Multifunctional Tailgate Handle Assembly with Dual-Axis Pivoting
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Solution Overview
Problem
Existing multifunctional tailgate systems for vehicles lack intuitive and convenient mechanisms for rotating doors about horizontal and vertical axes, and fail to securely stow components like cables when in different positions.
Innovation Solution
A handle assembly with a housing containing first and second release switches, allowing intuitive pivoting of doors about horizontal and vertical axes, and retention devices that secure cables when doors are in open positions, using a U-shaped retention device to restrict cable movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multifunctional tailgate with dual-axis rotation is provided, then the functionality and versatility of the tailgate is improved, but the complexity of the control mechanism and component management increases
Solution Approach 1:
The tailgate is divided into two separate doors that can be operated independently. Each door has its own control mechanism and can be rotated about the horizontal axis or vertical axis separately, allowing the system to manage complexity by dividing the multifunctional tailgate into manageable segments
Solution Approach 2:
Each door is designed with universal control capabilities through the handle assembly that can initiate rotation about either the horizontal axis or vertical axis. The same handle assembly serves multiple functions by detecting different user inputs and activating appropriate rotation sequences
2Ease of operation
If release switches are positioned for intuitive access, then the ease of operation is improved, but the risk of accidental activation or improper sequencing increases
Solution Approach 1:
The control system requires preliminary conditions to be met before allowing rotation about the vertical axis. The microprocessor detects whether the door is properly positioned and unlocked before enabling vertical axis rotation, preventing accidental or improper activation even though switches are easily accessible
Solution Approach 2:
The microprocessor continuously monitors the state of the door and switch activations, providing feedback control. It detects which switch is pressed and in what sequence, and only permits vertical axis rotation after confirming the door has first rotated about the horizontal axis and is properly positioned, ensuring reliable operation
3Ease of operation
If cables are allowed to move freely during door rotation, then the ease of operation is improved, but the risk of cable damage or entanglement increases
Solution Approach 1:
Retention devices act as intermediary components between the cables and the door rotation mechanism. These devices guide and control cable movement during rotation, preventing direct contact between cables and moving parts that could cause damage or entanglement, while still allowing smooth door operation
Solution Approach 2:
The retention devices are pre-positioned along the door structure to anticipate cable movement paths during rotation. Before rotation occurs, the cables are routed through or alongside the retention devices, which are already in position to guide and protect the cables throughout the entire rotation sequence
Data Source
AI summary
A vehicle includes a vehicle body, a door and a handle assembly. A door is coupled to the vehicle body and is pivotable about a horizontal axis between a closed position and a horizontal open position. The door is also pivotable about a vertical axis between the closed position and a vertical open position. The handle assembly includes a housing, a first release switch and a second release switch. The housing extends at least partially into a cavity of the door and includes a lower wall and an upper wall that cooperate to define a pocket. The first release switch is disposed along the upper wall of the housing and is configured to be actuated to pivot the door about the horizontal axis. The second release switch is disposed along the lower wall of the housing and is configured to be actuated to pivot the door about the vertical axis.