A sofa, a transliteration of the English word "sofa," is a type of upholstered furniture. It's made primarily of wood, metal, or other rigid materials with a frame covered in elastic or soft materials. Utilizing springs, foam, fabric, or leather, it comes in various sizes and styles, suitable for all types of rooms, including living rooms, dining rooms, and bedrooms.
Sofas typically consist of a seat cushion, backrest, and armrests. They are categorized by material: wooden sofas, metal sofas, plastic sofas, inflatable sofas, bamboo sofas, and rattan sofas. Functionally, they are classified as standard sofas, reclining sofas, sectional sofas, and convertible sofas.
Currently, the most widely used sofas have a wooden frame, with a structure primarily consisting of the frame, filling, and fabric. Arrangement styles include linear, L-shaped, U-shaped, symmetrical, and circular combinations.
Sofa design must be based on ergonomic principles and basic human dimensions to achieve an optimal balance between the user and the sofa, meeting the needs of rest and use.
