Side lock for a roll-up door

摘要

A side lock (20) for a roll-up door (21) mounted on a body includes a keeper (27) mounted on a jamb (23) adjacent an access opening (22). A hook member (28) is pivotally mounted on a panel (25) and is arranged to selectively engage a catch (59) mounted on the keeper. The hook member has an upper cam surface (76) and a concave surface (78). The hook member also has a lower cam surface (75) which is adapted to selectively engage the catch when the door is lowered to selectively displace the hook member against the opposing bias of a spring (91) to permit the tip (66) of the hook member to pass beneath the catch. The improved side lock is self-tightening.