What is an ergonomic chair

What is an ergonomic chair

The ergonomic chair is elegantly designed, unique, fashionable and lightweight. It is a new type of environmentally friendly health chair that is widely used in modern homes, entertainment, Internet cafes, hotels, leisure, conference rooms, and office computer desks. The design principle is to release nature, human adjustment, and adaptability to a variety of body types; the material is mainly made of environmentally friendly materials.

Ergonomic chairs mainly uses elastic and environmentally friendly materials such as mesh (component: Dupont yarn + polyester fiber), environmentally friendly cloth + high-quality memory cotton to make seat cushions and chair backs. In terms of process design, it is very adaptable to the development of new trends in future furniture. It has good breathability and heat dissipation properties, is comfortable and healthy, and can prevent the chair from creating an environment for bacterial growth during use. It can also reduce the area of pressure on the buttocks and back, press the acupoints on the stressed areas, promote blood circulation in the buttocks and back, avoid neck, shoulder and waist strain, and maintain a healthy body.

Ergonomic chairs mainly adjust fatigue from the following aspects:

1. Head: The height and rotation of the headrest can be adjusted, allowing the user's cervical vertebra to naturally fit the headrest, standardizing the user's sitting posture, and improving office enjoyment. The best position is when the height of the headrest fully supports your cervical spine.

2. Chair back: The best support position for the waist is the third and fourth vertebrae. The entire chair back can be height-adjusted, which can easily and easily meet the needs of different users and reduce most of the human body weight borne by the lumbar vertebrae.

3. Lumbar support: Separate movable lumbar support, the resilience is concentrated on the movable lumbar support, giving the user the closest support. The movable lumbar support adjusts the curvature so that the entire lower back can relax and fit comfortably on the lower back, allowing the back spine to relax, thereby relieving the fatigue of the back spine.

4. Armrests: Adjust the height and angle of the armrests to provide a smoother transition between your hands and the tabletop to prevent mouse hands.

Free angle adjustment, stepless locking, arc-shaped back design, strength and elasticity processing of the bow frame, curved streamline processing of the armrests, etc.

Ergonomic chair sitting tutorial:

1. The correct seat cushion height must be adjusted so that your feet can be placed flat on the ground and the bending angle of your thighs is 90°.

2. For the correct seat cushion depth, sit your buttocks to the innermost part of the seat cushion, and adjust the seat cushion depth appropriately so that the seat cushion can effectively support more than 2/3 of the thigh area, and the bending angle of the thigh and calf should be 90°.

3. The correct armrest height should be adjusted until the arm and elbow are 90°. At this time, the arm hangs naturally without any hanging shoulder feeling. Long-term unsupported or poorly supported arms can cause shoulder pain or frozen shoulder, which can have a serious impact on health.

4. The correct back pad angle should ensure that the entire back is completely attached to the back pad, so that the back spine can be relaxed to a certain extent, thereby effectively relieving the fatigue of the back spine and preventing chest and back pain.

5. The correct waist height should be adjusted to the position of the third, fourth, and fifth lumbar vertebrae, because when the human body is in a sitting position, except for the legs and hips, the entire weight of the person is borne by the lumbar vertebrae. Therefore, correctly adjusting the waist height can help prevent tendon or myositis, disc herniation, spine slippage, lumbar muscle sprain, degenerative spondylitis, sciatica, etc.

6. When adjusting the depth of the seat cushion, you need to rely on the strength of the buttocks to slide out the seat cushion. At this time, the back needs to rely on a fixed back cushion so that the force is emitted from the buttocks. If the back cushion is not in a locked state, the back cushion will slide out. Loss of relying strength will cause the hips to be unable to exert force, and the seat cushion will not slide smoothly.

7. The correct angle of the armrest pad should be able to provide appropriate support to your hands or elbow joints anytime and anywhere. Without appropriate support for your hands or elbow joints for a long time, it is easy to cause carpal tunnel syndrome and elbow joint syndrome. Of course, it is related to the cervical spine. Protection also has a certain relationship.

8. The correct height of the headrest should be adjusted between the third and seventh sections of the cervical spine, so that the cervical spine can receive appropriate support, effectively relieve the fatigue of the cervical spine, and prevent bone spurs or chronic spinal degeneration.

9. The correct adjustment of the back cushion elasticity should be based on the weight of the relaxed back as the standard to properly adjust the elasticity of the back. If the elasticity is greater than the weight of the back, it will be difficult or difficult to recline, which will cause discomfort. , if the elasticity is less than the weight of the back, there will be a feeling of insufficient support or an insecurity caused by inadvertently leaning back quickly.

Push back test

The back push test is to apply a certain force to the back of the chair through the back push test machine, causing the chair to tilt backward to cause squeezing. Its purpose is mainly to test the ability of each component of the chair to withstand extrusion.

The back push test can be divided into two types according to the force applied: functional test and destructive test.

The test force for the functional test is 91kg and the duration is 1 minute. If any parts of the chair are deformed, damaged or broken after the test, the test has failed.

The force of the destructive test is 136kg and the duration is 1 minute. If any parts of the chair are severely deformed, damaged or broken after the test, the test fails.