Hybrid Brake Torque Control for Vehicle Doors and Flaps

The patent combines a permanent brake mechanism with a switchable loading device to create a hybrid braking system. The permanent brake provides a baseline braking torque that can be precisely adjusted through mechanical preloading, while the switchable loading device adds or removes additional braking force as needed. This merging of two braking mechanisms allows for both precise torque control and operational flexibility.

The permanent brake utilizes adjustable mechanical parameters (such as spring preload or friction element positioning) to precisely control the baseline braking torque. By changing these physical parameters during manufacturing or setup, the system achieves accurate and repeatable braking torque values that cannot be obtained with friction-based switching alone.

Instead of continuous power supply, the system uses periodic or on-demand activation of the switchable loading device. The permanent brake maintains the holding position passively without energy consumption, and the switchable component is activated only when position changes are needed. This periodic action dramatically reduces energy consumption while maintaining reliability.

The permanent brake is designed to self-maintain the holding position without external power input. Once engaged, the mechanical braking force automatically sustains itself through gravity and friction, requiring no continuous energy input. The system serves itself by utilizing the inherent physical properties of the brake mechanism to maintain position.