Locking hinge assembly

摘要

A locking hinge including barrel members with a cylindrical female recess and a multi-sided center bore. A medial barrel member has a center bore and first and second cylindrical male portions rotatably inserted into one of the female recesses, and a multi-sided center bore, such that the bores are in axial alignment. First and second hinge pins have a cylindrical portion and a multi-sided portion slidably inserted through the aligned multi-sided center bores. A spring disposed in the medial barrel member urges the hinge pins apart. When in a fully locked configuration, the multi-sided portions of the hinge pins engage the multi-sided center bore of a male portion and a barrel member; when in an unlocked configuration, at least one or both of the hinge pins is depressed such that its multi-sided portion is disengaged from the multi-sided center bore of the barrel member through which it is slidably inserted.

主权项

1. A locking hinge having a plurality of fully locked configurations and a plurality of unlocked configurations, comprising:
a first barrel member having a multi-sided center bore and a female recess; a second barrel member having a first male portion sized to rotatably insert into said female recess of said first barrel member, said first male portion having a multi-sided center bore, such that when said first male portion is inserted into said female recess, said multi-sided center bore of said second barrel member is coaxial with said multi-sided center bore of said first barrel member; a hinge pin having a cylindrical portion and a multi-sided portion with a cross-sectional shape matching the shape of said multi-sided center bores, such that said multi-sided portion of said hinge pin slidably inserts through said multi-sided center bores with tight clearances; and a compression spring disposed in said center bore of said second barrel member so as to urge said hinge pin outwardly through said multi-sided center bore of said first barrel member; wherein when said locking hinge is in a fully locked configuration, said multi-sided portion of said hinge pin engages both said multi-sided center bore of said first barrel member and said second barrel member; wherein when said locking hinge is in an unlocked configuration, said multi-sided portion of said hinge pin disengages said multi-sided center bore of said first barrel member; and wherein said second barrel member further includes a second male portion having a multi-sided center bore, wherein said first male portion inserts into said female recess of said first barrel member, and further including a third barrel member, said third barrel member having multi-sided center bore and a female recess into which said second male portion inserts so as to bring all of said multi-sided center bores into axial alignment, such that said second barrel member is disposed between said first and third barrel member.