JPH112227A - Locking nut - Google Patents

Locking nut

Info

Publication number
JPH112227A
JPH112227A JP17290797A JP17290797A JPH112227A JP H112227 A JPH112227 A JP H112227A JP 17290797 A JP17290797 A JP 17290797A JP 17290797 A JP17290797 A JP 17290797A JP H112227 A JPH112227 A JP H112227A
Authority
JP
Japan
Prior art keywords
nut
angle
face
inclined surface
slanting
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
JP17290797A
Other languages
Japanese (ja)
Inventor
Zenji Tsuchikawa
善司 土川
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
Original Assignee
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 JP17290797A priority Critical patent/JPH112227A/en
Publication of JPH112227A publication Critical patent/JPH112227A/en
Pending legal-status Critical Current

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  • Bolts, Nuts, And Washers (AREA)

Abstract

PROBLEM TO BE SOLVED: To omit labor for secondary machining and to surely carry out locking by forming the lower face of a nut into a slanting face tilted at a predetemtined angle. SOLUTION: A screw hole 1 penetrating a shaft center is arranged in a nut 2. The outer circumference of the nut 2 is formed into a hexagon. A fastening bearing surface, that is, the lower face of the nut 2 is formed into a slanting face 3 gently tilted in one direction. An inclination angle α of the slanting face 3 is set within an angle range which allows absorption of a clearance in an engaging part between a bolt and the nut 2 by means of a small inclination of the nut 2 and, at the same time, allows tight contact of the slanting face 3 of the nut 2 with the upper face of a fastened member when the nut 2 is fastened with predetermined torque. The inclination angle α differs according to a size, a grade, or material of the nut 2, however, for example, an angle of 1.5-2.5 degrees is desirable for an iron nut of M12 in the second grade.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、使用中に緩みの発生を
防止する機能を備えたナットに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nut having a function of preventing loosening during use.

【0002】[0002]

【従来の技術】従来、ナットの使用中に緩みの発生を防
止する手段として、ナット自体に色々な工夫を加えたも
のが各種提案されている。例えば、ナットボデイが一つ
のものとして、ナットボデイに金属弾性板やナイロンプ
レート或いはスプリング等の弾性体を組み込んだものが
一般に知られている。
2. Description of the Related Art Conventionally, as a means for preventing the occurrence of loosening during use of a nut, various nuts have been proposed in which the nut itself is modified. For example, it is generally known that the nut body includes one elastic body such as a metal elastic plate, a nylon plate, or a spring.

【0003】[0003]

【発明が解決しようとする課題】しかし、このような構
造のものは何れもナットボディに2次加工で工作をして
付加部品を組み込むものであるから、製作が面倒でコス
トが高くつくと共に、ボルトへのねじ込み当初から組み
込まれた弾性体によって回動トルクが付加されて締め付
け作業が面倒であり、しかも使用中に弾性体の径年変化
によって緩み止め効果が劣化する、といった欠点があ
る。またナットボデイの一部を打圧してネジ孔をすこし
変形させることによって高トルクを発生させた緩み止め
用ナットも知られているが、ナット並びにボルトのネジ
山を傷つけると共に、一度緩めるとトルクが半減して緩
み止め効果が著しく劣化する、といった問題点がある。
However, in any of the above structures, the secondary body is machined by secondary machining to incorporate additional parts, so that the production is troublesome and costly. There is a drawback that the torque is added by the elastic body incorporated from the beginning of the screwing into the bolt and the tightening operation is troublesome, and the locking effect is deteriorated due to the aging of the elastic body during use. Also known is a locking nut that generates a high torque by pressing a part of the nut body to slightly deform the screw hole, but the nut and bolt threads are damaged and once loosened, the torque is reduced by half. And the locking effect is significantly deteriorated.

【0004】そこで本発明は、ナットボデイの座面に工
夫を加えることによって、従来のスタンダードナットに
強力な緩み止め効果を発揮させることのできる緩み止め
用ナットを従来のスタンダードナットと殆ど変わらない
コストで提供することを主たる目的とするものである。
Accordingly, the present invention provides a locking nut capable of exerting a powerful locking effect on a conventional standard nut by modifying the seating surface of the nut body at a cost substantially equal to that of the conventional standard nut. Its primary purpose is to provide.

【0005】[0005]

【課題を解決するための手段】上記目的を達成する為に
本発明では次のような技術的手段を講じた。即ち、本発
明にかかる緩み止めナットにあっては、軸芯を貫通する
ネジ孔1を備えたナット2の下面を一方向に傾く緩やか
な傾斜面3に形成し、この傾斜面3の傾斜角度αを、ナ
ット2をボルトAに螺合して被締め付け部材Bに所定の
トルクで締め付けたときに、傾斜面3が被締め付け部材
Bの上面に圧接することが可能な角度範囲内で設定した
構造としたものである。
In order to achieve the above object, the present invention takes the following technical measures. That is, in the locking nut according to the present invention, the lower surface of the nut 2 having the screw hole 1 penetrating through the axis is formed as a gentle inclined surface 3 inclined in one direction. α is set within an angle range in which the inclined surface 3 can be pressed against the upper surface of the tightened member B when the nut 2 is screwed into the bolt A and tightened to the tightened member B with a predetermined torque. It is a structure.

【0006】上記でいう所定のトルクとは、スタンダー
ドナットの標準締め付けトルクに準じるか、もしくはそ
れに10パーセント程度加えられたトルクを指すもので
あり、また、上記傾斜角度αは例えばM12六角ナット
では1.5〜2.5度の範囲で設定するのがよい。
The above-mentioned predetermined torque refers to a torque equivalent to the standard tightening torque of the standard nut or about 10% added thereto, and the inclination angle α is, for example, 1 in an M12 hexagon nut. It is good to set in the range of 0.5 to 2.5 degrees.

【0007】[0007]

【発明の実施の形態】以下、本発明の構成を図に示した
実施例に基ずき説明する。図において、符号2は本発明
に係る緩み止めナットあって、軸芯を貫通するネジ孔1
を備え、外周が六角に形成されている。そしてナット2
の締め付け座面、即ち下面が一方向に傾く緩やかな傾斜
面3に形成されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below based on an embodiment shown in the drawings. In the drawing, reference numeral 2 denotes a locking nut according to the present invention, and a screw hole 1 penetrating the shaft core.
And the outer periphery is formed in a hexagonal shape. And nut 2
, That is, a gentle inclined surface 3 whose lower surface is inclined in one direction.

【0008】上記傾斜面3の傾斜角度αは、ナット2を
所定のトルクで締め付けたときに、ナットの小さな傾き
によって、ボルト、ナットのネジ噛み合い部分の隙間を
吸収すると同時に、ナット傾斜面3が被締め付け部材B
の上面に圧接することが可能な角度範囲内で設定され
る。この傾斜角度αは、サイズや等級及びナット素材に
よって異なるが、例えばM12の2級鉄製ナットで1.
5〜2.5度程度がこのましい。
The inclination angle α of the inclined surface 3 is such that when the nut 2 is tightened with a predetermined torque, a small inclination of the nut absorbs a gap between the bolt and the nut engaged with the screw, and at the same time, the nut inclined surface 3 Fastened member B
Is set within an angle range that can be pressed against the upper surface of the. The inclination angle α differs depending on the size, grade, and nut material, but is, for example, 1 mm for an M12 class 2 iron nut.
About 5 to 2.5 degrees is preferable.

【0009】また上記でいう所定のトルクとは、スタン
ダードナットの標準締め付けトルクに準じるか、もしく
はそれに10パーセント程度加えられたトルクを指すも
のであり、例えばM12の鉄製六角ナットでは400〜
450kgf.cmが好ましい。
The above-mentioned predetermined torque refers to a torque equivalent to the standard tightening torque of the standard nut or about 10% added thereto. For example, an M12 iron hexagon nut has a torque of 400 to 400%.
450 kgf.cm is preferred.

【0010】上記のごとく構成されたナット2を図3に
示すように、ボルトAに螺合して被締付け部材Bに向か
って螺進させてその傾斜面3を被締付け部材Bの上面に
接触させたあと、更にナット2を所定トルクで強く締め
付けると、図4に示すように傾斜面の働きにより、ナッ
ト2がボルト、ナット間のネジ噛み合い部分の隙間を埋
めながら傾斜姿勢に強制された形で定着する。この状態
にあっては、図4の矢印で示すとおり、ナット2の傾斜
上位側にあるネジと傾斜下位側にあるネジがボルト側面
を裁断方向に圧迫し、同時に傾斜面3が被締め付け部材
Bの上面に圧接する。この内部応力によってナット2と
ボルトAのネジの噛み合いを固くロックしてナット2の
緩みの発生を防止することができる。
As shown in FIG. 3, the nut 2 constructed as described above is screwed into a bolt A and screwed toward the member B to be tightened so that its inclined surface 3 contacts the upper surface of the member B to be tightened. Then, when the nut 2 is further strongly tightened with a predetermined torque, as shown in FIG. 4, the nut 2 is forced into the inclined position by filling the gap between the bolt and the nut engaged with the screw by the action of the inclined surface. To settle. In this state, as shown by the arrow in FIG. 4, the screw on the upper inclined side and the screw on the lower inclined side of the nut 2 press the bolt side surface in the cutting direction, and at the same time, the inclined surface 3 causes the member B to be tightened. Pressure contact with the upper surface. This internal stress firmly locks the engagement between the nut 2 and the screw of the bolt A, thereby preventing the nut 2 from becoming loose.

【0011】尚、本発明者が、M12の金属六角ナット
で傾斜面3の傾斜角度αを2.36度に設定したものを
作成し、第三者の試験センター(財団法人日本品質保証
機構)で、NS式高速ねじ弛み試験機によって振動弛み
試験を依頼した結果、スタンダードナット4個が何れも
20秒以内で緩んだのに対し、試験サンプル4個の何れ
も3分以上の振動に耐えることができた。
The inventor made a M12 metal hexagon nut in which the inclination angle α of the inclined surface 3 was set to 2.36 degrees, and a third-party test center (Japan Quality Assurance Organization) Then, as a result of requesting a vibration slack test using an NS type high-speed screw slack tester, all four standard nuts loosened within 20 seconds, but all four test samples could withstand vibration for 3 minutes or more. Was completed.

【0012】以上本発明の一実施例について説明した
が、本発明は必ずしもこれらの実施例構造のみに限定さ
れるものではない。例えば上記したような六角ナットに
限らずフランジ付きナットや丸径ナットにも同様に応用
できるものである。またナットを形成する素材も金属に
限らず樹脂で作ることも可能である。その他本発明では
その構成要件を備え、かつ本発明の目的を達成し、下記
の効果を奏する範囲内において適宜改変して実施できる
ものである。
Although the embodiments of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments. For example, the present invention can be applied not only to the hexagon nut described above but also to a nut with a flange and a round nut. The material for forming the nut is not limited to metal, but can be made of resin. In addition, the present invention can be implemented by appropriately modifying it within the scope of providing the constituent elements, achieving the object of the present invention, and achieving the following effects.

【0012】[0012]

【発明の効果】以上詳述したごとく本発明によれば、ナ
ットの下面を所定の角度で傾斜面に形成した簡単な構造
であるから、従来と同じようにナットホーマーで製造で
きると共に、何ら二次加工の手間を省略でき、これによ
り、スタンダードナットと殆ど変わらない価格で提供す
ることができるものでありながら、特定角度の傾斜面の
働きによりナット内部に横方向への内部応力と締め付け
座面への応力を発生させて、確実な緩み止め効果が発揮
することができ、更にはナットのボルトへの螺入がスタ
ンダードナットと全く同じように手で軽く螺入させるこ
とができるから作業効率がよい、といった種々の優れた
効果がある。
As described above in detail, according to the present invention, since the nut has a simple structure in which the lower surface is formed at an inclined surface at a predetermined angle, it can be manufactured with a nut former as in the conventional case. The time required for the next processing can be omitted, and while this can be provided at a price that is almost the same as the standard nut, the internal stress in the nut in the lateral direction and the tightening seat surface are created inside the nut by the function of the inclined surface at a specific angle. To prevent loosening, and the nut can be screwed lightly by hand just like a standard nut. There are various excellent effects such as good.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る緩み止めナットの一実施例を示す
一部断面正面図。
FIG. 1 is a partially sectional front view showing an embodiment of a locking nut according to the present invention.

【図2】上記ナットの平面図。FIG. 2 is a plan view of the nut.

【図3】上記ナットの使用過程を示す断面図。FIG. 3 is a sectional view showing a process of using the nut.

【図4】上記ナットの使用状態を示す断面図。FIG. 4 is a sectional view showing a use state of the nut.

【符号の説明】[Explanation of symbols]

1 ネジ孔 2 ナット 3 傾斜面 A ボルト B 被締め付け部材 α 傾斜面の傾斜角度 DESCRIPTION OF SYMBOLS 1 Screw hole 2 Nut 3 Inclined surface A Bolt B Clamped member α Inclined angle of inclined surface

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 軸芯を貫通するネジ孔(1)を備えたナッ
ト(2)の下面を一方向に傾く緩やかな傾斜面(3)に形成
し、この傾斜面(3)の傾斜角度αを、ナット(2)をボルト
(A)に螺合して被締め付け部材(B)に所定のトルクで締め
付けたときに、傾斜面(3)が被締め付け部材(C)の上面に
圧接することが可能な角度範囲内で設定したことを特徴
とする緩み止めナット。
1. A lower surface of a nut (2) provided with a screw hole (1) penetrating a shaft core is formed in a gentle inclined surface (3) inclined in one direction, and an inclination angle α of the inclined surface (3) is formed. And nuts (2) with bolts
When the screw (A) is screwed and tightened to the tightened member (B) with a predetermined torque, the angle is set within the angle range where the inclined surface (3) can press against the upper surface of the tightened member (C). A locking nut characterized by the following.
JP17290797A 1997-06-14 1997-06-14 Locking nut Pending JPH112227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17290797A JPH112227A (en) 1997-06-14 1997-06-14 Locking nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17290797A JPH112227A (en) 1997-06-14 1997-06-14 Locking nut

Publications (1)

Publication Number Publication Date
JPH112227A true JPH112227A (en) 1999-01-06

Family

ID=15950562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17290797A Pending JPH112227A (en) 1997-06-14 1997-06-14 Locking nut

Country Status (1)

Country Link
JP (1) JPH112227A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010164128A (en) * 2009-01-15 2010-07-29 Hamanaka Nut Kk Female screw part
JP2014055637A (en) * 2012-09-13 2014-03-27 Sanco Industry Kk Anti-loose washer
CN110454484A (en) * 2019-08-16 2019-11-15 郑云兵 A kind of stop nut

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010164128A (en) * 2009-01-15 2010-07-29 Hamanaka Nut Kk Female screw part
JP2014055637A (en) * 2012-09-13 2014-03-27 Sanco Industry Kk Anti-loose washer
CN110454484A (en) * 2019-08-16 2019-11-15 郑云兵 A kind of stop nut

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