JP2018105367A - Lock nut - Google Patents

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JP2018105367A
JP2018105367A JP2016250280A JP2016250280A JP2018105367A JP 2018105367 A JP2018105367 A JP 2018105367A JP 2016250280 A JP2016250280 A JP 2016250280A JP 2016250280 A JP2016250280 A JP 2016250280A JP 2018105367 A JP2018105367 A JP 2018105367A
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nut
convex
nuts
concave
protruded
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JP6901260B2 (en
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守弘 和田
Morihiro Wada
守弘 和田
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Abstract

PROBLEM TO BE SOLVED: To provide a lock nut enabling two kinds of nuts to be integrally engaged in thread, facilitating management of the nuts and enabling their efficient work to be attained.SOLUTION: A lock nut comprises two kinds of nuts having similar thread holes, an end part of one nut is provided with a protruded part 3, an end part of the other nut is provided with a recess part 10 where said protruded part 3 can be advanced into the end part of the other nut, said protruded part 3 has its extremity end divided into several holding pieces 5. Said recess part 10 comprises, at an inner periphery of its extremity end, a fan-wise receiving part 12 where the extremity end of said protruded part 3 can be slid in forward or rearward and inward or outward. Its rearward inner periphery is provided with a guide part 13 for restricting a center of forwarding or retracting motion of said protruded part 3 onto a rotating axis of said recess nut. Its rear inner peripheral part is provided with a fan-wise guiding part 14 for depressing the extremity end of the protruded part 3 internally installed in said recess part 10 as said protruded part 3 advances toward said rotating axis.SELECTED DRAWING: Figure 1

Description

本発明は、二種類のナットを一組としたナットであって、加締め具合に応じて螺合されたボルトを挟持し、緩み止め機能を奏するナットに関するものである。   The present invention relates to a nut that is a set of two types of nuts, and that relates to a nut that holds a bolt that is screwed in accordance with a caulking condition and that has a function of preventing loosening.

今日、緩み止め機能を備えるナットには、例えば、ナット締め付け時にねじ孔に対して偏芯して嵌合する突出部と凹部の円錐台形状のテーパー面による楔作用でねじ嵌合部に軸線に対して直角方向の押圧力を加える緩み止め手法（下記特許文献１参照）や、第１ナットの凸部と第２座金の凹部とを偏芯して嵌合させた緩み止めナット（下記特許文献２参照）が公知となっている。   Nowadays, nuts with a locking function, for example, are aligned with the screw fitting part by the wedge action due to the frustoconical tapered surface of the protrusion and the concave part that fits eccentrically with the screw hole when tightening the nut. A locking method that applies a pressing force in a right angle direction (see Patent Document 1 below), or a locking nut that eccentrically fits the projections of the first nut and the recesses of the second washer (Patent Documents below) 2) is known.

一方で、第１のナットの円錐状突出部と第２ナットの貫通孔とを嵌合する際、前記突出部と貫通孔との接触干渉により緩み止め効果を奏し得るダブルナット（下記特許文献３参照）や、第１ナットと第２座金からなり第１ナットを回転させて締め付けることにより当該第１ナットの凸部テーパー状外周面が第２座金の凹部テーパー状内周面に内側へ押し付けられ、その作用により前記第１ナットの食い付き爪がボルト軸のネジ山に強力に密着する緩み止めナット（下記特許文献４又は５参照）が公知となっている。
前記従来の技術は、二種類のナットを一組として緩み止め機能を得る点で共通している。 On the other hand, when fitting the conical protrusion part of the first nut and the through hole of the second nut, a double nut (Patent Document 3 below) that can exert a locking effect due to contact interference between the protrusion part and the through hole. And the convex tapered outer peripheral surface of the first nut is pressed inwardly against the concave tapered inner peripheral surface of the second washer by rotating and tightening the first nut comprising the first nut and the second washer. As a result, there is known a locking nut (see Patent Document 4 or 5 below) in which the claw claw of the first nut strongly adheres to the thread of the bolt shaft.
The conventional technique is common in that a locking function is obtained by combining two types of nuts.

特公平３−５２６号公報Japanese Patent Publication No. 3-526 特開２０１５−２０３４９２号公報JP-A-2015-203492 特公平６−８０３２５号公報Japanese Patent Publication No. 6-80325 特開２０１５−１６５１５４号公報Japanese Patent Laying-Open No. 2015-165154 実用新案登録第３２０５０７５号公報Utility Model Registration No. 3205075

しかしながら、前記いずれの技術にあっても、二種類のナットの管理が煩雑である他、二種類のナットを一体的に螺合することが困難であり、効率的な作業を阻害するなど、物資の管理及び施工に煩雑さを伴うという問題がある。   However, in any of the above-described techniques, the management of the two types of nuts is complicated, and it is difficult to integrally screw the two types of nuts, which hinders efficient work. There is a problem that the management and construction are complicated.

本発明は、上記実情に鑑みてなされたものであって、二種類のナットを一体的に螺合することが可能であり、ナットの管理が容易であり、且つ効率的な作業を可能とする緩み止めナットの提供を目的とする。   The present invention has been made in view of the above-described circumstances, and two types of nuts can be integrally screwed together, management of the nuts is easy, and efficient work can be performed. The purpose is to provide a locking nut.

上記課題を解決するためになされた本発明による緩み止めナットは、同様のねじ孔を備える二種類のナットからなり、一方のナットの端部に凸部を備えると共に、他方のナットの端部に前記凸部が進入し得る凹部を備え、前記凸部は、その先方（進入方向）が複数の狭持片に分割され、前記凹部は、その先端部（前記凸部が進入してくる方向の端部）の内周に、前記凸部の先端が前後内外に滑動可能な先広がりの迎え部を備えると共に、その後方（前記凸部の進入方向）内周に前記凸部の進退の中心を当該凹ナットの回転軸上に規制するガイド部を備え、その後方内周に、前記凸部の進入に伴い当該凹部に内装された凸部の先端を前記回転軸に向けて加圧する先広がり（凸部の進入方向の奥に向って狭くなる）の誘導部を備えることを備えることを特徴とする。   The locking nut according to the present invention, which has been made to solve the above-mentioned problems, comprises two types of nuts having similar screw holes, and has a convex portion at the end of one nut and at the end of the other nut. The convex part is provided with a concave part into which the convex part can enter, and the convex part is divided into a plurality of holding pieces at the tip (entry direction), and the concave part has a tip part (in the direction in which the convex part enters). The front end of the convex portion is provided with a widening receiving portion that can slide back and forth inside and outside, and the center of the forward and backward movement of the convex portion on the inner periphery thereof (in the direction in which the convex portion enters). A guide portion that regulates on the rotation axis of the concave nut is provided, and at the rear inner periphery thereof, the tip spreads to press the tip of the convex portion built in the concave portion toward the rotation shaft as the convex portion enters ( A guide portion that is narrower toward the back in the direction of entry of the convex portion) And wherein the door.

前記挟持片に、前記ガイド部に圧接する幅広部を備える構造を有する緩み止めナットとして構成することもできる。   The clamping piece can also be configured as a locking nut having a structure including a wide portion pressed against the guide portion.

本発明による緩み止めナットによれば、一方のナットの端部に凸部を備えると共に、他方のナットの端部に前記凸部が進入し得る前記凸部より深い凹部を備える構成と、前記摺動部とガイド部の存在によって、同様のねじ孔のピッチに両ナットの配置を容易に合わせ、両ナットを一体的にボルトへ螺合することができ、効率的な作業が可能となる。
また、前記幅広部を備える構成を採ることによって、両ナットの一体性を容易に高めることができる。 According to the locking nut according to the present invention, the end of one nut is provided with a convex portion, and the end of the other nut is provided with a concave portion deeper than the convex portion into which the convex portion can enter, and the sliding Due to the presence of the moving portion and the guide portion, the arrangement of both nuts can be easily adjusted to the same pitch of the screw holes, and both nuts can be integrally screwed to the bolt, thereby enabling efficient work.
In addition, by adopting a configuration including the wide portion, the integrity of both nuts can be easily increased.

また、上記構成を有することによって、二種類のナットをそのピッチを合わせて一体化した状態で管理することによって、煩雑な二種類のナットの管理が容易となる。   In addition, by having the above-described configuration, management of two types of nuts becomes easy by managing the two types of nuts in an integrated state with the same pitch.

本発明による緩み止めナットの一例を示す緩み止め作業時における縦断面図及び正面図である。It is the longitudinal cross-sectional view and front view at the time of the locking work which show an example of the locking nut by this invention. 本発明による緩み止めナットの組立工程の一例を示す縦断面図及び平面図である。It is the longitudinal cross-sectional view and top view which show an example of the assembly process of the locking nut by this invention. 本発明による緩み止めナットを構成する凸ナットの一例を示す（Ａ）：底面図，（Ｂ）：正面図，（Ｃ）：平面図，（Ｄ）：Ａ−Ａ矢視断面図，（Ｅ）：Ｂ−Ｂ矢視断面図，（Ｆ）：側面図，（Ｇ）：Ｃ−Ｃ矢視断面図，（Ｈ）：Ｄ−Ｄ矢視断面図である。(A): bottom view, (B): front view, (C): plan view, (D): AA cross-sectional view, (E) showing an example of a convex nut constituting the locking nut according to the present invention ): BB arrow sectional view, (F): side view, (G): CC arrow sectional view, (H): DD arrow sectional view. 本発明による緩み止めナットを構成する凸ナットの一例を示す（Ａ）：底面図，（Ｂ）：正面図，（Ｃ）：平面図，（Ｄ）：Ｅ−Ｅ矢視断面図，（Ｅ）：Ｆ−Ｆ矢視断面図，（Ｆ）：側面図，（Ｇ）：Ｇ−Ｇ矢視断面図，（Ｈ）：Ｈ−Ｈ矢視断面図である。(A): Bottom view, (B): Front view, (C): Top view, (D): EE cross-sectional view, (E) showing an example of a convex nut constituting the locking nut according to the present invention. ): FF arrow sectional view, (F): side view, (G): GG arrow sectional view, (H): HH arrow sectional view. 本発明による緩み止めナットを構成する凹ナットの一例を示す（Ａ）：平面図，（Ｂ）：底面図，（Ｃ）：正面図，（Ｄ）：Ｉ−Ｉ矢視断面図，（Ｅ）：側面図，（Ｆ）：Ｊ−Ｊ矢視断面図である。(A): Top view, (B): Bottom view, (C): Front view, (D): II cross-sectional view, (E) ): Side view, (F): JJ cross-sectional view. 本発明による緩み止めナットを構成する凹ナットの一例を示す（Ａ）：Ｉ−Ｉ矢視断面図，（Ｂ）：Ｋ−Ｋ矢視断面図，（Ｃ）：Ｌ−Ｌ矢視断面図，（Ｄ）：Ｍ−Ｍ矢視断面図，（Ｅ）：Ｎ−Ｎ矢視断面図，（Ｆ）：Ｏ−Ｏ矢視断面図である。An example of the concave nut which comprises the locking nut by this invention is shown. (A): II arrow directional cross-sectional view, (B): KK arrow directional cross-sectional view, (C): LL arrow directional cross-sectional view , (D): MM arrow sectional view, (E): NN arrow sectional view, (F): OO arrow sectional view.

以下、本発明による緩み止めナットの実施の形態を、図面に基づき詳細に説明する。
図に示す例は、ピッチ及び径が合致した（以下「同様」という）のねじ孔を備える二種類のナットＸ，Ｙからなる（図１参照）。
前記二種類のナットＸ，Ｙは、端部に凸部３を備える凸ナット（図３又は図４参照）Ｘと、端部に前記凸部３が進入し得る前記凸部３より深い凹部１０を備える凹ナット（図５及び図６参照）Ｙである。 Embodiments of a locking nut according to the present invention will be described below in detail with reference to the drawings.
The example shown in the figure is composed of two types of nuts X and Y having screw holes with matching pitches and diameters (hereinafter referred to as “similar”) (see FIG. 1).
The two types of nuts X and Y are a convex nut (see FIG. 3 or FIG. 4) having a convex portion 3 at an end portion and a concave portion 10 deeper than the convex portion 3 into which the convex portion 3 can enter. It is a concave nut (refer FIG.5 and FIG.6) Y provided with.

この例の前記凸ナットＸは、その中央を貫通する前記ねじ孔１を備え、六角柱の頭部２と、その端面中央から突出する前記凸部３を備える。
この例の前記凸部３は、その先方に複数（この例では六つ）の切欠部４を等角度間隔で備え、各切欠部４を挟む複数（この例では六つ）の狭持片５に分割されている他、その先端側外周に当該凸部３が振れなく滑らかに進退する摺動部６を備える。
この例では、前記凸部３の先端外周に先細りのテーパー部７を備える。 The convex nut X of this example includes the screw hole 1 penetrating through the center thereof, and includes a hexagonal column head 2 and the convex portion 3 protruding from the center of the end surface.
The convex portion 3 of this example is provided with a plurality (six in this example) of notch portions 4 at equal intervals, and a plurality (six in this example) of sandwiching pieces 5 sandwiching each of the notch portions 4. In addition, the protrusion 3 is provided with a sliding portion 6 that smoothly moves forward and backward without shaking.
In this example, the taper part 7 of the taper part 7 is provided in the front-end | tip outer periphery of the said convex part 3. As shown in FIG.

一方、この例の凹ナットＹは、前記凸ナットＸと同じ六角柱の頭部８と、当該頭部８の中央を貫通する透孔９を備える。
前記透孔９は、その前部（前記凸部が進入してくる方向の部位）に前記凸部３を収容する前記凹部１０を備えると共に、その後部に前記凸ナットＸのねじ孔１と同様のねじ孔１１を備える。
この例の前記凹部１０は、その先端部の内周に、前記凸部３の先端が前後内外に滑動可能な先広がりの迎え部１２を備えると共に、その後方内周に前記摺動部６の進退の中心を当該凹ナットＹの回転軸上に規制するガイド部１３を備え、更に、その後方内周に、当該凹部１０に内装された凸部３の先端が前後内外に摺動する先広がりの誘導部１４を備える。 On the other hand, the concave nut Y of this example includes a hexagonal column head 8 that is the same as the convex nut X and a through hole 9 that passes through the center of the head 8.
The through-hole 9 includes the concave portion 10 that accommodates the convex portion 3 at the front portion (portion in which the convex portion enters), and the rear portion thereof is the same as the screw hole 1 of the convex nut X. The screw hole 11 is provided.
The concave portion 10 of this example is provided with a widening receiving portion 12 in which the tip of the convex portion 3 is slidable in the front and rear, inside and outside at the inner periphery of the tip portion, and at the rear inner periphery of the sliding portion 6. A guide portion 13 that restricts the center of advancement and retraction on the rotation axis of the concave nut Y is provided, and further, the tip of the convex portion 3 housed in the concave portion 10 slides forward, backward, inward and outward on the rear inner periphery thereof. The guiding part 14 is provided.

前記挟持片５は、当該狭持片５各々の先端部を、当該凸ナットＸの遠心方向へ前記ガイド部１３より外側へ均等に拡幅し、各狭持片５の先端部を前記前記ガイド部１３に対して均一に圧接する拡幅部５ａを備える構成とすることが、前記二種類のナットＸ，Ｙを一体化することに寄与し（図２参照）、ボルトＺと螺合する際に一体的形態を維持する上で望ましい（図３参照）。   The sandwiching piece 5 widens the front end portion of each of the sandwiching pieces 5 uniformly in the centrifugal direction of the convex nut X to the outside of the guide portion 13, and the front end portion of each sandwiching piece 5 is the guide portion. The configuration including the widened portion 5a that is uniformly pressed against 13 contributes to the integration of the two types of nuts X and Y (see FIG. 2), and is integrated when screwed with the bolt Z. This is desirable for maintaining the target form (see FIG. 3).

本発明による緩み止めナット及びそれを構成する前記凸ナットＸ及び前記凹ナットＹは、以上の如く構成され、先ず、ボルトＷに前記凸ナットＸを螺合し、更に、同じボルトＷに前記凹ナットＹを螺合し、前記拡幅部５ａが前記ガイド部１３に圧接する位置から両ナットＸ，Ｙの頭部２の六角形の角(以下「頭部角」という)の位相が合致する位置にまで加締め、両ナットＸ，Ｙを組立形態に一体化する組立工程を経ることによって完成する（図２参照）。   The loosening prevention nut according to the present invention and the convex nut X and the concave nut Y constituting the same are configured as described above. First, the convex nut X is screwed into a bolt W, and further, the concave bolt is engaged with the same bolt W. A position where the phases of the hexagonal corners (hereinafter referred to as “head angle”) of the heads 2 of the nuts X and Y coincide with each other from a position where the nut Y is screwed and the widened portion 5a is in pressure contact with the guide portion 13. And completed through an assembly process in which both nuts X and Y are integrated into an assembly form (see FIG. 2).

本発明による緩み止めナットは、使用時においては、前記組立工程で一体化した状態で、指定されたボルトＺに螺合し、所望の位置まで両ボルトＸ，Ｙを回し入れる工程（図１上参照）、前記凸ナットＸを所定のトルクで締める工程、及び前記凹ナットＹのみを所定のトルクで加締める工程（図１下参照）を順次経ることにより、当該緩み止めナットの装着作業及び緩み止め作業を完了する。   When the locking nut according to the present invention is used, it is screwed into a specified bolt Z in a state of being integrated in the assembly process, and the bolts X and Y are turned to a desired position (upper part of FIG. 1). Reference), a step of tightening the convex nut X with a predetermined torque, and a step of crimping only the concave nut Y with a predetermined torque (see the lower part of FIG. 1) are sequentially performed, so that the mounting operation and the loosening of the locking nut Complete the stop operation.

前記緩み止め作業においては、前記凸部３の進入に伴って、前記凸部３の先端が、前記凹部１０の誘導部１４により、螺合されたボルトＺのネジ山へ向けて押し入れられ、前記凸部３の各把持片５がボルトＺを把持することにより、前記凸ナットＸとボルトＺとの締結力が高められ、緩み止め機能を奏することとなる。   In the loosening prevention work, as the convex portion 3 enters, the tip of the convex portion 3 is pushed into the threaded bolt Z by the guide portion 14 of the concave portion 10, When each gripping piece 5 of the convex portion 3 grips the bolt Z, the fastening force between the convex nut X and the bolt Z is increased, and a loosening prevention function is achieved.

この例の前記ガイド部１３は、一定長にわたる円筒状の等断面空洞を備え、両ナットＸ，Ｙの頭部角の位相が合致する位置を含む部位である。
前記ガイド部１３は、前記摺動部６又は前記拡幅部５ａが当該ガイド部１３に接し又は圧接する位置から両ナットＸ，Ｙの頭部角の位相が合致する位置に至るまで加締め得る進入長を確保することが望ましい。
前記ガイド部１３の進入長は、前記凸部３が先広がり（末窄み）の誘導部１４に達した位置で両ナットＸ，Ｙの頭部角の位相が合致し、当該ガイド部１３と誘導部１４との境界で組立形態が保持される長さを採用してもよい（図１又は図２参照）。 The guide portion 13 of this example is a part including a cylindrical equi-section cavity extending over a certain length and including a position where the head angles of both nuts X and Y coincide with each other.
The guide portion 13 can be caulked from the position where the sliding portion 6 or the widened portion 5a comes into contact with or pressure contact with the guide portion 13 to the position where the head angle phases of the nuts X and Y coincide with each other. It is desirable to ensure the length.
The approach length of the guide portion 13 is such that the phase of the head angles of the nuts X and Y coincides with the guide portion 13 at the position where the convex portion 3 reaches the guide portion 14 that is widened (stolen). You may employ | adopt the length by which an assembly form is hold | maintained by the boundary with the guidance | induction part 14 (refer FIG. 1 or FIG. 2).

Ｘ 凸ナット，Ｙ 凹ナット，Ｚ ボルト，Ｗ ボルト，
１ ねじ孔，２ 頭部，３ 凸部，４ 切欠部，
５ 挟持片，５ａ 拡幅部，
６ 摺動部，７ テーパー部，
８ 頭部，９ 透孔，１０ 凹部，
１１ ねじ孔，１２ 迎え部，１３ ガイド部，１４ 誘導部，
X convex nut, Y concave nut, Z bolt, W bolt,
1 screw hole, 2 head, 3 convex, 4 notch,
5 clamping pieces, 5a widened part,
6 sliding part, 7 taper part,
8 heads, 9 through holes, 10 recesses,
11 Screw hole, 12 Picking part, 13 Guide part, 14 Guide part,

Claims (2)

同様のねじ孔を備える二種類のナットからなり、一方のナットの端部に凸部を備えると共に、他方のナットの端部に前記凸部が進入し得る凹部を備え、前記凸部は、その先方が複数の狭持片に分割され、前記凹部は、その先端部の内周に、前記凸部の先端が前後内外に滑動可能な先広がりの迎え部を備えると共に、その後方内周に前記凸部の進退の中心を当該凹ナットの回転軸上に規制するガイド部を備え、その後方内周に、前記凸部の進入に伴い当該凹部に内装された凸部先端を前記回転軸に向けて加圧する先広がりの誘導部を備えることを備えることを特徴とする緩み止めナット。   It consists of two types of nuts with similar screw holes, and has a convex part at the end of one nut and a concave part into which the convex part can enter at the end of the other nut. The tip is divided into a plurality of sandwiching pieces, and the concave portion has a forwardly-growing reception portion on the inner periphery of the tip portion thereof, the tip of the convex portion being slidable in the front and rear, inside and outside, and the rear inner periphery thereof. A guide portion that regulates the center of the forward and backward movement of the convex portion on the rotational axis of the concave nut is provided, and the front end of the convex portion that is housed in the concave portion as the convex portion enters is directed toward the rotational shaft. A loosening prevention nut comprising: a forwardly extending guiding portion that pressurizes the nut. 前記挟持片に、前記ガイド部に圧接する拡幅部を備えることを特徴とする前記請求項１に記載の緩み止めナット。
The loosening prevention nut according to claim 1, wherein the sandwiching piece includes a widened portion that presses against the guide portion.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110873113A (en) * 2019-12-06 2020-03-10 荆门市佰思机械科技有限公司 Interlocking reusable locknut

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516129A1 (en) * 1995-05-03 1996-11-07 Prym William Gmbh & Co Kg Self locking nut
JP2011017352A (en) * 2009-07-07 2011-01-27 Shohei Yajima Locking nut
JP2013217486A (en) * 2012-04-09 2013-10-24 Tanaka Masae Lock nut
CN110307239A (en) * 2019-08-08 2019-10-08 朱正唯 A kind of anti-loosening combination nut

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516129A1 (en) * 1995-05-03 1996-11-07 Prym William Gmbh & Co Kg Self locking nut
JP2011017352A (en) * 2009-07-07 2011-01-27 Shohei Yajima Locking nut
JP2013217486A (en) * 2012-04-09 2013-10-24 Tanaka Masae Lock nut
CN110307239A (en) * 2019-08-08 2019-10-08 朱正唯 A kind of anti-loosening combination nut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110873113A (en) * 2019-12-06 2020-03-10 荆门市佰思机械科技有限公司 Interlocking reusable locknut

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