Lockset

A lockset, comprising:

• an upper shell and a bottom plate which are fixedly connected to each other, an accommodating space being formed between the upper shell and the bottom plate, a jack being provided on the surface of the upper shell, a locking mechanism being provided within the accommodating space, the locking mechanism comprising a locking hook fitted with the jack and a control device for controlling the locking hook to move, the locking hook comprising a hook portion accessible to the underneath of the jack and a connection portion controlled by the control device, the hook portion being able to move toward one side of the jack when a code is correct, the connection portion being limited by the control device and the hook portion being limited underneath the jack when the code is wrong, an inclined portion and a vertical portion being provided on the front side of the hook portion, the inclined portion being located at an upper end, the vertical portion being located at a lower end, and the upper end of the inclined portion being inclined outward;
• the control device comprising a code mechanism, the code mechanism comprising a number of code wheels, a switch member for controlling the motion of a moving portion of the locking hook and an elastic member for assisting the resetting of the switch member, the switch member being in interlocked connection with the moving portion of the locking hook;
• when the code is correct, the switch member is located in an unlocked position and the locking hook can move with respect to the jack to realize unlocking;
• when the code is wrong, the switch member is located in a locked position, the locking hook is limited, and the hook portion is located underneath the jack;
• the switch member being a shaft lever on which the code wheels are sheathed;
• when the code is correct, the shaft lever can move with respect to the code wheels;
• when the code is wrong, the shaft lever is limited;
• and
• the code mechanism further comprising a code adjustment structure, code adjustment wheels being provided inside the code wheels;
• a reset spring for resetting the shaft lever being provided at one end of the shaft lever while a code adjustment device is provided at the other end thereof, the code adjustment device comprising a code adjustment block and a code adjustment switch block;
• a shaft hole fitted with the shaft lever being provided on the code adjustment block, and a first slope for pushing the code adjustment block towards the code wheels being provided at the upper end of the code adjustment block;
• a second slope fitted with the first slope being provided at the lower end of the code adjustment switch block, and the first slope being against the second slope;
• a code adjustment hole fitted with the code adjustment switch block being provided on the upper shell;
• during code adjustment, the code wheels are rotated to correct positions first, then the code adjustment switch block is pressed to push the code adjustment block to move towards the code wheels and thus push the code adjustment wheels to move and press against the reset spring;
• after the code adjustment wheels are moved, the code wheels can be rotated with respect to the code adjustment wheels for code adjustment;
• at the end of code adjustment, the code adjustment switch block is loosened, and both the code adjustment wheels and the code adjustment switch reset under the action of the reset spring, so that the code adjustment is completed.