Occupancy-Sensing Headrest Flaps for Privacy and Impact Protection
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Solution Overview
Problem
Conventional headrests in vehicles are often coupled to seating areas, which may not provide adequate support or privacy for passengers, and lack the ability to adjust dynamically based on occupancy, leading to suboptimal comfort and safety during collisions.
Innovation Solution
A wraparound headrest system that is not directly coupled to seating areas, featuring adjustable flaps that can be manually or automatically controlled using sensors and actuators to ensure passenger comfort and safety, with the ability to revert to a default position when unoccupied, and can be attached to the vehicle body via compliant or active couplings to absorb impact forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If headrests are coupled to seating areas, then structural support is provided, but passenger comfort and privacy are compromised due to fixed positioning and lack of adaptability
Solution Approach 1:
The headrest is divided into multiple independent flaps (e.g., left flap, right flap, center flap) that can move independently relative to each other and the headrest body. This segmentation allows each flap to be positioned independently to provide personalized comfort and privacy for passengers while maintaining structural support through the overall headrest assembly.
Solution Approach 2:
The headrest flaps are designed to be dynamically adjustable rather than fixed. The flaps can move between different positions (e.g., forward, backward, intermediate positions) to adapt to different passenger needs, vehicle configurations, and occupancy scenarios, thereby improving comfort and adaptability while maintaining structural integrity.
2Adaptability or versatility
If headrests are coupled to seating areas, then installation is simplified, but the headrest cannot provide adequate support for various vehicle configurations and occupancy scenarios
Solution Approach 1:
The headrest is divided into multiple independent flaps (e.g., left flap, right flap, center flap) that can move independently relative to each other and the headrest body. This segmentation allows each flap to be positioned independently to provide personalized comfort and privacy for passengers while maintaining structural support through the overall headrest assembly.
Solution Approach 2:
The headrest system is designed to serve multiple functions: providing structural support, adjusting to different vehicle configurations (wraparound, non-wraparound), adapting to various occupancy scenarios (occupied, unoccupied, partial occupancy), and offering privacy control. This multi-functionality allows a single headrest design to replace multiple specialized components.
3Reliability
If conventional headrests are used, then structural simplicity is maintained, but impact energy absorption and passenger safety are insufficient
Solution Approach 1:
The headrest flaps are designed to be dynamically adjustable rather than fixed. The flaps can move between different positions (e.g., forward, backward, intermediate positions) to adapt to different passenger needs, vehicle configurations, and occupancy scenarios, thereby improving comfort and adaptability while maintaining structural integrity.
Solution Approach 2:
The headrest system includes impact absorption mechanisms that are pre-configured to protect passengers during collision events. The flaps and coupling mechanisms are designed to deform or move in controlled ways during impact to absorb energy and reduce the force transmitted to the passenger's head and neck.
4Ease of operation
If manual flap adjustment is used, then device complexity is reduced, but passenger convenience and dynamic adaptability are compromised
Solution Approach 1:
The headrest system includes sensors that automatically detect occupancy status and flap position, and actuators that automatically adjust flap positions based on detected conditions. This self-service capability allows the headrest to adapt to occupancy changes and passenger needs without requiring manual intervention, thereby improving convenience while maintaining reasonable system complexity through the use of simple sensor-actuator pairs.
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 system provides enhanced passenger comfort and safety by ensuring consistent headrest positioning and energy absorption during impacts, minimizing head and neck injuries while maintaining passenger privacy and comfort across various vehicle configurations.
Implementation Method 1
coupled to a vehicle body via a compliant coupling that absorbs energy from an impact
Implementation Method 2
a movable flap pivotable about a pivot line and an actuator to move the movable flap from a first position to a second position
Data Source
AI summary
A system and method for determining whether a passenger is seated in a seating area and, based at least in part on detecting the passenger, engaging or disengaging a flap in a headrest. Such a headrest may span multiple seats so that a single headrest is used by multiple passengers. Each of one or more flaps in the single headrest may then be configured by the passenger to provide each passenger with their own privacy and comfort. By actively controlling the state of the flap, a uniform passenger experience may be created so that the flap is in the same state upon a passenger entering the vehicle. Further, examples of the headrest are designed and configured to couple directly, or indirectly, to a vehicle body, such that the headrest does not couple directly to a seat or passenger seating area.