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JP3168087U - Nut loosening prevention mechanism - Google Patents

Nut loosening prevention mechanism Download PDF

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Publication number
JP3168087U
JP3168087U JP2011001602U JP2011001602U JP3168087U JP 3168087 U JP3168087 U JP 3168087U JP 2011001602 U JP2011001602 U JP 2011001602U JP 2011001602 U JP2011001602 U JP 2011001602U JP 3168087 U JP3168087 U JP 3168087U
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Prior art keywords
nut
screw
nuts
pressing portion
male screw
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耕三 柴尾
耕三 柴尾
柴尾 幸弘
幸弘 柴尾
基文 今北
基文 今北
勝弘 土屋
勝弘 土屋
真生 中村
真生 中村
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Riken Kogyo Inc
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Riken Kogyo Inc
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Abstract

【課題】ナットの緩み防止のための手段を提供する。【解決手段】右ネジと左ネジを刻設したクロス雄ネジを設け、右ネジを刻設した右ネジナット4と左ネジを刻設した左ネジナット7を設けて、クロス雄ネジに双方のナットを重ねて締め込む場合において、一方のナット下面に設けた傾斜押圧部9と他方のナット上面に設けた垂直押圧部6とが相互に押圧接触することにより、ナットの相互固定をすることにてクロス雄ネジに対する各ナットの緩みを防止するよう組み合わせ構成したことを特徴とする。【選択図】図7A means for preventing loosening of a nut is provided. A cross male screw engraved with right and left screws is provided, a right screw nut 4 engraved with a right screw and a left screw nut 7 engraved with a left screw are provided, and both nuts are attached to the cross male screw. In the case of overlapping tightening, the inclined pressing portion 9 provided on the lower surface of one nut and the vertical pressing portion 6 provided on the upper surface of the other nut are brought into pressure contact with each other, thereby fixing the nuts to each other. It is characterized by being combined to prevent loosening of each nut with respect to the male screw. [Selection] Figure 7

Description

この考案は、ナットの緩みを防止するための機構に関する。  This invention relates to a mechanism for preventing a nut from loosening.

従来より、ナットの緩みを防止するための種々の手段が利用されているが、本案にて示すように、互いに逆ネジとなるナットを用いるとともに、ナット相互間に傾斜の異なるテーパ面を設け、このテーパ面の押圧接触にて緩みを防止する手段は見あたらない。
なお、本案に対する先行技術文献として、下記特許文献1に、テーパ面を有する上ナットと下ナットを相互に締め付ける手段が表現されているが、テーパ面の傾斜は双方とも同一であり、本案に示すような線状押圧手段を有さず、本案とは異なっている。
Conventionally, various means for preventing loosening of nuts have been used, but as shown in the present plan, nuts that are reverse screws are used, and tapered surfaces with different inclinations are provided between the nuts, There is no means to prevent looseness by the pressing contact of the tapered surface.
In addition, as a prior art document with respect to the present plan, the following Patent Document 1 describes means for mutually tightening an upper nut and a lower nut having a tapered surface, but both the inclinations of the tapered surface are the same, and are shown in the present plan. There is no linear pressing means like this, which is different from the present plan.

特許第4495849号公報Japanese Patent No. 4495849

ナットは物品固定用部品として多方面に用いられている。ナットを締め込んだ後のナット緩みを防ぐために種々の手段があり、スプリングワッシャやダブルナットなどが一般的で多用されている。ナットの緩む原因としては、接触部凹凸の平坦化、座面部の塑性変形、軸直角方向繰り返し外力による緩みなどいくつもの要因がある。これらの原因による緩み防止のために上述のような手段があり、とりわけダブルナット方式が多用されている。
これは、一つの雄ねじに対して2個のナットを用い、互いのナット間の押圧摩擦にて緩みを防止するものであるが、振動の多い場所ではこのダブルナットにても緩みの完全防止は得られず、根本的な解決手段が見あたらないのが現状である。
本案は、以上のような従来からのナット緩み防止手段に関わる課題を解決するために考案されたもので、シンプルな構成にて上述の目的を達することのできる新規かつ有用なる手段を提供することを目的としたものである。
Nuts are used in many fields as parts fixing parts. There are various means for preventing loosening of the nut after the nut is tightened, and spring washers, double nuts, etc. are commonly used. As a cause of loosening of the nut, there are a number of factors such as flattening of the unevenness of the contact portion, plastic deformation of the bearing surface portion, and loosening due to repeated external force in the direction perpendicular to the axis. In order to prevent loosening due to these causes, there are means as described above, and the double nut method is particularly frequently used.
This is to use two nuts for one male screw and prevent loosening by pressing friction between the nuts, but in a place where there is a lot of vibration, this double nut can also prevent complete loosening. The current situation is that no fundamental solution is found.
The present proposal was devised to solve the problems associated with the conventional nut loosening prevention means as described above, and provides a new and useful means that can achieve the above-mentioned object with a simple configuration. It is aimed at.

課題を解決する手段として本案は以下の構成とした。
すなわち、右ネジと左ネジを刻設したクロス雄ネジを設け、右ネジを刻設した右ネジナットと左ネジを刻設した左ネジナットを設けて、クロス雄ネジに双方のナットを重ねて締め込む場合において、一方のナットに設けた傾斜押圧部と他方のナットに設けた垂直押圧部とが相互に押圧接触することにより、ナットの相互固定をすることにてクロス雄ネジに対する各ナットの緩みを防止するよう組み合わせ構成する。本考案は以上の構成よりなるナットの緩み防止機構である。
As a means for solving the problems, the present plan has the following configuration.
In other words, a cross male screw engraved with a right screw and a left screw is provided, a right screw nut engraved with a right screw and a left screw nut engraved with a left screw are provided, and both nuts are overlapped on the cross male screw and tightened. In this case, the slant pressing part provided on one nut and the vertical pressing part provided on the other nut are in press contact with each other, so that the nuts are fixed to each other, thereby loosening each nut with respect to the cross male screw. Combine and configure to prevent. The present invention is a nut loosening prevention mechanism configured as described above.

本案によれば、右ネジと左ネジを刻設したクロス雄ネジに対し、右ネジを刻設した右ネジナットと左ネジを刻設した左ネジナットを上下に重ねて締め込む場合において、傾斜面の傾斜押圧部に垂直押圧部が強固に線状押圧接触するので、ナットは相互に一体的関係となって、クロス雄ネジに対する各ナットの回転移動を防止して、各ナットの緩みを防止することのできる有用なる手段を得ることができる。  According to this proposal, when the right screw nut with the right screw and the left screw nut with the left screw are overlapped and tightened on the cross male screw with the right and left screws, Since the vertical pressing part is firmly linearly in contact with the inclined pressing part, the nuts are in an integral relationship with each other, preventing rotational movement of each nut relative to the cross male screw, and preventing loosening of each nut. The useful means which can be obtained can be obtained.

以下、本考案の実施形態について説明する。
図において、1はクロス雄ネジである。このクロス雄ネジは、右ネジ2による雄ネジ部分に左ネジ3を刻設したものである。4は右ネジナットで、その中央に右雌ネジを刻設した略六角柱体である。この右ネジナットの外周近傍上面は一段上がった平面としての環状段部5が形成され、そこから直角に立ち上がる円柱状の垂直押圧部6が形成される。環状段部外径はナット幅と同一である。
7は左ネジナットで、その中央に左雌ネジを刻設した略六角柱体である。この左ネジナット下面の外周近傍には環状凸部8が形成される。該環状凸部の内面は下方に向かうにつれて内径が緩やかに大となる傾斜面を有する傾斜押圧部9が形成され、該傾斜押圧部下端内径は、前記の垂直押圧部外径よりわずかに大きく形成される。以上のクロス雄ネジ、右ネジナット、左ネジナットの組み合わせが本案の第1実施例である。
本案使用に際しては、まずクロス雄ネジに右ネジナットを螺合させて締め込む。次に左ネジナットをクロス雄ネジに螺合させ、右ネジナットに当接させる。この当接時においては、図に示すように垂直押圧部上端は環状凸部の内側に位置して傾斜押圧部面に接触している。このまま左ネジナットを締め込むと、この当接している垂直押圧部分は変形しつつ傾斜押圧部内部に入り込み、強い線状押圧を受けて、左ネジナットは回転不能となる。
この状態において、右ネジナットと左ネジナットは強固な押圧状態にて一体化的となり、従って、この一体化的となっている一組のナットは左右いずれかの方向に回転しようとしても、いずれかのナットにそれが阻止されてナットの緩みが防止される。
本案にては、相互のナット間に線状押圧によるきわめて少ない面積に強い圧力が加わるので、単位面積あたりの押圧力は強大となるため、各ナット相互の相対移動防止に高い効果を上げることができる。
Hereinafter, embodiments of the present invention will be described.
In the figure, reference numeral 1 denotes a cross male screw. This cross male screw is formed by engraving a left screw 3 in a male screw portion by a right screw 2. Reference numeral 4 denotes a right-hand threaded nut, which is a substantially hexagonal column body having a right female thread carved in the center. The upper surface in the vicinity of the outer periphery of the right-hand screw nut is formed with an annular step portion 5 as a flat surface, and a columnar vertical pressing portion 6 rising at a right angle therefrom is formed. The outer diameter of the annular step is the same as the nut width.
Reference numeral 7 denotes a left-handed screw nut, which is a substantially hexagonal column having a left female screw engraved in the center thereof. An annular convex portion 8 is formed in the vicinity of the outer periphery of the lower surface of the left screw nut. The inner surface of the annular convex portion is formed with an inclined pressing portion 9 having an inclined surface whose inner diameter gradually increases as it goes downward, and the lower end inner diameter of the inclined pressing portion is slightly larger than the outer diameter of the vertical pressing portion. Is done. The combination of the above cross male screw, right screw nut, and left screw nut is the first embodiment of the present proposal.
When using this plan, first screw the right screw nut into the cross male screw and tighten it. Next, the left screw nut is screwed into the cross male screw and brought into contact with the right screw nut. At the time of this contact, as shown in the drawing, the upper end of the vertical pressing portion is located inside the annular convex portion and is in contact with the inclined pressing portion surface. When the left screw nut is tightened as it is, the abutting vertical pressing portion is deformed and enters the inclined pressing portion and receives a strong linear pressing, and the left screw nut becomes non-rotatable.
In this state, the right screw nut and the left screw nut are integrated in a strong pressing state, and therefore, this one set of nuts is rotated either in the left or right direction. The nut prevents it from being loosened.
In this proposal, since a strong pressure is applied to an extremely small area due to linear pressing between the mutual nuts, the pressing force per unit area becomes strong, so that it is highly effective in preventing the relative movement between the nuts. it can.

図8〜図9は、前例と逆に上方の左ネジナットに垂直押圧部、下方の右ネジナットに傾斜押圧部を設けた例であり、効果は同様である。図10〜図11は下方の右ネジナットに環状凸部を設けた例であって、これも同様の効果を発揮することができる。
以上、本案について記したが、本案は右ネジナットと左ネジナットを上下に重ねてクロス雄ネジに螺合させ、線状押圧とするところにその特徴を有し、強固な緩み止め効果を有するものである。従来は、クロス雄ネジを用いない手段が利用されており、根本的な解決は難しかったが、本案にてこれが可能となったのである。
なお、既述の例では、一方のナットに垂直押圧部を、他方のナットに傾斜押圧部を設けて構成したが、垂直押圧部を傾斜押圧面を有する傾斜押圧部に代え、他方の傾斜押圧部を傾斜角度を変えて形成して、互いに線状押圧となるよう構成してもよい。
本案のナットにおいて、環状凸部下面と環状段部上面とは若干の距離を有している。
これは、ナット締め込み時の押圧にて、線状押圧部分の変形にて接触位置が移動することを考慮したもので、締め込み程度によりこの双方の距離は可変である。
以上述べたように、本案はクロス雄ネジを利用し、互いに線状押圧をする逆ネジナットを用いる方式のため、ナット締め込みによる双方ナットの固定にて各ナットの緩みを防止することのできる有用なる機構を提供することができる。
8 to 9 are examples in which a vertical pressing portion is provided on the upper left screw nut and an inclined pressing portion is provided on the lower right screw nut, and the effects are the same as in the previous example. 10 to 11 are examples in which an annular convex portion is provided on the lower right screw nut, and this can also exhibit the same effect.
As mentioned above, although this plan was described, this plan has the feature in the place which makes a right pressure nut and a left screw nut pile up and down, and is screwed into a cross male screw, and makes it a linear press, and has a strong loosening prevention effect. is there. Conventionally, means that do not use a cross male screw has been used, and the fundamental solution has been difficult, but this has become possible.
In the example described above, one nut is provided with a vertical pressing portion and the other nut is provided with an inclined pressing portion. However, the vertical pressing portion is replaced with an inclined pressing portion having an inclined pressing surface, and the other inclined pressing portion is provided. The portions may be formed by changing the inclination angle so that they are linearly pressed with each other.
In the nut of the present plan, the lower surface of the annular convex portion and the upper surface of the annular step portion have a slight distance.
This is because the contact position moves due to the deformation of the linear pressing portion due to the pressing at the time of tightening the nut, and the distance between both is variable depending on the tightening degree.
As described above, the present plan uses a cross male screw and uses reverse screw nuts that linearly press each other, so that it is possible to prevent loosening of each nut by fixing both nuts by tightening the nut. A mechanism can be provided.

本考案の左ネジナットの正面図Front view of the left screw nut of the present invention 本考案の左ネジナットの底面図Bottom view of the left screw nut of the present invention 本考案の右ネジナットの平面図Plan view of right screw nut of the present invention 本考案の右ネジナットの正面図Front view of the right screw nut of the present invention 本考案の使用状態図Usage state diagram of the present invention 本考案の使用状態構造説明図Use state structure explanatory drawing of this invention 本考案の使用状態要部拡大説明図Explanatory drawing of the main part of the usage state of the present invention 本考案の別例による使用状態構造説明図Use state structure explanatory drawing by another example of this invention 本考案の別例による使用状態要部拡大説明図Explanatory drawing of the main part of the usage state according to another example of the invention 本考案の他例説明図Other examples of the present invention 本考案の他例説明図Other examples of the present invention

1 クロス雄ネジ
2 右ネジ
3 左ネジ
4 右ネジナット
5 環状段部
6 垂直押圧部
7 左ネジナット
8 環状凸部
9 傾斜押圧部
10 右ネジナット
11 左ネジナット
DESCRIPTION OF SYMBOLS 1 Cross male screw 2 Right screw 3 Left screw 4 Right screw nut 5 Annular step part 6 Vertical press part 7 Left screw nut 8 Annular convex part 9 Inclined press part 10 Right screw nut 11 Left screw nut

Claims (2)

右ネジと左ネジを刻設したクロス雄ネジを設け、右ネジを刻設した右ネジナットと左ネジを刻設した左ネジナットを設けて、クロス雄ネジに双方のナットを重ねて締め込む場合において、一方のナットに設けた傾斜押圧部と他方のナットに設けた垂直押圧部とが相互に線状押圧接触することにより、ナットの相互固定をすることにてクロス雄ネジに対する各ナットの緩みを防止するよう組み合わせ構成したことを特徴とするナットの緩み防止機構。When a cross male screw engraved with a right screw and a left screw is provided, a right screw nut engraved with a right screw and a left screw nut engraved with a left screw are provided, and both nuts are overlapped and tightened on the cross male screw The slanting pressing part provided on one nut and the vertical pressing part provided on the other nut are in linear pressing contact with each other, so that the nuts are fixed to each other, thereby loosening each nut with respect to the cross male screw. A mechanism for preventing loosening of a nut, characterized by being combined so as to prevent it. 垂直押圧部を傾斜押圧部に代えて、他方のナットの傾斜押圧部の傾斜度に対し異なる傾斜度としてなる請求項1記載のナットの緩み防止機構。The nut loosening prevention mechanism according to claim 1, wherein the vertical pressing portion is replaced with an inclined pressing portion, and the inclination is different from the inclination of the inclined pressing portion of the other nut.
JP2011001602U 2011-03-07 2011-03-07 Nut loosening prevention mechanism Expired - Lifetime JP3168087U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013087947A (en) * 2011-10-20 2013-05-13 Riken Kogyo Kk Crossbolt locking combination nut
JPWO2021106409A1 (en) * 2019-11-30 2021-06-03

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013087947A (en) * 2011-10-20 2013-05-13 Riken Kogyo Kk Crossbolt locking combination nut
JPWO2021106409A1 (en) * 2019-11-30 2021-06-03
WO2021106409A1 (en) * 2019-11-30 2021-06-03 合同会社Ysコーポレーション Loosening prevention nut
WO2021106228A1 (en) * 2019-11-30 2021-06-03 合同会社Ysコーポレーション Locknut

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