Hand-held Power Tool Mode Switching via Universal Receiver
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Solution Overview
Problem
Existing hand-held power tools lack versatility and efficiency in adapting to different operational modes, such as rotary hammering and stirring, due to limited adjustable settings and mode-specific configurations.
Innovation Solution
A hand-held power tool design featuring a user interface that allows for selectable rotary hammer and stirring modes, with a tool receiver interface enabling easy tool changes and a combination of electronic and pneumatic mechanisms for adaptable operation, including wireless communication and sensor-controlled settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hand-held power tool is designed with fixed functionality for a single operation mode, then the device complexity is reduced and manufacturing is easier, but the adaptability and versatility are limited
Solution Approach 1:
The power tool is designed with a universal tool receiver interface that can accommodate different tool types (drill bits, impact tools, stirring tools) through a single standardized connection mechanism. The control unit enables multiple operational modes (drilling, impact, stirring) by detecting the attached tool type and automatically configuring appropriate parameters, eliminating the need for separate devices for different functions.
Solution Approach 2:
The tool receiver incorporates a movable locking mechanism with a locking element that can be positioned in different states (locked/unlocked) to accommodate tool changes. The system dynamically adjusts its operational characteristics based on the detected tool type, with the control unit modifying motor parameters and impact mechanism activation accordingly.
2Adaptability or versatility
If the power tool includes multiple operational modes with adjustable parameters, then the adaptability to different tasks is improved, but the device complexity and control mechanisms increase
Solution Approach 1:
The system automatically detects the type of tool attached to the receiver and self-configures its operational parameters. The control unit identifies the tool type (drill bit, impact tool, or stirring tool) and automatically selects the appropriate motor speed, impact activation, and other settings without requiring manual intervention, thereby reducing control complexity despite offering multiple modes.
Solution Approach 2:
The power tool utilizes variable motor speed control and adjustable impact mechanism parameters that can be dynamically changed based on the detected tool type. The control unit modifies operational parameters such as rotational speed, impact frequency, and power delivery in real-time to optimize performance for each specific task.
3Ease of operation
If the tool receiver allows easy tool changes without tools, then the ease of operation is improved, but the reliability of tool connection may be compromised
Solution Approach 1:
The tool receiver is divided into functional segments: a connection interface for tool attachment, a movable locking mechanism with a locking element, and a tool holder. The locking element can be independently actuated to secure the tool, providing a simple yet reliable connection system that separates the attachment function from the locking function for easier operation while maintaining security.
Solution Approach 2:
The locking mechanism utilizes a spring-loaded locking element that automatically engages when the tool is inserted and can be released by a simple mechanical action. This replaces complex multi-step locking systems with a more straightforward elastic mechanism that provides reliable tool retention while maintaining ease of tool changes.
Data Source
AI summary
A hand-held power tool includes a housing in which a drive unit and an impact-mechanism unit are arranged. The hand-held power tool further includes a tool-receiver interface configured to releasably connect with a tool receiver, the tool receiver configured as a stirrer-basket receiver. A user interface is configured to set at least one of a rotary-hammer mode and a stirring mode for the hand-held power tool.