Shield Connector Resilient Piece Deformation Prevention
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Solution Overview
Problem
Conventional shield connectors deform excessively when terminal fittings with shield cables are inserted off-center or obliquely, leading to plastic deformation of resilient pieces.
Innovation Solution
The shield connector design includes resilient pieces with projecting touching portions that contact restricting portions within the connector housing, preventing excessive deformation by ensuring proper alignment during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the resilient piece is designed to resiliently sandwich the connection portion of the shield cable, then reliable electrical connection is achieved, but the resilient piece becomes susceptible to excessive deformation and plastic deformation when terminal fittings are inserted off-center or obliquely
Solution Approach 1:
The resilient piece is divided into functionally distinct segments: a contact portion for electrical connection and a touching portion for mechanical guidance. This segmentation allows each portion to be optimized for its specific function while working together as an integrated component.
Solution Approach 2:
The touching portion acts as an intermediary element between the terminal fitting and the connection portion. It mediates the interaction by providing early contact and guidance during insertion, preventing harmful forces from reaching the connection portion.
2Reliability
If the resilient piece extends backward from the shield shell to contact the connection portion, then electrical conductivity is ensured, but the resilient piece is vulnerable to plastic deformation during misaligned insertion
Solution Approach 1:
The touching portion makes preliminary contact with the terminal fitting before the connection portion engages with the shield cable. This preliminary action establishes proper alignment and guides the insertion process, preventing misalignment damage.
Solution Approach 2:
The touching portion provides preliminary anti-action by opposing and distributing insertion forces before they can reach the connection portion. This prevents excessive deformation during off-center or oblique insertion.
3Strength
If the resilient piece is made more robust to prevent deformation, then deformation resistance improves, but the ease of manufacture and assembly complexity increases
Solution Approach 1:
The touching portion and contact portion are merged into a single integrated resilient piece that can be formed in one manufacturing process. This combining maintains structural simplicity while achieving multiple functions through clever geometric design.
Solution Approach 2:
The resilient piece utilizes parameter changes in its geometry, particularly varying thickness and flexibility characteristics along its length. The touching portion can be designed with different dimensional parameters to optimize its guidance function while maintaining manufacturability.
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 design effectively prevents plastic deformation of resilient pieces, ensuring reliable electrical conductivity and secure connection of shield cables to the shield shell, even when terminal fittings are inserted incorrectly.
Implementation Method 1
a pair of resilient pieces for resiliently sandwiching a connection portion provided at an end portion of a shield braided wire of a shield cable are formed at an end portion of the shield shell
Data Source
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AI summary
An object of the present invention is to provide a shield connector capable of preventing plastic deformation of a resilient piece. A shield connector is provided with terminal fittings 10 having shield cables 11 connected thereto, a connector housing 20, into which the terminal fittings 10 are to be mounted, a shield shell 40 to be accommodated into the connector housing 20, and resilient pieces 45 each including a contact portion 47 which is provided on the shield shell 40 and comes into contact with a connection portion 19B of the shield cable 11. Each resilient piece 45 includes projecting pieces 49 for preventing the resilient piece 45 from being excessively deformed by coming into contact with restricting portions 38 provided in the connector housing 20.