JPS6143563B2 - - Google Patents
Info
- Publication number
- JPS6143563B2 JPS6143563B2 JP56192040A JP19204081A JPS6143563B2 JP S6143563 B2 JPS6143563 B2 JP S6143563B2 JP 56192040 A JP56192040 A JP 56192040A JP 19204081 A JP19204081 A JP 19204081A JP S6143563 B2 JPS6143563 B2 JP S6143563B2
- Authority
- JP
- Japan
- Prior art keywords
- head
- shank portion
- shank
- flange
- end side
- 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.)
- Expired
Links
- 238000010079 rubber tapping Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims 2
- 238000005520 cutting process Methods 0.000 description 18
- 239000002699 waste material Substances 0.000 description 14
- 238000005096 rolling process Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage 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
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0078—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw with a shaft of non-circular cross-section or other special geometric features of the shaft
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Contacts (AREA)
- Dowels (AREA)
Description
【発明の詳細な説明】
本発明は、プラスターボード等を薄板金属建築
スタンドに取り付けるための鋭くとがつたタツピ
ングねじに関し、特にプラスターボード等のねじ
込みくずの落ちこぼれを防止できるようにしたタ
ツピングねじに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sharp tapping screw for attaching plasterboard or the like to a thin metal construction stand, and more particularly to a tapping screw that can prevent screwed-in debris from falling out of the plasterboard or the like.
従来、この種のタツピングねじとしては例えば
特公昭52−180号公報に示されるものがあり、こ
れは第１図に示すように、先端側にドリル先端部
ａを有するシヤンク部ｂと、シヤンク部ｂの後端
側に一体に設けられた頭部ｃとからなつている。
頭部ｃは皿形であつて、シヤンク部ｂ寄りの環状
さらい面ｄと、これの後端側の端縁ｅと、これに
連続した滑らかな凹曲面ｆとを有している。 Conventionally, this type of tapping screw has been disclosed in Japanese Patent Publication No. 52-180, for example, and as shown in FIG. b and a head c integrally provided on the rear end side.
The head c is dish-shaped and has an annular flushing surface d near the shank portion b, an edge e on the rear end side of this, and a smooth concave curved surface f continuous thereto.
このタツピングねじ（ねじ締着具）の場合、プ
ラスターボード等にねじ込んだ際発生するねじ込
みくずは、頭部ｃのさらい面ｄ、端縁ｅ、凹曲面
ｆによつてプラスターボード等の表面に出るのを
押える構造となつている。 In the case of this tapping screw (screw fastener), the screwing debris generated when screwed into a plasterboard, etc., is prevented from coming out to the surface of the plasterboard, etc. by the flushing surface d of the head c, the edge e, and the concave curved surface f. It has a structure.
しかし、このねじ締着具は頭部ｃのみで切削く
ずを内部に押え込もうとするので、或る程度の効
果はあるが完全とは云いきれない面があつた。 However, this screw fastener tries to hold down the cutting waste inside only with the head c, so although it is somewhat effective, it cannot be said to be perfect.
また、従来品の他の例として特公昭52−109070
号公報に示されるものがあり、これは第２図に示
すように、ドリル先端部ａを有し頭部ｃを設けら
れたシヤンク部ｂの頭部ｃ側に、逆推進ねじｇを
設けたもので、さらにこの逆推進ねじｇの外径
を、ドリル先端部ａ側の本来の推進ねじの外径よ
りも大きくしたものである。 In addition, as another example of conventional products,
As shown in Fig. 2, there is a drill in which a reverse propulsion screw g is provided on the head c side of a shank part b having a drill tip a and a head c. Further, the outer diameter of this reverse propulsion screw g is made larger than the outer diameter of the original propulsion screw on the side of the drill tip a.
しかし、一部のねじを逆ねじにした位では、切
削の量の方が大であるため切削くずの一部が外へ
食み出すなどの欠点があつた。また、一部に逆ね
じを転造で形成する場合は転造ダイスが複雑にな
る欠点もあつた。 However, when some of the screws were reverse-threaded, the amount of cutting was greater, so there were drawbacks such as some of the cutting waste sticking out. In addition, when forming a reverse thread in a part by rolling, there was a drawback that the rolling die was complicated.
本発明は、このような従来の問題点に着目して
なされたもので、切削くずの落ちこぼれを完全に
防止できるようにしたタツピングねじを提供する
ことを目的とする。 The present invention was made in view of these conventional problems, and it is an object of the present invention to provide a tapping screw that can completely prevent cutting waste from falling out.
本発明の要旨は、ねじ頭部の凹曲面に隣接する
シヤンク部の周りに各々円形状をした複数の各フ
ランジ部が一体に突出形成され、これらの各フラ
ンジ部の外周縁はねじ山の外径よりも大きくて且
つ頭部の外径より小さい外径を有し、外周縁とシ
ヤンク部とを結ぶ各辺による突出部の断面が略三
角形状であると共に、少くとも頭部側に面する一
辺が傾斜状に設けられ、各フランジ部の外径はシ
ヤンク部の先端側に位置するものより頭部側に位
置するものの方が次第に大径となるよう形成させ
たことにある。 The gist of the present invention is that a plurality of circular flange portions are integrally formed around a shank portion adjacent to a concave curved surface of a screw head, and the outer peripheral edge of each of these flange portions is formed on the outside of the screw thread. The projecting portion has an outer diameter larger than the diameter and smaller than the outer diameter of the head, and the cross section of the protruding portion formed by each side connecting the outer peripheral edge and the shank portion is approximately triangular, and faces at least the head side. One side is provided in an inclined shape, and the outer diameter of each flange portion is formed such that the outer diameter of the flange portion is gradually larger on the head side than on the tip side of the shank portion.
以下、第３図〜第８図に示す実施例により本発
明を詳細に説明する。 Hereinafter, the present invention will be explained in detail with reference to embodiments shown in FIGS. 3 to 8.
第３〜５図は本発明の第１実施例を示し、この
タツピングねじはシヤンク部１を具えており、シ
ヤンク部１は先端側に尖鋭部２を有している。ま
た、シヤンク部１の後端側には、図示しないプラ
ス・ドライバーを差し込まれる頭部３が一体に設
けられている。 3 to 5 show a first embodiment of the present invention, in which the tapping screw is provided with a shank portion 1, and the shank portion 1 has a sharp portion 2 on the distal end side. Further, on the rear end side of the shank portion 1, a head 3 into which a Phillips screwdriver (not shown) is inserted is integrally provided.
上記シヤンク部１の先端側の周囲には、少なく
とも１条のねじ山４が一体に形成されている。ま
た、該ねじ山４の後端側および前記頭部３の間に
おいて、シヤンク部１の周囲には複数の（本実施
例では３つの）フランジ部５が一体に設けられて
いる。 At least one thread 4 is integrally formed around the distal end side of the shank portion 1. Furthermore, a plurality of (three in this embodiment) flange portions 5 are integrally provided around the shank portion 1 between the rear end side of the thread 4 and the head portion 3.
フランジ部５はシヤンク部１の周りで軸対称な
円形形状を有し、第５図で詳細に示されるよう
に、頭部３側に面した表面６がシヤンク部１に対
して傾斜し、表面６の内周縁７が頭部３に接近
し、且つ外周縁８はシヤンク部１の先端寄りに位
置している。一方、フランジ部５のシヤンク部１
先端側に面した表面９は、シヤンク部１に対して
直交し、また共通の外周縁８で表面６と交差して
いる。 The flange part 5 has a circular shape that is axially symmetrical around the shank part 1, and as shown in detail in FIG. The inner circumferential edge 7 of the shank portion 6 is close to the head 3, and the outer circumferential edge 8 is located near the tip of the shank portion 1. On the other hand, the shank portion 1 of the flange portion 5
The distal facing surface 9 is perpendicular to the shank 1 and intersects the surface 6 at a common outer peripheral edge 8 .
更に、フランジ部５の最大円形外周（外周縁
８）を含む平面がシヤンク部１の軸心に対して直
交されると共に、フランジ部５の最大外径（外周
縁８の径）は、前記ねじ山４の外径よりも大きく
且つ、後述するように円形皿形である前記頭部３
の外径よりも小さく設定されている。 Further, a plane including the maximum circular outer circumference (outer circumferential edge 8) of the flange portion 5 is perpendicular to the axis of the shank portion 1, and the maximum outer diameter of the flange portion 5 (diameter of the outer circumferential edge 8) is The head 3 is larger than the outer diameter of the peak 4 and has a circular dish shape as described later.
is set smaller than the outer diameter of the
フランジ部５はシヤンク部１の先端側から遠い
もの程、例えばテーパー角に沿つて外径を大き
くなるようにする。この結果、フランジ部５は数
段に亘つて少しずつ切削くずを押え込むので、無
理なく押えることができ、完全に押え込むことが
容易となる。 The outer diameter of the flange portion 5 is made larger as it is farther from the tip side of the shank portion 1, for example, along the taper angle. As a result, the flange portion 5 presses down the cutting waste little by little over several stages, so it can press the cutting waste easily and completely.
尚、前記したように頭部３は円形皿形であつ
て、フランジ部５に面した側に滑らかな凹曲面１
０を有し、該凹曲面１０により切削くずを押える
役目をする。頭部３の他側は、プラスターボード
等の表面と一致するように偏平とされ、例えばプ
ラス・ドライバーを差し込まれるよう十字溝１１
が形成されている。 As mentioned above, the head 3 has a circular dish shape, and has a smooth concave curved surface 1 on the side facing the flange 5.
0, and the concave curved surface 10 serves to suppress cutting waste. The other side of the head 3 is flat to match the surface of a plasterboard, etc., and has a cross groove 11 into which a Phillips screwdriver can be inserted, for example.
is formed.
上記タツピングねじの作用を説明すると、尖鋭
部２でプラスターボード等にせん孔し、更に突き
進んで薄板状金属板にせん孔し、ねじ立てを行な
う。このとき、プラスターボード等の切削くずは
ねじ山４周辺部より後方へ押し出される。しか
し、後方に押し出された切削くずは、フランジ部
５の抵抗を受けてフランジ部５間の空間に押し込
められる。 To explain the function of the above-mentioned tapping screw, the sharp portion 2 punches a hole in a plaster board, etc., and then penetrates further to punch a hole in a thin metal plate to tap the screw. At this time, cutting waste such as plasterboard is pushed out from the periphery of the thread 4 to the rear. However, the cutting waste pushed out backward is pushed into the space between the flange parts 5 due to the resistance of the flange parts 5.
フランジ部５が複数であるから、更に厚い板厚
のプラスターボードにも使用できる。とくに、フ
ランジ部５の外径がねじ山の径より大径で且つ頭
部３側のもの程、次第に大きくなつているので、
排出されようとする切削くづをプラスターボード
等に押し付けるように作用して阻止すると共に、
切削くずを小径のフランジ部から大径のフランジ
部までの間に少しずつ数段に亘つて押し込んでい
くので、切削くずを落ちこぼすことなく完全に押
し込むことができる。 Since there are a plurality of flange portions 5, it can also be used for thicker plasterboards. In particular, since the outer diameter of the flange portion 5 is larger than the diameter of the thread and gradually increases toward the head 3,
It works to prevent the cutting waste from being discharged by pressing it against plasterboard, etc., and
Since the cutting waste is pushed little by little in several steps between the small diameter flange part and the large diameter flange part, the cutting waste can be completely pushed in without falling out.
また、フランジ部の表面６，９の交差角を小さ
くし、且つフランジ部５の外径を大きくすること
によつて切削くず収納空間は更に大きくなる。な
お、フランジ部５から切削くずが食み出たとして
も最終的に頭部３の凹曲面１０によつて完全に押
え込まれる。 Further, by reducing the intersection angle of the surfaces 6 and 9 of the flange portion and increasing the outer diameter of the flange portion 5, the cutting waste storage space can be further enlarged. Note that even if cutting waste protrudes from the flange portion 5, it is eventually completely suppressed by the concave curved surface 10 of the head 3.
第６図は本発明の第二実施例を示し、フランジ
部５を例えば３つのように複数設け、且つこれら
のフランジ部５は、シヤンク部１の先端側から遠
いもの程、テーパー角θに沿つて次第に外径が大
きくなるようにしてある。また、フランジ部５の
表面６，９の交差角は、60゜、45゜、30゜のよう
に、シヤンク部１の先端側から遠いもの程、小さ
くなるようにしてある。 FIG. 6 shows a second embodiment of the present invention, in which a plurality of flange portions 5, for example three, are provided, and the farther the flange portions 5 are from the tip side of the shank portion 1, the more the flange portions 5 are arranged along the taper angle θ. The outer diameter is gradually increased. Further, the intersecting angle between the surfaces 6 and 9 of the flange portion 5 is made smaller as the distance from the tip side of the shank portion 1 increases, such as 60°, 45°, and 30°.
このように、フランジ部５の外径がねじ山の径
より大径で且つ次第に異ならせたことによつて、
切削くずをプラスターボード等に押し付けるよう
に作用すると共に、数段階に亘つて少しずつ先端
側のものから押し込むことになるので、削くず等
を完全に外に逃げ出さないようにすることができ
る。 In this way, by making the outer diameter of the flange portion 5 larger than the diameter of the thread and gradually varying the diameter,
It acts to press the cutting chips against the plaster board, etc., and gradually pushes them in from the tip side over several stages, so it is possible to prevent the chips from escaping completely.
以上説明してきたように本発明によると、シヤ
ンク部にねじ山の径より大径で且つ次第に径を拡
大させた複数の軸対称的円形のフランジ部を設け
たので、ねじ山による切削くずをフランジ部で押
え、万一フランジ部から食み出た切削くずは頭部
の凹曲面で押えることができ、従つて切削くずの
上部への脱出を完全に防止でき、締付後のヘラ塗
り及びペーパー掛けの工数が全く不要になり、そ
のため、作業コストの大幅な低減を可能にするこ
とができる。しかも、本発明のタツピングねじ
は、フランジ部が簡単な形状であり、転造ダイス
も簡単で歩溜りがよく、全て転造等の従来と同一
方法で安価に量産することができる。 As explained above, according to the present invention, a plurality of axially symmetrical circular flanges having a diameter larger than the diameter of the screw thread and gradually increasing in diameter are provided in the shank portion, so that cutting waste caused by the screw thread is removed from the flange. The concave curved surface of the head can hold down any cutting chips that protrude from the flange, completely preventing the cutting chips from escaping to the top, making it easy to apply with a spatula or hang paper after tightening. This eliminates the need for man-hours at all, making it possible to significantly reduce work costs. In addition, the tapping screw of the present invention has a simple flange shape, a simple rolling die, high yield, and can be mass-produced at low cost using the same conventional methods such as rolling.
第１図は、従来のタツピングねじの正面図、第
２図は従来のタツピングねじの他の例の正面図、
第３図は本発明の第一実施例に係るタツピングね
じの正面図、第４図は第３図の左側面図、第５図
は第３図の一部を切り欠いた要部拡大図、第６図
は第二実施例の要部拡大図である。
〔符号の説明〕、１……シヤンク部、２……尖
鋭部、３……頭部、４……ねじ山、５……フラン
ジ部、１０……凹曲面。
FIG. 1 is a front view of a conventional tapping screw, FIG. 2 is a front view of another example of a conventional tapping screw,
3 is a front view of the tapping screw according to the first embodiment of the present invention, FIG. 4 is a left side view of FIG. 3, and FIG. 5 is an enlarged view of the main part of FIG. FIG. 6 is an enlarged view of the main parts of the second embodiment. [Explanation of symbols] 1...Shank part, 2...Sharp part, 3...Head, 4...Thread, 5...Flange part, 10...Concave curved surface.
Claims (1)
ヤンク部の後端側に一体に設けられた頭部と、前
記シヤンク部の先端側の周囲に一体に形成された
ねじ山と、該ねじ山の後端側と前記頭部の間でシ
ヤンク部周囲に一体に突出形成された複数の各フ
ランジ部とを具え、前記頭部は円形の皿形であつ
て、前記フランジ部に面した側に滑らかな凹曲面
を有し、且つ他側は偏平に形成され、前記各フラ
ンジ部は頭部の凹曲面に隣接するシヤンク部の周
りで各々対称な円形形状を有し、各フランジ部
は、前記ねじ山の外径よりも大きくて且つ前記頭
部の外径よりも小さい外径の外周縁を有すると共
に、等該外周縁とシヤンク部とを結ぶシヤンク部
の先端側に面した表面がシヤンク部の軸心に対し
て直交し、また外周縁とシヤンク部とを結ぶ頭部
側に面した表面がシヤンク部の軸心に対して傾斜
し、これらの各フランジ部の外径はシヤンク部の
先端側に位置するものより、頭部側に位置するも
のの方が次第に大径となるよう成形させたことを
特徴とするタツピングねじ。 ２ 前記各フランジ部において、外周縁がシヤン
ク部を結ぶシヤンク部の先端側に面した表面と頭
部側に面した表面との交差角は、シヤンク部の先
端側に位置するものより頭部側に位置するものの
方が次第に鋭角状になるよう形成させた請求の範
囲第１項記載のタツピングねじ。 ３ 先端側に尖鋭部を有するシヤンク部と、該シ
ヤンク部の後端側に一体に設けられた頭部と、前
記シヤンク部の先端側の周囲に一体に形成された
ねじ山と、該ねじ山の後端側と前記頭部の間でシ
ヤンク部周囲に一体に突出形成された複数の各フ
ランジ部とを具え、前記頭部は円形の皿形であつ
て、前記フランジ部に面した側に滑らかな凹曲面
を有し、且つ他側は偏平に形成され、前記各フラ
ンジ部は頭部の凹曲面に隣接するシヤンク部の周
りで各々対称な円形形状を有し、各フランジ部
は、前記ねじ山の外径よりも大きくて且つ前記頭
部の外径よりも小さい外径の外周縁を有すると共
に、当該外周縁とシヤンク部とを結ぶシヤンク部
の先端側および頭部側の各表面がシヤンク部の軸
心に対して各々傾斜し、これらの各フランジ部は
シヤンク部の先端側に位置するものより、頭部側
に位置するものの方が次第に大径となるよう成形
させたことを特徴とするタツピングねじ。 ４ 前記各フランジ部において、外周縁がシヤン
ク部を結ぶシヤンク部の先端側に面した表面と頭
部側に面した表面との交差角は、シヤンク部の先
端側に位置するものより頭部側に位置するものの
方が次第に鋭角状になるよう形成させた請求の範
囲第３項記載のタツピングねじ。[Scope of Claims] 1. A shank portion having a sharp portion on the distal end side, a head integrally provided on the rear end side of the shank portion, and a screw integrally formed around the distal end side of the shank portion. a thread, and a plurality of flanges integrally formed around the shank portion between the rear end side of the thread and the head, the head having a circular dish shape; The flange portion has a smooth concave curved surface on the side facing the head, and the other side is formed flat, and each of the flange portions has a circular shape that is symmetrical around the shank portion adjacent to the concave curved surface of the head, Each flange portion has an outer circumferential edge having an outer diameter larger than the outer diameter of the thread and smaller than the outer diameter of the head, and has an outer circumferential edge on the distal end side of the shank portion connecting the outer circumferential edge and the shank portion. The facing surface is perpendicular to the axis of the shank part, and the surface facing the head side connecting the outer peripheral edge and the shank part is inclined with respect to the axis of the shank part. A tapping screw characterized in that the diameter of the screw located on the head side of the shank portion is gradually larger than that of the screw located on the tip side of the shank portion. 2 In each of the above flange parts, the intersection angle between the surface facing the tip side of the shank part and the surface facing the head side, where the outer peripheral edge connects the shank part, is closer to the head side than the surface facing the head side of the shank part. 2. The tapping screw according to claim 1, wherein the tapping screw is formed so that the angle gradually becomes more acute. 3. A shank portion having a sharp portion on the distal end side, a head integrally provided on the rear end side of the shank portion, a screw thread integrally formed around the distal end side of the shank portion, and the screw thread. a plurality of flange parts integrally formed around the shank part between the rear end side and the head part, the head part having a circular dish shape, and a side facing the flange part; It has a smooth concave curved surface, and the other side is formed flat, and each of the flange portions has a circular shape that is symmetrical around a shank portion adjacent to the concave curved surface of the head, and each flange portion has a circular shape that is symmetrical around the shank portion adjacent to the concave curved surface of the head. It has an outer circumferential edge with an outer diameter larger than the outer diameter of the screw thread and smaller than the outer diameter of the head, and each surface of the tip side and the head side of the shank portion connecting the outer circumferential edge and the shank portion is Each of these flanges is inclined with respect to the axis of the shank part, and each of these flange parts is formed so that the diameter of the flange part located on the head side becomes gradually larger than that located on the tip side of the shank part. Tapping screw. 4 In each of the flange portions, the intersection angle between the surface facing the tip side of the shank portion and the surface facing the head side where the outer peripheral edge connects the shank portion is closer to the head side than that located on the tip side of the shank portion. 4. The tapping screw according to claim 3, wherein the tapping screw is formed so that the angle gradually becomes more acute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56192040A JPS5894613A (en) | 1981-11-30 | 1981-11-30 | Tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56192040A JPS5894613A (en) | 1981-11-30 | 1981-11-30 | Tapping screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5894613A JPS5894613A (en) | 1983-06-04 |
| JPS6143563B2 true JPS6143563B2 (en) | 1986-09-29 |
Family
ID=16284600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56192040A Granted JPS5894613A (en) | 1981-11-30 | 1981-11-30 | Tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5894613A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60118015U (en) * | 1984-01-19 | 1985-08-09 | 株式会社 ト−プラ | screw |
| JPS6146337A (en) * | 1984-08-09 | 1986-03-06 | Shinjiyou Seisakusho:Kk | Production of self drilling screw with stopper and combination form rolling die for using in production of said screw |
-
1981
- 1981-11-30 JP JP56192040A patent/JPS5894613A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5894613A (en) | 1983-06-04 |
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