Swage collar with internal sealing insert

摘要

A swage collar and an internal sealing insert form a swage collar assembly used in combination with a structural fastener to prevent leakage through a connection of workpieces fastened together by the structural fastener. The swage collar has a hollow, generally cylindrical main body portion with a main central bore, and a base portion with an internal shoulder formed in the main central bore so as to form a seal receiving guide. The shaft of the fastener typically includes a threaded section and an unthreaded section, and the internal sealing insert interfaces with the threaded section and the unthreaded section of the shaft of the pin. In an alternate embodiment, the internal sealing insert interfaces with the unthreaded section of shaft of the pin. The swage collar assembly is fitted over the fastener, a swaging tool is fitted over the swage collar assembly, and the swaging tool is forced over the swage collar assembly with sufficient force to cause plastic deformation in the swaging collar to force the swaging collar and internal sealing insert into engagement with the shaft of the fastener.

主权项

1. A swage collar assembly comprising, in an un-swaged state, a deformable swage collar having a body portion with an outer surface, a first end portion and a second end portion, wherein the second end portion includes an end surface, wherein the swage collar includes a central bore extending through the swage collar from the first end portion to the second end portion, a counterbore having a diameter larger than a diameter of the central bore and extending from the second end portion to an intermediate portion within the swage collar, the intermediate portion including a wall extending axially and inwardly from the counterbore to the central bore and defining a cavity extending axially within the swage collar; and a sealing element having a flat base and a second end portion, and wherein the second end portion of the sealing element converges from a surface of the counterbore and extends axially beyond the end surface of the swage collar second end portion.