JP6976073B2 - 複合構造物向けの拡張可能な樹脂充填型ファスナ、ファスナシステム、及び方法 - Google Patents
複合構造物向けの拡張可能な樹脂充填型ファスナ、ファスナシステム、及び方法 Download PDFInfo
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- JP6976073B2 JP6976073B2 JP2017086831A JP2017086831A JP6976073B2 JP 6976073 B2 JP6976073 B2 JP 6976073B2 JP 2017086831 A JP2017086831 A JP 2017086831A JP 2017086831 A JP2017086831 A JP 2017086831A JP 6976073 B2 JP6976073 B2 JP 6976073B2
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Landscapes
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- Connection Of Plates (AREA)
- Elimination Of Static Electricity (AREA)
Description
炭素繊維強化型プラスチック(CFRP)構造物などの複合構造物は、その高い重量比強度(strength−to−weight ratio)、耐食性、及び他の好ましい特性により、航空機、宇宙船、回転翼航空機、船舶、自動車、トラック、並びに他のビークル及び構造物の製造を含む、広範な応用において使用されうる。CFRP構造物などの複合構造物は、典型的には、マトリクス材(例えば炭素繊維などの繊維材料で強化された樹脂)を含む複合材料で作られる。樹脂は、概括的に、繊維材料とは対照的に、導電性ではない。
第1端部、第2端部、及び、第1端部と第2端部との間に配置されたシャフト本体であって、外表面と内表面とを有するシャフト本体を有する、細長いシャフトと、
第1端部に配置されたヘッド部と、
第2端部に配置されたねじ部と、
ねじ部にある開口から、細長いシャフトの長手方向中心軸に平行に、シャフト本体の内表面を通り、ヘッド部の近位の場所で終端するように延在する、少なくとも1つの供給チャネルとを備え、
ファスナが複合構造物内に形成された対応するファスナ孔の中に取り付けられている場合、シャフト本体は、加圧下で樹脂充填物が少なくとも1つの供給チャネル内に注入される際に、径方向に拡張するよう構成され、更に、径方向に拡張する際に、シャフト本体の外表面は、対応するファスナ孔の内側孔表面に直接接触するよう構成され、その結果、ファスナが、複合構造物との電気的接触を提供し、かつ、複合構造物への電流の分配を提供することになる、ファスナ。
一又は複数のファスナであって、複合構造物内に形成された一又は複数の対応するファスナ孔の中に取り付けられるよう構成された、一又は複数のファスナを備え、各ファスナが、
第1端部、第2端部、及び、第1端部と第2端部との間に配置されたシャフト本体であって、外表面と内表面とを有するシャフト本体を有する、細長いシャフトと、
第1端部に配置されたヘッド部と、
第2端部に配置されたねじ部と、
ねじ部にある開口から、細長いシャフトの長手方向中心軸に平行に、シャフト本体の内表面を通り、ヘッド部の近位の場所で終端するように延在する、少なくとも1つの供給チャネルとを備え、更に、
一又は複数の対応するファスナ孔内に取り付けられた一又は複数のファスナの各々に連結するよう構成された、注入ツールアセンブリと、
シャフト本体を、径方向に拡張させるため、及び、対応するファスナ孔の内側孔表面に直接接触させるために、注入ツールアセンブリを用いて加圧下で各ファスナの少なくとも1つの供給チャネル内に注入されて、この少なくとも1つの供給チャネルを充填する樹脂充填物であって、その結果、ファスナが、複合構造物との電気的接触を提供し、かつ、複合構造物への電流の分配を提供することになる、樹脂充填物とを備える、ファスナシステム。
一又は複数のファスナを複合構造物内に形成された一又は複数の対応するファスナ孔の中に取り付けるステップを含み、各ファスナが、
ヘッド部を有する第1端部、ねじ部を有する第2端部、及び、第1端部と第2端部との間に配置されたシャフト本体であって、外表面と内表面とを有するシャフト本体を有する、細長いシャフトと、
ねじ部にある開口から、細長いシャフトの長手方向中心軸に平行に、シャフト本体の内表面を通り、ヘッド部の近位の場所で終端するように延在する、少なくとも1つの供給チャネルとを備え、更に、
一又は複数のファスナを一又は複数の対応するファスナ孔内の定位置にトルクするステップと、
シャフト本体を、径方向に拡張させるため、及び、対応するファスナ孔の内側孔表面と直接接触させるために、加圧下で各ファスナのねじ部にある開口内に樹脂充填物を注入し、かつ、少なくとも1つの供給チャネルを樹脂充填物で充填するステップと、
複合構造物内に取り付けられ、かつ、樹脂充填物で充填された一又は複数のファスナと共に、複合構造物を硬化させるステップと、
各ファスナと対応するファスナ孔の各々の内側孔表面との間に電気的接触を提供し、かつ、航空機への電流の分配を提供するステップとを含む、方法。
Claims (12)
- 複合構造物(102)との電気的接触(88)を改善し、かつ、前記複合構造物への電流(152)の分配を改善するためのファスナ(10)であって、
第1端部(16)、第2端部(18)、及び、前記第1端部と前記第2端部との間に配置されたシャフト本体(20)であって、外表面(64)と内表面(66)とを有するシャフト本体を有する、細長いシャフト(14)と、
前記第1端部に配置されたヘッド部(22)と、
前記第2端部に配置されたねじ部(42)と、
前記ねじ部にある開口(40)から、前記細長いシャフトの長手方向中心軸(78)に平行に、前記シャフト本体の前記内表面を通り、前記ヘッド部の近位の場所で終端するように延在する、少なくとも1つの供給チャネル(70)とを備え、
前記ファスナが前記複合構造物内に形成された対応するファスナ孔(11)の中に取り付けられている場合、前記シャフト本体は、加圧下で樹脂充填物(120)が前記少なくとも1つの供給チャネル内に注入される際に、径方向に拡張するよう構成され、更に、径方向に拡張する際に、前記シャフト本体の前記外表面は、前記対応するファスナ孔の内側孔表面(86)に直接接触するよう構成され、その結果、前記ファスナが、前記複合構造物との電気的接触を提供し、かつ、前記複合構造物への電流の分配を提供することになる、ファスナ(10)。 - 前記ねじ部(42)にある前記開口(40)は前記ねじ部の底部端(46)にあるスロット開口(40a)を含み、前記供給チャネル(70)は中心供給チャネル(70a)を含む、請求項1に記載のファスナ(10)。
- 前記ねじ部(42)にある前記開口(40)は前記ねじ部の上部端(44)にある同心輪状開口(40b)を含み、前記供給チャネル(70)は同心輪状供給チャネル(70b)を含む、請求項1又は2に記載のファスナ(10)。
- 前記シャフト本体(20)は、前記ねじ部(42)の前記上部端(44)にある前記同心輪状開口(40b)から、前記細長いシャフト(14)の前記長手方向中心軸(78)に平行に、前記シャフト本体の前記外表面(64)を通り、ヘッド部(22)の近位で終端するように延在する、一又は複数の長手方向溝(87)を更に備える、請求項3に記載のファスナ(10)。
- 前記シャフト本体(20)の前記外表面(64)は、前記複合構造物(102)との電気的相互接続を提供するため、及び、前記複合構造物にファスナ留めされた前記ファスナによって形成されたファスナ留め接合部(108)に燃料密封(92)を提供するために、前記対応するファスナ孔(11)の前記内側孔表面(86)に接触するよう構成された複数のリッジ(82)を備える、請求項1から4のいずれか一項に記載のファスナ(10)。
- 前記シャフト本体(20)を径方向に拡張させる前記樹脂充填物(120)と共に使用されると、その結果、電流(152)の分配がヘッド部電流分配(153)とシャフト本体電流分配(154)とを含むことになる、コンプライアント型の隙間嵌めファスナ(12)を含む、請求項1から5のいずれか一項に記載のファスナ(10)。
- 航空機(200a)の複合構造物(102)との電気的接触(88)を改善し、かつ、前記航空機への電流(152)の分配を改善するための方法であって、
一又は複数のファスナ(10)を前記複合構造物内に形成された一又は複数の対応するファスナ孔(11)の中に取り付けるステップを含み、各ファスナが、
ヘッド部(22)を有する第1端部(16)、ねじ部(42)を有する第2端部(18)、及び、前記第1端部と前記第2端部との間に配置されたシャフト本体(20)であって、外表面(64)と内表面(66)とを有するシャフト本体を有する、細長いシャフト(14)と、
前記ねじ部にある開口(40)から、前記細長いシャフトの長手方向中心軸(78)に平行に、前記シャフト本体の前記内表面を通り、前記ヘッド部の近位の場所で終端するように延在する、少なくとも1つの供給チャネル(70)とを備え、更に、
前記一又は複数のファスナを前記一又は複数の対応するファスナ孔内の定位置にトルクで固定するステップと、
前記シャフト本体を、径方向に拡張させるため、及び、前記対応するファスナ孔の内側孔表面(86)と直接接触させるために、加圧下で各ファスナの前記ねじ部にある前記開口内に樹脂充填物(120)を注入し、かつ、前記少なくとも1つの供給チャネルを前記樹脂充填物で充填するステップと、
前記複合構造物内に取り付けられ、かつ、前記樹脂充填物で充填された前記一又は複数のファスナと共に、前記複合構造物を硬化させるステップと、
各ファスナと前記対応するファスナ孔の各々の前記内側孔表面との間に電気的接触を提供し、かつ、前記航空機への前記電流の分配を提供するステップとを含む、方法。 - 前記ファスナ(10)内に前記樹脂充填物(120)を注入した後に、前記樹脂充填物が前記ファスナから漏れることを防止するために、各供給チャネル(70)の前記開口(40)内に取外し可能なプラグデバイス(94)を挿入するステップを更に含む、請求項7に記載の方法。
- 前記一又は複数のファスナ(10)を取り付ける前記ステップは、前記一又は複数のファスナを取り付けることであって、前記少なくとも1つの供給チャネル(70)が中心供給チャネル(70a)と同心輪状供給チャネル(70b)の一方を含む、取り付けることを含む、請求項7又は8に記載の方法。
- 前記樹脂充填物(120)を注入し、かつ充填する前記ステップは、前記ファスナ(10)内に前記樹脂充填物を注入するために注入ツールアセンブリ(110)を使用することであって、前記樹脂充填物が、導電性の充填材(124)と混合された樹脂材料(122)を含み、前記注入ツールアセンブリが前記樹脂充填物を内包する容器(118)を備え、前記容器が前記ファスナに連結するよう構成されている、使用することを含み、前記注入ツールアセンブリは、前記容器に連結され、かつ、前記ファスナの前記ねじ部(42)にある前記開口(40)に連結されるよう構成された加圧注入器(126)であって、加圧下で前記ファスナ内に前記樹脂充填物を注入するよう構成された、加圧注入器を更に備える、請求項7から9のいずれか一項に記載の方法。
- 前記樹脂充填物(120)を注入し、かつ充填する前記ステップは、前記少なくとも1つの供給チャネル(70)を前記樹脂充填物で充填して、前記シャフト本体(20)を、約0.001インチから約0.002インチまでの径方向拡張で、径方向に拡張させることを含む、請求項7から10のいずれか一項に記載の方法。
- 電気的接触(88)を提供し、かつ前記電流(152)の分配を提供する前記ステップは、ヘッド部電流分配(153)とシャフト本体電流分配(154)とを分配することであって、前記シャフト本体電流分配は、径方向に拡張されている前記シャフト本体(20)の長さ(96)に沿って均一であり、前記ヘッド部電流分配が前記シャフト本体電流分配よりも大きい、分配することを含む、請求項7から11のいずれか一項に記載の方法。
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