Pivoting Built-In Toaster With Orientation Safety Interlock
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Solution Overview
Problem
Conventional toasters lack a compact, easy-to-handle design for installation in drawers, and there is a need for a solution that prevents roasting when the toaster is folded down to avoid fire hazards and ensures easy crumb tray removal without crumbs falling out.
Innovation Solution
A built-in toaster with a flat, cuboid body that pivots from a lying to a standing position, equipped with a safety switch, cooling channels, and a removable crumb receptacle design that prevents crumbs from falling, along with a joint system for easy installation and removal, and heat insulation to manage heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the toaster is designed with a flat body that pivots from lying to standing position, then the ease of operation is improved, but the device complexity increases due to the joint mechanism
Solution Approach 1:
The toaster body is designed to be dynamically reconfigurable between lying and standing positions through a pivot joint mechanism. This dynamic capability allows the toaster to adapt its orientation for different operational contexts, improving ease of operation while maintaining a relatively simple mechanical structure through the use of a single degree of freedom joint.
2Adaptability or versatility
If the toaster is installed in a drawer with the body in lying position, then the adaptability is improved, but the safety deteriorates due to fire hazard when roasting is prevented
Solution Approach 1:
The safety switch is designed to preemptively prevent the roasting function from activating when the toaster body is in the lying position. This preliminary anti-action mechanism detects the orientation state and blocks the heating function before any harmful action could occur, thereby maintaining safety while allowing adaptability in installation positions.
Solution Approach 2:
The gravity-dependent ball mechanism converts the potential harm of unintended activation in the lying position into a beneficial safety feature. The ball's position under gravity naturally serves as a mechanical interlock that prevents operation unless the toaster is properly oriented, turning a physical constraint into a safety advantage.
3Ease of operation
If the crumb receptacle is removed when the body is in lying position, then the ease of operation is improved, but the loss of substance increases as crumbs fall out
Solution Approach 1:
The crumb receptacle design incorporates a vertical wall that creates a containment dimension when the toaster is in the lying position. This additional dimensional barrier prevents crumbs from falling out during removal, allowing easy operation without substance loss by effectively adding a protective boundary in the vertical direction.
4Reliability
If cooling channels are added to the body, then the reliability is improved by preventing fire, but the device complexity increases
Solution Approach 1:
The cooling function is extracted as a separate system component with dedicated cooling channels integrated into the body structure. This extraction allows the cooling function to be implemented independently from the heating and control systems, improving reliability through functional separation while managing complexity through modular design of the cooling pathway.
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 solution provides a compact, easy-to-handle toaster that can be universally fitted in most kitchen drawers, ensures safe operation by preventing roasting when folded down, and effectively manages heat dissipation to prevent fires, while allowing easy crumb tray removal without crumbs falling out.
Implementation Method 1
For this purpose, it is particularly preferred to provide at least one cooling channel in the body, preferably a convection cooling channel
Implementation Method 2
In addition, insulation may also be provided, preferably located between a heater and the outside of the body
Data Source
Figure 1
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Figure 3
AI summary
The toaster has a flat body (10) receiving and toasting food products i.e. bread, and including two long sides and short sides. A hinge (50) includes a joint for fitting into a drawer, and is connected with the body such that the body is pivotable between a horizontal position i.e. holdup position, and a vertical position i.e. operating position. The long sides are turned towards the joint in the horizontal position. The short sides are turned towards the joint in the vertical position, where a roasting operation is allowed only in the vertical position.