JP2011017352A - Locking nut - Google Patents
Locking nut Download PDFInfo
- Publication number
- JP2011017352A JP2011017352A JP2009160537A JP2009160537A JP2011017352A JP 2011017352 A JP2011017352 A JP 2011017352A JP 2009160537 A JP2009160537 A JP 2009160537A JP 2009160537 A JP2009160537 A JP 2009160537A JP 2011017352 A JP2011017352 A JP 2011017352A
- Authority
- JP
- Japan
- Prior art keywords
- nut
- convex
- concave
- bolt
- cylindrical
- 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
Abstract
Description
本発明は、ボルトに螺合して被締結部材を締め付け固定するゆるみ止めナットに関する。 The present invention relates to a locking nut that is screwed onto a bolt to fasten and fix a member to be fastened.
ボルトに２個のナットを螺合して該２個のナットの相互圧接によって被締結部材を締め付け、固定するダブルナット方式では、両ナットの締め付けによって接触面の圧接力を高めてナットの緩むのを防止している圧接力を高めればロック効果は増大するが、圧接力を必要以上に高めると過大な引張り荷重が加わり、許容引張り荷重を超えてボルトが切断する恐れがある。
このため、２個のナットの相互圧接によるダブルナット方式に加えて、ボルト軸線の直角方向に押圧力を加えて、さらにナットのゆるみ止め効果を得るための方式として、従来からのナットの形状に工夫をこらしたゆるみ止めナットが各種提案されている。
例えば、特開昭６１−２４４９１２号公報によれば、「一対のナットから成り、一方のナットにはねじ穴を囲繞し外周面が円錐台形状のテーパ面に形成されている突出部が設けられ、他方のナットには内周面が円錐台形状のテーパ面に形成され前記突出部に嵌合する凹部が設けられ、前記突出部又は凹部のいずれか一方がねじ穴の軸線に対して偏心している装置において、前記突出部のテーパ面の角度αが、前記凹部のテーパ面の傾斜角度βより大きくなっていることを特徴とするナットのゆるみ止め装置」が開示されている。
In the double nut system, in which two nuts are screwed onto the bolts and the fastened members are fastened by mutual pressure welding of the two nuts, the nuts are loosened by increasing the pressure contact force of the contact surface by tightening both nuts. Increasing the pressure contact force that prevents this increases the locking effect. However, if the pressure force is increased more than necessary, an excessive tensile load may be applied and the bolt may be cut beyond the allowable tensile load.
For this reason, in addition to the double nut method with two nuts pressed against each other, as a method to obtain a nut locking effect by applying a pressing force in the direction perpendicular to the bolt axis, the conventional nut shape has been adopted. Various lock nuts have been proposed.
For example, according to Japanese Patent Application Laid-Open No. 61-244912, “a projecting portion comprising a pair of nuts, one nut surrounding a screw hole and having an outer peripheral surface formed as a truncated cone-shaped tapered surface is provided. The other nut has an inner peripheral surface formed in a truncated cone-shaped tapered surface and is provided with a recess that fits into the protrusion, and either the protrusion or the recess is eccentric with respect to the axis of the screw hole. In this device, a nut locking device is disclosed in which the angle α of the tapered surface of the protrusion is larger than the inclination angle β of the tapered surface of the recess.
また、実開昭５３−４５３５４号公報によれば、「雄ネジ部を有する軸部材と、内周面に該軸部材の雄ネジ部に螺合する雌ネジ部が螺設され、外周面にテーパ雄ネジ部が螺設され、かつ該外周面軸線方向に割り溝部を有するナットと、内周面に該ナットの該テーパ雄ネジ部に螺合するテーパ雌ネジ部が螺設されたロックナットとより構成してなるロックナット機構」が開示され、「前記突出部のテーパ面の傾斜角度を前記凹部のテーパ面の傾斜角度より大きくするという簡単な技術的手段によって、ボルトのねじ部との有間が大きい場合においても、すぐれたゆるみ止め効果が得られる…」としている。 Further, according to Japanese Utility Model Laid-Open No. 53-45354, “a shaft member having a male screw portion and a female screw portion to be screwed to the male screw portion of the shaft member are screwed on the inner peripheral surface, and the outer peripheral surface is provided. A lock nut in which a taper male screw portion is screwed, and a nut having a split groove in the axial direction of the outer peripheral surface, and a taper female screw portion that is screwed into the taper male screw portion of the nut on the inner peripheral surface. A lock nut mechanism comprising the above-mentioned is disclosed, and `` a simple technical means of increasing the inclination angle of the taper surface of the protruding portion to be greater than the inclination angle of the taper surface of the concave portion, Even when the gap is large, an excellent anti-loosening effect can be obtained ... ".
しかし、前記特開昭６１−２４４９１２号公報の発明によれば、それぞれ異なる傾斜角度のテーパ面を面接触させるため、それぞれのねじ寸法精度、均一なメッキ処理精度など加工技術とその加工工具精度の維持管理が要求されるなどの問題点があると想定される。 However, according to the invention of the above-mentioned Japanese Patent Application Laid-Open No. 61-244912, since the taper surfaces having different inclination angles are brought into surface contact with each other, the processing technology such as the screw dimensional accuracy, uniform plating processing accuracy and the processing tool accuracy thereof are improved. It is assumed that there are problems such as requiring maintenance.
また、前記実開昭５３−０４５３５４号公報の考案によれば、割り溝部を有するテーパ雄ネジ部とテーパ雌ネジ部が螺合する構造のダブルナットであり、ロック或いはロック解除を極めて簡単に行えるとあるが、前記テーパ雄ネジとテーパ雌ネジは特殊なねじ加工技術が必要となり、量産に適さず、低廉化が困難である。 Further, according to the idea of Japanese Utility Model Publication No. 53-045354, the double nut has a structure in which a tapered male screw portion having a split groove portion and a tapered female screw portion are screwed together, and can be locked or unlocked very easily. However, the taper male screw and the taper female screw require special screw processing techniques, are not suitable for mass production, and are difficult to reduce the cost.
本発明者は、上記に鑑み鋭意研究の結果、次の手段によりこの課題を解決した。 （１）ボルトに螺合して被締結部材を締め付け固定する凸形状と凹形状２個一組のナットからなるゆるみ止めナットにおいて、
前記凸形状ナットは、円筒状の凸部が設けられ、かつ前記円筒状凸部の軸方向に一方の端部が開放されたスリットが１又は２以上開設されてなり、前記凹形状ナットは、前記凸形状のナットの凸部が挿入される円筒状の内壁面を有する凹部が設けられてなり、かつ前記凸形状のナットの凸部又は凹形状のナットの凹部のいずれか一方が、前記ボルトの軸線に対して偏心して形成されてなることを特徴とするゆるみ止めナット。
（２）ボルトに螺合して被締結部材を締め付け固定する凸形状と凹形状２個一組のナットからなるゆるみ止めナットにおいて、
前記凸形状ナットは、円筒状の凸部が設けられ、かつ前記円筒状凸部の軸方向に一方の端部が開放されたスリットが１又は２以上開設され、さらに前記円筒状凸部の外側面に鍔状の突起部が突設されてなり、前記凹形状ナットは、前記凸形状ナットの凸部が挿入される円筒状の内壁面を有する凹部が設けられ、また前記凹部の内壁面先端に前記凸形状ナットの鍔状の突起部を係止して抜け止めするための係止爪が形成され、さらに該係止爪と前記内壁面間に前記鍔状の突起部が収容される空間部が設けられ、かつ前記凸形状のナットの凸部又は凹形状のナットの凹部のいずれか一方が、前記ボルトの軸線に対して偏心して形成されてなることを特徴とするゆるみ止めナット。
As a result of intensive studies in view of the above, the present inventor has solved this problem by the following means. (1) In a locking nut composed of a set of two convex and concave nuts that are screwed into bolts to fasten and fix a member to be fastened.
The convex nut is provided with a cylindrical convex portion, and one or more slits having one end opened in the axial direction of the cylindrical convex portion, and the concave nut is A concave portion having a cylindrical inner wall surface into which the convex portion of the convex nut is inserted is provided, and either the convex portion of the convex nut or the concave portion of the concave nut is the bolt. A locking nut characterized by being formed eccentrically with respect to the axis.
(2) In a locking nut consisting of a pair of a convex shape and a concave shape that are screwed into a bolt to fasten and fix a member to be fastened,
The convex nut is provided with a cylindrical convex portion, and has one or more slits opened at one end in the axial direction of the cylindrical convex portion, and further outside the cylindrical convex portion. A flange-like protrusion is provided on a side surface, and the concave nut is provided with a concave portion having a cylindrical inner wall surface into which the convex portion of the convex nut is inserted, and the inner wall tip of the concave portion A locking claw for locking the hook-shaped protrusion of the convex nut to prevent it from coming off, and a space in which the hook-shaped protrusion is accommodated between the locking claw and the inner wall surface A loosening prevention nut characterized in that a portion is provided and either one of the convex portion of the convex nut or the concave portion of the concave nut is formed eccentric with respect to the axis of the bolt.
本発明によれば、次のような効果が発揮される。
１．本発明の請求項１の発明によれば、
ボルトに螺合して被締結部材を締め付け固定する凸形状と凹形状２個一組のナットからなるゆるみ止めナットにおいて、
前記凸形状ナットは、円筒状の凸部が設けられ、かつ前記円筒状凸部の軸方向に一方の端部が開放されたスリットが１又は２以上開設されてなり、前記凹形状ナットは、前記凸形状のナットの凸部が挿入される円筒状の内壁面を有する凹部が設けられてなり、かつ前記凸形状のナットの凸部又は凹形状のナットの凹部のいずれか一方が、前記ボルトの軸線に対して偏心して形成されているので、
両ナットの圧接によって生ずる圧接力が増大して軸方向のロッキング効果を得るとともに、前記凸部又は凹部内壁のいずれか一方がボルトの軸線に対して偏心して形成されているため、ナットを締め付けていくと円筒状凸部が凹部内壁面に接触してボルトの軸線に対して直角方向の押圧力が働き、かつ円筒状に形成された凸部にスリットが設けてあるためナットの圧接力を高めれば、凹部の内壁に接触している凸部がボルトを押圧するため、さらにボルトの軸線に対して直角方向の押圧力が働き、相乗的にロッキング効果が得られる。
According to the present invention, the following effects are exhibited.
1. According to the invention of claim 1 of the present invention,
In a locking nut consisting of a set of two convex and concave nuts that are screwed into bolts to fasten and fasten the member to be fastened.
The convex nut is provided with a cylindrical convex portion, and one or more slits having one end opened in the axial direction of the cylindrical convex portion, and the concave nut is A concave portion having a cylindrical inner wall surface into which the convex portion of the convex nut is inserted is provided, and either the convex portion of the convex nut or the concave portion of the concave nut is the bolt. Because it is eccentric with respect to the axis of
The pressure force generated by the pressure contact of both nuts increases to obtain an axial locking effect, and either the convex portion or the concave inner wall is formed eccentrically with respect to the bolt axis, so that the nut is tightened. The cylindrical convex part comes into contact with the inner wall surface of the concave part, and a pressing force in a direction perpendicular to the axis of the bolt acts. Also, since the cylindrical convex part has a slit, the pressure contact force of the nut can be increased. In this case, since the convex portion in contact with the inner wall of the concave portion presses the bolt, a pressing force in a direction perpendicular to the axis of the bolt acts and synergistically obtains a locking effect.
さらに、前記ナットの締め付けによって圧接力を高めても、断面凹形状ナットの凹部内壁に凸形状ナットの円筒状に形成された凸部が接触してボルトを押圧し、凸形状のナットはその位置で停止するため、ナットの過度の締め付けによるボルトの切断を防止できる。 Furthermore, even if the pressure contact force is increased by tightening the nut, the convex portion formed in the cylindrical shape of the convex nut comes into contact with the concave inner wall of the concave nut in cross section and presses the bolt. Therefore, the bolt can be prevented from being cut by excessive tightening of the nut.
また、凸形状ナット及び凹形状ナットともに円筒形状のため、手加工で製作せざるを得ないナットの需要に対しても、容易に加工製作できる構造である。 Further, since both the convex nut and the concave nut are cylindrical, the structure can be easily processed and manufactured even for the demand for a nut that must be manufactured by hand.
さらにまた、適切な材料選定により、複数回の繰り返し着脱使用することが可能である。 Furthermore, it is possible to repeatedly attach and detach a plurality of times by selecting an appropriate material.
２．本発明の請求項２の発明によれば、
ボルトに螺合して被締結部材を締め付け固定する凸形状と凹形状２個一組のナットからなるゆるみ止めナットにおいて、
前記凸形状ナットは、円筒状の凸部が設けられ、かつ前記円筒状凸部の軸方向に一方の端部が開放されたスリットが１又は２以上開設され、さらに前記円筒状凸部の外側面に鍔状の突起部が突設されてなり、前記凹形状ナットは、前記凸形状ナットの凸部が挿入される円筒状の内壁面を有する凹部が設けられ、また前記凹部の内壁面先端に前記凸形状ナットの鍔状の突起部を係止して抜け止めするための係止爪が形成され、さらに該係止爪と前記内壁面間に前記鍔状の突起部が収容される空間部が設けられ、かつ前記凸形状のナットの凸部又は凹形状のナットの凹部のいずれか一方が、前記ボルトの軸線に対して偏心して形成されているので、
両ナットの圧接によって生ずる圧接力が増大して軸方向のロッキング効果を得るとともに、前記凸部又は凹部内壁のいずれか一方がボルトの軸線に対して偏心して形成されているため、ナットを締め付けていくと円筒状凸部が凹部内壁面に接触してボルトの軸線に対して直角方向の押圧力が働き、かつ円筒状に形成された凸部にスリットが設けてあるためナットの圧接力を高めれば、凹部の内壁に接触している凸部がボルトを押圧するため、さらにボルトの軸線に対して直角方向の押圧力が働き、相乗的にロッキング効果が得られる。
2. According to the invention of claim 2 of the present invention,
In a locking nut consisting of a set of two convex and concave nuts that are screwed into bolts to fasten and fasten the member to be fastened.
The convex nut is provided with a cylindrical convex portion, and has one or more slits opened at one end in the axial direction of the cylindrical convex portion, and further outside the cylindrical convex portion. A flange-like protrusion is provided on a side surface, and the concave nut is provided with a concave portion having a cylindrical inner wall surface into which the convex portion of the convex nut is inserted, and the inner wall tip of the concave portion A locking claw for locking the hook-shaped protrusion of the convex nut to prevent it from coming off, and a space in which the hook-shaped protrusion is accommodated between the locking claw and the inner wall surface Since either one of the convex portion of the convex nut or the concave portion of the concave nut is formed eccentrically with respect to the axis of the bolt,
The pressure force generated by the pressure contact of both nuts increases to obtain an axial locking effect, and either the convex portion or the concave inner wall is formed eccentrically with respect to the bolt axis, so that the nut is tightened. The cylindrical convex part comes into contact with the inner wall surface of the concave part, and a pressing force in a direction perpendicular to the axis of the bolt acts. Also, since the cylindrical convex part has a slit, the pressure contact force of the nut can be increased. In this case, since the convex portion in contact with the inner wall of the concave portion presses the bolt, a pressing force in a direction perpendicular to the axis of the bolt acts and synergistically obtains a locking effect.
さらに、前記ナットの締め付けによって圧接力を高めても、断面凹形状ナットの凹部内壁に凸形状ナットの円筒状に形成された凸部が接触してボルトを押圧し、凸形状のナットはその位置で停止するため、ナットの過度の締め付けによるボルトの切断を防止できる。 Furthermore, even if the pressure contact force is increased by tightening the nut, the convex portion formed in the cylindrical shape of the convex nut comes into contact with the concave inner wall of the concave nut in cross section and presses the bolt. Therefore, the bolt can be prevented from being cut by excessive tightening of the nut.
また、凸形状ナット及び凹形状ナットともに円筒形状のため、手加工で製作せざるを得ないナットの需要に対しても、容易に加工製作できる構造である。 Further, since both the convex nut and the concave nut are cylindrical, the structure can be easily processed and manufactured even for the demand for a nut that must be manufactured by hand.
さらにまた、適切な材料選定により、複数回の繰り返し着脱使用することが可能である。 Furthermore, it is possible to repeatedly attach and detach a plurality of times by selecting an appropriate material.
その上、前記円筒状凸部の外側面に鍔状の突起部が突設されてなり、さらに前記凹部の内壁面先端に前記凸形状ナットの鍔状の突起部を係止して抜け止めするための係止爪が形成され、さらに該係止爪と前記内壁面間に前記鍔状の突起部が収容される空間部が設けられているので、
万が一、多少ナットにゆるみが生じても、前記鍔状の突起部が前記係止爪に係止してナットの脱落防止ができるため、ナット脱落による危険を事前に防止することができる。
In addition, a hook-like protrusion is provided on the outer surface of the cylindrical protrusion, and the hook-like protrusion of the protrusion nut is locked to the tip of the inner wall surface of the recess to prevent the protrusion. Since a locking claw for forming the hook-shaped protrusion is accommodated between the locking claw and the inner wall surface,
Even if the nut is somewhat loosened, the hook-like projections are locked to the locking claws to prevent the nut from falling off, so that it is possible to prevent danger due to nut dropping in advance.
本発明を実施するための形態を実施例図に基づいて詳細に説明する。
本発明の要旨は、
主としてナットのゆるみを防止するようにボルトに螺合する一方が凸形状のナット１と、他方が断面凹形状のナット２を重合してゆるみ止めする一対のナットで構成されている。
実施例１において、前記凸形状のナット１は、その凸部３が円筒状に形成され、かつ前記円筒状凸部３の軸方向に一方の端部が開放されたスリット５が１又は２以上開設され、前記断面凹形状のナット２は、前記凸形状のナット１の凸部３が挿入される円筒状の内壁面７を有する凹部６が設けられてなり、かつ前記凸部３又は凹部６内壁面７のいずれか一方がボルトの軸線４に対して偏心度ｄだけ偏心して偏心軸４’が形成されてなることを特徴とするゆるみ止めナットである。
A mode for carrying out the present invention will be described in detail with reference to the drawings.
The gist of the present invention is as follows.
Mainly, a nut 1 having a convex shape and a nut 2 having a concave cross section are overlapped to prevent the nut from loosening, and the other is composed of a pair of nuts that prevent the nut from loosening.
In Example 1, the convex nut 1 has one or more slits 5 in which the convex part 3 is formed in a cylindrical shape and one end is opened in the axial direction of the cylindrical convex part 3. The nut 2 having a concave cross section is provided with a concave portion 6 having a cylindrical inner wall surface 7 into which the convex portion 3 of the convex nut 1 is inserted, and the convex portion 3 or the concave portion 6. One of the inner wall surfaces 7 is eccentric with respect to the axis 4 of the bolt by an eccentricity d to form an eccentric shaft 4 ′.
さらに、実施例２において、前記実施例１に追加して、前記円筒状凸部３の外側面に鍔状の突起部１６が突設されてなり、さらに前記凹部６の内壁面７先端に前記凸形状ナット１の鍔状の突起部１６を係止して抜け止めするための係止爪１７が形成され、さらに該係止爪１７と前記内壁面７間に前記鍔状の突起部１６が収容される空間部１８が設けられているので、万が一、多少ナットにゆるみが生じても、ナットの脱落防止ができるため、ナット脱落による危険を事前に防止することができることを特徴とするゆるみ止めナットである。 Further, in the second embodiment, in addition to the first embodiment, a hook-like protrusion 16 is provided on the outer surface of the cylindrical protrusion 3, and the inner wall 7 of the recess 6 has a tip at the tip. A locking claw 17 for locking and preventing the hook-shaped protrusion 16 of the convex nut 1 from being locked is formed. Further, the hook-shaped protrusion 16 is interposed between the locking claw 17 and the inner wall surface 7. Since the space 18 to be accommodated is provided, even if the nut is loosened to some extent, the nut can be prevented from falling off, so that it is possible to prevent the danger caused by dropping off the nut in advance. It is a nut.
図１及び図２において、断面凸形状の子ナット１は、ボルト１３の雄ねじ１４と螺合する雌ねじ９が螺刻された、例えば６角形状の把持部８が形成され、前記凸部３には軸方向に１又は２以上（本実施例では４個所）のスリット５が開設されている。 In FIG. 1 and FIG. 2, the child nut 1 having a convex cross section is formed with a hexagonal gripping portion 8 in which a female screw 9 screwed with a male screw 14 of a bolt 13 is threaded. Are provided with one or more (four in this embodiment) slits 5 in the axial direction.
断面凹形状の親ナット２は、前記凸形状の子ナット１の凸部３が挿入される凹部６の内壁面７が円筒形状に形成されていて、前記内壁面７は前記凹部６がボルトの軸線４に対して偏心度ｄだけ偏心して偏心軸４’が形成され、子ナット１と同様にボルト１３の雄ねじ１４と螺合する雌ねじ１１が螺刻された、例えば６角形状の把持部１０が形成されている。 In the parent nut 2 having a concave cross section, the inner wall surface 7 of the concave portion 6 into which the convex portion 3 of the convex child nut 1 is inserted is formed in a cylindrical shape. An eccentric shaft 4 ′ is formed by eccentricity with respect to the axis 4 by an eccentricity d, and a female screw 11 that is screwed with the male screw 14 of the bolt 13 is threaded similarly to the child nut 1. Is formed.
図３において、締結すべき被締結部材１２、１２を貫通して雄ねじ１４が螺刻されたボルト１３に親ナット２と子ナット１が螺設されている。親ナット２がボルト１３に適切な締め付けトルク値で螺設された後に、子ナット１がボルト１３にねじ込まれていくと、親ナット２の偏心している凹部６の内壁面７の壁端部に子ナット１の凸部先端部１５がまず接触し、凸部３のスリット５が変形してさらに子ナット１がねじ込まれ、その結果凸部３の雌ねじ９がボルト１３の雄ねじ１４を押圧することによって、子ナット１によりボルトの軸線４に対して直角方向の押圧力とボルトの軸線４方向の圧接力が同時に働き、子ナット１はその位置で停止する。 In FIG. 3, a parent nut 2 and a child nut 1 are screwed to a bolt 13 in which a male screw 14 is threaded through a member to be fastened 12 and 12 to be fastened. After the parent nut 2 is screwed to the bolt 13 with an appropriate tightening torque value, when the child nut 1 is screwed into the bolt 13, the wall end portion of the inner wall surface 7 of the recessed portion 6 in which the parent nut 2 is eccentric is formed. The protrusion tip 15 of the child nut 1 first contacts, the slit 5 of the protrusion 3 is deformed, and the child nut 1 is further screwed in. As a result, the female screw 9 of the protrusion 3 presses the male screw 14 of the bolt 13. As a result, the pressing force in the direction perpendicular to the axis 4 of the bolt and the pressure contact force in the direction of the axis 4 of the bolt act simultaneously by the child nut 1, and the child nut 1 stops at that position.
上記の結果、両ナットの圧接によって生ずる圧接力によってボルトの軸線４方向の通常のダブルナット方式によるロッキング効果を得るとともに、さらにボルトの軸線４に対して直角方向の押圧力が働き、相乗的なロッキング効果が得られ、より強固なゆるみ止めを行うことができる。 As a result of the above, a locking effect by a normal double nut system in the direction of the bolt axis 4 is obtained by the pressure contact force generated by the pressure contact of both nuts, and a pressing force in a direction perpendicular to the axis 4 of the bolt works. A locking effect is obtained, and a stronger locking can be performed.
また、子ナット１がボルト１３にねじ込まれていくと、親ナット２の偏心している凹部６の内壁面７に子ナット１の凸部先端部１５がまず接触し、凸部３のスリット５が変形してさらに子ナット１がねじ込まれ、その結果、前記内壁面７が円筒状の凸部３を押圧し、該凸部３の雌ねじ９がボルト１３の雄ねじ１４を押圧することによって、子ナット１によりボルトの軸線４に対して直角方向の押圧力とボルトの軸線４方向の圧接力が同時に働き、かつ子ナット１はその位置で停止するため、ボルト１３の許容引張荷重値を超過しないようにナットの締め付けによる圧接限界を設定でき、したがってナットの過度の締め付けによるボルトの切断を防止できる。 When the child nut 1 is screwed into the bolt 13, the convex tip end portion 15 of the child nut 1 first comes into contact with the inner wall surface 7 of the eccentric recess 6 of the parent nut 2, and the slit 5 of the convex portion 3 is formed. As a result, the child nut 1 is further screwed, and as a result, the inner wall surface 7 presses the cylindrical convex portion 3, and the female screw 9 of the convex portion 3 presses the male screw 14 of the bolt 13. 1 so that the pressing force in the direction perpendicular to the bolt axis 4 and the pressure contact force in the direction of the bolt axis 4 act simultaneously, and the child nut 1 stops at that position, so that the allowable tensile load value of the bolt 13 is not exceeded. The pressure contact limit due to tightening of the nut can be set, so that the bolt can be prevented from being cut due to excessive tightening of the nut.
前記子ナット１を前記親ナット２へ螺入する際に、親ナット２凹部６のボルトの軸線４から偏心度ｄだけ偏心した内壁面７への挿入がスムースに行われるために、子ナット１の凸部３の最先端部分は、台形状に面取りされていることが好ましい。 When the child nut 1 is screwed into the parent nut 2, the child nut 1 is smoothly inserted into the inner wall surface 7 that is eccentric from the axis 4 of the bolt of the parent nut 2 recess 6 by the eccentricity d. It is preferable that the most distal portion of the convex portion 3 is chamfered in a trapezoidal shape.
以上の実施例説明において、親ナット２凹部６の内壁面７がボルトの軸線４から偏心しているとしたが、前記親ナット２の内壁面７に代えて子ナット１の凸部３がボルトの軸線４に対して偏心して形成するようにしてもよい。 In the above description of the embodiment, the inner wall surface 7 of the concave portion 6 of the parent nut 2 is eccentric from the axis 4 of the bolt, but the convex portion 3 of the child nut 1 is replaced by the inner wall surface 7 of the parent nut 2. You may make it form eccentrically with respect to the axis 4.
さらに、金型を使用した量産のための成形時において金型の離型を容易にするため、前記子ナット１の円筒状凸部３、及び前記親ナット２の内壁面７は、金型抜き勾配を持たせておくことが好ましい。 Furthermore, in order to facilitate mold release during molding for mass production using a mold, the cylindrical convex portion 3 of the child nut 1 and the inner wall surface 7 of the parent nut 2 are formed with a die cut. It is preferable to have a gradient.
また、上記実施例説明において、凹部６を有する親ナット２、円筒状に凸部が形成された子ナット１としたが、これに限定されることなく、凹部６を有する子ナット２、円筒状に凸部が形成された親ナット１としてもよい。 In the above description of the embodiment, the parent nut 2 having the concave portion 6 and the child nut 1 having the cylindrical convex portion are formed. However, the present invention is not limited thereto, and the child nut 2 having the concave portion 6 and the cylindrical shape are provided. It is good also as the parent nut 1 in which the convex part was formed.
図４において、前記実施例１に追加された機構のみについて説明する。
前記凸形状子ナット１’の円筒状凸部３’の外側面に鍔状の突起部１６が突設され、さらに前記親ナット２’の凹部６’の内壁面７’先端に前記凸形状子ナット１’の鍔状の突起部１６を係止して抜け止めするための係止爪１７が形成され、さらに該係止爪１７と前記内壁面７’間に前記鍔状の突起部１６が収容される空間部１８が設けられている
In FIG. 4, only the mechanism added to the first embodiment will be described.
A flange-shaped protrusion 16 is provided on the outer surface of the cylindrical protrusion 3 ′ of the convex child nut 1 ′, and the convex child is provided at the tip of the inner wall surface 7 ′ of the concave portion 6 ′ of the parent nut 2 ′. A locking claw 17 is formed to lock and prevent the hook-shaped protrusion 16 of the nut 1 ′ from coming off. Further, the hook-shaped protrusion 16 is interposed between the locking claw 17 and the inner wall surface 7 ′. A space 18 to be accommodated is provided.
図５において、締結すべき被締結部材１２、１２を貫通して雄ねじ１４が螺刻されたボルト１３に親ナット２’と子ナット１’が螺設されている。
親ナット２’がボルト１３に適切な締め付けトルク値で螺設された後に、子ナット１’がボルト１３にねじ込まれていくと、ねじ込み当初は子ナット１’の円筒状凸部３’が偏心している親ナット２’の内壁面７’に当接してもスリット５が変形していないため、まず凸形状子ナット１’の凸部先端部１５に引き続き前記鍔状の突起部１６が凹形状親ナット２’の前記係止爪１７を通過する。
In FIG. 5, a parent nut 2 ′ and a child nut 1 ′ are screwed to a bolt 13 in which a male screw 14 is threaded through a member to be fastened 12, 12.
After the parent nut 2 'is screwed to the bolt 13 with an appropriate tightening torque value, when the child nut 1' is screwed into the bolt 13, the cylindrical convex portion 3 'of the child nut 1' is unbalanced at the beginning of screwing. Since the slit 5 is not deformed even when it is in contact with the inner wall surface 7 'of the centered parent nut 2', the bowl-shaped protrusion 16 is first concave after the convex tip 15 of the convex child nut 1 '. It passes through the locking claw 17 of the parent nut 2 '.
前記係止爪１７を前記鍔状の突起部１６部分が全て通過した時点で、親ナット２’の偏心している凹部６’の内壁面７’の壁端部に子ナット１’の凸部先端部１５がまず接触し、凸部３’のスリット５が変形してさらに子ナット１’がねじ込まれ、その結果、前記内壁面７’が円筒状の凸部３’を押圧し、該凸部３’の雌ねじ９がボルト１３の雄ねじ１４を押圧することによって、子ナット１’によりボルトの軸線４に対して直角方向の押圧力とボルトの軸線４方向の圧接力が同時に働き、かつ、子ナット１’はその位置で停止する。 When all of the hook-shaped protrusions 16 have passed through the locking claws 17, the tip of the protrusion of the child nut 1 'is placed on the wall end of the inner wall surface 7' of the eccentric recess 6 'of the parent nut 2'. The portion 15 first contacts, the slit 5 of the convex portion 3 ′ is deformed, and the child nut 1 ′ is further screwed. As a result, the inner wall surface 7 ′ presses the cylindrical convex portion 3 ′, and the convex portion When the 3 ′ female screw 9 presses the male screw 14 of the bolt 13, a pressing force in a direction perpendicular to the axis 4 of the bolt and a pressure contact force in the direction of the axis 4 of the bolt act simultaneously by the child nut 1 ′. The nut 1 'stops at that position.
前記子ナット１’が停止した時点で、前記鍔状の突起部１６と係止爪１７との間には僅かな空隙が生じてもよく、又は重ならない位置で停止するようにしてもよい。 When the child nut 1 'is stopped, a slight gap may be formed between the hook-shaped protrusion 16 and the locking claw 17, or may be stopped at a position where it does not overlap.
前記鍔状の突起部１６と係止爪１７が配設されているので、万が一、ナットに多少のゆるみが生じてもナットの脱落防止ができるため、ナット脱落による危険を事前に防止することができる。 Since the hook-shaped protrusion 16 and the locking claw 17 are provided, the nut can be prevented from dropping even if the nut is loosened somewhat, so that it is possible to prevent the danger caused by the nut dropping in advance. it can.
上記以外の構成、作用及び効果については実施例１に準ずる。 Other configurations, operations, and effects are the same as in the first embodiment.
ボルトに螺合して被締結部材を締め付け固定する凸形状と凹形状２個一組のナットからなるゆるみ止めナットにおいて、
前記凸形状ナットは、円筒状の凸部が設けられ、かつ前記円筒状凸部の軸方向に一方の端部が開放されたスリットが１又は２以上開設されてなり、前記凹形状ナットは、前記凸形状のナットの凸部が挿入される円筒状の内壁面を有する凹部が設けられてなり、かつ前記凸形状のナットの凸部又は凹形状のナットの凹部のいずれか一方が、前記ボルトの軸線に対して偏心して形成されてなることを特徴とするゆるみ止めナットであり、
したがって、両ナットの圧接によって生ずる圧接力が増大して軸方向のロッキング効果を得るとともに、前記凸部又は凹部内壁のいずれか一方がボルトの軸線に対して偏心して形成されているためボルトの軸線に対して直角方向の押圧力が働き、かつ円筒状に形成された凸部にスリットが設けてあるためナットの圧接力を高めれば、凹部の内壁に接触している凸部がボルトを押圧するため、さらにボルトの軸線に対して直角方向の押圧力が働き、相乗的にロッキング効果が得られるので、振動、衝撃等が長期間にわたって加わる、移動装置、橋梁等の構造部材の締結用ゆるみ止めナットとして利用可能性がある。
In a locking nut consisting of a set of two convex and concave nuts that are screwed into bolts to fasten and fasten the member to be fastened.
The convex nut is provided with a cylindrical convex portion, and one or more slits having one end opened in the axial direction of the cylindrical convex portion, and the concave nut is A concave portion having a cylindrical inner wall surface into which the convex portion of the convex nut is inserted is provided, and either the convex portion of the convex nut or the concave portion of the concave nut is the bolt. A locking nut characterized by being formed eccentric with respect to the axis of
Therefore, the pressure contact force generated by the pressure contact between both nuts increases to obtain an axial locking effect, and either the convex portion or the concave inner wall is formed eccentrically with respect to the bolt axis, so that the bolt axis If the pressing force of the nut is increased, the convex part in contact with the inner wall of the concave part presses the bolt. Therefore, a pressing force in a direction perpendicular to the axis of the bolt works and a synergistic locking effect is obtained, so that vibration, impact, etc. are applied over a long period of time, and locking devices for fastening structural members such as moving devices and bridges It can be used as a nut.
１、１’：凸形状ナット／子ナット
２、２’：凹形状ナット／親ナット
３、３’：凸部
４：ボルトの軸線
４’：偏心軸
５：スリット
６、６’：凹部
７、７’：内壁面
８：把持部
９：雌ねじ
１０：把持部
１１：雌ねじ
１２：被締結部材
１３：ボルト
１４：雄ねじ
１５：凸部先端部
１６：鍔状の突起部
１７：係止爪
１８：空間部
1, 1 ': Convex nut / child nut 2, 2': Concave nut / parent nut 3, 3 ': Convex part 4: Bolt axis 4': Eccentric shaft 5: Slit 6, 6 ': Concave part 7, 7 ': Inner wall surface 8: Gripping part 9: Female screw 10: Gripping part 11: Female screw 12: Fastened member 13: Bolt 14: Male screw 15: Convex tip 16: Claw-shaped protrusion 17: Locking claw 18: Space
Claims (2)
前記凸形状ナット（１）は、円筒状の凸部（３）が設けられ、かつ前記円筒状凸部（３）の軸方向に一方の端部が開放されたスリット（５）が１又は２以上開設されてなり、
前記凹形状ナット（２）は、前記凸形状のナット（１）の凸部（３）が挿入される円筒状の内壁面（７）を有する凹部（６）が設けられてなり、
かつ前記凸形状ナット（１）の凸部（３）又は凹形状ナット（２）の凹部（６）のいずれか一方が、前記ボルト（１３）の軸線（４）に対して偏心して形成されてなることを特徴とするゆるみ止めナット。 In the locking nut consisting of a pair of nuts (1), (2) having a convex shape and a concave shape, which are screwed into the bolt (13) to fasten and fix the fastened member (12),
The convex nut (1) is provided with a cylindrical convex portion (3) and has one or two slits (5) having one end opened in the axial direction of the cylindrical convex portion (3). It has been established,
The concave nut (2) is provided with a concave portion (6) having a cylindrical inner wall surface (7) into which the convex portion (3) of the convex nut (1) is inserted.
And either one of the convex part (3) of the convex nut (1) or the concave part (6) of the concave nut (2) is formed eccentrically with respect to the axis (4) of the bolt (13). A locking nut characterized by
前記凸形状ナット（１’）は、円筒状の凸部（３’）が設けられ、かつ前記円筒状凸部（３’）の軸方向に一方の端部が開放されたスリット（５）が１又は２以上開設され、さらに前記円筒状凸部（３’）の外側面に鍔状の突起部（１６）が突設されてなり、
前記凹形状ナット（２’）は、前記凸形状ナット（１’）の凸部（３’）が挿入される円筒状の内壁面（７’）を有する凹部（６’）が設けられ、また前記凹部（６’）の内壁面（７’）先端に前記凸形状ナット（１’）の鍔状の突起部（１６）を係止して抜け止めするための係止爪（１７）が形成され、さらに該係止爪（１７）と前記内壁面（７’）間に前記鍔状の突起部（１６）が収容される空間部（１８）が設けられ、
かつ前記凸形状ナット（１’）の凸部（３’）又は凹形状ナット（２’）の凹部（６’）のいずれか一方が、前記ボルト（１３）の軸線（４）に対して偏心して形成されてなることを特徴とするゆるみ止めナット。
In the locking nut comprising a pair of nuts (1 ′) and (2 ′), each of which has a convex shape and a concave shape, which are screwed into the bolt (13) to fasten and fix the fastened member (12)
The convex nut (1 ′) is provided with a cylindrical convex portion (3 ′) and a slit (5) having one end opened in the axial direction of the cylindrical convex portion (3 ′). 1 or 2 or more are established, and a hook-like protrusion (16) is further provided on the outer surface of the cylindrical protrusion (3 ′).
The concave nut (2 ′) is provided with a concave portion (6 ′) having a cylindrical inner wall surface (7 ′) into which the convex portion (3 ′) of the convex nut (1 ′) is inserted. A locking claw (17) for locking the hook-shaped protrusion (16) of the convex nut (1 ') to prevent it from coming off is formed at the tip of the inner wall surface (7') of the concave portion (6 '). And a space (18) in which the hook-shaped protrusion (16) is accommodated is provided between the locking claw (17) and the inner wall surface (7 ′).
In addition, either the convex portion (3 ′) of the convex nut (1 ′) or the concave portion (6 ′) of the concave nut (2 ′) is offset with respect to the axis (4) of the bolt (13). A loosening nut characterized by being formed with a heart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009160537A JP2011017352A (en) | 2009-07-07 | 2009-07-07 | Locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009160537A JP2011017352A (en) | 2009-07-07 | 2009-07-07 | Locking nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2011017352A true JP2011017352A (en) | 2011-01-27 |
Family
ID=43595298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009160537A Pending JP2011017352A (en) | 2009-07-07 | 2009-07-07 | Locking nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2011017352A (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200469132Y1 (en) | 2013-04-30 | 2013-09-23 | 이진숙 | Safe lock nut |
| JP2013217486A (en) * | 2012-04-09 | 2013-10-24 | Tanaka Masae | Lock nut |
| KR101505425B1 (en) * | 2013-03-14 | 2015-03-25 | 삼성중공업 주식회사 | Locking nut |
| DE102015007916A1 (en) * | 2015-06-20 | 2016-12-22 | Amtek Tekfor Holding Gmbh | double nut |
| US9561685B2 (en) | 2012-02-09 | 2017-02-07 | Shimano, Inc. | Force-distributing apparatus for a bicycle wheel spoke |
| JP6083632B1 (en) * | 2016-06-03 | 2017-02-22 | 等 川上 | Locking nut |
| WO2017074369A1 (en) * | 2015-10-29 | 2017-05-04 | Hewlett-Packard Development Company, L.P. | Screw boss structure |
| CN106958580A (en) * | 2017-05-25 | 2017-07-18 | 海盐宇星螺帽有限责任公司 | A kind of stop nut |
| JP2017219117A (en) * | 2016-06-08 | 2017-12-14 | ハードロック工業株式会社 | Pivoting device and attaching device |
| JP2018105367A (en) * | 2016-12-24 | 2018-07-05 | 守弘 和田 | Lock nut |
| CN112112876A (en) * | 2020-10-09 | 2020-12-22 | 浙江赛日机电科技有限公司 | Vibration locknut assembly and machining method thereof |
| CN112601896A (en) * | 2018-08-31 | 2021-04-02 | 哈得螺克工业株式会社 | Screw fastening structure with locking function |
| CN113513527A (en) * | 2020-04-10 | 2021-10-19 | 江苏力达实业科技有限公司 | Self-locking type assembling, locking and fixing connecting piece |
| CN114215840A (en) * | 2022-01-11 | 2022-03-22 | 韦庆龙 | Never-loosening screw |
| CN115234564A (en) * | 2022-08-03 | 2022-10-25 | 管小敏 | Anti-loosening nut |
| WO2023176502A1 (en) * | 2022-03-16 | 2023-09-21 | 日立Astemo株式会社 | Damper and anti-loosening structure |
-
2009
- 2009-07-07 JP JP2009160537A patent/JP2011017352A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9925826B2 (en) | 2012-02-09 | 2018-03-27 | Shimano, Inc. | Force distributing apparatus having a threaded opening for a bicycle wheel spoke |
| US9561685B2 (en) | 2012-02-09 | 2017-02-07 | Shimano, Inc. | Force-distributing apparatus for a bicycle wheel spoke |
| US9962991B2 (en) | 2012-02-09 | 2018-05-08 | Shimano, Inc. | Force distributing apparatus having an eccentric opening for a bicycle wheel spoke |
| US9821597B2 (en) | 2012-02-09 | 2017-11-21 | Shimano, Inc. | Force distributing apparatus having first and second portions for a bicycle wheel spoke |
| JP2013217486A (en) * | 2012-04-09 | 2013-10-24 | Tanaka Masae | Lock nut |
| KR101505425B1 (en) * | 2013-03-14 | 2015-03-25 | 삼성중공업 주식회사 | Locking nut |
| KR200469132Y1 (en) | 2013-04-30 | 2013-09-23 | 이진숙 | Safe lock nut |
| DE102015007916A1 (en) * | 2015-06-20 | 2016-12-22 | Amtek Tekfor Holding Gmbh | double nut |
| US10087977B2 (en) | 2015-06-20 | 2018-10-02 | Neumayer Tekfor Engineering Gmbh | Double nut |
| WO2017074369A1 (en) * | 2015-10-29 | 2017-05-04 | Hewlett-Packard Development Company, L.P. | Screw boss structure |
| JP6083632B1 (en) * | 2016-06-03 | 2017-02-22 | 等 川上 | Locking nut |
| WO2017212962A1 (en) * | 2016-06-08 | 2017-12-14 | ハードロック工業株式会社 | Attachment device |
| JP2017219117A (en) * | 2016-06-08 | 2017-12-14 | ハードロック工業株式会社 | Pivoting device and attaching device |
| KR20180124999A (en) * | 2016-06-08 | 2018-11-21 | 하드 로크 고교 가부시키가이샤 | Installation device |
| KR102082598B1 (en) * | 2016-06-08 | 2020-02-27 | 하드 로크 고교 가부시키가이샤 | Installation device |
| US11022159B2 (en) | 2016-06-08 | 2021-06-01 | Hardlock Industry Co., Ltd. | Attachment device |
| JP2018105367A (en) * | 2016-12-24 | 2018-07-05 | 守弘 和田 | Lock nut |
| CN106958580A (en) * | 2017-05-25 | 2017-07-18 | 海盐宇星螺帽有限责任公司 | A kind of stop nut |
| CN112601896A (en) * | 2018-08-31 | 2021-04-02 | 哈得螺克工业株式会社 | Screw fastening structure with locking function |
| CN112601896B (en) * | 2018-08-31 | 2022-04-08 | 哈得螺克工业株式会社 | Screw fastening structure with locking function |
| CN113513527A (en) * | 2020-04-10 | 2021-10-19 | 江苏力达实业科技有限公司 | Self-locking type assembling, locking and fixing connecting piece |
| CN112112876A (en) * | 2020-10-09 | 2020-12-22 | 浙江赛日机电科技有限公司 | Vibration locknut assembly and machining method thereof |
| CN112112876B (en) * | 2020-10-09 | 2022-05-03 | 浙江腾优科技有限公司 | Vibration locknut assembly and machining method thereof |
| CN114215840A (en) * | 2022-01-11 | 2022-03-22 | 韦庆龙 | Never-loosening screw |
| WO2023176502A1 (en) * | 2022-03-16 | 2023-09-21 | 日立Astemo株式会社 | Damper and anti-loosening structure |
| CN115234564A (en) * | 2022-08-03 | 2022-10-25 | 管小敏 | Anti-loosening nut |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2011017352A (en) | Locking nut | |
| KR101027753B1 (en) | Combination Bolt-Nut Locks | |
| KR20040016369A (en) | Locking fastener | |
| JPH1193933A (en) | Lock nut with nut mating means | |
| US20100186340A1 (en) | Reinforcing Bar Locking Device | |
| US20190376547A1 (en) | Fastening structure | |
| JP2014126159A (en) | Device for preventing loosening of nut | |
| JP2009275727A (en) | Looseness preventing locking device | |
| JP2016125622A (en) | Special double hard-lock nuts | |
| JP6096420B2 (en) | Lock nut | |
| JP5308539B2 (en) | Locking nut | |
| KR101505425B1 (en) | Locking nut | |
| JP2008038947A (en) | Locking mechanism for screw | |
| JP2006220210A (en) | Intervening member, fastener and fastened body | |
| JP2004156775A (en) | Screw fastening structure | |
| JP2017141853A (en) | Method for manufacturing fastener comprising bolt and nut | |
| JP6077168B1 (en) | Fastening member | |
| KR20180043692A (en) | Non-release bolt and nut | |
| JP2012251648A (en) | Screw fastener | |
| CN108443288B (en) | Fastening piece | |
| KR20120132659A (en) | a bolt assembly | |
| GB1593502A (en) | Threaded fasteners | |
| KR20200022696A (en) | Bolt assembly reinforced to loose stopping | |
| JP3199619U (en) | Locking nut | |
| JP2003301829A (en) | Bolt-nut locking structure |