Door lock

A door lock, comprising:

• a latch head for locking a door of a top loading electrical appliance, the latch head being rotatable about an axis to move between a latch head unlock position and a latch head lock position;
• and
• a limiting mechanism that selectively engages the latch head for permitting or restricting rotation of the latch head;
• wherein:
• when the latch head is in the unlock position before the door of the top loading electrical appliance reaches a closed position, the limiting mechanism engages the latch head to restrict rotation of the latch head;
• when the latch head is in the latch head lock position, the limiting mechanism is disengaged from the latch head;
• during closing of the door of the top loading electrical appliance, the door pushes the limiting mechanism in a first direction to disengage the limiting mechanism from the latch head;
• during locking of the door lock, the latch head rotates about the axis in a second direction;
• the limiting mechanism is arranged for restricting the latch head from rotating from the latch head unlock position to the latch lead lock position before the door of the top loading electrical appliance reaches the closed position by blocking movement of the latch head toward the door of the top loading electrical appliance;
• the limiting mechanism includes a limit post, the limit post having a limit post lock position and a limit post unlock position;
• before the door of the top loading electrical appliance reaches the closed position, the limit post is located at the limit post unlock position to block the latch head, such that the latch head cannot rotate toward the door of the top loading electrical appliance to the latch head lock position;
• and
• when the door of the top loading electrical appliance reaches the closed position, a front edge of the door of the top loading electrical appliance can press the limit post, such that the limit post can reach the limit post lock position and the latch head can rotate toward the door of the top loading electrical appliance to the latch head lock position
• when the limit post is located at the limit post lock position, the limit post is located within a rotating path swept by the latch head while moving between the latch head unlock position and the latch head lock position, but not blocking the latch head, wherein when the latch head is in the latch head unlock position, the latch head and the limit post are arranged angularly crossed over and engaged with each other and when the latch head is in the latch head lock position, the latch head and the limit post are not arranged angularly crossed over or engaged with each other.