Bimetal Brake Lining Positioning for Cold Disc Icing

The patent employs a bimetal spring element that utilizes differential thermal expansion of two metals with different expansion coefficients. When temperature decreases, the bimetal element contracts and reduces the air gap between brake lining and disc, ensuring frictional contact to prevent ice formation. When temperature increases, the element expands and increases the air gap, reducing residual friction and wear. This thermal expansion mechanism automatically adjusts the brake lining position according to temperature conditions without external control.

The bimetal spring element functions autonomously based on temperature changes, eliminating the need for sensors, actuators, or external control systems. The element self-adjusts the air gap by responding to thermal conditions, thereby preventing ice formation at low temperatures and reducing wear at high temperatures through automatic, temperature-dependent position adjustment of the brake lining.

The bimetal spring element exploits differential thermal expansion to automatically adjust the air gap. At low temperatures, the element contracts allowing brake lining contact with the disc to prevent ice formation. At high temperatures, the element expands increasing the air gap to eliminate residual friction and reduce wear. This thermal response mechanism dynamically optimizes the balance between ice prevention and wear reduction.

The patent changes the physical parameter of air gap distance based on temperature conditions through the bimetal element's thermal response. The air gap is dynamically adjusted: minimized at low temperatures to ensure contact and prevent icing, and maximized at high temperatures to eliminate residual friction. This parameter change approach optimizes braking performance across different thermal conditions.

The bimetal spring element serves as a self-regulating component that automatically adjusts the air gap in response to temperature changes. No sensors, actuators, or external control systems are required - the element itself senses temperature and executes the adjustment action through its inherent thermal expansion properties, greatly simplifying the system while maintaining reliability.

The patent replaces complex electronic control systems (sensors, actuators, control units) with a passive mechanical-bimetallic element that responds directly to thermal conditions. This substitution of active electronic-mechanical control with a passive thermal-mechanical response mechanism eliminates the need for complex instrumentation while achieving the same functional outcome of maintaining braking reliability.