Combined Plug Arrangement for Handheld Machine Tool
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Solution Overview
Problem
Hand-held power tools, such as angle grinders, face issues with increased friction and electrical short circuits due to abrasive dirt particles entering the housing, which can lead to reduced durability and increased complexity from numerous parts.
Innovation Solution
A combined plug arrangement is introduced, where a primary and secondary connector part are integrated into a single common connector part, reducing the number of components, simplifying assembly, and minimizing dirt accumulation, with coding elements ensuring precise installation and a damping element to mitigate vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate connector parts are used for different electrical connections, then the functionality and control options are improved, but the device complexity and number of parts increase
Solution Approach 1:
The patent combines multiple separate connector parts (first connector part for motor connection, second connector part for sensor connection) into a single integrated common connector part. This merging reduces the total number of parts while maintaining all necessary electrical connections and control functions, directly resolving the contradiction between versatility and device complexity.
2Adaptability or versatility
If multiple separate connector parts are used, then the functionality is improved, but the risk of dirt deposits and electrical contact bridges increases
Solution Approach 1:
By integrating multiple connector functions into a single common connector part, the total surface area exposed to abrasive dirt particles is reduced. This minimizes the contact surface where dirt deposits could accumulate and create electrical contact bridges, while still providing all necessary control options through the integrated design.
3Adaptability or versatility
If multiple separate connector parts are used, then the control options are improved, but the assembly complexity increases
Solution Approach 1:
The integration of multiple connector parts into a single common connector part simplifies the assembly process. Instead of assembling multiple separate connectors, the integrated design allows for a single assembly operation, reducing assembly complexity while maintaining all necessary control functions through the unified structure.
Data Source
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AI summary
A plug arrangement in a machine tool comprises a primary plug part, which is associated with a drive motor, and a secondary plug part, said plug parts being assembled to form a common plug part.