Wire Harness Connection Ventilation for Heat Dissipation
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Solution Overview
Problem
The increasing current and heat generated by wires within protective tubes in wire harnesses pose a challenge for effective heat dissipation, leading to potential temperature increases and reduced efficiency.
Innovation Solution
A wire harness design featuring a connection with a larger cross-sectional area than the core wires, combined with a ventilation system allowing gas passage and restricting liquid passage, facilitates improved heat dissipation by transmitting heat from surrounding regions to the connection area and releasing it externally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the protective tube seals the wire between connectors, then water and dust protection is improved, but heat dissipation deteriorates due to trapped heat inside the tube
Solution Approach 1:
The patent applies a porous air-permeable film as the water-proofing cover material. This film allows air to pass through for heat dissipation while its pore structure prevents water and dust from entering the protective tube, thus resolving the contradiction between sealing for protection and ventilation for heat dissipation
Solution Approach 2:
The patent introduces a ventilation portion with different properties from the main protective tube body. This local ventilation section allows selective gas permeability while the rest of the tube maintains water and dust tightness, enabling heat dissipation at specific locations without compromising overall protection
2Temperature
If the connection has a larger cross-sectional area than core wires, then heat generation per unit area is reduced, but device complexity increases
Solution Approach 1:
The patent merges the connection structure with the ventilation system by positioning the ventilation portion to surround the connection. This integration allows the connection to serve dual purposes: electrical connection with inherent heat dissipation capability through its larger cross-section, and focal point for ventilation-driven heat removal
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 configuration reduces heat accumulation near the connection, enhances heat dissipation, and maintains lower temperatures, thereby improving the overall heat dissipation of the wire harness.
Implementation Method 1
the covering is provided with a ventilation having a property of allowing a passage of gas and restricting a passage of liquid
Implementation Method 2
heat is readily transmitted from the wire in a surrounding region of the connection to the connection
Implementation Method 3
air that has been warmed near the connection by heat generated at the connection itself, heat transmitted from the wire in a section other than the connection, or the like, can be released to the outside of the covering ventilation through the ventilation
Data Source
AI summary
A wire harness that includes a wire having a first wire, a second wire that is more bendable than the first wire, and a connection for electrically connecting the first wire and the second wire to each other; a tube for accommodating at least one of the first wire and the second wire; and a covering ventilation that is tubular, has a covering for surrounding the connection and a surrounding region of the connection of the wire, and is connected to the tube.