Slide rail

A slide rail comprising:

• a first rail;
• a second rail, the first rail being slidably mounted on the second rail;
• a third rail, the second rail being slidably mounted on the third rail;
• a first resilient member mounted on the first rail;
• a second resilient member comprising a fixing plate and a spring piece coupled to the fixing plate;
• a third resilient member;
• and
• a locking member rotationally mounted on the second resilient member;
• wherein:
• the fixing plate is fixedly mounted on the second rail;
• an end of the spring piece is latched with the first resilient member;
• the second rail defines a receiving slot;
• the spring piece and the locking member are received in the receiving slot;
• the third rail defines a through slot;
• the locking member comprises hooks located on sides of the spring piece;
• the hooks are rotationally coupled to an end of the fixing plate adjacent to the spring piece by a pin;
• when the first rail is configured to be pulled out, the first resilient member drives the second resilient member to move along with the first resilient member to pull the second rail, when the receiving slot is configured to be aligned with the through slot, the spring piece and the locking member fall into the through slot, the spring piece separates from the first resilient member, the hooks latch onto a first step surface of the through slot to limit movement of the second rail, and the first rail continues to move.