Integrated Drive-Control Unit Assembly With Corrosion-Shielded Guide Pin
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Solution Overview
Problem
Existing integrated units in electric vehicles and hybrid vehicles face issues with rust and corrosion on guide pins due to exposure, which are prone to water and saltwater ingress, compromising their integrity and functionality.
Innovation Solution
An integrated unit design that includes a protective wall covering at least a part of the guide pin, preventing water from adhering and thus reducing rust and corrosion, while maintaining structural integrity and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the guide pin is exposed to the outside for positioning and fastening, then the ease of manufacture and assembly is improved, but the reliability deteriorates due to rust and corrosion from water exposure
Solution Approach 1:
A protective wall structure is provided that covers the guide pin to prevent water and saltwater from reaching it. The protective wall acts as a barrier shield, creating a physical separation between the vulnerable guide pin and the external environment, thus preventing rust and corrosion while maintaining the guide pin's positioning function.
2Reliability
If the guide pin is covered to prevent rust, then the reliability is improved, but the ease of operation deteriorates due to reduced accessibility
Solution Approach 1:
The protective wall is designed to cover only the necessary portions of the guide pin that are susceptible to water exposure, while leaving other portions accessible. This localized protection approach maintains the guide pin's functionality and accessibility for assembly operations while providing sufficient protection against rust and corrosion in the critical areas.
Data Source
AI summary
An integrated unit, includes a drive device, and a control device which is fixed to the drive device and is configured to control the drive device. The control device includes a guide pin protruding toward the drive device. The drive device includes a guide hole through which the guide pin is inserted. The control device is fixed to the drive device with the guide pin inserted through the guide hole. The drive device includes a protective wall which covers at least a part of the guide pin with the control device fixed to the drive device.