Shielded Flat Cable Connector with Metal Hold-Down Member
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Solution Overview
Problem
Conventional electrical connectors fail to effectively shield against external electromagnetic interference when a circuit flat cable is inserted and connected, leading to signal noise degradation.
Innovation Solution
A shielded insertion and connection structure for a flat cable connector featuring a metal hold-down member and a metal receiving housing with conductive sections connected to grounding terminals, allowing for the drainage of electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a non-metallic hold-down member is used in a conventional connector, then the connector can provide insulation and basic holding function, but it cannot conduct electromagnetic interference to grounding terminals, resulting in poor shielding performance
Solution Approach 1:
The hold-down member is constructed as a composite structure with a non-conductive base material and a conductive coating layer applied on its surface. This composite material approach allows the hold-down member to simultaneously provide mechanical holding function through the base material and electromagnetic shielding through the conductive coating, resolving the contradiction between shielding performance and material complexity
Solution Approach 2:
The electrical conductivity parameter of the hold-down member is changed by applying a conductive coating layer. This parameter change transforms the hold-down member from a purely insulating component to one with controlled conductivity, enabling it to conduct electromagnetic interference to grounding terminals while maintaining its mechanical holding function
2Object-affected harmful factors
If a metal hold-down member is used to provide shielding, then electromagnetic interference can be conducted to grounding terminals, but it may cause excessive insertion force and potential mechanical damage to the flat cable
Solution Approach 1:
The composite structure of non-conductive base material with conductive coating allows the hold-down member to provide shielding through the conductive layer while the base material maintains appropriate mechanical compliance, reducing insertion force and preventing damage to the flat cable
Solution Approach 2:
The conductive coating is applied locally on the surface of the hold-down member where electromagnetic shielding is needed, while the bulk material remains non-conductive and mechanically compliant. This local quality differentiation allows shielding function without the excessive force problems of fully metal construction
3Object-affected harmful factors
If a conventional connector structure is used, then the connector can provide basic electrical connection, but it cannot effectively shield signals from electromagnetic interference during transmission
Solution Approach 1:
The shielding function is merged with the existing hold-down member component by adding a conductive coating layer. This integration approach allows the hold-down member to simultaneously perform mechanical holding and electromagnetic shielding functions, improving signal protection without significantly increasing overall connector structure complexity
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
The solution effectively shields against external electromagnetic interference, improving signal quality by grounding the hold-down member and conductive sections, and securely clamps the circuit flat cable to prevent mechanical damage and excessive insertion force.
Implementation Method 1
The hold-down member is made of metal and the receiving housing is at least partly made of metal to form a conduction section, which is connected to at least one grounding terminal... external electromagnetic interference can be drained to a circuit board through grounding terminals of the connector
Data Source
AI summary
A shielded insertion and connection structure for a flat cable connector includes a receiving housing and a hold-down member. The receiving housing forms a receiving compartment and two side walls formed at opposite ends of the receiving compartment. The hold-down member has opposite ends that respectively form pivot structures for pivotal coupling to the side walls and rotation between an open position and a holding position. The hold-down member is made of metal and the receiving housing is at least partly made of metal to form a conduction section, which is connected to a grounding terminal. When the hold-down member is at the open position and a circuit flat cable is inserted into the receiving compartment, the hold-down member is operated to depress and hold the circuit flat cable and the hold-down member is put in electrical connection with the grounding terminal through the conduction section.