Vehicle ECU Snap-Fit Connector Housing for Anti-Theft Locking
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Solution Overview
Problem
Conventional electronic control units for vehicles face challenges in preventing theft due to complex structures and high manufacturing costs, as well as difficulties in securely fixing the housing and connectors to prevent separation by intruders.
Innovation Solution
A snap-fit coupling structure is implemented using a fixing member with a clasp and fixing protrusions that securely couple the base and cover portions of the electronic control unit, preventing separation of the housing and connectors without the need for complex anti-theft brackets or high torque shear bolts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-theft brackets and shear bolts are used to prevent vehicle theft, then anti-theft performance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The fixing member is divided into multiple functional segments: a clasp portion for engaging the connector, a frame portion for structural support, and fixing protrusions for anchoring to the base portion. This segmentation allows each part to perform its specific function efficiently while keeping the overall structure relatively simple.
Solution Approach 2:
The fixing member is inserted through a slit in the cover portion and nested within the housing structure, with the clasp portion engaging the connector and the fixing protrusions anchoring to the base portion. This nesting approach integrates the fixing mechanism within the existing housing rather than adding external components.
2Reliability
If anti-theft brackets and shear bolts are used to prevent vehicle theft, then anti-theft performance is improved, but manufacturing cost increases
Solution Approach 1:
The fixing member combines multiple functions into a single integrated component: it secures the connector, attaches the cover portion to the base portion, and provides anti-theft protection. This merging eliminates the need for separate anti-theft brackets and multiple shear bolts, reducing part count and manufacturing cost.
Solution Approach 2:
The fixing member serves multiple purposes simultaneously: it acts as a connector retainer, a structural fastener between cover and base, and an anti-theft device. This multi-functionality replaces several specialized components with a single versatile element.
3Reliability
If shear bolts are tightened with high torque to prevent disassembly, then anti-theft performance is improved, but the bolts may break and become不可释放
Solution Approach 1:
The fixing protrusions are designed with elastic deformation capability, allowing them to flex during insertion and tightening, then maintain a secure locked position. This dynamic behavior provides strong holding force without requiring excessive tightening torque that would cause brittle failure.
Solution Approach 2:
The fixing mechanism uses elastic deformation as the key parameter change, transitioning from a flexible insertion state to a locked holding state. This allows the fixing member to achieve high security without the brittle failure mode associated with high-torque mechanical fasteners.
Data Source
AI summary
An electronic control unit for a vehicle includes a base portion of which an upper portion is open, a cover portion covering the upper portion of the base portion and on which a matching connector electrically connected to an electronic element is seated, and a fixing member passing between the base portion and the cover portion and vertically fixedly coupling the matching connector, the cover portion, and the base portion.