Adjustable Battery Pack Guard for Compact Power Tool Protection
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Solution Overview
Problem
Existing protective devices for battery-powered machining devices are inflexible and increase the size of the device unnecessarily when smaller interchangeable battery packs are used, while also failing to provide adequate protection against impacts, blows, and soiling.
Innovation Solution
A protective device that is adaptable to different sizes of interchangeable battery packs without tools, ensuring a constant enclosure size, improved ergonomics, and enhanced protection against impacts and soiling, while also reducing exposure to dirt and allowing for easier handling and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protective device is sized to accommodate the maximum permissible interchangeable battery pack, then protection against impacts and blows is improved, but the size of the machining device increases unnecessarily when smaller battery packs are used
Solution Approach 1:
The protective device incorporates a movable second housing part that can be adjusted to different positions along a guide element, allowing the enclosure size to dynamically adapt to the actual battery pack size inserted. This resolves the contradiction by enabling the device to provide adequate protection for maximum battery packs while maintaining a compact size when smaller battery packs are used.
Solution Approach 2:
The protective device allows changing the parameter of enclosure size by moving the second housing part to different positions. This enables the same protective device to provide appropriate protection levels for different battery pack sizes without unnecessarily increasing the overall device volume.
2Object-affected harmful factors
If the protective device is made larger to provide constant enclosure, then protection against soiling is improved, but ergonomics and handling are worsened
Solution Approach 1:
The adjustable second housing part enables the protective device to dynamically match the enclosure size to the actual battery pack dimensions. This provides adequate protection against soiling for smaller battery packs without the penalty of a permanently large device design, thereby maintaining good ergonomics and handling characteristics.
3Adaptability or versatility
If the protective device is made adjustable to different battery pack sizes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The protective device is segmented into a first housing part and a movable second housing part that can be independently adjusted. This segmentation enables adaptability to different battery pack sizes while keeping each segment relatively simple in design, avoiding the complexity that would result from a completely redesignable structure.
Solution Approach 2:
A guide element acts as an intermediary mechanism between the movable second housing part and the first housing part, providing a simple constraint system that enables adjustment while maintaining structural simplicity. The guide element mediates the relationship between the movable components and the fixed structure.
Data Source
AI summary
A protective device for at least one interchangeable battery pack of a battery powered machining device is disclosed, wherein the machining device comprises a housing and an electromechanical interface disposed on the housing, for mounting the at least one interchangeable battery pack without tools, and wherein the protective device is arranged at the electromechanical interface in such a way that it at least partially surrounds the interchangeable battery pack in connection with the housing of the machining device. It is proposed that the protective device is adaptable to a size, in particular a height, of the at least one interchangeable battery pack without tools. Further, the disclosure relates to a system including a protective device according to the disclosure and a battery powered machining device.