Cable Connector Pressing Means Impedance Control
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Solution Overview
Problem
High-frequency cable connectors in automotive applications face challenges in maintaining impedance consistency due to the removal of cable sheaths, leading to unwanted signal reflections and failure to meet transmission standards, especially when handling high data rates.
Innovation Solution
A cable connector arrangement with a pressing mechanism that deforms the insulation of individual lines to create a common contact surface, adjusting impedance and minimizing the untwisted area, ensuring a consistent impedance profile across the connector assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cable sheath is removed in the transition area to enable pitch change of individual conductors, then the conductors can be distributed to contact elements, but the signal path becomes more inductive causing impedance change and signal reflections
Solution Approach 1:
A pressing means is introduced as an intermediary element in the transition area to press individual conductors together, creating a capacitive effect that compensates for the inductive effect caused by sheath removal. This mediator enables both conductor distribution and impedance maintenance simultaneously.
Solution Approach 2:
The pressing means changes the physical parameters of the transition area by reducing the distance between conductors and creating capacitive coupling, thereby altering the electrical characteristics to maintain impedance consistency despite the structural changes in the transition area.
2Ease of manufacture
If individual conductors are spread from small spacing in the cable to larger spacing at contact elements, then connection is enabled, but the untwisted area increases causing impedance deviation
Solution Approach 1:
The pressing means acts as a mediator in the transition area, maintaining close spacing between conductors despite the pitch change required for connector assembly. This enables easy manufacturing while preserving impedance control through sustained capacitive coupling.
3Adaptability or versatility
If the cable sheath is removed to allow conductor routing, then pitch change is possible, but the signal path inductance increases leading to signal reflections
Solution Approach 1:
The pressing means serves as a protective intermediary that maintains capacitive coupling between conductors in the transition area, counteracting the harmful inductive effects and preventing signal reflections while allowing routing flexibility.
Solution Approach 2:
The pressing means converts the potentially harmful inductive effect of exposed conductors into a beneficial capacitive effect by forcing conductors into close proximity, thereby eliminating signal reflections and improving signal integrity.
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 maintains impedance consistency, reduces signal reflections, and meets automotive transmission standards by optimizing the impedance curve, particularly in the transition area, thereby enhancing EMC performance and data transmission reliability.
Implementation Method 1
at least one pressing means (13) is provided and designed in the middle section (6) to press at least the two individual conductors (9) together in such a way that their insulations (10) undergo a mechanical deformation in the area of a common contact surface (B)
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The invention relates to a cable connector arrangement (1) comprising a cable connector (3) and an electrical cable (2) with a plurality of individual conductors (9), each having insulation (10) and an electrical conductor (11), comprising a front section (7) configured for connection with a corresponding mating connector, a rear section (5) in which the individual conductors (9) are enclosed by a cable sheath (8), and an intermediate middle section (6). The electrical conductors (11) of two of the individual conductors (9) have a first nominal distance (D1) between them in the rear section (5) and a second distance (D2) between them in the front section (7), which is greater than the first distance (D1), wherein the distance between the electrical conductors (11) of the two individual conductors (9) increases in the middle section (6) towards the front section (7).According to the invention, at least one crimping means (13) is provided in the middle section (6) in order to crimp at least the two individual conductors (9) together in such a way that their insulations (10) undergo a mechanical deformation in the area of a common contact surface (B).