Connector Wire Cover Catching Portion Distortion Correction
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Solution Overview
Problem
Resin electric wire covers can become distorted during molding, leading to reduced dimensional accuracy and lower workability when assembled with connector housings, potentially causing assembly difficulties and wire biting issues.
Innovation Solution
The connector design features a locking rib on the electric wire leading portion and a catching portion on the electric wire cover with a sliding face inclined outward, allowing the cover to be displaced outward during assembly, preventing locking protrusion interference and correcting distortion, thus ensuring smooth mounting and reducing wire biting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electric wire cover made of resin is used, then the electric wires can be protected and guided, but the cover may be distorted during molding, reducing dimensional accuracy and assembly workability
Solution Approach 1:
The patent applies preliminary action by providing a catching portion that protrudes in the mounting direction before assembly occurs. This catching portion with its inclined sliding face prepares the assembly interface in advance, allowing the distorted electric wire cover to be guided and corrected during the assembly process itself, rather than requiring pre-assembly adjustments or rework
2Ease of manufacture
If the electric wire cover is distorted, then molding is complete, but the workability of assembling the cover with the connector housing becomes low
Solution Approach 1:
The patent applies parameter changes by designing the catching portion with an inclined sliding face that changes the geometric parameters of the assembly interface. This inclined face allows for gradual displacement and correction of dimensional deviations during assembly, transforming a rigid fit problem into a progressive alignment process that accommodates molding distortions
3Reliability
If the locking protrusion is locked with the locking rib, then the cover is secured, but distortion may cause the locking protrusion to bump against the housing, preventing smooth assembly
Solution Approach 1:
The patent applies the intermediary principle by introducing the catching portion with its inclined sliding face as a mediator between the locking protrusion and the locking rib. This catching portion acts as an intermediate element that absorbs and corrects dimensional deviations through its inclined surface, allowing the locking protrusion to smoothly engage with the locking rib without bumping or interference caused by cover distortion
Data Source
AI summary
A connector includes a housing and an electric wire cover assembled with the housing. The housing includes a terminal housing portion and an electric wire leading portion. A locking rib protruding outward is formed on the electric wire leading portion. An assembling portion is formed on an end part of the electric wire cover facing to the housing. The assembling portion includes a locking protrusion and a catching portion protruding more than the locking protrusion in a mounting direction of mounting the electric wire cover on the housing. The catching portion includes a sliding face inclined with respect to the mounting direction. When the electric wire cover is mounted on the housing, the sliding face makes contact with the electric wire leading portion, thereby the assembling portion is displaced outward.