JP2005299912A - Tamper-proof bolt and nut - Google Patents

Tamper-proof bolt and nut Download PDF

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Publication number
JP2005299912A
JP2005299912A JP2004144221A JP2004144221A JP2005299912A JP 2005299912 A JP2005299912 A JP 2005299912A JP 2004144221 A JP2004144221 A JP 2004144221A JP 2004144221 A JP2004144221 A JP 2004144221A JP 2005299912 A JP2005299912 A JP 2005299912A
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JP
Japan
Prior art keywords
nut
bolt
present
tamper
outer periphery
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
Application number
JP2004144221A
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Japanese (ja)
Inventor
Toshihiko Kamemoto
敏彦 亀元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2004144221A priority Critical patent/JP2005299912A/en
Publication of JP2005299912A publication Critical patent/JP2005299912A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an outer formation of a bolt and a nut with a removal prevention function for the purpose of preventing the bolt and nut from being removed by tampering with. <P>SOLUTION: The bolt and nut are each formed in a curved surface, and can form a semi-ellipsoidal sphere integrated together after attachment. A tightening groove is formed so as not to allow a force to be applied in the loosening direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、いたずらによりボルト及びナットが緩められる事を防止するものである。The present invention prevents the bolts and nuts from being loosened due to mischief.

従来のボルトやナットは、スパナやパイプレンチ等で取り外す事が可能であった。Conventional bolts and nuts could be removed with a wrench or pipe wrench.

発明が解決しようとする課題Problems to be solved by the invention

工具による取り外しを防止するためには溶接等で固着していたが、これは非常に手間のかかる事であり作業コストも増大していた。In order to prevent removal by a tool, it was fixed by welding or the like, but this was very time-consuming and increased the work cost.

課題を解決するための手段Means for solving the problem

本発明は、上記課題の解決手段として、ボルト及びナットの外周面を半楕球状とし、外周側締め付け部に斜溝又は縦溝ではあるが緩め方向側に曲面を形成する事により、市販工具はもとより締め付け専用工具を使用しても取り外す事をできなくする。
又、斜溝の緩め方向側にも曲面を形成するとより一層効果がある。As a means for solving the above problems, the present invention provides a commercially available tool by forming a semi-elliptical outer peripheral surface of the bolt and nut and forming a curved surface on the loosening direction side although it is a slant groove or a vertical groove on the outer peripheral side tightening portion. It can no longer be removed even if a special tool for tightening is used.
Further, it is more effective to form a curved surface on the slack groove side as well.

発明の効果The invention's effect

本発明は以上のような外観上の特徴を有し、いたずらによる取り外しを防止する。The present invention has the above-described appearance characteristics and prevents removal due to mischief.

以下、本発明の実施の形態について添付図面で説明する。
図５は、使用状態を示す透視図である。
図が示すように上部ナットと下部ナットが一体の半楕球状となり緩めようとする力が加えられなくなる。Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 5 is a perspective view showing a use state.
As shown in the figure, the upper nut and the lower nut are integrated into a semi-elliptical spherical shape, so that a force to loosen is not applied.

本発明の上部ナットの正面図である。It is a front view of the upper nut of the present invention. 本発明の下部ナットの正面図である。It is a front view of the lower nut of the present invention. 本発明のナットの底面図である。It is a bottom view of the nut of the present invention. 本発明の曲面付き縦溝ナットの正面図である。It is a front view of the longitudinal groove nut with a curved surface of the present invention. 本発明の実施例を示す透視図である。It is a perspective view which shows the Example of this invention. 本発明のボルトの正面図である。It is a front view of the bolt of the present invention.

符号の説明Explanation of symbols

１ 上部ナット
２ 下部ナット
３ ボルト
４ 斜溝
５ 底面
６ 曲面付き縦溝ナット
７ 曲面付き縦溝
８ 締め付け部材DESCRIPTION OF SYMBOLS 1 Upper nut 2 Lower nut 3 Bolt 4 Oblique groove 5 Bottom face 6 Curved vertical groove nut 7 Curved vertical groove 8 Tightening member

Claims (5)

上部ナット、下部ナットの外周面が軸先端方向に曲面で形成されたナット。
（下部ナットの上面は平面である。）A nut in which the outer peripheral surfaces of the upper and lower nuts are curved in the direction of the shaft tip.
(The upper surface of the lower nut is a flat surface.) 外周側締め付け部に斜溝を形成したナット。Nut with slanted grooves formed on the outer periphery side tightening part. 外周側締め付け部に斜溝を形成したボルト。Bolts with oblique grooves formed on the outer periphery side tightening part. 外周側締め付け部に縦溝を形成し、その緩め方向側に曲面を形成したナット。A nut with a vertical groove formed on the outer periphery side tightening part and a curved surface formed on the loosening direction side. 上記ボルト及びナットを締め付ける専用工具。Dedicated tool for tightening the bolts and nuts.
JP2004144221A 2004-04-12 2004-04-12 Tamper-proof bolt and nut Pending JP2005299912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004144221A JP2005299912A (en) 2004-04-12 2004-04-12 Tamper-proof bolt and nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004144221A JP2005299912A (en) 2004-04-12 2004-04-12 Tamper-proof bolt and nut

Publications (1)

Publication Number Publication Date
JP2005299912A true JP2005299912A (en) 2005-10-27

Family

ID=35331675

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004144221A Pending JP2005299912A (en) 2004-04-12 2004-04-12 Tamper-proof bolt and nut

Country Status (1)

Country Link
JP (1) JP2005299912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016103751A1 (en) * 2014-12-26 2016-06-30 ユニファス株式会社 Fastening kit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016103751A1 (en) * 2014-12-26 2016-06-30 ユニファス株式会社 Fastening kit
JPWO2016103751A1 (en) * 2014-12-26 2017-09-21 ユニファス株式会社 Fastening kit

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