| 摘要 |
A latch structure adapted to be mounted within a hollow perimeter frame member of a door or window panel, said hollow frame member having a forward face, a rearward face and a pair of side faces joining said forward face to said rearward face, said latch structure including: a first member securable, in use, within said hollow frame member at an intermediate position along said hollow frame member; a movable blocking member carried by said first member, said blocking member having a blocking part movable between an extended operative position and a withdrawn inoperative position, said blocking member being urged to move said blocking part towards said operative position; actuator means accessible, in use, externally of said hollow frame member to selectably move said blocking part from said operative position to said inoperative position; a first slide member positionable in use on one side of said first member, and a second slide member, positionable, in use, on an opposed side of said first member, each of said first slide member and said second slide member being movable along said hollow frame member away from said first member and towards said first member within said hollow frame member, each of said first slide member and said second slide member having a distal end engageable, in use, in a retaining zone when said first slide member and said second slide member has been moved outwardly relative to said first member; urging means to urge each of said first slide member and said second slide member inwardly towards said first member; each of said first slide member and said second slide member being accessible through at least one of said first face or said second face to enable manual movement in an outwards direction against said urging forces applied by said urging means; said first slide member including a first part adapted in a first position to retain said blocking part of said blocking member in said inoperative position when said first slide member is in an inner position, said first part of said first slide member freeing said blocking part of said blocking member to move to said operative position and thereby preventing said first part of the first slide member moving to said first position; and said second slide member including a second part engageable with said blocking part in said operative position when said second slide member has been moved along said hollow frame member away from said first member, said second part being engageable with said blocking part when in said operative position to prevent said second slide member moving towards said first member. k.0 SR t Ct Nt-" |
