Universal Door Lock Drive Shaft Rotation for Handedness Detection
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Solution Overview
Problem
The existing methods for determining the handedness of door installations, particularly in pre-hung door assemblies, are inefficient and often lead to confusion and errors, resulting in incorrect installations and potential clashes with other doors or fittings, necessitating the availability of both right-hand and left-hand configurations which doubles inventory and storage needs.
Innovation Solution
A method involving a drive shaft rotation mechanism within the door lock system that continues until sufficient bolt extension is achieved for a lock position, with a positioning sensing device to determine the end point of rotation, allowing users to confirm the correct installation via a mobile device communication, thereby simplifying the determination of right or left side door installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pre-hung door assemblies are supplied in both right-hand and left-hand configurations to accommodate different installation requirements, then the adaptability of the door system is improved, but the device complexity and inventory requirements double
Solution Approach 1:
The door lock assembly is designed with a universal mechanism that can function in both right-hand and left-hand door configurations. The drive shaft rotation mechanism automatically adapts to the correct handedness based on the door installation orientation, eliminating the need for separate right-hand and left-hand door assemblies while maintaining full configurational adaptability
Solution Approach 2:
Instead of providing separate door assemblies for right-hand and left-hand configurations, the invention inverts the approach by making the lock mechanism itself reversible and adaptive. The system determines the correct rotation direction (clockwise or counter-clockwise) based on the door handedness, allowing a single universal door assembly to serve both configurations
2Ease of manufacture
If manual methods are used to determine door handedness during installation, then the ease of manufacture is improved, but the measurement precision and reliability of installation are reduced
Solution Approach 1:
The system incorporates a feedback mechanism where the drive shaft rotation is monitored to determine when sufficient bolt extension is achieved. The positioning sensing device provides real-time feedback on the drive shaft position, automatically determining the correct rotation direction and extent based on the door handedness, thereby eliminating manual determination errors while keeping the installation process simple
Solution Approach 2:
The door lock mechanism performs self-determination of the correct rotation direction through its built-in positioning sensing device. The system automatically detects the door handedness and adjusts the drive shaft rotation accordingly without requiring manual intervention or external tools, combining installation simplicity with high determination accuracy
3Manufacturing precision
If the drive shaft rotation continues until sufficient bolt extension is achieved, then the manufacturing precision of the locking mechanism is improved, but the loss of time during installation increases
Solution Approach 1:
The positioning sensing device is pre-configured to detect when sufficient bolt extension is achieved during drive shaft rotation. This preliminary setup allows the system to automatically stop rotation at the precise moment when the locking bolt reaches the correct position, ensuring manufacturing precision while minimizing installation time by avoiding unnecessary rotation or trial-and-error adjustments
Data Source
AI summary
A method is provided for determining right or hand side door installation. A drive shaft of the door lock mechanism is rotated with the bolt in a clock wise direction or a counter-clock wise direction. The rotation continues until there is sufficient extension of the bolt to provide for a lock position of an associated door.