Plug Housing Hook Structure for Grip and Conveyance Stability
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Solution Overview
Problem
Existing plug housings face challenges in being easily pulled out from receptacle connectors due to small exposed surfaces, leading to slippage and instability during manual handling, especially when miniaturized, and they tend to tilt during conveyance by parts feeders, affecting posture and assembly precision.
Innovation Solution
The design incorporates a hook part on the exposed surfaces of the plug housing for easier gripping and a contact part to stabilize adjacent plug housings, preventing tilting during conveyance, while maintaining the ability to be easily pulled out from receptacle connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the exposed surfaces of the plug housing are made flat for miniaturization, then the size is reduced, but the gripping stability deteriorates causing hand slippage
Solution Approach 1:
The patent applies curvature by forming protrusions (hook parts) on the exposed surfaces of the plug housing. These protrusions create curved or non-flat contact points that hook onto fingers, providing mechanical interlocking that prevents slippage. This resolves the contradiction by maintaining miniaturization while improving gripping stability through geometric curvature rather than flat surfaces.
2Ease of operation
If hook parts are added to improve pulling-out ease, then gripping stability improves, but posture stability during conveyance deteriorates due to tilting
Solution Approach 1:
The patent segments the exposed surface into multiple functional elements: hook parts for gripping and flat parts for stability. The flat parts serve as contact surfaces with parts feeders, providing stable conveyance, while the hook parts protrude to enable easy pulling out. This segmentation resolves the contradiction by assigning different functions to different segments of the same surface.
Solution Approach 2:
The patent applies local quality by giving different geometric properties to different regions of the exposed surface. Some regions have protruding hook parts with curved surfaces optimized for finger gripping, while other regions have flat surfaces optimized for stable contact with conveyance equipment. This local differentiation allows simultaneous optimization of both pulling-out ease and posture stability.
3Volume of moving object
If the exposed surfaces are minimized for miniaturization, then compactness improves, but manual handling stability deteriorates
Solution Approach 1:
The patent resolves the contradiction by transitioning from two-dimensional flat surfaces to three-dimensional protruding structures. The hook parts extend in the vertical dimension from the exposed surface, creating depth and volume efficiency. This allows the plug housing to maintain compact footprint while providing substantial gripping features that improve handling stability without increasing overall volume significantly.
Data Source
AI summary
A housing main body of a plug housing includes an inserted part inserted in a receptacle housing and an exposed part exposed outside the receptacle housing, in a state where the plug housing is fitted to the receptacle housing. The exposed part includes a hook part formed at an end of the exposed part in an intersecting axis intersecting with an insertion direction of inserting the inserted part in the receptacle housing, the hook part being configured to hook a finger thereon, and a contact part contactable with another plug housing between the hook part and the inserted part when the other plug housing is disposed adjacent to the plug housing in the intersecting axis.