Sliding Rear Door Hinge for B-Pillar-Free Door Clearance
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Solution Overview
Problem
Vehicle door hinge systems without a B-pillar face interference issues during opening and closing, limiting the independent operation of rear doors due to overlapping rotation trajectories with front doors, which affects the open feeling and operational sequence.
Innovation Solution
A door hinge apparatus featuring a rail plate, a hinge slide unit with a guide slot, and an actuator with a roller, allowing the rear door to pivot independently by displacing rearward along a rail to avoid interference with the front door, enabling solo opening and closing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If gooseneck-type hinge apparatus is used to solve interference issues, then independent rear door operation is enabled, but a lot of free space in vehicle body width direction is required making layout inefficient
Solution Approach 1:
The hinge slide unit is designed to slide along a rail that is integrated into the vehicle body structure, dynamically adjusting the position of the rear door during opening and closing operations. This dynamic mechanism enables independent rear door operation without requiring excessive free space in the vehicle body width direction, improving layout efficiency compared to static gooseneck-type hinges.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution maintains the open feeling for passengers while allowing independent rear door operation without B-pillar constraints, reducing the need for extra space and improving vehicle layout efficiency compared to conventional gooseneck-type hinges.
Implementation Method 1
an actuator having a roller configured at a rod to roll along the guide slot so that the slide bracket moves along the rail
Data Source
AI summary
A door hinge apparatus of a vehicle may include a rail plate provided on one side of a vehicle body corresponding to an end portion of a door of the vehicle and formed with a rail in a width direction of the vehicle, a hinge slide unit including a slide bracket provided on the rail and a door hinge bracket provided on the door where the slide bracket includes a guide slot formed in a diagonal direction of the slide bracket and the slide bracket and the door hinge bracket are pivotally coupled each other through a hinge shaft, and an actuator having a roller configured at a rod to roll along the guide slot so that the slide bracket moves along the rail.