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.
Utilising PET film as the circuit substrate and integrating metal dome contacts, this design achieves circuit switching through mechanical deformation. It offers stable conductivity and extended press endurance, delivering over 500,000 press cycles within a 0.5–1.2mm travel range, with contact resistance below 50mΩ.
The membrane switch's tightly sealed structure minimises dust ingress into internal circuitry. Combined with a dust-proof mesh design, the device achieves an IP54 dust resistance rating. Testing indicates that after 100 hours of continuous operation in dusty environments, this projector accumulates only one-fifth the dust of conventional switches. Heat dissipation performance remains excellent, preventing equipment overheating caused by dust accumulation.
The metal reed switch array constitutes a critical component within the controller's button mechanism, typically comprising multiple metal reed switches. These switches generally employ dome switches (also referred to as ‘metal dome’ or ‘dome switch sheets’), which serve to transmit signals and provide tactile feedback within the controller.
Typically manufactured from PET or PC film with a thickness of approximately 0.1–0.25mm, featuring a decorative layer printed with text, icons, etc., on the surface. Some undergo UV coating or anti-scratch treatment.
Features include tactile response, surface-mount technology, and waterproofing. Membrane switches are employed to enable functions such as play/pause, volume adjustment, and mode switching.
