Door closer working principle

Do you still have questions about the novelty of life? And is every day a new day full of confidence? If you feel that the novelty of life is gradually disappearing, you can see everything in the world at a glance. Then you are wrong. Here's the question: Do you know what the door closer is?

Maybe smart, you will point to the door closer on the door to answer my questions confidently. It is true that this question has not tested you, but don't be too happy. Then I will ask: This is on the top of the door. What can make the door easily closed? Is there electricity to support its operation? I'm afraid that is not the case.

Let me now open up mystery to you. Taking the Brinon door closer of Anlangjie as an example, the door closer is actually a mechanical device that can be automatically closed by mechanical principles. The door closer is a spring-like hydraulic device. When you manually push the door open, the spring in the door closer is compressed to store energy. Then the spring is released through the spring and the door closing force is transmitted to the door through the door closer rocker. Automatic door closing without external force. The cylinder in which the spring is located is a hydraulic system with a precise design. It is enclosed with hydraulic oil. Through this hydraulic system, we can also control the door closers to achieve various adjustments to meet people's needs.

Briton has a simple, clean silver finish and rocker arm and cylinder, but the door closer isn't as simple as we seem. The internal structure of the door closer is a secret world that is running at any time and operates steadily. The inside of the door closer is composed of a rack piston, springs, oil control valves, balls, oil passages, and filled hydraulic oil, and the overall use of excellent sealing properties. The design makes it impossible to leak hydraulic oil. How do these complex little things work together? Then let's take a look at the internal structure of the cylinder block, which is the door closer.

First, the closing speed is adjustable: the trajectory of the closed door leaf is a 90-degree arc, and the area where the door closing speed can be adjusted is generally within the range of 10 degrees to 90 degrees.

Second, the lock speed is adjustable

The door you see is in the final 0-10 degree zone. The speed at which the door closes in this area is called the lock speed. The door closer with adjustable locking speed has a locking speed regulating valve. By adjusting the valve, it allows you to adjust the closing speed to ensure that any bolt can enter the locking plate and complete the locking action.

Third, open the buffer function

Advanced door closers usually have an open-door cushioning function so that when the door opening force is too large, it will not hit the adjacent wall because the door opening speed is too fast.

Fourth, delay function

The delay feature does not automatically close the door closer. For example, when you push a wheelbarrow or a heavy object through the door leaf, the door body can be delayed for a few seconds before returning to normal closing speed. This will make it easier for people to pass. Compared to the normal closing time of 5-10 seconds for most doors, The door closer can be adjusted up to a delay of two minutes or more.

Fifth, stop the door function

This seems to be in contradiction with the automatic closing of the door closer. However, the use of this feature may be useful in certain situations, such as requiring the door to stay open at a certain moment in the loading area. We usually use the door stop block on the door closer arm. When we set the door stop angle, the door leaf will open to a certain angle and it will stop. When the manpower exceeds this angle, the door will return to the automatic closing state. . However, please note that door closers with a door stop function are forbidden on fire doors!

Six, adjustable force level

The force level of the door closer determines the applicable door width and weight. At present, the door closer in the market usually adjusts the force level by adjusting the length of the spring and adjusting the mounting position. There are usually forces 1 to 6 and the higher force levels apply to wider and heavier doors. A door closer in the market is a fixed force level door closer. Such as fixed 3rd force or 4th force. This means that they are fixed to a certain width of the door. Another kind of door closer is adjustable in force level and is suitable for a series of door widths, such as the 2nd to 4th adjustable force door closers.

Now that you have completed the above introduction to the principle and various functions of the door closer, you are already an expert behind the door closer! However, knowledge is never ending. It is better to suggest that you observe and feel the operation of the door closer. If there is anything you do not understand, Anlangjie will always be your think tank and will accompany you.