Humanized Door Lock with Single-Step Deadlock Release
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Solution Overview
Problem
Current door locks with deadlocking mechanisms require complex operation, making it difficult for individuals, especially the elderly, disabled, and young children to open doors, especially when hands are occupied.
Innovation Solution
A humanized door lock design where the inside handle operation mechanism simultaneously controls the latch, security hook, and deadlocking rotary knob, allowing the door to be opened with a single handle operation without prior deadlocking knob release, featuring independent mechanisms for enhanced convenience and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a deadlocking mechanism with rotary knob is used to improve door security, then door security is improved, but the operation complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent merges the deadlocking function and the door opening function into a single integrated mechanism. The inside handle operation mechanism simultaneously controls both the latch release and the deadlocking rotary knob release, allowing both functions to be performed with one action rather than requiring separate operations for each function
Solution Approach 2:
The inside handle operation mechanism is designed as a multi-functional component that performs multiple tasks: it operates the latch, releases the deadlocking rotary knob, and enables door opening. This single mechanism handles what would traditionally require multiple separate mechanisms, improving ease of operation while maintaining security
2Reliability
If a deadlocking mechanism requiring two-step operation is used, then door security is improved, but the time required for door opening increases
Solution Approach 1:
The mechanism is designed so that when the inside handle is pushed, the deadlocking rotary knob is automatically released in advance before the latch is fully disengaged. This preliminary release action eliminates the need for a second manual operation step, reducing the total time required to open the door while maintaining the security function
Solution Approach 2:
By combining the latch operation and deadlocking knob release into a single simultaneous action triggered by pushing the inside handle, the patent eliminates the sequential two-step process, thereby reducing the time loss associated with multiple operations
3Ease of operation
If a conventional deadbolt based deadlocking structure is used, then deadlocking function is provided, but the constraint against directional movements is insufficient
Solution Approach 1:
The patent employs a security hook with an asymmetric geometry that provides different constraint characteristics in different directions. The hook shape is designed to effectively resist forces from multiple directions (leftward, rightward, frontward, rearward) by leveraging its asymmetric form, which naturally provides better mechanical advantage and constraint compared to a conventional symmetric deadbolt
Data Source
AI summary
A humanized convenient door lock includes a lock housing, a latch, a security hook, an outside handle operation mechanism, an inside handle operation mechanism, a cylinder driving mechanism, and an inside deadlocking rotary knob driving mechanism. The inside handle operation mechanism drives and controls the latch, the security hook, and the inside deadlocking rotary knob driving mechanism. To open the door, it only needs a one-time operation by pressing down a handle, thereby providing ease and convenience. The design is a humanized one, making it particularly suit for the needs of the disabled and the elderly and for urgent door opening.