Nested Door Stop System for Multi-Axial Hinge Motion Control
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Solution Overview
Problem
Vehicles with multi-axial hinges, which allow rear doors to rotate 270 degrees, face issues with accessories like ladders and bike racks causing damage due to excessive movement, and existing door stops are unsightly and ineffective in preventing damage.
Innovation Solution
A door stop system comprising first and second stop components and fasteners, positioned within a cutout opening of the hinge to restrict the range of motion, preventing contact with the vehicle's exterior by limiting the hinge's rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rubber door stops are placed on the side of the vehicle or accessory, then the door can be stopped, but the door stops are unsightly and may not prevent damage over time
Solution Approach 1:
The door stop system is nested within the hinge assembly itself, specifically utilizing the cutout opening in the main link. The stop component fits inside the hinge structure, making the door stop function integrated and invisible when the door is closed, thus preventing aesthetic damage while maintaining reliability.
Solution Approach 2:
The patent introduces an intermediary mechanism (the stop component with fasteners) that mediates between the door and vehicle body, providing a more effective and aesthetically pleasing solution compared to external rubber stops. This intermediary is hidden within the hinge, eliminating the visual drawback of external stops.
2Ease of operation
If multi-axial hinges allow 270 degrees rotation, then door accessibility is improved, but accessories may contact the vehicle body and cause damage
Solution Approach 1:
The door stop system provides dynamic range of motion control by allowing the door to rotate freely within the permitted range (0-90 degrees for normal operation) while automatically stopping at the limit position. The stop component engages with the hinge mechanism to dynamically restrict rotation beyond the safe range, preventing accessory damage while maintaining ease of operation for normal door use.
3Reliability
If external rubber door stops are used, then the door can be stopped, but they are visible and unsightly
Solution Approach 1:
The door stop system is nested nested within the hinge assembly itself, specifically utilizing the cutout opening in the main link. The stop component fits inside the hinge structure, making the door stop function integrated and invisible when the door is closed, thus preventing aesthetic damage while maintaining reliability.
Data Source
AI summary
A door stop system is presented for restricting range of motion of a multi-axial hinge having a main link and a secondary link pivotally connected between a first end member and a second end member. In one or more embodiments, the system is configured to be positioned and held within cutout opening of the hinge, between the main link and either the first end member or second end member to restrict the range of motion. In one or more embodiments, the system includes a first stop component, a second stop component configured to be positioned around the secondary link within the cutout opening and connected together by the one or more fasteners. A portion of at least one of the first stop component or second stop component limits the range of motion of the hinge.