JPS627404B2 - - Google Patents
Info
- Publication number
- JPS627404B2 JPS627404B2 JP9886981A JP9886981A JPS627404B2 JP S627404 B2 JPS627404 B2 JP S627404B2 JP 9886981 A JP9886981 A JP 9886981A JP 9886981 A JP9886981 A JP 9886981A JP S627404 B2 JPS627404 B2 JP S627404B2
- Authority
- JP
- Japan
- Prior art keywords
- length
- degrees
- screw
- stage
- tip
- 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 description 6
- 238000005553 drilling Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Description
【発明の詳細な説明】
この発明は、建材用鉄板等を構築材に取付ける
ためのタツピングスクリユーに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tapping screw for attaching steel plates for building materials to construction materials.
タツピングスクリユーは、自ら鉄板に穿孔して
ねじ込まれていくものであるが、板を円滑に取付
けるためには穿孔性能が問題となる。その穿孔性
能はスクリユー主体の先端テーパ部の形状によつ
て左右される。 Tapping screws are screwed into steel plates by drilling themselves, but the drilling performance is an issue in order to smoothly attach the plates. The drilling performance is influenced by the shape of the tapered tip of the screw.
ところで、従来のスクリユーの先端テーパ部
は、その部分のねじ山頂の描く形状を製作上等の
理由から円弧状としている。このように円弧状に
形成されていると、スクリユーの先端部が板にね
じ込まれる角度（スクリユーの軸方向に対するね
じ山頂の描く線の角度）は尖端が大きく頭部に向
つて徐々に小さくなり、それだけねじ込み用の回
転トルクを必要とすることとなる。また、大きな
回転トルクを与えるとねじ山が破損する危惧もあ
る。 By the way, in the tapered tip portion of a conventional screw, the shape of the thread crest at that portion is arcuate for manufacturing reasons. If the screw is formed in an arc shape like this, the angle at which the tip of the screw is screwed into the plate (the angle of the line drawn by the top of the screw with respect to the axial direction of the screw) is large at the tip and gradually decreases toward the head. That much more rotational torque is required for screwing. Furthermore, there is a risk that the threads may be damaged if a large rotational torque is applied.
そこで、テーパ部を円錐形状にかつ長くすれ
ば、ねじ込まれる角度はゆるやかとなり、ねじ込
み用の回転トルクも小さくてすむが、テーパ部が
細くなり強度的に問題があるうえに、同一厚さの
板を取付ける際、円弧状のものに比べ自ずと全長
が長くなり作業性が悪い。 Therefore, if the taper part is made conical and long, the angle at which the screw is screwed in will be gentler, and the rotational torque for screwing in will be smaller. When installing it, the overall length is naturally longer than the arc-shaped one, making it difficult to work.
この発明は、以上の点に留意し、先端テーパ部
を三段階に傾斜せしめて上記問題の解決を図るこ
とを目的とするものである。 The present invention has been made with the above-mentioned points in mind, and an object of the present invention is to solve the above-mentioned problems by inclining the tip tapered portion in three stages.
以下この発明を、その実施例を示した添付図面
に基づいて説明する。 The present invention will be described below based on the accompanying drawings showing embodiments thereof.
図に示すように、この発明のタツピングスクリ
ユーＡは、ねじ山高さが全長に亘つてほぼ同一高
さのスクリユー主体１の先端テーパ部２を三段階
に傾斜せしめ、このテーパ部２における前記主体
の軸方向に対するねじ山頂の傾斜角度α１，α
２，α３を、その第１段階を３〜６度、第２段階
を18〜22度、第３段階を22.5〜45度とし、かつ、
前記テーパ部２の長さＬを８〜10mmとするととも
に、第１、第２段階の長さl1，l2をそれぞれ４mm
前後、第３段階の長さl3を0.3〜0.5mmとしたもの
である。 As shown in the figure, in the tapping screw A of the present invention, the tip tapered portion 2 of the screw main body 1 whose thread height is approximately the same over the entire length is inclined in three steps, and the Inclination angle of the thread crest with respect to the axial direction of the main body α 1 , α
2 , α 3 , the first stage is 3 to 6 degrees, the second stage is 18 to 22 degrees, and the third stage is 22.5 to 45 degrees, and
The length L of the tapered portion 2 is 8 to 10 mm, and the lengths l 1 and l 2 of the first and second stages are each 4 mm.
The length l3 of the front, back and third stages is 0.3 to 0.5 mm.
三段階の傾斜としたのは、これ以上の段数にな
れば円弧状のものに近くなり回転トルクが大きく
なる問題が生じ、これ以下の段数にすればテーパ
部２が細くなり強度的な問題が生じるからであ
る。 The reason for the three-step inclination is that if the number of steps is more than this, it will become close to an arc shape and the rotational torque will increase, but if the number of steps is less than this, the tapered part 2 will be thinner and there will be problems with strength. This is because it occurs.
テーパ部２の長さＬを８〜10mmとしたのは、通
常タツピングスクリユーＡの外径（山頂径）が
3.5〜4.5mmであり、ねじ込み時のガイドとなるテ
ーパ部２の長さはその程度が最適でその範囲を出
ると後述の傾斜角度を満足し得ないからである。 The reason why the length L of the taper part 2 is set to 8 to 10 mm is because the outer diameter (top diameter) of the tapping screw A is usually
The length of the tapered portion 2, which serves as a guide during screwing, is 3.5 to 4.5 mm. This is the optimum length, and if the length is outside that range, the inclination angle described below cannot be satisfied.
ねじ山頂の傾斜角度α１，α２，α３を、それ
ぞれ３〜６度、18〜22度、22.5〜45度とし、傾斜
段階の各長さl1，l2，l3を、それぞれ４mm前後、
４mm前後、0.3〜0.5mmとしたのは、それらが、テ
ーパ部２の長さＬ内において強度及びねじ込み回
転トルクの問題を解決できる範囲であるからであ
る。例えば、第３段階の長さl3をその範囲外とす
ると、角度α３の22.5〜45度の範囲を満たせなく
なり、さらに、その角度α３を22.5度以下とすれ
ば、尖端部が細くなり穿孔時の強度及び製作時に
尖端が糸のごとく長く出てくる等の問題があり、
45度以上とすれば穿孔性に問題が生じるからであ
る。なお、スクリユーＡの外径が４mm前後の場合
は、α１，α２，α３を５度、20度、30度、l1，
l2，l3を４mm、４mm、0.3mmとそれぞれ設定するこ
とが望ましいが、製作の際は精度においてバラツ
キがあり、それらの値にすることは不可能である
ため、なるべくそれらの値に近づけるようにす
る。 The inclination angles α 1 , α 2 , α 3 of the thread crests are 3 to 6 degrees, 18 to 22 degrees, and 22.5 to 45 degrees, respectively, and the lengths of the inclination stages l 1 , l 2 , and l 3 are each 4 mm. Before and after,
The reason for setting the length to be around 4 mm and 0.3 to 0.5 mm is that these are within the range of the length L of the tapered portion 2 in which problems of strength and screwing rotational torque can be solved. For example, if the length l 3 of the third stage is outside this range, the angle α 3 will not satisfy the range of 22.5 to 45 degrees, and if the angle α 3 is set to 22.5 degrees or less, the tip will become thinner. There are problems with the strength during drilling and the point that comes out long like a thread during manufacturing.
This is because if the angle is 45 degrees or more, there will be a problem with perforation. In addition, when the outer diameter of screw A is around 4 mm, α 1 , α 2 , α 3 are 5 degrees, 20 degrees, 30 degrees, l 1 ,
It is desirable to set l 2 and l 3 to 4 mm, 4 mm, and 0.3 mm, respectively, but there are variations in precision during manufacturing, and it is impossible to set them to these values, so set them as close to those values as possible. Do it like this.
また、この発明は一条ねじ、二条ねじに限定さ
れるものでないことは勿論である。 Furthermore, it goes without saying that the present invention is not limited to single thread or double thread threads.
以上のようにこの発明のタツピングスクリユー
によると、ねじ山高さが全長に亘つてほぼ同一高
さのスクリユー主体の先端テーパ部を三段階に傾
斜せしめ、このテーパ部における前記主体の軸方
向に対するねじ山頂の傾斜角度を、その第１段階
を３〜６度、第２段階を18〜22度、第３段階を
22.5〜45度とし、かつ、前記テーパ部の長さを８
〜10mmとするとともに、第２段階の長さをそれぞ
れ４mm前後、第３段階の長さを0.3〜0.5mmとした
ので、ねじ込むために大きなトルクを必要とせ
ず、大きなトルクを与えた際の破損及びねじ山の
くずれ等を生じさせることなく鉄板を円滑に穿孔
して取付け得る効果がある。 As described above, according to the tapping screw of the present invention, the tip tapered part of the main body of the screw whose thread height is approximately the same over the entire length is inclined in three stages, and the taper part is tilted in three steps with respect to the axial direction of the main body. The inclination angle of the thread top is set at 3 to 6 degrees for the first stage, 18 to 22 degrees for the second stage, and 18 to 22 degrees for the third stage.
22.5 to 45 degrees, and the length of the tapered part is 8
~10mm, the length of the second stage is around 4mm each, and the length of the third stage is 0.3~0.5mm, so a large torque is not required to screw in and there is no damage when applying a large torque. Also, there is an effect that the iron plate can be smoothly drilled and installed without causing the screw threads to collapse or the like.
図面はこの発明のタツピングスクリユーの実施
例の正面図である。
１……スクリユー本体、２……先端テーパ部、
α１，α２，α３……傾斜角度、Ｌ……テーパ部
長さ、l1，l2，l3……各段部長さ。
The drawing is a front view of an embodiment of the tapping screw of the present invention. 1...Screw main body, 2...Tip tapered part,
α 1 , α 2 , α 3 ...Inclination angle, L ... Taper section length, l 1 , l 2 , l 3 ... Each step section length.
Claims (1)
クリユー主体の先端テーパ部を三段階に傾斜せし
め、このテーパ部における前記主体の軸方向に対
するねじ山頂の傾斜角度を、その第１段階を３〜
６度、第２段階を18〜22度、第３段階を22.5〜45
度とし、かつ、前記テーパ部の長さを８〜10mmと
するとともに、第１、第２段階の長さをそれぞれ
４mm前後、第３段階の長さを0.3〜0.5mmとしたこ
とを特徴とするタツピングスクリユー。1. The tip tapered part of the screw main body, whose thread height is approximately the same over the entire length, is inclined in three stages, and the inclination angle of the thread top in this tapered part with respect to the axial direction of the main body is changed from the first stage to 3. ~
6 degrees, second stage 18-22 degrees, third stage 22.5-45
and the length of the tapered part is 8 to 10 mm, the length of the first and second stages are each about 4 mm, and the length of the third stage is 0.3 to 0.5 mm. Tatuping Screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9886981A JPS58609A (en) | 1981-06-22 | 1981-06-22 | Tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9886981A JPS58609A (en) | 1981-06-22 | 1981-06-22 | Tapping screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58609A JPS58609A (en) | 1983-01-05 |
| JPS627404B2 true JPS627404B2 (en) | 1987-02-17 |
Family
ID=14231186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9886981A Granted JPS58609A (en) | 1981-06-22 | 1981-06-22 | Tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58609A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618409U (en) * | 1992-08-13 | 1994-03-11 | 松下電工株式会社 | Pavement floor attachment structure |
| JPH0618408U (en) * | 1992-08-13 | 1994-03-11 | 松下電工株式会社 | Pavement floor attachment structure |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59152210U (en) * | 1983-03-30 | 1984-10-12 | 高崎 誠一郎 | Tapping screw |
| US4617502A (en) * | 1983-06-30 | 1986-10-14 | Hitachi, Ltd. | Method and apparatus for controlling a robot hand along a predetermined path |
| JP4875957B2 (en) * | 2006-10-10 | 2012-02-15 | 株式会社トープラ | Tapping screw |
-
1981
- 1981-06-22 JP JP9886981A patent/JPS58609A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618409U (en) * | 1992-08-13 | 1994-03-11 | 松下電工株式会社 | Pavement floor attachment structure |
| JPH0618408U (en) * | 1992-08-13 | 1994-03-11 | 松下電工株式会社 | Pavement floor attachment structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58609A (en) | 1983-01-05 |
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