Vehicle Door Gasket String With Concealed Ventilation Openings
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Solution Overview
Problem
The existing methods for producing sealing strips with ventilation openings, such as mechanical processing or laser drilling, are labor-intensive and prone to contamination or impairment of the sealing strand's appearance, especially when producing long sealing profiles.
Innovation Solution
The use of a first elastomer material for the circumferential section of the sealing tube allows for the production of openings through material displacement or removal, preventing particle collection and enabling less precise opening formation, which are then concealed by the installation position and edge protection, facilitating production and appearance preservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical processing or laser drilling is used to produce openings in the sealing hose, then ventilation and drainage functions are achieved, but production effort increases and particles may collect in the hollow chamber
Solution Approach 1:
The sealing hose is designed with a foam rubber material that inherently contains porous structure, providing ventilation and drainage functions without requiring additional mechanical processing or drilling of openings. The porous nature of the foam material allows condensate to pass through while maintaining structural integrity and reducing production complexity.
2Object-generated harmful factors
If laser drilling is used to produce openings, then particle collection in the hollow chamber is prevented, but residues contaminate the profile surface
Solution Approach 1:
The foam rubber sealing hose provides inherent porosity that prevents particle accumulation while avoiding the surface contamination issues associated with laser drilling. The uniform porous structure allows controlled passage of condensate without generating harmful residues on the profile surface.
3Manufacturing precision
If openings are produced with high precision during continuous production, then appearance is preserved, but production complexity and effort increase significantly
Solution Approach 1:
The foam rubber material's inherent porous structure eliminates the need for precision opening production during continuous manufacturing. The uniform porosity is achieved through material formulation and processing rather than post-production opening creation, significantly reducing production complexity while maintaining appearance quality.
4Reliability
If the sealing strip is made from softer elastomer material for better sealing, then sealing performance improves, but opening production becomes more difficult and particles may collect
Solution Approach 1:
The foam rubber elastomer material combines softness for improved sealing performance with inherent porosity that facilitates easy opening production and prevents particle collection. The cellular structure of the foam material allows condensate drainage while maintaining the soft, compliant properties needed for effective sealing against the door.
Data Source
Figure 1~2
Figure 3~5
Figure 6
AI summary
The invention relates to a gasket string, in particular for sealing a door jamb against a vehicle door, having a fixing portion (2), preferably comprising a first elastomeric material, which together with a further portion (6), which optionally comprises a second elastomeric material softer than the first elastomeric material, forms a tubular seal (7), the tube wall of which has openings (16) arranged at intervals in the longitudinal direction of the string. According to the invention, the openings are arranged such that in the installed position said openings are concealed by a circumferentially formed angled portion (19) of the tube wall of the gasket string (7).