Vehicle Headrest Dual-Cam Release for Folded Seatback Access
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Solution Overview
Problem
Existing vehicle headrests lack a efficient mechanism to transition between deployed and folded configurations, particularly in reconfigurable seatbacks, which limits storage capabilities and view enhancement.
Innovation Solution
A multi-actuator capable headrest with a dual-cam release mechanism and bell crank actuator system that allows the headrest to pivot and fold seamlessly, utilizing a first and second actuator portion to disengage the cam mechanism based on distinct inputs, enabling smooth transition between configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single actuator mechanism is used for headrest release, then the device complexity is reduced, but the ease of operation is limited because it cannot accommodate multiple distinct input types
Solution Approach 1:
The single actuator mechanism is designed to perform multiple functions by responding to different types of inputs (manual activation and automated activation). The actuator includes a manual activation mechanism that can be manually actuated and an automated activation mechanism that can be automatically actuated, allowing one component to serve multiple operational purposes and accommodating various user needs without requiring separate mechanisms for each input type.
2Adaptability or versatility
If the headrest is made permanently fixed to the seat back, then the structural support is maximized, but the adaptability is reduced because the headrest cannot be removed or folded
Solution Approach 1:
The headrest is designed with a dynamic mounting system that allows it to transition between fixed and movable states. The actuator mechanism enables the headrest to be selectively positioned between a deployed configuration (providing structural support) and a folded configuration (providing adaptability). This dynamic capability allows the headrest to adapt to different operational requirements while maintaining structural integrity when needed.
3Ease of manufacture
If the headrest folding mechanism is simplified, then the ease of manufacture is improved, but the reliability is reduced because the release mechanism becomes less secure
Solution Approach 1:
The release mechanism combines multiple functions into a unified system. The actuator mechanism integrates both manual and automated activation capabilities within a single structured assembly. The actuator includes a manual activation mechanism with a manual activation member and an automated activation mechanism with an automated activation member, both working together within one integrated structure. This merging approach maintains reliability through comprehensive functionality while improving ease of manufacture by using a unified design rather than separate mechanisms.
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
Enables easy deployment and folding of the headrest, enhancing storage and view options while maintaining structural support, with reduced manufacturing complexity and cost-effective production.
Implementation Method 1
a multi-cam release mechanism mounted to the headrest support. The multi-cam release mechanism includes a first cam and a second cam
Implementation Method 2
The actuator includes a first actuator portion operable to disengage the multi-cam release mechanism based on a first input and a second actuator portion operable to disengage the multi-cam release mechanism based on a second input
Data Source
AI summary
A multi-actuator capable vehicle headrest includes a headrest support and a multi-cam release mechanism mounted to the headrest support. The multi-cam release mechanism includes a first cam and a second cam. A headrest shell member is pivotally mounted to the headrest support through the multi-cam release mechanism. An actuator is mounted to the headrest shell member. The actuator includes a first actuator portion operable to disengage the multi-cam release mechanism based on a first input and a second actuator portion operable to disengage the multi-cam release mechanism based on a second input that is distinct from the first input allowing the multi-actuator capable vehicle headrest to transition between a deployed configuration and a folded configuration.