Tailgate Assembly with Retractable Secondary Gate for Cargo Access
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Solution Overview
Problem
Existing tailgate assemblies for vehicles do not efficiently provide a cargo bed access opening that allows users to access the cargo bed while maintaining the primary tailgate in a closed position, limiting flexibility and convenience for loading and unloading cargo.
Innovation Solution
A tailgate assembly featuring a primary tailgate and a secondary tailgate that can move between a blocking and accessing position, where the secondary tailgate is retractable into the primary tailgate, and can also extend to provide a step, allowing for enhanced access and flexibility in cargo handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the primary tailgate is kept in a closed position to maintain security and enclosure, then cargo bed access is limited, but if the primary tailgate is opened fully then security is compromised and access control is lost
Solution Approach 1:
The tailgate assembly is divided into a primary tailgate and a secondary tailgate that can operate independently. The secondary tailgate can be opened to access the cargo bed while the primary tailgate remains closed, providing both security and access. This segmentation allows selective opening of only the portion needed for cargo access.
Solution Approach 2:
The secondary tailgate is nested within the primary tailgate structure. When closed, the secondary tailgate is positioned within the primary tailgate, maintaining a compact and secure enclosure. When opened, it provides access while the primary tailgate remains intact and closed.
2Ease of operation
If a cargo bed access opening is provided in the primary tailgate, then access is improved, but the structural integrity and appearance of the primary tailgate is compromised
Solution Approach 1:
The secondary tailgate is nested within the primary tailgate, allowing access without creating permanent openings in the primary structure. The primary tailgate maintains its structural integrity while the nested secondary tailgate provides the access function.
Solution Approach 2:
The secondary tailgate is made movable relative to the primary tailgate, transitioning between retracted and extended positions. This dynamic configuration allows the access opening to appear only when needed, maintaining the primary tailgate's structural stability when the secondary tailgate is retracted.
3Ease of operation
If the secondary tailgate is extended to provide a step, then user access comfort is improved, but the device complexity increases
Solution Approach 1:
The secondary tailgate serves multiple functions: it acts as an access door to the cargo bed and simultaneously functions as a step when extended. This multi-functionality provides user comfort without requiring separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The secondary tailgate is integrated within the primary tailgate structure, sharing the overall assembly framework. This nesting approach allows the step function to be achieved using the existing structural components rather than adding entirely separate support structures.
Data Source
AI summary
A tailgate assembly according to an exemplary aspect of the present disclosure includes, among other things, a primary tailgate having a cargo bed access opening. The primary tailgate moveable between a closed position and a fully open position relative to a cargo bed of a vehicle. The tailgate assembly further including a secondary tailgate that can move between a blocking position where the secondary tailgate extends into the cargo bed access opening and an accessing position where the secondary tailgate is retracted away from the cargo bed access opening. The secondary tailgate in the accessing position at least partially retracted into a portion of the primary tailgate that is vertically beneath the cargo bed access opening when the primary tailgate is in the closed position.