole 33 on the end face of the connecting member 32, and a side hole 36 intersecting with the end face hole 35 in a cross shape is also provided. Has been processed. A screw portion of the fastening bolt 21 penetrating the embedded shaft 11 is inserted into the end surface hole 35, and an indwelling tool 26 is embedded in the side surface hole 36. This indwelling tool 26 is a rod member having a circular cross section, and is fixed only by friction when embedded in the side hole 36, and a female screw 27 penetrating the side surface is formed at the center thereof. The female screw 27 and the end face hole 35 are aligned concentrically. In this figure, the recessed shaft 13 is not provided in the embedded shaft 11 and the head of the fastening bolt 21 is hexagonal. However, these points can be freely determined depending on the convenience of design and parts procurement. be able to.

図５は、図４の締結具を用いて二部材を結合する過程を示しており、図５（Ａ）は初期段階で、図５（Ｂ）は最終段階である。図５（Ａ）のように、主幹部材３１には二本の埋設軸１１が埋め込まれており、側周面から突出する凸条１２によって固定されている。対する結合部材３２に形成された上下二個の側面孔３６には、それぞれ円断面の留置具２６が埋め込まれており、その中央部の雌ネジ２７は、端面穴３５と同心になっている。   FIG. 5 shows a process of joining two members using the fastener shown in FIG. 4. FIG. 5 (A) is an initial stage and FIG. 5 (B) is a final stage. As shown in FIG. 5A, two embedded shafts 11 are embedded in the main member 31 and are fixed by the ridges 12 protruding from the side peripheral surface. An indwelling tool 26 having a circular cross section is embedded in each of the two upper and lower side holes 36 formed in the coupling member 32, and the female screw 27 at the center thereof is concentric with the end face hole 35.

主幹部材３１に埋設軸１１が埋め込まれて、また結合部材３２に丸棒状の留置具２６が埋め込まれた後、主幹部材３１と結合部材３２を接触させた上、中孔１４と端面穴３５が同心に揃うよう位置調整を行い、次に図５（Ｂ）のように、主幹部材３１の側面から締結ボルト２１を差し込んでいき、その先端を雌ネジ２７に螺合させた後、締め上げを続けていくと、やがて結合部材３２は主幹部材３１に引き寄せられて双方が一体化する。なお締結ボルト２１は、留置具２６に到達できるよう、図１に比べて全長が延びている。   After the embedded shaft 11 is embedded in the main trunk member 31 and the round bar-like indwelling device 26 is embedded in the coupling member 32, the main trunk member 31 and the coupling member 32 are brought into contact with each other, and the inner hole 14 and the end surface hole 35 are formed. Adjust the position so that they are concentrically aligned, and then insert the fastening bolt 21 from the side surface of the main trunk member 31 as shown in FIG. If it continues, the coupling member 32 will be drawn near to the main trunk member 31 eventually, and both will be integrated. The fastening bolt 21 has an overall length that is longer than that of FIG.

図６は、図４の締結具を用いて二部材を結合する過程を縦断面で示しており、図６（Ａ）は初期段階で、図６（Ｂ）は最終段階である。主幹部材３１に埋め込まれた埋設軸１１は、凸条１２が内部に食い込んでいるため、不動状態を維持している。また結合部材３２には、端面から長手方向に延びる端面穴３５が加工されており、これと交差するように側面孔３６が加工されており、側面孔３６の中に留置具２６が埋め込まれている。   FIG. 6 shows a process of joining two members using the fastener of FIG. 4 in a longitudinal section, FIG. 6 (A) is an initial stage, and FIG. 6 (B) is a final stage. The embedded shaft 11 embedded in the main trunk member 31 maintains the immovable state because the ridges 12 bite into the interior. Further, the end face hole 35 extending in the longitudinal direction from the end face is processed in the coupling member 32, and the side hole 36 is processed so as to intersect the end hole 35, and the indwelling tool 26 is embedded in the side hole 36. Yes.

締結ボルト２１は、埋設軸１１の中孔１４から結合部材３２の端面穴３５を経て、留置具２６の雌ネジ２７に螺合しており、留置具２６を引き寄せることで、結合部材３２を主幹部材３１に密着させている。したがって締結ボルト２１による引張荷重は、留置具２６を介して結合部材３２に伝達することになる。この際、留置具２６に作用する荷重で結合部材３２に割れが生じないよう、側面孔３６は部材の端面から所定の距離を空ける必要がある。そのほか締結ボルト２１の頭部は、埋設軸１１の端面に接触しているが、埋設軸１１の固定位置を調整しているため、これが主幹部材３１の側面から突出することはない。   The fastening bolt 21 is screwed into the female screw 27 of the detainer 26 through the end hole 35 of the coupling member 32 from the inner hole 14 of the embedded shaft 11, and pulls the detainer 26 to pull the coupling member 32 into the main body. The member 31 is closely attached. Therefore, the tensile load due to the fastening bolt 21 is transmitted to the coupling member 32 via the indwelling tool 26. At this time, the side hole 36 needs to be spaced a predetermined distance from the end face of the member so that the coupling member 32 is not cracked by a load acting on the indwelling tool 26. In addition, although the head of the fastening bolt 21 is in contact with the end surface of the embedded shaft 11, the fixing position of the embedded shaft 11 is adjusted, so that it does not protrude from the side surface of the main member 31.

図７は、図４と同様の構造だが、留置具２６については、断面が円ではなく矩形のものを使用している。このような角形の留置具２６は、結合部材３２との接触面が単純な平面になるため、締結ボルト２１によって引き寄せられた際、接触面の全体で荷重を受け止めるため、局地的に過大な荷重が作用することがなく、ヒビ割れなどを防止できるほか、雌ネジ２７を端面穴３５と同心に揃える作業も容易である。ただし留置具２６を差し込むための側面孔３６も角形になるため、加工作業はやや難しくなる。なお本図では、埋設軸１１などを上下に三組使用しているが、部材の大きさによっては、縦以外に横にも並べて配置しても良い。   7 has the same structure as that of FIG. 4, but the indwelling tool 26 has a rectangular cross section instead of a circle. Since such a square indwelling device 26 has a simple contact surface with the coupling member 32, when it is attracted by the fastening bolt 21, the load is received by the entire contact surface, so that it is locally excessive. The load is not applied, cracks can be prevented, and the work of aligning the female screw 27 concentrically with the end face hole 35 is easy. However, since the side hole 36 for inserting the indwelling tool 26 is also rectangular, the machining operation is somewhat difficult. In this figure, three sets of embedded shafts 11 and the like are used up and down, but depending on the size of the members, they may be arranged side by side in addition to the vertical.

締結具の構成例を示す斜視図であり、留置具としてラグスクリュー形のものを使用している。 It is a perspective view which shows the structural example of a fastener, and uses the thing of a lag screw type as an indwelling tool. 図１の締結具を用いて二部材を結合する過程を示す斜視図であり、（Ａ）は初期段階で、（Ｂ）は最終段階である。It is a perspective view which shows the process of couple | bonding two members using the fastener of FIG. 1, (A) is an initial stage, (B) is a final stage. 図１の締結具を用いて二部材を結合する過程を示す縦断面図であり、（Ａ）は初期段階で、（Ｂ）は最終段階である。It is a longitudinal cross-sectional view which shows the process of couple | bonding two members using the fastener of FIG. 1, (A) is an initial stage, (B) is a final stage. 締結具の構成例を示す斜視図であり、留置具として円断面の棒部材を使用している。 It is a perspective view which shows the structural example of a fastener, and uses the rod member of a circular cross section as an indwelling tool. 図４の締結具を用いて二部材を結合する過程を示す斜視図であり、（Ａ）は初期段階で、（Ｂ）は最終段階である。It is a perspective view which shows the process of couple | bonding two members using the fastener of FIG. 4, (A) is an initial stage, (B) is a final stage. 図４の締結具を用いて二部材を結合する過程を示す縦断面図であり、（Ａ）は初期段階で、（Ｂ）は最終段階である。It is a longitudinal cross-sectional view which shows the process of couple | bonding two members using the fastener of FIG. 4, (A) is an initial stage, (B) is a final stage. 図４に類似した締結具の構成例を示す斜視図であり、留置具として角形のものを使用している。It is a perspective view which shows the structural example of the fastener similar to FIG. 4, and uses the square thing as an indwelling tool. 柱と梁などの直交する二部材を締結する方法のうち、剛性が確保しやすくコストも低い従来技術の一例を示す斜視図である。It is a perspective view which shows an example of the prior art which is easy to ensure rigidity and low cost among the methods of fastening two orthogonal members, such as a column and a beam.

１１ 埋設軸
１２ 凸条
１３ 凹部
１４ 中孔
１５ 六角部
２１ 締結ボルト
２２ 留置具（ラグスクリュー形）
２３ 凸条
２４ 六角部
２５ 雌ネジ
２６ 留置具（棒部材）
２７ 雌ネジ
３１ 主幹部材
３２ 結合部材
３３ 軸孔
３４ 横穴
３５ 端面穴
３６ 側面孔 DESCRIPTION OF SYMBOLS 11 Embedded shaft 12 Convex strip 13 Concave 14 Middle hole 15 Hexagon part 21 Fastening bolt 22 Indwelling tool (lag screw type)
23 Convex ridge 24 Hexagon part 25 Female screw 26 Indwelling tool (bar member)
27 Female Thread 31 Main Trunk 32 Coupling Member 33 Shaft Hole 34 Side Hole 35 End Face Hole 36 Side Hole

Claims (1)

主幹部材（３１）の側面に結合部材（３２）の端面を結合する締結具であって、
主幹部材（３１）の側面を貫通する軸孔（３３）に配置され且つ軸孔（３３）方向に中孔（１４）を有する埋設軸（１１）と、
前記結合部材（３２）の側面に形成された側面孔（３６）に差し込まれ且つ雌ネジ（２７）を有する留置具（２６）と、
前記留置具（２６）を前記埋設軸（１１）に引き寄せる締結ボルト（２１）と、
を備え、
前記埋設軸（１１）の側周面には、主幹部材（３１）に食い込む螺旋状の凸条（１２）が形成されており、
前記締結ボルト（２１）は、前記中孔（１４）から差し込まれ、前記結合部材（３２）の端面から延びる端面穴（３５）を経て前記雌ネジ（２７）に螺合しており、
前記側面孔（３６）は矩形断面で、前記留置具（２６）は、該側面孔（３６）に応じた矩形断面の棒部材であることを特徴とする締結具。 A fastener for coupling the end surface of the coupling member (32) to the side surface of the main trunk member (31),
An embedded shaft (11) disposed in a shaft hole (33) penetrating the side surface of the main trunk member (31) and having an intermediate hole (14) in the direction of the shaft hole (33);
A detainer (26) inserted into a side hole (36) formed in a side surface of the coupling member (32) and having a female screw (27) ;
A fastening bolt (21) for pulling the indwelling tool (26) toward the embedded shaft (11) ;
With
Spiral ridges (12) that bite into the main trunk member (31) are formed on the side peripheral surface of the embedded shaft (11) ,
The fastening bolt (21) is inserted from the middle hole (14) and screwed into the female screw (27) through an end surface hole (35) extending from an end surface of the coupling member (32).
The fastener according to claim 1, wherein the side hole (36) has a rectangular cross section, and the indwelling tool (26) is a bar member having a rectangular cross section corresponding to the side hole (36) .
JP2007300700A 2007-11-20 2007-11-20 Fastener Active JP5002428B2 (en)

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JP2017125302A (en) * 2016-01-12 2017-07-20 株式会社ちくま建設工業 Construction method for post construction anchor for woods

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JP6031744B2 (en) * 2011-10-17 2016-11-24 株式会社竹屋 Fixing device
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017125302A (en) * 2016-01-12 2017-07-20 株式会社ちくま建設工業 Construction method for post construction anchor for woods

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