The importance of the existence of a human body pressure distribution measurement system
Human pressure distribution measurement system tester
With the development of society, people pay more and more attention to the improvement of quality of life and the experience of comfort.
Overview:
Seat comfort is an important indicator of car seating, including static comfort and dynamic comfort. The so-called comfort is the subjective feeling of the human body, caused by both physical and psychological factors.
Static comfort means that the seat's position, geometry, structural design, etc. should allow the human body to have a verified sitting posture and good touch in a certain working environment.
Dynamic comfort requires the seat to still have a good feeling of static while the driver is completing the driving task.
The best backrest angle for a car seat is 108°
The best angle to read is 101°--104°
The basic requirements for seat comfort can be listed as follows:
1. Limit the fatigue of the driver and the occupant to a minimum;
2, can withstand greater pressure, safe and reliable;
3, beautiful and generous, good thermal comfort, good moisture permeability, good breathability, good sense of touch;
4, with good anthropometric characteristics, that is, to adapt to different body, size of the driver and occupants;
The pressure distribution between the human body and the seat is called the body pressure distribution of the sitting posture. The distribution of body pressure in a sitting position is a major factor in evaluating comfort. From a physiological point of view, the muscles around the ischial bone of the human body can withstand greater pressure, while the muscles under the thighs contain relatively large nerves and blood vessels, and cannot withstand large pressure for a long time, otherwise it is prone to paralysis, soreness, etc. Discomfort and affect nerve conduction.
How to experience a comfortable seat
1, space size
In addition to the wheelbase design of the car will affect the seating space, whether the design of the seat is reasonable will also affect the occupant's space experience. Seat back exit point, seat exit point, H point (the connection point between the human torso and the thigh is the hip point, and the hip joint in the human body template.) The distance from the center of the seat area axis is equal in the vertical direction.
The functional size reflects the ergonomic considerations of the seat. For example, if the backrest does not have sufficient support for the occupant's chest and back, the occupant will feel uncomfortable and feel tired when driving for a long time; such as a seat cushion The exit point is relatively small, and the leg pressure is not concentrated on the main blood vessels behind the knee and the leg bends of the nerve distribution.
At the same time, when considering seat comfort, it should also be noted that there should be no sutures and molding lines in the high pressure area of ​​the seat.
2, body pressure distribution
a, when choosing a seat, it should be noted that the pressure of the seat cushion and the backrest should be evenly distributed.
b, the contact area on the seat cushion and backrest (this is also the reason for the bucket seat).
Poor body pressure distribution can cause pressure on the occupant's body and limbs, hinder blood circulation, and feel uncomfortable when used for a long time.
3, the design of the headrest and slide rails
The design of the headrest and the slide rail not only affects the handling comfort during the driving process, but also relates to the safety of the vehicle inside the vehicle. The well-designed headrest and the slide rail can play a good energy-absorbing role in the accident process. Thereby reducing the impact on the personnel inside the car, so the comfort of the seat headrest and the slide rail can not be ignored in the process of selecting the car.
4, the whole chair hardness
A seat that is too hard can make people feel uncomfortable. The seat is too soft, which can cause people to be too much embedded in the seat. It is not easy to change the riding position and cause fatigue.
After you understand the reasons for the comfort of the seat, you can continue to understand the car seat configuration with these principles and make the right choices in the process of selecting the car.
Seat configuration
1, electric adjustment seat
The electric adjustment seat is the earliest manual adjustment seat that was introduced in 1921 compared to the manual seat. The manual adjustment method requires the member to first relax the locking mechanism of the seat through the handle, then move the seat by changing the posture and position of the body, and finally relax the handle of the locking mechanism to fix the seat at the selected position. . The active force-applying side of this adjustment mode is the passenger on the seat, and the adjustment of the seat is not very convenient.
The power seat is composed of a seat cushion, a backrest, a headrest, a skeleton, a suspension and an adjustment mechanism. When the electric adjustment seat is adjusted, the seat is the force application, and the passenger can move the seat by simply pulling the control button without actively changing the posture of the body. The power seat also provides a more precise adjustment position. The use of the power seat allows the driver to easily find the driving posture that suits him or her, providing a good view, improving driving safety and reducing driving fatigue.
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