| 摘要 |
<p>A lock for a displaceable wing ( 1 ) supported adjacent an opening ( 2 ) and having a closing edge ( 3 ) adjacent an element ( 4 ) defining the opening when the wing is closed; engageable means ( 5 ) mountable to the opening and including an entry aperture ( 6 ) connected to an offset aperture ( 7 ) of reduced width; a lock body mountable to the wing and including a casing ( 9 ) defined in part by a front edge ( 10 ) and an angularly displaceable bolt ( 11 ) having a leading edge ( 12 ) and at least one relatively protruding side shoulder ( 14 ), said bolt being displaceable about an axis orthogonal to the face of the wing and protruding from the front edge to engage the engageable means, said engagement being between the side shoulder ( 14 ) and the offset aperture which restrains the bolt and engageable means against relative displacement in a horizontal direction both parallel and orthogonal to the face of the wing.</p> |
