Blender Dual Interlock Assembly for Exposed Blade Prevention
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Solution Overview
Problem
Current blenders lack redundant safety mechanisms to ensure the container is securely attached to the blade assembly and the blade assembly is properly mounted on the motor base, posing a risk of injury from exposed spinning blades.
Innovation Solution
The implementation of dual safety mechanisms, including a blocking mechanism and an emitter-detector system, to prevent motor activation unless the container is securely attached to the blade assembly and the assembly is securely mounted on the base, with the mechanisms working in tandem and redundantly to ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single safety mechanism is used to prevent motor activation when the container is improperly mounted, then the device complexity is reduced, but the reliability of safety protection is insufficient
Solution Approach 1:
The safety protection system is segmented into two independent mechanisms: a first safety mechanism that detects whether the container is properly mounted on the blade assembly, and a second safety mechanism that detects whether the blade assembly is properly mounted on the motor base. Each mechanism independently monitors a specific safety condition, and both must be satisfied for motor activation. This segmentation increases reliability by ensuring that failure or bypassing of one mechanism does not compromise overall safety.
Solution Approach 2:
The patent implements preemptive safety checks before motor activation. The first safety mechanism verifies container attachment to the blade assembly, and the second safety mechanism verifies blade assembly attachment to the motor base, before allowing the motor to start. This prior verification prevents dangerous operating conditions from occurring in the first place, cushioning against potential harm before it can manifest.
2Ease of operation
If the container is not securely attached to the blade assembly when the motor is activated, then the ease of operation is improved, but the harmful factors increase due to exposed spinning blades
Solution Approach 1:
The first safety mechanism applies preliminary anti-action by preventing motor activation when the container is not securely attached to the blade assembly. The detector in the blade assembly remains in an inactive state unless the container is properly mounted, thereby preemptively blocking the harmful action of the motor running without proper container attachment. This eliminates the risk of exposed spinning blades before the dangerous condition can occur.
3Ease of operation
If the blade assembly is not securely mounted on the motor base when the motor is activated, then the ease of operation is improved, but the harmful factors increase due to exposed impeller and blades
Solution Approach 1:
The second safety mechanism applies preliminary anti-action by preventing motor activation when the blade assembly is not securely mounted on the motor base. The detector on the motor base remains inactive unless the blade assembly is properly mounted, thereby preemptively blocking the harmful action of the motor running without proper blade assembly attachment. This eliminates the risk of exposed impeller and blades before the dangerous condition can occur.
Data Source
AI summary
A blender for processing comestible matter includes a base with a motor, a blade assembly, and a container. The blender further comprises a first safety mechanism and a second safety mechanism. The first safety mechanism functions to ensure that the container is securely attached to the blade assembly before the blade assembly can be mounted to the base. The second safety mechanism functions to ensure the motor in the base can only be powered on when the container and the blade assembly are securely mounted to the base. The blender is operable by affixing the container to the blade assembly, and then the assembly to the base, such that both safety mechanisms are released to permit the motor to be activated.