JPS6245437A - Manufacture of falling-off preventive screw - Google Patents
Manufacture of falling-off preventive screwInfo
- Publication number
- JPS6245437A JPS6245437A JP18400685A JP18400685A JPS6245437A JP S6245437 A JPS6245437 A JP S6245437A JP 18400685 A JP18400685 A JP 18400685A JP 18400685 A JP18400685 A JP 18400685A JP S6245437 A JPS6245437 A JP S6245437A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- shaft part
- groove
- falling
- out prevention
- 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.)
- Pending
Links
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はケーブルコネクタ等において、ケースに軸動回
動自在かっ抜出不能に取付けられ、先端でねじ止めする
ように使用される抜け防止ねじの製法Ｃ二関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a slip-out prevention screw used in cable connectors, etc., which is rotatably attached to a case in a non-removable manner and is screwed at the tip. Regarding manufacturing method C2.
従来の抜け防止ねじは単に長いねじの軸部中間にパイプ
を挿嵌してかしめ止めしたものであって、このパイプを
ケース（二引掛けて抜け防止を図るようにしたものであ
る。Conventional slip-out prevention screws are simply a pipe inserted into the middle of the shaft of a long screw and caulked, and the pipe is hooked onto a case (two screws) to prevent it from slipping out.
この従来の抜け防止ねじは製造に手数を要し、高価であ
る。This conventional retaining screw is labor intensive and expensive to manufacture.
そこで本発明はかしめ止めを省き、転造（二より抜け防
止ねじを製造する方法を得ることを目的として案出され
たものである。Therefore, the present invention has been devised for the purpose of providing a method for manufacturing a rolled (double-twisted) slip-out prevention screw without the need for caulking.
Ｃ問題点を解決するための手段〕
本発明はねじ頭下部に太軸部を有し、さらにこの下部に
細軸部を有するねじ素材を用い、このねじ素材の細軸部
にねじ溝を転造し、このねじ素材の太軸部に溝を転圧し
つつその余肉に膨出させて抜け防止愕を形成する抜け防
止ねじの製法である。Means for Solving Problem C] The present invention uses a screw material that has a thick shaft portion at the bottom of the screw head and further has a thin shaft portion at the bottom, and rolls a thread groove into the thin shaft portion of this screw material. This is a method for manufacturing a slip-out prevention screw in which a groove is formed in the thick shaft portion of the screw material and the excess thickness is bulged out to form a pull-out prevention jaw.
以下図を参照しつつ、本発明一実施例（二ついて具体的
Ｃ；説明する。An embodiment of the present invention (two concrete Cs) will be described below with reference to the drawings.
はじめに第１図Ａに示すようなねじ素材１０′を用意す
る。このねじ素材１０′はねじ頭１１の下部に太軸部１
２を設け、さらにこの先（二より細い細軸部１３を投げ
たものである。First, a screw material 10' as shown in FIG. 1A is prepared. This screw material 10' has a thick shaft portion 1 at the bottom of the screw head 11.
2 is provided, and a thin shaft portion 13 (thinner than 2) is further added.
次にこの細軸部１３にねじ溝１４を転造する。このとき
当然ねじ溝１４の山径は細軸部１３の外径より太き（、
ねじ溝１４の谷径は細軸部１３の外径より小さくなる。Next, a thread groove 14 is formed in this thin shaft portion 13. At this time, the thread diameter of the thread groove 14 is naturally larger than the outer diameter of the thin shaft portion 13 (,
The root diameter of the thread groove 14 is smaller than the outer diameter of the thin shaft portion 13.
この後太軸部１２（：溝１５を転圧して、その余肉を膨
出させ、抜け防止鍔１６を形成し、抜け防止ねじ１０を
完成する。After this, the thick shaft portion 12 (: groove 15) is rolled to bulge out the excess thickness to form a pull-out prevention flange 16, and the pull-out prevention screw 10 is completed.
この製法で太軸部１２を設け、ここに溝１５を転圧して
抜け防止鍔１６を形成したのは、充分大きな径の鍔１６
を形成しつつ、溝１５の谷径を過度（：小さくして強度
を低下させることを防ぐためである。したがって太軸部
１２は太い方が好ましいが通常はねじ溝１４の山径と等
しい程度で充分である。また溝１５の幅は多量の余肉を
膨出しうるよう広（することが好ましい。さらに強度低
下を皆無または僅少（こするため、溝１５の谷径はねじ
溝１４の谷径より太き（またはほぼ等しい程度にしてお
くとよい。By this manufacturing method, the thick shaft portion 12 is provided, and the groove 15 is rolled here to form the pull-out prevention collar 16.
This is to prevent the root diameter of the groove 15 from becoming excessively small and reducing the strength. Therefore, it is preferable that the thick shaft portion 12 be thick, but it is usually about the same as the mountain diameter of the thread groove 14. In addition, the width of the groove 15 is preferably wide enough to allow a large amount of excess material to bulge out.Furthermore, the root diameter of the groove 15 is larger than the root diameter of the thread groove 14 so that there is no or only a slight decrease in strength. It is best to make it thicker than (or approximately equal to) the diameter.
上記図示例では、ねじ溝１４を転造し友後抜け防止鍔１
６を形成しているが、この順序は任意であり、はじめに
抜け防止鍔１６を形成し次にねじ溝１４を転造するよう
にしてもよ（、あるいは１のダイを用いてねじ溝１４と
抜げ防止鍔１６を同時に転造してもよい。In the illustrated example above, the thread groove 14 is rolled and the flange 1
6, but this order is arbitrary; it is also possible to first form the pull-out prevention flange 16 and then roll the thread groove 14 (or to form the thread groove 14 using die 1). The pull-out prevention collar 16 may be rolled at the same time.
こうして製造された抜け防止ねじ１０は、例えば第２図
に示すようなケーブルコネクタ２０において使用される
。すなわち２枚合わせて用いられるケース２１でこの抜
け防止ねじ１０を挾み、空間２２内に抜け防止鍔１６を
収容し、この鍔１６を空間２２の端に当接させてねじ１
０の抜け防止を図り、このねじの先端部で、コネクタピ
ン２３を有するビンボックス２４をナツト２５を用いて
固定させる。The thus manufactured slip-out prevention screw 10 is used, for example, in a cable connector 20 as shown in FIG. That is, the slip-out prevention screw 10 is held between the two case 21 used together, the slip-out prevention collar 16 is housed in the space 22, and the screw 1 is placed in contact with the end of the space 22 with the collar 16.
A bottle box 24 having a connector pin 23 is fixed at the tip of this screw using a nut 25 to prevent the screw from coming off.
本発明は上述のよ５にねじＣ二鉤を形成してこの鍔で抜
け防止を図るようにし、この鍔を転造により製造するの
で、製造工程が極めて簡単であり、また安価に製造する
ことができる。さらに太軸部を設けここ（二溝を転圧す
ることにより抜け防止鍔を形成するので、充分大きな径
の鈎を形成することができ、しかも溝の谷径な過少とし
て強度低下を生じることを防ぐことができる。In the present invention, two hooks are formed on the screw C as described above to prevent the bolt from coming off, and the collar is manufactured by rolling, so the manufacturing process is extremely simple and can be manufactured at low cost. Can be done. In addition, a thick shaft part is provided here (by rolling the two grooves to form a pull-out prevention flange, so it is possible to form a hook with a sufficiently large diameter, and it also prevents the strength from decreasing due to the groove's root diameter being too small. be able to.
第１図は本発明の工程を示す説明図であり、ｆＡｌはね
じ素材の正面図、（Ｂｌはねじ溝を転造した状態の正面
図、ｆｃｌは完成時の正面図である。第２図は本発明の
抜け防止ねじを使用し友ケーブルコネクタの二枚合せの
ケースの１を除去した状態の正面図である。
１０′・・・・・ねじ素材、 １０・・−・・抜け防
止ねじ、 １１・−・・ねじ頭、 １２・・・・・
・太軸部、 １３・・・・・・細軸部、１４・・・・
・・ねじ溝、 １５・・・・・・溝、 １６・−・
・・・抜け防止鍔。FIG. 1 is an explanatory diagram showing the process of the present invention, where fAl is a front view of the screw material, (Bl is a front view of the thread groove rolled, and fcl is a front view of the completed state. 1 is a front view of a two-piece case of a companion cable connector using the pull-out prevention screw of the present invention with part 1 removed. , 11... Screw head, 12...
・Thick shaft part, 13... Thin shaft part, 14...
...Thread groove, 15...Groove, 16...
...Tsuba that prevents it from coming off.
Claims (1)
部を有するねじ素材を用い、このねじ素材の細軸部にね
じ溝を転造し、このねじ素材の太軸部に溝を転圧しつつ
その余肉を膨出させて抜け防止鍔を形成する抜け防止ね
じの製法。1. Using a screw material that has a thick shaft part at the bottom of the screw head and a thin shaft part at the bottom, roll a thread groove on the thin shaft part of this screw material, and then A method for manufacturing a pull-out prevention screw that forms a pull-out prevention flange by rolling the groove and expanding its excess thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18400685A JPS6245437A (en) | 1985-08-23 | 1985-08-23 | Manufacture of falling-off preventive screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18400685A JPS6245437A (en) | 1985-08-23 | 1985-08-23 | Manufacture of falling-off preventive screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6245437A true JPS6245437A (en) | 1987-02-27 |
Family
ID=16145674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18400685A Pending JPS6245437A (en) | 1985-08-23 | 1985-08-23 | Manufacture of falling-off preventive screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6245437A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019132421A (en) * | 2018-02-02 | 2019-08-08 | 富士機材株式会社 | Pipe support tool with fall-off prevention function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS555121A (en) * | 1978-06-23 | 1980-01-16 | Shinko Seisakusho:Kk | Manufacture of screw provided with washer |
| JPS558360A (en) * | 1978-07-03 | 1980-01-21 | Matsumoto Jukogyo Kk | Corrugation bolt and production thereof |
-
1985
- 1985-08-23 JP JP18400685A patent/JPS6245437A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS555121A (en) * | 1978-06-23 | 1980-01-16 | Shinko Seisakusho:Kk | Manufacture of screw provided with washer |
| JPS558360A (en) * | 1978-07-03 | 1980-01-21 | Matsumoto Jukogyo Kk | Corrugation bolt and production thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019132421A (en) * | 2018-02-02 | 2019-08-08 | 富士機材株式会社 | Pipe support tool with fall-off prevention function |
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