Adjustable Door Lock Mounting Posts for Precise Hole Alignment
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Solution Overview
Problem
Existing door locks with fixed mounting posts require precise drilling of new through-holes during installation, which is difficult and time-consuming, and often results in poor coupling due to imprecision, necessitating enlargement of holes and risking improper alignment.
Innovation Solution
A door lock design featuring adjustable mounting posts with diametrically opposed slots and holes on the outer and inner mounting plates, allowing radial movement of the posts to match the spacing of existing door holes, eliminating the need for precise drilling and ensuring secure coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mounting posts with fixed spacing are used, then the door lock structure is simple, but installation requires precise drilling of new through-holes which is difficult and time-consuming
Solution Approach 1:
The mounting posts are made adjustable through slots that allow radial movement, transforming the fixed spacing design into a dynamic, adaptable configuration. This enables the mounting posts to be positioned at different spacings to match existing door hole configurations, eliminating the need for precise drilling and significantly improving installation speed while maintaining structural simplicity.
2Ease of manufacture
If mounting posts with fixed spacing are used, then the door lock structure is simple, but installation precision deteriorates due to difficulty in drilling precise through-holes
Solution Approach 1:
The adjustable mounting posts with slots allow the spacing to be modified after the door lock is positioned on the door. This dynamic adjustment capability eliminates the need for precise pre-drilling, as the mounting posts can be radially moved to align with existing holes, thereby maintaining structural simplicity while achieving precise alignment without difficult drilling operations.
3Manufacturing precision
If new through-holes are drilled to match fixed mounting post spacing, then mounting post position is precise, but installation time increases due to drilling difficulty and hole enlargement requirements
Solution Approach 1:
The mounting posts are designed with slots that enable radial adjustment, allowing the spacing between posts to be changed to match existing door hole configurations. This eliminates the time-consuming drilling and hole enlargement operations, as the adjustable posts can be directly positioned to align with pre-existing holes, achieving precise mounting post positioning while dramatically reducing installation time.
4Ease of manufacture
If new through-holes are drilled for fixed spacing mounting posts, then mounting post spacing is standardized, but installation complexity increases due to overlapping holes and file enlargement
Solution Approach 1:
The adjustable mounting posts with radial slots provide the benefits of standardized spacing while eliminating installation complexity. The slots allow the posts to be positioned at various spacings to match existing door holes, avoiding the need for difficult drilling operations, overlapping hole management, and file enlargement, thus maintaining standardization advantages without increasing installation complexity.
Data Source
AI summary
A door lock includes a casing mounted in a bare of a door. The casing includes inner and outer coupling seats to which inner and outer mounting plates are mounted respectively. The outer coupling plate includes two diametrically opposed slots located outside the bore of the door. The inner mounting plate includes a plurality of pairs of diametrically opposed holes. The inner mounting plate is rotatable relative to the inner coupling seat to a position in which one of the plurality of pairs of holes is aligned with the slots. Two mounting posts are extended through the slots and through two through-holes in the door. Each mounting post is slideably received in one of the slots, allowing the mounting posts to move toward or away from each other until a spacing between the mounting posts is equal to that between the two through-holes of the door.