| 摘要 |
A demountable hinge has a hinge pin (3) held captive to a first hinge knuckle (2) by a circlip (6) and releasably held to a second hinge knuckle (12) by a retaining screw (22) threadedly engaged with the second knuckle and having a frusto-conical locking surface (26) which makes a locking engagement with a frusto-conical surfaces (9) on the hinge pin when the retaining screw (22) is tightened. The engagement between the two frusto-conical surfaces (9,26) urges the hinge pin axially of the second leaf to provide a firm engagement between a further frusto-conical surface (10) on the pin and a complementary surface (11) on the second knuckle (12). In the arrangement of Figures 16 to 18 (not shown), in order to reduce the amount by which a door needs to be lifted for demounting, the second knuckle has a cut-out (29) to permit the hinge pin to be disengaged from that knuckle after a reduced axial displacement of the knuckles. <IMAGE>
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