Coil Wire Routing for Work Vehicle Door Stress
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Solution Overview
Problem
Existing wire routing systems in work vehicles face interference and stress issues when movable components, such as doors, move between open and closed positions, due to the limited design that restricts the extension and retraction of electrical wires, leading to potential damage and functionality limitations.
Innovation Solution
A wire routing system featuring a tubular support member and a coil wire with a coiled portion that transitions from a retracted to an extended position as the door moves, supported by a strain relief device, ensuring the wire is protected and can efficiently connect electrical components without pinching or bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed wire routing system is used in the door, then the structure is simple and cost-effective, but the wire cannot accommodate door movement without stress and potential damage
Solution Approach 1:
The wire routing system transitions from a fixed structure to a dynamic one by incorporating a coil wire that can extend and retract. The coil wire is configured to pay out when the door opens and retract when the door closes, allowing the system to adapt to door movement while maintaining structural simplicity and cost-effectiveness.
2Ease of operation
If the wire extends freely with door movement, then the wire can accommodate motion, but the wire becomes pinched or bent causing damage
Solution Approach 1:
A guide structure is introduced as an intermediary element between the coil wire and the door movement. The guide structure includes a guide surface that directs the coil wire during extension and retraction, preventing the wire from being pinched or bent. This mediator ensures smooth wire movement while protecting it from damage.
Solution Approach 2:
The system uses a flexible coil wire instead of a rigid wire, allowing it to bend and extend without damage. The coil configuration enables the wire to flex repeatedly during door operation while maintaining electrical connectivity and preventing stress-induced failure.
3Reliability
If a protective conduit is used for the wire, then the wire is protected from damage, but the system complexity and cost increase
Solution Approach 1:
Instead of using a rigid protective conduit that would increase system complexity, the patent employs a flexible coil wire with a coil protection member. This protective element flexes with the wire during extension and retraction, providing necessary protection while maintaining system simplicity and avoiding the need for complex rigid conduit systems.
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 solution provides a compact, efficient, and cost-effective wire routing system that reduces stress on wires and prevents damage as the door moves, enabling the use of various electrical components within the door while maintaining functionality and safety.
Implementation Method 1
a coil wire configured to conduct current from a power supply within the work vehicle to an electrical component supported by the door. A coiled portion of the coil wire is configured to be disposed within the tubular support member and to transition from a retracted position when the door is in a closed position to an extended position when the door is in an open position
Data Source
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AI summary
A wire routing system for use in a work vehicle includes a hollow member coupled to a door of the work vehicle and a coil wire configured to conduct current from a power supply within the work vehicle to an electrical component supported by the door. A coiled portion of the coil wire is configured to be disposed within the hollow member and to transition from a retracted position when the door is in a closed position to an extended position when the door is in an open position.