Small Knowledge Points of Door Closers

The factors to consider when choosing a door closer include the width of the door, the frequency of opening the door, as well as the usage requirements and environment. The width of the door is the most important factor in choosing the model of the door closer. Usually, when the weight of the door is small, choose the model with less force, and vice versa. The frequency of door opening is closely related to the quality of the product. For frequently used occasions, the product should have good sealing performance and long service life.

The most commonly used door closer is an external door closer, which is installed on the hinge side and the open side of the door. When installed in this way, the arm of the door closer protrudes outward at approximately 90 ° with the door frame.

The door closer is installed on the closed side of the door opposite the hinge side. Usually, an additional bracket provided with the door closer is installed on the arm parallel to the door frame. This usage is usually used on outward facing exterior doors that are unwilling to install door closers outside the building. The body of the door closer is installed on the door frame instead of the door, and the door closer is on the opposite side of the door hinge. This usage can also be used for exterior doors that open outward, especially those with only a narrow top edge and not enough space to accommodate the body of the door closer.

Vertical door closer (built-in vertical door closer) is vertically concealed on the inner side of the door leaf shaft, and screws and components cannot be seen from the outside. It can be integrated with the door and can be opened and closed in both directions, making construction simple.