Vehicle Window Frame Molding Circuitous Drainage
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Solution Overview
Problem
Vehicles with sliding glass panels at the rear of pickup trucks face issues with water entering the cab interior, leading to noise and moisture problems, as existing solutions fail to effectively drain water without generating objectionable road or wind noise.
Innovation Solution
A vehicle window assembly with a window frame molding featuring an integrated fluid inlet, circuitous flow channel, and outlet, where the flow channel doubles back to connect the inlet with the outlet, allowing water to drain from the interior compartment to the outside while minimizing noise through a structured design with a stationary glass member and structural support, and optional additional inlets and channels for enhanced drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If water is drained directly from the interior compartment to the outside through a straight channel, then drainage efficiency is improved, but road noise and wind noise enter the interior compartment
Solution Approach 1:
The flow channel is designed as a circuitous path with bends and curves rather than a straight line. The channel includes a first leg extending from the inlet, a bend connecting to a second leg, and additional bends connecting to the outlet. This curved geometry extends the flow path length to at least 100 millimeters, which attenuates noise while maintaining drainage functionality.
Solution Approach 2:
The flow channel extends in multiple spatial dimensions rather than a direct linear path. The channel includes vertical and horizontal segments, with the inlet positioned at a first vertical level and the outlet at a second vertical level. This multi-dimensional routing increases path length and creates noise attenuation through the extended flow journey.
2Object-affected harmful factors
If the flow channel length is increased to minimize noise, then noise minimization is improved, but the molding complexity increases
Solution Approach 1:
The flow channel is integrated directly into the molding structure itself, combining the drainage function with the window frame molding. The inlet, circuitous flow channel with bends and legs, and outlet are all formed as part of the single molding component, eliminating the need for separate drainage assemblies or additional parts.
Solution Approach 2:
The molding serves multiple functions: it provides the window frame structure, integrates the drainage system with the circuitous flow channel, and acts as a noise barrier. The single component performs structural support, fluid drainage, and acoustic isolation functions simultaneously.
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 expels water from the interior compartment to the outside, reducing noise and maintaining a quiet cabin environment by utilizing a circuitous flow channel design that ensures efficient drainage without generating undesirable wind or road noise, with a demonstrated length of at least 100 millimeters for substantial noise minimization.
Implementation Method 1
the flow channel winds between and connects the inlet with the outlet to permit fluid flow from the interior compartment to the outside of the cab through the molding
Data Source
AI summary
A vehicle window assembly, preferably for the rear of a pickup cab having a sliding glass member, is provided with a window frame molding having an integrated fluid inlet, fluid outlet and circuitous flow channel that doubles back on itself and connects the fluid inlet with the fluid outlet to permit fluid flow through the molding, thereby permitting water that has entered through the sliding glass member to drain from interior compartment to the outside of the vehicle while minimizing the introduction of road and wind noise in the interior compartment.