Pull-out system

A pull-out system comprising:

• at least two slide rails that each have a fixed rail, a middle rail slidably arranged on the fixed rail, and a movable rail slidably arranged on the middle rail;
• and
• a synchronization unit which synchronizes movements of the respective movable rails,
• wherein the synchronization unit includes a roller part, a synchronization bar connected to the roller part, and a deflectable element having one end fixed to the roller part and the other end connected to the movable rail, and
• the movable rail is moved by a rotation amount of the roller part,
• wherein the synchronization unit further includes a leaf spring that maintains a tension of the deflectable element,
• wherein the roller part includes a first roller and a second roller spaced apart from each other, and one end of the synchronization bar is connected to a central shaft of the first roller,
• wherein the first roller has a first space part formed by a first middle plate, and one end of the leaf spring is fixed to the first space part,
• the second roller has a second space part and a third space part formed by a second middle plate and an outer plate parallel to each other,
• the other end of the leaf spring is fixed to the second space part, and the leaf spring is mounted on the first space part and the second space part in an “S” shape, and
• one end of the deflectable element is fixed to the third space part.

A pull-out system comprising:

• at least two slide rails that each have a fixed rail, a middle rail slidably arranged on the fixed rail, and a movable rail slidably arranged on the middle rail;
• and
• a synchronization unit which synchronizes movements of the respective movable rails,
• wherein the synchronization unit includes a roller part, a synchronization bar connected to the roller part, and a deflectable element having one end fixed to the roller part and the other end connected to the movable rail, and
• the movable rail is moved by a rotation amount of the roller part,
• wherein the synchronization unit further includes a leaf spring that maintains a tension of the deflectable element,
• wherein the roller part includes a first roller and a second roller spaced apart from each other, and one end of the synchronization bar is connected to a central shaft of the first roller,
• wherein the first roller has a first toothed part on an outer circumferential surface thereof,
• the second roller has a second toothed part engaged with the first toothed part on the outer circumferential surface thereof and an inter-space part defined by the second toothed part and an outer plate, and
• one end of the deflectable element is fixed to the inter-space part, and the leaf spring is mounted in an inner space of the second roller.