Spa Cover Assembly with Dual-Pivot Lifting Mechanism
Solution Overview
Problem
Existing spa covers are heavy, cumbersome, prone to breakage, and difficult to remove and replace, lacking ergonomic design and effective debris management.
Innovation Solution
A cover assembly with a base and shell, featuring a lifting mechanism with two pivot points and guide plates that allows for easy rotation and vertical positioning, enhancing structural integrity and minimizing rainwater and debris accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing spa covers are made heavy and cumbersome to provide structural integrity, then the cover is more resistant to breakage, but the cover becomes difficult to remove and replace
Solution Approach 1:
The cover assembly is divided into separate components: a removable cover member and a lifting assembly with lifting arms. This segmentation allows the cover to maintain structural integrity when closed while enabling easy removal through the lifting mechanism that engages with the cover's perimeter.
Solution Approach 2:
The lifting assembly acts as an intermediary between the user and the heavy cover member. The lifting arms with guide plates provide a mechanical interface that facilitates easy removal and replacement of the cover without requiring the user to directly handle the heavy cover member.
2Strength
If existing covers are made heavy to provide structural integrity, then the cover is more resistant to breakage, but the cover becomes cumbersome to handle
Solution Approach 1:
The system separates the heavy cover member from the lifting mechanism. The cover member can be optimized for strength and debris management, while the lifting assembly provides the mechanical advantage needed to move the cover easily despite its weight.
Solution Approach 2:
The lifting assembly serves as a mechanical intermediary that reduces the effort required to move the heavy cover. The guide plates and lifting arms work together to provide controlled movement and mechanical advantage, making the heavy cover manageable.
3Ease of manufacture
If existing covers are designed with simple structures, then the manufacturing cost is reduced, but the covers become prone to breakage
Solution Approach 1:
The cover assembly is segmented into the cover member and the lifting assembly, allowing each component to be optimized independently. The cover member can be manufactured with reinforced structures for durability, while the lifting assembly uses straightforward mechanical components that are easy to manufacture and maintain.
Solution Approach 2:
The cover member incorporates a perimeter structure with guide plate features that combine structural reinforcement with functional elements. This composite design approach strengthens the cover without significantly increasing manufacturing complexity.
4Ease of operation
If existing covers are designed to be lightweight for ease of handling, then the cover is easier to remove and replace, but the cover becomes prone to breakage
Solution Approach 1:
The system separates the cover member from the lifting mechanism, allowing the cover to be optimized for strength while the lifting assembly provides the ease of handling. The guide plates on the cover work with the lifting arms to enable easy removal without compromising the cover's structural integrity.
Solution Approach 2:
The lifting assembly acts as a mechanical intermediary that provides ease of handling for the cover. The guide plates and lifting arms create a controlled engagement system that makes the cover easy to remove and replace while allowing the cover itself to be designed for durability.
5Ease of manufacture
If existing covers have flat surfaces for simplicity, then the manufacturing is simpler, but rainwater and debris accumulate on the cover
Solution Approach 1:
The top surface of the cover member is designed with a curved or domed shape rather than a flat surface. This curvature facilitates water runoff and prevents debris accumulation, while the perimeter structure with guide plates maintains manufacturing feasibility by using standard forming techniques.
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 cover assembly is easier to open and close, more resistant to breakage, and effectively manages debris and rainwater, providing improved user experience and durability.
Implementation Method 1
The cover member is rotatable about said first pivot point and said second pivot point between said covered position, in which said cover member rests atop said shell, and said uncovered position
Implementation Method 2
The first lifting arm has a first depending guide plate and the second lifting arm has a second depending guide plate. The cooperation between the first depending guide plate and the second depending guide plate, guides the movement of the cover member
Data Source
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AI summary
A cover assembly for a spa having a base and a shell supported by the base is provided. The cover assembly includes a cover member selectively movable between a covered position and an uncovered position, and a lifting assembly having a first lifting mechanism rotatably coupled to the cover member and to the base. The first lifting mechanism provides two axes of rotation for the cover member relative to the base.