Electromagnetic Shoulder Key Lifting Assembly for Reliable Retraction

The patent replaces the manual mechanical operation system with an electromagnetic driving system. The driving coil generates electromagnetic force to automatically extend and retract the lifting body, eliminating the need for manual pulling and pushing. This substitution resolves the contradiction by maintaining ease of operation through automatic control while significantly improving reliability by removing mechanical wear and user error factors.

The lifting assembly performs self-service through automatic extension and retraction controlled by the driving coil. The system monitors and controls the shoulder key position without requiring user intervention for the mechanical movement itself, only for triggering the extension/retraction function. This enhances reliability while maintaining operational simplicity.

The lifting body is nested within the housing when retracted, and the mounting frame with driving coil is integrated into the existing shoulder key structure. This nesting approach allows the complex lifting mechanism to be compactly stored within the device, minimizing impact on handfeel while enabling automatic operation. The structure unfolds only when needed for extension.

The patent introduces a new dimensional aspect by adding the lifting mechanism that extends perpendicular to the device surface. The mounting frame and driving coil are arranged in a configuration that allows extension in the vertical dimension while maintaining a compact profile when retracted, thus adding functionality without significantly increasing the device's footprint or affecting handfeel.

The lifting assembly is segmented into distinct functional modules: the lifting body, mounting frame, driving coil, and magnetic element. Each module performs a specific function and can be independently optimized or replaced. This segmentation manages complexity by organizing the automatic lifting mechanism into manageable components while maintaining high reliability through modular design.

The mounting frame serves multiple functions: it supports the driving coil, provides structural connection between the lifting body and housing, and guides the extension/retraction motion. The driving coil not only provides lifting force but also integrates with the magnetic element for precise positioning. This multi-functionality reduces the number of separate components needed, managing overall structural complexity.