Lock structure suitable for various lock cores

A lock structure, suitable for various types of lock core, comprising an engagement member arranged at one side of a lock core axle of a lock device and operatively coupled to the lock core axle to be rotatable by the lock core axle, the engagement member comprising a rod section such that the engagement member is coupled to a link bar through the rod section engaging the link bar, a handle axle comprising an arrestor member that comprises a first drive bar that is coupled to and rotatable by a lower part of the link bar, such that the arrestor member is coupled to a stop plate and a push bar, a retention member being arranged under the push bar, wherein when the lock core axle is rotated by means of a key, the engagement member is rotated from a first angular position to a second angular position and the link bar that is coupled to the engagement member through the rod section of the engagement member is driven to move linearly from a first linear position to a second linear position to in turn rotate the arrestor member from a third angular position to a fourth angular position to achieve locking;

• wherein an operation of the lock core axle causes a first rotary motion of the engagement member, which is converted into a linear motion of the link bar and further converted into a second rotary motion of the arrestor member such that the second rotary motion of the arrestor member drives the push bar for operating latches/bolts for locking.