Spring Sealing Lip Grommet for Compact Load-Absorbing Sealing
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Solution Overview
Problem
Existing grommets face challenges in achieving high sealing efficiency against media and sound while withstanding mechanical loads, all while occupying minimal installation space.
Innovation Solution
A grommet with a spring sealing lip that is compressible during assembly and under mechanical loads, allowing for axial deformation without expanding radially, thus maintaining sealing efficiency in a compact form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sealing lip is designed to be compressible during assembly, then sealing efficiency is improved, but the grommet requires more installation space in the axial direction
Solution Approach 1:
The sealing lip is designed with a spring section that allows it to dynamically change its shape and compression during assembly and operation. The spring section enables the sealing lip to be compressed axially during assembly to ensure tight sealing, while automatically recovering its shape when the assembly force is removed, thus achieving effective sealing without requiring permanent additional installation space.
Solution Approach 2:
The spring section of the sealing lip changes its physical state between compressed and relaxed conditions. During assembly, the spring section is compressed to provide strong sealing force; after assembly, it returns to its original state, maintaining sealing effectiveness while minimizing the axial space occupied by the grommet.
2Strength
If the sealing lip is made rigid to withstand mechanical loads, then mechanical strength is improved, but sealing flexibility and adaptability deteriorate
Solution Approach 1:
The sealing lip is designed with different local properties: the spring section provides flexibility and adaptability for sealing, while the overall structure maintains sufficient mechanical strength. The spring section can deform to adapt to mounting surface irregularities and absorb mechanical loads, ensuring both sealing flexibility and mechanical durability.
Solution Approach 2:
The spring section allows the sealing lip to dynamically adapt to mechanical loads by deforming under stress and recovering when the load is removed. This dynamic behavior enables the sealing lip to maintain both flexibility for effective sealing and strength to withstand mechanical loads during assembly and operation.
3Length of moving object
If the grommet is designed for compact installation space, then installation space requirement is reduced, but the ability to absorb mechanical loads deteriorates
Solution Approach 1:
The spring section of the sealing lip acts as a mechanical element that can absorb and dissipate mechanical loads through elastic deformation. Despite the compact overall dimensions of the grommet, the spring section provides sufficient load absorption capability by deforming under stress and returning to its original shape, thus protecting the grommet from damage while maintaining compact installation space.
Solution Approach 2:
The spring section changes its physical parameters (shape, compression) in response to mechanical loads, allowing the compact grommet to absorb and accommodate force variations. This parameter change mechanism enables the grommet to withstand mechanical loads effectively within a compact design.
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 grommet achieves effective sealing against media and sound while absorbing mechanical loads without expanding radially, thus requiring minimal installation space and maintaining optimal sealing performance.
Implementation Method 1
the spring section is configured such that the sealing lip is compressible, in particular during assembly, i.e. mounting, of the grommet in or on the wall
Implementation Method 2
the sealing lip is also referred to as a 'spring sealing lip'. Because of the spring section, the sealing lip is not designed as a simple ramp
Data Source
AI summary
A grommet with a sealing lip running around a longitudinal axis which extends in an axial direction. The sealing lip has a spring section configured such that the sealing lip is compressible which assists in developing a sealing effect for attaching the grommet to a mounting surface such as a wall.