JP2008051269A - Fastening nut - Google Patents

Fastening nut Download PDF

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Publication number
JP2008051269A
JP2008051269A JP2006229580A JP2006229580A JP2008051269A JP 2008051269 A JP2008051269 A JP 2008051269A JP 2006229580 A JP2006229580 A JP 2006229580A JP 2006229580 A JP2006229580 A JP 2006229580A JP 2008051269 A JP2008051269 A JP 2008051269A
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Prior art keywords
nut
washer
fastening
main body
washer part
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Pending
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JP2006229580A
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Japanese (ja)
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Katsuhiko Wakabayashi
克彦 若林
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Hard Lock Industry Co Ltd
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Hard Lock Industry Co Ltd
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Priority to JP2006229580A priority Critical patent/JP2008051269A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening nut capable of exhibiting the large fastening action, and endurable against repetitive use, while being a single nut, for increasing efficiency in fastening work by accumulating internal stress for generating the fastening action in a nut itself in the final stage of fastening. <P>SOLUTION: This nut has a nut body part 3 of arranging a screw hole 2 on an inner peripheral surface, and a washer part 4 integrally molded in a bottom part of the nut body part 3. A bottom surface of the washer part 4 is formed as a recessed surface recessing inward in the radial direction. A recessed groove 5 for allowing the washer part 4 to be elastically deformed in the flattening direction of the bottom surface of the washer part 4 when fastening the nut, is formed in the peripheral direction on an outer peripheral surface between the body part 3 and the washer part 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、緩み止めナットに関する。   The present invention relates to a locking nut.

本願発明者は、Ｕナットやハードロックナット（登録商標）など、代表的な緩み止めナットの発明者でもある。Ｕナットはシングルナットであるため利便性が高いが、十分な緩み止め作用を発揮できない。一方、ハードロックナットは偏心凹凸嵌合する上下ナットのくさび効果によって極めて強力な緩み止めを行い得るものであるが、施工が煩雑であるとともに重量が大きくなるという欠点を有している。   The inventor of the present application is also an inventor of typical locking nuts such as a U nut and a hard lock nut (registered trademark). Since the U nut is a single nut, it is highly convenient, but it cannot exert a sufficient locking action. On the other hand, the hard lock nut can perform extremely strong loosening prevention by the wedge effect of the upper and lower nuts that are fitted with eccentric unevenness, but has the disadvantage that the construction is complicated and the weight is increased.

シングルナットでありながら大きな緩み止め作用を発揮することができ、かつ繰り返し使用にも耐えるものが要望されている中、本願発明者は、特許文献１に記載の緩み止めナットを開発し、製造販売している。
特開平１０−２８６６４９ While there is a demand for a single nut that can exert a large locking function and can withstand repeated use, the present inventor has developed, manufactured and sold the locking nut described in Patent Document 1. is doing.
JP-A-10-286649

上記特許文献１に記載の緩み止めナットも実用性が高いものではあるが、六角ナット部の上部に円錐台形状のかしめ部が存在するためナット全高が比較的高くなり、狭小な場所への取り付け性が良好ではないとともに、ボルトへの螺合初期からトルクが発生するプリベリングトルクナットの一種であるため、ナット締結作業に手間を要する。   Although the locking nut described in Patent Document 1 is also highly practical, the nut overall height is relatively high due to the presence of the frustoconical caulking portion at the top of the hexagonal nut, so that it can be mounted in a narrow place. In addition to being unsatisfactory, it is a kind of pre-leveling torque nut in which torque is generated from the initial stage of screwing to the bolt, and therefore, it takes time to fasten the nut.

そこで、本発明は、締結の最終段階でナット自体に緩み止め作用を生じさせる内部応力が蓄積されるようにすることで締め付け作業の効率化を図ることができるとともに、シングルナットでありながら大きな緩み止め作用を発揮することができ、かつ繰り返し使用にも耐えるものを提供することを目的とする。   Therefore, the present invention can increase the efficiency of tightening work by accumulating internal stress that causes a locking action on the nut itself at the final stage of fastening, and can achieve large loosening while being a single nut. An object of the present invention is to provide a device that can exert a stopping action and can withstand repeated use.

本発明は、上記目的を達成するために、次の技術的手段を講じた。   In order to achieve the above object, the present invention takes the following technical means.

即ち、本発明の緩み止めナットは、内周面にネジ孔が設けられたナット本体部と、該ナット本体部の底部に一体成形された座金部とを備え、該座金部の底面は径方向内方に至るにしたがって凹む凹面となされ、本体部と座金部との間の外周面には、ナット締結時に座金部の底面が平坦となる方向に座金部が弾性変形することを許容する凹溝が周方向に沿って形成されていることを特徴とするものである。これによれば、ナット本体部に一体成形した座金部の底面を凹面として該座金部の上部に凹溝を形成しているので、座金部底面が平坦となる方向に変形可能であり、かかる変形は恰もナット本体部を内周側下方に巻き込むようになるため、変形時にはナット本体部にも大きな内部応力が蓄積されて、これにより大きな緩み止め作用を発揮し得る。   That is, the locking nut of the present invention includes a nut main body portion having a screw hole on the inner peripheral surface, and a washer portion formed integrally with the bottom portion of the nut main body portion, and the bottom surface of the washer portion is in the radial direction. A concave groove that is recessed toward the inside, and on the outer peripheral surface between the main body portion and the washer portion, a concave groove that allows the washer portion to elastically deform in a direction in which the bottom surface of the washer portion becomes flat when the nut is fastened. Is formed along the circumferential direction. According to this, since the bottom surface of the washer part formed integrally with the nut main body part is a concave surface and the concave groove is formed in the upper part of the washer part, it can be deformed in a direction in which the bottom surface of the washer part becomes flat. Since the hook also winds the nut main body part downward on the inner peripheral side, a large internal stress is accumulated in the nut main body part at the time of deformation, which can exert a large locking action.

上記本発明において、座金部の底面の外周縁に対する内周縁の高さは、座金部の外径の２〜５％であることが好ましい。また、前記凹溝は全周にわたって連続して設けられていることが好ましい。   In the said invention, it is preferable that the height of the inner periphery with respect to the outer periphery of the bottom face of a washer part is 2 to 5% of the outer diameter of a washer part. Moreover, it is preferable that the said ditch | groove is provided continuously over the perimeter.

本発明によれば、締結の最終段階でナット自体に緩み止め作用を生じさせる内部応力が蓄積されるようにすることで締め付け作業の効率化を図ることができるとともに、シングルナットでありながら大きな緩み止め作用を発揮することができ、かつ繰り返し使用にも耐えるものを提供することができる。   According to the present invention, it is possible to increase the efficiency of the tightening operation by accumulating internal stress that causes a locking action on the nut itself at the final stage of fastening, and at the same time, it is possible to achieve large looseness while being a single nut. It is possible to provide a device that can exert a stopping action and can withstand repeated use.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１及び図２は本発明の一実施形態に係る緩み止めナット１を示しており、該ナット１は、内周面にネジ孔２が設けられたナット本体部３と、該ナット本体部３の底部に一体成形された座金部４とから主構成されている。ナット本体部３は六角ナットの他、工具を装着可能な種々の形状であってよい。座金部４は全体として平板ドーナツ状を呈しており、座金部４の外径はナット本体の外接円の径よりも大きく、また、座金部４の内径は、ナット本体部３のネジ孔２の外径とほぼ等しい。   1 and 2 show a locking nut 1 according to an embodiment of the present invention. The nut 1 includes a nut main body 3 having a screw hole 2 on an inner peripheral surface, and the nut main body 3. And a washer portion 4 formed integrally with the bottom of the main body. The nut body 3 may have various shapes in which a tool can be mounted in addition to the hexagon nut. The washer part 4 has a flat plate donut shape as a whole, and the outer diameter of the washer part 4 is larger than the diameter of the circumscribed circle of the nut body. It is almost equal to the outer diameter.

座金部４の底面は径方向内方に至るにしたがって凹む凹面となされ、座金部４の底面の外周縁に対する内周縁の高さは、座金部４の外径の２〜５％となされている。一方、座金部４の上面は平坦面に形成されている。   The bottom surface of the washer portion 4 is a concave surface that is recessed inward in the radial direction, and the height of the inner peripheral edge with respect to the outer peripheral edge of the bottom surface of the washer portion 4 is 2 to 5% of the outer diameter of the washer portion 4. . On the other hand, the upper surface of the washer portion 4 is formed as a flat surface.

ナット本体部３と座金部４との間の外周面には、ナット締結時に座金部４の底面が平坦となる方向に座金部４が弾性変形することを許容する凹溝５が周方向に沿って全周にわたって連続して形成されている。この凹溝５が外周に形成された部位はナット本体部３と座金部４とを一体的に結合する結合部６として機能し、座金部４とナット本体部３とが一体となって弾性変形するようにしている。結合部６の外径は、ナット本体部３の外周面の内接円よりも小さく、これにより、六角ナットの一側面よりも径方向内方に凹溝５が形成されるようにしている。   On the outer peripheral surface between the nut main body 3 and the washer portion 4, there is a groove 5 along the circumferential direction that allows the washer portion 4 to elastically deform in a direction in which the bottom surface of the washer portion 4 becomes flat when the nut is fastened. And continuously formed over the entire circumference. The portion where the concave groove 5 is formed on the outer periphery functions as a coupling portion 6 that integrally couples the nut main body portion 3 and the washer portion 4, and the washer portion 4 and the nut main body portion 3 are integrally elastically deformed. Like to do. The outer diameter of the coupling portion 6 is smaller than the inscribed circle on the outer peripheral surface of the nut main body portion 3, whereby the groove 5 is formed radially inward from one side surface of the hexagon nut.

さらに、結合部６の外径における座金部４の底面の高さｈ１よりも、座金部４の底面の内周縁の高さｈ２を高くすることにより、ナット締結の最終段階で結合部６の外径側では上方に押し上げられようとし、一方、結合部６の内径側では下方に押し下げられるように変形するため、僅かな変形量でもナット全体に多大な内部応力が蓄積され、大きな緩み止め効果が発揮される。   Further, the height h2 of the inner peripheral edge of the bottom surface of the washer portion 4 is made higher than the height h1 of the bottom surface of the washer portion 4 at the outer diameter of the coupling portion 6, so On the other hand, the inner side of the coupling portion 6 is deformed so as to be pushed up on the radial side and pushed down on the inner side, so that even a small amount of deformation accumulates a great amount of internal stress on the entire nut, and has a great locking effect. Demonstrated.

本発明のナットはＳ４５ＣやＳ５０Ｃなどの炭素鋼からなるものとし、テンパ加工することによって素材自体に所定の弾性を付与することが好ましいが、従来公知の適宜の材料や製造方法によって製造可能である。その他、本発明は上記実施形態に限定されるものではなく、適宜設計変更できる。   The nut of the present invention is made of carbon steel such as S45C or S50C, and is preferably tempered to give a predetermined elasticity to the material itself, but can be manufactured by any conventionally known appropriate material or manufacturing method. . In addition, the present invention is not limited to the above-described embodiment, and can be appropriately changed in design.

本発明の一実施形態に係る緩み止めナットの四面図であり、（ａ）は平面図、（ｂ）は正面図、（ｃ）は右側面図、（ｄ）は底面図である。It is a four-view figure of the locking nut which concerns on one Embodiment of this invention, (a) is a top view, (b) is a front view, (c) is a right view, (d) is a bottom view. 同ナットの縦断面拡大図である。It is a longitudinal cross-sectional enlarged view of the nut.

Claims (3)

内周面にネジ孔が設けられたナット本体部と、該ナット本体部の底部に一体成形された座金部とを備え、該座金部の底面は径方向内方に至るにしたがって凹む凹面となされ、本体部と座金部との間の外周面には、ナット締結時に座金部の底面が平坦となる方向に座金部が弾性変形することを許容する凹溝が周方向に沿って形成されていることを特徴とする緩み止めナット。   A nut main body part having a screw hole on the inner peripheral surface, and a washer part integrally formed at the bottom of the nut main body part, and the bottom surface of the washer part is a concave surface that is recessed inward in the radial direction. The outer peripheral surface between the main body portion and the washer portion is formed with a concave groove along the circumferential direction that allows the washer portion to elastically deform in a direction in which the bottom surface of the washer portion becomes flat when the nut is fastened. A locking nut characterized by that. 座金部の底面の外周縁に対する内周縁の高さは、座金部の外径の２〜５％であることを特徴とする請求項１に記載の緩み止めナット。   The height of the inner peripheral edge with respect to the outer peripheral edge of the bottom face of the washer part is 2 to 5% of the outer diameter of the washer part. 前記凹溝は全周にわたって連続して設けられていることを特徴とする請求項１又は２に記載の緩み止めナット。   The loosening prevention nut according to claim 1 or 2, wherein said concave groove is provided continuously over the perimeter.
JP2006229580A 2006-08-25 2006-08-25 Fastening nut Pending JP2008051269A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011081928A (en) * 2009-10-05 2011-04-21 Denyo Co Ltd Floodlight
WO2012142212A1 (en) * 2011-04-13 2012-10-18 E. I. Du Pont De Nemours And Company Fastening system for assembling panels of dissimilar materials
WO2012142224A1 (en) * 2011-04-13 2012-10-18 E. I. Du Pont De Nemours And Company Building with panels of dissimilar materials
WO2012142218A1 (en) * 2011-04-13 2012-10-18 E. I. Du Pont De Nemours And Company Wall panels of dissimilar materials
WO2012142239A1 (en) * 2011-04-13 2012-10-18 E. I. Du Pont De Nemours And Company Method for assembling panels of dissimilar materials
JP2014521440A (en) * 2011-07-26 2014-08-28 ペレリン ミルナー コーポレイション Laundry press apparatus and method
JP2014224594A (en) * 2013-05-17 2014-12-04 嘉彦 芋田 Locking nut
KR101769007B1 (en) * 2016-11-30 2017-08-18 주식회사 동성앙카 Looseproof nut integrated with washer
CN109372881A (en) * 2018-12-20 2019-02-22 浙江安盛汽车零部件有限公司 A kind of retaining flange nut
CN111075822A (en) * 2020-01-21 2020-04-28 上海球明标准件有限公司 High-strength tensile nut for connecting and fastening

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5296168U (en) * 1976-01-14 1977-07-19
WO2001014753A1 (en) * 1999-08-25 2001-03-01 Hard Lock Kogyo Co. Lock nut

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5296168U (en) * 1976-01-14 1977-07-19
WO2001014753A1 (en) * 1999-08-25 2001-03-01 Hard Lock Kogyo Co. Lock nut

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011081928A (en) * 2009-10-05 2011-04-21 Denyo Co Ltd Floodlight
US8959748B2 (en) 2011-04-13 2015-02-24 E I Du Pont De Nemours And Company Method for assembling panels of dissimilar materials
WO2012142212A1 (en) * 2011-04-13 2012-10-18 E. I. Du Pont De Nemours And Company Fastening system for assembling panels of dissimilar materials
WO2012142224A1 (en) * 2011-04-13 2012-10-18 E. I. Du Pont De Nemours And Company Building with panels of dissimilar materials
WO2012142218A1 (en) * 2011-04-13 2012-10-18 E. I. Du Pont De Nemours And Company Wall panels of dissimilar materials
WO2012142239A1 (en) * 2011-04-13 2012-10-18 E. I. Du Pont De Nemours And Company Method for assembling panels of dissimilar materials
US8684648B2 (en) 2011-04-13 2014-04-01 E I Du Pont De Nemours And Company Fastening system for assembling panels of dissimilar materials
JP2014521440A (en) * 2011-07-26 2014-08-28 ペレリン ミルナー コーポレイション Laundry press apparatus and method
US9920990B2 (en) 2011-07-26 2018-03-20 Pellerin Milnor Corporation Laundry press apparatus and method
JP2014224594A (en) * 2013-05-17 2014-12-04 嘉彦 芋田 Locking nut
KR101769007B1 (en) * 2016-11-30 2017-08-18 주식회사 동성앙카 Looseproof nut integrated with washer
CN109372881A (en) * 2018-12-20 2019-02-22 浙江安盛汽车零部件有限公司 A kind of retaining flange nut
CN111075822A (en) * 2020-01-21 2020-04-28 上海球明标准件有限公司 High-strength tensile nut for connecting and fastening

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