Insulated Door Lock Assembly with Hinged Cover and Thermal Barrier
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Solution Overview
Problem
Existing door locks in cold climates allow significant heat loss due to gaps in the lock mechanism, necessitating an insulated door lock assembly that prevents heat seepage without compromising lock strength or aesthetics.
Innovation Solution
An insulated door lock assembly featuring a base member with an aperture for the lock cylinder, filled with insulating material, and a cover member that pivots to seal the keyway or thumb turn, optionally incorporating weatherproof Plexiglass, a solar cell, and a light source, designed to be retrofittable and aesthetically customizable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional deadbolt locks with through-holes are installed in doors, then lock functionality is achieved, but heat loss through the door increases
Solution Approach 1:
The insulating cover is nested within the door lock assembly structure, with the cover fitting over the lock cylinder and being retained by the retainer. The insulating material is contained within the cover's cavity, creating a nested configuration that provides insulation while maintaining compact integration with the lock mechanism.
Solution Approach 2:
The insulating cover acts as an intermediary element between the lock cylinder and the door surface. It mediates the thermal interaction by providing an insulating barrier that reduces heat transfer from the door interior to the exterior through the lock assembly, while still allowing the lock to function normally.
2Loss of energy
If insulating material is added to the door lock assembly, then heat loss is reduced, but the complexity of the door lock assembly increases
Solution Approach 1:
The door lock assembly is segmented into distinct functional components: the existing lock cylinder, the insulating cover with cavity for insulating material, and the retainer mechanism. This segmentation allows the insulation function to be added as a separate module without fundamentally redesigning the entire lock assembly, thereby managing complexity.
Solution Approach 2:
The retainer mechanism provides dynamic adjustability, allowing the insulating cover to be positioned at different distances from the door surface. This dynamic feature enables optimization of insulation performance while maintaining ease of installation and adjustment, balancing the added complexity with user-friendly operation.
3Loss of energy
If the insulating cover is positioned closer to the door, then insulation effectiveness is improved, but access to the keyway may be compromised
Solution Approach 1:
The retainer mechanism enables dynamic positioning of the insulating cover along the door surface. The cover can be moved closer to the door to maximize insulation effectiveness, or positioned farther away to improve access to the keyway when needed. This dynamic adjustability resolves the contradiction by allowing optimization based on specific operational requirements.
Solution Approach 2:
The distance parameter between the insulating cover and the door surface can be changed to optimize performance. By adjusting this parameter, the system can balance insulation effectiveness with operational accessibility, depending on environmental conditions and usage requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces heat loss through door locks while maintaining lock strength and offering aesthetic flexibility, with the insulating material and sealable design enhancing energy efficiency and user experience.
Implementation Method 1
The inner volume of the base member can be filled with an insulating material
Implementation Method 2
An O-ring can also be provided around a periphery of the base member for sealably engaging the cover member to the base member
Data Source
AI summary
An insulated door lock assembly including a base member with an aperture for the cylinder of a lock. The base member is configured to be mounted to a door around a hole for the door lock. The inner volume of the base member can be filled with an insulating material. A cover member can be coupled to the base member through a hinge joint. The cover member can be configured to switch between an open state and a closed state. A keyway or a thumb turn of the door lock can be accessible in the open state and the keyway or the thumb turn is covered by the cover member in the closed state. An O-ring can also be provided around a periphery of the base member for sealably engaging the cover member to the base member.