Vehicle Hole Plug Shielding Wall for Water Entry Prevention
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Solution Overview
Problem
Existing hole plugs for vehicles allow water to enter the vehicle interior due to inadequate drainage design, leading to spattering during vibrations and increased risk of water entry during car washing or heavy rainfall, while attempts to enhance drainage worsen appearance and increase weight.
Innovation Solution
A hole plug with a flange having a dish shape and a cylindrical portion featuring a shielding wall larger than the drain hole, a communication path between the cylindrical portion and drain hole, and engagement legs for secure attachment, which repels water effectively without increasing projection, ensuring efficient drainage and appearance improvement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the projection amount of the cover portion is increased to lengthen the drainage canal, then water entry prevention is improved, but appearance deteriorates and weight increases
Solution Approach 1:
The invention introduces a shielding wall that extends in the radial direction (horizontal dimension) rather than only increasing the axial projection length. This dimensional shift allows the drainage canal to be effectively lengthened for water entry prevention without increasing the overall projection amount, thus maintaining appearance quality and reducing weight.
Solution Approach 2:
The drainage path is segmented into multiple sections: the original drainage canal and the newly added shielding wall section. This segmentation allows the water drainage function to be distributed across different spatial locations, achieving effective water entry prevention through the shielding wall while keeping the projection amount controlled.
2Reliability
If the projection amount of the cover portion is increased to lengthen the drainage canal, then water entry prevention is improved, but weight increases
Solution Approach 1:
The invention achieves extended drainage functionality by adding the shielding wall in the radial direction rather than increasing axial projection. This dimensional change prevents water entry effectively while avoiding the weight penalty associated with increased projection amount.
Solution Approach 2:
The invention changes the geometric parameters of the hole plug by adding the shielding wall with specific dimensions (radial extension, thickness) rather than simply increasing the overall size. This parameter optimization achieves water entry prevention without proportional weight increase.
3Productivity
If the communication path is positioned near the joint portion, then drainage performance is improved, but water entry into the vehicle interior occurs during vibrations
Solution Approach 1:
The shielding wall acts as an intermediary structure between the communication path and the external environment. It mediates the interaction by allowing drainage water to pass through while blocking external water from entering through the communication path, thus resolving the contradiction between drainage performance and water entry prevention.
Solution Approach 2:
The shielding wall provides preliminary protection by creating a barrier that prevents external water from reaching the communication path and cavity portion, countering the potential harmful effect of water entry during vibrations before it can occur.
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
The solution effectively prevents water entry into the vehicle while maintaining excellent drainage performance, reducing the need for increased projection and enhancing weight reduction, thus improving both functionality and aesthetics.
Implementation Method 1
the shielding wall 24 positioned directly above the drain hole 14, larger than a horizontal cross-sectional surface of the drain hole 14... the water entering into the drain hole 14 from the outside, the water hits the shielding wall 24... and is repelled
Implementation Method 2
an elastically displaceable engagement claw 2 provided on an outer peripheral portion... the cylindrical portion 2 includes an engagement leg provided in a circumference to detachably engage the attachment hole
Data Source
AI summary
A hole plug for waste water includes a protruding portion having a flange with a dish shape, and a drain hole therein; and a cylindrical portion projecting from the protruding portion and formed at an inner face side of the flange, the cylindrical portion being configured to be inserted into and pass through an attachment hole of a panel. The cylindrical portion includes an engagement leg provided in a circumference configured to detachably engage the attachment hole, a cylinder inside, and a shielding wall which is positioned above the drain hole, is larger than a horizontal cross-sectional surface of the drain hole, and is provided such that the cylinder inside and the drain hole can communicate with each other for allowing a liquid entering into an inside of a vehicle to flow into the cylinder inside and flow out to an outside of a vehicle from the drain hole.