US Patent 7552738 Dishwasher and door locking device for the same

A dishwasher and door locking device is provided. In the dishwasher, a tub forms a washing chamber, a door opens and closes a front of the tub, a latch lock has a tub insertion portion inserted in an upper edge of the tub and a latch lock ring formed at a front of the tub insertion portion with a hole having a predetermined size, a latch includes a latch holder and a latch link pivotably connected to a lower end of the latch holder, a latch body is fixed in the door to accommodate the latch, and at least one detection switch is attached to the latch body to detect opening and closing of the door. The latch holder is inserted in the door and formed with a notched portion at a front for coupling with the latch lock.