JP2013221617A - Lock nut - Google Patents

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Publication number
JP2013221617A
JP2013221617A JP2012106243A JP2012106243A JP2013221617A JP 2013221617 A JP2013221617 A JP 2013221617A JP 2012106243 A JP2012106243 A JP 2012106243A JP 2012106243 A JP2012106243 A JP 2012106243A JP 2013221617 A JP2013221617 A JP 2013221617A
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Prior art keywords
screw hole
fastening
fastening screw
lock nut
nut
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JP2012106243A
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Japanese (ja)
Inventor
Koji Iijima
貢二 飯島
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IIJIMA SEISAKUSHO KK
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IIJIMA SEISAKUSHO KK
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Priority to JP2012106243A priority Critical patent/JP2013221617A/en
Publication of JP2013221617A publication Critical patent/JP2013221617A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a lock nut operated easily and high in fastening power, and moreover, capable of fastening effectively even singularly or in a combination of a plurality of the nuts.SOLUTION: A lock nut in which a screw hole is passed through a center in an axial direction and a polygonal part is formed in the outer periphery, includes a cut formed in a horizontal direction of the polygonal part, a fastening screw hole bored in the horizontal direction of the cut, and a fastening screw screwed in the fastening screw hole. The fastening screw hole is passed through to the screw hole in the center in the axial direction, and is formed in a pointed form in the vicinity of the screw hole. Moreover, the cut is opened in a side direction by fastening the fastening screw.

Description

本発明は、締付け力が高く、単品でも、または複数組み合わせても効果的にボルトに締結することができるロックナットに関する。  The present invention relates to a lock nut that has a high tightening force and can be effectively fastened to a bolt even if it is a single product or a combination of two or more.

一般的に、二つ以上の部材を結合するにはボルトとナットが使用される。部材を結合するには、部材の貫通孔にボルトを挿入させ、ボルトの先端よりナットを螺着させてナットを締め付ける結合させる。  Generally, bolts and nuts are used to connect two or more members. To join the members, a bolt is inserted into the through hole of the member, and a nut is screwed from the tip of the bolt and the nut is tightened.

しかし、時間が経につれて、振動の発生や部材の変形によりナットが緩み、締付効力が低下するという問題が発生する。そのため、定期的に検査を行いナットの再締付を実施しなければならなかった。  However, as time goes on, there is a problem that the nut is loosened due to the occurrence of vibration or deformation of the member, and the tightening effect is lowered. Therefore, it was necessary to perform regular inspections and retighten the nuts.

それらの課題を解決する従来技術として、的確な締め付けトルクでもってナットの締め付けを容易に且つ確実に行うことができ、かつ、締め付け後はいたずら等により容易に取り外すことのできないようにする取り外し防止機能を有するナット、並びに、緩み止め特殊ダブルナットがある(例えば特許文献1参照)。
上掲特許文献1の取り外し防止機能を有するナット、並びに、緩み止め特殊ダブルナットは、ネジ孔が軸方向に貫通して軸中央部に形成されたナット本体と、該ナット本体の軸方向上部に設けられた回転工具係合部と、ナット本体と回転工具係合部とを連結する連結部とを備えて一体成形され、回転工具係合部の軸中央部にネジ孔の径よりも大きな径を有する空洞を形成し、回転工具係合部に係合した回転工具により所定トルクを超える締め付けトルクで回転工具係合部を締結したときに連結部が破断して、これによりナット本体から回転工具係合部が分離されてなることを特徴とするものである。
特開2007−40344号公報
As a conventional technology that solves these problems, the nut can be easily and reliably tightened with an accurate tightening torque, and it is not possible to easily remove the nut after it has been tightened. And a special double nut that prevents loosening (see, for example, Patent Document 1).
The nut having the removal preventing function and the special double nut for preventing loosening disclosed in the above-mentioned Patent Document 1 include a nut body formed at the center of the shaft with a screw hole penetrating in the axial direction, and an axially upper portion of the nut body. The rotating tool engaging portion provided and a connecting portion for connecting the nut body and the rotating tool engaging portion are integrally formed, and the diameter of the rotating tool engaging portion is larger than the diameter of the screw hole. When the rotary tool engaging portion is fastened with a tightening torque exceeding a predetermined torque by the rotary tool engaged with the rotary tool engaging portion, the connecting portion is broken, thereby causing the rotary tool to rotate from the nut body. The engaging portion is separated.
JP 2007-40344 A

しかしながら、上掲特許文献1の取り外し防止機能を有するナット、並びに、緩み止め特殊ダブルナットは、部品点数が多くなりコスト高に繋がるという欠点があった。また、ナット単品では締め付け効果を発揮することができなかった。  However, the nut having the removal preventing function and the special double nut for preventing loosening described in the above-mentioned Patent Document 1 have a drawback that the number of parts increases and the cost increases. In addition, the nut alone could not exert the tightening effect.

そこで本発明は上記の点に鑑み、操作が容易で締付け力が高く、単品でも、または複数のナットを組み合わせても効果的に締結することができるロックナットを提供することにある。  In view of the above, the present invention is to provide a lock nut that is easy to operate and has a high tightening force, and can be effectively tightened even with a single product or a combination of a plurality of nuts.

解決を解決するための手段Means for solving the solution

上記課題を解決するために本発明のロックナットは、ネジ孔が軸方向中央に貫通され、外周に多角形部が形成されたナットにおいて、前記多角形部の水平方向に形成された切込と、前記切込の水平方向に穿孔された締結ネジ孔と、締結ネジ孔に螺着される締結ネジとを備えることを特徴とする。  In order to solve the above problems, the lock nut of the present invention is a nut in which a screw hole is penetrated in the center in the axial direction and a polygonal part is formed on the outer periphery, and a notch formed in the horizontal direction of the polygonal part. A fastening screw hole drilled in the horizontal direction of the cut and a fastening screw screwed into the fastening screw hole are provided.

また前記締結ネジ孔は、軸方向中央のネジ孔まで貫通され、ネジ孔近傍が先尖状に形成されている。  The fastening screw hole penetrates to the screw hole at the center in the axial direction, and the vicinity of the screw hole is formed in a pointed shape.

さらに前記切込は、締結ネジを締め付けることにより側面方向に開口される。  Furthermore, the said notch is opened to a side surface direction by tightening a fastening screw.

発明の効果Effect of the invention

多角形部の水平方向に切込を形成するとともに、前記切込の水平方向に締結ネジ孔を穿孔し、かかる締結ネジ孔に締結ネジを螺着させることにより、締結ネジを締め付けた際に切込が側面方向に開口され、ナットのネジ部がボルトのネジ部に強固に螺着され、締結力を向上させることができる。  A cut is formed in the horizontal direction of the polygonal part, a fastening screw hole is drilled in the horizontal direction of the cut, and a fastening screw is screwed into the fastening screw hole so that the cutting is performed when the fastening screw is tightened. The insert is opened in the lateral direction, and the screw portion of the nut is firmly screwed into the screw portion of the bolt, so that the fastening force can be improved.

また、本発明のロックナットは、単品でも優れた締結力を発揮するが、汎用のナットを組み合わせることで、より高い締結力を得ることができる。  Moreover, although the lock nut of this invention exhibits the fastening force outstanding also with single item, a higher fastening force can be acquired by combining a general purpose nut.

本発明におけるロックナットの全体斜視図である。It is a whole perspective view of the lock nut in the present invention. 前記ロックナットに締結ネジを装着した状態の斜視図である。It is a perspective view in the state where a fastening screw was attached to the lock nut. 前記ロックナットの水平方向断面図であるIt is a horizontal direction sectional view of the lock nut. 前記ロックナットの締結状態を示す断面図である。It is sectional drawing which shows the fastening state of the said lock nut. 締結ネジを締め付けた状態の断面図である。It is sectional drawing of the state which fastened the fastening screw. ロックナットをボルトに螺着させた状態の斜視図である。It is a perspective view of the state where the lock nut was screwed onto the bolt.

本発明のロックナットは、操作が容易で締付け力が高く、単品でも、または複数のナットを組み合わせても効果的に締結することができることを特徴とする。
以下、本発明のロックナットにおける実施の形態を図面に基づいて説明する。
The lock nut of the present invention is characterized in that it is easy to operate and has a high tightening force, and can be effectively fastened by a single item or by combining a plurality of nuts.
Embodiments of the lock nut of the present invention will be described below with reference to the drawings.

図示するロックナット1は、ネジ孔2が軸方向中央に貫通され、外周に多角形部3が形成されている。また特に、前記多角形部3の略中央水平方向には、切込4が形成されている。  In the illustrated lock nut 1, a screw hole 2 is penetrated in the center in the axial direction, and a polygonal portion 3 is formed on the outer periphery. Further, in particular, a cut 4 is formed in a substantially central horizontal direction of the polygonal portion 3.

前記切込4は、図3に示すように、連結部5を介して多角形部3およびネジ孔2に亘り広範囲に形成されている。また、前記切込4の水平方向であって、前記連結部5の対向する箇所には締結ネジ孔6が穿孔されている。  As shown in FIG. 3, the notch 4 is formed over a wide range across the polygonal portion 3 and the screw hole 2 via the connecting portion 5. In addition, a fastening screw hole 6 is drilled in the horizontal direction of the notch 4 and at a location where the connecting portion 5 faces.

また、前記締結ネジ孔6には締結ネジ10が螺着される。締結ネジ10は前記締結ネジ孔6内に螺合され、本発明のロックナット1をボルト20に強靭に締結するものである。また締結ネジ10の先方には、六角レンチ等の締付工具が挿入される凹部11が形成されている。  A fastening screw 10 is screwed into the fastening screw hole 6. The fastening screw 10 is screwed into the fastening screw hole 6 to firmly fasten the lock nut 1 of the present invention to the bolt 20. Further, a concave portion 11 into which a fastening tool such as a hexagon wrench is inserted is formed at the tip of the fastening screw 10.

また特に、図3に示すように、前記締結ネジ孔6は軸方向中央のネジ孔2まで貫通されている。前記締結ネジ孔6の外周方向7は広口状に形成されており、ネジ部8を介してネジ孔2の内周近傍9は先尖状に形成されている。  In particular, as shown in FIG. 3, the fastening screw hole 6 is penetrated to the screw hole 2 at the center in the axial direction. An outer peripheral direction 7 of the fastening screw hole 6 is formed in a wide mouth shape, and an inner peripheral vicinity 9 of the screw hole 2 is formed in a pointed shape via a screw portion 8.

前記締結ネジ孔6を上述の構造とすることで、図4の(a)に示すように、締結ネジ孔6に締結ネジ10を装着させ、(b)に示すように、締結ネジ10を締め付けることにより、締結ネジ10の先部が先尖状の内周近傍9にネジ込まれ、切込4からロックナット1の側面は開口される。そのため、ロックナット1のネジ部がボルト20のネジ部21に強固に螺合され、締結力を向上させることができる。  Since the fastening screw hole 6 has the above-described structure, the fastening screw 10 is attached to the fastening screw hole 6 as shown in FIG. 4A, and the fastening screw 10 is tightened as shown in FIG. 4B. As a result, the tip of the fastening screw 10 is screwed into the tip-like inner peripheral vicinity 9, and the side surface of the lock nut 1 is opened from the notch 4. Therefore, the screw portion of the lock nut 1 is firmly screwed into the screw portion 21 of the bolt 20 and the fastening force can be improved.

本発明のロックナット1は、図6に示すように、ボルト20にロックナット1を螺着させて締結ネジ10を締め付けることで、ボルト20に強靭に締結させることができる。  As shown in FIG. 6, the lock nut 1 of the present invention can be firmly fastened to the bolt 20 by screwing the lock nut 1 onto the bolt 20 and fastening the fastening screw 10.

なお、前記ロックナット1は、単品でも優れた締結力を発揮するが、汎用のナットを組み合わせることで、締結力をより一層強く高めることができる。  In addition, although the said lock nut 1 exhibits the outstanding fastening force even if it is single-piece | unit, it can raise fastening force still more strongly by combining a general purpose nut.

1 ロックナット
2 ネジ孔
3 多角形部
4 切込
5 連結部
6 締結ネジ孔
7 外周近傍
8 ネジ部
9 内周近傍
10 締結ネジ
11 凹部
20 ボルト
21 ネジ部
DESCRIPTION OF SYMBOLS 1 Lock nut 2 Screw hole 3 Polygon part 4 Notch 5 Connection part 6 Fastening screw hole 7 Near outer periphery 8 Screw part 9 Inner peripheral vicinity 10 Fastening screw 11 Recess 20 Bolt 21 Screw part

Claims (3)

ネジ孔が軸方向中央に貫通され、外周に多角形部が形成されたロックナットにおいて、前記多角形部の水平方向に形成された切込と、前記切込の水平方向に穿孔された締結ネジ孔と、締結ネジ孔に螺着される締結ネジとを備えることを特徴とするロックナット。  In a lock nut in which a screw hole is penetrated in the center in the axial direction and a polygonal part is formed on the outer periphery, a cut formed in the horizontal direction of the polygonal part and a fastening screw drilled in the horizontal direction of the cut A lock nut comprising: a hole; and a fastening screw screwed into the fastening screw hole. 前記締結ネジ孔は軸方向中央のネジ孔まで貫通され、ネジ孔近傍が先尖状に形成されている請求項1記載のロックナット。  The lock nut according to claim 1, wherein the fastening screw hole is penetrated to a screw hole at a center in an axial direction, and a vicinity of the screw hole is formed in a pointed shape. 前記切込は、締結ネジを締め付けることにより側面方向に開口される請求項1または2に記載のロックナット。  The lock nut according to claim 1 or 2, wherein the cut is opened in a side surface direction by tightening a fastening screw.
JP2012106243A 2012-04-16 2012-04-16 Lock nut Pending JP2013221617A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106050877A (en) * 2016-06-27 2016-10-26 无锡迪奥机械有限公司 Nut with fastening bolt
CN107435678A (en) * 2017-08-28 2017-12-05 上海勘测设计研究院有限公司 Locking gear and its application method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114550A (en) * 1975-04-01 1976-10-08 Mitachi Onkyo Seisakusho:Kk Method for fixing adjusting nut, and lock nut
JPH02146207U (en) * 1989-05-17 1990-12-12
JP2006071063A (en) * 2004-09-06 2006-03-16 Jtekt Corp Roller bearing
JP2007315524A (en) * 2006-05-26 2007-12-06 Koyo Kizai Kk Lock nut

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114550A (en) * 1975-04-01 1976-10-08 Mitachi Onkyo Seisakusho:Kk Method for fixing adjusting nut, and lock nut
JPH02146207U (en) * 1989-05-17 1990-12-12
JP2006071063A (en) * 2004-09-06 2006-03-16 Jtekt Corp Roller bearing
JP2007315524A (en) * 2006-05-26 2007-12-06 Koyo Kizai Kk Lock nut

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106050877A (en) * 2016-06-27 2016-10-26 无锡迪奥机械有限公司 Nut with fastening bolt
CN107435678A (en) * 2017-08-28 2017-12-05 上海勘测设计研究院有限公司 Locking gear and its application method
CN107435678B (en) * 2017-08-28 2023-02-28 上海勘测设计研究院有限公司 Anti-loosening mechanism and using method thereof

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