Springs have been widely used for a long time. It's an accumulator, and it stores energy. The ancient bow and crossbow were two springs in a broad sense.
Now let's talk about the function of the spring:
1. Buffer function
A spring is installed between the frame and the wheels, and the elasticity of the spring is used to slow down the bumps of the vehicle. Therefore, the spring on each motor vehicle is also quite useful.
2. Vibration sound function
When air flows from the reed holes in the harmonica, accordion, the reeds are impacted, and the reeds vibrate to make a beautiful sound.
3. Measurement function
How are spring scales made? It means that within the limits of elasticity, the elongation (or contraction) of the spring is proportional to the external force. Spring scales are made using this property.
4. Reset function
The spring is deformed under the action of external force, and after the external force is removed, the spring can return to its normal state. Many devices and tools take advantage of this property to reset. For example, the hinges of many building doors are fitted with return springs, and when people enter and exit, the doors automatically soothe. People also use this function to make mechanical pencils, automatic umbrellas and other items, which is very convenient.
