Rear Spoiler Segmented Air Guide for 270° Door Clearance
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Solution Overview
Problem
Existing rear spoiler systems for commercial vehicles are expensive, complex, and limited in aerodynamic improvement due to complex joint formations and narrow installation space, which impede the 270° pivoting of rear doors.
Innovation Solution
A rear spoiler device with a locking mechanism and coupling system that allows for adjustable side and roof spoilers, using a rocker arm with multiple pivot joints and latching hooks, enabling safe adjustment between driving and basic positions without occupying the hinge area, allowing for longer air guide elements and improved aerodynamics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex joint or hinge formations are used to attach air guide elements to the tailgate, then the rear spoiler can be adjusted between driving position and fully pivoted position, but the device complexity and cost increase significantly
Solution Approach 1:
The air guide element is divided into multiple segments that can pivot independently relative to each other. This segmentation allows the spoiler to adapt to different door positions without requiring complex continuous joint mechanisms, simplifying the overall structure while maintaining adjustability.
Solution Approach 2:
The air guide element incorporates dynamic pivot joints that allow controlled movement between fixed positional states. This enables the spoiler to transition smoothly between driving position and fully pivoted position while using simpler discrete joint mechanisms rather than complex continuous formations.
2Adaptability or versatility
If the air guide element is attached in the hinge area of the rear door, then adjustment is possible, but the narrow installation space impedes the 270° pivoting of the door
Solution Approach 1:
The pivot function is extracted from the door hinge area and relocated to dedicated pivot joints on the air guide element itself. This removes the conflict between the air guide element and the door hinge, allowing the door to pivot freely through 270° while the air guide element maintains its adjustment capability through its own separate pivot mechanism.
3Ease of operation
If relatively short air guide elements are used to accommodate the hinge area, then the door can pivot freely, but the aerodynamic improvement is limited
Solution Approach 1:
The air guide element is segmented into multiple sections that can extend and pivot independently. This allows the creation of longer overall air guide elements that provide superior aerodynamic performance while each segment remains compact enough to clear the door hinge area during pivoting, resolving the conflict between length and maneuverability.
4Adaptability or versatility
If the rear spoiler system is designed with complex joint formations, then adjustment between positions is enabled, but the manufacturing cost increases
Solution Approach 1:
The invention uses simple, easily manufactured pivot joints and connection elements rather than complex precision mechanisms. The air guide element employs basic rotational joints that can be produced cost-effectively through standard manufacturing processes, achieving position adjustment functionality without requiring expensive complex joint formations.
Data Source
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AI summary
A rear spoiler device for a vehicle with at least one rear door includes at least one lateral air-deflector element and a roof air-deflector element that can be adjusted between a default position and a travel position for contour extension and aerodynamic air conduction when the rear door is closed. The device comprises a wing, which has a first swivel joint to enable pivotable fastening to the rear door. The wing is adjustably attached to the lateral air-deflector element via at least one second swivel joint. At least one locking device is provided for locking the lateral air-deflector element with the wing. A coupling device is provided for coupling an adjustment of the locking device to the adjustment of the roof air-deflector element.