Door Hinge Assembly for Sloped B-Pillar Vehicle Frames
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Solution Overview
Problem
In multi-utility vehicles (MUVs) with sloping B-pillars, existing door hinge constructions fail to maintain a vertical door pivot effectively, leading to design limitations and potential interference with rear wheels.
Innovation Solution
A hinge assembly featuring an upright hinge pipe that extends through the door, with a top end pivotally attached to an upper hinge pipe fixedly attached to the sloped B-pillar and a bottom end connected to a lower pivot attached to the vehicle frame, allowing for vertical door rotation and reinforcing the door structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the B-pillar is oriented vertically to properly hang a door, then the door can be properly supported, but the design flexibility is reduced and rear wheels may be interfered with
Solution Approach 1:
The door hinge system is segmented into multiple components: an upper hinge assembly attached to the B-pillar, a lower hinge assembly attached to the door, and a hinge pipe connecting them. This segmentation allows the B-pillar to be sloped while the door pivot remains vertical, resolving the conflict between design flexibility and wheel interference
Solution Approach 2:
The hinge pipe is oriented vertically (perpendicular to the ground) while the B-pillar is sloped at an angle. This dimensional orientation change allows the door to pivot vertically without requiring the B-pillar to be vertical, enabling both design flexibility and avoidance of wheel interference
2Adaptability or versatility
If the B-pillar is sloped rearward to provide design options, then design flexibility is improved, but the door pivot cannot be maintained vertically
Solution Approach 1:
The hinge pipe acts as an intermediary element between the sloped B-pillar and the door. It translates the sloped orientation of the B-pillar into a vertical pivot orientation for the door, allowing the door to open and close properly while the B-pillar maintains its sloped design
Solution Approach 2:
The hinge system is divided into upper and lower assemblies with a connecting pipe. The upper assembly attaches to the sloped B-pillar, the lower assembly attaches to the door, and the pipe connects them vertically, enabling the door pivot to be vertical while the B-pillar is sloped
3Ease of operation
If a complex hinge assembly is used to achieve vertical door pivot with sloped B-pillar, then the door functionality is improved, but the device complexity increases
Solution Approach 1:
The upper hinge assembly, lower hinge assembly, and hinge pipe are combined into a single integrated door hinge system. This merging allows the complex functionality of vertical door pivot with sloped B-pillar to be achieved through a unified structure rather than separate components
Data Source
AI summary
A frame for a motor vehicle is disclosed. The frame includes a longitudinal side member, an A-pillar extending upward from the longitudinal side member and defining a front of the cockpit, a B-pillar extending upwardly and rearwardly from the longitudinal side member rearward of the A-pillar and defining a rear of the cockpit, a door positioned between the A-pillar and the B-pillar, and a hinge assembly attached to the B-pillar. The hinge assembly includes an upright hinge pipe that extends vertically through the door to reinforce the door, the upright hinge pipe having a top end and a bottom end, an upper hinge pipe pivotally attached to the top end of upright hinge pipe and fixedly attached to the B-pillar, and a lower pivot connecting the bottom end of the upright hinge pipe to the B-pillar.