Concealed Vehicle Grab Handle with Retractable Headliner Mechanism
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Solution Overview
Problem
Conventional vehicle grab handles occupy space, are visually unappealing, and pose a risk of accidental contact due to their permanent presence in the cockpit, despite being needed only intermittently for support and stability.
Innovation Solution
A concealed vehicle grab handle assembly with a retraction-extension mechanism that automatically extends from and retracts into the headliner, featuring a weight sensor and electronic control unit for controlled deployment based on user presence and instructions, and a lock mechanism to prevent unwanted extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional grab handle is permanently installed in the vehicle cockpit, then users can access it for support and stability, but it occupies unwanted space and poses a risk of accidental contact
Solution Approach 1:
The grab handle is transformed from a static, permanently visible component to a dynamic, retractable component. The handle can be extended when needed and retracted into the headliner when not in use, allowing the cockpit space to be utilized effectively while maintaining grab handle functionality on demand.
Solution Approach 2:
The grab handle is nested within the headliner structure. When retracted, the handle is concealed inside the headliner, creating a seamless appearance. When extended, it protrudes from the headliner to provide the necessary gripping function, thus eliminating the need for permanent external mounting.
2Ease of operation
If a conventional grab handle is permanently installed in the vehicle cockpit, then users can access it for support and stability, but it looks visually unappealing
Solution Approach 1:
The grab handle is nested within the headliner structure. When retracted, the handle is concealed inside the headliner, creating a seamless appearance. When extended, it protrudes from the headliner to provide the necessary gripping function, thus eliminating the need for permanent external mounting.
Solution Approach 2:
The grab handle is extracted from the traditional permanent mounting position and integrated into the headliner. This extraction allows the handle to be concealed when not in use, preserving the aesthetic continuity of the headliner while maintaining functionality when needed.
3Area of stationary object
If a grab handle is made retractable to save space, then cockpit appearance and space utilization improve, but the mechanism becomes more complex
Solution Approach 1:
The grab handle incorporates an automatic retraction mechanism that uses spring force to return the handle to its retracted position after use. This self-service feature eliminates the need for manual retraction or complex motorized systems, reducing overall device complexity while maintaining the retractable functionality.
Solution Approach 2:
The grab handle operates in periodic cycles of extension and retraction. The automatic retraction mechanism ensures the handle returns to its concealed position after being extended, creating a periodic action that simplifies the control system compared to continuously controllable systems.
4Reliability
If the grab handle is made automatically retractable, then user safety and convenience improve, but the mechanism requires additional components
Solution Approach 1:
The grab handle incorporates an automatic retraction mechanism that uses spring force to return the handle to its retracted position after use. This self-service feature eliminates the need for manual retraction or complex motorized systems, reducing overall device complexity while maintaining the retractable functionality.
Solution Approach 2:
The grab handle operates in periodic cycles of extension and retraction. The automatic retraction mechanism ensures the handle returns to its concealed position after being extended, creating a periodic action that simplifies the control system compared to continuously controllable systems.
Data Source
AI summary
Vehicle grab handle assemblies and methods of using the same. A vehicle grab handle assembly may have a grab handle. The grab handle may have a proximal end flush with an exterior surface of a headliner of the vehicle in a retracted position. The exterior surface may face away from a roof of the vehicle. Alternately, the proximal end may be between the exterior surface and the roof in the retracted position. The proximal end may extend out of the exterior surface and away from the roof in an extended position. The vehicle grab handle assembly may have a retraction-extension mechanism. The retraction-extension mechanism may be capable of traversing the grab handle between the retracted position and the extended position.