Food processing device

The patent replaces the traditional mechanical safety interlock system with an optical detection system. A light source emits light through a light channel, and a light sensor detects the light to determine the position of the pusher member. This optical system eliminates complex mechanical moving parts while maintaining the safety function, directly resolving the contradiction between reliability and device complexity.

The patent introduces a light channel as an intermediary medium between the light source and light sensor. The light channel guides the light path and works in conjunction with the pusher member to detect its position. This intermediary approach enables the safety detection function without requiring direct mechanical contact or complex mechanical linkages, thereby improving reliability while reducing mechanical complexity.

The patent substitutes mechanical safety interlock mechanisms with an optical detection system consisting of a light source, light channel, and light sensor. This optical system has no moving parts that can wear or fail mechanically, eliminating the failure risks associated with mechanical components while maintaining effective safety functionality.

The patent extracts the safety detection function from the mechanical domain and implements it in the optical domain. By removing mechanical moving parts from the safety interlock system and using only static optical components (light source, light channel, sensor), the system eliminates the inherent failure modes of mechanical systems while preserving the safety function.