Cable Connector Cap Structure for Easy Mold Release

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Solution Overview

Problem

The manufacturing process of connectors with inwardly concave structures in the cap is complex due to mold release issues, leading to increased production costs and quality challenges.

Innovation Solution

A connector design with staggered opening slots and a retaining hook that avoids undercuts during mold opening, allowing for easier manufacturing through injection molding and improved structural bonding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the cap includes inwardly concave structures (undercuts) for cable accommodation and hooking functions, then the connector achieves functional requirements for cable retention and connection, but the mold release becomes difficult requiring auxiliary sliders and complex manufacturing processes

Engineering Contradiction:
Improvecable retention and connection reliabilityVSAvoidmold release ease
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent inverts the traditional undercut design by making the opening slots outwardly convex rather than inwardly concave. This allows the mold to easily release from the cap without requiring complex slider mechanisms, while still achieving the necessary cable retention and hooking functions through the protruding slot structures

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The patent divides the single opening slot into multiple segmented slots (first opening slot and second opening slot) that are staggered in the first direction. This segmentation allows each slot to be independently formed with simpler mold geometry, eliminating the need for complex undercut structures while maintaining cable retention functionality

Inventive Principle:
Principle #1Segmentation

2Device complexity

If the cap has a single nearly circular opening slot with hooking portion, then the structure is simple, but the manufacturing process becomes complex due to undercuts preventing mold release

Engineering Contradiction:
Improvecap structure complexityVSAvoidmanufacturing efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent segments the opening slot structure into multiple slots (first opening slot and second opening slot) that are staggered in the first direction. This segmentation simplifies the mold release process by eliminating undercuts, thereby improving manufacturing efficiency and productivity despite adding some structural elements

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent arranges the first and second opening slots to be staggered in the first direction rather than concentric or linearly arranged. This dimensional arrangement allows the slots to interlock and provide retention while maintaining outwardly convex profiles that facilitate easy mold release

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Reliability

If the opening slot has inwardly concave structure, then the cable can be retained within the cap, but the forming quality becomes difficult to ensure due to complex molding requirements

Engineering Contradiction:
Improvecable retentionVSAvoidforming quality
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent inverts the concave structure to an outwardly convex opening slot design. This allows the slot to retain cables through its protruding geometry while being easily formable through standard injection molding processes, ensuring consistent forming quality without complex mold mechanisms

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The patent changes the geometric parameters of the opening slots from inwardly concave to outwardly convex profiles. This parameter change fundamentally simplifies the molding process while maintaining the essential cable retention function through the staggered slot arrangement

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250253577A1Connector and Cap
Publication Date: 2025.08.07 TE CONNECTIVITY ITAL DISTRIBUTION SRL
  • US20250253577A1 patent drawing
  • US20250253577A1 patent drawing
  • US20250253577A1 patent drawing

AI summary

A connector includes a cap having a first main body that includes a first opening slot and a second opening slot staggered in a first direction. The first opening slot has a first concave portion and the second opening slot has a second concave portion. The first concave portion and the second concave portion are arranged opposite to each other in a second direction. The first opening slot and the second opening slot are used together to accommodate a cable. An extension direction of the cable within the cap is the first direction; the second direction is perpendicular to the first direction. The connector includes a terminal piercing the cable to form an electrical connection with the cable and a housing accommodating the terminal.