JP2017190793A - Dropout prevention tool - Google Patents

Dropout prevention tool Download PDF

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JP2017190793A
JP2017190793A JP2016078842A JP2016078842A JP2017190793A JP 2017190793 A JP2017190793 A JP 2017190793A JP 2016078842 A JP2016078842 A JP 2016078842A JP 2016078842 A JP2016078842 A JP 2016078842A JP 2017190793 A JP2017190793 A JP 2017190793A
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coil spring
main body
spring portion
coil
region
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JP2016078842A
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JP6723539B2 (en
Inventor
佳文 永田
Yoshifumi Nagata
佳文 永田
和也 蒲
Kazuya Kaba
和也 蒲
慶介 橋爪
Keisuke Hashizume
慶介 橋爪
佐々木　晴夫
Haruo Sasaki
晴夫 佐々木
麻起 大和矢
Maki Owaya
麻起 大和矢
真一郎 平田
Shinichiro Hirata
真一郎 平田
康之 藤澤
Yasuyuki Fujisawa
康之 藤澤
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TOKYO KOKI CO Ltd
Taisei Corp
Metropolitan Expressway Co Ltd
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TOKYO KOKI CO Ltd
Taisei Corp
Metropolitan Expressway Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a dropout prevention tool capable of stably exhibiting a looseness prevention performance.SOLUTION: A dropout prevention tool 1 comprises: a coil spring body 2; and a hexagon body 3. The coil spring body 2 includes: a first coil spring part 2A; an end region 21; and a second coil spring part 2B. On the body 3, open holes penetrating between one edge face and the other edge face opposite each other are formed. The hexagon body 3 includes projections 5 protruding from six sides of the body 3 toward the open holes. On one edge face of the body 3, a dent part 5A extending toward the inside surface of the body 3 is formed; and the projections 5 are connected to the dent part 5A. An aperture 6 penetrating between a part of inside surface and the outside surface of the body 3 is formed. The end region 21 is inserted into the aperture 6.SELECTED DRAWING: Figure 1

Description

本発明は脱落防止具に関する。詳しくは、ボルトからナットや被固定物が脱落することを防止する脱落防止具に係るものである。   The present invention relates to a drop-off prevention device. Specifically, the present invention relates to a drop-off prevention tool that prevents a nut or a fixed object from falling off the bolt.

部品と部品を締め付け固定するために、溶接よりも手間がかからず、かつ、短時間で施工が可能な、ボルトとナットによる締結方法が用いられている。   In order to fasten and fix parts to each other, a fastening method using bolts and nuts that is less time-consuming than welding and that can be performed in a short time is used.

しかし、ボルトとナットによる締結方法では、ボルトやナットが振動等を受けることにより、締結後にボルトやナットが緩むことがあるため、ボルトやナットが緩んでボルトからナットや被固定物が脱落しないようにする発明が幾つか提案されている。   However, with the fastening method using bolts and nuts, the bolts and nuts may loosen after fastening due to vibrations, etc., so that the bolts and nuts will not loosen and the nuts and objects to be fixed will not fall out of the bolts. Several inventions have been proposed.

例えば特許文献１には、図８に示すような脱落防止具が記載されている。すなわち、特許文献１に記載の脱落防止具１０１は、筒状本体１０２と、この筒状本体１０２内に挿入されたコイルバネ部１０３とを備える。   For example, Patent Document 1 describes a drop-off prevention tool as shown in FIG. That is, the drop-off prevention device 101 described in Patent Document 1 includes a cylindrical main body 102 and a coil spring portion 103 inserted into the cylindrical main body 102.

また、コイルバネ部１０３は、ボルトの脚部の外径よりもわずかに小さい径で巻回されて形成されている。
また、筒状本体１０２は、コイルバネ部１０３を筒状本体１０２に挿入した場合にコイルバネ部１０３の外径と筒状本体１０２の内径との間に隙間が形成され、筒状本体１０２内でコイルバネ部１０３が拡径できる構成とされている。 The coil spring portion 103 is formed by being wound with a diameter slightly smaller than the outer diameter of the bolt leg portion.
In addition, when the coil spring portion 103 is inserted into the cylindrical main body 102, the cylindrical main body 102 has a gap formed between the outer diameter of the coil spring portion 103 and the inner diameter of the cylindrical main body 102. It is set as the structure which the part 103 can expand in diameter.

また、コイルバネ部１０３の上端１０４は、筒状本体１０２の上部に穿孔された固着用孔１０６に差し込まれて固着されている。
また、コイルバネ部１０３の下端１０５は、筒状本体１０２の下部に形成された開口部１０７内に係留されている。 Further, the upper end 104 of the coil spring portion 103 is inserted and fixed in a fixing hole 106 drilled in the upper portion of the cylindrical main body 102.
Further, the lower end 105 of the coil spring portion 103 is anchored in an opening 107 formed in the lower portion of the cylindrical main body 102.

また、筒状本体１０２の外周壁面の上下方向に突起部１０８が形成されている。   In addition, protrusions 108 are formed in the vertical direction of the outer peripheral wall surface of the cylindrical main body 102.

国際公開第２００５／１２１５７０号International Publication No. 2005/121570

しかしながら、特許文献１に記載の脱落防止具は、ボルトをコイルバネ部に挿入するときに、コイルバネ部が一定の位置でボルトを誘い込み難く、緩み止め性能を安定的に発揮し難かった。   However, the drop-off prevention device described in Patent Document 1 has a difficulty in attracting the bolt at a certain position when the bolt is inserted into the coil spring portion, and it is difficult to stably exhibit the locking performance.

本発明は、以上の点に鑑みて創案されたものであり、緩み止め性能を安定的に発揮できる脱落防止具を提供することを目的とする。   The present invention has been made in view of the above points, and an object of the present invention is to provide a drop-off prevention device that can stably exhibit the locking performance.

上記の目的を達成するために、本発明の脱落防止具は、巻回されたコイル素線で構成された第１のコイルバネ部と、該第１のコイルバネ部のコイル素線の一端から延びたコイル素線の領域であり、かつ、同第１のコイルバネ部の外側に配置された端部領域と、前記第１のコイルバネ部を構成するコイル素線の他端から延びたコイル素線が、同第１のコイルバネ部と略同心状にかつ半円以上の大きさの円弧状に巻回された領域である円弧状領域および同第１のコイルバネ部と略同心状にかつ多角形状に少なくとも１周巻回された領域である多角形状領域を含み、かつ、同第１のコイルバネ部の巻回径よりも大きい巻回径を含む第２のコイルバネ部とを有するコイルバネ体と、外形が多角形であり、かつ、互いに対向する一方の端面と他方の端面との間を貫通した貫通孔の内部に、前記コイルバネ体が同貫通孔と同軸上に収容されており、かつ、前記貫通孔に向けて多角形の各辺から突出した突出部を有し、かつ、前記コイルバネ体の前記端部領域を挿入可能な凹部が内側面に形成された、または前記コイルバネ体の前記端部領域を挿入可能であり、かつ、内側面と外側面との間を貫通する開口部が形成された本体とを備える。   In order to achieve the above object, a drop prevention device of the present invention extends from a first coil spring portion formed of a wound coil wire and one end of the coil wire of the first coil spring portion. An area of the coil wire, and an end region disposed outside the first coil spring portion, and a coil wire extending from the other end of the coil wire constituting the first coil spring portion, At least one arc-shaped region that is substantially concentric with the first coil spring portion and wound in an arc shape having a size of a semicircle or more, and at least one that is substantially concentric with the first coil spring portion and polygonal. A coil spring body having a second coil spring portion including a polygonal region that is a circumferentially wound region and having a winding diameter larger than the winding diameter of the first coil spring portion; And one end face and the other end face facing each other The coil spring body is accommodated coaxially with the through-hole, and has a protruding portion protruding from each side of the polygon toward the through-hole. A recess into which the end region of the coil spring body can be inserted is formed on the inner surface, or the end region of the coil spring body can be inserted, and penetrates between the inner surface and the outer surface. And a main body in which an opening is formed.

ここで、貫通孔に向けて多角形の各辺から突出した突出部によって、本発明の脱落防止具をボルトに装着するとき、すなわちボルトをコイルバネ体に挿入するときに、コイルバネ体と突出部とが接触してコイルバネ体がずれることを抑制し、コイルバネ体がボルトのリードに沿って一定の位置でボルトを誘い込むことができる。   Here, when the drop-off prevention device of the present invention is attached to the bolt by the protruding portion protruding from each side of the polygon toward the through hole, that is, when the bolt is inserted into the coil spring body, the coil spring body and the protruding portion Is prevented from slipping and the coil spring body is displaced, and the coil spring body can draw the bolt at a fixed position along the lead of the bolt.

また、貫通孔に向けて多角形の各辺から突出した突出部によって、本発明の脱落防止具をボルトに装着する前すなわちボルトをコイルバネ体に挿入する前に、コイルバネ体が本体から脱落することを抑制できる。   In addition, the protrusions protruding from the sides of the polygon toward the through hole allow the coil spring body to drop from the main body before mounting the drop prevention device of the present invention on the bolt, that is, before inserting the bolt into the coil spring body. Can be suppressed.

また、本発明の脱落防止具において、本体の一方の端面に、本体の内側面まで延びる窪み部が形成されており、突出部は、窪み部に連接したものとすることができる。   Further, in the dropout prevention device of the present invention, a recess portion extending to the inner side surface of the main body is formed on one end surface of the main body, and the protruding portion can be connected to the recess portion.

この場合、本体の一方の端面に対して略直交する方向に、窪み部に工具を挿入し、かつ、突出部に工具を押し当てて、本発明の脱落防止具を回転させることができる。   In this case, the drop prevention tool of the present invention can be rotated by inserting the tool into the recessed portion and pressing the tool against the protruding portion in a direction substantially orthogonal to the one end surface of the main body.

また、本発明の脱落防止具において、突出部は、本体の一方の端面よりも、貫通孔が延びる方向においてコイルバネ体に近い位置に配置されたものとすることができる。   Further, in the dropout prevention device of the present invention, the protruding portion may be disposed at a position closer to the coil spring body in the direction in which the through hole extends than the one end face of the main body.

この場合、突出部がコイルバネ体に近くなるので、コイルバネ体がずれることを抑制し易い。   In this case, since the protrusion is close to the coil spring body, it is easy to suppress the coil spring body from shifting.

また、多角形状領域は、第１のコイルバネ部を構成するコイル素線の他端から延びたコイル素線が、第１のコイルバネ部と略同心状にかつ六角形状に少なくとも１周巻回された領域であり、本体の外形は六角形であるものとすることができる。   In the polygonal region, the coil wire extending from the other end of the coil wire constituting the first coil spring portion is wound at least once around the first coil spring portion and in a hexagonal shape. The outer shape of the body may be a hexagon.

この場合、多角形状領域の形状に突出部の位置が対応しているので、ボルトをコイルバネ体に挿入する前に、コイルバネ体が本体から脱落することをより一層抑制できる。   In this case, since the position of the protrusion corresponds to the shape of the polygonal region, it is possible to further suppress the coil spring body from falling off the main body before inserting the bolt into the coil spring body.

本発明に係る脱落防止具は、緩み止め性能を安定的に発揮できる。   The drop-off prevention device according to the present invention can stably exhibit the locking performance.

本発明を適用した脱落防止具の一例を示す概略分解図である。It is a general | schematic exploded view which shows an example of the drop-off prevention tool to which this invention is applied. 本発明を適用した脱落防止具のコイルバネ体の概略正面図である。It is a schematic front view of the coil spring body of the drop-off prevention device to which the present invention is applied. 本発明を適用した脱落防止具のコイルバネ体の概略平面図である。It is a schematic plan view of the coil spring body of the drop-off prevention device to which the present invention is applied. 図１のＡ−Ａ線に概略断面図である。It is a schematic sectional drawing in the AA of FIG. 図１に示したコイルバネ体を本体に収容した状態の本発明を適用した脱落防止具の一例を示す概略図である。It is the schematic which shows an example of the fall-off prevention tool to which this invention of the state which accommodated the coil spring body shown in FIG. 1 in the main body is applied. ボルトに装着された本発明を適用した脱落防止具の一例を示す概略図である。It is the schematic which shows an example of the fall-off prevention tool to which this invention with which the volt | bolt was mounted | worn was applied. 図５Ａに示された本発明を適用した脱落防止具の概略平面図である。FIG. 5B is a schematic plan view of a drop-off prevention device to which the present invention shown in FIG. 5A is applied. ボルトに装着された本発明を適用した脱落防止具を緩めるときの様子の一例を示す概略図である。It is the schematic which shows an example when a loosening prevention tool to which this invention with which this volt | bolt was mounted was applied is loosened. 図６Ａに示された本発明を適用した脱落防止具の概略平面図である。FIG. 6B is a schematic plan view of a drop-off prevention device to which the present invention shown in FIG. 6A is applied. 本発明を適用した脱落防止具のコイルバネ体を構成する先端領域の一例を示す概略図である。It is the schematic which shows an example of the front-end | tip area | region which comprises the coil spring body of the fall-off prevention tool to which this invention is applied. 従来の脱落防止具を示す概略図である。It is the schematic which shows the conventional drop-off prevention tool.

以下、本発明の実施の形態について図面を参照しながら説明し、本発明の理解に供する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings to facilitate understanding of the present invention.

図１は、本発明を適用した脱落防止具の一例を示す概略分解図である。また、図２Ａは、本発明を適用した脱落防止具のコイルバネ体の概略正面図である。また、図２Ｂは、本発明を適用した脱落防止具のコイルバネ体の概略平面図である。   FIG. 1 is a schematic exploded view showing an example of a drop-off prevention device to which the present invention is applied. FIG. 2A is a schematic front view of a coil spring body of a drop-off prevention device to which the present invention is applied. FIG. 2B is a schematic plan view of the coil spring body of the drop-off prevention device to which the present invention is applied.

また、図３は、図１のＡ−Ａ線に概略断面図である。また、図４は、図１に示したコイルバネ体を本体に収容した状態の本発明を適用した脱落防止具の一例を示す概略図である。   FIG. 3 is a schematic sectional view taken along line AA in FIG. FIG. 4 is a schematic view showing an example of a drop-off prevention device to which the present invention is applied in a state where the coil spring body shown in FIG. 1 is housed in the main body.

図１に示す本発明の脱落防止具１は、コイルバネ体２と、本体３とを備える。   A drop prevention tool 1 of the present invention shown in FIG. 1 includes a coil spring body 2 and a main body 3.

ここで、コイルバネ体２は、第１のコイルバネ部２Ａと、端部領域２１と、第２のコイルバネ部２Ｂとを有する。   Here, the coil spring body 2 includes a first coil spring portion 2A, an end region 21, and a second coil spring portion 2B.

また、第１のコイルバネ部２Ａは、所定の径で巻回されたコイル素線で構成されている。
ここで、第１のコイルバネ部２Ａの内径は、ボルトの脚部の外径よりもわずかに小さい。 The first coil spring portion 2A is composed of a coil wire wound with a predetermined diameter.
Here, the inner diameter of the first coil spring part 2A is slightly smaller than the outer diameter of the leg part of the bolt.

また、端部領域２１は、第１のコイルバネ部２Ａのコイル素線の一端から延びたコイル素線の領域であり、かつ、第１のコイルバネ部２Ａの外側に配置されている。   Further, the end region 21 is a region of the coil wire extending from one end of the coil wire of the first coil spring portion 2A, and is disposed outside the first coil spring portion 2A.

また、第２のコイルバネ部２Ｂは、第１のコイルバネ部２Ａを構成するコイル素線の他端から延びたコイル素線で構成されている。
また、第２のコイルバネ部２Ｂを構成するコイル素線は、第１のコイルバネ部２Ａの巻回径よりも大きい巻回径で巻回されている。 The second coil spring portion 2B is composed of a coil wire extending from the other end of the coil wire constituting the first coil spring portion 2A.
Further, the coil wire constituting the second coil spring portion 2B is wound with a winding diameter larger than the winding diameter of the first coil spring portion 2A.

すなわち、第２のコイルバネ部２Ｂは、第１のコイルバネ部２Ａを構成するコイル素線の他端から延びたコイル素線が、第１のコイルバネ部２Ａと略同心状に、かつ、半円の大きさの円弧状に巻回された領域である円弧状領域２２を含む。   That is, the second coil spring portion 2B is configured such that the coil strand extending from the other end of the coil strand constituting the first coil spring portion 2A is substantially concentric with the first coil spring portion 2A and is semicircular. An arcuate region 22 that is an area wound in an arcuate shape is included.

また、第２のコイルバネ部２Ｂは、第１のコイルバネ部２Ａを構成するコイル素線の他端から延びたコイル素線が、第１のコイルバネ部２Ａと略同心状に、かつ、六角形状に少なくとも１周巻回された領域である多角形状領域２３を含む。
従って、多角形状領域２３には少なくとも６箇所の角部２３Ａが存在する。 Further, the second coil spring portion 2B has a coil wire extending from the other end of the coil wire constituting the first coil spring portion 2A substantially concentrically with the first coil spring portion 2A and in a hexagonal shape. The polygonal area | region 23 which is an area | region wound at least 1 round is included.
Accordingly, the polygonal region 23 has at least six corners 23A.

また、円弧状領域２２は、第１のコイルバネ部２Ａを構成するコイル素線の他端に連接している。すなわち、円弧状領域２２を構成するコイル素線は、第１のコイルバネ部２Ａを構成するコイル素線の他端から延びている。   The arcuate region 22 is connected to the other end of the coil wire constituting the first coil spring portion 2A. That is, the coil wire constituting the arcuate region 22 extends from the other end of the coil wire constituting the first coil spring portion 2A.

また、多角形状領域２３は、円弧状領域２２に隣接している。すなわち、多角形状領域２３を構成するコイル素線は、円弧状領域２２を構成するコイル素線の終端から延びている。   Further, the polygonal region 23 is adjacent to the arcuate region 22. That is, the coil wire constituting the polygonal region 23 extends from the terminal end of the coil wire constituting the arcuate region 22.

また、本発明の脱落防止具１の本体３には、互いに対向する一方の端面と他方の端面との間を貫通する貫通孔４が形成されている。   In addition, the body 3 of the dropout prevention device 1 of the present invention is formed with a through hole 4 penetrating between one end face and the other end face facing each other.

また、本体３の外形は六角形である。すなわち、貫通孔４の中心軸線と直交する方向における本体３の断面形状は六角形状である。
また、本体の外形は必ずしも六角形でなくてもよいことは勿論である。例えば、本体の外形は五角形や八角形でもよい。 Moreover, the external shape of the main body 3 is a hexagon. That is, the cross-sectional shape of the main body 3 in the direction orthogonal to the central axis of the through hole 4 is a hexagonal shape.
Of course, the outer shape of the main body is not necessarily hexagonal. For example, the outer shape of the main body may be a pentagon or an octagon.

また、六角形の本体３は、本体３の６つの辺それぞれから、貫通孔４に向けて突出した突出部５を有する。   In addition, the hexagonal main body 3 has projecting portions 5 that project toward the through holes 4 from the six sides of the main body 3.

また、本体３の一方の端面には、本体３の内側面まで延びる窪み部５Ａが形成されている。
また、突出部５は、窪み部５Ａに連接している。 A recess 5 </ b> A that extends to the inner surface of the main body 3 is formed on one end surface of the main body 3.
Moreover, the protrusion part 5 is connected with the hollow part 5A.

なお、本体３の各辺から１つの突出部５が突出しているが、必ずしも各辺から１つの突出部が突出していなくてもよく、各辺から２つ以上の突出部が突出していてもよい。   In addition, although one protrusion 5 protrudes from each side of the main body 3, one protrusion does not necessarily protrude from each side, and two or more protrusions may protrude from each side. .

また、突出部５は、本体３の一方の端面よりも、貫通孔４が延びる方向すなわち貫通孔４の中心軸線が延びる方向において、コイルバネ体２に近い位置に配置されている。   Further, the protruding portion 5 is disposed at a position closer to the coil spring body 2 in the direction in which the through hole 4 extends, that is, the direction in which the central axis of the through hole 4 extends than the one end surface of the main body 3.

また、突出部５を有する本体３を備える本発明の脱落防止具１は、例えば次のようにして製造される。   Moreover, the drop-off preventing device 1 of the present invention including the main body 3 having the protruding portion 5 is manufactured as follows, for example.

コイルバネ体２を、貫通孔４が形成された、外形が六角形の本体３の貫通孔４の内部に、貫通孔４と同軸上に収容する。
なお、このときの本体には、本体の６つの辺それぞれから突出した突出部や窪み部は形成されていない。 The coil spring body 2 is accommodated coaxially with the through hole 4 in the through hole 4 of the main body 3 having a hexagonal outer shape in which the through hole 4 is formed.
In addition, the protrusion part and the hollow part which protruded from each of six sides of a main body are not formed in the main body at this time.

次に、本体３の一方の端面に対して略直交する方向に、この一方の端面へ熱を加えながら加圧できる器具を押し当てて加圧し、この一方の端面を塑性変形させる。
このとき、本体３の一方の端面と本体３の内側面に、一緒に熱を加えながら加圧する。 Next, in one direction substantially orthogonal to the one end surface of the main body 3, a device capable of applying pressure is pressed against the one end surface while applying heat, and the one end surface is plastically deformed.
At this time, pressure is applied to one end surface of the main body 3 and the inner side surface of the main body 3 while applying heat together.

その結果、六角形の本体３の６つの辺それぞれに、本体３の内側面まで延びる１つの窪み部５Ａと、窪み部５Ａに連接した、かつ、貫通孔４に向けて突出した突出部５を形成する。   As a result, on each of the six sides of the hexagonal main body 3, there is a recess 5A extending to the inner surface of the main body 3, and a protrusion 5 connected to the recess 5A and protruding toward the through hole 4. Form.

また、図３に示すように、本体３の貫通孔４は、内径が互いに異なる３つの空間に分けられている。
すなわち、一方の端面から上段差部３Ａと略同一平面までの空間である上部空間４Ａと、上段差部３Ａと略同一平面から下段差部３Ｂと略同一平面までの空間である中部空間４Ｂと、下段差部３Ｂと略同一平面から本体３の他方の端面までの空間である下部空間４Ｃである。 Moreover, as shown in FIG. 3, the through-hole 4 of the main body 3 is divided into three spaces having different inner diameters.
That is, an upper space 4A that is a space from one end face to substantially the same plane as the upper step portion 3A, and a middle space 4B that is a space from substantially the same plane as the upper step portion 3A to substantially the same plane as the lower step portion 3B. A lower space 4C that is a space from substantially the same plane as the lower step portion 3B to the other end surface of the main body 3.

また、上部空間４Ａの内径が一番大きく、中部空間４Ｂの内径が二番目に大きく、下部空間４Ｃの内径が一番小さい。
すなわち、上段差部３Ａの分だけ中部空間４Ｂの内径は上部空間４Ａの内径より小さい。また、下段差部３Ｂの分だけ下部空間４Ｃの内径は中部空間４Ｂの内径より小さい。 Further, the inner diameter of the upper space 4A is the largest, the inner diameter of the middle space 4B is the second largest, and the inner diameter of the lower space 4C is the smallest.
That is, the inner space 4B has an inner diameter smaller than the inner diameter of the upper space 4A by the upper step portion 3A. Further, the inner diameter of the lower space 4C is smaller than the inner diameter of the middle space 4B by the amount of the lower step portion 3B.

また、上部空間４Ａを形成する本体３の内側面には、六角形の本体３の突き出た部分に相当する位置に隅部７が形成されている。
また、本体３の各辺すなわち隅部７と隅部７との間に突出部５が設けられている。 Further, a corner 7 is formed on the inner surface of the main body 3 forming the upper space 4A at a position corresponding to the protruding portion of the hexagonal main body 3.
Further, a protruding portion 5 is provided between each side of the main body 3, that is, between the corner portion 7 and the corner portion 7.

また、中部空間４Ｂを形成する本体３の内側面の一部と外側面との間を貫通する開口部６が形成されている。   Moreover, the opening part 6 which penetrates between a part of inner surface of the main body 3 which forms the middle part space 4B, and an outer surface is formed.

また、下部空間４Ｃを形成する本体３の内側面にはネジ溝とネジ山が形成されている。すなわち、本体３はネジ部８を有する。   Further, thread grooves and threads are formed on the inner surface of the main body 3 forming the lower space 4C. That is, the main body 3 has a screw portion 8.

また、コイルバネ体２を、本体３の貫通孔４の内部に貫通孔４と同軸上に収容した状態では、第２のコイルバネ部２Ｂは貫通孔４の上部空間４Ａ内に位置する。   Further, when the coil spring body 2 is accommodated coaxially with the through hole 4 in the through hole 4 of the main body 3, the second coil spring portion 2 </ b> B is located in the upper space 4 </ b> A of the through hole 4.

また、突出部５は、貫通孔４が延びる方向においてコイルバネ体２よりも本体３の一方の端面に近い位置に配置されている。   Further, the protruding portion 5 is disposed at a position closer to one end surface of the main body 3 than the coil spring body 2 in the direction in which the through hole 4 extends.

また、隅部７は、貫通孔４の内部に貫通孔４と同軸上に収容されたコイルバネ体２の第２のコイルバネ部２Ｂの多角形状領域２３の角部２３Ａに対応するものである。   The corner portion 7 corresponds to the corner portion 23 </ b> A of the polygonal region 23 of the second coil spring portion 2 </ b> B of the coil spring body 2 accommodated coaxially with the through hole 4 inside the through hole 4.

また、コイルバネ体２を、本体３の貫通孔４の内部に貫通孔４と同軸上に収容した状態では、第１のコイルバネ部２Ａは貫通孔４の中部空間４Ｂ内に位置する。   Further, when the coil spring body 2 is accommodated coaxially with the through hole 4 inside the through hole 4 of the main body 3, the first coil spring part 2 </ b> A is located in the middle space 4 </ b> B of the through hole 4.

従って、コイルバネ体２を、本体３の貫通孔４の内部に貫通孔４と同軸上に収容した状態では、端部領域２１は第１のコイルバネ部２Ａの外側に配置されているので、端部領域２１は開口部６に挿入される。   Therefore, when the coil spring body 2 is accommodated coaxially with the through hole 4 in the through hole 4 of the main body 3, the end region 21 is disposed outside the first coil spring portion 2A. The region 21 is inserted into the opening 6.

また、第１のコイルバネ部２Ａの巻回径と、下部空間４Ｃの内径すなわちネジ部８の内径は略同じである。
また、第１のコイルバネ部２Ａは、下部空間４Ｃ内には位置しない。 Further, the winding diameter of the first coil spring portion 2A and the inner diameter of the lower space 4C, that is, the inner diameter of the screw portion 8 are substantially the same.
The first coil spring portion 2A is not located in the lower space 4C.

また、第１のコイルバネ部２Ａと第２のコイルバネ部２Ｂは互いに略同心状に形成されており、しかも、コイルバネ体２は、本体３の貫通孔４の内部に貫通孔４と同軸上に収容されている。   The first coil spring portion 2A and the second coil spring portion 2B are formed substantially concentrically with each other, and the coil spring body 2 is accommodated coaxially with the through hole 4 inside the through hole 4 of the main body 3. Has been.

従って、本体３のネジ部８を通ったボルトの脚部は、第１のコイルバネ部２Ａに到達し、そして、第１のコイルバネ部２Ａのコイル素線がボルトの脚部に形成されたネジ溝と係合する。   Accordingly, the leg portion of the bolt that has passed through the screw portion 8 of the main body 3 reaches the first coil spring portion 2A, and the screw groove in which the coil wire of the first coil spring portion 2A is formed in the leg portion of the bolt. Engage with.

なお、コイルバネ体２は本体３に固着されていない。
なぜなら、六角形の本体３の６つの辺それぞれから貫通孔４に向けて突出した突出部５が、貫通孔４が延びる方向においてコイルバネ体２よりも本体３の一方の端面に近い位置に配置されているので、コイルバネ体２と突出部５とが接触して、コイルバネ体２が本体３に固着されていなくても、コイルバネ体２は本体３から容易に離脱しないからである。 The coil spring body 2 is not fixed to the main body 3.
This is because the protrusions 5 protruding from the six sides of the hexagonal main body 3 toward the through hole 4 are arranged at positions closer to one end surface of the main body 3 than the coil spring body 2 in the direction in which the through hole 4 extends. Therefore, even if the coil spring body 2 and the protrusion 5 are in contact with each other and the coil spring body 2 is not fixed to the main body 3, the coil spring body 2 is not easily detached from the main body 3.

図５Ａは、ボルトに装着された本発明を適用した脱落防止具の一例を示す概略図である。また、図５Ｂは、図５Ａに示された本発明を適用した脱落防止具の概略平面図である。
また、図６Ａは、ボルトに装着された本発明を適用した脱落防止具を緩めるときの様子の一例を示す概略図である。また、図６Ｂは、図６Ａに示された本発明を適用した脱落防止具の概略平面図である。 FIG. 5A is a schematic diagram showing an example of a drop-off prevention device to which the present invention is attached to a bolt. FIG. 5B is a schematic plan view of a dropout prevention tool to which the present invention shown in FIG. 5A is applied.
FIG. 6A is a schematic view showing an example of a state in which the drop-off prevention tool to which the present invention is attached to a bolt is loosened. FIG. 6B is a schematic plan view of the drop-off prevention device to which the present invention shown in FIG. 6A is applied.

図５Ａに示すように、被固定物９を固定するために本発明の脱落防止具１を、締め付ける方向１２である右方向へ回転させて、ボルト１０の脚部１１に装着させる。   As shown in FIG. 5A, in order to fix the fixed object 9, the drop-off prevention tool 1 of the present invention is rotated to the right, which is the tightening direction 12, and is attached to the leg portion 11 of the bolt 10.

また、本発明の脱落防止具１をボルト１０の脚部１１から離脱させる場合は、図６Ａに示すように、本発明の脱落防止具１を、緩める方向１３である左方向へ回転させる。   Moreover, when removing the fall prevention tool 1 of the present invention from the leg portion 11 of the bolt 10, as shown in FIG. 6A, the fall prevention tool 1 of the present invention is rotated in the left direction which is the loosening direction 13.

また、図５Ｂに示すように、多角形状領域２３の角部２３Ａは、本発明の脱落防止具１を締め付ける方向１２へ回転させたとき、本体３の内側面に形成された隅部７と対応する位置にある。   Further, as shown in FIG. 5B, the corner 23A of the polygonal region 23 corresponds to the corner 7 formed on the inner surface of the main body 3 when it is rotated in the direction 12 for tightening the dropout prevention device 1 of the present invention. It is in the position to do.

一方、図６Ｂに示すように、多角形状領域２３の角部２３Ａは、本発明の脱落防止具１を緩める方向１３である左方向へ回転させたとき、本体３の内側面に形成された隅部７と対応する位置から移動する。
そして、角部２３が本体３の内側面に当接する。 On the other hand, as shown in FIG. 6B, the corner 23A of the polygonal region 23 is a corner formed on the inner surface of the main body 3 when it is rotated to the left, which is the direction 13 for loosening the dropout prevention device 1 of the present invention. It moves from the position corresponding to the part 7.
And the corner | angular part 23 contact | abuts to the inner surface of the main body 3. FIG.

すなわち、本発明の脱落防止具１を緩める方向１３へ回転させると、コイルバネ体２は縮径する。
このとき、第１のコイルバネ部２Ａのコイル素線がボルト１０の脚部１１に形成されたネジ溝に押し付けられる。 That is, when the drop prevention tool 1 of the present invention is rotated in the loosening direction 13, the coil spring body 2 is reduced in diameter.
At this time, the coil wire of the first coil spring portion 2 </ b> A is pressed against the screw groove formed in the leg portion 11 of the bolt 10.

一方、コイルバネ体２は縮径するので、第１のコイルバネ部２Ａのコイル素線の一端から延びたコイル素線の領域である端部領域２１は、開口部６の縁へ向けて移動し、開口部６の縁に当たる。   On the other hand, since the coil spring body 2 is reduced in diameter, the end region 21 which is a region of the coil wire extending from one end of the coil wire of the first coil spring portion 2A moves toward the edge of the opening 6 and It hits the edge of the opening 6.

そして、さらに本発明の脱落防止具１を緩める方向１３へ回転させ続けると、開口部６の縁が端部領域２１を拡径方向へ押す。   And if it continues to rotate further in the direction 13 which loosens the drop-off prevention tool 1 of this invention, the edge of the opening part 6 will push the edge part area | region 21 to a diameter-expanding direction.

また、このとき、第２のコイルバネ部２Ｂの多角形状領域２３の角部２３Ａが本体３の内側面に当接する。
従って、コイルバネ体２全体が回らなくなるので、コイルバネ体２は拡径した状態が維持され、本発明の脱落防止具１を緩める方向１３へ回転させ続けることができる。 At this time, the corner portion 23 </ b> A of the polygonal region 23 of the second coil spring portion 2 </ b> B contacts the inner surface of the main body 3.
Accordingly, since the entire coil spring body 2 does not rotate, the coil spring body 2 is maintained in an expanded state, and can continue to rotate in the direction 13 for loosening the dropout prevention device 1 of the present invention.

なお、本発明の脱落防止具１を緩める方向１３へ回転させ続けなければ、すなわち、本発明の脱落防止具１に対して緩める方向１３へ所定の力を加え続けなければ、本発明の脱落防止具１は緩まないため、振動が本発明の脱落防止具１に加えられても、被固定物の緩み抑制の点で支障はない。   In addition, if it does not continue to rotate to the direction 13 which loosens the fall prevention tool 1 of this invention, ie, unless predetermined force is not continuously applied to the direction 13 to loosen with respect to the fall prevention tool 1 of this invention, the fall prevention of this invention Since the tool 1 does not loosen, even if vibration is applied to the dropout prevention tool 1 of the present invention, there is no problem in terms of suppressing loosening of the object to be fixed.

また、本体の一方の端面に、必ずしも本体の内側面まで延びる窪み部が形成されていなくてもよく、また、突出部は必ずしも窪み部に連接していなくてもよい。   Moreover, the recessed part extended to the inner surface of a main body does not necessarily need to be formed in one end surface of a main body, and the protrusion part does not necessarily need to be connected with the recessed part.

しかし、このような窪み部が形成されており、突出部が窪み部に連接していれば、本体の一方の端面に対して略直交する方向に、窪み部に工具を挿入し、かつ、突出部に工具を押し当てて、本発明の脱落防止具を回転させることができるので好ましい。   However, if such a depression is formed and the protrusion is connected to the depression, a tool is inserted into the depression in a direction substantially perpendicular to one end surface of the main body, and the protrusion It is preferable because a tool is pressed against the part to rotate the drop-off prevention tool of the present invention.

また、突出部は、必ずしも本体の一方の端面よりも、貫通孔が延びる方向において、コイルバネ体に近い位置に配置されていなくてもよい。
しかし、突出部が、本体の一方の端面よりも、貫通孔が延びる方向において、コイルバネ体に近い位置に配置されていれば、突出部がコイルバネ体に近くなるので、コイルバネ体がずれることを抑制し易くなり、好ましい。 Moreover, the protrusion part does not necessarily need to be arrange | positioned in the position close | similar to a coil spring body in the direction where a through-hole extends rather than one end surface of a main body.
However, if the protrusion is arranged at a position closer to the coil spring body in the direction in which the through-hole extends than the one end surface of the main body, the protrusion is close to the coil spring body, so that the coil spring body is prevented from shifting. It becomes easy to do and is preferable.

また、多角形状領域は、必ずしも第１のコイルバネ部を構成するコイル素線の他端から延びたコイル素線が、第１のコイルバネ部と略同心状に、かつ、六角形状に少なくとも１周巻回されていなくてもよい。
また、本体の外形は必ずしも六角形でなくてもよい。 In the polygonal region, the coil wire extending from the other end of the coil wire constituting the first coil spring portion is not substantially concentric with the first coil spring portion and is wound at least once in a hexagonal shape. It does not have to be turned.
Further, the outer shape of the main body is not necessarily hexagonal.

しかし、多角形状領域が、このようにコイル素線が、第１のコイルバネ部と略同心状に、かつ、六角形状に少なくとも１周巻回された領域であり、本体の外形も六角形であれば、多角形状領域の形状に突出部の位置が対応しているので、ボルトをコイルバネ体に挿入する前に、コイルバネ体が本体から脱落することをより一層抑制でき、好ましい。   However, the polygonal region is a region in which the coil wire is thus substantially concentric with the first coil spring portion and wound in a hexagonal shape at least once, and the outer shape of the main body is also a hexagonal shape. For example, since the position of the protrusion corresponds to the shape of the polygonal region, the coil spring body can be further prevented from falling off from the main body before the bolt is inserted into the coil spring body, which is preferable.

図７は、本発明を適用した脱落防止具のコイルバネ体を構成する先端領域の一例を示す概略図である。   FIG. 7 is a schematic view showing an example of the tip region constituting the coil spring body of the drop-off prevention device to which the present invention is applied.

図７に示す例では、コイルバネ体２は、端部領域のコイル素線の先端から、端部領域と略直交する方向に延びた先端領域２１Ａを有している。
すなわち、図７に示す例では、図示されていないネジ部が設けられた側へ向けて、先端領域２１Ａが延びており、図７で言うと下側へ向けて先端領域２１Ａが延びている。 In the example shown in FIG. 7, the coil spring body 2 has a tip region 21 </ b> A that extends from the tip of the coil wire in the end region in a direction substantially orthogonal to the end region.
That is, in the example shown in FIG. 7, the tip region 21A extends toward the side where a screw portion (not shown) is provided, and in FIG. 7, the tip region 21A extends downward.

コイルバネ体２が、このような先端領域２１Ａを有することで、先端領域２１Ａが本体３に係り易くなり、コイルバネ体２が本体３から離脱し難くなる。   Since the coil spring body 2 has such a tip region 21 </ b> A, the tip region 21 </ b> A is easily engaged with the main body 3, and the coil spring body 2 is difficult to be detached from the main body 3.

以上のように、本発明の脱落防止具は、貫通孔に向けて多角形の各辺から突出した突出部を有しているので、本発明の脱落防止具をボルトに装着するとき、すなわちボルトをコイルバネ体に挿入するときに、コイルバネ体と突出部とが接触してコイルバネ体がずれることを抑制し、コイルバネ体がボルトのリードに沿って一定の位置でボルトを誘い込むことができる。   As described above, the dropout prevention device of the present invention has the protruding portions that protrude from the respective sides of the polygon toward the through-hole, so that when the dropout prevention device of the present invention is attached to the bolt, that is, the bolt When the coil spring body is inserted into the coil spring body, the coil spring body and the projecting portion are prevented from coming into contact with each other and the coil spring body is prevented from shifting, and the coil spring body can draw the bolt at a certain position along the lead of the bolt.

従って、本発明の脱落防止具は、緩み止め性能を安定的に発揮できる。   Therefore, the drop-off prevention device of the present invention can stably exhibit the locking performance.

また、本発明の脱落防止具は、貫通孔に向けて多角形の各辺から突出した突出部を有しているので、本発明の脱落防止具をボルトに装着する前すなわちボルトをコイルバネ体に挿入する前に、コイルバネ体が本体から脱落することを抑制できる。   In addition, since the dropout prevention device of the present invention has protrusions that protrude from the sides of the polygon toward the through hole, the bolt is used as a coil spring body before the dropout prevention device of the present invention is attached to the bolt. Before inserting, it can suppress that a coil spring body falls out of a main body.

１ 脱落防止具
２ コイルバネ体
２Ａ 第１のコイルバネ部
２Ｂ 第２のコイルバネ部
３ 本体
４ 貫通孔
５ 突出部
５Ａ 窪み部
６ 開口部
７ 隅部
８ ネジ部
９ 被固定物
１０ ボルト
１１ 脚部
１２ 締め付ける方向
１３ 緩める方向
２１ 端部領域
２１Ａ 先端領域
２２ 円弧状領域
２３ 多角形状領域
２３Ａ 角部 DESCRIPTION OF SYMBOLS 1 Drop prevention tool 2 Coil spring body 2A 1st coil spring part 2B 2nd coil spring part 3 Main body 4 Through-hole 5 Protrusion part 5A Depression part 6 Opening part 7 Corner part 8 Screw part 9 Fastened object 10 Bolt 11 Leg part 12 Tighten Direction 13 Loosening direction 21 End region 21A Tip region 22 Arc region 23 Polygon region 23A Corner

Claims (4)

巻回されたコイル素線で構成された第１のコイルバネ部と、該第１のコイルバネ部のコイル素線の一端から延びたコイル素線の領域であり、かつ、同第１のコイルバネ部の外側に配置された端部領域と、前記第１のコイルバネ部を構成するコイル素線の他端から延びたコイル素線が、同第１のコイルバネ部と略同心状にかつ半円以上の大きさの円弧状に巻回された領域である円弧状領域および同第１のコイルバネ部と略同心状にかつ多角形状に少なくとも１周巻回された領域である多角形状領域を含み、かつ、同第１のコイルバネ部の巻回径よりも大きい巻回径を含む第２のコイルバネ部とを有するコイルバネ体と、
外形が多角形であり、かつ、互いに対向する一方の端面と他方の端面との間を貫通した貫通孔の内部に、前記コイルバネ体が同貫通孔と同軸上に収容されており、かつ、前記貫通孔に向けて多角形の各辺から突出した突出部を有し、かつ、前記コイルバネ体の前記端部領域を挿入可能な凹部が内側面に形成された、または前記コイルバネ体の前記端部領域を挿入可能であり、かつ、内側面と外側面との間を貫通する開口部が形成された本体とを備える
脱落防止具。 A first coil spring portion composed of a wound coil wire, a region of the coil wire extending from one end of the coil wire of the first coil spring portion, and the first coil spring portion The outer end region and the coil wire extending from the other end of the coil wire constituting the first coil spring portion are substantially concentric with the first coil spring portion and larger than a semicircle. An arcuate area that is an arcuately wound area and a polygonal area that is substantially concentric with the first coil spring portion and is an area wound at least once in a polygonal shape, and A coil spring body having a second coil spring portion including a winding diameter larger than the winding diameter of the first coil spring portion;
The outer shape is polygonal, and the coil spring body is accommodated coaxially with the through-hole inside the through-hole penetrating between one end face and the other end face facing each other, and A recess having a protrusion protruding from each side of the polygon toward the through-hole and into which the end region of the coil spring body can be inserted is formed on the inner surface, or the end portion of the coil spring body A dropout prevention device comprising: a main body in which an area can be inserted and an opening is formed penetrating between an inner surface and an outer surface. 前記本体の一方の端面に、同本体の内側面まで延びる窪み部が形成されており、
前記突出部は、前記窪み部に連接した
請求項１に記載の脱落防止具。 On one end surface of the main body, a recess is formed that extends to the inner surface of the main body.
The dropout prevention tool according to claim 1, wherein the protrusion is connected to the recess. 前記突出部は、前記本体の一方の端面よりも、前記貫通孔が延びる方向において前記コイルバネ体に近い位置に配置された
請求項１または請求項２に記載の脱落防止具。 The dropout prevention tool according to claim 1 or 2, wherein the protruding portion is disposed closer to the coil spring body in a direction in which the through hole extends than to one end face of the main body. 前記多角形状領域は、前記第１のコイルバネ部を構成するコイル素線の他端から延びたコイル素線が、前記第１のコイルバネ部と略同心状に、かつ、六角形状に少なくとも１周巻回された領域であり、
前記本体の外形は六角形である
請求項１、請求項２または請求項３に記載の脱落防止具。 In the polygonal region, the coil wire extending from the other end of the coil wire constituting the first coil spring portion is substantially concentric with the first coil spring portion and is wound at least once in a hexagonal shape. Turned area,
The dropout prevention tool according to claim 1, 2 or 3, wherein the outer shape of the main body is a hexagon.
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Publication number Priority date Publication date Assignee Title
KR101986509B1 (en) * 2018-09-13 2019-06-10 주식회사 한국자동화기술 Nuts with anti-loosening washers
JP2019112812A (en) * 2017-12-22 2019-07-11 首都高速道路株式会社 Guard rail fastener and guard rail connection structure
WO2019190116A1 (en) * 2018-03-27 2019-10-03 주식회사 케이에스엘엔씨 Anti-loosening nut
KR102283353B1 (en) * 2021-03-23 2021-07-29 주식회사 상신기술 Lock nut
KR102285186B1 (en) * 2021-04-01 2021-08-03 오춘식 Bolt for preventing loose
KR102301433B1 (en) * 2020-08-16 2021-09-23 (주)평우로지스 An anti-loosening nut

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JP2016061385A (en) * 2014-09-18 2016-04-25 首都高速道路株式会社 Fixture

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JP2015224771A (en) * 2014-05-29 2015-12-14 株式会社東京衡機 Dropout prevention tool
JP2016061385A (en) * 2014-09-18 2016-04-25 首都高速道路株式会社 Fixture

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019112812A (en) * 2017-12-22 2019-07-11 首都高速道路株式会社 Guard rail fastener and guard rail connection structure
WO2019190116A1 (en) * 2018-03-27 2019-10-03 주식회사 케이에스엘엔씨 Anti-loosening nut
KR20190113170A (en) * 2018-03-27 2019-10-08 주식회사 케이에스엘엔씨 A Locknut
KR102048264B1 (en) * 2018-03-27 2019-11-25 (주)케이에스엘엔씨 A Locknut
KR101986509B1 (en) * 2018-09-13 2019-06-10 주식회사 한국자동화기술 Nuts with anti-loosening washers
KR102301433B1 (en) * 2020-08-16 2021-09-23 (주)평우로지스 An anti-loosening nut
KR102283353B1 (en) * 2021-03-23 2021-07-29 주식회사 상신기술 Lock nut
KR102285186B1 (en) * 2021-04-01 2021-08-03 오춘식 Bolt for preventing loose

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