Shield Connector Housing Lock Gap Elimination
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Solution Overview
Problem
Shield connectors require a gap on the housing surface for fixing the shield shell, which increases the connector's size.
Innovation Solution
A shield connector design that includes a housing with an electric wire extraction part and a housing-side lock part, a shield shell on the outer circumference, and a protector with a protector-side lock part that engages with the housing-side lock part, sandwiching the shield shell between the housing and the protector to fix it without needing a gap on the housing surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gap is formed on the housing surface for fixing the shield shell, then the shield shell can be securely fixed to the housing, but the overall size of the shield connector increases
Solution Approach 1:
The invention transitions from a two-dimensional fixation approach (gap on housing surface) to a three-dimensional engagement system where the protector and lock parts create fixation in multiple spatial dimensions, eliminating the need for surface gap while maintaining secure attachment
Solution Approach 2:
The protector is nested between the housing and shield shell, with lock parts nested within the engagement structure. This nested arrangement allows fixation without requiring external gap space, as the fixation mechanism is contained within the existing component boundaries
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for downsizing the shield connector by eliminating the need for a gap on the housing surface for fixing the shield shell, while ensuring secure fixation through engagement of the lock parts.
Implementation Method 1
A lock arm 105 having elasticity is formed on a surface 104 at an electric wire extraction side (right side in FIG. 2) of the housing 102 to project in an electric wire extraction direction.
Implementation Method 2
Each of the pair of protector-side lock parts may include: an arm flexibly deformable in a direction orthogonal to the electric wire extraction direction; and a locking claw part provided at a tip end of the arm. The arms may be flexibly deformed in opposite directions to allow the locking claw parts to be engaged with the locked parts
Data Source
AI summary
A housing-side lock part provided on a surface of a housing where an electric wire extraction part is formed and a protector-side lock part of a protector covering an outer circumference of the electric wire extraction part of the housing are engaged with each other and fix a shield shell to the housing through the protector, with a portion of the shield shell in contact with the surface of the housing where the electric wire extraction part is formed being sandwiched between the housing and the protector.