Bracket assembly

A bracket assembly applicable to a rack having a first post and a second post, the bracket assembly comprising:

• a first bracket arranged with a first mounting member;
• a second bracket longitudinally movable relative to the first bracket, the second bracket being arranged with a second mounting member;
• a toothed bar arranged on the first bracket;
• a working member arranged on the second bracket, the working member being configured to be engaged with the toothed bar;
• and
• an operating member movably mounted on the second bracket;
• wherein when the working member is engaged with the toothed bar, the first bracket is only movable relative to the second bracket along a first direction, and the second bracket is only movable relative to the first bracket along a second direction, such that a distance defined between the first mounting member and the second mounting member is adjustable from a first length to a second length, wherein the second direction is opposite to the first direction, and the second length is greater than the first length;
• wherein when the distance is adjusted to the second length, the first mounting member of the first bracket is configured to be mounted to the first post, and the second mounting member of the second bracket is configured to be mounted to the second post;
• wherein when the working member is engaged with the toothed bar, the first bracket is not movable relative to the second bracket along the second direction, and the second bracket is not movable relative to the first bracket along the first direction;
• wherein the operating member is configured be operated to move from a first operating position to a second operating position in order to disengage the working member from the toothed bar, such that the first bracket is movable relative to the second bracket along the second direction and the second bracket is movable relative to the first bracket along the first direction.