Handheld Vacuum Technical Block With Guide-Rib Interface Assembly
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Solution Overview
Problem
The existing modular assembly structure of handheld vacuum cleaners, as seen in EP3632284 B1, is complex, leading to reliability and manufacturing cost issues.
Innovation Solution
A technical block for a portable vacuum cleaner with a human-machine interface and guide rib, integrating all electrical and electronic functions, simplifies assembly by eliminating the need for dual power components and ensuring a robust mechanical interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the modular assembly structure is used with separate technical block and handle unit, then the vacuum cleaner can be manufactured independently and assembled together, but the structure becomes complex and reliability decreases
Solution Approach 1:
The vacuum cleaner is divided into two main modules: a technical block containing the motor assembly and electrical functions, and a handle unit containing the receiving housing. This segmentation allows independent manufacturing of both modules while maintaining a relatively simple overall structure through standardized connection interfaces.
2Adaptability or versatility
If the handle unit includes power components for both handle and technical unit, then all components can be powered, but the handle unit structure becomes complex and reliability decreases
Solution Approach 1:
The power supply function is extracted from the handle unit and concentrated in the technical block. The technical block includes a power connector that receives power cables from the handle unit, allowing the handle unit to have a simpler structure without power distribution components while still providing power to all necessary components.
3Device complexity
If the human-machine interface is integrated into the technical block with guide rib, then assembly is simplified and cost reduced, but the interface must serve dual functions
Solution Approach 1:
The human-machine interface is designed with a guide rib that serves dual functions: it provides mechanical guidance during assembly of the technical block into the receiving housing, and it also serves as the interface for user interaction. This multi-functionality reduces the number of separate components needed and simplifies the assembly process.
4Ease of operation
If the guide rib cooperates with groove in housing, then assembly is guided and error-proofing is provided, but the mechanical interface complexity increases
Solution Approach 1:
The guide rib and groove form a self-guiding mechanism that automatically aligns the technical block with the receiving housing during assembly. The operator simply needs to insert the technical block, and the guide rib naturally directs it into the correct position within the groove, providing error-proofing without requiring complex alignment procedures or additional fastening steps.
Data Source
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AI summary
This technical block (6) for a portable vacuum cleaner comprises a main body (14) receiving a motor assembly (16), the technical block (6) being configured so that, during the assembly of the vacuum cleaner, it is attached to a handle block (8) comprising a handle (38) and a housing (40) for receiving the main body. According to the invention, the technical block (6) also comprises a human-machine interface (28) positioned on an outer face of the main body (14), and the human-machine interface (28) forms a guide rib (114) adapted to cooperate with a groove (116) in the housing during the assembly phase.