Door Lock Mechanism With Guide Sleeve And Multi-Orientation Cross-Hole
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Solution Overview
Problem
Conventional door lock mechanisms require precise alignment and orientation of the locking lever and knob during assembly, making installation difficult and time-consuming, especially in blind assembly scenarios.
Innovation Solution
A door lock mechanism with a guide sleeve and cross-hole design that allows the locking lever to be inserted in multiple orientations and a guide sleeve to align the lever during assembly, along with a locking mechanism that can be actuated between locked and unlocked states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the locking lever and knob are designed with a single precise alignment requirement, then the locking mechanism achieves reliable engagement, but the installation process becomes difficult and time-consuming
Solution Approach 1:
The locking bar is designed with a longitudinal cross-hole that can rotate relative to the locking lever, allowing the assembly to adapt to different installation orientations. The cross-hole receives the locking lever in multiple positions (0度和90度), providing dynamic flexibility during installation while maintaining reliable engagement through the locking mechanism.
Solution Approach 2:
The design changes the geometric parameter of the locking bar by introducing a cross-hole with specific dimensional relationships (width greater than lever thickness). This parameter change enables the locking lever to be inserted in multiple orientations, transforming a single-alignment requirement into a multi-orientation solution that reduces installation difficulty.
2Manufacturing precision
If the locking knob has only one rotational position for assembly, then the locking lever can be precisely inserted into the knob slot, but the installation process becomes blind and frustrating
Solution Approach 1:
The locking bar with its rotatable cross-hole provides dynamic adjustment capability during installation. The installer can insert the locking lever in either 0度 or 90度 orientation, and the cross-hole can be rotated to the correct position, eliminating the need for precise pre-alignment and reducing installation time.
Solution Approach 2:
The cross-hole acts as an intermediary element between the locking lever and the locking mechanism. It receives the locking lever in multiple orientations and then transmits the force to the locking mechanism, serving as a flexible mediator that decouples the precision requirement from the installation process.
3Reliability
If the locking lever must be inserted into the knob slot in a specific orientation, then the locking mechanism functions correctly, but the installer cannot see the mating parts during assembly
Solution Approach 1:
The cross-hole design allows the locking lever to be inserted in multiple orientations (0度 or 90度), providing the installer with visual feedback and alignment options during assembly. The installer can see the locking lever entering the cross-hole from various angles, making the blind assembly process more controllable while maintaining reliable locking function.
Data Source
AI summary
Improved door lock mechanisms and kit for assembly into the same. The door lock mechanisms include a guide sleeve having a tapered portion for guiding a locking lever into a cross-hole of a locking bar. The cross-hole also allows the locking lever to be inserted into the cross-hole at multiple different orientations of the locking bar.