Hand-held Power Tool Communication Interface for Gear Shifting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing portable power tools with shiftable gearboxes and percussion mechanisms require complex manual operations for gear shifting and percussion activation, making them difficult for inexperienced users to operate effectively.
Innovation Solution
A portable power tool with a communication interface that allows for user guidance via a mobile device, enabling simple and application-specific shifting of the gearbox and activation/deactivation of the percussion mechanism through a user-friendly interface, using a servomotor and control elements like switches or buttons, and optionally including gesture control and wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual shifting elements are used for gear changing and percussion activation, then the device structure remains simple, but the ease of operation deteriorates due to complex manual operations required
Solution Approach 1:
The patent replaces manual mechanical shifting operations with an automated servomotor-driven shifting mechanism. The control unit receives shifting instructions from a user guidance unit (mobile device) and automatically actuates the shifting element to change gear ratios, eliminating the need for complex manual shifting operations while maintaining relatively simple device structure.
Solution Approach 2:
The patent introduces a user guidance unit (mobile device) as an intermediary between the user and the power tool. This intermediary provides application-specific guidance and sends shifting instructions to the control unit, simplifying the user interface while managing the complexity through a separate communication channel.
2Adaptability or versatility
If application-specific gear shifting is implemented, then the adaptability improves, but the device complexity increases due to additional control mechanisms
Solution Approach 1:
The patent implements a shiftable gearbox that can operate in multiple gear ratios (first gear ratio for high torque, second gear ratio for high speed) within a single drive unit. This multi-functional gearbox provides adaptability for different drilling applications without requiring separate devices for each function.
Solution Approach 2:
The patent uses a servomotor and control unit to automatically manage gear shifting based on application requirements. The control unit receives shifting instructions from a user guidance unit and automatically adjusts the gear ratio, providing adaptability while keeping the control mechanism relatively simple through automated operation.
3Ease of operation
If automated servomotor shifting is used, then the ease of operation improves, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces manual mechanical shifting with an automated servomotor system. The servomotor is integrated into the drive unit and controlled by a control unit that receives simple shifting instructions from a user guidance unit. This automation improves ease of operation while the modular design keeps manufacturing relatively straightforward.
Solution Approach 2:
The shifting mechanism operates autonomously based on received instructions. The servomotor automatically performs the shifting action without requiring manual intervention, and the system self-manages the gear ratio changes based on control signals from the user guidance unit, reducing the need for complex manual control mechanisms.
Data Source
AI summary
A hand-held power tool includes a drive unit that has at least one gear-shift transmission which can shift at least between two different gear steps; a striking mechanism that can be activated for performing a striking mode is associated with the drive unit; a shifting unit is provided for shifting the gear-shift transmission between the at least two different gear steps and/or for activating/deactivating the striking mechanism, and a communication interface is provided for communicating with a user-actuated user guiding unit and is configured to receive shifting instructions from the user guiding unit in order for the transmission to shift in an application-specific manner between the two different gear steps and/or for the striking mechanism to be activated/deactivated.