Adjustable Backset Mortise Lock with Modular Spacers
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Solution Overview
Problem
Mortise locks are typically manufactured for specific backsets, making it impossible to easily replace them with locks of different backsets without matching dimensions, leading to manufacturing inefficiencies and limited consumer options.
Innovation Solution
An adjustable backset mortise lock design that includes a housing with adjustable depth and spacers, allowing the latch bolt and dead bolt to extend further, enabling the same lock to be adapted for various backsets by modifying the depth and reach during manufacturing or installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If mortise locks are manufactured for specific backsets, then manufacturing precision and reliability are improved, but manufacturing efficiency and adaptability deteriorate due to the need to produce multiple lock models
Solution Approach 1:
The latch bolt is designed with adjustable positioning capability through threaded engagement with the guide, allowing the backset dimension to be dynamically changed without replacing the entire lock mechanism. This enables a single lock model to serve multiple backset requirements
Solution Approach 2:
The lock mechanism incorporates universal features such as standard receivers and spacers that allow the same basic lock to be adapted for different backsets, making one product serve multiple functions and reducing the need for multiple specialized models
2Adaptability or versatility
If multiple mortise lock models with different backsets are manufactured, then adaptability to different door configurations is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The backset adjustment capability is segmented into modular components including spacers and adjustable latch bolt positioning mechanisms, allowing independent adjustment without changing the entire lock assembly
Solution Approach 2:
Spacers are introduced as intermediary elements between the lock housing and door frame to achieve different backset dimensions without modifying the core lock mechanism, simplifying the overall system design
3Reliability
If replacement mortise locks must match exact dimensions, then reliability of door security is improved, but ease of operation and consumer flexibility deteriorate
Solution Approach 1:
The adjustable latch bolt positioning allows the lock to be dynamically configured for different backsets during installation, maintaining security reliability while providing installation flexibility
Solution Approach 2:
The backset dimension parameter can be changed through simple adjustments of the latch bolt position and spacer installation, allowing flexible replacement without compromising security requirements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the production of mortise locks with multiple backsets from a single manufacturing setup, reducing costs and providing consumers with flexibility in choosing locks that fit different door configurations without the need for multiple lock models.
Implementation Method 1
the guide having a threaded front end and opposing back end, the threaded front end of the guide threadingly engaging a threaded boss extending out of the back end of the latch bolt
Implementation Method 2
a latch bolt having a front end and an opposing back end and biased to normally extend from the front of the housing
Data Source
AI summary
The mortise lock of the invention has an adjustable backset employing a latch bolt spacer, a dead bolt extender and two body spacers between the mortise lock body and mortise lock face plate. All the spacers are removable.