Power Tool Battery Charger Water-Blocking Shell for Wet Exposure
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Solution Overview
Problem
Existing battery chargers for power tools are vulnerable to water damage when exposed to the elements, as water can enter the housing and harm the electrical system at non-water-blocked connections.
Innovation Solution
A battery charging unit with a water-blocking shell made of molded polymer that surrounds the electrical connections between the power input and the battery interface, creating a water-tight seal to protect against water and contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional battery chargers are used without water-blocking protection, then the device complexity is low and manufacturing is simple, but the reliability deteriorates when exposed to water or contaminants
Solution Approach 1:
The patent applies a water-blocking shell made of molded polymer that forms a protective barrier around the electrical connection. This shell acts as a flexible yet effective barrier that prevents water and contaminants from reaching the electrical components while maintaining the overall structure's integrity.
Solution Approach 2:
The water-blocking shell serves as an intermediary element between the electrical connection and the external environment. It mediates the interaction by providing a protective interface that allows the electrical connection to function while blocking harmful substances from reaching it.
2Reliability
If a water-blocking shell is added to protect electrical connections, then reliability improves, but the manufacturing complexity increases
Solution Approach 1:
The water-blocking shell is integrated with the housing as a single molded component rather than being a separate assembly. This merging of the shell with the housing structure simplifies the manufacturing process by reducing the number of parts and assembly steps while maintaining effective water protection.
Solution Approach 2:
The patent utilizes molded polymer material that can be formed into the desired shape through molding processes. By changing the physical state and properties of the polymer material during molding, the shell can be efficiently manufactured with the required water-blocking characteristics and structural integrity.
Data Source
AI summary
A battery charging unit including a battery interface. The battery interface includes a cover that surrounds at least a portion of the battery interface to protect exterior elements from damaging the electrical functionality of the battery interface.