Portable Door Lock with Adjustable Strap and Rod
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Solution Overview
Problem
Traditional door locks are vulnerable to picking and may require drilling, and existing portable locks do not accommodate various door frame shapes and sizes without damaging the door.
Innovation Solution
A keyless portable door lock system comprising a horizontal bar, a pliable strap with holes, and a rod that can be adjusted to fit different door frames, allowing for secure locking without damaging the door and accommodating various frame shapes and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional door locks are used, then door locking function is provided, but the lock can be picked by burglars and may require drilling
Solution Approach 1:
The portable door lock is divided into separate components: a bar portion with holes, a bracket with matching holes, and a pin. These segments can be assembled and disassembled without drilling, allowing the lock to be installed temporarily on any door without causing damage.
Solution Approach 2:
The patent introduces a portable locking mechanism that acts as an intermediary between the door and frame, providing security without requiring permanent modification to the door structure. The lock uses existing door features (edges, gaps) rather than requiring new holes or attachments.
2Adaptability or versatility
If existing portable locks are used, then temporary locking is provided, but they cannot accommodate various door frame shapes and sizes
Solution Approach 1:
The portable door lock is designed with universal applicability through its L-shaped bar portion that can be oriented in different directions, multiple holes for various positioning options, and a bracket that adapts to different door thicknesses and frame configurations. This allows the same device to secure various door types without modification.
Solution Approach 2:
The lock incorporates dynamic adaptability through its adjustable configuration - the bar can be positioned at different angles, the pin can engage different hole combinations, and the overall assembly can be adjusted to fit various door frame geometries, making it a dynamic solution rather than a fixed one.
3Ease of operation
If portable door lock components are separated for portability, then the lock can be carried easily, but the components may lose alignment during assembly
Solution Approach 1:
The bar portion features an L-shape with asymmetric hole positioning, and the bracket has correspondingly asymmetric hole patterns. This asymmetric design creates a unique geometric relationship between components that ensures proper alignment when assembled, preventing misalignment while maintaining portability through separation.
Data Source
AI summary
The present invention relates to a keyless portable lock for a door. The portable door lock includes a horizontal bar that lays across the door and/or the door frame and a strap with one or more holes. The user pulls on the strap, closes the door and inserts a rod through the one or more strap holes so that the rod lays across the door and the frame on the opposite side of the door as the horizontal bar. This action will prevent the door from being opened. A transverse bar may extend from the horizontal bar at approximately 90 degree angle so that the portable door lock is generally in the shape of a L.