Dome switches, as a common basic component in electronic equipment, play a key role in many fields. Its working principle is based on the elastic deformation of the metal dome, when the external force is applied to the dome, the shrapnel undergoes deformation to change the on/off state of the circuit; after the external force is removed, the shrapnel returns to its original state, and the state of the circuit is also changed.
From the material point of view, the production of shrapnel materials are mainly stainless steel, copper alloy and so on. Stainless steel shrapnel has good corrosion resistance and high hardness, can adapt to the more severe use of the environment, in the outdoor equipment, industrial control and other fields are widely used. Copper alloy shrapnel with its excellent conductivity and good elasticity, in the high conductivity requirements of the electronic equipment favored, such as cell phones, computers and other consumer electronics products, the internal switch is often used copper alloy shrapnel.
In terms of shape design, shrapnel switches have diversified forms, such as common round, square, cross-shaped, etc. Different shapes of shrapnel are suitable for different applications. Different shapes of shrapnel are suitable for different application scenarios. Round shrapnel force is more uniform, in need of stable contact and long life of the switch used more; square shrapnel in the space layout is more compact, can make better use of the space, to achieve efficient circuit connection; cross-shaped shrapnel in some of the contact position has special requirements, need to accurately control the circuit of the on and off occasions to play a role.
The application of shrapnel switch is extremely wide. In the field of consumer electronics, it is the core component of the buttons on cell phones, tablet PCs, remote controls and other devices, and the user's daily clicking operation is precisely through the shrapnel switches to realize the conveyance of various functional commands. In the automotive industry, shrapnel switches are used in automotive dashboard control buttons, window lift switches, seat adjustment switches and other parts of the car, and their reliability is directly related to the convenience and safety of driving operations. In the field of industrial control, shrapnel switches are used in the control panels of all kinds of mechanical equipments, assuming the circuit control tasks of starting, stopping, adjusting and other key operations to ensure the stable operation of industrial production. In medical equipment, such as blood glucose meters, blood pressure monitors and other household medical equipment, as well as professional testing equipment in hospitals, shrapnel switches, due to their stable performance, guarantee the accuracy and reliability of equipment operation and provide support for medical diagnosis.
Nowadays, with the rapid development of science and technology, the shrapnel switch industry is also constantly innovating and progressing. On the one hand, in order to meet the demand for increasingly thin and light electronic products, the shrapnel switch is developing in the direction of miniaturization and ultrathinness to achieve more stable performance in a smaller space. On the other hand, to improve the reliability and life of the shrapnel switch has become an important goal of the industry, through the improvement of material technology, optimization of structural design and other means, so that the shrapnel switch can withstand more times of operation and the test of a more complex environment. In addition, intelligence is also a future development trend of the shrapnel switch, combining the shrapnel switch with intelligent control technology to realize intelligent perception and precise control of the equipment, in order to adapt to the development needs of the Internet of Things era of the Internet of Everything.