Door closer, also known as modern hydraulic door closer, is a hydraulic device similar to a spring installed on the top of a door leaf. The door closer is a combination of metal springs and hydraulic damping, and there are various types of hydraulic door closer. Unlike traditional door closers, it achieves buffering by throttling the liquid in the door closer. When the door opens, it can be compressed and released to automatically close, acting like a spring door, ensuring accurate and timely closure of the door to its initial position.
