What is a door closer? Installation method of door closer
Brief introduction of door closer
The door closer is a spring like hydraulic device on the head of the door. When the door is opened, it can be compressed and released to close the door automatically. It is like a spring door, which can ensure that the door can be closed to the initial position accurately and timely after being opened.
The modern hydraulic door closer (hereinafter referred to as the door closer) began with a patent registered by the Americans at the beginning of the 20th century. It is different from the traditional door closer in that it achieves buffering effect 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 closing process, so that the various functional indicators of the closing process can be adjusted according to the needs of people. The significance of the door closer is not only to close the door automatically, but also to protect the door frame and door body (smooth closing). More importantly, the door closer has become an important executive part of the intelligent management of modern buildings.
Door closers are mainly used in commercial and public buildings, but they are also used at home. They have many uses, the most important of which is to close the door to limit the spread of fire and ventilation in the building.
Installation method of door closer
1、 This method is also the most common, the door closer is the way of external installation: the door closer is installed to the hinge side and the side of the door opening direction, using this installation method, the arm of the installed door closer is protruding towards the door opening direction, and is roughly perpendicular to the door frame at 90 & deg; angle.
2、 This method is usually used because it is not willing to install the door closer on the outward opening door outside the building, so as to keep the appearance clean: it is to install the door closer on the side opposite to the hinge side in the closing direction of the door. In addition, if the upper edge of the door is too narrow to accommodate the door closer to be installed, the body of the door closer can be installed on the door frame instead of the door, and the door closer is on the opposite side of the door hinge.
3、 The vertical installation method, that is, the built-in vertical installation of the door closer, is simple in Construction: the door closer is vertically and invisibly installed in the inner side of the door leaf shaft, which can be integrated with the door, and the screws and components can not be seen from the outside, and can be opened and closed in one direction and in two directions.