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What is an electric door closer?

January 05 , 2023

First. Working principle of electric door closer


1. The electric door closer enables the door leaf to realize the function of automatic closing through electric control. From the perspective of the structure of the electric door closer, the interior is a solenoid valve and a strong spring, which is suitable for the normally open fire door and can make the fire door normally open.


2. The electric door closer is composed of the main body of the electric door closer and a guide groove. The main body is installed in the guide groove of the door frame and installed on the door leaf (as shown in the figure). The electric door closer is mainly composed of a shell, a spring, a ratchet, an electromagnet, a rotating arm, and a guide rail. The structure is relatively complicated, and there are more than 60 parts. The rigidity of rods and paddles cannot be guaranteed, and they are easy to deform or jam or even fall apart.


3. Networked with the fire protection system, no electricity is used at ordinary times, and the fire door can be arbitrarily stopped, opened and closed within the range of 0-180 degrees. In the event of a fire, the controlled release (DC24V) energy storage mechanism generates torque, closes the door leaf by itself, and automatically restores (0.1S) non-energized state, giving a feedback signal. When it is released and has not been reset, it can also realize the function of non-positioning door closer, making the fire door a movable fire door. After the alarm is released, it needs to be manually reset, and the door can be kept open after the reset.

door closer

Second, the composition of the electric door closer:


The electric door closer is composed of two parts: the main body of the electric door closer and the guide groove. The main body of the electric door closer is installed at the door frame, and the guide groove is installed at the door leaf. The electric door closer is mainly composed of a shell, a rotating arm, a guide rail, an electromagnet, a spring, a ratchet and other parts, and its structure is relatively complicated. , there are as many as more than 60 kinds of small parts, some parts are more important, if the quality of these parts is not good enough, it is very easy to cause the electric door closer to fall apart.


Third. Installation method of electric door closer


1. The common standard usage is to install the door closer on the hinge side, the side where the door opens. When so mounted, the arms of the closer project outwardly, at approximately 90° to the door frame.


2. The door closer is installed on the side opposite to the hinge side and on the side where the door is closed. Usually an extra bracket supplied with the door closer mounts to the arm parallel to the door frame. This usage is usually on exterior doors that open outwards where it is not desirable to install the door closer outside the building.


3. The body of the door closer is installed on the door frame instead of the door in turn, and the door closer is on the opposite side of the door hinge. This usage can also be used for exterior doors that open outwards, especially those doors that have a very narrow top edge and not wide enough to accommodate the body of the door closer.


4. The vertical door closer (built-in vertical door closer) is upright and invisible on the inside of one side of the door shaft. No screws and parts can be seen from the outside. It can be integrated with the door and can be opened and closed in one and two directions, and the construction is simple.

Author:Written by Ms.Vivian He from S4A INDUSTRIAL CO.,LIMITED

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  S4A-Security For All.S4A Industrial Co., Limited, Founded in 2010, We have been dedicating in access control production R&D and sales for 10year till now. With the belief that we do one thing well in a lifetime, our CEO has been in this industry for 15 years. During the past 10 years, our products have been exported to various countries and regions. And 90% of customers come from the recommendations of cooperative customers, and 80% of the turnover comes from cooperative customers in the past 10years.Your business is a plant, we are the gardener, our mission is to water and fertilize the plant, and make it become the towering tree. We attach great importance to the partner's appeal, customer's suggestions, and feedbacks. To strengthen Product quality awareness, client's service awareness. Our clients and S4A are on the same path walking for many years.       S4A's future would be even more brilliant, this is related to all of our staff's working sweat. When you join this team, you will feel an invisible power to drive walk forward. S4A mainly produces a series of security Door Access Control such as:Network Access Controller, Locker board, Electromagnetic lock, Standalone door Controller, Automatic door opener, etcOur team can manufacture products, sell products, and do after-sales.In the realm of access control, one company stands out for its unwavering commitment to providing security services for everyone. S4A, which stands for "Security for All," has been at the forefront of access control technology for the past 13 years. With its own state-of-the-art factory and a strong focus on research and development, S4A has continuously delivered cutting-edge access control machines with the latest functions. Their dedication to product quality, customer feedback, practicability, and cost performance sets them apart as a leader in the industry.Factory and R&D Expertise:S4A takes pride in its fully-equipped factory, where skilled engineers and technicians work tirelessly to develop and manufacture access control solutions that meet the highest standards. The company's investment in research and development has resulted in a steady stream of innovative products that cater to evolving security needs.By staying ahead of the curve, S4A ensures that their customers have access to the latest advancements in access control technology.Quality Assurance and Customer Feedback:At S4A, product quality is of paramount importance. The company adheres to rigorous quality control procedures throughout the manufacturing process to guarantee the reliability and durability of their access control machines. Each product undergoes comprehensive testing to ensure it meets industry standards and exceeds customer expectations. S4A also places great value on customer feedback, actively seeking input to continuously improve their products and services. By listening to their customers, S4A maintains a customer-centric approach and delivers solutions that address real-world security challenges.Practicability and Cost Performance:S4A understands that access control solutions must not only be technologically advanced but also practical and cost-effective. The company's emphasis on practicability means that their products are designed to be user-friendly, easily integrated into existing systems, and adaptable to various environments. S4A's access control machines are known for their intuitive interfaces, simple installation processes, and seamless compatibility with other security systems. Additionally, S4A strives to provide cost-effective solutions without compromising on quality. Their competitive pricing ensures that security is accessible to businesses and individuals of all sizes.With 13 years of industry experience, S4A has cemented its position as a leading provider of access control solutions. Through their dedication to "Security for All," the company has set a benchmark for excellence in product quality, customer satisfaction,practicability, and cost performance. S4A's in-house factory and research and development capabilities enable them to stay at the forefront of technological advancements in the field of access control. As the company continues to evolve and innovate, S4A remains committed to empowering individuals and organizations with the highest level of security, ensuring that everyone can enjoy the peace of mind that comes with a reliable and efficient access control system.We can create value for you!Quality takes great importance for a company's credibility, and buyer's every penny spend must worth it. That is our most basic principle. Our business mainly for wholesale, so we could offer large quantities at competitive prices. During the past 10 years, We work hard to create value for our customers, and with our help, customers have an increasing market share. 99% of the customer...<
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