Closer
The door closer is a specialized mechanical device that allows you to close the door from any position automatically. With its help, you can not only increase the comfort of using the door, but also significantly increase the service life of the hinges. To understand how to choose a door closer, you need to carefully study the principle of its operation and the main types of the product.
Door closer
Operating principle of the closer
As a rule, the closer consists of a spring and a piston. When the door is opened, the spring is tensioned, after which it returns to its original position, and the door closes at the same time. The piston allows for smooth and soft closing of the door structure.
Modern products are built on the same principle, but without the use of spring mechanisms. Ready-made door closers can be mounted both at the top and at the bottom of the door. The most popular design at the moment is the one using a gear and a rack. When using it, it is possible to obtain a hydraulic system that changes its force as the canvas closes.
Important! When selecting a closer, you need to take into account a large number of nuances, including the size and weight of the door, as well as its location.
Connect the lever to the rod
When the rod and lever are fixed, it is important to give the desired position, which will determine the speed of movement of the door before closing. The position and length of the two-piece rod can be adjusted with a long grub screw. It rotates and changes size at the same time.
Installing the rod perpendicular to the door leaf will help to achieve smooth finishing. To do this, make a setting and reduce its size. If there is a door latch, the pull must be strengthened to overcome the resistance. The mechanism is untwisted and adjusted to make it longer.
Door closer options for entrance doors
To choose the right product, you need to carefully study what designs currently exist. Closers are classified according to their characteristics, type of design and fastening. Based on the type of fastening, there are top, floor and hidden options.
Upper
The most common are overhead closers. They can often be found in various public places and on entrance doors. Their advantages are reliability, simple installation, low cost and durability. One of the parts is attached to the door frame, the other to the leaf. The disadvantage of this type of closers is usually considered to be a low level of protection from vandalism, as well as protruding levers (lever closers are considered the most common and affordable).
Overhead door closer
Floor-standing
A fairly good option that can be used with doors that open in one or both directions. Among the advantages of this option are:
- Possibility of use with glass door panels;
- soft closing;
- discreet look.
If installed correctly, this type of product will not interfere and will preserve the aesthetic appeal of the door. In terms of functionality and design, devices can differ greatly from each other (as well as the upper options).
Bottom door closer
Hidden
Hidden closers are placed either in the canvas or are part of the hinges and create a complete system. Miniature size is considered an advantage. The choice of this type of product should be made taking into account the weight of the door leaf. The hidden model can only be used with light canvases. For heavy metal or wooden entrance panels, it is necessary to use more reliable and efficient floor or overhead closers.
Installation of the device
- The door closer is installed on the door leaf, but it can also be installed on the door frame. When installing the device, follow the attached door closer installation diagram. This diagram, which most manufacturers provide in full size, is recommended to be glued to the surface of the door with tape. This way it will be constantly in front of your eyes during the installation of the device. Holes are drilled in the required places and the closer body is secured.
- Next, install the linkage in accordance with the instructions. Different product models may have different nuances in its installation and adjustment.
- Adjustment of the device using screws, which are usually located at the end of the housing. Sometimes they are under a removable cover. The screws are marked with numbers 1 and 2. Screw 1 adjusts the opening angle, 2 – the speed of operation of the closer. A quarter turn already makes a noticeable change, so you should rotate the screws carefully. A properly adjusted product will work properly for many years.
Door closers have long become commonplace in residential and industrial buildings, shops and offices.
It can be installed on both entrance and interior doors.
A correctly selected and installed product guarantees smooth opening and closing of doors if its mechanisms are adjusted every 4-6 months. The choice of these devices is huge.
Classification of closers
Most often, mechanisms are classified by closing force. There are 7 classes (EN1-EN7), each of which has its own performance characteristics. Depending on the class, it is determined how much fabric the device can handle. To roughly determine what type of entrance door the door closer can work with, you need to carefully study the following values:
Closer class | Maximum weight of the entire structure, kg | Maximum door leaf width, mm |
EN1 | 20 | 750 |
EN2 | 40 | 850 |
EN3 | 60 | 950 |
EN4 | 80 | 1100 |
EN5 | 100 | 1250 |
EN6 | 120 | 1400 |
EN7 | 160 | 1600 |
For street entrances and public spaces it is necessary to use the most reliable high-class models. Simpler options are suitable for home use. The choice can be made after determining the parameters of the canvas (width and weight).
When selecting, you should pay attention to all indicators of the device and pay attention to the type of design. If you plan to replace the door, it is recommended to purchase compatible fittings along with the door leaf. If you cannot make a choice on your own, you should contact professionals who can advise and select the most suitable option for your specific tasks and budget.
Popular door closer models
Safety
The working stroke of the side door closers is so small (6–7 mm) that only a finger can be pinched. On the interior side, the manufacturer does not leave any places where, for example, a child could find a gap in which a finger would be pinched. But the outer edges of the door still form gaps. However, you can only put a pencil in there.
This is how the Audi Q8 door closer bites through a pencil.
This is how the Audi Q8 door closer bites through a pencil.
Children should not operate the tailgate drives. Well, for an adult, the maximum force developed by the drive and not exceeding 10 kg at the edge of the door is not dangerous. If this force is exceeded, the door stops and even - on some cars - begins to open.
Rules for choosing a closer
There are a number of rules that are recommended to be followed so that the selection of a product is quick and trouble-free. The most important rule is the preliminary determination of goals and objectives and measurement of the door structure to select a compatible product. The following recommendations should also be observed:
- determine the installation location in advance in order to select the most suitable installation;
- compare the door closer class with the characteristics of the door group;
- choose products from trusted manufacturers;
- pay attention to the design, making a choice in favor of more modern options.
Making the right choice is quite easy if you take accurate measurements yourself. If the door is already hanging and its weight is unknown, then you should try to find a similar door in a store or on any website and carefully study its characteristics, including paying attention to the weight.
Important! It is necessary not only to make the right choice of product for specific tasks, but also to carry out high-quality installation. Installation should be carried out according to the instructions step by step.
Choice by material and weight
When choosing, you should use the classification table of closers. Having determined the material, weight and width of the canvas, you can proceed to the selection procedure. If the width or weight is between class 2 and 3, then you should choose an EN3 door closer. It is always necessary to round up, even if the indicator slightly exceeds the recommended norms.
Features of installing door closers
Plastic doors are considered the lightest and simplest. In this case, you should opt for simple hidden systems. Wooden structures are heavier. Metal products are considered the most massive and complex for door closers.
Choice of door leaf sizes
The width is of greatest importance. It is the width and mass that influence the force with which closing will be required. Also quite important when selecting is the height, which for most entrance panels is almost always the same (2000-2380 mm). Taking into account the width and height, you should select a suitable door closer.
Taking into account external influences
Among the external factors that may influence the choice are:
- weather;
- physical impact;
- vandalism.
Hydraulic systems use oil that can freeze in extremely cold temperatures. If you plan to use the closer in an extremely cold climate, it is recommended to purchase a frost-resistant product in advance.
Gusts of wind may affect closing. If the location of the device is always windy, it is recommended to choose more powerful models that can resist the wind both when opening and closing.
An important aspect is vandalism. If the door is an access door, then you should choose systems that are resistant to physical impact with hidden or protected elements. If the product will be used in a warm room, then there is no need to take into account negative external factors.
Working principle of a door closer
Common mistakes
Experts note that often buyers who independently select door closers make the following mistakes:
- The device class is selected incorrectly. And if you install a weak magnetic device on a heavy block, it will fail too quickly.
- A magnetic top mechanism is usually installed on swing structures. And on pendulum systems it is recommended to install a floor-mounted magnetic device (OKPD 28.63.14.150). If these recommendations are not taken into account, the service life of the devices will be significantly reduced.
- Buying a low quality product. Today you can find cheap door closers on the market. But how long will it last? Another thing is buying products from well-known manufacturers, for example. High-quality devices are made in compliance with all modern standards. They are designed for 500,000 openings and closings (OKPD 28.63.14.150).
Famous manufacturers
Among the most popular manufacturers that you should pay attention to when choosing are:
- Dorma;
- Cisa;
- KDS;
- O&O;
- Ryobi;
- Abloy;
- Diplomat;
- Boda.
The most popular accessories of this type are German, Japanese and Italian manufacturers. They offer an extremely wide selection of high quality products. Each product corresponds to the classification, has a reliable design and durability.
What does the mechanism installation process look like?
Some manufacturers add installation templates to the product kit with full-size images of all parts of the mechanism and the proposed locations of holes and fastenings.
Having studied the template and installation details of the mechanism, we proceed directly to the process of installing the device. First, the body is attached, which in the second stage is connected to the traction lever of the structure. By following the instructions, you will see that the installation technology is not complicated and takes very little time.
Please note that the closers differ in design, the location of the adjusting screws also differs
Installation and configuration
After purchasing, the door closer is quite easy to install. To install, follow these steps:
- Read the instructions carefully.
- The holes are marked and drilled. Some manufacturers include a template in the package for quick marking. If there is no template, then you will need to apply a closer, and then mark it.
- Fixation is carried out using screws.
The closer has several screws for adjustment. By changing their position, you can change the closing force and the speed of movement of the door leaf. After installation work, adjustments should be made correctly, based on your own needs and recommendations from the instructions.
Installation options for door closers
The setting must be made in such a way that the closing force increases as the door closes. There should be no pop or impact. The entire closing procedure must be silent.
What it is?
A closer is understood as an auxiliary product. It may vary in complexity and characteristics. The main mechanism is located in the housing, so there are options that can be mounted on entrance doors, near the street. The main element of the housing is the spring. It contracts when opened, collecting energy.
After you exit, the base begins to release energy back through the return mechanism. When the canvas returns to its cavity, the shock absorber is activated. Due to this, the canvas returns smoothly. The operating principle of the shock absorber is based on oil flowing from chamber to chamber.
In more complex designs there may be several shock absorbers. Their number affects the weight of the canvas, but in general, it does not affect the opening/closing technology. How softly the door closes is affected by the viscosity of the oil and the design of the internal oil chambers. The transmission moment between the spring mechanism and the blade is determined by the hinge, which often has a collapsible design.
This is convenient, since it will not be possible to take something out of the building with an active closer; the canvas will get in the way
Thus, we conclude that the door closer is a set of mechanisms that ensure the safe opening of the door, which is very important if there are small children in the house. In addition, it retains heat, which means it does not waste utility costs.
It eliminates the destruction of the canvas and also eliminates scratches.
User voting
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