Slide rail assembly and cabinet comprising the same

A slide rail assembly, wherein the slide rail assembly comprises a top rail, a middle rail and a bottom rail arranged in sequence from top to bottom;

• the top rail defines a first cavity and is provided with a first opening communicated with the first cavity, the bottom rail defines a second cavity and is provided with a second opening communicated with the second cavity, and the first opening and the second opening are arranged opposite to each other;
• the middle rail comprises a first bending portion, a transition portion, and a second bending portion connected in sequence, and the first bending portion is inserted into the first cavity through the first opening, and the second bending portion is inserted into the second cavity through the second opening;
• a first bracket is provided between the first bending portion and the top rail to separate the first bending portion and the top rail, and the first bracket is provided with a first hole in which a first rolling element in contact with the first bending portion and the top rail is provided;
• a second bracket is provided between the second bending portion and the bottom rail to separate the second bending portion and the bottom rail, and the second bracket is provided with a second hole in which a second rolling element in contact with the second bending portion and the bottom rail is provided;
• and
• the first bracket is provided with a first serrated edge along a length direction of the first bracket, the second bracket is provided with a second serrated edge along a length direction of the second bracket, a gear is provided between the first serrated edge and the serrated edge and meshes with the first serrated edge and the second serrated edge, and the gear is connected to the transition portion through a rotating shaft.