Antagonistic Vehicle Door Hinge with Multi-Axis Pivoting
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Solution Overview
Problem
Existing motor vehicles with antagonistic doors face difficulties in ensuring repeatable door opening and closing movements and adequate sealing, particularly when rear passengers need to exit without waiting for the front door to be opened, and existing systems complicate access to the unlocking mechanism.
Innovation Solution
An access device with a first and second hinge, each comprising a knuckle fixed to the vehicle body and door, allowing simultaneous and independent opening of the second door via pivoting around multiple axes, with a locking mechanism to stabilize the opening phases and ensure sealing through elastic return members and guide cams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rear door is connected to a hinge assembly configured to move along a sliding rail sideways and rearwards, then the rear door can be opened independently of the front door, but the repeatability of the opening and closing movement is not guaranteed and sealing is compromised
Solution Approach 1:
The door opening movement is segmented into two distinct phases: a first phase where the door pivots simultaneously around first and second pivoting axes to move from closed to intermediate position, and a second phase where the door pivots only around the second pivoting axis to move from intermediate to fully open position. This segmentation allows controlled independent opening while maintaining reliability through defined movement paths.
Solution Approach 2:
The hinge assembly employs dynamic characteristics by allowing the door to pivot around two different sets of axes depending on the opening phase. The transition between phases is managed through a locking mechanism that dynamically engages and disengages to control the movement characteristics, ensuring repeatable and reliable door operation.
2Reliability
If a locking mechanism is added to lock rotation about the first pivot axis, then the door opening phases are stabilized, but the device complexity increases
Solution Approach 1:
A locking mechanism acts as an intermediary element between the door and the hinge assembly. This locking mechanism selectively engages to lock rotation about the first pivoting axis during the second opening phase, providing stability and reliability to the door opening phases while managing the complexity through a dedicated control component.
3Ease of operation
If the door pivots simultaneously around multiple axes during the first opening phase, then easy exit for rear passengers is enabled, but the mechanism complexity increases
Solution Approach 1:
The door opening mechanism utilizes another dimension by introducing simultaneous pivoting around two different axes (first and second pivoting axes) during the first opening phase. This multi-axis rotation enables the door to clear the vehicle body more effectively, providing easy exit for rear passengers while managing complexity through a well-defined mechanical configuration.
Data Source
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AI summary
Access device for a vehicle (10) comprising a first door (21) and a second door (22) configured in an antagonistic manner, characterized in that it comprises a first hinge (31) and a second hinge (32) each comprising a first knuckle (311, 321) and a second knuckle (312, 322) and an elbow (313, 323) movable relative to the first knuckle (311, 321) by means of a first axis (A31, A32), the elbow (313, 323) being movable relative to the second knuckle (312, 322) by means of a second axis (B31, B32) so that during a first opening phase the second door (22) pivots simultaneously about the first axes (A31, A32) and second axes (B31, B32), between a closed position in which said second door (22) is flush with the body (12) of the vehicle (10) and an intermediate position, in which said second door (22) is spaced relative to said body (12).