JPH0719230A - Locking method of bolt and nut - Google Patents
Locking method of bolt and nutInfo
- Publication number
- JPH0719230A JPH0719230A JP16288993A JP16288993A JPH0719230A JP H0719230 A JPH0719230 A JP H0719230A JP 16288993 A JP16288993 A JP 16288993A JP 16288993 A JP16288993 A JP 16288993A JP H0719230 A JPH0719230 A JP H0719230A
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- nut
- hole
- thread
- manufacturing process
- 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
Links
Landscapes
- Forging (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ボルト・ナットの弛み
止め方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt / nut locking method.
【０００２】[0002]
【従来の技術】従来から、ボルト・ナットの弛み止め方
法に関しては各種の提案がされており、枚挙にいとまが
ない程である。しかしながら、その内の多くは、ピン、
楔、止めねじ、止めナット、リング、座金などの別部品
を用いる方法であり、したがって部品点数の増加という
問題を伴う。別部品を必要としない方法としては、ナッ
トのねじ山とボルトのねじ山とを異なる形状に製造する
方法が挙げられるが、製造加工の工程が煩雑となるとい
う問題がある。2. Description of the Related Art Heretofore, various proposals have been made regarding bolt and nut loosening prevention methods, which are numerous. However, many of them are pins,
This method uses separate parts such as a wedge, a set screw, a set nut, a ring, and a washer, and therefore involves the problem of an increase in the number of parts. As a method that does not require a separate part, there is a method of manufacturing the thread of the nut and the thread of the bolt in different shapes, but there is a problem that the manufacturing process becomes complicated.
【０００３】そこで、別部品を用いることなく、かつ通
常の形状のねじ山を用いてボルト・ナットの弛み止めを
行う方法として、実公昭１０−１６５１２号が開示され
ている。この方法は、ナットに縦溝（ボルト軸方向と平
行な溝であって、ナットの内周部に設けられる）と横孔
（ボルト軸と直交する方向の孔）とを設け、ナットをボ
ルトと緊締した後、横孔から縦溝内へ膠着剤を圧入する
ことによって、弛み止めを行うものである。Therefore, Japanese Utility Model Publication No. 10-16512 has been disclosed as a method of preventing loosening of bolts and nuts by using a screw thread of a normal shape without using a separate part. In this method, the nut is provided with a vertical groove (a groove parallel to the bolt axial direction and provided on the inner peripheral portion of the nut) and a horizontal hole (a hole in a direction orthogonal to the bolt axis), and the nut is used as a bolt. After tightening, the glue is pressed into the flutes from the lateral holes to prevent loosening.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、この方
法においても、膠着剤が別に必要である。更にこの方法
を行うためには、その膠着剤の圧入器も必要となる。ま
た、ナットに縦溝と横孔との双方を設けねばならないの
で、ナットの製造工程が煩雑となる。即ち、部品点数の
増加及び製造工程の煩雑化という問題点は完全に解消さ
れていない。However, this method also requires a separate adhesive agent. Furthermore, in order to carry out this method, a press-in device for the glue is also required. Further, since the nut must be provided with both the vertical groove and the lateral hole, the manufacturing process of the nut becomes complicated. That is, the problems of increasing the number of parts and complicating the manufacturing process have not been completely solved.
【０００５】本発明の目的は、部品点数の増加や製造工
程の煩雑化を伴わず、簡便にボルト・ナットの弛み止め
を行うことのできるボルト・ナットの弛み止め方法を提
供することである。An object of the present invention is to provide a bolt / nut loosening prevention method which can easily prevent bolts / nuts from loosening without increasing the number of parts and complicating the manufacturing process.
【０００６】[0006]
【課題を解決するための手段】本発明においては、上述
の目的を達成するために、以下のような技術的手段を講
じた。即ち、本発明は、ボルトと、該ボルトの軸方向と
直交する方向に少なくとも１個の透孔が設けられたナッ
トとが螺合した状態において、前記透孔を介して打撃杆
の先端で前記ボルトのねじ山を打撃することによって、
ボルトのねじ山に塑性変形を起こし、ボルト・ナットの
弛み止めを行うことを特徴とする。In the present invention, in order to achieve the above object, the following technical means were taken. That is, according to the present invention, in a state in which a bolt and a nut having at least one through hole provided in a direction orthogonal to an axial direction of the bolt are screwed together, the tip of the striking rod is provided through the through hole. By striking the threads of the bolt,
The feature is that plastic deformation occurs in the thread of the bolt to prevent loosening of the bolt and nut.
【０００７】[0007]
【作用】本発明に従えば、ボルト・ナットの螺合状態に
おいて、ナットに設けられた少なくとも１個の透孔を介
して、打撃杆の先端がボルト軸のねじ山を打撃する。打
撃されたボルト軸のねじ山は、塑性変形を生じる。した
がって、ボルトとナットとは相互に螺回が困難となるの
で、弛みを生じることが防止される。According to the present invention, when the bolt and nut are screwed together, the tip of the striking rod strikes the thread of the bolt shaft through at least one through hole provided in the nut. The thread of the impacted bolt shaft causes plastic deformation. Therefore, it is difficult for the bolt and the nut to be screwed together, so that the slack is prevented.
【０００８】[0008]
【実施例】図１は本発明の一実施例であるナット１とボ
ルト２との螺合状態における断面図である。そのうちの
図１（Ａ）は弛み止めを施す前の状態を示し、図１
（Ｂ）は弛み止めを施した後の状態を示す。図２はナッ
ト１の斜視図である。ナット１とボルト２とは、金属材
料等から成る。ナット１はいわゆる六角ナットであっ
て、その外周部には６個の捻回面１ａ〜１ｆを有する。
このナット１の中心部には前記ボルト２が挿通するボル
ト挿通孔３が設けられ、このボルト挿通孔３の内周部に
は、めねじ４が形成される。前記捻回面１ａ〜１ｆのう
ちの対向する一対の捻回面１ａ，１ｄから前記ボルト挿
通孔３にかけて、ボルト２の軸方向と直交する方向に断
面円形状の透孔５ａ，５ｄがそれぞれ穿設される。1 is a sectional view of a nut 1 and a bolt 2 in a screwed state, which is an embodiment of the present invention. FIG. 1 (A) shows the state before the loosening prevention is applied.
(B) shows a state after the loosening prevention is applied. FIG. 2 is a perspective view of the nut 1. The nut 1 and the bolt 2 are made of a metal material or the like. The nut 1 is a so-called hexagonal nut, and has six twisted surfaces 1a to 1f on its outer peripheral portion.
A bolt insertion hole 3 through which the bolt 2 is inserted is provided at the center of the nut 1, and an internal thread 4 is formed on the inner peripheral portion of the bolt insertion hole 3. From the pair of twisting surfaces 1a, 1d facing each other of the twisting surfaces 1a to 1d to the bolt insertion hole 3, through holes 5a, 5d having a circular cross section are formed in a direction orthogonal to the axial direction of the bolt 2, respectively. Set up.
【０００９】前記ボルト２の軸６外周部には雄ねじのね
じ山７が形成されており、ボルト２がナット１に挿通さ
れた状態において、前記雌ねじ４と螺合する。以下、こ
の螺合状態において、弛み止めを施すための動作につい
て説明する。この弛み止め動作に用いられる打撃杆８
は、前記ボルト２よりも硬質の材料を用いて形成され、
透孔５ａ，５ｄよりもやや小径の円柱形である胴部８ａ
と、この胴部８ａよりも大径の頭部８ｂとを含む。図１
（Ａ）に示すように、作業者は前記胴部８ａを一方の手
で把持して胴部８ａの先端部８ｃを透孔５ａ（５ｄ）内
に挿通し、好ましくは先端部８ｃをボルト２のねじ山７
に軽く当接させた状態とする。この状態で、他方の手で
把持したハンマー等で前記頭部８ａに打撃を加える。ね
じ山７は先端部８ｃを介してこの打撃を受ける。（ただ
し、図中には透孔５ａを介して打撃する場合のみを示し
ている。）打撃を受けたねじ山７は、図１（Ｂ）に示す
ように、塑性変形を生じて、いわゆる「ねじ山が潰れ
た」状態となる。これにより、ボルト２とナット１とは
相互に螺回が困難となるので、弛みを生じることが防止
される。A screw thread 7 of a male screw is formed on the outer peripheral portion of the shaft 6 of the bolt 2, and the bolt 2 is engaged with the female screw 4 in a state where the bolt 2 is inserted into the nut 1. Hereinafter, the operation for applying the loosening prevention in this screwed state will be described. Striking rod 8 used for this loosening prevention operation
Is formed using a material harder than the bolt 2,
Body 8a, which is a cylinder having a diameter slightly smaller than the through holes 5a and 5d
And a head portion 8b having a diameter larger than that of the body portion 8a. Figure 1
As shown in (A), the operator grasps the body portion 8a with one hand and inserts the tip portion 8c of the body portion 8a into the through hole 5a (5d). Screw thread 7
Lightly contact the In this state, the head 8a is hit with a hammer or the like held by the other hand. The thread 7 is hit by the tip 8c. (However, in the figure, only the case of hitting through the through hole 5a is shown.) As shown in FIG. 1 (B), the screw thread 7 hit is plastically deformed, so-called "so-called". The thread is crushed. " As a result, it becomes difficult for the bolt 2 and the nut 1 to be screwed together, so that slack is prevented.
【００１０】本実施例に係る弛み止め方法を実施するに
際しては、ナット１とボルト２との他に必要なものは打
撃杆８だけであるので、複数のナット１・ボルト２に対
して各々止めねじ・リング等の別部品を用意する必要が
なく、部品点数が増加することがない。また、本発明方
法を実施するためのナット１とボルト２との製造加工に
関しては、ナット１に透孔５ａ，５ｄを穿設するだけで
良く、他にボルト２やナット１に特別な形状のねじ山な
どを形成する必要がないので、ナット１とボルト２との
製造工程が複雑になることがない。When carrying out the loosening prevention method according to the present embodiment, since only the striking rod 8 is required in addition to the nut 1 and the bolt 2, the nut 1 and the bolt 2 are respectively stopped. There is no need to prepare separate parts such as screws and rings, and the number of parts does not increase. Further, regarding the manufacturing process of the nut 1 and the bolt 2 for carrying out the method of the present invention, it suffices to form the through holes 5a and 5d in the nut 1, and in addition, the bolt 2 and the nut 1 have a special shape. Since it is not necessary to form threads and the like, the manufacturing process of the nut 1 and the bolt 2 does not become complicated.
【００１１】なお、本発明の弛み止め方法における各構
成は、上記の実施例に限定されず、適宜設計変更可能で
ある。例えば、袋ナット、蝶ナット、四角ナットなどの
他形状のナットにも同様に用いることができる。また、
例えば、ナット１に設けられる透孔は捻回面１ａ〜１ｆ
の内いずれか１面からボルト挿通孔３にかけて１個のみ
設けられてもよく、全捻回面１ａ〜１ｆからボルト挿通
孔３にかけて各１個ずつ、６個設けることも可能であ
る。また任意の３面、例えば捻回面１ａ，１ｃ，１ｅか
らボルト挿通孔３にかけて３個設けられてもよい。The structures of the loosening prevention method of the present invention are not limited to those in the above embodiment, and the design can be changed as appropriate. For example, it can be similarly used for nuts of other shapes such as a cap nut, a wing nut, and a square nut. Also,
For example, the through holes provided in the nut 1 are twisted surfaces 1a to 1f.
One may be provided from any one surface to the bolt insertion hole 3, and it is also possible to provide six pieces, one each from the entire twist surface 1a to 1f to the bolt insertion hole 3. In addition, three optional surfaces, for example, three from the twisted surfaces 1a, 1c, 1e to the bolt insertion hole 3 may be provided.
【００１２】また、打撃杆８も、前述の形状に限られな
いことは勿論であり、手近にある棒状体等を適宜使用で
きる。The striking rod 8 is not limited to the above-mentioned shape, and a rod-shaped member or the like at hand can be appropriately used.
【００１３】[0013]
【発明の効果】本発明によれば、ボルトのねじ山が打撃
によって塑性変形を生じるので、ボルトとナットとが弛
みを生じることが確実に防止される。さらに、本発明方
法を実施するに際しては、ボルト・ナットの他に必要な
ものは打撃杆だけであるので、各ボルト・ナットに対し
て止めねじ・リング等の別部品を用意する必要がなく、
部品点数が増加することがない。また、本発明方法を実
施するためのボルト・ナットの製造加工に関しては、ナ
ットに透孔を穿設するだけで良く、他にボルトやナット
に特別な形状のねじ山などを形成する必要がないので、
ボルト・ナットの製造工程が複雑になることがない。According to the present invention, since the thread of the bolt is plastically deformed by the impact, the slack of the bolt and the nut is reliably prevented. Furthermore, when carrying out the method of the present invention, since only the striking rod is necessary in addition to the bolts and nuts, it is not necessary to prepare separate parts such as setscrews and rings for each bolt and nut,
The number of parts does not increase. Further, regarding the manufacturing process of the bolt and nut for carrying out the method of the present invention, it suffices to form a through hole in the nut, and it is not necessary to form a screw thread having a special shape on the bolt or the nut. So
No complicated bolt and nut manufacturing process.
【００１４】したがって、低コスト・少労力で確実にボ
ルト・ナットの弛み防止が実現可能である。Therefore, it is possible to surely prevent the loosening of the bolts and nuts at low cost and with little labor.
【図１】本発明の一実施例であるナット１とボルト２と
の螺合状態における断面図であり、（Ａ）は弛み止めを
施す前の状態を示し、（Ｂ）は弛み止めを施した後の状
態を示す。FIG. 1 is a cross-sectional view showing a state in which a nut 1 and a bolt 2 are screwed together, which is one embodiment of the present invention. (A) shows a state before loosening prevention, and (B) shows loosening prevention. The state after the operation is shown.
【図２】ナット１の斜視図である。FIG. 2 is a perspective view of a nut 1.
１ ナット ２ ボルト ５ａ，５ｄ 透孔 ６ ボルト２の軸 ７ ねじ山 ８ 打撃杆 ８ｃ 打撃杆８の先端 1 Nut 2 Bolts 5a, 5d Through Hole 6 Shaft of Bolt 2 7 Thread 8 Strike Rod 8c Tip of Strike Rod 8
Claims (1)
方向に少なくとも１個の透孔が設けられたナットとが螺
合した状態において、前記透孔を介して打撃杆の先端で
前記ボルトのねじ山を打撃することによって、ボルトの
ねじ山に塑性変形を起こし、ナットの弛み止めを行うこ
とを特徴とするボルト・ナットの弛み止め方法。1. A bolt and a nut provided with at least one through hole in a direction orthogonal to the axial direction of the bolt are screwed together, and the bolt is attached to the end of the striking rod through the through hole. A method for preventing loosening of a nut / bolt, characterized in that the thread of the bolt is plastically deformed by hitting the thread of the bolt to prevent the nut from loosening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16288993A JPH0719230A (en) | 1993-06-30 | 1993-06-30 | Locking method of bolt and nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16288993A JPH0719230A (en) | 1993-06-30 | 1993-06-30 | Locking method of bolt and nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0719230A true JPH0719230A (en) | 1995-01-20 |
Family
ID=15763184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16288993A Pending JPH0719230A (en) | 1993-06-30 | 1993-06-30 | Locking method of bolt and nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0719230A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012533033A (en) * | 2009-07-08 | 2012-12-20 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Locking of actuator stem and rod end bearing device used with fluid valve |
| KR20130047573A (en) * | 2011-10-31 | 2013-05-08 | 히다치 오토모티브 시스템즈 가부시키가이샤 | Fastening method and cylinder device |
| WO2014046322A1 (en) * | 2012-09-24 | 2014-03-27 | 볼보 컨스트럭션 이큅먼트 에이비 | Caulking method for preventing piston of hydraulic/pneumatic cylinder from being loosened |
| JP2015048653A (en) * | 2013-09-02 | 2015-03-16 | ニチアス株式会社 | Supporting leg for floor, and setting method for the same |
| JP2015117712A (en) * | 2013-12-16 | 2015-06-25 | カヤバ工業株式会社 | Shock absorber and method of manufacturing shock absorber |
| JP2015117709A (en) * | 2013-12-16 | 2015-06-25 | カヤバ工業株式会社 | Shock absorber and method of manufacturing shock absorber |
-
1993
- 1993-06-30 JP JP16288993A patent/JPH0719230A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012533033A (en) * | 2009-07-08 | 2012-12-20 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Locking of actuator stem and rod end bearing device used with fluid valve |
| US9624965B2 (en) | 2009-07-08 | 2017-04-18 | Fisher Controls International Llc | Locking actuator stem and rod end bearing apparatus for use with fluid valves |
| US9062794B2 (en) | 2009-07-08 | 2015-06-23 | Fisher Controls International Llc | Locking actuator stem and rod end bearing apparatus for use with fluid valves |
| KR20130047573A (en) * | 2011-10-31 | 2013-05-08 | 히다치 오토모티브 시스템즈 가부시키가이샤 | Fastening method and cylinder device |
| JP2013117304A (en) * | 2011-10-31 | 2013-06-13 | Hitachi Automotive Systems Ltd | Fastening method and cylinder device |
| US9394934B2 (en) | 2011-10-31 | 2016-07-19 | Hitachi Automotive Systems, Ltd. | Fastening method and cylinder device |
| GB2520879A (en) * | 2012-09-24 | 2015-06-03 | Volvo Constr Equip Ab | Caulking method for preventing piston of hydraulic/pneumatic cylinder from being loosened |
| CN104641159A (en) * | 2012-09-24 | 2015-05-20 | 沃尔沃建造设备有限公司 | Caulking method for preventing piston of hydraulic/pneumatic cylinder from being loosened |
| US9522445B2 (en) | 2012-09-24 | 2016-12-20 | Volvo Construction Equipment Ab | Caulking method for preventing piston of hydraulic/pneumatic cylinder from being loosened |
| WO2014046322A1 (en) * | 2012-09-24 | 2014-03-27 | 볼보 컨스트럭션 이큅먼트 에이비 | Caulking method for preventing piston of hydraulic/pneumatic cylinder from being loosened |
| GB2520879B (en) * | 2012-09-24 | 2019-01-30 | Volvo Constr Equip Ab | Caulking method for preventing piston of hydraulic/pneumatic cylinder from being loosened |
| JP2015048653A (en) * | 2013-09-02 | 2015-03-16 | ニチアス株式会社 | Supporting leg for floor, and setting method for the same |
| JP2015117712A (en) * | 2013-12-16 | 2015-06-25 | カヤバ工業株式会社 | Shock absorber and method of manufacturing shock absorber |
| JP2015117709A (en) * | 2013-12-16 | 2015-06-25 | カヤバ工業株式会社 | Shock absorber and method of manufacturing shock absorber |
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