As one of the important pieces of furniture in home life, the design of sofa's sitting depth, sitting height and backrest angle is directly related to the user's comfort experience.
Sitting depth has a significant impact on comfort. The appropriate sitting depth allows the user's thighs to be fully supported. Generally speaking, for adults of standard size, a sitting depth of 45 - 55 cm is more appropriate. If the sitting depth is too shallow, the front of the thighs will be hanging in the air, which will cause the leg muscles to be in a state of tension for a long time and easily cause fatigue; if the sitting depth is too long, it will cause the user to have more effort when getting up, and it will be difficult for the waist to lean on the backrest. , unable to obtain good support.
Sitting height also cannot be ignored. The sitting height needs to match the length of the human calf, usually between 40 and 45 centimeters. If you sit too high, your feet will not touch the ground smoothly, which will cause poor blood circulation in the legs, and numbness will occur over time; if you sit too low, your knees will be higher than your hips, and your body's center of gravity will lean forward, increasing the burden on your waist and back. , which can easily cause uncomfortable symptoms such as back pain and soreness.
Backrest angle plays a key role in providing comfort. The angle between the backrest and the seat cushion is generally 100-110 degrees. When the backrest angle is too small, the user will sit almost upright, and the back cannot be effectively relaxed. Holding it for a long time will tense the back muscles. If the backrest angle is too large, such as lying flat, although the body is more relaxed, it is not conducive to some daily activities. Activities such as watching TV, reading, etc. can easily make people feel sleepy.
For different usage scenarios, the requirements for these parameters will also vary. For example, when you are casually watching TV in the living room, the backrest angle can be relatively backward, the sitting depth is moderate, and the sitting height ensures that your feet can be placed comfortably; while in the study room, a sofa used for office work, you may need to sit slightly higher to facilitate the operation of the computer. The slightly straighter backrest angle helps maintain a focused work posture.
People of different age groups also have different needs for sofa sitting depth, sitting height and backrest angle. Due to poor body flexibility, the elderly should sit at a moderately low height to facilitate getting up, the sitting depth should not be too long, and the backrest angle can be slightly larger to provide better lumbar support; children need a relatively short sitting height and a higher seat height. A shallow sitting depth and a more upright backrest angle are used to adapt to its physical development characteristics and lively and active nature.
The overall style and design intent of the sofa will also affect the selection of these parameters. For example, a modern minimalist style sofa may pay more attention to simple and smooth lines, and its sitting depth, sitting height and backrest angle will be biased towards general comfort standards; while some sofas with a strong sense of design, special functions or shapes may not meet the needs of On the basis of basic comfort, these parameters are fine-tuned according to the design concept.
The seat depth, seat height and backrest angle of the sofa are interrelated and influence each other, which jointly determine the comfort of the sofa. When purchasing or designing a sofa, you need to fully consider the user's body characteristics, usage scenarios, age and other factors. Only by carefully adjusting these parameters can you create a truly comfortable and comfortable sofa, adding more comfort and warmth to home life. .
