Electric Tool Setting Lock Mechanism

The patent implements a lockable state that can be activated before settings are adjusted. When the locked state is active, the switching options are disabled, preventing accidental changes. The user must first unlock the device (by entering a code or using a specific sequence) before making any setting adjustments, thus ensuring that once settings are changed, they cannot be accidentally modified again.

The patent applies different operational states to different functions of the device. The switching options have different accessibility levels: some functions remain accessible while others are locked. This allows selective protection of critical settings while maintaining ease of operation for non-critical functions, creating localized control over accessibility.

The patent implements a dynamic locking mechanism where the accessibility of switching options changes based on the active state. The device can transition between locked and unlocked states, allowing settings to be flexible when needed and stable when required. The control unit dynamically enables or disables switching options based on whether the locked state is active, providing adaptability while maintaining reliability.

The patent introduces an intermediary mechanism (the locked state controlled by the control unit) that mediates between the user's desire to change settings and the need for setting stability. This intermediary layer allows authorized changes (when unlocked) while preventing unauthorized or accidental changes (when locked), thus resolving the contradiction between flexibility and stability.

The patent makes the control unit universal by enabling it to receive control signals from multiple sources: both the integrated user interface on the device and external terminal devices. This multi-functionality allows the same control unit to handle settings adjustment through different interfaces, providing adaptability without requiring separate control mechanisms for each interface type.

The control unit serves as an intermediary that receives signals from both the user interface and terminal devices, processes them uniformly, and applies the same locking mechanism regardless of the signal source. This intermediary approach allows multiple access points while maintaining a single, manageable control structure, thus providing versatility without proportionally increasing complexity.