What are the types of sofas?
|The sofa can be divided into functional sofas, fixed back sofas, stepless self-controlled sofas, pneumatic sofas, electric sofas and TV sofas. The sofa is already a must for many families. Sofas sold on the market generally have a low back sofa, a high back sofa and an ordinary sofa between the first two.|
The low-back sofa is a rest-type light chair. It supports the user's waist with a support point. The height of the sofa back is relatively low, generally about 370 mm from the seat surface, and the angle of the backrest is also small, which not only helps the rest, but also reduces the outer dimensions of the entire sofa. This kind of sofa is convenient to move, light and small, and has a small footprint.
High back sofa: also known as aviation seat. It is characterized by three fulcrums that allow the person's waist, shoulders, and back of the head to lean against the curved backrest at the same time. These three support points do not form a straight line in space, so the technical requirements for making such a sofa are relatively high, and the selection difficulty at the time of purchase is relatively large. To make a wooden frame for a high-back sofa, it is necessary to clearly make a turning surface composed of three points on the shelf. Otherwise, it is difficult to ensure the position of the support point when performing a process such as a sofa mask, and the user is uncomfortable. When purchasing a high-back sofa, pay attention to whether the three support points on the back side are reasonable and proper, and can be judged by the test stand. The high back sofa evolved from a lounge chair. In order to improve the rest performance, it can also be equipped with a footrest. Before placing the sofa, the height can be the same as the front edge of the sofa seat.
Ordinary sofas are a common type of sofa for home use. Most of the sales on the market are such sofas. It has two support points to support the user's lumbar vertebrae and thoracic vertebrae, and can obtain the effect of matching the curved surface with the back of the body. The angle between the backrest of the sofa and the seat surface is critical. If the angle is too large or too small, the user's abdominal muscles will be strong and fatigue. Similarly, the width of the sofa seat should not be too large, usually within 540 mm according to the standard requirements, so that the user's calf can be adjusted to sit comfortably and rest more comfortably.