JPS62147716U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例の側面図、第２図は第
１図―線の横断面図、第３図及び第４図は加
工状態の説明平面図、第５図はかえり***部の拡
大側面図、第６図及び第７図はそれぞれ他の実施
例の側面図、第８図は第７図―線の横断面図
、第９図は第７図―線の横断面図、第１０図
は従来例の側面図である。 １……ねじ山部、２……軸部材、３……切込部
、４……切り込み面、５……かえり***部、７…
…ねじ頭部。 Fig. 1 is a side view of the embodiment of the present invention, Fig. 2 is a cross-sectional view taken along the line shown in Fig. 1, Figs. 6 and 7 are respectively side views of other embodiments, FIG. 8 is a cross-sectional view along the line of FIG. 7, and FIG. 9 is a cross-sectional view along the line of FIG. 7, and FIG. FIG. 10 is a side view of a conventional example. DESCRIPTION OF SYMBOLS 1... Threaded part, 2... Shaft member, 3... Notch part, 4... Notch surface, 5... Burr raised part, 7...
...screw head.

Claims (1)

【実用新案登録請求の範囲】 １ ねじ山部１を持つている軸部材２において、
ねじ山部１にねじ込み方向に向つて切込部３を形
成し、かつ該切込部３でつくられるねじの進み方
向（ねじ込み方向）側でない切込面部４にかえり
***部５を備えたことを特徴とするねじ。 ２ 前記切込部３が、軸部材２の軸方向に沿つて
直線的にねじ山部１に備えられるものである実用
新案登録請求の範囲第１項記載のねじ。 ３ 前記切込部３が、かえり加工片をねじ山部１
に押圧挿入して形成されるものであつて、このか
えり加工片を先端を中心に力を加えてねじ込み方
向と反対側へ起こして、ねじ山部の外径に対し、
突出したかえり***部５を持つているものである
実用新案登録請求の範囲第１項、又は第２項記載
のねじ。 ４ 前記軸部材２が、ねじ山部のない部分を介在
させて両軸端側にナツト側と植込側とのねじ山部
１，１を形成したスタツドボルトであつて、両ね
じ山部１，１にそれぞれかえり***部５のある切
込部３を備えたものである実用新案登録請求の範
囲第１〜３項のいずれか一つの項記載のねじ。[Claims for Utility Model Registration] 1. In the shaft member 2 having the threaded portion 1,
A notch 3 is formed in the threaded portion 1 toward the screwing direction, and a burr protrusion 5 is provided on the notch surface 4 formed by the notch 3 that is not on the side in which the screw advances (screwing direction). A screw featuring: 2. The screw according to claim 1, wherein the cut portion 3 is provided in the threaded portion 1 linearly along the axial direction of the shaft member 2. 3 The notch 3 cuts the burred piece into the threaded part 1.
It is formed by press-inserting this burred piece into the threaded part by applying force centering on the tip and raising it in the direction opposite to the screwing direction.
The screw according to claim 1 or 2, which has a protruding burr ridge 5. 4. The shaft member 2 is a stud bolt in which threaded parts 1, 1 on the nut side and the implanted side are formed on both shaft end sides with a part without a threaded part interposed therebetween, and both threaded parts 1 are formed. , 1 are each provided with a notch 3 having a burr ridge 5. The screw according to any one of claims 1 to 3 of the utility model registration claims.