Throttle Valve Design for Electrostatic Discharge Testing
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Summary
Problems
Throttle valves with plastic housings pose challenges in testing the influence of electrostatic discharge from electric motors on electronic devices, as traditional electrostatic discharge guns cannot access the metal housing of the electric motor, and grounding issues prevent effective removal of electromagnetic interference.
Innovation solutions
A throttle valve design featuring a conductive insert with exposed components allows direct access for electrostatic discharge testing and grounding of the filter capacitor, enabling efficient testing and interference removal by connecting the electric motor connector to both the insert body and housing.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a plastic housing is used to reduce weight, then the weight of the throttle valve is reduced, but the electrostatic discharge gun cannot access the metal housing of the electric motor for testing
Why choose this principle:
A conductive insert is introduced as an intermediary element between the plastic housing and the electric motor. This insert provides a accessible testing surface that is electrically connected to the electric motor, allowing electrostatic discharge testing without requiring direct access to the motor housing. The insert acts as a mediator that bridges the gap between the non-conductive plastic housing and the need for electrical contact for testing.
Principle concept:
If a plastic housing is used to reduce weight, then the weight of the throttle valve is reduced, but the filter capacitor cannot be grounded to remove electromagnetic interference
Why choose this principle:
The conductive insert serves as a grounding intermediary, providing a path to ground the filter capacitor connected to the electric motor. Since the insert is electrically connected to the motor and can be grounded externally, it enables the filter capacitor to function properly by providing a reference ground, even though the plastic housing itself cannot be grounded.
Application Domain
Data Source
AI summary:
A throttle valve design featuring a conductive insert with exposed components allows direct access for electrostatic discharge testing and grounding of the filter capacitor, enabling efficient testing and interference removal by connecting the electric motor connector to both the insert body and housing.
Abstract
A throttle valve includes a housing, an electric motor and an insert. The electric motor is accommodated in the housing and drives opening and closing of an air flow passage of the throttle valve. The insert is partially enclosed in the housing and includes an electrically conductive insert body at least partially accessibly exposed from the housing, and an electrically conductive electric motor connector. One end of the motor connector is electrically connected to the insert body, and the other end thereof is electrically connected to the electrically conductive housing of the electric motor.