Patent ID: 7424893

Claim:
A dishwasher, comprising: a washing chamber in which tableware is washed; a rack movably installed in the washing chamber to hold the tableware therein; a plurality of guide rollers fixed to both confronting sidewalls of the washing chamber; a guide rail provided between the plurality of guide rollers configured to slide back and forth; and a height adjustment device configured to move the rack upward and downward, the height adjustment device provided to slide on the guide rail, wherein the height adjustment device comprises: a supporter that fixes the height adjustment device to the rack; a guide panel coupled to the supporter to guide upward and downward movement of the supporter, the guide panel coupled to slide on the guide rail; first and second support parts formed at the supporter and the guide panel, respectively, to fix the supporter to a predetermined portion of the guide panel, wherein the second support part comprises: a first incline portion having an upward incline plane at the guide panel; and a second incline portion having a downward incline plane at one side of the supporter, the second incline portion sliding to be brought into contact with the incline plane of the first incline portion to be seated upon the first incline portion when the supporter moves upward and, wherein a stopper is formed at the supporter and the guide panel so that the supporter is unable to further move upward when the second incline portion to be seated upon the first incline portion; and a button installed at the guide panel to push the supporter toward the rack to release the second incline portion to be seated upon the first incline portion.