Removable Wireless Interface Module for Hand-Held Power Tools
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Solution Overview
Problem
Existing hand-held power tools face limitations in data transmission due to obstacles and limited range of infrared connections, making it difficult to exchange communication interfaces efficiently and cost-effectively.
Innovation Solution
A hand-held power tool design featuring a removable interface housing with a radio module for wireless communication, allowing for easy installation, replacement, and secure data transmission over larger distances using Bluetooth or WLAN signals, with an energy storage system ensuring continuous power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an infrared transmission device is permanently integrated in the hand-held power tool, then data transmission is enabled, but the device complexity increases and replacement becomes complex and costly
Solution Approach 1:
The communication interface is segmented from the main tool body and placed in a separate, removable housing. This allows the interface to be independently replaced without affecting the entire tool, reducing replacement complexity and cost while maintaining data transmission capability.
Solution Approach 2:
The interface housing is designed to be dynamically removable and replaceable during operation. This dynamic design enables flexible adaptation to different communication needs (infrared, Bluetooth, WLAN) without permanently fixing a single interface type, simplifying the replacement process.
2Reliability
If an infrared transmission device is used, then data exchange is possible, but the transmission range is limited and obstacles prevent transmission
Solution Approach 1:
The removable interface housing can accommodate different types of communication interfaces (infrared, Bluetooth, WLAN). This multi-functionality allows the tool to adapt to various transmission requirements and environments, extending the effective transmission range and overcoming obstacle limitations through wireless options.
Solution Approach 2:
By changing the interface type parameter (from fixed infrared to removable wireless interfaces), the transmission characteristics such as range and obstacle penetration are improved. The system can select appropriate interfaces based on environmental conditions.
3Reliability
If the interface is permanently integrated in the housing, then the data transmission function is stable, but the installation and replacement process is complex and costly
Solution Approach 1:
Separating the interface from the main housing into a removable module simplifies both manufacturing and replacement processes. The interface can be pre-assembled and tested independently, then installed in the housing, reducing manufacturing complexity and enabling easy field replacement.
Solution Approach 2:
The interface is extracted from the permanent integration in the housing and placed in a removable housing that can be independently handled. This extraction simplifies the overall assembly process and enables cost-effective replacement without requiring complex disassembly of the entire tool.
4Ease of repair
If a removable interface housing is used, then the interface can be easily replaced, but the device structure becomes more complex
Solution Approach 1:
The removable housing design segments the interface component, allowing easy replacement while keeping the added structural complexity localized to just the housing portion, not the entire tool.
Solution Approach 2:
The additional structural elements (receiving opening, cover) are localized only where the interface is installed, rather than affecting the entire tool structure. This minimizes the overall impact on device complexity while enabling easy replacement.
Data Source
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AI summary
A hand-held power tool (300) is described, comprising a housing (305) with a handle (315), a drive motor (335) arranged in the housing, and a first interface (380), wherein the interface is designed to receive information from at least one second external interface (980) and/or to send information to at least one second external interface, wherein the housing has a receiving opening (307) in which the first interface is removably arranged. Furthermore, the receiving opening can be releasably closed by a cover (308), the cover sealing the housing externally. According to the invention, the receiving opening is arranged in the region of the rear end of the housing of the hand-held power tool behind the drive motor.