Spring-Loaded Tonneau Cover Latch for Secure Rear Header Bar
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Solution Overview
Problem
Existing tonneau cover systems for pickup trucks lack a reliable and efficient mechanism for securing the rear header bar, which can lead to instability and potential detachment during use.
Innovation Solution
A latch assembly comprising a bracket secured to the side rail of the truck bed, featuring a pivoting member with a handle, nose, main body, and horn, and a spring mechanism to maintain the pivoting member in a locked position until manual force is applied, ensuring secure attachment of the rear header bar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a latch assembly is added to secure the rear header bar, then the reliability of attachment is improved, but the device complexity increases
Solution Approach 1:
The pivoting member is pivotally connected to the bracket, allowing the latch mechanism to be compactly integrated into the bracket structure. The nose of the pivoting member nests within the receiving area when engaged, creating a space-efficient design that provides secure attachment without excessive complexity
Solution Approach 2:
The spring automatically maintains the pivoting member in the engaged position, providing self-latching functionality. The mechanism uses the natural spring force to keep the nose engaged with the rear header bar, reducing the need for additional locking components or complex actuation systems
2Stability of the object's composition
If a spring mechanism is used to maintain the pivoting member in position, then the stability of attachment is improved, but the device complexity increases
Solution Approach 1:
The spring provides automatic maintenance of the engaged position without requiring external actuation or complex control systems. The spring force continuously acts to keep the pivoting member engaged, creating a stable attachment that self-corrects for minor position variations
Solution Approach 2:
Instead of using a complex locking mechanism to prevent detachment, the invention uses a spring to actively promote engagement. The spring force works in reverse of typical locking mechanisms by continuously pushing the pivoting member toward the engaged position rather than requiring active locking action
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
Provides a stable and secure attachment of the rear header bar, preventing detachment and enhancing the overall reliability and durability of the tonneau cover system.
Implementation Method 1
a spring that is situated between the main body of the pivoting member and the bracket around a boss that is part of the pivoting member; wherein a first end of the spring is attached to the pivoting member, and a second end of the spring is attached to the bracket; and wherein the spring is configured to maintain the pivoting member in a first position relative to the bracket until and unless manual force is applied to the handle of the pivoting member
Data Source
AI summary
A latch assembly for a tonneau cover with a bracket, pivoting member, and spring. The spring is situated between the bracket and pivoting member and retains the pivoting member in a first position until manual force is applied to the handle of the pivoting member. The bracket forms a rearward-facing receiving area with a floor. The pivoting member has a nose with a nub that is configured to rest on top of or below the floor, depending on whether force is applied to the spring. The pivoting member has an extension that extends forwardly from the main body of the pivoting member opposite the nose and is configured to act as a stop to prevent the pivoting member from over-rotating, and a horn that extends upwardly from a top part of the main body between the nose and extension.