Wire Harness Clamp Protrusion for Liquid Drainage and Corrosion Control
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Solution Overview
Problem
Wire harness clamps without liquid discharge structures can lead to accumulation of liquids, causing corrosion of metal tubular members over time due to prolonged exposure.
Innovation Solution
The wire harness incorporates a clamp design with protruding portions and through holes that allow for the continuous decrease in inner circumferential surface height, facilitating liquid discharge and ventilation, and includes U-shaped through holes as stabilizer and discharge holes to enhance liquid removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamp without liquid discharge structure is used to hold a tubular member, then the clamp structure is simple, but liquid accumulates in the clamp causing corrosion of the metal tubular member
Solution Approach 1:
The inner circumferential surface of the protrusion is designed with a specific height gradient (decreasing from first end to second end) to create a local quality difference. This gradient structure directs liquid flow toward the discharge hole while maintaining the overall simplicity of the clamp body, thus preventing corrosion without significantly increasing complexity
Solution Approach 2:
A discharge hole is extracted from the clamp structure to enable liquid removal. The hole is positioned at the lowest point of the protrusion where liquid naturally accumulates due to the height gradient, allowing effective drainage while adding minimal structural complexity
2Ease of operation
If the inner circumferential surface height continuously decreases from first end to second end, then liquid discharge is promoted, but the clamp structure becomes more complex
Solution Approach 1:
The height gradient is applied only to the inner circumferential surface of the protrusion, not the entire clamp structure. This localized quality change promotes liquid discharge while keeping the rest of the clamp structure simple and easy to manufacture
Solution Approach 2:
The solution addresses liquid discharge by modifying the vertical dimension (height) of the inner circumferential surface rather than adding complex horizontal features. The continuous decrease in height from first end to second end creates a natural drainage path using gravitational force
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 design effectively suppresses liquid accumulation, reduces corrosion risk, and promotes efficient liquid discharge and ventilation, ensuring the metal tubular members remain protected.
Implementation Method 1
a height of the inner circumferential surface in a vertical direction continuously decreasing from the first end to the second end in a state in which the wire harness is installed in the vehicle
Data Source
AI summary
A wire harness that includes an electric wire and a first tube in which the electric wire is housed a clamp that holds the first tube. The clamp includes a main body in which the first tube is housed, and a protrusion that protrudes from the main body in a longitudinal direction of the first tube. The first tube is fastened to the protrusion with a fastener, and the protrusion has an inner circumferential surface opposed to the first tube, a first end located on one side of the inner circumferential surface in a circumferential direction, and a second end located on the other side of the inner circumferential surface in the circumferential direction. A height of the inner circumferential surface in a vertical direction continuously decreases from the first end to the second end in a state in which the wire harness is installed in the vehicle.