Low cost ring device structures

Abstract

Methods, systems, and devices for forming a wearable ring device are described. A welding process may use ultrasonic welding to attach an outer lateral surface cover to the inner lateral surface cover, which may form an arcuate frame for the wearable ring device. The welding process may involve ultrasonic welding, which may melt one or more welding features (e.g., welding ribs) to attach the outer lateral surface cover to the inner lateral surface cover. In some examples, the welding features may be located on the outer lateral surface cover, the inner lateral surface cover, or both. To reduce negative effects on fragile components, such as a PCB of the wearable ring device, the fragile components may be disposed in a location away from the welding features. Further, in some cases, a material may be used to cover and shield the fragile components from ultrasonic waves during the welding procedure.