Hand Power Tool Switching Unit for Multi-Mode Operation
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Solution Overview
Problem
Hand power tools, such as angle grinders, lack flexibility in operating modes, with existing systems typically offering only a single operating mode that does not efficiently manage power consumption or provide varying power levels as needed for different applications.
Innovation Solution
Incorporating a switching element with multiple switching positions to enable different operating modes, including normal, eco, and boost modes, along with a single-piece design for the switching and actuating elements, and utilizing an EC motor for high-power and compact drive units, allowing for efficient power management and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single operating mode is provided in hand power tools, then the device complexity is reduced, but the adaptability to different applications deteriorates
Solution Approach 1:
The switching element is designed with multiple switching positions (first, second, and third positions) that enable the hand power tool to operate in different operating modes (first, second, and third modes). This multi-functionality allows a single switching element to provide various operating modes for different applications, resolving the contradiction between device complexity and adaptability.
2Adaptability or versatility
If multiple operating modes are added to hand power tools, then the adaptability to different applications is improved, but the device complexity increases
Solution Approach 1:
The patent combines the switching element and actuating element into a single integrated component. This merging reduces the overall device complexity while still providing multiple switching positions for different operating modes, thus resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The integrated switching element performs multiple functions by providing first, second, and third switching positions that correspond to different operating modes. This universal design allows one component to replace what would traditionally require multiple separate components, reducing complexity while maintaining versatility.
3Productivity
If normal operation mode provides maximum power for continuous operation, then the productivity is maintained, but the energy consumption increases
Solution Approach 1:
The hand power tool provides dynamic operating modes that allow the operator to switch between first, second, and third operating modes based on the application requirements. The switching element enables transition between these modes, allowing the system to adapt power consumption to actual needs rather than operating continuously at maximum power, thus resolving the contradiction between productivity and energy consumption.
Data Source
AI summary
A hand power tool includes a drive unit, an electronic unit, and a switching unit. The switching unit includes at least one actuating element configured to activate and deactivate the drive unit. The switching unit also includes at least one switching element configured to be positioned in at least one first switching position to set at least one first operating mode. The at least one switching element is also configured to be positioned in at least one second switching position to set at least one second operating mode.