Ferrite Core Retention Clips for Vibration-Resistant Cable Assembly
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Solution Overview
Problem
Existing ferrite core holding solutions, such as resin casings and C-shaped clips, are dimensionally specific and prone to axial movement in high-vibration environments, leading to inventory management issues and instability.
Innovation Solution
A pair of retention clips with convex projections and tabs that engage concave grooves on the ferrite core, combined with cable ties for secure retention, allowing universal fit and resistance to longitudinal movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resin casings are used to hold ferrite core halves, then the ferrite core is securely retained on the cable, but the casing must be manufactured specifically to the shape and dimensions of the ferrite core, leading to inventory management problems
Solution Approach 1:
The retention clip is designed with a universal geometry that can accommodate different ferrite core shapes and dimensions. The clip features a C-shaped body with resilient arms that can flex to match various core profiles, and engagement features that work with multiple core configurations, eliminating the need for dimension-specific casings
2Adaptability or versatility
If C-shaped clips with resilient arms are used to hold ferrite core halves, then the clips can be generally shaped without dimensional specificity, but the assembly can move axially along the cable in high vibration environments
Solution Approach 1:
The retention clip incorporates pre-configured engagement features including tabs that extend beyond the ferrite core ends and cable grip elements positioned to engage the cable surface. These features are预先 arranged to prevent axial movement before vibration occurs, providing preliminary mechanical constraint against displacement
Solution Approach 2:
The retention clip adds axial retention capability by extending engagement features in the axial dimension beyond the ferrite core ends. The tabs protrude axially to engage the cable surface, converting a two-dimensional clamping action into a three-dimensional constraint that prevents movement in all directions including axial displacement
3Reliability
If adhesive is applied to secure the C-shaped clip to the ferrite core, then axial movement is prevented, but the solution becomes less reliable in high vibration environments and adds manufacturing complexity
Solution Approach 1:
The chemical bonding mechanism of adhesive is replaced with a purely mechanical retention system. The retention clip uses resilient arms, engagement tabs, and cable grip features that physically constrain the ferrite core and prevent axial movement through mechanical interference rather than chemical adhesion, eliminating adhesive application steps
Data Source
AI summary
An electric noise suppressor is provided for suppressing electric noise of at least one cable. The suppressor includes first and second ferrite members. Each of the ferrite members has an inner surface and an outer surface facing away from the inner surface, the first and second ferrite members being disposed so the inner surfaces face one another. The suppressor further includes first and second retention clips. Each of the retention clips has a side wall and opposed first and second pressing walls extending from spaced apart locations on the respective side wall. The retention clips are disposed so that the first pressing walls engage the outer surface of the first ferrite member and the second pressing walls engage the outer surface of the second ferrite member. The first and second pressing walls are configured to press the inner surfaces of the first and second ferrite members toward one another.