Impact Driver Reducer with Multi-Speed Switcher
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing impact drivers can only select between two speed modes, high and low, and lack the ability to choose from three or more variable speeds to match different operational modes, limiting their versatility and effectiveness.
Innovation Solution
A power tool and impact tool design that incorporates a motor, a reducer capable of selecting from three or more variable speeds, and a switcher mechanism to actuate specific actuators based on predetermined operational modes, allowing for the selection of appropriate speeds for drill, vibration drill, screwdriver, and impact modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the reducer is configured with only two speed modes (high and low), then the device complexity is reduced, but the adaptability to different operational modes is insufficient
Solution Approach 1:
The reducer is designed with a dynamic switching mechanism that allows it to transition between different speed modes (first speed mode and second speed mode) based on the operational requirements. The switcher component enables the reducer to adapt its speed output dynamically, providing at least three variable speeds to match different actuator requirements while maintaining a relatively compact structure.
Solution Approach 2:
The reducer is designed to serve multiple functions by providing different speed outputs (at least three variable speeds) that can accommodate various actuators and operational modes including impact mode, drill mode, vibration drill mode, and screwdriver mode. This multi-functionality allows a single reducer design to support diverse tool operations without requiring separate dedicated mechanisms for each mode.
2Adaptability or versatility
If the reducer provides multiple variable speeds, then the versatility is improved, but the device complexity increases
Solution Approach 1:
The speed selection mechanism is segmented into distinct functional components: a switcher that selects between different speed modes, and a reducer that implements the actual speed reduction. This segmentation allows the complex speed selection function to be broken down into manageable parts, where the switcher handles the selection logic and the reducer handles the mechanical speed reduction, making the overall system more manageable and maintainable.
Solution Approach 2:
The switcher acts as an intermediary component between the power source and the reducer, mediating the selection of different speed modes. This intermediary element simplifies the control architecture by providing a dedicated component that handles the speed selection function, allowing the main reducer mechanism to focus on the speed reduction function without the complexity of integrated control.
3Reliability
If the reducer limits speed selection in impact mode, then the reliability of impact function is improved, but the operational flexibility is reduced
Solution Approach 1:
The system dynamically adjusts the speed selection availability based on the operational mode. In impact mode, the reducer is configured to provide only the first speed mode (high speed) to ensure reliable impact performance. In other modes such as drill or vibration drill, the system allows selection between multiple speed modes. This dynamic configuration ensures that impact reliability is maintained when needed while preserving operational flexibility in other contexts.
Solution Approach 2:
Different speed selection characteristics are applied locally to different operational modes. The impact mode specifically receives the first speed mode (high speed) to optimize impact delivery, while other modes can access multiple speed options. This local quality approach ensures that each operational mode receives the appropriate speed characteristics for optimal performance without compromising the overall system's versatility.
Data Source
AI summary
A reducer appropriately selects from three or more variable speeds to match multiple operational modes. An impact driver includes a motor, a reducer that reduces rotation from the motor to select from three or more variable speeds, a plurality of actuators to be actuated by the rotation reduced by the reducer, and a switcher that selects, from the plurality of actuators, a specific actuator to be actuated in a predetermined operational mode. The switcher causes the reducer to cooperate with the selected specific actuator and actuates the reducer at a predetermined variable speed of the three of more variable speeds corresponding to the predetermined operational mode of the selected specific actuator.