Magnetic pogo pin connector in bone conduction Bluetooth headset
When it comes to Bluetooth headsets, everyone must be familiar with them. Especially in recent years, the Bluetooth headset market is in full swing, and major manufacturers are competing to launch their own brands of Bluetooth headsets. Bluetooth headsets can be divided into ear-mounted (wired), neck-mounted (wired), TWS true wireless headsets, etc. Although pogo pins are used in these products, today we are going to introduce a small branch of Bluetooth headsets - bone conduction Bluetooth headsets, which are favored by sports enthusiasts.
Bone conduction headphones may not be known to many people, so what are bone conduction headphones?
Bone conduction earphones refer to earphones that use human bones as the medium to transmit sound to the auditory organs without passing through the external auditory canal and eardrum. Its principle is to convert sound into different mechanical vibrations, and transmit sound waves through the human skull, bone labyrinth, inner ear lymph fluid, screw, auditory center, etc. The principle is shown in the figure below:
The magnetic Pogo pin connector is commonly used in the charging interface of bone conduction earphones, and is used to charge the battery in the earphones to ensure their normal operation.
Don't underestimate this small charging contact, which implies cutting-edge technology. When the human body is exercising, it will sweat a lot. When you wear earphones, it will inevitably cause a lot of sweat on the earphones. 98% of the sweat is water, and the rest is inorganic salts, urea and uric acid.
The charging contact of the earphone will conduct electricity when it encounters water (this voltage is very low and will not cause harm to the human body), so that the surface plating layer on the contact will be electrolyzed slowly, even if it is more than the water The acidic substances in the sweat will slowly corrode this layer of electroplating layer; while the surface electroplating layer plays the role of protecting contacts and increasing conductivity. When this protective layer is damaged, it will cause Poor contact during charging, so the earphones may not be able to be charged normally, and the earphones will become waste products if there is no electricity.
Therefore, the surface treatment of pogo pin connectors and contacts used in sports earphones must at least be anti-electrolysis and anti-corrosion, and on products that may come into contact with the skin, it must also ensure that they will not cause skin allergies. This one has stumped many companies. Our self-developed unique surface coating technology can pass >240 hours of artificial sweat resistance test and salt spray resistance test, which can completely solve the above problems.
