Toaster Handle Locking Assembly for Stable Grill Plate Positioning
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Solution Overview
Problem
Existing toasters lack a reliable mechanism for safely and securely locking the upper grilling plate in predetermined positions, which can lead to instability and safety issues during operation.
Innovation Solution
A handle assembly with a connection device featuring spring-loaded rollers that engage with slots to lock the upper grilling plate in specific positions relative to the lower plate, ensuring secure and adjustable positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a handle mechanism is provided to elevate the upper grilling plate, then the upper plate can be opened for loading food, but the upper plate lacks stable locking positions when elevated
Solution Approach 1:
The connection device incorporates spring-loaded balls that can dynamically engage with slots at different positions along the handle's travel path. This allows the system to transition from a purely movable state (when opening/closing) to a locked stationary state (when positioned), providing both ease of operation and stable positioning. The springs enable the balls to automatically engage with slots without requiring precise manual alignment.
Solution Approach 2:
The spring-loaded balls act as intermediary elements between the handle and the slots in the connection device. These balls mediate the locking function by engaging with the slots to prevent unintended movement, while still allowing controlled movement when the handle is deliberately moved by the user. This intermediary mechanism resolves the contradiction by providing stability only when needed, without interfering with normal operation.
2Adaptability or versatility
If the upper grilling plate is made rotatable relative to the lower plate, then the plate can be opened and closed, but the plate may become unstable or unsafe during operation
Solution Approach 1:
The connection device with multiple slots and spring-loaded balls creates a dynamic locking system that adapts to different operational states. When the upper plate is in positions where locking is needed (elevated positions), the balls engage with slots to prevent movement. When the plate needs to move (opening/closing), the handle mechanism allows controlled rotation. This dynamic system eliminates safety hazards by preventing unintended movement while preserving necessary adaptability.
Solution Approach 2:
The spring-loaded mechanism provides a cushioning effect by allowing controlled play before engagement. The springs absorb shocks and prevent sudden, unsafe movements of the upper plate. This beforehand cushioning ensures that even if external forces act on the plate, the spring mechanism prevents abrupt movements that could create safety hazards, while still allowing deliberate opening and closing operations.
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 safe and stable locking mechanism for the upper grilling plate, enhancing user safety and operational stability by allowing precise adjustment and secure locking of the plate, thereby improving the overall toasting experience.
Implementation Method 1
A handle assembly with a connection device featuring spring-loaded rollers that engage with slots to lock the upper grilling plate in specific positions relative to the lower plate
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The present invention proposes a toaster appliance in which an upper grilling plate is typically hinged to the lower grilling plate in a manner to be rotatable relative to said lower plate. The position of said upper plate relative to said lower plate is conventionally adjusted by means of a handle having predetermined locking positions according to the present invention. Said handle is provided with a connection device having a predetermined locking position, which is set to a perpendicular position of said upper plate relative to said lower plate. Said locking position is determined by a plurality of slots into which a set of spring loaded balls engages within said connection device.