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What kind of waiting area chairs is the most comfortable?

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What kind of waiting area chairs is the most comfortable?

Author: waiting chairs | Time:


Let's first understand the sitting habits of people. People's sitting posture can be roughly divided into three types: sitting forward, sitting straight, leaning back. The posture of sitting forward is mainly the posture of work, and the posture of leaning back is the posture of rest and relaxation. When the person sits forward, the human pelvis rotates into a tilted state, and the tibia also moves accordingly, and tends to level, flattening the tibia and lumbar vertebrae, causing the spine to become a kyphosis above the waist, which looks like a hunchback, sitting straight. At the time, the pelvis is erect, the position of the tibia is also relatively vertical, and the lordosis of the spine is formed at the lumbar vertebrae.
 
By analyzing the physiological characteristics of people in sitting position, we can use these features to derive the most comfortable design size of waiting area chairs. When the design of the waiting chairs is ergonomically maximized, the comfort is maximized. So how do you design a row of chairs based on ergonomic principles? We will interpret the size standards of the bench.
 

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1 seat high
Seat height is the vertical distance from the seat to the ground. Since the seat surface is often inclined backwards, the seat height of cheap waiting chairs is usually the seat height of the front seat. If the seat surface has a backward tilt or a concave curved shape, the seat height refers to the vertical distance from the center of the front seat to the ground. Appropriate seating height: Keep the thighs horizontal, the calves vertical, and the feet flat on the ground. If the seat height is too high, the two legs will vacate the thigh blood vessels, and too low will cause physical fatigue.
 
2 depth
The seat depth refers to the front to back distance of the seat surface, and the seat depth has a great influence on the comfort of the sitting posture of the human body. If the seat is deeper than the horizontal length of the thigh, the backrest of the human body will have a large inclination, and the waist will lack the support point and hang, which will increase the strength of the muscle activity of the waist and cause fatigue. At the same time, the seat surface is too deep, so that the knee socket Produces numbness and is also not conducive to standing up.
 
3 seat width
The width of the seat surface of the row seat is often in the shape of a front width and a narrow shape according to the sitting posture and movement of the person. The width of the front edge of the seat surface is called the front width, and the width of the rear edge is called the back width. For a chair with armrests, consider the support of the human arm. Take the inner width of the armrest as the size of the sitting width, and add an appropriate margin according to the average shoulder width of the human body, but it should not be too wide. The comfortable posture of the natural vertical arm is the shoulder width.
 
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4 seat slope
When the person is resting, the sitting posture is leaning backwards to support the lumbar vertebrae, so most of the general seat surface is designed to be inclined backward. The seat slope is generally 3 to 5 degrees, and the opposite seat back is also inclined backward.
 
5 back height
The size of the backrest is mainly related to the height from the bottom of the buttocks to the shoulders (determining the height of the backrest) and the width of the shoulders (determining the width of the backrest).
 
6 armrest height
The height of the armrest should be similar to the vertical distance from the human ischial node to the lower end of the elbow when it is naturally drooping. At the same time, the front end of the handrail should be slightly higher. With the change of the inclination angle of the seat surface and the angle of the backrest, the inclination of the handrail is generally 10 degrees-20 degrees, and the handrail is preferably within 10 degrees of the horizontal left and right angle side.
 
All in all, the size of the furniture is based on the human scale, and only the size of the furniture is more comfortable.

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