In life, there are many small designs, small labels, it seems that there is no significance, but it has always existed. These things are not the product designers who want to think, in fact, there is a useful place, some are really not thinking!
Triangle on the car dashboard
On the dashboard of the car, there will often be a triangle in that piece of gasoline. Its role is to tell people that oil pumps are in the side of the car.
Small rope buckle on the shirt
In contrast to the shirt, you can often see the small rope buckle. It is not used by it now, but this design has existed in the 1960s.
The shirt is easy to wrinkle, if people have no hangers in hand, and want the shirt to hang wrinkles, you can use this small mouth to hang the shirt on the nail of the locker.
Why is the bottom of the wine bottle be curved?
On the one hand, it is to control the pressure in the bottle in the process of adding soft patches.
On the other hand, the sediments in the wine are easily “lock” in this narrow curved bottom space, and it is not easy to be fell out.
Why is there a small hole in the top of the tape measure?
This is to secure the tape measure with a small nail when measuring large objects, and do not allow it to slide easily.
Why is there a small hole in the bottom of the aircraft window?
The window of the aircraft is generally composed of three glasses. With this small hole, it is possible to adjust the air pressure, and the higher air pressure in the cabin directly acts on the window of the outermost layer. If the pressure regulation reaches the limit, it will only be the outermost glass crush, and the internal glass is intact.
At the same time, the small hole can also serve as a fog and moisturizing, so that people can clearly see the scenery outside the window.
Tapped pocket of jeans pockets
Jeans is popular in the mid-19th century, this small pocket is to give the gold worker. Although people now don’t use a pocket watch, this design is still circulating.
Sub-visual part of the car
It seems that it is used to hang something, but in fact, its role is that if there is a car to open a big light behind, it will not know the rear view mirror, you can adjust this “convex” angle. .
There is a small hole at the bottom of the lock
It has two effects: First, if the lock is rusty, it can pour the lubricant from the small hole; Second, because the lock is usually used outside the door, often rain, leaking rainwater From the small hole at the bottom, the water is prevented from rusting.
There is a circular hole on the top of the ballpoint pen cover
This is because, when I have a child to play a pen, I accidentally swallow the pen and almost kill. In order to prevent the occurrence of tragedy, the ballpoint author opened “pores” on the pen cover. If there is a child to swallow the pen, “pores” can maintain a point of air.
A small bag of cloth when you buy new clothes
When buying new clothes, the store often gives a small cloth and buttons. The button is to replace the buckle that may be accidentally falling in the future, and the average person can guess. So what?
This is actually merchant in order to make consumers test detergent and water temperature. The fabric and clothing on the clothes are the same. When do not impair the garment, you can experiment on the fabric first, see how it is best.
Circular holes on canvas shoes
Many people think that their roles are ventilated, but in fact, they can also wear the laces from here, providing the thin man with another lace, tightening the shoes.
Why is there a hair ball in the top of the knitted cap?
It is now desirable, but the initial design is to protect the head of the sailor. When they squat, don’t have to worry about hitting the ceiling.
So, every person is familiar but behind the small design behind it, it has its own principle.
Information: Science China
Edit: Bi Yangjing