Push-In Catalyst Assembly for Fastener-Free Oven Installation
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Solution Overview
Problem
Conventional catalyst assemblies for home cooking appliances require complex and time-consuming installation processes due to the need for screws or fasteners, which can lead to gaps between the assembly and the oven wall, affecting functionality and appearance.
Innovation Solution
A push-in catalyst assembly with a body, flange, and locking spring tabs that self-tighten to the oven wall without fasteners, simplifying installation and minimizing gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws or fasteners are used to secure the catalyst assembly to the wall, then the assembly can be firmly attached, but the installation process becomes complex and time-consuming
Solution Approach 1:
The patent removes screws and fasteners from the catalyst assembly structure, extracting the fastening function entirely. The spring clips integrate the attachment function directly into the assembly body, eliminating separate fastening components and simplifying installation to a simple push-in operation.
Solution Approach 2:
The spring clips merge multiple functions into a single component: they provide structural support, enable push-in installation, ensure flush mounting against the wall, and secure the catalyst assembly without requiring separate fasteners. This consolidation resolves the contradiction between strong attachment and simple installation.
2Reliability
If screws or fasteners are used to secure the catalyst assembly, then the assembly can be attached to the wall, but gaps may form between the assembly and wall affecting appearance and functionality
Solution Approach 1:
The spring clips utilize elastic deformation to dynamically adapt to the wall surface. When pushed in, the clips flex and conform to slight variations in wall geometry, maintaining continuous contact and ensuring the flange remains flush against the wall without gaps, while still providing secure attachment.
Solution Approach 2:
The spring clips change their physical state from a compressed installation position to an expanded locked position. During push-in installation, the clips are compressed to pass through the wall opening, then expand to lock against the inner wall surface, ensuring gap-free mounting while maintaining secure attachment.
3Strength
If multiple production steps are required to prepare the wall and catalyst assembly for screw installation, then secure attachment is achieved, but installation time increases
Solution Approach 1:
The spring clips are pre-formed with the correct geometry and elastic properties during manufacturing, preparing them in advance to perform multiple functions simultaneously. This preliminary preparation eliminates the need for on-site drilling, threading, or fastener installation, reducing installation time while maintaining secure attachment through the push-in mechanism.
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 push-in catalyst assembly simplifies the manufacturing process, eliminates the need for fasteners, and improves the functionality and appearance by securely attaching to the oven wall without screws, reducing installation time and ensuring a tight fit.
Implementation Method 1
a plurality of locking spring tabs extending outward from the body... configured to secure the wall of the cooking compartment therebetween without a fastener
Data Source
AI summary
A push-in catalyst assembly for a home cooking appliance, and a home cooking appliance having a push-in catalyst assembly, are provided. The push-in catalyst assembly includes a body configured to support a catalytic material, the body having a distal end and a proximal end, a flange extending from a region of the proximal end of the body and configured to abut an inner surface of a wall of the cooking compartment, and a plurality of locking spring tabs extending outward from the body. The locking spring tabs have an end portion spaced from the flange by a predetermined distance. The flange and the end portion of each of the locking spring tabs are configured to secure the wall of the cooking compartment therebetween without a fastener.