公开(公告)号：US20140056664A1

公开(公告)日：2014-02-27

申请号：US14069931

申请日：2013-11-01

Applicant: ALCOA INC.

Inventor： Michael U. March ,  Oviedo Arciniega

IPC: F16B19/05 ,  F16B39/02

CPC classification number: F16B33/00 ,  F16B5/02 ,  F16B19/05 ,  F16B35/041 ,  F16B35/048 ,  F16B39/026

Abstract: A fastener adapted to pass through aligned holes through workpieces is disclosed. The fastener includes a pin member having a transition portion wherein the diameter of the transition portion decreases radially as it extends from the smooth cylindrical shank portion to the threaded portion. The fastener may also comprise a sleeve member and a clamping means. The clamping means includes a collar, a nut, or any other possible clamping means. In exemplary embodiments, the workpieces can be formed with a plurality of materials, the materials including composite, metallic, or composite/metallic structures, any combination thereof. In particular embodiments, the fastener has interference capability of 0.0005 to 0.0100 inches in composite structures without risk of composite delamination or damage. As a result of the fastener interference, gaps between the fastener and the structure are eliminated thereby providing good electrical conductivity between components. As a result, the potential for electrical sparks is reduced, providing a safer fastener for use with aerospace applications.

Abstract translation: 公开了一种适于通过对准的孔穿过工件的紧固件。 紧固件包括具有过渡部分的销构件，其中过渡部分的直径从平滑的圆柱形柄部分延伸到螺纹部分时径向减小。 紧固件还可以包括套筒构件和夹紧装置。 夹紧装置包括套环，螺母或任何其它可能的夹紧装置。 在示例性实施例中，工件可以由多种材料形成，所述材料包括复合材料，金属或复合/金属结构，其任何组合。 在具体实施方案中，紧固件在复合结构中具有0.0005至0.0100英寸的干涉能力，而没有复合分层或损坏的风险。 作为紧固件干涉的结果，消除了紧固件和结构之间的间隙，从而在部件之间提供良好的导电性。 因此，减少了电火花的可能性，为航空应用提供了更安全的紧固件。