JP2012061873A5

JP2012061873A5 -

Info

Publication number: JP2012061873A5
Application number: JP2010205341A
Authority: JP
Filing date: 2010-09-14
Publication date: 2013-08-08
Anticipated expiration: 2030-09-14

Description

かかる目的のもとになされた本発明の耐雷ファスナは、航空機の機体を構成する第一の部材に第二の部材を締結するため、第一の部材および第二の部材を貫通するとともに、第一の部材および第二の部材側の少なくとも一方に突出するファスナ部材と、ファスナ部材の突出した部分を覆うように取り付けられる絶縁性材料からなるキャップと、を備え、ファスナ部材の突出した部分に、係合部が形成され、キャップの内周部に、係合部に係合される被係合部が形成され、キャップは、被係合部に係合部が係合した状態で、被係合部以外の部分においてファスナ部材との間に間隙を隔てた状態で取り付けられ、キャップがファスナ部材から緩むのを防止する緩止め部が形成されていることを特徴とする。
このように、キャップに形成された被係合部にファスナ部材の係合部を係合させることで、キャップをファスナ部材に対して容易かつ確実に中心に位置決めして取り付けることができる。そして、緩止め部により、キャップがファスナ部材から緩むのを防止することで、耐雷性能を確実に維持できる。
ここで、係合部はネジ部であり、被係合部はネジ部に螺合されるネジ穴である構成とすることができる。
この場合も、キャップに形成されたネジ穴にファスナ部材をねじ込んで螺合させることで、キャップをファスナ部材に対して容易かつ確実に中心に位置決めして取り付けることができる。そして、緩止め部により、キャップがファスナ部材から緩むのを防止することで、耐雷性能を確実に維持できる。 The lightning-resistant fastener of the present invention based on such an object penetrates the first member and the second member in order to fasten the second member to the first member constituting the aircraft fuselage. includes a full Asuna member that protrudes into at least one of the one member and the second member, and a cap made of an insulating material is mounted so as to cover the protruding portion of the fastener member, the projecting portion of the fastener member the engaging portion is formed on the inner peripheral portion of the cap, the engaged portion to be engaged is formed in the engaging portion, the cap, in a state where the engaging portion with the engaged portion is engaged , in the portion other than the engaged portion attached in a state of separated a gap between the fastener member, the cap, characterized in that the loose stopper portion for preventing the loosening of the fastener member is formed.
Thus, by engaging the engaging portion of the fastener member with the engaged portion formed on the cap, the cap can be positioned and attached to the fastener member easily and reliably at the center. The lightning resistance can be reliably maintained by preventing the cap from loosening from the fastener member by the loosening prevention portion.
Here, the engaging portion may be a screw portion, and the engaged portion may be a screw hole that is screwed into the screw portion.
Also in this case, by screwing the fastener member into the screw hole formed in the cap and screwing the fastener member, the cap can be easily and surely positioned and attached to the fastener member. The lightning resistance can be reliably maintained by preventing the cap from loosening from the fastener member by the loosening prevention portion.

被係合部には、係合部に螺合されるネジ溝または係合部に嵌め合う嵌合溝が形成され、緩止め部として、被係合部に、係合部を形成する材料よりも柔らかい材料またはキャップを形成する材料と同材質で形成されたセルフロック部材が設けられ、セルフロック部材は、被係合部のネジ溝または嵌合溝よりもキャップの内周側に向けて突出し、セルフロック部材に係合部が食い込む構成とすることができる。
また、セルフロック部材は、ファスナ部材が有する軸部の軸線方向に沿って延びている構成とすることもできる。
さらに、被係合部に、ファスナ部材が有する軸部の軸線方向に沿って延びる溝を形成し、溝にセルフロック部材を嵌め込む構成とすることができる。 The engaged portion is formed with a screw groove that is screwed into the engaging portion or a fitting groove that fits into the engaging portion, and as a loosening stop portion, a material that forms the engaging portion on the engaged portion. A self-locking member made of the same material as that of the soft material or the cap is provided, and the self-locking member protrudes toward the inner peripheral side of the cap from the thread groove or the fitting groove of the engaged portion. The engaging portion can be configured to bite into the self-locking member .
Further, the self-locking member may be configured to extend along the axial direction of the shaft portion of the fastener member.
Furthermore, the groove | channel extended along the axial direction of the axial part which a fastener member has may be formed in a to-be- engaged part , and it can be set as the structure which engages a self-locking member in a groove | channel.

また、係合部がネジ部とされ、被係合部がネジ穴とされる構成において、緩止め部として、ネジ穴のネジ溝が、ネジ穴へのネジ部の挿入方向手前側はネジ部と等しいネジピッチで形成され、挿入方向奥側は、ネジ部よりも狭いネジピッチで形成された構成とすることもできる。 Further, in a configuration in which the engaging portion is a screw portion and the engaged portion is a screw hole, the screw groove of the screw hole is a screw portion on the front side in the insertion direction of the screw portion into the screw hole. And the back side in the insertion direction may be formed with a screw pitch narrower than the screw portion.

係合部は、被係合部内に挿入され、
緩止め部として、被係合部は、被係合部への係合部の挿入方向手前側から挿入方向奥側に向けて、その内径が漸次縮小する構成とすることもできる。 The engaging part is inserted into the engaged part,
As the locking portion, the engaged portion may be configured such that the inner diameter gradually decreases from the front side in the insertion direction of the engaging portion to the engaged portion toward the back side in the insertion direction.

係合部がネジ部とされ、被係合部がネジ穴とされる構成において、緩止め部として、ネジ部のネジ溝が、ファスナ部材の突出方向先端部側は、ネジ穴と等しいネジピッチで形成され、突出方向基端部側は、ネジ穴よりも狭いネジピッチで形成されている構成とすることもできる。 The engaging portion is a threaded portion, in a configuration in which the engaged portion is a screw hole, as loose stopper portion, the screw groove of the screw portion, the protruding direction front end portion of the fastener member is equal to the screw hole screw pitch The protruding direction base end side may be formed with a screw pitch narrower than the screw hole.

ファスナ部材とキャップとの間隙には絶縁性のシーラント剤を充填するのが好ましい。
この場合、係合部または被係合部に、ファスナ部材の軸線方向に沿ったシーラント排出溝を形成することもできる。これにより、ファスナ部材をキャップの被係合部に挿入したときに、被係合部に充填されたシーラント剤の余剰分を被係合部からシーラント排出溝を通して押し出すことができる。
さらに、キャップの開口端側において、キャップの径方向におけるシーラント剤の厚さが、予め定められた以上の寸法とするのが好ましい。これにより、キャップが脱落した際にも、シーラント剤のみによって耐雷性能を確保することができる。
なお、このような耐雷ファスナは、翼に限らず、航空機の機体においても適用可能である。 The gap between the fastener member and the cap is preferably filled with an insulating sealant.
In this case, a sealant discharge groove along the axial direction of the fastener member can be formed in the engaging portion or the engaged portion . Thus, upon insertion of the fastener member with the engaged portion of the cap, the excess of the filled sealant with the engaged portion can be pushed out through the sealant discharge groove from the engaged portion.
Furthermore, it is preferable that the thickness of the sealant agent in the radial direction of the cap be set to a dimension larger than a predetermined value on the opening end side of the cap. Thereby, even when the cap is removed, the lightning resistance can be ensured only by the sealant.
Such lightning-resistant fasteners can be applied not only to wings but also to aircraft bodies.

係合部がネジ部とされ、被係合部がネジ穴とされる構成において、キャップの頭部は、キャップをファスナ部材にねじ込むための工具を掛けることのできる形状としても良いし、キャップを作業者が手で回すのであれば、キャップの外周面に、滑り止め加工を施すのが好ましい。また、キャップに、キャップを作業者が手で回すための摘まみ部を突出形成しても良い。このとき、摘まみ部は、キャップに対して連結部を介して連結され、連結部は、摘まみ部をつまんでキャップをファスナ部材の先端部にねじ込んでいき、その締付けトルクが予め定めたレベルに到達したときにねじ切れるようにすれば、キャップの締付けトルクを容易に管理できる。 In the configuration in which the engaging portion is a screw portion and the engaged portion is a screw hole, the head portion of the cap may have a shape on which a tool for screwing the cap into the fastener member can be hung. If the operator turns by hand, it is preferable to apply an anti-slip process to the outer peripheral surface of the cap. Moreover, you may form in the cap the protrusion part for an operator to turn a cap by hand. At this time, the knob portion is connected to the cap via the connecting portion, and the connecting portion pinches the knob portion to screw the cap into the front end portion of the fastener member, and the tightening torque thereof is a predetermined level. If the screw is torn off when reaching, the tightening torque of the cap can be easily managed.

Claims

In order to fasten the second member to the first member constituting the aircraft body, the first member and the second member are penetrated, and at least on the first member and the second member side a full Asuna member that protrude Meanwhile,
A cap made of an insulating material attached so as to cover the protruding portion of the fastener member,
An engaging portion is formed on the protruding portion of the fastener member ,
The inner peripheral portion of the cap, the engaged portion to be engaged with the engaging portion is formed,
The cap, in the state in which the engaging portion to the engaged portion is engaged, is attached in a state in which separated a gap between the fastener member in a portion other than the engaged portion,
A lightning-resistant fastener, wherein a locking portion for preventing the cap from loosening from the fastener member is formed.

The engaging portion is a screw portion,
The engaged portion is a screw hole screwed into the screw portion.
The lightning-resistant fastener according to claim 1.

The engaged portion is formed with a thread groove that is screwed into the engaging portion or a fitting groove that fits into the engaging portion.
As the locking part, a self-locking member formed of the same material as the material forming the cap or the material softer than the material forming the engaging part is provided in the engaged part ,
The self-locking member protrudes toward the inner peripheral side of the cap from the thread groove or the fitting groove of the engaged portion,
Lightning-protection fastener according to claim 1 or 2, wherein the engagement portion bites into the self-locking member.

The lightning-resistant fastener according to claim 3, wherein the self-locking member extends along an axial direction of a shaft portion of the fastener member.

Said engaged portion, said groove extending along the axial direction of the shaft portion which the fastener member has is formed, lightning protection according to claim 4, wherein the self-locking member is fitted into the groove Fastener.

As the locking part,
Thread groove of the screw holes, the insertion direction front side of the screw portion of the screw hole is formed in the thread pitch equal to the threaded portion, the insertion direction rear side is formed in a narrower thread pitch than the threaded portion or it is,
Alternatively, the screw groove of the front pressure rams di portion, projecting direction front end portion of the fastener member is the formed with a screw hole equal thread pitch, wherein the projecting direction base end side is formed in a narrower thread pitch than the threaded hole The lightning-resistant fastener according to claim 2 .

The engaging portion is inserted into the engaged portion,
As the slow stop portion, said engaged portion is claims the direction from the insertion direction front side of the engagement portion of the engaged portion in the insertion direction rear side, characterized in that its inner diameter gradually reduced Item 3. The lightning-resistant fastener according to item 1 or 2 .

The slow as a stop, lightning-protection fastener according to claim 1 or 2, characterized in that it comprises a pin extending through the fastener member and the cap.

The lightning-resistant fastener according to any one of claims 1 to 8 , wherein the gap is filled with an insulating sealant agent.

The lightning-resistant fastener according to claim 9 , wherein a sealant discharge groove is formed in the engaging portion or the engaged portion along the axial direction of the fastener member .