Electrical Connection Device with Adjustable Spring Force
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Solution Overview
Problem
Existing electrical connection devices struggle to provide reliable and universal electrical contact for cables with varying thicknesses and are prone to mechanical failure due to limited mechanical tolerance and vibration, especially when connecting multi-core cables.
Innovation Solution
An electrical connection device with cutting contact elements and springs that allow for adjustable compressive force, using a common pressure plate to tension the springs and a stamp with a protruding pin to ensure consistent cutting depth and secure contact, accommodating cables with different conductor cross-sections and preventing conductor severance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cutting contacts are designed for a specific cable thickness, then cutting depth can be controlled, but the device cannot accommodate cables with varying thicknesses
Solution Approach 1:
The cutting contact elements are made resilient instead of fixed, allowing them to dynamically adapt to different cable thicknesses while maintaining controlled cutting depth through the resilient mechanism's inherent properties
Solution Approach 2:
The invention changes the mechanical parameter of the cutting contact from rigid to resilient, enabling the contact element to deform and adapt to varying cable dimensions while maintaining effective electrical contact
2Reliability
If fixed cutting blades are used, then结构简单性 is improved, but reliability under vibration is worsened
Solution Approach 1:
The cutting contact elements are designed as resilient components that can dynamically respond to vibrations and mechanical stresses, maintaining reliable electrical contact by elastically deforming rather than fracturing under load
3Adaptability or versatility
If cutting contacts are made for small currents, then device complexity is reduced, but adaptability to different current requirements is worsened
Solution Approach 1:
The bus contact terminal is designed to handle multiple current ratings (6 A, 10 A, 16 A, 20 A) within a single device structure, making the contact system universal across different electrical load requirements without needing multiple specialized terminals
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
Ensures reliable, vibration-resistant, and quick tool-free installation for cables with varying cross-sections, allowing for secure contact without cutting through the conductor, and visual indication of the contact state, while compensating for mechanical tolerances and preventing unintentional relaxation.
Implementation Method 1
a spring with which a compressive force can be exerted on the respective cutting contact element
Implementation Method 2
the stamp has a stamping pin with a stamping contact pf is connected, which protrudes through the pressure plate to different extents depending on the tensioning state of the spring
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The device has multiple blade contact elements (1) electrically connected with an isolated non-cutting lead (7) after cutting insulation of the lead. A spring (3) is provided for the cutting insulation and electrical connection with the lead. Compressive force is exerted on the blade contact elements. A counter-pressure element (11) is fixed on the spring, and the compressive force is varied over a position of the counter-pressure element. The compressive force is exerted from the spring on the contact elements. The spring is clamped by a clamping device.