JPS6131207Y2 - - Google Patents
Info
- Publication number
- JPS6131207Y2 JPS6131207Y2 JP7831582U JP7831582U JPS6131207Y2 JP S6131207 Y2 JPS6131207 Y2 JP S6131207Y2 JP 7831582 U JP7831582 U JP 7831582U JP 7831582 U JP7831582 U JP 7831582U JP S6131207 Y2 JPS6131207 Y2 JP S6131207Y2
- Authority
- JP
- Japan
- Prior art keywords
- thread
- angle
- screw
- regions
- transition
- 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
- 230000007704 transition Effects 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 208000028571 Occupational disease Diseases 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Transmission Devices (AREA)
Description
【考案の詳細な説明】
本考案は、ねじそのものが相手材の下穴に雌ね
じを成形しつつ螺着することのできる。いわゆる
セルフタツピンねじに関する。[Detailed Description of the Invention] In the present invention, the screw itself can be screwed into the prepared hole of the mating member while forming a female thread. This relates to so-called self-tattu pin screws.
セルフタツピンねじは相手材の下穴にねじ自身
でタツプを立てながら螺入し、そのまま相手材を
締付けることができるので、小ねじに比べてその
操作性は非常に高く、ねじ締結コスト低減に大き
く寄与している。一方、このセルフタツピンねじ
のねじ込み時、すなわち組立作業中に雌ねじを成
形するので、これに従事する組立作業者、特に女
子作業者の疲労が大きく、職業病の原因となつて
いる。従つて、相手材の下穴に雌ねじを加工し、
成形するに要するトルク(以下ねじ込みトルクと
称す)の低減の要請は非常に大きなものがあつ
た。 Self-tap pin screws can be screwed into the pilot hole of the mating material while making a tap on their own, and the mating material can be tightened as is.Compared to machine screws, the self-tap pin screws are much easier to operate than small screws, and contribute greatly to reducing screw tightening costs. are doing. On the other hand, since the female thread is formed during screwing of the self-tap pin screw, that is, during assembly work, assembly workers, especially female workers, who engage in this work are highly fatigued, which is a cause of occupational diseases. Therefore, we machined a female thread into the pilot hole of the mating material,
There has been a great demand for reducing the torque required for molding (hereinafter referred to as screw-in torque).
この要請にこたえるために多数の提案がなされ
たが、その殆どは第4図及び第5図に示す昭和37
年特許出願公告第4608号で代表されるねじ部断面
形状に対する提案である。第4図に示す本提案の
自己雌ねじ切り用ねじ11によれば、ねじ山7は
ねじ山7成形部分中に3個の突起12を有し、か
つ、これ等の突起12は120゜離れて隔たつてい
る。更に第5図において、柄13の形状は、ねじ
軸心14と相隣る2個の弓形面が係合する点12
aとを結ぶ半径15上に中心16を有する弓形辺
17からなり、しかも前記弓形辺17を有する等
辺三角形に近いものに構成されている。 A number of proposals were made to meet this request, most of which are shown in Figures 4 and 5.
This is a proposal for the cross-sectional shape of the threaded portion as typified by Patent Application Publication No. 4608. According to the proposed self-threading screw 11 shown in FIG. 4, the thread 7 has three projections 12 in the thread 7 forming part, and these projections 12 are spaced apart by 120°. Separated. Furthermore, in FIG. 5, the shape of the handle 13 has a point 12 where two adjacent arcuate surfaces engage with the screw axis 14.
It is composed of an arcuate side 17 having a center 16 on a radius 15 connecting the arcuate side 17 with the arcuate side 17, and is configured to be close to an equilateral triangle having the arcuate side 17.
上記自己雌ねじ切り用ねじを使用することによ
り、ねじ込みトルクが実質的に減少し、それなり
の効果があつた。しかし、この効果だけでは近年
の組立作業における生産性向上に対応するために
は充分とはいえなかつた。このような状況にもか
かわらず、タツピンねじの需要はますます増大し
ている。この結果、ねじ込みトルクの低減の要請
は更に大きなものを求めてきているのである。 By using the self-threading screw described above, the screwing torque was substantially reduced, and there was a certain effect. However, this effect alone was not sufficient to meet the recent improvements in productivity in assembly work. Despite this situation, the demand for tuft pin screws continues to increase. As a result, there is a growing demand for even greater reductions in screwing torque.
本考案は、これ等の社会的要請にこたえるため
になされたもので、以下実施例を図面に基づいて
説明する。 The present invention was devised in response to these social demands, and embodiments will be described below based on the drawings.
第1図、第2図及び第3図において、1はタツ
ピンねじであり、駆動機構2を有する頭部3とね
じ部4とからなつている。前記ねじ部4をねじ山
7の外径寸法からみると、ねじ部4は首下から伸
びるストレート部5とテーパ部6とからなつてい
る。そして、前記ストレート部5はねじ山7の外
径寸法が実質的に等しく、前記テーパ部6はねじ
部先端8に行くに従い外径寸法が小さくなつてい
る。 In FIGS. 1, 2, and 3, reference numeral 1 denotes a tuft pin screw, which is composed of a head 3 having a drive mechanism 2 and a threaded portion 4. As shown in FIG. Looking at the threaded portion 4 from the outer diameter dimension of the thread 7, the threaded portion 4 consists of a straight portion 5 extending from below the neck and a tapered portion 6. In the straight part 5, the outer diameter of the thread 7 is substantially equal, and in the tapered part 6, the outer diameter becomes smaller toward the tip 8 of the thread.
また、前記ねじ部4をねじ山7のねじ山角度か
らみると、ねじ部4はねじ部先端8から領域A、
領域B及び領域Cが設けられ、更に前記領域A,
B間に第1移行部10と前記領域B,C間に第2
移行部9とが設けられている。 Further, when the threaded portion 4 is viewed from the thread angle of the threaded thread 7, the threaded portion 4 extends from the threaded portion tip 8 to the area A,
A region B and a region C are provided, and the region A,
A first transition part 10 between areas B and a second transition part 10 between areas B and C.
A transition section 9 is provided.
そして前記領域Aは30゜のねじ山角度eを有す
るねじ山7eからなつており、前記領域Bは45゜
のねじ山角度cを有するねじ山7cからなつてお
り、前記領域Cは60゜のねじ山角度aを有するね
じ山7aからなつている。更に、前記第1移行部
10は30゜と45゜の複合角度dを有するねじ山7
dからなつている。かつ、第1移行部10は30゜
の角度を有するねじ山7dの谷底に45゜の角度を
有するねじ山7dの谷底が重なり始め、以後連続
的に45゜の角度を有するねじ山7d部分が増加し
て、45゜のねじ山角度cを有するねじ山7cの領
域Bに移行するように構成されている。前記第2
移行部9は45゜と60゜の複合角度bを有するねじ
山7bからなつている。かつ、第2移行部9は、
45゜の角度を有するねじ山7bの谷底に60゜の角
度を有するねじ山7bの谷底が重なり始め、以後
連続的に60゜の角度を有するねじ山7b部分が増
加して、60゜のねじ山角度aを有するねじ山7a
の領域Cに移行するように構成されている。 The area A consists of a thread 7e with a thread angle e of 30°, the area B consists of a thread 7c with a thread angle c of 45°, and the area C consists of a thread 7c with a thread angle c of 60°. It consists of a thread 7a having a thread angle a. Furthermore, the first transition part 10 has a thread 7 having a compound angle d of 30° and 45°.
It starts from d. In addition, in the first transition part 10, the root of the thread 7d having an angle of 30° begins to overlap the root of the thread 7d having an angle of 45°, and thereafter, the portion of the thread 7d having an angle of 45° continues. It is configured to increase and pass into region B of the thread 7c with a thread angle c of 45°. Said second
The transition 9 consists of a thread 7b with a compound angle b of 45° and 60°. And, the second transition part 9 is
The root of the thread 7b having an angle of 60° begins to overlap the root of the thread 7b having an angle of 45°, and thereafter the portion of the thread 7b having an angle of 60° increases continuously to form a 60° thread. Thread 7a with thread angle a
It is configured to move to area C of .
上記のように構成したタツピンねじを使用する
場合、先ず、タツピンねじ1のねじ部先端8を相
手部材・板厚・ねじ径、・ねじ形状等によつて適
正に定められた径の下穴に置く。次にタツピンね
じ1に所定の工具により推力とねじ込みトルクと
を加えると、領域Aの30゜のねじ山角度eを有す
るねじ山7eが相手材の下穴に食い込み雌ねじを
成形し始める。そして、最もねじ込みトルクの必
要とするテーパ部6が押し込まれる。その後、第
1移行部10に達し、そこでは30゜の角度を有す
る雌ねじを谷側から徐々に45゜の角度を有するね
じ山7dが押し拡げるように押し込まれる。そし
て、領域Bの45゜のねじ山角度cを有するねじ山
7cがねじ込まれ、第2移行部9に達する。そこ
では45゜の角度を有する雌ねじを谷側から徐々に
60゜の角度を有するねじ山7bが押し拡げるよう
に押し込まれる。そして、領域Cの60゜のねじ山
角度aを有するねじ山7aが雌ねじにねじ込ま
れ、相手材と螺着する。 When using the tatsupin screw configured as described above, first insert the tip 8 of the threaded portion of the tatsupin screw 1 into a pilot hole with a diameter appropriately determined by the mating member, plate thickness, thread diameter, thread shape, etc. put. Next, when a thrust force and screwing torque are applied to the tuft pin screw 1 using a predetermined tool, the screw thread 7e having a thread angle e of 30 degrees in the area A bites into the pilot hole of the mating material and begins to form a female thread. Then, the tapered portion 6 that requires the most screwing torque is pushed in. Thereafter, the first transition part 10 is reached, where the female thread having an angle of 30 degrees is gradually pushed in from the root side so that the threads 7d having an angle of 45 degrees are pushed out. Then, the thread 7c having a thread angle c of 45° in region B is screwed in and reaches the second transition part 9. There, a female thread with a 45° angle is gradually inserted from the valley side.
The screw thread 7b having an angle of 60 degrees is pushed in so as to be expanded. Then, the thread 7a having a thread angle a of 60° in region C is screwed into the female thread and screwed into the mating material.
以上説明したように、本考案はタツピンねじの
ねじ部に複数個のねじ山角度を有するねじ山の領
域に設け、かつ、相隣る領域のねじ山をスムーズ
に連絡するように、その各領域の重なる部分に第
1移行部及び第2移行部を設け、その各移行部に
相隣る領域のねじ山角度からなる複合角度のねじ
山を成形しているため、各移行部では大きい角度
のねじ山で押し拡げる部分が少なく、ねじ込みト
ルクを軽減するなどの効果がある。また、本考案
は、相手材の袋穴に使用される場合でも、ねじ込
みトルクは急激に上昇することなく、ゆるやかに
上昇するので、組立作業者への負荷が大きく軽減
される効果がある。更に、ねじ込み初期のトルク
上昇率、すなわちねじ込みトルクとねじの回転角
との比ぐ低下するなどの効果もある。これ等の効
果は、従来、組立作業者に与えていた疲労を著し
く軽減し、職業病の原因を除去するものである。
しかも、このことは先の社会的要請に大きくこた
えるものである。 As explained above, the present invention provides a screw thread area having a plurality of thread angles in the threaded part of a tatsupin screw, and each area A first transition part and a second transition part are provided in the overlapping parts, and each transition part is formed with a thread with a compound angle consisting of the thread angles of the adjacent areas, so each transition part has a large angle. There are fewer parts that need to be expanded by the screw thread, which has the effect of reducing screwing torque. Further, even when the present invention is used in a blind hole in a mating material, the screwing torque does not increase rapidly but gradually increases, so the load on the assembly worker is greatly reduced. Furthermore, there is an effect that the torque increase rate at the initial stage of screwing, that is, the ratio of the screwing torque to the rotation angle of the screw is reduced. These effects significantly reduce the fatigue traditionally experienced by assembly workers and eliminate the causes of occupational diseases.
Moreover, this greatly responds to the social demands mentioned above.
また、本考案は相手材の雌ねじが常に押し拡げ
られるため、螺着時の雌ねじの弾力性が失なわれ
ず。雌ねじと雄ねじの摩擦力が高まり、耐ゆるみ
性能の向上を計ることができるなどの効果を発揮
する。更に、本考案は、ねじ込みトルクの低減が
ねじ込みに使用する工具類の耐久度の向上に寄与
するため、原価低減にも効果を発揮する。 In addition, with this invention, the female thread of the mating material is constantly pushed out, so the female thread does not lose its elasticity during screwing. This increases the frictional force between the female thread and the male thread, resulting in improved loosening resistance. Furthermore, the present invention is effective in reducing costs because the reduction in screwing torque contributes to improving the durability of tools used for screwing.
尚、本考案は、ねじ部に3領域を設定し、ねじ
山角度が3種である場合のみ説明されているが、
このねじ山角度の種類は2種でもあるいは4種以
上としても本考案の思想に含まれることは勿論で
ある。また、本考案は、従来例のセルフタツピン
ねじ、例えば非円形断面のタツピンねじのねじ山
に適用することで更に大きな効果を発揮する。 In addition, although the present invention is explained only when three areas are set in the threaded part and there are three types of thread angles,
Of course, the concept of the present invention includes two or more types of thread angles. Further, the present invention exhibits even greater effects when applied to the threads of conventional self-tap pin screws, for example, tut pin screws with non-circular cross sections.
第1図は本考案の正面図、第2図は第1図の要
部切欠断面図、第3図は第2図のa,b,c,
d,eの拡大断面図、第4図は従来例の正面図、
第5図は第4図のねじ部形状の説明図でる。
1……タツピンねじ、2……駆動機構、3……
頭部、4……ねじ部、5……ストレート部、6…
…テーパ部、7,7a,7b,7c,7d,7e
……ねじ山、8……ねじ部先端、9……第2移行
部、10……第1移行部、11……自己雌ねじ切
り用ねじ山、12……突起、12a……弓形面が
係合する点、13……柄、14……ねじ軸心、1
5……半径、16……中心、17……弓形辺。
Fig. 1 is a front view of the present invention, Fig. 2 is a cutaway sectional view of the main part of Fig. 1, and Fig. 3 is a, b, c, and
d and e are enlarged sectional views, and Fig. 4 is a front view of the conventional example.
FIG. 5 is an explanatory diagram of the shape of the threaded portion in FIG. 4. 1... Tatsupin screw, 2... Drive mechanism, 3...
Head, 4...Threaded part, 5...Straight part, 6...
...Tapered portion, 7, 7a, 7b, 7c, 7d, 7e
... Thread, 8 ... Thread part tip, 9 ... Second transition part, 10 ... First transition part, 11 ... Thread for self-female thread cutting, 12 ... Protrusion, 12a ... Arcuate surface is engaged Matching point, 13...Handle, 14...Screw axis center, 1
5... Radius, 16... Center, 17... Arcuate side.
Claims (1)
5及びテーパ部6を有するねじ部4とからなる
タツピンねじ1において、 ねじ部4にねじ山角度の異なるねじ山を有す
る複数個の領域と相隣る領域に連なる移行部を
設け、かつ、前記移行部に相隣る領域のねじ山
角度からなる複合角度を有するねじ山を設け、
前記ねじ山の小さい角度のねじ山の谷底に大き
い角度のねじ山の谷底が重なり始め、以後連続
的に大きい角度のねじ山部分が増加して、大き
いねじ山角度を有するねじ山の領域に移行する
ように構成したことを特徴とするタツピンね
じ。 2 ねじ部4に小、中、大のねじ山角度を有する
ねじ山7でなる3種類の領域A,B,Cを設
け、前記領域A,B間に第1移行部10と前記
領域B,C間に第2移行部9とを設けたことを
特徴とする実用新案登録請求の範囲第1項に記
載のタツピンねじ。[Claims for Utility Model Registration] 1. In a tatsupin screw 1 consisting of a head 3 having a drive mechanism 2 and a threaded part 4 having a straight part 5 and a tapered part 6, the threaded part 4 has threads with different thread angles. a transition part that is connected to a plurality of regions and adjacent regions, and a thread having a compound angle consisting of the thread angles of the adjacent regions is provided in the transition part,
The root of the screw thread with a large angle begins to overlap with the root of the screw thread with a small angle of the thread, and thereafter, the thread portion with a large angle continuously increases and shifts to a region of the screw thread with a large thread angle. A tatsu pin screw characterized in that it is configured to do so. 2. Three types of regions A, B, and C are provided in the threaded portion 4, each consisting of threads 7 having small, medium, and large thread angles, and between the regions A and B, a first transition portion 10 and the region B, The tuft pin screw according to claim 1, characterized in that a second transition portion 9 is provided between C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7831582U JPS58178514U (en) | 1982-05-26 | 1982-05-26 | Tatsu pin screw |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7831582U JPS58178514U (en) | 1982-05-26 | 1982-05-26 | Tatsu pin screw |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58178514U JPS58178514U (en) | 1983-11-29 |
JPS6131207Y2 true JPS6131207Y2 (en) | 1986-09-11 |
Family
ID=30087540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7831582U Granted JPS58178514U (en) | 1982-05-26 | 1982-05-26 | Tatsu pin screw |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58178514U (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2186220T3 (en) * | 1997-07-29 | 2003-05-01 | Ejot Verbindungstech Gmbh & Co | TAPPING SCREW. |
US20140286729A1 (en) * | 2011-11-30 | 2014-09-25 | Shingo Torii | Tapping screw |
-
1982
- 1982-05-26 JP JP7831582U patent/JPS58178514U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58178514U (en) | 1983-11-29 |
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