Portable Door Lock with Pivoting Bar and Housing
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Solution Overview
Problem
Conventional portable door locks are often complex, unsuitable for doors of varying thicknesses, and not aesthetically designed for convenient carrying, making them impractical for everyday use, especially for women.
Innovation Solution
A compact, portable door lock with a locking bar and housing design featuring a pivot connection, adjustable protrusion, and protective materials like plastics or rubber, allowing for secure engagement with different door sizes and surfaces while being ergonomic and easy to carry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional portable locks use a thin threaded metal bar with hooked end and blocking member, then the locking function is achieved, but the device becomes complicated and unsuitable for carrying in handbag
Solution Approach 1:
The locking bar is divided into two separate sections (first section and second section) that are pivotally connected. This segmentation allows the locking bar to be stored in a compact configuration within the housing while still providing the full locking function when deployed, thereby reducing device complexity without compromising reliability
Solution Approach 2:
The locking bar is received and stored within the housing when not in use. This nesting approach allows the locking mechanism to be compact and portable (suitable for carrying in handbag) while maintaining full functionality when deployed
2Device complexity
If conventional portable locks are designed for specific door thicknesses, then the locking mechanism is simplified, but the device becomes unsuitable for doors of different thicknesses
Solution Approach 1:
The locking bar incorporates a pivotal connection between its first and second sections, allowing it to dynamically adjust its configuration. This dynamic capability enables the locking bar to adapt to doors of varying thicknesses while maintaining a simple locking mechanism design
Solution Approach 2:
The locking bar design with pivotal connection provides multi-functionality by accommodating different door thicknesses and configurations, making a single device suitable for various door types without increasing mechanism complexity
3Strength
If conventional portable locks use hard metal surfaces, then the structural strength is improved, but the door surface may be damaged
Solution Approach 1:
The housing combines hard materials (for structural strength) with soft protective materials (plastics, rubber, or elastomeric material) on the face that contacts the door. This composite material approach maintains structural strength while preventing door surface damage through cushioning
4Manufacturing precision
If the locking bar is made rigid and fixed, then the locking precision is improved, but the device cannot accommodate doors of varying thicknesses
Solution Approach 1:
The pivotal connection between the locking bar's first and second sections introduces controlled flexibility that allows the bar to adjust to different door thicknesses while maintaining precise locking engagement through the protrusion and recess interface
Data Source
AI summary
A door locking device having a locking bar with a first section and a second section pivotally connected to the first section and, the second section being provided with a protrusion. There is also provided a housing having a first end comprising a face and a recess therein. The first section of the locking bar is received and retained, within the recess of the housing, and the pivotal connection is orientated with an axis of rotation that is non-parallel with the longitudinal axis of the locking bar.