JPH08247125A - Drilling tapping screw - Google Patents
Drilling tapping screwInfo
- Publication number
- JPH08247125A JPH08247125A JP7469495A JP7469495A JPH08247125A JP H08247125 A JPH08247125 A JP H08247125A JP 7469495 A JP7469495 A JP 7469495A JP 7469495 A JP7469495 A JP 7469495A JP H08247125 A JPH08247125 A JP H08247125A
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- diameter
- tapping screw
- drilling tapping
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 62
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 49
- 239000007779 soft material Substances 0.000 claims abstract description 28
- 239000007769 metal material Substances 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 description 49
- 239000010959 steel Substances 0.000 description 49
- 239000002023 wood Substances 0.000 description 36
- 239000011120 plywood Substances 0.000 description 29
- 239000000463 material Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- 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
- F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
-
- 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
- F16B25/0031—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 screw being designed to be screwed into different materials, e.g. a layered structure or through metallic and wooden parts
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Connection Of Plates (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ドリリングタッピンね
じに関する。鋼板又はステンレス鋼板等の金属板と、金
属板に対して軟質である木質合板又は石膏ボード等の軟
質材とを強固に接合するためのドリリングタッピンねじ
に用いる。FIELD OF THE INVENTION The present invention relates to a drilling tapping screw. It is used for a drilling tapping screw for firmly joining a metal plate such as a steel plate or a stainless steel plate and a soft material such as a wood plywood or a gypsum board which is soft to the metal plate.
【０００２】[0002]
【従来の技術】従来、図８（ＪＩＳ Ｂ１１２５−１９
９０による。）に示すように、ドリリングタッピンねじ
８は切り刃先３に接続して、平行ねじのねじ部２を備え
ている。このため、図５により説明するように、木材板
９側からドリリングタッピンねじ８の切り刃先３を当て
て、切り刃３ａによる穿孔を開始し、木材板９の部分を
穿孔し、切り刃３ａの尖端が鋼板１０の内面に到達する
と、硬い鋼板１０の部分を穿孔中はドリリングタッピン
ねじ８のねじ部２は回転しても、鋼板１０の穿孔が完了
するまでは、木材板９の部分に対してねじ部２は進行が
停滞する。その結果、ねじ部２とねじ接触している木材
板９は、ねじ部２の回転によりねじ部２の進行方向とは
逆方向に持ち上げられることとなり、木材板９と鋼板１
０とは離間して、両者９、１０の間に間隙１１を生じさ
せ、円滑な穿孔が困難となり、施工性を低下させること
になる。2. Description of the Related Art Conventionally, FIG. 8 (JIS B1125--19)
According to 90. ), The drilling tapping screw 8 is connected to the cutting edge 3 and is provided with a parallel screw thread portion 2. Therefore, as will be described with reference to FIG. 5, the cutting blade tip 3 of the drilling tapping screw 8 is applied from the wood plate 9 side to start piercing by the cutting blade 3a to pierce a portion of the wood plate 9 and the cutting blade 3a When the tip reaches the inner surface of the steel plate 10, even if the threaded portion 2 of the drilling tapping screw 8 rotates while drilling the hard steel plate 10, until the drilling of the steel plate 10 is completed, The screw part 2 stops moving. As a result, the wood plate 9 that is in screw contact with the screw portion 2 is lifted in the direction opposite to the traveling direction of the screw portion 2 by the rotation of the screw portion 2, and the wood plate 9 and the steel plate 1
It is separated from 0, and a gap 11 is generated between the both 9, 10, which makes smooth perforation difficult and reduces workability.
【０００３】かかる木材板９と鋼板１０との間での間隙
１１の発生を防止するため、図６により説明するよう
に、ドリリングタッピンねじ８の先端にリーマ１２を設
けたものが開発されている。リーマ１２は切り刃先３の
上部に設けられ、そのリーマ１２の径（ドリリングタッ
ピンねじの中心軸からリーマ１２の外側先端までの長さ
を指す。）はねじ部２の山より大きいので、ドリリング
タッピンねじ８の切り刃３ａによる穿孔に後続してねじ
部２の山より大きい孔１３を穿孔する。また、リーマ１
２は鋼板１０当たったところで、外れるので、ドリリン
グタッピンねじ８のねじ部２により鋼板１０に適当なサ
イズのねじ孔加工が施され、ドリリングタッピンねじ８
により木材板９と鋼板１０とは接合されることになる。In order to prevent the generation of the gap 11 between the wood plate 9 and the steel plate 10, a drilling tapping screw 8 provided with a reamer 12 at the tip has been developed as described with reference to FIG. . The reamer 12 is provided at the upper part of the cutting edge 3, and the diameter of the reamer 12 (the length from the central axis of the drilling tapping screw to the outer tip of the reamer 12) is larger than that of the thread portion 2. Following the drilling of the screw 8 by the cutting blade 3a, a hole 13 larger than the ridge of the screw portion 2 is drilled. Also, reamer 1
When the steel plate 10 hits the steel plate 10, the steel plate 10 is disengaged. Therefore, the steel plate 10 is processed with a screw hole of an appropriate size by the screw portion 2 of the drilling tapping screw 8, and the drilling tapping screw 8
Thus, the wood plate 9 and the steel plate 10 are joined together.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、リーマ
１２をドリリングタッピンねじ８の先端に設けた方式
は、リーマ１２が木材板９に対してねじ構造による接触
を不能にする過大な孔１３をあけることになるので、木
材板９と鋼板１０との接合部の初期剛性と耐力が低下さ
せることになる。また、リーマ１２が鋼板１０に当たっ
てから外れるまでにかなりの時間がかかり、施工性を低
下させるが、その時間はドリリングタッピンねじの本数
が多くなると決して無視できない時間となる。また、リ
ーマ１２が鋼板１０に当たっても外れない場合があり、
鋼板１０にも過大孔があき、接合力を失うことになる。
また、逆に、木材板９が比較的硬い場合には鋼板１０に
当たる前に、リーマ１２が外れることが起こり、図５で
述べたと同じく、木材板９と鋼板１０とが相互に離れ
て、材料９、１０間に間隙ができることがある。これら
の点が、リーマを設ける方式を採用する場合の問題点と
なる。However, in the method in which the reamer 12 is provided at the tip of the drilling tapping screw 8, the reamer 12 is provided with an excessively large hole 13 which makes it impossible to contact the wood plate 9 by the screw structure. Therefore, the initial rigidity and yield strength of the joint between the wood plate 9 and the steel plate 10 are reduced. Further, it takes a considerable time from the time when the reamer 12 hits the steel plate 10 to the time when the reamer 12 comes off, which lowers the workability, but the time becomes a time that cannot be ignored when the number of drilling tapping screws increases. Further, even if the reamer 12 hits the steel plate 10, it may not come off,
The steel plate 10 also has excessive holes and loses the joining force.
On the contrary, when the wood plate 9 is relatively hard, the reamer 12 may come off before hitting the steel plate 10, and the wood plate 9 and the steel plate 10 are separated from each other as described in FIG. There may be a gap between 9 and 10. These points become problems when the method of providing the reamer is adopted.
【０００５】本発明は、上述の従来技術の問題点に鑑み
てなされたものであり、その目的とするところは、軟質
板と金属板間での間隙の発生を解消し、軟質板と金属板
との接合部での初期剛性と耐力が高く、また施工性が優
れたドリリングタッピンねじを提供しようとするもので
ある。The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to eliminate the generation of a gap between a soft plate and a metal plate, The present invention intends to provide a drilling tapping screw which has high initial rigidity and proof stress at the joint portion with and has excellent workability.
【０００６】[0006]
【課題を解決するための手段】本発明におけるドリリン
グタッピンねじは、切り刃を設けた切り刃先と、ねじ部
との間に、切り刃による金属材の穿孔時に、既に穿孔さ
れた軟質材の部分に対して空回り可能な径と長さを有す
るねじ無し部を設けたことにより構成される。また、本
発明におけるドリリングタッピンねじは、切り刃を設け
た切り刃先と、ねじ部との間にねじ無し部を設け、ねじ
無し部の径を、切り刃先の長径（真円の場合は、直径で
ある。）と等しいか、もしくは切り刃先の長径より小さ
くし、またねじ無し部と切り刃先の平行部の合計長さを
穿孔部位における金属材と軟質材の合計厚さに対して
０．８〜１．５倍としたことにより構成される。A drilling tapping screw according to the present invention is a portion of a soft material that has already been drilled when a metal material is drilled by a cutting blade between a cutting edge provided with a cutting blade and a thread portion. It is constituted by providing a non-threaded portion having a diameter and a length that allow idling. Further, the drilling tapping screw in the present invention, a cutting edge provided with a cutting blade, and a screw-free portion is provided between the screw portion, the diameter of the screw-free portion, the long diameter of the cutting edge (in the case of a perfect circle, the diameter Is equal to or less than the major axis of the cutting edge, and the total length of the unthreaded portion and the parallel portion of the cutting edge is 0.8 with respect to the total thickness of the metal material and the soft material at the drilling site. .About.1.5 times the size.
【０００７】本発明のドリリングタッピンねじによる接
合の対象となる材料は、鋼板、ステンレス鋼板等の金属
材と、金属板より軟質の木質合板、石膏ボード等の軟質
材である。従来、図７に示すように、ドリリングタッピ
ンねじ８は、頭部１４と、ねじ部２と、切り刃先３とを
基本的な構成要素とする。これに対して、本発明のドリ
リングタッピンねじ１においては、図１に示すように、
切り刃先３（図１でｙの部分）と、ねじ部２（図１でａ
の部分で、不完全ねじ部長さを含む。）との間に、ねじ
無し部４（図１でｂの部分）を設ける。ねじ無し部４
は、切り刃３ａにより金属材の穿孔を開始し、穿孔完了
前におけるねじ部２の進行の停滞に伴い、ねじ部２の回
転によって軟質板が浮上することを防止するためのもの
である。したがって、ねじ無し部４は、切り刃３ａによ
る金属材の穿孔時に、既に穿孔された軟質材の部分に対
して空回り可能な径と長さを有する必要がある。Materials to be joined by the drilling tapping screw of the present invention are metal materials such as steel plates and stainless steel plates, and soft materials such as wood plywood and gypsum board which are softer than the metal plates. Conventionally, as shown in FIG. 7, a drilling tapping screw 8 has a head 14, a screw portion 2, and a cutting edge 3 as basic components. On the other hand, in the drilling tapping screw 1 of the present invention, as shown in FIG.
The cutting edge 3 (the portion y in FIG. 1) and the threaded portion 2 (a in FIG. 1)
Including the incomplete thread length. ) And a non-threaded portion 4 (portion b in FIG. 1). Screwless part 4
Is for preventing the soft plate from floating due to the rotation of the screw part 2 due to the start of the perforation of the metal material by the cutting blade 3a and the progress of the screw part 2 before the completion of the perforation. Therefore, the unthreaded portion 4 needs to have a diameter and a length that allow idle rotation with respect to the portion of the soft material that has already been drilled when the cutting blade 3a drills the metal material.
【０００８】具体的には、ねじ無し部４の径について
は、切り刃先３の長径（真円の場合は、直径である。）
と等しいか、もしくは切り刃先３の長径より小さくする
ことが好ましい。ここで、ねじ無し部４の径は、ねじ無
し部４の断面の最も長い代表的な長さであり、円の場合
には直径であり、正方形の場合には対角線の長さを指
す。ねじ無し部４の径は、切り刃３ａによる金属材の穿
孔時に、ねじ無し部４を既に穿孔された軟質材の部分に
対して空回りさせるためには、切り刃先３の長径より小
さくし、ねじ無し部４を軟質材に対して自由な遊合の状
態にすればよい。しかしながら、ここで、ねじ無し部４
の径が切り刃先３の長径と等しい場合のあることを示し
たのは、寸法上はタイトな嵌合状態であっても、ねじ無
し部４を既に穿孔された軟質材の部分に対して空回りさ
せることができ、摩擦熱による燃えることもないような
態様を本発明の範囲に包含するためである。したがっ
て、上記において、ねじ無し部４の径が切り刃先３の長
径と等しいとは、切り刃先３の長径とほぼ等しい場合を
含む意味に使用する。ねじ無し部４の径は、穿孔時のト
ルクを伝達し、変形を生じないということから、設計上
定めればよいが、あまり細過ぎると強度が弱くなるの
で、円の場合ねじ部の谷径を基準とすると谷径の０．７
倍以上が目安となる。Specifically, the diameter of the threadless portion 4 is the major axis of the cutting edge 3 (in the case of a perfect circle, it is the diameter).
Or smaller than the major axis of the cutting edge 3. Here, the diameter of the unscrewed portion 4 is the longest typical length of the cross section of the unscrewed portion 4, the diameter in the case of a circle, and the length of the diagonal line in the case of a square. The diameter of the screwless portion 4 is smaller than the major diameter of the cutting edge 3 in order to allow the screwless portion 4 to idle with respect to a portion of the soft material that has already been drilled when the metal material is punched by the cutting blade 3a. It suffices to set the blank portion 4 in a freely playable state with respect to the soft material. However, here, the unthreaded portion 4
It has been shown that there is a case where the diameter is equal to the major axis of the cutting edge 3 even if the dimensionally tight fitting state causes the screwless portion 4 to idle with respect to the portion of the soft material already perforated. This is for the purpose of including in the scope of the present invention an embodiment that can be performed and is not burned by frictional heat. Therefore, in the above description, the case where the diameter of the threadless portion 4 is equal to the major axis of the cutting edge 3 includes the case where it is approximately equal to the major axis of the cutting edge 3. The diameter of the unthreaded portion 4 can be determined by design because it transmits torque during drilling and does not cause deformation, but if it is too thin, the strength will weaken. Based on, the valley diameter is 0.7
A guideline is more than double.
【０００９】次に、ねじ無し部の長さについて説明す
る。本発明において、ドリリングタッピンねじのねじ無
し部の長さは、切り刃による金属材の穿孔時に、既に穿
孔された軟質材の部分に対して空回り可能な長さとす
る。ドリリングタッピンねじ１の切り刃先３は、一般に
材料を穿孔するための尖った切り刃である尖端部（図１
でｄの部分）と筒状の側面にある切り刃の平行部（図１
でｃの部分）とを備える。ドリリングタッピンねじ１
は、最初に軟質材を、続いて金属材を穿孔し、切り刃先
３の尖端部が金属材を貫通し、切り刃先３の平行部の先
端が軟質材と反対側の金属材の表面に到達したとき、穿
孔を完了することになる。したがって、穿孔の完了ま
で、ねじ部２の先端が軟質材の表面と干渉しないために
は、ねじ無し部４と切り刃先３の平行部（図１でｃの部
分）の合計長さは金属材と軟質材の合計厚さに対して等
しいか、長くあればよい。しかしながら、ドリリングタ
ッピンねじ１の切り刃先３の尖端部による穿孔が完了す
る直前において、僅かにねじ部が軟質材にかかっても、
軟質材と金属材とを引き離す力がそれほど強くなく、ね
じ無し部４の存在によって、軟質板と金属板とは離間せ
ず、間隙を生ずることがない場合があり、本発明はかか
る態様をねじ無し部が軟質材の部分に対して空回りとい
う意味に包含する必要がある。一方、ねじ無し部３と切
り刃先３の平行部（図１でｃの部分）の合計長さは金属
材と軟質材の合計厚さより長くする場合、あまり長くす
ると、それだけドリリングタッピンねじのコストを高く
することになる。かかる理由から、ねじ無し部と切り刃
先の平行部の合計長さは、穿孔部位における金属材と軟
質材の合計厚さに対して０．８〜１．５倍とすることが
好ましい。Next, the length of the unthreaded portion will be described. In the present invention, the length of the non-threaded portion of the drilling tapping screw is set to a length that allows free rotation of the portion of the soft material that has already been drilled when the metal material is punched by the cutting blade. The cutting edge 3 of the drilling tapping screw 1 is generally a sharp cutting edge for drilling material (see FIG. 1).
(Portion d in Fig. 1) and the parallel part of the cutting blade on the cylindrical side surface (Fig. 1).
Part c)). Drilling tapping screw 1
Is made by first perforating a soft material, then a metal material, the tip of the cutting edge 3 penetrates the metal material, and the tip of the parallel part of the cutting edge 3 reaches the surface of the metal material opposite to the soft material. When done, the perforation will be completed. Therefore, in order to prevent the tip of the threaded portion 2 from interfering with the surface of the soft material until the completion of drilling, the total length of the parallel portion (the portion c in FIG. 1) of the unthreaded portion 4 and the cutting edge 3 is the metal material. And the total thickness of the soft material should be equal or longer. However, immediately before the drilling by the tip of the cutting edge 3 of the drilling tapping screw 1 is completed, even if the threaded portion slightly touches the soft material,
The force for separating the soft material and the metal material is not so strong, and due to the existence of the screwless portion 4, the soft plate and the metal plate may not be separated from each other and a gap may not be generated. It is necessary to include the non-existence part in the sense that it is idle with respect to the soft material part. On the other hand, if the total length of the unthreaded portion 3 and the parallel portion of the cutting edge 3 (portion c in FIG. 1) is made longer than the total thickness of the metal material and the soft material, the cost of the drilling tapping screw is increased accordingly. It will be higher. For this reason, the total length of the unthreaded portion and the parallel portion of the cutting edge is preferably 0.8 to 1.5 times the total thickness of the metal material and the soft material at the punched portion.
【００１０】ここで、図２により、本発明のドリリング
タッピンねじ１の切り刃先３により鋼板６を穿孔したと
きの、ドリリングタッピンねじ１と木質合板５、鋼板６
との状態を示す。切り刃先３の平行部（図１におけるｃ
の部分に相当する。）の先端が木質合板５と反対側の鋼
板６の表面に到達しており、この時点で鋼板６の穿孔は
完了すると考えることができる。また、図３により、本
発明のドリリングタッピンねじ１により、木質合板５を
穿孔し（イ）、続いて鋼板６を穿孔し（ロ）、ドリリン
グタッピンねじ１により木質合板５と鋼板６を接合した
状態（ハ）を示す。ねじ無し部３を設けることによっ
て、木質合板５と鋼板６とは離間せず、両者間に間隙は
全く発生しない。また、図４は、平板の木質合板５と３
本の溝型の鋼材７に取り付ける場合を示し、ドリリング
タッピンねじ１により木質合板５と鋼材７のフランジ７
ａとを接合する。Here, referring to FIG. 2, when the steel plate 6 is perforated by the cutting edge 3 of the drilling tapping screw 1 of the present invention, the drilling tapping screw 1, the wood plywood 5, and the steel plate 6 are provided.
And shows the state. Parallel part of the cutting edge 3 (c in FIG. 1
Corresponds to the part. ) Has reached the surface of the steel plate 6 on the side opposite to the wooden plywood 5, and it can be considered that the perforation of the steel plate 6 is completed at this point. Further, referring to FIG. 3, the wooden plywood 5 is perforated by the drilling tapping screw 1 of the present invention (a), then the steel plate 6 is perforated (b), and the wooden plywood 5 and the steel plate 6 are joined by the drilling tapping screw 1. The state (c) is shown. By providing the screwless portion 3, the wooden plywood 5 and the steel plate 6 are not separated from each other, and no gap is generated between them. Further, FIG. 4 shows a flat wood plywood 5 and 3
It shows the case where it is attached to two groove type steel materials 7, and the wood-based plywood 5 and the flange 7 of the steel material 7 by the drilling tapping screw 1.
Join a.
【００１１】[0011]
【作用】本発明において、ドリリングタッピンねじは切
り刃を設けた切り刃先と、ねじ部との間に、切り刃によ
る金属材の穿孔時に、既に穿孔された軟質材の部分に対
して空回り可能な径と長さを有するねじ無し部を設けた
ことにより、切り刃先が金属板を穿孔している間はねじ
無し部が軟質材の厚み方向のすべての部分、或いは殆ど
すべての部分に対して空回りするので、ねじ部により軟
質板を持ち上げ、軟質板と金属板間に間隙を生ずること
はない。In the present invention, the drilling tapping screw can idle between the cutting edge provided with the cutting edge and the thread portion when the metal material is punched by the cutting edge with respect to the portion of the soft material that has already been punched. By providing a threadless part with a diameter and length, the threadless part idles against all parts in the thickness direction of the soft material or almost all parts while the cutting edge is punching the metal plate. Therefore, the soft plate is lifted by the screw portion and no gap is generated between the soft plate and the metal plate.
【００１２】[0012]
【実施例】本発明の実施例を図１を参照して説明する。 （実施例１）木質合板（厚み９．０ｍｍ）と鋼板（厚み
０．８ｍｍ）とを次のドリリングタッピンねじにより接
合した。 （１）ねじ部（図１でａの部分）１１．２ｍｍ （２）ねじ無し部（図１でｂの部分）５ｍｍ （３）切り刃の平行部（図１でｃの部分）５ｍｍ （４）切り刃の尖端部（図１でｄの部分）２ｍｍ （５）切り刃先（図１でｙの部分）７ｍｍ （６）ねじ無し部の径（図１でｄ1 の部分）３．５ｍｍ
（直径） （７）切り刃先の長径（図１でｄ2 の部分）３．７ｍｍ
（直径） （８）ねじ部の谷径、山径はそれぞれ３．５ｍｍ、４．
８ｍｍ （９）頭部（図１で符号１４）の軸方向の長さ２．８ｍ
ｍ かかるドリリングタッピンねじにより、上記の木質合板
（厚み９．０ｍｍ）と鋼板（厚み０．８ｍｍ）とを接合
する作業を行い、円滑に穿孔を完了し、木質合板と鋼板
との間には全く離間がなく、間隙は発生しなかった。ま
た、木質合板と鋼板との複合材料につき、木質合板と鋼
板との接合面の方向に引張力を付与して行なう試験にお
いて、従来のリーマ方式のものと比較して、最大耐力で
約１５％、初期剛性で２倍優れていることが認められ
た。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. (Example 1) A wood plywood (thickness 9.0 mm) and a steel plate (thickness 0.8 mm) were joined by the following drilling tapping screws. (1) Threaded portion (portion a in FIG. 1) 11.2 mm (2) Unscrewed portion (portion b in FIG. 1) 5 mm (3) Parallel portion of cutting blade (portion c in FIG. 1) 5 mm (4 ) Tip of cutting blade (portion d in FIG. 1) 2 mm (5) Cutting edge (portion y in FIG. 1) 7 mm (6) Diameter of screwless portion (portion d 1 in FIG. 1) 3.5 mm
(Diameter) (7) Major axis of cutting edge (d 2 portion in FIG. 1) 3.7 mm
(Diameter) (8) The root diameter and the peak diameter of the threaded portion are 3.5 mm and 4.
8mm (9) Axial length of head (14 in Fig. 1) 2.8m
m The drilling tapping screw is used to join the wood plywood (thickness 9.0 mm) and the steel plate (thickness 0.8 mm), and the perforation is completed smoothly, and there is no gap between the wood plywood and the steel plate. There was no separation and no gap was generated. In addition, in a test performed on a composite material of wood plywood and a steel plate by applying a tensile force in the direction of the joint surface between the wood plywood and the steel plate, the maximum yield strength is about 15% compared to the conventional reamer type. It was confirmed that the initial rigidity was twice as excellent.
【００１３】（実施例２）実施例２は、ねじ無し部（図
１でｂの部分）と切り刃先の平行部（図１でｃの部分）
の合計が木質合板と鋼板の合計厚みの１．５倍の事例で
ある。木質合板（厚み９．０ｍｍ）と鋼板（厚み１．０
ｍｍ）とを次のドリリングタッピンねじにより接合し
た。 （１）ねじ部（図１でａの部分）１２．０ｍｍ （２）ねじ無し部（図１でｂの部分）１０ｍｍ （３）切り刃の平行部（図１でｃの部分）５ｍｍ （４）切り刃の尖端部（図１でｄの部分）２ｍｍ （５）切り刃先（図１でｙの部分）７ｍｍ （６）ねじ無し部の径（図１でｄ1 の部分）４．１ｍｍ
（直径） （７）切り刃先の長径（図１でｄ2 の部分）４．３ｍｍ
（直径） （８）ねじ部の谷径、山径はそれぞれ４．１ｍｍ、５．
４ｍｍ （９）頭部（図１で符号１４）の軸方向の長さ３．０ｍ
ｍ かかるドリリングタッピンねじにより、上記の木質合板
（厚み９．０ｍｍ）と鋼板（厚み１．０ｍｍ）とを接合
する作業を行い、円滑に穿孔を完了し、木質合板と鋼板
との間には全く離間がなく、間隙は発生しなかった。ま
た、木質合板と鋼板との複合材料につき、木質合板と鋼
板との接合面の方向に引張力を付与して行なう試験にお
いて、従来のリーマ方式のものと比較して、最大耐力で
約１５％、初期剛性で２倍優れていることが認められ
た。(Embodiment 2) In Embodiment 2, a non-threaded portion (portion b in FIG. 1) and a parallel portion of the cutting edge (portion c in FIG. 1).
Is a case of 1.5 times the total thickness of the wood plywood and the steel plate. Wood plywood (thickness 9.0 mm) and steel plate (thickness 1.0
mm) with the following drilling tapping screw. (1) Threaded portion (portion a in FIG. 1) 12.0 mm (2) Threadless portion (portion b in FIG. 1) 10 mm (3) Parallel portion of cutting blade (portion c in FIG. 1) 5 mm (4 ) Tip of cutting blade (portion d in FIG. 1) 2 mm (5) Cutting edge (portion y in FIG. 1) 7 mm (6) Diameter of screwless portion (portion d 1 in FIG. 1) 4.1 mm
(Diameter) (7) Major axis of cutting edge (d 2 portion in FIG. 1) 4.3 mm
(Diameter) (8) The root diameter and the peak diameter of the threaded portion are 4.1 mm and 5.
4mm (9) 3.0m axial length of the head (14 in Fig. 1)
m The drilling tapping screw is used to join the wood plywood (thickness 9.0 mm) and the steel plate (thickness 1.0 mm), and the drilling is completed smoothly, and there is no gap between the wood plywood and the steel plate. There was no separation and no gap was generated. In addition, in a test performed on a composite material of wood plywood and a steel plate by applying a tensile force in the direction of the joint surface between the wood plywood and the steel plate, the maximum yield strength is about 15% compared to the conventional reamer type. It was confirmed that the initial rigidity was twice as excellent.
【００１４】（実施例３）実施例３は、鋼板で穿孔が完
了した際に、わずかにねじ部が木質合板にかかる場合の
事例である。木質合板（厚み９．０ｍｍ）と鋼板（厚み
０．６ｍｍ）とを次のドリリングタッピンねじにより接
合した。 （１）ねじ部（図１でａの部分）１１．１ｍｍ （２）ねじ無し部（図１でｂの部分）２ｍｍ （３）切り刃の平行部（図１でｃの部分）５ｍｍ （４）切り刃の尖端部（図１でｄの部分）２ｍｍ （５）切り刃先（図１でｙの部分）７ｍｍ （６）ねじ無し部の径（図１でｄ1 の部分）３．１ｍｍ
（直径） （７）切り刃先の長径（図１でｄ2 の部分）３．４ｍｍ
（直径） （８）ねじ部の谷径、山径はそれぞれ３．１ｍｍ、４．
２ｍｍ （９）頭部（図１で符号１４）の軸方向の長さ２．６ｍ
ｍ かかるドリリングタッピンねじにより、上記の木質合板
（厚み９．０ｍｍ）と鋼板（厚み０．６ｍｍ）とを接合
する作業を行い、円滑に穿孔を完了し、木質合板と鋼板
との間には全く離間がなく、間隙は発生しなかった。ま
た、木質合板と鋼板との複合材料につき、木質合板と鋼
板との接合面の方向に引張力を付与して行なう試験にお
いて、従来のリーマ方式のものと比較して、最大耐力で
約１５％、初期剛性で２倍優れていることが認められ
た。(Embodiment 3) Embodiment 3 is an example in which the threaded portion slightly touches the wood plywood when the perforation is completed in the steel plate. A wood plywood (thickness 9.0 mm) and a steel plate (thickness 0.6 mm) were joined by the following drilling tapping screws. (1) Threaded portion (portion a in FIG. 1) 11.1 mm (2) Unscrewed portion (portion b in FIG. 1) 2 mm (3) Parallel portion of cutting blade (portion c in FIG. 1) 5 mm (4 ) Tip of cutting blade (portion d in FIG. 1) 2 mm (5) Cutting edge (portion y in FIG. 1) 7 mm (6) Diameter of unthreaded portion (portion d 1 in FIG. 1) 3.1 mm
(Diameter) (7) Major axis of cutting edge (d 2 portion in FIG. 1) 3.4 mm
(Diameter) (8) The root diameter and the peak diameter of the screw portion are 3.1 mm and 4.
2mm (9) 2.6m axial length of the head (14 in FIG. 1)
m The drilling tapping screw is used to join the wood plywood (thickness 9.0 mm) and the steel plate (thickness 0.6 mm), and the perforation is completed smoothly, and there is no gap between the wood plywood and the steel plate. There was no separation and no gap was generated. In addition, in a test performed on a composite material of wood plywood and a steel plate by applying a tensile force in the direction of the joint surface between the wood plywood and the steel plate, the maximum yield strength is about 15% compared to the conventional reamer type. It was confirmed that the initial rigidity was twice as excellent.
【００１５】上記の（実施例１）において、ねじ無し部
の径（図１でｄ1 の部分）３．５ｍｍ（直径）に代え
て、２．５ｍｍ、３．７ｍｍによりそれぞれ実施した
が、同様に良好な結果を得た。また、上記の（実施例
２）において、ねじ無し部の径（図１でｄ1 の部分）
４．１ｍｍ（直径）に代えて、２．９ｍｍ、４．３ｍｍ
によりそれぞれ実施したが、同様に良好な結果を得た。
また、上記の（実施例３）において、ねじ無し部の径
（図１でｄ1 の部分）３．１ｍｍ（直径）に代えて、
２．２ｍｍ、３．４ｍｍによりそれぞれ実施したが、同
様に良好な結果を得た。In the above (Example 1), the diameter of the unthreaded portion (d 1 portion in FIG. 1) was changed to 3.5 mm (diameter), and 2.5 mm and 3.7 mm were used, respectively. Good results have been obtained. In addition, in the above (Example 2), the diameter of the screwless portion (d 1 portion in FIG. 1)
Instead of 4.1mm (diameter), 2.9mm, 4.3mm
The same good results were obtained.
Further, in the above (Example 3), instead of the diameter of the unthreaded portion (portion d 1 in FIG. 1) 3.1 mm (diameter),
The same results were obtained, although they were respectively set to 2.2 mm and 3.4 mm.
【００１６】[0016]
【発明の効果】本発明によって、次のような効果を奏す
る。 （１）金属材に孔をあけている間は、軟質材中のねじ無
し部は空回りするので、金属材と軟質材間に間隙ができ
ることがなく、金属材に対する穿孔が円滑に進行し、施
工の能率と信頼性を向上することができる。 （２）リーマを設ける場合のように、過大孔をあけない
ので、ドリリングタッピンねじの生命である接合部での
接合性能である初期剛性、耐力を低下させることがな
い。また、穿孔の過程でリーマを外す必要がなく、この
点から施工性を低下することはなく、接合作業は円滑に
実行できる。 （３）ねじ無し部の存在により、ドリリングタッピンね
じによる硬質板の穿孔に伴う軟質材と硬質材との離間が
ないので、金属材が薄い場合でも利用でき、また軟質材
が比較的硬い場合でも使用できる。The present invention has the following effects. (1) While the metal material is being drilled, the unscrewed part in the soft material idles, so there is no gap between the metal material and the soft material, and the perforation of the metal material progresses smoothly. The efficiency and reliability of can be improved. (2) Unlike the case where a reamer is provided, an oversized hole is not formed, and therefore the initial rigidity and yield strength, which are the joining performance at the joint, which is the life of the drilling tapping screw, are not reduced. Further, it is not necessary to remove the reamer in the process of drilling, and in this respect, the workability is not deteriorated, and the joining work can be performed smoothly. (3) Since there is no separation between the soft material and the hard material due to the drilling of the hard plate by the drilling tapping screw due to the existence of the screwless portion, it can be used even when the metal material is thin, and even when the soft material is relatively hard. Can be used.
【図１】本発明のドリリングタッピンねじの例の詳細を
示す図である。FIG. 1 is a diagram showing details of an example of a drilling tapping screw of the present invention.
【図２】本発明のドリリングタッピンねじと、金属材と
軟質材との関係の例を示す図である。FIG. 2 is a diagram showing an example of a relationship between a drilling tapping screw of the present invention and a metal material and a soft material.
【図３】本発明のドリリングタッピンねじにより木質合
板と鋼板とを接合する作業の進行を説明する図である。FIG. 3 is a view for explaining the progress of the work of joining the wood plywood and the steel plate with the drilling tapping screw of the present invention.
【図４】本発明のドリリングタッピンねじを適用する木
質合板と鋼板とを複合板を示す図である。（イ）は斜視
図、（ロ）は側面図である。FIG. 4 is a view showing a composite plate of wood plywood and steel plate to which the drilling tapping screw of the present invention is applied. (A) is a perspective view and (B) is a side view.
【図５】従来の技術を説明する図である。FIG. 5 is a diagram illustrating a conventional technique.
【図６】リーマ方式による従来の技術を説明する図であ
る。FIG. 6 is a diagram illustrating a conventional technique using a reamer system.
【図７】従来のドリリングタッピンねじを示す図であ
る。FIG. 7 is a view showing a conventional drilling tapping screw.
【図８】従来のドリリングタッピンねじ（ＪＩＳ Ｂ１
１２５−１９９０による。）を示す図である。FIG. 8 Conventional drilling tapping screw (JIS B1
125-1990. ) Is a figure which shows.
１ ドリリングタッピンねじ ２ ねじ部 ３ 切り刃先 ３ａ 切り刃 ４ ねじ無し部 ５ 木質合板 ６ 鋼板 ７ 鋼材 ７ａ フランジ ８ ドリリングタッピンねじ ９ 木材板 １０ 鋼板 １１ 間隙 １２ リーマ １３ 孔 １４ 頭部 1 Drilling tapping screw 2 Screw part 3 Cutting edge 3a Cutting blade 4 No screw part 5 Wood plywood 6 Steel plate 7 Steel material 7a Flange 8 Drilling tapping screw 9 Wood plate 10 Steel plate 11 Gap 12 Reamer 13 Hole 14 Head
Claims (2)
間に、切り刃による金属材の穿孔時に、既に穿孔された
軟質材の部分に対して空回り可能な径と長さを有するね
じ無し部を設けたことを特徴とするドリリングタッピン
ねじ。1. A diameter and a length between a cutting edge provided with a cutting blade and a screw portion, which allow idle rotation of a portion of a soft material that has already been drilled when the metal material is punched by the cutting blade. Drilling tapping screw with a non-threaded part.
間にねじ無し部を設け、ねじ無し部の径を、切り刃先の
長径と等しいか、もしくは切り刃先の長径より小さく
し、またねじ無し部と切り刃先の平行部の合計長さを穿
孔部位における金属材と軟質材の合計厚さに対して０．
８〜１．５倍としたことを特徴とするドリリングタッピ
ンねじ。2. A non-threaded portion is provided between the cutting edge provided with the cutting blade and the threaded portion, and the diameter of the non-threaded portion is equal to the major axis of the cutting edge or smaller than the major axis of the cutting edge, Further, the total length of the unthreaded portion and the parallel portion of the cutting edge was set to 0.
Drilling tapping screw characterized by 8 to 1.5 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7469495A JPH08247125A (en) | 1995-03-08 | 1995-03-08 | Drilling tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7469495A JPH08247125A (en) | 1995-03-08 | 1995-03-08 | Drilling tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08247125A true JPH08247125A (en) | 1996-09-24 |
Family
ID=13554601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7469495A Withdrawn JPH08247125A (en) | 1995-03-08 | 1995-03-08 | Drilling tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08247125A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007024209A (en) * | 2005-07-19 | 2007-02-01 | Otis:Kk | Fixing screw for inorganic building material |
| JP2007239960A (en) * | 2006-03-10 | 2007-09-20 | Nippon Steel Corp | Joining structure and joining method of steel material, and building of frame construction |
-
1995
- 1995-03-08 JP JP7469495A patent/JPH08247125A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007024209A (en) * | 2005-07-19 | 2007-02-01 | Otis:Kk | Fixing screw for inorganic building material |
| JP2007239960A (en) * | 2006-03-10 | 2007-09-20 | Nippon Steel Corp | Joining structure and joining method of steel material, and building of frame construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020604 |