JPH037806B2 - - Google Patents
Info
- Publication number
- JPH037806B2 JPH037806B2 JP11139585A JP11139585A JPH037806B2 JP H037806 B2 JPH037806 B2 JP H037806B2 JP 11139585 A JP11139585 A JP 11139585A JP 11139585 A JP11139585 A JP 11139585A JP H037806 B2 JPH037806 B2 JP H037806B2
- Authority
- JP
- Japan
- Prior art keywords
- thread
- nut
- notch
- locking nut
- screw
- 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
- 238000003825 pressing Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 1
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ナツト本体の外面を打圧して変形さ
せるか又は凹部を設けることによつてねじ山の一
部分を内方へ変形したゆるみ止めナツトの改良に
関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is an improvement in a locking nut in which a portion of the thread is deformed inward by pressing and deforming the outer surface of the nut body or by providing a recess. Regarding.
従来の技術
この種のゆるみ止めナツトは種々のものが市販
されているが、変形されたねじ山部分の弾力性に
よりボルトのねじ山に応力を与えてゆるみ止めが
なされるため、ボルトにねじ込む際に要する締付
けトルクが普通のナツトに比べて非常に大きく、
作業性が悪いという難点があり、また変形された
ねじ山部分がボルトのねじ山に損傷を与えるとい
う問題があつた。しかも、ねじの戻り方向への回
転トルクが上述した過大な締付けトルクに比べて
低いものであつた。PRIOR TECHNOLOGY Various types of locking nuts of this kind are commercially available, but since the elasticity of the deformed threaded portion applies stress to the threads of the bolt to prevent loosening, when screwed into the bolt, The tightening torque required is much larger than that of a normal nut.
There was a problem in that workability was poor, and there was also a problem in that the deformed thread portion damaged the thread of the bolt. Moreover, the rotational torque in the return direction of the screw was lower than the above-mentioned excessive tightening torque.
発明が解決しようとする問題点
本発明は上記従来の問題点に鑑みなされたもの
で、ボルトにねじ込む際の締付けトルクが比較的
小さくて作業性が良好でありながら、すぐれたゆ
るみ止め効果が得られるゆるみ止めナツトを提供
することを目的とする。Problems to be Solved by the Invention The present invention was devised in view of the above-mentioned conventional problems.The present invention has been developed in view of the above-mentioned problems of the conventional art. The purpose of the present invention is to provide a locking nut that can be tightened.
問題点を解決するための手段
すなわち、本発明のゆるみ止めナツトは、ナツ
ト本体の頂部のねじ穴周縁に半径方向へ延びる切
欠き部が設けられ、該切欠き部により分断して形
成されたねじ山セグメントのねじ込み方向後端部
分が、前記ナツト本体頂部の外面を打圧すること
によつて内方へ変形され、その切欠き端がねじの
戻り方向への回転運動に対して、螺合した雄ねじ
のねじ山にくい込むようになつていることを特徴
とする。Means for Solving the Problems In other words, the locking nut of the present invention is provided with a notch extending in the radial direction at the periphery of the screw hole at the top of the nut body, and a screw formed by being separated by the notch. The rear end portion of the thread segment in the screwing direction is deformed inward by pressing against the outer surface of the top of the nut main body, and the notch end is pressed against the screwed male thread against rotational movement in the return direction of the screw. It is characterized by being designed to fit into the screw thread of.
前記切欠き部は、前記ねじ穴周縁に複数個を対
称的に配置して設け、複数のねじ山セグメントを
形成することが望ましい。また、前記各ねじ山セ
グメントのねじ込み方向後端部分を内方へ変形さ
せるため、前記ナツト本体の頂部は、外周面が円
錐形をなす環状段部に形成することが好ましい。 Preferably, a plurality of notches are arranged symmetrically around the circumference of the screw hole to form a plurality of thread segments. Further, in order to deform the rear end portion of each thread segment inwardly in the screwing direction, the top portion of the nut body is preferably formed into an annular stepped portion having a conical outer circumferential surface.
実施例
以下、本発明の実施例を図面に基づいて説明す
る。ナツト本体１は、通常の六角ナツトと同様の
六角形状をなし、中心部に軸方向全体に亘つて延
在するねじ穴２を有している。ナツト本体１の頂
部３は外周面が円錐形をなす環状段部に形成され
ると共に、その内側のねじ穴２周縁に半径方向へ
延びる３つの切欠き部４が対称的に配置して設け
られ、該切欠き部４……でねじ山を分断して３つ
のねじ山セグメント５……が形成されている。各
ねじ山セグメント５は、そのねじ込み方向後端部
分５ａが内方へ変形されている。セグメント後端
部分５ａの変形はナツト本体１の頂部３の外面を
打圧することにより行なわれる。６は打圧によつ
て頂部３の外面に形成された凹部である。Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. The nut main body 1 has a hexagonal shape similar to a normal hexagonal nut, and has a screw hole 2 in the center thereof extending throughout the axial direction. The top part 3 of the nut body 1 is formed into an annular stepped part with a conical outer peripheral surface, and three notches 4 extending in the radial direction are arranged symmetrically around the circumferential edge of the screw hole 2 inside the top part 3. , three thread segments 5 are formed by dividing the thread at the cutout portion 4 . Each thread segment 5 has its rear end portion 5a in the threading direction deformed inwardly. The segment rear end portion 5a is deformed by pressing the outer surface of the top portion 3 of the nut body 1. Reference numeral 6 denotes a recess formed on the outer surface of the top portion 3 by applying pressure.
上記構成のナツトをボルトのねじ部に螺合して
ねじ込むと、各ねじ山セグメント５の内方へ変形
せしめられた後端部分５ａが切欠き部４の存在に
より比較的容易に弾性変形するので、ねじ込みに
要する締付けトルクが比較的小さく作業性が良
い。しかも、ねじの戻り方向への回転運動に対し
ては各ねじ山セグメント５の切欠き端５ｂがボル
トのねじ山にくい込むように作用し、すぐれたゆ
るみ止め効果を発揮する。第３図は、切欠き部４
を頂部３の外周面まで延長して各ねじ山セグメン
ト５を完全に分離した例を示す。このような構造
にすると、各ねじ山セグメント５の弾性変形が一
層容易になるばかりでなく、切削加工により切欠
き部４を加工する場合に好都合である。 When the nut having the above structure is screwed into the threaded portion of the bolt, the inwardly deformed rear end portion 5a of each thread segment 5 is relatively easily elastically deformed due to the presence of the notch portion 4. , the tightening torque required for screwing is relatively small and workability is good. Furthermore, when the screw is rotated in the return direction, the notched end 5b of each thread segment 5 acts to bite into the thread of the bolt, thereby exhibiting an excellent locking effect. Figure 3 shows the notch 4.
An example is shown in which each thread segment 5 is completely separated by extending it to the outer peripheral surface of the top part 3. Such a structure not only makes it easier to elastically deform each thread segment 5, but also is convenient when cutting the notch 4.
発明の効果
上述のように、本発明のゆるみ止めナツトは、
ナツト本体の頂部のねじ穴周縁に半径方向へ延び
る切欠き部が設けられ、該切欠き部により分断し
て形成されたねじ山セグメントのねじ込み方向後
端部が、打圧により内方へ変形せしめられている
ので、該変形されたねじ山部分は自由端になつて
いて、比較的容易に弾性変形し得る。したがつ
て、ボルトのねじ部に対する締付けトルクが小さ
くて作業性が良好である。しかも、ねじの戻り方
向への回転運動に対しては各ねじ山セグメントの
内方へ変形せしめられたねじ山部分の切欠き端が
ボルトのねじ山にくい込むように作用してすぐれ
たゆるみ止め効果が得られる。Effects of the Invention As mentioned above, the locking nut of the present invention has the following advantages:
A notch extending in the radial direction is provided at the periphery of the screw hole at the top of the nut body, and the rear end in the screwing direction of the thread segment separated by the notch is deformed inwardly by the impact force. Since the deformed thread portion is a free end, it can be elastically deformed relatively easily. Therefore, the tightening torque for the threaded portion of the bolt is small, resulting in good workability. Furthermore, when the screw rotates in the return direction, the notched end of the inwardly deformed thread of each thread segment acts to bite into the thread of the bolt, resulting in an excellent locking effect. is obtained.
なお、前記切欠き部は、実施例のように複数個
設けることが望ましいけれども、１つでもよい。 Although it is desirable to provide a plurality of cutouts as in the embodiment, there may be only one cutout.
図面は本発明の一実施例を示し、第１図は本発
明に係るゆるみ止めナツトの平面図、第２図は同
縦断正面図、第３図は別の実施例を示す縦断正面
図である。
１……ナツト本体、２……ねじ穴、３……頂
部、４……切欠き部、５……ねじ山セグメント、
５ａ……セグメント５のねじ込み方向後端部分、
５ｂ……切欠き端。
The drawings show one embodiment of the present invention; FIG. 1 is a plan view of a locking nut according to the present invention, FIG. 2 is a longitudinal sectional front view of the same, and FIG. 3 is a longitudinal sectional front view showing another embodiment. . 1... Nut body, 2... Threaded hole, 3... Top, 4... Notch, 5... Thread segment,
5a... Rear end portion of segment 5 in screwing direction,
5b...notch end.
Claims (1)
延びる切欠き部４が設けられ、該切欠き部４によ
り分断して形成されたねじ山セグメント５のねじ
込み方向後端部分５ａが、前記ナツト本体頂部の
外面を打圧することによつて内方へ変形され、そ
の切欠き端５ｂがねじの戻り方向への回転運動に
対して、螺合した雄ねじのねじ山にくい込むよう
になつているゆるみ止めナツト。 ２ 前記切欠き部４が前記ねじ穴周縁に複数個対
称的に配置して設けられ、複数のねじ山セグメン
ト５が形成されている特許請求の範囲第１項記載
のゆるみ止めナツト。 ３ 前記ナツト本体の頂部が、外周面が円錐形を
なす環状段部に形成されている特許請求の範囲第
１項または第２項記載のゆるみ止めナツト。 ４ 前記切欠き部４がナツト本体の頂部の外周面
まで延び、各ねじ山セグメント５が完全に分離し
ていることを特徴とする特許請求の範囲第１項な
いし第３項のいずれか１項に記載のゆるみ止めナ
ツト。[Claims] 1. A notch 4 extending in the radial direction is provided at the periphery of the screw hole at the top of the nut body, and a rear end portion in the screwing direction of the thread segment 5 formed by being separated by the notch 4. 5a is deformed inward by pressing the outer surface of the top of the nut main body, and the notched end 5b is inserted into the thread of the screwed male screw against rotational movement in the return direction of the screw. A loose locking nut. 2. The locking nut according to claim 1, wherein a plurality of said notches 4 are arranged symmetrically around the circumference of said screw hole, and a plurality of thread segments 5 are formed. 3. The locking nut according to claim 1 or 2, wherein the top of the nut body is formed into an annular stepped portion having a conical outer peripheral surface. 4. Any one of claims 1 to 3, characterized in that the notch 4 extends to the outer peripheral surface of the top of the nut body, and each thread segment 5 is completely separated. The locking nut described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11139585A JPS61270513A (en) | 1985-05-24 | 1985-05-24 | Locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11139585A JPS61270513A (en) | 1985-05-24 | 1985-05-24 | Locking nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61270513A JPS61270513A (en) | 1986-11-29 |
| JPH037806B2 true JPH037806B2 (en) | 1991-02-04 |
Family
ID=14560065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11139585A Granted JPS61270513A (en) | 1985-05-24 | 1985-05-24 | Locking nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61270513A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0738734U (en) * | 1993-12-17 | 1995-07-14 | 貢 小野寺 | Grooved nut |
-
1985
- 1985-05-24 JP JP11139585A patent/JPS61270513A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61270513A (en) | 1986-11-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |