Automobile Weather Strip Segmented Sealing Design
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Solution Overview
Problem
Conventional weather strips for automobile doors, when divided for assembly, suffer from reduced stability and compromised sealing properties due to the narrow attachment space, leading to potential rainwater and dust intrusion.
Innovation Solution
A weather strip design featuring a seal member with an attaching base part, window glass seal lip, support member, door seal lip, and engaging part, which securely attaches to a division member to guide the window glass and improve sealing by transmitting pressing forces, while also incorporating a groove and turning restriction member to enhance stability and sealing efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the weather strip is divided into multiple pieces for assembly, then the assembling workability is improved, but the stability of holding parts is lowered and sealing properties are deteriorated
Solution Approach 1:
The weather strip is divided into multiple pieces (first weather strip and second weather strip) that can be assembled separately, improving manufacturing ease and assembly workability while maintaining overall sealing function
Solution Approach 2:
The holding part integrates multiple functions by combining the holding protrusion and holding groove structures with the sealing lip and support member, ensuring that even when divided, the assembled pieces maintain stable holding and sealing properties through complementary interfaces
2Ease of manufacture
If the weather strip is divided into multiple pieces, then the assembling workability is improved, but the stability of holding parts is lowered
Solution Approach 1:
The weather strip is segmented into multiple assembleable pieces with dedicated holding parts (protrusions and grooves) that provide stable connection interfaces, allowing easy assembly while maintaining structural stability
Solution Approach 2:
The holding protrusion fits into the holding groove in a nested manner, creating a stable interlocking connection that maintains the stability of holding parts even when the weather strip is divided into separate pieces
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 design ensures excellent sealing properties even when the weather strip is divided, allowing smooth window operation and preventing water and dust intrusion by stabilizing the seal member attachment and maintaining sealing integrity.
Implementation Method 1
the support member contacts the attaching base part or the window glass seal lip to press the attaching base part
Data Source
AI summary
A weather strip exhibiting excellent sealing properties is adapted to be attached after being divided into pieces. The weather strip has a seal member. The seal member includes an attaching base part, a window glass seal lip, a support member, a door seal lip extending from an attaching reference surface of the attaching base part, and an attaching engaging part for engagement with a division member such that when the window glass seal lip of the seal member contacts the interior surface of the window glass, the support member contacts the attaching base part to press the attaching base part.