Battery Guard Frame for Impact-Protected Machine Tools
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Solution Overview
Problem
Existing protective devices for accumulators in machine tools are inadequate, complex, and hinder the use of battery-powered tools, as they fail to effectively protect the accumulators from mechanical impacts.
Innovation Solution
A machine tool with a protective device that includes a first and second frame element designed as U-shaped brackets, providing a modular and flexible structure to absorb and secure two accumulators, with a length of 350 mm to 450 mm and contact areas for safe parking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective devices for accumulators are made more robust to protect against mechanical impacts, then protection effectiveness is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The protective device is divided into two detachable frame elements that can be separated and reconnected. This segmentation allows the protective device to provide robust protection when assembled while enabling easy disassembly for battery removal, thus resolving the contradiction between protection effectiveness and ease of operation without increasing overall device complexity
Solution Approach 2:
The frame elements serve multiple functions: they provide mechanical protection for the accumulators, enable secure mounting to the machine tool housing, and facilitate easy battery removal when detached. This multi-functionality improves protection effectiveness without requiring additional complex components
2Reliability
If protective devices for accumulators are made more robust to protect against mechanical impacts, then protection effectiveness is improved, but ease of operation deteriorates
Solution Approach 1:
The protective device is divided into two detachable frame elements that can be separated and reconnected. This segmentation allows the protective device to provide robust protection when assembled while enabling easy disassembly for battery removal, thus resolving the contradiction between protection effectiveness and ease of operation without increasing overall device complexity
Solution Approach 2:
The protective device transitions from a static enclosed structure to a dynamic system where frame elements can be detached and reconnected. This dynamic capability allows the device to switch between protected storage mode and easy access mode, resolving the contradiction between protection effectiveness and ease of operation
3Ease of repair
If a modular design with detachable frame elements is used, then ease of repair is improved, but device complexity increases
Solution Approach 1:
The protective device is divided into two detachable frame elements that can be separated and reconnected. This segmentation allows the protective device to provide robust protection when assembled while enabling easy disassembly for battery removal, thus resolving the contradiction between protection effectiveness and ease of operation without increasing overall device complexity
Solution Approach 2:
The modular frame elements can be easily detached and replaced if damaged, allowing for simple repair or replacement of individual components rather than the entire protective device. This improves ease of repair while the simple detachment mechanism keeps the added complexity minimal
Data Source
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AI summary
A machine tool, in particular a chipping hammer, having a first and a second side grip and a machine tool housing comprising an interface for releasably receiving and holding a first and a second rechargeable battery, wherein a side grip axis which passes through the first and second side grips runs substantially perpendicularly to a working axis running through the machine tool housing. The machine tool has a safety device for protecting the first and the second rechargeable battery, said device having an inner volume for receiving, at least in part, the first and the second rechargeable battery.