JP2003113826A - Fastening nut - Google Patents
Fastening nutInfo
- Publication number
- JP2003113826A JP2003113826A JP2001307894A JP2001307894A JP2003113826A JP 2003113826 A JP2003113826 A JP 2003113826A JP 2001307894 A JP2001307894 A JP 2001307894A JP 2001307894 A JP2001307894 A JP 2001307894A JP 2003113826 A JP2003113826 A JP 2003113826A
- Authority
- JP
- Japan
- Prior art keywords
- torque
- inner member
- outer member
- fastening
- tightening nut
- 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
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ボルトなどと組合
わせて締結箇所などを緩みなく締付けることができる締
付けナットに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening nut which can be used in combination with a bolt or the like to tighten a tightened portion without loosening.
【０００２】[0002]
【従来の技術】従来から、種々の対象物の固定などにね
じによる締結が広く用いられている。ボルトとナットと
の組合わせに代表されるそのような締結部分は、締付け
方向と緩め方向とを、作用させるトルクの方向に応じて
容易に切り換えることができる。ただし、一旦締付けた
後でも、経年変化による材料の伸縮や歪み、振動などで
締結部分が緩みやすい。そのため種々の緩み防止策が考
えられ、実行されている。2. Description of the Related Art Conventionally, screw fastening has been widely used for fixing various objects. Such a fastening portion represented by a combination of a bolt and a nut can be easily switched between the tightening direction and the loosening direction depending on the direction of the torque to be applied. However, even after once tightened, the tightened portion is likely to loosen due to expansion and contraction or distortion of the material due to aging, vibration, and the like. Therefore, various loosening prevention measures have been considered and implemented.
【０００３】また締結部分では、外側から作用させるト
ルクに比較して大きな締結力が発生する。ボルトやナッ
トの材料が耐えうる締結力を超えると、機械的な破損が
生じたり、経年変化での締結力低下が生じやすくなった
りするおそれがある。締結力が不足すると、締結箇所で
対象物が充分に固定されなかったり、締結が緩みやすく
なったりしやすい。このため、締結時には、適正な締結
力を発生させるように、作用させるトルクの管理を行う
必要がある。トルクの管理には、管理範囲を超えるよう
な大きなトルクは伝達しないような機構や、トルク測定
機能付の専用工具としてのトルクレンチなどが用いられ
る。Further, a large fastening force is generated at the fastening portion as compared with the torque applied from the outside. If the material of the bolts or nuts exceeds the fastening force that they can withstand, mechanical damage may occur, or the fastening force may easily decrease due to aging. If the fastening force is insufficient, the object is not sufficiently fixed at the fastening point, or the fastening is likely to loosen. Therefore, at the time of fastening, it is necessary to manage the applied torque so as to generate an appropriate fastening force. For the torque management, a mechanism that does not transmit a large torque exceeding the management range, a torque wrench as a dedicated tool with a torque measuring function, or the like is used.
【０００４】[0004]
【発明が解決しようとする課題】従来からのトルク管理
では、トルクレンチなどの専用工具が使用される。トル
クの管理にトルクレンチを用いると、トルクレンチ自
体、管理するトルクの範囲や精度が保証されるように、
定期的な検査なども必要となる。In the conventional torque management, a dedicated tool such as a torque wrench is used. If a torque wrench is used to manage the torque, the torque wrench itself and the range and accuracy of the managed torque are guaranteed.
Regular inspections are also required.
【０００５】また、締結部分の緩み止めには、ばね座
金、ダブルナット、ロックペイント、割りピンなど、単
に締結部分にナットを締付けるだけではなく、締結部分
に緩み止め用の部材を用いたり、加工を施したりする必
要がある。すなわち、締結作業時に、緩み止めを目的と
する作業が付加されてしまう。確実な緩み止めを必要と
する締結作業は、たとえば野外の送電線用鉄塔など、作
業が困難な場所で行う必要がある。そのような場所での
作業では、余分な作業は大きな負担となる。Further, in order to prevent the fastening portion from loosening, a spring washer, a double nut, a lock paint, a split pin, etc. are not simply tightened on the fastening portion, but a member for fastening the fastening portion is used or processed. Need to be given. That is, a work for preventing loosening is added during the fastening work. Fastening work that requires reliable loosening prevention needs to be performed in places where it is difficult to perform work, such as outdoor power towers for power transmission lines. When working in such a place, extra work becomes a heavy burden.
【０００６】さらに、軸などの途中に中間停止や他の装
置を取り付けようとしても、簡単な機構で実現すること
はできない。Further, even if an intermediate stop or another device is attached midway along the shaft or the like, it cannot be realized by a simple mechanism.
【０００７】本発明の目的は、締付けトルクの管理も容
易かつ確実に行うことが可能な締付ナットを提供するこ
とである。An object of the present invention is to provide a tightening nut which enables easy and reliable management of tightening torque.
【０００８】また本発明の目的は、締結後の緩み止めも
確実に行うことが可能な締付ナットを提供することであ
る。Another object of the present invention is to provide a tightening nut which can surely prevent loosening after tightening.
【０００９】さらに本発明の目的は、途中で外周を締付
けて固定することができる締付ナットを提供することで
ある。A further object of the present invention is to provide a tightening nut which can be fixed by tightening the outer circumference on the way.
【００１０】[0010]
【課題を解決するための手段】本発明は、トルクを作用
させる締結工具に適合する外形を有する締付ナットであ
って、該外形が外周部分に形成される外側部材と、大略
的に円筒状で、内周側にはねじ軸と螺合する雌ねじ部が
形成され、外周側で外側部材と螺合する内側部材と、内
側部材と外側部材との間を連結して、外側部材から内側
部材にトルクを伝達し、予め定める基準トルクを越える
トルクが印加されると折損するトルク管理ピンとを含
み、内側部材の外周側には、外側部材で螺合状態を締付
ける軸線方向に向って径が拡大するように、テーパがつ
けられた雄ねじ部が設けられていることを特徴とする締
付ナットである。SUMMARY OF THE INVENTION The present invention is a tightening nut having an outer shape adapted to a torque-applying fastening tool, wherein the outer shape has an outer member formed in an outer peripheral portion, and a generally cylindrical shape. At the inner peripheral side, a female screw portion that is screwed with the screw shaft is formed, and the inner member that is screwed with the outer member on the outer peripheral side and the inner member and the outer member are connected to each other. Torque management pin that transmits torque to the inner member and breaks when a torque exceeding a predetermined reference torque is applied.On the outer peripheral side of the inner member, the diameter increases in the axial direction to tighten the screwed state with the outer member. As described above, the tightening nut is characterized in that a tapered male screw portion is provided.
【００１１】本発明に従えば、内側部材の雌ねじ部をボ
ルト軸などに螺合させ、スパナなどの一般的な締付け工
具で締付けトルクを外側部材に作用させると、トルクは
トルク管理ピンを介して内側部材に伝達され、ボルト軸
などに対する螺合部分の締結を進めることができる。締
結力が大きくなって、トルク管理ピンを介して伝達され
るトルクが基準トルクを越えると、トルク管理ピンが折
損し、外側部材は内側部材に対して締付けを行うように
変化する。外側部材と内側部材との間の螺合部分には径
が増大するテーパが設けられているので、直ちに、螺合
が進まなくなるので、適正な締結が得られていることを
容易に知ることができる。一般的な締結工具を用いて、
単に外側部材を締結する作業を行うだけで、適正なトル
ク管理を図ることができ、従来のようなトルク管理は不
要となる。According to the present invention, when the female screw portion of the inner member is screwed onto the bolt shaft and the tightening torque is applied to the outer member with a general tightening tool such as a spanner, the torque is applied via the torque management pin. It is transmitted to the inner member, and the fastening of the screwed portion to the bolt shaft or the like can be advanced. When the fastening force becomes large and the torque transmitted through the torque management pin exceeds the reference torque, the torque management pin breaks and the outer member changes so as to tighten the inner member. Since the taper with an increased diameter is provided in the screwed portion between the outer member and the inner member, the screwing does not proceed immediately, so it is easy to know that proper fastening has been achieved. it can. Using a general fastening tool,
Appropriate torque management can be achieved simply by performing the work of fastening the outer member, and the conventional torque management is not required.
【００１２】また本発明で、前記内側部材には、周方向
に沿って切断箇所が設けられることを特徴とする。Further, according to the present invention, the inner member is provided with a cut portion along a circumferential direction.
【００１３】本発明に従えば、外側部材に締結工具でト
ルクを作用させると、外側部材と内側部材との間の螺合
部分での締結が軸線方向に進み、外側部材は径が増大す
る内側部材と螺合するようになる。外側部材と内側部材
との間には、テーパに基づく径方向の応力も作用し、締
結部分が緩みにくくなる。単に外側部材を締結する作業
を行うだけで緩み止めを図ることができる。According to the present invention, when torque is applied to the outer member by the fastening tool, the fastening at the threaded portion between the outer member and the inner member proceeds in the axial direction, and the outer member has an inner diameter increasing. It comes to screw with a member. A radial stress due to the taper also acts between the outer member and the inner member, and the fastening portion is less likely to loosen. It is possible to prevent the loosening by simply performing the work of fastening the outer member.
【００１４】さらに本発明は、トルクを作用させる締結
工具に適合する外形を有する締付ナットであって、該外
形が外周部分に形成される外側部材と、大略的に円筒状
で、内周側には軸が挿入され、外周側で外側部材と螺合
する内側部材とを含み、内側部材には、周方向に沿って
切断箇所が設けられ、内側部材の外周側には、外側部材
で螺合状態を締付ける軸線方向に向って径が拡大するよ
うに、テーパがつけられた雄ねじ部が設けられているこ
とを特徴とする締付ナットである。Further, the present invention is a tightening nut having an outer shape adapted to a fastening tool for applying a torque, wherein the outer shape has an outer member formed in an outer peripheral portion, a substantially cylindrical shape, and an inner peripheral side. A shaft is inserted into the inner member, and the inner member includes an inner member that is screwed onto the outer member on the outer peripheral side. The inner member is provided with a cutting portion along the circumferential direction. The tightening nut is characterized in that a tapered external thread portion is provided so that the diameter increases in the axial direction for tightening the combined state.
【００１５】本発明に従えば、内側部材を保持しながら
外側部材に締結工具でトルクを作用させると、外側部材
と内側部材との間の螺合部分での締結が軸線方向に進
み、外側部材は径が増大する内側部材を径方向の内方に
押圧するようになる。内側部材には周方向に切断箇所が
設けられているので、軸を外周側から押圧し、軸に対し
て内側部材を固定することができる。外側部材と内側部
材との間には、テーパに基づく径方向の応力も作用し、
締結部分が緩みにくくなる。単に外側部材を締結する作
業を行うだけで、軸に対する固定を行うことができる。
軸がねじ軸であれば、内側部材の内周側に適合する雌ね
じを形成しておくことによって、外側部材と内側部材と
の間の螺合箇所と、内側部材と軸との間の螺合箇所とで
ダブルナットによる緩み止めを図ることができる。軸が
ねじ軸ではなく、外周が平滑なシャフトであれば、軸の
途中の任意の位置で止めることができるカラーとして機
能させることができる。According to the present invention, when torque is applied to the outer member while holding the inner member with the fastening tool, fastening at the threaded portion between the outer member and the inner member proceeds in the axial direction, and the outer member Presses the inner member of increasing diameter inward in the radial direction. Since the inner member is provided with the cut portion in the circumferential direction, the shaft can be pressed from the outer peripheral side to fix the inner member to the shaft. A radial stress due to the taper also acts between the outer member and the inner member,
The fastening part is less likely to loosen. The fixing to the shaft can be performed simply by performing the work of fastening the outer member.
If the shaft is a screw shaft, by forming a female screw that fits on the inner peripheral side of the inner member, the screwing point between the outer member and the inner member and the screwing between the inner member and the shaft are performed. It is possible to prevent loosening with a double nut in some places. If the shaft is not a screw shaft but a shaft having a smooth outer circumference, it can function as a collar that can be stopped at any position in the middle of the shaft.
【００１６】[0016]
【発明の実施の形態】図１は、本発明の実施の一形態で
ある締付ナット１の概略的な構成を示す。図１（ａ）は
正面断面視、図１（ｂ）は平面視、図１（ｃ）は底面視
した状態をそれぞれ示す。本実施形態の締付ナット１
は、トルクを作用させる締結工具に適合する外形を有す
る外側部材２と、大略的に円筒状で、内周側にはねじ軸
と螺合する雌ねじ部３が形成され、外周側で外側部材２
と螺合する内側部材４と、内側部材４と外側部材２との
間を連結して、外側部材２から内側部材４にトルクを伝
達し、予め定める基準トルクを越えるトルクが印加され
ると折損するトルク管理ピン５とを含む。内側部材４の
外周側には、外側部材２で螺合状態を締付ける軸線方向
６に向って径が拡大するように、テーパがつけられた雄
ねじ部７が設けられている。1 shows a schematic structure of a tightening nut 1 according to an embodiment of the present invention. 1A is a front sectional view, FIG. 1B is a plan view, and FIG. 1C is a bottom view. Tightening nut 1 of the present embodiment
Is an outer member 2 having an outer shape that is compatible with a fastening tool that applies a torque, a substantially cylindrical shape, and an internal thread portion 3 that is screwed with a screw shaft is formed on the inner peripheral side, and the outer member 2 is formed on the outer peripheral side.
The inner member 4 screwed with the inner member 4 and the inner member 4 and the outer member 2 are connected to each other, torque is transmitted from the outer member 2 to the inner member 4, and breakage occurs when a torque exceeding a predetermined reference torque is applied. And a torque management pin 5 for controlling the torque. On the outer peripheral side of the inner member 4, there is provided a male screw portion 7 that is tapered so that its diameter increases in the axial direction 6 that tightens the screwed state with the outer member 2.
【００１７】軸線方向６に関し、雄ねじ部７の径が減少
する方向の端部には、周溝８が形成され、止め輪９が装
着されている。止め輪９の外径は、外側部材２のねじ孔
の内径よりも大きい。このため、外側部材２を内側部材
４に対して緩めても、外側部材２が脱落することはな
い。なお、後述するようにトルクによって折損するまで
は、外側部材２と内側部材４との間にはトルク管理ピン
５が設けられ、機械的に連結しているので、外側部材２
と内側部材４とが相対的に変位することはない。With respect to the axial direction 6, a peripheral groove 8 is formed at an end portion in the direction in which the diameter of the male screw portion 7 decreases, and a retaining ring 9 is attached to the peripheral groove 8. The outer diameter of the retaining ring 9 is larger than the inner diameter of the screw hole of the outer member 2. Therefore, even if the outer member 2 is loosened with respect to the inner member 4, the outer member 2 does not fall off. As will be described later, a torque management pin 5 is provided between the outer member 2 and the inner member 4 and mechanically connected to each other until the outer member 2 is broken by the torque, as described below.
And the inner member 4 are not relatively displaced.
【００１８】本実施形態では、内側部材４の雌ねじ部３
をボルト軸などに螺合させ、スパナなどの一般的な締付
け工具で締付けトルクを外側部材２に作用させると、ト
ルクはトルク管理ピン５を介して内側部材４に伝達さ
れ、ボルト軸などに対する螺合部分の締結を進めること
ができる。外側部材２や内側部材４は、従来からナット
などの材料として使用されている鉄系などの金属材料を
用いる。トルク管理ピン５は、たとえば黄銅系など、外
側部材２や内側部材４の材料に比較して低強度の材料を
用い、締結力が大きくなって、トルク管理ピン５を介し
て伝達されるトルクが基準トルクを越えると、トルク管
理ピン５が折損するようにしておく。In this embodiment, the female screw portion 3 of the inner member 4
When the tightening torque is applied to the outer member 2 with a general tightening tool such as a spanner, the torque is transmitted to the inner member 4 via the torque management pin 5 and screwed to the bolt shaft. It is possible to proceed with the conclusion of joint parts. The outer member 2 and the inner member 4 are made of a metallic material such as an iron-based material that has been conventionally used as a material for nuts and the like. The torque management pin 5 is made of a material having a lower strength than the materials of the outer member 2 and the inner member 4, such as brass, and the tightening force is increased so that the torque transmitted through the torque management pin 5 is increased. When the reference torque is exceeded, the torque management pin 5 is broken.
【００１９】トルク管理ピン５が折れて、トルクの直接
の伝達がなくなると、外側部材２は内側部材４に対して
締付けを行うように変化する。スパナなどで締付けトル
クを与えていると、トルク管理ピン５の折れたことを、
ショックとして感じることができる。外側部材２と内側
部材４との間の螺合部分には径が増大するテーパが設け
られているので、直ちに、螺合が進まなくなり、適正な
締結が得られていることを容易に知ることができる。従
来のようなトルク管理は不要となる。When the torque management pin 5 is broken and the torque is no longer directly transmitted, the outer member 2 changes to tighten the inner member 4. If tightening torque is applied with a wrench, etc.
Can be felt as a shock. Since a taper with an increased diameter is provided in the screwing portion between the outer member 2 and the inner member 4, it is easy to immediately know that the screwing does not proceed and proper fastening is obtained. You can The conventional torque management becomes unnecessary.
【００２０】図１（ｂ）に示すようなトルク確認用ペイ
ント１０を、外側部材２と内側部材４とにわたって塗布
しておくこともできる。トルク確認用ペイント１０が外
側部材２と内側部材４との間で周方向にずれるようにな
ると、トルク管理ピン５が折損して、内側部材４と外側
部材２との間の相対的な変位が行われるようになってい
ることを、外部から容易に知ることができる。A torque confirmation paint 10 as shown in FIG. 1 (b) may be applied to the outer member 2 and the inner member 4 in advance. When the torque confirmation paint 10 is displaced in the circumferential direction between the outer member 2 and the inner member 4, the torque management pin 5 is broken, and the relative displacement between the inner member 4 and the outer member 2 is reduced. You can easily know what is going to happen from the outside.
【００２１】また本実施形態の締付ナット１で、内側部
材４には、図１（ｃ）に示すように、周方向に沿って切
断箇所１１が設けられる。外側部材２に締結工具でトル
クを作用させると、外側部材２と内側部材４との間の螺
合部分での締結が軸線方向６に進み、外側部材２は径が
増大する内側部材４と螺合するようになる。内側部材４
は径が縮小し、雌ねじ部３がねじ軸を締付けて、緩み止
めを図ることができる。外側部材２と内側部材４との間
には、テーパに基づく径方向の応力も作用し、締結部分
が緩みにくくなる。したがって、作業者に専門知識がな
くても、単に外側部材２を締結する作業を行うだけで緩
み止めを図ることができる。Further, in the tightening nut 1 of this embodiment, the inner member 4 is provided with a cut portion 11 along the circumferential direction, as shown in FIG. 1 (c). When torque is applied to the outer member 2 with a fastening tool, the fastening at the threaded portion between the outer member 2 and the inner member 4 proceeds in the axial direction 6, and the outer member 2 is screwed with the inner member 4 whose diameter increases. Will come together. Inner member 4
Has a reduced diameter, and the female screw portion 3 tightens the screw shaft to prevent loosening. A radial stress due to the taper also acts between the outer member 2 and the inner member 4, and the fastening portion is less likely to loosen. Therefore, even if the operator does not have specialized knowledge, it is possible to prevent loosening by simply performing the operation of fastening the outer member 2.
【００２２】図２は、図１の締付ナット１を用いてボル
ト１２に対する締結を行う構成を示す。図２（ａ）は締
付け状態、図２（ｂ）は緩め状態をそれぞれ示す。締結
状態では、ボルトの頭部１３軸部１４に螺合される締付
ナット１との間で、被締結材１５，１６間を締結する。
外側部材２は、ボルト２の軸部１４の先端から離れ、被
締結材１６の表面に近づく状態で、内側部材４に対して
締結される。外側部材２と被締結材１６とが対向する表
面間には、隙間があるようにしておく。隙間がないと、
外側部材２と内側部材４との間の締結状態が不充分で
も、外側部材２の締結を進めることができなくなってし
まうからである。FIG. 2 shows a structure in which the tightening nut 1 shown in FIG. 1 is used to fasten the bolt 12. 2A shows a tightened state, and FIG. 2B shows a loosened state. In the tightened state, the materials to be fastened 15 and 16 are fastened together with the tightening nut 1 screwed to the head portion 13 of the bolt and the shaft portion 14.
The outer member 2 is fastened to the inner member 4 in a state in which it is separated from the tip of the shaft portion 14 of the bolt 2 and approaches the surface of the material 16 to be fastened. There is a gap between the surfaces of the outer member 2 and the material 16 to be fastened that face each other. If there is no gap,
This is because even if the fastening state between the outer member 2 and the inner member 4 is insufficient, the fastening of the outer member 2 cannot be advanced.
【００２３】図２（ｂ）は、外側部材２の外形に締結を
緩めるトルクを作用させている状態を示す。外側部材２
は、内側部材４に対して相対的にボルト１２の軸部１４
の先端側に移動し、端面が止め輪９に当接するようにな
る。さらに緩めトルクを外側部材２に作用させると、外
側部材２と内側部材４との螺合部を越えてトルクが内側
部材４に伝達されるようになり、ボルト１２の軸部１３
から締付ナット１の全体を容易に緩めることができる。FIG. 2B shows a state in which a torque for loosening the fastening is applied to the outer shape of the outer member 2. Outer member 2
Is the shaft portion 14 of the bolt 12 relative to the inner member 4.
To the front end side, and the end surface comes into contact with the retaining ring 9. When a loosening torque is further applied to the outer member 2, the torque is transmitted to the inner member 4 beyond the threaded portion between the outer member 2 and the inner member 4, and the shaft portion 13 of the bolt 12 is
Therefore, the entire tightening nut 1 can be easily loosened.
【００２４】なお、被締結材１６の表面や、内側部材４
の端面などの面祖度は、細かくしておく方がよい。面祖
度が粗いと、締付け時に抵抗負荷がかかり、規定トルク
で締付けることができなくなってしまう。面祖度が粗い
箇所で使用する場合は、指定のワッシャを使用するよう
にすればよい。The surface of the material to be fastened 16 and the inner member 4
It is better to make the surface roughness of the end face, etc. finer. If the surface roughness is rough, a resistance load will be applied during tightening, making it impossible to tighten with the specified torque. If it is used in a place with a rough surface, a specified washer should be used.
【００２５】図３および図４は、図１に示す外側部材２
および内側部材４の形状をそれぞれ示す。図３および図
４の（ａ）は正面断面視、（ｂ）は平面視、（ｃ）は底
面視の状態をそれぞれ示す。なお、内側部材４の切断箇
所１１は、緩み止めを確実に行うために設けられている
けれども、トルク管理を図る目的のみであれば、不要で
ある。3 and 4 show the outer member 2 shown in FIG.
The shape of the inner member 4 is shown. 3 and 4 (a) shows a front sectional view, (b) shows a plan view, and (c) shows a bottom view. Although the cut portion 11 of the inner member 4 is provided for surely preventing loosening, it is not necessary for the purpose of torque management only.
【００２６】本実施形態の締付ナット１は、鉄道車輌、
鉄道の軌道、自動車、建設車輌、造船、道路橋脚、橋
脚、鉄塔、プラント、石油コンビナート、発電所、ビル
の鉄骨など、種々の締結部分に用いることができる。ト
ルク測定機能付の専用工具を不要とし、専門知識のない
者でも簡単に規定トルクで締付け作業を行うことができ
る。特に、内側部材４に切断箇所１１を設けて緩み止め
も図ることができるので、高所で管理しにくい締結箇所
などでも有効に利用することができる。The tightening nut 1 of the present embodiment is used for railway vehicles,
It can be used for various fastening parts such as railroad tracks, automobiles, construction vehicles, shipbuilding, road piers, piers, steel towers, plants, oil complex, power plants, and steel frames of buildings. No special tool with a torque measurement function is required, and even people without specialized knowledge can easily perform tightening work with the specified torque. In particular, since the inner member 4 can be provided with the cut portion 11 to prevent loosening, the inner member 4 can be effectively used even at a fastening portion which is difficult to manage at a high place.
【００２７】図５は、本発明の実施の他の形態である締
付ナット２１の概略的な構成を示す。図５（ａ）は正面
視、図５（ｂ）は正面断面視、図５（ｃ）は底面視の状
態をそれぞれ示す。本実施形態の締付ナット２１は、図
５（ａ）に示すように、軸２２の途中の任意の位置に目
的物などを止めるためなどに使用することができる。本
実施形態の締付ナット２１も基本的な構造は図１の実施
形態の締付ナット１と共通し、対応する部分には同一の
参照符を付して重複する説明を省略する。本実施形態の
内側部材２４には、内周側に雌ねじ部は設けられず、周
方向に切断箇所１１は設けられる。図５（ｂ）に示すよ
うに、内側部材２４の外周面には図１の材２と同様のテ
ーパを有する雄ねじ部７が形成され、外側部材２で締付
けると内側部材２４が径方向の内方に縮むように圧縮す
ることができる。図５（ｃ）に示すように、内側部材２
４の端面には、固定用工具と係合させるための凹部２５
として、たとえば径方向に延びる溝が設けられている。FIG. 5 shows a schematic structure of a tightening nut 21 which is another embodiment of the present invention. 5A shows a front view, FIG. 5B shows a front cross-sectional view, and FIG. 5C shows a bottom view. As shown in FIG. 5A, the tightening nut 21 of the present embodiment can be used to stop an object or the like at an arbitrary position on the shaft 22. The tightening nut 21 of the present embodiment also has a basic structure in common with the tightening nut 1 of the embodiment of FIG. 1, and corresponding parts are designated by the same reference numerals and redundant description will be omitted. The inner member 24 of the present embodiment is not provided with the female screw portion on the inner peripheral side, but is provided with the cut portion 11 in the circumferential direction. As shown in FIG. 5 (b), a male screw portion 7 having the same taper as that of the material 2 of FIG. 1 is formed on the outer peripheral surface of the inner member 24, and when the outer member 2 is tightened, the inner member 24 becomes radially inward. It can be compressed so as to shrink inward. As shown in FIG. 5C, the inner member 2
The end surface of 4 has a recess 25 for engaging with a fixing tool.
For example, a groove extending in the radial direction is provided.
【００２８】図６は、図５（ｃ）に示す凹部２５を利用
して内側部材２４を固定するための工具３０の例を示
す。工具３０の先端３１は、軸２２を囲うようなＵ字状
となっており、係合突起３２が設けられている。図５
（ａ）に示すように締付ナット２１を軸２２などの途中
に移動させ、工具３０の係合突起３２を凹部２５に係合
させて締結ナット２１を保持し、スパナなどで外側部材
２を内側部材２４に対して締付ければ、内側部材２４の
切断箇所１１のスリットが縮み、内側部材２４全体で軸
２２を抱き締めて、軸２２に対する固定を行うことがで
きる。FIG. 6 shows an example of a tool 30 for fixing the inner member 24 using the recess 25 shown in FIG. 5 (c). The tip 31 of the tool 30 has a U-shape surrounding the shaft 22 and is provided with an engagement protrusion 32. Figure 5
As shown in (a), the tightening nut 21 is moved in the middle of the shaft 22 and the like, the engaging projection 32 of the tool 30 is engaged with the recess 25 to hold the tightening nut 21, and the outer member 2 is held with a spanner or the like. When the inner member 24 is tightened, the slits at the cut portions 11 of the inner member 24 shrink, and the inner member 24 as a whole holds the shaft 22 and can be fixed to the shaft 22.
【００２９】本実施形態は、各種機械や治具などのシャ
フトにカラーとして取付け、移載装置の中間停止や他の
装置の取付けなどに有効に利用することができる。な
お、軸２２は外周が平滑であるけれども、ねじ軸を用
い、内側部材２４に相当する部分の内周側に、ねじ軸に
螺合する雌ねじ部を形成しておくこともできる。このよ
うな構成は、図１の実施形態で、トルク管理ピン５を除
いた構成に相当する。外側部材と内側部材との間の螺合
箇所と、内側部材と軸との間の螺合箇所とでダブルナッ
トを構成し、さらに切断箇所を設けた内側部材の弾性変
形を利用して確実な緩み止めを図ることができる。トル
ク管理ピン５を用いないので、何回でも締付けと緩めと
を繰返すことができる。The present embodiment can be effectively used as a collar mounted on the shaft of various machines or jigs, for intermediate stop of the transfer device, and for mounting other devices. Although the shaft 22 has a smooth outer periphery, it is possible to use a screw shaft and form a female screw portion to be screwed with the screw shaft on the inner peripheral side of the portion corresponding to the inner member 24. Such a configuration corresponds to the configuration of the embodiment of FIG. 1 except the torque management pin 5. A double nut is composed of a screwed portion between the outer member and the inner member and a screwed portion between the inner member and the shaft, and the elastic deformation of the inner member provided with the cut portion is used to ensure the reliability. It can prevent loosening. Since the torque management pin 5 is not used, tightening and loosening can be repeated any number of times.
【００３０】[0030]
【発明の効果】以上のように本発明によれば、一般的な
締結工具を用いて、単に外側部材を締結する作業を行う
だけで確実なトルク管理を図ることができるので、屋外
の建造物の固定などを、容易な作業で迅速かつ確実に行
うことができる。As described above, according to the present invention, the torque can be surely controlled by simply fastening the outer member using a general fastening tool. Can be fixed easily and quickly with certainty.
【００３１】また本発明によれば、単に外側部材を締結
する作業を行うだけで、緩み止めも図ることができるの
で、ねじ止め作業の効率を高めることができる。Further, according to the present invention, since the loosening can be prevented only by performing the operation of fastening the outer member, the efficiency of the screwing operation can be improved.
【００３２】さらに本発明によれば、軸に対する固定
を、容易に行うことができる。Further, according to the present invention, fixing to the shaft can be easily performed.
【図１】本発明の実施の一形態である締付ナット１の正
面断面図、平面図および底面図である。FIG. 1 is a front sectional view, a plan view and a bottom view of a tightening nut 1 according to an embodiment of the present invention.
【図２】図１の締付ナット１を使用する締結箇所の締付
けと緩めとを示す正面図である。FIG. 2 is a front view showing tightening and loosening of a fastening portion using the tightening nut 1 of FIG.
【図３】図１の外側部材２の正面断面図、平面図および
底面図である。3 is a front sectional view, a plan view and a bottom view of an outer member 2 of FIG.
【図４】図１の内側部材４の正面断面図、平面図および
底面図である。4 is a front sectional view, a plan view and a bottom view of an inner member 4 of FIG.
【図５】本発明の実施の他の形態である締付ナット２１
の正面図、正面断面図および底面図である。FIG. 5 is a tightening nut 21 according to another embodiment of the present invention.
FIG. 5 is a front view, a front sectional view, and a bottom view of FIG.
【図６】図５の締付ナット２１の締付時に用いる固定用
の工具３０の斜視図である。6 is a perspective view of a fixing tool 30 used when tightening the tightening nut 21 of FIG. 5. FIG.
１，２１ 締付ナット ２ 外側部材 ３ 雌ねじ部 ４，２４ 内側部材 ５ トルク管理ピン ６ 軸線方向 ７ 雄ねじ部 ８ 止め輪 ９ 周溝 １０ トルク確認用ペイント １１ 切断箇所 １２ ボルト １５，１６ 被締結材 ２２ 軸 ２５ 凹部 ３０ 工具 ３２ 係合突起 1,21 Tightening nut 2 Outer member 3 Female thread 4,24 inner member 5 Torque management pin 6 axis direction 7 Male thread 8 retaining rings 9 circumferential groove 10 Torque confirmation paint 11 cutting points 12 volt 15,16 Fastened material 22 axes 25 recess 30 tools 32 engagement protrusion
Claims (3)
外形を有する締付けナットであって、 該外形が外周部分に形成される外側部材と、 大略的に円筒状で、内周側にはねじ軸と螺合する雌ねじ
部が形成され、外周側で外側部材と螺合する内側部材
と、 内側部材と外側部材との間を連結して、外側部材から内
側部材にトルクを伝達し、予め定める基準トルクを越え
るトルクが印加されると折損するトルク管理ピンとを含
み、 内側部材の外周側には、外側部材で螺合状態を締付ける
軸線方向に向って径が拡大するように、テーパがつけら
れた雄ねじ部が設けられていることを特徴とする締付け
ナット。1. A tightening nut having an outer shape adapted to a fastening tool for applying a torque, the outer member having an outer shape formed on an outer peripheral portion, a substantially cylindrical shape, and a screw shaft on an inner peripheral side. A female screw part that is screwed with is formed, and the inner member that is screwed with the outer member on the outer peripheral side is connected to the inner member and the outer member to transmit torque from the outer member to the inner member. Includes a torque management pin that breaks when a torque exceeding the torque is applied, and the outer peripheral side of the inner member is tapered so that the diameter expands in the axial direction to tighten the screwed state with the outer member. A tightening nut having a male screw portion.
箇所が設けられることを特徴とする請求項１記載の締付
けナット。2. The tightening nut according to claim 1, wherein the inner member is provided with a cut portion along a circumferential direction.
外形を有する締付けナットであって、 該外形が外周部分に形成される外側部材と、 大略的に円筒状で、内周側には軸が挿入され、外周側で
外側部材と螺合する内側部材とを含み、 内側部材には、周方向に沿って切断箇所が設けられ、 内側部材の外周側には、外側部材で螺合状態を締付ける
軸線方向に向って径が拡大するように、テーパがつけら
れた雄ねじ部が設けられていることを特徴とする締付け
ナット。3. A tightening nut having an outer shape adapted to a fastening tool for applying a torque, wherein the outer shape has an outer member formed in an outer peripheral portion, a substantially cylindrical shape, and a shaft on the inner peripheral side. The inner member is inserted and includes an inner member that is screwed to the outer member on the outer peripheral side. The inner member is provided with a cutting position along the circumferential direction. The outer member is tightened on the outer peripheral side of the inner member in a screwed state. A tightening nut characterized in that a male thread portion that is tapered is provided so that the diameter increases in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001307894A JP2003113826A (en) | 2001-10-03 | 2001-10-03 | Fastening nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001307894A JP2003113826A (en) | 2001-10-03 | 2001-10-03 | Fastening nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003113826A true JP2003113826A (en) | 2003-04-18 |
Family
ID=19127283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001307894A Pending JP2003113826A (en) | 2001-10-03 | 2001-10-03 | Fastening nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003113826A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012061873A (en) * | 2010-09-14 | 2012-03-29 | Mitsubishi Aircraft Corp | Lightning-resistant fastener, cap, and method of the mounting lightning-resistant fastener |
| KR102107681B1 (en) * | 2018-10-31 | 2020-05-07 | 동국대학교 경주캠퍼스 산학협력단 | Double thread bolt, nut and snapring nut |
-
2001
- 2001-10-03 JP JP2001307894A patent/JP2003113826A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012061873A (en) * | 2010-09-14 | 2012-03-29 | Mitsubishi Aircraft Corp | Lightning-resistant fastener, cap, and method of the mounting lightning-resistant fastener |
| KR102107681B1 (en) * | 2018-10-31 | 2020-05-07 | 동국대학교 경주캠퍼스 산학협력단 | Double thread bolt, nut and snapring nut |
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