Hinge assembly for an appliance lid and installation method therefor
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Solution Overview
Problem
Existing hinge mechanisms in appliance lids experience stress and potential damage during installation and operation due to uneven biasing forces, which can lead to scratching or other forms of damage to the appliance during manufacturing and servicing.
Innovation Solution
A hinge assembly system with a first and second hinge assembly, where the second hinge is selectively retractable and biased by a spring to an extended position, and a guide member with a sloped portion is used to align and secure the hinges into respective receptacles, minimizing stress and ensuring proper alignment during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional hinge mechanism is used during installation, then the lid can be secured to the cabinet, but the hinge experiences stress and potential damage due to uneven biasing forces
Solution Approach 1:
The guide member with sloped portion is positioned beforehand to guide the hinge assembly during installation. The sloped surface预先 provides a controlled path that directs the hinge into the receptacle while the biasing member gradually applies force, preventing sudden stress impacts that could damage the hinge mechanism
Solution Approach 2:
The guide member acts as an intermediary component between the hinge assembly and the cabinet during installation. It mediates the engagement process by providing a sloped guiding surface that controls the movement and positioning of the hinge, ensuring smooth engagement without direct impact or misalignment that would cause stress
2Reliability
If a retractable hinge assembly with spring biasing is used, then proper alignment and stress minimization is achieved, but the device complexity increases
Solution Approach 1:
The hinge assembly is segmented into distinct functional components: the hinge body, the retractable second hinge, the spring biasing member, and the guide member with sloped portion. This segmentation allows each component to perform its specific function independently, improving alignment and stress distribution while making the overall system more manageable despite increased complexity
Solution Approach 2:
The hinge assembly incorporates dynamic elements including the retractable second hinge that can move between extended and retracted positions, and the spring biasing member that provides dynamic force during engagement. This dynamic design allows the hinge to adapt during installation, self-aligning through the sloped guide while the spring gradually applies biasing force, achieving proper alignment without excessive stress
3Strength
If the second hinge is biased outward by a spring, then secure engagement with the hinge receptacle is achieved, but unintended contact and scratching may occur during installation
Solution Approach 1:
The guide member with sloped portion provides preliminary anti-action by controlling the movement path of the second hinge during engagement. The sloped surface prevents the hinge from making unintended contact with the cabinet or lid surfaces that could cause scratching, while the spring biasing member gradually applies outward force to ensure secure engagement without sudden impacts
Solution Approach 2:
The guide member acts as a cushioning element during the engagement process. The sloped portion provides a gradual transition surface that cushions the engagement of the second hinge with the receptacle, preventing sudden impacts or unintended contact that could cause scratching or damage while still allowing the spring to achieve secure engagement
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 system reduces stress on hinge mechanisms, prevents damage to the appliance, and allows for secure engagement of the lid to the cabinet, maintaining alignment and preventing unintended contact that could cause scratching or damage.
Implementation Method 1
A spring of the second hinge biases the second hinge outward and into the hinge receptacle
Implementation Method 2
A sloped portion of the guide member is aligned to slope downward and toward a hinge receptacle... The sloped portion biases the second hinge to a retracted position
Data Source
AI summary
A laundry appliance includes a cabinet having a top panel that defines an aperture for selectively accessing a treatment chamber defined within the cabinet. A lid is rotationally operable relative to the aperture of the top panel between open and closed positions. Hinge assemblies extend between the lid and the top panel. The hinge assemblies include a first hinge assembly. A second hinge assembly is selectively retractable into the lid to a retracted position. A biasing member biases the second hinge assembly out to an extended position. At least the second hinge assembly is operable to the retracted position to bypass a portion of the top panel to define an installed position where the first and second hinge assemblies are engaged with respective hinge receptacles of the top panel.