Vehicle Rotating Screen Bracket With Shaft Locking at Fixed Angles

The patent applies preliminary anti-action by introducing a limiting member that proactively prevents harmful rotation before it can damage the rotating mechanism. The limiting member is positioned in advance to block the connecting shaft from rotating beyond safe angles, thereby counteracting the potential harmful effects of external forces or improper user operation before they can compromise the reliability of the rotating mechanism.

The limiting member serves as an intermediary between the connecting shaft and the harmful external forces. It mediates the interaction by selectively allowing rotation within safe angles while blocking rotation beyond those angles, thus protecting the rotating mechanism from damage while preserving the screen's rotatability for legitimate user needs.

The limiting member implements preliminary anti-action by pre-positioning a physical barrier that prevents the connecting shaft from rotating beyond predetermined safe angles. This allows users to manually rotate the screen for convenience while automatically blocking any rotation that could lead to improper use and damage, thus maintaining both ease of operation and reliability.

The limiting member provides self-service protection by automatically preventing harmful rotation without requiring user intervention or complex control systems. The mechanical structure itself enforces the rotation limits, making the system self-regulating and protecting against improper use while maintaining user-friendly operation within safe boundaries.

The patent extracts the protection function from the rotating motor and transmission structure and places it in a separate, simple limiting member. Instead of making the motor and transmission structure more robust, the design removes the protection responsibility to a dedicated component that simply blocks excessive rotation, thereby maintaining reliability without increasing the complexity of the main rotating mechanism.

The limiting member is designed as a simple, inexpensive mechanical component that provides protection through its structural configuration rather than through robust materials or complex mechanisms. This approach uses a simple blocking structure that prevents harmful rotation without requiring expensive or complex engineering in the rotating motor and transmission structure.