Vehicle Connector Wire Fixing for Vibration Suppression
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Solution Overview
Problem
Connectors mounted on vehicle wiring harnesses experience vibration-induced shaking of terminal fittings, leading to sliding abrasion and reduced connection reliability due to unavoidable clearance between terminal fittings and housing, which affects reliability and longevity.
Innovation Solution
A connector design featuring a bracket with a wire fixing portion that secures the wire at an angle perpendicular to the vibration direction, suppressing vibration transmission and sliding movements, while a cover protects the wire draw-out part and integrates with the bracket for cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the terminal fitting is accommodated in the housing with clearance, then the terminal fitting can be easily assembled, but the terminal fitting shakes in the cavity due to vibration
Solution Approach 1:
A wire fixing portion is introduced as an intermediary component between the wire and the housing. This fixing portion secures the wire in a specific position, which in turn stabilizes the terminal fitting accommodated in the housing, preventing shaking while maintaining assembly ease
2Reliability
If the wire is fixed perpendicular to the vibration direction, then vibration transmission is suppressed, but the wire fixing structure becomes more complex
Solution Approach 1:
The wire fixing portion is designed to serve multiple functions: it fixes the wire in position, suppresses vibration transmission by orienting perpendicular to the vibration direction, and simultaneously provides structural support for the terminal fitting. This multi-functionality reduces the need for additional components
3Adaptability or versatility
If separate components are used for bracket and cover, then manufacturing flexibility is improved, but manufacturing cost and assembly steps increase
Solution Approach 1:
The bracket and cover are merged into a single integrated component. This integration reduces the total number of parts, simplifies assembly operations, and lowers manufacturing costs while maintaining the functional benefits of both the bracket's vibration suppression and the cover's protection
Data Source
AI summary
A connector (10) to be mounted on ends of wires (W1) to be installed in a vehicle includes female terminals (20) that are to be connected to the ends of the wires, a housing (30) in which the female terminals (20) are accommodated and from which the wires (W1) are drawn out, and a shield bracket (40) that fixes the housing (30) to a case of a device installed in the vehicle. The shield bracket (40) includes a wire fixing portion (54) between a wire draw-out part (P1) where the wires (W1) are drawn out from the housing (30) and a vibrating part (P2). The wire fixing portion (54) fixes the wires (W1) extending in a direction intersecting an extending direction of the wires (W1) in the vibrating part (P2) where the wires (W1) vibrate as the vehicle vibrates.