HIGH FREQUENCY HEATER

摘要

PROBLEM TO BE SOLVED: To prevent electromagnetic wave in a heating chamber from passing through the motor shaft penetrating part and leaking through a gap for heat insulating a motor fixing plate and a motor due to antenna effect of the side pressure spring of a weight sensor motor. SOLUTION: A conical reducing section 10c is provided at the motor shaft penetrating part 10a of a motor fixing plate 10 and small protrusions 10b are provided, at a constant interval, on the outer circumference at the base part of the conical reducing section 10c. A simple and highly reliable structure for preventing leakage of electromagnetic wave can be obtained inexpensively without requiring any extra component.