The variety of mechanisms Armchair set furniture and sofas allows to satisfy most exacting taste and to increase functionality of any sofa. On a way of transformation all mechanisms can be divided into three basic types conditionally: - traditional, allowing to put forward half sitting and to throw back backs, type "book" - under sitting is mechanism which is displayed in a berth, type " folding mechanism " - from under sitting berth, type "sofa" is put forward or rolled out.
Let's consider them more in detail.
In spite of fact that traditional (to it already more) mechanism of transformation such as "book" is cheaper than 50 years of other mechanisms, is applied it rather seldom (it is usually used less than in 20 % of production). principle mechanism is maximum simple: we lift sitting before click, we lower - and sofa is spread out. All and has taken place, if sofa stood in middle of a room or even in twenty centimeters from a wall. It is usually impossible, so, at mechanism significant physical efforts are required to move a sofa there - back on those centimeters. Similar "sports" not always under force to woman, let alone child. lock - latch in due course wears out, and a bit later unique fixing bañks an element there is that wall from which we just struggled. sofa is never displayed so to form absolutely horizontal plane. It is possible then to speak about what healthy dream! But, on other hand, only such design allows to have a berth along a wall, that it is important for small-sized apartments.
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