JP2007239960A - Joining structure and joining method of steel material, and building of frame construction - Google Patents

Joining structure and joining method of steel material, and building of frame construction Download PDF

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JP2007239960A
JP2007239960A JP2006066611A JP2006066611A JP2007239960A JP 2007239960 A JP2007239960 A JP 2007239960A JP 2006066611 A JP2006066611 A JP 2006066611A JP 2006066611 A JP2006066611 A JP 2006066611A JP 2007239960 A JP2007239960 A JP 2007239960A
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drill screw
drill
diameter hole
steel
hole
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Yoshimichi Kawai
良道 河合
Seizaburo Azuma
清三郎 東
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Nippon Steel Corp
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Nippon Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a joining structure and joining method of a steel material, and a building of a steel construction capable of improving construction efficiency in joining by a drill screw. <P>SOLUTION: The joining structure of the steel material for joining a superposed part of the mutual steel materials by using the drill screw, includes a tip hole 13 formed on the steel material 11 which is positioned on a head part side of the drill screw 1 and is joined. An outer diameter of the tip hole 13 is larger than that of a screw shaft part of the drill screw, and includes a large diameter hole 13a to which a drill screw top part 5 is fitted, and a small diameter hole 13f connected to the large diameter hole 13a. The small diameter hole 13f is formed to be smaller than a screw part outer diameter dimension of the drill screw 1, and includes a female screw hole provided and joined by the drill screw 1. The joining method of the steel material joins the steel materials 11, 12 while discharging chips chipped by the drill screw 1 from the large diameter hole 13a to an outside of the steel material 11 by the drill screw 1 to form the joining structure. The building of the steel construction is provided with the joining structure. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、鋼材の接合部における板状の鋼板相互を重合させて、ドリルねじにより接合する鋼材の接合構造および接合方法ならびに鉄骨造の建築物に関する。   The present invention relates to a joining structure and joining method of steel materials in which plate-shaped steel plates are polymerized at a joining portion of steel materials and joined by a drill screw, and a steel structure building.

従来、ドリルねじを用いた鋼材の接合構造として、スチールハウス等では、接合すべき鋼材における薄鋼板相互を重合すると共にこれらに渡って貫通配置するようにドリルねじを用いて接合することが知られている。前記のうように薄鋼板相互の接合では、高剛性の接合構造を前提としていない接合構造である。   Conventionally, as a steel material joining structure using a drill screw, in steel houses, it is known that thin steel plates in steel materials to be joined are superposed and joined using a drill screw so as to be penetrated through them. ing. As described above, the joining of thin steel sheets is a joining structure that does not assume a highly rigid joining structure.

ドリルねじにより鋼材を接合する場合、鋼材の板厚が薄い場合には、(1)ドリルねじにより削られた削りかすは、確実にドリルねじにより排出されるため、削りかす排出についての問題が生じることはない。また、(2)、ドリルねじによって空けられる孔の位置が多少偏心しても、鋼材が薄いために、確実の接合される鋼材が、ドリルねじのドリル刃により孔が空けられた後、タッピングされて接合されるため、ドリルねじの偏心されて接合されても特に問題にはならなかった。さらに、(3)接合される裏面の鋼板にドリルねじにおけるドリル刃により孔があく前に、ドリルネジのねじ山が表側の鋼板に干渉することがないため、ドリルねじの打ち込みが困難になることもない。   When joining steel materials using a drill screw, if the steel plate is thin, (1) the shavings shaved by the drill screw are reliably ejected by the drill screws, causing problems with the shavings discharge. There is nothing. (2) Even if the position of the hole drilled by the drill screw is slightly decentered, the steel material is thin, so that the steel material to be reliably joined is tapped after the hole is drilled by the drill blade of the drill screw. Because of the joining, there was no particular problem even when the drill screw was eccentric and joined. Furthermore, (3) before the drilled holes in the drill screws are drilled in the back steel plates to be joined, the drill screw threads do not interfere with the front steel plates, which may make it difficult to drive the drill screws. Absent.

また、従来、少なくとも一方の部材の板厚が2.3mm以上の鉄骨の柱と梁の接合、梁と梁の接合ならびに梁と小梁の接合(いずれも板状部相互の重合部の接合)においては、(1)溶接接合、(2)ボルト接合、リベット接合ならびに(3)高力ボルト接合が適用されていた(例えば、特許文献1〜3参照。)。ドリルねじによる接合は、板厚2.3mm厚以上の鉄骨の柱と梁の接合、梁と梁の接合ならびに梁と小梁の接合(いずれも板状部相互の重合部)においてはドリルねじによる接合は行われていなかった。   In addition, in the past, at least one member has a thickness of 2.3 mm or more in steel column-to-beam bonding, beam-to-beam bonding, and beam-to-beam bonding (both of overlapping portions between plate-like parts). (1) Welded joint, (2) Bolt joint, rivet joint and (3) High-strength bolt joint were applied (for example, refer to Patent Documents 1 to 3). Joining by drill screws is used for joining steel columns and beams with a thickness of 2.3 mm or more, joining beams and beams, and joining beams and small beams (all overlapping parts of plate parts). Was not done.

(1)前記の溶接接合では、接合される鋼材を溶接できる形状に加工し、さらに溶接時の熱により部材が変形しないように温度、溶接手順や拘束条件を管理して溶接を実施していた。また、めっきや塗装など予め防錆処理されていた鋼材を用いる場合にあっては、接合部のめっきや塗装などを剥離したうえ溶接接合し、溶接の後に損傷を受けた防錆処理部の補修も必要となっていた。   (1) In the above welding joint, the steel materials to be joined are processed into a shape that can be welded, and further, the temperature, welding procedure, and restraint conditions are controlled so that the member is not deformed by heat during welding. . In addition, when using steel materials that have been rust-prevented in advance, such as plating or painting, the plating and coating of the joints are peeled off, welded, and repaired to parts that have been damaged after welding. Was also needed.

(2)前記のボルト接合またはリベット接合では、接合される部材のすべてにボルトまたはリベットの軸径以上の孔を穿設したうえ、ボルトおよびナットまたはリベットにより一体化する接合方法としていた。このとき、両被接合部材の双方から作業する必要があった。   (2) In the above-described bolt joining or rivet joining, a hole having a diameter equal to or larger than the shaft diameter of the bolt or rivet is formed in all the members to be joined, and the joining method is such that the bolt and nut or rivet are integrated. At this time, it was necessary to work from both of the members to be joined.

(3)前記の高力ボルト接合では、前記(2)と同様の作業に加え、重合される部材の接触面を有効に摩擦力が生じるように表面処理する必要があった。
前記のように、(1)溶接接合では、開先加工等を含む溶接できる形状に加工、温度管理等、非常に煩雑で、接合コストも高くなると共に高度の熟練を要するという問題があった。
また、(2)前記のボルト接合またはリベット接合では、接合される部材のすべてにボルトまたはリベットの軸径以上の孔を穿設しなければならず、しかも接合部の表裏両側から作業する必要があり、接合作業効率が低いという問題がある。
また、前記(3)では、前記(2)に加えて摩擦接合面に有効に摩擦力が生じるように表面処理する必要があり、接合コストが増加する問題がある。
(3) In the high-strength bolt joint, in addition to the same operation as in the above (2), it is necessary to surface-treat the contact surface of the member to be polymerized so that a frictional force is effectively generated.
As described above, in (1) welding joining, there is a problem in that it is very complicated, such as processing into a weldable shape including groove processing, temperature management, etc., the joining cost increases, and high skill is required.
Also, (2) in the above-described bolt joint or rivet joint, it is necessary to drill holes larger than the shaft diameter of the bolt or rivet in all the members to be joined, and it is necessary to work from both the front and back sides of the joint portion. There is a problem that the joining work efficiency is low.
Further, in the above (3), in addition to the above (2), it is necessary to perform a surface treatment so that a frictional force is effectively generated on the friction bonding surface, and there is a problem that the bonding cost increases.

(比較的厚い板厚の鋼板相互の接合構造について)
前記従来の溶接接合のような作業時の管理や溶接後の防錆補修が不要となり、ボルトやリベットのように部材の両側から作業する必要が無くなり、高力ボルトのように摩擦力のための表面処理を必要としないため、作業効率が向上する接合構造であって、前記の(1)〜(3)課題を有利に解消することができる接合構造として、(4)鋼板板厚が2.3mmを越える比較的厚い板厚の鋼板相互の接合構造にも、ドリルねじによる接合が利用されつつあり、特許出願が行われている。
(About the joining structure of steel plates with relatively thick plate thickness)
Management at the time of work such as the conventional welding joint and rust prevention repair after welding are unnecessary, it is not necessary to work from both sides of the member like bolts and rivets, and it is necessary for frictional force like high strength bolts. Since the surface treatment is not required, the joining structure is improved in work efficiency, and the joining structure that can advantageously solve the problems (1) to (3) is as follows. Joining with a drill screw is also being used for a joining structure between steel plates having a relatively thick plate thickness exceeding 3 mm, and patent applications have been filed.

前記の(4)の比較的厚い板厚の鋼板相互の接合構造の場合について、図13を参照して説明すると、ドリルねじ1を鋼板12に対して垂直にねじ込むようにして、鋼板11、12相互を接合する構造である。   Referring to FIG. 13, the case (4) of the relatively thick steel plate joining structure described above will be described with reference to FIG. It is a structure that joins each other.

ドリルねじ1による鋼材相互の接合、特に鋼材における比較的厚い板厚の鋼板部相互の接合は、図13に示すように、(A)ドリルねじ1先端のドリル刃10により、接合される鋼板12の板厚を貫通する孔13gが先にあけられたのち、ドリルねじ1のドリルねじ部3により、鋼板12がタッピングされて、他方の鋼板11とドリルねじ1および鋼板12が密着接合される接合方法である。
各鋼板11,12に先孔が設けられていない場合では、ドリルねじ1のドリル刃10により各鋼板11,12に孔13gが開設された後に、ドリルねじ1頭部側に位置する鋼板11が、ドリルねじ1のドリルねじ部3によりタッピングされると、スムースに雌ねじをタッピングして設けることができるが、反対に、ドリルねじ1におけるドリル刃10により貫通孔13gが開設する前に、ドリルねじ1頭部側に位置する鋼板11がタッピングされ始めると、ドリル刃10による切削して進行する速度は、タッピングして進行する速度(ドリルねじ1回転でねじ1ピッチ分進行する速度)より格段に遅いため、タッピング不能になる特徴がある。
したがって、ドリルねじ1におけるドリル刃10により、ドリルねじ1の先端側よりに位置する下側の鋼板12に孔13gが開けられた後、タッピングされることが必要条件になったり、ドリルねじ1の頭部5側に位置する鋼板11に、ドリルねじ1のドリルねじ部3の外径寸法Dよりも十分内径の大きい大径孔13を設けることが必要になり、ドリルねじ部3が鋼板11の孔内面に干渉するのを防止するようにしている。
As shown in FIG. 13, the steel plates 12 joined by the drill blade 10 at the tip of the drill screw 1 are used for joining the steel materials by the drill screw 1 and particularly joining the steel plates having a relatively thick plate thickness. After the hole 13g penetrating the plate thickness is drilled first, the steel plate 12 is tapped by the drill screw portion 3 of the drill screw 1 so that the other steel plate 11, the drill screw 1 and the steel plate 12 are tightly joined. Is the method.
In the case where each steel plate 11, 12 is not provided with a leading hole, after the hole 13 g is opened in each steel plate 11, 12 by the drill blade 10 of the drill screw 1, the steel plate 11 located on the head side of the drill screw 1 is When tapped by the drill screw portion 3 of the drill screw 1, the female screw can be smoothly tapped, but on the contrary, before the through hole 13 g is opened by the drill blade 10 in the drill screw 1, the drill screw When the steel plate 11 located on the one head side begins to be tapped, the speed of cutting and progressing by the drill blade 10 is much higher than the speed of progressing by tapping (speed of progressing by one pitch of the screw by one rotation of the drill screw). Since it is slow, it has a feature that it cannot be tapped.
Therefore, the drill blade 10 in the drill screw 1 is required to be tapped after the hole 13g is opened in the lower steel plate 12 located on the lower side of the drill screw 1 or the drill screw 1 It is necessary to provide a large-diameter hole 13 having a sufficiently larger inner diameter than the outer diameter D of the drill screw portion 3 of the drill screw 1 in the steel plate 11 positioned on the head 5 side. The interference with the inner surface of the hole is prevented.

前記の必要条件を前提とした場合、または比較的厚い鋼板相互をドリルねじにより鋼材を接合する場合、鋼材の板厚が厚くなるにつれて、実際に施工した場合、次のような問題点が生じるようになった。先ず第1に、ドリルねじにより削られた削りかすの排出の問題(1)、第2に、ドリルねじによって空けられる孔の位置が偏心してしまうという問題(2)、その問題(2)に関連して第3に、裏面側の鋼板12に孔13gが開設される前に、ドリルネジのねじ山が表側の鋼板に干渉してしまい、ドリルねじの打ち込みが困難になるという問題(3)がある。   Assuming the above-mentioned requirements, or when joining steel materials with drill screws between relatively thick steel plates, the following problems may occur when actually constructed as the steel plate thickness increases: Became. First, the problem of discharging the shavings shaved by the drill screw (1), second, the problem that the position of the hole vacated by the drill screw is eccentric (2), and the problem (2) Thirdly, before the hole 13g is opened in the steel plate 12 on the back surface side, the thread of the drill screw interferes with the steel plate on the front side, and there is a problem (3) that it becomes difficult to drive the drill screw. .

また、鋼材の板厚が厚くなると、伝達させる応力も大きくなることを設計上期待されるから、ドリルねじが接合されるとき、鋼板の孔(先孔部分とドリル刃により開けられる孔の両方)の側面とドリルねじが支圧により有効に伝達できるようにする必要が生じるようになった。
実公昭56−4082号公報 実公昭56−55365号公報 特開2002−38608号公報
In addition, as the steel thickness increases, the design stress is expected to increase the stress to be transmitted. Therefore, when drill screws are joined, holes in the steel sheet (both the tip hole and the hole opened by the drill blade) Therefore, it is necessary to make it possible to transmit the side and drill screw effectively by bearing pressure.
Japanese Utility Model Publication No. 56-4082 Japanese Utility Model Publication No. 56-55365 JP 2002-38608 A

先ず、前記(1)のドリルねじによって削られた削りかすの問題について説明する。   First, the problem of shavings shaved by the drill screw (1) will be described.

ドリルねじ1を使用して鋼材(鋼板)相互を重合した状態で接合する場合、接合ドリルねじ1先端のドリル刃10により鋼板12に孔13gがあけられるが、図13に示すように、現在のドリルねじの接合工法では、削りかす13hが有効に排除されずに接合孔13g部分に残ることがある。   When using a drill screw 1 to join steel materials (steel plates) in a superposed state, a hole 13g is made in the steel plate 12 by the drill blade 10 at the tip of the joining drill screw 1, but as shown in FIG. In the drill screw joining method, the shavings 13h may not be effectively removed and remain in the joining hole 13g.

前記のように、削りかす13hが、ドリルねじ先端7と鋼板12の間に入り込むと、削りかす(切り粉)13hが、接合孔部分内において回転するドリルねじ部3を支承するベアリングのような効果を発生し、ドリルねじ先端7の刃10による鋼材切削効率を極端に低下させ、場合によってはドリルねじ1自体が空回りさせることもあるという問題があった。   As described above, when the shavings 13h enters between the drill screw tip 7 and the steel plate 12, the shavings (chip) 13h is like a bearing that supports the drill screw portion 3 that rotates in the joint hole portion. There is a problem that the effect is generated, the steel material cutting efficiency by the blade 10 at the tip 7 of the drill screw is extremely lowered, and the drill screw 1 itself may be idled in some cases.

例えば、図13に示すように、2枚の鋼板11,12を接合する場合には、ドリルねじ1の頭部側に位置して接合される表側の鋼板11に、ドリルねじ部3の山径より大きい径の先孔13を設けて、削りかす13hを排出することも考えられるが、しかしこの場合には、ドリルねじ1と鋼板12の先孔13との筒状の隙間Gが小さく、削りかす13hが有効に排除されないことがある。   For example, as shown in FIG. 13, when two steel plates 11, 12 are joined, the crest diameter of the drill screw portion 3 is attached to the steel plate 11 on the front side that is located on the head side of the drill screw 1 and joined. It is conceivable to provide a leading hole 13 having a larger diameter and discharge the shavings 13h. However, in this case, the cylindrical gap G between the drill screw 1 and the leading hole 13 of the steel plate 12 is small, so In some cases, the waste 13h is not effectively excluded.

これまで、ドリルねじ1の使用範囲は、鋼材11,12の板厚が2.3mm未満の板厚が主流であったため、削られる鋼材の削りかす(きりこ)13hの量が少なく、削られる部分から排除される部分までの距離が短いため、削りかす13hを確実に排出でき、削りかす13hについて大きな問題とならなかったが、鋼材の板厚が、2.3mm以上の板厚の接合にドリルねじ1を用いることが可能となり、このようになると、削りかす(きりこ)排出の問題が生じた。   Up to now, the use range of the drill screw 1 is that the thickness of the steel materials 11 and 12 is less than 2.3 mm, so the amount of shavings 13h of the steel material to be machined is small, and from the part to be machined Since the distance to the part to be removed is short, the shavings 13h could be discharged reliably, and the shavings 13h did not become a big problem, but the steel plate thickness was 2.3mm or more for joining with a drill screw 1 It became possible to use, and when this was the case, there was a problem of scouring.

前記の削りかすの問題については、ドリルねじ自体に工夫をすることも考えられるが、本発明では、被接合材となる鋼材(例えば、鋼板)側に有効な加工を施すことで、問題を解決しようとするものであり、できるかぎりドリルねじ1は、公知のドリルねじまたはこれに近い形態を利用することを前提とした発明である。   Regarding the problem of shavings, it is conceivable to devise the drill screw itself, but in the present invention, the problem is solved by applying effective processing to the steel material (for example, steel plate) side to be joined. The drill screw 1 is an invention based on the premise that a known drill screw or a form close to this is used as much as possible.

次に、前記の(2)ドリルねじにより空けられる孔が偏心する問題点について説明する。   Next, the problem (2) that the hole vacated by the drill screw is eccentric will be described.

図13に示すように、ドリルねじ1における頭部側に位置する鋼板11に設けられる大径孔13が、ドリルねじ1のドリル刃外径寸法D1およびドリルねじ部3の外径寸法Dよりも比較的大きいために、現行のドリルねじ1による鋼材の接合方法では、ドリルねじ1のドリル刃10が横方向の移動を拘束するようにガイドされておらず、ドリル刃10が横方向にずれて偏心し、ドリルねじ1先端により空けられる孔13gの位置が、横方向に偏芯してしまい、また、偏心してしまうと、ドリルねじ1のねじ部3が先孔13内周面をタッピングし始めてしまうという問題がある。このようになると、ドリルねじ1のねじ込みが困難になる。   As shown in FIG. 13, the large-diameter hole 13 provided in the steel plate 11 located on the head side in the drill screw 1 is larger than the drill blade outer diameter D1 of the drill screw 1 and the outer diameter D of the drill screw portion 3. Because of the relatively large size, the current method of joining steel materials using the drill screw 1 is not guided so that the drill blade 10 of the drill screw 1 restrains lateral movement, and the drill blade 10 is displaced laterally. The position of the hole 13g that is decentered and opened by the tip of the drill screw 1 is eccentric in the lateral direction, and when it is decentered, the screw portion 3 of the drill screw 1 begins to tap the inner peripheral surface of the tip hole 13. There is a problem of end. If it becomes like this, screwing of the drill screw 1 will become difficult.

また、ドリルねじ1が偏心した状態で接合されてしまうと、接合されたドリルねじ1の頭部5は、偏心した配置状態となるので、先孔13内面とドリルねじ1の外周面とは、接触している部分と、非接触している部分とが生じ、接合部に支圧耐力にむらが生じるという問題がある。   Further, if the drill screw 1 is joined in an eccentric state, the head 5 of the joined drill screw 1 is in an eccentric arrangement state, so that the inner surface of the tip hole 13 and the outer peripheral surface of the drill screw 1 are There exists a problem that the part which is contacting and the part which is not contacting arises, and a nonuniformity arises in bearing strength in a junction part.

したがって、課題(4)として、鋼材における鋼板とドリルねじが接合されるとき、鋼板の孔(先孔部分とドリル刃により開けられる孔の両方)の側面とドリルねじ外面が、支圧により有効に伝達できるようにする必要がある。   Therefore, as the problem (4), when the steel plate and the drill screw in the steel material are joined, the side surface of the hole of the steel plate (both the tip hole portion and the hole opened by the drill blade) and the outer surface of the drill screw are effectively supported by the bearing pressure. It needs to be able to communicate.

本発明は、前記の問題について、種々検討した結果、ドリルねじの頭部側に位置して接合される表面鋼材に設ける先孔の形状を工夫することにより、ドリルねじ接合時の削りかすを容易に排出することができ、ドリルねじの中心軸線と先孔の中心軸線を合致させるようにすることができ、また、前記の先孔の形状に面接触状態で密着するようにドリルねじの頭部形状を設定することにより、ドリルねじを用いた接合構造でも強固な接合構造を構成することができることを知見して本発明を完成させた。
本発明は、前記の課題を有利に解消することができ、ドリルねじ接合時の削りかすを容易に排出することができ、ドリルねじによる接合施工する場合の施工効率を向上させることができる鋼材の接合構造および接合方法並びに鉄骨造の建築物を提供することを目的とする。
As a result of various investigations on the above-mentioned problem, the present invention makes it easy to scrape the drill screw when joining it by devising the shape of the tip hole provided in the surface steel material to be joined on the head side of the drill screw. The center axis of the drill screw and the center axis of the tip hole can be matched, and the head of the drill screw can be in close contact with the shape of the tip hole in a surface contact state. By setting the shape, it was found that even a joint structure using a drill screw can constitute a strong joint structure, and the present invention has been completed.
The present invention can advantageously eliminate the above-described problems, can easily discharge shavings when joining a drill screw, and can improve the construction efficiency when joining with a drill screw. An object is to provide a joining structure, a joining method, and a steel structure building.

前記の課題を有利に解決するために、第1発明の鋼材の接合構造においては、ドリルねじを用いて鋼材相互の重合部を接合する鋼材の接合構造において、ドリルねじの頭部側に位置して接合される鋼材に先孔が設けられ、前記先孔は、ドリルねじのねじ軸部よりも外径寸法が大きく、かつドリルねじ頭部を嵌設する大径孔と、その大径孔に接続する小径孔とにより構成され、かつ前記小径孔は、ドリルねじのねじ部外径寸法よりも小さくされて、前記ドリルねじにより雌ねじ孔が設けられて接合されていることを特徴とする。
また、第2発明では、第1発明の鋼材の接合構造において、小径孔は、ドリルねじ先端のドリル刃の外径寸法よりも大きく、かつドリルねじにおけるねじ部の外径寸法よりも小さい内径とされていることを特徴とする。
また、第3発明では、第1発明の鋼材の接合構造において、小径孔は、ドリルねじ先端のドリル刃の外径寸法より小さい内径とされ、ドリルねじにおけるドリル刃により切削されると共にドリルねじ部により雌ねじ孔がタッピングされていることを特徴とする。
また、第4発明では、第1発明〜第3発明のいずれかの鋼材の接合構造において、小径孔における大径孔よりの端部に截頭円錐状の傾斜面が設けられていることを特徴とする。
また、第5発明では、第1発明〜第4発明のいずれかの鋼材の接合構造において、大径孔は、小径孔に向って漸次径が小さくなる傾斜面を有する大径孔とされ、これにドリルねじの頭部が嵌設されていることを特徴とする。
また、第6発明では、第1発明〜第5発明のいずれかの鋼材の接合構造において、大径孔における小径孔側の端部に、ドリルねじのねじ部外径寸法よりも大きく、かつ大径孔内面に接続する環状の平坦面部が設けられ、その平坦面部を介して、小径孔の内面と大径孔の内面とが接続されていることを特徴とする。
また、第7発明では、第1発明〜第6発明のいずれかの鋼材の接合構造において、
大径孔にドリルねじの頭部側が収容されていることを特徴とする。
また、第8発明の鋼材の接合方法においては、第1発明〜第7発明の鋼材の接合構造とするにあたり、ドリルねじにより削られた削りかすを、前記大径孔から鋼材の外側に排出しながら、鋼材を接合することを特徴とする。
また、第9発明の鋼材の接合方法においては、第1発明、第2発明,第4発明〜第7発明のいずれかの鋼材の接合構造とするにあたり、最初に前記小径孔の内面によりドリルねじのドリル刃外側面をガイドして、小径孔の中心軸線と先孔の中心軸線を合致させるようにすると共に、鋼材とドリルねじの偏心を防止しながらドリルねじにより鋼材を接合することを特徴とする。
また、第10発明の鋼材の接合方法においては、第1発明、第3発明,第4発明〜第7発明のいずれかの鋼材の接合構造とするにあたり、最初に小径孔の軸方向端面に、ドリルねじのドリル刃先端傾斜面を当接して、小径孔の中心軸線にドリルねじの軸線を合わせるようにガイドして、ドリルねじの偏心を防止しながらドリルねじをねじ込むことを特徴とする。
また、第11発明の鉄骨造の建築物においては、第1発明〜第7発明のいずれかの鋼材の接合構造が、鉄骨部材の柱と梁の接合部、柱と柱または梁と梁の接合部あるいは梁と小梁の接合部等の鉄骨部材の接合部に用いられていることを特徴とする。
In order to solve the above-described problem advantageously, in the steel material joining structure according to the first aspect of the present invention, in the steel material joining structure in which the overlapping portions of the steel materials are joined using a drill screw, the steel material is located on the head side of the drill screw. The steel material to be joined is provided with a front hole, the front hole having a larger outer diameter than the screw shaft portion of the drill screw, and a large diameter hole into which the drill screw head is fitted, and the large diameter hole. The small-diameter hole is smaller than the outer diameter of the threaded portion of the drill screw, and is provided with a female screw hole and joined by the drill screw.
In the second invention, in the steel material joining structure according to the first invention, the small-diameter hole has an inner diameter smaller than the outer diameter dimension of the drill blade at the tip of the drill screw and smaller than the outer diameter dimension of the screw portion in the drill screw. It is characterized by being.
In the third invention, in the steel material joining structure according to the first invention, the small-diameter hole has an inner diameter smaller than the outer diameter of the drill blade at the tip of the drill screw and is cut by the drill blade in the drill screw and the drill screw portion. The internal thread hole is tapped by the above.
Further, in the fourth invention, in the steel material joining structure according to any one of the first to third inventions, a truncated cone-shaped inclined surface is provided at an end portion of the small diameter hole from the large diameter hole. And
In the fifth invention, in the steel material joining structure according to any one of the first to fourth inventions, the large-diameter hole is a large-diameter hole having an inclined surface whose diameter gradually decreases toward the small-diameter hole. The head of the drill screw is fitted to the head.
In the sixth invention, in the steel material joining structure according to any one of the first to fifth inventions, the end of the large-diameter hole on the small-diameter hole side is larger than the outer diameter dimension of the threaded portion of the drill screw. An annular flat surface portion connected to the inner surface of the diameter hole is provided, and the inner surface of the small diameter hole and the inner surface of the large diameter hole are connected via the flat surface portion.
Moreover, in 7th invention, in the joining structure of the steel materials in any one of 1st invention-6th invention,
The head of the drill screw is accommodated in the large-diameter hole.
In the steel material joining method according to the eighth aspect of the present invention, the shavings shaved by the drill screw are discharged from the large-diameter hole to the outside of the steel material to obtain the steel material joint structure according to the first to seventh aspects of the invention. However, it is characterized by joining steel materials.
In the steel material joining method of the ninth invention, when the steel material joining structure of any of the first invention, the second invention, and the fourth invention to the seventh invention is used, the drill screw is first formed by the inner surface of the small diameter hole. The outer surface of the drill blade is guided so that the center axis of the small diameter hole matches the center axis of the tip hole, and the steel material is joined by the drill screw while preventing eccentricity of the steel material and the drill screw. To do.
Moreover, in the joining method of the steel materials of the tenth invention, in setting the steel material joining structure of any of the first invention, the third invention, and the fourth invention to the seventh invention, first, on the axial end face of the small diameter hole, It is characterized in that the drill screw is screwed in while preventing the eccentricity of the drill screw by contacting the drill blade tip inclined surface of the drill screw and guiding so that the axis of the drill screw is aligned with the center axis of the small diameter hole.
Further, in the steel structure building of the eleventh invention, the steel material joining structure according to any one of the first to seventh inventions is a steel-member column-to-beam joint, a column-to-column or a beam-to-beam joint. It is used for a joint part of a steel member such as a joint part or a joint part of a beam and a small beam.

第1発明によると、ドリルねじの頭部側に位置して接合される鋼材に設けられる先孔が、ドリルねじのねじ軸部よりも外径寸法が大きく、かつドリルねじ頭部を嵌設する大径孔と、前記大径孔に接続する小径孔とにより構成したので、ドリルねじのドリル刃またはねじ部により切削した削りかすを、前記の大径孔から積極的に鋼材の外側に排出することができるため、削りかすを排出された大径孔の内周面にドリルねじの頭部側外周面を確実に密着した状態で嵌設することができ、ドリルねじ頭部と大径孔の支圧面積を大きくして支圧耐力を向上させて、ドリルねじにより鋼材相互を接合できる。
また、先孔に小径孔が設けられているので、小径孔によりドリルねじにおけるドリル刃をガイドすることができ、先孔の中心軸線とドリルねじの中心軸線とを合致させた、正確な接合構造とすることができる。
また、先孔における小径孔のみに、ドリルねじのねじ軸部により雌ねじがタッピングされて設けられた接合構造とされているので、鋼材相互の接合を確実にすることができる。
第2発明によると、前記第1発明の効果に加えて、先孔における小径孔をドリルねじ先端のドリル刃の外径寸法よりも大きくしたので、ドリル刃の側面を小径孔によりガイドしながらドリルねじをガイドすることができると共に、前記のドリルねじにおけるねじ部により小径孔内周面側をタッピングすることができ、接合される鋼材の両方にねじを刻設して強固な接合構造とすることができる。
第3発明によると、前記第1発明の効果に加えて、小径孔が、ドリルねじ先端のドリル刃の外径寸法より小さくされているので、ドリル刃の先端側の傾斜面を小径孔の内周縁部に当接させながら押し付けることで、ドリルねじの中心軸線を小径孔の中心線に合わせるようにガイドすることができ、またその状態で、小径孔をドリル刃により切削すると共にドリルねじ部によりタッピングして接合されている接合構造となるので、ドリルねじの中心軸線と小径孔の中心軸線との合致精度の高い接合構造となっている。
第4発明によると、小径孔の先端部の傾斜面によって、ドリルねじの先端部をガイドして、ドリルねじの中心軸線を小径孔の中心軸線に合致するようにガイドさせることができ、ドリルねじを正確な位置に配置した接合構造とすることができる。
第5発明によると、大径孔内側の傾斜面によって、ドリルねじの先端部をガイドして、小径孔側にガイドすることができ、また、ドリルねじの中心軸線を大径孔の中心軸線に合致するようにガイドさせることができ、ドリルねじを正確な位置に配置して接合することができる。さらに、ドリルねじの頭部を嵌設した状態では、ドリルねじのねじ軸部の場合のみに比べて、ドリルねじ頭部と大径孔の支圧面積を大きくすることができ、支圧耐力を向上させることができる。
第6発明によると、大径孔内面と小径孔とが環状の平坦面部を介して接続されているので、ドリルねじにおけるねじ軸部が、大径孔側の内周面に干渉するのを防止することができる。
第7発明によると、大径孔にドリルねじの頭部側が収容されているので、鋼材の表面側にドリルねじの頭部による凸部が生じないので、表面仕上げ材を設ける場合に、ドリルねじ頭部を収容する凹部を設ける必要がなく、表面仕上げ材の形状を単純な形状とすることができ、表面仕上げ材の内側面を鋼材に確実に当接させて配置することができる。
第8発明によると、ドリルねじにより削られた削りかすを、ドリルねじにより大径孔から鋼材の外側に排出しながら鋼材を接合するので、大径孔内に削りかすが残留するのを防止することができ、そのため確実にドリルねじ頭部を大径孔に密着状態で嵌設することができる。
第9発明によると、小径孔の内面によりドリルねじのドリル刃外側面をガイドして、小径孔の中心軸線と先孔の中心軸線を合致させるようにすると共に、鋼材とドリルねじの偏心を防止しながらドリルねじにより鋼材を接合するので、ドリルねじを鋼材に対して所定の正確な位置で正確な姿勢で接合することができる。
第10発明によると、小径孔の軸方向端面に、ドリルねじのドリル刃先端傾斜面を当接して、小径孔の中心軸線とドリルねじの軸線を合致させるようにガイドしてドリルねじの偏心を防止するようにしたので、ドリルねじを正確な位置で接合することができると共に鋼材に対して正確な姿勢でドリルねじによりタッピングして接合することができる。そのため、ドリルねじの頭部を、先孔における大径孔に確実に嵌設して、大径孔内周面に頭部外周面を面接触状態で嵌合することができ、ドリルねじと鋼材の支圧となる投影面積を大きくして、支圧耐力を向上させることができる。
第11発明によると、鉄骨部材における鋼材相互のドリルねじによる接合部の剛性が高く、削りかすが排出され、しかも正確な位置にドリルねじが接合されている接合部支圧耐力の高い接合構造の構造物とすることができる。
According to the first invention, the tip hole provided in the steel material to be joined located on the head side of the drill screw has a larger outer diameter than the screw shaft portion of the drill screw and fits the drill screw head. Since it is composed of a large-diameter hole and a small-diameter hole connected to the large-diameter hole, the shavings cut by the drill blade or screw portion of the drill screw are positively discharged from the large-diameter hole to the outside of the steel material. Therefore, it is possible to fit the drill screw head side outer peripheral surface securely in close contact with the inner peripheral surface of the large-diameter hole from which the shavings are discharged. The bearing area can be increased to improve bearing strength, and steel materials can be joined together using a drill screw.
In addition, since a small-diameter hole is provided in the tip hole, the drill blade in the drill screw can be guided by the small-diameter hole, and an accurate joining structure that matches the center axis of the tip hole and the center axis of the drill screw. It can be.
Moreover, since it is set as the joining structure by which the internal thread was tapped by the screw shaft part of the drill screw only in the small diameter hole in the front hole, the joining of steel materials can be ensured.
According to the second invention, in addition to the effect of the first invention, the small diameter hole in the tip hole is made larger than the outer diameter of the drill blade at the tip of the drill screw, so that the drill is performed while guiding the side surface of the drill blade with the small diameter hole. The screw can be guided, and the inner peripheral surface side of the small-diameter hole can be tapped by the screw portion of the drill screw, and the screw is engraved on both of the steel materials to be joined to form a strong joining structure. Can do.
According to the third invention, in addition to the effect of the first invention, the small-diameter hole is made smaller than the outer diameter dimension of the drill blade at the tip of the drill screw. By pressing while making contact with the peripheral edge, it is possible to guide the center axis of the drill screw so that it matches the center line of the small-diameter hole, and in that state, the small-diameter hole is cut with the drill blade and the drill screw portion. Since the joining structure is joined by tapping, the joining structure has a high matching accuracy between the center axis of the drill screw and the center axis of the small-diameter hole.
According to the fourth invention, the tip of the drill screw can be guided by the inclined surface of the tip of the small-diameter hole, and the center axis of the drill screw can be guided so as to match the center axis of the small-diameter hole. It can be set as the joining structure arrange | positioned in the exact position.
According to the fifth invention, the tip end portion of the drill screw can be guided to the small diameter hole side by the inclined surface inside the large diameter hole, and the center axis of the drill screw can be changed to the center axis of the large diameter hole. It can be guided to match, and the drill screw can be placed in the correct position and joined. Furthermore, in the state where the head of the drill screw is fitted, the bearing area of the drill screw head and the large-diameter hole can be increased compared to the case of the screw shaft portion of the drill screw. Can be improved.
According to the sixth invention, the inner surface of the large-diameter hole and the small-diameter hole are connected via the annular flat surface portion, so that the screw shaft portion in the drill screw is prevented from interfering with the inner peripheral surface on the large-diameter hole side. can do.
According to the seventh invention, since the head portion of the drill screw is accommodated in the large-diameter hole, the convex portion due to the head portion of the drill screw does not occur on the surface side of the steel material. There is no need to provide a recess for accommodating the head, the shape of the surface finishing material can be made simple, and the inner surface of the surface finishing material can be reliably brought into contact with the steel material.
According to the eighth invention, since the steel material is joined while discharging the shavings shaved by the drill screw from the large diameter hole to the outside of the steel material by the drill screw, it is possible to prevent the shavings from remaining in the large diameter hole. Therefore, the drill screw head can be securely fitted in the large-diameter hole.
According to the ninth invention, the drill blade outer surface of the drill screw is guided by the inner surface of the small-diameter hole so that the center axis of the small-diameter hole and the center axis of the tip hole coincide with each other, and the eccentricity of the steel material and the drill screw is prevented. However, since the steel material is joined by the drill screw, the drill screw can be joined to the steel material in a precise posture at a predetermined precise position.
According to the tenth invention, the drill blade tip inclined surface of the drill screw is brought into contact with the axial end surface of the small-diameter hole, and the eccentric axis of the drill screw is guided by making the center axis of the small-diameter hole coincide with the axis of the drill screw. Therefore, the drill screw can be joined at an accurate position, and at the same time, the drill screw can be tapped and joined to the steel material with an accurate posture. Therefore, the head of the drill screw can be securely fitted into the large-diameter hole in the tip hole, and the outer peripheral surface of the head can be fitted to the inner peripheral surface of the large-diameter hole in a surface contact state. The bearing area can be increased to increase the bearing strength.
According to the eleventh aspect of the present invention, there is provided a joint structure having a high joint bearing bearing strength in which the rigidity of the joint portion of the steel members by the drill screw between the steel members is high, the shavings are discharged, and the drill screw is joined at an accurate position. It can be a thing.

次に、本発明を図示の実施形態に基づいて詳細に説明する。     Next, the present invention will be described in detail based on the illustrated embodiment.

図1(a)および図2は本発明の第1実施形態の鋼材の接合構造を示すものであって、ドリルねじ1の頭部側に位置して接合される鋼材における鋼板11に先孔13が設けられ、その先孔13は、深さ寸法を大きくした截頭円錐状の大径孔13aと小径孔13fとから形成されている。   FIG. 1A and FIG. 2 show a steel material joining structure according to a first embodiment of the present invention, in which a leading hole 13 is formed in a steel plate 11 in a steel material to be joined located on the head side of a drill screw 1. The tip hole 13 is formed by a frustoconical large-diameter hole 13a and a small-diameter hole 13f having a large depth.

前記の各鋼材の板厚寸法は、少なくとも板厚2.3mmを下回らない板厚寸法の鋼材とされ、通常は、2.3mm以上〜6mm程度の鋼板相互の重合部、またはドリルねじ1の頭部側またはドリルねじ1の先端側に位置して接合される鋼材の板厚寸法が、例えば、16mm〜18mm程度またはこれを越える板厚寸法の場合にも可能な、ドリルねじを用いた接合構造および接合構造に適用することができる。   The thickness of each steel material is a steel material having a thickness that is not less than at least 2.3 mm, and is usually a superposed portion of steel plates of 2.3 mm to 6 mm, or the head side of the drill screw 1. Alternatively, a joining structure and joining using a drill screw that is possible even when the thickness of the steel material to be joined located on the tip side of the drill screw 1 is about 16 to 18 mm or more. Can be applied to the structure.

前記の截頭円錐状の大径孔13aの形状は、小径孔13fに向って漸次内径が小さくなるように傾斜した内面とされ、前記大径孔13aにおける小径部13jは、ドリルねじ1におけるねじ部2の外径寸法Dよりも僅かに大きな寸法とされ、その小径部に接続する円環状底部37が設けられている。円環状底部37の外径寸法は、ドリルねじ1におけるドリルねじ部3の外径寸法Dと同じ寸法か、僅かに大きい寸法とされ、円環状底部37にドリルねじ1におけるドリルねじ部3によりタッピング可能にされ、また、截頭円錐状の大径孔13a内周面にドリルねじ1のドリルねじ部3が干渉しないようにされている。   The frustoconical large-diameter hole 13a has an inner surface inclined so that the inner diameter gradually decreases toward the small-diameter hole 13f, and the small-diameter portion 13j in the large-diameter hole 13a is a screw in the drill screw 1. An annular bottom portion 37 that is slightly larger than the outer diameter D of the portion 2 and is connected to the small diameter portion is provided. The outer diameter dimension of the annular bottom portion 37 is the same as or slightly larger than the outer diameter dimension D of the drill screw portion 3 in the drill screw 1, and is tapped on the annular bottom portion 37 by the drill screw portion 3 in the drill screw 1. In addition, the drill screw portion 3 of the drill screw 1 does not interfere with the inner peripheral surface of the large-diameter hole 13a having a truncated cone shape.

前記の截頭円錐状の大径孔13aの内面形状は、ドリルねじ1の頭部5を嵌設して収容可能な大きさにされ、したがって、截頭円錐状の大径孔13aの深さ寸法は、ドリルねじ1における頭部5の高さ寸法と同じ寸法か、僅かに大きい寸法とされている。また、ドリルねじ1の頭部5には、六角溝(図示の場合)あるいは十字状等の回動工具係合用溝からなる回動工具係合部6が設けられている。   The shape of the inner surface of the frustoconical large-diameter hole 13a is sized so that the head 5 of the drill screw 1 can be fitted and accommodated, and therefore, the depth of the frustoconical large-diameter hole 13a. The dimensions are the same as or slightly larger than the height of the head 5 in the drill screw 1. Further, the head 5 of the drill screw 1 is provided with a rotating tool engaging portion 6 including a rotating tool engaging groove such as a hexagonal groove (in the case of illustration) or a cross shape.

前記の円環状底部37に接続する小径孔13fの内径寸法D3は、ドリルねじ1におけるドリル刃10の外径寸法D1と同じ寸法か、若しくは僅かに大きい内径寸法とされている。   The inner diameter D3 of the small diameter hole 13f connected to the annular bottom portion 37 is the same as or slightly larger than the outer diameter D1 of the drill blade 10 in the drill screw 1.

前記のように先孔13の形状は、截頭円錐状の形状を基本形態とするのが好ましい。このように截頭円錐状とすることにより、ドリルねじ1の接合後の状態では、鋼材(鋼板)11における大径孔13の内周面に、ドリルねじ1における頭部5外周面が全周に渡って面接触状態で密着できるようになるためである。そのため、大径孔13aにおけるドリルねじ1頭部側の内径を奥側の内径よりも大きい内径とするのが好ましが、後記の実施形態のように、大径孔13におけるドリルねじ1の頭部側の内径と奥側の内径を同じ径としてもよい。また、ドリルねじ1の頭部5の形状は、先孔13における大径孔13a内周面の形状と一致させるのが好ましい。   As described above, the shape of the leading hole 13 is preferably a truncated cone shape. By making the truncated cone shape in this way, in the state after the drill screw 1 is joined, the outer peripheral surface of the head 5 of the drill screw 1 is entirely around the inner peripheral surface of the large-diameter hole 13 in the steel material (steel plate) 11. This is because it can come into close contact in a surface contact state. Therefore, it is preferable to set the inner diameter of the drill screw 1 head side in the large-diameter hole 13a to an inner diameter larger than the inner diameter of the inner side, but the head of the drill screw 1 in the large-diameter hole 13 as in the embodiment described later. The inner diameter on the part side and the inner diameter on the back side may be the same. The shape of the head 5 of the drill screw 1 is preferably matched with the shape of the inner peripheral surface of the large-diameter hole 13 a in the tip hole 13.

図1(b)に示す形態は、ドリルねじ1の先端側に位置して接合される鋼材11に小径先孔38を設けてもよいことを示すための説明図であって、図示の形態では、ドリルねじ1におけるドリル刃10の外径寸法D1よりも僅かに小さい寸法で、鋼材12を貫通した小径先孔38が設けられている。前記の小径先孔38は必要に応じ設ければよい。   The form shown in FIG. 1B is an explanatory diagram for showing that a small diameter tip hole 38 may be provided in the steel material 11 that is positioned and joined on the tip side of the drill screw 1. A small-diameter leading hole 38 that is slightly smaller than the outer diameter D1 of the drill blade 10 in the drill screw 1 and penetrates the steel material 12 is provided. The small diameter tip hole 38 may be provided as necessary.

ここで、前記の鋼材の接合構造において使用するドリルねじ1の一形態について、図1を参照しながら説明する。   Here, one form of the drill screw 1 used in the steel material joining structure will be described with reference to FIG.

図示のドリルねじ1は、ドリル部2とドリルねじ部3とを有する脚部4と、截頭円錐状の頭部5と、その截頭円錐状の頭部5に、横断面六角形状の凹溝からなる回動工具係合部6を備えている。   The illustrated drill screw 1 includes a leg portion 4 having a drill portion 2 and a drill screw portion 3, a frustoconical head portion 5, and a frustoconical head portion 5 having a hexagonal concave cross section. A rotating tool engaging portion 6 comprising a groove is provided.

また、前記ドリル部2の先端には、対称に傾斜したドリル刃先端部7が設けられ、ドリル刃先端部7からドリルねじ部3のねじ山8に渡り、重合されて接合される各鋼材の合計厚さ寸法以上の長さの傾斜ガイド溝9が、脚部4の外周上を軸方向に傾斜して設けられて、切り粉を案内排出するようにされている。前記の傾斜ガイド溝9は必要に応じ設ければよい。   In addition, a symmetrically inclined drill blade tip 7 is provided at the tip of the drill portion 2, and is superposed over the thread 8 of the drill screw portion 3 from the drill blade tip 7 and is superposed and joined. An inclined guide groove 9 having a length equal to or greater than the total thickness dimension is provided on the outer periphery of the leg portion 4 so as to be inclined in the axial direction so as to guide and discharge the chips. The inclined guide groove 9 may be provided as necessary.

また、ドリルねじの製造加工時に、脱水素処理させたドリルねじ1は、水素除去不充分によるドリルねじ1のねじ頭部のねじ込み作業後に破断される所謂、首飛び現象が発生しないドリルねじ1であるので、接合金具として信頼性の高いドリルねじ1により鉄骨部材を接合した接合構造の鉄骨造建築物を構築することができる。   In addition, the drill screw 1 that has been dehydrogenated during the manufacturing process of the drill screw is a drill screw 1 that is broken after a screwing operation of the screw head of the drill screw 1 due to insufficient hydrogen removal, that is, the so-called neck skip phenomenon does not occur. Therefore, it is possible to construct a steel structure having a joint structure in which steel members are joined by the highly reliable drill screw 1 as a joint fitting.

ドリル部2の外径寸法D1は、ドリルねじ部3の谷の径dよりも大きく、かつドリルねじ部3の山の外径Dよりも小さくされ、ドリル部2の長さ寸法L1およびねじ部3の長さ寸法Lは、重合されて接合される鋼材相互の合計の板厚寸法T(t1+t2)以上とされ、頭部に回動工具係合部6が形成され、電動式レンチ等により回動可能に構成されている。   The outer diameter D1 of the drill part 2 is larger than the diameter d of the valley of the drill screw part 3 and smaller than the outer diameter D of the peak of the drill screw part 3, and the length dimension L1 of the drill part 2 and the screw part The length L of 3 is set to be equal to or greater than the total thickness T (t1 + t2) of the steel materials to be polymerized and joined, the rotating tool engaging portion 6 is formed on the head, an electric wrench or the like It is comprised so that rotation is possible.

ドリルねじ1の先端には、当該ドリルねじ1のねじ部3の谷の径dと同じ寸法か、または僅かに大きい外径で、かつ、当該ドリルねじ1のねじ部3の山の径Dより小さい外径D1のドリル刃10を有している。   The tip of the drill screw 1 has an outer diameter that is the same as or slightly larger than the diameter d of the valley of the threaded portion 3 of the drill screw 1 and a diameter D of the threaded portion of the threaded portion 3 of the drill screw 1. A drill blade 10 having a small outer diameter D1 is provided.

ドリルねじ1の呼び径は、例えば、6mm〜8mmあるいは8mmを越える寸法とされ、少なくとも接合される一方の部材の板厚が2.3mm以上の鋼材を一方に含む鋼材11,12同士が重合された鋼材重合部に適用可能にされている。   The nominal diameter of the drill screw 1 is, for example, 6 mm to 8 mm or more than 8 mm, and at least one of the steel materials 11 and 12 including a steel material having a plate thickness of 2.3 mm or more in one member to be joined is polymerized. It is made applicable to the steel material superposition part.

また、ドリルねじ1の表面硬さおよび心部硬さは、JISB1055またはJISB1059の規定に従うものとする。例えば、JISB1059の3.2.1(表面硬さ)項の規定および3.2.2(心部硬さ)項の規定に準じて、JISB1059の11.1.1の試験を行った時に、530HV0.3以上の表面硬さとされ、320HV10〜400HV10の心部硬さとされている。前記のドリルねじ1を使用して接合される部材(鋼材)の材質として軟鋼(400MPa鋼程度以下)の部材であると望ましい。   Further, the surface hardness and the core hardness of the drill screw 1 shall comply with the provisions of JISB1055 or JISB1059. For example, when the test of 11.1.1 of JISB1059 was conducted in accordance with the provisions of 3.2.1 (surface hardness) and 3.2.2 (heart hardness) of JISB1059, The surface hardness is 530HV0.3 or more, and the core hardness is 320HV10 to 400HV10. The material of the member (steel material) to be joined using the drill screw 1 is preferably a member of mild steel (about 400 MPa steel or less).

前記の接合構造についてさらに説明すると、、前記のような截頭円錐状の大径孔13aおよび小径孔13fを備えた先孔13を有する鋼材11を接合する場合には、図2(a)に示すように、ドリルねじ1におけるドリル刃10の外側面部分が、小径孔13fの内周面にガイドされて、ドリルねじ1の中心軸線Cと小径孔13fの中心軸線C1がほぼ合致し、この状態でドリルねじ1の刃先側に位置して接合される鋼材12に、ドリルねじ1におけるドリル刃10により、貫通孔13gが空けられた後、ドリルねじ1の頭部5側に位置して接合される鋼板11およびドリルねじ1の刃先側に位置して接合される鋼板12に、ドリルねじ1におけるドリルねじ部3により雌ねじがタッピングされて接合され、截頭円錐状の大径孔13a内周面にドリルねじ1の頭部5の截頭円錐状外周面が面接触状態で接合されるため、強固に鋼板11,12相互を接合することができる。   The joining structure will be further described. When joining the steel material 11 having the tip hole 13 having the large-diameter hole 13a and the small-diameter hole 13f having the truncated cone shape as described above, FIG. As shown, the outer surface portion of the drill blade 10 in the drill screw 1 is guided by the inner peripheral surface of the small diameter hole 13f, so that the center axis C of the drill screw 1 and the center axis C1 of the small diameter hole 13f substantially coincide with each other. After the through hole 13g is drilled by the drill blade 10 in the drill screw 1 to the steel material 12 that is positioned and joined on the cutting edge side of the drill screw 1 in a state, the steel material 12 is located on the head 5 side of the drill screw 1 and joined. A female screw is tapped by a drill screw portion 3 of the drill screw 1 and joined to a steel plate 11 and a steel plate 12 to be joined on the cutting edge side of the drill screw 1 and the inner periphery of the frustoconical large-diameter hole 13a. On the face Since the frustoconical outer peripheral surface of the head portion 5 of the drill screw 1 is joined in surface contact, it can be firmly bonded to the steel plate 11 and 12 each other.

また、この場合に、前記の大径孔13aが、ドリル刃10の外径寸法よりも大きいので、ドリルねじ1を回動工具により回転させながらドリル刃10により他方の鋼板12に貫通孔を設けるべく切削する時に、ドリルねじ1の回転により大径孔13a側から鋼板12の削りかすを積極的に排出することができる。   In this case, since the large-diameter hole 13a is larger than the outer diameter dimension of the drill blade 10, a through-hole is provided in the other steel plate 12 by the drill blade 10 while rotating the drill screw 1 with a rotating tool. When cutting as much as possible, the shavings of the steel plate 12 can be positively discharged from the large-diameter hole 13a side by the rotation of the drill screw 1.

また、前記のように削りかすを積極的に鋼板11,12の外側に排出する点を考慮すると、大径孔13aの形状は、截頭円錐状の内周面であるほうが、円筒状の内周面である場合に比べて、傾斜した内周面により、削りかすが内周面に衝突した場合に、積極的に削りかすを拡径側の傾斜面側にガイドして鋼板11,12の外側に排出することができる。   Further, considering that the shavings are positively discharged to the outside of the steel plates 11 and 12 as described above, the shape of the large-diameter hole 13a is a cylindrical conical inner peripheral surface. Compared to the case of the peripheral surface, when the shavings collide with the inner peripheral surface due to the inclined inner peripheral surface, the outer surface of the steel plates 11 and 12 is actively guided to the inclined surface side on the enlarged diameter side. Can be discharged.

図3(a)(b)には、ドリルねじ1におけるドリル刃10先端部と、前記小径孔13fとの関係を示す説明図であって、小径孔13fの内径寸法D3をドリル刃10の外径寸法D1よりも僅かに大きい寸法とし、ドリル刃先端の傾斜部の高さ寸法aよりも、小径孔13fの軸方向の深さ寸法bを長くすることにより、ドリルねじ先端が鋼板12に接触する時に、小径孔13f内にドリルねじ1におけるドリル刃10本体部分の一部を確実に位置させて、ドリルねじ1の軸心(中心軸線)Cと小径孔13fの中心軸線C1とを確実に一致させることができる。   3A and 3B are explanatory views showing the relationship between the tip of the drill blade 10 in the drill screw 1 and the small-diameter hole 13f, and the inner diameter D3 of the small-diameter hole 13f is the outer diameter of the drill blade 10. The tip of the drill screw is brought into contact with the steel plate 12 by making the dimension slightly larger than the diameter dimension D1 and making the depth dimension b in the axial direction of the small diameter hole 13f longer than the height dimension a of the inclined portion at the tip of the drill blade. When this is done, a part of the body of the drill blade 10 in the drill screw 1 is surely positioned in the small-diameter hole 13f, so that the axial center (center axis) C of the drill screw 1 and the central axis C1 of the small-diameter hole 13f are ensured. Can be matched.

また、図3(b)に示すように、前記高さ寸法aが小径孔13fの深さ寸法よりも長い場合には、ドリルねじ先端が鋼板12に接触する時に、小径孔13fの内径寸法d1をドリルねじ1におけるドリル刃10の外径寸法D1よりも小さくすることにより、ドリル刃10の先端傾斜部7aを小径孔13fの縁部13iに係合させることにより、ドリル刃10先端部をガイドさせて、小径孔13fの中心軸線C1とドリルねじ1の中心軸線Cとを合致させることができる。   Further, as shown in FIG. 3B, when the height dimension a is longer than the depth dimension of the small diameter hole 13f, the inner diameter dimension d1 of the small diameter hole 13f when the tip of the drill screw contacts the steel plate 12. Is made smaller than the outer diameter D1 of the drill blade 10 in the drill screw 1, and the tip inclined portion 7a of the drill blade 10 is engaged with the edge portion 13i of the small diameter hole 13f, thereby guiding the tip portion of the drill blade 10. Thus, the central axis C1 of the small diameter hole 13f and the central axis C of the drill screw 1 can be matched.

図4には、大径孔13fの各種形態と、ドリルねじ1の頭部形状の各種形態との組み合わせ形態を示すものであって、図4(a)の場合は、前記実施形態における円環状底部37を設けないで、直接截頭円錐状の大径孔13bに小径孔13fを接続させるように先孔13を設けた形態で、ドリルねじ1の頭部5を、前記ほぼ截頭円錐状の大径孔13bと同じ大きさのほぼ截頭円錐状の頭部5bとするか、僅かに前記截頭円錐状の大径孔13bの深さ寸法よりも短い寸法の截頭円錐状の頭部5bとした形態のドリルねじ1との組み合わせが示されているが、その他の構成は前記実施形態の場合と同様である。   FIG. 4 shows a combination form of various forms of the large-diameter hole 13f and various forms of the head shape of the drill screw 1. In the case of FIG. 4 (a), the annular shape in the above embodiment is shown. Without providing the bottom portion 37, the head 5 of the drill screw 1 has the substantially frustoconical shape in the form in which the tip hole 13 is provided so that the small diameter hole 13f is directly connected to the large diameter hole 13b having a frustoconical shape. A truncated cone-shaped head 5b having the same size as the large-diameter hole 13b, or a slightly shorter frustoconical head having a depth slightly smaller than the depth of the large-diameter hole 13b. Although the combination with the drill screw 1 of the form made into the part 5b is shown, the other structure is the same as that of the case of the said embodiment.

図4(b)に示す形態では、大径孔13をほぼ截頭半球状の大径孔13cとし、ドリルねじ1の頭部5を、前記截頭半球状の大径孔13cと同じ大きさのほぼ截頭半球状の頭部5bとするか、僅かに前記截頭半球状の大径孔13cの深さ寸法よりも短い寸法の截頭半球状の頭部5cとした形態のドリルねじ1との組み合わせ形態が示されている。   In the form shown in FIG. 4 (b), the large-diameter hole 13 is made into a substantially truncated hemispherical large-diameter hole 13c, and the head 5 of the drill screw 1 has the same size as the truncated hemispherical large-diameter hole 13c. The drill screw 1 in the form of a truncated hemispherical head 5b or a truncated hemispherical head 5c having a dimension slightly shorter than the depth of the large diameter hole 13c of the truncated hemisphere. The combination form is shown.

図4(c)に示す形態では、大径孔13をほぼ短円柱状の大径孔13dとし、ドリルねじ1の頭部5を、前記ほぼ短円柱状の大径孔13dと同じ大きさの短円柱状の頭部5dとするか、僅かに前記短円柱状の大径孔13dの深さ寸法よりも短い寸法の短円柱状の頭部5dとした形態のドリルねじ1との組み合わせ形態が示されている。   In the form shown in FIG. 4C, the large-diameter hole 13 is a substantially short cylindrical large diameter hole 13d, and the head 5 of the drill screw 1 has the same size as the substantially short cylindrical large-diameter hole 13d. A combination form with the drill screw 1 in the form of a short cylindrical head 5d or a short cylindrical head 5d having a dimension slightly shorter than the depth of the short cylindrical large diameter hole 13d. It is shown.

図4(d)に示す形態では、図4(a)に示す形態のさらに変形形態で、この場合は、截頭円錐状の大径孔13aの内周面を内側に向って凸の断面円弧状に湾曲させた傾斜面とした截頭円錐状湾曲傾斜面を備えた大径孔13eとした形態で、また、ドリルねじ1の頭部5形状を、前記の截頭円錐状湾曲傾斜面を備えた大径孔13fに合せて、截頭円錐状で、頭部側周面が中心側に向って凹状に湾曲させた傾斜面を有する頭部側周面とした截頭円錐状湾曲傾斜側周面を備えた頭部5eとした形態のドリルねじ1との組み合わせ形態を示したものである。いずれの形態の場合も、先孔13(13a〜13f)にドリルねじ1の頭部5(5a〜5f)の側周面が、嵌合して密着することにより、鋼板側とドリルねじ1頭部5とが面接触して係合する投影面積(支圧面積)を大きくしている。また、鋼板とドリルねじが接合されるとき、鋼板の孔(、すなわち、先孔部分とドリル刃10により開けられる孔の両方)の内側面とドリルねじが支圧により応力が有効に伝達できるようにされており、また、ドリルねじ1によりタッピングされる、鋼材11における円環状底部37の部分および鋼材12側の雌ねじ孔内面とドリルねじ1の(雄)ねじ部3の外側面が、支圧により応力が有効に伝達できるようにされている。
また、本発明を実施する場合、図14に示すように、小径孔13fにおける大径孔13よりの端部に、大径孔13に向って漸次拡径するように広がる截頭円錐状の傾斜面13kが設けられていると、ドリルねじ1の先端部が前記截頭円錐状の傾斜面13kに係合した場合に、前記截頭円錐状の傾斜面13kによって、ドリルねじ1の先端部を、スムーズに傾斜面13kに沿ってガイドでき、また、ドリルねじ1の中心軸線Cを小径孔13fの中心軸線C1に合致するようにガイドさせることができ、ドリルねじ1を正確な位置に配置した接合構造とすることができる。
The form shown in FIG. 4D is a further modified form of the form shown in FIG. 4A. In this case, a cross-sectional circle having a convex shape facing the inner peripheral surface of the frustoconical large-diameter hole 13a inward. In the form of a large-diameter hole 13e having a frustoconical curved inclined surface that is curved in an arc shape, the shape of the head 5 of the drill screw 1 is the same as the truncated conical curved inclined surface. In accordance with the large-diameter hole 13f provided, a truncated cone-shaped curved inclined side having a truncated cone shape and a head-side circumferential surface having an inclined surface in which the head-side circumferential surface is curved concavely toward the center side The combination form with the drill screw 1 of the form made into the head 5e provided with the surrounding surface is shown. In any case, the side peripheral surface of the head 5 (5a to 5f) of the drill screw 1 is fitted and closely attached to the leading hole 13 (13a to 13f), so that the steel plate side and one drill screw are attached. The projected area (bearing area) with which the part 5 is brought into surface contact and engaged is increased. Further, when the steel plate and the drill screw are joined, the inner surface of the hole of the steel plate (that is, both the hole of the leading hole and the drill blade 10) and the drill screw can transmit stress effectively by supporting pressure. The portion of the annular bottom portion 37 in the steel material 11 and the inner surface of the female screw hole on the steel material 12 side and the outer surface of the (male) screw portion 3 of the drill screw 1 are tapped by the drill screw 1. Thus, stress can be effectively transmitted.
Further, when the present invention is carried out, as shown in FIG. 14, the frustoconical slope that gradually expands toward the large-diameter hole 13 at the end of the small-diameter hole 13 f from the large-diameter hole 13. When the surface 13k is provided, when the tip of the drill screw 1 is engaged with the frustoconical inclined surface 13k, the tip of the drill screw 1 is moved by the frustoconical inclined surface 13k. The drill screw 1 can be guided along the inclined surface 13k smoothly, and the center axis C of the drill screw 1 can be guided so as to coincide with the center axis C1 of the small-diameter hole 13f, and the drill screw 1 is arranged at an accurate position. It can be set as a junction structure.

前記のように、本発明においては、先孔13の内側形状に密着して嵌合する形態のドリルねじ1の頭部形状とし、そのようなドリルねじ1の頭部5を大径孔13に合致させるためにも、先孔13の中心軸線とドリルねじ1の中心軸線が合致していることが必要になる。   As described above, in the present invention, the shape of the head of the drill screw 1 in a form that fits closely to the inner shape of the tip hole 13 is set, and the head 5 of such a drill screw 1 is formed into the large-diameter hole 13. In order to match, it is necessary that the center axis of the leading hole 13 and the center axis of the drill screw 1 match.

次に、ドリルねじ1による接合構造の場合についての支圧耐力について説明する。図5にハッチングを付して示すように、ドリルねじ1の頭部側に位置して接合される鋼材における鋼板11とドリルねじ1との支圧面積に着目してみると、図5(a)に示す従来のドリルねじ部3のみを鋼板11に配置する形態に比べて、図5(b)(c)に示すように、ドリルねじ1の頭部5を鋼板11内に位置するように嵌合する形態では、ドリルねじ1と鋼板11の支圧となる投影面積を大きくして、支圧耐力を向上させることができる。
また、前記のように支圧耐力を向上させる技術観点からして、図1および図4(a)〜(d)に示す形態では、大径孔13(13a〜13f)における大径側の半径を同じ寸法とした場合、(a)(b)(c)または(d)の順に、鋼板(鋼材)11とドリルねじ1頭部の支圧面積が大きくなることから、ドリルねじ1の接合部の支圧耐力を高めることできる。
Next, the bearing strength in the case of the joining structure with the drill screw 1 will be described. As shown in FIG. 5 with hatching, when attention is paid to the bearing area between the steel plate 11 and the drill screw 1 in the steel material to be joined on the head side of the drill screw 1, FIG. As shown in FIGS. 5 (b) and 5 (c), the head 5 of the drill screw 1 is positioned in the steel plate 11 as compared with the configuration in which only the conventional drill screw portion 3 shown in FIG. In the form to be fitted, the projected area serving as a bearing pressure between the drill screw 1 and the steel plate 11 can be increased to improve the bearing strength.
Further, from the technical viewpoint of improving the bearing bearing strength as described above, in the embodiment shown in FIGS. 1 and 4A to 4D, the radius on the large diameter side in the large diameter hole 13 (13a to 13f). Are the same dimensions, the bearing area of the steel plate (steel) 11 and the head of the drill screw 1 increases in the order of (a), (b), (c), or (d). The bearing strength of can be increased.

次に、ドリルねじ1の頭部5と表面仕上げの関係について説明すると、図6(b)に示すように、ドリルねじ1の頭部5を鋼材における鋼板11の大径孔13内に嵌設するようにすると、鋼材の表面側にドリルねじ1の頭部が収納されるために、接合すべき鋼板11の表面側に突出する部材(表面凸部)がないために仕上げ面を平滑化することができ、また、接合すべき鋼板11の表面側に、床材や壁材を配置して、これらを取り付ける場合に、ドリルねじ1頭部5による突出した凸部がある形態(図6a参照)では、凸部に合せての内側面に凸部収容用凹部36を設ける必要があったが、そのような凸部収容用凹部36を設ける必要ながいために、作業性が向上するとともに、床材または壁材35あるいは表面仕上げ材の断面欠損することを防止することができ、頭部5用の凹部36を設ける必要もなくすことができる。また、ドリルねじ1による接合部の仕上げ面を平滑化することができる。   Next, the relationship between the head 5 of the drill screw 1 and the surface finish will be described. As shown in FIG. 6B, the head 5 of the drill screw 1 is fitted into the large-diameter hole 13 of the steel plate 11 in the steel material. Then, since the head of the drill screw 1 is housed on the surface side of the steel material, the finished surface is smoothed because there is no member (surface convex portion) protruding on the surface side of the steel plate 11 to be joined. Further, when floor materials and wall materials are arranged on the surface side of the steel plate 11 to be joined and these are attached, there is a form in which there is a protruding portion projected by the head 5 of the drill screw (see FIG. 6a). ), It is necessary to provide the convex portion accommodating concave portion 36 on the inner surface in accordance with the convex portion. However, since it is not necessary to provide the convex portion accommodating concave portion 36, the workability is improved and the floor is improved. Missing cross section of wood or wall 35 or surface finish Can be prevented, it is possible to eliminate the need to provide a recess 36 for the head 5. Moreover, the finishing surface of the junction part by the drill screw 1 can be smoothed.

なお、図5(d)に示すように、鋼材における鋼板11表面側に仕上げ板等を配置する必要がない場合では、ドリルねじ1における頭部5の外側に、さらに回動工具係合部6を設けるようにしてもよい。   In addition, as shown in FIG.5 (d), when it is not necessary to arrange | position a finishing board etc. in the steel plate 11 surface side in steel materials, further on the outer side of the head 5 in the drill screw 1, the rotation tool engaging part 6 is further provided. May be provided.

図7〜図12は、図2(b)に示す形態の鋼材の接合構造を、鉄骨部材の柱と梁の接合部、柱と柱または梁と梁の接合部あるいは梁と小梁の接合部等の鉄骨部材における板状部(鋼材)を重合させて、ドリルねじ1により接合する場合の形態を示したものである。   FIGS. 7 to 12 show the steel-material joint structure shown in FIG. 2B as a steel-member column-to-beam joint, a column-to-column or beam-to-beam joint, or a beam-to-beam joint. The form in the case of superposing | stacking the plate-shaped part (steel material) in steel frame members, such as these, and joining with the drill screw 1 is shown.

図7および図8に示す形態は、直列に隣り合うH形断面の梁14,14の上フランジ17,17相互の上面に渡って上添板15が配設され、また下フランジ18,18相互の下面に渡って下添板16が配設され、さらにウェッブ19,19相互の片面に渡って、縦添板20が配設され、前記各上添板15、下添板16、および縦添板20は、梁14に対して所定の位置が保持されるように、図示を省略するが、板状部相互を圧着仮固定する把持クランプ金具(図示省略)、あるいは梁14のフランジあるいはウェッブに対して各添板15,16,17を固定する接着テープ(図示省略)などが設けられて位置固定される。   In the form shown in FIGS. 7 and 8, an upper attachment plate 15 is disposed over the upper surfaces of the upper flanges 17, 17 of the H-shaped cross-section beams 14, 14 adjacent in series, and the lower flanges 18, 18 are mutually connected. A lower attachment plate 16 is disposed over the lower surface of the web, and a longitudinal attachment plate 20 is disposed over one side of the webs 19, 19. The upper attachment plate 15, the lower attachment plate 16, and the longitudinal attachment plate Although the illustration of the plate 20 is omitted so that a predetermined position with respect to the beam 14 is maintained, a grip clamp fitting (not shown) that temporarily presses and fixes the plate-like portions to each other, or a flange or a web of the beam 14 is used. On the other hand, an adhesive tape (not shown) or the like for fixing the accessory plates 15, 16, 17 is provided to fix the position.

前記の上添板15および下添板16には、左右方向および前後方向に間隔をおいて多数の大径孔13aおよび小径孔13fからなる先孔13が設けられ、また、縦添板20には、左右方向および上下方向に間隔をおいて、大径孔13aおおよび小径孔13fからなる先孔13が設けられ、上添板15または下添板16あるいは縦添板20側からドリルねじ1が、上添板15または下添板16(あるいは縦添板20)と、H形断面の梁14におけるフランジ17(またはウェッブ19)とにねじ込まれている。   The upper plate 15 and the lower plate 16 are provided with a leading hole 13 having a large number of large-diameter holes 13a and small-diameter holes 13f at intervals in the left-right direction and the front-rear direction. Is provided with a leading hole 13 consisting of a large diameter hole 13a and a small diameter hole 13f at intervals in the left and right direction and the vertical direction, and the drill screw 1 from the upper accessory plate 15 or the lower accessory plate 16 or the vertical accessory plate 20 side. Are screwed into the upper plate 15 or the lower plate 16 (or the vertical plate 20) and the flange 17 (or web 19) of the beam 14 having an H-shaped cross section.

前記添板15,16,20側からドリルねじ1が、電動ドライバーあるいは電動式トルクレンチ(図示を省略した)により、フランジ17,18またはウェッブ19にねじ込まれ、ドリルねじ1および各添板15,16,20が、それぞれフランジ17,18またはウェッブ19に圧着されて一体に接合されている。   The drill screw 1 is screwed into the flanges 17 and 18 or the web 19 by an electric screwdriver or an electric torque wrench (not shown) from the side of the accessory plates 15, 16 and 20. 16 and 20 are crimped to the flanges 17 and 18 or the web 19, respectively, and joined together.

図9および図10に示す形態では、H形断面の柱21におけるフランジ22と、梁14端部の縦端板23とが、梁14側の縦端板23側からドリルねじ1により、縦端板23および柱21のフランジ22にねじ込まれて、前記縦端板23と柱21のフランジ22とが、多数のドリルねじ1により接合されている。この形態では、縦端板23は、梁14における上下のフランジ17,18より外側に突出して、上下のフランジ17,18と縦端板23に固定された補強リブ32により補強され、同様にドリルねじ1により接合されている。   9 and 10, the flange 22 in the column 21 having an H-shaped section and the vertical end plate 23 at the end of the beam 14 are connected to the vertical end plate 23 from the vertical end plate 23 side of the beam 14 by the drill screw 1. The vertical end plate 23 and the flange 22 of the column 21 are joined by a number of drill screws 1 by being screwed into the plate 22 and the flange 22 of the column 21. In this embodiment, the vertical end plate 23 protrudes outward from the upper and lower flanges 17 and 18 of the beam 14 and is reinforced by the reinforcing ribs 32 fixed to the upper and lower flanges 17 and 18 and the vertical end plate 23. They are joined by screws 1.

図11に示す形態では、予め先孔13が設けられたガセットプレート25が柱21側に固定され、そのガセットプレート25と、梁14のウェッブ19とが重合されて、ガセットプレート25側から梁14のウェッブ19にドリルねじ1がねじ込まれて、ガセットプレート25と、梁14のウェッブ19とが複数(4つ)のドリルねじ1により接合され、同様に、ガセットプレート25と、予め先孔13が設けられたL形鋼からなるブレース26の縦部分26aとが、ブレース26側からガセットプレート25に複数(4つ)のドリルねじ1がねじ込まれて接合されている。   In the form shown in FIG. 11, a gusset plate 25 provided with a leading hole 13 in advance is fixed to the column 21 side, and the gusset plate 25 and the web 19 of the beam 14 are overlapped to form the beam 14 from the gusset plate 25 side. The drill screw 1 is screwed into the web 19 and the gusset plate 25 and the web 19 of the beam 14 are joined by a plurality of (four) drill screws 1. Similarly, the gusset plate 25 and the leading hole 13 are preliminarily formed. A plurality of (four) drill screws 1 are screwed and joined to the gusset plate 25 from the brace 26 side to the longitudinal portion 26a of the brace 26 made of L-shaped steel provided.

図12には、屋根骨組に用いる山形トラス28を構成する傾斜上弦材29と水平な下弦材30との接合またはこれらの間に介在されて接合される斜材31との接合部に適用した形態が示されている。前記の斜材31または傾斜上弦材29の端部に大径孔および小径孔を有する複数の先孔13が設けられている。   FIG. 12 shows a form applied to a joint between an inclined upper chord member 29 and a horizontal lower chord member 30 constituting a chevron truss 28 used for a roof frame, or a diagonal member 31 interposed and joined therebetween. It is shown. A plurality of leading holes 13 having a large-diameter hole and a small-diameter hole are provided at the end of the diagonal member 31 or the inclined upper chord member 29.

さらに説明すると、L形鋼からなる傾斜上弦材29の下端部の縦部分29aと、L形鋼からなる水平な下弦材30の端部縦部分30aとが、重合されて、傾斜上弦材29側の縦部分29a側から水平な下弦材30の縦部分30aにドリルねじ1がねじ込まれて、傾斜上弦材29の縦部分29aと水平な下弦材30の縦部分30aとが複数(4つ)のドリルねじ1により接合されている。   More specifically, the vertical portion 29a of the lower end portion of the inclined upper chord member 29 made of L-shaped steel and the end vertical portion 30a of the horizontal lower chord member 30 made of L-shaped steel are polymerized to form the inclined upper chord member 29 side. The drill screw 1 is screwed into the vertical portion 30a of the horizontal lower chord member 30 from the vertical portion 29a side, and there are a plurality (four) of vertical portions 29a of the inclined upper chord member 29 and vertical portions 30a of the horizontal lower chord member 30. Joined by a drill screw 1.

また、傾斜上弦材29における縦部分29aまたは水平な下弦材30における縦部分30aと、L形鋼からなる斜材31における縦部分31aの端部が重合されて、斜材31側から傾斜上弦材29の縦部分29aまたは水平な下弦材30における縦部分30aにドリルねじ1がねじ込まれて、傾斜上弦材29の縦部分29aに斜材31の上端部とドリルねじ1が圧着されるように接合され、また、水平な下弦材30における縦部分30aに斜材31の下端部とドリルねじ1が圧着されるように接合されている。また、母屋材33とこれを支持する支持材34の接合部も、支持材34側に設けられた大径孔および小径孔を有する先孔13側からドリルねじ1がねじ込まれて、ドリルねじ1により接合された形態が示されている。   Further, the vertical portion 29a of the inclined upper chord member 29 or the vertical portion 30a of the horizontal lower chord member 30 and the end of the vertical portion 31a of the oblique member 31 made of L-shaped steel are superposed, and the inclined upper chord member from the oblique member 31 side. The drill screw 1 is screwed into the vertical portion 29a of the vertical lower chord member 30 or the vertical portion 30a of the horizontal lower chord member 30, and the upper end portion of the diagonal member 31 and the drill screw 1 are bonded to the vertical portion 29a of the inclined upper chord member 29. Further, the lower end portion of the diagonal member 31 and the drill screw 1 are joined to the vertical portion 30a of the horizontal lower chord member 30 so as to be pressure-bonded. In addition, the drill screw 1 is also screwed from the front hole 13 side having a large diameter hole and a small diameter hole provided on the support material 34 side at the joint portion between the purlin material 33 and the support material 34 that supports the main material 33. The joined form is shown.

前記各実施形態のように、先孔を設けてドリルねじ1を使用して部材同士を接合すると、(1)ドリルねじが偏心することなく、ドリルねじを用いて部材同士を接合することができ、特別な技能を有さずとも、確実で強度の高い鉄骨造の接合構造を、簡便でかつ作業性よく容易に施工して、鋼製部材相互を接合することができる。
(2)先端にドリル刃10を加工したドリルねじ1により、重合される鋼板12に孔(貫通孔)をあけ、ねじ部3によって被接合鋼板12(または11を含む)をタッピングして接合し、一体化することで、従来のように溶接のような作業時の管理や溶接後の防錆補修が不要となり、ボルトやリベットのように部材の両側から作業する必要が無くなり、高力ボルトのように摩擦力のための表面処理を必要としないため、作業効率が向上するとともに、ガタ等を誘発するすき間が生ぜず、剛性の高い接合を構築できる。
When the members are joined using the drill screw 1 by providing a leading hole as in the above embodiments, (1) the members can be joined using the drill screw without the drill screw being eccentric. Even without special skills, it is possible to easily and easily construct a steel structure joint structure with high strength and to easily join steel members.
(2) A hole (through hole) is made in the steel plate 12 to be polymerized by the drill screw 1 with the drill blade 10 processed at the tip, and the steel plate 12 (or 11) to be joined is tapped and joined by the screw portion 3. By integrating, it becomes unnecessary to manage at the time of work such as welding and rust prevention repair after welding, and there is no need to work from both sides of the member like bolts and rivets. Thus, since the surface treatment for the frictional force is not required, the working efficiency is improved, and there is no gap for inducing backlash and the like, and a highly rigid joint can be constructed.

また、前記のような先孔を有する鋼材を使用して鋼材相互を接合すると、接合コストが安価で工期を短縮することができるため、建築施工コストの安価な建築物を構築することができる。   In addition, when steel materials having a tip hole as described above are used to join each other, the joining cost is low and the construction period can be shortened, so that a building with a low construction cost can be constructed.

本発明を実施する場合、ドリルねじ1の頭部形状としては、六角溝以外の回動工具係合部を有する形状、例えば、横断面矩形状凹溝あるいは横断面十字状溝などの回動工具係合部としてもよいが、ドリルねじ1をねじ込む時に、回転トルクが大きくなるので、ドリルねじ1体に設ける回動工具係合部6としては、六角溝または矩形状溝として電動ドライバーにより回動する場合よりも、電動式レンチにより接合するとよい。   When carrying out the present invention, the head shape of the drill screw 1 is a shape having a rotating tool engaging portion other than the hexagonal groove, for example, a rotating tool such as a rectangular concave groove or a cross-shaped cross groove. Although it is good as an engaging part, since rotational torque becomes large when screwing in the drill screw 1, the rotating tool engaging part 6 provided in the drill screw is rotated by an electric screwdriver as a hexagonal groove or a rectangular groove. It is better to join with an electric wrench than to do.

本発明を実施する場合、接合する鋼材は、板状部相互である必要があるが、円形あるいは矩形の閉鎖断面部材(鋼管柱、梁)の板状部と、これに重合される断面円弧状あるいは平板状の鋼板部材とをドリルねじ1を用いて、鋼板部材の外側(ワンサイド側)から接合する接合構造および接合方法にも適用することができる。   When carrying out the present invention, the steel materials to be joined need to be plate-like portions, but the plate-like portion of a circular or rectangular closed cross-section member (steel pipe column, beam) and the cross-sectional arc shape superposed on this plate-like portion Or it can apply also to the joining structure and joining method which join a flat steel plate member from the outer side (one side side) of a steel plate member using the drill screw 1. FIG.

また、ドリルねじ1による接合は、工場においては、各種の設備がある場合が多いので接合作業が容易であるが、現場においては、柱等の建て込まれて位置固定された部材に、他の接合すべき部材を重合してドリルねじ1により接合させるようにするのが好ましい。   In addition, the joining with the drill screw 1 is easy to join because there are many various facilities in the factory. However, in the field, other members such as pillars and the like that are fixed in position, It is preferable that the members to be joined are superposed and joined by the drill screw 1.

ドリルねじ1の頭部形状としては、表面仕上げ材35に予め凹部36等が設けられている形態においては、回動工具係合溝を有する頭部形状以外にも、大径孔に嵌設される部分から離れた位置に、六角頭部等の回動工具係合用外面を有するドリルねじ1としてもよい。   As the head shape of the drill screw 1, in the form in which the concave portion 36 and the like are provided in the surface finish 35 in advance, the drill screw 1 is fitted in a large-diameter hole in addition to the head shape having the rotating tool engaging groove. It is good also as the drill screw 1 which has the outer surface for rotating tools engagement, such as a hexagon head, in the position away from the part which is.

本発明を実施する場合、図示を省略するが、柱と胴縁支持金具との接合、胴縁と胴縁支持金具との接合、または、屋根トラスと壁上縁材とを連結金物を介して接合する場合の屋根トラスと連結金物あるいは連結金物と壁上縁材との接合その他の鋼材相互の接合にドリルねじ1を使用した接合構造としてもよい。   When carrying out the present invention, although not shown in the drawings, it is possible to join a column and a trunk edge support bracket, a junction between a trunk edge and a trunk edge support bracket, or a roof truss and a wall upper edge member via a connecting hardware. In the case of joining, a joining structure using the drill screw 1 may be used for joining the roof truss and the connecting metal or the connecting metal and the wall upper edge member or other steel materials.

前記実施形態によると、鉄骨部材における鋼材相互の接合部におけるドリルねじの設置位置が正確な位置に配置されていると共に、ドリルねじによる接合部の剛性が高く、さらにドリルねじによる接合の作業性がよく、ドリルねじの接合施工コストの安価な鉄骨造の建築物とすることができる。   According to the embodiment, the installation position of the drill screw in the joint portion between the steel members in the steel member is arranged at an accurate position, the rigidity of the joint portion by the drill screw is high, and the workability of joining by the drill screw is further improved. Well, it is possible to make a steel-framed building with a low cost for joining a drill screw.

(a)は本発明の第1実施形態の鋼材の接合構造または接合方法の形態を説明するための説明図であり、(b)は本発明の他の実施形態の鋼材の接合構造または接合方法の形態を説明するための説明図である。(A) is explanatory drawing for demonstrating the form of the joining structure or joining method of the steel materials of 1st Embodiment of this invention, (b) is the joining structure or joining method of the steel materials of other embodiment of this invention. It is explanatory drawing for demonstrating this form. (a)は本発明の第1実施形態の鋼材の接合構造または接合方法の形態を説明するための説明図であり、(b)は本発明の第1実施形態の鋼材の接合構造を説明するための説明図である。(A) is explanatory drawing for demonstrating the form of the joining structure or joining method of the steel materials of 1st Embodiment of this invention, (b) demonstrates the joining structure of the steel materials of 1st Embodiment of this invention. It is explanatory drawing for. (a)(b)(c)はドリルねじが先孔にガイドされて、ドリルねじの中心軸線が先孔の中心軸線に一致するようにガイドされることを説明するための説明図である。(A) (b) (c) is explanatory drawing for demonstrating that a drill screw is guided to a front hole and the center axis of a drill screw is guided so that it may correspond with the center axis of a front hole. (a)〜(d)は先孔の形状とドリルねじ頭部付近の形状の組み合わせを説明するための説明図である。(A)-(d) is explanatory drawing for demonstrating the combination of the shape of a tip hole, and the shape of drill screw head vicinity. (a)〜(d)は先孔にドリルねじが嵌合された状態において、支圧面積が従来の場合よりも拡大されていることを説明するための説明図である。(A)-(d) is explanatory drawing for demonstrating that the bearing area is expanded rather than the conventional case in the state by which the drill screw was fitted by the front hole. (a)(b)(c)は、ドリルねじの頭部形状と表面仕上げ材との関係を示す説明図である。(A) (b) (c) is explanatory drawing which shows the relationship between the head shape of a drill screw, and a surface finishing material. 本発明を利用して、梁フランジおよび梁ウェッブと添設板とを接合して梁を直列に接合する場合の形態を示す一部縦断側面図である。It is a partially longitudinal side view showing a form in the case where a beam flange and a beam web are joined to an attachment plate by using the present invention to join the beams in series. 図7の縦断正面図である。It is a vertical front view of FIG. 本発明を利用して、柱フランジと添設板とを接合して梁を直列に接合する場合の形態を示す一部縦断側面図である。It is a partial longitudinal cross-sectional side view which shows the form in the case of joining a column flange and an attachment board and joining a beam in series using this invention. 図9の一部縦断正面図である。FIG. 10 is a partially longitudinal front view of FIG. 9. 本発明を利用して、鉄骨ブレースとガセットプレートとを接合する形態を示す側面図である。It is a side view which shows the form which joins a steel frame brace and a gusset plate using this invention. 本発明を利用して、トラスの弦材と斜材とを接合する形態を示す側面図である。It is a side view which shows the form which joins the chord material and diagonal material of a truss using this invention. 従来の鋼材の接合構造を示す説明図である。It is explanatory drawing which shows the joining structure of the conventional steel materials. 小径孔における大径孔よりの端部に截頭円錐状の傾斜面を設けた形態の説明図である。It is explanatory drawing of the form which provided the truncated cone-shaped inclined surface in the edge part from the large diameter hole in a small diameter hole.

符号の説明Explanation of symbols

1 ドリルねじ
2 ドリル部
3 ドリルねじ部
4 脚部
5 頭部
5a 截頭円錐状の頭部
5b 截頭円錐状の頭部
5c 截頭半球状の頭部
5d 短円柱状の頭部
5e 截頭円錐状湾曲傾斜側周面を備えた頭部
5f 小径孔
6 回動工具係合部
7 ドリル刃先端部
8 ねじ山
9 傾斜ガイド溝
10 ドリル刃
11 被接合部材
12 被接合部材
13 大径孔
13a 截頭円錐状の大径孔
13c 截頭円錐状の大径孔
13d 短円柱状の大径孔
13e 截頭円錐状湾曲傾斜面を備えた大径孔
13f 小径孔
13g 貫通孔
13i 縁部
13j 小径部
13k 截頭円錐状の傾斜面
14 梁
15 上添板
16 下添板
17 上フランジ
18 下フランジ
19 ウェッブ
20 縦添板
21 柱
22 フランジ
23 縦端板
25 ガセットプレート
26 ブレース
26a 縦部分
28 山形トラス
29 上弦材
29a 縦部分
30 下弦材
30a 縦部分
31 斜材
31a 縦部分
32 補強リブ
33 母屋材
34 母屋支持材
35 床材または壁材
36 凸部収容用凹部
37 円環状底部
38 小径先孔
DESCRIPTION OF SYMBOLS 1 Drill screw 2 Drill part 3 Drill screw part 4 Leg part 5 Head 5a A truncated cone-shaped head 5b A truncated cone-shaped head 5c A truncated hemispherical head 5d A short column-shaped head 5e Head 5f with conical curved inclined side peripheral surface 6 Small-diameter hole 6 Turning tool engaging portion 7 Drill blade tip 8 Thread 9 Inclined guide groove 10 Drill blade 11 Member 12 Member 12 Large-diameter hole 13a Frustoconical large diameter hole 13c frustoconical large diameter hole 13d short cylindrical large diameter hole 13e large diameter hole 13f with frustoconical curved inclined surface small diameter hole 13g through hole 13i edge 13j small diameter Portion 13k A truncated cone-shaped inclined surface 14 Beam 15 Upper plate 16 Lower plate 17 Upper flange 18 Lower flange 19 Web 20 Vertical plate 21 Column 22 Flange 23 Vertical end plate 25 Gusset plate 26 Brace 26a Vertical portion 28 Mountain truss 29 Upper chord material 29a Vertical portion 30 Lower chord material 30a Vertical portion 31 Diagonal material 31a Vertical portion 32 Reinforcement rib 33 Purlin material 34 Purlin support material 35 Floor material or wall material 36 Convex-contained concave portion 37 Annular bottom 38 Small diameter front hole

Claims (11)

ドリルねじを用いて鋼材相互の重合部を接合する鋼材の接合構造において、ドリルねじの頭部側に位置して接合される鋼材に先孔が設けられ、前記先孔は、ドリルねじのねじ軸部よりも外径寸法が大きく、かつドリルねじ頭部を嵌設する大径孔と、その大径孔に接続する小径孔とにより構成され、かつ前記小径孔は、ドリルねじのねじ部外径寸法よりも小さくされて、前記ドリルねじにより雌ねじ孔が設けられて接合されていることを特徴とする鋼材の接合構造。   In the joining structure of steel materials for joining the overlapped portions of steel materials using a drill screw, a tip hole is provided in the steel material to be joined located on the head side of the drill screw, and the tip hole is a screw shaft of the drill screw. The outer diameter of the drill screw is larger, the large diameter hole into which the drill screw head is fitted, and the small diameter hole connected to the large diameter hole. A steel joining structure characterized in that it is smaller than the size and is joined with a female screw hole provided by the drill screw. 小径孔は、ドリルねじ先端のドリル刃の外径寸法よりも大きく、かつドリルねじにおけるねじ部の外径寸法よりも小さい内径とされていることを特徴とする請求項1に記載の鋼材の接合構造。   The small-diameter hole has an inner diameter that is larger than the outer diameter dimension of the drill blade at the tip of the drill screw and smaller than the outer diameter dimension of the threaded portion of the drill screw. Construction. 小径孔は、ドリルねじ先端のドリル刃の外径寸法より小さい内径とされ、ドリルねじにおけるドリル刃により切削されると共にドリルねじ部により雌ねじ孔がタッピングされていることを特徴とする請求項1に記載の鋼材の接合構造。   The small-diameter hole has an inner diameter smaller than the outer diameter of the drill blade at the tip of the drill screw, and is cut by the drill blade in the drill screw and tapped with a female screw hole by the drill screw portion. Bonding structure of steel materials described. 小径孔における大径孔よりの端部に截頭円錐状の傾斜面が設けられていることを特徴とする請求項1〜3のいずれかに記載の鋼材の接合構造。   The steel material joining structure according to any one of claims 1 to 3, wherein a truncated conical inclined surface is provided at an end portion of the small diameter hole from the large diameter hole. 大径孔は、小径孔に向って漸次径が小さくなる傾斜面を有する大径孔とされ、これにドリルねじの頭部が嵌設されていることを特徴とする請求項1〜4のいずれかに記載の鋼材の接合構造。   The large-diameter hole is a large-diameter hole having an inclined surface whose diameter gradually decreases toward the small-diameter hole, and a head of a drill screw is fitted into the large-diameter hole. The joint structure of steel materials as described in Crab. 大径孔における小径孔側の端部に、ドリルねじのねじ部外径寸法よりも大きく、かつ大径孔内面に接続する環状の平坦面部が設けられ、その平坦面部を介して、小径孔の内面と大径孔の内面とが接続されていることを特徴とする請求項1〜5のいずれかに記載の鋼材の接合構造。   An annular flat surface portion larger than the threaded portion outer diameter dimension of the drill screw and connected to the inner surface of the large diameter hole is provided at the end portion on the small diameter hole side of the large diameter hole, and the small diameter hole is connected via the flat surface portion. The steel material joining structure according to any one of claims 1 to 5, wherein the inner surface and the inner surface of the large-diameter hole are connected. 大径孔にドリルねじの頭部側が収容されていることを特徴とする請求項1〜6のいずれか1項に記載の鋼材の接合構造。   The steel material joining structure according to any one of claims 1 to 6, wherein the head side of the drill screw is accommodated in the large-diameter hole. 請求項1〜7の鋼材の接合構造とするにあたり、ドリルねじにより削られた削りかすを、ドリルねじにより大径孔から鋼材の外側に排出しながら鋼材を接合することを特徴とする鋼材の接合方法。   In joining the steel materials according to claim 1, the steel materials are joined while discharging the shavings shaved by the drill screw from the large-diameter hole to the outside of the steel material by the drill screw. Method. 請求項1、2,4〜7のいずれかの鋼材の接合構造とするにあたり、最初に前記小径孔の内面によりドリルねじのドリル刃外側面をガイドして、小径孔の中心軸線と先孔の中心軸線を合致させるようにすると共に、鋼材とドリルねじの偏心を防止しながらドリルねじにより鋼材を接合することを特徴とする鋼材の接合方法。   In making the steel material joining structure according to any one of claims 1, 2, 4 to 7, the drill blade outer surface of the drill screw is first guided by the inner surface of the small diameter hole, and the center axis line of the small diameter hole and the tip hole A method for joining steel materials, characterized in that a steel material is joined by a drill screw while matching a central axis and preventing eccentricity of the steel material and the drill screw. 請求項1、3,4〜7のいずれかの鋼材の接合構造とするにあたり、最初に小径孔の軸方向端面に、ドリルねじのドリル刃先端傾斜面を当接して、小径孔の中心軸線にドリルねじの軸線を合わせるようにガイドして、ドリルねじの偏心を防止しながらドリルねじをねじ込むことを特徴とする鋼材の接合方法。   In making the steel structure of any one of claims 1, 3, and 4 to 7, first, the drill blade tip inclined surface of the drill screw is brought into contact with the axial end surface of the small-diameter hole so that the center axis of the small-diameter hole is brought into contact. A method for joining steel materials characterized by guiding a drill screw so that its axis is aligned and screwing the drill screw while preventing eccentricity of the drill screw. 請求項1〜7のいずれか1項記載の鋼材の接合構造が、鉄骨部材の柱と梁の接合部、柱と柱または梁と梁の接合部あるいは梁と小梁の接合部等の鉄骨部材の接合部に用いられていることを特徴とする鉄骨造の構造物。   The steel member joining structure according to any one of claims 1 to 7, wherein a steel-member member such as a column-to-beam junction, a column-to-column or beam-to-beam junction or a beam-to-beam junction in a steel member Steel structure, characterized in that it is used for joints.
JP2006066611A 2006-03-10 2006-03-10 Joining structure and joining method of steel material, and building of frame construction Pending JP2007239960A (en)

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