The elastic design of the metal dome array ensures stable contact between the earbuds and the charging case or audio device, preventing charging interruptions or unstable signal transmission caused by poor contact. High-quality metal spring-loaded contact arrays can achieve a service life exceeding one million cycles, meeting the demands of frequent headphone usage.
Headphone Charging Interface: In TWS Bluetooth earphones and open-ear headphones, metal dome arrays connect to charging case terminals, establishing stable electrical connections to ensure rapid and reliable charging. For instance, 2-pin spring contact arrays handle basic charging functions by providing positive and negative polarity connections; 3-pin spring contact arrays additionally detect earphone battery levels beyond charging.
Headphone Plug: Within the plug assembly of wired headphones, metal spring contact arrays ensure a stable connection between the headphone plug and the audio device jack. They deliver reliable contact and conductivity while shielding against electromagnetic interference to minimise impact on audio quality.
Internal Headphone Structure: In bone conduction headphones, for instance, spring contact arrays connect the transducer unit to the housing, providing elastic support to ensure vibration output and reset. The design and distribution of these connection points influence the headphone's sound quality.
Beryllium Copper: Exhibits high elasticity, excellent electrical conductivity, and superior corrosion resistance. Frequently employed in components demanding high durability, such as earphone jack contacts.
Copper Alloys: Offer good electrical conductivity at a relatively lower cost. Performance can be enhanced through surface treatments, making them widely used in charging contacts and signal transmission contacts for earphones.
Stainless Steel: Provides high strength and exceptional corrosion resistance. Suitable for contact components requiring structural support and protection.
