Electrostatic Discharge Dissipation Structure for Electric Tools
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Solution Overview
Problem
Electric tools, such as blowers, face issues with electrostatic discharge buildup that can damage components and cause unwanted discharges to objects, which existing designs fail to adequately address.
Innovation Solution
Incorporating an electrostatic discharge dissipation structure with a conductive interface engaging the rotor and a conductor connected between the interface and a terminal, which dissipates electrostatic charge by grounding the rotor, thereby preventing damage and unwanted discharges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional electric tool design is used, then device complexity is low, but electrostatic discharge buildup damages components
Solution Approach 1:
The electrostatic discharge dissipation structure merges the rotor assembly with the discharge dissipation function. The rotor serves dual purposes: mechanical rotation for tool operation and electrostatic charge collection for discharge dissipation. This integration protects components from electrostatic damage without adding separate complex structures.
Solution Approach 2:
The rotor is designed with multi-functionality, serving both as the mechanical driving element and as the electrostatic charge collection point. The conductive interface on the rotor hub enables it to function as both a mechanical component and an electrostatic discharge pathway, eliminating the need for dedicated electrostatic protection structures.
2Reliability
If electrostatic discharge dissipation structure is added, then component protection improves, but device complexity increases
Solution Approach 1:
The patent combines the electrostatic discharge dissipation function with existing structural elements. The conductor is integrated into the housing structure, and the conductive interface is formed on the rotor hub, merging protection functionality with mechanical components rather than adding separate dedicated structures.
Solution Approach 2:
The rotor assembly serves itself by providing both mechanical function and electrostatic protection. The natural rotation and conductive properties of the rotor enable it to collect and dissipate electrostatic charges without requiring external active components or complex control systems.
3Ease of operation
If conventional design without electrostatic protection is used, then ease of manufacture is high, but unwanted discharges to objects occur
Solution Approach 1:
The electrostatic discharge pathway is pre-established through the conductive interface on the rotor hub and the conductor in the housing. This preliminary configuration ensures that electrostatic charges are dissipated before they can build up to dangerous levels or cause unwanted discharges to objects during operation.
Solution Approach 2:
The conductor acts as an intermediary element, providing a controlled pathway for electrostatic charges to travel from the rotor to the housing terminal. This mediator prevents direct unwanted discharges to objects by routing charges through a designated safe pathway.
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
Effectively dissipates electrostatic discharge, protecting the tool's components and preventing unwanted discharges to objects, ensuring safe and reliable operation.
Implementation Method 1
a conductor electrically connected between the conductive interface and the terminal
Implementation Method 2
electrostatic discharge dissipation structure... operable to dissipate electrostatic discharge in the tool
Data Source
AI summary
An electric tool, a blower and a method of discharging electrostatic charge in an electric tool. The tool may include a housing, a motor supported by the housing and powered by a power source, the motor including a rotor, a fan supported by the housing and driven by the motor to cause an air flow, and a wire electrically connected between the rotor and a terminal of the power source and operable to dissipate electrostatic discharge in the tool.