JP2009052648A - Nut detent - Google Patents

Nut detent Download PDF

Info

Publication number
JP2009052648A
JP2009052648A JP2007219468A JP2007219468A JP2009052648A JP 2009052648 A JP2009052648 A JP 2009052648A JP 2007219468 A JP2007219468 A JP 2007219468A JP 2007219468 A JP2007219468 A JP 2007219468A JP 2009052648 A JP2009052648 A JP 2009052648A
Authority
JP
Japan
Prior art keywords
coil spring
nut
screw
bolt
loosening
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
JP2007219468A
Other languages
Japanese (ja)
Inventor
Shigeki Kohiga
茂樹 小比賀
Masaaki Sudo
昌明 須藤
Yuji Kawato
雄二 川人
Toshinobu Fujii
敏信 藤井
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.)
TECHNO SUCCESS KK
Shikoku Electric Power Co Inc
Original Assignee
TECHNO SUCCESS KK
Shikoku Electric Power Co Inc
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 TECHNO SUCCESS KK, Shikoku Electric Power Co Inc filed Critical TECHNO SUCCESS KK
Priority to JP2007219468A priority Critical patent/JP2009052648A/en
Publication of JP2009052648A publication Critical patent/JP2009052648A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Springs (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nut detent capable of being attached in a single operation, having a simple structure, and durable in use. <P>SOLUTION: The nut detent 10 is provided with a spiral coil spring 11 having an inside diameter d11 smaller than an outside diameter d5 of a screw 5 of a bolt 1 and having overlapped parts 12A and 12B overlapped in a part in a plane view, and a pair of ring shaped pressing parts 13 and 14 extending from both ends 11a and 11b of the coil spring 11 to a plane direction separated from the axis O of the coil spring 11 while confronting with each other. When the pressing parts 13 and 14 are pressed to a direction approaching mutually and overlapping of the overlapped parts 12A and 12B is released, the inside diameter d11 of the coil spring 11 gets larger than the outside diameter d5 of the screw 5, and thereby, the coil spring 11 can be elastically fitted and attached along a screw groove 5b of the bolt 1. At least one end of the pressing parts 13 and 14 forms a linear protrusion 15 extended to the axis O more than the coil spring 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ナットの緩み止め具、特に鉄塔等の建築構造物におけるボルト緩みを防止するためのナットの緩み止め具に関する。   The present invention relates to a nut locking device, and more particularly to a nut locking device for preventing bolts from loosening in a building structure such as a steel tower.

従来から、ナットの緩み止めを防止する緩み止め技術が広く普及している。例えば、ナット上面にフリクションリングをカシメ加工により固定して一体化させり、くさびの原理を利用した緩み止め用の特殊ナットが市販されている。しかしながら、ナットに特殊な加工を施すものは、ナットの価格が高騰するという課題がある。   Conventionally, a locking technology for preventing a nut from locking has been widely used. For example, a special nut for preventing loosening using a wedge principle in which a friction ring is fixed and integrated on the upper surface of the nut by caulking is commercially available. However, the thing which performs special processing to a nut has the subject that the price of a nut rises.

一方、弾性素線を螺旋状に加工したコイルバネの弾性力を利用した緩み止め具も多数提案されている（例えば、特許文献１、２参照）。コイルバネは、特殊ナットに比べて製造工程が簡易であるという特徴を備える。   On the other hand, a number of loosening stoppers using the elastic force of a coil spring obtained by processing an elastic strand into a spiral shape have been proposed (see, for example, Patent Documents 1 and 2). The coil spring has a feature that the manufacturing process is simpler than that of the special nut.

また、円錐状の傾斜面周縁部にナットと同じ六面の側壁部を一体形成させた緩み止め具も提案されている（例えば、特許文献３参照）。
特開２００４−１００９５２号公報（従来技術の欄及び特許請求の範囲の欄） WO２００３−０９５８５０号公報 特開平９−３０００４２号公報 In addition, a loosening stop device in which a hexagonal side wall portion, which is the same as a nut, is integrally formed on a peripheral edge portion of a conical inclined surface has also been proposed (see, for example, Patent Document 3).
Japanese Patent Application Laid-Open No. 2004-1000095 (prior art column and claims column) WO2003-095850 Japanese Patent Laid-Open No. 9-300042

しかしながら、特許文献１又は２記載のコイルバネは、弾性素線を幾重にも螺旋状に巻いているので装着に手間取るという課題がある。   However, the coil spring described in Patent Document 1 or 2 has a problem that it takes time to mount since the elastic strands are spirally wound in layers.

また、特許文献３の緩み止め具は、特殊ナットと同様に製造するには構造が複雑であるという課題点がある。   Moreover, the loosening stopper of patent document 3 has the subject that a structure is complicated to manufacture like a special nut.

ナットの緩み止め具としては、コストやメンテナンス等を含めた作業能率等を考慮した施工性に加えて、長期の使用に耐えるための衝撃試験や振動付加による脱落試験にも耐えるという、緩み止め具としての本来の性能も備えている必要がある。   As a nut locking device, in addition to workability that takes into account work efficiency including cost and maintenance, etc., it also has a locking device that can withstand impact tests to withstand long-term use and dropout tests due to vibration. It is necessary to have the original performance as.

本発明は、ワンタッチで取付が可能であって、構造が簡単で、且つ、長期の使用にも耐えることができるナットの緩み止め具を提供することを目的とする。   An object of the present invention is to provide a nut locking device that can be attached with one touch, has a simple structure, and can withstand long-term use.

本発明は、ボルトのネジ外径よりも小さな内径を有し、平面視の一部分で重複する重複部を有する螺旋状のコイルバネ部と、該コイルバネ部の両端から互いに対向して前記コイルバネ部の中心軸から遠ざかる平面方向に向けて延設された一対の輪状の押圧部とを備え、前記押圧部を互いに近接する方向に向けて押圧させて前記重複部の重複を解除させた場合に前記コイルバネ部の内径は前記ネジの外径よりも大きくなる様に構成されることにより、前記コイルバネ部を前記ボルトのネジ溝に沿って弾性的に嵌合させて装着可能なナットの緩み止め具であって、前記押圧部の少なくとも一端には、前記コイルバネ部よりも前記中心軸に向けて延設された線状突起部を備えていることを特徴とするナットの緩み止め具である。   The present invention relates to a helical coil spring portion having an inner diameter smaller than the screw outer diameter of a bolt and having an overlapping portion overlapping in a part in plan view, and the center of the coil spring portion facing each other from both ends of the coil spring portion. And a pair of ring-shaped pressing portions extending in a planar direction away from the shaft, and the coil spring portion when the overlapping portions are released by pressing the pressing portions toward directions close to each other. A nut locking device that can be mounted by elastically fitting the coil spring portion along the screw groove of the bolt by being configured to have an inner diameter larger than the outer diameter of the screw. The nut locking stopper includes a linear protrusion extending toward the central axis rather than the coil spring at at least one end of the pressing portion.

このように構成すれば、押圧部を互いに近接する方向に向けて押圧させることによりコイルバネ部の内径をボルトのネジの外径よりも増大させ、緩み止めを行いたいボルト尾部から線状突起部が内側となる状態でコイルバネ部を挿通させることができる。線状突起部がナットに弾接された状態で押圧部の押圧を解除させると、線状突起部はナットの側面近傍のネジ溝に向けて弾性的に押圧されつつコイルバネ部はネジ溝に沿って弾性的に嵌合される。   If comprised in this way, the inner diameter of a coil spring part will be made larger than the outer diameter of the screw of a bolt by pushing a press part toward the direction which adjoins mutually, and a linear projection part will be from a bolt tail part which wants to carry out locking prevention. The coil spring portion can be inserted in a state of being inside. When the pressing of the pressing portion is released in a state where the linear protruding portion is elastically contacted with the nut, the linear protruding portion is elastically pressed toward the screw groove near the side surface of the nut and the coil spring portion is along the screw groove. And is elastically fitted.

ナットが緩む方向に回転した場合には、ナットの外面が線状突起部や重複部を押圧するが、ナット側（内側）に位置する線状突起部や重複部が外側の重複部をネジ溝に向けて押圧し、その押圧力によりネジ溝の中に重複部が押さえつけられ、ネジ溝が閉塞されるので、ナットの緩みが確実に防止される。   When the nut rotates in the loosening direction, the outer surface of the nut presses the linear protrusions and overlapping parts, but the linear protrusions and overlapping parts located on the nut side (inner side) are threaded on the outer overlapping parts. The overlapping portion is pressed into the screw groove by the pressing force, and the screw groove is closed, so that the nut is surely prevented from loosening.

本発明に従えば、ワンタッチで取付が可能であって、構造が簡単で、且つ、長期の使用にも耐えることができるナットの緩み止め具を提供することができる。   According to the present invention, it is possible to provide a nut locking device that can be attached with one touch, has a simple structure, and can withstand long-term use.

以下、図面を参照しつつ本発明の実施の形態について説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

まず、図１は、本発明に係るナット緩み止め具１０の概要を説明する図である。この緩み止め具１０は、弾性を有する素線（例えば、ステンレス製の弾性素線）から形成され、コイルバネ部１１を本体として有する。このコイルバネ部１１は、ボルト１の脚部４に形成されたネジ５の外径ｄ５よりも小さな内径ｄ１１を有し、平面視の一部分で重複する重複部（外側重複部１２Ａ、内側重複部１２Ｂ）を有している。   First, FIG. 1 is a diagram illustrating an outline of a nut loosening stopper 10 according to the present invention. The loosening stopper 10 is formed of an elastic wire (for example, a stainless steel elastic wire) and has a coil spring portion 11 as a main body. The coil spring portion 11 has an inner diameter d11 smaller than the outer diameter d5 of the screw 5 formed on the leg portion 4 of the bolt 1, and overlaps in a part in plan view (an outer overlapping portion 12A and an inner overlapping portion 12B). )have.

コイルバネ部１１の両端（外側端１１ａ、内側端１１ｂ）には、それぞれ輪状の押圧部（外側押圧部１３、内側押圧部１４）が素線を延設させて設けられている。この押圧部１３，１４はコイルバネ部１１の中心軸Ｏから遠ざかる方向に向けて形成されている。これらの押圧部１３，１４の少なくとも一方、（実施例では内側押圧部１４）を形成する素線の末端は、内側押圧部１４よりもさらに延設されて、コイルバネ部１１よりも中心軸Ｏに向けて延設されている線状突起部１５を備えている。   At both ends (outer end 11a and inner end 11b) of the coil spring portion 11, ring-shaped pressing portions (outer pressing portion 13 and inner pressing portion 14) are provided by extending the wires. The pressing portions 13 and 14 are formed in a direction away from the central axis O of the coil spring portion 11. The end of the wire forming at least one of these pressing portions 13, 14 (in the embodiment, the inner pressing portion 14) extends further than the inner pressing portion 14, and is more central to the central axis O than the coil spring portion 11. The linear protrusion part 15 extended toward is provided.

つぎに、以上のように構成された緩み止め具１０をナット６の緩み止めに用いる態様について図１〜図３を用いて説明する。これらの図においては、符号６は、ナットであり、このナット６は、例えば、ＪＩＳ規格の六角ナットである。このナット６は、図３に示すように、内側にネジ山７ａ、ネジ溝７ｂから構成されるネジ７を有し、ナット６の側面６ａにはそのネジ７の一部としての約３０°の傾斜面６ｂが形成されている。   Next, a mode in which the loosening stopper 10 configured as described above is used to prevent the nut 6 from loosening will be described with reference to FIGS. In these drawings, reference numeral 6 denotes a nut, and this nut 6 is, for example, a JIS standard hexagon nut. As shown in FIG. 3, the nut 6 has a screw 7 composed of a screw thread 7 a and a screw groove 7 b on the inner side, and a side surface 6 a of the nut 6 has about 30 ° as a part of the screw 7. An inclined surface 6b is formed.

図１に示すように、外側押圧部１３と内側押圧部１４を、例えば、不図示の人差し指と親指とで互いに近接する矢印方向に向けて押圧させる。これにより、図１の想像線で示すように重複部１２Ａ、１２Ｂの重複が解除され、コイルバネ部１１の内径は、ｄ１１からｄ´１１へと増大する。   As shown in FIG. 1, the outer pressing portion 13 and the inner pressing portion 14 are pressed toward, for example, arrows that are close to each other with an index finger and a thumb (not shown). Thereby, as shown by the imaginary line in FIG. 1, the overlapping of the overlapping portions 12A and 12B is released, and the inner diameter of the coil spring portion 11 increases from d11 to d′ 11.

内径ｄ´１１がネジ５の外径ｄ５（ネジ山５ａの外径）よりも十分に大きくなる程度に押圧部１３，１４を押圧することにより、コイルバネ部１１はボルト尾部３から脚部４に挿嵌可能となる。   The coil spring portion 11 is moved from the bolt tail portion 3 to the leg portion 4 by pressing the pressing portions 13 and 14 so that the inner diameter d′ 11 is sufficiently larger than the outer diameter d5 of the screw 5 (the outer diameter of the screw thread 5a). Insertion becomes possible.

ネジ５の外径ｄ５よりも内径ｄ´１１を増大させた状態で、緩み止めを行いたいボルト尾部３から線状突起部１５が内側（ナット６側）となる状態でコイルバネ部１１を挿通させる。ついで、押圧部１３，１４の押圧を解除するとコイルバネ部１１の内径ｄ´１１は元の内径ｄ１１に戻ろうとし、これにより、コイルバネ部１１は、図２に示すように、ネジ溝５ｂに沿って弾性的に嵌合される。   In a state where the inner diameter d′ 11 is larger than the outer diameter d5 of the screw 5, the coil spring portion 11 is inserted from the bolt tail portion 3 to be loosened and the linear protrusion portion 15 is on the inner side (nut 6 side). . Next, when the pressing of the pressing portions 13 and 14 is released, the inner diameter d′ 11 of the coil spring portion 11 tries to return to the original inner diameter d11, and as a result, the coil spring portion 11 extends along the screw groove 5b as shown in FIG. And is elastically fitted.

ここで、線状突起部１５がナット６の側面６ａ及び傾斜面６ｂに弾接した状態で押圧部１３，１４の押圧を解除すると、線状突起部１５は傾斜面６ｂ近傍のネジ溝５ｂに沿って嵌合される。   Here, when the pressing of the pressing portions 13 and 14 is released in a state where the linear protruding portion 15 is in elastic contact with the side surface 6a and the inclined surface 6b of the nut 6, the linear protruding portion 15 is inserted into the screw groove 5b near the inclined surface 6b. Mated along.

つぎに、以上のように構成された緩み止め具１０の作用について説明する。   Next, the operation of the loosening stopper 10 configured as described above will be described.

ナット６が緩む方向（矢印ａ方向）に回転した場合には、図２に示すように、この傾斜面６ｂと線状突起部１５とが干渉して、それ以上のナット６の緩みは線状突起部１５との干渉により防止される。   When the nut 6 rotates in the loosening direction (arrow a direction), as shown in FIG. 2, the inclined surface 6b interferes with the linear protrusion 15 and further loosening of the nut 6 is linear. This is prevented by interference with the protrusion 15.

仮に、さらにナット６が緩む方向（矢印ａ方向）に回転しようとすると、線状突起部１５はネジ溝５ｂに向けてさらに押圧され、傾斜面６ｂとネジ溝５ｂとの間で圧縮され、それ以上のナット１の緩みが防止される。   If the nut 6 further rotates in the loosening direction (arrow a direction), the linear protrusion 15 is further pressed toward the screw groove 5b and is compressed between the inclined surface 6b and the screw groove 5b. The loosening of the nut 1 is prevented.

また、ナット１の傾斜面６ｂは、内側押圧部１４の内側重複部１２Ｂ側の付け根付近１４Ａをも押圧する。ここで、この内側押圧部１４は中心軸Ｏから遠ざかる方向に向けて形成されているので、この付け根付近１４Ａは、図３に挿圧力Ｆで示すように、外側重複部１２Ａをネジ溝５ｂに向けて押圧して圧縮することになるので、この付け根付近１４Ａの押圧力Ｆにより外側重複部１２Ａはさらにネジ溝５ｂの中に向けて押さえ付けられる。   The inclined surface 6b of the nut 1 also presses the base vicinity 14A on the inner overlapping portion 12B side of the inner pressing portion 14. Here, since the inner pressing portion 14 is formed in a direction away from the central axis O, the vicinity 14A of the base is formed by inserting the outer overlapping portion 12A into the screw groove 5b as shown by the insertion pressure F in FIG. The outer overlapping portion 12A is further pressed into the screw groove 5b by the pressing force F in the vicinity of the base 14A.

これにより、この押圧力Ｆの作用により、ナット６の緩み防止は一層確実となり、衝撃試験や振動付加による脱落試験にも耐えることができる。   As a result, the action of the pressing force F further prevents the nut 6 from loosening, and can withstand an impact test and a dropout test by applying vibration.

この緩み止め具１０を取り外す際には、例えば、押圧部１３，１４を不図示の人差し指と親指とで互いに近接する方向に向けて押圧させ、内径ｄ´１１を外径ｄ５よりも拡開させて取り外せばよい。もちろんネジ５の螺合を解除する方向で緩ませて取り外してもよい。   When removing the loosening stopper 10, for example, the pressing portions 13 and 14 are pressed toward the directions close to each other by an index finger and a thumb (not shown), and the inner diameter d′ 11 is expanded more than the outer diameter d5. Remove it. Of course, the screw 5 may be loosened and removed in the direction of releasing the screwing.

これにより、ワンタッチで取付が可能であって、構造が簡単で、且つ、長期の使用にも耐えることができるナットの緩み止め具を提供することができる。
（実施例）
送電鉄塔の固定に用いられるネジ山間のピッチが２mmであるM１６六角孔付きボルトを用い、線径１．０mm及び線径１．５mmのステンレス製の弾性素線から形成されたコイルバネ部１１を本体として有し、線状突起部１５を備える図１に記載の緩み止め具１０（本発明実施品）、及び本発明実施品の押圧部１３，１４を同一線径のバネを利用して互いに離反する方向に付勢させることにより線条のネジ溝への食い込みを増大させた緩み止め具（改造品）、及び市販の各種緩み防止金具との対比実験を行った。 Accordingly, it is possible to provide a nut locking device that can be attached with one touch, has a simple structure, and can withstand long-term use.
(Example)
A coil spring portion 11 made of an elastic wire made of stainless steel having a wire diameter of 1.0 mm and a wire diameter of 1.5 mm is used as a main body using an M16 hexagon socket head cap screw with a pitch of 2 mm used for fixing a power transmission tower. 1 having the linear protrusions 15 and the pressing portions 13 and 14 of the product of the present invention separated from each other using springs of the same wire diameter. Comparison experiments were conducted with a loosening stopper (modified product) that increased the biting of the filament into the thread groove by urging in the direction in which it was pushed, and with various commercially available loosening prevention fittings.

緩み止め防止効果は、試験体に緩み止め具を取り付けて加振する繰り返し試験（繰り返し荷重試験及び衝撃振動試験）を行い、ボルトの緩み状況を確認した。   The anti-loosening effect was confirmed by conducting a repetitive test (repeated load test and impact vibration test) in which a loose stopper was attached to the specimen and oscillated to confirm the looseness of the bolt.

（繰り返し荷重試験）：東京衡機製造所のハイドロパルス１６０kN疲労試験機を用い、試験体の軸方向に繰り返し荷重を載荷し、許容ボルト強度の５０％〜１５０％の荷重振幅を与える強風時を想定した条件１および許容ボルト強度の−１００％〜＋１００％荷重振幅を与える平常時を想定した条件２をそれぞれ３０００回繰り返した。   (Repeated load test): Using a hydropulse 160kN fatigue tester manufactured by Tokyo Henki Plant, assuming repeated strong loads in the axial direction of the specimen and giving a load amplitude of 50% to 150% of the allowable bolt strength Condition 1 and Condition 2 assuming normal times giving a load amplitude of −100% to + 100% of the allowable bolt strength were repeated 3000 times.

（衝撃振動試験）：ハードロック工業株式会社の高速ゆるみ測定試験機を用い、米国航空規格NAS３３５０に準拠して、繰り返し回数３００００回の条件にて「繰り返し衝撃形ねじ緩み試験」を行った。   (Impact Vibration Test): Using a high-speed looseness measurement tester manufactured by Hard Rock Industry Co., Ltd., a “repetitive impact type screw looseness test” was performed under the conditions of 30000 repetitions in accordance with the US Aviation Standard NAS3350.

ここで、いずれの試験条件も鉄塔を想定した場合、５０年間を超える繰り返しを想定した条件に相当している。   Here, when all the test conditions are assumed to be a steel tower, they correspond to the conditions assuming repetition over 50 years.

（評価）：緩み止め効果の評価としては、ナットの脱落の有無、緩みが継続的に進行するか否か、装着時の施工性の3点について評価を行った。   (Evaluation): As an evaluation of the loosening prevention effect, three points were evaluated: whether or not nuts were dropped, whether or not loosening continued, and workability during mounting.

（結果）本発明品は、市販品を含めて構造が最も簡易で、ワンタッチで取り付けられることから取付施工性が際だってよかった。つぎに、取付後の条件１の繰り返し振動試験では、いずれの緩み止め具においてもボルトが緩むことは無かった。   (Result) The product of the present invention has the simplest structure including a commercial product and can be mounted with a single touch, so that the installation workability is outstanding. Next, in the repeated vibration test of Condition 1 after mounting, the bolts did not loosen in any of the loosening stoppers.

これに対し、条件２の繰り返し振動試験では、本発明実施品（改造品を含む）では、７０〜８０回程度の範囲内で緩み始めが確認されたが、ボルトが緩むことにより本発明に係る緩み止め具（特に、線状突起部１５の先端）がボルトのネジ溝に食い込んだ後は、それ以上のボルトの緩みは生じることはなかった。   On the other hand, in the repeated vibration test of Condition 2, in the product of the present invention (including the modified product), it was confirmed that the loosening started within the range of about 70 to 80 times, but the bolts are loosened and the present invention is concerned. No further loosening of the bolt occurred after the loosening stop (particularly, the tip of the linear protrusion 15) bite into the screw groove of the bolt.

なお、線径が１．０mmの場合に比べて線径が１．５mmの場合の方がネジ溝への食い込みが早かったが、緩み止め具のネジ溝への食い込み後にはいずれの場合にもそれ以上のボルト緩みは生じることはなかった。   It should be noted that the wire diameter was 1.5 mm faster than the wire diameter of 1.0 mm, but in any case after the loosening stop bite into the screw groove. No further bolt loosening occurred.

また、同一線径のバネを利用して押圧部１３，１４を互いに離反する方向に付勢させる試み（改造品）は、付勢部材を取り付けるための手間が余計に必要であるということを除いては性能上の向上は実質的に確認できなかった。   In addition, an attempt to urge the pressing portions 13 and 14 in directions away from each other using a spring having the same wire diameter (modified product) except that an extra effort is required to attach the urging member. In fact, no improvement in performance could be confirmed.

以上より、本発明に係る緩み止め具は、必要最小限の簡易な構造により、必要且つ十分な作用効果を奏していることが確認された。これにより、本発明に従えば、ワンタッチで取付が可能であって、構造が簡単で、且つ、長期の使用にも耐えることができるナットの緩み止め具を提供することが確認された。   From the above, it has been confirmed that the loosening stopper according to the present invention has a necessary and sufficient operational effect with a minimum necessary simple structure. Thus, according to the present invention, it was confirmed that a nut locking device that can be attached with one touch, has a simple structure, and can withstand long-term use is provided.

本発明に係る緩み止め具を説明する斜視図である。It is a perspective view explaining the locking device according to the present invention. 本発明に係る緩み止め具の使用状況を説明する斜視図である。It is a perspective view explaining the use condition of the loosening stopper which concerns on this invention. 本発明に係る緩み止め具の作用を図２のＸ−Ｘ線で切断した模式図により説明する図である。It is a figure explaining the effect | action of the loosening stopper which concerns on this invention with the schematic diagram cut | disconnected by the XX line of FIG.

符号の説明Explanation of symbols

ｄ５：（ネジの）外径
ｄ１１：（コイルバネ部の）内径
Ｆ：押圧力
Ｏ：中心軸
１：ボルト
３：ボルト尾部
４：脚部
５：ネジ
５ａ：ネジ山
５ｂ：ネジ溝
６：ナット
６ａ：側面
６ｂ：傾斜面
７：ネジ
７ａ：ネジ山
７ｂ：ネジ溝
１０：緩み止め具
１１：コイルバネ部（本体）
１１ａ：外側端（両端）
１１ｂ：内側端（両端）
１２Ａ：外側重複部（重複部）
１２Ｂ：内側重複部（重複部）
１３：外側押圧部
１４：内側（ナット側）押圧部
１４Ａ：付け根付近
１５：線状突起部 d5: outer diameter (of the screw) d11: inner diameter F (of the coil spring portion): pressing force O: central axis 1: bolt 3: bolt tail 4: leg 5: screw 5a: screw thread 5b: screw groove 6: nut 6a : Side surface 6b: Inclined surface 7: Screw 7a: Screw thread 7b: Screw groove 10: Loosening stopper 11: Coil spring part (main body)
11a: Outer end (both ends)
11b: Inner end (both ends)
12A: Outside overlapping part (overlapping part)
12B: Inner overlapping part (overlapping part)
13: Outer pressing part 14: Inner (nut side) pressing part 14A: Near the base 15: Linear protrusion

Claims (1)

ボルトのネジの外径よりも小さな内径を有し、平面視の一部分で重複する重複部を有する螺旋状のコイルバネ部と、該コイルバネ部の両端から互いに対向して前記コイルバネ部の中心軸から遠ざかる平面方向に向けて延設された一対の輪状の押圧部とを備え、
前記押圧部を互いに近接する方向に向けて押圧させて前記重複部の重複を解除させた場合に前記コイルバネ部の内径は前記ネジの外径よりも大きくなる様に構成されることにより、前記コイルバネ部を前記ボルトのネジ溝に沿って弾性的に嵌合させて装着可能なナットの緩み止め具であって、
前記押圧部の少なくとも一端は、前記コイルバネ部よりも前記中心軸に向けて延設された線状突起部を形成していることを特徴とするナットの緩み止め具。 A spiral coil spring portion having an inner diameter smaller than the outer diameter of the screw of the bolt and having an overlapping portion in a plan view, and facing away from both ends of the coil spring portion and away from the central axis of the coil spring portion A pair of ring-shaped pressing portions extending in the plane direction,
The coil spring is configured so that the inner diameter of the coil spring portion is larger than the outer diameter of the screw when the pressing portions are pressed toward each other to release the overlap of the overlapping portions. A nut loosening stopper that can be fitted by elastically fitting the portion along the thread groove of the bolt,
At least one end of the pressing portion forms a linear protrusion extending toward the central axis with respect to the coil spring portion.
JP2007219468A 2007-08-27 2007-08-27 Nut detent Pending JP2009052648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007219468A JP2009052648A (en) 2007-08-27 2007-08-27 Nut detent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007219468A JP2009052648A (en) 2007-08-27 2007-08-27 Nut detent

Publications (1)

Publication Number Publication Date
JP2009052648A true JP2009052648A (en) 2009-03-12

Family

ID=40503896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007219468A Pending JP2009052648A (en) 2007-08-27 2007-08-27 Nut detent

Country Status (1)

Country Link
JP (1) JP2009052648A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011174600A (en) * 2010-01-28 2011-09-08 Bc Seisakusho:Kk Nut fall preventing clip
JP2012041938A (en) * 2010-08-12 2012-03-01 Maruemu Seisakusho:Kk Nut loosening preventive device
JP2015014308A (en) * 2013-07-04 2015-01-22 濱中ナット株式会社 Sag lock nut
WO2018155466A1 (en) * 2017-02-23 2018-08-30 株式会社アドバネクス Falling-off prevention tool
KR102108429B1 (en) * 2018-11-09 2020-05-11 주식회사 코어볼트 Anti-loosing nut equipped with locking pin and production method therof
WO2020162522A1 (en) * 2019-02-07 2020-08-13 株式会社アドバネクス Fall prevention tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6122916U (en) * 1984-07-14 1986-02-10 五十雄 柳田 Clip to prevent nuts from falling off
JPS61148910U (en) * 1985-03-06 1986-09-13
JP2004316715A (en) * 2003-04-14 2004-11-11 Kawada Construction Co Ltd Locking member of nut

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6122916U (en) * 1984-07-14 1986-02-10 五十雄 柳田 Clip to prevent nuts from falling off
JPS61148910U (en) * 1985-03-06 1986-09-13
JP2004316715A (en) * 2003-04-14 2004-11-11 Kawada Construction Co Ltd Locking member of nut

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011174600A (en) * 2010-01-28 2011-09-08 Bc Seisakusho:Kk Nut fall preventing clip
JP2012041938A (en) * 2010-08-12 2012-03-01 Maruemu Seisakusho:Kk Nut loosening preventive device
JP2015014308A (en) * 2013-07-04 2015-01-22 濱中ナット株式会社 Sag lock nut
WO2018155466A1 (en) * 2017-02-23 2018-08-30 株式会社アドバネクス Falling-off prevention tool
JPWO2018155466A1 (en) * 2017-02-23 2019-12-19 株式会社アドバネクス Fall prevention device
KR102108429B1 (en) * 2018-11-09 2020-05-11 주식회사 코어볼트 Anti-loosing nut equipped with locking pin and production method therof
WO2020162522A1 (en) * 2019-02-07 2020-08-13 株式会社アドバネクス Fall prevention tool
JP2020128761A (en) * 2019-02-07 2020-08-27 株式会社アドバネクス Falling preventive tool
CN113396291A (en) * 2019-02-07 2021-09-14 迈进有限公司 Anti-falling off piece
JP7154148B2 (en) 2019-02-07 2022-10-17 株式会社アドバネクス fall prevention tool
JP2022176300A (en) * 2019-02-07 2022-11-25 株式会社アドバネクス fall prevention tool
TWI812842B (en) * 2019-02-07 2023-08-21 日商邁進股份有限公司 Shedding preventer
US12000427B2 (en) 2019-02-07 2024-06-04 Advanex Inc. Fall prevention tool

Similar Documents

Publication Publication Date Title
JP2009052648A (en) Nut detent
JP5489038B2 (en) Nut with locking function
KR100701643B1 (en) Locking nut
JP5655208B2 (en) Seizure prevention bolt
JP5319302B2 (en) Fall-off prevention device
JP5770370B2 (en) Screw fastener with locking
JP5200190B2 (en) Fall-off prevention device
JP6723539B2 (en) Fall prevention tool
CN108071642B (en) Fastening member
JP2016156482A (en) Drop-off prevention tool
JP5852153B2 (en) Threaded connection and clamp especially for clamping
JP2013543962A (en) Detent screw
JP2011052767A (en) Rotation self-locking nut and manufacturing method therefor
JP4198724B2 (en) Screw locking structure
JP2008069966A (en) Method for setting screw protective element on accommodation screw, setting spindle for the said method and screw-thread protective element
JP2009209946A (en) Locking nut
JP2004316915A (en) Screw element with spring element formed
WO2020016885A1 (en) Nut stopper for loosening prevention
JP3848309B2 (en) Fall-off prevention device
CN104204561A (en) Locking threaded fastener
WO2016148266A1 (en) Nut
JP2011252593A (en) Slack preventing screw
KR20100097932A (en) Coupling unit using double screw
JP2007155105A (en) Lock nut and lock bolt
JP6512009B2 (en) Fastening device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100810

A131 Notification of reasons for refusal

Effective date: 20110726

Free format text: JAPANESE INTERMEDIATE CODE: A131

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110728

A02 Decision of refusal

Effective date: 20111129

Free format text: JAPANESE INTERMEDIATE CODE: A02