JP2005090518A - Wood screw for plywood for floor and floor fastening construction - Google Patents

Wood screw for plywood for floor and floor fastening construction Download PDF

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JP2005090518A
JP2005090518A JP2003320438A JP2003320438A JP2005090518A JP 2005090518 A JP2005090518 A JP 2005090518A JP 2003320438 A JP2003320438 A JP 2003320438A JP 2003320438 A JP2003320438 A JP 2003320438A JP 2005090518 A JP2005090518 A JP 2005090518A
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plywood
floor
screw
wood
wood screw
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Yasuteru Karibe
泰輝 苅部
Hiroki Karibe
浩希 苅部
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HIGASHI NIPPON POWER FASTENING
HIGASHI NIPPON POWER FASTENING KK
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HIGASHI NIPPON POWER FASTENING
HIGASHI NIPPON POWER FASTENING KK
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0015—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a soft organic material, e.g. wood or plastic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0057—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections
    • F16B25/0063—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections with a non-threaded portion on the shaft of the screw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F16B25/106—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a self-piercing screw-point, i.e. without removing material

Abstract

<P>PROBLEM TO BE SOLVED: To enable the improvement of the earthquake resistance in a wooden building using the most suitable wood screw for a plywood for a floor. <P>SOLUTION: An outer screw 2 is formed at an front end side of a shaft 1 by form rolling using a steel wire containing boron. A dish-lile head 3 is formed at the rear end, and after the form rolling, is subjected to carbonizing/tempering. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、木造耐震構造において用いられる床用合板と梁等を締結する木ネジおよびその床締結構造に関する。   The present invention relates to a wood screw for fastening a floor plywood and a beam used in a wooden earthquake-resistant structure, and a floor fastening structure thereof.

従来の木造建築構造ではその床に１２mm程度の合板を用い、床と根太との間を釘を用いて締結固定していた。
また、木造耐震構造を確保するものとして２４mm以上の床用合板を用い、横揺れ性能を１．２倍向上させたものが提案されている。この床用合板は根太を省略でき、胴差しと梁に直接床用合板を釘により固定するものである。この構造は工事の短縮と撓みの減少、特に歩行による床鳴りを減少させる効果があった。 In the conventional wooden building structure, about 12mm plywood is used for the floor, and the floor and joists are fastened and fixed using nails.
Moreover, what has improved the rolling performance 1.2 times using the plywood for floors of 24 mm or more as what secures a wooden earthquake-proof structure is proposed. This floor plywood can omit joists, and the floor plywood is directly fixed to the trunk and the beam with nails. This structure has the effect of shortening the construction and reducing the bending, especially the floor noise caused by walking.

従来の床用合板を梁や胴差し或いは柱等に固定するには、耐震用の釘として剪断強さの強いＮ７５を用いていた。しかしながら床用合板の場合、合板の反りや撓みが釘打ち作業だけでは確実に押さえることができない欠点があった。この場合、反りや撓みを吸収するため、釘頭部をハンマーで必要以上叩き付けていたが、それでも反りや撓みを補正できないことが多かった。
さらに釘をハンマーで叩き付けると、その度に釘が上下動し、釘穴が大きくなり過ぎて保持力が却って低下することがあった。
また、床用合板を梁等に締結した後にその床上に家財道具を収納すると、その合板の反りや撓みが修正され、その分だけ釘頭が浮き上がる状態が生じる。すると、歩行の際に床鳴りが発生する欠点があった。 In order to fix a conventional plywood for floor to a beam, torso or pillar, N75 having a high shear strength has been used as a nail for earthquake resistance. However, in the case of floor plywood, there has been a drawback that warping and bending of the plywood cannot be reliably suppressed only by nailing. In this case, the head of the nail was struck with a hammer more than necessary to absorb warpage and deflection, but still warp and deflection could often not be corrected.
Further, when the nail was struck with a hammer, the nail moved up and down each time, the nail hole became too large, and the holding force sometimes decreased.
Further, when the household goods tool is stored on the floor after the floor plywood is fastened to the beam or the like, the warp and the flexure of the plywood are corrected, and the nail head is lifted accordingly. Then, there was a fault that flooring occurred during walking.

なお、このような釘の代わりに木ネジを用いれば、床と梁等との間をより強く締結固定できることは予測される。しかしながら、同一の太さの釘を用いる場合に対して、木ネジの場合には剪断力が低下すると共に、曲げに対する耐力も低下する。即ち、木ネジの場合にはネジ部を形成する必要から、ネジ底半径が釘直径よりも低下するため剪断力が２０〜３０％程度低下する。
また、木ネジ形成の際にネジ部および軸部の加工硬化および熱処理硬化が生じ、地震等により床材と梁等との間に相対移動が生じると剪断力が発生し、簡単に破損してしまう欠点がある。
そこで本発明は、上記の欠点を取り除いた床用合板用の木ネジおよびその床締結構造を提供することを課題とする。 If wood screws are used in place of such nails, it is predicted that the floor and the beam can be tightened and fixed more strongly. However, in the case of wood screws, the shearing force is reduced and the bending resistance is reduced as compared with the case where nails having the same thickness are used. That is, in the case of a wood screw, since it is necessary to form a screw portion, the shearing force is reduced by about 20 to 30% because the screw bottom radius is lower than the nail diameter.
Also, when forming the wood screw, work hardening and heat treatment hardening of the screw part and shaft part occur, and if a relative movement occurs between the flooring and the beam etc. due to an earthquake or the like, shearing force is generated and easily broken. There is a drawback.
Then, this invention makes it a subject to provide the wood screw for plywood for floors which removed said fault, and its floor fastening structure.

請求項１に記載の本発明は、ボロンを含む鋼線材を用い、転造加工によりその軸部(1) の先端部側に外ネジ部(2) が形成されると共に、後端に皿状の頭部(3) が形成され、
その転造加工の後に、浸炭・焼戻処理により表面のビッカース硬度が 550〜650 ＨＶ、核心のロックウエルＣ硬度が28〜44ＨＲＣにしてなる床用合板用の木ネジである。
請求項２に記載の本発明は、請求項１において、
低炭素鋼の基材に、ボロンを0.0005〜0.003 重量％含む床用合板用の木ネジである。 The present invention according to claim 1 uses a steel wire rod containing boron, and an outer thread portion (2) is formed on the tip end side of the shaft portion (1) by rolling, and a dish-like shape is formed at the rear end. Head (3) is formed,
It is a wood screw for plywood for floors that has a surface Vickers hardness of 550 to 650 HV and a core Rockwell C hardness of 28 to 44 HRC by carburizing and tempering after the rolling process.
The present invention according to claim 2 is the method according to claim 1,
This is a wood screw for plywood for floors containing 0.0005 to 0.003% by weight of boron in a low carbon steel base material.

請求項３に記載の本発明は、請求項１において、
マンガン鋼またはシリコンキルド鋼の基材に、ボロンを0.0005〜0.003 重量％含む床用合板用の木ネジである。
請求項４に記載の本発明は、請求項１〜請求項３のいずれかにおいて、
前記外ネジ部(2) が右ネジに形成され、前記頭部(3) に隣接した部分のみの軸部(1) に右ネジで、前記外ネジ部(2) のネジ山高さより低く且つその外ネジ部(2) のピッチより小なる抜け止め用小ネジ部(2a)が形成された床用合板用の木ネジである。 The present invention according to claim 3 provides the method according to claim 1,
This is a wood screw for floor plywood containing 0.0005 to 0.003% by weight of boron in a base material of manganese steel or silicon killed steel.
A fourth aspect of the present invention provides the method according to any one of the first to third aspects,
The outer thread portion (2) is formed as a right-hand thread, and the right-hand thread is provided on the shaft portion (1) adjacent to the head portion (3), which is lower than the thread height of the outer thread portion (2) and This is a wood screw for floor plywood in which a retaining screw (2a) smaller than the pitch of the outer thread (2) is formed.

請求項５に記載の本発明は、請求項１〜請求項４のいずれかにおいて、
前記外ネジ部(2) の先端にドリル刃先部(5) が形成された床用合板用の木ネジである。 請求項６に記載の本発明は、請求項１〜請求項５のいずれかの木ネジが用いられ、
床用合板(6) と、梁(7) または桁あるいは胴差し（以下梁等という）とが締結接合され、その外ネジ部(2) の全てが梁(7) 等に螺着され、その床用合板(6) と梁(7) 等との境に前記軸部が位置し、前記抜け止め用小ネジ部(2a)が床用合板(6) のみに螺着された床用合板と梁等との床締結構造である。 The present invention according to claim 5 provides the method according to any one of claims 1 to 4,
This is a wood screw for floor plywood in which a drill cutting edge portion (5) is formed at the tip of the external screw portion (2). As for this invention of Claim 6, the wood screw in any one of Claims 1-5 is used,
The floor plywood (6) and the beam (7) or the girder or the trunk (hereinafter referred to as a beam, etc.) are fastened and joined, and all of the outer threaded parts (2) are screwed to the beam (7), etc. A floor plywood in which the shaft portion is located at a boundary between the floor plywood (6) and the beam (7), and the retaining screw (2a) is screwed only to the floor plywood (6). It is a floor fastening structure with beams.

本発明の床用合板用の木ネジは、ボロンを含む鋼線材を転造加工により木ネジに形成し、その転造加工の後に浸炭、焼戻処理がされているから、床用合板６と梁７との間をこの木ネジで締結した場合、地震等により床用合板６と梁７との間にズレが生じても、その木ネジ12が変形して、両者間の締結状態は依然として保たれる。即ち、地震等により木ネジ12が切断されるおそれがない。それによって、締結構造の信頼性を向上できる。   The wood screw for floor plywood of the present invention is formed by forming a steel wire rod containing boron into a wood screw by rolling, and carburizing and tempering are performed after the rolling, so that the floor plywood 6 and When the wood screw is fastened to the beam 7, even if there is a gap between the floor plywood 6 and the beam 7 due to an earthquake or the like, the wood screw 12 is deformed and the fastening state between the two is still Kept. That is, there is no possibility that the wood screw 12 is cut by an earthquake or the like. Thereby, the reliability of the fastening structure can be improved.

上記構成おいて、外ネジ部(2) を右ネジに形成し、前記頭部(3) に隣接した部分のみの軸部(1) に右ネジで、前記外ネジ部(2) のネジ山高さより低く且つその外ネジ部(2) のピッチより小なる抜け止め用小ネジ部(2a)を形成することができる。これにより締結された木ネジ12が緩むことを防止し、木ネジ12の頭部３が床用合板６の表面から突出したり、歩行の度に床鳴りがしたりすることを防止できる。
また、木ネジ12の外ネジ部２の先端にドリル刃先部５を形成することにより、木ネジの締結時に梁７に割れが生じることを防止できる。 In the above configuration, the external thread portion (2) is formed as a right-hand thread, and the thread portion height of the external thread portion (2) is set with a right-hand thread on the shaft portion (1) that is only adjacent to the head (3). It is possible to form a retaining screw (2a) lower than the above and smaller than the pitch of the outer thread (2). As a result, the fastened wood screws 12 can be prevented from loosening, and the head 3 of the wood screws 12 can be prevented from projecting from the surface of the plywood 6 for flooring or from ringing at every walking.
Further, by forming the drill blade tip 5 at the tip of the external thread 2 of the wood screw 12, it is possible to prevent the beam 7 from being cracked when the wood screw is fastened.

さらに上記いずれかの木ネジを用いて締結した床用合板と梁等との床締結構造は、耐震性を有し地震等の際に床用合板６と梁７との間に相対移動が生じても木ネジ12が折れることがなく、木ネジ12の変形状態においても床用合板６と梁７との締結構造を保持し得る。   Further, the floor fastening structure of the floor plywood fastened with any of the above wood screws and the beam has earthquake resistance, and relative movement occurs between the floor plywood 6 and the beam 7 in the event of an earthquake or the like. However, the wood screw 12 is not broken, and the fastening structure of the floor plywood 6 and the beam 7 can be maintained even when the wood screw 12 is deformed.

次に、図面に基づいて本発明の実施の形態につき説明する。
図１は本発明の木ネジ12を用いた床構造の要部縦断面図であり、図２は地震等により床用合板６と梁７との間に相対移動が生じたときの木ネジ12の変形状態を示すものであり、図３は床用合板６と梁７等との締結構造を示す斜視略図である。また、図４は本発明に用いる木ネジ12の詳細を示し、（Ａ）はその正面図、（Ｂ）は平面図、（Ｃ）は（Ａ）のＣ−Ｃ断面図、（Ｄ）は（Ａ）のＤ−Ｄ矢視断面図、（Ｅ）は頭部３の縦断面図であって（Ｄ）のＥ−Ｅ矢視断面図である。
本発明の木ネジ12が使われる床用合板は、主として板厚が２４mm，２８mm，３０mm，３５mmを対象とし、床材として用いる場合には従来の根太を不要とする。そしてこの床用合板が、梁や桁、胴差しに直接、本木ネジ12により締結固定されるものである。 Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of an essential part of a floor structure using a wood screw 12 of the present invention, and FIG. 2 is a wood screw 12 when a relative movement occurs between a floor plywood 6 and a beam 7 due to an earthquake or the like. FIG. 3 is a schematic perspective view showing a fastening structure between the floor plywood 6 and the beam 7 and the like. 4 shows details of the wood screw 12 used in the present invention, (A) is a front view thereof, (B) is a plan view, (C) is a cross-sectional view taken along the line CC in (A), and (D) is (A) DD sectional drawing, (E) is a longitudinal cross-sectional view of the head 3, Comprising: It is the EE arrow sectional drawing of (D).
The plywood for floors in which the wood screws 12 of the present invention are used mainly targets plate thicknesses of 24 mm, 28 mm, 30 mm, and 35 mm, and does not require the conventional joists when used as flooring. The floor plywood is fastened and fixed directly to the beams, girders, and torso by the main wood screws 12.

次に、本発明の木ネジ12は微量のボロンを含む低炭素鋼またはマンガン鋼あるいはシリコンキルド鋼よりなる鋼線材を用い、転造加工によりその軸部１の先端部に右ネジの外ネジ部２が形成される。この木ネジの基材として低炭素鋼またはマンガン鋼を用いる場合には、重量で炭素が0.3 ％以下（好ましくは0.15〜0.28％）のものであり、ボロンが0.0005〜0.003 ％（好ましくは0.0009〜0.0015％）であり、マンガンが0.5 ％〜1.2 ％である。 ボロンの微量添加は、木ネジの焼き入れ性を向上させる。その量が0.0005％未満では焼き入れ性の向上が望めず、0.003 ％を越えると脆くなる。このとき炭素を0.3 ％以下含む低炭素鋼の基材を用いることにより、木ネジのねばりを強くし、容易に破断しないようにする。また所定量（0.5 ％〜1.2 ％）のマンガンを含むことにより木ネジの剪断強度を強くする。   Next, the wood screw 12 of the present invention uses a steel wire made of low carbon steel, manganese steel, or silicon killed steel containing a small amount of boron, and an outer thread portion of a right-hand thread is formed at the tip of the shaft portion 1 by rolling. 2 is formed. When low carbon steel or manganese steel is used as the base material of the wood screw, the carbon is 0.3% or less (preferably 0.15 to 0.28%) by weight, and boron is 0.0005 to 0.003% (preferably 0.0009 to 0.0015%) and manganese is 0.5% to 1.2%. Addition of a small amount of boron improves the hardenability of wood screws. If the amount is less than 0.0005%, improvement in hardenability cannot be expected, and if it exceeds 0.003%, it becomes brittle. At this time, by using a low carbon steel base material containing 0.3% or less of carbon, the sticking of the wood screw is strengthened so that it is not easily broken. Moreover, the shear strength of a wood screw is strengthened by containing a predetermined amount (0.5% to 1.2%) of manganese.

このような鋼線材を用い、転造加工によりその軸部１の先端部に右ネジの外ネジ部２が形成されると共に、後端に皿状の頭部３が形成される。さらに、その頭部３に隣接した部分のみの軸部１の外周に、抜け止め用小ネジ部2aが形成されている。この小ネジ部２ａのネジ山の高さおよびピッチが、軸部の先端部側に形成された前記外ネジ部２のそれらより小さい。
転造加工に次いで、浸炭、焼き入れ、焼き戻が行われる。それらの加工により木ネジは、その表面のビッカース硬度を 550〜650 ＨＶ、核心のロックウエルＣスケール硬度を28〜44ＨＲＣ程度にする。すると木ネジは、床用合板６、梁７等に螺着締結が容易で、剪断強度及び、ねばりの強いものとなる。 Using such a steel wire rod, a right-handed external thread 2 is formed at the tip of the shaft 1 by rolling, and a dish-shaped head 3 is formed at the rear end. Further, a retaining screw 2a is formed on the outer periphery of the shaft 1 only at the portion adjacent to the head 3. The screw thread height and pitch of the small screw portion 2a are smaller than those of the external screw portion 2 formed on the tip end side of the shaft portion.
Following the rolling process, carburizing, quenching, and tempering are performed. With these processing, the wood screw has a surface Vickers hardness of 550 to 650 HV and a core Rockwell C scale hardness of about 28 to 44 HRC. Then, the wood screw can be easily screwed to the floor plywood 6, the beam 7, etc., and has a high shear strength and stickiness.

なお、頭部２の近傍の小ネジ部２ａは、径年変化により床用合板６の板厚が僅かに縮小しても、木ネジの頭部３が床用合板７の表面から僅かに突出することを防止するものである。即ち、この小ネジ部２ａが合板に螺着して、頭部近傍と合板とが一体化することにより、頭部が合板の表面から抜け出ることを防止する。この小ネジ部２ａのピッチは、一例として１mm〜２mmであり、溝深さは0.2 〜0.5mm 程度とすることができる。これに対して、軸部１の先端側の外ネジ部２のピッチは、それより充分大で一例として2.5 〜４mmであり、溝深さは0.5 〜0.9mm 程度とすることができる。   The small screw portion 2a in the vicinity of the head 2 is slightly protruded from the surface of the floor plywood 7 even if the thickness of the floor plywood 6 is slightly reduced due to a change in diameter. It is to prevent that. That is, the small screw portion 2a is screwed to the plywood so that the vicinity of the head and the plywood are integrated, thereby preventing the head from coming off from the surface of the plywood. As an example, the pitch of the small screw portions 2a is 1 mm to 2 mm, and the groove depth can be about 0.2 to 0.5 mm. On the other hand, the pitch of the external thread portion 2 on the distal end side of the shaft portion 1 is sufficiently larger than that, for example, 2.5 to 4 mm, and the groove depth can be about 0.5 to 0.9 mm.

頭部３はその端面に薄いフランジ部８が配置されている。このフランジ部８の厚みは１mm以下が好ましい。また、頭部３の下面側は逆向きの円錐台形状に形成され、放射状のフレキ刃13が定間隔に突設されている。なお、フランジ部８およびフレキ刃13は、これを省略することもできる。
次に、外ネジ部２にはその螺旋状に沿って定間隔にノッチ９が形成されている。また、頭部３の上面には螺着工具嵌着用凹部11が設けられている。さらに、木ネジ先端には、ドリル刃先部５が形成されている。
このように転造加工により形成された木ネジ12は、その後に、浸炭、焼戻処理がされる。それにより曲げモーメントが加わったとき、４５°〜９０°に軸部１で折り曲げられても剪断しない粘りを有する。 The head 3 is provided with a thin flange portion 8 on its end face. The thickness of the flange portion 8 is preferably 1 mm or less. Further, the lower surface side of the head 3 is formed in a reverse truncated cone shape, and radial flexible blades 13 project at regular intervals. Note that the flange portion 8 and the flexible blade 13 can be omitted.
Next, notches 9 are formed in the outer screw portion 2 at regular intervals along the spiral shape. Further, a screwing tool fitting recess 11 is provided on the upper surface of the head 3. Further, a drill blade tip 5 is formed at the tip of the wood screw.
The wood screws 12 thus formed by the rolling process are subsequently subjected to carburizing and tempering. Thus, when a bending moment is applied, it has a stickiness that does not shear even when bent at 45 to 90 ° by the shaft portion 1.

また、この木ネジ12は電動ドライバーにより床用合板６の表面に打ち込まれる。即ち、図１及び図３に示す如く床用合板６を梁７等に載置し、床用合板６の上面側から木ネジ12を電動ドライバーにより打ち込む。木ネジ12の先端にはドリル刃先部５が形成され、それによって床用合板６及び梁７に孔を穿設しつつ木ネジ12が床用合板６及び梁７内に進入する。そして頭部３のフレキ刃13によって床用合板６のネジ孔の開口縁が削り取られ、頭部３の上端と床用合板６の上面とが面一または頭部３の方が僅かに凹む程度まで打ち込まれる。このとき木ネジ先端のドリル刃先部５及び外ネジ部２のノッチ９は、床用合板６及び梁７を穿設し木ネジ12を円滑に螺着締結させる。   The wood screws 12 are driven into the surface of the floor plywood 6 by an electric screwdriver. That is, as shown in FIGS. 1 and 3, the floor plywood 6 is placed on the beam 7 or the like, and the wood screw 12 is driven from the upper surface side of the floor plywood 6 by an electric screwdriver. A drill cutting edge 5 is formed at the tip of the wood screw 12, whereby the wood screw 12 enters the floor plywood 6 and the beam 7 while making holes in the floor plywood 6 and the beam 7. The opening edge of the screw hole of the floor plywood 6 is scraped off by the flexible blade 13 of the head 3 so that the upper end of the head 3 is flush with the upper surface of the floor plywood 6 or the head 3 is slightly recessed. It is driven to. At this time, the drill blade tip 5 at the tip of the wood screw and the notch 9 of the external screw portion 2 pierce the floor plywood 6 and the beam 7 to smoothly screw and fasten the wood screw 12.

床用合板６の周縁及び各梁７上には多数の木ネジ12が螺着締結され、本締結構造を完成する。このとき木ネジ12の外ネジ部２はその全長に渡って、梁７に完全に進入し、梁７と床用合板６との境目には木ネジ12の軸部１が位置する。また、頭部３に隣接する小ネジ部２ａは床用合板６に螺着して頭部３およびその近傍と、その床用合板６とを一体化する。それにより頭部３が床用合板６の表面から突出することを防止できる。なお、木ネジ先端のドリル刃先部５及び外ネジ部２のノッチ９は省略することができる。ドリル刃先部５を省略する場合には、その部分は通常の木ネジと同様のとがった先部が形成される。
このようにしてなる本発明の木ネジ12の締結構造は、実験によれば、その締結力、即ち引き抜き強度が従来の床用合板の釘Ｎ７５（耐震対策強度を有するもの）よりも５倍強く且つ、剪断強度が２倍強く、さらに軸部１の粘り強度が高くなっていた。 A number of wood screws 12 are screwed and fastened on the periphery of the floor plywood 6 and on each beam 7 to complete this fastening structure. At this time, the outer screw portion 2 of the wood screw 12 completely enters the beam 7 over its entire length, and the shaft portion 1 of the wood screw 12 is located at the boundary between the beam 7 and the floor plywood 6. Further, the small screw portion 2 a adjacent to the head 3 is screwed to the floor plywood 6 to integrate the head 3 and the vicinity thereof with the floor plywood 6. Thereby, it can prevent that the head 3 protrudes from the surface of the plywood 6 for floors. The drill blade tip 5 at the tip of the wood screw and the notch 9 in the external screw 2 can be omitted. When the drill blade tip 5 is omitted, a sharp tip similar to a normal wood screw is formed in that portion.
According to the experiment, the fastening structure of the wood screw 12 of the present invention thus formed is 5 times stronger than the conventional floor plywood nail N75 (having anti-seismic strength). In addition, the shear strength was twice as strong, and the sticking strength of the shaft portion 1 was higher.

なお、木ネジ12の全長は一例として２４mm，２８mmその他を造ることができる。次に、軸部１の中間部に、滑り防止用つや消し部14が設けられている。
これは連続的に多数の木ネジを打ち込むため、予め多数の木ネジを電動ドリルのカセットに収納しておく際に、木ネジの不用意な移動を防止するものである。即ち、これは木ネジをカセットの帯材に装着したときに、木ネジが軸線方向に移動することを防止する滑り止めの役をする。
また、ローレット加工部４は緩み止め作用をし、木ネジ12の締結後にそれが締結方向と逆方向に回転することを防止する。
次に、実験によれば梁７に対し床用合板６を水平方向に外力を加えて移動した実験では、木ネジ12は図２の如く変形しても、それが破断することはなかった。 For example, the total length of the wood screw 12 can be 24 mm, 28 mm, or the like. Next, an anti-slip matting portion 14 is provided at an intermediate portion of the shaft portion 1.
In this case, since a large number of wood screws are driven continuously, the wood screws are prevented from inadvertently moving when the wood screws are previously stored in the cassette of the electric drill. In other words, this serves as a slip stopper that prevents the wood screw from moving in the axial direction when the wood screw is attached to the strip of the cassette.
Further, the knurled portion 4 acts to prevent loosening and prevents the wood screw 12 from rotating in the direction opposite to the fastening direction after the wood screw 12 is fastened.
Next, according to the experiment, in the experiment in which the floor plywood 6 was moved to the beam 7 by applying an external force in the horizontal direction, the wood screw 12 did not break even when deformed as shown in FIG.

作用Action

本発明の木ネジ12においてそのフレキ刃13は、床用合板６の表面にドリル刃先部５で穿設された孔の縁部を皿状に削り取り、その頭部３のフランジ部８の上面が床用合板６の上面と面一になるようにするためのものである。
また、木ネジ先端のドリル刃先部５は、特に梁７の割れを防止すると共に、その木割れによる締結強度の激減を防止するものである。
さらに平面四角の螺着工具嵌着用凹部11は、床用合板への木ネジ螺着時の施工性を高めるものである。 In the wood screw 12 of the present invention, the flexible blade 13 scrapes off the edge of the hole drilled by the drill blade tip 5 on the surface of the plywood 6 for flooring, and the upper surface of the flange portion 8 of the head 3 is formed. This is intended to be flush with the upper surface of the floor plywood 6.
Further, the drill blade tip portion 5 at the tip of the wood screw particularly prevents the beam 7 from cracking and prevents a drastic decrease in fastening strength due to the wood crack.
Further, the flat rectangular screwing tool fitting recess 11 enhances workability when screwing wood screws into the floor plywood.

滑り防止用つや消し部14は、既に述べたように連動式スクリュードライバーを搭載したビス打ち機及びエアー式ビス打ち機における多数の木ネジの搭載を可能とするものである。即ち、樹脂及びワイヤーのロール連結方式に適合できるようにしたものである。これは、多数の木ネジを装着する帯状樹脂の孔に夫々の木ネジを装着したとき、装着状態で軸方向に移動しないように滑りを防止して、木ネジを孔内に保持させるものである。この滑り防止用つや消し部14は、中間部に存在することにより、従来の各種ビス打ち機であって帯状の各種装着テープでも多数の本木ネジを装着することができるものとする。
なお、ローレット加工部４を外ネジ部２の後端に連続させた理由は、その外ネジ部２が確実に梁７内に入り込み、緩み止め効果を発揮できるからである。 As described above, the anti-slip matting portion 14 enables a large number of wood screws to be mounted in a screw driving machine equipped with an interlocking screw driver and an air screw driving machine. That is, it can adapt to the roll connection system of resin and wire. This is to hold the wood screw in the hole by preventing slipping so that it does not move in the axial direction in the attached state when each wood screw is attached to the hole of the strip-like resin to which many wood screws are attached. is there. Since the anti-slip matting portion 14 exists in the middle portion, it is assumed that a large number of genuine wood screws can be mounted by various conventional screw driving machines and various belt-shaped mounting tapes.
The reason that the knurled portion 4 is made continuous with the rear end of the outer screw portion 2 is that the outer screw portion 2 surely enters the beam 7 and can exert a loosening prevention effect.

本発明の木ネジ12を用いた床用合板６と梁７との締結構造を示す説明図。Explanatory drawing which shows the fastening structure of the floor plywood 6 and the beam 7 using the wood screw 12 of this invention. 床用合板６と梁７との間に相対移動が生じたときの木ネジ12の状態を示す説明図。Explanatory drawing which shows the state of the wood screw 12 when relative movement arises between the plywood 6 for floors, and the beam 7. FIG. 本発明の床用合板６と梁７等との締結構造を示す全体的斜視図。The whole perspective view which shows the fastening structure of the plywood 6 for floors of this invention, the beam 7, etc. FIG. 本発明の木ネジ12の説明図であって、（Ａ）はその正面図、（Ｂ）は平面図、（Ｃ）は（Ａ）のＣ−Ｃ断面図、（Ｄ）は（Ａ）のＤ−Ｄ矢視断面図、（Ｅ）は頭部３の縦断面図であって（Ｄ）のＥ−Ｅ矢視断面図。It is explanatory drawing of the wood screw 12 of this invention, (A) is the front view, (B) is a top view, (C) is CC sectional drawing of (A), (D) is (A). DD arrow sectional drawing, (E) is a longitudinal cross-sectional view of the head 3, Comprising: The EE arrow sectional drawing of (D).

符号の説明Explanation of symbols

１ 軸部
２ 外ネジ部
２ａ 小ネジ部
３ 頭部
４ ローレット加工部
５ ドリル刃先部
６ 床用合板 DESCRIPTION OF SYMBOLS 1 Shaft part 2 External thread part 2a Small screw part 3 Head 4 Knurled part 5 Drill blade part 6 Floor plywood

７ 梁
８ フランジ部
９ ノッチ
11 螺着工具嵌着用凹部
12 木ネジ
13 フレキ刃
14 滑り防止用つや消し部
7 Beam 8 Flange 9 Notch
11 Recessed part for screw tool insertion
12 Wood screws
13 Flexible blade
14 Matte for anti-slip

Claims (6)

ボロンを含む鋼線材を用い、転造加工によりその軸部(1) の先端部側に外ネジ部(2) が形成されると共に、後端に皿状の頭部(3) が形成され、
その転造加工の後に、浸炭・焼戻処理により表面のビッカース硬度が 550〜650 ＨＶ、核心のロックウエルＣスケール硬度が28〜44ＨＲＣにしてなる床用合板用の木ネジ。 Using a steel wire rod containing boron, an outer thread portion (2) is formed on the tip end side of the shaft portion (1) by rolling, and a dish-shaped head portion (3) is formed on the rear end.
A wood screw for plywood for floors that has a surface Vickers hardness of 550 to 650 HV and a core Rockwell C scale hardness of 28 to 44 HRC by carburizing and tempering after the rolling process. 請求項１において、
低炭素鋼の基材に、ボロンを0.0005〜0.003 重量％含む床用合板用の木ネジ。 In claim 1,
Wood screws for flooring plywood containing 0.0005 to 0.003 wt% boron in a low carbon steel base material. 請求項１において、
マンガン鋼の基材またはシリコンキルド鋼の基材に、ボロンを0.0005〜0.003 重量％含む床用合板用の木ネジ。 In claim 1,
Wood screws for flooring plywood containing 0.0005 to 0.003 wt% boron in a manganese steel base or silicon killed steel base. 請求項１〜請求項３のいずれかにおいて、
前記外ネジ部(2) が右ネジに形成され、前記頭部(3) に隣接した部分のみの軸部(1) に右ネジで、前記外ネジ部(2) のネジ山高さより低く且つその外ネジ部(2) のピッチより小なる抜け止め用小ネジ部(2a)が形成された床用合板用の木ネジ。 In any one of Claims 1-3,
The outer thread portion (2) is formed as a right-hand thread, and the right-hand thread is provided on the shaft portion (1) adjacent to the head portion (3), which is lower than the thread height of the outer thread portion (2) and Wood screw for flooring plywood, in which a retaining screw (2a) smaller than the pitch of the outer screw (2) is formed. 請求項１〜請求項４のいずれかにおいて、
前記外ネジ部(2) の先端にドリル刃先部(5) が形成された床用合板用の木ネジ。 In any one of Claims 1-4,
Wood screw for plywood for floors in which a drill cutting edge part (5) is formed at the tip of the external thread part (2). 請求項１〜請求項５のいずれかの木ネジが用いられ、
床用合板(6) と、梁(7) または桁あるいは胴差し（以下梁等という）とが締結接合され、その外ネジ部(2) の全てが梁(7) 等に螺着され、その床用合板(6) と梁(7) 等との境に前記軸部(1) が位置し、前記抜け止め用小ネジ部(2a)が床用合板(6) のみに螺着された床用合板と梁等との床締結構造。
The wood screw according to any one of claims 1 to 5 is used,
The floor plywood (6) and the beam (7) or the girder or the trunk (hereinafter referred to as a beam, etc.) are fastened and joined, and all of the outer threaded parts (2) are screwed to the beam (7), etc. A floor in which the shaft portion (1) is located at the boundary between the floor plywood (6) and the beam (7) and the like, and the retaining screw (2a) is screwed only to the floor plywood (6). Floor fastening structure with plywood and beams.
JP2003320438A 2003-09-11 2003-09-11 Wood screw for plywood for floor and floor fastening construction Pending JP2005090518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006308079A (en) * 2005-03-30 2006-11-09 Sun Wave Ind Co Ltd Wood screw
JP2007170552A (en) * 2005-12-22 2007-07-05 Wakai & Co Ltd Tapping screw
JP2007321798A (en) * 2006-05-30 2007-12-13 Japan Power Fastening Co Ltd Drill screw for wooden material
JP2007327540A (en) * 2006-06-07 2007-12-20 Higashi Nippon Power Fastening Kk Rafter fixing wood screw
JP2012122529A (en) * 2010-12-07 2012-06-28 Mitsui Home Co Ltd Screw and bearing wall
JP2014009536A (en) * 2012-07-02 2014-01-20 Jsp Corp Heat-insulated floor structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006308079A (en) * 2005-03-30 2006-11-09 Sun Wave Ind Co Ltd Wood screw
JP2007170552A (en) * 2005-12-22 2007-07-05 Wakai & Co Ltd Tapping screw
JP4727415B2 (en) * 2005-12-22 2011-07-20 若井産業株式会社 Tapping screw
JP2007321798A (en) * 2006-05-30 2007-12-13 Japan Power Fastening Co Ltd Drill screw for wooden material
JP4684169B2 (en) * 2006-05-30 2011-05-18 日本パワーファスニング株式会社 Drill screw for wood
JP2007327540A (en) * 2006-06-07 2007-12-20 Higashi Nippon Power Fastening Kk Rafter fixing wood screw
JP2012122529A (en) * 2010-12-07 2012-06-28 Mitsui Home Co Ltd Screw and bearing wall
JP2014009536A (en) * 2012-07-02 2014-01-20 Jsp Corp Heat-insulated floor structure

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