Grinder Side-Mounted Charging Contact to Prevent Powder Interference
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Solution Overview
Problem
Current grinders face issues with charging contact reliability due to grinding powder discharge, which can lead to poor contact between charging contact pieces, and the complexity of designing charging circuit structures at the lower end.
Innovation Solution
The design positions the charging contact piece on the side of the grinder's upper shell, with all charging-related structures contained within the upper shell, allowing for side contact charging and avoiding complex circuitry in the lower shell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the charging contact piece is positioned at the lower end of the grinder, then charging can be performed when the grinder is placed on the base, but grinding powder discharged from the lower end causes poor contact between the charging contact piece and power supply contact piece
Solution Approach 1:
The charging contact piece is repositioned from the lower end (vertical dimension) to the side surface (lateral dimension) of the upper shell. This spatial relocation in another dimension allows the charging interface to be positioned away from the grinding powder discharge path while maintaining charging functionality when the grinder is placed on the base.
2Adaptability or versatility
If the charging contact piece is positioned at the lower end of the grinder, then charging function can be implemented, but the structure becomes complex and difficult to design
Solution Approach 1:
The charging contact piece is integrated into the upper shell structure, merging the charging function with the existing upper shell assembly. This consolidation eliminates the need for separate lower-end charging structures and reduces overall device complexity while maintaining charging adaptability.
Data Source
AI summary
The present invention discloses a grinder, comprising an upper shell, a lower shell, a PCB, a charging contact piece and a battery, wherein the lower end of the upper shell is connected to the upper end of the lower shell, the PCB is electrically connected to the battery, one end of the charging contact piece is electrically connected to the PCB, the battery and the PCB are both connected to the inside of the upper shell, and the other end of the charging contact piece protrudes from and is exposed on the side of the upper shell. In the present invention, the charging contact piece is provided on the side of the grinder to realize side contact charging, the structures related to the charging function are provided in the upper shell, and providing the structures related to the switched-on circuit in the lower shell is avoided.