Food Processor Safety Interlock for Bowl-First Assembly
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Solution Overview
Problem
Household food-processing devices lack a safety mechanism to prevent unintended interaction with rotating tools during operation, posing a risk to users.
Innovation Solution
A safety mounting system that ensures the base unit can only be mounted to the processing tool unit when the receiving unit is in place, and vice versa, using interlocking mechanisms and a safety latch to block unauthorized assembly or disassembly, thereby preventing operation without the receiving unit being securely attached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base unit is mounted to the processing tool unit without the receiving unit, then the device can be operated, but user safety is compromised due to unintended interaction with rotating tools
Solution Approach 1:
The safety mounting mechanism performs preliminary verification by checking whether the receiving unit is properly mounted to the processing tool unit before allowing the base unit to be mounted. The interlocking mechanism ensures that the base unit can only be attached when the receiving unit is in place, preventing operation without proper assembly and eliminating the safety hazard before it can occur.
Solution Approach 2:
The safety mounting mechanism acts as an intermediary between the processing tool unit and the base unit. This intermediate safety device mediates the mounting process by controlling whether the base unit can be attached, based on the presence and proper mounting of the receiving unit, thus enforcing safety without requiring complex external control systems.
2Ease of operation
If the receiving unit is made detachable for cleaning and storage, then ease of operation is improved, but safety is reduced due to possibility of operation without receiving unit
Solution Approach 1:
The mounting system is designed to be dynamic rather than fixed. The receiving unit can be detached for cleaning and storage, and the base unit can be mounted or detached as needed. However, the safety mounting mechanism dynamically controls the mounting process to ensure that the base unit can only be attached when the receiving unit is properly in place, thus maintaining safety while preserving operational flexibility.
Solution Approach 2:
Before allowing the base unit to be mounted (which enables operation), the safety mounting mechanism performs a preliminary check to ensure the receiving unit is properly attached to the processing tool unit. This preliminary action ensures safety is verified before operation is permitted, while still allowing the receiving unit to be detached when needed for cleaning or storage.
3Reliability
If interlocking mechanisms are added to prevent unauthorized assembly, then safety is improved, but device complexity increases
Solution Approach 1:
The safety mounting mechanism combines multiple functions into a single integrated system. It merges the mounting function, the safety verification function, and the interlocking control function into one unified mechanism. This allows the system to enforce safety protocols and control assembly authorization without adding multiple separate complex mechanisms, thus improving safety while minimizing the increase in overall device complexity.
Solution Approach 2:
The safety mounting mechanism is designed to perform multiple functions: it verifies proper assembly, controls mounting authorization, and prevents unauthorized operation. This multi-functional approach allows a single mechanism to provide comprehensive safety control without requiring multiple separate devices, thereby improving reliability while keeping the added complexity manageable.
Data Source
AI summary
The present invention relates to household food-processing devices. In order to provide a household food-processing device with a mounting system ensuring that it is not possible to touch the processing tool in an operating state, a household food-processing device (10) is provided that comprises a base unit (12), a processing tool unit (14) with a processing tool (18) for processing supplied food, and a receiving unit (16) with a receiving volume (20) for receiving the processed food. The base unit provides a driving force for actuating the processing tool. The receiving unit is mountable to the processing tool unit, and the base unit is mountable to the processing tool unit. The processing tool unit is provided with a safety mounting mechanism (38) defining a mounting order, according to which the base unit is mountable to the processing tool unit only when the receiving unit is mounted to the processing tool unit; and according to which the de-mounting of the receiving unit from the processing tool unit is blocked when the base unit is mounted to the processing tool unit.