Removable Battery Protector with Clearance for Power Tool Impact Absorption
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Solution Overview
Problem
Existing battery-powered power tools with direct cushioning protection members on the battery pack do not provide sufficient impact absorption when the tool is struck or dropped, leading to inadequate protection for the battery pack.
Innovation Solution
A removable battery protector with a frame member, either made of rigid metal, elastic elements, or resin, is mounted to the tool body, creating a clearance between the protector and the battery pack to absorb external forces, thereby preventing direct transmission of impact to the battery pack, and allowing for easy replacement if damaged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cushioning protection member is directly mounted on the battery pack, then the battery pack is protected against impact, but sufficient impact absorbing effectiveness cannot be obtained
Solution Approach 1:
The patent introduces a protector as an intermediary component between the external environment and the battery pack. This protector includes a battery pack protection area with a frame member that is disposed to cover the outer surface of the battery pack with a clearance therebetween, preventing external force from being directly transmitted to the battery pack while providing effective impact absorption
Solution Approach 2:
The patent implements beforehand cushioning by providing a protector with a battery pack protection area that is configured in advance to absorb and distribute impact forces before they reach the battery pack. The frame member with clearance creates a protective buffer zone that cushions against potential impacts during use or carry
2Ease of repair
If a protector is removably mounted to the tool body, then the protector can be easily replaced if broken and can be removed during operation, but the structure becomes more complex
Solution Approach 1:
The patent applies segmentation by making the protector a separable, removably mounted component rather than a permanently integrated part. The protector can be detached from the tool body and replaced independently when damaged, and can also be removed during operation depending on the working conditions, without requiring complex integration mechanisms
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The battery protector effectively enhances the impact absorption and protection of the battery pack by distributing external forces away from the pack, while being easily removable and replaceable, thus improving the overall protection performance and operational convenience.
Implementation Method 1
the battery pack protection area is disposed on at least part of the outer surface of the battery pack with a clearance therebetween and prevents an external force upon the battery pack protection area from being transmitted to the battery pack
Data Source
AI summary
It is an object of the invention to provide a technique to further increase protection performance for a battery pack of power tool. A representative power tool may include a tool body to which a tool bit is coupled to perform a predetermined operation, a driving motor that is disposed within the tool body, a battery pack that supplies driving current to the driving motor, the battery pack being removably mounted to the tool body and placed on the outside of the tool body in an exposed state, and a protector that is removably mounted to the tool body to protect the battery pack. The protector may include a battery pack protection area that protects the battery pack mounted to the tool body when the protector is mounted to the tool body. The battery pack protection area is dosed on at least part of the outer surface of the battery pack with a clearance and prevents transmission of external force upon the battery pack protection area to the battery pack.