JP2010107029A

JP2010107029A - Lock screw

Info

Publication number: JP2010107029A
Application number: JP2008300090A
Authority: JP
Inventors: Hiroshi Miyaji; 啓宮地
Original assignee: TEGA SEIKO CO Ltd
Current assignee: TEGA SEIKO CO Ltd
Priority date: 2008-10-28
Filing date: 2008-10-28
Publication date: 2010-05-13

Abstract

<P>PROBLEM TO BE SOLVED: To surely lock the screw joining section of an eyeglass. <P>SOLUTION: A form of a notch (20) in a screw projected on the cross-section of a threaded shaft is nearly a triangle. The form produced by connecting three vertices (X, Y, Z) of the triangle using straight lines is approximately a rectangular scalene triangle (30). A vertex with one of right and obtuse angles of the rectangular scalene triangle is positioned at a ridge (40) of the thread on a returning side and a vertex with the other angle is positioned at a root (42) of the thread. Then, a vertex with the remaining acute angle is formed to be positioned at a ridge (41) of the thread on a driving side. Further, at least one or more cutouts formed in this way are formed at one rotary part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ねじ込んだ後、緩まない様にされた、緩み防止ネジに関する。特に、眼鏡のフレームと部品、又は部品同士の連結又は締結に使用される物に関する。 The present invention relates to a loosening prevention screw that is prevented from loosening after being screwed. In particular, the present invention relates to an object used for connecting or fastening eyeglass frames and parts or parts.

従来、眼鏡の部品として、丁番部やリムロックその他に使用されるネジに於いては、その寸法が小さい上、使用している内にだんだん緩んできてしまっていく事が多かった。そこで、その様な緩みを防止用のネジとして、色んなものが提案されてきている。そして、その中で、例えば特開平８−３０３４４４の様な緩み防止案が提案されている。 Conventionally, screws used for hinge parts, rim locks, and the like as spectacle parts are small in size and often loosen gradually during use. Accordingly, various screws have been proposed as screws for preventing such loosening. Among them, for example, a loosening prevention plan such as that disclosed in JP-A-8-303444 has been proposed.

特開平８−３０３４４４JP-A-8-303444

しかしながら、上記特開平８−３０３４４４の様に、ネジ山頂部に爪を形成すると、ネジ山頂部以上に爪が突出し、その部分が弱くなる為ネジに焼入れを行わなければ、爪が直ぐに折れてしまい、用を成さなくなってしまった。特に眼鏡の丁番部に於いては、何万回と開閉を繰り返す事によりその爪の部分の耐久性は無く、致命的な事故に繋がってしまう事となる。 However, if the claw is formed at the top of the screw thread as in the above-mentioned JP-A-8-303444, the claw protrudes beyond the top of the screw thread, and the part becomes weak. I'm no longer using it. In particular, in the hinge part of the glasses, by repeating the opening and closing tens of thousands of times, there is no durability of the nail part, leading to a fatal accident.

そこで本発明に於いては、先ず、ネジの切欠き部のネジ軸横断面への投影形状が、略三角形で、その頂点三点を直線で結んだ形状がほぼ直角不等辺三角形であり、その直角不等辺三角形の直角又は鈍角のどちらか一つの頂点が戻り側ネジ山頂部に、他方は谷底部にある様にされ、そして、残りの鋭角部の頂点が押し込み側山頂部にある様に形成され、そして、その様にして形成された前記切欠き部を少なくとも一箇所以上、一回転部に有する様に形成する事により上記課題の解決を図った。 Therefore, in the present invention, first, the projected shape of the notch of the screw onto the screw shaft cross section is a substantially triangular shape, and the shape formed by connecting the three vertices with a straight line is a substantially right-angled triangle. Either right angle or obtuse angle of right-angled unequal triangle is formed so that the top of the return thread is at the top, the other is at the bottom of the valley, and the rest of the acute angle is at the top of the indentation And the above-mentioned subject was solved by forming so that the notch part formed in that way had at least one or more places in one rotation part.

次に、前記山頂部切欠き部近辺の戻り側頂部が、そのネジ本来の角度よりも上下どちらかに僅かに曲げるように形成し更なる効果を図った。Next, the return side apex in the vicinity of the peak notch is formed so as to be slightly bent up or down from the original angle of the screw for further effect.

そして、更に、前記切欠き部が連続して上下に少なくとも二箇所以上設けられた部分が少なくとも一箇所以上有するに形成した。 Further, the cutout portion is formed so as to have at least one or more portions that are continuously provided at least two locations in the vertical direction.

本発明により、ネジの締め付けの際には、スムーズに回転し進入し、締め付け後は緩み防止効果がしっかり効いて、丁番の回転試験に於いても、充分な摩擦力により緩み止め効果が得られた。 According to the present invention, when the screw is tightened, it smoothly rotates and enters, and after tightening, the effect of preventing looseness is effective, and even in the rotation test of the hinge, the effect of preventing loosening is obtained with sufficient frictional force. It was.

以下図による実施例により本発明の最良の形態を説明するが、本発明は以下の実施例図や説明文により限定されるものではなく、特許請求の範囲により限定されるべきものである。 The best mode of the present invention will be described below with reference to the drawings. However, the present invention should not be limited by the following drawings or descriptions but should be limited by the claims.

図１は説明用のネジの正面図で、図２及び３は、そのＡ−Ａ断面図であり、図４及び５は図２，３の要部拡大図である。図２，３の様に、ネジ１０の切欠き部２０のネジ軸横断面への投影形状が略三角形又は略弓形で、その頂点Ｘ、Ｙ、Ｚ、の三点を直線で結んだ形状が、図４、５の様にほぼ直角不等辺三角形３０，３１、である様に加工する。 1 is a front view of an explanatory screw, FIGS. 2 and 3 are AA cross-sectional views thereof, and FIGS. 4 and 5 are enlarged views of main portions of FIGS. As shown in FIGS. 2 and 3, the projected shape of the notch 20 of the screw 10 on the cross section of the screw shaft is a substantially triangular shape or a substantially arcuate shape, and a shape obtained by connecting three points of the vertices X, Y, and Z with a straight line. As shown in FIGS. 4 and 5, processing is performed so as to be substantially right-angled inequilateral triangles 30 and 31.

そして図４は、直角不等辺三角形３０の鈍角部の頂点Ｚを戻り側ネジ山頂部４０に、直角部Ｘを谷底部４２にある様にし、そして残りの鋭角部の頂点Ｙが押し込み側ネジ山頂部４１にあるように形成した状態を表している。 And FIG. 4 shows that the obtuse angle apex Z of the right-angled unequal triangle 30 is at the return screw top 40, the right angle X is at the valley bottom 42, and the remaining acute angle apex Y is the indentation screw top. The state formed so that it may exist in the part 41 is represented.

又、図３とその要部拡大図の図５の様に、直角不等辺三角形３１の直角部の頂点Ｚ２を戻り側ネジ山頂部４０ａ上に、鈍角部の頂点Ｘ２を谷底部４２ａにある様にし、そして、残りの鋭角部頂点Ｙ２を押し込み側ネジ山頂部４１ａ上に置く様に加工しても良い。Further, as shown in FIG. 3 and FIG. 5 of an enlarged view of the main part, the vertex Z2 of the right angle portion of the right-angled unequal triangle 31 is on the return-side thread crest 40a and the vertex X2 of the obtuse angle portion is on the valley bottom 42a. Then, the remaining acute angle portion vertex Y2 may be processed so as to be placed on the pushing-side screw thread top portion 41a.

そうする事により、矢印Ｔ１〜Ｔ４の方に押し込む場合、戻り側ネジ山頂部４０，４０ａは邪魔にはならず、又、押し込み側ネジ山頂部４１，４１ａも勿論、比較的緩やかな鈍角になっているので、締め付け・押し込みの邪魔にはならない。 By doing so, when pushing in the directions of the arrows T1 to T4, the return-side thread crests 40 and 40a do not get in the way, and the push-side thread crests 41 and 41a of course have a relatively gentle obtuse angle. Therefore, it does not interfere with tightening / pushing.

しかし、ネジが緩み戻ろうとする場合は、戻り側ネジ山頂部４０，４０ａ，の角度は９０度に等しいか小さいので、先端部がナット側溝（図示無し）に喰い込み、緩む事がない。そして、押し込み側ネジ山頂部４１，４１ａも直線で切ったような切欠き部を形成してあるので、多少エッジが立って、戻り防止に一役果たす事となる。 However, when the screw is about to loosen back, the angle of the return-side thread crests 40, 40a is equal to or smaller than 90 degrees, so that the tip does not bite into the nut-side groove (not shown) and does not loosen. The push-side screw thread crests 41 and 41a are also formed with notches that are cut in a straight line, so that the edges are slightly raised and play a role in preventing return.

図６，７は本発明の緩み防止ネジを作る場合の説明図であり、先ず図６の様に、ネジ基材にプレスにより略三角形の切欠き部２１を形成し、それから転造ダイスでネジ山・溝を形成しても良く、又、転造ダイスでネジ山・溝を形成した後、ダイスで図７の様に、切削、プレス等で前記略三角形部分を削り取っても良い。 FIGS. 6 and 7 are explanatory diagrams for making the loosening prevention screw of the present invention. First, as shown in FIG. 6, a substantially triangular notch 21 is formed on the screw base by pressing, and then the screw is formed with a rolling die. Crests / grooves may be formed, or after forming threads / grooves with a rolling die, the substantially triangular portion may be cut with a die as shown in FIG. 7 by cutting, pressing, or the like.

又、図８の様に切欠き部が一箇所２０でも良く、図９の様に上下に二箇所２０ａ以上連続して設けられても良く、又完全ネジ部のみならず不完全ネジ部に設けても良い。 Moreover, the notch part may be one place 20 as shown in FIG. 8, or two or more places 20a may be continuously provided up and down as shown in FIG. 9, and it is provided not only on the complete thread part but also on the incomplete thread part. May be.

そして次に、図１０の様に、山頂部切欠き部近辺の戻り側ネジ山頂部４０Ｃが、そのネジ本来の角度よりも上下４０ｄ，４０ｅの様にどちらかに僅かに曲げられた状態に形成されても良く、こうする事により更に緩み防止効果が倍増した。 Then, as shown in FIG. 10, the return-side thread crest 40C in the vicinity of the crest notch is formed in a state where it is slightly bent to either the top or bottom 40d, 40e from the original angle of the screw. This may double the effect of preventing loosening.

そして、図１１は本発明のネジを眼鏡に使用する場合の眼鏡の斜視図であり、丁番部５０，５１がもっとも緩み易い箇所であるが、しっかり緩み防止効果があった。又、他にもリムロック部分、パッド部分（図示無し）等にも使用する事が可能である。 FIG. 11 is a perspective view of eyeglasses when the screw of the present invention is used for eyeglasses. The hinge portions 50 and 51 are the parts that are most likely to loosen, but have a solid loosening prevention effect. In addition, it can be used for a rim lock portion, a pad portion (not shown), and the like.

又、他の分野のネジにも使用出来、その応用範囲は広い。 It can also be used for screws in other fields, and its application range is wide.

説明用のネジ正面図Screw front view for explanation 図１のＡ−Ａ断面図AA sectional view of FIG. 図１のＡ−Ａ断面図AA sectional view of FIG. 図２の要部拡大図2 is an enlarged view of the main part of FIG. 図３の要部拡大図3 is an enlarged view of the main part of FIG. 本発明の加工説明図Processing explanatory diagram of the present invention 本発明の加工説明図Processing explanatory diagram of the present invention 本発明のネジ正面図Screw front view of the present invention 本発明のネジ正面図Screw front view of the present invention 本発明の他の実施例のネジ模式要部拡大図Screw main part enlarged view of another embodiment of the present invention 本発明のネジを装着した眼鏡斜視図Glasses perspective view equipped with the screw of the present invention

Explanation of symbols

１０ネジ
２０切欠き部
３０．３１直角不等辺三角形
４０戻り側ネジ山頂部
４１押し込み側ネジ山頂部
５０，５１丁番部
Ｘ、Ｙ、Ｚ三角形頂点
Ｇ加工具（機）
Ｔねじ込み方向10 Screw 20 Notch 30.31 Right-angle unequal triangle 40 Return screw top 41 Push-side screw top 50, 51 Hinge part X, Y, Z Triangle vertex G Processing tool (machine)
T Screwing direction

Claims

The projected shape of the screw notch on the cross section of the screw shaft is approximately a triangle, and the shape formed by connecting the three vertices with a straight line is a substantially right-angled unequal triangle. One apex is at the return thread crest, the other is at the bottom of the trough, and the remaining acute apex is at the indentation crest, and so formed. The loosening prevention screw is characterized in that it is formed so as to have at least one notch part in one rotating part.

2. The loosening prevention screw according to claim 1, wherein a return side top portion in the vicinity of the notch portion of the mountain top portion is slightly bent upward or downward from an original angle of the screw.

3. The loosening prevention screw according to claim 1, wherein at least one portion where the notch portion is continuously provided at least two locations in the vertical direction has at least one portion.