Vehicle Door Hinge Slider for Independent Rear Door Opening
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Solution Overview
Problem
Vehicles without a B-pillar face a limitation in the opening and closing sequence of rear and front doors due to overlapping rotation trajectories, restricting independent operation of the rear door.
Innovation Solution
A door hinge apparatus with a slide unit, 2-stage hinge slider, and driving unit that allows the rear door to move rearward, securing its rotation trajectory and enabling independent opening and closing without interference with the front door, using a slide body, main slider, and 2-stage hinge slider with rotatable bridges and a driving unit that provides torque for movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If opposite swing doors are applied without a B-pillar to achieve good open feeling, then the open feeling is improved, but the opening/closing sequence is restricted due to overlapping rotation trajectories
Solution Approach 1:
The hinge device introduces a second degree of freedom by allowing the door to move not only in the horizontal swinging direction but also in the vertical dimension. The door can be raised upward before opening, changing the rotation trajectory from a simple arc to a compound motion path that avoids interference with the front door.
Solution Approach 2:
The hinge device transitions from a fixed rotation axis to a dynamic, adjustable rotation trajectory. The mechanism allows the door to switch between different motion modes (pure swinging, raised opening, closed position adjustment) based on operational requirements, enabling independent rear door operation while maintaining good open feeling.
2Adaptability or versatility
If a B-pillar is added to enable independent door operation, then independent opening/closing is achieved, but the open feeling deteriorates
Solution Approach 1:
The invention extracts the door independence function from the structural B-pillar element and relocates it to the hinge device mechanism. This allows the vehicle to maintain a B-pillarless design for good open feeling while achieving independent door operation through the hinge mechanism's ability to control rotation trajectories and prevent interference.
3Adaptability or versatility
If the rear door rotation trajectory is adjusted to avoid interference with the front door, then independent operation is enabled, but the device complexity increases
Solution Approach 1:
The hinge device merges multiple functions into a single integrated mechanism: the rotation axis provision, the trajectory control, the door lifting capability, and the interference prevention are all achieved through the combined action of the upper arm, lower arm, and linkage mechanism rather than separate systems.
Solution Approach 2:
The hinge device serves multiple purposes: it provides the rotation axis for door opening, controls the rotation trajectory to avoid interference, enables the door to be raised upward, and allows adjustment of the closed position. This multi-functionality reduces the need for additional separate mechanisms.
Data Source
AI summary
A door hinge apparatus of a vehicle may include a slide unit including a slide body and a main slider where the slide body is provided on one side of a vehicle body corresponding to an end portion of a door in the vehicle and the main slider is movable in a width direction of the vehicle with respect to the slide body, and a door hinge bracket engaged with the end portion of the door and operably coupled to the main slider.