Door Lock Quick Connect Lever Mechanism
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Solution Overview
Problem
Existing lock mechanisms require tools and are often difficult and time-consuming to install on movable structures like doors and windows.
Innovation Solution
A lock mechanism with a quick connect feature using a lever handle connected to a Q-screw or expanding shaft, allowing for installation with only a quarter revolution turn, eliminating the need for separate tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional lock mechanisms are used, then the lock can be securely installed on the door, but the installation process requires separate tools and multiple fasteners, making it time-consuming and difficult
Solution Approach 1:
The patent combines the lever handle, fastening mechanism, and locking function into a single integrated assembly. The lever handle directly engages with the door through an expanding shaft mechanism, eliminating the need for separate fasteners and tools. This merging of components allows the entire lock mechanism to be installed by simply operating the lever handle itself.
Solution Approach 2:
The lever handle serves a dual function: it is both the operating component for locking/unlocking and the installation tool. When the lever handle is actuated during installation, it automatically drives the expanding shaft to secure the lock mechanism to the door, making the system self-installing without requiring external tools or separate fastening operations.
2Reliability
If traditional lock mechanisms with separate fasteners are used, then the installation can be secure, but the process becomes complex and requires multiple components
Solution Approach 1:
The patent integrates the fastening function directly into the lever handle assembly through the expanding shaft mechanism. Instead of using separate screws, bolts, or clips, the lever handle itself contains the fastening capability, reducing the total number of components while maintaining secure installation through the expanding anchoring action.
3Productivity
If a quick connect feature is implemented, then the installation speed is improved, but the mechanism requires a specialized lever design with Q-screw or expanding shaft
Solution Approach 1:
The specialized lever mechanism with Q-screw or expanding shaft is designed to be self-configuring during installation. The lever handle automatically engages with the door structure through its unique mechanism, requiring no additional adjustment or complex assembly steps. The complexity is built into the single lever component itself, which performs both the connection and securing functions through its own motion.
Data Source
AI summary
An apparatus for releasably coupling a lock assembly to a structure. An inner housing and an outer housing are positioned on opposite sides of the structure. An elongate rod extends throughout the inner housing and into the outer housing. The elongate rod is configured to slide axially within an internal bore of the outer housing until a handle engages the inner housing. The elongate rod is configured to couple the inner and outer housing to the structure when the lever is rotated approximately one quarter of a full turn (90 degrees).