Multi-Hinge Tonneau Cover for Fluid-Resistant Panel Rotation
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Solution Overview
Problem
Existing tonneau covers lack efficient mechanisms to prevent fluid penetration through hinge joints, restrict movement without hindrance, and securely connect to vehicles, while maintaining a flush closure and preventing longitudinal movement.
Innovation Solution
A tonneau cover system featuring expansion links, covers that extend over hinges, standing hinges, connectors that move within tracks, and rotary locks to ensure fluid resistance, unhindered movement, and secure vehicle attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If expansion links are used to connect panels with specific rotation amounts, then panel rotation control is improved, but hinge complexity increases
Solution Approach 1:
The hinge is divided into multiple expansion links (first expansion link, second expansion link, third expansion link) that can independently control rotation at different stages. Each link provides a specific rotation amount, allowing precise control of panel movement from 0-90 degrees, 90-180 degrees, and 180-270 degrees respectively.
Solution Approach 2:
The expansion links are designed with movable connections between panels, allowing dynamic adjustment of rotation angles. The links can expand and contract to provide controlled movement through multiple rotation stages, transforming a static hinge into a dynamically adjustable mechanism.
2Reliability
If a single cover extends over the hinge to prevent fluid penetration and hold the hinge together, then fluid resistance and structural integrity are improved, but hinge movement restriction increases
Solution Approach 1:
The cover is designed to disconnect from the hinge at specific points during movement. The cover holds the hinge together in the closed position to prevent fluid penetration, but can separate to facilitate hinge rotation and movement, then re-engage to maintain protection.
Solution Approach 2:
The cover-hinge connection is made dynamic rather than fixed. The cover can connect to and disconnect from the hinge based on the movement state, providing structural integrity when needed and freedom of movement when required.
3Stability of the object's composition
If expansion caps extend the hinge to the rail cap location, then hinge support and alignment are improved, but device complexity increases
Solution Approach 1:
The expansion cap serves multiple functions: it extends the hinge to the rail cap location for proper alignment, provides additional support for the hinge mechanism, and maintains the structural integrity of the overall assembly. This multi-functional component reduces the need for separate alignment and support elements.
4Ease of operation
If standing hinges lift panels away from the rail cap during rotation, then panel clearance and rotation smoothness are improved, but device complexity increases
Solution Approach 1:
The standing hinge mechanism creates a lifting action that counteracts the weight of the panels during rotation. By lifting the panels away from the rail cap, the mechanism reduces friction and resistance, allowing smoother rotation throughout the movement range.
5Reliability
If connectors are movably locked within tracks to prevent longitudinal movement, then vehicle attachment security is improved, but connector complexity increases
Solution Approach 1:
The connector is designed with movable locking capability within the track. It can move along the track during installation and adjustment, then lock into position to prevent longitudinal movement. This dynamic locking mechanism provides secure attachment while maintaining ease of installation and adjustment.
6Stability of the object's composition
If rotary locks prevent hinge vertical movement when closed, then hinge stability is improved, but hinge complexity increases
Solution Approach 1:
The rotary lock is integrated into the hinge mechanism itself, allowing the hinge to lock and unlock its vertical movement capability as part of its normal operation. When the tonneau cover is closed, the rotary lock automatically engages to prevent vertical movement and stabilize the hinge in its closed position.
Data Source
AI summary
A tonneau cover comprising: (a) a plurality of panels; (b) one or more hinges between each panel of the plurality of panels so that the plurality of panels are rotatably connected together, wherein some or all of the one or more hinges include: (i) a plurality of expansion links that are movably interconnected together, some of the plurality of expansion links including: (1) one or more expansion projections; (2) one or more pockets that receive all or a portion of the one or more expansion projections from an adjacent one of the plurality of expansion links; and (3) one or more expansion stops that restricts movement of the one or more expansion projections from the adjacent one of plurality of the expansion links that extend within the one or more pockets.