JP2003028123A - Fastening member for thin metal plate and fastening method for thin metal plate - Google Patents
Fastening member for thin metal plate and fastening method for thin metal plateInfo
- Publication number
- JP2003028123A JP2003028123A JP2001215259A JP2001215259A JP2003028123A JP 2003028123 A JP2003028123 A JP 2003028123A JP 2001215259 A JP2001215259 A JP 2001215259A JP 2001215259 A JP2001215259 A JP 2001215259A JP 2003028123 A JP2003028123 A JP 2003028123A
- Authority
- JP
- Japan
- Prior art keywords
- thin metal
- fastening
- plate
- metal plate
- nut
- 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.)
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Abstract
Description
【発明の属する技術分野】本発明は、複数の金属板、特
に異種金属板をドリリングタッピンねじにより締結する
方法についての改善技術に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved technique for fastening a plurality of metal plates, particularly dissimilar metal plates with a drilling tapping screw.
【従来の技術】一般に、自動車や鉄道車両など金属製板
材で構成される構造物の継手部は、スポット溶接やリベ
ット嵌合、ボルト締結などで接合されている。しかし、
鋼板とアルミニウム板など鉄と非鉄金属間の異材溶接は
非常に難しく、通常のスポット溶接は適用できない。ま
た、リベット嵌合やボルト締結による方法は、予め穴開
けが必要であり余分な工程手間が増えるだけではなく、
多点結合を行う場合には穴ずれなどの問題も生じやす
い。さらに、ボルト締結の場合には、高振動下で用いら
れるとナット緩みの問題が生じやすい。なお、穴開けの
手間を省くため、釘形状をしたリベットで金属板を打ち
抜く方法が用いられることがあるが、この場合、打ち穴
周辺にえくぼ状の伸びが生じ、貫通時には穴回りに複数
の放射状き裂が生じるため板材の強度低下が免れ得な
い。特に、異種金属板を接合する場合には、金属材料の
伸びの相違により板材間に隙間が生じるので、一層強度
低下を招きやすい。また、金属板を打ち抜くため釘形状
のリベットは材料強度や硬度の高いものを用いる他な
く、かしめの際に多大なプレス力を要する問題もある。
しかも、かしめが十分でない場合には、リベットを中心
に板材の回転が生じリベットの摩耗や折損の原因となる
こともある。一方、リベット嵌合やボルト締結にかわる
接合方法として、例えば、特開2000−141066
号公報、2000−61663号公報、特開2000−
153374号公報、特開2000−153375号公
報などに開示されている摩擦攪拌接合による方法、特開
平11−42512号公報に開示されている圧入接合に
よる方法、接着剤による接合方法などの提案がなされて
いる。しかしながら、摩擦拡散接合による方法は、比較
的低温で溶融・軟化するアルミニウムまたはアルミニウ
ム合金板同士を接合する場合には適用できるが、一方又
は双方が鋼板の場合には適用できない。また、圧入接合
による方法は、アルミニウム合金で形成された外部材の
穴に鉄製の内部材を圧入して接合することにより異種金
属の接合を可能とするものであるが、板材同士を接合す
るのには適用できない。また、接着剤による接合の場合
には、接合部に荷重を受けた場合や温度変化が生じた場
合、各金属材料の応力歪みや熱歪みの相違により、接合
面がはがれやすい問題がある。以上のように、異種金属
板を、板材や締結部材の強度低下や損傷を招くことな
く、簡易かつ確実に締結できる適当な方法はこれまで存
在しなかった。2. Description of the Related Art Generally, a joint portion of a structure made of a metal plate material such as an automobile or a railroad vehicle is joined by spot welding, rivet fitting, bolt fastening or the like. But,
Dissimilar material welding between ferrous and non-ferrous metals such as steel plate and aluminum plate is very difficult and ordinary spot welding cannot be applied. In addition, the method of fitting rivets and fastening bolts requires pre-drilling, which not only increases extra process time, but also
When multi-point connection is performed, problems such as hole shift are likely to occur. Further, in the case of bolt fastening, the problem of nut loosening is likely to occur when used under high vibration. In order to save the labor of punching, a method of punching a metal plate with a nail-shaped rivet may be used, but in this case, a dimple-shaped extension occurs around the punched hole, and a plurality of holes are formed around the hole during penetration. Since radial cracks occur, the strength of the plate material cannot be reduced. In particular, when dissimilar metal plates are joined, a gap is created between the plate materials due to the difference in elongation of the metal materials, so that the strength is more likely to be reduced. Further, in order to punch out a metal plate, a nail-shaped rivet having a high material strength and hardness must be used, and there is a problem that a large pressing force is required at the time of caulking.
Moreover, if the caulking is not sufficient, the plate material may rotate around the rivet, which may cause wear or breakage of the rivet. On the other hand, as a joining method instead of rivet fitting or bolt fastening, for example, Japanese Patent Laid-Open No. 2000-141066.
No. 2000-61663, JP 2000-
Proposals have been made such as a method by friction stir welding disclosed in Japanese Patent Laid-Open No. 153374 and 2000-153375, a method by press-fitting welding disclosed in Japanese Patent Laid-Open No. 11-42512, and a joining method by an adhesive. ing. However, the friction diffusion welding method can be applied to joining aluminum or aluminum alloy plates that melt and soften at a relatively low temperature, but cannot apply to one or both of which are steel plates. Further, the method of press-fitting and joining enables dissimilar metal to be joined by press-fitting and joining an iron inner member into a hole of an outer member formed of an aluminum alloy. Not applicable to. Further, in the case of joining with an adhesive, there is a problem that the joining surface is easily peeled off due to the difference in stress strain and thermal strain of each metal material when a load is applied to the joining portion or a temperature change occurs. As described above, there has been no suitable method for simply and reliably fastening dissimilar metal plates without lowering the strength of the plate material or the fastening member or damaging the fastening members.
【発明が解決しようとする課題】そこで本発明の目的
は、複数金属板、特に異種金属板を、板材や締結部材の
強度低下や損傷を招くことなく、簡易かつ確実に締結で
きる締結部材及び締結方法を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a fastening member and a fastening member which can fasten a plurality of metal plates, especially dissimilar metal plates, easily and reliably without lowering the strength or damage of the plate members and the fastening members. To provide a method.
【課題を解決するための手段】前記の目的を達成するた
め、発明者らは、比較的薄い板材を機械的に締結するの
に一般的に用いられるドリリングタッピンねじに、ねじ
穴を有しないばね板ナットを組み合わせて用いる締結部
材および締結方法について種々検討を行い、本発明を完
成するに至った。本発明の要旨は以下の通りである。請
求項1の発明は、薄金属板を複数枚重ねて締結する、ド
リリングタッピンねじと、ばね板ナットとの組合せによ
り構成された薄金属板締結部材であって、前記ドリリン
グタッピンねじは、前記薄金属板板厚より小さいピッチ
のねじ山が形成された軸部と、該軸部の一端部に形成さ
れたドリル部と、前記軸部の他端部に形成された軸部直
径より大径の頭部とからなり、前記ばね板ナットは、皿
形状でねじ穴を有さず、前記ピッチより大きな板厚を備
えたことを特徴とする薄金属板締結部材である。請求項
2の発明は、複数の前記薄金属板を締結するに際し、前
記薄金属板の一方の面に、前記ばね板ナットがその凹面
側を向けて当接され、前記ドリリングタッピンねじが前
記複数薄金属板の他方の面側からねじ込まれることによ
り締結することを特徴とする請求項1に記載の薄金属板
締結部材である。請求項3の発明は、薄金属板を複数枚
重ねて締結する、ドリリングタッピンねじとばね板ナッ
トと、皿ばね座金との組合せにより構成された薄金属板
締結部材であって、前記ドリリングタッピンねじは、前
記薄金属板板厚より小さいピッチのねじ山が形成された
軸部と、該軸部の一端部に形成されたドリル部と、前記
軸部の他端部に形成された軸部直径より大径の頭部とか
らなり、前記ばね板ナット及び前記皿ばね座金は、とも
に皿形状でねじ穴を有さず、前記ピッチより大きな板厚
を備えたことを特徴とする薄金属板締結部材である。請
求項4の発明は、複数の前記薄金属板を締結するに際
し、前記薄金属板の一方の面に、前記ばね板ナットがそ
の凹面側を向けて当接されるとともに、他方の面に、前
記皿ばね座金がその凹面側を向けて当接され、前記ドリ
リングタッピンねじが前記皿ばね座金側からねじ込まれ
ることにより締結することを特徴とする請求項3に記載
の薄金属板締結部材である。請求項5の発明は、ドリリ
ングタッピンねじと、ばね板ナットとの組合せにより構
成された薄金属板締結部材により、薄金属板を複数枚重
ねて締結する薄金属板締結方法であって、前記ドリリン
グタッピンねじは、前記薄金属板板厚より小さいピッチ
のねじ山が形成された軸部と、該軸部の一端部に形成さ
れたドリル部と、前記軸部の他端部に形成された軸直径
より大径の頭部とからなり、前記ばね板ナットは、皿形
状でねじ穴を有さず、前記ピッチより大きな板厚を備
え、前記薄金属板の一方の面に、前記ばね板ナットをそ
の凹面側を向けて当接し、前記ドリリングタッピンねじ
を前記薄複数金属板の他方の面側からねじ込んで前記ば
ね板ナットまで貫通させ、前記ばね板ナットを前記複数
薄金属板の一方の面側に変形させることにより締結する
ことを特徴とする薄金属板締結方法である。請求項6の
発明は、ドリリングタッピンねじとばね板ナットと皿ば
ね座金との組合せにより構成された薄金属板締結部材に
より、薄金属板を複数枚重ねて締結する薄金属板締結方
法であって、前記ドリリングタッピンねじは、前記薄金
属板板厚より小さいピッチのねじ山が形成された軸部
と、該軸部の一端部に形成されたドリル部と、前記軸部
の他端部に形成された軸直径より大径の頭部とからな
り、前記ばね板ナット及び前記皿ばね座金は、ともに皿
形状でねじ穴を有さず、前記ピッチより大きな板厚を備
え、前記薄金属板の一方の面に、前記ばね板ナットをそ
の凹面側を向けて当接するとともに、他方の面に、前記
皿ばね座金をその凹面側を向けて当接し、前記ドリリン
グタッピンねじを前記皿ばね座金側からねじ込んで前記
ばね板ナットまで貫通させ、前記ばね板ナットを前記複
数薄金属板の一方の面側に変形させるとともに、前記皿
ばね座金を前記複数薄金属板の他方の面側に変形させる
ことにより締結することを特徴とする薄金属板締結方法
である。In order to achieve the above-mentioned object, the present inventors have proposed a drilling tapping screw which is generally used for mechanically fastening a relatively thin plate material, with a spring having no screw hole. Various studies have been conducted on fastening members and fastening methods using a combination of plate nuts, and the present invention has been completed. The gist of the present invention is as follows. The invention of claim 1 is a thin metal plate fastening member configured by a combination of a drilling tapping screw and a spring plate nut for stacking and fastening a plurality of thin metal plates, wherein the drilling tapping screw is the thin film. A shaft portion formed with a thread having a pitch smaller than the thickness of the metal plate, a drill portion formed at one end of the shaft portion, and a diameter larger than the diameter of the shaft portion formed at the other end of the shaft portion. A thin metal plate fastening member comprising a head portion, the spring plate nut having a dish shape, having no screw holes, and having a plate thickness larger than the pitch. According to a second aspect of the present invention, when fastening the plurality of thin metal plates, the spring plate nut is brought into contact with one surface of the thin metal plates with its concave side facing, and the drilling tapping screws are the plurality of the plurality of thin metal plates. The thin metal plate fastening member according to claim 1, which is fastened by being screwed in from the other surface side of the thin metal plate. According to a third aspect of the present invention, there is provided a thin metal plate fastening member configured by a combination of a drilling tapping screw, a spring plate nut, and a disc spring washer for stacking and fastening a plurality of thin metal plates, the drilling tapping screw. Is a shaft portion formed with a thread having a pitch smaller than the thickness of the thin metal plate, a drill portion formed at one end portion of the shaft portion, and a shaft portion diameter formed at the other end portion of the shaft portion. A thin metal plate fastening characterized in that the spring plate nut and the disc spring washer each have a larger diameter and both have a disc shape and do not have a screw hole, and have a plate thickness larger than the pitch. It is a member. According to the invention of claim 4, when fastening a plurality of the thin metal plates, the spring plate nut is abutted on one surface of the thin metal plates with its concave surface side facing, and on the other surface. 4. The thin metal plate fastening member according to claim 3, wherein the disc spring washer is abutted with its concave surface side facing, and the drilling tapping screw is screwed from the disc spring washer side for fastening. . A fifth aspect of the present invention is a thin metal plate fastening method in which a plurality of thin metal plates are stacked and fastened by a thin metal plate fastening member configured by a combination of a drilling tapping screw and a spring plate nut. The tapping screw includes a shaft portion formed with a thread having a pitch smaller than the thin metal plate thickness, a drill portion formed at one end portion of the shaft portion, and a shaft formed at the other end portion of the shaft portion. The spring plate nut is formed of a head having a diameter larger than the diameter, the spring plate nut does not have a screw hole and has a plate thickness larger than the pitch, and the spring plate nut is provided on one surface of the thin metal plate. Abutting with its concave side facing, screwing the drilling tapping screw from the other surface side of the thin metal plates to the spring plate nut and penetrating the spring plate nut to one face of the thin metal plates. Tighten by deforming side A thin metal plate fastening method characterized by. A sixth aspect of the present invention is a thin metal plate fastening method in which a plurality of thin metal plates are fastened together by a thin metal plate fastening member configured by a combination of a drilling tapping screw, a spring plate nut, and a disc spring washer. The drilling tapping screw has a shaft portion formed with a thread having a pitch smaller than the thickness of the thin metal plate, a drill portion formed at one end portion of the shaft portion, and the other end portion of the shaft portion. And a head having a diameter larger than the shaft diameter, the spring plate nut and the disc spring washer are both disc-shaped and have no screw holes, and have a plate thickness larger than the pitch, and the thin metal plate The spring plate nut is abutted on one surface with its concave side facing, and the other disc spring washer is abutted on its other side with its concave side facing, and the drilling tapping screw is attached from the disc spring washer side. Screw in the spring plate nut The spring plate nut is deformed to one surface side of the plurality of thin metal plates, and the disc spring washer is deformed to the other surface side of the plurality of thin metal plates for fastening. It is a thin metal plate fastening method.
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照しながら説明する。図1は本発明の実施の
形態に係る薄金属板締結部材を構成するばね板ナットの
断面図であり、図2は本発明(請求項1、2、5)の実
施の形態に係る薄金属板締結部材により2枚の薄金属板
を締結した状態を示す断面図である。図中符号1は、本
発明の実施の形態に係る薄金属板締結部材を構成するド
リリングタッピンねじであって、その軸部1aには締結
する各薄金属板板厚より小さいピッチのねじ山(ねじ部
1d)が形成されている。後述するように、1枚当たり
の被締結薄金属板板厚は0.5〜3mmが好ましく、こ
れより、ねじピッチは0.2〜1.5mm程度が好まし
い範囲となる。また、軸部1aの一端部にはドリル部1
b、他端部には軸部1a直径より大径の頭部1cが一体
に形成されている。ねじ山のピッチを各薄金属板板厚よ
り小さくしているので、ドリリングタッピンねじ1が各
薄金属板を貫通したとき、該各薄金属板にめねじが1ピ
ッチ以上形成されるため、ドリリングタッピンねじ1と
該各金属板とがねじ結合により確実に締結される効果が
ある。ドリル部1bは、とがり先のものでも切り刃先の
ものでもよく、締結する薄金属板の材質、板厚などによ
り適宜選択し得るものである。軸部1aの外径(ねじ
径)は、ドリル部1bの穴開け性能や軸部1aの耐座屈
性を考慮して1枚当たりの板厚の2倍程度とすることが
好ましい。したがって、1枚当たりの板厚を0.5〜3
mmとした場合、M1〜M6程度が好ましい範囲とな
る。なお、ドリリングタッピンねじ1の材質を、締結さ
れる薄金属板の材質より高強度・高硬度のものとすれ
ば、技術的にはねじ径をさらに小さくしてM1未満のも
のを製造することも可能であるが、ねじ径を小さくする
とドリリングタッピンねじ1をねじ込むための電動ドリ
ルをより高速回転・高性能とする必要があり、市販の電
動ドリルをそのまま用いることができず専用の電動ドリ
ルが必要となることからも、M1以上とすることが望ま
しい。また頭部1cは、軸部1a直径より大径であれば
その形状に制限はなく、図2に示した丸頭の他、四角
頭、六角頭などでもよく、外観を重視する場合には皿頭
を用いてもよい。そして、頭部1c上面には、ドリリン
グタッピンねじ1の回転手段として、−状溝、+状溝、
六角穴、四角穴などが形成されている必要がある。ま
た、ドリリングタッピンねじ1の材質は、締結する薄金
属板と材料強度や硬度が同等程度以上のものであれば特
に限定されるものではなく、例えば、通常の炭素鋼を用
いることができるが、耐食性を要求される場合には、ス
テンレス鋼や高強度アルミニウム合金などを用いてもよ
い。図1に示すばね板ナット2は、ドリリングタッピン
ねじ1と同様、炭素鋼、ステンレス鋼、高強度アルミニ
ウム合金など剛性を持つ材料により、ねじ穴を有しない
皿形状に形成されたものであり、その厚みは、薄すぎる
と強度上問題となること、および上記と同様、確実な締
結を達成するため、ドリリングタッピンねじ1の貫通時
に1ピッチ以上のめねじが形成される厚みとする。そし
て、ばね板ナット2の凹面2aの底部中央部に予めポン
チなどにより窪み2dを形成しておき、ドリリングタッ
ピンねじ1のドリル部1b先端によるねじ立て位置が中
心からずれること(いわゆるセンターずれ)を防止する
構造としておくことも好ましい。さらに、ドリリングタ
ッピンねじ1によるねじ立て時にばね板ナット2が連れ
回りしないように、ばね板ナット2の、被締結薄金属板
と接する縁部2cの表面に予めローレット加工や切り欠
き、凹凸などの滑り止め加工を施しておくことが好まし
く、ドリリングタッピンねじ1を締め込むことによりば
ね板ナット2を変形させてその凹面2a底部が被締結薄
金属板に接触するような締結を行った場合、締結後の高
振動によってもばね板ナット2の緩みが生じにくいよう
凹面2aの表面にも上記と同様の滑り止め加工を施して
おくことがさらに好ましい。また、ばね板ナット2の径
は、高振動下で用いても緩みが生じないように、ねじ径
の2倍以上とすることが好ましい。このドリリングタッ
ピンねじ1とばね板ナット2とからなる薄金属板締結部
材を用いて締結される薄金属板の1枚当たりの厚みは
0.5〜3mmが好ましい。0.5mm未満では、金属
板が薄すぎてめねじを1ピッチ以上形成することが難し
く、3mm超ではドリリングタッピンねじ1を金属板に
ねじ込む途中でドリル部1bの刃先が鈍化して貫通でき
ない場合もあるからである。なお、締結される薄金属板
の枚数は、図2および3に示す2枚に限るものではな
く、3枚以上であってもよい。また、締結される薄金属
板の材質は、特に制限されるものではなく、異種材料間
(例えば、鋼板とアルミニウム合金板)の締結はもちろ
ん、同種材料同士(例えば、鋼板と鋼板、アルミニウム
合金板とアルミニウム合金板)を締結する場合であって
もよい。図3は、本発明(請求項1、2、5)の実施に
係るドリリングタッピンねじ1とばね板ナット2とから
なる薄金属板締結部材を用いて複数枚(図3においては
2枚)の薄金属板を重ねて締結する方法の一例を説明す
る図である。図3において、Bは電動ドリル、Cは締結
用作業台、Dは板固定手段、Eはねじ先端切断手段であ
る。図3に示すように、締結用作業台Cには、その板保
持面C1にばね板ナット2を保持する凹部C2が設けら
れ、さらにその凹部C2の底部中央部には孔部C3を設
け、ドリリングタッピンねじ1のドリル部1b先端がば
ね板ナット2を貫通したときに下に突き出せる構造とし
ている。また、凹部C2の真上にドリリングタッピンね
じ1をねじ込むための電動ドリルBが昇降自在に設けら
れるとともに、複数枚の重ねた薄金属板Aを上から板保
持面C1に押し付けて固定する板固定手段Dが昇降自在
に構成されている。板固定手段Dとして、例えば、図3
に示すように、電動ドリルBが昇降する空間の周囲にば
ね付きの押え部材D1が複数個配置され、それらが電動
ドリルBの昇降に連動して機構的に上下するように構成
されたもの、あるいは押え部材D1を普通鋼で製作する
とともに、押え部材D1の真下の板保持面C1に電磁石
を埋め込み、その電磁石への通電の有無により押え部材
D1を着脱させる等の手段を用いることができる。締結
に際しては、先ず、ばね板ナット2をその凹面側を上方
に向けて凹部C2に嵌め込む。凹部C2の径は、ばね板
ナット2を嵌め込みやすくする一方、嵌め込んだ後、ば
ね板ナットの中心位置があまり片寄らないよう、ばね板
ナット2の径より少しだけ大きくしておくことが望まし
い。また、凹部C2の深さは、ばね板ナット2の全体厚
みと同等あるいはやや浅めとして、複数薄金属板Aが板
固定手段Dにより板保持面C1に押し付けられたとき
に、最下部の薄金属板Abとばね板ナット2が当接する
ようにしておくことが望ましい。つまり、凹部C2の深
さが深過ぎると、ばね板ナット2と最下部の薄金属板A
bとの間に隙間ができ、ドリリングタッピンねじ1のド
リル部1bがばね板ナット2にねじ切りをする際に連れ
回りを起してしまう問題が生じる一方、凹部C2の深さ
が浅すぎると、ばね板ナット2が板保持面C1より上方
に突き出るため複数薄金属板Aが板保持面C1から浮き
上がってしまい、ドリリングタッピンねじ1のねじ込み
作業が不安定となるからである。次に、重ねた複数枚の
薄金属板Aを、その複数薄金属板Aにドリリングタッピ
ンねじ1を打ち込む位置が電気ドリルBの真下となるよ
うに板保持面C1上にセットする。そして、板固定手段
Dを下降させて複数薄金属板Aを板保持面C1に押し付
けて固定した後、電気ドリルBを、その先端にドリリン
グタッピンねじ1を保持して下降させ、ねじ先端を複数
薄金属板Aの上面A1に接触させた後、ドリルBを回転
させてドリリングタッピンねじ1をそのドリル部1bで
複数薄金属板A(At、Ab)を順次穿孔しながらねじ
込んでいく。ドリル部1b先端が複数薄金属板A(A
t、Ab)を貫通した後、さらにばね板ナット2を穿孔
して貫通する。ここで、図2に示すように、ドリリング
タッピンねじ1の軸部1aはねじ切りされているが、ね
じ形成に用いられるねじ加工工具の構造上、頭部1c直
下には不完全ねじ部1eが少なくとも0.5〜1ピッチ
分程度は必ず存在し、ドリリングタッピンねじ1がねじ
込まれていき、その頭部1cが複数薄金属板Aの上面A
1に接触した後、さらにこの不完全ねじ部1e分を締め
込むに際し、ドリリングタッピンねじ1自身は、その頭
部1cが上面A1に拘束されてそれ以上下方に移動でき
ずその位置で回転する一方、ばね板ナット2にはドリリ
ングタッピンねじ1のねじ部1dがねじ込まれ、ばね板
ナット2はその縁部2cで複数薄金属板Aの下面A2に
拘束されているためその凹面2a側が下面A2側に引き
寄せられて弾性変形(一部塑性変形してもよい)し、ば
ね板ナット2がその縁部2cを介して下面A2に強く押
し付けられる。以上により、複数薄金属板A(At、A
b)はドリリングタッピンねじ1によりねじ結合される
とともに、弾性変形したばね板ナット2で強く押し付け
られるので、リベット結合で問題となる板材の回転は起
らない。また、ドリリングタッピンねじ1で最下面の薄
金属板Abを穴開けした際にできるバリ(付着切削屑や
端部突起など)は、ばね板ナット2により隠されること
から、締結部の美観が重視される場合においても締結作
業後にバリ取りなどの作業を必要としないメリットもあ
る。なお、ばね板ナット2を貫通したドリル部1b先端
部が美観上問題となる場合には、例えば、図3に示すよ
うに、孔部C3に刃先が突き出るように構成した、ねじ
先端切り落とし手段E等を設けておけばよい。なお、本
発明(請求項1、2、5)の別の実施形態として、図4
に示すような、頭部1c直下の軸部1aにねじ切りがな
されていない非ねじ部1fを、複数薄金属板A(At、
Ab)の合計厚みと同等またはそれより少し長目に残し
たドリリングタッピンねじ1を用いてもよい。この場
合、このドリリングタッピンねじ1をその頭部1cが複
数薄金属板Aの上面A1に接触するまでねじ込んで、ね
じ部1dを複数薄金属板A(At、Ab)の合計厚みを
完全に通過させた後、さらにドリリングタッピンねじ1
の回転を継続させると、複数薄金属板A(At、Ab)
の厚みの部分には非ねじ部1fが存在するので空回りす
るが、ばね板ナット2にはねじ部1dがねじ込まれるの
でばね板ナット2の凹面2a側が複数薄金属板Aの下面
A2側に弾性変形(一部塑性変形してもよい)しつつ引
き寄せられ、遂には凹面2a底部が下面A2と接触す
る。したがって、この場合には、図2の場合と異なり、
複数薄金属板A(At、Ab)とドリリングタッピンね
じ1とはねじ結合されないが、その替わりに、ばね板ナ
ット2が図2の場合よりさらに大きく変形してより強い
弾性力で下面A2に押し付けられるとともに、ばね板ナ
ット2と下面A2との接触面積が増大してより大きな摩
擦力が生じるので、高振動下においても緩みの問題は生
じない。図5は本発明(請求項3、4、6)の実施の形
態に係る薄金属板締結部材により2枚の薄金属板を締結
した状態を示す断面図である。図5において、ドリリン
グタッピンねじ1およびばね板ナット2は、図2に示す
ものと同様のものである。図5中、符号3は、皿ばね座
金であり、ばね板ナット2と同様、炭素鋼、ステンレス
鋼、高強度アルミニウム合金など剛性を持つ材料によ
り、ねじ穴を有しない皿形状に形成されたものであり、
その厚みは、薄すぎると強度上問題となること、および
確実な締結を達成するためドリリングタッピンねじ1の
貫通時に1ピッチ以上のめねじが形成される厚みとす
る。そして、皿ばね座金3の凸面3bの頂部中央部に予
めポンチなどにより窪み(図示せず)を形成しておき、
ドリリングタッピンねじ1のドリル部1b先端によるね
じ立て位置が中心からずれること(いわゆるセンターず
れ)を防止する構造としておくことも好ましい。さら
に、ドリリングタッピンねじ1によるねじ立て時にばね
板ナット2が連れ回りしないように、皿ばね座金3の、
被締結薄金属板Atと接する縁部3cの表面に予めロー
レット加工や切り欠き、凹凸などの滑り止め加工を施し
ておくことが好ましく、ドリリングタッピンねじ1を締
め込むことにより皿ばね座金3を変形させてその凹面3
aが被締結薄金属板に接触するような締結を行った場
合、締結後の高振動によっても皿ばね座金3の緩みが生
じにくいよう凹面3aの表面にも上記と同様の滑り止め
加工を施しておくことがさらに好ましい。また、皿ばね
座金3の径は、高振動下で用いても緩みが生じないよう
に、ねじ径の2倍以上とすることが好ましい。本締結部
材を用いて複数枚の薄金属板を締結する方法としては、
図示していないが、図3と同様の装置を用い、ばね板ナ
ット2、複数薄金属板Aの順にセットし、さらに皿ばね
座金3の凹面3a側を下に向けて複数薄金属板Aの上面
A1上に当接した後、その皿ばね座金3の凸面3b側か
らドリリングタッピンねじ1をねじ込めばよい。ドリリ
ングタッピンねじ1およびばね板ナット2に加えて、皿
ばね座金3を組合せて用いることにより、さらに確実な
締結を実現できる。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a spring plate nut that constitutes a thin metal plate fastening member according to an embodiment of the present invention, and FIG. 2 is a thin metal plate according to an embodiment of the present invention (claims 1, 2, and 5). It is sectional drawing which shows the state which fastened two thin metal plates by the plate fastening member. Reference numeral 1 in the drawing denotes a drilling tapping screw that constitutes a thin metal plate fastening member according to an embodiment of the present invention, and has a thread portion (pitch smaller than each thin metal plate thickness to be fastened to its shaft portion 1a). The threaded portion 1d) is formed. As will be described later, the thickness of each thin metal plate to be fastened is preferably 0.5 to 3 mm, and the screw pitch is preferably about 0.2 to 1.5 mm. Further, the drill portion 1 is provided at one end of the shaft portion 1a.
b, a head portion 1c having a diameter larger than the diameter of the shaft portion 1a is integrally formed at the other end portion. Since the pitch of the threads is smaller than the thickness of each thin metal plate, when the drilling tapping screw 1 penetrates each thin metal plate, one or more female threads are formed on each thin metal plate. There is an effect that the tapping screw 1 and each of the metal plates are securely fastened by screw connection. The drill portion 1b may be a pointed tip or a cutting edged tip, and can be appropriately selected depending on the material and plate thickness of the thin metal plate to be fastened. The outer diameter (screw diameter) of the shaft portion 1a is preferably about twice the plate thickness per sheet in consideration of the drilling performance of the drill portion 1b and the buckling resistance of the shaft portion 1a. Therefore, the plate thickness per sheet is 0.5 to 3
In the case of mm, a preferable range is about M1 to M6. If the drilling tapping screw 1 is made of a material having higher strength and hardness than the material of the thin metal plate to be fastened, it is technically possible to produce a screw having a diameter smaller than M1. It is possible, but if the screw diameter is reduced, the electric drill for screwing in the drilling tapping screw 1 needs to be rotated at higher speed and with higher performance, and a commercially available electric drill cannot be used as it is and a dedicated electric drill is required. Therefore, it is preferable to set M1 or more. The shape of the head 1c is not limited as long as it is larger than the diameter of the shaft 1a, and may be a square head, a hexagonal head, etc. in addition to the round head shown in FIG. You may use your head. Then, on the upper surface of the head 1c, as a rotating means of the drilling tapping screw 1, −-shaped groove, + -shaped groove,
Hexagonal holes and square holes must be formed. The material of the drilling tapping screw 1 is not particularly limited as long as the material strength and hardness are equal to or higher than those of the thin metal plate to be fastened, and for example, ordinary carbon steel can be used. When corrosion resistance is required, stainless steel, high-strength aluminum alloy, or the like may be used. The spring plate nut 2 shown in FIG. 1 is made of a material having rigidity such as carbon steel, stainless steel, and high-strength aluminum alloy into a dish shape having no screw hole, like the drilling tapping screw 1. If the thickness is too thin, there will be a problem in strength, and in the same manner as described above, in order to achieve reliable fastening, the thickness is such that an internal thread of 1 pitch or more is formed when the drilling tapping screw 1 penetrates. Then, a depression 2d is formed in advance in the center of the bottom of the concave surface 2a of the spring plate nut 2 by a punch or the like, so that the tapping position by the tip of the drill portion 1b of the drilling tapping screw 1 deviates from the center (so-called center deviation). It is also preferable to have a structure for preventing. Further, in order to prevent the spring plate nut 2 from rotating together when tapping with the drilling tapping screw 1, the surface of the edge portion 2c of the spring plate nut 2 that is in contact with the thin metal plate to be fastened is previously knurled, cuts, or uneven. It is preferable to apply anti-slip processing. When the drilling tapping screw 1 is tightened, the spring plate nut 2 is deformed and the bottom surface of the concave surface 2a comes into contact with the thin metal plate to be fastened. It is further preferable that the surface of the concave surface 2a is also subjected to the same anti-slip processing as described above so that the spring plate nut 2 does not easily loosen due to high vibration thereafter. The diameter of the spring plate nut 2 is preferably twice or more the screw diameter so that the spring plate nut 2 does not loosen even when used under high vibration. The thickness of each thin metal plate fastened by using the thin metal plate fastening member including the drilling tapping screw 1 and the spring plate nut 2 is preferably 0.5 to 3 mm. If it is less than 0.5 mm, it is difficult to form one or more female threads because the metal plate is too thin, and if it is more than 3 mm, when the drilling tapping screw 1 is screwed into the metal plate, the cutting edge of the drill part 1b becomes blunt and cannot penetrate. Because there is also. The number of thin metal plates to be fastened is not limited to the two shown in FIGS. 2 and 3, and may be three or more. In addition, the material of the thin metal plate to be fastened is not particularly limited, and not only fastening of different materials (for example, steel plate and aluminum alloy plate) but also of similar materials (for example, steel plate and steel plate, aluminum alloy plate). And an aluminum alloy plate). FIG. 3 shows a plurality (two in FIG. 3) of a thin metal plate fastening member including a drilling tapping screw 1 and a spring plate nut 2 according to the present invention (claims 1, 2, and 5). It is a figure explaining an example of the method of stacking and fastening thin metal plates. In FIG. 3, B is an electric drill, C is a work table for fastening, D is a plate fixing means, and E is a screw tip cutting means. As shown in FIG. 3, the fastening work table C is provided with a recess C2 for holding the spring plate nut 2 on its plate holding surface C1, and a hole C3 is further provided in the center of the bottom of the recess C2. When the tip of the drill portion 1b of the drilling tapping screw 1 penetrates the spring plate nut 2, it can be projected downward. Further, an electric drill B for screwing the drilling tapping screw 1 directly above the recess C2 is provided so as to be able to move up and down, and a plurality of stacked thin metal plates A are pressed against the plate holding surface C1 from above to fix the plate. The means D is configured to be movable up and down. As the plate fixing means D, for example, FIG.
A plurality of spring-loaded pressing members D1 are arranged around the space in which the electric drill B moves up and down, and the pressing members D1 are mechanically moved up and down in conjunction with the lifting of the electric drill B. Alternatively, the pressing member D1 may be made of ordinary steel, an electromagnet may be embedded in the plate holding surface C1 directly below the pressing member D1, and the pressing member D1 may be attached or detached depending on whether or not the electromagnet is energized. At the time of fastening, first, the spring plate nut 2 is fitted into the recess C2 with its concave surface side facing upward. It is desirable that the diameter of the recess C2 be made slightly larger than the diameter of the spring plate nut 2 so that the spring plate nut 2 can be fitted easily and the center position of the spring plate nut does not deviate too much after the fitting. Further, the depth of the recess C2 is set to be equal to or slightly shallower than the entire thickness of the spring plate nut 2, and when the plurality of thin metal plates A are pressed against the plate holding surface C1 by the plate fixing means D, the lowermost thin metal plate is pressed. It is desirable that the plate Ab and the spring plate nut 2 contact each other. That is, if the depth of the recess C2 is too deep, the spring plate nut 2 and the thin metal plate A at the bottom are
There is a gap between the drilling tapping screw 1 and the drilling tapping screw 1 and the drill 1b of the drilling tapping screw 1 turns around when the spring plate nut 2 is threaded. On the other hand, if the depth of the recess C2 is too shallow, This is because the spring plate nut 2 projects above the plate holding surface C1 and the thin metal plates A float above the plate holding surface C1 and the screwing operation of the drilling tapping screw 1 becomes unstable. Next, the plurality of stacked thin metal plates A are set on the plate holding surface C1 so that the position where the drilling tapping screw 1 is driven into the plurality of thin metal plates A is directly below the electric drill B. Then, the plate fixing means D is lowered to press and fix the plurality of thin metal plates A against the plate holding surface C1, and then the electric drill B is held by the drilling tapping screw 1 at its tip and lowered to make a plurality of screw tips. After contacting the upper surface A1 of the thin metal plate A, the drill B is rotated and the drilling tapping screw 1 is screwed into the plurality of thin metal plates A (At, Ab) by the drill portion 1b. A plurality of thin metal plates A (A
After passing through t, Ab), the spring plate nut 2 is further punched and penetrated. Here, as shown in FIG. 2, the shaft portion 1a of the drilling tapping screw 1 is threaded, but due to the structure of the screw processing tool used for thread formation, at least the incomplete screw portion 1e is provided immediately below the head portion 1c. There is always about 0.5 to 1 pitch, the drilling tapping screw 1 is screwed in, and the head 1c thereof is the upper surface A of the plurality of thin metal plates A.
After further contacting with No. 1 and further tightening this incomplete screw portion 1e, the head portion 1c of the drilling tapping screw 1 itself is constrained by the upper surface A1 and cannot move downward any more, while rotating at that position. , The threaded portion 1d of the drilling tapping screw 1 is screwed into the spring plate nut 2, and the spring plate nut 2 is constrained to the lower surface A2 of the plurality of thin metal plates A by its edge portion 2c, so that the concave surface 2a side is the lower surface A2 side. Then, the spring plate nut 2 is elastically deformed (may be partially plastically deformed), and the spring plate nut 2 is strongly pressed against the lower surface A2 via the edge portion 2c. From the above, a plurality of thin metal plates A (At, A
Since b) is screwed by the drilling tapping screw 1 and is strongly pressed by the elastically deformed spring plate nut 2, rotation of the plate material which is a problem in the rivet connection does not occur. Further, since burrs (adhered cuttings, end projections, etc.) formed when the lowermost thin metal plate Ab is drilled by the drilling tapping screw 1 are hidden by the spring plate nut 2, aesthetics of the fastening portion are important. Even in such a case, there is an advantage that no work such as deburring is required after the fastening work. When the tip portion of the drill portion 1b penetrating the spring plate nut 2 poses an aesthetic problem, for example, as shown in FIG. 3, the screw tip cutting-off means E configured such that the blade tip protrudes into the hole portion C3. Etc. should be provided. As another embodiment of the present invention (claims 1, 2, and 5), FIG.
A non-threaded portion 1f having no thread cut on the shaft portion 1a immediately below the head portion 1c, as shown in FIG.
The drilling tapping screw 1 which is equal to or slightly longer than the total thickness of Ab) may be used. In this case, this drilling tapping screw 1 is screwed in until its head 1c contacts the upper surface A1 of the plurality of thin metal plates A, and the screw portion 1d is completely passed through the total thickness of the plurality of thin metal plates A (At, Ab). And then drilling tapping screw 1
Continuing to rotate, multiple thin metal plates A (At, Ab)
Since the non-screwed portion 1f exists in the portion having the thickness of 1, the screw portion 1d is screwed into the spring plate nut 2, so that the concave surface 2a side of the spring plate nut 2 is elastic toward the lower surface A2 side of the thin metal plate A. It is drawn while deforming (partially plastically deforming), and finally the bottom of the concave surface 2a comes into contact with the lower surface A2. Therefore, in this case, unlike the case of FIG.
The plurality of thin metal plates A (At, Ab) and the drilling tapping screw 1 are not screwed together, but instead, the spring plate nut 2 is deformed more largely than in the case of FIG. 2 and pressed against the lower surface A2 with a stronger elastic force. At the same time, the contact area between the spring plate nut 2 and the lower surface A2 increases and a larger frictional force is generated, so that the problem of loosening does not occur even under high vibration. FIG. 5 is a cross-sectional view showing a state in which two thin metal plates are fastened by a thin metal plate fastening member according to an embodiment of the present invention (claims 3, 4, and 6). In FIG. 5, the drilling tapping screw 1 and the spring plate nut 2 are the same as those shown in FIG. In FIG. 5, reference numeral 3 is a disc spring washer, which is formed of a rigid material such as carbon steel, stainless steel, and high-strength aluminum alloy into a dish shape without screw holes, like the spring plate nut 2. And
If the thickness is too thin, it causes a problem in strength, and in order to achieve reliable fastening, the thickness is such that an internal thread of 1 pitch or more is formed when the drilling tapping screw 1 penetrates. Then, a depression (not shown) is formed in advance by a punch or the like in the center of the top of the convex surface 3b of the disc spring washer 3.
It is also preferable to have a structure that prevents the tapping position of the drilling tapping screw 1 by the tip of the drill portion 1b from deviating from the center (so-called center deviation). Furthermore, in order to prevent the spring plate nut 2 from rotating together when tapping with the drilling tapping screw 1, the disc spring washer 3
It is preferable that the surface of the edge portion 3c that contacts the fastened thin metal plate At be knurled, cut out, or have a non-slip process such as unevenness, and the disc spring washer 3 is deformed by tightening the drilling tapping screw 1. Let the concave surface 3
When the fastening is performed such that a contacts the thin metal plate to be fastened, the same anti-slip processing is applied to the surface of the concave surface 3a so that the disc spring washer 3 is unlikely to loosen due to high vibration after fastening. More preferably. Further, it is preferable that the diameter of the disc spring washer 3 is equal to or larger than twice the screw diameter so that the disc spring washer 3 does not loosen even when used under high vibration. As a method of fastening a plurality of thin metal plates using this fastening member,
Although not shown, a spring plate nut 2 and a plurality of thin metal plates A are set in this order using a device similar to that of FIG. 3, and further, the concave surface 3a side of the disc spring washer 3 faces downward, After abutting on the upper surface A1, the drilling tapping screw 1 may be screwed in from the convex surface 3b side of the disc spring washer 3. By using the disc spring washer 3 in combination in addition to the drilling tapping screw 1 and the spring plate nut 2, more reliable fastening can be realized.
【発明の効果】以上述べたように、請求項1、2、5の
発明によれば、複数金属板、特に異種金属板を、板材や
締結部材の強度低下を招くことなく、また予めねじ穴を
形成しておく必要がなく、簡易かつ確実に締結できる。
また、請求項3、4、6の発明によれば、上記請求項
1、2、5の発明に比べ、より確実な締結を実現でき
る。すなわち、本発明により、複数金属板の締結作業の
作業性が大幅に改善されるとともに、締結部の耐久性が
向上し、構造物の製造コスト低減が達成できる。As described above, according to the inventions of claims 1, 2 and 5, a plurality of metal plates, especially different metal plates can be preliminarily screwed without causing a reduction in strength of the plate material or the fastening member. It is not necessary to form the above, and it can be fastened easily and surely.
Further, according to the inventions of claims 3, 4, and 6, as compared with the inventions of claims 1, 2, and 5, more reliable fastening can be realized. That is, according to the present invention, the workability of the fastening work of a plurality of metal plates is significantly improved, the durability of the fastening portion is improved, and the manufacturing cost of the structure can be reduced.
【図1】本発明の実施の形態に係る薄金属板締結部材を
構成するばね板ナットの断面図である。FIG. 1 is a sectional view of a spring plate nut that constitutes a thin metal plate fastening member according to an embodiment of the present invention.
【図2】本発明(請求項1、2、5)の実施の形態に係
る薄金属板締結部材により複数薄金属板を締結した状態
を示す断面図である。FIG. 2 is a cross-sectional view showing a state in which a plurality of thin metal plates are fastened by a thin metal plate fastening member according to an embodiment of the present invention (claims 1, 2, and 5).
【図3】本発明(請求項1、2、5)の実施に係る薄金
属板締結部材を用いて複数薄金属板を締結する方法の一
例を説明する図である。FIG. 3 is a diagram illustrating an example of a method of fastening a plurality of thin metal plates using a thin metal plate fastening member according to an embodiment of the present invention (claims 1, 2, and 5).
【図4】本発明(請求項1、2、5)の別の実施の形態
に係る薄金属板締結部材により複数薄金属板を締結した
状態を示す断面図である。FIG. 4 is a cross-sectional view showing a state in which a plurality of thin metal plates are fastened by a thin metal plate fastening member according to another embodiment of the present invention (claims 1, 2, and 5).
【図5】本発明(請求項3、4、6)の実施の形態に係
る薄金属板締結部材により複数薄金属板を締結した状態
を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which a plurality of thin metal plates are fastened by a thin metal plate fastening member according to an embodiment of the present invention (claims 3, 4, and 6).
1…ドリリングタッピンねじ
1a…軸部、1b…ドリル部、1c…頭部、1d…ねじ
部、1e…不完全ねじ部、1f…非ねじ部
2…ばね板ナット
2a…凹面、2c…縁部、2d…窪み
3…皿ばね座金
3a…凹面、3b…凸面、3c…縁部
A…複数薄金属板
At…最上部の薄金属板、Ab…最下部の薄金属板、
A1…上面、A2…下面
B…電動ドリル
C…締結用作業台
C1…板保持面、C2…凹部、C3…孔部
D…板固定手段
D1…押え部材
E…ねじ先端切り落とし手段DESCRIPTION OF SYMBOLS 1 ... Drilling tapping screw 1a ... Shaft part, 1b ... Drill part, 1c ... Head part, 1d ... Thread part, 1e ... Incomplete thread part, 1f ... Non-thread part 2 ... Spring plate nut 2a ... Concave surface, 2c ... Edge part 2d ... Dimple 3 ... Disc spring washer 3a ... Concave surface, 3b ... Convex surface, 3c ... Edge A ... Plural thin metal plates At ... Top thin metal plate, Ab ... Bottom thin metal plate, A1 ... Top surface, A2 ... Lower surface B ... Electric drill C ... Fastening work table C1 ... Plate holding surface, C2 ... Recess, C3 ... Hole D ... Plate fixing means D1 ... Pressing member E ... Screw tip cutting means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 相本 秀一 兵庫県神戸市西区高塚台1丁目5番5号 株式会社神戸製鋼所神戸総合技術研究所内 (72)発明者 杵渕 雅男 兵庫県神戸市西区高塚台1丁目5番5号 株式会社神戸製鋼所神戸総合技術研究所内 Fターム(参考) 3J001 FA02 GA01 GB01 HA02 JA01 JB01 KA19 KA26 KB01 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Shuichi Aimoto 1-5-5 Takatsukadai, Nishi-ku, Kobe City, Hyogo Prefecture Kobe Steel Co., Ltd.Kobe Research Institute (72) Inventor Masao Kuchibuchi 1-5-5 Takatsukadai, Nishi-ku, Kobe City, Hyogo Prefecture Kobe Steel Co., Ltd.Kobe Research Institute F term (reference) 3J001 FA02 GA01 GB01 HA02 JA01 JB01 KA19 KA26 KB01
Claims (6)
リングタッピンねじと、ばね板ナットとの組合せにより
構成された薄金属板締結部材であって、前記ドリリング
タッピンねじは、前記薄金属板板厚より小さいピッチの
ねじ山が形成された軸部と、該軸部の一端部に形成され
たドリル部と、前記軸部の他端部に形成された軸部直径
より大径の頭部とからなり、前記ばね板ナットは、皿形
状でねじ穴を有さず、前記ピッチより大きな板厚を備え
たことを特徴とする薄金属板締結部材。1. A thin metal plate fastening member composed of a combination of a drilling tapping screw and a spring plate nut, which are fastened by stacking a plurality of thin metal plates, wherein the drilling tapping screw is the thin metal plate. A shaft portion formed with a thread having a pitch smaller than the plate thickness, a drill portion formed at one end of the shaft portion, and a head having a diameter larger than the diameter of the shaft portion formed at the other end of the shaft portion. The thin metal plate fastening member is characterized in that the spring plate nut is disc-shaped, has no screw holes, and has a plate thickness larger than the pitch.
前記薄金属板の一方の面に、前記ばね板ナットがその凹
面側を向けて当接され、前記ドリリングタッピンねじが
前記複数薄金属板の他方の面側からねじ込まれることに
より締結することを特徴とする請求項1に記載の薄金属
板締結部材。2. When fastening a plurality of the thin metal plates,
The spring plate nut is abutted on one surface of the thin metal plate with its concave surface side facing, and the drilling tapping screw is screwed from the other surface side of the plurality of thin metal plates for fastening. The thin metal plate fastening member according to claim 1.
リングタッピンねじとばね板ナットと、皿ばね座金との
組合せにより構成された薄金属板締結部材であって、前
記ドリリングタッピンねじは、前記薄金属板板厚より小
さいピッチのねじ山が形成された軸部と、該軸部の一端
部に形成されたドリル部と、前記軸部の他端部に形成さ
れた軸部直径より大径の頭部とからなり、前記ばね板ナ
ット及び前記皿ばね座金は、ともに皿形状でねじ穴を有
さず、前記ピッチより大きな板厚を備えたことを特徴と
する薄金属板締結部材。3. A thin metal plate fastening member configured by a combination of a drilling tapping screw, a spring plate nut, and a disc spring washer for stacking and fastening a plurality of thin metal plates, wherein the drilling tapping screw comprises: A shaft portion formed with threads having a pitch smaller than the thickness of the thin metal plate, a drill portion formed at one end portion of the shaft portion, and a shaft portion diameter larger than the shaft portion formed at the other end portion of the shaft portion. A thin metal plate fastening member comprising a head portion having a diameter, wherein the spring plate nut and the disc spring washer are both disc-shaped and have no screw holes, and have a plate thickness larger than the pitch.
前記薄金属板の一方の面に、前記ばね板ナットがその凹
面側を向けて当接されるとともに、他方の面に、前記皿
ばね座金がその凹面側を向けて当接され、前記ドリリン
グタッピンねじが前記皿ばね座金側からねじ込まれるこ
とにより締結することを特徴とする請求項3に記載の薄
金属板締結部材。4. When fastening a plurality of the thin metal plates,
The spring plate nut is abutted on one surface of the thin metal plate with its concave surface side facing, and the other disc spring washer is abutted on its other surface with its concave surface side facing. The thin metal plate fastening member according to claim 3, wherein the thin metal plate fastening member is fastened by screwing in a screw from the disc spring washer side.
トとの組合せにより構成された薄金属板締結部材によ
り、薄金属板を複数枚重ねて締結する薄金属板締結方法
であって、前記ドリリングタッピンねじは、前記薄金属
板板厚より小さいピッチのねじ山が形成された軸部と、
該軸部の一端部に形成されたドリル部と、前記軸部の他
端部に形成された軸直径より大径の頭部とからなり、前
記ばね板ナットは、皿形状でねじ穴を有さず、前記ピッ
チより大きな板厚を備え、前記薄金属板の一方の面に、
前記ばね板ナットをその凹面側を向けて当接し、前記ド
リリングタッピンねじを前記薄複数金属板の他方の面側
からねじ込んで前記ばね板ナットまで貫通させ、前記ば
ね板ナットを前記複数薄金属板の一方の面側に変形させ
ることにより締結することを特徴とする薄金属板締結方
法。5. A thin metal plate fastening method for fastening a plurality of thin metal plates by stacking them together by a thin metal plate fastening member composed of a combination of a drilling tapping screw and a spring plate nut. Is a shaft portion formed with a thread having a pitch smaller than the thin metal plate thickness,
The spring plate nut has a dish shape and a screw hole, and a drill part formed at one end of the shaft part and a head part formed at the other end of the shaft part having a diameter larger than the shaft diameter. Instead, with a plate thickness larger than the pitch, on one surface of the thin metal plate,
The spring plate nut is abutted with its concave side facing, and the drilling tapping screw is screwed from the other surface side of the thin metal plate to the spring plate nut, and the spring plate nut is inserted into the thin metal plates. A method for fastening a thin metal plate, characterized in that the fastening is performed by deforming the one surface side.
と皿ばね座金との組合せにより構成された薄金属板締結
部材により、薄金属板を複数枚重ねて締結する薄金属板
締結方法であって、前記ドリリングタッピンねじは、前
記薄金属板板厚より小さいピッチのねじ山が形成された
軸部と、該軸部の一端部に形成されたドリル部と、前記
軸部の他端部に形成された軸直径より大径の頭部とから
なり、前記ばね板ナット及び前記皿ばね座金は、ともに
皿形状でねじ穴を有さず、前記ピッチより大きな板厚を
備え、前記薄金属板の一方の面に、前記ばね板ナットを
その凹面側を向けて当接するとともに、他方の面に、前
記皿ばね座金をその凹面側を向けて当接し、前記ドリリ
ングタッピンねじを前記皿ばね座金側からねじ込んで前
記ばね板ナットまで貫通させ、前記ばね板ナットを前記
複数薄金属板の一方の面側に変形させるとともに、前記
皿ばね座金を前記複数薄金属板の他方の面側に変形させ
ることにより締結することを特徴とする薄金属板締結方
法。6. A thin metal plate fastening method for stacking and fastening a plurality of thin metal plates with a thin metal plate fastening member configured by a combination of a drilling tapping screw, a spring plate nut, and a disc spring washer, The drilling tapping screw is formed on a shaft portion on which a thread having a pitch smaller than the thin metal plate thickness is formed, a drill portion formed on one end portion of the shaft portion, and the other end portion of the shaft portion. Consisting of a head having a diameter larger than the shaft diameter, the spring plate nut and the disc spring washer are both disc-shaped and have no screw holes, and have a plate thickness larger than the pitch, and one of the thin metal plates While abutting the surface of the spring plate nut with its concave side facing, contact the other side of the disk spring washer with its concave side facing, and screwing the drilling tapping screw from the disk spring washer side. Up to the spring plate nut The spring plate nut is penetrated and deformed to one surface side of the plurality of thin metal plates, and the disc spring washer is deformed to the other surface side of the plurality of thin metal plates for fastening. Thin metal plate fastening method.
Priority Applications (1)
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JP2001215259A JP2003028123A (en) | 2001-07-16 | 2001-07-16 | Fastening member for thin metal plate and fastening method for thin metal plate |
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Application Number | Priority Date | Filing Date | Title |
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JP2001215259A JP2003028123A (en) | 2001-07-16 | 2001-07-16 | Fastening member for thin metal plate and fastening method for thin metal plate |
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JP2003028123A true JP2003028123A (en) | 2003-01-29 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102808826A (en) * | 2011-11-22 | 2012-12-05 | 凯迈(洛阳)环测有限公司 | Locking mechanism for tubular vertical rod and tubular vertical rod device employing locking mechanism |
JP7281009B1 (en) | 2022-11-07 | 2023-05-24 | 大成建設株式会社 | Building materials and fittings |
-
2001
- 2001-07-16 JP JP2001215259A patent/JP2003028123A/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102808826A (en) * | 2011-11-22 | 2012-12-05 | 凯迈(洛阳)环测有限公司 | Locking mechanism for tubular vertical rod and tubular vertical rod device employing locking mechanism |
CN102808826B (en) * | 2011-11-22 | 2014-05-21 | 凯迈(洛阳)环测有限公司 | Locking mechanism for tubular vertical rod and tubular vertical rod device employing locking mechanism |
JP7281009B1 (en) | 2022-11-07 | 2023-05-24 | 大成建設株式会社 | Building materials and fittings |
JP2024067665A (en) * | 2022-11-07 | 2024-05-17 | 大成建設株式会社 | Building materials and fittings |
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