Why is there a hole in the middle of the bus seat? It's not small
Today's standard of living has improved dramatically, not only with cars, but also with buses that can run back and forth in the city. With the bus, people upgrade from walking to taking the bus, naturally to save a lot of time, and time is money, waste time is a waste of life, from this point of view, the emergence of the bus, is completely for the benefit of the people.
Born in this era, we must be very familiar with the bus, but in the middle of the bus seat, why is there a hole? Most friends did not observe carefully, resulting in Yu Bai sitting in the car for so many years, in fact, the role of this hole is not small, probably has so many functions.
Nowadays, the improvement of people's living standards is mainly reflected in clothing, food, housing and transportation, and "travel" must be travel. Go out for a trip, either by high-speed rail, or by plane, this of course belongs to long-distance travel, short-distance, the bus is indispensable, as mentioned above, its appearance, greatly improve people's life efficiency, can do big things with small time, save time, is not to cherish the time?
But do you really know about the well-known bus? There is a hole in the middle of the seat, what is it for?
1. Relieve stress.
This is, of course, to relieve the pressure on the seat. The seat is made of plastic, and these plastics must be tough, and people with small weight sit on it, it may not be a big deal, but make a strong man of several hundred pounds, sit on it, so what do you have to do? Therefore, designing a hole in the middle of the seat can relieve the pressure and make the seat able to bear more weight.
