Lock Status Indicator Mechanism with Directional Escutcheon
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Solution Overview
Problem
Existing door locks lack a clear visual indicator for their lock/unlock status and operation direction, making it difficult for users to determine the lock's condition and how to operate it effectively.
Innovation Solution
A locking assembly with a visible indicator that moves between a locked and unlocked position, accompanied by an operation indicator on the escutcheon that signals the necessary input direction for locking and unlocking, ensuring the user can easily determine the lock's status and how to operate it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a visual indicator is added to show lock status, then user understanding of lock condition is improved, but device complexity increases
Solution Approach 1:
The indicator assembly is nested within the lock core structure, with the indicator arm integrated into the tailpiece. The flag carrier is positioned within the escutcheon, creating a compact nested arrangement that provides visual feedback without adding significant external complexity to the locking mechanism.
Solution Approach 2:
The indicator arm acts as an intermediary element that translates the internal lock status (locked/unlocked positions of the lock core) into visible visual signals (flag positions) for the user. This mediator component bridges the gap between the mechanical locking function and the information display function.
2Ease of operation
If operation indicators are added to show input direction, then ease of operation is improved, but manufacturing complexity increases
Solution Approach 1:
The escutcheon incorporates colored fills (first colored fill and second colored fill) in debossed areas to provide visual guidance for lock and unlock operations. The color coding system intuitively indicates the required input direction, making the operation clear to users while using standard manufacturing techniques for creating the colored surfaces.
Solution Approach 2:
The operation indicators with colored fills are pre-formed on the escutcheon during manufacturing, providing advance visual guidance to users before they operate the lock. This preliminary preparation of operational information eliminates the need for additional user education or complex operational procedures.
3Loss of information
If the visible indicator is positioned to show lock status, then information display is improved, but risk of false indication increases
Solution Approach 1:
The indicator arm is mechanically linked to the lock core through the tailpiece, creating a direct feedback mechanism. The indicator arm automatically moves to reflect the actual lock status (locked or unlocked position), providing reliable real-time information about the locking state without requiring separate sensors or complex control systems.
Solution Approach 2:
The indicator assembly is self-actuating through the mechanical connection to the lock core. The movement of the lock core itself directly drives the indicator arm to the appropriate position, eliminating the need for external actuators or control mechanisms and ensuring the indicator always accurately reflects the current lock state.
Data Source
AI summary
A visual indicator of lock status is disclosed. An operation indicator signaling to an operator a lock operator input direction and an unlock operator input direction to signal to the operator operations that will lock and unlock the locking device is also disclosed.