JP4370052B2

JP4370052B2 - Fire metal fittings

Info

Publication number: JP4370052B2
Application number: JP2000372402A
Authority: JP
Inventors: 弘行永尾; 康徳渡辺; 俊一島田
Original assignee: Sumitomo Forestry Co Ltd
Current assignee: Sumitomo Forestry Co Ltd
Priority date: 2000-12-07
Filing date: 2000-12-07
Publication date: 2009-11-25
Anticipated expiration: 2020-12-07
Also published as: JP2002173980A

Description

【０００１】
【発明の属する技術分野】
本願発明は、建築構造物の横方向部材がほぼ直角に、又は所定の角度で接合される部分に設けられる火打ちに係るものであり、特に金属からなる火打ち金具に関する。
【０００２】
【従来の技術】
住宅等の木造建築物においては、柱、間柱、梁、胴差し、桁等を用いて軸組を形成する構造が古くから採用されている。
このような構造における梁や胴差し等の横架材がほぼ直角に接合される部分に、これらの部材と４５°の角度をなすように火打ちが設けられる。この火打ちを設けることにより、大きな外力が作用したときにも接合される二つの部材間の角度が維持され、耐震性が著しく向上するものである。
【０００３】
従来から、図５に示すように、ボルト１０２等により横架材１１１に接合される木製の火打ち１０１が多く用いられてきたが、図６に示すように、鋼等の金属からなる火打ち１０３が使用される場合も増加している。このような火打ち金具１０３を用いることによって、接合される横架材１１２の加工が簡略化される。
【０００４】
一方、梁や胴差し等の横架材には、床を形成するための根太が支持される。根太１１３は、図６に示すように、横架材１１２の上に載せるように固定されることもあるが、横架材に切り欠きを設け、根太を嵌め入れて固定されるものがある。
例えば、図７に示すように、畳１２３を敷いた部屋１２１の畳上面とフローリングの部屋１２２の床材１２４の上面とを、ほぼ同じ高さに設定するためには、フローリングの床の根太１２６よりも畳を敷いた部屋の根太１２５を低い位置に支持しなければならない。このため、畳１２３を敷いた部屋の根太１２５は、横架材１２７に設けられた切り欠きに嵌め入れて固定される。
このような構造では、上記火打ち金具１０３は、根太と干渉しないように取り付ける必要があり、畳を敷いた部屋側では、横架材１２７の側面であって根太１２５の下面より下方の部分Ａに固定される。
【０００５】
【発明が解決しようとする課題】
しかしながら、上記のように、根太との干渉を避けるために、火打ち金具の取り付け位置が制限されると、次のような問題点が生じる。
一般に、火打ち金具は、横架材と強固に接合するために、直状部分の両端に取り付け部が形成されており、図６に示すように、拡幅された取り付け部１０３ａが横架材１１２に当接される。そして、ボルト又はビス等によって固着される。しかし、根太１１３との干渉を避けるために、火打ち金具の位置が制限されると、拡幅された取り付け部を横架材の側面に当接できなくなることがある。このため、取り付け部を拡幅することなく、限られた幅にして、横架材の下側に火打ち金具を取り付けることになる。
【０００６】
また、根太等との干渉を避けるために、横架材の隅角部から火打ち金具の取り付け位置までの長さ（踏ん張り寸法）を小さくすることが望まれ、この踏ん張り寸法を６００ｍｍ程度以下とするものを用いることがある。
【０００７】
このような火打ち金具では、取り付け部に大きな力が作用し、簡単な構造で横架材に強固に固着できるものが望まれる。
【０００８】
本願発明は、上記のような事情に鑑みてなされたものであり、その目的は、取り付け位置が制限されても横架材に強固に固着することができる火打ち金具を提供することである。
【０００９】
【課題を解決するための手段】
上記課題を解決するために、請求項１に係る発明は、相互間に角度を有するように配置される二つの横架材の接合部付近で、双方の横架材を連結する火打ち金具であって、直状部分の両端に、接合される二つの横架材のそれぞれの側面に当接され固着される板状の取り付け部を有し、該取り付け部は、先端部分が第１の折り曲げ線で前記横架材との当接面側に曲折され、先端を鋭利に尖らせた該横架材への打ち込み部が形成されており、前記第１の折り曲げ線の後方に設けられた第２の折り曲げ線より先端側は、前記横架材との当接面と反対側に曲げ加工されて前記打ち込み部の先端が前記横架材との当接面より後退した位置となっており、前記第１の折り曲げ線近傍の前記第２の折り曲げ線側には、釘又はビスを挿通する小孔が設けられている火打ち金具を提供する。
【００１０】
上記火打ち金具では、取り付け部を横架材の側面に当接して、ボルト又はビス等によって固着するとともに、取り付け部先端の打ち込み部を横架材に打ち込むことができる。これにより、取り付け部は横架材に強固に噛み合い、位置がずれることなく強固に固定される。
また、ボルト等に作用する力が軽減され、火打ちに大きな力が作用しても取り付け部で破壊が生じるおそれが低減される。
【００１１】
一方、この火打ち金具では、取り付け部先端の打ち込み部が横架材の側面から後退した状態で、該取り付け部の主要部分を横架材にぴったりと当接させることができる。したがって、横架材の側面に当接して火打ち金具の位置を正確に決め、釘・ビス等で固定した後に尖った先端を横架材に打ち込んで強固に接合することができる。また、尖った先端を予め横架材の所定位置に打ち込んで仮留めし、ボルトの締結又は釘の打ち込み等の作業を安全に行うことも可能となる。
さらに、尖った先端が取り付け部の主要部分より後退しているので、製造工程において、尖った先端が障害となるのを回避することができる。
【００１２】
また、この火打ち金具では、取り付け部の先端の打ち込み部を横架材に打ち込んだ後、小孔にビス等を挿通して打ち込み部付近を横架材にしっかりと押し付けることができる。これにより、打ち込み部が横架材から抜け出すのが防止され、火打ちに大きな力が作用しても取り付け部の位置がずれるような事態が防止される。
【００１３】
請求項２に係る発明は、請求項１に記載の火打ち金具において、前記取り付け部の前記横架材に当接される部分には、ボルト、釘又はビスを挿通することができる貫通孔が設けられており、前記貫通孔の先端側には、前記直状部分の軸線と直角方向に長軸を有する範囲を凸状に加工して補剛部が形成されているものとする。
【００１４】
請求項３に係る発明は、請求項１に記載の火打ち金具において、前記直状部分は、前記取り付け部と連続する鋼板材で形成され、該直状部分と取り付け部との境界は所定の角度で折り曲げられ、該折り曲げ線の両側にわたって、前記鋼板材を凸状又は凹状に加工したリブが設けられているものとする。
【００１５】
この火打ち金具では、直状部分と取り付け部との境界に設けられたリブによって双方間の曲げ角度が変化するのを有効に防止することができ、横架材の変位を拘束する効果が増大する。
【００１６】
【発明の実施の形態】
以下、本願に係る発明の実施の形態を図に基づいて説明する。
図１は、本願発明の一実施形態である火打ち金具の使用状態を示す概略図、図２は、上記火打ち金具の側面図及び平面図、図３は、上記火打ち金具の取り付け部を示す概略斜視図、図４は、上記火打ち金具の直状部分の断面図である。
この火打ち金具１は、図１に示すように、直角に接合された二つの横架材２、２間に、それぞれの横架材２、２と該火打ち金具１の直状部分１０の軸線とがほぼ４５°の角度をなすように取り付けられたものである。
【００１７】
上記横架材２、２は、木造建築物の２階部分の床を支持するものであるが、上記火打ち金具１は、基礎上に支持される土台や軒桁等の横架材がほぼ直角に接合される部分に汎用的に適用することができるものである。
【００１８】
上記火打ち金具１は、鋼板材を曲げ加工して形成されたものであり、横架材とほぼ４５°の角度に配置される直状部分１０と、該直状部分の両端に、木部材である横架材２に固着するために形成された取り付け部２０とを有している。
【００１９】
上記直状部分１０は、図４に示すように、断面形状が溝状となるように鋼板材を曲げ加工したもので、充分な曲げ剛性を有している。
【００２０】
上記取り付け部２０は、上記直状部分１０と連続する鋼板材で形成され、直状部分１０の軸線とほぼ４５°の角度をなす横架材への当接面２１が形成されている。この横架材２に当接される部分には、ボルト、釘又はビス等を挿通することができる貫通孔２２が形成されており、この貫通孔２２に挿通されたボルト又は釘３等によって横架材２にしっかりと固定するようになっている。
【００２１】
また、上記貫通孔２２の先端側には、上記直状部分１０の軸線と直角方向に凸状に加工したリブ２３が形成されている。このリブ２３は、火打ち金具１に大きな引張力が作用したときに、貫通孔２２に挿通された釘３等の反力が作用し、大きな変形が生じて取り付け部が破断するのを防止する目的で形成されたものである。
【００２２】
一方、横架材への当接部分と直状部分との境界となる折り曲げ部２４には、直状部分の軸線方向のリブ２５が設けられている。
このリブも、鋼板材を凸状に曲げ加工することによって形成されており、折り曲げ部の変形を防止するために設けられたものである。
【００２３】
上記取り付け部２０の先端部分は、第１の折り曲げ線２６で、横架材との当接面側にほぼ直角に曲げ加工され、先端が尖った形状に切削加工された打ち込み部２７となっている。また、上記第１の折り曲げ線２６の後方には、上記第１の折り曲げ線とほぼ平行な第２の折り曲げ線２８が形成され、横架材との当接面と反対側に曲げ加工されて上記打ち込み部２７の先端が当接面２１より後退した位置となるように設定されている。つまり、この火打ち金具１を所定の位置で横架材２に当接させたときに、取り付け部２０の当接面２１は横架材２の側面とぴったりと接触しても、上記打ち込み部２７の先端は横架材２の側面に接触しないようになっている。
【００２４】
上記第１の折り曲げ線２６近傍の直状部分側には、ビス又は釘等を挿通することができる複数の小孔２９が設けられている。
なお、上記取り付け部２０は、図２（ａ）に示すように、直状部分とほぼ同じ幅となっており、取り付け部２０を横架材２に当接して固着するときに、大きな領域を占有しないようにされている。また、この火打ち金具１は、横架材２に取り付けられたときに、隅角部４から取り付け位置までの長さが約６００ｍｍとなるものであり、他の部材との干渉を回避しやすくなっている。ただし、この寸法は適宜に設計できるものであり、必要な強度等に応じて定められる。
【００２５】
上記のような火打ち金具１では、取り付け部２０の幅が直状部分と同じ幅で、小さくなっているので、図１に示すように、根太５が横架材２の切り欠きに嵌め入れられるように固定されていても、干渉することなく取り付けることができる。
【００２６】
また、取り付け部２０はボルト又は釘３等によって固定されるとともに、取り付け部２０の先端に設けられた打ち込み部２７が横架材２に貫入される。そして、小孔２９に挿通されたビス等によって横架材２にしっかりと押さえつけられるので、該火打ち金具１は横架材２に強固に固定され、大きな力が作用しても取り付け部の位置がずれたりすることもなく横架材の変形を拘束するものとなる。
【００２７】
なお、上記取り付け部２０の貫通孔２２に挿通して火打ち金具１を横架材２に固定するボルト又は釘としては、例えば螺旋状の溝を有する釘（ラグスクリュー）を用いるのが望ましい。特に、径が８ｍｍ程度のものは充分な強度を有するとともに、横架材にリード穴を設ける必要がなく、作業の効率化を図ることができる。
【００２８】
【発明の効果】
以上説明したように、本願発明に係る火打ち金具では、横架材に取り付けるときに、根太等の他の部材と干渉することが少なくなるとともに、横架材に強固に取り付けることができ、充分な耐力を有するものとなる。
【図面の簡単な説明】
【図１】本願発明の一実施形態である火打ち金具の使用状態を示す概略図である。
【図２】図１に示す火打ち金具の側面図及び平面図である。
【図３】図１に示す火打ち金具の取り付け部を示す概略斜視図である。
【図４】図１に示す火打ち金具の直状部分の断面図である。
【図５】従来の火打ちを示す概略図である。
【図６】従来から用いられている火打ち金具の例を示す概略図である。
【図７】横架材とこれに支持される根太と火打ち金具が取り付けられる位置との関係を示す概略断面図である。
【符号の説明】
１火打ち金具
２横架材
３釘
４横架材の隅角部
５根太
１０直状部分
２０取り付け部
２１横架材との当接面
２２貫通孔
２３リブ
２４直状部分と取り付け部との境界となる折り曲げ部
２５リブ
２６第１の折り曲げ線
２７打ち込み部
２８第２の折り曲げ線
２９小孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire-fitting provided at a portion where the transverse members of the building structure are joined at a substantially right angle or a predetermined angle, and particularly relates to a metal-fired metal fitting.
[0002]
[Prior art]
In a wooden building such as a house, a structure in which a frame is formed using columns, studs, beams, torches, girders, etc. has long been adopted.
In such a structure, fire striking is provided at a portion where horizontal members such as beams and trunks are joined at a substantially right angle so as to form an angle of 45 ° with these members. By providing this firing, the angle between the two members to be joined is maintained even when a large external force is applied, and the earthquake resistance is remarkably improved.
[0003]
Conventionally, as shown in FIG. 5, a wooden fire 101 joined to the horizontal member 111 by a bolt 102 or the like has been used, but as shown in FIG. 6, a fire 103 made of metal such as steel is used. Increasing use. By using such a hot metal fitting 103, the processing of the horizontal member 112 to be joined is simplified.
[0004]
On the other hand, joists for forming a floor are supported on horizontal members such as beams and torso. As shown in FIG. 6, the joist 113 may be fixed so as to be placed on the horizontal member 112, but there are some which are provided with a notch in the horizontal member and fitted with joists.
For example, as shown in FIG. 7, in order to set the tatami mat upper surface of the room 121 on which the tatami mat 123 is laid and the upper surface of the floor material 124 of the flooring room 122 to substantially the same height, the floor joist 126 of the flooring floor is used. The joist 125 in the room with tatami mats must be supported at a lower position. For this reason, the joists 125 of the room on which the tatami mat 123 is laid are fitted and fixed in the notches provided in the horizontal member 127.
In such a structure, it is necessary to attach the fire metal fitting 103 so as not to interfere with the joist. In the room side where the tatami is laid, the side portion of the horizontal member 127 and below the lower surface of the joist 125 is provided on the portion A. Fixed.
[0005]
[Problems to be solved by the invention]
However, as described above, when the mounting position of the fire metal fitting is restricted in order to avoid interference with the joist, the following problems arise.
In general, in order to firmly join the fire metal fitting to the horizontal member, attachment portions are formed at both ends of the straight portion, and the widened attachment portion 103a is formed on the horizontal member 112 as shown in FIG. Abutted. And it adheres with a volt | bolt or a screw | thread. However, if the position of the fire metal fitting is restricted in order to avoid interference with the joists 113, the widened attachment portion may not be able to contact the side surface of the horizontal member. For this reason, it is set to a limited width without widening the attachment portion, and the fire metal fitting is attached to the lower side of the horizontal member.
[0006]
In addition, in order to avoid interference with joists, etc., it is desired to reduce the length from the corner of the horizontal member to the mounting position of the fire metal fitting (tension dimensions), and this strut dimension should be about 600 mm or less. Things may be used.
[0007]
In such a fire metal fitting, it is desired that a large force acts on the mounting portion and can be firmly fixed to the horizontal member with a simple structure.
[0008]
This invention is made | formed in view of the above situations, The objective is to provide the fire metal fitting which can be firmly fixed to a horizontal member, even if an attachment position is restrict | limited.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention according to claim 1 is a fire-fitting metal fitting for connecting both horizontal members in the vicinity of a joint portion between two horizontal members arranged so as to have an angle between each other. And a plate-like attachment portion that is brought into contact with and fixed to each side surface of the two horizontal members to be joined at both ends of the straight portion, and the attachment portion has a first fold line at the tip portion . in the are bent to the side in contact with the horizontal members, the tip is implanted portion of the sharpened sharpened so the lateral bridging member is formed of a second provided behind the first folding line the distal end side than the bending lines, has a position in which the tip of the driving portion is opposite to the bending and the contact surface is recessed from the contact surface between the horizontal member and the horizontal member, the A small hole for inserting a nail or a screw is provided on the second fold line side in the vicinity of the first fold line. To provide the angle brace bracket you are.
[0010]
In the above-mentioned fire-fitting metal fitting, the mounting portion can be brought into contact with the side surface of the horizontal member and fixed with bolts or screws, and the driving portion at the tip of the mounting portion can be driven into the horizontal member. As a result, the attachment portion meshes firmly with the horizontal member, and is firmly fixed without being displaced.
Further, the force acting on the bolt or the like is reduced, and the possibility that the attachment portion will break even if a large force acts on the fire is reduced.
[0011]
On the other hand, in this fire metal fitting, the main part of the mounting portion can be brought into tight contact with the horizontal member in a state where the driving portion at the tip of the mounting portion is retracted from the side surface of the horizontal member. Therefore, it is possible to accurately determine the position of the fire-fitting metal fitting in contact with the side surface of the horizontal member, and fix it with a nail, a screw or the like, and then drive the pointed tip into the horizontal member to firmly join it. In addition, it is possible to safely perform a work such as fastening a bolt or driving a nail by driving a pointed tip into a predetermined position of the horizontal member in advance and temporarily fastening it.
Furthermore, since the sharp tip is retracted from the main part of the attachment portion, it is possible to avoid the sharp tip from becoming an obstacle in the manufacturing process.
[0012]
Further, in this fire-fitting metal fitting, after the driving portion at the tip of the attachment portion is driven into the horizontal member, a screw or the like can be inserted into the small hole and the vicinity of the driving portion can be firmly pressed against the horizontal member. As a result, the driving portion is prevented from slipping out of the horizontal member, and a situation in which the position of the mounting portion is displaced even when a large force acts on the fire is prevented.
[0013]
According to a second aspect of the present invention, in the fire metal fitting according to the first aspect, a through hole through which a bolt, a nail, or a screw can be inserted is provided in a portion of the mounting portion that is in contact with the horizontal member. A stiffening portion is formed on the tip end side of the through hole by processing a range having a long axis in a direction perpendicular to the axis of the straight portion into a convex shape.
[0014]
The invention according to claim 3 is the fire metal fitting according to claim 1, wherein the straight portion is formed of a steel plate material continuous with the attachment portion, and a boundary between the straight portion and the attachment portion is a predetermined angle. It is assumed that ribs obtained by processing the steel plate material into a convex shape or a concave shape are provided on both sides of the folding line.
[0015]
In this fire metal fitting, it is possible to effectively prevent the bending angle between the two from being changed by the rib provided at the boundary between the straight portion and the attachment portion, and the effect of restraining the displacement of the horizontal member is increased. .
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the invention according to the present application will be described with reference to the drawings.
FIG. 1 is a schematic view showing a usage state of a fire metal fitting according to an embodiment of the present invention, FIG. 2 is a side view and a plan view of the fire metal fitting, and FIG. 3 is a schematic perspective view showing an attachment part of the flame metal fitting. FIG. 4 and FIG. 4 are cross-sectional views of the straight portion of the above-mentioned fired fitting.
As shown in FIG. 1, the fire metal fitting 1 is formed between two horizontal members 2, 2 joined at right angles, with the horizontal members 2, 2 and the axis of the straight portion 10 of the fire metal fitting 1. Is attached at an angle of approximately 45 °.
[0017]
The horizontal members 2 and 2 support the floor of the second floor portion of the wooden building, but the fire-fitting metal 1 has horizontal members such as foundations and eaves girders that are supported on the foundation at almost right angles. It can be applied universally to the part to be joined.
[0018]
The fire metal fitting 1 is formed by bending a steel plate material. A straight portion 10 disposed at an angle of approximately 45 ° with the horizontal member, and wooden members at both ends of the straight portion. And a mounting portion 20 formed to be fixed to the horizontal member 2.
[0019]
As shown in FIG. 4, the straight portion 10 is obtained by bending a steel plate so that the cross-sectional shape is a groove shape, and has sufficient bending rigidity.
[0020]
The attachment portion 20 is formed of a steel plate material continuous with the straight portion 10, and a contact surface 21 is formed on a horizontal member that forms an angle of approximately 45 ° with the axis of the straight portion 10. A through hole 22 into which a bolt, a nail, a screw, or the like can be inserted is formed in a portion that comes into contact with the horizontal member 2. It is designed to be firmly fixed to the frame 2.
[0021]
A rib 23 is formed on the front end side of the through hole 22 so as to be convex in a direction perpendicular to the axis of the straight portion 10. The rib 23 has a purpose of preventing the attachment portion from being broken due to a large deformation caused by a reaction force of the nail 3 or the like inserted through the through-hole 22 when a large tensile force is applied to the fired fitting 1. Is formed.
[0022]
On the other hand, a rib 25 in the axial direction of the straight portion is provided in the bent portion 24 that becomes a boundary between the contact portion with the horizontal member and the straight portion.
This rib is also formed by bending a steel plate material into a convex shape, and is provided to prevent deformation of the bent portion.
[0023]
The tip portion of the mounting portion 20 is a driving portion 27 that is bent at a first folding line 26 at a substantially right angle on the contact surface side with the horizontal member and cut into a sharp shape at the tip. Yes. In addition, a second fold line 28 that is substantially parallel to the first fold line 26 is formed behind the first fold line 26 and is bent to the opposite side of the contact surface with the horizontal member. The tip of the driving portion 27 is set to a position retracted from the contact surface 21. That is, when the fire metal fitting 1 is brought into contact with the horizontal member 2 at a predetermined position, even if the contact surface 21 of the mounting portion 20 closely contacts the side surface of the horizontal member 2, the driving portion 27 The tip of is not in contact with the side surface of the horizontal member 2.
[0024]
A plurality of small holes 29 through which screws, nails or the like can be inserted are provided on the straight portion side in the vicinity of the first fold line 26.
As shown in FIG. 2A, the attachment portion 20 has substantially the same width as the straight portion, and a large area is formed when the attachment portion 20 is fixed to the horizontal member 2 in contact with it. Do not occupy. Moreover, when this fire metal fitting 1 is attached to the horizontal member 2, the length from the corner portion 4 to the attachment position is about 600 mm, and it is easy to avoid interference with other members. ing. However, this dimension can be designed as appropriate and is determined according to the required strength.
[0025]
In the above-described metal fitting 1, since the width of the attachment portion 20 is the same as that of the straight portion and is small, the joist 5 is fitted into the notch of the horizontal member 2 as shown in FIG. 1. Even if it is fixed, it can be attached without interference.
[0026]
Further, the mounting portion 20 is fixed by bolts or nails 3 or the like, and a driving portion 27 provided at the tip of the mounting portion 20 is inserted into the horizontal member 2. And since it is firmly pressed against the horizontal member 2 by a screw or the like inserted through the small hole 29, the fire-fitting metal fitting 1 is firmly fixed to the horizontal member 2, and the position of the attachment portion is maintained even if a large force is applied. The deformation of the horizontal member is constrained without shifting.
[0027]
In addition, it is desirable to use, for example, a nail (lag screw) having a spiral groove as a bolt or a nail that is inserted into the through hole 22 of the mounting portion 20 and fixes the fired fitting 1 to the horizontal member 2. In particular, a material having a diameter of about 8 mm has sufficient strength, and it is not necessary to provide a lead hole in the horizontal member, so that work efficiency can be improved.
[0028]
【The invention's effect】
As explained above, in the fired fitting according to the present invention, when it is attached to the horizontal member, it is less likely to interfere with other members such as joists, and it can be firmly attached to the horizontal member. It will have proof stress.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a usage state of a fired metal fitting according to an embodiment of the present invention.
FIGS. 2A and 2B are a side view and a plan view of the fired metal fitting shown in FIG.
FIG. 3 is a schematic perspective view showing an attachment part of the fire metal fitting shown in FIG. 1;
4 is a cross-sectional view of a straight portion of the fired metal fitting shown in FIG. 1. FIG.
FIG. 5 is a schematic view showing conventional firing.
FIG. 6 is a schematic view showing an example of a hitting metal fitting used conventionally.
FIG. 7 is a schematic cross-sectional view showing the relationship between a horizontal member, a joist supported by the horizontal member, and a position where a fire metal fitting is attached.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fire metal fittings 2 Horizontal member 3 Nail 4 Corner part of horizontal member 5 joist 10 straight part 20 attachment part 21 contact surface 22 with horizontal member Through-hole 23 rib 24 boundary between straight part and attachment part Bending portion 25 to be formed Rib 26 First folding line 27 Driving portion 28 Second folding line 29 Small hole

Claims

In the vicinity of the joint of two horizontal members arranged so as to have an angle between each other, it is a fire metal fitting for connecting both horizontal members,
At both ends of the straight part, it has a plate-like attachment part that is in contact with and fixed to each side surface of the two horizontal members to be joined,
The attachment portion has a distal end portion bent at a contact surface side with the horizontal member at a first fold line, and a driving portion to the horizontal member having a sharpened tip is formed .
The tip side of the second fold line provided behind the first fold line is bent to the opposite side of the contact surface with the horizontal member, and the tip of the driving portion is connected to the horizontal member. It is in a position retracted from the contact surface of
A fire-fitting fitting characterized in that a small hole through which a nail or a screw is inserted is provided on the second fold line side in the vicinity of the first fold line .

The portion of the mounting portion that comes into contact with the horizontal member is provided with a through-hole through which a bolt, nail, or screw can be inserted,
The stiffening part is formed in the front end side of the said through-hole by processing the range which has a long axis in the direction orthogonal to the axis line of the said straight part into convex shape, The stiffening part is formed . Fire metal fittings.

The straight portion is formed of a steel plate material continuous with the attachment portion, and a boundary between the straight portion and the attachment portion is bent at a predetermined angle, and the steel plate material is formed in a convex shape over both sides of the fold line. 2. The fire-fitting fitting according to claim 1, wherein a rib processed into a concave shape is provided.