Corrugated Sealing Grommet With Snap-In Retaining Ring
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Solution Overview
Problem
Existing sealing grommet arrangements have complex designs and require significant effort for installation, limiting their versatility and applicability to different housing wall openings and protrusion lengths.
Innovation Solution
A retaining ring with a central through-opening is designed to elastically deform and move along a corrugated sealing grommet, allowing it to be easily adjusted to different lengths and diameters without additional components or tools, and is secured to the housing wall by snapping into an annular groove.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a retaining ring with locking lug is used to secure the sealing grommet, then the sealing grommet is held firmly in position, but the assembly becomes complex and requires considerable effort for installation
Solution Approach 1:
The locking lug is removed from the retaining ring design. Instead of using a complex locking mechanism, the retaining ring simply engages with the corrugation trough through elastic deformation, eliminating unnecessary components and simplifying the assembly process while maintaining secure holding.
Solution Approach 2:
The retaining ring is designed to change its diameter parameter dynamically. By applying axial force, the ring elastically deforms to a smaller diameter to pass through the corrugation trough, then returns to its original diameter to secure the sealing grommet, enabling simple installation without complex mechanisms.
2Adaptability or versatility
If multiple sealing grommets with different lengths and diameters are used to accommodate different applications, then various housing wall openings can be sealed, but storage and logistics costs increase
Solution Approach 1:
The sealing grommet is designed as a universal component that can be used for different applications by adjusting the retaining ring position along its length. The corrugated structure with multiple troughs allows the same grommet to accommodate various protrusion lengths, and the retainable ring can be positioned at different locations to fit different housing wall opening diameters, eliminating the need for multiple specialized grommets.
3Adaptability or versatility
If the retaining ring is designed to be movable along the sealing grommet, then the same grommet can be used for different lengths, but additional force is required to move the ring
Solution Approach 1:
The retaining ring utilizes elastic deformation to change its diameter parameter. By applying axial force, the ring temporarily reduces its diameter to pass through the corrugation trough, then elastically returns to its original diameter, creating a secure fit. This elastic parameter change enables easy movement and positioning without requiring excessive 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
Facilitates simple assembly and reduces storage and logistics costs by enabling the same grommet to be used for various applications, ensuring a secure fit and enhanced sealing with a preloaded sealing lip.
Implementation Method 1
the sealing grommet consists of an elastically deformable material such that the retaining ring can be moved from one trough to an adjacent trough in an elastically deforming manner by applying a certain axial minimum force
Implementation Method 2
If the sealing lip is designed to be elastic and its radially inner region is connected to the groove wall of the annular groove further away from the housing wall and its freely projecting radially outer region is inclined towards the housing wall, the retaining ring, when attached to the housing wall, rests against the housing wall with preload, increasing the sealing effect.
Data Source
AI summary
The invention relates to a sealing grommet arrangement comprising a sealing grommet (1) which is designed as a corrugated tube having a constant outer diameter over its length, one end of which grommet projects through an opening (12) in a housing wall (10), and on which grommet a retaining ring (6) for retaining the sealing grommet (1) on the housing wall (10) is positioned. The retaining ring projects, by means of the inner contour of its through-opening (7), radially inwards into a corrugation trough (2) of the sealing grommet (1), and can be connected to the housing wall (10) so as to close the opening (12) in the housing wall (10). The retaining ring (6) has a central through-opening (7), by means of the inner contour (8) of which the retaining ring (6) projects into a corrugation trough (2) of the sealing grommet (1), wherein the sealing grommet (1) consists of a material which is elastically deformable in such a way that the retaining ring (6) can be moved, by a certain minimum application of axial force, from one corrugation trough (2) into an adjacent corrugation trough (2) so as to elastically deform the sealing grommet (1).