The invention of the door closer and its function
Modern hydraulic door closers (referred to as door closers) began with a patent registered by the United States in the early 20th century. It is different from traditional door closers in that it achieves buffering by throttling the liquid in the door closer. . The core of the design idea of the hydraulic door closer is to realize the control of the door closing process, so that various functional indicators of the door closing process can be adjusted according to people's needs. The significance of the door closer is not only to automatically close the door, but also to protect the door frame and door body (smooth closing).
Door closers are mainly used in commercial and public buildings, but also in homes. They have many uses, the main one being to allow doors to close on their own, to limit the spread of fire and to ventilate the building.
Post time: Jul-05-2020