The invention relates to a lock including a plurality of locking units. The locking units can move between a stretched-out locking position and a retracted unlocking position respectively. The locking unit includes a main locking component and at least one sub-locking component, which are manipulated by a lock transmission apparatus arranged in a lock box. The sub-locking component is pre-tensioned to the stretched-out locking position through elasticity, and can, and can only be loaded in a manner of moving against the elasticity direction along the sub-locking component from the stretched-out locking position to the retracted unlocking position through profile locking connection by means of the lock transmission apparatus.