Roller Blinds Mechanism: Spring And Chain Mechanisms, Roller Blinds

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Roller Blinds Mechanism: Spring And Chain Mechanisms, Roller Blinds
Roller Blinds Mechanism: Spring And Chain Mechanisms, Roller Blinds

Video: Roller Blinds Mechanism: Spring And Chain Mechanisms, Roller Blinds

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Video: How to retrofit a spring assist to your Roller Blind 2023, January
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Roller blinds are a special fabric that is wound on a small shaft. There are several types of such products, which allows you to choose them for almost all interior styles. The operation of these systems is provided by a mechanism for roller blinds. The duration and reliability of operation depend on its quality.

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Basic concepts

A feature of roller blinds is that their height is regulated by winding. In this case, the canvas can move in several ways:

  1. Direct. The fabric falls away from the glass, thus closing the roll.
  2. Reverse… When lowering, the canvas goes as close to the glass as possible.

The curtains can also be supplemented with special guides, which make it easier to lower the canvas. The mechanism for roller blinds itself consists of several structural parts:

  1. Round shaft. The diameter of this device depends on the size of the web and its thickness. It is made of aluminum or steel, which can work for a long time without the need for repair.
  2. Drive. This part is the element with which the shaft moves. In this case, the design is developed in such a way that the pipe can rotate in different directions. The control of such a system can be organized using mechanical or automatic action.
  3. Protective box. This detail is optional, but it is present in many products. It not only protects the device, but also decorates the frame of the mechanism.

Such products are often installed on plastic windows.

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Rope type

The mechanism of this kind is the simplest and consists of several elements:

  1. Rope. It connects to the main ropes in horizontal blinds.
  2. Roller. With its help, the force is transferred from the control thread to the fabric frame.

The adjustment process is quite simple and involves shortening the length of the threads that are between the individual elements. In this case, the canvas is simply compressed into a kind of accordion. If this approach is applied to a solid sheet of fabric, then folds form on its surface. This type of blinds is called roman blinds.

The rope mechanism can be easily built by yourself. To do this, rings are sewn to the canvas on the sides, through which the threads are passed. The latter are attached to the bottom of the curtain.

Height adjustment is carried out by uniformly pulling the bottom layer of the fabric and fixing the support thread on special hooks

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Ball control

Mechanisms of this type are based on the movement of a special chain, which drives the shaft. Chain structures require a special drum that is capable of transmitting forces to the pipe. It can be located at any end of the curtain (right or left).

The chain itself is made in the form of small balls, which are fastened with a thread. There is a small space between these elements, which is the same everywhere. There are special grooves on the surface of the drive drum, into which the balls fall. The design of the mechanism assumes a tight connection of these elements.

The movement of the shaft is carried out by the action of the balls on the drum. It resembles a kind of bicycle transmission, only with a different type of chain. To wind the curtain, you need to move the chain in one direction, and to lower it, in the other. In this case, the length of the thread should be approximately equal to 2/3 of the length of the curtain.

Among the shortcomings, one can single out the fragility of the structure.This is due to the fact that many mechanisms are made of plastic, which is quickly erased. But almost all chain models can be easily replaced. This makes this mechanism one of the most demanded and popular.

To prolong the life of this device, do not jerk the chain as it may break.

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Spring mechanism

Structures of this type are externally very attractive, since they do not have additional control systems. Many people install these curtains in offices or bedrooms. The mechanism itself is quite simple and assumes the presence of a spring that is connected to the shaft. At the same time, in one of the positions (top or bottom), it can be stretched, while in the other it can be almost without tension. This allows these mechanisms to be placed both above and below the sash.

Curtains with this mechanism are perfect for several types of windows:

  • swing-out;
  • vertical;
  • ceiling;
  • attic (made of plastic).
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Please note that the angle of the frame placement does not play any role, which cannot be said about other types of roller blinds.

Fixation of the web can be done in several main ways:

  1. A pen. This system is connected with special stops that can hold the curtain. To fix the product, you just need to turn the handle to the desired position.
  2. Locking ball. This element is located directly on the shaft. At the same time, it makes it easy to move the canvas down. To fix the fabric, simply move it up sharply. This will cause the ball to close the passage and the system will stop moving further.
  3. Hooks. The easiest and most common way. To prevent lifting, the bottom of the blade simply clings to the hook. These elements are often located along the entire length of the window sash.

The main disadvantage of the spring mechanism is its fragility. This is due to the fact that the spring quickly stretches and loses its original properties. Therefore, many do not recommend installing such curtains in a house with small children.

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Automatic

Today, a person tries to simplify his life as much as possible by transferring his responsibilities to mechanisms. This has led to the fact that as a drive in roller blinds Inspire began to use electric motors. Such mechanisms are much more complicated than those described earlier, although the principle of their operation remained unchanged.

The shaft movement is controlled by an electric motor that drives a special gear.

Please note that changing the direction here is not difficult, since you just need to change the poles of the electricity supply and make the motor spin in the other direction.

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There are several types of management of these systems:

  1. Stationary. For this, several buttons are installed near the window, which transmit signals to the main mechanism.
  2. Remote. A remote control and a receiver are already used as a regulator, which converts the received signal into the corresponding commands.
  3. Automatic. The most complex and expensive mechanism. Its kit includes not only the motor and shaft, but also several sensors. They react to lighting and, at a certain value, start the engine on their own.
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This type of mechanism is gaining more and more popularity. But at the same time it is quite expensive and not everyone can afford to buy such curtains. The disadvantage of the design is the complexity of the repair, which cannot be done independently.

Each of the mechanisms considered for roller blinds has its own unique features and technical characteristics. When choosing this product, it is important to take into account not only their technical equipment, but also the place of installation.

You can clearly see the mechanism of the roller blind in the next video.

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