Features and types of springs for the sofa
The comfort of a sofa depends on the filling, which is hidden under the upholstery. It is he who affects the softness, elasticity of furniture, its ability to hold and maintain its shape. Spring blocks are one of the most popular types of filler.
Among them there are outdated models, and there are modern orthopedic solutions. We will tell you about the types of spring blocks for sofas and give advice on choosing.
What is a sofa spring and how it works
The metal frame, which is attached to the wooden base and maintains the shape of the soft filler, are the sofa springs. Depending on the type of mechanism, the elements may or may not be attached to each other.
In more expensive models, there is a layer of dense fabric (often felt) under the spring block and above it. This prevents premature wear of the mechanism. In budget models, only the upper part is covered with matter, and foam rubber is used as a filler.
Types and advantages of mechanisms
Mounting methods and arrangement of springs in the block depend on its type. Consider all the options for the mechanism, tell you what a spring snake in a sofa is, and how it differs from a multipack.
Independent
One of the most reliable and modern units. Each spring is in an individual fabric cover, the elements are not connected to each other. The mechanical load is distributed only to the springs involved: if there is no pressure on some area, it will not sag under the weight.
Due to this feature, blocks with independent springs are considered the most reliable. If one spring fails, you don't have to repair the whole block. The sofa will not sag and lose its elasticity.
Most often in sofas with independent blocks, small springs made of thin steel wire are installed.
Bonnel
This system uses double cone springs, which consist of 4-5 turns. They are connected by a steel frame. The construction is impressive and durable. Bonnel has several frames, due to which the rigidity of the base is achieved. Such a system is reliable and durable.
Bonnel systems are very popular due to their features:
- springs are made of high carbon steel, environmentally friendly;
- the block can be laid on a base made of any material, including plywood or MDF.
In corner sofas, the sides are lined with boxes made of polyurethane foam, covered with batting or felt on top. Used for sofas with different folding mechanisms, found in accordions, books. The service life is several years, but with careful use it can last longer.
Multipack
In appearance and manufacturing scheme, they resemble independent springs. Each item is also housed in an individual case. The difference between these blocks is in the size of the springs.While the elements are larger in standard independent systems, then in the multipack a large number of small springs are used.
At the same time, sofas with such blocks are very durable, capable of withstanding significant weight.
Advantages:
- weight is distributed evenly;
- the springs are not connected, if one fails, the system does not surrender;
- due to the cover, the broken spring does not show through the upholstery;
- have a supportive effect;
- fit most models.
When purchasing a sofa with a multiblock, you need to pay attention to the number of springs. There should be at least 435 of them.
Snake
What a snake spring looks like in a sofa: the elements inside the frame are connected with steel staples, they are interdependent and in appearance resemble a snake.
Such blocks are made of galvanized steel under the influence of high temperatures. The most reliable bases are considered to be those with a large number of bends.
The main advantage of the mechanism is that it is cheap. However, sofas with a spring snake are not suitable for upholstered furniture for frequent use.
How to choose the right one
The first question to be answered is how the furniture will be used. If this is a sofa bed for sleeping, you should pay attention to orthopedic options with independent blocks. Sleeping on them is much more comfortable, the body will feel rested.
It is also important to choose the “right” filler. Foam sofas are not as reliable and durable. After a few years, it will begin to sag, and the springs can bite into people who are sitting or lying on the couch. It is better to pay attention to coconut coir - it is tougher and more reliable than foam rubber.
For most, the cost of the product plays a significant role. Sofas with dependent spring units are the cheapest, but if you plan to use the product for a long time, you should not buy the cheapest models. It is better to pay attention to the middle price category, since such sofas will last longer and do not require repairs, after a few months.
Operating rules
In order for the spring block to last longer, you need to follow the elementary rules for handling upholstered furniture:
- do not stand on the sofa with your feet so that a point load is not created in one place;
- do not jump on it from a run, so as not to damage the mechanism;
- carefully lay out and fold furniture in order to prevent deformation of the frame;
- when squeaks appear, the sofa subsides, immediately carry out repairs (on your own or call the master);
- when rearranging, do not drop or shake the sofa.
The more carefully the furniture is used, the longer it will serve its owners.
Mounting features
The spring blocks are mounted on a plywood or MDF base covered with felt (for better grip). In some models, instead of sheet material, wooden or metal slats are used, which are attached to the yards. Foam rubber, synthetic winterizer or other filler is attached on top of the spring block. It provides softness and comfort.
If necessary, the spring block can be replaced with an identical one. The "snake" system is not difficult to repair with your own hands using strong cords and fastening with staples made of thick wire. Usually, such mechanisms are repaired on their own or with the help of a master.
Video: independent spring block or PPU?
