The buckle of the seat belt is "bad growth" again [Rumiko Iwasada, a humanitarian car doctor]

"Bad growth" of seatbelt buckles

I have been bothering me lately. "Disease" that was popular about 20 years ago. Although it had been settled for a while, it has "relapsed" again recently.

What is that "disease"? The growth of seat belt buckles.

The seat belt is, needless to say, a safety device. It supports the body in the event of a frontal collision, no, it ties it to the seat and prevents the human body from hitting various parts of the car. According to the emergency physician, people who had died instantly until then are definitely saved.

Until about 30 years ago, when three-point seat belts were required to be fastened to the front seats, in the case of a frontal collision, the driver slammed his head or chest against the handle, causing brain contusion, lung rupture, and heart rupture. That is. The lungs are balloons containing air, and the heart is also a water balloon containing blood, so it is easy to burst if pressed strongly from the outside.

However, when it became mandatory to wear it, there were no cases where it hit the steering wheel, and instant death decreased. You look amazing. However, what has increased at the same time is the rupture of internal organs centered on the lower abdomen.

why?

When a frontal collision occurs, the driver slides forward from the seat surface (submarine phenomenon), and the seat belt bites into the abdomen.

Especially in the case of a compact car, make it firm so that the cabin with people does not collapse. However, because the nose (where the engine is) is short, it cannot absorb the impact, and when it hits, the squirrel jumps up. The seat becomes a slide, and it is easy to submarine.

If the seat belt bites into the abdomen, the internal organs will be destroyed. Small intestine, large intestine, sigmoid colon, mesentery. In many cases, there is still plenty of time between trauma and the start of surgery, but when the liver is damaged, a large amount of bleeding occurs at once. Heavy bleeding-lowering blood pressure-death. If an accident or injury occurs in a place far from the hospital, the probability of not being saved increases at once (so doctor helicopters play an active role!).

The submarine phenomenon occurs

However, readers may be wondering. That's because the video released by automobile manufacturers, etc. is "Collision-fasten the upper body to the seat with a seatbelt-still catch the head that moves forward like bowing with an airbag". .. The submarine phenomenon has not occurred.

Why is it different from reality? When taking such images or conducting a collision test with the Ministry of Land, Infrastructure, Transport and Tourism, the person in charge of the automobile manufacturer sits tightly so that there is no gap between the dummy doll's oshiri and the seat, and the seat belt is fastened in millimeters. This is because the position is adjusted and the winding is done so that there is no looseness.

If you turn it over, you can't get the same effect if you sit loosely and fasten your seat belt properly. The result is seatbelt injuries that occur here and there. If the report of a traffic accident says "died due to internal organ damage ...", you can think that this is almost the case.

Let's sit down so that there is no gap in the oshiri. Fasten your seat belt to the lower part of your hip bone.

As a person who has covered the case where many people died in front of me due to a seatbelt injury, I am more careful about how to sit.

Buckle length and safety are compatible

However, it is.

Recently, the number of cars that have a gap in the abdomen (!) When wearing a seatbelt is increasing. The reason is "because the buckle is long".

A fat person says that the seat belt is hard to fasten, and the buckle is growing steadily. Actually, there was a tendency about 20 years ago, and there was a history of making noise here and there saying "I don't want to die!". After that (not just because of my voice), I feel like it's getting shorter. However, it has grown again in the last few years. Why why why?

After confirming with the developer, he says, "It is safe." But I don't believe it. Because there is enough space in my abdomen to fit in. If you sit down a little, it's really bad. In the event of an accident, he slipped off the seat and the seatbelt seemed to bite into his abdomen, which made him scared.

Mercedes Benz GLA seatbelt buckle. It pops out for a long time, but it fits tightly when attached. The other day, I took a test drive on Mercedes-Benz's "GLA". When I opened the door, a long buckle came into view. Mercedes, did you succumb to the fat voice too!

If you fasten your seatbelt while thinking so, oh! Even though the buckle is long, it fits tightly when attached. As expected, Mercedes. It can be compatible.

Let's be clear here to automakers who can only make types that have gaps. It's omission. Or, if you're doing your best and in that state, you don't have the technology. Or is it unmotivated?

Please make a seatbelt that delicate women can use with confidence. Thank you.

Rumiko Iwasada | Motor Journalist / Writer She has lived in Italy and is actively speaking to the government from a global user perspective. In addition to covering mainly compact cars, she is a non-fiction writer who works to convey the preciousness of life to children. In her response, she wrote an impression from the perspective of an Arafie female user. She is serializing the column "Rumiko Iwasada, a humanitarian car doctor."