Reinforced Electrical Wire with Embedded Serving for String Lamp Safety
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Solution Overview
Problem
String lamps face safety hazards and operational failures due to conductive terminals being pulled out from the connecting base under lateral tension, which does not meet safety regulations and reduces service life.
Innovation Solution
A reinforced electrical wire with a metal lead wire and a serving enclosing it, featuring a reinforcing device such as a plastic strip embedded within and exposed, providing enhanced tensile strength and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a false line is added to bear tensile force, then the conductive terminals are protected from being pulled out, but the device complexity increases
Solution Approach 1:
The patent combines the reinforcing function and the conductive function into a single integrated wire structure. The serving layer is constructed with load-bearing elements (such as aramid fibers or steel wires) that are intertwined with or adjacent to the conductive core, eliminating the need for a separate false line while maintaining both mechanical strength and electrical conductivity.
Solution Approach 2:
The electrical wire employs composite material construction where the serving layer integrates high-strength materials (aramid fibers, steel wires) with the conductive core (copper or aluminum). This composite structure provides both the necessary tensile strength to prevent terminal pull-out and the electrical conductivity required for circuit operation, resolving the contradiction between reliability and device complexity.
2Stability of the object's composition
If the lead wire segment is tightly stranded with the false line, then the conductive terminals remain stable, but the manufacturing precision requirements increase
Solution Approach 1:
The load-bearing elements are pre-positioned and integrated into the serving layer structure during the wire manufacturing process, before the wire is installed and subjected to tension. This preliminary integration ensures that when tension is applied, the reinforcing elements are already in place to immediately bear the load and prevent terminal displacement, reducing the need for precise post-installation adjustments.
Solution Approach 2:
The patent changes the physical parameters of the wire construction by incorporating high-modulus materials (aramid fibers with tensile strength 3-5 times that of steel, or stainless steel wires) into the serving layer. These material parameter changes provide inherent structural stability that maintains conductive terminal positions without requiring extremely tight stranding, thereby reducing manufacturing precision requirements while improving stability.
3Reliability
If copper sheets are obliquely embedded into the connecting base, then electrical connection is achieved, but the conductive terminals may be pulled out under tension
Solution Approach 1:
The serving layer uses composite materials (aramid fibers, steel wires, or stainless steel wires) with tensile strengths 3-5 times greater than copper, to provide mechanical reinforcement without compromising electrical conductivity. This composite construction allows the wire to resist tensile forces that would otherwise pull obliquely embedded copper sheets out of the connecting base, while maintaining reliable electrical connection.
Solution Approach 2:
The patent employs spiral or twisted configurations in the serving layer construction, where the load-bearing elements are arranged in helical patterns around the conductive core. This curved/spiral arrangement distributes tensile stresses more evenly along the wire length and provides mechanical reinforcement that prevents terminal pull-out while allowing the oblique embedding of conductive terminals to maintain electrical connection.
Data Source
AI summary
The present invention provides a reinforced electrical wire including a metal lead wire, a serving enclosing the periphery of the metal lead wire, and a reinforcing device. The reinforcing device is embedded in the serving, a part of the reinforcing device is located in the serving, and the other part of the reinforcing device is exposed at the outside of the serving.