JP2013096197A

JP2013096197A - Connection structure

Info

Publication number: JP2013096197A
Application number: JP2011242763A
Authority: JP
Inventors: Yoshikuni Okura; 義邦大倉
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-04
Filing date: 2011-11-04
Publication date: 2013-05-20
Anticipated expiration: 2031-11-04
Also published as: JP5649553B2

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure which is used to attach the other member to each side face of one member, which is excellent in strength to bending moment, which can prevent the member from being bitten, and which is excellent also in versatility.SOLUTION: A connection structure of a trunk member 41 and a branch member 51 is realized by metal fittings 10, 11, a central body 21, screw shafts 30, 31, and the like. The metal fittings 10, 11 are held in a boundary between the trunk member 41 and the branch member 51, the central body 21 is rod-like body with a female thread 22 and a release hole 23, and each of the screw shafts 30, 31 has a protruding ridge 32 on its side face. On the side faces of the trunk member 41, one hole 43 and the other hole 46 intersecting with each other are processed, and the central body 21 is inserted into the center of one hole 43, while the screw shafts 30, 31 are screwed respectively into one hole 43 and the other hole 46 surrounding the central body. The metal fittings 10, 11 are attached to the trunk member 41 by a middle bolt 25 screwed into the central body 21 and a long bolt 38 passing through the release hole 23, and the trunk member 41 and the branch member 51 are connected with each other via the metal fittings 10, 11.

Description

本発明は、木造建築において、一本の部材の各側面に他の部材を取り付けた十字状の連結構造に関する。 The present invention relates to a cross-shaped connection structure in which other members are attached to each side of one member in a wooden building.

木造建築において、一本の柱の各側面に梁の端面を取り付けた十字状の連結構造は、様々な箇所で使用されている。このような連結構造で、梁を柱に取り付ける方法は様々だが、その一例を図８に示す。この図では、金具を介して個々の梁を柱に取り付けており、四個の金具は同一形状で、対向する一対の金具をボルトとナットで柱に引き寄せている。また金具の前面板には、位置決めのため、上下に並ぶ二個のホゾを設けてあり、さらにホゾの中心には、ボルトを差し込むための前孔を設けてある。なおホゾやボルトを差し込むため、柱にはホゾ穴や下孔を加工してある。 In wooden construction, a cross-shaped connection structure in which the end face of a beam is attached to each side of a single pillar is used in various places. Although there are various methods for attaching the beam to the column with such a connection structure, an example is shown in FIG. In this figure, each beam is attached to a pillar via a metal fitting, the four metal fittings have the same shape, and a pair of opposite metal fittings are drawn to the pillar with bolts and nuts. Further, the front plate of the metal fitting is provided with two ridges arranged vertically for positioning, and further, a front hole for inserting a bolt is provided at the center of the ridge. In addition, in order to insert the tenon and bolt, the tenon hole and the pilot hole are processed in the pillar.

図８は、四本の梁を同じ高さに据え付けることを想定しており、四個の金具は、同じ高さに配置する必要がある。しかし単純に金具を同じ高さに配置すると、直交する二本のボルトが柱の内部で干渉してしまい、金具を取り付けることができない。そこで図の金具は、ホゾを上端寄りに偏って配置してあり、上下反転させるとホゾの高さが変わる構造となっている。図のように、対向する二対の金具のうち、一対だけを上下反転させると、直交する二本のボルトが段違いになり、干渉を防止できる。 FIG. 8 assumes that four beams are installed at the same height, and the four brackets need to be arranged at the same height. However, if the metal parts are simply arranged at the same height, two orthogonal bolts interfere with each other inside the pillar, and the metal parts cannot be attached. In view of this, the metal fittings shown in the figure have a structure in which the tenon is biased toward the upper end and the height of the tenon changes when it is turned upside down. As shown in the figure, when only one pair of two opposing metal fittings is turned upside down, two orthogonal bolts are stepped and interference can be prevented.

本願と関連のある先行技術の例として、以下の特許文献が挙げられる。特許文献１では、複数の木材の接合構造が開示されており、一の木材の側面に他の木材を十字状に接合している。一の木材には、板状とＴ字状の接合金物を組み込み、接合金物の板状部を十字状に突出させる。そして、突出する板状部を他の木材に差し込み、双方をボルトなどで一体化すると、一の木材と他の木材が接合される。この接合構造は、一本の木材にあらかじめ接合金物を組み込んでおくことで、現場作業を迅速化できるなどの特徴を有する。 The following patent documents are mentioned as an example of the prior art relevant to this application. In patent document 1, the joining structure of several timber is disclosed, and the other timber is joined to the side surface of one timber in the shape of a cross. In one piece of wood, a plate-shaped and T-shaped joint metal are incorporated, and the plate-shaped portion of the joint metal is projected in a cross shape. Then, when the protruding plate-like portion is inserted into another wood and both are integrated with a bolt or the like, one wood and the other wood are joined. This joining structure has a feature that the work on site can be speeded up by incorporating a joining hardware into one piece of wood in advance.

特許文献２では、柱の側面に梁を取り付けるための柱梁取付金物が開示されており、柱の内部に十字状の柱側金物を埋め込み、また梁の端部に梁側金物を埋め込み、両金物をボルトで一体化している。柱側金物は、柱の両側面を貫通する主円筒金物と、主円筒金物の側面中央から突出する副円筒金物と、で構成され、主円筒金物と副円筒金物のそれぞれの端面にボルトを差し込み、梁側金物を引き寄せている。この柱梁取付金物は、梁に作用する引張荷重のほか圧縮荷重に対する強度も優れており、梁が柱にめり込むことを防止できる。 Patent Document 2 discloses a column beam mounting hardware for mounting a beam to a side surface of a column. A cross-shaped column side hardware is embedded inside the column, and a beam side hardware is embedded at the end of the beam. Hardware is integrated with bolts. The column-side hardware consists of a main cylindrical hardware that penetrates both sides of the column and a sub-cylindrical hardware that protrudes from the center of the side of the main cylindrical hardware, and bolts are inserted into the respective end faces of the main cylindrical hardware and the sub-cylindrical hardware. , Pulling the beam side hardware. The column beam mounting hardware has excellent strength against compressive load in addition to tensile load acting on the beam, and can prevent the beam from sinking into the column.

特開平１０−２２７０７１号公報Japanese Patent Laid-Open No. 10-227071 特開平１１−２２９４９４号公報JP-A-11-229494

一本の柱の側面に四本の梁を十字状に連結する場合、通常は本願の図８のような方法で十分で、四個の金具を同一形状とすることで、量産によるコストダウンなどの効果を期待できる。しかし、梁に作用する曲げモーメントが大きい場合、図の金具では不利な点がある。図の金具は、上下反転させて使用することを想定しており、ボルトを差し込む前孔の配置に制約がある。そのため、前孔の間隔を極限まで広くすることができず、曲げモーメントに対する踏ん張りが効きにくく、大きな曲げモーメントに対して強度が不足する恐れがある。特に、図中の上下反転させた金具は、前面板の上端からボルトまでの距離が長く、条件が一段と厳しくなる。 When four beams are connected in a cross shape to the side of one pillar, the method shown in Fig. 8 of the present application is usually sufficient. By making the four brackets the same shape, cost reduction due to mass production, etc. The effect of can be expected. However, if the bending moment acting on the beam is large, the metal fittings in the figure have disadvantages. The metal fittings in the figure are assumed to be used upside down, and there are restrictions on the arrangement of the front holes into which the bolts are inserted. For this reason, the distance between the front holes cannot be made as wide as possible, the struts against the bending moment are difficult to work, and the strength may be insufficient for a large bending moment. In particular, the metal fittings turned upside down in the figure have a long distance from the upper end of the front plate to the bolt, and the conditions become more severe.

特許文献１や特許文献２で開示されている技術は、本願の図８とは構造が異なるため、曲げモーメントに対する強度に問題はない。しかし特許文献１では、四方向に延びる梁（他の木材）のうち、対向する二本が柱（一の木材）の側面と面接触しており、梁が柱にめり込む恐れがある。さらに強度を確保するには、多数の固定金物を木材に打ち込む必要があり、作業量が増大する。また、特許文献２で開示されている柱側金物は、梁のめり込みを防止するため、柱の横断面に応じた形状とする必要があり、汎用性に乏しい。しかも副円筒金物の周辺で螺合箇所が多く、経年によって緩みが生じる恐れがある。 Since the technology disclosed in Patent Document 1 and Patent Document 2 has a different structure from that of FIG. 8 of the present application, there is no problem in strength against a bending moment. However, in Patent Document 1, two beams facing each other among four beams (other timbers) extending in four directions are in surface contact with the side surfaces of the columns (one timber), and the beams may be sunk into the columns. Furthermore, in order to ensure strength, it is necessary to drive a large number of fixed hardware into the wood, which increases the amount of work. Moreover, in order to prevent the penetration of a beam, the pillar side metal object currently disclosed by patent document 2 needs to be made into the shape according to the cross section of a pillar, and lacks versatility. In addition, there are many screwing points around the sub-cylindrical hardware, and there is a risk of loosening over time.

本発明はこうした実情を基に開発されたもので、一本の部材の各側面に他の部材を取り付けるために用い、曲げモーメントに対する強度に優れ、また部材のめり込みを防止でき、しかも汎用性にも優れた連結構造の提供を目的としている。 The present invention has been developed based on such circumstances, and is used to attach other members to each side of a single member. It is excellent in strength against bending moments, can prevent the member from being sunk, and is also versatile. The purpose is to provide an excellent connection structure.

前記の課題を解決するための請求項１記載の発明は、幹部材の各側面に枝部材を連結するためのもので、前記幹部材の側面に接触する前面板と、前記枝部材の端部に設けたスリットに差し込む側面板と、からなる金具を用い、前記枝部材と前記側面板は、双方を貫通する係止具で一体化してあり、また、両端面に雌ネジを有し且つ側面に抜け孔を有する棒状の中心体と、側面に螺旋状の凸条を有し且つ両端面を貫通する貫通孔を有するネジ軸棒と、を用い、前記幹部材の同一横断面上には、側面を貫通して十字状に交差する一方孔と他方孔を設け、該交差する一方孔と他方孔は、前記幹部材の長手方向に間隔をあけて複数設けてあり、前記中心体は、前記一方孔に差し込み、該中心体の抜け孔は、交差する前記他方孔とほぼ同心に揃い、前記ネジ軸棒は、前記一方孔と前記他方孔の両端面にねじ込んであり、前記金具は、前記幹部材の各側面に対向配置し且つ前記幹部材の長手方向に沿って並ぶ前記ネジ軸棒の端面と接しており、前記一方孔を挟んで対向する前記金具は、前記貫通孔を経て前記中心体の雌ネジと螺合する中ボルトで固定してあり、また、前記他方孔を挟んで対向する前記金具は、前記貫通孔と前記抜け孔を経て前記金具同士を結ぶ長ボルトとこれに螺合するナットで固定してあることを特徴とする連結構造である。 The invention according to claim 1 for solving the above problem is for connecting a branch member to each side surface of the trunk member, and a front plate contacting the side surface of the trunk member, and an end portion of the branch member The branch member and the side plate are integrated with a locking tool penetrating both sides, and have female screws at both end surfaces and side surfaces. On the same cross section of the trunk member, using a rod-shaped center body having a through hole and a screw shaft rod having a spiral protrusion on the side surface and a through hole penetrating both end surfaces, One hole and the other hole intersecting in a cross shape through the side surface are provided, and a plurality of the intersecting one hole and the other hole are provided at intervals in the longitudinal direction of the trunk member, Inserted into one hole, the through hole of the central body is aligned approximately concentrically with the other hole intersecting, The screw shaft rod is screwed into both end surfaces of the one hole and the other hole, and the metal fitting is disposed opposite to each side surface of the trunk member and arranged along the longitudinal direction of the trunk member. The metal fittings that are in contact with the end face and are opposed to each other with the one hole interposed therebetween are fixed with an intermediate bolt that is screwed into the female screw of the central body through the through hole, and are opposed to each other with the other hole interposed therebetween. The metal fitting is a connection structure characterized in that a long bolt that connects the metal fittings through the through hole and the through hole and a nut that is screwed to the long bolt are fixed.

本発明は、木造建築において、一本の柱の各側面に梁の端面を取り付けた十字状の連結構造に関するものだが、柱と梁との連結以外にも使用でき、汎用性を確保するため、柱を幹部材と称して、梁を枝部材と称するものとする。幹部材と枝部材は、いずれも集成材を含む木製で矩形断面であることを前提とするが、幹部材と枝部材の幅が一致している必要はなく、幹部材が幅広で、枝部材が幅狭であっても構わない。さらに幹部材の一側面には、一本ではなく複数本の枝部材を取り付ける場合もある。 The present invention relates to a cross-shaped connection structure in which the end face of a beam is attached to each side of a single pillar in a wooden building, but it can be used for other than the connection between a pillar and a beam. The column is referred to as a trunk member, and the beam is referred to as a branch member. The trunk member and the branch member are both presumed to have a rectangular cross section made of wood containing laminated timber, but the width of the trunk member and the branch member does not have to be the same, the trunk member is wide, and the branch member May be narrow. Furthermore, a plurality of branch members may be attached to one side surface of the trunk member instead of one.

金具は、幹部材と枝部材との間に介在して双方を一体化するためのもので、幹部材の側面に接触する前面板と、この前面板から直角に突出して枝部材に差し込む側面板と、からなり、従来から普及している物と同様の形状である。側面板を差し込むため、枝部材の端部には、長手方向に延びるスリットをあらかじめ加工しておく。なお一本の枝部材に対して一個の金具を使用するため、本発明では複数の金具を使用することになるが、原則として、全ての金具は同一形状とする。 The metal fitting is for interposing between the trunk member and the branch member so as to integrate both. The front plate that contacts the side surface of the trunk member, and the side plate that protrudes perpendicularly from the front plate and is inserted into the branch member. It has the same shape as that which has been widely used. In order to insert the side plate, a slit extending in the longitudinal direction is processed in advance at the end of the branch member. In addition, since one metal fitting is used for one branch member, a plurality of metal fittings are used in the present invention. In principle, all metal fittings have the same shape.

幹部材の側面に接触した金具は、ボルトやナットで固定する。そのため金具の前面板には、ボルトの軸部を差し込むための孔を設けておく。また金具を枝部材に取り付ける際は、側面板を枝部材のスリットに差し込み、次に枝部材の側面から側面板に向けて棒状の係止具を打ち込む。係止具は、抜け落ちがなければドリフトピンやボルトなどを自在に選択できる。なお係止具を打ち込むため、枝部材と側面板の両方には、あらかじめ孔を設けておく。 The metal fitting that contacts the side surface of the trunk member is fixed with bolts or nuts. Therefore, a hole for inserting a shaft portion of the bolt is provided in the front plate of the metal fitting. When attaching the metal fitting to the branch member, the side plate is inserted into the slit of the branch member, and then a bar-shaped locking tool is driven from the side surface of the branch member toward the side plate. As for the locking tool, a drift pin, a bolt or the like can be freely selected as long as it does not fall off. In order to drive the locking tool, holes are provided in advance in both the branch member and the side plate.

一方孔と他方孔は、金具を固定するボルトを差し込むための孔で、幹部材の側面を貫通している。本発明では、幹部材の各側面に枝部材を取り付けるため、幹部材の側面に二方向の孔を設ける必要があり、それらを識別するため、直交する一方を一方孔と称して、他方を他方孔と称するものとする。一方孔と他方孔は、幹部材の同一横断面に設けてあり、幹部材の内部で連通している。なお同一横断面の一方孔と他方孔は、それぞれ一列で単純な十字状とすることが多いが、複数列とする場合もある。 The one hole and the other hole are holes for inserting bolts for fixing the metal fitting, and penetrate the side surface of the trunk member. In the present invention, in order to attach the branch member to each side surface of the trunk member, it is necessary to provide holes in two directions on the side surface of the trunk member. In order to identify them, one orthogonal to the other is referred to as one hole and the other to the other It shall be called a hole. The one hole and the other hole are provided in the same cross section of the trunk member and communicate with each other inside the trunk member. Note that one hole and the other hole of the same cross section are often in a single row and a simple cross shape, but may be in a plurality of rows.

中心体は、一方孔の中に差し込む金属製の棒状のもので、一方孔に無理なく差し込み可能な大きさとする。中心体の両端面には、雌ネジを設けてあり、金具を固定するボルトを螺合することができる。さらに中心体の側面には、反対側に貫通する抜け孔を設けてある。抜け孔は、他方孔に差し込むボルトを通過させるためのもので、中心体を一方孔に差し込む際、抜け孔と他方孔をほぼ同心に揃える。なお抜け孔にボルトを差し込むと、中心体は移動不能になる。 The central body is a metal rod-like material that is inserted into one hole, and has a size that can be easily inserted into one hole. Female screws are provided on both end faces of the central body, and bolts for fixing the metal fittings can be screwed together. Furthermore, a through-hole penetrating the opposite side is provided on the side surface of the central body. The through hole is for allowing a bolt to be inserted into the other hole to pass therethrough, and when the central body is inserted into the one hole, the through hole and the other hole are aligned substantially concentrically. When the bolt is inserted into the hole, the center body cannot be moved.

ネジ軸棒は、一方孔や他方孔にねじ込む金属製の円柱状のもので、側面には螺旋状に延びる凸条が突出しており、汎用のラグスクリューと同様の形状である。凸条が一方孔や他方孔の内周に食い込むことで、ネジ軸棒が幹部材と強固に一体化して、ネジ軸棒に作用するあらゆる荷重を分散して幹部材に伝達でき、荷重や経年による幹部材のヒビ割れを防止できる。中心体を所定の位置に差し込んだ後、これを取り囲む一方孔と他方孔の全ての端面からネジ軸棒をねじ込んでいく。なおネジ軸棒には、内部にボルトを通過させるため、両端面の中心を貫く貫通孔を設ける。 The screw shaft rod is a metal columnar shape screwed into one hole or the other hole, and has a spiral protruding protrusion on the side surface, and has the same shape as a general-purpose lag screw. Since the protrusions bite into the inner periphery of one hole or the other hole, the screw shaft rod is firmly integrated with the trunk member, and any load acting on the screw shaft rod can be dispersed and transmitted to the trunk member. It is possible to prevent cracking of the trunk member due to. After the center body is inserted into a predetermined position, the screw shaft rod is screwed from all end faces of the one hole and the other hole surrounding the center body. The screw shaft rod is provided with a through-hole penetrating the center of both end faces in order to allow the bolt to pass inside.

同一横断面で交差する一方孔と他方孔は、幹部材の長手方向に間隔をあけて二組以上設けて、それぞれに中心体とネジ軸棒を埋め込む。そして、幹部材の同一側面に並ぶ一方孔を塞ぐように金具を対向配置した後、金具側からボルト（中ボルト）を差し込み、ネジ軸棒の貫通孔を経て中心体の雌ネジに螺合させて締め上げると、一方孔に面する金具が固定される。 Two or more sets of one hole and the other hole intersecting in the same cross section are provided at intervals in the longitudinal direction of the trunk member, and the central body and the screw shaft rod are embedded in each. Then, after the metal fittings are arranged opposite to each other so as to block one hole arranged on the same side surface of the trunk member, a bolt (medium bolt) is inserted from the metal fitting side and screwed into the female screw of the central body through the through hole of the screw shaft rod. When tightened, the metal fitting facing one hole is fixed.

同様に、幹部材の同一側面に並ぶ他方孔を塞ぐように金具を対向配置した後、一方の金具からボルト（長ボルト）を差し込み、その先端を手前側のネジ軸棒の貫通孔から中心体の抜け孔を経て、さらに奥側のネジ軸棒の貫通孔から対向する金具の前面板に到達させる。そしてボルトの先端にナットを螺合して締め上げると、他方孔に面する金具が固定される。 Similarly, after placing the metal fittings facing each other so as to close the other hole on the same side of the trunk member, a bolt (long bolt) is inserted from one metal fitting, and the tip is centered through the through hole of the screw shaft rod on the front side. And through the through hole of the screw shaft rod on the far side, it reaches the front plate of the opposite metal fitting. When a nut is screwed onto the tip of the bolt and tightened, the metal fitting facing the other hole is fixed.

一方孔や他方孔に埋め込んだ中心体やネジ軸棒にボルトを差し込み、金具を幹部材の各側面に固定した後、枝部材を金具に差し込み、双方を貫通する係止具を打ち込むと、金具を介して幹部材と枝部材が連結される。この発明は、中心体を用いることで直交するボルトを同一横断面に配置可能で、全ての金具について、前面板の両端付近にボルトを差し込むことができる。そのため金具は、枝部材に作用する曲げモーメントに対して踏ん張りが効きやすく、強度面で優れている。さらに、ネジ軸棒の一端面と幹部材の側面との段差をなくすことで、金具とネジ軸棒が面接触して、枝部材が幹部材にめり込むことを防止できる。 After inserting bolts into the center body and screw shafts embedded in one hole or the other hole, fixing the metal fittings to each side of the trunk member, inserting the branch member into the metal fittings, and driving a locking tool that penetrates both, The trunk member and the branch member are connected via the. In the present invention, orthogonal bolts can be arranged on the same cross section by using the central body, and the bolts can be inserted in the vicinity of both ends of the front plate for all the metal fittings. For this reason, the metal fitting is easy to strut against the bending moment acting on the branch member, and is excellent in strength. Furthermore, by eliminating the step between the one end surface of the screw shaft bar and the side surface of the trunk member, it is possible to prevent the metal member and the screw shaft rod from coming into surface contact and the branch member from being embedded in the trunk member.

請求項２記載の発明は、幹部材の各側面に枝部材を連結するためのもので、前記幹部材の側面に接触する前面板と、前記枝部材の端部に設けたスリットに差し込む側面板と、からなる金具を用い、前記枝部材と前記側面板は、双方を貫通する係止具で一体化してあり、また、両端面に雌ネジを有し且つ側面に抜け孔を有する棒状の中心体と、側面に螺旋状の凸条を有し且つ両端面を貫通する貫通孔を有するネジ軸棒と、側面に螺旋状の凸条を有し且つ両端面に雌ネジを有するネジ軸棒と、を用い、前記幹部材の同一横断面上には、側面を貫通して十字状に交差する一方孔と他方孔を設け、該交差する一方孔と他方孔は、前記幹部材の長手方向に間隔をあけて複数設けてあり、前記中心体は、前記一方孔に差し込み、該中心体の抜け孔は、交差する前記他方孔とほぼ同心に揃い、前記貫通孔を有するネジ軸棒は、前記一方孔の両端面と前記他方孔の一方の端面にねじ込んであり、前記雌ネジを有するネジ軸棒は、前記他方孔の残る一方の端面にねじ込んであり、前記金具は、前記幹部材の各側面に対向配置し且つ前記幹部材の長手方向に沿って並ぶ前記ネジ軸棒の端面と接しており、前記一方孔を挟んで対向する前記金具は、前記貫通孔を経て前記中心体の雌ネジと螺合する中ボルトで固定してあり、また、前記他方孔を挟んで対向する前記金具は、前記貫通孔と前記抜け孔を経て前記ネジ軸棒の雌ネジと螺合する長ボルトおよび反対側から差し込み前記ネジ軸棒の雌ネジと螺合する短ボルトで固定してあることを特徴とする連結構造である。 The invention according to claim 2 is for connecting a branch member to each side surface of the trunk member, a front plate contacting the side surface of the trunk member, and a side plate inserted into a slit provided at an end of the branch member. And the branch member and the side plate are integrated by a locking tool penetrating both of them, and also have a rod-shaped center having female threads on both end faces and through holes on the side faces. A screw shaft bar having a spiral protrusion on the side surface and a through-hole penetrating both end surfaces, and a screw shaft rod having a spiral protrusion on the side surface and female threads on both end surfaces Are provided on the same cross section of the trunk member with one hole and the other hole penetrating the side surface and intersecting in a cross shape, the one hole and the other hole intersecting in the longitudinal direction of the trunk member A plurality of the center bodies are provided at intervals, and the center body is inserted into the one hole. The screw shaft bar having the through-hole and aligned with the other hole is screwed into both end surfaces of the one hole and one end surface of the other hole, and the screw shaft bar having the female screw is The other end of the hole is screwed, and the metal fitting is disposed opposite to each side surface of the trunk member and is in contact with the end face of the screw shaft bar arranged along the longitudinal direction of the trunk member. The metal fittings that face each other across the hole are fixed with a middle bolt that is screwed into the female screw of the central body through the through hole, and the metal parts that face the other hole through the through hole And a long bolt that is screwed with the female screw of the screw shaft rod through the through hole and a short bolt that is inserted from the opposite side and screwed with the female screw of the screw shaft rod. is there.

請求項２記載の発明は、基本的に請求項１記載の発明と同じだが、他方孔の両端にねじ込むネジ軸棒のうち、一端側に限り、請求項１記載の発明とは異なるものを用いている。この異なるネジ軸棒は、両端を貫通する貫通孔がなく、両端に雌ネジを設けてあり、ボルトを螺合することができる。そして、他方孔を挟んで対向配置した金具のうち一方は、貫通孔と抜け孔を経てネジ軸棒の雌ネジと螺合する長ボルトで固定され、残る一方の金具は、隣接するネジ軸棒の雌ネジと螺合する短ボルトで固定される。 The invention described in claim 2 is basically the same as the invention described in claim 1, but the screw shaft rod screwed into both ends of the other hole is different from the invention described in claim 1 only on one end side. ing. This different screw shaft bar does not have a through-hole penetrating both ends, is provided with female screws at both ends, and can be screwed with a bolt. One of the metal fittings arranged opposite to each other across the other hole is fixed with a long bolt that is screwed with the female screw of the screw shaft rod through the through hole and the through hole, and the remaining one metal fitting is an adjacent screw shaft rod. It is fixed with a short bolt that engages with the female screw.

請求項１および２記載の発明のように、柱などの幹部材の各側面に枝部材を取り付ける連結構造において、幹部材の側面に一方孔と他方孔を加工して、そこに中心体とネジ軸棒を埋め込むことで、金具を固定するボルトは、直交する二方向とも、幹部材の同一横断面に揃えることができる。そのため全ての金具について、前面板の両端付近にボルトを差し込み可能で、踏ん張りが効く状態で幹部材に固定でき、枝部材に作用する曲げモーメントに対する強度が向上する。 In the connection structure in which the branch member is attached to each side surface of the trunk member such as a pillar as in the inventions of claims 1 and 2, one hole and the other hole are machined in the side surface of the trunk member, and the central body and the screw are provided there. By embedding the shaft rod, the bolts for fixing the metal fittings can be aligned with the same cross section of the trunk member in two orthogonal directions. Therefore, bolts can be inserted in the vicinity of both ends of the front plate for all the metal parts, and can be fixed to the trunk member in a state where the tension is effective, and the strength against the bending moment acting on the branch member is improved.

また、ネジ軸棒の一端面を金具と接触させることで、幹部材と枝部材に圧縮荷重が作用した場合でも、その荷重は金具からネジ軸棒に伝達され、さらにネジ軸棒の凸条全体を介して幹部材に分散していく。そのため、圧縮荷重で枝部材が幹部材にめり込むことを防止できる。これとは逆に、幹部材と枝部材に引張荷重が作用した場合も、その荷重はボルトからネジ軸棒に伝達され、同様に幹部材に分散していく。このように本発明は、幹部材と枝部材との境界付近の応力を緩和でき、経年変形が抑制される。 Moreover, even if a compressive load is applied to the trunk member and the branch member by bringing one end surface of the screw shaft rod into contact with the metal fitting, the load is transmitted from the metal fitting to the screw shaft rod, and the entire protrusion of the screw shaft rod It will be dispersed to the trunk member through. Therefore, it is possible to prevent the branch member from sinking into the trunk member due to the compressive load. On the contrary, when a tensile load is applied to the trunk member and the branch member, the load is transmitted from the bolt to the screw shaft bar and is similarly distributed to the trunk member. Thus, this invention can relieve | stress the stress of the boundary vicinity of a trunk member and a branch member, and aged deformation is suppressed.

そのほか、幹部材の中で隣接する中心体とネジ軸棒は、密着させる必要がなく隙間があっても構わない。そのため、幹部材の横断面形状に応じてこれらを都度製造する必要はなく、汎用性に優れており、コストダウンも実現する。ただし各ボルトについては、ねじ込みに支障がないよう、適した長さの物を使用する。また金具についても、全てを同一形状とすることができ、量産によるコストダウンを期待できる。 In addition, the central body and the screw shaft bar adjacent to each other in the trunk member do not need to be in close contact and may have a gap. Therefore, it is not necessary to manufacture each time according to the cross-sectional shape of a trunk member, it is excellent in versatility, and cost reduction is also realized. However, for each bolt, use an appropriate length so as not to hinder the screwing. In addition, all of the metal fittings can have the same shape, and cost reduction due to mass production can be expected.

本発明による連結構造の具体例を示す斜視図である。It is a perspective view which shows the specific example of the connection structure by this invention. 図１の幹部材に中心体とネジ軸棒を埋め込んだ状態の斜視図である。FIG. 2 is a perspective view of a state in which a central body and a screw shaft bar are embedded in the trunk member of FIG. 1. 図１の幹部材に枝部材を取り付けている状態の斜視図である。It is a perspective view of the state which has attached the branch member to the trunk member of FIG. 図３のＡ−Ａ線およびＢ−Ｂ線の断面図である。ただし四本の枝部材を金具に取り付けた状態で描いてある。It is sectional drawing of the AA line and BB line of FIG. However, the four branch members are drawn attached to the metal fittings. 請求項２記載の発明の具体例を示す斜視図で、図１の連結構造を一部変更したものである。It is a perspective view which shows the specific example of invention of Claim 2, and changes the connection structure of FIG. 1 partially. 幹部材の横断面を細長の矩形状として、その幅広の側面に二本の枝部材を取り付ける連結構成の斜視図である。It is a perspective view of the connection composition which makes the cross section of a trunk member into the shape of an elongate rectangle, and attaches two branch members to the wide side. 図６の幹部材に枝部材を取り付けた状態の斜視図である。It is a perspective view of the state which attached the branch member to the trunk member of FIG. 木造建築において、一本の柱の各側面に梁の端面を取り付ける十字状の連結構造の一例を示す斜視図である。In a wooden building, it is a perspective view which shows an example of the cross-shaped connection structure which attaches the end surface of a beam to each side surface of one pillar.

図１は、本発明による連結構造の具体例を示しており、柱の各側面に梁の端面を取り付けており、柱を中心として梁が十字状に配置される。本発明は、柱と梁との連結以外にも汎用的に使用できるため、柱を幹部材４１と称して、梁を枝部材５１と称している。幹部材４１は、地盤などに据え付けられた強固な部材で、対する枝部材５１は、幹部材４１によって架空に支持される。なお幹部材４１と枝部材５１のいずれとも、集成材を含む木製であることを前提とする。また図の幹部材４１は正方形断面だが、その各側面に取り付ける枝部材５１は、縦長の矩形断面である。四本の枝部材５１は、横断面形状が同一で、さらに取り付け高さも同一である。 FIG. 1 shows a specific example of a connecting structure according to the present invention, in which end surfaces of beams are attached to the respective side surfaces of the columns, and the beams are arranged in a cross shape around the columns. Since the present invention can be used for general purposes other than the connection between a column and a beam, the column is referred to as a trunk member 41 and the beam is referred to as a branch member 51. The trunk member 41 is a strong member installed on the ground or the like, and the corresponding branch member 51 is supported aerial by the trunk member 41. Note that it is assumed that both the trunk member 41 and the branch member 51 are made of wood containing laminated wood. Further, the trunk member 41 in the figure has a square cross section, but the branch member 51 attached to each side surface thereof has a vertically long rectangular cross section. The four branch members 51 have the same cross-sectional shape and the same mounting height.

個々の枝部材５１は、金具１０、１１を介して幹部材４１に取り付ける。金具１０、１１は、鋼板を成形したもので、四個とも同一形状で、幹部材４１の側面に接触する前面板１２と、前面板１２の両側端から直角に突出する二枚の側面板１３と、で構成され、枝部材５１の端部には、側面板１３を差し込むため、長手方向に延びる二列のスリット５３を加工してある。側面板１３を枝部材５１に差し込んだ後、双方を貫通する棒状の係止具を打ち込むと、枝部材５１は金具１０、１１と一体化する。 The individual branch members 51 are attached to the trunk member 41 via the metal fittings 10 and 11. The metal fittings 10 and 11 are formed of steel plates, all of which have the same shape, the front plate 12 that contacts the side surface of the trunk member 41, and the two side plates 13 that protrude at right angles from both side ends of the front plate 12. In order to insert the side plate 13 at the end of the branch member 51, two rows of slits 53 extending in the longitudinal direction are processed. After the side plate 13 is inserted into the branch member 51, the branch member 51 is integrated with the metal fittings 10, 11 when a rod-shaped locking tool penetrating both sides is driven.

係止具は、棒状であればよく、ボルトなども使用可能だが、図ではドリフトピン５７を使用している。ドリフトピン５７を差し込むため、枝部材５１の側面には、反対面に貫通する横孔５４を上下に三列加工してあり、また側面板１３には、二枚とも同心で側溝１６と側孔１７を設けてある。施工時は、あらかじめ一番上の横孔５４にのみドリフトピン５７を打ち込み、これを枝部材５１の仮置きに利用する。なお枝部材５１端面の中央には、金具１０、１１の前面板１２などを収容するため、段差部５５を加工してある。 The locking tool only needs to be in the form of a rod, and a bolt or the like can be used, but in the figure, a drift pin 57 is used. In order to insert the drift pin 57, the side surface of the branch member 51 is formed with three rows of horizontal holes 54 penetrating the opposite surface, and the side plate 13 is concentric with the side groove 16 and the side hole. 17 is provided. At the time of construction, the drift pin 57 is driven in advance only in the uppermost horizontal hole 54 and used for temporarily placing the branch member 51. In the center of the end face of the branch member 51, a stepped portion 55 is processed to accommodate the front plate 12 of the metal fittings 10, 11.

金具１０、１１を幹部材４１の側面に取り付けるため、幹部材４１の内部には、中心体２１とネジ軸棒３０、３１を埋め込む。そのため幹部材４１の側面には、同一横断面で一組となる一方孔４３と他方孔４６を加工する。一方孔４３は、幹部材４１の一側面から反対面に貫通しており、他方孔４６は、一方孔４３に隣接する側面から反対面に貫通しており、両孔は、幹部材４１の内部で直角に交差して連通している。さらに本発明では、金具１０、１１を取り付けるため、幹部材４１の長手方向に一定の距離を隔てて、複数組の一方孔４３と他方孔４６を加工する。なお両孔の内径は同じで、またいずれとも幹部材４１の側面中心に位置している。 In order to attach the metal fittings 10 and 11 to the side surface of the trunk member 41, the center body 21 and the screw shaft rods 30 and 31 are embedded in the trunk member 41. Therefore, one hole 43 and the other hole 46 that form a pair with the same cross section are processed on the side surface of the trunk member 41. The one hole 43 penetrates from one side surface of the trunk member 41 to the opposite surface, the other hole 46 penetrates from the side surface adjacent to the one hole 43 to the opposite surface, and both holes are inside the trunk member 41. At right angles to communicate with each other. Further, in the present invention, in order to attach the metal fittings 10 and 11, a plurality of sets of one hole 43 and the other hole 46 are processed at a certain distance in the longitudinal direction of the trunk member 41. Both holes have the same inner diameter, and both are located in the center of the side surface of the trunk member 41.

中心体２１は、一方孔４３に差し込む円柱状の金属棒で、その両端面の中心には、軸方向に延びる雌ネジ２２を設けてあり、さらに側面には、反対側に貫通する抜け孔２３を設けてある。なお中心体２１の外径は、一方孔４３の内径よりもわずかに小さい。そのため、無理なく一方孔４３に差し込むことができる。そして中心体２１を一方孔４３に差し込む際は、他方孔４６との交差部付近に到達させて、抜け孔２３と他方孔４６をほぼ同心に揃える。 The central body 21 is a cylindrical metal rod inserted into the one hole 43. A female screw 22 extending in the axial direction is provided at the center of both end faces, and a through hole 23 penetrating to the opposite side is provided on the side face. Is provided. The outer diameter of the central body 21 is slightly smaller than the inner diameter of the one hole 43. Therefore, it can be inserted into the one hole 43 without difficulty. When the center body 21 is inserted into the one hole 43, the center body 21 is made to reach the vicinity of the intersection with the other hole 46 so that the through hole 23 and the other hole 46 are substantially concentric.

ネジ軸棒３０、３１は、円柱状の金属棒で、その側面には螺旋状に延びる凸条３２が突出しており、汎用のコーチスクリューと同様の外観である。ただしネジ軸棒３０、３１は、全体を幹部材４１に埋め込むため、頭部がなく、その代用として一端に六角部３３を設けてあり、無理なく工具を掛けることができる。さらにネジ軸棒３０、３１の中心には、両端面を貫く貫通孔３４を設けてある。またネジ軸棒３０、３１の外径（凸条３２を除く）は、一方孔４３や他方孔４６の内径とほぼ等しく、凸条３２だけが幹部材４１に食い込んでいき、ネジ軸棒３０、３１は幹部材４１と強固に一体化する。なお図のネジ軸棒３０、３１は、全て同一形状である。 The screw shaft rods 30 and 31 are cylindrical metal rods, and projecting ridges 32 projecting spirally on the side surfaces thereof, and have the same appearance as a general-purpose coach screw. However, since the screw shaft rods 30 and 31 are entirely embedded in the trunk member 41, there is no head portion, and a hexagonal portion 33 is provided at one end as an alternative, so that a tool can be easily applied. Furthermore, a through-hole 34 is provided in the center of the screw shaft rods 30 and 31 so as to penetrate both end faces. Further, the outer diameters of the screw shaft rods 30 and 31 (excluding the ridges 32) are substantially equal to the inner diameters of the one hole 43 and the other hole 46, and only the ridges 32 bite into the trunk member 41. 31 is firmly integrated with the trunk member 41. The screw shaft rods 30 and 31 shown in the figure are all the same shape.

中心体２１を一方孔４３に差し込んだ後、中心体２１から四方向に延びる一方孔４３と他方孔４６の全てにネジ軸棒３０、３１をねじ込んでいく。ネジ軸棒３０、３１は、六角部３３を後方に向けて一方孔４３や他方孔４６の端部に接触させた後、六角部３３に工具を掛けてねじ込んでいく。ねじ込みは、ネジ軸棒３０、３１の後端面と幹部材４１の側面が段差なく揃うまで続ける。ねじ込みが終わると、一方孔４３側のネジ軸棒３０は、中心体２１の端面と対向しており、また他方孔４６側のネジ軸棒３１は、中心体２１の抜け孔２３と対向する。 After the center body 21 is inserted into the one hole 43, the screw shaft rods 30 and 31 are screwed into all of the one hole 43 and the other hole 46 extending in four directions from the center body 21. The screw shaft rods 30 and 31 are screwed with a tool applied to the hexagonal portion 33 after the hexagonal portion 33 is directed rearward and brought into contact with the end of the one hole 43 or the other hole 46. The screwing is continued until the rear end surfaces of the screw shaft rods 30 and 31 and the side surface of the trunk member 41 are aligned without any step. When the screwing is finished, the screw shaft rod 30 on the one hole 43 side faces the end surface of the center body 21, and the screw shaft rod 31 on the other hole 46 side faces the through hole 23 of the center body 21.

一方孔４３と他方孔４６は、上下に二組加工してあり、それぞれに一個の中心体２１を差し込み、これを取り囲むように四個のネジ軸棒３０、３１をねじ込む。このように中心体２１とネジ軸棒３０、３１を埋め込むと、幹部材４１の一側面には、上下に二個のネジ軸棒３０、３１が並び、これを利用して金具１０、１１を取り付ける。金具１０、１１の前面板１２には、ネジ軸棒３０、３１と同心になる上下二個の前孔１５を設けてあり、前孔１５と貫通孔３４を同心に揃えると、ボルトを差し込むことができる。 The one hole 43 and the other hole 46 are formed into two sets in the vertical direction, and one central body 21 is inserted into each of the four holes, and the four screw shaft rods 30 and 31 are screwed so as to surround them. When the central body 21 and the screw shaft rods 30 and 31 are embedded in this way, two screw shaft rods 30 and 31 are arranged vertically on one side of the trunk member 41, and the metal fittings 10 and 11 are attached using this. Install. The front plate 12 of the metal fittings 10 and 11 is provided with two upper and lower front holes 15 that are concentric with the screw shaft rods 30 and 31, and when the front hole 15 and the through hole 34 are aligned concentrically, a bolt is inserted. Can do.

他方孔４６を挟んで対向する二個の金具１１は、長ボルト３８とナット３９で幹部材４１に取り付ける。対向する二個の金具１１を幹部材４１の側面に接触させて、前孔１５と貫通孔３４を上下とも同心に揃えた後、図の左下側の金具１１に長ボルト３８を差し込む。そして長ボルト３８の先端を幹部材４１の反対側に突出させて、これにナット３９を螺合して締め上げると、二個の金具１１が幹部材４１の側面に取り付けられる。なお長ボルト３８は、ネジ軸棒３１の貫通孔３４二箇所のほか、中心体２１の抜け孔２３を貫通している。そのため長ボルト３８を差し込むと、中心体２１は移動できなくなる。 The two metal fittings 11 facing each other across the other hole 46 are attached to the trunk member 41 with long bolts 38 and nuts 39. Two opposing metal fittings 11 are brought into contact with the side surface of the trunk member 41 so that the front hole 15 and the through hole 34 are aligned concentrically with each other, and then a long bolt 38 is inserted into the metal fitting 11 on the lower left side in the drawing. Then, when the tip of the long bolt 38 is protruded to the opposite side of the trunk member 41, and the nut 39 is screwed and tightened, the two metal fittings 11 are attached to the side surface of the trunk member 41. The long bolt 38 passes through the through hole 23 of the central body 21 in addition to the two through holes 34 of the screw shaft bar 31. Therefore, when the long bolt 38 is inserted, the center body 21 cannot move.

他方孔４６を挟んで対向する金具１１を取り付けた後、一方孔４３を挟んで対向する二個の金具１０を中ボルト２５で取り付ける。中ボルト２５は、個々の金具１０の前孔１５から差し込み、貫通孔３４を経て中心体２１の雌ネジ２２に螺合する。なお中心体２１は、長ボルト３８で固定されており、中ボルト２５を締め上げても、移動することはない。また、対向する中ボルト２５を均等に締め上げることで、長ボルト３８を屈曲させることもない。 After attaching the metal fittings 11 that face each other across the other hole 46, the two metal fittings 10 that face each other across the one hole 43 are attached with the medium bolt 25. The intermediate bolt 25 is inserted from the front hole 15 of each metal fitting 10 and screwed into the female screw 22 of the center body 21 through the through hole 34. The central body 21 is fixed with a long bolt 38 and does not move even if the middle bolt 25 is tightened. Further, the long bolt 38 is not bent by tightening the opposed middle bolts 25 evenly.

図２は、図１の幹部材４１に中心体２１とネジ軸棒３０、３１を埋め込んだ状態である。幹部材４１の側面を貫通する一方孔４３と他方孔４６は、上下に二組加工してあり、上下とも、一方孔４３と他方孔４６との交差部に中心体２１が差し込まれており、その四方を取り囲むようにネジ軸棒３０、３１がねじ込まれている。なお各ネジ軸３０、３１の六角部３３側の端面は、幹部材４１の側面と段差なく並んでいる。 FIG. 2 shows a state in which the central body 21 and the screw shaft rods 30 and 31 are embedded in the trunk member 41 of FIG. The one hole 43 and the other hole 46 penetrating the side surface of the trunk member 41 are processed in two sets up and down, and the center body 21 is inserted into the intersection of the one hole 43 and the other hole 46 both in the upper and lower sides. Screw shaft rods 30 and 31 are screwed so as to surround the four sides. The end surfaces of the screw shafts 30, 31 on the hexagonal portion 33 side are aligned with the side surfaces of the trunk member 41 without a step.

一方孔４３を挟んで対向する一対の金具１０は、中心体２１の雌ネジ２２に螺合する中ボルト２５で取り付けられ、また他方孔４６を挟んで対向する一対の金具１１は、中心体２１の抜け孔２３を貫通する長ボルト３８とこれに螺合するナット３９で取り付けられる。四個の金具１０、１１を幹部材４１に取り付けた後、吊り上げた枝部材５１を下降させていき、側面板１３をスリット５３に差し込み、さらに横孔５４から側孔１７に向けてドリフトピン５７を打ち込むと、枝部材５１が金具１０、１１に固定される。 The pair of metal fittings 10 that are opposed to each other with the hole 43 interposed therebetween are attached by middle bolts 25 that are screwed into the female screw 22 of the center body 21, and the pair of metal fittings 11 that are opposed to each other across the other hole 46 are the center body 21. Are attached with a long bolt 38 that passes through the through hole 23 and a nut 39 that is screwed into the long bolt 38. After attaching the four metal fittings 10 and 11 to the trunk member 41, the suspended branch member 51 is lowered, the side plate 13 is inserted into the slit 53, and the drift pin 57 is further directed from the lateral hole 54 toward the side hole 17. , The branch member 51 is fixed to the metal fittings 10 and 11.

図３は、図１の幹部材４１に枝部材５１を取り付けている状態である。枝部材５１の側面には、上下に三列の横孔５４を加工してあるが、その一番上にはあらかじめドリフトピン５７を打ち込んである。したがって吊り上げた枝部材５１を下降させていくと、そのドリフトピン５７が金具１０、１１の側溝１６で受け止められ、枝部材５１は、金具１０、１１に仮置きされた状態になり、その後、無理なく残りの横孔５４にドリフトピン５７を打ち込むことができる。なおこの図では、四個の金具１０、１１の高さが等しく、四本の枝部材５１も同じ高さに位置する。また枝部材５１は、幹部材４１よりも幅が狭くなっているが、当然ながら双方を同じ幅にしても構わない。 FIG. 3 shows a state in which the branch member 51 is attached to the trunk member 41 of FIG. On the side surface of the branch member 51, three rows of horizontal holes 54 are machined up and down, and a drift pin 57 is driven in advance at the top. Therefore, when the lifted branch member 51 is lowered, the drift pin 57 is received by the side groove 16 of the metal fittings 10 and 11, and the branch member 51 is temporarily placed on the metal fittings 10 and 11, and then it is impossible. It is possible to drive the drift pin 57 into the remaining lateral hole 54 instead. In this figure, the heights of the four metal fittings 10 and 11 are equal, and the four branch members 51 are located at the same height. Moreover, although the branch member 51 is narrower than the trunk member 41, it is a matter of course that both may have the same width.

図４は、図３のＡ−Ａ線およびＢ−Ｂ線の断面図である。ただし四本の枝部材５１を金具１０、１１に取り付けた状態で描いてある。Ａ−Ａ断面は、一方孔４３の中心に沿った切断面で、幹部材４１の真ん中に中心体２１が位置しており、その両側にネジ軸棒３０がねじ込まれている。また金具１０を取り付けている中ボルト２５は、二枚の側面板１３の間から差し込まれており、その軸部は前孔１５から貫通孔３４を経て中心体２１の雌ネジ２２に螺合している。さらに中心体２１の抜け孔２３には、紙面を貫通するように長ボルト３８が差し込まれている。なお中ボルト２５の頭部は、枝部材５１の段差部５５に収容されている。 4 is a cross-sectional view taken along lines AA and BB in FIG. However, the four branch members 51 are shown attached to the metal fittings 10 and 11. The AA cross section is a cut surface along the center of one hole 43, the central body 21 is located in the middle of the trunk member 41, and the screw shaft rod 30 is screwed on both sides thereof. Further, the middle bolt 25 to which the metal fitting 10 is attached is inserted from between the two side plates 13, and its shaft portion is screwed into the female screw 22 of the central body 21 through the through hole 34 from the front hole 15. ing. Further, a long bolt 38 is inserted into the through hole 23 of the center body 21 so as to penetrate the paper surface. The head of the middle bolt 25 is accommodated in the stepped portion 55 of the branch member 51.

Ｂ−Ｂ断面は、他方孔４６の中心に沿った切断面で、中心体２１は円断面で、その両側にネジ軸棒３１がねじ込まれている。また金具１１を取り付けている長ボルト３８は、左側から差し込まれており、その先端にナット３９を螺合してある。長ボルト３８とナット３９を締め上げると、対向する二個の金具１１が幹部材４１に取り付けられる。なお長ボルト３８の頭部やナット３９は、枝部材５１の段差部５５に収容されている。 The BB cross section is a cut surface along the center of the other hole 46, the center body 21 is a circular cross section, and the screw shaft bar 31 is screwed on both sides thereof. The long bolt 38 to which the metal fitting 11 is attached is inserted from the left side, and a nut 39 is screwed to the tip thereof. When the long bolt 38 and the nut 39 are tightened, the two opposing metal fittings 11 are attached to the trunk member 41. The head of the long bolt 38 and the nut 39 are accommodated in the stepped portion 55 of the branch member 51.

両断面とも、金具１０、１１を取り付けている中ボルト２５や長ボルト３８は、前面板１２の上下両端の近傍に差し込まれている。そのため全ての金具１０、１１は、枝部材５１に作用する曲げモーメントに対して踏ん張りが効きやすく、強度面で優れている。またネジ軸棒３０、３１は、凸条３２によって幹部材４１と強固に一体化しており、あえて中心体２１と接触させる必要がなく、中心体２１とネジ軸棒３０、３１は、一方孔４３側と他方孔４６側のいずれとも非接触で隙間がある。このように、中心体２１やネジ軸棒３０、３１の長さは、幹部材４１の横断面形状に追従させる必要がなく、汎用性が高い。 In both sections, the middle bolt 25 and the long bolt 38 to which the metal fittings 10 and 11 are attached are inserted in the vicinity of the upper and lower ends of the front plate 12. Therefore, all the metal fittings 10 and 11 are easily strutted against the bending moment acting on the branch member 51, and are excellent in strength. Further, the screw shaft rods 30 and 31 are firmly integrated with the trunk member 41 by the ridges 32 and do not need to be in contact with the center body 21, and the center body 21 and the screw shaft rods 30 and 31 have one hole 43. There is a non-contact gap on both the side and the other hole 46 side. Thus, the lengths of the central body 21 and the screw shaft rods 30 and 31 do not need to follow the cross-sectional shape of the trunk member 41 and are highly versatile.

ネジ軸棒３０、３１の端面は、いずれとも金具１０、１１の前面板１２と接触している。そのため幹部材４１と枝部材５１との間に作用する圧縮荷重は、幹部材４１の側面ではなく、ネジ軸棒３０、３１で受け止められ、枝部材５１が幹部材４１にめり込むことを防止できる。さらにネジ軸棒３０、３１で受け止められた圧縮荷重は、凸条３２全域を介して幹部材４１に分散していく。これとは逆に、幹部材４１と枝部材５１との間に作用する引張荷重は、中ボルト２５と中心体２１、または長ボルト３８とナット３９を介して、対向する側の金具１０、１１に伝達して、次にこの金具１０、１１と接触するネジ軸棒３０、３１の凸条３２全域を介して幹部材４１に分散していく。これらの作用により、幹部材４１の応力集中を緩和できる。 Both end surfaces of the screw shaft rods 30 and 31 are in contact with the front plate 12 of the metal fittings 10 and 11. Therefore, the compressive load acting between the trunk member 41 and the branch member 51 is received not by the side surface of the trunk member 41 but by the screw shaft rods 30 and 31, and the branch member 51 can be prevented from sinking into the trunk member 41. Furthermore, the compressive load received by the screw shaft rods 30 and 31 is distributed to the trunk member 41 through the entire protrusion 32. On the contrary, the tensile load acting between the trunk member 41 and the branch member 51 is applied to the metal fittings 10, 11 on the opposite side via the intermediate bolt 25 and the central body 21, or the long bolt 38 and the nut 39. And then distributed to the trunk member 41 through the entire protrusion 32 of the threaded shaft rods 30 and 31 that come into contact with the metal fittings 10 and 11. By these actions, the stress concentration of the trunk member 41 can be relaxed.

金具１０、１１を取り付けるボルト類は、この図のように上下二列に限定されるものではなく、連結構造の規模に応じて三列以上とすることもある。そのほか中心体２１の抜け孔２３は、長ボルト３８を差し込む際の利便性を考慮して、強度上の問題がない範囲で大径化または長孔化することもできる。 The bolts for attaching the metal fittings 10 and 11 are not limited to two upper and lower rows as shown in this figure, and may be three or more rows depending on the scale of the connection structure. In addition, in consideration of convenience when inserting the long bolt 38, the through hole 23 of the central body 21 can be increased in diameter or elongated as long as there is no problem in strength.

図５は、請求項２記載の発明の具体例で、図１の連結構造を一部変更したものである。この図において、幹部材４１の各側面に同一形状の金具１０、１１を取り付ける点や、上下に一方孔４３と他方孔４６を加工して、一方孔４３に中心体２１を差し込み、さらに一方孔４３の両側にネジ軸棒３０をねじ込む点は、図１と全く同じである。また他方孔４６についても、その一端側（図の左下側）にねじ込むネジ軸棒３１は、図１と同じである。ただし、他方孔４６の残る一方にねじ込むネジ軸棒３６（図の右上側）は、図１と異なる。このネジ軸棒３６は、貫通孔３４の代替として両端を貫通する雌ネジ３５を設けてあり、ボルトを螺合できる。 FIG. 5 is a specific example of the invention described in claim 2 and is obtained by partially changing the connecting structure of FIG. In this figure, the metal fittings 10 and 11 having the same shape are attached to the respective side surfaces of the trunk member 41, one hole 43 and the other hole 46 are machined up and down, the central body 21 is inserted into one hole 43, and one hole The screw shaft rod 30 is screwed on both sides of 43, exactly the same as in FIG. Further, the screw shaft bar 31 to be screwed into one end side (lower left side in the figure) of the other hole 46 is the same as that in FIG. However, the screw shaft rod 36 (upper right side in the figure) to be screwed into the remaining one of the other hole 46 is different from FIG. The threaded shaft rod 36 is provided with female threads 35 penetrating both ends as an alternative to the through hole 34, and can be screwed with a bolt.

図の左下の金具１１は、長ボルト３８で取り付ける。ただし長ボルト３８は、抜け孔２３を通過した先で、ネジ軸棒３６の雌ネジ３５に螺合させる。また図の右上の金具１１は、短ボルト３７で取り付ける。短ボルト３７は、長ボルト３８と同様、ネジ軸棒３６の雌ネジ３５に螺合させる。このように雌ネジ３５を設けたネジ軸棒３６を使用することで、長ボルト３８の全長を抑制できる。これによって、長ボルト３８の弾性変形量が小さくなる。 The lower left metal fitting 11 is attached with a long bolt 38. However, the long bolt 38 is screwed into the female screw 35 of the screw shaft rod 36 after passing through the hole 23. The metal fitting 11 on the upper right side of the figure is attached with a short bolt 37. Similar to the long bolt 38, the short bolt 37 is screwed into the female screw 35 of the screw shaft rod 36. By using the screw shaft rod 36 provided with the female screw 35 in this way, the total length of the long bolt 38 can be suppressed. This reduces the amount of elastic deformation of the long bolt 38.

図６は、幹部材４１の横断面を細長の矩形状として、その幅広の側面に二本の枝部材５１を取り付ける連結構成を示している。本発明は、幹部材４１の一側面に二本以上の枝部材５１を同じ高さで取り付けることもでき、図では、幹部材４１の幅広の側面に横二列の他方孔４６を加工してある。そのため一本の一方孔４３は、二箇所で他方孔４６と交差しており、これに対応して中心体２８は、二列の他方孔４６を跨ぐ長さで、抜け孔２３を二箇所に設けてある。なお、一方孔４３を挟んで対向する二個の金具１０は、中ボルト２５で取り付け、他方孔４６を挟んで対向する四個の金具１１は、長ボルト３８とナット３９で取り付ける。 FIG. 6 shows a connecting configuration in which the trunk member 41 has a rectangular cross section, and two branch members 51 are attached to the wide side surface. In the present invention, two or more branch members 51 can be attached to one side surface of the trunk member 41 at the same height. In the figure, the other holes 46 in two horizontal rows are processed on the wide side surface of the trunk member 41. is there. Therefore, the one hole 43 intersects with the other hole 46 at two locations, and the center body 28 has a length straddling the two rows 46 of the other holes 46 corresponding to this, and the through holes 23 at two locations. It is provided. The two metal fittings 10 facing each other across the one hole 43 are attached by the medium bolt 25, and the four metal fittings 11 facing each other across the other hole 46 are attached by the long bolt 38 and the nut 39.

図７は、図６の幹部材４１に枝部材５１を取り付けた状態である。一本の幹部材４１の側面には、六本の枝部材５１が取り付けられている。一個の中心体２８は、六個のネジ軸棒３０、３１で取り囲まれ、また個々の金具１０、１１は、ネジ軸棒３０、３１と接触しており、枝部材５１が幹部材４１にめり込むことはない。なお中心体２８は、一方孔４３や他方孔４６の配置に応じた形状とする必要がある。 FIG. 7 shows a state in which the branch member 51 is attached to the trunk member 41 of FIG. Six branch members 51 are attached to the side surface of one trunk member 41. One central body 28 is surrounded by six screw shaft rods 30, 31, and each metal fitting 10, 11 is in contact with the screw shaft rods 30, 31, and the branch member 51 is recessed into the trunk member 41. There is nothing. The central body 28 needs to have a shape corresponding to the arrangement of the one hole 43 and the other hole 46.

１０金具（一方孔に面するもの）
１１金具（他方孔に面するもの）
１２前面板
１３側面板
１５前孔
１６側溝
１７側孔
２１中心体
２２雌ネジ（中心体の両端面）
２３抜け孔
２５中ボルト
２８中心体（長尺・二箇所の抜け孔）
３０ネジ軸棒（一方孔にねじ込むもの、内部に貫通孔）
３１ネジ軸棒（他方孔にねじ込むもの、内部に貫通孔）
３２凸条
３３六角部
３４貫通孔
３５雌ネジ（ネジ軸棒の中）
３６ネジ軸棒（他方孔にねじ込むもの、内部に雌ネジ）
３７短ボルト
３８長ボルト
３９ナット
４１幹部材（柱）
４３一方孔
４６他方孔
５１枝部材（梁）
５３スリット
５４横孔
５５段差部
５７ドリフトピン（係止具） 10 metal fittings (facing one hole)
11 Hardware (facing the other hole)
12 Front plate 13 Side plate 15 Front hole 16 Side groove 17 Side hole 21 Center body 22 Female screw (both end surfaces of the center body)
23 Borehole 25 Medium bolt 28 Central body (long, two holes)
30 Screw shaft rod (screwed into one hole, through hole inside)
31 Screw shaft rod (screwed into the other hole, through hole inside)
32 ridge 33 hex 34 through hole 35 female screw (in screw shaft rod)
36 Screw shaft rod (screw to be screwed into the other hole, female screw inside)
37 Short bolt 38 Long bolt 39 Nut 41 Trunk member (column)
43 One hole 46 The other hole 51 Branch member (beam)
53 Slit 54 Side hole 55 Stepped portion 57 Drift pin (locking tool)

Claims

幹部材（４１）の各側面に枝部材（５１）を連結するためのもので、
前記幹部材（４１）の側面に接触する前面板（１２）と、前記枝部材（５１）の端部に設けたスリット（５３）に差し込む側面板（１３）と、からなる金具（１０、１１）を用い、前記枝部材（５１）と前記側面板（１２）は、双方を貫通する係止具（５７）で一体化してあり、
また、両端面に雌ネジ（２２）を有し且つ側面に抜け孔（２３）を有する棒状の中心体（２１、２８）と、側面に螺旋状の凸条（３２）を有し且つ両端面を貫通する貫通孔（３４）を有するネジ軸棒（３０、３１）と、を用い、
前記幹部材（４１）の同一横断面上には、側面を貫通して十字状に交差する一方孔（４３）と他方孔（４６）を設け、該交差する一方孔（４３）と他方孔（４６）は、前記幹部材（４１）の長手方向に間隔をあけて複数設けてあり、
前記中心体（２１、２８）は、前記一方孔（４３）に差し込み、該中心体（２１、２８）の抜け孔（２３）は、交差する前記他方孔（４６）とほぼ同心に揃い、
前記ネジ軸棒（３０、３１）は、前記一方孔（４３）と前記他方孔（４６）の両端面にねじ込んであり、
前記金具（１０、１１）は、前記幹部材（４１）の各側面に対向配置し且つ前記幹部材（４１）の長手方向に沿って並ぶ前記ネジ軸棒（３０、３１）の端面と接しており、前記一方孔（４３）を挟んで対向する前記金具（１０）は、前記貫通孔（３４）を経て前記中心体（２１、２８）の雌ネジ（２２）と螺合する中ボルト（２５）で固定してあり、また、前記他方孔（４６）を挟んで対向する前記金具（１１）は、前記貫通孔（３４）と前記抜け孔（２３）を経て前記金具（１１）同士を結ぶ長ボルト（３８）とこれに螺合するナット（３９）で固定してあることを特徴とする連結構造。 For connecting the branch member (51) to each side surface of the trunk member (41),
Metal fittings (10, 11) comprising a front plate (12) contacting the side surface of the trunk member (41) and a side plate (13) inserted into a slit (53) provided at an end of the branch member (51). ), The branch member (51) and the side plate (12) are integrated with a locking tool (57) penetrating both,
Moreover, it has a rod-shaped center body (21, 28) having a female screw (22) on both end faces and a through hole (23) on the side face, and a spiral protrusion (32) on the side face, and both end faces. A screw shaft rod (30, 31) having a through hole (34) penetrating through
On the same cross section of the trunk member (41), there are provided one hole (43) and the other hole (46) that penetrate the side surface and intersect in a cross shape, and the intersecting one hole (43) and the other hole ( 46) are provided with a plurality of intervals in the longitudinal direction of the trunk member (41),
The central body (21, 28) is inserted into the one hole (43), and the through hole (23) of the central body (21, 28) is substantially concentric with the intersecting other hole (46),
The screw shaft rod (30, 31) is screwed into both end faces of the one hole (43) and the other hole (46),
The metal fittings (10, 11) are arranged to face each side surface of the trunk member (41) and are in contact with end faces of the screw shaft bars (30, 31) arranged along the longitudinal direction of the trunk member (41). The metal fittings (10) facing each other with the one hole (43) interposed therebetween are intermediate bolts (25) screwed into the female screws (22) of the central body (21, 28) through the through holes (34). ), And the metal fitting (11) facing the other hole (46) is connected to the metal fitting (11) through the through hole (34) and the through hole (23). A connecting structure characterized by being fixed by a long bolt (38) and a nut (39) screwed into the long bolt (38).

幹部材（４１）の各側面に枝部材（５１）を連結するためのもので、
前記幹部材（４１）の側面に接触する前面板（１２）と、前記枝部材（５１）の端部に設けたスリット（５３）に差し込む側面板（１３）と、からなる金具（１０、１１）を用い、前記枝部材（５１）と前記側面板（１２）は、双方を貫通する係止具（５７）で一体化してあり、
また、両端面に雌ネジ（２２）を有し且つ側面に抜け孔（２３）を有する棒状の中心体（２１、２８）と、側面に螺旋状の凸条（３２）を有し且つ両端面を貫通する貫通孔（３４）を有するネジ軸棒（３０、３１）と、側面に螺旋状の凸条（３２）を有し且つ両端面に雌ネジ（３５）を有するネジ軸棒（３６）と、を用い、
前記幹部材（４１）の同一横断面上には、側面を貫通して十字状に交差する一方孔（４３）と他方孔（４６）を設け、該交差する一方孔（４３）と他方孔（４６）は、前記幹部材（４１）の長手方向に間隔をあけて複数設けてあり、
前記中心体（２１、２８）は、前記一方孔（４３）に差し込み、該中心体（２１、２８）の抜け孔（２３）は、交差する前記他方孔（４６）とほぼ同心に揃い、
前記貫通孔（３４）を有するネジ軸棒（３０、３１）は、前記一方孔（４３）の両端面と前記他方孔（４６）の一方の端面にねじ込んであり、
前記雌ネジ（３５）を有するネジ軸棒（３６）は、前記他方孔（４６）の残る一方の端面にねじ込んであり、
前記金具（１０、１１）は、前記幹部材（４１）の各側面に対向配置し且つ前記幹部材（４１）の長手方向に沿って並ぶ前記ネジ軸棒（３０、３１、３６）の端面と接しており、前記一方孔（４３）を挟んで対向する前記金具（１０）は、前記貫通孔（３４）を経て前記中心体（２１、２８）の雌ネジ（２２）と螺合する中ボルト（２５）で固定してあり、また、前記他方孔（４６）を挟んで対向する前記金具（１１）は、前記貫通孔（３４）と前記抜け孔（２３）を経て前記ネジ軸棒（３６）の雌ネジ（３５）と螺合する長ボルト（３８）および反対側から差し込み前記ネジ軸棒（３６）の雌ネジ（３５）と螺合する短ボルト（３７）で固定してあることを特徴とする連結構造。
For connecting the branch member (51) to each side surface of the trunk member (41),
Metal fittings (10, 11) comprising a front plate (12) contacting the side surface of the trunk member (41) and a side plate (13) inserted into a slit (53) provided at an end of the branch member (51). ), The branch member (51) and the side plate (12) are integrated with a locking tool (57) penetrating both,
Moreover, it has a rod-shaped center body (21, 28) having a female screw (22) on both end faces and a through hole (23) on the side face, and a spiral protrusion (32) on the side face, and both end faces. Screw shaft rod (30, 31) having a through hole (34) penetrating through the screw shaft, and a screw shaft rod (36) having a spiral protrusion (32) on the side surface and female screws (35) on both end surfaces. And
On the same cross section of the trunk member (41), there are provided one hole (43) and the other hole (46) that penetrate the side surface and intersect in a cross shape, and the intersecting one hole (43) and the other hole ( 46) are provided with a plurality of intervals in the longitudinal direction of the trunk member (41),
The central body (21, 28) is inserted into the one hole (43), and the through hole (23) of the central body (21, 28) is substantially concentric with the intersecting other hole (46),
The screw shaft rod (30, 31) having the through hole (34) is screwed into both end faces of the one hole (43) and one end face of the other hole (46),
The screw shaft rod (36) having the female screw (35) is screwed into the remaining one end face of the other hole (46),
The metal fittings (10, 11) are arranged to face each side surface of the trunk member (41) and end faces of the screw shaft bars (30, 31, 36) arranged along the longitudinal direction of the trunk member (41). The metal fittings (10) that are in contact and face each other across the one hole (43) are intermediate bolts that are screwed into the female screws (22) of the central body (21, 28) through the through holes (34). The metal fitting (11) fixed by (25) and opposed across the other hole (46) passes through the through hole (34) and the through hole (23), and the screw shaft rod (36). ) And a long bolt (38) screwed with the female screw (35) and a short bolt (37) inserted from the opposite side and screwed with the female screw (35) of the screw shaft rod (36). Characteristic connecting structure.