Recently, a friend asked about the installation of door closers . This aspect is a common installation in the projects made by our weak current people, and most of the weak current people have come into contact with it.
The door closer is installed on the door. Its function is to automatically close the door when the door is opened. Its characteristic is that it can accurately close the door to the initial position . Door closers are widely used in our lives. It is mainly used in commercial and public buildings, but also in households. Its biggest function is to close the door tightly in the event of a fire , so as to prevent the spread of the fire. In this issue, let's take a look at the installation and precautions of the door closer.
1. Five installation methods of door closer
There are five ways to install the door closer. Depending on the door, the choice of installation is different.
1. Standard installation:
The door closer body is installed on the side of the sliding door, and the support arm is installed on the door frame. This installation method is suitable for narrow door frames and there is not enough space to install the door closer. This installation method is also suitable for the door opening direction without obstacles when the door is opened to a large enough angle, the door closer will not hit foreign objects.
2. Door frame installation:
The door closer is installed on the side of the sliding door, and the arm is installed on the door . This installation method is suitable for wider door frames and enough space to install the door closer. Compared with standard installation, this installation method is suitable for obstacles such as walls in the door opening direction . Compared with standard installation, the closing force of this installation method is larger, and it is suitable for larger and heavier doors.
3. Parallel installation:
The door closer is installed on the side of the sliding door, and the parallel plate is installed on the door frame . This installation method is suitable for very narrow door frames , or almost no door frames. After you install it in this way, there is no protruding connecting rod and rocker arm , so it is more beautiful. Compared with the standard installation, this installation is suitable for obstacles such as walls in the opening direction.
Compared with standard installation, parallel installation is suitable for low closing force, and there are obstacles such as walls in the opening direction.
4. Hidden installation:
This installation method is the same as the sliding rail installation for the hidden door closer . After installing in this way, the door has no exposed parts in the closed state, so it is the most beautiful. This installation method is the most complicated and it is best to require professionals to install it. This installation method requires a large gap between the door frame and the door frame , generally 10MM (or remove the material on the upper part of the door during installation to increase the gap). The thickness of the door exceeds 42mm.
5. Slide rail installation:
Compared with the previous methods, it mainly installs the equipment on the door, and the slide rail is on the door frame, which is suitable for places with low door closing force, and because there is no prominent connecting rod and rocker arm, the aesthetics is higher.
Two, door closer classification
1. Exterior door top door closer
The exterior door closer is equipped with a hydraulic buffer oil pump device , which can automatically close the door after it is opened . Its main feature is that the door closes slowly, and there is no collision sound after closing. It can be used on the gates of schools, hospitals, office buildings and hotels.
1. Exterior door top door closers are not suitable for two-way opening doors.
2. The speed adjusting screw controls the opening and closing speed of the door. Clockwise rotation is slow, counterclockwise rotation is fast.
3. The door closer should be filled with antifreeze oil after 1 year of use. When refueling, unscrew the oil hole screw to refuel, and tighten the screw when the oil is full.
4. The other screws and sealing parts cannot be twisted at will to prevent oil leakage.
2. Built-in top door closer
The built-in door top spring is composed of a hydraulic buffer spring installed on the door leaf , a slideway, a slider, and a link installed on the door frame . Since the built-in top door closer is installed in the slot of the door leaf and the door frame, it does not affect the appearance of the door when the door is closed. It is suitable for the door of high-end hotel rooms.
Three, door bottom spring door closer
Door bottom springs or automatic door bows are divided into horizontal and straight types. The door bottom spring is composed of upper and lower parts. The upper part is the top shaft and the top shaft sleeve plate, and the lower part is the bottom shaft and the spring body. Its function is equivalent to a double spring hinge, which can automatically close the door leaf after opening. When the door leaf is not automatically closed, just open the door leaf to 90°. The door bottom spring can be used on spring-loaded wooden doors or doors that open in both directions.
Four, floor spring door closer (floor door closer)
The floor spring is composed of upper and lower parts. The upper structure is a top shaft and a top shaft sleeve plate , and the lower structure is a rotary shaft and a base . The floor spring can not only make the door leaf close automatically, run smoothly, without noise, but also can adjust the speed of the door leaf automatically closes . When the opening angle of the door leaf is less than 90°, the doors and windows can be automatically closed in both directions; when the door leaf is opened to 90°, the door leaf can be fixed. This kind of floor spring is buried in the ground because of the main structure, which can keep the door leaf beautiful . On the doors of higher- level buildings.
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