Bimini Top Hinge Assembly for Single-User Locking and Folding
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Solution Overview
Problem
Traditional bimini tops are cumbersome and time-consuming to deploy and fold, often requiring multiple users due to difficulties in securing the canvas tightly and manipulating locking mechanisms, leading to instability during watercraft operation.
Innovation Solution
A hinge assembly with a pawl and teeth mechanism that allows for easy deployment and folding of the bimini top, featuring a pawl spring for biasing engagement with teeth, a locking pin for securing positions, and a user-activated pawl button for disengagement, enabling single-user operation and secure deployment without stretching or flapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional locking mechanism is used to secure the bimini top in deployed position, then the bimini top can be held open, but it requires difficult manipulation and multiple users to operate
Solution Approach 1:
The pawl is spring-biased to automatically engage with the teeth on the arm, securing the bimini top in deployed position without requiring manual intervention. The mechanism serves itself by using spring force to maintain engagement, eliminating the need for users to manually manipulate locking components.
Solution Approach 2:
The complex manual locking mechanism is replaced with a simple pawl-teeth-spring system. The spring provides continuous force to engage the pawl with the teeth, converting a manually-operated mechanical system into an automatically-engaging mechanical system that requires minimal user input.
2Stability of the object's composition
If the bimini top canvas is tightly stretched during deployment, then the top remains stable, but it becomes difficult to release for folding
Solution Approach 1:
The spring-biased pawl automatically maintains engagement with the teeth during deployment, holding the canvas tightly stretched and stable. The same spring mechanism automatically allows disengagement when needed for folding, providing self-adjusting tension without requiring manual intervention to maintain or release the tight state.
Solution Approach 2:
The pawl mechanism transitions from a static locked position to a dynamic state where the spring can easily allow disengagement. The spring-loaded design enables the system to dynamically adjust between maintaining tight canvas tension during deployment and allowing easy release during folding operations.
3Reliability
If multiple users are used to deploy and fold the bimini top, then the top can be properly secured, but the process becomes time-consuming and cumbersome
Solution Approach 1:
The spring-biased pawl automatically engages and secures the bimini top during deployment without requiring multiple users to hold or manipulate components. The mechanism performs the securing function itself through spring force, enabling single-user operation and significantly reducing the time and effort required for deployment and folding operations.
4Ease of operation
If the pawl is spring-biased to engage the teeth, then the bimini top is automatically secured, but the spring may cause the pawl to disengage during vibration or movement
Solution Approach 1:
The spring is pre-loaded to provide continuous engagement force on the pawl, counteracting any disengaging forces that may arise during vibration or movement. The preliminary spring bias creates a pre-compression force that maintains pawl-teeth engagement even when external vibrations or movements attempt to separate them, preventing premature disengagement.
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
The hinge assembly allows for effortless deployment and folding of the bimini top by a single user, ensuring the canvas is tightly secured and stable, eliminating the need for multiple users and reducing wear on the top.
Implementation Method 1
the pawl further includes a pawl spring located between the pawl and the body for biasing the pawl towards the first arm
Data Source
AI summary
A hinge assembly includes: a body; a first arm pivotally mounted on the body and movable between a first position and a second position, the first arm including a plurality of teeth formed thereon; a pawl mounted on the body proximate to a portion of the first arm, the pawl shaped to releasably engage the plurality of teeth of the first arm. In a collapsed position of the hinge assembly the pawl is disengaged from the plurality of teeth of the first arm such that the first arm is pivotable relative to the pawl. In a deployed position the pawl engages the plurality of teeth of the first arm to releasably secure the first arm in the second position.