Door Handle Reminder Flap for Vehicle Occupancy Alerts
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Solution Overview
Problem
Existing solutions for reminding drivers about vehicle occupants are either costly, complex, unreliable, or obstructive, failing to provide a practical and safe method to prevent children or elderly individuals from being left behind in vehicles.
Innovation Solution
A hanging flexible flap that interferes with the door handle without blocking access, providing a tactile and visual reminder of vehicle occupancy by unfolding to cover the lever when the vehicle is occupied and folding away when not needed, allowing easy manual access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigidly-constructed mechanical reminding device is used, then the device can provide a physical reminder, but it can physically distract the driver while driving
Solution Approach 1:
The patent employs a flexible flap made of thin material that can bend and move with vehicle motion. This flexible structure provides the reminder function without the rigidity that causes driver distraction, allowing the flap to gently indicate occupancy without physically interfering with the driver's view or control
Solution Approach 2:
The flap is designed to be dynamic rather than static, moving in response to vehicle acceleration, braking, and turning. This dynamic behavior allows the flap to provide reminder cues during relevant events while naturally settling during normal driving, reducing unnecessary driver distraction
2Reliability
If a mechanical reminding device is always present in the vehicle, then it can remind drivers of occupants, but it becomes an inconvenience or annoyance when not needed
Solution Approach 1:
The flap's position is dynamically adjusted based on occupancy detection. When an occupant is detected, the flap moves to a visible position to provide the reminder. When no occupant is present, the flap returns to a stowed position, eliminating the annoyance of having a constant visual obstruction in the cabin
Solution Approach 2:
The flap uses inexpensive, easily replaceable materials and attachment mechanisms. If the flap becomes worn or damaged, it can be quickly replaced without costly repairs, ensuring the system remains reliable and convenient over time
3Reliability
If a door sensor alarm reminder is used, then it can alert drivers upon exit, but it is not practical for multi-stop trips where the driver exits frequently
Solution Approach 1:
Instead of triggering a continuous alarm, the system uses periodic visual cues through the flap's movement. The flap provides brief, periodic reminders at appropriate moments during the trip, such as when the driver approaches the door or during natural pause points, making it suitable for multi-stop journeys without causing annoyance
4Reliability
If a motion detector is used to detect child motion before the alarm stops, then it can improve reliability, but it is more expensive to implement
Solution Approach 1:
The system uses simple optical or capacitive sensors that detect the presence and motion of occupants without requiring expensive specialized motion detection technology. These simplified sensors provide sufficient reliability for the application while keeping manufacturing costs low
Data Source
AI summary
For a hanging flexible flap having a top and bottom end for reminding a driver, upon exiting, of the vehicle's occupancy for a vehicle having a driver-side door handle including a lever operable for opening the door, deployment, proceeding from a pre-deployment state in which the flap is in a folded-up configuration such that the bottom end is releasably attached to a second interior-side location vertically above a first interior-side location to which the flap is attached and both locations are vertically above the lever and jointly high enough that the flap does not cover the lever along at least most of the lever's length, includes undoing the releasable attachment; and unfolding the flap, or letting it fall, to hang down covering the lever along at least most of the lever's length. Alternatively, pre-deployment may be in a spring-biased rolled-up configuration, with the flap unrollable down to cover the lever.