The TWS earphone industry chain has been booming recently. Currently, the TWS Bluetooth earphones on the market are quite diverse, and almost every company is designing, manufacturing, and producing this popular product, TWS Bluetooth earphones. But there is still unexplored virgin land, and there is a significant expectation gap, which is the magnet.

Through disassembly, it can be seen that at least two magnets are needed for the charging case of each TWS earphone, and one magnet is required for each corresponding earphone. So each pair of headphones requires 4 magnets. Earphone magnet.

In addition to headphones, a greater potential demand lies in smartwatches. Similarly, by dismantling the three WATCH, it was discovered that there are 6 magnets in the charging dock! At least 3 pieces are needed inside the watch!

Let's take a look at the knowledge that a qualified structural engineer needs to know about the structure of headphones:

As an essential electronic component for headphones, the speaker unit usually uses a 10mm or 13mm dynamic coil sound unit. However, some manufacturers also use customized 5.8mm full frequency speakers, which are characterized by high separation and relatively sufficient low-frequency. Here, it should be noted that the power of the headphone speaker unit is generally 3mW or 5mW.

Let's take a look at magnets, which are essential materials. At present, the magnetic materials commonly used are neodymium iron boron magnets and magnetic force N52. Here, we will introduce magnets, which are divided into two types: magnets and non magnets. Magnets are magnets that can maintain magnetism for a long time. The production process is to first make a mold for the magnet, and then put rare metals such as neodymium, aluminum, iron, boron, and other materials into a melting furnace for melting, Afterwards, pour the melted iron into the previously prepared magnet mold, cool it down, and then re polish it with a grinding wheel to various shapes. Generally, for the magnets inside our earphones, you don't need to pay for the mold fee, only the cost of grinding wheel tools and fixtures. The newly made magnet needs to be magnetized, and please note the direction of magnetization when producing the magnet engineering drawing. The size of the magnetic force should be determined according to one's own product. Many people don't understand the meaning of N52 above, some are N35, N48. In fact, this is the size of magnetic force, usually from n35 to n52 in order of performance. The larger the number, the higher the performance, which means the stronger the magnetic force. The same price also becomes more expensive. According to the temperature coefficient, it can also be divided into n levels, m levels, h levels, sh levels, etc.