Sliding Oven Rack Locking for Safe Access in Small Cavities
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Solution Overview
Problem
Conventional cooking ovens pose risks of burns when removing hot racks and present difficulties in accessing small oven cavities due to size constraints, making it hard to safely retrieve items or view food without opening the door.
Innovation Solution
An oven design featuring a slidable rack assembly with a hinge and lock mechanism that allows the door to move between positions, enabling safe access and secure locking of the rack in extended positions, facilitating easy removal and inspection without risking burns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional oven rack is removed directly, then the rack can be taken out of the oven, but the user risks being burned by the hot rack
Solution Approach 1:
The oven door is segmented into two independent parts: the door assembly and the rack assembly. The rack can be removed from the oven cavity while the door remains closed, allowing users to handle the rack separately from the hot oven interior, thus eliminating burn risk while maintaining ease of operation
Solution Approach 2:
The door assembly acts as an intermediary between the user and the hot oven cavity. By allowing the rack to be removed through the closed door, the door serves as a protective barrier that mediates the interaction, preventing direct contact between the user and hot surfaces
2Adaptability or versatility
If the oven cavity is made smaller to create dual cavities, then more cooking flexibility is provided, but it becomes difficult to safely remove containers and view food without opening the door
Solution Approach 1:
The oven system is divided into independent door and rack assemblies that can move separately. The door can be opened to any angle while the rack remains extended, allowing users to access small cavities safely and view food items without fully opening the door, thus maintaining ease of operation while supporting versatile cooking configurations
Solution Approach 2:
The hinge assembly provides dynamic movement capabilities, allowing the door to pivot and the rack to extend independently. This dynamic design enables the door to be opened partially for viewing and accessing food in small cavities, while the rack can be fully extended for safe removal, resolving the access difficulty in compact dual-cavity ovens
3Ease of operation
If the rack assembly is extended fully for easy access, then user access to the rack is improved, but the rack cannot be secured in position
Solution Approach 1:
The lock assembly is designed to engage automatically when the rack reaches the extended position, preventing the rack from moving further or retracting unintentionally. This preliminary locking action secures the rack in the accessible extended position, maintaining both ease of operation and position stability
Solution Approach 2:
The lock assembly is integrated into the hinge mechanism and operates automatically based on the door and rack positions. When the door is opened and the rack extends, the lock engages without user intervention, and when the door closes, the lock releases automatically, allowing the system to self-regulate rack positioning and security
Data Source
AI summary
An oven including a chamber defining an oven cavity with an open front. A rack assembly is slidable between a retracted position and an extended position relative to the chamber. A door is provided for closing the open front. A hinge assembly connects the door to the rack assembly. The hinge assembly allows the door to slide between a first position and a second position with respect to the rack assembly. The hinge assembly includes a lock assembly for locking the rack assembly in the extended position. The lock assembly is moveable between a locked position and an unlocked position. The lock assembly is in the unlocked position when the door is in the first position thereby allowing the rack assembly to freely moved, and the lock assembly is in the locked position when the door is in the second position thereby securing the rack assembly in the extended position.