Arm-Receiving Door Handle Assembly with Sliding Lock Mechanism
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Solution Overview
Problem
Conventional door handles and locks require direct hand contact, which can lead to the transmission of pathogens and contaminants, and there is a need for a solution that allows users to open and close doors without touching them.
Innovation Solution
An arm-receiving door handle assembly and sliding lock system that includes an interior plate with curved portions for gripping, a knob assembly that moves laterally between unlocked and locked positions, and a bolt that extends or retracts within a carrier, allowing the door to be operated using a limb rather than hands, with an emergency release slot for manual override.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional door handles and locks are used, then door operation is simple and reliable, but hand contact is required which transmits pathogens and contaminants
Solution Approach 1:
The patent introduces an arm-receiving mechanism as an intermediary between the user and the door handle. The curved portions on the interior plate provide a surface for arm placement, allowing the user to operate the door without direct hand contact to conventional handles or locks. This mediator transfers the operating force from the arm to the door mechanism while preventing pathogen transmission through hand contact.
2Object-affected harmful factors
If automatic doors with motion sensors are used, then hand contact is eliminated, but device complexity increases and they are only suitable for commercial building entrances
Solution Approach 1:
The arm-receiving door handle system provides a self-service solution that eliminates the need for complex motion sensors or electronic control systems. The curved portions on the interior plate are passively designed to receive and guide the user's arm, allowing the mechanism to function automatically through the user's natural arm movement without requiring sensors, power sources, or complex control logic.
Solution Approach 2:
Instead of using electronic sensors to detect the user and trigger door opening, the patent inverts the approach by providing a physical arm-receiving structure that the user directly interacts with. The system responds to the physical presence and movement of the arm rather than detecting it electronically, simplifying the mechanism while achieving the same hygiene goal.
3Object-affected harmful factors
If conventional locks are used, then locking mechanism is simple and reliable, but hand contact is required to operate the lock
Solution Approach 1:
The arm-receiving mechanism serves as an intermediary for lock operation as well. The curved portions allow the user to place their arm and apply force to operate the locking mechanism without direct hand contact to the lock itself, maintaining the simplicity of conventional locks while eliminating contaminant exposure during the locking action.
Data Source
AI summary
An arm-receiving door handle and sliding lock system, including an arm-receiving door handle assembly, including an interior plate removably connected to at least a portion of an inner surface of a door to receive a limb of a user thereon, and an exterior plate removably connected to at least a portion of an exterior surface of the door, and a sliding lock assembly, including a knob assembly removably connected to the interior plate to move laterally from unlocked in a first position to at least partially locked in a second position, and from locked in the second position to at least partially unlocked in the first position, a carrier connected to the knob assembly, and a bolt removably connected within at least a portion of the carrier to move from retracted within the carrier to at least partially extended from the carrier in response to moving the knob assembly toward the second position, and move from extended to at least partially retracted within the carrier in response to moving the knob assembly toward the first position.