V-Shaped Shoe Spring Structure for Heel-to-Toe Energy Return

Instead of absorbing shock passively with foam or gel, the patent inverts the approach by using active spring elements that store and return energy dynamically. The spring board and spring elements actively propel the foot forward, transforming the passive shock absorption function into an active propulsion function that maintains natural movement timing.

The patent changes the physical parameters of the shoe structure by introducing spring elements with specific stiffness values and a spring board with controlled flexibility. These parameter changes allow the system to provide both shock protection and maintain rapid natural movement timing through elastic energy storage and release.

The spring elements and spring board are designed to automatically respond to foot movement without requiring conscious control. The system self-regulates by compressing during impact and propelling forward during the gait cycle, maintaining natural mechanics coordination while providing foot protection.

The patent transitions from static shock absorption materials to dynamic spring elements that adapt their response based on the phase of the gait cycle. The spring elements remain compressed during weight acceptance and actively push off during propulsion, dynamically supporting natural mechanics coordination.

The patent converts the harmful impact forces into beneficial propulsion by using spring elements to store energy during compression and release it during the push-off phase. This transforms the previously harmful shock into useful mechanical energy that enhances running performance while still protecting the foot.

The spring elements are pre-positioned and pre-loaded to be ready for immediate energy return. During the gait cycle, the springs compress in advance during the weight acceptance phase, storing energy that is then released during propulsion, providing performance enhancement without compromising foot safety.