Yesterday was Goddess Day, and this belated blessing I hope fans can accept. Happy Holidays to the little ladies! I don't know if there is a question that everyone has ever thought about: do pregnant women wear seat belts in the end? After all, many pregnant women feel that seat belts will strangle their stomachs. Here we tell you to wear your seat belt and wear it correctly.
1. Do pregnant women need to wear seat belts?
Before seeing someone on a certain hu answered that pregnant women can buy their own special seat belts for pregnant women online, and the advertisements are written for the special research and development of the size of pregnant women, it is said that it can prevent the stomach from being strangled when braking sharply. Here I tell you that such a seat belt does not have sufficient practice to prove that it can protect pregnant women in the collision, these devices may cause the seat belt to relax and twist, resulting in the seat belt can not work properly, and even affect the protection of pregnant women in the collision.
The seat belt for pregnant women is properly fastened
It just so happened to be Women's Day, and I incarnated as a pregnant woman to teach everyone, especially expectant mothers, how to use seat belts correctly when driving or riding. First, the shoulder strap of the seat belt should be placed in the shoulder blade, rather than clinging to the neck, and it is easy to cut when braking sharply close to the neck, and it is easy to slip off when you put it too low. Second, the belt of the seat belt must be placed under the abdomen, close to the hip bone, so that the main reason for the impact generated when braking sharply acts on our bones, thereby protecting our soft internal organs. So should pregnant women wear seat belts? Be sure to wear a seat belt, as long as the three-point seat belt is used correctly, it will not cause harm to the fetus. Remember that the most important thing to protect the fetus is to protect the mother, and only if the mother is safe, the fetus can be safe.
Second, Laura's firmness, "women's equality" became a reality in the car
Do you know who was the first company to apply a three-point seat belt to a car? Who was the first to collide between a female and a pregnant dummy? Here's the answer – Volvo.
In fact, in the early car crash test dummies only adult male models, Volvo let women and pregnant women dummies join the crash experiment, so that everyone is equal in front of safety. In fact, there is a very interesting story about Volvo's maternity dummy, let's start with a girl named Laura.
Dummy crash test
This girl is not simple, with one of her own research results to become a Volvo car safety engineer, and the results of this research have also saved the lives of countless pregnant women and fetuses. In 2000, she was a senior in mechanical engineering, and her graduation project was a computer-simulated crash test dummy. But this crash test dummy was different from all the car companies at that time, it was a maternity dummy, inspired by her mother. Her mother is a saleswoman and has conceived 4 children in total, so Laura has a deep understanding of the difficulty of pregnant women.
For example, pregnant women are injured when they are driving or riding in an accident, which is completely different from normal people. In the United States, 120,000 pregnant drivers have accidents every year, and 350-700 fetuses lose their lives due to car accidents every year. But strangely enough, no car company did crash tests on pregnant women at the time, including the National Highway Traffic Safety Administration in the United States at the time. It is only a requirement for car companies to conduct crash and safety tests on adult and child passengers, and even experts and obstetricians are not optimistic about Laura, believing that this is a very difficult study. But Laura didn't think so, and it would be a grave mistake to give up the lives of special people because of difficulties, so Laura decided to make some changes. She took her graduation project to the major car companies to find help, but she traveled to almost all the car companies in the United States, but none of them were willing to support his research direction, until Volvo, and only Volvo was willing to cooperate with Laura to study pregnant women's dummies, and encouraged L aura to continue to study master's degrees.
Pregnant women dummy crash test
After graduating with a master's degree, Raul joined Volvo to continue the research. She named the maternity dummy Linda, which was actually her mother's name, and later trials showed that Laura's persistence was worthwhile, and the maternity dummy Linda made a huge contribution to the safety of volvo models. So what changes can a pregnant dummy bring to crash testing?
Third, Volvo's safety source: crash test regardless of cost
You may have seen the video of the car dummy crash test (friends who have not seen it, please watch the video inserted below). In the Volvo Car Safety Center Crash Lab, you can see almost every day that for the accuracy of crash test results, there are hundreds of adult male and female dummies of different heights, weights, genders, and child dummies of different ages. Because men, women, and children have different skeletal structures and different ways of reacting to accidents, these dummies have delicate sensors in their bodies to collect data from collisions. Therefore, the cost of each test dummy is as high as millions of yuan. One of the most striking of these is a baby dummy weighing only three kilograms, and a virtual maternity dummy named Linda.
Since the 1950s, Volvo has been studying real car accidents, set up a special traffic accident investigation team, the study found that pregnant women and children are the most vulnerable to accidents, and the cause of fetal death in pregnant women is not the tight seat belt we imagine, but the strong inertia at the time of the accident separates the fetus from the placenta, resulting in the fetus losing its source of nutrition. Through the trial data of linda, a pregnant woman dummy, the three-point seat belt and airbag can still provide a higher level of safety protection for pregnant women and fetuses.
In fact, the pregnant woman dummy Linda we are talking about is not a simple dummy model, nor is it a physically existing dummy. Because the human body is one of the most wonderful structures in the world, creating a physically existing pregnant female dummy is almost impossible to achieve in the present, and even if it can be created, there is no guarantee that every dummy is exactly the same. So Linda is actually an extremely complex "finite element computer model" built by countless crash tests and a large amount of data verification. In this model, Linda has the same ribs as humans , soft tissues in the abdomen, hip bones, a pregnant uterus, amniotic fluid, and a 36-week-old baby. And its body size and pregnancy center can also be adjusted to the specific passenger, so as to obtain accurate test data. These data are an important basis for Volvo Cars engineers to develop safer cars, of course, all based on the huge investment of Volvo and engineer Laura in a few years of time and money.
Volvo
It's hard to imagine that without the joint efforts of L aura and Volvo, there might not be collision experiments on pregnant dummies in the world today. Since the advent of the three-point seat belt in 1959, Volvo has wanted to build safer cars for everyone, regardless of gender and physique, beyond the ordinary people represented by crash test dummies, which is one of volvo's values and deserves our highest respect.
Article finally: I am not advertising for Volvo, purely for personal writing needs, I hope you can understand.