Right-Angle Connector Housing Latch Geometry Against Cable Pull Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing right-angle connectors are prone to separation from the housing due to excessive turning and lifting when the power cable is pulled, leading to potential detachment of the fixing portion from the plug housing.
Innovation Solution
The housing and connector design incorporates an engagement groove and engagement piece with inclined surfaces, along with a latching hole and latching claw, to restrict excessive turning and enhance the secure attachment of the cover portion to the housing portion, reducing the likelihood of separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cover portion is attached to the housing portion using a simple engagement structure, then the device complexity is reduced and ease of manufacture is improved, but the reliability deteriorates due to excessive turning and lifting causing separation
Solution Approach 1:
The engagement groove and engagement piece incorporate inclined surfaces (curved/angled geometry) rather than simple flat surfaces. The inclined surface allows the engagement piece to slide smoothly into the engagement groove during attachment, while the lower portion contact provides mechanical interlocking that prevents excessive turning and lifting, thus maintaining reliability without excessive complexity
Solution Approach 2:
The attachment structure extends into multiple dimensions by incorporating both the engagement groove (recessed in one component) and engagement piece (protruding from another component), with inclined surfaces that engage at specific orientations. This multi-dimensional engagement prevents separation in multiple directions (turning and lifting) while maintaining a relatively simple overall structure
2Reliability
If the engagement groove and engagement piece are designed with inclined surfaces and latching features, then the reliability is improved by preventing separation, but the device complexity increases
Solution Approach 1:
The attachment structure is segmented into distinct functional elements: the engagement groove (with inclined surface and lower portion contact area), the engagement piece (with corresponding inclined surface), and the latching hole with latching claw. This segmentation allows each element to perform its specific function (guiding, securing, and locking) independently, achieving high reliability through coordinated simple components rather than a single complex structure
3Stability of the object's composition
If the lower portions of the inclined surfaces contact each other to restrict turning, then the stability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The inclined surfaces are designed with specific geometric parameters (inclination angles, contact surface areas, and positioning dimensions) that are optimized to provide stable engagement. By carefully selecting these parameters, the structure achieves inherent stability through the geometry itself rather than requiring extremely tight manufacturing tolerances, as the inclined surfaces naturally guide the components into proper alignment during assembly
Data Source
AI summary
Provided is a housing which includes: a housing portion; a cover portion; and an attachment structure, the attachment structure has an engagement groove provided in the housing portion and an engagement piece provided in the cover portion, the engagement groove has a first and a second inner end surface, the second inner end surface is positioned on a back side of the engagement groove, the engagement piece has a first and a second outer end surface, the second outer end surface is positioned on a back side of the engagement piece, the second inner end surface and the second outer end surface are an inner inclined surface inclined backward from up to down, and a lower portion of the inner inclined surface of the second inner end surface and a lower portion of the outer inclined surface of the second outer end surface contact each other.