Introduction to six functions of spring
1. Measurement function
We know that within the elastic limit, the extension (or contraction) of the spring is directly proportional to the action of external force. The spring scale is made by making full use of the characteristic of spring.
2. Pressing function
Careful observation of various electrical switches will find that one of the two contacts of the switch must be equipped with a spring to ensure that the two contacts touch closely and have good conduction. If the contact is poor, the resistance at the touch will increase, and the heat generated when the current passes will increase. In serious cases, the metal at the touch will melt. The two metal columns of the bayonet lamp cap are equipped with springs for good touch; So that the central metal sheet of the screw lamp cap and the connecting metal sheet of all sockets are basically reeds, and their function is to make both sides touch closely to keep the same good. In the magnetic tape, there is a phosphor bronze reed, which makes full use of the elastic force generated by its bending deformation to make the magnetic head in close contact with the magnetic tape. There will be a long coil spring in the stapler. On the one hand, it is used to tighten the staples. On the other hand, when the front nail is pushed out, the back nail can be sent to the front for comfortable pushing out. In this way, one nail can be pushed to the front automatically until all the nails are pushed out. Many machines feed automatically and the bullets in automatic rifles are loaded automatically by the function of springs. In addition, like the clip for holding clothes, the ball point pen and the clip on the pen cover make full use of the compression function of the spring to clamp on the clothes.
3. Reset function
The spring deforms under the action of external force. After the external force is removed, the spring can recover. Many tools and equipment are basically reset by making full use of the characteristic of spring. For example, the hinges of the gates of many buildings are equipped with return springs. After people enter and leave, the doors will reset automatically. People also make full use of this function to make automatic umbrellas, automatic pencils and other supplies, which is very convenient. In addition, various buttons and keys also need return springs.
4. Push function
Mechanical clocks, clocks and clockwork toys are basically driven by tightening the clockwork. When the spring is tightened, the spring produces bending deformation and stores a certain elastic potential energy. After release, the elastic potential energy is converted into kinetic energy and driven to rotate by the transmission device. In toy gun and starting gun and military, it also makes full use of one of the characteristics of spring.
5. Buffer function
A spring is installed between the locomotive and vehicle frame and the wheel to make full use of the elasticity of the spring to reduce the bumpiness of the vehicle.
6. Vibration and sound function
When air flows through the spring holes in harmonica and accordion, it impacts the reed and the reed vibrates and makes a sound.
We know that within the elastic limit, the extension (or contraction) of the spring is directly proportional to the action of external force. The spring scale is made by making full use of the characteristic of spring.
2. Pressing function
Careful observation of various electrical switches will find that one of the two contacts of the switch must be equipped with a spring to ensure that the two contacts touch closely and have good conduction. If the contact is poor, the resistance at the touch will increase, and the heat generated when the current passes will increase. In serious cases, the metal at the touch will melt. The two metal columns of the bayonet lamp cap are equipped with springs for good touch; So that the central metal sheet of the screw lamp cap and the connecting metal sheet of all sockets are basically reeds, and their function is to make both sides touch closely to keep the same good. In the magnetic tape, there is a phosphor bronze reed, which makes full use of the elastic force generated by its bending deformation to make the magnetic head in close contact with the magnetic tape. There will be a long coil spring in the stapler. On the one hand, it is used to tighten the staples. On the other hand, when the front nail is pushed out, the back nail can be sent to the front for comfortable pushing out. In this way, one nail can be pushed to the front automatically until all the nails are pushed out. Many machines feed automatically and the bullets in automatic rifles are loaded automatically by the function of springs. In addition, like the clip for holding clothes, the ball point pen and the clip on the pen cover make full use of the compression function of the spring to clamp on the clothes.
3. Reset function
The spring deforms under the action of external force. After the external force is removed, the spring can recover. Many tools and equipment are basically reset by making full use of the characteristic of spring. For example, the hinges of the gates of many buildings are equipped with return springs. After people enter and leave, the doors will reset automatically. People also make full use of this function to make automatic umbrellas, automatic pencils and other supplies, which is very convenient. In addition, various buttons and keys also need return springs.
4. Push function
Mechanical clocks, clocks and clockwork toys are basically driven by tightening the clockwork. When the spring is tightened, the spring produces bending deformation and stores a certain elastic potential energy. After release, the elastic potential energy is converted into kinetic energy and driven to rotate by the transmission device. In toy gun and starting gun and military, it also makes full use of one of the characteristics of spring.
5. Buffer function
A spring is installed between the locomotive and vehicle frame and the wheel to make full use of the elasticity of the spring to reduce the bumpiness of the vehicle.
6. Vibration and sound function
When air flows through the spring holes in harmonica and accordion, it impacts the reed and the reed vibrates and makes a sound.
