Connector Vibration Isolation via Folded Wire Routing
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Solution Overview
Problem
Existing connectors mounted on vehicles experience vibrations that cause wires pulled out from the rear end to vibrate orthogonally, leading to wear on terminal fittings due to loose connections between the housing and the wiring-forcing member.
Innovation Solution
A connector design where wires are folded back towards the front end and a tightening member is secured to the housing's peripheral surface orthogonally, with a positioning portion regulating the tightening member's position, ensuring synchronized vibrations between the wires and housing, and a rubber boot with a flexible belt stabilizes the wires without damaging them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the housing and wiring-forcing member are coupled only through locks, then the structure is simple, but vibrations can loosen the wiring-forcing member and transmit vibration to terminal fittings causing wear
Solution Approach 1:
The wiring-forcing member is fixed to the housing before the wires are inserted, establishing a stable base structure that prevents vibration-induced loosening before the terminal fittings are subjected to vibrational stress
Solution Approach 2:
The wiring-forcing member acts as an intermediary element between the housing and the terminal fittings, absorbing and isolating vibrations so they are not transmitted to the terminal fittings, thereby preventing wear
2Ease of operation
If the tightening member is positioned without regulation, then the tightening operation is simple, but the wires may be damaged or the tightening may be ineffective
Solution Approach 1:
The positioning portion acts as an intermediary guide structure that directs the tightening member to the correct position, ensuring effective tightening while preventing the wires from being damaged by improper positioning
Solution Approach 2:
The positioning portion is pre-formed on the housing to guide the tightening member into the correct position before tightening occurs, eliminating the need for complex adjustment operations while protecting the wires
Data Source
AI summary
A rubber boot (30) is fit on a peripheral surface of a connector housing (10). Wires (90) pulled out of a rear surface of the housing (10) are folded back midway, and a folded region of the electric wires (90) is disposed along a peripheral surface of the boot (30). In this state, a tightening member (50) is tightened to the peripheral surface of the boot (30) to fix the wires (90) and the housing (10) together. A positioning portion (36) for regulating a longitudinal position of the tightening member (50) is provided on the peripheral surface of the boot (30). The phase of the wires (90) and the housing (10) become almost equal to each other when the connector is subjected to vibration. Therefore it is possible to prevent the terminal fittings (60) from vibrating inside the housing (10).